COSMETIC-FLUID DISPENSER

Abstract

There is provided a cosmetic-fluid dispenser comprising: an elongate main body having a cosmetic-fluid storage space defined therein to contain cosmetic fluid therein, wherein the elongate main body has a chamber body portion; a fluid-communication chamber defined in the chamber body portion in a first direction, wherein the first direction is a direction perpendicular to a longitudinal direction of the elongate main body; an actuation mechanism at least partially hollowed and insertable into the fluid-communication chamber, wherein a top thereof protrudes outside the fluid-communication chamber, and a bottom thereof is received in the fluid-communication chamber, and has a bottom inlet hole defined therein; a first vertical elastic hollow member having a lower end disposed on a bottom face of the fluid communication chamber, wherein at least a portion of an upper portion thereof is inserted into the actuation mechanism through the bottom inlet hole; a first fluid communication channel defined in the chamber body portion in a direction away from the cosmetic-fluid storage space; a second fluid communication channel defined in the chamber body portion to fluid-communicate with the cosmetic-fluid storage space; and a cosmetic-fluid outlet structure configured to communicate with the first fluid communication channel, wherein the cosmetic-fluid outlet structure has a fluid discharging hole defined in a distal end thereof and exposed to an outside of the dispenser, wherein a top of the chamber body portion has a first round concaved top portion having an opening defined therein through which the actuation mechanism passes into the chamber, wherein an outer face of the top of the actuation mechanism has a shape conformal to a round concaved shape of the round concaved top portion.

Description

INCORPORATION BY REFERENCE

[0001] This application is based upon and claims the benefit of priority from the corresponding Korean Patent Application No. 10-2017-0116595 filed on Sep. 12, 2017, the entire contents of which are incorporated herein by reference.

BACKGROUND

Field of the Present Disclosure

[0002] Embodiments of the present disclosure relate to a cosmetic-fluid dispenser, and more particularly, to a cosmetic-fluid dispenser that is capable of smoothly dispensing a constant amount of cosmetic-fluid.

Discussion of the Related Art

[0003] Generally, a cosmetic container has a container body storing therein a cosmetic liquid and has a threaded bottleneck coupled to the body. Then, a threaded cap as a handle is coupled to the threaded bottleneck. A brush is coupled via a long rod to an inner central lower end of the cap/handle such that the brush is immersed in the liquid in the container body.

[0004] In use of the general cosmetic container constructed as described above, the cap is turned to open the bottleneck, and then the cap is removed from the neck. Then, the user contacts the cosmetic liquid-wetted brush with her skin.

[0005] However, as for such a conventional cosmetic container (for example, Korean Patent No. 10-1318673), the user needs to repeatedly immerse the brush into the liquid in the body in order to repeatedly applying the cosmetic liquid to the target skin. In this connection, since the brush has to be repeatedly put into and drawn out of the container body, external air may be flowed into the container body and, thus, the cosmetic liquid is easily hardened.

[0006] Further, since the cosmetic liquid contains an alcohol component, and, thus, the cosmetic liquid has a strong volatility, the liquid may be easily volatilized unless the cap is surely sealed. Therefore, as for the conventional cosmetic container, the cap cannot maintain a reliable sealing force, and, thus, the cosmetic liquid in the cosmetic container may be volatilized. Thus, the cosmetic liquid hardens or deteriorates.

SUMMARY

[0007] This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify all key features or essential features of the claimed subject matter, nor is it intended to be used alone as an aid in determining the scope of the claimed subject matter.

[0008] The present disclosure is provide a cosmetic-fluid dispenser that is capable of smoothly dispensing a constant amount of cosmetic-fluid.

[0009] Further, the present disclosure is provide a cosmetic-fluid dispenser which is always sealed to prevent deterioration and hardening of the cosmetic liquid.

[0010] Further, the present disclosure is provide a cosmetic-fluid dispenser which is easy to carry and which suppresses leakage of cosmetic liquid by unintended external force.

[0011] Another object of the present disclosure is to provide a cosmetic-fluid dispenser having a narrow diameter and having no portion protruding outwards in the width direction thereof, thereby providing a slimmer and smaller-sized cosmetic-fluid dispenser while providing an excellent aesthetics.

[0012] It is a further object of the present disclosure to provide to provide a cosmetic-fluid dispenser wherein the elastic member controlling the movement of the actuation mechanism does not contact the cosmetic liquid and unnecessary members may be omitted in the movement channel of the cosmetic liquid such that the characteristics of the cosmetic liquid may be maintained in a non-polluted state for a long period of time.

[0013] Other objects of the present disclosure will be apparent to those skilled in the art from the following embodiments.

[0014] In a first aspect of the present disclosure, there is provided a cosmetic-fluid dispenser comprising: an actuation mechanism configured to enable selective dispensing of a cosmetic-fluid; a elongate main body having a main inner space defined therein and opposite first and second end portions, wherein the main body has a first opening defined in a side portion thereof, wherein the main inner space contains therein a cosmetic-fluid, wherein the actuation mechanism passes through the first opening to enable the selective dispensing of a cosmetic-fluid; a fluid-communication chamber disposed in the first end portion of the elongate main body, wherein the fluid-communication chamber fluid-communicates with the elongate main body, wherein the fluid-communication chamber is configured to cooperate with the actuation mechanism to dispense a cosmetic-fluid out of the elongate main body; a distal cosmetic-fluid outlet structure fluid-communicating with the fluid-communication chamber, wherein the distal cosmetic-fluid outlet structure is disposed out of the main body; and a cap removably coupled to the elongate main body at the first end portion, wherein the fluid-communication chamber includes a chamber body having a cylindrical inner space defined therein, and a cosmetic-fluid outlet guide in fluid-communication with the chamber body, wherein a cosmetic-fluid outlet guide is in fluid-communication with the distal cosmetic-fluid outlet structure, wherein the chamber body has a fluid-inlet hole formed therein, a fluid-outlet hole fluid-communicating with a cosmetic-fluid outlet guide, and a second opening position-corresponding to the first opening, wherein a cosmetic fluid stored in the main body flows into the cylindrical chamber through the fluid-inlet hole.

[0015] In one implementation of the first aspect, the actuation mechanism is configured: upon application of an external force thereto, to move in a first direction to be at least partially inserted to the cylindrical space in the chamber body, thereby to discharge a first volume of cosmetic fluid contained in the cylindrical space in the chamber body through the fluid-outlet hole into the cosmetic fluid outlet; upon release of the applied external force, to move in a second direction opposite to the first direction, thereby to enable a cosmetic fluid of the same volume as the first volume to flow from the main body into the chamber body through the fluid-inlet hole.

[0016] In one implementation of the first aspect, the actuation mechanism includes: a pushed portion protruding out of the elongate main body to receive the external force; an insertable cylinder connected to the pushed portion and passing through the first and second openings; and a first elastic member loaded on the insertable cylinder and disposed within the cylindrical space in the chamber body, wherein the first elastic member is elastically deformed via the insertable cylinder when the external force is applied to the pushed portion, wherein the first elastic member is restored by an elastic restoring force when the external force is released.

[0017] In one implementation of the first aspect, when the external force is applied to the pushed portion, the insertable cylinder is moved from a first position to a second position; when the external force applied to the pushed portion is released, the insertable cylinder is moved from the second position to the first position by the first elastic member, wherein when the insertable cylinder is at the second position, the fluid-inlet hole is closed to disallow flow of a cosmetic-fluid through the fluid-inlet hole; when the insertable cylinder is at the first position, the fluid-inlet hole is opened to allow flow of a cosmetic-fluid through the fluid-inlet hole.

[0018] In one implementation of the first aspect, the cap further comprises a fastening rib projecting from a distal end of the cap toward the actuation mechanism, wherein the actuation mechanism further comprises a step portion formed between the pushed portion and the insertable cylinder, the step portion having a diameter smaller than a diameter of the pushed portion, wherein the fastening rib extends toward the step portion, wherein a distal end of the fastening rib is rounded to shape-correspond to an outer circumference of the step portion, wherein the fastening rib protrudes toward an outer side face of the step portion so as to support a bottom of the pushed portion thereon to prevent movement of the pushed portion.

[0019] In one implementation of the first aspect, the actuation mechanism includes an proximal sealing ring coupled to the insertable cylinder, wherein the proximal sealing ring is configured to prevent escape of a cosmetic fluid out of the cylindrical space of the chamber body when the insertable cylinder moves from the first direction to the second direction or from the second direction to the first direction.

[0020] In one implementation of the first aspect, the proximal sealing ring is configured to prevent air flow in and out of the cylindrical space of the chamber body through the first opening, wherein the proximal sealing ring is engaged with a proximal end of an inserted portion of the insertable cylinder, wherein the proximal sealing ring projects further outwardly than an outer diameter of an extension portion between a proximal end and a distal end of an inserted portion of the insertable cylinder.

[0021] In one implementation of the first aspect, the extension portion has a diameter substantially equal to a diameter of the cylindrical space defined in the chamber body, and each of the proximal end and the distal end of an inserted portion has a diameter smaller than the diameter of the extension portion, wherein in the movement of the cylinder, the proximal sealing ring is compressed by a cylindrical inner wall of the chamber body to have a diameter substantially equal to a diameter of the cylindrical space of the chamber body.

[0022] In one implementation of the first aspect, the actuation mechanism further includes a distal sealing ring coupled to the insertable cylinder, wherein the distal sealing ring slides along and on the cylindrical inner wall of the chamber body when the insertable cylinder moves from the first direction to the second direction or from the second direction to the first direction.

[0023] In one implementation of the first aspect, the distal sealing ring is engaged with the distal end of the inserted portion of the insertable cylinder, wherein the distal sealing ring further projects outwardly beyond the diameter of the extension portion between the proximal and distal ends of the inserted portion of the insertable cylinder, wherein, in the movement of the cylinder, the distal sealing ring is compressed by the inner wall of the chamber body to have a diameter substantially the same as the diameter of the cylindrical space of the chamber body.

[0024] In one implementation of the first aspect, the dispenser further comprises a compressing member disposed in the main inner space of the elongate main body, wherein the compressing member is configured to divide the main inner space into a first inner sub-space and a second inner sub-space, wherein a cosmetic-fluid is stored in the first inner sub-space defined between the compressing member and the fluid-communication chamber.

[0025] In one implementation of the first aspect, when the external force applied to the actuation mechanism is released such that a cosmetic fluid of the first volume from the cosmetic fluid stored in the first inner sub-space passes through the fluid-inlet hole into the cylindrical space, the compressing member is displaced in a sliding manner along and on an inner face of the elongate main body such that a volume of the first inner sub-space is reduced by the first volume.

[0026] In one implementation of the first aspect, the dispenser further comprises a sealing cap passing through and sealing the second end of the elongate main body, wherein the second inner sub-space is defined between the compressing member and the sealing cap, wherein when a volume of the first inner sub-space is reduced by the first volume, a volume of the second inner sub-space is expanded by the first volume.

[0027] In one implementation of the first aspect, the distal cosmetic-fluid outlet structure includes: an outlet hole formed in a downstream region thereof for discharging a cosmetic-fluid; and an inserted portion formed in an upstream region thereof and inserted into a distal end of the cosmetic-fluid outlet guide.

[0028] In one implementation of the first aspect, when the inserted portion is inserted into the distal end of the cosmetic-fluid outlet guide, a spacing is defined between an outer peripheral surface of the inserted portion and an inner peripheral surface of the cosmetic-fluid outlet guide.

[0029] In one implementation of the first aspect, the inserted portion has a first inserted sub-portion, a second inserted sub-portion, and a hole-opening/closing member, wherein the first inserted sub-portion defines therein a first fluid-communication channel in fluid-communication with the outlet hole, wherein the first inserted sub-portion has a first fluid-communication hole defined therein to allow fluid-communication between the first fluid-communication channel and the spacing, wherein the second inserted sub-portion defines therein a second fluid-communication channel in fluid-communication with the fluid-outlet hole, wherein the second inserted sub-portion has a second fluid-communication hole defined therein to allow fluid-communication between the second fluid-communication channel and the spacing, wherein the hole-opening/closing member is constructed to surround the second fluid-communication hole and to control flow of a cosmetic-fluid through the second fluid-communication hole.

[0030] In one implementation of the first aspect, when an external force is applied to the actuation mechanism, the hole-opening/closing member is elastically deformed via a pressure generated by a cosmetic-fluid moving toward the distal end of a cosmetic-fluid outlet guide through the fluid-outlet hole, thereby to open the second fluid-communication hole, wherein when the external force applied to the actuation mechanism is released such that the pressure is weakened, the hole-opening/closing member is restored by an elastic restoring force, thereby to close the second fluid-communication hole.

[0031] In one implementation of the first aspect, a removable cosmetic-fluid storage unit is removably received in the main inner space of the main body.

[0032] In one implementation of the first aspect, the removable cosmetic-fluid storage unit includes: a removable elongate body having an elongate inner space therein, wherein the removable elongate body is removably inserted into the inner space of the elongate main body; a compressing member disposed in the elongate inner space to divide the elongate inner space of the removable elongate body into a first inner sub-space and a second inner sub-space; and a sealing cap configured to seal the inner space of the removable elongate body and the second end of the elongate main body, wherein a cosmetic-fluid is stored in the first inner sub-space defined between the compressing member and the chamber body of the fluid-communication chamber, wherein when the external force applied to the actuation mechanism is released so that a cosmetic-fluid of the first-volume from a cosmetic-fluid stored in the first inner sub-space passes through the fluid-inlet hole into the cylindrical space of the chamber body, the compressing member is displaced in a sliding manner along and on an inner face of the removable elongate body so that a volume of the first inner sub-space is reduced by the first volume.

[0033] In second aspect of the present disclosure, there is provided a cosmetic-fluid dispenser comprising: an actuation mechanism configured to enable selective dispensing of a cosmetic-fluid; a elongate main body having a main inner space defined therein and opposite first and second end portions, wherein the main body has a first opening defined in a side portion thereof, wherein the main inner space contains therein a cosmetic-fluid, wherein the actuation mechanism passes through the first opening to enable the selective dispensing of a cosmetic-fluid; a fluid-communication chamber disposed in the first end portion of the elongate main body, wherein the fluid-communication chamber fluid-communicates with the elongate main body, wherein the fluid-communication chamber is configured to cooperate with the actuation mechanism to dispense a cosmetic-fluid out of the elongate main body; a distal cosmetic-fluid outlet structure fluid-communicating with the fluid-communication chamber, wherein the distal cosmetic-fluid outlet structure is disposed out of the main body; and a cap removably coupled to the elongate main body at the first end portion, wherein the fluid-communication chamber includes a chamber body having a cylindrical inner space defined therein, and a cosmetic-fluid outlet guide in fluid-communication with the chamber body, wherein a cosmetic-fluid outlet guide is in fluid-communication with the distal cosmetic-fluid outlet structure, wherein the chamber body has a fluid-inlet hole formed therein, a fluid-outlet hole fluid-communicating with a cosmetic-fluid outlet guide, and a second opening position-corresponding to the first opening, wherein a cosmetic fluid stored in the main body flows into the cylindrical chamber through the fluid-inlet hole, wherein the fluid-communication chamber further includes: a hollow cosmetic-fluid inlet guide having a proximal portion in fluid-communication with the fluid-inlet hole and a distal portion protruding into the main inner space of the main body; a hole-opening/closing member elastic support received in a cosmetic-fluid inlet guide and configured to support a hole-opening/closing member; the hole-opening/closing member disposed at a distal end of the hole-opening/closing member elastic support; and a hollow elongate cover surrounding the distal portion of a cosmetic-fluid inlet guide, wherein the hollow elongate cover has first and second holes defined in proximal and distal ends thereof respectively, wherein a portion of the cover contacting the hole-opening/closing member has a truncated cone shape.

[0034] In one implementation of the second aspect, the actuation mechanism is configured: upon application of an external force thereto, to move in a first direction to be at least partially inserted to the cylindrical space in the chamber body, thereby to discharge a first volume of cosmetic fluid contained in the cylindrical space in the chamber body through the fluid-outlet hole into the cosmetic fluid outlet; upon release of the applied external force, to move in a second direction opposite to the first direction, thereby to enable a cosmetic fluid of the same volume as the first volume to flow from the main body into the chamber body through the fluid-inlet hole.

[0035] In one implementation of the second aspect, the actuation mechanism includes: a pushed portion protruding out of the elongate main body to receive the external force; an insertable cylinder connected to the pushed portion and passing through the first and second openings; and a first elastic member loaded on the insertable cylinder and disposed within the cylindrical space in the chamber body, wherein the first elastic member is elastically deformed via the insertable cylinder when the external force is applied to the pushed portion, wherein the first elastic member is restored by an elastic restoring force when the external force is released.

[0036] In one implementation of the second aspect, when the external force is applied to the pushed portion, the insertable cylinder is moved from a first position to a second position; when the external force applied to the pushed portion is released, the insertable cylinder is moved from the second position to the first position by the first elastic member, wherein when the insertable cylinder is at the second position, the second hole is closed via the hole-opening/closing member being pressured by the hole-opening/closing member elastic support, thereby to disallow flow of a cosmetic-fluid through the fluid-inlet hole, wherein when the insertable cylinder is at the first position, the second hole is opened to allow flow of a cosmetic-fluid through the fluid-inlet hole.

[0037] In one implementation of the second aspect, the cap further comprises a fastening rib projecting from a distal end of the cap toward the actuation mechanism, wherein the actuation mechanism further comprises a step portion formed between the pushed portion and the insertable cylinder, the step portion having a diameter smaller than a diameter of the pushed portion, wherein the fastening rib extends toward the step portion, wherein a distal end of the fastening rib is rounded to shape-correspond to an outer circumference of the step portion, wherein the fastening rib protrudes toward an outer side face of the step portion so as to support a bottom of the pushed portion thereon to prevent movement of the pushed portion.

[0038] In one implementation of the second aspect, a proximal end of the cosmetic-fluid inlet guide has a diameter larger than a diameter of the fluid-inlet hole so as to surround the fluid-inlet hole, wherein a diameter of the first hole of the hollow elongate cover is greater than a diameter of the second hole thereof, wherein a distal end of the hollow elongate cover has a truncated cone shape.

[0039] In one implementation of the second aspect, the hole-opening/closing member elastic support includes a spring received in the cosmetic-fluid inlet guide, wherein the hole-opening/closing member is disposed at the distal end of the hole-opening/closing member elastic support and has a spherical shape, wherein the hole-opening/closing member is configured to reversibly open and close the second hole of the hollow elongate cover via a force exerted by the hole-opening/closing member elastic support.

[0040] In one implementation of the second aspect, a first fastening structure is formed on and along an outer circumference of the cosmetic-fluid inlet guide, and a second fastening structure is formed on and along an inner circumference of the hollow elongate cover, wherein via engagement between the first fastening structure and the second fastening structure, the hollow elongate cover is tightly coupled to the cosmetic-fluid inlet guide, wherein the cosmetic-fluid inlet guide is inserted into the hollow elongate cover such that the fluid-inlet hole and the second hole of the hollow elongate cover are arranged so as to fluid-communicate with each other.

[0041] In one implementation of the second aspect, the actuation mechanism includes an proximal sealing ring coupled to the insertable cylinder, wherein the proximal sealing ring is configured to prevent escape of a cosmetic fluid out of the cylindrical space of the chamber body when the insertable cylinder moves from the first direction to the second direction or from the second direction to the first direction.

[0042] In one implementation of the second aspect, the proximal sealing ring is configured to prevent air flow in and out of the cylindrical space of the chamber body through the first opening, wherein the proximal sealing ring is engaged with a proximal end of an inserted portion of the insertable cylinder, wherein the proximal sealing ring projects further outwardly than an outer diameter of an extension portion between a proximal end and a distal end of an inserted portion of the insertable cylinder.

[0043] In one implementation of the second aspect, the extension portion has a diameter substantially equal to a diameter of the cylindrical space defined in the chamber body, and each of the proximal end and the distal end of an inserted portion has a diameter smaller than the diameter of the extension portion, wherein in the movement of the cylinder, the proximal sealing ring is compressed by a cylindrical inner wall of the chamber body to have a diameter substantially equal to a diameter of the cylindrical space of the chamber body.

[0044] In one implementation of the second aspect, the actuation mechanism further includes a distal sealing ring coupled to the insertable cylinder, wherein the distal sealing ring slides along and on the cylindrical inner wall of the chamber body when the insertable cylinder moves from the first direction to the second direction or from the second direction to the first direction.

[0045] In one implementation of the second aspect, the distal sealing ring is engaged with the distal end of the inserted portion of the insertable cylinder, wherein the distal sealing ring further projects outwardly beyond the diameter of the extension portion between the proximal and distal ends of the inserted portion of the insertable cylinder, wherein, in the movement of the cylinder, the distal sealing ring is compressed by the inner wall of the chamber body to have a diameter substantially the same as the diameter of the cylindrical space of the chamber body.

[0046] In one implementation of the second aspect, the dispenser further comprises a compressing member disposed in the main inner space of the elongate main body, wherein the compressing member is configured to divide the main inner space into a first inner sub-space and a second inner sub-space, wherein a cosmetic-fluid is stored in the first inner sub-space defined between the compressing member and the fluid-communication chamber.

[0047] In one implementation of the second aspect, when the external force applied to the actuation mechanism is released such that a cosmetic fluid of the first volume from the cosmetic fluid stored in the first inner sub-space passes through the hollow fluid inlet guide and the fluid-inlet hole into the cylindrical space, the compressing member is displaced in a sliding manner along and on an inner face of the elongate main body such that a volume of the first inner sub-space is reduced by the first volume.

[0048] In one implementation of the second aspect, the dispenser further comprises a sealing cap passing through and sealing the second end of the elongate main body, wherein the second inner sub-space is defined between the compressing member and the sealing cap, wherein when a volume of the first inner sub-space is reduced by the first volume, a volume of the second inner sub-space is expanded by the first volume.

[0049] In one implementation of the second aspect, the sealing cap has an air-communication hole defined therein, wherein the air-communication hole allows air-communication between the second inner sub-space and an exterior space of the cosmetic-fluid dispenser, wherein the air-communication hole defines a channel through which, when the second inner sub-space is expanded by the first volume, an outside air of the same volume as the first volume flows into the second inner sub-space.

[0050] In one implementation of the second aspect, the distal cosmetic-fluid outlet structure includes: an outlet hole formed in a downstream region thereof for discharging a cosmetic-fluid; and an inserted portion formed in an upstream region thereof and inserted into a distal end of the cosmetic-fluid outlet guide, wherein when the inserted portion is inserted into the distal end of the cosmetic-fluid outlet guide, a spacing is defined between an outer peripheral surface of the inserted portion and an inner peripheral surface of the cosmetic-fluid outlet guide.

[0051] In one implementation of the second aspect, the inserted portion has a first inserted sub-portion, a second inserted sub-portion, and a hole-opening/closing member, wherein the first inserted sub-portion defines therein a first fluid-communication channel in fluid-communication with the outlet hole, wherein the first inserted sub-portion has a first fluid-communication hole defined therein to allow fluid-communication between the first fluid-communication channel and the spacing, wherein the second inserted sub-portion defines therein a second fluid-communication channel in fluid-communication with the fluid-outlet hole, wherein the second inserted sub-portion has a second fluid-communication hole defined therein to allow fluid-communication between the second fluid-communication channel and the spacing, wherein the hole-opening/closing member is constructed to surround the second fluid-communication hole and to control flow of a cosmetic-fluid through the second fluid-communication hole.

[0052] In one implementation of the second aspect, when an external force is applied to the actuation mechanism, the hole-opening/closing member is elastically deformed via a pressure generated by a cosmetic-fluid moving toward the distal end of a cosmetic-fluid outlet guide through the fluid-outlet hole, thereby to open the second fluid-communication hole, wherein when the external force applied to the actuation mechanism is released such that the pressure is weakened, the hole-opening/closing member is restored by an elastic restoring force, thereby to close the second fluid-communication hole.

[0053] In one implementation of the second aspect, a removable cosmetic-fluid storage unit is removably received in the main inner space of the main body.

[0054] In one implementation of the second aspect, the removable cosmetic-fluid storage unit includes: a removable elongate body having an elongate inner space therein, wherein the removable elongate body is removably inserted into the inner space of the elongate main body; a compressing member disposed in the elongate inner space to divide the elongate inner space of the removable elongate body into a first inner sub-space and a second inner sub-space; and a sealing cap configured to seal the inner space of the removable elongate body and the second end of the elongate main body.

[0055] In one implementation of the second aspect, a cosmetic-fluid is stored in the first inner sub-space defined between the compressing member and the chamber body of the fluid-communication chamber, wherein when the external force applied to the actuation mechanism is released so that a cosmetic-fluid of the first-volume from a cosmetic-fluid stored in the first inner sub-space passes through the fluid-inlet hole into the cylindrical space of the chamber body, the compressing member is displaced in a sliding manner along and on an inner face of the removable elongate body so that a volume of the first inner sub-space is reduced by the first volume.

[0056] In one implementation of the second aspect, the distal cosmetic-fluid outlet structure includes: an outlet hole formed in a downstream region thereof for discharging a cosmetic-fluid; and an inserted portion formed in an upstream region thereof and inserted into a distal end of the cosmetic-fluid outlet guide, wherein the outlet hole has an elliptical-shaped cross-section, wherein an inner diameter of an distal end portion of the cosmetic-fluid outlet guide is larger than an inner diameter of a middle extension portion of the cosmetic-fluid outlet guide, wherein the inserted portion of the distal cosmetic-fluid outlet structure is inserted into the distal end portion of the cosmetic-fluid outlet guide.

[0057] In one implementation of the first and/or second aspect, the dispenser further comprises a second elastic member disposed between an outer peripheral surface of the inserted portion of the distal cosmetic-fluid outlet structure, and an inner peripheral surface of the distal end portion of the cosmetic-fluid outlet guide; and an outlet-control ball disposed at a proximal end of the second elastic member, wherein the outlet-control ball has a larger diameter than a diameter of the middle extension portion of the cosmetic-fluid outlet guide.

[0058] In one implementation of the first and/or second aspect, when an external force is applied to the actuation mechanism, the outlet-control ball is subjected to a pressure generated by the cosmetic-fluid moving toward the distal end of the cosmetic-fluid outlet guide through the fluid-outlet hole, and, thus, is moved in a third direction, wherein the third direction is perpendicular to the first direction or second direction, wherein the third direction is a direction going away from the cylindrical space, wherein when the pressure generated by the cosmetic-fluid is weakened, the outlet-control ball is moved by the second elastic member in a fourth direction opposite to the third direction, thereby to close a further inlet hole defined in a boundary region between the distal end portion and the middle extension portion of the cosmetic-fluid outlet guide.

[0059] In a third aspect of the present disclosure, there is provided a cosmetic-fluid dispenser comprising: an elongate main body having a cosmetic-fluid storage space defined therein to contain cosmetic fluid therein, wherein the elongate main body has a chamber body portion; a fluid-communication chamber defined in the chamber body portion in a first direction, wherein the first direction is a direction perpendicular to a longitudinal direction of the elongate main body; an actuation mechanism at least partially hollowed and insertable into the fluid-communication chamber, wherein a top thereof protrudes outside the fluid-communication chamber, and a bottom thereof is received in the fluid-communication chamber, and has a bottom inlet hole defined therein; a first vertical elastic hollow member having a lower end disposed on a bottom face of the fluid communication chamber, wherein at least a portion of an upper portion thereof is inserted into the actuation mechanism through the bottom inlet hole; a first fluid communication channel defined in the chamber body portion in a direction away from the cosmetic-fluid storage space; a second fluid communication channel defined in the chamber body portion to fluid-communicate with the cosmetic-fluid storage space; and a cosmetic-fluid outlet structure configured to communicate with the first fluid communication channel, wherein the cosmetic-fluid outlet structure has a fluid discharging hole defined in a distal end thereof and exposed to an outside of the dispenser, wherein a top of the chamber body portion has a first round concaved top portion having an opening defined therein through which the actuation mechanism passes into the chamber, wherein an outer face of the top of the actuation mechanism has a shape conformal to a round concaved shape of the round concaved top portion.

[0060] In one implementation of the third aspect, the cosmetic-fluid dispenser further comprise: an inner cap coupled to one longitudinal end of the elongate main body, the inner cap having a second round concaved top portion corresponding in position to the first round concaved top and having a shape conformal to the shape of the first round concaved top portion, wherein the second round concaved top portion has an opening defined therein through which the actuation mechanism passes into the chamber; an outer cap having a receiving space for receiving the distal cosmetic-fluid outlet structure, wherein the outer cap is removably engaged with the inner cap, wherein the receiving space is defined as a cylindrical hollow inner space for partially receiving the inner cap.

[0061] In one implementation of the third aspect, wherein each of the first and second fluid communication channels extends in a second direction, wherein the second direction is the longitudinal direction of the elongate main body, wherein a hollow cylindrical tube has an inner diameter greater than an diameter of the second fluid communication channel, and the hollow cylindrical tube protrudes from an outer face of the chamber body portion into the fluid storage space defined in the main body, wherein a hollow cover portion is partially fitted into the hollow cylindrical tube and has a first opening defined at a proximal end thereof communicating with the second fluid communication channel, and has a second opening defined at a distal end thereof communicating with the fluid storage space, wherein closing/opening means is configured to reversibly open and close the second opening defined in the cover portion, wherein the closing/opening means is disposed in the cover portion and is movable, wherein a closing/opening means stopper has an annular shape and protrudes inwardly from an inner circumference of the cover portion to limit movement of the closing/opening means.

[0062] In one implementation of the third aspect, the cover portion has an outer portion disposed out of the hollow cylindrical tube, wherein the outer portion defines the second opening defined therein, wherein the outer portion has a hollow truncated conical shape.

[0063] In one implementation of the third aspect, wherein the hollow cylindrical tube has an annular groove defined in the inner face thereof while the cover portion has an annular protrusion defined on an outer face thereof, wherein the annular protrusion is engaged into the annual groove; alternatively, the hollow cylindrical tube has an annular protrusion defined on the inner face thereof while the cover portion has an annular groove defined in an outer face thereof, wherein the annular protrusion is engaged into the annual groove; and wherein the inner space of the hollow cylindrical tube is configured to fluid-communicate with the second fluid communication channel and to fluid-communicate with the second opening of the cover portion.

[0064] In one implementation of the third aspect, wherein the first elastic member is configured such that elastic deformation of the first elastic member allows up and down movements of the actuation mechanism to be reversible, wherein when an external force is applied to the actuation mechanism, a first volume of cosmetic fluid contained in the fluid-communication chamber flows through the first fluid communication channel into the cosmetic-fluid outlet structure, wherein when the external force applied to the actuation mechanism is released, cosmetic fluid of an amount equal to the first volume flows from the cosmetic-fluid storage space through the second fluid communication channel into the fluid-communication chamber.

[0065] In one implementation of the third aspect, wherein the actuation mechanism includes: a hollow piston portion formed in a cylindrical shape to be inserted into the fluid-communication chamber, wherein the hollow piston portion has a bottom inlet hole defined in a bottom portion thereof, wherein the hollow piston portion has a fluid receiving space defined therein; a head support portion extending upward from the hollow piston portion, wherein the head support portion has an outer diameter smaller than an outer diameter of the hollow piston portion and is formed in a cylindrical shape and has a hole defined in a top portion thereof; a head including: a pressed portion to which external force is applied and which is exposed out of the fluid-communication chamber; and an inserted rib which extends from a bottom of the pressed portion and is inserted into the hole defined in the head support portion; and first and second sealing rings spaced apart from each other in a vertical direction and disposed around an outer surface of the hollow piston portion.

[0066] In one implementation of the third aspect, wherein the hollow piston portion has first and second lateral through-holes defined therein in opposite lateral points of the hollow piston portion respectively, wherein the first and second lateral through-holes communicate with the bottom inlet hole and the inner receiving space of the hollow piston portion, wherein the first and second lateral through-holes communicate with the first and second fluid communication channels respectively, wherein the first sealing ring surrounds a lower portion of an outer periphery of the hollow piston portion, while the second sealing ring surrounds an upper portion of the outer periphery of the hollow piston portion, wherein both of the first and second lateral through-holes are defined between the first and second sealing rings in a vertical direction, wherein each of the first and second lateral through-holes extends horizontally.

[0067] In one implementation of the third aspect, wherein the first fluid communication channel communicates with the fluid outlet structure, wherein the second fluid communication channel communicates with the fluid storage space defined in the main body, wherein each of the first and second fluid communication channels extends in a second direction, wherein the second direction is the longitudinal direction of the elongate main body, wherein when external force is applied to the actuation mechanism, the first elastic member is compressed in a compressed mode such that the piston portion is lowered, and, thus, cosmetic fluid contained within the inner fluid receiving space of the hollow piston portion flows through the first lateral through-hole and then through the first fluid communication channel, wherein at the compressed mode, the first fluid communication channel and the second fluid communication channel are positioned between the first and the second sealing rings at a height level thereof, wherein when the external force applied to the actuation mechanism is released, the first elastic member is restored at a restored mode such that the piston portion rises up in the fluid-communication chamber, and, thus, cosmetic fluid flows from the fluid storage space of the main body through the second fluid communication channel and then the second lateral through-hole into the inner fluid receiving space of the hollow piston portion.

[0068] In one implementation of the third aspect, wherein when the piston portion is lowered down or raised up, the first sealing ring slides along an inner circumferential face of the fluid-communication chamber, wherein when the piston portion is lowered down or raised up, the second sealing ring slides along an inner circumferential face of the fluid-communication chamber to prevent the cosmetic fluid contained in the fluid-communication chamber from flowing out of the fluid-communication chamber, wherein the first and second sealing rings are spaced apart from each other in a vertical direction, thereby preventing air from flowing into the fluid-communication chamber.

[0069] In one implementation of the third aspect, wherein the cosmetic-fluid dispenser comprises an elongate fluid-supply tube detachably inserted into the inner space of the elongate main body, wherein the elongate fluid-supply tube has an elongate inner space defined therein, wherein the inner space of the elongate fluid-supply tube is partitioned into a first inner sub-space and a second inner sub-space, wherein volumes of the first inner sub-space and the second inner sub-space vary reversibly in a complementary manner to each other, wherein the first inner sub-space contains therein the cosmetic fluid to be delivered into the fluid-communication chamber, while the second sub-space contains therein air flowing from an outside of the dispenser, wherein when external force applied to the actuation mechanism is released, a first volume of cosmetic-fluid stored in the first inner sub-space passes through the second fluid-communication channel into the fluid communication chamber, and, at the same time, the volume of the first inner sub-space is reduced by the first volume while the volume of the second inner sub-space is expanded by the first volume.

[0070] In one implementation of the third aspect, wherein an O-ring is provided on an outer face of a first longitudinal end of the cosmetic elongate fluid-supply tube, while an annular groove into which the O-ring is seated is defined in an inner face of the elongate main body such that the cosmetic elongate fluid-supply tube and the elongate main body are tightly coupled to each other, wherein the first longitudinal end faces the chamber body portion, wherein a second longitudinal end of the cosmetic elongate fluid-supply tube is air-tightly blocked by a blocking portion having an air communication channel defined therein.

[0071] In one implementation of the third aspect, wherein the cosmetic-fluid dispenser comprises an elongate fluid-supply tube detachably inserted into the inner space of the elongate main body, wherein the elongate fluid-supply tube has an elongate inner space defined therein, wherein the inner space of the elongate fluid-supply tube is partitioned into a first inner sub-space and a second inner sub-space by a compressing member, wherein volumes of the first inner sub-space and the second inner sub-space vary reversibly in a complementary manner to each other, wherein the first inner sub-space contains therein the cosmetic fluid to be delivered into the fluid-communication chamber, while the second sub-space contains therein air flowing from an outside of the dispenser, wherein the cosmetic elongate fluid-supply tube has a first longitudinal end facing the chamber body portion, wherein the cosmetic elongate fluid-supply tube has a sealing cap defining a second longitudinal end of the cosmetic elongate fluid-supply tube, wherein the second longitudinal end is opposite the first longitudinal end, wherein the sealing cap is tightly inserted into an opening in the second longitudinal end, wherein the sealing cap has an air communication channel defined therein communicating with the second inner sub-space, wherein the second inner sub-space is defined between the compressing member and the sealing cap, wherein the volume of the first inner sub-space is reduced by a first volume via movement of the compressing member toward the first longitudinal end together with compressing the fluid in the first sub-space while the volume of the second inner sub-space is forcedly expanded by the first volume via the air-communication hole allowing air-communication between the second inner sub-space and an exterior space of the cosmetic-fluid dispenser.

[0072] In one implementation of the third aspect, wherein the cosmetic-fluid outlet structure includes: a distal portion defining a downstream portion of the cosmetic-fluid outlet structure, wherein the distal portion has a fluid discharging hole in a tip end thereof for discharging the cosmetic-fluid, wherein the fluid discharging hole is out of the inner cap; and a proximal portion defining an upstream portion of the cosmetic-fluid outlet structure, wherein the proximal portion is inserted into an inner elongate space defined in the inner cap, wherein the proximal portion has a first inserted portion connecting the distal portion and a second inserted portion facing the first fluid communication channel, wherein a blocking partition is formed between the first and second inserted portions, wherein an elongate spacing is defined between an outer face of the proximal portion and an inner face of the inner elongate space defined in the inner cap, wherein a first fluid-communication space is defined in the first inserted portion to be in communication with the fluid discharging hole, wherein the first inserted portion has a first hole defined therein for fluid communication between the first fluid-communication space and the elongate spacing, wherein the second inserted portion has a second fluid-communication space defined therein in communication with the first fluid communication channel, wherein the second inserted portion has a second hole defined therein for fluid-communication between the second fluid-communication space and the elongate spacing, wherein hole closing/opening means is disposed in the elongate spacing and is configured to open or close the second hole to control flow of the cosmetic fluid through the second hole.

[0073] In one implementation of the third aspect, wherein when the external force is applied to the actuation mechanism, the hole closing/opening means is elastically deformed by a pressure resulting from the cosmetic fluid moving from the fluid communication chamber toward a distal end of the first fluid communication channel, thereby to open the second hole, wherein when the pressure is deactivated, the hole closing/opening means is elastically restored via a restoring force thereof, thereby to close the second hole.

[0074] In one implementation of the third aspect, wherein the cosmetic-fluid outlet structure includes: a distal portion defining a downstream portion of the cosmetic-fluid outlet structure, wherein the distal portion has a fluid discharging hole in a tip end thereof for discharging the cosmetic-fluid, wherein the fluid discharging hole is out of the inner cap; and a proximal portion defining an upstream portion of the cosmetic-fluid outlet structure, wherein the proximal portion is hollow and is inserted into an inner elongate slot defined in the inner cap, wherein the inner elongate slot communicates with the first fluid communication channel, and the inner elongate slot has an inner diameter larger than an inner diameter of the first fluid communication channel, wherein a fluid-outlet adjustment ball is movably disposed in the hollow proximal end toward a distal end of the first fluid communication channel, wherein the fluid-outlet adjustment ball has a diameter greater than an inner diameter of the first fluid communication channel, wherein a second elastic member is disposed in the hollow proximal end in a downstream region of the fluid-outlet adjustment ball.

[0075] In one implementation of the third aspect, wherein when the external force is applied to the actuation mechanism, the cosmetic fluid contained in the fluid communication chamber moves through the first fluid communication channel toward the elongate slot to forcedly move the fluid-outlet adjustment ball toward the fluid discharging hole, thereby to compress the second elastic member, thereby to allow the cosmetic fluid to be discharged through the fluid discharging hole, wherein when the cosmetic fluid depressurizes the fluid-outlet adjustment ball, the fluid-outlet adjustment ball moves to close the distal end of the first fluid communication channel via a restoring force of the second elastic member.

[0076] In a fourth aspect of the present disclosure, there is provided a cosmetic-fluid dispenser comprising: an elongate main body having a cosmetic-fluid storage space defined therein to contain cosmetic fluid therein, wherein the elongate main body has a chamber body portion; a fluid-communication chamber defined in the chamber body portion in a first direction, wherein the first direction is a direction perpendicular to a longitudinal direction of the elongate main body; an actuation mechanism at least partially hollowed and insertable into the fluid-communication chamber, wherein a top thereof protrudes outside the fluid-communication chamber, and a bottom thereof is received in the fluid-communication chamber, and has a bottom inlet hole defined therein; a first vertical elastic hollow member extending along and surrounding an upper portion of the actuation mechanism, wherein the first vertical elastic hollow member allows reversible vertical movement of the actuation mechanism; a first fluid communication channel defined in the chamber body portion in a direction away from the cosmetic-fluid storage space; a second fluid communication channel defined in the chamber body portion to fluid-communicate with the cosmetic-fluid storage space; and a cosmetic-fluid outlet structure configured to communicate with the first fluid communication channel, wherein the cosmetic-fluid outlet structure has a fluid discharging hole defined in a distal end thereof and exposed to an outside of the dispenser, wherein a top of the chamber body portion has a first round concaved top portion having an opening defined therein through which the actuation mechanism passes into the chamber, wherein an outer face of the top of the actuation mechanism has a shape conformal to a round concaved shape of the round concaved top portion, wherein the actuation mechanism includes: a hollow piston portion formed in a cylindrical shape to be inserted into the fluid-communication chamber, wherein the hollow piston portion has the bottom inlet hole defined in a bottom portion thereof, wherein the hollow piston portion has a fluid receiving space defined therein; a head support portion extending upward from the hollow piston portion and having an outer diameter smaller than an outer diameter of the hollow piston portion; and a head supported by the head support portion, wherein the first vertical elastic hollow member has a top end contacting the head.

[0077] In one implementation of the fourth aspect, wherein the head includes: a pressed portion to which an external force is applied and which is exposed out of the fluid-communication chamber; and an inserted rib extending downwards from a bottom of the pressed portion, wherein the pressed portion includes: a cap-shaped portion being circular in a cross section and being open at a bottom thereof, and being hollow and having a blocked top; and an annular rib protruding outward along a rim of a bottom end of the cap-shaped portion, wherein the annular rib defines a bottom opening of the cap-shaped portion and bears against an uppermost inner face of the fluid-communication chamber, wherein the inserted rib protrudes downward from an inner central position of the cap-shaped portion, wherein a first engaging protrusion protrudes horizontally from an outer face of the inserted rib, wherein the head support portion has a rib receiving hole defined in a top thereof through which the inserted rib is inserted, wherein a first engaged groove is defined radially outwards in an inner face of the rib receiving hole and receives therein the first engaging protrusion.

[0078] In one implementation of the fourth aspect, wherein the actuation mechanism includes first and second sealing rings spaced apart from each other in a vertical direction, wherein the first and second sealing rings are disposed around an outer surface of the hollow piston portion, wherein the hollow piston portion has first and second lateral through-holes defined therein in opposite lateral points of the hollow piston portion respectively, wherein the first and second lateral through-holes communicate with the bottom inlet hole and the inner receiving space of the hollow piston portion, wherein the first and second lateral through-holes communicate with the first and second fluid communication channels respectively, wherein both of the first and second lateral through-holes are defined between the first and second sealing rings in a vertical direction, wherein each of the first and second lateral through-holes extends horizontally.

[0079] In one implementation of the fourth aspect, wherein the first fluid communication channel communicates with the fluid outlet structure, wherein the second fluid communication channel communicates with the fluid storage space defined in the main body, wherein each of the first and second fluid communication channels extends in a second direction, wherein the second direction is the longitudinal direction of the elongate main body, wherein when external force is applied to the actuation mechanism, the first elastic member is compressed in a compressed mode such that the piston portion is lowered, and, thus, cosmetic fluid contained within the inner fluid receiving space of the hollow piston portion flows through the first lateral through-hole and then through the first fluid communication channel, wherein at the compressed mode, the first fluid communication channel and the second fluid communication channel are positioned between the first and the second sealing rings at a height level thereof, wherein when the external force applied to the actuation mechanism is released, the first elastic member is restored at a restored mode such that the piston portion rises up in the fluid-communication chamber, and, thus, cosmetic fluid flows from the fluid storage space of the main body through the second fluid communication channel and then the second lateral through-hole into the inner fluid receiving space of the hollow piston portion.

[0080] In one implementation of the fourth aspect, wherein when the piston portion is lowered down or raised up, the first sealing ring slides along an inner circumferential face of the fluid-communication chamber, wherein when the piston portion is lowered down or raised up, the second sealing ring slides along an inner circumferential face of the fluid-communication chamber to prevent the cosmetic fluid contained in the fluid-communication chamber from flowing out of the fluid-communication chamber, wherein the first and second sealing rings are spaced apart from each other in a vertical direction, thereby preventing air from flowing into the fluid-communication chamber.

[0081] In one implementation of the fourth aspect 41, wherein each of the first and second fluid communication channels extends in a second direction, wherein the second direction is the longitudinal direction of the elongate main body, wherein a hollow cylindrical tube has an inner diameter greater than an diameter of the second fluid communication channel, and the hollow cylindrical tube protrudes from an outer face of the chamber body portion into the fluid storage space defined in the main body, wherein a hollow cover portion is partially fitted into the hollow cylindrical tube and has a first opening defined at a proximal end thereof communicating with the second fluid communication channel, and has a second opening defined at a distal end thereof communicating with the fluid storage space, wherein closing/opening means is configured to reversibly open and close the second opening defined in the cover portion, wherein the closing/opening means is disposed in the cover portion and is movable, wherein a closing/opening means stopper has an annular shape and protrudes inwardly from an inner circumference of the cover portion to limit movement of the closing/opening means.

[0082] In one implementation of the fourth aspect, wherein the fluid communication chamber has an upper portion and a lower portion, wherein the upper portion thereof has a larger diameter than the lower portion, wherein a spacing is defined between the first elastic member and an inner wall face of the upper portion of the fluid communication chamber.

[0083] In one implementation of the fourth aspect, wherein a hollow cylindrical portion further upwards extends from an upper portion of the hollow piston portion, wherein the hollow cylindrical portion has a lower portion surrounding the upper portion of the hollow piston portion, wherein the hollow cylindrical portion is disposed in the upper portion of the fluid communication chamber.

[0084] In one implementation of the fourth aspect, wherein the cover portion has an outer portion disposed out of the hollow cylindrical tube, wherein the outer portion defines the second opening defined therein, wherein the outer portion has a hollow truncated conical shape.

[0085] In one implementation of the fourth aspect, wherein the hollow cylindrical tube has an annular groove defined in the inner face thereof while the cover portion has an annular protrusion defined on an outer face thereof, wherein the annular protrusion is engaged into the annual groove; alternatively, the hollow cylindrical tube has an annular protrusion defined on the inner face thereof while the cover portion has an annular groove defined in an outer face thereof, wherein the annular protrusion is engaged into the annual groove; and wherein the inner space of the hollow cylindrical tube is configured to fluid-communicate with the second fluid communication channel and to fluid-communicate with the second opening of the cover portion.

[0086] In one implementation of the fourth aspect, wherein each of the first and second fluid communication channels extends in a second direction, wherein the second direction is the longitudinal direction of the elongate main body, wherein a hollow cylindrical tube has an inner diameter greater than an diameter of the second fluid communication channel, and the hollow cylindrical tube protrudes from an outer face of the chamber body portion into the fluid storage space defined in the main body, wherein a hollow cover portion is partially fitted into the hollow cylindrical tube and has a first opening defined at a proximal end thereof communicating with the second fluid communication channel, and has a second opening defined at a distal end thereof communicating with the fluid storage space, wherein an inner diameter of the cover portion decreases gradually from the first opening thereof to the second opening thereof, wherein a closing/opening ball is configured to reversibly open and close the second opening defined in the cover portion, wherein the ball is disposed in the cover portion and is movable, wherein a spring is disposed in the cover portion and is configured to push the ball toward the second opening.

[0087] In one implementation of the fourth aspect, wherein the hollow cylindrical tube has an annular groove defined in the inner face thereof while the cover portion has an annular protrusion defined on an outer face thereof, wherein the annular protrusion is engaged into the annual groove; alternatively, the hollow cylindrical tube has an annular protrusion defined on the inner face thereof while the cover portion has an annular groove defined in an outer face thereof, wherein the annular protrusion is engaged into the annual groove; and wherein the inner space of the hollow cylindrical tube is configured to fluid-communicate with the second fluid communication channel and to fluid-communicate with the second opening of the cover portion.

[0088] In one implementation of the fourth aspect, wherein the dispenser comprises: an inner cap coupled to one longitudinal end of the elongate main body, the inner cap having a second round concaved top portion corresponding in position to the first round concaved top and having a shape conformal to the shape of the first round concaved top portion, wherein the second round concaved top portion has an opening defined therein through which the actuation mechanism passes into the chamber; an outer cap having a receiving space for receiving the distal cosmetic-fluid outlet structure, wherein the outer cap is removably engaged with the inner cap, wherein the receiving space is defined as a cylindrical hollow inner space for partially receiving the inner cap.

[0089] In one implementation of the fourth aspect, wherein the first elastic member is configured such that elastic deformation of the first elastic member allows up and down movements of the actuation mechanism to be reversible, wherein when an external force is applied to the actuation mechanism, a first volume of cosmetic fluid contained in the fluid-communication chamber flows through the first fluid communication channel into the cosmetic-fluid outlet structure, wherein when the external force applied to the actuation mechanism is released, cosmetic fluid of an amount equal to the first volume flows from the cosmetic-fluid storage space through the second fluid communication channel into the fluid-communication chamber.

[0090] In one implementation of the fourth aspect, wherein the cosmetic-fluid dispenser comprises an elongate fluid-supply tube detachably inserted into the inner space of the elongate main body, wherein the elongate fluid-supply tube has an elongate inner space defined therein, wherein the inner space of the elongate fluid-supply tube is partitioned into a first inner sub-space and a second inner sub-space, wherein volumes of the first inner sub-space and the second inner sub-space vary reversibly in a complementary manner to each other, wherein the first inner sub-space contains therein the cosmetic fluid to be delivered into the fluid-communication chamber, while the second sub-space contains therein air flowing from an outside of the dispenser, wherein when external force applied to the actuation mechanism is released, a first volume of cosmetic-fluid stored in the first inner sub-space passes through the second fluid-communication channel into the fluid communication chamber, and, at the same time, the volume of the first inner sub-space is reduced by the first volume while the volume of the second inner sub-space is expanded by the first volume.

[0091] In one implementation of the fourth aspect, wherein the cosmetic-fluid dispenser comprises an elongate fluid-supply tube detachably inserted into the inner space of the elongate main body, wherein the elongate fluid-supply tube has an elongate inner space defined therein, wherein the inner space of the elongate fluid-supply tube is partitioned into a first inner sub-space and a second inner sub-space by a compressing member, wherein volumes of the first inner sub-space and the second inner sub-space vary reversibly in a complementary manner to each other, wherein the first inner sub-space contains therein the cosmetic fluid to be delivered into the fluid-communication chamber, while the second sub-space contains therein air flowing from an outside of the dispenser, wherein the cosmetic elongate fluid-supply tube has a first longitudinal end facing the chamber body portion, wherein the cosmetic elongate fluid-supply tube has a sealing cap defining a second longitudinal end of the cosmetic elongate fluid-supply tube, wherein the second longitudinal end is opposite the first longitudinal end, wherein the sealing cap is tightly inserted into an opening in the second longitudinal end, wherein the sealing cap has an air communication channel defined therein communicating with the second inner sub-space, wherein the second inner sub-space is defined between the compressing member and the sealing cap, wherein the volume of the first inner sub-space is reduced by a first volume via movement of the compressing member toward the first longitudinal end together with compressing the fluid in the first sub-space while the volume of the second inner sub-space is forcedly expanded by the first volume via the air-communication hole allowing air-communication between the second inner sub-space and an exterior space of the cosmetic-fluid dispenser.

[0092] In one implementation of the fourth aspect, wherein an O-ring is provided on an outer face of a first longitudinal end of the cosmetic elongate fluid-supply tube, while an annular groove into which the O-ring is seated is defined in an inner face of the elongate main body such that the cosmetic elongate fluid-supply tube and the elongate main body are tightly coupled to each other, wherein the first longitudinal end faces the chamber body portion, wherein a second longitudinal end of the cosmetic elongate fluid-supply tube is air-tightly blocked by a blocking portion having an air communication channel defined therein.

[0093] In one implementation of the fourth aspect8, wherein the cosmetic-fluid outlet structure includes: a distal portion defining a downstream portion of the cosmetic-fluid outlet structure, wherein the distal portion has a fluid discharging hole in a tip end thereof for discharging the cosmetic-fluid, wherein the fluid discharging hole is out of the inner cap; and a proximal portion defining an upstream portion of the cosmetic-fluid outlet structure, wherein the proximal portion is inserted into an inner elongate space defined in the inner cap, wherein the proximal portion has a first inserted portion connecting the distal portion and a second inserted portion facing the first fluid communication channel, wherein a blocking partition is formed between the first and second inserted portions, wherein an elongate spacing is defined between an outer face of the proximal portion and an inner face of the inner elongate space defined in the inner cap, wherein a first fluid-communication space is defined in the first inserted portion to be in communication with the fluid discharging hole, wherein the first inserted portion has a first hole defined therein for fluid communication between the first fluid-communication space and the elongate spacing, wherein the second inserted portion has a second fluid-communication space defined therein in communication with the first fluid communication channel, wherein the second inserted portion has a second hole defined therein for fluid-communication between the second fluid-communication space and the elongate spacing, wherein hole closing/opening means is disposed in the elongate spacing and is configured to open or close the second hole to control flow of the cosmetic fluid through the second hole.

[0094] In one implementation of the fourth aspect, wherein when the external force is applied to the actuation mechanism, the hole closing/opening means is elastically deformed by a pressure resulting from the cosmetic fluid moving from the fluid communication chamber toward a distal end of the first fluid communication channel, thereby to open the second hole, wherein when the pressure is deactivated, the hole closing/opening means is elastically restored via a restoring force thereof, thereby to close the second hole.

[0095] In one implementation of the fourth aspect, wherein the cosmetic-fluid outlet structure includes: a distal portion defining a downstream portion of the cosmetic-fluid outlet structure, wherein the distal portion has a fluid discharging hole in a tip end thereof for discharging the cosmetic-fluid, wherein the fluid discharging hole is out of the inner cap; and a proximal portion defining an upstream portion of the cosmetic-fluid outlet structure, wherein the proximal portion is hollow and is inserted into an inner elongate slot defined in the inner cap, wherein the inner elongate slot communicates with the first fluid communication channel, and the inner elongate slot has an inner diameter larger than an inner diameter of the first fluid communication channel, wherein a fluid-outlet adjustment ball is movably disposed in the hollow proximal end toward a distal end of the first fluid communication channel, wherein the fluid-outlet adjustment ball has a diameter greater than an inner diameter of the first fluid communication channel, wherein a second elastic member is disposed in the hollow proximal end in a downstream region of the fluid-outlet adjustment ball.

[0096] In one implementation of the fourth aspect, wherein when the external force is applied to the actuation mechanism, the cosmetic fluid contained in the fluid communication chamber moves through the first fluid communication channel toward the elongate slot to forcedly move the fluid-outlet adjustment ball toward the fluid discharging hole, thereby to compress the second elastic member, thereby to allow the cosmetic fluid to be discharged through the fluid discharging hole, wherein when the cosmetic fluid depressurizes the fluid-outlet adjustment ball, the fluid-outlet adjustment ball moves to close the distal end of the first fluid communication channel via a restoring force of the second elastic member.

[0097] In accordance with the present disclosure, the cosmetic-fluid dispenser may be capable of smoothly dispensing the constant amount of cosmetic-fluid, thereby to improve user experience.

[0098] Further, in accordance with the present disclosure, the cosmetic-fluid dispenser may always sealed to prevent deterioration and hardening of the cosmetic liquid.

[0099] Further, according to the present disclosure, it is possible to provide the cosmetic fluid dispenser capable of uniformly discharging a certain amount of cosmetic liquid without being influenced by an external force.

[0100] In addition, according to the present disclosure, it is possible to provide the cosmetic fluid dispenser capable of effectively preventing deterioration of the cosmetic liquid contained therein by stably blocking the inflow of air or the like from the outside thereto.

[0101] In addition, according to the present disclosure, there is provided the cosmetic fluid dispenser which is easy to carry because leakage of cosmetic liquid due to an uncontrolled external force thereto may not be suppressed.

[0102] In addition, according to the present disclosure, it is possible to provide the narrow and elongate cosmetic fluid dispenser that is slim and small in size while providing an excellent esthetic feeling because no protruding portion in a width direction is formed.

[0103] Further, according to the present disclosure, it is possible to provide the cosmetic fluid dispenser wherein the elastic member controlling the movement of the actuation mechanism does not contact the cosmetic liquid, and other unnecessary members are omitted in the flow channel of the cosmetic liquid such that characteristics of the cosmetic liquid may be maintained in a non-polluted state for a long period of time.

BRIEF DESCRIPTION OF THE DRAWINGS

[0104] FIG. 1 and FIG. 2 are perspective views illustrating a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0105] FIG. 3 is an exploded perspective view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0106] FIG. 4 is a cross-sectional view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0107] FIG. 5 and FIG. 6 are schematic views for illustrating a state where an external force is applied to an actuation mechanism of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0108] FIG. 7 is a schematic view for illustrating a state where an external force applied to an actuation mechanism of a cosmetic-fluid dispenser according to one embodiment of the present disclosure is released;

[0109] FIG. 8 is an exploded perspective view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0110] FIG. 9 and FIG. 10 are schematic views for illustrating a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0111] FIG. 11 and FIG. 12 are perspective views illustrating a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0112] FIG. 13 is an exploded perspective view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0113] FIG. 14 is a cross-sectional view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0114] FIG. 15 and FIG. 16 are schematic views for illustrating a state where an external force is applied to an actuation mechanism of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0115] FIG. 17 is a schematic view for illustrating a state where an external force applied to an actuation mechanism of the cosmetic-fluid dispenser according to one embodiment of the present disclosure is released;

[0116] FIG. 18 is an exploded perspective view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0117] FIG. 19 and FIG. 20 are schematic views for illustrating a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0118] FIG. 21A is a perspective view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0119] FIG. 21B is a perspective view illustrating a state where a cap is separated from a man body in the cosmetic-fluid dispenser in FIG. 21A.

[0120] FIG. 22A is an exploded perspective view of the cosmetic-fluid dispenser of FIG. 21A.

[0121] FIG. 22B illustrates a fluid-communication chamber in FIG. 22A.

[0122] FIG. 23 is a cross-sectional view of the cosmetic-fluid dispenser according to FIG. 21A.

[0123] FIG. 24 is a cross-sectional view of the cosmetic-fluid dispenser according to FIG. 21B.

[0124] FIG. 25 and FIG. 26 are schematic views for illustrating a state where an external force is applied to an actuation mechanism of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0125] FIG. 27 is a schematic view for illustrating a state where an external force applied to an actuation mechanism of the cosmetic-fluid dispenser according to one embodiment of the present disclosure is released.

[0126] FIG. 28 is an exploded perspective view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure;

[0127] FIGS. 29 and 30 are schematic views for illustrating a cosmetic-fluid dispenser according to one embodiment of the present disclosure;

[0128] FIG. 31 is a cross-sectional view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0129] FIGS. 32 and 33 are schematic views for illustrating a state where an external force is applied to an actuation mechanism of the cosmetic-fluid dispenser of FIG. 31.

[0130] FIG. 34 is a perspective view showing a state of coupling between an elongate main body and a cap according to one embodiment of the present disclosure.

[0131] FIG. 35 is a perspective view showing a state of separation between the elongate main body and the cap in FIG. 34.

[0132] FIG. 36 is a perspective view illustrating of a cosmetic-fluid dispenser in accordance with one embodiment.

[0133] FIG. 37 is a perspective view illustrating a state where a cap is separated from a man body in the cosmetic-fluid dispenser in FIG. 36.

[0134] FIG. 38 is a cross-sectional view of the cosmetic-fluid dispenser in FIG. 37.

[0135] FIG. 39 is an exploded perspective view of the cosmetic-fluid dispenser FIG. 36.

[0136] FIG. 40 is a cross-sectional view of a front portion of the elongate main body in FIG. 37.

[0137] FIG. 41 is a schematic view for illustrating an actuation mechanism being subjected to an external force in the FIG. 40.

[0138] FIG. 42 is a schematic representation of the external force applied to the actuation mechanism in FIG. 41.

[0139] FIG. 43 is a perspective view of an actuation mechanism and first elastic member of FIG. 42.

[0140] FIG. 44 is a perspective view of an actuation mechanism and first elastic member according to another embodiment of the present disclosure.

[0141] FIG. 45 is a view schematically showing the actuation mechanism to which an external force is applied according to another embodiment of the present disclosure.

[0142] FIG. 46 is a schematic representation of the external force applied to the actuation mechanism in FIG. 45.

[0143] FIG. 47 is a perspective view of the actuation mechanism and first elastic member of FIG. 46.

[0144] FIG. 48 is a perspective view of the actuation mechanism and first elastic member according to still another embodiment of the present disclosure.

[0145] FIG. 49 is a cross-sectional view of the front portion of the elongate main body according to another embodiment of the present disclosure.

[0146] FIG. 50 is a schematic representation of the external force applied to the actuation mechanism in FIG. 49.

[0147] FIG. 51 is a cross-sectional view of the front portion of the elongate main body according to still further another embodiment of the present disclosure.

[0148] FIG. 52 is a schematic representation of the external force applied to the actuation mechanism in FIG. 51.

[0149] FIG. 53 is a perspective view of the cosmetic-fluid dispenser according to an embodiment of the present disclosure.

[0150] FIG. 54 shows a state in which a cap is separated from an elongate main body in FIG. 53.

[0151] FIG. 55 is a cross-sectional view of FIG. 54.

[0152] FIG. 56 is an exploded perspective view of FIG. 53.

[0153] FIG. 57 is a section view of the front portion of the elongate main body in the FIG. 55.

[0154] FIG. 58 is a view schematically showing the actuation mechanism to which an external force is applied in the FIG. 57

[0155] FIG. 59 is a perspective view of the actuation mechanism and the first elastic member in FIG. 56.

[0156] FIG. 60 is a perspective view of the actuation mechanism and first elastic member according to still further another embodiment of the present disclosure.

[0157] FIG. 61 is a sectional view of the front portion of the elongate main body according to still further another embodiment of the present disclosure.

[0158] FIG. 62 is a diagram schematically showing an external force applied to the actuation mechanism in FIG. 61.

[0159] FIG. 63 is a cross-sectional view of the front portion of the elongate main body according to still further another embodiment of the present disclosure.

[0160] FIG. 64 is a schematic view showing an external force applied to the actuation mechanism in FIG. 63.

[0161] FIG. 65 is an enlarged view of a portion for controlling inflow of liquid in the rear portion of the elongate main body in FIG. 63.

[0162] FIG. 66 is an exploded perspective view of FIG. 65.

[0163] For simplicity and clarity of illustration, elements in the figures are not necessarily drawn to scale. The same reference numbers in different figures denote the same or similar elements, and as such perform similar functionality.

DETAILED DESCRIPTIONS

[0164] Examples of various embodiments are illustrated and described further below. It will be understood that the description herein is not intended to limit the claims to the specific embodiments described. On the contrary, it is intended to cover plate alternatives, modifications, and equivalents as may be included within the spirit and scope of the present disclosure as defined by the appended claims.

[0165] It will be understood that, although the terms "first", "second", "third", and so on may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section described below could be termed a second element, component, region, layer or section, without departing from the spirit and scope of the present disclosure.

[0166] It will be understood that when an element or layer is referred to as being "connected to", or "coupled to" another element or layer, it can be directly on, connected to, or coupled to the other element or layer, or one or more intervening elements or layers may be present. In addition, it will also be understood that when an element or layer is referred to as being "between" two elements or layers, it can be the only element or layer between the two elements or layers, or one or more intervening elements or layers may also be present.

[0167] Spatially relative terms, such as "beneath," "below," "lower," "under," "above," "upper," and the like, may be used herein for ease of explanation to describe one element or feature's relationship to another element s or feature s as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or in operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" or "under" other elements or features would then be oriented "above" the other elements or features. Thus, the example terms "below" and "under" can encompass both an orientation of above and below. The device may be otherwise oriented for example, rotated 90 degrees or at other orientations, and the spatially relative descriptors used herein should be interpreted accordingly.

[0168] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used herein, the singular forms "a" and "an" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises", "comprising", "includes", and "including" when used in this specification, specify the presence of the stated features, integers, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, operations, elements, components, and/or portions thereof. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Expression such as "at least one of" when preceding a list of elements may modify the entire list of elements and may not modify the individual elements of the list.

[0169] Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this inventive concept belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0170] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. The present disclosure may be practiced without some or all of these specific details. In other instances, well-known process structures and/or processes have not been described in detail in order not to unnecessarily obscure the present disclosure.

[0171] FIG. 1 and FIG. 2 are perspective views illustrating a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0172] Referring to FIG. 1 and FIG. 2, the cosmetic-fluid dispenser according to one embodiment of the present disclosure includes an actuation mechanism 140 configured to allow selective dispensing of a cosmetic-fluid; a elongate main body 110 having opposite first and second end portions, and a first opening 113 defined in a side portion thereof, wherein the elongate main body contains therein a cosmetic-fluid, wherein the actuation mechanism 140 passes through the first opening 113; a fluid-communication chamber 130 disposed in the first end portion of the elongate main body 110, wherein the fluid-communication chamber 130 fluid-communicates with the elongate main body 110, wherein the fluid-communication chamber 130 is configured to cooperate with the actuation mechanism 140 to dispense a cosmetic-fluid out of the elongate main body; a distal cosmetic-fluid outlet structure 171 fluid-communicating with the fluid-communication chamber 130, wherein the distal cosmetic-fluid outlet structure 171 is disposed out of the main body 110; and a cap 180 removably coupled to the elongate main body 110 at the first end portion 115.

[0173] In this connection, the cosmetic-fluid stored in a storage space of the elongate main body 110 has a sufficient viscosity to be discharged through the distal cosmetic-fluid outlet structure 171. The cosmetic-fluid is not particularly limited.

[0174] When the cap 180 is separated from the elongate main body 110, the distal cosmetic-fluid outlet structure 171 is exposed. Conversely, when the cap 180 is combined with the elongate main body 110, the distal cosmetic-fluid outlet structure 171 is concealed within the cap 180. After the cap 180 is separated from the elongate main body 110, when an external force is applied to the actuation mechanism 140, a certain amount of the cosmetic fluid flows out of the main body 110 through the distal cosmetic-fluid outlet structure 171.

[0175] FIG. 3 is an exploded perspective view of a cosmetic-fluid dispenser according to an embodiment of the present disclosure. FIG. 4 is a cross-sectional view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0176] Referring to FIG. 3 and FIG. 4, the elongate main body 110 is hollow and having a fluid receiving space formed therein, in which the cosmetic-fluid may be stored. The elongate main body 110 may be made of a transparent material or a translucent material so that the cosmetic-fluid contained therein may be visible to the outside. Such materials may include glass or synthetic resin materials. In the side portion of the elongate main body 110, the first opening 113 is defined, through which the actuation mechanism 140 passes.

[0177] The fluid-communication chamber 130 is disposed within the elongate main body 110. The fluid-communication chamber 130 includes a chamber body 132 having a cylindrical space defined therein, and a cosmetic-fluid outlet guide 131 in fluid-communication with the chamber body 132. The cosmetic-fluid outlet guide 131 is in fluid-communication with the distal cosmetic-fluid outlet structure 171. The chamber body 132 has a fluid-inlet hole 132a formed in a bottom thereof, a fluid-outlet hole 132b fluid-communicating with the cosmetic-fluid outlet guide 131, and a second opening 132c position-corresponding to the first opening 113. The cosmetic fluid stored in the main body 110 flows into the cylindrical space in the chamber body 132 through the fluid-inlet hole 132a.

[0178] The actuation mechanism 140 includes a pushed portion 141a protruding out of the elongate main body 110 to receive an external force, an insertable cylinder 141b connected to the pushed portion 141a and passing through the first and second openings 113 and 132c, and a first elastic member 143 disposed on a bottom of the insertable cylinder 141b and within the cylindrical space in the chamber body 132. The first elastic member 143 is elastically deformed via the insertable cylinder 141b when an external force is applied to the pushed portion 141a. Then, the first elastic member 143 is restored by an elastic restoring force when the external force is released, thereby to allow the insertable cylinder 141b to return to its home position.

[0179] The top of the first elastic member 143 is in contact with the bottom of the insertable cylinder 141b, and the bottom of the first elastic member 143 is in contact with a hole-opening/closing member 148. When the pushed portion 141a is moved in a first direction (for example, downwards) by an external force, the first elastic member 143 in contact with the pushed portion 141a and the insertable cylinder 141b is elastically compression-deformed. When the applied external force is released, the first elastic member 143 is elastically expansion-deformed in a second direction by the elastic restoring force. As a result, the pushed portion 141a is moved in the second direction (for example, upwards) opposite to the first direction.

[0180] The actuation mechanism 140 also includes the hole-opening/closing member 148 disposed on the bottom of the first elastic member 143 and within the cylindrical space in the chamber body 132. The hole-opening/closing member 148 is configured to open or close the fluid-inlet hole 132a based on the presence or absence of the external force applied to the pushed portion 141a.

[0181] The hole-opening/closing member 148 is formed in a shape corresponding to the shape of the fluid-inlet hole 132a. In this connection, the hole-opening/closing member 148 may be made of a material having a less density that that of the fluid.

[0182] In one example, when the cross-section of the fluid-inlet hole 132a is circular, the hole-opening/closing member 148 has a spherical shape as shown in FIG. 3. As such, the hole-opening/closing member 148 realizes selective closing of the fluid-inlet hole 132a.

[0183] The hole-opening/closing member 148 is urged downwards by the first elastic member 143 being elastically compression-deformed by the external force to close the fluid-inlet hole 132a. Then, when the external force is released, the pressing force of the first elastic member 143 thereto decreases, the hole-opening/closing member 148 rises up to at least partially open the fluid-inlet hole 132a.

[0184] In this connection, partially opening the fluid-inlet hole 132a means that a fine clearance is defined such that the cosmetic-fluid contained in the storage space of the elongate main body 110 can flow through the fluid-inlet hole 132a.

[0185] Specifically, the hole-opening/closing member 148 completely contacts the fluid-inlet hole 132a by the first elastic member 143 to close the fluid-inlet hole 132a. Alternatively, when no external force is applied to the first elastic member 143, the first elastic member 143 less pushes the hole-opening/closing member 148 toward the fluid-inlet hole 132a, thereby to allow flow of the cosmetic-fluid between the hole-opening/closing member 148 and the fluid-inlet hole 132a.

[0186] The fluid-inlet hole 132a may be formed in a shape conforming to a contour of an outer surface of the hole-opening/closing member 148 such that at least a portion of the hole-opening/closing member 148 is inserted into the fluid-inlet hole 132a. The fluid inlet hole 132a serves as a passage to enable fluid-communication between the fluid storage space of the elongate main body 110 and the fluid accommodation space of the chamber body 132. In this regard, an interface between the fluid-inlet hole 132a and the fluid receiving space of the chamber body 132 of may be rounded so that at least a portion of the hole-opening/closing member 148 is inserted therein.

[0187] The upper end of the first elastic member 143 is in contact with the lower end of the insertable cylinder 141b, and the lower end of the first elastic member 143 is in contact with the hole-opening/closing member 148. In this connection, the first elastic member 143 may be configured to gradually decrease in its cross-sectional size from the top to the bottom thereof.

[0188] Specifically, the upper end of the first elastic member 143, which is in contact with the insertable cylinder 141b, has a cross-section size corresponding to that of the lower end of the insertable cylinder 141b to receive effectively the external force from the insertable cylinder 141b. On the other hand, the lower end of the first elastic member 143 contacting the hole-opening/closing member 148 is formed to have a smaller cross-sectional size than the maximum diameter of the hole-opening/closing member 148 such that the lower end of the first elastic member 143 is reliably in contact with the outer surface of the hole-opening/closing member 148.

[0189] Further, since the lower end of the first elastic member 143, which is in contact with the outer surface of the hole-opening/closing member 148, has a smaller cross-sectional area than that of the upper end thereof, the applied external force is gradually concentrated toward the lower end thereof. Thus, this makes it possible to more efficiently implement the closing of the fluid-inlet hole 132a by the hole-opening/closing member 148.

[0190] The actuation mechanism 140 includes a proximal sealing ring 145 coupled to the insertable cylinder 141b. The proximal sealing ring 145 serves to prevent the escape of cosmetic fluid out of the cylindrical space of the chamber body when the insertable cylinder 141b moves from the first direction to the second direction or from the second direction to the first direction.

[0191] The proximal sealing ring 145 prevents air flow in and out of the cylindrical space of the chamber body through the first opening 113. The cylindrical space in the chamber body 132 is kept airtight by the proximal sealing ring 145 to prevent the cosmetic fluid in the cylindrical space in the chamber body from flowing out of the space through the first opening 113. This prevents cosmetic-fluid leakage through the first opening 113 in the process of repeatedly applying an external force to the actuation mechanism 140 in order that the user uses the cosmetic-fluid. Thus, the cosmetic-fluid is not deposited on a part of the user's body. Further, this prevents the cosmetic-fluid from getting on the outer surface of the cosmetic-fluid dispenser.

[0192] When moving the actuation mechanism 140 from the first direction to the second direction or from the second direction to the first direction, the proximal sealing ring 145 moves along the cylindrical inner side wall of the chamber body 132 while being coupled to the insertable cylinder 141b. This prevents leakage of the cosmetic-fluid received within the cylindrical space through the first opening 113.

[0193] Specifically, the proximal sealing ring 145 is engaged with the proximal end 141f of the inserted portion of the insertable cylinder 141b. The proximal sealing ring 145 projects further outward than the outer diameter of the portion 141d between the proximal end and the distal end of the inserted portion of the insertable cylinder 141b. Thereby, the proximal sealing ring 145 is compressed by the cylindrical inner wall of the chamber body 132 to have a size corresponding to the diameter of the cylindrical space of the chamber body 132.

[0194] In this connection, the insertable cylinder 141b has a portion 141d between the proximal end and the distal end of the inserted portion of the insertable cylinder, the portion 141d having a diameter substantially equal to the diameter of the cylindrical space of the chamber body 132. The proximal end 141f of the inserted portion of the insertable cylinder 141b and the distal end 141e of the inserted portion of the insertable cylinder 141b both have a smaller diameter than the portion 141d between the proximal end and the distal end of the inserted portion of the insertable cylinder.

[0195] The actuation mechanism 140 further includes a distal sealing ring 147 coupled to the insertable cylinder 141b. The distal sealing ring 147 slides along the cylindrical inner wall of the chamber body 132 when the insertable cylinder 141b moves from the first direction to the second direction or from the second direction to the first direction.

[0196] The distal sealing ring 147 is joined to the distal end 141e of the inserted portion of the insertable cylinder. The distal sealing ring 147 further projects outwardly beyond the diameter of the portion 141d between the proximal and distal ends of the inserted portion of the insertable cylinder 141b. The distal sealing ring 147 is compressed by the inner wall of the chamber body 132 to have a diameter substantially the same as the diameter of the cylindrical space of the chamber body 132.

[0197] In this connection, the distal sealing ring 147 may be made of a material having an elastic force that can be deformed by an external force.

[0198] When an external force is applied to the pushed portion 141a of the actuation mechanism 140, the insertable cylinder 141b is displaced from the first position to the second position in the first direction. The displacement of the insertable cylinder 141b from the first position to the second position means movement of the cylinder 141b into the cylindrical space of the chamber body 132. At this time, the insertable cylinder 141b slides along the inner cylindrical wall in contact with the inner cylindrical wall of the chamber body 132.

[0199] The proximal sealing ring 145 coupled to the proximal end 141f of the inserted portion of the insertable cylinder, and the distal sealing ring 147 coupled to the distal end 141e of the inserted portion of the insertable cylinder moves along and on the inner cylindrical wall of the chamber body while contacting the inner cylindrical wall. The proximal sealing ring 145 and the distal sealing ring 147 are thereby compressed by the inner cylindrical wall of the chamber body 132. Thus, the proximal sealing ring 145 and the distal sealing ring 147 are sliding along the inner cylindrical wall of the chamber body 132 while pressing against the inner cylindrical wall of the chamber body 132.

[0200] At this time, a portion of the cylindrical space of the chamber body 132, which is located below the distal sealing ring 147, is sealed by the distal sealing ring 147. As a result, a pressure to discharge the cosmetic-fluid from the cylindrical space of the chamber body to the cosmetic-fluid outlet guide 131 rises. Thereby, the cosmetic-fluid flow into the cosmetic-fluid outlet guide 131 is effectively realized.

[0201] More specifically, the distal sealing ring 147 prevents the loss of cosmetic-fluid, which may otherwise occur when the fluid leaks through the fine gap between the outer face of the insertable cylinder 141b and the inner cylindrical wall of the chamber body 132. Thereby, the cosmetic-fluid outflow from within the cylindrical space of the chamber body to the cosmetic-fluid outlet guide 131 is effectively realized. This outflow is realized with a stronger pressure, compared to the case where the distal sealing ring 147 is absent.

[0202] In addition, the user must apply an external force to the pushed portion 141a sufficient to overcome the frictional force between the distal sealing ring 147 and the inner cylindrical wall of the chamber body 132. Therefore, as compared with the case where the distal sealing ring 147 is not provided, a stronger external force must be applied to the pushed portion 141a.

[0203] The actuation mechanism 140 may further include a step portion 141c formed between the pushed portion 141a and the insertable cylinder 141b and protruding outwardly out of the main body 110.

[0204] After the actuation mechanism 140 is inserted into the first opening 113, an outer housing 160 having a third opening 161 formed therein to a diameter corresponding to an outer diameter of the step portion 141c surrounds a portion of the elongate main body 110 having the first opening 113 defined therein. In this regard, the outer housing 160 may be coupled to the elongate main body 110 such that the first opening 113 and the third opening 161 communicate with each other. When the external force applied to the actuation mechanism 140 is released, the insertable cylinder 141b is supported by the outer housing 160, so that the actuation mechanism 140 may be prevented from escape out of the main body 110.

[0205] In an upper end of the step portion 141c, a protrusion-receiving hole h is formed in which a protrusion r from the pushed portion 141a is inserted. When the protrusion r from the pushed portion 141a is received in the protrusion-receiving hole h, the pushed portion 141a and the insertable cylinder 141b are engaged with each other.

[0206] In this connection, a size of a cross-sectional area of the pushed portion 141a is larger than a size of a cross-sectional area of the step portion 141c. As a result, a contact area of the pushed portion 141a with a part of the user's body is increased, so that the user can more easily apply the external force to the pushed portion 141a.

[0207] The fluid-communication chamber 130 is inserted into the elongate main body 110. The fluid-communication chamber 130 is located below the actuation mechanism 140 such that the pressurization of the cosmetic-fluid contained in the chamber 130 by the actuation mechanism 140 is facilitated. The cosmetic-fluid of the amount (volume) corresponding to the external force applied to the actuation mechanism 140 is discharged out of the main body 110 through the distal cosmetic-fluid outlet structure 171.

[0208] The cylindrical space within the chamber body of the fluid-communication chamber 130 is reduced by a first volume by the actuation mechanism 140 being displaced in the first direction by the applied external force, and thus the fluid amount corresponding to the first volume flows out through the cosmetic-fluid outlet guide 131 to the distal cosmetic-fluid outlet structure 171. To the contrary, when the applied external force is released, the actuation mechanism 140 is displaced in the second direction opposite to the first direction, such that the cylindrical space in the chamber body of the fluid-communication chamber 130 is expanded by the first volume. At this time, the cosmetic fluid stored in the elongate main body 110 flows into the cylindrical space in the chamber body to compensate for the expanded first volume. This operation principle will be described in detail with reference to FIG. 5 to FIG. 7.

[0209] A sealing cap 150 is inserted within the second end of the elongate main body 110 to seal the second end.

[0210] The distal cosmetic-fluid outlet structure 171 has an outlet hole 171a formed in its downstream region for discharging the cosmetic-fluid, and an inserted portion 171c formed in the upstream region thereof and inserted into a distal end of the cosmetic-fluid outlet guide 131.

[0211] The outlet hole 171a may be formed in an elliptical shape so that the outlet hole 171a may be closely adhered to the skin of the user. According to an embodiment of the present disclosure, a cosmetic brush (not shown) may be coupled to the outlet hole portion. As a result, the cosmetic fluid drained through the outlet hole may be absorbed into the user's skin via the soft brush. In this way, the user may use the cosmetic-fluid for skin beauty while feeling the touch of the soft brush.

[0212] An inner diameter of the distal end portion of the cosmetic-fluid outlet guide 131 is larger than an inner diameter of a middle extension portion of the cosmetic-fluid outlet guide 131. The inserted portion 171c of the distal cosmetic-fluid outlet structure 171 is inserted into the distal end of the cosmetic-fluid outlet guide 131.

[0213] According to one embodiment of the present disclosure, a second elastic member 173 is disposed between an outer peripheral surface of the inserted portion 171c of the distal cosmetic-fluid outlet structure 171 and an inner peripheral surface of the distal end portion of the cosmetic-fluid outlet guide 131. At a rear end of the second elastic member 173, an outlet-control ball 175 having a larger diameter than that of a middle extension portion of the cosmetic-fluid outlet guide 131 may be disposed.

[0214] In this connection, when an external force is applied to the actuation mechanism 140, the outlet-control ball 175 is subjected to a pressure generated by the cosmetic-fluid moving in the distal end direction of the cosmetic-fluid outlet guide 131 through the fluid-outlet hole 132b, and, thus, is moved in a third direction. When the pressure generated by the cosmetic-fluid is weakened, the outlet-control ball 175 is moved by the second elastic member 173 in a fourth direction opposite to the third direction. Thereby, the outlet-control ball 175 closes an inlet hole 131b formed in a boundary region between the distal end and the middle extension portion of the cosmetic-fluid outlet guide 131.

[0215] For reference, the first direction or the second direction is a direction perpendicular to the third direction or the fourth direction.

[0216] The cosmetic-fluid dispenser further includes a compressing member 190 disposed within the inner space of the elongate main body 110. The compressing member 190 divides the inner space of the main body 110 into a first inner sub-space S1 and a second inner sub-space S2. The first inner sub-space is formed between the compressing member 190 and the fluid-communication chamber 130, and the cosmetic-fluid is stored in the first inner sub-space. When the external force applied to the actuation mechanism 140 is released, a first volume of cosmetic-fluid from the cosmetic-fluid stored in the first inner sub-space S1 passes through the fluid-inlet hole 132a into the cylindrical space of the chamber body 132. At the same time, the compressing member 190 is displaced along the inner face of the elongate main body 110 such that the volume of the first inner sub-space is reduced by the first volume.

[0217] The second inner sub-space is formed between the compressing member 190 and the sealing cap 150. When the volume of the first inner sub-space is reduced by the first volume, the volume of the second inner sub-space is expanded by the first volume.

[0218] A detailed description of the compressing member 190 will be given when an operation mechanism of the cosmetic-fluid dispenser based on the absence or presence of the external force thereto will be described with reference to FIG. 5 to FIG. 7.

[0219] FIG. 5 and FIG. 6 are schematic views illustrating a state where an external force is applied to the actuation mechanism of the cosmetic-fluid dispenser according to an embodiment of the present disclosure. FIG. 7 is a schematic view illustrating a state in which the external force applied to the actuation mechanism of the cosmetic-fluid dispenser according to an embodiment of the present disclosure is released.

[0220] Referring to FIG. 5 and FIG. 6, after the cap 180 is removed, when a user who wishes to use the cosmetic-fluid dispenser applies an external force in a first direction onto the pushed portion 141a using a part (a finger) of his or her body, the insertable cylinder 141b is displaced from the first position to the second position along the first direction. In this connection, since the movement of the insertable cylinder 141b from the first position to the second position refers to the movement of the cylinder 141b into the cylindrical space in the chamber body 132, the volume of the cylindrical space of the chamber body 132 is reduced by the inserted portion of the insertable cylinder 141b.

[0221] In this connection, the volume of the cylindrical space of the chamber body is reduced by the first volume. In other words, a portion of the insertable cylinder 141b corresponding to the first volume is inserted into the cylindrical space in the chamber body. As the pushed portion 141a moves from the first position to the second position, the first elastic member 143 elastically deforms in a compressed manner.

[0222] In response to the displacement of the insertable cylinder 141b into the cylindrical space of the chamber body, the cosmetic-fluid contained within the cylindrical space of the chamber body is transferred to the distal cosmetic-fluid outlet structure 171 through the cosmetic-fluid outlet guide 131.

[0223] In this connection, a cosmetic-fluid outflow path from the cylindrical space of the chamber body may include an outflow path through the cosmetic-fluid outlet guide 131 and an outflow path through the fluid-inlet hole 132a. However, during movement of the insertable cylinder 141b from the first position to the second position, the fluid-inlet hole 132a is closed by the hole-opening/closing member 148. The outflow path through the fluid-inlet hole 132a may be deactivated. Thus, the cosmetic fluid in the cylindrical space of the chamber body may outflow only via the outflow path through the cosmetic-fluid outlet guide 131. Accordingly, the user may use the cosmetic-fluid discharged through the distal cosmetic-fluid outlet structure 171.

[0224] Closing of the fluid-inlet hole 132a by the hole-opening/closing member 148 is as described above.

[0225] As for the operation of the insertable cylinder 141b, when an external force is applied to the pushed portion 141a, the insertable cylinder 141b is displaced from the first position to the second position, while when the external force applied to the pushed portion 141a is released, the insertable cylinder 141b is displaced via the first elastic member 143 from the second position to the first position. When the insertable cylinder 141b is at the second position, the fluid-inlet hole 132a is closed, thereby restricting the movement of the cosmetic-fluid through the fluid-inlet hole 132a. When the insertable cylinder 141b is at the first position, the fluid-inlet hole 132a is opened, whereby the movement of the cosmetic-fluid through the fluid-inlet hole 132a is activated.

[0226] Due to the pressure created by the cosmetic-fluid moving from the cylindrical space of the chamber body 132 through the fluid-outlet hole 132b, the outlet-control ball 175 is moved in a direction far away from the elongate main body 110, that is, in the third direction. Accordingly, the cosmetic-fluid received in the intermediate extension portion of the cosmetic-fluid outlet guide 131 which has been blocked by the outlet-control ball 175 now passes through a gap between the outlet-control ball 175 and the inlet hole 131b into the distal cosmetic-fluid outlet structure 171. The cosmetic-fluid introduced into the distal cosmetic-fluid outlet structure 171 outflows through the outlet hole 171a.

[0227] As the cosmetic fluid contained in the intermediate extension portion of the cosmetic-fluid outlet guide 131 gradually passes through the gap between the outlet-control ball 175 and the inlet hole 131b, the pressure exerted on the distal cosmetic-fluid outlet structure 171 is weakened. In this connection, due to the elastic force of the second elastic member 173, the outlet-control ball 175 is moved in the fourth direction opposite to the third direction, thereby to close the inlet hole 131b. Consequently, the cosmetic-fluid contained within the fluid-communication chamber 123 is consumed by the amount thereof equal to the amount of the cosmetic-fluid introduced into the distal cosmetic-fluid outlet structure 171.

[0228] Referring to FIG. 7, when the external force applied to the pushed portion 141a is released, the first elastic member 143 elastically deformed in a compressed manner is elastically deformed in such a manner that it is expanded by its restoring force. Accordingly, the displacement of the pushed portion 141a from the second position to the first position is realized.

[0229] In this connection, the insertable cylinder 141b inserted in the cylindrical space of the chamber body 132 is displaced in the second direction from within the cylindrical space of the chamber body. As the insertable cylinder 141b is displaced in the second direction, an empty space of the first volume is created in the cylindrical space of the chamber body. In this regard, since the fluid-inlet hole 132a is opened during displacement of the insertable cylinder 141b in the second direction, the void volume of the first volume is filled with the cosmetic-fluid moved from the first inner sub-space S1 through the fluid-inlet hole 132a.

[0230] Specifically, the first opening 113 is kept airtight by the proximal sealing ring 145, thereby preventing air from flowing through the first opening 113. Accordingly, since there is no inflow of air into the cylindrical space of the chamber body 132, the empty space of the first volume is in a vacuum state. In this connection, the cosmetic-fluid stored in the first inner sub-space S1 of the elongate main body 110 is sucked through the fluid-inlet hole 132a into the empty portion of the cylindrical space of the chamber body at this vacuum state. Using this sucking phenomenon, a constant amount of cosmetic-fluid may be kept in the cylindrical space of the chamber body.

[0231] In this connection, since the cosmetic-fluid outlet guide 131 which may act as a cosmetic-fluid movement path on the other side of the chamber body 132 into the cylindrical space of the body 132, is blocked by the outlet-control ball 175, the cosmetic-fluid inflow may be realized only through the fluid-inlet hole 132a.

[0232] In order for the cosmetic fluid to move from the first inner sub-space S1 of the elongate main body 110 into the cylindrical space of the chamber body through the fluid-inlet hole 132a, only the cosmetic-fluid should be present in the first inner sub-space S1. Therefore, since the fluid of the first volume has been emitted from the first inner sub-space S1, the volume of the first inner sub-space S1 must be variable to remove air creation therein.

[0233] To this end, the cosmetic-fluid dispenser according to the present disclosure comprises the compressing member 190. The compressing member 190 may define the first inner sub-space S1 and prevent the inflow of air into the space S1.

[0234] The compressing member 190 may be displaced in a sliding manner along and on the inner face of the elongate main body 110. This displacement is based on the volume change of the space S1 due to the outflow of the cosmetic fluid from the first inner sub-space S1.

[0235] Specifically, since there is only the cosmetic-fluid in the first inner sub-space S1, the empty space in the space S1, which occurs in response to the outflow of the cosmetic-fluid, must be filled with air or an external substance. In this regard, the compressing member 190 prevents inflow of the external air or material into the first inner sub-space S1, so that the inner volume of the first inner sub-space S1 is reduced to remove the empty space, thereby to enable the cosmetic-fluid outflow therefrom.

[0236] The compressing member 190 divides the inner space of the elongate main body 110 into the first inner sub-space S1 and the second inner sub-space S2. When the external force applied to the actuation mechanism 140 is released so that the first volume of cosmetic-fluid from the cosmetic-fluid stored in the first inner sub-space S1 passes through the fluid-inlet hole 132a into the cylindrical space of the chamber body, the compressing member 190 is slidably moved along and one the inner face of the elongate main body 110 such that the volume of the first inner sub-space S1 is reduced by the first volume.

[0237] At the same time, the second inner sub-space S2 divided by the compressing member 190 is correspondingly expanded as the volume of the first inner sub-space S1 is reduced.

[0238] In this connection, the sealing cap 150 has an air-communication hole 152 defined therein, which allows air-communication between the second inner sub-space S2 and an exterior space of the cosmetic-fluid dispenser 1. The air-communication hole 152 serves as a channel through which, when the second inner sub-space S2 is expanded by the first volume, the outside air of the same volume as the first volume flows into the second inner sub-space S2.

[0239] On the other hand, the cosmetic-fluid of an amount corresponding to the first volume from the cosmetic-fluid stored in the elongate main body 110 is transferred into the cylindrical space of the chamber body. Thus, the cosmetic fluid contained within the cylindrical space of the chamber body 132 is in a standby state ready to receive the external force from the user again.

[0240] After using the cosmetic-fluid exiting through the distal cosmetic-fluid outlet structure 171, when the user determines that the cosmetic-fluid is further needed, the user may re-apply an external force onto the pushed portion 141a of the actuation mechanism 140, which has moved from the second position to the first position. In this way, the above-described series of processes may be repeated.

[0241] According to the embodiment described above, the chamber body 132 is described as being removably inserted into the elongate main body 110. However, the present disclosure is not limited thereto. In one embodiment, the chamber body 132 may be integral with the elongate main body 110.

[0242] FIG. 8 is an exploded perspective view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0243] Referring to FIG. 8, the cosmetic-fluid dispenser according to this embodiment of the present disclosure has the same configuration and effect as those of the cosmetic-fluid dispenser as shown in FIG. 1 to FIG. 7 except for a removable cosmetic-fluid storage unit 290. Thus, hereinafter, only the removable cosmetic-fluid storage unit 290 will be described.

[0244] The removable cosmetic-fluid storage unit 290 may accommodate therein a compressing member 293 with the same configuration as that as described above, and may be removably inserted into the elongate main body 110.

[0245] Specifically, the removable cosmetic-fluid storage unit 290 includes a removable elongate body 291 having an inner space therein, and removably inserted into the inner space of the elongate main body 110; the compressing member 293 dividing the inner space of the removable elongate body 291 into the third inner sub-space S3 and the fourth inner sub-space S4; and a sealing cap 295 to seal the inner space of the removable elongate body 291 and the second end of the elongate main body 110. The cosmetic-fluid is stored in the third inner sub-space S3 formed between the compressing member 293 and the fluid-communication chamber 130. When the external force applied to the actuation mechanism 140 is released so that the cosmetic-fluid of the same volume as the first-volume from the cosmetic-fluid stored in the third inner sub-space S3 passes through the fluid-inlet hole 132a into the cylindrical space of the chamber body 132, the compressing member 293 is displaced in a sliding manner along and on the inner face of the removable elongate body 291 so that the volume of the third inner sub-space S3 is reduced by the first volume.

[0246] In this connection, the removable cosmetic-fluid storage unit 290 may be separately manufactured and then removably inserted into the elongate main body 110. Thus, when the removable cosmetic-fluid storage unit 290 is separated from the elongate main body 110, the cosmetic-fluid may be refilled into the removable cosmetic-fluid storage unit 290 which in turn may be inserted into the elongate main body 110. This allows the cosmetic-fluid dispenser to be refilled with the cosmetic-fluid.

[0247] To this end, the removable cosmetic-fluid storage unit 290 may be releasably coupled to the elongate main body 110 by threaded-type engagement. In this connection, the sealing cap 295 has a coin-insertion hole 297 defined therein, into which a portion of a common coin may be inserted. Thereby, when the coin is inserted into the coin-insertion hole 297 and then the user rotates the coin, the threaded-type engagement may be activated or deactivated.

[0248] An outer sealing ring 291a is disposed on the outer surface of the removable elongate body 291 to improve the bonding force with the inner surface of the elongate main body 110 when the removable elongate body 291 is inserted into the inner space of the elongate main body 110. The outer sealing ring 291a is made of a rubber material having elasticity. When the removable cosmetic-fluid storage unit 290 is inserted into the elongate main body 110, the outer sealing ring 291a is deformed in contact with the inner surface of the elongate main body 110, thereby maintaining the airtightness between the removable elongate body 291 and the elongate main body 110 and improving the bonding force therebetween.

[0249] In this connection, the sealing cap 295 has an air-communication hole (not shown) defined therein, which allows air-communication between the second inner sub-space S4 and an exterior space of the cosmetic-fluid dispenser. The air-communication hole serves as a channel through which, when the second inner sub-space S4 is expanded by the first volume, the outside air of the same volume as the first volume flows into the second inner sub-space S4.

[0250] FIG. 9 and FIG. 10 are schematic views for illustrating a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0251] Referring to FIG. 9 and FIG. 10, the cosmetic-fluid dispenser according to this embodiment of the present disclosure has the same configuration and effect as those of the cosmetic-fluid dispenser as shown in FIG. 1 to FIG. 7, except for a removable cosmetic-fluid storage unit 390. Thus, hereinafter, only the removable cosmetic-fluid storage unit 390 will be described.

[0252] In FIG. 9 and FIG. 10, a removable elongate body 391 and a sealing cap 395 are separately shown for the sake of convenience of illustration. However, actually, the removable elongate body 391 and the sealing cap 395 are integrally formed.

[0253] The removable cosmetic-fluid storage unit 390 is inserted into the inner space of the elongate main body 110. The removable cosmetic-fluid storage unit 390 may be coupled to the elongate main body 110 in a press-fit manner rather than in a threaded type engagement manner.

[0254] To this end, the removable cosmetic-fluid storage unit 390 has at least one outer protrusion ring 398 which protrudes from and extends along an outer circumferential surface thereof. The elongate main body 110 has at least one inner groove ring, each having a position and shape corresponding to those of each outer protrusion ring 398.

[0255] The coupling between the removable cosmetic-fluid storage unit 390 and the elongate main body 110 may be realized by engagement between the outer protrusion ring 398 and the inner groove ring (not shown).

[0256] The sealing cap 395 includes a removing-force receiving portion 396 protruding from an outer end face of the cap 395 and having a passing-through hole 396a defined therein. The user removes the removable cosmetic-fluid storage unit 395 from the elongate main body 110 by inserting a ring-shaped remover (not shown) into the passing-through hole 396a and pulling away the remover.

[0257] Specifically, the ring-shaped remover has a dimension corresponding to a dimension of the passing-through hole 396a. The ring-shaped remover may be used to separate the removable cosmetic-fluid storage unit 390 from the elongate main body 110.

[0258] To remove the removable cosmetic-fluid storage unit 390 from the elongate main body 110, the user inserts the ring-shaped remover into the passing-through hole 396a and then pull the ring-shaped remover in a direction such that the removable cosmetic-fluid storage unit 390 moves away from the main body 110. This removes the combination of the removable elongate body 391 and the sealing cap 395 from the elongate main body 110.

[0259] The sealing cap 395 may have an air-communication hole 395a defined therein for performing the same function as the air-communication hole 152 described above.

[0260] FIG. 11 and FIG. 12 are perspective views illustrating a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0261] Referring to FIG. 11 and FIG. 12, the cosmetic-fluid dispenser according to this embodiment of the present disclosure includes an elongate main body 1110 having a main inner space storing a cosmetic-fluid therein, and a first opening 1113 defined therein, through which the actuation mechanism 1140 passes; a fluid-communication chamber 1130 disposed in the inner space of the elongate main body 1110, wherein a distal cosmetic-fluid outlet structure 1171 is fluid-communicated with the fluid-communication chamber 1130, through which the cosmetic-fluid outflows; and a cap 1180 coupled to a first end 1115 of the elongate main body 1110.

[0262] In this connection, the cosmetic-fluid stored in the inner space of the elongate main body 1110 may be of various types of cosmetic-fluids having a viscosity sufficient to flow through the distal cosmetic-fluid outlet structure 1171.

[0263] In this embodiment, when the cap 1180 is separated from the elongate main body 1110, the distal cosmetic-fluid outlet structure 1171 is exposed. When the cap 1180 is coupled with the elongate main body 1110, the distal cosmetic-fluid outlet structure 1171 is hidden within the cap 1180. After the cap 1180 is separated from the elongate main body 1110, when an external force is applied to the actuation mechanism 1140, a certain amount of cosmetic-fluid flows out through the distal cosmetic-fluid outlet structure 1171.

[0264] FIG. 13 is an exploded perspective view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure. FIG. 14 is a cross-sectional view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0265] Referring to FIG. 13 and FIG. 14, the cosmetic-fluid dispenser according to this embodiment of the present disclosure includes an actuation mechanism 1140 configured to allow selective dispensing of a cosmetic-fluid; a elongate main body 1110 having opposite first and second end portions, and a first opening 1113 defined in a side portion thereof, wherein the elongate main body contains therein a cosmetic-fluid, wherein the actuation mechanism 1140 passes through the first opening 1113; a fluid-communication chamber 1130 disposed in the first end portion of the elongate main body 1110, wherein the fluid-communication chamber 1130 fluid-communicates with the elongate main body 1110, wherein the fluid-communication chamber 1130 is configured to cooperate with the actuation mechanism 1140 to dispense a cosmetic-fluid out of the elongate main body; a distal cosmetic-fluid outlet structure 1171 fluid-communicating with the fluid-communication chamber 1130, wherein the distal cosmetic-fluid outlet structure 1171 is disposed out of the main body 1110; and a cap 1180 removably coupled to the elongate main body 1110 at the first end portion 1115.

[0266] Referring to FIG. 13 and FIG. 14, the elongate main body 1110 is hollow and having a fluid receiving space formed therein, in which the cosmetic-fluid may be stored. The elongate main body 1110 may be made of a transparent material or a translucent material so that the cosmetic-fluid contained therein may be visible to the outside. Such materials may include glass or synthetic resin materials. In the side portion of the elongate main body 1110, the first opening 1113 is defined, through which the actuation mechanism 1140 passes.

[0267] The fluid-communication chamber 1130 is disposed within the elongate main body 1110. The fluid-communication chamber 1130 includes a chamber body 1132 having a cylindrical space defined therein, and a cosmetic-fluid outlet guide 1131 in fluid-communication with the chamber body 1132. The cosmetic-fluid outlet guide 1131 is in fluid-communication with the distal cosmetic-fluid outlet structure 1171. The chamber body 1132 has a fluid-inlet hole 1132a formed in one of lateral side walls thereof opposite to the guide 1131, a fluid-outlet hole 1132b fluid-communicating with the cosmetic-fluid outlet guide 1131, and a second opening 1132c position-corresponding to the first opening 1113. The cosmetic fluid stored in the main body 1110 flows into the cylindrical space in the chamber body 1132 through the fluid-inlet hole 1132a.

[0268] The actuation mechanism 1140 includes a pushed portion 1141a protruding out of the elongate main body 1110 to receive an external force, an insertable cylinder 1141b connected to the pushed portion 1141a and passing through the first and second openings 1113 and 1132c, and a first elastic member 1143 disposed on a bottom of the insertable cylinder 1141b and within the cylindrical space in the chamber body 1132. The first elastic member 1143 is elastically deformed via the insertable cylinder 1141b when an external force is applied to the pushed portion 1141a. Then, the first elastic member 1143 is restored by an elastic restoring force when the external force is released, thereby to allow the insertable cylinder 1141b to return to its home position.

[0269] The actuation mechanism 1140 includes a proximal sealing ring 1145 coupled to the insertable cylinder 1141b. The proximal sealing ring 1145 serves to prevent the escape of cosmetic fluid out of the cylindrical space of the chamber body when the insertable cylinder 1141b moves from the first direction to the second direction or from the second direction to the first direction.

[0270] The proximal sealing ring 1145 prevents air flow in and out of the cylindrical space of the chamber body through the first opening 1113. The cylindrical space in the chamber body 1132 is kept airtight by the proximal sealing ring 1145 to prevent the cosmetic fluid in the cylindrical space in the chamber body from flowing out of the space through the first opening 113. This prevents cosmetic-fluid leakage through the first opening 1113 in the process of repeatedly applying an external force to the actuation mechanism 1140 in order that the user uses the cosmetic-fluid. Thus, the cosmetic-fluid is not deposited on a part of the user's body. Further, this prevents the cosmetic-fluid from getting on the outer surface of the cosmetic-fluid dispenser.

[0271] When moving the actuation mechanism 1140 from the first direction to the second direction or from the second direction to the first direction, the proximal sealing ring 1145 moves along the cylindrical inner side wall of the chamber body 1132 while being coupled to the insertable cylinder 1141b. This prevents leakage of the cosmetic-fluid received within the cylindrical space through the first opening 1113.

[0272] Specifically, the proximal sealing ring 1145 is engaged with the proximal end 1141f of the inserted portion of the insertable cylinder 1141b. The proximal sealing ring 1145 projects further outward than the outer diameter of the portion 1141d between the proximal end and the distal end of the inserted portion of the insertable cylinder 1141b. Thereby, the proximal sealing ring 1145 is compressed by the cylindrical inner wall of the chamber body 1132 to have a size corresponding to the diameter of the cylindrical space of the chamber body 1132.

[0273] In this connection, the insertable cylinder 1141b has a portion 1141d between the proximal end and the distal end of the inserted portion of the insertable cylinder, the portion 1141d having a diameter substantially equal to the diameter of the cylindrical space of the chamber body 1132. The proximal end 1141f of the inserted portion of the insertable cylinder 1141b and the distal end 1141e of the inserted portion of the insertable cylinder 1141b both have a smaller diameter than the portion 1141d between the proximal end and the distal end of the inserted portion of the insertable cylinder.

[0274] The actuation mechanism 1140 further includes a distal sealing ring 1147 coupled to the insertable cylinder 1141b. The distal sealing ring 1147 slides along the cylindrical inner wall of the chamber body 1132 when the insertable cylinder 1141b moves from the first direction to the second direction or from the second direction to the first direction.

[0275] The distal sealing ring 1147 is joined to the distal end 1141e of the inserted portion of the insertable cylinder. The distal sealing ring 1147 further projects outwardly beyond the diameter of the portion 1141d between the proximal and distal ends of the inserted portion of the insertable cylinder 1141b. The distal sealing ring 1147 is compressed by the inner wall of the chamber body 1132 to have a diameter substantially the same as the diameter of the cylindrical space of the chamber body 1132.

[0276] In this connection, the distal sealing ring 1147 may be made of a material having an elastic force that can be deformed by an external force.

[0277] When an external force is applied to the pushed portion 1141a of the actuation mechanism 1140, the insertable cylinder 1141b is displaced from the first position to the second position in the first direction. The displacement of the insertable cylinder 1141b from the first position to the second position means movement of the cylinder 1141b into the cylindrical space of the chamber body 1132. At this time, the insertable cylinder 1141b slides along the inner cylindrical wall in contact with the inner cylindrical wall of the chamber body 1132.

[0278] The proximal sealing ring 1145 coupled to the proximal end 1141f of the inserted portion of the insertable cylinder, and the distal sealing ring 1147 coupled to the distal end 1141e of the inserted portion of the insertable cylinder moves along and on the inner cylindrical wall of the chamber body while contacting the inner cylindrical wall. The proximal sealing ring 1145 and the distal sealing ring 1147 are thereby compressed by the inner cylindrical wall of the chamber body 1132. Thus, the proximal sealing ring 1145 and the distal sealing ring 1147 are sliding along the inner cylindrical wall of the chamber body 1132 while pressing against the inner cylindrical wall of the chamber body 1132.

[0279] At this time, a portion of the cylindrical space of the chamber body 1132, which is located below the distal sealing ring 1147, is sealed by the distal sealing ring 1147. As a result, a pressure to discharge the cosmetic-fluid from the cylindrical space of the chamber body to the cosmetic-fluid outlet guide 1131 rises. Thereby, the cosmetic-fluid flow into the cosmetic-fluid outlet guide 1131 is effectively realized.

[0280] More specifically, the distal sealing ring 1147 prevents the loss of cosmetic-fluid, which may otherwise occur when the fluid leaks through the fine gap between the outer face of the insertable cylinder 1141b and the inner cylindrical wall of the chamber body 1132. Thereby, the cosmetic-fluid outflow from within the cylindrical space of the chamber body to the cosmetic-fluid outlet guide 1131 is effectively realized. This outflow is realized with a stronger pressure, compared to the case where the distal sealing ring 1147 is absent.

[0281] In addition, the user must apply an external force to the pushed portion 1141a sufficient to overcome the frictional force between the distal sealing ring 1147 and the inner cylindrical wall of the chamber body 1132. Therefore, as compared with the case where the distal sealing ring 1147 is not provided, a stronger external force must be applied to the pushed portion 141a.

[0282] The actuation mechanism 1140 may further include a step portion 1141c formed between the pushed portion 1141a and the insertable cylinder 1141b and protruding outwardly out of the main body 110.

[0283] After the actuation mechanism 1140 is inserted into the first opening 1113, an outer housing 1160 having a third opening 1161 formed therein to a diameter corresponding to an outer diameter of the step portion 1141c surrounds a portion of the elongate main body 1110 having the first opening 1113 defined therein. In this regard, the outer housing 1160 may be coupled to the elongate main body 1110 such that the first opening 1113 and the third opening 1161 communicate with each other. When the external force applied to the actuation mechanism 1140 is released, the insertable cylinder 1141b is supported by the outer housing 1160, so that the actuation mechanism 1140 may be prevented from escape out of the main body 1110.

[0284] In an upper end of the step portion 1141c, a protrusion-receiving hole h is formed in which a protrusion r from the pushed portion 1141a is inserted. When the protrusion r from the pushed portion 1141a is received in the protrusion-receiving hole h, the pushed portion 1141a and the insertable cylinder 1141b are engaged with each other.

[0285] In this connection, a size of a cross-sectional area of the pushed portion 1141a is larger than a size of a cross-sectional area of the step portion 1141c. As a result, a contact area of the pushed portion 1141a with a part of the user's body is increased, so that the user can more easily apply the external force to the pushed portion 1141a.

[0286] The fluid-communication chamber 1130 is inserted into the elongate main body 1110. The fluid-communication chamber 1130 is located below the actuation mechanism 1140 such that the pressurization of the cosmetic-fluid contained in the chamber 1130 by the actuation mechanism 1140 is facilitated. The cosmetic-fluid of the amount (volume) corresponding to the external force applied to the actuation mechanism 1140 is discharged out of the main body 1110 through the distal cosmetic-fluid outlet structure 1171.

[0287] The cylindrical space within the chamber body of the fluid-communication chamber 1130 is reduced by a first volume by the actuation mechanism 1140 being displaced in the first direction by the applied external force, and thus the fluid amount corresponding to the first volume flows out through the cosmetic-fluid outlet guide 131 to the distal cosmetic-fluid outlet structure 1171. To the contrary, when the applied external force is released, the actuation mechanism 1140 is displaced in the second direction opposite to the first direction, such that the cylindrical space in the chamber body of the fluid-communication chamber 1130 is expanded by the first volume. At this time, the cosmetic fluid stored in the elongate main body 1110 flows into the cylindrical space in the chamber body to compensate for the expanded first volume. This operation principle will be described in detail with reference to FIG. 15 to FIG. 17.

[0288] A sealing cap 1150 is inserted within the second end of the elongate main body 1110 to seal the second end.

[0289] The distal cosmetic-fluid outlet structure 1171 has an outlet hole 1171a formed in its downstream region for discharging the cosmetic-fluid, and an inserted portion 1171b formed in the upstream region thereof and inserted into a distal end of the cosmetic-fluid outlet guide 1131.

[0290] The outlet hole 1171a may be formed in an elliptical shape so that the outlet hole 1171a may be closely adhered to the skin of the user. According to an embodiment of the present disclosure, a cosmetic brush (not shown) may be coupled to the outlet hole portion. As a result, the cosmetic fluid drained through the outlet hole may be absorbed into the user's skin via the soft brush. In this way, the user may use the cosmetic-fluid for skin beauty while feeling the touch of the soft brush.

[0291] When the inserted portion 1171b is inserted into the distal end of the cosmetic-fluid outlet guide 1131, a spacing Q is defined between an outer peripheral surface of the inserted portion 1171b and an inner peripheral surface of the cosmetic-fluid outlet guide 1131.

[0292] The inserted portion 1171b has a first inserted sub-portion 1171c, a second inserted sub-portion 1171d, and a hole-opening/closing member 1173.

[0293] The first inserted sub-portion 1171c defines therein a first fluid-communication channel V1 in fluid-communication with the outlet hole 1171a. The first inserted sub-portion 1171c has a first fluid-communication hole H1 defined therein to allow communication between the first fluid-communication channel V1 and the spacing Q.

[0294] The second inserted sub-portion 1171d defines therein a second fluid-communication channel V2 in fluid-communication with the fluid-outlet hole 1132b. The second inserted sub-portion 1171d has a second fluid-communication hole H2 that allows fluid-communication between the second fluid-communication channel V2 and the spacing Q.

[0295] The hole-opening/closing member 1173 is constructed to surround the second fluid-communication hole H2. The hole-opening/closing member 1173 controls the flow of cosmetic-fluid through the second fluid-communication hole H2.

[0296] Specifically, when an external force is applied to the actuation mechanism 1140, the hole-opening/closing member 1173 is elastically deformed via a pressure generated by the cosmetic-fluid moving in the distal end direction of the cosmetic-fluid outlet guide 1131 through the fluid-outlet hole 1132b, thereby to open the second fluid-communication hole H2. When the external force applied to the actuation mechanism 1140 is released such that the pressure is weakened, the hole-opening/closing member 1173 is restored by an elastic restoring force, thereby to close the second fluid-communication hole H2.

[0297] The hole-opening/closing member 1173 may be implemented as a kind of a thin rubber film which surrounds the outer circumference of the second inserted sub-portion 1171d and controls the opening and closing of the second fluid-communication hole H2.

[0298] The cosmetic-fluid dispenser further includes a compressing member 1190 disposed within the inner space of the elongate main body 1110. The compressing member 1190 divides the inner space of the main body 1110 into a first inner sub-space S1 and a second inner sub-space S2. The first inner sub-space is formed between the compressing member 1190 and the fluid-communication chamber 1130, and the cosmetic-fluid is stored in the first inner sub-space. When the external force applied to the actuation mechanism 1140 is released, a first volume of cosmetic-fluid from the cosmetic-fluid stored in the first inner sub-space S1 passes through the fluid-inlet hole 1132a into the cylindrical space of the chamber body 1132. At the same time, the compressing member 1190 is displaced along the inner face of the elongate main body 1110 such that the volume of the first inner sub-space is reduced by the first volume.

[0299] The second inner sub-space is formed between the compressing member 1190 and the sealing cap 1150. When the volume of the first inner sub-space is reduced by the first volume, the volume of the second inner sub-space is expanded by the first volume.

[0300] A detailed description of the compressing member 1190 will be given when an operation mechanism of the cosmetic-fluid dispenser based on the absence or presence of the external force thereto will be described with reference to FIG. 15 to FIG. 17.

[0301] FIG. 15 and FIG. 16 are schematic views illustrating a state where an external force is applied to the actuation mechanism of the cosmetic-fluid dispenser according to an embodiment of the present disclosure. FIG. 17 is a schematic view illustrating a state in which the external force applied to the actuation mechanism of the cosmetic-fluid dispenser according to an embodiment of the present disclosure is released.

[0302] Referring to FIG. 15 and FIG. 16, after the cap 1180 is removed, when a user who wishes to use the cosmetic-fluid dispenser applies an external force in a first direction onto the pushed portion 1141a using a part (a finger) of his or her body, the insertable cylinder 1141b is displaced from the first position to the second position along the first direction. In this connection, since the movement of the insertable cylinder 1141b from the first position to the second position refers to the movement of the cylinder 1141b into the cylindrical space in the chamber body 1132, the volume of the cylindrical space of the chamber body 1132 is reduced by the inserted portion of the insertable cylinder 1141b.

[0303] In this connection, the volume of the cylindrical space of the chamber body is reduced by the first volume. In other words, a portion of the insertable cylinder 1141b corresponding to the first volume is inserted into the cylindrical space in the chamber body. As the pushed portion 1141a moves from the first position to the second position, the first elastic member 143 elastically deforms in a compressed manner.

[0304] In response to the displacement of the insertable cylinder 1141b into the cylindrical space of the chamber body, the cosmetic-fluid contained within the cylindrical space of the chamber body is transferred to the distal cosmetic-fluid outlet structure 1171 through the cosmetic-fluid outlet guide 1131.

[0305] In this connection, a cosmetic-fluid outflow path from the cylindrical space of the chamber body may include an outflow path through the cosmetic-fluid outlet guide 1131 and an outflow path through the fluid-inlet hole 1132a. However, during movement of the insertable cylinder 1141b from the first position to the second position, the fluid-inlet hole 1132a is closed by the insertable cylinder. The outflow path through the fluid-inlet hole 1132a may be deactivated. Thus, the cosmetic fluid in the cylindrical space of the chamber body may outflow only via the outflow path through the cosmetic-fluid outlet guide 1131. Accordingly, the user may use the cosmetic-fluid discharged through the distal cosmetic-fluid outlet structure 1171.

[0306] When an external force is applied to the pushed portion 1141a, the insertable cylinder 1141b is displaced from the first position to the second position. At this time, the insertable cylinder 1141b slides along and on the inner side wall face of the chamber body 1131. Thus, the insertable cylinder 1141b blocks the fluid-inlet hole 1132a defined in the side wall of the chamber body 1132, thereby to close the fluid-inlet hole 1132a defined in the side wall of the chamber body 1132, thereby restricting the movement of the cosmetic-fluid through the fluid-inlet hole 1132a.

[0307] As for the operation of the insertable cylinder 1141b, when an external force is applied to the pushed portion 1141a, the insertable cylinder 1141b is displaced from the first position to the second position, while when the external force applied to the pushed portion 1141a is released, the insertable cylinder 1141b is displaced via the first elastic member 143 from the second position to the first position. When the insertable cylinder 1141b is at the second position, the insertable cylinder 1141b contacts the side wall of the chamber body 1132 to close the fluid-inlet hole 1132a defined in the side wall of the chamber body 1132, thereby restricting the movement of the cosmetic-fluid through the fluid-inlet hole 1132a. When the insertable cylinder 1141b is at the first position, and thus does not block the fluid-inlet hole 1132, thereby to open the fluid-inlet hole 1132, whereby the movement of the cosmetic-fluid through the fluid-inlet hole 1132a is activated.

[0308] The hole-opening/closing member 1173 opens the second fluid-communication hole H2 via pressure generated from the cosmetic-fluid moving through the fluid-outlet hole 1132b from within the cylindrical space of the chamber body 1132. Thus, the cosmetic fluid contained in the second fluid-communication channel V2, which could not escape out of the channel V2 through the second fluid-communication hole H2, now passes through the second fluid-communication hole H2, the spacing Q, the first fluid-communication hole H1 and the first fluid-communication channel V1 in this order. In this way, the fluid may be discharged out of the outlet hole 1171a.

[0309] As the cosmetic fluid contained in the second fluid-communication channel V2 flows out through the second fluid-communication hole H2, the pressure applied to the hole-opening/closing member 1173 weakens. As a result, the hole-opening/closing member 1173 is resiliently restored by elastic restoring force, thereby to close the second fluid-communication hole H2. In this connection, the cosmetic fluid contained in the fluid-communication chamber 1132 is consumed by an amount of the cosmetic-fluid exiting through the outlet hole 1171a.

[0310] Referring to FIG. 17, when the external force applied to the pushed portion 1141a is released, the first elastic member 1143 elastically deformed in a compressed manner is elastically deformed in such a manner that it is expanded by its restoring force. Accordingly, the displacement of the pushed portion 1141a from the second position to the first position is realized.

[0311] In this connection, the insertable cylinder 1141b inserted in the cylindrical space of the chamber body 1132 is displaced in the second direction from within the cylindrical space of the chamber body. As the insertable cylinder 1141b is displaced in the second direction, an empty space of the first volume is created in the cylindrical space of the chamber body. In this regard, since the fluid-inlet hole 1132a is opened during displacement of the insertable cylinder 1141b in the second direction, the void volume of the first volume is filled with the cosmetic-fluid moved from the first inner sub-space S1 through the fluid-inlet hole 1132a.

[0312] Specifically, the first opening 1113 is kept airtight by the proximal sealing ring 1145, thereby preventing air from flowing through the first opening 1113. Accordingly, since there is no inflow of air into the cylindrical space of the chamber body 1132, the empty space of the first volume is at a vacuum state. In this connection, the cosmetic-fluid stored in the first inner sub-space S1 of the elongate main body 1110 is sucked through the fluid-inlet hole 1132a into the empty portion of the cylindrical space of the chamber body at this vacuum state. Using this sucking phenomenon, a constant amount of cosmetic-fluid may be kept in the cylindrical space of the chamber body.

[0313] In this connection, since the cosmetic-fluid outlet guide 1131 which may act as a cosmetic-fluid movement path on the other side of the chamber body 1132 into the cylindrical space of the body 1132, is blocked by the opening/closing member 1173, the cosmetic-fluid inflow may be realized only through the fluid-inlet hole 1132a.

[0314] In order for the cosmetic fluid to move from the first inner sub-space S1 of the elongate main body 1110 into the cylindrical space of the chamber body through the fluid-inlet hole 1132a, only the cosmetic-fluid should be present in the first inner sub-space S1. Therefore, since the fluid of the first volume has been emitted from the first inner sub-space S1, the volume of the first inner sub-space S1 must be variable to remove air creation therein.

[0315] To this end, the cosmetic-fluid dispenser according to the present disclosure comprises the compressing member 1190. The compressing member 1190 may define the first inner sub-space S1 and prevent the inflow of air into the space S1.

[0316] The compressing member 1190 may be displaced in a sliding manner along and on the inner face of the elongate main body 1110. This displacement is based on the volume change of the space S1 due to the outflow of the cosmetic fluid from the first inner sub-space S1.

[0317] Specifically, since there is only the cosmetic-fluid in the first inner sub-space S1, the empty space in the space S1, which occurs in response to the outflow of the cosmetic-fluid, must be filled with air or an external substance. In this regard, the compressing member 1190 prevents inflow of the external air or material into the first inner sub-space S1, so that the inner volume of the first inner sub-space S1 is reduced to remove the empty space, thereby to enable the cosmetic-fluid outflow therefrom.

[0318] The compressing member 1190 divides the inner space of the elongate main body 1110 into the first inner sub-space S1 and the second inner sub-space S2. When the external force applied to the actuation mechanism 1140 is released so that the first volume of cosmetic-fluid from the cosmetic-fluid stored in the first inner sub-space S1 passes through the fluid-inlet hole 1132a into the cylindrical space of the chamber body, the compressing member 1190 is slidably moved along and one the inner face of the elongate main body 1110 such that the volume of the first inner sub-space S1 is reduced by the first volume.

[0319] At the same time, the second inner sub-space S2 divided by the compressing member 1190 is correspondingly expanded as the volume of the first inner sub-space S1 is reduced.

[0320] In this connection, the sealing cap 1150 has an air-communication hole 1152 defined therein, which allows air-communication between the second inner sub-space S2 and an exterior space of the cosmetic-fluid dispenser 1. The air-communication hole 1152 serves as a channel through which, when the second inner sub-space S2 is expanded by the first volume, the outside air of the same volume as the first volume flows into the second inner sub-space S2.

[0321] On the other hand, the cosmetic-fluid of an amount corresponding to the first volume from the cosmetic-fluid stored in the elongate main body 1110 is transferred into the cylindrical space of the chamber body. Thus, the cosmetic fluid contained within the cylindrical space of the chamber body 1132 is in a standby state ready to receive the external force from the user again.

[0322] After using the cosmetic-fluid exiting through the distal cosmetic-fluid outlet structure 1171, when the user determines that the cosmetic-fluid is further needed, the user may re-apply an external force onto the pushed portion 1141a of the actuation mechanism 1140, which has moved from the second position to the first position. In this way, the above-described series of processes may be repeated.

[0323] According to the embodiment described above, the chamber body 1132 is described as being removably inserted into the elongate main body 1110. However, the present disclosure is not limited thereto. In one embodiment, the chamber body 1132 may be integral with the elongate main body 1110.

[0324] FIG. 18 is an exploded perspective view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0325] Referring to FIG. 18, the cosmetic-fluid dispenser according to this embodiment of the present disclosure has the same configuration and effect as those of the cosmetic-fluid dispenser as shown in FIG. 13 to FIG. 17 except for a removable cosmetic-fluid storage unit 1290. Thus, hereinafter, only the removable cosmetic-fluid storage unit 1290 will be described.

[0326] The removable cosmetic-fluid storage unit 1290 may accommodate therein a compressing member 1293 with the same configuration as that as described above, and may be removably inserted into the elongate main body 1110.

[0327] Specifically, the removable cosmetic-fluid storage unit 1290 includes a removable elongate body 1291 having an inner space therein, and removably inserted into the inner space of the elongate main body 1110; the compressing member 1293 dividing the inner space of the removable elongate body 1291 into the third inner sub-space S3 and the fourth inner sub-space S4; and a sealing cap 1295 to seal the inner space of the removable elongate body 1291 and the second end of the elongate main body 1110. The cosmetic-fluid is stored in the third inner sub-space S3 formed between the compressing member 1293 and the fluid-communication chamber 1130. When the external force applied to the actuation mechanism 1140 is released so that the cosmetic-fluid of the same volume as the first-volume from the cosmetic-fluid stored in the third inner sub-space S3 passes through the fluid-inlet hole 1132a into the cylindrical space of the chamber body 1132, the compressing member 1293 is displaced in a sliding manner along and on the inner face of the removable elongate body 1291 so that the volume of the third inner sub-space S3 is reduced by the first volume.

[0328] In this connection, the removable cosmetic-fluid storage unit 1290 may be separately manufactured and then removably inserted into the elongate main body 1110. Thus, when the removable cosmetic-fluid storage unit 1290 is separated from the elongate main body 1110, the cosmetic-fluid may be refilled into the removable cosmetic-fluid storage unit 1290 which in turn may be inserted into the elongate main body 1110. This allows the cosmetic-fluid dispenser to be refilled with the cosmetic-fluid.

[0329] To this end, the removable cosmetic-fluid storage unit 1290 may be releasably coupled to the elongate main body 1110 by threaded-type engagement. In this connection, the sealing cap 1295 has a coin-insertion hole 1297 defined therein, into which a portion of a common coin may be inserted. Thereby, when the coin is inserted into the coin-insertion hole 1297 and then the user rotates the coin, the threaded-type engagement may be activated or deactivated.

[0330] An outer sealing ring 1291a is disposed on the outer surface of the removable elongate body 1291 to improve the bonding force with the inner surface of the elongate main body 1110 when the removable elongate body 1291 is inserted into the inner space of the elongate main body 1110. The outer sealing ring 1291a is made of a rubber material having elasticity. When the removable cosmetic-fluid storage unit 1290 is inserted into the elongate main body 1110, the outer sealing ring 1291a is deformed in contact with the inner surface of the elongate main body 1110, thereby maintaining the airtightness between the removable elongate body 1291 and the elongate main body 1110 and improving the bonding force therebetween.

[0331] FIG. 19 and FIG. 20 are schematic views for illustrating a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0332] Referring to FIG. 19 and FIG. 20, the cosmetic-fluid dispenser according to this embodiment of the present disclosure has the same configuration and effect as those of the cosmetic-fluid dispenser as shown in FIG. 13 to FIG. 17, except for a removable cosmetic-fluid storage unit 1390. Hereinafter, thus, only the removable cosmetic-fluid storage unit 1390 will be described.

[0333] In FIG. 19 and FIG. 20, a removable elongate body 1391 and a sealing cap 1395 are separately shown for the sake of convenience of illustration. However, actually, the removable elongate body 1391 and the sealing cap 1395 are integrally formed.

[0334] The removable cosmetic-fluid storage unit 1390 is inserted into the inner space of the elongate main body 1110. The removable cosmetic-fluid storage unit 1390 may be coupled to the elongate main body 1110 in a press-fit manner rather than in a threaded type engagement manner.

[0335] To this end, the removable cosmetic-fluid storage unit 1390 has at least one outer protrusion ring 1398 which protrudes from and extends along an outer circumferential surface thereof. The elongate main body 1110 has at least one inner groove ring, each having a position and shape corresponding to those of each outer protrusion ring 1398.

[0336] The coupling between the removable cosmetic-fluid storage unit 1390 and the elongate main body 1110 may be realized by engagement between the outer protrusion ring 1398 and the inner groove ring (not shown).

[0337] The sealing cap 1395 includes a removing-force receiving portion 1396 protruding from an outer end face of the cap 1395 and having a passing-through hole 1396a defined therein. The user removes the removable cosmetic-fluid storage unit 1395 from the elongate main body 1110 by inserting a ring-shaped remover (not shown) into the passing-through hole 1396a and pulling away the remover.

[0338] Specifically, the ring-shaped remover has a dimension corresponding to a dimension of the passing-through hole 1396a. The ring-shaped remover may be used to separate the removable cosmetic-fluid storage unit 1390 from the elongate main body 1110.

[0339] To remove the removable cosmetic-fluid storage unit 1390 from the elongate main body 1110, the user inserts the ring-shaped remover into the passing-through hole 1396a and then pull the ring-shaped remover in a direction such that the removable cosmetic-fluid storage unit 1390 moves away from the main body 1110. This removes the combination of the removable elongate body 1391 and the sealing cap 1395 from the elongate main body 1110.

[0340] The sealing cap 1395 may have an air-communication hole 1395a defined therein for performing the same function as the air-communication hole 1152 described above.

[0341] FIG. 21A is a perspective view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure. FIG. 21B is a perspective view illustrating a state where a cap is separated from a man body in the cosmetic-fluid dispenser in FIG. 21A.

[0342] Referring to FIG. 21A and FIG. 121B, the cosmetic-fluid dispenser according to this embodiment of the present disclosure includes an elongate main body 11110 having a main inner space storing a cosmetic-fluid therein, and a first opening 11113 defined therein, through which the actuation mechanism 11140 passes; a fluid-communication chamber 11130 disposed in the inner space of the elongate main body 11110, wherein a distal cosmetic-fluid outlet structure 11171 is fluid-communicated with the fluid-communication chamber 11130, through which the cosmetic-fluid outflows; and a cap 11180 coupled to a first end 11115 of the elongate main body 11110.

[0343] In this connection, the cosmetic-fluid stored in the inner space of the elongate main body 11110 may be of various types of cosmetic-fluids having a viscosity sufficient to flow through the distal cosmetic-fluid outlet structure 11171.

[0344] In this embodiment, when the cap 11180 is separated from the elongate main body 11110, the distal cosmetic-fluid outlet structure 11171 is exposed. When the cap 11180 is coupled with the elongate main body 11110, the distal cosmetic-fluid outlet structure 11171 is hidden within the cap 11180. After the cap 11180 is separated from the elongate main body 11110, when an external force is applied to the actuation mechanism 11140, a certain amount of cosmetic-fluid flows out through the distal cosmetic-fluid outlet structure 11171.

[0345] The cap 11180 may be configured to cover the distal cosmetic-fluid outlet structure 11171 through which the cosmetic-fluid flows. The cap 11180 may have various shapes and may be made of a material different from the elongate main body 11110.

[0346] FIG. 22A is an exploded perspective view of the cosmetic-fluid dispenser of FIG. 21A. FIG. 22B illustrates a fluid-communication chamber in FIG. 22A. FIG. 23 is a cross-sectional view of the cosmetic-fluid dispenser according to FIG. 21A. FIG. 24 is a cross-sectional view of the cosmetic-fluid dispenser according to FIG. 21B.

[0347] Referring to FIG. 22A and FIG. 24, the cosmetic-fluid dispenser according to this embodiment of the present disclosure includes an actuation mechanism 11140 configured to allow selective dispensing of a cosmetic-fluid; a elongate main body 11110 having opposite first and second end portions, and a first opening 11113 defined in a side portion thereof, wherein the elongate main body contains therein a cosmetic-fluid, wherein the actuation mechanism 11140 passes through the first opening 11113; a fluid-communication chamber 11130 disposed in the first end portion of the elongate main body 11110, wherein the fluid-communication chamber 11130 fluid-communicates with the elongate main body 11110, wherein the fluid-communication chamber 11130 is configured to cooperate with the actuation mechanism 11140 to dispense a cosmetic-fluid out of the elongate main body; a distal cosmetic-fluid outlet structure 11171 fluid-communicating with the fluid-communication chamber 11130, wherein the distal cosmetic-fluid outlet structure 11171 is disposed out of the main body 11110; and a cap 11180 removably coupled to the elongate main body 11110 at the first end portion 11115.

[0348] Referring to FIG. 22A and FIG. 24, the elongate main body 11110 is hollow and having a fluid receiving space formed therein, in which the cosmetic-fluid may be stored. The elongate main body 11110 may be made of a transparent material or a translucent material so that the cosmetic-fluid contained therein may be visible to the outside. Such materials may include glass or synthetic resin materials. In the side portion of the elongate main body 11110, the first opening 11113 is defined, through which the actuation mechanism 11140 passes.

[0349] The fluid-communication chamber 11130 is disposed within the elongate main body 11110. The fluid-communication chamber 11130 includes a chamber body 11132 having a cylindrical space defined therein, and a cosmetic-fluid outlet guide 11131 in fluid-communication with the chamber body 11132. The cosmetic-fluid outlet guide 11131 is in fluid-communication with the distal cosmetic-fluid outlet structure 11171. The chamber body 11132 has a fluid-inlet hole 11132a formed in one of lateral side walls thereof opposite to the guide 11131, a fluid-outlet hole 11132b fluid-communicating with the cosmetic-fluid outlet guide 11131, and a second opening 11132c position-corresponding to the first opening 11113. The cosmetic fluid stored in the main body 11110 flows into the cylindrical space in the chamber body 11132 through the fluid-inlet hole 11132a.

[0350] Thus, the cosmetic fluid flowing into the cylindrical space of the chamber body 11132 (in this example, the body has a rectangular box shape) is pressurized by the actuation mechanism 11140 passing through the second opening 11132c into the cylindrical space. Thus, the cosmetic fluid from the cylindrical space may outflow through the fluid-outlet hole 11132b, the guide 11131, and the cosmetic-fluid outlet 11171.

[0351] The actuation mechanism 11140 includes a pushed portion 11141a protruding out of the elongate main body 11110 to receive an external force, an insertable cylinder 11141b connected to the pushed portion 11141a and passing through the first and second openings 11113 and 11132c, and a first elastic member 11143 disposed on a bottom of the insertable cylinder 11141b and within the cylindrical space in the chamber body 11132. The first elastic member 11143 is elastically deformed via the insertable cylinder 11141b when an external force is applied to the pushed portion 11141a. Then, the first elastic member 11143 is restored by an elastic restoring force when the external force is released, thereby to allow the insertable cylinder 11141b to return to its home position.

[0352] The actuation mechanism 11140 includes a proximal sealing ring 11145 coupled to the insertable cylinder 11141b. The proximal sealing ring 11145 serves to prevent the escape of cosmetic fluid out of the cylindrical space of the chamber body when the insertable cylinder 11141b moves from the first direction to the second direction or from the second direction to the first direction. In this connection, the first or second direction may refer to a direction perpendicular to the longitudinal direction of the elongate main body 11110.

[0353] The proximal sealing ring 11145 prevents air flow in and out of the cylindrical space of the chamber body through the first opening 11113. The cylindrical space in the chamber body 11132 is kept airtight by the proximal sealing ring 11145 to prevent the cosmetic fluid in the cylindrical space in the chamber body from flowing out of the space through the first opening 1113. This prevents cosmetic-fluid leakage through the first opening 11113 in the process of repeatedly applying an external force to the actuation mechanism 11140 in order that the user uses the cosmetic-fluid. Thus, the cosmetic-fluid is not deposited on a part of the user's body. Further, this prevents the cosmetic-fluid from getting on the outer surface of the cosmetic-fluid dispenser.

[0354] When moving the actuation mechanism 11140 from the first direction to the second direction or from the second direction to the first direction, the proximal sealing ring 11145 moves along the cylindrical inner side wall of the chamber body 11132 while being coupled to the insertable cylinder 11141b. This prevents leakage of the cosmetic-fluid received within the cylindrical space through the first opening 11113.

[0355] Specifically, the proximal sealing ring 11145 is engaged with the proximal end 11141f of the inserted portion of the insertable cylinder 11141b. The proximal sealing ring 11145 projects further outward than the outer diameter of the portion 11141d between the proximal end and the distal end of the inserted portion of the insertable cylinder 11141b. Thereby, the proximal sealing ring 11145 is compressed by the cylindrical inner wall of the chamber body 11132 to have a size corresponding to the diameter of the cylindrical space of the chamber body 11132.

[0356] In this connection, the insertable cylinder 11141b has a portion 11141d between the proximal end and the distal end of the inserted portion of the insertable cylinder, the portion 11141d having a diameter substantially equal to the diameter of the cylindrical space of the chamber body 11132. The proximal end 11141f of the inserted portion of the insertable cylinder 11141b and the distal end 11141e of the inserted portion of the insertable cylinder 11141b both have a smaller diameter than the portion 11141d between the proximal end and the distal end of the inserted portion of the insertable cylinder.

[0357] The actuation mechanism 11140 further includes a distal sealing ring 11147 coupled to the insertable cylinder 11141b. The distal sealing ring 11147 slides along the cylindrical inner wall of the chamber body 11132 when the insertable cylinder 11141b moves from the first direction to the second direction or from the second direction to the first direction.

[0358] The distal sealing ring 11147 is joined to the distal end 11141e of the inserted portion of the insertable cylinder. The distal sealing ring 11147 further projects outwardly beyond the diameter of the portion 11141d between the proximal and distal ends of the inserted portion of the insertable cylinder 11141b. The distal sealing ring 11147 is compressed by the inner wall of the chamber body 11132 to have a diameter substantially the same as the diameter of the cylindrical space of the chamber body 11132.

[0359] In this connection, the distal sealing ring 11147 may be made of a material having an elastic force that can be deformed by an external force.

[0360] When an external force is applied to the pushed portion 11141a of the actuation mechanism 11140, the insertable cylinder 11141b is displaced from the first position to the second position in the first direction. The displacement of the insertable cylinder 11141b from the first position to the second position means movement of the cylinder 11141b into the cylindrical space of the chamber body 11132. At this time, the insertable cylinder 11141b slides along the inner cylindrical wall in contact with the inner cylindrical wall of the chamber body 11132.

[0361] The proximal sealing ring 11145 coupled to the proximal end 11141f of the inserted portion of the insertable cylinder, and the distal sealing ring 11147 coupled to the distal end 11141e of the inserted portion of the insertable cylinder moves along and on the inner cylindrical wall of the chamber body while contacting the inner cylindrical wall. The proximal sealing ring 11145 and the distal sealing ring 11147 are thereby compressed by the inner cylindrical wall of the chamber body 11132. Thus, the proximal sealing ring 11145 and the distal sealing ring 11147 are sliding along the inner cylindrical wall of the chamber body 11132 while pressing against the inner cylindrical wall of the chamber body 11132.

[0362] At this time, a portion of the cylindrical space of the chamber body 11132, which is located below the distal sealing ring 11147, is sealed by the distal sealing ring 11147. As a result, a pressure to discharge the cosmetic-fluid from the cylindrical space of the chamber body to the cosmetic-fluid outlet guide 11131 rises. Thereby, the cosmetic-fluid flow into the cosmetic-fluid outlet guide 11131 is effectively realized.

[0363] More specifically, the distal sealing ring 11147 prevents the loss of cosmetic-fluid, which may otherwise occur when the fluid leaks through the fine gap between the outer face of the insertable cylinder 11141b and the inner cylindrical wall of the chamber body 11132. Thereby, the cosmetic-fluid outflow from within the cylindrical space of the chamber body to the cosmetic-fluid outlet guide 11131 is effectively realized. This outflow is realized with a stronger pressure, compared to the case where the distal sealing ring 11147 is absent.

[0364] In addition, the user must apply an external force to the pushed portion 11141a sufficient to overcome the frictional force between the distal sealing ring 11147 and the inner cylindrical wall of the chamber body 11132. Therefore, as compared with the case where the distal sealing ring 11147 is not provided, a stronger external force must be applied to the pushed portion 141a.

[0365] The actuation mechanism 11140 may further include a step portion 11141c formed between the pushed portion 11141a and the insertable cylinder 11141b and protruding outwardly out of the main body 1110.

[0366] After the actuation mechanism 11140 is inserted into the first opening 11113, an outer housing 11160 having a third opening 11161 formed therein to a diameter corresponding to an outer diameter of the step portion 11141c surrounds a portion of the elongate main body 11110 having the first opening 11113 defined therein. In this regard, the outer housing 11160 may be coupled to the elongate main body 11110 such that the first opening 11113 and the third opening 11161 communicate with each other. When the external force applied to the actuation mechanism 11140 is released, the insertable cylinder 11141b is supported by the outer housing 11160, so that the actuation mechanism 11140 may be prevented from escape out of the main body 11110.

[0367] In an upper end of the step portion 11141c, a protrusion-receiving hole h is formed in which a protrusion r from the pushed portion 11141a is inserted. When the protrusion r from the pushed portion 11141a is received in the protrusion-receiving hole h, the pushed portion 11141a and the insertable cylinder 11141b are engaged with each other.

[0368] In this connection, a size of a cross-sectional area of the pushed portion 11141a is larger than a size of a cross-sectional area of the step portion 11141c. As a result, a contact area of the pushed portion 11141a with a part of the user's body is increased, so that the user can more easily apply the external force to the pushed portion 11141a.

[0369] The fluid-communication chamber 11130 is inserted into the elongate main body 11110. The fluid-communication chamber 11130 is located below the actuation mechanism 11140 such that the pressurization of the cosmetic-fluid contained in the chamber 11130 by the actuation mechanism 11140 is facilitated. The cosmetic-fluid of the amount (volume) corresponding to the external force applied to the actuation mechanism 11140 is discharged out of the main body 11110 through the distal cosmetic-fluid outlet structure 11171.

[0370] The fluid-communication chamber 11130 may be inserted into the inner space of the elongate main body 11110. The fluid-communication chamber 11130 includes the chamber body 11132 having the cylindrical space defined therein, and the cosmetic-fluid outlet guide 11131 in fluid-communication with the chamber body 11132. The cosmetic-fluid outlet guide 11131 is in fluid-communication with the distal cosmetic-fluid outlet structure 11171. The chamber body 11132 has the fluid-inlet hole 11132a formed in one of lateral side walls thereof opposite to the guide 11131, the fluid-outlet hole 11132b fluid-communicating with the cosmetic-fluid outlet guide 11131, and the second opening 11132c position-corresponding to the first opening 11113. The cosmetic fluid stored in the main body 11110 flows into the cylindrical space in the chamber body 11132 through the fluid-inlet hole 11132a.

[0371] In this embodiment, the fluid-communication chamber 11130 may be different from the fluid-communication chamber as described with reference to the above-defined embodiments.

[0372] In this embodiment, the fluid-communication chamber 11130 may has a cosmetic-fluid inlet guide 11330 coupled thereto such that one end of the cosmetic-fluid inlet guide 11330 communicates with the fluid-inlet hole 11132a. The cosmetic-fluid inlet guide 11330 passes through the side wall of the chamber body 11132. The other end of the cosmetic-fluid inlet guide 11330 communicates with the first inner sub-space S1.

[0373] The fluid-communication chamber 11130 further includes the hollow cosmetic-fluid inlet guide 11330 having one end in fluid communication with the fluid-inlet hole 11132a and the other end protruding into the first inner sub-space S1; a hole-opening/closing member elastic support 11340 received in the other end portion of the cosmetic-fluid inlet guide 11330 and configured to support a hole-opening/closing member 11350; the hole-opening/closing member 11350 disposed at the distal end of the hole-opening/closing member elastic support 11340; and a hollow elongate cover 11360 surrounding the other end of the cosmetic-fluid inlet guide 11330, wherein the hollow elongate cover has first and second holes 11361 and 11362 defined in one end and the other end thereof respectively, wherein a portion thereof contacting the hole-opening/closing member 11350 has a truncated cone shape.

[0374] One end of the cosmetic-fluid inlet guide 11330 has a diameter larger than a diameter of the fluid-inlet hole 11132a so as to surround the fluid-inlet hole 11132a. A diameter of the first hole 11361 of the hollow elongate cover 11360 is greater than a diameter of its second hole 11362. Thus, the distal end of the hollow elongate cover 11360 has a truncated cone shape. The hole-opening/closing member 11350 is disposed at the distal end of the hole-opening/closing member elastic support 11340 and has a spherical shape. The hole-opening/closing member 11350 can reversibly open and close the second opening 11362 of the hollow elongate cover 11360 via a force exerted by the hole-opening/closing member elastic support 11340.

[0375] When the actuation mechanism is lowered, the second opening 11362 of the hollow elongate cover 11360 is closed via the hole-opening/closing member elastic support 11340 and the hole-opening/closing member 11350, thus, to limit the flow of the cosmetic-fluid through the fluid-inlet hole 11132a. When the actuation mechanism is elevated, the second opening 11362 is opened to allow the flow of the cosmetic fluid through the fluid-inlet hole 11132a to be activated.

[0376] In one embodiment, the hole-opening/closing member elastic support 11340 may be implemented with a spring. The hole-opening/closing member elastic support 11340 is received within the cosmetic-fluid inlet guide 11330 and extends from one end to the other end of a portion of the cosmetic-fluid inlet guide 11330 protruding into the space s1. The hole-opening/closing member 11350 is disposed at the distal end of the hole-opening/closing member elastic support 11340. The hole-opening/closing member 11350 is configured to close the second opening 11362 of the hollow elongate cover 11360. The diameter t1 of the cosmetic-fluid inlet guide 11330 is greater than the diameter of the fluid-inlet hole 11132a. Thus, the hole-opening/closing member elastic support 11340 received in the cosmetic-fluid inlet guide 11330 does not enter the fluid-inlet hole 11132a and is retained within the cosmetic-fluid inlet guide 11330.

[0377] When the pressure of the cosmetic-fluid in the cylindrical space of the chamber body is not high, the hole-opening/closing member elastic support 11340 does not press the hole-opening/closing member 11350 so that the second opening 11362 is not closed. Thereby, movement of the cosmetic-fluid through the second opening 11362 is possible. On the other hand, when the pressure within the cylindrical space of the chamber body is high, the cosmetic-fluid presses the hole-opening/closing member elastic support 11340, thereby pressing the hole-opening/closing member 11350, thus to block the flow of fluid through the second opening 11362.

[0378] The cosmetic-fluid inlet guide 11330 has an elongate hollow cylindrical shape. The hollow elongate cover 11360 has a larger inner diameter than an outer diameter of the cosmetic-fluid inlet guide 11330 to accommodate the cosmetic-fluid inlet guide 11330 therein. The hollow elongate cover 11360 has an elongate hollow cylindrical shape. A portion of the hollow elongate cover 11360 in contact with the hole-opening/closing member 11350 has a truncated-conical shape to surround the hole-opening/closing member 11350 exposed outwardly from the cosmetic-fluid inlet guide 11330. The cosmetic-fluid inlet guide 11330 is inserted into the hollow elongate cover 11360 so that the hole-opening/closing member elastic support 11340 and the hole-opening/closing member 11350 received within the cosmetic-fluid inlet guide 11330 is not prevented from escape therefrom.

[0379] A first fastening ring 11331 is formed on the outer circumference of the cosmetic-fluid inlet guide 11330 and a second fastening ring 11362 is formed on the inner circumference of the hollow elongate cover 11360. Via the engagement between the first fastening ring 11331 and the second fastening ring 11362, the hollow elongate cover 11360 is tightly coupled to the cosmetic-fluid inlet guide 11330. The cosmetic-fluid inlet guide 11330 is inserted into the hollow elongate cover 11360 such that the fluid-inlet hole 11132a and the second opening 11362 of the hollow elongate cover 11360 are arranged so as to fluid-communicate with each other.

[0380] In one embodiment, the first fastening ring 11331 and the second fastening ring 11362 are implemented with a protrusion and a groove respectively. The first fastening ring 11331 and the second fastening ring 11362 may be engaged with each other by pressure-fitting. Alternatively, the first fastening ring 11331 and the second fastening ring 11362 are realized by a groove and a protrusion respectively. Alternatively, the first fastening ring 11331 and the second fastening ring 11362 may be engaged with each other by a thread-type engagement manner. The first and second fastening rings 11331 and 11362 are intended to securely secure the hollow elongate cover 11360 to the cosmetic-fluid inlet guide 11330. Thus, as long as this object is achieved by the first and second fastening rings 11331 and 11362, various configurations of the first and second fastening rings 11331 and 11362 may be considered.

[0381] The cylindrical space within the chamber body of the fluid-communication chamber 11130 is reduced by a first volume by the actuation mechanism 11140 being displaced in the first direction by the applied external force, and thus the fluid amount corresponding to the first volume flows out through the cosmetic-fluid outlet guide 11131 to the distal cosmetic-fluid outlet structure 11171. To the contrary, when the applied external force is released, the actuation mechanism 11140 is displaced in the second direction opposite to the first direction, such that the cylindrical space in the chamber body of the fluid-communication chamber 11130 is expanded by the first volume. At this time, the cosmetic fluid stored in the elongate main body 11110 flows through the second opening 11362, and the fluid inlet guide 11330 into the cylindrical space in the chamber body 11132 to compensate for the expanded first volume.

[0382] In other words, when an external force is applied, the actuation mechanism 11140 is displaced in a first direction such that at least a portion thereof is inserted into the cylindrical space of the chamber body and thus, the first volume of the cosmetic-fluid from the cosmetic-fluid contained in the cylindrical space is flowed through the fluid outlet hole 11132b into the distal cosmetic-fluid outlet structure 11171. When the applied external force is released, the actuation mechanism 11140 is displaced in a second direction opposite to the first direction, the cosmetic-fluid of the first volume is introduced from the inner sub-space S1 through the second opening 11362, the fluid inlet guide 11330, and the fluid-inlet hole 11132a into the cylindrical space of the chamber body 11132. This operation principle will be described in detail with reference to FIG. 25 to FIG. 27.

[0383] The sealing cap 11150 is inserted within the second end of the elongate main body 11110 to seal the second end.

[0384] The distal cosmetic-fluid outlet structure 11171 has an outlet hole 11171a formed in its downstream region for discharging the cosmetic-fluid, and an inserted portion 11171b formed in the upstream region thereof and inserted into a distal end of the cosmetic-fluid outlet guide 11131.

[0385] The outlet hole 11171a may be formed in an elliptical shape so that the outlet hole 11171a may be closely adhered to the skin of the user. According to an embodiment of the present disclosure, a cosmetic brush (not shown) may be coupled to the outlet hole portion. As a result, the cosmetic fluid drained through the outlet hole may be absorbed into the user's skin via the soft brush. In this way, the user may use the cosmetic-fluid for skin beauty while feeling the touch of the soft brush.

[0386] When the inserted portion 11171b is inserted into the distal end of the cosmetic-fluid outlet guide 11131, a spacing Q is defined between an outer peripheral surface of the inserted portion 11171b and an inner peripheral surface of the cosmetic-fluid outlet guide 11131.

[0387] The inserted portion 11171b has a first inserted sub-portion 11171c, a second inserted sub-portion 11171d, and a hole-opening/closing member 11173.

[0388] The first inserted sub-portion 11171c defines therein a first fluid-communication channel V1 in fluid-communication with the outlet hole 11171a. The first inserted sub-portion 11171c has a first fluid-communication hole H1 defined therein to allow communication between the first fluid-communication channel V1 and the spacing Q.

[0389] The second inserted sub-portion 11171d defines therein a second fluid-communication channel V2 in fluid-communication with the fluid-outlet hole 11132b. The second inserted sub-portion 11171d has a second fluid-communication hole H2 that allows fluid-communication between the second fluid-communication channel V2 and the spacing Q.

[0390] The hole-opening/closing member 11173 is constructed to surround the second fluid-communication hole H2. The hole-opening/closing member 11173 controls the flow of cosmetic-fluid through the second fluid-communication hole H2.

[0391] Specifically, when an external force is applied to the actuation mechanism 11140, the hole-opening/closing member 11173 is elastically deformed via a pressure generated by the cosmetic-fluid moving in the distal end direction of the cosmetic-fluid outlet guide 11131 through the fluid-outlet hole 11132b, thereby to open the second fluid-communication hole H2. When the external force applied to the actuation mechanism 11140 is released such that the pressure is weakened, the hole-opening/closing member 11173 is restored by an elastic restoring force, thereby to close the second fluid-communication hole H2.

[0392] The hole-opening/closing member 11173 may be implemented as a kind of a thin rubber film which surrounds the outer circumference of the second inserted sub-portion 11171d and controls the opening and closing of the second fluid-communication hole H2.

[0393] The cosmetic-fluid dispenser further includes a compressing member 11190 disposed within the inner space of the elongate main body 11110. The compressing member 11190 divides the inner space of the main body 11110 into a first inner sub-space S1 and a second inner sub-space S2. The first inner sub-space is formed between the compressing member 11190 and the fluid-communication chamber 11130, and the cosmetic-fluid is stored in the first inner sub-space. When the external force applied to the actuation mechanism 11140 is released, a first volume of cosmetic-fluid from the cosmetic-fluid stored in the first inner sub-space S1 passes through the fluid-inlet hole 11132a into the cylindrical space of the chamber body 11132. At the same time, the compressing member 11190 is displaced along the inner face of the elongate main body 11110 such that the volume of the first inner sub-space is reduced by the first volume.

[0394] The second inner sub-space is formed between the compressing member 11190 and the sealing cap 11150. When the volume of the first inner sub-space is reduced by the first volume, the volume of the second inner sub-space is expanded by the first volume.

[0395] A detailed description of the compressing member 11190 will be given when an operation mechanism of the cosmetic-fluid dispenser based on the absence or presence of the external force thereto will be described with reference to FIG. 25 to FIG. 27.

[0396] FIG. 25 and FIG. 26 are schematic views illustrating a state where an external force is applied to the actuation mechanism of the cosmetic-fluid dispenser according to an embodiment of the present disclosure. FIG. 27 is a schematic view illustrating a state in which the external force applied to the actuation mechanism of the cosmetic-fluid dispenser according to an embodiment of the present disclosure is released.

[0397] Referring to FIG. 25 and FIG. 26, after the cap 11180 is removed, when a user who wishes to use the cosmetic-fluid dispenser applies an external force in a first direction onto the pushed portion 11141a using a part (a finger) of his or her body, the insertable cylinder 11141b is displaced from the first position to the second position along the first direction. In this connection, since the movement of the insertable cylinder 11141b from the first position to the second position refers to the movement of the cylinder 11141b into the cylindrical space in the chamber body 11132, the volume of the cylindrical space of the chamber body 11132 is reduced by the inserted portion of the insertable cylinder 11141b.

[0398] In this connection, the volume of the cylindrical space of the chamber body is reduced by the first volume. In other words, a portion of the insertable cylinder 11141b corresponding to the first volume is inserted into the cylindrical space in the chamber body. As the pushed portion 11141a moves from the first position to the second position, the first elastic member 143 elastically deforms in a compressed manner.

[0399] In response to the displacement of the insertable cylinder 11141b into the cylindrical space of the chamber body, the cosmetic-fluid contained within the cylindrical space of the chamber body is transferred to the distal cosmetic-fluid outlet structure 11171 through the cosmetic-fluid outlet guide 11131.

[0400] In this connection, a cosmetic-fluid outflow path from the cylindrical space of the chamber body may include an outflow path through the cosmetic-fluid outlet guide 11131 and an outflow path through the fluid-inlet hole 11132a. However, during movement of the insertable cylinder 11141b from the first position to the second position, the fluid-inlet hole 11132a is closed by the insertable cylinder. The outflow path through the fluid-inlet hole 11132a may be deactivated. Thus, the cosmetic fluid in the cylindrical space of the chamber body may outflow only via the outflow path through the cosmetic-fluid outlet guide 11131. Accordingly, the user may use the cosmetic-fluid discharged through the distal cosmetic-fluid outlet structure 11171.

[0401] A detailed description of the closure of the fluid-inlet hole 11132a is as follows: the insertable cylinder 11141b is inserted into the cylindrical space of the chamber body 11132 to increase the pressure of the cosmetic-fluid in the cylindrical space. As the pressure of the cosmetic-fluid increases, the cosmetic-fluid enters the fluid inlet guide 11330 through the fluid-inlet hole 11132c and presses the hole-opening/closing member elastic support 11340. As such, the hole-opening/closing member 11350 in contact with the distal end of the hole-opening/closing member elastic support 11340 closes the second opening 11362 of the elongate hollow cover 11360. Thereby, an equivalent effect to the effect of closing the fluid-inlet hole 11132a is obtained. This prevents the outflow or inflow of the cosmetic fluid through the fluid-inlet hole 11132c.

[0402] As for the operation of the insertable cylinder 11141b, when an external force is applied to the pushed portion 11141a, the insertable cylinder 11141b is displaced from the first position to the second position, while when the external force applied to the pushed portion 11141a is released, the insertable cylinder 11141b is displaced via the first elastic member 143 from the second position to the first position. When the insertable cylinder 11141b is at the second position, the insertable cylinder 11141b contacts the side wall of the chamber body 11132 to close the fluid-inlet hole 11132a defined in the side wall of the chamber body 11132, thereby restricting the movement of the cosmetic-fluid through the fluid-inlet hole 11132a. When the insertable cylinder 11141b is at the first position, and thus does not block the fluid-inlet hole 11132, thereby to open the fluid-inlet hole 11132, whereby the movement of the cosmetic-fluid through the fluid-inlet hole 11132a is activated.

[0403] The hole-opening/closing member 11173 opens the second fluid-communication hole H2 via pressure generated from the cosmetic-fluid moving through the fluid-outlet hole 11132b from within the cylindrical space of the chamber body 11132. Thus, the cosmetic fluid contained in the second fluid-communication channel V2, which could not escape out of the channel V2 through the second fluid-communication hole H2, now passes through the second fluid-communication hole H2, the spacing Q, the first fluid-communication hole H1 and the first fluid-communication channel V1 in this order. In this way, the fluid may be discharged out of the outlet hole 11171a.

[0404] As the cosmetic fluid contained in the second fluid-communication channel V2 flows out through the second fluid-communication hole H2, the pressure applied to the hole-opening/closing member 11173 weakens. As a result, the hole-opening/closing member 11173 is resiliently restored by elastic restoring force, thereby to close the second fluid-communication hole H2. In this connection, the cosmetic fluid contained in the fluid-communication chamber 11132 is consumed by an amount of the cosmetic-fluid exiting through the outlet hole 11171a.

[0405] Referring to FIG. 27, when the external force applied to the pushed portion 11141a is released, the first elastic member 11143 elastically deformed in a compressed manner is elastically deformed in such a manner that it is expanded by its restoring force. Accordingly, the displacement of the pushed portion 11141a from the second position to the first position is realized.

[0406] In this connection, the insertable cylinder 11141b inserted in the cylindrical space of the chamber body 11132 is displaced in the second direction from within the cylindrical space of the chamber body. As the insertable cylinder 11141b is displaced in the second direction, an empty space of the first volume is created in the cylindrical space of the chamber body. Accordingly, the pressure applied to the hole-opening/closing member 11350 by the hole-opening/closing member elastic support 11340 received inside the fluid inlet guide 11330 is weakened. This reduces the force by which the hole-opening/closing member 11350 closes the second opening 11362, so that the cosmetic-fluid enters through the second opening 11362. Thus, the cosmetic-fluid flows from the sub-space S1 through the fluid inlet guide 11330 into the fluid-inlet hole 11132a. Thereby, the first volume of the void space in the cylindrical space of the chamber body is eventually filled with the fluid.

[0407] Specifically, the first opening 11113 is kept airtight by the proximal sealing ring 11145, thereby preventing air from flowing through the first opening 11113. Accordingly, since there is no inflow of air into the cylindrical space of the chamber body 11132, the empty space of the first volume is at a vacuum state. In this connection, the cosmetic-fluid stored in the first inner sub-space S1 of the elongate main body 11110 is sucked through the fluid-inlet hole 11132a into the empty portion of the cylindrical space of the chamber body at this vacuum state. Using this sucking phenomenon, a constant amount of cosmetic-fluid may be kept in the cylindrical space of the chamber body.

[0408] In this connection, since the second fluid communication channel H2 which may act as a cosmetic-fluid movement path on the other side of the chamber body 11132 into the cylindrical space of the body 11132, is blocked by the opening/closing member 11173, the cosmetic-fluid inflow into the cylindrical space may be realized only through the fluid-inlet hole 11132a.

[0409] In order for the cosmetic fluid to move from the first inner sub-space S1 of the elongate main body 11110 into the cylindrical space of the chamber body through the fluid-inlet hole 11132a, only the cosmetic-fluid should be present in the first inner sub-space S1. Therefore, since the fluid of the first volume has been emitted from the first inner sub-space S1, the volume of the first inner sub-space S1 must be variable to remove air creation therein.

[0410] To this end, the cosmetic-fluid dispenser according to the present disclosure comprises the compressing member 11190. The compressing member 11190 may define the first inner sub-space S1 and prevent the inflow of air into the space S1.

[0411] The compressing member 11190 may be displaced in a sliding manner along and on the inner face of the elongate main body 11110. This displacement is based on the volume change of the space S1 due to the outflow of the cosmetic fluid from the first inner sub-space S1.

[0412] Specifically, since there is only the cosmetic-fluid in the first inner sub-space S1, the empty space in the space S1, which occurs in response to the outflow of the cosmetic-fluid, must be filled with air or an external substance. In this regard, the compressing member 11190 prevents inflow of the external air or material into the first inner sub-space S1, so that the inner volume of the first inner sub-space S1 is reduced to remove the empty space, thereby to enable the cosmetic-fluid outflow therefrom.

[0413] The compressing member 11190 divides the inner space of the elongate main body 11110 into the first inner sub-space S1 and the second inner sub-space S2. When the external force applied to the actuation mechanism 11140 is released so that the first volume of cosmetic-fluid from the cosmetic-fluid stored in the first inner sub-space S1 passes through the fluid-inlet hole 11132a into the cylindrical space of the chamber body, the compressing member 11190 is slidably moved along and one the inner face of the elongate main body 11110 such that the volume of the first inner sub-space S1 is reduced by the first volume.

[0414] At the same time, the second inner sub-space S2 divided by the compressing member 11190 is correspondingly expanded as the volume of the first inner sub-space S1 is reduced.

[0415] In this connection, the sealing cap 11150 has an air-communication hole 11152 defined therein, which allows air-communication between the second inner sub-space S2 and an exterior space of the cosmetic-fluid dispenser 1. The air-communication hole 11152 serves as a channel through which, when the second inner sub-space S2 is expanded by the first volume, the outside air of the same volume as the first volume flows into the second inner sub-space S2.

[0416] On the other hand, the cosmetic-fluid of an amount corresponding to the first volume from the cosmetic-fluid stored in the elongate main body 11110 is transferred into the cylindrical space of the chamber body. Thus, the cosmetic fluid contained within the cylindrical space of the chamber body 11132 is in a standby state ready to receive the external force from the user again.

[0417] After using the cosmetic-fluid exiting through the distal cosmetic-fluid outlet structure 11171, when the user determines that the cosmetic-fluid is further needed, the user may re-apply an external force onto the pushed portion 11141a of the actuation mechanism 11140, which has moved from the second position to the first position. In this way, the above-described series of processes may be repeated.

[0418] According to the embodiment described above, the chamber body 11132 is described as being removably inserted into the elongate main body 11110. However, the present disclosure is not limited thereto. In one embodiment, the chamber body 11132 may be integral with the elongate main body 11110.

[0419] FIG. 28 is an exploded perspective view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0420] Referring to FIG. 28, the cosmetic-fluid dispenser according to this embodiment of the present disclosure has the same configuration and effect as those of the cosmetic-fluid dispenser as shown in FIG. 23 to FIG. 27 except for a removable cosmetic-fluid storage unit 11290. Thus, hereinafter, only the removable cosmetic-fluid storage unit 11290 will be described.

[0421] The removable cosmetic-fluid storage unit 11290 may accommodate therein a compressing member 11293 with the same configuration as that as described above, and may be removably inserted into the elongate main body 11110.

[0422] Specifically, the removable cosmetic-fluid storage unit 11290 includes a removable elongate body 11291 having an inner space therein, and removably inserted into the inner space of the elongate main body 11110; the compressing member 11293 dividing the inner space of the removable elongate body 11291 into the third inner sub-space S3 and the fourth inner sub-space S4; and a sealing cap 11295 to seal the inner space of the removable elongate body 11291 and the second end of the elongate main body 11110. The cosmetic-fluid is stored in the third inner sub-space S3 formed between the compressing member 11293 and the fluid-communication chamber 11130. When the external force applied to the actuation mechanism 11140 is released so that the cosmetic-fluid of the same volume as the first-volume from the cosmetic-fluid stored in the third inner sub-space S3 passes through the fluid-inlet hole 11132a into the cylindrical space of the chamber body 11132, the compressing member 11293 is displaced in a sliding manner along and on the inner face of the removable elongate body 11291 so that the volume of the third inner sub-space S3 is reduced by the first volume.

[0423] In this connection, the removable cosmetic-fluid storage unit 11290 may be separately manufactured and then removably inserted into the elongate main body 11110. Thus, when the removable cosmetic-fluid storage unit 11290 is separated from the elongate main body 11110, the cosmetic-fluid may be refilled into the removable cosmetic-fluid storage unit 11290 which in turn may be inserted into the elongate main body 11110. This allows the cosmetic-fluid dispenser to be refilled with the cosmetic-fluid.

[0424] To this end, the removable cosmetic-fluid storage unit 11290 may be releasably coupled to the elongate main body 11110 by threaded-type engagement. In this connection, the sealing cap 11295 has a coin-insertion hole 11297 defined therein, into which a portion of a common coin may be inserted. Thereby, when the coin is inserted into the coin-insertion hole 11297 and then the user rotates the coin, the threaded-type engagement may be activated or deactivated.

[0425] An outer sealing ring 11291a is disposed on the outer surface of the removable elongate body 11291 to improve the bonding force with the inner surface of the elongate main body 11110 when the removable elongate body 11291 is inserted into the inner space of the elongate main body 11110. The outer sealing ring 11291a is made of a rubber material having elasticity. When the removable cosmetic-fluid storage unit 11290 is inserted into the elongate main body 11110, the outer sealing ring 11291a is deformed in contact with the inner surface of the elongate main body 11110, thereby maintaining the airtightness between the removable elongate body 11291 and the elongate main body 11110 and improving the bonding force therebetween.

[0426] FIG. 29 and FIG. 30 are schematic views for illustrating a cosmetic-fluid dispenser according to one embodiment of the present disclosure.

[0427] Referring to FIG. 29 and FIG. 30, the cosmetic-fluid dispenser according to this embodiment of the present disclosure has the same configuration and effect as those of the cosmetic-fluid dispenser as shown in FIG. 23 to FIG. 27, except for a removable cosmetic-fluid storage unit 11390. Hereinafter, thus, only the removable cosmetic-fluid storage unit 11390 will be described.

[0428] In FIG. 29 and FIG. 30, a removable elongate body 11391 and a sealing cap 11395 are separately shown for the sake of convenience of illustration. However, actually, the removable elongate body 11391 and the sealing cap 11395 are integrally formed.

[0429] The removable cosmetic-fluid storage unit 11390 is inserted into the inner space of the elongate main body 11110. The removable cosmetic-fluid storage unit 11390 may be coupled to the elongate main body 11110 in a press-fit manner rather than in a threaded type engagement manner.

[0430] To this end, the removable cosmetic-fluid storage unit 11390 has at least one outer protrusion ring 11398 which protrudes from and extends along an outer circumferential surface thereof. The elongate main body 11110 has at least one inner groove ring, each having a position and shape corresponding to those of each outer protrusion ring 11398.

[0431] The coupling between the removable cosmetic-fluid storage unit 11390 and the elongate main body 11110 may be realized by engagement between the outer protrusion ring 11398 and the inner groove ring (not shown).

[0432] The sealing cap 11395 includes a removing-force receiving portion 11396 protruding from an outer end face of the cap 11395 and having a passing-through hole 11396a defined therein. The user removes the removable cosmetic-fluid storage unit 11395 from the elongate main body 11110 by inserting a ring-shaped remover (not shown) into the passing-through hole 11396a and pulling away the remover.

[0433] Specifically, the ring-shaped remover has a dimension corresponding to a dimension of the passing-through hole 11396a. The ring-shaped remover may be used to separate the removable cosmetic-fluid storage unit 11390 from the elongate main body 11110.

[0434] To remove the removable cosmetic-fluid storage unit 11390 from the elongate main body 11110, the user inserts the ring-shaped remover into the passing-through hole 11396a and then pull the ring-shaped remover in a direction such that the removable cosmetic-fluid storage unit 11390 moves away from the main body 11110. This removes the combination of the removable elongate body 11391 and the sealing cap 11395 from the elongate main body 11110.

[0435] The sealing cap 11395 may have an air-communication hole 11395a defined therein for performing the same function as the air-communication hole 11152 described above.

[0436] FIG. 31 is a cross-sectional view of a cosmetic-fluid dispenser according to one embodiment of the present disclosure. FIGS. 32 and 33 are schematic views for illustrating a state where an external force is applied to an actuation mechanism of the cosmetic-fluid dispenser of FIG. 31.

[0437] Referring to FIG. 31 to FIG. 33, the cosmetic-fluid dispenser according to this embodiment of the present disclosure has the same structure as those of FIG. 21 to FIG. 30, except for those as described below. Therefore, the repeated contents are omitted.

[0438] Referring to FIG. 31 to FIG. 33, the cosmetic-fluid dispenser according to this embodiment further includes a fluid-outlet control ball 11475 housed within a distal cosmetic-fluid outlet structure 11471. The fluid-outlet control ball 11475 can control the amount of cosmetic-fluid exiting through the distal cosmetic-fluid outlet structure 11471.

[0439] The distal cosmetic-fluid outlet structure 11471 has an outlet hole 11471a formed in its downstream region for discharging the cosmetic-fluid, and an inserted portion 11471c formed in the upstream region thereof and inserted into a distal end of the cosmetic-fluid outlet guide 11431.

[0440] The outlet hole 11471a may be formed in an elliptical shape so that the outlet hole 11471a may be closely adhered to the skin of the user. According to an embodiment of the present disclosure, a cosmetic brush (not shown) may be coupled to the outlet hole portion. As a result, the cosmetic fluid drained through the outlet hole may be absorbed into the user's skin via the soft brush. In this way, the user may use the cosmetic-fluid for skin beauty while feeling the touch of the soft brush.

[0441] An inner diameter of the distal end portion of the cosmetic-fluid outlet guide 11431 is larger than an inner diameter of a middle extension portion of the cosmetic-fluid outlet guide 11431. The inserted portion 11471c of the distal cosmetic-fluid outlet structure 11471 is inserted into the distal end of the cosmetic-fluid outlet guide 11431.

[0442] According to this embodiment of the present disclosure, a second elastic member 11473 is disposed between an outer peripheral surface of the inserted portion 11471c of the distal cosmetic-fluid outlet structure 11471 and an inner peripheral surface of the distal end portion of the cosmetic-fluid outlet guide 11431. At a rear end of the second elastic member 11473, the outlet-control ball 11475 having a larger diameter than that of a middle extension portion of the cosmetic-fluid outlet guide 11431 may be disposed.

[0443] In this connection, when an external force is applied to the actuation mechanism 140, the outlet-control ball 11475 is subjected to a pressure generated by the cosmetic-fluid moving in the distal end direction of the cosmetic-fluid outlet guide 11431 through the fluid-outlet hole 11432b, and, thus, is moved in a third direction. When the pressure generated by the cosmetic-fluid is weakened, the outlet-control ball 11475 is moved by the second elastic member 11473 in a fourth direction opposite to the third direction. Thereby, the outlet-control ball 11475 closes an inlet hole 11431b formed in a boundary region between the distal end and the middle extension portion of the cosmetic-fluid outlet guide 11431.

[0444] In the cosmetic-fluid dispenser according to this embodiment, the distal cosmetic-fluid outlet structure 11471 for discharging cosmetic-fluid from the cylindrical space to the outside, and the fluid inlet guide 11330 for introducing the cosmetic-fluid stored in the first inner sub-space S1 into the cylindrical space may be disposed toward both side faces of the actuation mechanism 11440 respectively. In this regard, the outlet-control ball 11475 and the hole-opening/closing ball 11350 may be received within the distal cosmetic-fluid outlet structure 11471 and the fluid inlet guide 11330, respectively.

[0445] As shown in FIG. 32, when the actuation mechanism 11440 is pushed downwards in the first direction, the second elastic member 11473 receives an pressure, and, thus, is moved in a third direction perpendicular to the first direction, i.e., in a direction toward the distal cosmetic-fluid outlet structure 11471. Thereby, the outlet-control ball 11475 opens the inlet hole 11431b. As a result, the cosmetic-fluid and air are discharged to the outside through the distal cosmetic-fluid outlet structure 11471. At the same time, the hole-opening/closing member elastic support 11340 presses the hole-opening/closing member 11350 in a fourth direction opposite to the third direction, thereby to block the second opening 11362.

[0446] As shown in FIG. 33, when the actuation mechanism 11440 moves in the second direction, that is, in an upward direction, the second elastic member 11473 which has been pressed is restored in the fourth direction, whereby the outlet-control ball 11475 closes the distal cosmetic-fluid outlet structure 11471. At the same time, the hole-opening/closing member elastic support 11340 is resiliently deformed in the third direction so that the hole-opening/closing member 11350 is moved away from the second opening 11362 of the elongate hollow cover 11360 in the third direction. This causes the cosmetic fluid contained in the first inner sub-space S1 of the elongate main body to flow into the cylindrical space of the chamber body.

[0447] FIG. 34 is a perspective view showing a state of coupling between an elongate main body and a cap according to one embodiment of the present disclosure. FIG. 35 is a perspective view showing a state of separation between the elongate main body and the cap in FIG. 34.

[0448] Referring to FIG. 34 and FIG. 35, the cosmetic-fluid dispenser according to the present embodiment includes an elongate main body 21110 for storing cosmetic-fluid therein and a distal cosmetic-fluid outlet structure 21171 coupled to one end of the elongate main body 21110 to allow the cosmetic-fluid to flow out to the outside. The distal cosmetic-fluid outlet structure 21171 may be coupled to an end extension 21130 extending from a distal end 21115 of the elongate main body 21110. The end extension 21130 may be accommodated in an empty space in the cap 21180 when the elongate main body 21110 and the cap 21180 are coupled with each other.

[0449] The cap 21180 further includes a fastening rib 21185 projecting from the end of the cap 21180 toward the actuation mechanism 21140 of the elongate main body 2110. The actuation mechanism 21140 includes a pushed portion 21141 receiving an external force, and a step portion 21142 connected to the bottom of the pushed portion 21141 so as to support the pushed portion 21141 and having a smaller diameter than that of the pushed portion 21141.

[0450] The fastening rib 21185 extends toward the step portion 21142. The distal end of the fastening rib 21185 is rounded to correspond to the shape of the outer surface of the step portion 21142. The fastening rib 21185 protruding from the cap 21180 coupled to the distal end of the elongate main body 21110 protrudes toward the outer surface of the step portion 21142 to support the lower end of the pushed portion 21141, thereby to prevent the pushed portion 21141 from being displaced.

[0451] When the cap 21180 and the elongate main body 21110 are coupled to each other, the fastening rib 21185 extending from the cap 21180 contacts the actuation mechanism 21140. Specifically, below the pushed portion 21141, the rounded portion at the distal end of the fastening rib 21185 contacts the outer surface of the step portion 21142. The fastening rib 21185 occupies a space between the lower end of the pushed portion 21141 and the top face of the elongate main body 21110 to prevent the pushed portion 21141 from moving in the downward direction. Thus, while the cap 21180 and the elongate main body 21110 are coupled to each other, the position of the actuation mechanism 21140 is fixed. This can prevent the cosmetic fluid in the elongate main body 21110 from accidentally flowing out through the distal cosmetic-fluid outlet structure 21171.

[0452] In one embodiment, a groove and a protrusion, which are engaged with each other, may be formed at a specific position of the inner surface of the cap 21180 and a corresponding position of an inner surface of the elongate main body 21110, respectively. As a result, the fastening between the cap 21180 and the elongate main body 21110 may be made more rigid.

[0453] FIG. 36 is a perspective view illustrating of a cosmetic-fluid dispenser in accordance with one embodiment. FIG. 37 is a perspective view illustrating a state where a cap is separated from a man body in the cosmetic-fluid dispenser in FIG. 36. FIG. 38 is a cross-sectional view of the cosmetic-fluid dispenser in FIG. 37. FIG. 39 is an exploded perspective view of the cosmetic-fluid dispenser FIG. 36. FIG. 40 is a cross-sectional view of a front portion of the elongate main body in FIG. 37. FIG. 41 is a schematic view for illustrating an actuation mechanism being subjected to an external force in the FIG. 40.

[0454] The cosmetic-fluid dispenser 3100 according to one embodiment of the present disclosure includes an actuation mechanism 3140 configured to allow selective dispensing of a cosmetic-fluid; an elongate main body 3110 having opposite first and second end portions; wherein the elongate main body has an inner space S therein defined to contain therein a cosmetic-fluid; a fluid-communication chamber 3131 defined in the first portion of the elongate main body, wherein the actuation mechanism 3140 selectively passes through the fluid-communication chamber 3131, wherein the actuation mechanism 3140 has a top portion exposed out of the fluid-communication chamber 3131 and has an open bottom portion; a vertical elastic member 3147 disposed on a bottom face on the fluid-communication chamber 3131 and at least partially inserted through the open bottom portion of the actuation mechanism 3140; a chamber body portion 3130 having the fluid-communication chamber 3131 defined therein, wherein the chamber body portion 3130 has an second fluid communication channel 3132a defined therein to allow fluid-communication between the inner space S and the fluid-communication chamber 3131; a distal cosmetic-fluid outlet structure 3171 fluid-communicating with the fluid-communication chamber 130 via a an first fluid communication channel 3112 defined in the chamber body portion 3130 and opposite to the second fluid communication channel 3132a; wherein the chamber body portion 3130 is a portion of the elongate main body 3110 and a top of the chamber body portion 3130 has a first concaved face portion 3131, and wherein an outer face of the top portion of the actuation mechanism is complementary to the first concaved face in a shape. The fluid-communication chamber 130 is configured to cooperate with the actuation mechanism 3140 to dispense a cosmetic-fluid out of the elongate main body.

[0455] The cosmetic-fluid dispenser 3100 includes an inner cap 3120 having a second concaved face portion 3121a corresponding to the first concaved face portion 3131 and being engaged with the end of the first portion 3115, which is the tip of the elongate main body 3110; and an outer cap 3180 having a receiving space 3181 defined therein for receiving the distal cosmetic-fluid outlet structure 3171 and being engaged with the inner cap 3120.

[0456] The inner cap 3120 and the outer cap 3180 are sequentially connected to the elongate main body 3110. At least a portion of the inner cap 3120 faces the outermost surfaces of the outer cap 3180 and the elongate main body 3110. The second concaved face portion 3121 defines a space with the outer cap 3180.

[0457] In this connection, the cosmetic-fluid stored in a storage space of the elongate main body 3110 has a sufficient viscosity to be discharged through the distal cosmetic-fluid outlet structure 3171. The cosmetic-fluid is not particularly limited.

[0458] When the outer cap 3180 is separated from the elongate main body 3110, the distal cosmetic-fluid outlet structure 3171 is exposed. Conversely, when the outer cap 3180 is combined with the elongate main body 3110, the distal cosmetic-fluid outlet structure 3171 is concealed within the cap 180. After the outer cap 3180 is separated from the elongate main body 3110, when an external force is applied to the actuation mechanism 3140, a certain amount of the cosmetic fluid flows out of the elongate main body 3110 through the distal cosmetic-fluid outlet structure 3171.

[0459] The outer cap 3180 may be provided to cover the distal cosmetic-fluid outlet structure 3171 through which the cosmetic fluid flows. The outer cap 3180 may be embodied in various forms. The outer cap 3180 may be made of the same or different material as the elongate main body 3110.

[0460] The elongate main body 3110 has the fluid storage space S defined therein in which cosmetic fluid is stored, the end of the first portion 3115 of the elongate main body 3110 to which the outer cap 3180 is fastened and an end of a second portion opposite the end of the first portion 3115. The long body extending between the ends of the first and second portions may have the storage space S defined therein. For example, the elongate main body 3110 may have various shapes such as a hexahedron and a cylindrical shape.

[0461] The actuation mechanism 3140 has a form corresponding substantially to a fluid-communication chamber 3131 into which the actuation mechanism 3140 is inserted. The first elastic member 3147 may be disposed on the bottom surface of the fluid-communication chamber 3131 below the actuation mechanism 3140. For example, the actuation mechanism 3140 is configured to be partially exposed to the outside from the fluid-communication chamber 3131. When the user presses the exposed portion to apply an external force, the actuation mechanism 3140 may move up and down in the fluid-communication chamber 3131 via the elastic force of the first elastic member 3147.

[0462] The inner cap 3120 is coupled to the distal end of the elongate main body 3110 and has a shape corresponding to the end of the first portion 3115 of the elongate main body 3110. The inner cap 3120 is press-fitted with a ring member 3160 on the distal end of the elongate main body 3110. The inner cap 3120 has a shape corresponding to the end of the first portion 3115 of the elongate main body 3110. The inner cap 3120 is fastened to the elongate main body 3110 to expose the distal cosmetic-fluid outlet structure 3171. The inner cap 3120 may be fastened and fixed to the outer cap 3180.

[0463] The inner cap 3120 may be configured such different members thereof may be connected to each other in a stepped manner so that the diameters of the inner cap 3120 decrease from one end to the other end. Among these members, the member adjacent to the ring member 3160 has the widest diameter, while the member inserted into the outer cap 3180 may have a narrowest diameter.

[0464] The inner cap 3120 may include a flange portion 3121 having an outer periphery corresponding to the outer periphery of the elongate main body 3110, a middle portion 3122 connected to the flange portion 3121 and having a smaller diameter than the flange portion 3121, and a distal portion 3123 connected to the middle portion 3122 and having a smaller diameter than the middle portion 3122. The distal portion 3123 has a hole through which the distal cosmetic-fluid outlet structure 3171 passes. The distal portion 3123 may be made of two sub-portions with different diameters such that the sub-portion defining the hole through which the distal cosmetic-fluid outlet structure 3171 passes has a smaller diameter.

[0465] A hole through which the actuation mechanism 3140 passes is formed in the flange portion 3121 of the inner cap 3120. A portion defining the hole therein through which the actuation mechanism 3140 protrudes out may define the second concaved face portion 3121a. Because the second concaved face portion 3121a is more concave, a person applying an external force to the actuation mechanism 3140 can easily press the actuation mechanism 3140. For example, when the actuation mechanism 3140 is pressed using a human finger, the second concaved face portion 3121a is provided in a shape corresponding to a human finger. There are no special restrictions on its shape as long as the actuation mechanism 3140 is easily pressurizable.

[0466] In other words, the cosmetic-fluid dispenser 3100 according to the present embodiment is characterized in that the elongate main body 3110 as a housing receiving the actuation mechanism 3140 and the inner cap 3120 have the first and second concaved face portions 3131 and 3121a respectively. Thus, a space may be reserved for pressurizing the actuation mechanism 3140. Thus, when the actuation mechanism 3140 is exposed out of the fluid-communication chamber 3131, the actuation mechanism 3140 may be prevented from protruding outwardly than the outermost surface of the elongate main body 3110 and the outer cap 3180.

[0467] As described above, in the cosmetic-fluid dispenser 3100 according to the present embodiment, the first and second concaved face portions 3131 and 3121a may be provided in the section in which the actuation mechanism 3140 to which an external force is applied is disposed. Accordingly, it is possible to prevent unnecessary protruding portions from protruding while suppressing increasing the overall volume of the cosmetic-fluid dispenser 3100. Accordingly, even in the cosmetic-fluid dispenser 3100 having a narrow width, the cosmetic liquid contained in the cosmetic-fluid dispenser 3100 may be easily discharged in a controlled amount.

[0468] The outer cap 3180 has a receiving space 3181 for receiving the distal cosmetic-fluid outlet structure 3171, and may engage with the inner cap 3120. A groove 3182 to be engaged with a protrusion on the inner cap 3120 may be provided in an inner face of the receiving space 3181. The outer circumference of the outer cap 3180 may correspond to the outer circumference of the body 3110 in a shape. For example, when the outer circumference of the body 3110 is cylindrical, the outer circumference of the outer cap 3180 may be cylindrical. When the body 3110 is a hexahedron, the outer cap 3180 may be a hexahedron.

[0469] An engaging protrusion 3124 is formed on the outer face of the middle portion 3122 of the inner cap 3120. The engaging protrusion 3124 is inserted into the engaging groove 3182 of the outer cap 3180 so that the outer cap 3180 is stably engaged with the body 3110. In this state, the outer cap 3180 can protect the distal cosmetic-fluid outlet structure 3171 and suppress contamination of the distal cosmetic-fluid outlet structure 3171.

[0470] The middle portion 3122 and the distal portion 3123 of the inner cap 3120 are received in the receiving space 3181 of the outer cap 3180. The engaging protrusion 3124 provided on the middle portion 3122 may be engaged into the engaged groove 3182 of the outer cap 3180.

[0471] In the first portion of the elongate main body 3110, the chamber body portion 3130 may be defined. The chamber body portion 3130 has the fluid-communication chamber defined therein. The fluid-communication chamber is configured to control the cosmetic fluid to be discharged from the elongate main body 3110 to the outside through the distal cosmetic-fluid outlet structure 3171.

[0472] The chamber body portion 3130 may have the fluid-communication chamber 3131 defined in the chamber body portion 3130 and open at an upper end thereof and extending in a first direction perpendicular to the direction of the escape of cosmetic fluid from the elongate main body 3110. The chamber body portion 3130 has the first fluid communication channel 3112 defined therein at one side of the fluid-communication chamber 3131, wherein the first fluid communication channel 3112 communicates with the distal cosmetic-fluid outlet structure 3171 and extends in the second direction perpendicular to the first direction. The chamber body portion 3130 has the second fluid communication channel 3132a defined therein at the other side of the fluid-communication chamber 3131 and wherein the second fluid communication channel 3132a extends in a direction parallel to the second direction and communicates with the fluid storage space of the elongate main body 3110. There is a hollow cylindrical tube 3330 having a wider diameter than the second fluid communication channel 3132a. The tube 3330 protrudes from the outer face of the chamber body portion 3130 into the storage space S. A first opening 3361 opens at least a portion of the proximal end of the hollow cylindrical tube 3330 and communicates with the second fluid communication channel 3132a. A cover 3360 is fitted into the open distal end of the hollow cylindrical tube 3330 and has a second opening 3362 defined therein communicating with the storage space S. Closing/opening means 3350 is configured to reversibly open and close the second opening 3362 in the cover 3360. A closing/opening means stopper 3340 may be disposed within the cover 3360 to control movement of the closing/opening means 335.

[0473] For example, the fluid-communication chamber 3131 defined in the chamber body portion 3130 is configured to control the communicating of the fluid between the distal cosmetic-fluid outlet structure 3171 and the storage space for storing cosmetic fluid stored within the elongate main body 3110. By applying an external force to the actuation mechanism 3140 to insert the actuation mechanism 3140 into the fluid-communication chamber 3131, the amount of cosmetic fluid stored in the elongate main body 3110 to flow out through the distal cosmetic-fluid outlet structure 3171 may be controlled.

[0474] The chamber body portion 3130 has the fluid-communication chamber 3131 configured to extend vertically in a direction perpendicular to the longitudinal direction of the elongate main body 3110. In this connection, the first fluid communication channel 3112 communicating with the fluid-communication chamber 3131 and communicating with the distal cosmetic-fluid outlet structure 3171 may extend substantially at a middle level at one side of the fluid-communication chamber 3131. At the other side of the fluid-communication chamber 3131, that is, at the opposite side to the first fluid communication channel 3112, the second fluid communication channel 3132a communicating with the cosmetic fluid storage space of the elongate main body 3110 and being in fluid communication with the fluid-communication chamber 3131 may extend at a substantially middle level. Thus, the combination of the fluid-communication chamber 3131 and the fluid outlet and inlet channels 3112 and 3132a may form a substantially cross (+) shape.

[0475] The actuation mechanism 3140 may be inserted into the fluid-communication chamber 3131 of the chamber body portion 3130 from the top surface of the elongate main body 3110. By the up and down movement of the actuation mechanism 3140, the cosmetic fluid received in the fluid-communication chamber 3131 flows into the actuation mechanism 3140 through the lower opening of the actuation mechanism 3140, or the fluid may flow from the storage space S in the elongate main body into the actuation mechanism 3140 through the second fluid communication channel 3132a. Subsequently, the fluid may be discharged to the outside through the first fluid communication channel 3112.

[0476] The chamber body portion 3130 includes the hollow cylindrical tube 3330 having an inner space having a larger diameter than the second fluid communication channel 3132a; the closing/opening means stopper 3340, which is disposed within the hollow cylindrical tube 3330; the closing/opening means 3350 contacting the distal ends of the closing/opening means stopper 3340; and the cover 3360, which covers the distal end of the hollow cylindrical tube 3330 and is fitted therein and defines, at one end and the other end, the first and second openings 3361 and 3362, respectively, wherein the portion of the cover 226 facing the closing/opening means 3350 have a truncated cone shape.

[0477] The inner periphery of the proximal end of the hollow cylindrical tube 3330 has a larger diameter than the diameter of the second fluid communication channel 3132a to surround the second fluid communication channel 3132a. The cover 3360 is configured as follows: one end thereof defining the first opening 3361 is inserted into the hollow cylindrical tube 3330, while the other end defining the second opening 3362 is disposed outside the hollow cylindrical tube 3330 and the inner face of the second opening 3362 may be tapered. Also, the closing/opening means stopper 3340 may include one or more ribs protruding inwards from the inner face of the cover 3360.

[0478] The closing/opening means stopper 3340 may be provided in various forms such as an elastic member such as a spring or a rod. The closing/opening means stopper 3340 may protrude from the inner face of the cover 3360 in the form of a rib to limit the position of the closing/opening means 3350.

[0479] The closing/opening means 3350 is disposed adjacent a distal end defining the second opening 3362 defined in the cover 3360. The closing/opening means 3350 may be restricted within the space defined by the closing/opening means stopper 3340. For example, the closing/opening means stopper 3340 may have a semicircular shape, and, three closing/opening means stopper 3340 may be spaced apart from each other at equal intervals on and along the inner face of the cover 3360.

[0480] The hollow cylindrical tube 3330 has a groove or protrusion 3331, and the cover 3360 has the protrusion or groove 3363 to be engaged with the groove or protrusion 3331. Thus, the cover 3360 may be fixed in close contact with the hollow cylindrical tube 3330. The inner space of the hollow cylindrical tube 3330 may be configured to fluid-communicate with the second fluid communication channel 3132a and to fluid-communicate with the second opening 3362 of the cover 3360.

[0481] At the first position of the closing/opening means 3340 and the closing/opening means 3350, the second opening 3362 of the cover 3360 is closed to limit the movement of the cosmetic fluid through the second fluid communication channel 3132a. At the second position of the closing/opening means 3340 and the closing/opening means 3350, the second opening 3362 is opened to allow movement of the cosmetic fluid through the second fluid communication channel 3132a.

[0482] The closing/opening means 3350 is in contact with the distal end of the closing/opening means stopper 3340 and is configured in a spherical shape. By an external force generated by the volume change of the cosmetic fluid via the up and down movement of the actuation mechanism 3140, the second opening 3362 of the cover 3360 may be reversibly opened and closed. The hollow cylindrical tube 3330 surrounds the communication channel 3132a such that the inner diameter t1 of the hollow cylindrical tube 3330 is larger than the inner diameter of the second fluid communication channel 3132a. Thus, the closing/opening means stopper 3340 disposed in the hollow cylindrical tube 3330 mat be retained within the hollow cylindrical tube 3330 without departing therefrom into the second fluid communication channel 3132a.

[0483] Alternatively, the closing/opening means stopper 3340 may further include a spring formed inside the cover 3360. The spring may be disposed within the cover 3360 to position the closing/opening means 3350 toward the distal end of the closing/opening means stopper 3340. The spring may elastically move left and right by the up and down movement of the actuation mechanism 3140 to control opening and closing of the second opening 3362 by the closing/opening means 3350.

[0484] A groove or protrusion 3331 is formed in or on the outer ace of the hollow cylindrical tube 3330, while a protrusion or groove 3363, which is engaged with the groove or protrusion 3331, is formed on or in the inner face of the cover 3360, such that the cover 3360 may be fixed in close contact with the hollow cylindrical tube 3330. The inner space of the hollow cylindrical tube 3330 is in fluid communication with the second fluid communication channel 3132a and in fluid communication with the second opening 3362 of the cover 3360 to provide cosmetic fluid-communication between the interior space S of the elongate main body 3110 and the fluid communication chamber 3131.

[0485] For example, the groove or protrusion 3331 and the protrusion or groove 3362 may be fastened together by fitting. Alternatively, the fastening method between the groove or protrusion 3331 and the protrusion or groove 3362 may be replaced by a screw connection between the screw thread and the screw groove. The coupling method between the groove or protrusion 3331 and the protrusion or groove 3362 may be variously modified or replaced as long as the cover 3360 may be closely fixed to the hollow cylindrical tube 3330 via such coupling method. The present disclosure is not limited to the coupling method between the groove or protrusion 3331 and the protrusion or groove 3362.

[0486] When the external force applied to the actuation mechanism 3140 is released, the cosmetic fluid having the same volume as the cosmetic fluid of the first volume of the cosmetic fluid stored in the first storage sub-space s1 passes through the hollow cylindrical tube 3330 and the second fluid communication channel 3132a into the fluid-communication chamber 3131, and, thus, the volume of the first cosmetic-fluid storage sub-space s1 is reduced by the first volume, and the volume of the second inner sub-space s2 is increased by the volume of the first volume.

[0487] In order for the cosmetic fluid to move from the first inner sub-space S1 of the elongate fluid-supply tube 3150 into the fluid communication chamber 3131 through the fluid-inlet hole 132a, only the cosmetic-fluid should be present in the first inner sub-space S1. Therefore, since the fluid of the first volume has been emitted from the first inner sub-space S1, the volume of the first inner sub-space S1 must be variable to remove air creation therein.

[0488] To this end, the cosmetic-fluid dispenser 3100 according to the present disclosure comprises the compressing member 3190. The compressing member 3190 may define the first inner sub-space S1 and prevent the inflow of air into the sub-space s1.

[0489] The compressing member 3190 may be displaced in a sliding manner along an inner face of the elongate fluid-supply tube 3150. This displacement is based on the volume change of the sub-space s1 due to the outflow of the cosmetic fluid from the first inner sub-space S1. Specifically, since there is only the cosmetic-fluid in the first inner sub-space S1, the empty space in the sub-space s1, which occurs in response to the outflow of the cosmetic-fluid, must be filled with air or an external substance. In this regard, the compressing member 3190 prevents inflow of the external air or material into the first inner sub-space S1, so that the inner volume of the first inner sub-space S1 is reduced to remove the empty space, thereby to enable the cosmetic-fluid outflow therefrom. The compressing member 3190 divides the inner space of the elongate fluid-supply tube 3150 into the first inner sub-space S1 and the second inner sub-space S2. The first inner sub-space S1 is formed between the compressing member 3190 and the fluid-communication chamber 3131, and the cosmetic-fluid is stored in the first inner sub-space. When the external force applied to the actuation mechanism 3140 is released, the first volume of cosmetic-fluid from the cosmetic-fluid stored in the first inner sub-space S1 passes through the second fluid-communication channel 3132a into the chamber 3131. At the same time, the compressing member 3190 is displaced along the inner face of the elongate fluid-supply tube 3150 such that the volume of the first inner sub-space is reduced by the first volume.

[0490] The second inner sub-space S2 is formed between the compressing member 3190 and the sealing cap 3153 defining the rear end of the elongate fluid-supply tube 3150. When the volume of the first inner sub-space S1 is reduced by the first volume, the volume of the second inner sub-space S2 is expanded by the first volume. In this connection, the sealing cap 3153 has an air-communication hole 3152 defined therein, which allows air-communication between the second inner sub-space S2 and an exterior space of the cosmetic-fluid dispenser 3100. The air-communication hole 3152 serves as a channel through which, when the second inner sub-space S2 is expanded by the first volume, the outside air of the same volume as the first volume flows into the second inner sub-space S2.

[0491] The elongate fluid-supply tube 3150 is detachably inserted into the inner space of the elongate main body 3110. The front end of the elongate fluid-supply tube 3150 is open and the rear end is closed by the sealing cap 3153. The elongate fluid-supply tube 3150 is cylindrical and hollow. The interior space of the elongate fluid-supply tube 3150 is divided into the first inner sub-space s1 and the second inner sub-space s2 by the compressing member 3190.

[0492] The compressing member 3190 may be in intimate contact with the inner face of the elongate fluid-supply tube 3150. The compressing member 3190 may include a compressing outer ring 3191 in intimate contact with the inner surface of the elongate fluid-supply tube 3150 and a fluid compressing portion 3192 occupying a circular cross-sectional space within the compressing outer ring 3191. The fluid compressing portion 3192 is vertically coupled to the compressing outer ring 3191. The central portion of the fluid compressing portion 3192 is aligned with the air-communication hole 3152 and has a convexly stepped portion toward the air-communication hole 3152. A cavity 3193 is defined in the stepped portion, and the hollow cylindrical portion 3330 may be received in the cavity 3193.

[0493] In order that the cosmetic fluid in the cosmetic elongate fluid-supply tube 3150 flows out, the compressing member 3190 progressively moves toward the front end of the elongate main body 3110 along the inner surface of the cosmetic elongate fluid-supply tube 3150. At this time, due to the configuration that the compressing member 3190 includes the cavity 3193, the compressing member 3160 may be configured to approach the chamber body portion 3130 side of the elongate main body 3110 without physical limitation. Accordingly, the cosmetic fluid contained in the first cosmetic-fluid storage sub-space s1 may be discharged to the outside without remaining in the elongate main body 3110, specifically, the cosmetic elongate fluid-supply tube 3150.

[0494] An O-ring 3154 is provided on the outer surface of the front end of the cosmetic elongate fluid-supply tube 3150, while an annular groove 3119 into which the O-ring 3154 is seated is defined in the inner face of the elongate main body 3110. In this way, the cosmetic elongate fluid-supply tube 3150 and the elongate main body 3110 may be tightly coupled to each other. When the cosmetic elongate fluid-supply tube 3150 is inserted into the elongate main body 3110, the O-ring 3153 may be fitted and fixedly secured in the groove 3119 defined in the elongate main body 3110.

[0495] The rear end of the cosmetic elongate fluid-supply tube 3150 may be inserted into the elongate main body 3110. The rear end of the cosmetic elongate fluid-supply tube 3150 may define a distal end portion of the elongate main body 3110. For example, the rear end portion of the cosmetic elongate fluid-supply tube 3150 is formed in a stepped shape and is fixedly inserted into the elongate main body 3110. The cosmetic elongate fluid-supply tube 3150 completely inserted into the elongate main body 3110 may be integral with the elongate main body 3110 via the rear sealing cap 3153 while the cosmetic elongate fluid-supply tube 3150 may not protrude outside the elongate main body 3110.

[0496] The distal cosmetic-fluid outlet structure 3171 has a distal end portion having an fluid discharging hole 3171a formed in its downstream region for discharging the cosmetic-fluid. The fluid discharging hole 3171a is out of the inner cap 3120. The distal cosmetic-fluid outlet structure 3171 has an inserted portion 1171b formed in the upstream region thereof and inserted into a distal end of the first fluid communication channel 3112.

[0497] When the proximal portion 3171b is inserted into the inner cap to communicate with the distal end of the first fluid communication channel 3112, a spacing Q is defined between the outer surface of the proximal portion 3171b and the inner surface of the first fluid communication channel 3112. Further, the proximal portion 3171b has a first fluid-communication space V1 defined therein in communication with the fluid discharging hole 3171a. More specifically, the first inserted portion 3171c of the inserted portion may have the first fluid-communication space V1 defined therein in communication with the fluid discharging hole 3171a.

[0498] The first inserted portion 3171c of the inserted portion has a first hole H1 defined therein for realizing fluid communication between the first fluid-communication space V1 and the spacing Q. The second inserted portion 3171d thereof has a second fluid-communication space V2 defined therein in communication with the fluid-communication chamber 3131, and has a second hole H2 defined therein to realize fluid-communication between the second fluid-communication space V2 and the spacing Q. A closing/opening means 3173 is configured to surround the second hole H2 to open or close the second hole H2 to control the movement of the cosmetic fluid through the second hole H2.

[0499] When the external force is applied to the actuation mechanism 3140, the closing/opening means 3173 is elastically deformed or displaced by the pressure resulting from the cosmetic fluid moving from the chamber to the distal end of the first fluid communication channel 3112. As a result, the second hole H2 is opened. When the pressure is weakened, the closing/opening means 3173 may be restored or returned by the restoring force due to the elastic deformation or displacement to close the second hole H2.

[0500] FIG. 43 is a perspective view of an actuation mechanism and first elastic member of FIG. 42. FIG. 44 is a perspective view of an actuation mechanism and first elastic member according to another embodiment of the present disclosure.

[0501] Referring to FIG. 43, the actuation mechanism 3140 includes the following components: a hollow piston portion 3141 being formed in a cylindrical shape to be inserted into the fluid-communication chamber 3131, wherein the hollow piston portion 3141 has a bottom inlet hole 3141a defined in a bottom portion thereof, and the hollow piston portion 3141 has a fluid receiving space defined therein; a head support portion 3142 extending upward from the hollow piston portion 3141 and having an outer diameter smaller than an outer diameter of the hollow piston portion 3141 and being formed in a cylindrical shape and having a hole 3142a defined in a top portion thereof; a head including a pressed portion to which an external force is applied and which is exposed out of the fluid-communication chamber 3131 and including an inserted rib 3146 which extends from a bottom of the pressed portion 3145 and is inserted into the hole 3142a; and first and second sealing rings 3148 and 3149 spaced apart from each other in a vertical direction and disposed around an outer surface of the hollow piston portion 3141.

[0502] The hollow piston portion 3141 has first and second lateral through-holes 3144 defined therein which penetrate through two opposite lateral points of the hollow piston portion 3141 respectively and communicate with the bottom receiving hole 3141a and the inner receiving space of the hollow piston portion 3141.

[0503] The first sealing ring 3148 surrounds the lower portion of the outer periphery of the hollow piston portion 3141, while the second sealing ring 3149 surrounds the upper portion of the outer periphery of the hollow piston portion 3141. All of the first and second lateral through-holes 3144 are defined between the first and second sealing rings 3148, 3149 in a vertical direction. An imaginary line between the first and second lateral through-holes 3144 meets the center of the circular cross section of the hollow piston portion 314.

[0504] A first fluid communication channel 3112 extends in the second direction perpendicular to the first direction at one side of the fluid-communication chamber 3131 and in the chamber body portion 3130. The first fluid communication channel 3112 communicates with one of the first and second lateral through-holes 3144 and the distal cosmetic-fluid outlet structure 3171 that externally flows the cosmetic fluid.

[0505] A second fluid communication channel 3132a extends in the second direction in the chamber body portion and at the other side of the fluid-communication chamber 3131. The second fluid communication channel 3132a communicates with the other of the first and second lateral through-holes 3144 and the cosmetic-fluid storage space of the elongate main body 3110.

[0506] When an external force is applied to the actuation mechanism 3140, the first elastic member 3147 is compressed such that at least a portion of the pressed portion 3145 is inserted into the fluid-communication chamber 3131 and the cosmetic fluid contained within the hollow piston portion 3141 flow through one of the first and second lateral through-holes 3144 and then through the first fluid communication channel 3112. At this time, the first fluid communication channel 3112 and the second fluid communication channel 3132a are positioned between the first and the second sealing rings 3148 and 3149 in terms of the height level.

[0507] When the external force applied to the actuation mechanism 3140 is released, the first elastic member 3147 is restored or returned, the pressed portion 3145 protrudes outside the fluid-communication chamber 3131, and, cosmetic fluid may flow into the hollow piston portion 3141 from the first storage sub-space s1 of the fluid supply tube 3150 through the second fluid communication channel 3132a.

[0508] When the actuation mechanism 3140 is inserted into or withdrawn from the fluid-communication chamber 3131, the first sealing ring 3148 may slide along the inner circumferential surface of the fluid-communication chamber 3131. In addition, when the actuation mechanism 3140 is inserted into or withdrawn from the fluid-communication chamber 3131, the second sealing ring 3149 may slide along the inner circumferential surface of the fluid-communication chamber 3131. In particular, when the actuation mechanism 3140 is withdrawn from the fluid-communication chamber 3131, the second sealing ring 3149 prevents the cosmetic fluid contained in the fluid-communication chamber 3131 from flowing out of the fluid-communication chamber 3131. The first and second sealing rings 3148 and 3149 are spaced apart from each other in the vertical direction, thereby preventing air from flowing into the fluid-communication chamber 3131.

[0509] The pair of actuation mechanisms 3140 may be configured in another embodiment. In this case, the pair of actuation mechanisms 3140 may include an upper actuation mechanism and a lower actuation mechanism. Liquid may be present between the upper and lower actuation mechanisms. In this case, the sealing rings associated with the upper actuation mechanism may be the first sealing ring 3148 and the second sealing ring 3149. Meanwhile, the lower actuation mechanism may include the third sealing ring and the fourth sealing ring. In this regard, when the lower actuation mechanism 3140 is inserted into or withdrawn from the fluid-communication chamber 3131, the third sealing ring may slide along the inner circumferential surface of the fluid-communication chamber 3131. In addition, when the lower actuation mechanism 3140 is inserted into or withdrawn from the fluid-communication chamber 3131, the fourth sealing ring may slide along the inner circumferential surface of the fluid-communication chamber 3131. In particular, when the lower actuation mechanism 3140 is withdrawn from the fluid-communication chamber 3131, the fourth sealing ring prevents the cosmetic fluid contained in the fluid-communication chamber 3131 from flowing out of the fluid-communication chamber 3131. The third and fourth sealing rings are spaced apart from each other in the vertical direction, thereby preventing air from flowing into the fluid-communication chamber 3131.

[0510] In another embodiment, the first sealing ring 3148 may be configured to be adjacent to the top side of the actuation mechanism 3140, while the second sealing ring 3149 may be configured to be adjacent to the bottom side of the actuation mechanism 3140. The first and second sealing rings 3148 and 3149 may be seated in first annular groove and the second annular groove which may be defined around the actuation mechanism 3140 at the height levels corresponding to the height levels where the first and the second sealing rings 3148 and 3149 are disposed respectively. The first annular groove and the second annular groove may shape-correspond to the first and the second sealing rings 3148 and 3149 respectively.

[0511] While the first and second sealing rings 3148 and 3149 are in close contact with the inner wall of the fluid-communication chamber 3131, the first and second sealing rings 3148 and 3149 may move along the inner wall of the fluid-communication chamber 3131. Each of the first and second sealing rings 3148, 3149 may be embodied, for example, as a resilient O-ring or a rubber packing. The present disclosure is not limited thereto. The first and second sealing rings 3148 and 3149 may slide along the inner wall of the fluid-communication chamber 3131 while bearing against and pressing the inner wall of the fluid-communication chamber 3131.

[0512] In this case, the space below the second sealing ring 3149 of the actuation mechanism 3140 inside the fluid-communication chamber 3131 is sealed by the second sealing ring 3149. Thereby, the pressure of the cosmetic fluid flowing from the fluid-communication chamber 3131 through the first fluid communication channel 3112 may be increased.

[0513] The second sealing ring 3149 prevents the loss of the cosmetic fluid that, otherwise may flow through the fine flow gaps defined in the inner wall of the fluid-communication chamber 3131. Thereby, the outflow of the cosmetic fluid from the fluid-communication chamber 3131 through the first fluid communication channel 3112 may reliably realized. Compared with the absence of the second sealing ring 3147, the cosmetic fluid out-flow can be realized with stronger pressure via the second sealing ring 3149.

[0514] When an external force is applied to the actuation mechanism 3140, the pressure of the cosmetic fluid in the fluid-communication chamber 3131 rises, thereby limiting the amount of cosmetic fluid flowing through the second fluid communication channel 3132a into the fluid-communication chamber 3131. At the same time, the cosmetic fluid is discharged through the first fluid communication channel 3112. On the contrary, when an external force applied to the actuation mechanism 3140 is released, the pressure of the cosmetic fluid in the fluid-communication chamber 3131 decreases, thereby preventing the discharge of the fluid through the first fluid communication channel 3112, and at the same time, the fluid may flow from the fluid supply tube 3150 through the second fluid communication channel 3132a into the fluid-communication chamber 3131. Thereby, the cosmetic fluid contained in the fluid-communication chamber 3131 may be maintained at a certain amount.

[0515] The first elastic member 3147 is configured to have a smaller diameter than the diameter of the bottom inlet hole 3141a so that at least a portion of the first elastic member 3147 can be inserted through the bottom inlet hole 3141a into the hollow piston portion 3141. The remaining portion of the first elastic member 3147 may be positioned below the actuation mechanism 3140 and may provide an elastic force to the actuation mechanism 3140. The actuation mechanism 3140 may be spaced from the inner wall of the fluid-communication chamber via the first and second sealing rings 3148, 3149.

[0516] In an alternative, with reference to FIG. 44, the actuation mechanism in the region between the first and the second sealing rings 3148 and 3149 may be concaved inwards. In the actuation mechanism according to this embodiment, since the side face 3141' between the first and the second sealing rings 3148, 3149 is configured to be concave inward, the space between the inner wall of the fluid-communication chamber and the outer wall of the actuation mechanism may be enlarged between the first and second sealing rings 3148 and 3149. Thus, the cosmetic fluid can easily flow into the fluid-communication chamber 3131 from the fluid supply tube through one of the first and second lateral through-holes 3144 located between the first and second sealing rings 3148, 3149 without any restriction about the viscosity of the cosmetic fluid. Further, the cosmetic fluid can easily be discharged into the first fluid communication channel 3113 through the other of the first and second lateral through-holes 3144 between the first and second sealing rings 3148, 3149 without any restriction about the viscosity of the cosmetic fluid.

[0517] FIG. 45 is a view schematically showing the actuation mechanism to which an external force is applied according to another embodiment of the present disclosure. FIG. 46 is a schematic representation of the external force applied to the actuation mechanism in FIG. 45. FIG. 47 is a perspective view of the actuation mechanism and first elastic member of FIG. 46. FIG. 48 is a perspective view of the actuation mechanism and first elastic member according to still another embodiment of the present disclosure.

[0518] The actuation mechanism 3140 can reversibly move by elastic deformation of the first elastic member 3147. When an external force is applied to the actuation mechanism 3140, a first volume of cosmetic fluid contained in the fluid-communication chamber 3131 flows out through the first fluid communication channel 3112 to the distal cosmetic-fluid outlet structure 3170. When the external force applied to the actuation mechanism 3140 is released,

[0519] A volume of cosmetic fluid corresponding to the cosmetic fluid of the first volume exiting the distal cosmetic-fluid outlet structure 3171 flows from the cosmetic-fluid storage space of the fluid supply tube 3150, through the second fluid communication channel 3132a, and is introduced into the communication chamber 3131.

[0520] When an external force is applied to the actuation mechanism 3140, the actuation mechanism 3140 is inserted into the fluid-communication chamber 3131 so that a first volume of the cosmetic fluid contained in the fluid-communication chamber 3131 passes through the first fluid communication channel 3112 and is discharged to the outside through the distal cosmetic-fluid outlet structure 3170. When the external force applied to the actuation mechanism 3140 is released, the actuation mechanism 3140 is separated from the bottom of the fluid-communication chamber 3131 by the restoring force of the first elastic member 3147 of the actuation mechanism 3140, the space for accommodating the cosmetic fluid in the fluid-communication chamber 3131 increases. Thus, the fluid space within the fluid-communication chamber 3131 may be filled with a cosmetic fluid at an amount that reversibly changes due to movement of the actuation mechanism 3140 within the fluid-communication chamber 3131. For example, for this reversible change, in the actuation mechanism 3140, the bottom inlet hole 3141a and the first and second lateral through-holes 3144 can communicate with each other.

[0521] A cosmetic fluid of the same volume as the first volume cosmetic fluid exiting the distal cosmetic-fluid outlet structure 3171 is transferred from the cosmetic-fluid storage space S of the elongate main body 3110 through the second fluid communication channel 3132a to the fluid-communication can be introduced into the chamber 3131.

[0522] The space in the fluid-communication chamber 3131 defined in the chamber body portion 3130 is reduced by the actuation mechanism 3140 that has downwardly moved within the fluid-communication chamber 3131 by an external force applied to the actuation mechanism 3140. Thereby, an amount corresponding to the first volume of the cosmetic fluid received in the fluid-communication chamber 3131 flows out through the first fluid communication channel 3112 to the distal cosmetic-fluid outlet structure 3171. In addition, when the external force applied to the actuation mechanism 3140 is released, the actuation mechanism 3140 is moved out of the fluid-communication chamber 3131 so that the fluid-communication chamber 3131 in the chamber body portion 3130 is expanded by the first volume. At this time, the cosmetic fluid stored in the elongate main body 3110 flows into the fluid-communication chamber 3131 through the second opening 3362 of the cover 3360 to fill the first volume of the expanded fluid-communication chamber 3131.

[0523] The distal cosmetic-fluid outlet structure 3171 includes a fluid discharging hole 3171a protruding outward from the inner cap 3120 and discharging the cosmetic fluid to the outside, and an inserted portion 3171b disposed inside the inner cap 3120 and inserted and coupled to the inside of the distal end of the first fluid communication channel 3112.

[0524] In this connection, the cross section of the fluid discharging hole 3171a may be formed in an elliptic shape so that the fluid discharging hole 3171a can be closely adhered to the skin. According to another embodiment of the present disclosure, a fluid discharging hole may be combined with a brush (not shown) for makeup. As a result, the cosmetic fluid drained through the fluid discharging hole may be absorbed via the user's skin through the soft brush. At this time, the user may feel the touch of a soft brush and use cosmetic fluid for skin beauty.

[0525] When the proximal portion 3171b is inserted into the inner cap to communicate with the distal end of the first fluid communication channel 3112, a spacing Q is defined between the outer surface of the proximal portion 3171b and the inner surface of the first fluid communication channel 3112. Further, the proximal portion 3171b has a first fluid-communication space V1 defined therein in communication with the fluid discharging hole 3171a. More specifically, the first inserted portion 3171c of the inserted portion may have the first fluid-communication space V1 defined therein in communication with the fluid discharging hole 3171a.

[0526] The first inserted portion 3171c of the inserted portion has a first hole H1 defined therein for realizing fluid communication between the first fluid-communication space V1 and the spacing Q. The second inserted portion 3171d thereof has a second fluid-communication space V2 defined therein in communication with the fluid-communication chamber 3131, and has a second hole H2 defined therein to realize fluid-communication between the second fluid-communication space V2 and the spacing Q. A closing/opening means 3173 is configured to surround the second hole H2 to open or close the second hole H2 to control the movement of the cosmetic fluid through the second hole H2.

[0527] When the external force is applied to the actuation mechanism 3140, the closing/opening means 3173 is elastically deformed or displaced by the pressure resulting from the cosmetic fluid moving from the chamber to the distal end of the first fluid communication channel 3112. As a result, the second hole H2 is opened. When the pressure is weakened, the closing/opening means 3173 may be restored or returned by the restoring force due to the elastic deformation or displacement to close the second hole H2.

[0528] The closing/opening means 3173 is implemented as a kind of thin rubber film and extends along and on the annular outer circumferential surface of the second inserted portion 3171d and is capable of opening and closing the second hole H2 by elastic deformation or displacement thereof.

[0529] The cosmetic-fluid storage space of the elongate fluid supply tube 3150 includes a reversibly volumetric first cosmetic-fluid storage sub-space S1 and a second cosmetic-fluid storage sub-space S2. The first cosmetic-fluid storage sub-space s1 is a space from which the cosmetic fluid is delivered to the fluid-communication chamber 3131. The second cosmetic-fluid storage sub-space s2 may receive air from the outside.

[0530] In an alternative, with reference to FIG. 48, the actuation mechanism in the region between the first and the second sealing rings 3148 and 3149 may be concaved inwards. In the actuation mechanism according to this embodiment, since the side face 3141' between the first and the second sealing rings 3148, 3149 is configured to be concave inward, the space between the inner wall of the fluid-communication chamber and the outer wall of the actuation mechanism may be enlarged between the first and second sealing rings 3148 and 3149. Thus, the cosmetic fluid can easily flow into the fluid-communication chamber 3131 from the fluid supply tube through one of the first and second lateral through-holes 3144 located between the first and second sealing rings 3148, 3149 without any restriction about the viscosity of the cosmetic fluid. Further, the cosmetic fluid can easily be discharged into the first fluid communication channel 3113 through the other of the first and second lateral through-holes 3144 between the first and second sealing rings 3148, 3149 without any restriction about the viscosity of the cosmetic fluid.

[0531] In the following, with reference to FIGS. 49 to 52, another embodiment of the present disclosure will be described. Except for the following, details similar to those described in the embodiment described in FIGS. 36 to 48 are omitted.

[0532] FIG. 49 is a cross-sectional view of the front portion of the elongate main body according to another embodiment of the present disclosure. FIG. 50 is a schematic representation of the external force applied to the actuation mechanism in FIG. 49. FIG. 51 is a cross-sectional view of the front portion of the elongate main body according to still further another embodiment of the present disclosure. FIG. 52 is a schematic representation of the external force applied to the actuation mechanism in FIG. 51.

[0533] With reference to FIG. 49 to FIG. 52, the cosmetic-fluid dispenser according to this embodiment includes a fluid-outlet adjustment ball 3475 disposed in a distal cosmetic-fluid outlet structure 3471 to control the amount of cosmetic fluid exiting through the first fluid communication channel 3112.

[0534] The distal cosmetic-fluid outlet structure 3171 includes the fluid discharging hole 3171a protruding outside the inner cap 3120 and discharging the cosmetic fluid to the outside, and an inserted portion disposed inside the inner cap 3120 and inserted into the distal end of the first fluid communication channel 3112. The inner diameter of the distal end of the first fluid communication channel 3112 may be greater than the inner diameter of the proximal end portion of the first fluid communication channel 3112 facing the actuation mechanism 3140.

[0535] The fluid-outlet adjustment ball 3475 is disposed toward the distal end side of the first fluid communication channel 3112 inside the proximal end of the proximal portion 3171b. The fluid-outlet adjustment ball 3475 has a diameter that is greater than the inner diameter of the rear portion of the first fluid communication channel 3112. In the downstream of the fluid-outlet adjustment ball 3475, the second elastic member 3473 is disposed.

[0536] When the external force is applied to the actuation mechanism 3140, the cosmetic fluid provided in the cosmetic-fluid storage space moves through the first fluid communication channel 3112 to press the fluid-outlet adjustment ball 3475, thereby compressing the elastic member 3473, the cosmetic fluid is discharged through the distal end of the first fluid communication channel 3112 and then through the distal cosmetic-fluid outlet structure 3171. When the cosmetic fluid depressurizes the fluid-outlet adjustment ball 3475, due to the restoring force of the second elastic member 3473, the fluid-outlet adjustment ball 3475 closes the rear end of the first fluid communication channel 3112.

[0537] In the cosmetic-fluid dispenser according to the present embodiment, the fluid-outlet adjustment ball 3475 is disposed in the distal cosmetic-fluid outlet structure 3471 so that the amount of cosmetic fluid that is the cosmetic that is discharged through the first fluid communication channel 3112 is controlled. When an external force is applied to the actuation mechanism 3140, the fluid-outlet adjustment ball 3475, due to the pressure by the cosmetic fluid flowing toward the distal end of the first fluid communication channel 3112, is moved in the direction toward the fluid outlet structure 3171, that is, in the third direction. When the pressure is weakened, the fluid-outlet adjustment ball 3475 is moved by the second elastic member 3473 in a fourth direction opposite to the third direction so that the opening 3431b of the distal end of the first fluid communication channel 3112 may be closed.

[0538] For example, the cosmetic-fluid dispenser according to the present embodiment includes, the spherical first fluid-outlet adjustment ball 3475 and the spherical second closing/opening means 3350 around the actuation mechanism 3140, that it, in the distal cosmetic-fluid outlet structure 3171 for discharging the cosmetic fluid to the outside, and the hollow cylindrical tube 3330 receiving the cosmetic fluid from the first cosmetic-fluid storage space S1 of the fluid supply tube 3150.

[0539] Below the actuation mechanism 3140, the first elastic member 3147, 3147a may be constructed. The first elastic members 3147 and 3147a may extend upward from the bottom of the fluid communication chamber 3131 and have a smaller diameter than the bottom inlet hole 3141a. This is the case in FIG. 49 and FIG. 50. Alternatively, the fluid communication chamber 3131 may have a larger diameter than the bottom inlet hole 3141a. This is the case in FIG. 51 and FIG. 52.

[0540] As in FIG. 49 and FIG. 50, at least a portion of the first elastic member 3147 may be inserted into the bottom inlet hole of the actuation mechanism 3140, if the diameter of the first elastic member 3147 is small, As in FIG. 51 and FIG. 52, the first elastic member 3147a may be blocked by and contact the bottom surface of the actuation mechanism 3140 when the diameter of the first elastic member 3147a is large.

[0541] As shown in FIG. 49 and FIG. 51, when the external force is released such that the pressed portion 3113 of the actuation mechanism 3140 moves upward, the second elastic member 3473 is moved in the fourth direction and is restored. Then, the fluid-outlet adjustment ball 3475 closes the distal cosmetic-fluid outlet structure 3171. At this time, the closing/opening means stopper 3340 is elastically biased in the third direction to move the closing/opening switcher 3350 away from the cover 3360 so that the cosmetic fluid provided within the first cosmetic-fluid storage space S1 of the elongate main body, that it, the fluid supply tube 3150 may be introduced into the fluid communication chamber 3131.

[0542] As shown in FIG. 50 and FIG. 52, when an external force is applied to the pressed portion and the actuation mechanism 3140 is pressed downward, the second elastic member 3473 in a response to receiving the external force is urged in a direction toward the outside of the distal cosmetic-fluid outlet structure 3171, that is, in the third direction, the first fluid communication channel 3112 may be opened via the fluid-outlet adjustment ball 3475. Thus, the cosmetic fluid and air are discharged to the outside through the distal cosmetic-fluid outlet structure 3471. At this time, the closing/opening means stopper 3340 presses the closing/opening means 3350 in the fourth direction such that the inflow of the cosmetic fluid from the fluid storage space in the elongate main body into the second fluid communication channel 3132a is restricted.

[0543] FIG. 53 is a perspective view of the cosmetic-fluid dispenser according to an embodiment of the present disclosure. FIG. 54 shows a state in which a cap is separated from an elongate main body in FIG. 53. FIG. 55 is a cross-sectional view of FIG. 54. FIG. 56 is an exploded perspective view of FIG. 53. FIG. 57 is a section view of the front portion of the elongate main body in the FIG. 55. FIG. 58 is a view schematically showing the actuation mechanism to which an external force is applied in the FIG. 57

[0544] The cosmetic-fluid dispenser 4100 according to one embodiment of the present disclosure includes an actuation mechanism 4140 configured to allow selective dispensing of a cosmetic-fluid; an elongate main body 4110 having opposite first and second end portions; wherein the elongate main body has an inner space S therein defined to contain therein a cosmetic-fluid; a fluid-communication chamber 4131 defined in the first portion of the elongate main body and extending in a vertical direction, wherein the actuation mechanism 4140 selectively passes through the fluid-communication chamber 4131, wherein the actuation mechanism 4140 has a top portion exposed out of the fluid-communication chamber 4131 and has an open bottom portion 4141a; a vertical elastic member 4147 disposed along and around the upper portion of the actuation mechanism 4140; a chamber body portion 4130 having the fluid-communication chamber 4131 defined therein, wherein the chamber body portion 4130 define a portion of the main body, and has an second fluid communication channel 4132a defined therein to allow fluid-communication between the inner space S and the fluid-communication chamber 4131; a distal cosmetic-fluid outlet structure 4171 fluid-communicating with the fluid-communication chamber 130 via a an first fluid communication channel 4112 defined in the chamber body portion 4130 and opposite to the second fluid communication channel 4132a; wherein the chamber body portion 4130 is a portion of the elongate main body 4110.

[0545] In addition, a top of the chamber body portion 4130 has a first concaved face portion 4131, and wherein an outer face of the top portion of the actuation mechanism is complementary to the first concaved face in a shape. The fluid-communication chamber 130 is configured to cooperate with the actuation mechanism 4140 to dispense a cosmetic-fluid out of the elongate main body.

[0546] The cosmetic-fluid dispenser 4100 includes an inner cap 4120 having a second concaved face portion 4121a corresponding to the first concaved face portion 4131 and being engaged with the end of the first portion 4115, which is the tip of the elongate main body 4110; and an outer cap 4180 having a receiving space 4181 defined therein for receiving the distal cosmetic-fluid outlet structure 4171 and being engaged with the inner cap 4120.

[0547] The inner cap 4120 and the outer cap 4180 are sequentially connected to the elongate main body 4110. At least a portion of the inner cap 4120 faces the outermost surfaces of the outer cap 4180 and the elongate main body 4110. The second concaved face portion 4121 defines a space with the outer cap 4180.

[0548] In this connection, the cosmetic-fluid stored in a storage space of the elongate main body 4110 has a sufficient viscosity to be discharged through the distal cosmetic-fluid outlet structure 4171. The cosmetic-fluid is not particularly limited.

[0549] When the outer cap 4180 is separated from the elongate main body 4110, the distal cosmetic-fluid outlet structure 4171 is exposed. Conversely, when the outer cap 4180 is combined with the elongate main body 4110, the distal cosmetic-fluid outlet structure 4171 is concealed within the cap 180. After the outer cap 4180 is separated from the elongate main body 4110, when an external force is applied to the actuation mechanism 4140, a certain amount of the cosmetic fluid flows out of the elongate main body 4110 through the distal cosmetic-fluid outlet structure 4171. The outer cap 4180 may be provided to cover the distal cosmetic-fluid outlet structure 4171 through which the cosmetic fluid flows. The outer cap 4180 may be embodied in various forms. The outer cap 4180 may be made of the same or different material as the elongate main body 4110.

[0550] The elongate main body 4110 has the fluid storage space S defined therein in which cosmetic fluid is stored, the end of the first portion 4115 of the elongate main body 4110 to which the outer cap 4180 is fastened and an end of a second portion opposite the end of the first portion 4115. The long body extending between the ends of the first and second portions may have the storage space S defined therein. For example, the elongate main body 4110 may have various shapes such as a hexahedron and a cylindrical shape.

[0551] The actuation mechanism 4140 has a form corresponding substantially to a fluid-communication chamber 4131 into which the actuation mechanism 4140 is inserted. The first elastic member 4147 may be disposed on the bottom surface of the fluid-communication chamber 4131 below the actuation mechanism 4140. For example, the actuation mechanism 4140 is configured to be partially exposed to the outside from the fluid-communication chamber 4131. When the user presses the exposed portion to apply an external force, the actuation mechanism 4140 may move up and down in the fluid-communication chamber 4131 via the elastic force of the first elastic member 4147.

[0552] The inner cap 4120 is coupled to the distal end of the elongate main body 4110 and has a shape corresponding to the end of the first portion 4115 of the elongate main body 4110. The inner cap 4120 is press-fitted with a ring member 4160 on the distal end of the elongate main body 4110. The inner cap 4120 has a shape corresponding to the end of the first portion 4115 of the elongate main body 4110. The inner cap 4120 is fastened to the elongate main body 4110 to expose the distal cosmetic-fluid outlet structure 4171. The inner cap 4120 may be fastened and fixed to the outer cap 4180.

[0553] The inner cap 4120 may be configured such different members thereof may be connected to each other in a stepped manner so that the diameters of the inner cap 4120 decrease from one end to the other end. Among these members, the member adjacent to the ring member 4160 has the widest diameter, while the member inserted into the outer cap 4180 may have a narrowest diameter.

[0554] The inner cap 4120 may include a flange portion 4121 having an outer periphery corresponding to the outer periphery of the elongate main body 4110, a middle portion 4122 connected to the flange portion 4121 and having a smaller diameter than the flange portion 4121, and a distal portion 4123 connected to the middle portion 4122 and having a smaller diameter than the middle portion 4122. The distal portion 4123 has a hole through which the distal cosmetic-fluid outlet structure 4171 passes. The distal portion 4123 may be made of two sub-portions with different diameters such that the sub-portion defining the hole through which the distal cosmetic-fluid outlet structure 4171 passes has a smaller diameter.

[0555] A hole through which the actuation mechanism 4140 passes is formed in the flange portion 4121 of the inner cap 4120. A portion defining the hole therein through which the actuation mechanism 4140 protrudes out may define the second concaved face portion 4121a. Because the second concaved face portion 4121a is more concave, a person applying an external force to the actuation mechanism 4140 can easily press the actuation mechanism 4140. For example, when the actuation mechanism 4140 is pressed using a human finger, the second concaved face portion 4121a is provided in a shape corresponding to a human finger. There are no special restrictions on its shape as long as the actuation mechanism 4140 is easily pressurizable.

[0556] In other words, the cosmetic-fluid dispenser 4100 according to the present embodiment is characterized in that the elongate main body 4110 as a housing receiving the actuation mechanism 4140 and the inner cap 4120 have the first and second concaved face portions 4131 and 4121a respectively. Thus, a space may be reserved for pressurizing the actuation mechanism 4140. Thus, when the actuation mechanism 4140 is exposed out of the fluid-communication chamber 4131, the actuation mechanism 4140 may be prevented from protruding outwardly than the outermost surface of the elongate main body 4110 and the outer cap 4180.

[0557] As described above, in the cosmetic-fluid dispenser 4100 according to the present embodiment, the first and second concaved face portions 4131 and 4121a may be provided in the section in which the actuation mechanism 4140 to which an external force is applied is disposed. Accordingly, it is possible to prevent unnecessary protruding portions from protruding while suppressing increasing the overall volume of the cosmetic-fluid dispenser 4100. Accordingly, even in the cosmetic-fluid dispenser 4100 having a narrow width, the cosmetic liquid contained in the cosmetic-fluid dispenser 4100 may be easily discharged in a controlled amount.

[0558] The outer cap 4180 has a receiving space 4181 for receiving the distal cosmetic-fluid outlet structure 4171, and may engage with the inner cap 4120. A groove 4182 to be engaged with a protrusion on the inner cap 4120 may be provided in an inner face of the receiving space 4181. The outer circumference of the outer cap 4180 may correspond to the outer circumference of the body 4110 in a shape. For example, when the outer circumference of the body 4110 is cylindrical, the outer circumference of the outer cap 4180 may be cylindrical. If the body 4110 is a hexahedron, the outer cap 4180 may be a hexahedron.

[0559] An engaging protrusion 4124 is formed on the outer face of the middle portion 4122 of the inner cap 4120. The engaging protrusion 4124 is inserted into the engaging groove 4182 of the outer cap 4180 so that the outer cap 4180 is stably engaged with the body 4110. In this state, the outer cap 4180 can protect the distal cosmetic-fluid outlet structure 4171 and suppress contamination of the distal cosmetic-fluid outlet structure 4171.

[0560] The middle portion 4122 and the distal portion 4123 of the inner cap 4120 are received in the receiving space 4181 of the outer cap 4180. The engaging protrusion 4124 provided on the middle portion 4122 may be engaged into the engaged groove 4182 of the outer cap 4180.

[0561] In the first portion of the elongate main body 4110, the chamber body portion 4130 may be defined. The chamber body portion 4130 has the fluid-communication chamber defined therein. The fluid-communication chamber is configured to control the cosmetic fluid to be discharged from the elongate main body 4110 to the outside through the distal cosmetic-fluid outlet structure 4171.

[0562] The chamber body portion 4130 may have the fluid-communication chamber 4131 defined in the chamber body portion 4130 and open at an upper end thereof and extending in a first direction perpendicular to the direction of the escape of cosmetic fluid from the elongate main body 4110. The chamber body portion 4130 has the first fluid communication channel 4112 defined therein at one side of the fluid-communication chamber 4131, wherein the first fluid communication channel 4112 communicates with the distal cosmetic-fluid outlet structure 4171 and extends in the second direction perpendicular to the first direction. The chamber body portion 4130 has the second fluid communication channel 4132a defined therein at the other side of the fluid-communication chamber 4131 and wherein the second fluid communication channel 4132a extends in a direction parallel to the second direction and communicates with the fluid storage space of the elongate main body 4110. There is a hollow cylindrical tube 4330 having a wider diameter than the second fluid communication channel 4132a. The tube 4330 protrudes from the outer face of the chamber body portion 4130 into the storage space S. A first opening 4361 opens at least a portion of the proximal end of the hollow cylindrical tube 4330 and communicates with the second fluid communication channel 4132a. A cover 4360 is fitted into the open distal end of the hollow cylindrical tube 4330 and has a second opening 4362 defined therein communicating with the storage space S. Closing/opening means 4350 is configured to reversibly open and close the second opening 4362 in the cover 4360. A closing/opening means stopper 4340 may be disposed within the cover 4360 to control movement of the closing/opening means 435.

[0563] For example, the fluid-communication chamber 4131 defined in the chamber body portion 4130 is configured to control the communicating of the fluid between the distal cosmetic-fluid outlet structure 4171 and the storage space for storing cosmetic fluid stored within the elongate main body 4110. By applying an external force to the actuation mechanism 4140 to insert the actuation mechanism 4140 into the fluid-communication chamber 4131, the amount of cosmetic fluid stored in the elongate main body 4110 to flow out through the distal cosmetic-fluid outlet structure 4171 may be controlled.

[0564] The chamber body portion 4130 has the fluid-communication chamber 4131 configured to extend vertically in a direction perpendicular to the longitudinal direction of the elongate main body 4110. In this connection, the first fluid communication channel 4112 communicating with the fluid-communication chamber 4131 and communicating with the distal cosmetic-fluid outlet structure 4171 may extend substantially at a middle level at one side of the fluid-communication chamber 4131. At the other side of the fluid-communication chamber 4131, that is, at the opposite side to the first fluid communication channel 4112, the second fluid communication channel 4132a communicating with the cosmetic fluid storage space of the elongate main body 4110 and being in fluid communication with the fluid-communication chamber 4131 may extend at a substantially middle level. Thus, the combination of the fluid-communication chamber 4131 and the fluid outlet and inlet channels 4112 and 4132a may form a substantially cross (+) shape.

[0565] The actuation mechanism 4140 may be inserted into the fluid-communication chamber 4131 of the chamber body portion 4130 from the top surface of the elongate main body 4110. By the up and down movement of the actuation mechanism 4140, the cosmetic fluid received in the fluid-communication chamber 4131 flows into the actuation mechanism 4140 through the lower opening of the actuation mechanism 4140, or the fluid may flow from the storage space S in the elongate main body into the actuation mechanism 4140 through the second fluid communication channel 4132a. Subsequently, the fluid may be discharged to the outside through the first fluid communication channel 4112.

[0566] The chamber body portion 4130 includes the hollow cylindrical tube 4330 having an inner space having a larger diameter than the second fluid communication channel 4132a; the closing/opening means stopper 4340, which is disposed within the hollow cylindrical tube 4330; the closing/opening means 4350 contacting the distal ends of the closing/opening means stopper 4340; and the cover 4360, which covers the distal end of the hollow cylindrical tube 4330 and is fitted therein and defines, at one end and the other end, the first and second openings 4361 and 4362, respectively, wherein the portion of the cover 226 facing the closing/opening means 4350 have a truncated cone shape.

[0567] The inner periphery of the proximal end of the hollow cylindrical tube 4330 has a larger diameter than the diameter of the second fluid communication channel 4132a to surround the second fluid communication channel 4132a. The cover 4360 is configured as follows: one end thereof defining the first opening 4361 is inserted into the hollow cylindrical tube 4330, while the other end defining the second opening 4362 is disposed outside the hollow cylindrical tube 4330 and the inner face of the second opening 4362 may be tapered. Also, the closing/opening means stopper 4340 may include one or more ribs protruding inwards from the inner face of the cover 4360.

[0568] The closing/opening means stopper 4340 may be provided in various forms such as an elastic member such as a spring or a rod. The closing/opening means stopper 4340 may protrude from the inner face of the cover 4360 in the form of a rib to limit the position of the closing/opening means 4350.

[0569] The closing/opening means 4350 is disposed adjacent a distal end defining the second opening 4362 defined in the cover 4360. The closing/opening means 4350 may be restricted within the space defined by the closing/opening means stopper 4340. For example, the closing/opening means stopper 4340 may have a semicircular shape, and, three closing/opening means stopper 4340 may be spaced apart from each other at equal intervals on and along the inner face of the cover 4360.

[0570] The hollow cylindrical tube 4330 has a groove or protrusion 4331, and the cover 4360 has the protrusion or groove 4363 to be engaged with the groove or protrusion 4331. Thus, the cover 4360 may be fixed in close contact with the hollow cylindrical tube 4330. The inner space of the hollow cylindrical tube 4330 may be configured to fluid-communicate with the second fluid communication channel 4132a and to fluid-communicate with the second opening 4362 of the cover 4360.

[0571] At the first position of the closing/opening means 4340 and the closing/opening means 4350, the second opening 4362 of the cover 4360 is closed to limit the movement of the cosmetic fluid through the second fluid communication channel 4132a. At the second position of the closing/opening means 4340 and the closing/opening means 4350, the second opening 4362 is opened to allow movement of the cosmetic fluid through the second fluid communication channel 4132a.

[0572] The closing/opening means 4350 is in contact with the distal end of the closing/opening means stopper 4340 and is configured in a spherical shape. By an external force generated by the volume change of the cosmetic fluid via the up and down movement of the actuation mechanism 4140, the second opening 4362 of the cover 4360 may be reversibly opened and closed. The hollow cylindrical tube 4330 surrounds the communication channel 4132a such that the inner diameter t1 of the hollow cylindrical tube 4330 is larger than the inner diameter of the second fluid communication channel 4132a. Thus, the closing/opening means stopper 4340 disposed in the hollow cylindrical tube 4330 mat be retained within the hollow cylindrical tube 4330 without departing therefrom into the second fluid communication channel 4132a.

[0573] Alternatively, the closing/opening means stopper 4340 may further include a spring formed inside the cover 4360. The spring may be disposed within the cover 4360 to position the closing/opening means 4350 toward the distal end of the closing/opening means stopper 4340. The spring may elastically move left and right by the up and down movement of the actuation mechanism 4140 to control opening and closing of the second opening 4362 by the closing/opening means 4350.

[0574] A groove or protrusion 4331 is formed in or on the outer ace of the hollow cylindrical tube 4330, while a protrusion or groove 4363, which is engaged with the groove or protrusion 4331, is formed on or in the inner face of the cover 4360, such that the cover 4360 may be fixed in close contact with the hollow cylindrical tube 4330. The inner space of the hollow cylindrical tube 4330 is in fluid communication with the second fluid communication channel 4132a and in fluid communication with the second opening 4362 of the cover 4360 to provide cosmetic fluid-communication between the interior space S of the elongate main body 4110 and the fluid communication chamber 4131.

[0575] For example, the groove or protrusion 4331 and the protrusion or groove 4362 may be fastened together by fitting. Alternatively, the fastening method between the groove or protrusion 4331 and the protrusion or groove 4362 may be replaced by a screw connection between the screw thread and the screw groove. The coupling method between the groove or protrusion 4331 and the protrusion or groove 4362 may be variously modified or replaced as long as the cover 4360 may be closely fixed to the hollow cylindrical tube 4330 via such coupling method. The present disclosure is not limited to the coupling method between the groove or protrusion 4331 and the protrusion or groove 4362.

[0576] When the external force applied to the actuation mechanism 4140 is released, the cosmetic fluid having the same volume as the cosmetic fluid of the first volume of the cosmetic fluid stored in the first storage sub-space s1 passes through the hollow cylindrical tube 4330 and the second fluid communication channel 4132a into the fluid-communication chamber 4131, and, thus, the volume of the first cosmetic-fluid storage sub-space s1 is reduced by the first volume, and the volume of the second inner sub-space s2 is increased by the volume of the first volume.

[0577] In order for the cosmetic fluid to move from the first inner sub-space S1 of the elongate fluid-supply tube 4150 into the fluid communication chamber 4131 through the fluid-inlet hole 132a, only the cosmetic-fluid should be present in the first inner sub-space S1. Therefore, since the fluid of the first volume has been emitted from the first inner sub-space S1, the volume of the first inner sub-space S1 must be variable to remove air creation therein.

[0578] To this end, the cosmetic-fluid dispenser 4100 according to the present disclosure comprises the compressing member 4190. The compressing member 4190 may define the first inner sub-space S1 and prevent the inflow of air into the sub-space s1.

[0579] The compressing member 4190 may be displaced in a sliding manner along an inner face of the elongate fluid-supply tube 4150. This displacement is based on the volume change of the sub-space s1 due to the outflow of the cosmetic fluid from the first inner sub-space S1. Specifically, since there is only the cosmetic-fluid in the first inner sub-space S1, the empty space in the sub-space s1, which occurs in response to the outflow of the cosmetic-fluid, must be filled with air or an external substance. In this regard, the compressing member 4190 prevents inflow of the external air or material into the first inner sub-space S1, so that the inner volume of the first inner sub-space S1 is reduced to remove the empty space, thereby to enable the cosmetic-fluid outflow therefrom. The compressing member 4190 divides the inner space of the elongate fluid-supply tube 4150 into the first inner sub-space S1 and the second inner sub-space S2. The first inner sub-space S1 is formed between the compressing member 4190 and the fluid-communication chamber 4131, and the cosmetic-fluid is stored in the first inner sub-space. When the external force applied to the actuation mechanism 4140 is released, the first volume of cosmetic-fluid from the cosmetic-fluid stored in the first inner sub-space S1 passes through the second fluid-communication channel 4132a into the chamber 4131. At the same time, the compressing member 4190 is displaced along the inner face of the elongate fluid-supply tube 4150 such that the volume of the first inner sub-space is reduced by the first volume.

[0580] The second inner sub-space S2 is formed between the compressing member 4190 and the sealing cap 4153 defining the rear end of the elongate fluid-supply tube 4150. When the volume of the first inner sub-space S1 is reduced by the first volume, the volume of the second inner sub-space S2 is expanded by the first volume. In this connection, the sealing cap 4153 has an air-communication hole 4152 defined therein, which allows air-communication between the second inner sub-space S2 and an exterior space of the cosmetic-fluid dispenser 4100. The air-communication hole 4152 serves as a channel through which, when the second inner sub-space S2 is expanded by the first volume, the outside air of the same volume as the first volume flows into the second inner sub-space S2.

[0581] The elongate fluid-supply tube 4150 is detachably inserted into the inner space of the elongate main body 4110. The front end of the elongate fluid-supply tube 4150 is open and the rear end is closed by the sealing cap 4153. The elongate fluid-supply tube 4150 is cylindrical and hollow. The interior space of the elongate fluid-supply tube 4150 is divided into the first inner sub-space s1 and the second inner sub-space s2 by the compressing member 4190.

[0582] The compressing member 4190 may be in intimate contact with the inner face of the elongate fluid-supply tube 4150. The compressing member 4190 may include a compressing outer ring 4191 in intimate contact with the inner surface of the elongate fluid-supply tube 4150 and a fluid compressing portion 4192 occupying a circular cross-sectional space within the compressing outer ring 4191. The fluid compressing portion 4192 is vertically coupled to the compressing outer ring 4191. The central portion of the fluid compressing portion 4192 is aligned with the air-communication hole 4152 and has a convexly stepped portion toward the air-communication hole 4152. A cavity 4193 is defined in the stepped portion, and the hollow cylindrical portion 4330 may be received in the cavity 4193.

[0583] In order that the cosmetic fluid in the cosmetic elongate fluid-supply tube 4150 flows out, the compressing member 4190 progressively moves toward the front end of the elongate main body 4110 along the inner surface of the cosmetic elongate fluid-supply tube 4150. At this time, due to the configuration that the compressing member 4190 includes the cavity 4193, the compressing member 4160 may be configured to approach the chamber body portion 4130 side of the elongate main body 4110 without physical limitation. Accordingly, the cosmetic fluid contained in the first cosmetic-fluid storage sub-space s1 may be discharged to the outside without remaining in the elongate main body 4110, specifically, the cosmetic elongate fluid-supply tube 4150.

[0584] An O-ring 4154 is provided on the outer surface of the front end of the cosmetic elongate fluid-supply tube 4150, while an annular groove 4119 into which the O-ring 4154 is seated is defined in the inner face of the elongate main body 4110. In this way, the cosmetic elongate fluid-supply tube 4150 and the elongate main body 4110 may be tightly coupled to each other. When the cosmetic elongate fluid-supply tube 4150 is inserted into the elongate main body 4110, the O-ring 4153 may be fitted and fixedly secured in the groove 4119 defined in the elongate main body 4110.

[0585] The rear end of the cosmetic elongate fluid-supply tube 4150 may be inserted into the elongate main body 4110. The rear end of the cosmetic elongate fluid-supply tube 4150 may define a distal end portion of the elongate main body 4110. For example, the rear end portion of the cosmetic elongate fluid-supply tube 4150 is formed in a stepped shape and is fixedly inserted into the elongate main body 4110. The cosmetic elongate fluid-supply tube 4150 completely inserted into the elongate main body 4110 may be integral with the elongate main body 4110 via the rear sealing cap 4153 while the cosmetic elongate fluid-supply tube 4150 may not protrude outside the elongate main body 4110.

[0586] The distal cosmetic-fluid outlet structure 4171 has a distal end portion having an fluid discharging hole 4171a formed in its downstream region for discharging the cosmetic-fluid. The fluid discharging hole 4171a is out of the inner cap 4120. The distal cosmetic-fluid outlet structure 4171 has an inserted portion 1171b formed in the upstream region thereof and inserted into a distal end of the first fluid communication channel 4112.

[0587] When the proximal portion 4171b is inserted into the inner cap to communicate with the distal end of the first fluid communication channel 4112, a spacing Q is defined between the outer surface of the proximal portion 4171b and the inner surface of the first fluid communication channel 4112. Further, the proximal portion 4171b has a first fluid-communication space V1 defined therein in communication with the fluid discharging hole 4171a. More specifically, the first inserted portion 4171c of the inserted portion may have the first fluid-communication space V1 defined therein in communication with the fluid discharging hole 4171a.

[0588] The first inserted portion 4171c of the inserted portion has a first hole H1 defined therein for realizing fluid communication between the first fluid-communication space V1 and the spacing Q. The second inserted portion 4171d thereof has a second fluid-communication space V2 defined therein in communication with the fluid-communication chamber 4131, and has a second hole H2 defined therein to realize fluid-communication between the second fluid-communication space V2 and the spacing Q. A closing/opening means 4173 is configured to surround the second hole H2 to open or close the second hole H2 to control the movement of the cosmetic fluid through the second hole H2.

[0589] When the external force is applied to the actuation mechanism 4140, the closing/opening means 4173 is elastically deformed or displaced by the pressure resulting from the cosmetic fluid moving from the chamber to the distal end of the first fluid communication channel 4112. As a result, the second hole H2 is opened. When the pressure is weakened, the closing/opening means 4173 may be restored or returned by the restoring force due to the elastic deformation or displacement to close the second hole H2.

[0590] Referring to FIG. 59, the actuation mechanism 4140 includes the following components: a hollow piston portion 4141 being formed in a cylindrical shape to be inserted into the fluid-communication chamber 4131, wherein the hollow piston portion 4141 has a bottom inlet hole 4141a defined in a bottom portion thereof, and the hollow piston portion 4141 has a fluid receiving space defined therein; a head support portion 4142 extending upward from the hollow piston portion 4141 and having an outer diameter smaller than an outer diameter of the hollow piston portion 4141 and being formed in a cylindrical shape and having a hole 4142a defined in a top portion thereof; a head including a pressed portion 4145 to which an external force is applied and which is exposed out of the fluid-communication chamber 4131 and including an inserted rib 4146a which extends from a bottom of the pressed portion 4145 and is inserted into the hole 4142a; and first and second sealing rings 4148 and 4149 spaced apart from each other in a vertical direction and disposed around an outer surface of the hollow piston portion 4141.

[0591] The actuation mechanism 4140 may include the pressed portion 4145 exposed to the outside of the fluid-communication chamber 4113 and a head support portion 4142 inserted into the fluid-communication chamber 4113. The pressed portion 4145 has a cross-sectional area larger than that of the fluid-communication chamber 4113 to facilitate the application of an external force such as a finger. The head support portion 4142 has a cross-sectional area smaller than that of the fluid-communication chamber 4113. Accordingly, the head support portion 4142 can be easily inserted into the fluid-communication chamber 4113 and the up-and-down movement thereof within the fluid-communication chamber 4113 can be easily performed. The pressed portion 4145 and the head support portion 4142 may be integrally formed. The present disclosure is not limited to this. In the present embodiment, the pressed portion 4145 and the head support portion 4142 are separate components from each other.

[0592] The pressed portion 4145 includes a cap-shaped portion 4145a, which is circular in cross section and open at the bottom, and is hollow has a blocked top. The portion 4145 has a pressed portion fixing rib 4145b, which protrudes outward along the rim of the bottom end of the portion 4145a and defines a lower opening of the cap-shaped portion 4145a and is fastened against the uppermost inner surface of the fluid-communication chamber 4113. The portion 4145 has an inserted rib 4146a protruding downward from the inner central position of the cap-shaped portion 4145a, and a first engaging protrusion 4146b protruding horizontally from the outer face of the inserted rib 4146a. The head support portion 4142 has a rib receiving hole 4142a through which the inserted rib 4146a is inserted, and a first engaged groove 4142 which is defined radially outward in the inner face of the rib receiving hole 4142a and is engaged with the first engaging protrusion 4146b. The bottom of the head support portion 4142 is coupled to the top of the lower hollow piston portion 4141. The lower hollow piston portion 4141 is hollow in the longitudinal and vertical direction and has the bottom inlet hole 4141a defined in the bottom portion.

[0593] With regard to the actuation mechanism 4140, the separate pressed portion 4145 and head support portion 4142 may be securely fastened to each other as follows: the inserted rib 4146a formed from the pressed portion 4145 is inserted into the rib receiving hole 4142a; also, when the inserted rib 4146a is inserted into the rib receiving hole 4142a, the first engaging protrusion 4146b formed on the inserted rib 4146a may be engaged into the first engaged groove 4142 formed in the outer face of the rib receiving hole 4142a.

[0594] The first engaging protrusion 4146a and the first engaged groove 4142 may extend in a direction perpendicular to the direction in which the inserted rib 4146a is inserted into the rib receiving hole 4142a and may be fastened to each other in the perpendicular direction. As a result, it is possible to further strengthen the fastening between the pressed portion 4145 and the head support portion 4142. Further, the pressed portion fixing ribs 4145b may protrude outwards along the rim of the distal end defining the opening therein in the cap-shaped portion 4145a, may bear against the uppermost inner face of the fluid-communication chamber 4113. As a result, the pressed portion 4145 may be fixed so as not to be separated from the present dispenser device.

[0595] The hollow piston portion 4141 has first and second lateral through-holes 4144 defined therein which penetrate through two opposite lateral points of the hollow piston portion 4141 respectively and communicate with the bottom receiving hole 4141a and the inner receiving space of the hollow piston portion 4141.

[0596] The first sealing ring 4148 surrounds the lower portion of the outer periphery of the hollow piston portion 4141, while the second sealing ring 4149 surrounds the upper portion of the outer periphery of the hollow piston portion 4141. All of the first and second lateral through-holes 4144 are defined between the first and second sealing rings 4148, 4149 in a vertical direction. An imaginary line between the first and second lateral through-holes 4144 meets the center of the circular cross section of the hollow piston portion 414.

[0597] A first fluid communication channel 4112 extends in the second direction perpendicular to the first direction at one side of the fluid-communication chamber 4131 and in the chamber body portion 4130. The first fluid communication channel 4112 communicates with one of the first and second lateral through-holes 4144 and the distal cosmetic-fluid outlet structure 4171 that externally flows the cosmetic fluid.

[0598] A second fluid communication channel 4132a extends in the second direction in the chamber body portion and at the other side of the fluid-communication chamber 4131. The second fluid communication channel 4132a communicates with the other of the first and second lateral through-holes 4144 and the cosmetic-fluid storage space of the elongate main body 4110.

[0599] When an external force is applied to the actuation mechanism 4140, the first elastic member 4147 is compressed such that at least a portion of the pressed portion 4145 is inserted into the fluid-communication chamber 4131 and the cosmetic fluid contained within the hollow piston portion 4141 flow through one of the first and second lateral through-holes 4144 and then through the first fluid communication channel 4112. At this time, the first fluid communication channel 4112 and the second fluid communication channel 4132a are positioned between the first and the second sealing rings 4148 and 4149 in terms of the height level.

[0600] When the external force applied to the actuation mechanism 4140 is released, the first elastic member 4147 is restored or returned, the pressed portion 4145 protrudes outside the fluid-communication chamber 4131, and, cosmetic fluid may flow into the hollow piston portion 4141 from the first storage sub-space s1 of the fluid supply tube 4150 through the second fluid communication channel 4132a.

[0601] When the actuation mechanism 4140 is inserted into or withdrawn from the fluid-communication chamber 4131, the first sealing ring 4148 may slide along the inner circumferential surface of the fluid-communication chamber 4131. In addition, when the actuation mechanism 4140 is inserted into or withdrawn from the fluid-communication chamber 4131, the second sealing ring 4149 may slide along the inner circumferential surface of the fluid-communication chamber 4131. In particular, when the actuation mechanism 4140 is withdrawn from the fluid-communication chamber 4131, the second sealing ring 4149 prevents the cosmetic fluid contained in the fluid-communication chamber 4131 from flowing out of the fluid-communication chamber 4131. The first and second sealing rings 4148 and 4149 are spaced apart from each other in the vertical direction, thereby preventing air from flowing into the fluid-communication chamber 4131.

[0602] The pair of actuation mechanisms 4140 may be configured in another embodiment. In this case, the pair of actuation mechanisms 4140 may include an upper actuation mechanism and a lower actuation mechanism. Liquid may be present between the upper and lower actuation mechanisms. In this case, the sealing rings associated with the upper actuation mechanism may be the first sealing ring 4148 and the second sealing ring 4149. Meanwhile, the lower actuation mechanism may include the third sealing ring and the fourth sealing ring. In this regard, when the lower actuation mechanism 4140 is inserted into or withdrawn from the fluid-communication chamber 4131, the third sealing ring may slide along the inner circumferential surface of the fluid-communication chamber 4131. In addition, when the lower actuation mechanism 4140 is inserted into or withdrawn from the fluid-communication chamber 4131, the fourth sealing ring may slide along the inner circumferential surface of the fluid-communication chamber 4131. In particular, when the lower actuation mechanism 4140 is withdrawn from the fluid-communication chamber 4131, the fourth sealing ring prevents the cosmetic fluid contained in the fluid-communication chamber 4131 from flowing out of the fluid-communication chamber 4131. The third and fourth sealing rings are spaced apart from each other in the vertical direction, thereby preventing air from flowing into the fluid-communication chamber 4131.

[0603] In another embodiment, the first sealing ring 4148 may be configured to be adjacent to the top side of the actuation mechanism 4140, while the second sealing ring 4149 may be configured to be adjacent to the bottom side of the actuation mechanism 4140. The first and second sealing rings 4148 and 4149 may be seated in first annular groove and the second annular groove which may be defined around the actuation mechanism 4140 at the height levels corresponding to the height levels where the first and the second sealing rings 4148 and 4149 are disposed respectively. The first annular groove and the second annular groove may shape-correspond to the first and the second sealing rings 4148 and 4149 respectively.

[0604] While the first and second sealing rings 4148 and 4149 are in close contact with the inner wall of the fluid-communication chamber 4131, the first and second sealing rings 4148 and 4149 may move along the inner wall of the fluid-communication chamber 4131. Each of the first and second sealing rings 4148, 4149 may be embodied, for example, as a resilient O-ring or a rubber packing. The present disclosure is not limited thereto. The first and second sealing rings 4148 and 4149 may slide along the inner wall of the fluid-communication chamber 4131 while bearing against and pressing the inner wall of the fluid-communication chamber 4131.

[0605] In this case, the space below the second sealing ring 4149 of the actuation mechanism 4140 inside the fluid-communication chamber 4131 is sealed by the second sealing ring 4149. Thereby, the pressure of the cosmetic fluid flowing from the fluid-communication chamber 4131 through the first fluid communication channel 4112 may be increased.

[0606] The second sealing ring 4149 prevents the loss of the cosmetic fluid that, otherwise may flow through the fine flow gaps defined in the inner wall of the fluid-communication chamber 4131. Thereby, the outflow of the cosmetic fluid from the fluid-communication chamber 4131 through the first fluid communication channel 4112 may reliably realized. Compared with the absence of the second sealing ring 4147, the cosmetic fluid out-flow can be realized with stronger pressure via the second sealing ring 4149.

[0607] When an external force is applied to the actuation mechanism 4140, the pressure of the cosmetic fluid in the fluid-communication chamber 4131 rises, thereby limiting the amount of cosmetic fluid flowing through the second fluid communication channel 4132a into the fluid-communication chamber 4131. At the same time, the cosmetic fluid is discharged through the first fluid communication channel 4112. On the contrary, when an external force applied to the actuation mechanism 4140 is released, the pressure of the cosmetic fluid in the fluid-communication chamber 4131 decreases, thereby preventing the discharge of the fluid through the first fluid communication channel 4112, and at the same time, the fluid may flow from the fluid supply tube 4150 through the second fluid communication channel 4132a into the fluid-communication chamber 4131. Thereby, the cosmetic fluid contained in the fluid-communication chamber 4131 may be maintained at a certain amount.

[0608] In an alternative, with reference to FIG. 60, the actuation mechanism in the region between the first and the second sealing rings 4148 and 4149 may be concaved inwards. In the actuation mechanism according to this embodiment, since the side face 4141' between the first and the second sealing rings 4148, 4149 is configured to be concave inward, the space between the inner wall of the fluid-communication chamber and the outer wall of the actuation mechanism may be enlarged between the first and second sealing rings 4148 and 4149. Thus, the cosmetic fluid can easily flow into the fluid-communication chamber 4131 from the fluid supply tube through one of the first and second lateral through-holes 4144 located between the first and second sealing rings 4148, 4149 without any restriction about the viscosity of the cosmetic fluid. Further, the cosmetic fluid can easily be discharged into the first fluid communication channel 4113 through the other of the first and second lateral through-holes 4144 between the first and second sealing rings 4148, 4149 without any restriction about the viscosity of the cosmetic fluid.

[0609] The fluid-communication chamber 4113 may include an upper enlarged chamber portion 4113a having a larger diameter than the head support portion 4142 and a larger diameter than the lower chamber portion 4141a. The head support portion 4142 is inserted into the upper enlarged chamber portion 4113a. The actuation mechanism may further include a vertical additional cylindrical tube extending upwardly from the top of the hollow piston portion 4141 in the upper enlarged chamber portion 4113a.

[0610] The first and second sealing rings 4147 and 4148 may slide in the vertical direction along the inner face of the additional cylindrical tube. The first elastic member 4147 may extend along the outer surface of the additional cylindrical tube in the upper enlarged chamber portion 4113a. The first elastic member 4147 may extend upwardly to the head portion along the outer surface of the head support portion 4142.

[0611] The additional cylindrical tube in the upper enlarged chamber portion 4113a is disposed above the first fluid communication channel 4112. The additional cylindrical tube in the upper enlarged chamber portion 4113a is located above the second fluid communication channel 4132a. The additional cylindrical tube may have a larger diameter than the hollow piston portion 4141. Thus, the cosmetic fluid flows from the cosmetic-fluid storage space S into the lower chamber portion below the upper enlarged chamber portion 4113a through the second fluid communication channel 4132a. Alternatively, the cosmetic fluid may flow from the cosmetic-fluid storage space S through the second fluid communication channel 4132a into between the inner cylindrical surface of the additional cylindrical tube and the outer lateral surface of the hollow piston portion 4141. To the contrary, the cosmetic fluid may flow into between the inner side face of the additional cylindrical tube and the outer side face of the hollow piston portion 4141 and then may be discharged through the first fluid communication channel 4112.

[0612] The upper enlarged chamber portion 4113a has a larger diameter than the head support portion 4142 and may be defined as the upper portion of the fluid-communication chamber 4113. The upper enlarged chamber portion 4113a has a diameter larger than that of the lower fluid-communication chamber 4131a. The upper enlarged chamber portion 4113a accommodates the first elastic member 4147 therein. Alternatively, the upper enlarged chamber portion 4113a may have the same diameter as the lower fluid-communication chamber 4131a, in which case the long spring type spring 4147 may surround the head support portion 421 within the upper chamber portion 4113a.

[0613] The actuation mechanism 4140 can reversibly move by elastic deformation of the first elastic member 4147. When an external force is applied to the actuation mechanism 4140, a first volume of cosmetic fluid contained in the fluid-communication chamber 4131 flows out through the first fluid communication channel 4112 to the distal cosmetic-fluid outlet structure 4170. When the external force applied to the actuation mechanism 4140 is released,

[0614] A volume of cosmetic fluid corresponding to the cosmetic fluid of the first volume exiting the distal cosmetic-fluid outlet structure 4171 flows from the cosmetic-fluid storage space of the fluid supply tube 4150, through the second fluid communication channel 4132a, and is introduced into the communication chamber 4131.

[0615] When an external force is applied to the actuation mechanism 4140, the actuation mechanism 4140 is inserted into the fluid-communication chamber 4131 so that a first volume of the cosmetic fluid contained in the fluid-communication chamber 4131 passes through the first fluid communication channel 4112 and is discharged to the outside through the distal cosmetic-fluid outlet structure 4170. When the external force applied to the actuation mechanism 4140 is released, the actuation mechanism 4140 is separated from the bottom of the fluid-communication chamber 4131 by the restoring force of the first elastic member 4147 of the actuation mechanism 4140, the space for accommodating the cosmetic fluid in the fluid-communication chamber 4131 increases. Thus, the fluid space within the fluid-communication chamber 4131 may be filled with a cosmetic fluid at an amount that reversibly changes due to movement of the actuation mechanism 4140 within the fluid-communication chamber 4131. For example, for this reversible change, in the actuation mechanism 4140, the bottom inlet hole 4141a and the first and second lateral through-holes 4144 can communicate with each other.

[0616] A cosmetic fluid of the same volume as the first volume cosmetic fluid exiting the distal cosmetic-fluid outlet structure 4171 is transferred from the cosmetic-fluid storage space S of the elongate main body 4110 through the second fluid communication channel 4132a to the fluid-communication can be introduced into the chamber 4131.

[0617] The space in the fluid-communication chamber 4131 defined in the chamber body portion 4130 is reduced by the actuation mechanism 4140 that has downwardly moved within the fluid-communication chamber 4131 by an external force applied to the actuation mechanism 4140. Thereby, an amount corresponding to the first volume of the cosmetic fluid received in the fluid-communication chamber 4131 flows out through the first fluid communication channel 4112 to the distal cosmetic-fluid outlet structure 4171. In addition, when the external force applied to the actuation mechanism 4140 is released, the actuation mechanism 4140 is moved out of the fluid-communication chamber 4131 so that the fluid-communication chamber 4131 in the chamber body portion 4130 is expanded by the first volume. At this time, the cosmetic fluid stored in the elongate main body 4110 flows into the fluid-communication chamber 4131 through the second opening 4362 of the cover 4360 to fill the first volume of the expanded fluid-communication chamber 4131.

[0618] The distal cosmetic-fluid outlet structure 4171 includes a fluid discharging hole 4171a protruding outward from the inner cap 4120 and discharging the cosmetic fluid to the outside, and an inserted portion 4171b disposed inside the inner cap 4120 and inserted and coupled to the inside of the distal end of the first fluid communication channel 4112.

[0619] In this connection, the cross section of the fluid discharging hole 4171a may be formed in an elliptic shape so that the fluid discharging hole 4171a can be closely adhered to the skin. According to another embodiment of the present disclosure, a fluid discharging hole may be combined with a brush (not shown) for makeup. As a result, the cosmetic fluid drained through the fluid discharging hole may be absorbed via the user's skin through the soft brush. At this time, the user may feel the touch of a soft brush and use cosmetic fluid for skin beauty.

[0620] When the proximal portion 4171b is inserted into the inner cap to communicate with the distal end of the first fluid communication channel 4112, a spacing Q is defined between the outer surface of the proximal portion 4171b and the inner surface of the first fluid communication channel 4112. Further, the proximal portion 4171b has a first fluid-communication space V1 defined therein in communication with the fluid discharging hole 4171a. More specifically, the first inserted portion 4171c of the inserted portion may have the first fluid-communication space V1 defined therein in communication with the fluid discharging hole 4171a.

[0621] The first inserted portion 4171c of the inserted portion has a first hole H1 defined therein for realizing fluid communication between the first fluid-communication space V1 and the spacing Q. The second inserted portion 4171d thereof has a second fluid-communication space V2 defined therein in communication with the fluid-communication chamber 4131, and has a second hole H2 defined therein to realize fluid-communication between the second fluid-communication space V2 and the spacing Q. A closing/opening means 4173 is configured to surround the second hole H2 to open or close the second hole H2 to control the movement of the cosmetic fluid through the second hole H2.

[0622] When the external force is applied to the actuation mechanism 4140, the closing/opening means 4173 is elastically deformed or displaced by the pressure resulting from the cosmetic fluid moving from the chamber to the distal end of the first fluid communication channel 4112. As a result, the second hole H2 is opened. When the pressure is weakened, the closing/opening means 4173 may be restored or returned by the restoring force due to the elastic deformation or displacement to close the second hole H2.

[0623] The closing/opening means 4173 is implemented as a kind of thin rubber film and extends along and on the annular outer circumferential surface of the second inserted portion 4171d and is capable of opening and closing the second hole H2 by elastic deformation or displacement thereof.

[0624] The cosmetic-fluid storage space of the elongate fluid supply tube 4150 includes a reversibly volumetric first cosmetic-fluid storage sub-space S1 and a second cosmetic-fluid storage sub-space S2. The first cosmetic-fluid storage sub-space s1 is a space from which the cosmetic fluid is delivered to the fluid-communication chamber 4131. The second cosmetic-fluid storage sub-space s2 may receive air from the outside.

[0625] FIG. 59 is a perspective view of the actuation mechanism and the first elastic member in FIG. 56. FIG. 60 is a perspective view of the actuation mechanism and first elastic member according to still further another embodiment of the present disclosure.

[0626] Referring to FIG. 59, the actuation mechanism 4140 and the first elastic member 4147 according to the present embodiment have the following structure: the first elastic member 4147 surrounds the head support portion 4142 of the actuation mechanism 4140; the top of the first elastic member 4147 is secured to a bottom face of the cap-shaped portion 4145a of the pressed portion 4145; the lower end of the first elastic member 4147 is seated on the step formed above the first and second fluid communication channels 4112, 4132a inside the fluid-communication chamber 4113. In one embodiment, the first elastic member 4147 extends in a vertical direction between the inner face of the upper enlarged chamber portion 4113a formed in the fluid-communication chamber 4113 and the outer face of the head support portion 4142 of the actuation mechanism 4140 may be expanded and contracted vertically therebetween.

[0627] With respect to the actuation mechanism 4140, one of the first and second sealing rings 4148, 4149 surrounds the outer circumferential surface of the head support portion 4142, while the other of the first and second sealing rings 4148, 4149 surrounds the outer periphery of the lower hollow piston portion 4141. The first and second lateral through-holes 4144 are passed through the opposite tow lateral points of the lower hollow piston portion 4141 so as to horizontally penetrate the lower hollow piston portion 4141. Thus, as shown in FIG. 58, when the actuation mechanism 4140 descends to a predetermined height level, a straight line between the first and second lateral through-holes 4144 may be aligned with the first and second fluid communication channels 4112 and 4132a. This aligned straight channel may be referred to as a linear fluid delivery path.

[0628] In another embodiment, both the first sealing ring 4148 and the second sealing ring 4149 may be disposed so as to surround the outer circumferential surface of the hollow piston portion 4141 and be vertically spaced from each other. In this case, at the level between the first sealing ring 4148 and the second sealing ring 4149, the first and second lateral through-holes 4144 may be defined. Because the hollowed-in inserted portion 4141 is internally hollow, the first and second lateral through-holes 4144 communicate with the bottom fluid opening 4141. Thus, the linear fluid delivery path also communicates with the bottom fluid opening 4141.

[0629] The chamber body portion 4130 may have the fluid-communication chamber 4131 defined in the chamber body portion 4130 and open at an upper end thereof and extending in a first direction perpendicular to the direction of the escape of cosmetic fluid from the elongate main body 4110. The chamber body portion 4130 has the first fluid communication channel 4112 defined therein at one side of the fluid-communication chamber 4131, wherein the first fluid communication channel 4112 communicates with the distal cosmetic-fluid outlet structure 4171 and extends in the second direction perpendicular to the first direction. The chamber body portion 4130 has the second fluid communication channel 4132a defined therein at the other side of the fluid-communication chamber 4131 and wherein the second fluid communication channel 4132a extends in a direction parallel to the second direction and communicates with the fluid storage space of the elongate main body 4110

[0630] When an external force is applied to the actuation mechanism 4140, the actuation mechanism 4140 is inserted into the fluid-communication chamber 4131 so that a first volume of the cosmetic fluid contained in the fluid-communication chamber 4131 passes through the first fluid communication channel 4112 and is discharged to the outside through the distal cosmetic-fluid outlet structure 4170. When the external force applied to the actuation mechanism 4140 is released, the actuation mechanism 4140 is separated from the bottom of the fluid-communication chamber 4131 by the restoring force of the first elastic member 4147 of the actuation mechanism 4140, the space for accommodating the cosmetic fluid in the fluid-communication chamber 4131 increases. Thus, the fluid space within the fluid-communication chamber 4131 may be filled with a cosmetic fluid at an amount that reversibly changes due to movement of the actuation mechanism 4140 within the fluid-communication chamber 4131. For example, for this reversible change, in the actuation mechanism 4140, the bottom inlet hole 4141a and the first and second lateral through-holes 4144 can communicate with each other. A cosmetic fluid of the same volume as the first volume cosmetic fluid exiting the distal cosmetic-fluid outlet structure 4171 is transferred from the cosmetic-fluid storage space S of the elongate main body 4110 through the second fluid communication channel 4132a to the fluid-communication can be introduced into the chamber 4131.

[0631] The first elastic member 4147 has an inner diameter corresponding to the outer diameter of the head support portion 4142. The first elastic member 4147 may have a smaller diameter than the pressed portion 4145.

[0632] In an alternative, with reference to FIG. 60, the actuation mechanism in the region between the first and the second sealing rings 4148 and 4149 may be concaved inwards. In the actuation mechanism according to this embodiment, since the side face 4141' between the first and the second sealing rings 4148, 4149 is configured to be concave inward, the space between the inner wall of the fluid-communication chamber and the outer wall of the actuation mechanism may be enlarged between the first and second sealing rings 4148 and 4149. Thus, the cosmetic fluid can easily flow into the fluid-communication chamber 4131 from the fluid supply tube through one of the first and second lateral through-holes 4144 located between the first and second sealing rings 4148, 4149 without any restriction about the viscosity of the cosmetic fluid. Further, the cosmetic fluid can easily be discharged into the first fluid communication channel 4113 through the other of the first and second lateral through-holes 4144 between the first and second sealing rings 4148, 4149 without any restriction about the viscosity of the cosmetic fluid.

[0633] In the following, with reference to FIGS. 61 to 62, another embodiment of the present disclosure will be described. Except for the following, details similar to those described in the embodiment described in FIGS. 53 to 60 are omitted.

[0634] FIG. 61 is a sectional view of the front portion of the elongate main body according to still further another embodiment of the present disclosure. FIG. 62 is a diagram schematically showing an external force applied to the actuation mechanism in FIG. 61.

[0635] With reference to FIG. 61 to FIG. 62, the cosmetic-fluid dispenser according to this embodiment includes a fluid-outlet adjustment ball 4475 disposed in a distal cosmetic-fluid outlet structure 4471 to control the amount of cosmetic fluid exiting through the first fluid communication channel 4112.

[0636] The distal cosmetic-fluid outlet structure 4171 includes the fluid discharging hole 4171a protruding outside the inner cap 4120 and discharging the cosmetic fluid to the outside, and an inserted portion disposed inside the inner cap 4120 and inserted into the distal end of the first fluid communication channel 4112. The inner diameter of the distal end of the first fluid communication channel 4112 may be greater than the inner diameter of the proximal end portion of the first fluid communication channel 4112 facing the actuation mechanism 4140.

[0637] The fluid-outlet adjustment ball 4475 is disposed toward the distal end side of the first fluid communication channel 4112 inside the proximal end of the proximal portion 4171b. The fluid-outlet adjustment ball 4475 has a diameter that is greater than the inner diameter of the rear portion of the first fluid communication channel 4112. In the downstream of the fluid-outlet adjustment ball 4475, the second elastic member 4473 is disposed.

[0638] When the external force is applied to the actuation mechanism 4140, the cosmetic fluid provided in the cosmetic-fluid storage space moves through the first fluid communication channel 4112 to press the fluid-outlet adjustment ball 4475, thereby compressing the elastic member 4473, the cosmetic fluid is discharged through the distal end of the first fluid communication channel 4112 and then through the distal cosmetic-fluid outlet structure 4171. When the cosmetic fluid depressurizes the fluid-outlet adjustment ball 4475, due to the restoring force of the second elastic member 4473, the fluid-outlet adjustment ball 4475 closes the rear end of the first fluid communication channel 4112.

[0639] In the cosmetic-fluid dispenser according to the present embodiment, the fluid-outlet adjustment ball 4475 is disposed in the distal cosmetic-fluid outlet structure 4471 so that the amount of cosmetic fluid that is the cosmetic that is discharged through the first fluid communication channel 4112 is controlled. When an external force is applied to the actuation mechanism 4140, the fluid-outlet adjustment ball 4475, due to the pressure by the cosmetic fluid flowing toward the distal end of the first fluid communication channel 4112, is moved in the direction toward the fluid outlet structure 4171, that is, in the third direction. When the pressure is weakened, the fluid-outlet adjustment ball 4475 is moved by the second elastic member 4473 in a fourth direction opposite to the third direction so that the opening 4431b of the distal end of the first fluid communication channel 4112 may be closed.

[0640] For example, the cosmetic-fluid dispenser according to the present embodiment includes, the spherical first fluid-outlet adjustment ball 4475 and the spherical second closing/opening means 4350 around the actuation mechanism 4140, that it, in the distal cosmetic-fluid outlet structure 4171 for discharging the cosmetic fluid to the outside, and the hollow cylindrical tube 4330 receiving the cosmetic fluid from the first cosmetic-fluid storage space S1 of the fluid supply tube 4150.

[0641] Along and on the outer face of the head support vertical portion 4142, the actuation mechanism 4140, the first elastic member may expand or be contracted.

[0642] As shown in FIG. 61 and FIG. 62, when the external force is released such that the pressed portion 4113 of the actuation mechanism 4140 moves upward, the second elastic member 4473 is moved in the fourth direction and is restored. Then, the fluid-outlet adjustment ball 4475 closes the distal cosmetic-fluid outlet structure 4171. At this time, the closing/opening means stopper 4340 is elastically biased in the third direction to move the closing/opening switcher 4350 away from the cover 4360 so that the cosmetic fluid provided within the first cosmetic-fluid storage space S1 of the elongate main body, that it, the fluid supply tube 4150 may be introduced into the fluid communication chamber 4131.

[0643] As shown in FIG. 61 and FIG. 62, when an external force is applied to the pressed portion and the actuation mechanism 4140 is pressed downward, the second elastic member 4473 in a response to receiving the external force is urged in a direction toward the outside of the distal cosmetic-fluid outlet structure 4171, that is, in the third direction, the first fluid communication channel 4112 may be opened via the fluid-outlet adjustment ball 4475. Thus, the cosmetic fluid and air are discharged to the outside through the distal cosmetic-fluid outlet structure 4471. At this time, the closing/opening means stopper 4340 presses the closing/opening means 4350 in the fourth direction such that the inflow of the cosmetic fluid from the fluid storage space in the elongate main body into the second fluid communication channel 4132a is restricted.

[0644] FIG. 63 is a cross-sectional view of the front portion of the elongate main body according to still further another embodiment of the present disclosure. FIG. 64 is a schematic view showing an external force applied to the actuation mechanism in FIG. 63. FIG. 65 is an enlarged view of a portion for controlling inflow of liquid in the rear portion of the elongate main body in FIG. 63. FIG. 66 is an exploded perspective view of FIG. 65.

[0645] FIG. 63 to FIG. 65, In the cosmetic-fluid dispenser according to this embodiment, components to enable fluid-communication between the second fluid communication channel 4132a and the cosmetic-fluid storage space S (that is, the first sub-space s1) of the elongate main body 4110 include a cosmetic-fluid inlet guide 41330 and an open cover 41360.

[0646] The chamber body portion 4130 further includes a hollow cosmetic-fluid inlet guide 41330 having one end in fluid communication with the second fluid communication channel 4132a and the other end protruding into the first inner sub-space S1; a hole-opening/closing member elastic support 41340 received in the other end portion of the cosmetic-fluid inlet guide 41330 and configured to support a hole-opening/closing member 41350; the hole-opening/closing member 41350 disposed at the distal end of the hole-opening/closing member elastic support 41340; and a hollow elongate cover 41360 surrounding the other end of the cosmetic-fluid inlet guide 41330, wherein the hollow elongate cover has first and second holes 41361 and 41362 defined in one end and the other end thereof respectively, wherein a portion thereof contacting the hole-opening/closing member 41350 has a truncated cone shape.

[0647] One end of the cosmetic-fluid inlet guide 41330 has a diameter larger than a diameter of the second fluid communication channel 4132a so as to surround the second fluid communication channel 4132a. A diameter of the first hole 41361 of the hollow elongate cover 41360 is greater than a diameter of its second hole 41362. Thus, the distal end of the hollow elongate cover 41360 has a truncated cone shape. The hole-opening/closing member 41350 is disposed at the distal end of the hole-opening/closing member elastic support 41340 and has a spherical shape. The hole-opening/closing member 41350 can reversibly open and close the second opening 411362 of the hollow elongate cover 41360 via a force exerted by the hole-opening/closing member elastic support 41340.

[0648] When the actuation mechanism 4140 is lowered, the second opening 411362 of the hollow elongate cover 41360 is closed via the hole-opening/closing member elastic support 41340 and the hole-opening/closing member 41350, thus, to limit the flow of the cosmetic-fluid through the second fluid communication channel 4132a. When the actuation mechanism 4140 is elevated, the second opening 411362 is opened to allow the flow of the cosmetic fluid through the second fluid communication channel 4132a to be activated.

[0649] In one embodiment, the hole-opening/closing member elastic support 41340 may be implemented as a spring. The hole-opening/closing member elastic support 41340 is received within the cosmetic-fluid inlet guide 41330 and extends from one end to the other end of a portion of the cosmetic-fluid inlet guide 41330 protruding into the space s1. The hole-opening/closing member 41350 is disposed at the distal end of the hole-opening/closing member elastic support 41340. The hole-opening/closing member 41350 is configured to close the second opening 411362 of the hollow elongate cover 41360. The diameter t1 of the cosmetic-fluid inlet guide 41330 is greater than the diameter of the second fluid communication channel 4132a. Thus, the hole-opening/closing member elastic support 41340 received in the cosmetic-fluid inlet guide 41330 does not enter the second fluid communication channel 4132a and is retained within the cosmetic-fluid inlet guide 41330.

[0650] When the pressure of the cosmetic-fluid in the fluid communication chamber 4131 is not high, the hole-opening/closing member elastic support 41340 does not press the hole-opening/closing member 41350 so that the second opening 411362 is not closed. Thereby, movement of the cosmetic-fluid through the second opening 411362 is possible. On the other hand, when the pressure within the fluid communication chamber 4131 is high, the cosmetic-fluid presses the hole-opening/closing member elastic support 41340, thereby pressing the hole-opening/closing member 41350, thus to block the flow of fluid through the second opening 411362.

[0651] The cosmetic-fluid inlet guide 41330 has an elongate hollow cylindrical shape. The hollow elongate cover 41360 has a larger inner diameter than an outer diameter of the cosmetic-fluid inlet guide 41330 to accommodate the cosmetic-fluid inlet guide 41330 therein. The hollow elongate cover 41360 has an elongate hollow cylindrical shape. A portion of the hollow elongate cover 41360 in contact with the hole-opening/closing member 41350 has a truncated-conical shape to surround the hole-opening/closing member 41350 exposed outwardly from the cosmetic-fluid inlet guide 41330. The cosmetic-fluid inlet guide 41330 is inserted into the hollow elongate cover 41360 so that the hole-opening/closing member elastic support 41340 and the hole-opening/closing member 41350 received within the cosmetic-fluid inlet guide 41330 is not prevented from escape therefrom.

[0652] A first fastening ring 411331 is formed on the outer circumference of the cosmetic-fluid inlet guide 41330 and a second fastening ring 411362 is formed on the inner circumference of the hollow elongate cover 41360. Via the engagement between the first fastening ring 411331 and the second fastening ring 411362, the hollow elongate cover 41360 is tightly coupled to the cosmetic-fluid inlet guide 41330. The cosmetic-fluid inlet guide 41330 is inserted into the hollow elongate cover 41360 such that the second fluid communication channel 4132a and the second opening 411362 of the hollow elongate cover 41360 are arranged so as to fluid-communicate with each other.

[0653] In one embodiment, the first fastening ring 411331 and the second fastening ring 411362 are implemented with a protrusion and a groove respectively. The first fastening ring 411331 and the second fastening ring 411362 may be engaged with each other by pressure-fitting. Alternatively, the first fastening ring 411331 and the second fastening ring 411362 are realized by a groove and a protrusion respectively. Alternatively, the first fastening ring 411331 and the second fastening ring 411362 may be engaged with each other by a thread-type engagement manner. The first and second fastening rings 41331 and 41362 are intended to securely secure the hollow elongate cover 41360 to the cosmetic-fluid inlet guide 41330. Thus, as long as this object is achieved by the first and second fastening rings 41331 and 41362, various configurations of the first and second fastening rings 41331 and 41362 may be considered.

[0654] The cylindrical space or fluid communication chamber 4131 defined within the chamber body portion 4130 is reduced by a first volume by the actuation mechanism 4140 being displaced in the first direction by the applied external force, and thus the fluid amount corresponding to the first volume flows out through the cosmetic-fluid outlet guide 41131 to the distal cosmetic-fluid outlet structure 4171. To the contrary, when the applied external force is released, the actuation mechanism 4140 is displaced in the second direction opposite to the first direction, such that the cylindrical space or fluid communication chamber 4131 defined within the chamber body portion 4130 is expanded by the first volume. At this time, the cosmetic fluid stored in the elongate main body 4110 flows through the second opening 411362, and the fluid inlet guide 41330 into the cylindrical space in the chamber body 41132 to compensate for the expanded first volume.

[0655] In other words, when an external force is applied, the actuation mechanism 4140 is displaced in a first direction such that at least a portion thereof is inserted into the fluid communication chamber 4131 and thus, the first volume of the cosmetic-fluid from the cosmetic-fluid contained in the cylindrical space is flowed through the first fluid communication channel 4112 into the distal cosmetic-fluid outlet structure 41171. When the applied external force is released, the actuation mechanism 4140 is displaced in a second direction opposite to the first direction, the cosmetic-fluid of the first volume is introduced from the inner sub-space S1 through the second opening 411362, the fluid inlet guide 41330, and the second fluid communication channel 4132a into the fluid communication chamber 4131 41132.

[0656] As for the conventional cosmetic container, the user needs to repeatedly immerse the brush into the liquid in the body in order to repeatedly applying the cosmetic liquid to the target skin. In this connection, since the brush has to be repeatedly put into and drawn out of the container body, external air may be flowed into the container body and, thus, the cosmetic liquid is easily hardened.

[0657] However, the present cosmetic-fluid dispenser may be capable of smoothly dispensing a constant amount of cosmetic-fluid. This may improve the user experience.

[0658] Further, the present cosmetic-fluid dispenser is always sealed to prevent deterioration and hardening of the cosmetic liquid therein.

[0659] Further, according to the present disclosure, it is possible to provide the cosmetic fluid dispenser capable of uniformly discharging a certain amount of cosmetic liquid without being influenced by an external force.

[0660] In addition, according to the present disclosure, it is possible to provide the cosmetic fluid dispenser capable of effectively preventing deterioration of the cosmetic liquid contained therein by stably blocking the inflow of air or the like from the outside thereto.

[0661] In addition, according to the present disclosure, there is provided the cosmetic fluid dispenser which is easy to carry because leakage of cosmetic liquid due to an uncontrolled external force thereto may not be suppressed.

[0662] In addition, according to the present disclosure, it is possible to provide the narrow and elongate cosmetic fluid dispenser that is slim and small in size while providing an excellent esthetic feeling because no protruding portion in a width direction is formed.

[0663] Further, according to the present disclosure, it is possible to provide the cosmetic fluid dispenser wherein the elastic member controlling the movement of the actuation mechanism does not contact the cosmetic liquid, and other unnecessary members are omitted in the flow channel of the cosmetic liquid such that characteristics of the cosmetic liquid may be maintained in a non-polluted state for a long period of time.

[0664] The above description is not to be taken in a limiting sense, but is made merely for the purpose of describing the general principles of exemplary embodiments, and many additional embodiments of this disclosure are possible. It is understood that no limitation of the scope of the disclosure is thereby intended. The scope of the disclosure should be determined with reference to the Claims. Reference throughout this specification to "one embodiment," "an embodiment," "one implementation," "an implementation," or similar language means that a particular feature, structure, or characteristic that is described in connection with the embodiment is included in at least one embodiment of the present disclosure. Thus, appearances of the phrases "in one embodiment," "in an embodiment," "one implementation," "an implementation," or similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.

Claims

1. A cosmetic-fluid dispenser comprising: an actuation mechanism configured to enable selective dispensing of a cosmetic-fluid; a elongate main body having a main inner space defined therein and opposite first and second end portions, wherein the main body has a first opening defined in a side portion thereof, wherein the main inner space contains therein a cosmetic-fluid, wherein the actuation mechanism passes through the first opening to enable the selective dispensing of a cosmetic-fluid; a fluid-communication chamber disposed in the first end portion of the elongate main body, wherein the fluid-communication chamber fluid-communicates with the elongate main body, wherein the fluid-communication chamber is configured to cooperate with the actuation mechanism to dispense a cosmetic-fluid out of the elongate main body; a distal cosmetic-fluid outlet structure fluid-communicating with the fluid-communication chamber, wherein the distal cosmetic-fluid outlet structure is disposed out of the main body; and a cap removably coupled to the elongate main body at the first end portion, wherein the fluid-communication chamber includes a chamber body having a cylindrical inner space defined therein, and a cosmetic-fluid outlet guide in fluid-communication with the chamber body, wherein a cosmetic-fluid outlet guide is in fluid-communication with the distal cosmetic-fluid outlet structure, wherein the chamber body has a fluid-inlet hole formed therein, a fluid-outlet hole fluid-communicating with a cosmetic-fluid outlet guide, and a second opening position-corresponding to the first opening, wherein a cosmetic fluid stored in the main body flows into the cylindrical chamber through the fluid-inlet hole, wherein the actuation mechanism is configured: upon application of an external force thereto, to move in a first direction to be at least partially inserted to the cylindrical space in the chamber body, thereby to discharge a first volume of cosmetic fluid contained in the cylindrical space in the chamber body through the fluid-outlet hole into the cosmetic fluid outlet; upon release of the applied external force, to move in a second direction opposite to the first direction, thereby to enable a cosmetic fluid of the same volume as the first volume to flow from the main body into the chamber body through the fluid-inlet hole, wherein the actuation mechanism includes: a pushed portion protruding out of the elongate main body to receive the external force; an insertable cylinder connected to the pushed portion and passing through the first and second openings; and a first elastic member loaded on the insertable cylinder and disposed within the cylindrical space in the chamber body, wherein the first elastic member is elastically deformed via the insertable cylinder when the external force is applied to the pushed portion, wherein the first elastic member is restored by an elastic restoring force when the external force is released, wherein when the external force is applied to the pushed portion, the insertable cylinder is moved from a first position to a second position; when the external force applied to the pushed portion is released, the insertable cylinder is moved from the second position to the first position by the first elastic member, wherein when the insertable cylinder is at the second position, the fluid-inlet hole is closed to disallow flow of a cosmetic-fluid through the fluid-inlet hole; when the insertable cylinder is at the first position, the fluid-inlet hole is opened to allow flow of a cosmetic-fluid through the fluid-inlet hole.

2. The dispenser of claim 1, the cylinder is lowered from a first position to a second position via external force being applied the pressed portion, while the cylinder rises up from the second position to the first position via elastic restoring force of the first elastic member, wherein when the cylinder is at the second position, the fluid inlet hole is closed while the cylinder is at the first position, the fluid inlet hole is opened, wherein the cap further comprises a fastening rib projecting from a distal end of the cap toward the actuation mechanism, wherein the actuation mechanism further comprises a step portion formed between the pushed portion and the insertable cylinder, the step portion having a diameter smaller than a diameter of the pushed portion, wherein the fastening rib extends toward the step portion, wherein a distal end of the fastening rib is rounded to shape-correspond to an outer circumference of the step portion, wherein the fastening rib protrudes toward an outer side face of the step portion so as to support a bottom of the pushed portion thereon to prevent movement of the pushed portion.

3. The dispenser of claim 1, wherein the actuation mechanism includes an proximal sealing ring coupled to the insertable cylinder, wherein the proximal sealing ring is configured to prevent escape of a cosmetic fluid out of the cylindrical space of the chamber body when the insertable cylinder moves from the first direction to the second direction or from the second direction to the first direction, wherein the proximal sealing ring is configured to prevent air flow in and out of the cylindrical space of the chamber body through the first opening, wherein the proximal sealing ring is engaged with a proximal end of an inserted portion of the insertable cylinder, wherein the proximal sealing ring projects further outwardly than an outer diameter of an extension portion between a proximal end and a distal end of an inserted portion of the insertable cylinder, wherein the extension portion has a diameter substantially equal to a diameter of the cylindrical space defined in the chamber body, and each of the proximal end and the distal end of an inserted portion has a diameter smaller than the diameter of the extension portion, wherein in the movement of the cylinder, the proximal sealing ring is compressed by a cylindrical inner wall of the chamber body to have a diameter substantially equal to a diameter of the cylindrical space of the chamber body, wherein the actuation mechanism further includes a distal sealing ring coupled to the insertable cylinder, wherein the distal sealing ring slides along and on the cylindrical inner wall of the chamber body when the insertable cylinder moves from the first direction to the second direction or from the second direction to the first direction, wherein the distal sealing ring is engaged with the distal end of the inserted portion of the insertable cylinder, wherein the distal sealing ring further projects outwardly beyond the diameter of the extension portion between the proximal and distal ends of the inserted portion of the insertable cylinder, wherein, in the movement of the cylinder, the distal sealing ring is compressed by the inner wall of the chamber body to have a diameter substantially the same as the diameter of the cylindrical space of the chamber body.

4. The dispenser of claim 1, further comprising a compressing member disposed in the main inner space of the elongate main body, wherein the compressing member is configured to divide the main inner space into a first inner sub-space and a second inner sub-space, wherein a cosmetic-fluid is stored in the first inner sub-space defined between the compressing member and the fluid-communication chamber, wherein when the external force applied to the actuation mechanism is released such that a cosmetic fluid of the first volume from the cosmetic fluid stored in the first inner sub-space passes through the fluid-inlet hole into the cylindrical space, the compressing member is displaced in a sliding manner along and on an inner face of the elongate main body such that a volume of the first inner sub-space is reduced by the first volume.

5. The dispenser of claim 4, further comprising a sealing cap passing through and sealing the second end of the elongate main body, wherein the second inner sub-space is defined between the compressing member and the sealing cap, wherein when a volume of the first inner sub-space is reduced by the first volume, a volume of the second inner sub-space is expanded by the first volume.

6. The dispenser of claim 1, wherein the distal cosmetic-fluid outlet structure includes: an outlet hole formed in a downstream region thereof for discharging a cosmetic-fluid; and an inserted portion formed in an upstream region thereof and inserted into a distal end of the cosmetic-fluid outlet guide, wherein when the inserted portion is inserted into the distal end of the cosmetic-fluid outlet guide, a spacing is defined between an outer peripheral surface of the inserted portion and an inner peripheral surface of the cosmetic-fluid outlet guide, wherein the inserted portion has a first inserted sub-portion, a second inserted sub-portion, and a hole-opening/closing member, wherein the first inserted sub-portion defines therein a first fluid-communication channel in fluid-communication with the outlet hole, wherein the first inserted sub-portion has a first fluid-communication hole defined therein to allow fluid-communication between the first fluid-communication channel and the spacing, wherein the second inserted sub-portion defines therein a second fluid-communication channel in fluid-communication with the fluid-outlet hole, wherein the second inserted sub-portion has a second fluid-communication hole defined therein to allow fluid-communication between the second fluid-communication channel and the spacing, wherein the hole-opening/closing member is constructed to surround the second fluid-communication hole and to control flow of a cosmetic-fluid through the second fluid-communication hole.

7. The dispenser of claim 6, wherein when an external force is applied to the actuation mechanism, the hole-opening/closing member is elastically deformed via a pressure generated by a cosmetic-fluid moving toward the distal end of a cosmetic-fluid outlet guide through the fluid-outlet hole, thereby to open the second fluid-communication hole, wherein when the external force applied to the actuation mechanism is released such that the pressure is weakened, the hole-opening/closing member is restored by an elastic restoring force, thereby to close the second fluid-communication hole.

8. The dispenser of claim 1, wherein a removable cosmetic-fluid storage unit is removably received in the main inner space of the main body, wherein the removable cosmetic-fluid storage unit includes: a removable elongate body having an elongate inner space therein, wherein the removable elongate body is removably inserted into the inner space of the elongate main body; a compressing member disposed in the elongate inner space to divide the elongate inner space of the removable elongate body into a first inner sub-space and a second inner sub-space; and a sealing cap configured to seal the inner space of the removable elongate body and the second end of the elongate main body, wherein a cosmetic-fluid is stored in the first inner sub-space defined between the compressing member and the chamber body of the fluid-communication chamber, wherein when the external force applied to the actuation mechanism is released so that a cosmetic-fluid of the first-volume from a cosmetic-fluid stored in the first inner sub-space passes through the fluid-inlet hole into the cylindrical space of the chamber body, the compressing member is displaced in a sliding manner along and on an inner face of the removable elongate body so that a volume of the first inner sub-space is reduced by the first volume.

9. A cosmetic-fluid dispenser comprising: an actuation mechanism configured to enable selective dispensing of a cosmetic-fluid; a elongate main body having a main inner space defined therein and opposite first and second end portions, wherein the main body has a first opening defined in a side portion thereof, wherein the main inner space contains therein a cosmetic-fluid, wherein the actuation mechanism passes through the first opening to enable the selective dispensing of a cosmetic-fluid; a fluid-communication chamber disposed in the first end portion of the elongate main body, wherein the fluid-communication chamber fluid-communicates with the elongate main body, wherein the fluid-communication chamber is configured to cooperate with the actuation mechanism to dispense a cosmetic-fluid out of the elongate main body; a distal cosmetic-fluid outlet structure fluid-communicating with the fluid-communication chamber, wherein the distal cosmetic-fluid outlet structure is disposed out of the main body; and a cap removably coupled to the elongate main body at the first end portion, wherein the fluid-communication chamber includes a chamber body having a cylindrical inner space defined therein, and a cosmetic-fluid outlet guide in fluid-communication with the chamber body, wherein a cosmetic-fluid outlet guide is in fluid-communication with the distal cosmetic-fluid outlet structure, wherein the chamber body has a fluid-inlet hole formed therein, a fluid-outlet hole fluid-communicating with a cosmetic-fluid outlet guide, and a second opening position-corresponding to the first opening, wherein a cosmetic fluid stored in the main body flows into the cylindrical chamber through the fluid-inlet hole, wherein the actuation mechanism is configured: upon application of an external force thereto, to move in a first direction to be at least partially inserted to the cylindrical space in the chamber body, thereby to discharge a first volume of cosmetic fluid contained in the cylindrical space in the chamber body through the fluid-outlet hole into the cosmetic fluid outlet; upon release of the applied external force, to move in a second direction opposite to the first direction, thereby to enable a cosmetic fluid of the same volume as the first volume to flow from the main body into the chamber body through the fluid-inlet hole, wherein the actuation mechanism includes: a pushed portion protruding out of the elongate main body to receive the external force; an insertable cylinder connected to the pushed portion and passing through the first and second openings; and a first elastic member loaded on the insertable cylinder and disposed within the cylindrical space in the chamber body, wherein the first elastic member is elastically deformed via the insertable cylinder when the external force is applied to the pushed portion, wherein the first elastic member is restored by an elastic restoring force when the external force is released, wherein the fluid-communication chamber further includes: a hollow cosmetic-fluid inlet guide having a proximal portion in fluid-communication with the fluid-inlet hole and a distal portion protruding into the main inner space of the main body; a hole-opening/closing member elastic support received in a cosmetic-fluid inlet guide and configured to support a hole-opening/closing member; the hole-opening/closing member disposed at a distal end of the hole-opening/closing member elastic support; and a hollow elongate cover surrounding the distal portion of a cosmetic-fluid inlet guide, wherein the hollow elongate cover has first and second holes defined in proximal and distal ends thereof respectively, wherein a portion of the cover contacting the hole-opening/closing member has a truncated cone shape, wherein when the external force is applied to the pushed portion, the insertable cylinder is moved from a first position to a second position; when the external force applied to the pushed portion is released, the insertable cylinder is moved from the second position to the first position by the first elastic member, wherein when the insertable cylinder is at the second position, the second hole is closed via the hole-opening/closing member being pressured by the hole-opening/closing member elastic support, thereby to disallow flow of a cosmetic-fluid through the fluid-inlet hole, wherein when the insertable cylinder is at the first position, the second hole is opened to allow flow of a cosmetic-fluid through the fluid-inlet hole.

10. The dispenser of claim 9, wherein the cylinder is lowered from a first position to a second position via external force being applied the pressed portion, while the cylinder rises up from the second position to the first position via elastic restoring force of the first elastic member, wherein when the cylinder is at the second position, the fluid inlet hole is closed while the cylinder is at the first position, the fluid inlet hole is opened, wherein the cap further comprises a fastening rib projecting from a distal end of the cap toward the actuation mechanism, wherein the actuation mechanism further comprises a step portion formed between the pushed portion and the insertable cylinder, the step portion having a diameter smaller than a diameter of the pushed portion, wherein the fastening rib extends toward the step portion, wherein a distal end of the fastening rib is rounded to shape-correspond to an outer circumference of the step portion, wherein the fastening rib protrudes toward an outer side face of the step portion so as to support a bottom of the pushed portion thereon to prevent movement of the pushed portion.

11. The dispenser of claim 9, wherein a proximal end of the cosmetic-fluid inlet guide has a diameter larger than a diameter of the fluid-inlet hole so as to surround the fluid-inlet hole, wherein a diameter of the first hole of the hollow elongate cover is greater than a diameter of the second hole thereof, wherein a distal end of the hollow elongate cover has a truncated cone shape, wherein the hole-opening/closing member elastic support includes a spring received in the cosmetic-fluid inlet guide, wherein the hole-opening/closing member is disposed at the distal end of the hole-opening/closing member elastic support and has a spherical shape, wherein the hole-opening/closing member is configured to reversibly open and close the second hole of the hollow elongate cover via a force exerted by the hole-opening/closing member elastic support.

12. The dispenser of claim 11, wherein a first fastening structure is formed on and along an outer circumference of the cosmetic-fluid inlet guide, and a second fastening structure is formed on and along an inner circumference of the hollow elongate cover, wherein via engagement between the first fastening structure and the second fastening structure, the hollow elongate cover is tightly coupled to the cosmetic-fluid inlet guide, wherein the cosmetic-fluid inlet guide is inserted into the hollow elongate cover such that the fluid-inlet hole and the second hole of the hollow elongate cover are arranged so as to fluid-communicate with each other.

13. The dispenser of claim 9, wherein the actuation mechanism includes an proximal sealing ring coupled to the insertable cylinder, wherein the proximal sealing ring is configured to prevent escape of a cosmetic fluid out of the cylindrical space of the chamber body when the insertable cylinder moves from the first direction to the second direction or from the second direction to the first direction, wherein the proximal sealing ring is configured to prevent air flow in and out of the cylindrical space of the chamber body through the first opening, wherein the proximal sealing ring is engaged with a proximal end of an inserted portion of the insertable cylinder, wherein the proximal sealing ring projects further outwardly than an outer diameter of an extension portion between a proximal end and a distal end of an inserted portion of the insertable cylinder, wherein the extension portion has a diameter substantially equal to a diameter of the cylindrical space defined in the chamber body, and each of the proximal end and the distal end of an inserted portion has a diameter smaller than the diameter of the extension portion, wherein in the movement of the cylinder, the proximal sealing ring is compressed by a cylindrical inner wall of the chamber body to have a diameter substantially equal to a diameter of the cylindrical space of the chamber body, wherein the actuation mechanism further includes a distal sealing ring coupled to the insertable cylinder, wherein the distal sealing ring slides along and on the cylindrical inner wall of the chamber body when the insertable cylinder moves from the first direction to the second direction or from the second direction to the first direction, wherein the distal sealing ring is engaged with the distal end of the inserted portion of the insertable cylinder, wherein the distal sealing ring further projects outwardly beyond the diameter of the extension portion between the proximal and distal ends of the inserted portion of the insertable cylinder, wherein, in the movement of the cylinder, the distal sealing ring is compressed by the inner wall of the chamber body to have a diameter substantially the same as the diameter of the cylindrical space of the chamber body.

14. The dispenser of claim 9, further comprising a compressing member disposed in the main inner space of the elongate main body, wherein the compressing member is configured to divide the main inner space into a first inner sub-space and a second inner sub-space, wherein a cosmetic-fluid is stored in the first inner sub-space defined between the compressing member and the fluid-communication chamber, wherein when the external force applied to the actuation mechanism is released such that a cosmetic fluid of the first volume from the cosmetic fluid stored in the first inner sub-space passes through the hollow fluid inlet guide and the fluid-inlet hole into the cylindrical space, the compressing member is displaced in a sliding manner along and on an inner face of the elongate main body such that a volume of the first inner sub-space is reduced by the first volume, wherein the dispenser further comprises a sealing cap passing through and sealing the second end of the elongate main body, wherein the second inner sub-space is defined between the compressing member and the sealing cap, wherein when a volume of the first inner sub-space is reduced by the first volume, a volume of the second inner sub-space is expanded by the first volume, wherein the sealing cap has an air-communication hole defined therein, wherein the air-communication hole allows air-communication between the second inner sub-space and an exterior space of the cosmetic-fluid dispenser, wherein the air-communication hole defines a channel through which, when the second inner sub-space is expanded by the first volume, an outside air of the same volume as the first volume flows into the second inner sub-space.

15. The dispenser of claim 9, wherein the distal cosmetic-fluid outlet structure includes: an outlet hole formed in a downstream region thereof for discharging a cosmetic-fluid; and an inserted portion formed in an upstream region thereof and inserted into a distal end of the cosmetic-fluid outlet guide, wherein when the inserted portion is inserted into the distal end of the cosmetic-fluid outlet guide, a spacing is defined between an outer peripheral surface of the inserted portion and an inner peripheral surface of the cosmetic-fluid outlet guide, wherein the inserted portion has a first inserted sub-portion, a second inserted sub-portion, and a hole-opening/closing member, wherein the first inserted sub-portion defines therein a first fluid-communication channel in fluid-communication with the outlet hole, wherein the first inserted sub-portion has a first fluid-communication hole defined therein to allow fluid-communication between the first fluid-communication channel and the spacing, wherein the second inserted sub-portion defines therein a second fluid-communication channel in fluid-communication with the fluid-outlet hole, wherein the second inserted sub-portion has a second fluid-communication hole defined therein to allow fluid-communication between the second fluid-communication channel and the spacing, wherein the hole-opening/closing member is constructed to surround the second fluid-communication hole and to control flow of a cosmetic-fluid through the second fluid-communication hole.

16. The dispenser of claim 15, wherein when an external force is applied to the actuation mechanism, the hole-opening/closing member is elastically deformed via a pressure generated by a cosmetic-fluid moving toward the distal end of a cosmetic-fluid outlet guide through the fluid-outlet hole, thereby to open the second fluid-communication hole, wherein when the external force applied to the actuation mechanism is released such that the pressure is weakened, the hole-opening/closing member is restored by an elastic restoring force, thereby to close the second fluid-communication hole.

17. The dispenser of claim 9, wherein a removable cosmetic-fluid storage unit is removably received in the main inner space of the main body, wherein the removable cosmetic-fluid storage unit includes: a removable elongate body having an elongate inner space therein, wherein the removable elongate body is removably inserted into the inner space of the elongate main body; a compressing member disposed in the elongate inner space to divide the elongate inner space of the removable elongate body into a first inner sub-space and a second inner sub-space; and a sealing cap configured to seal the inner space of the removable elongate body and the second end of the elongate main body, wherein a cosmetic-fluid is stored in the first inner sub-space defined between the compressing member and the chamber body of the fluid-communication chamber, wherein when the external force applied to the actuation mechanism is released so that a cosmetic-fluid of the first-volume from a cosmetic-fluid stored in the first inner sub-space passes through the fluid-inlet hole into the cylindrical space of the chamber body, the compressing member is displaced in a sliding manner along and on an inner face of the removable elongate body so that a volume of the first inner sub-space is reduced by the first volume.

18. The dispenser of claim 9, wherein the distal cosmetic-fluid outlet structure includes: an outlet hole formed in a downstream region thereof for discharging a cosmetic-fluid; and an inserted portion formed in an upstream region thereof and inserted into a distal end of the cosmetic-fluid outlet guide, wherein the outlet hole has an elliptical-shaped cross-section, wherein an inner diameter of a distal end portion of the cosmetic-fluid outlet guide is larger than an inner diameter of a middle extension portion of the cosmetic-fluid outlet guide, wherein the inserted portion of the distal cosmetic-fluid outlet structure is inserted into the distal end portion of the cosmetic-fluid outlet guide.

19. The dispenser of claim 18, further comprising: a second elastic member disposed between an outer peripheral surface of the inserted portion of the distal cosmetic-fluid outlet structure, and an inner peripheral surface of the distal end portion of the cosmetic-fluid outlet guide; and an outlet-control ball disposed at a proximal end of the second elastic member, wherein the outlet-control ball has a larger diameter than a diameter of the middle extension portion of the cosmetic-fluid outlet guide.

20. The dispenser of claim 19, wherein when an external force is applied to the actuation mechanism, the outlet-control ball is subjected to a pressure generated by the cosmetic-fluid moving toward the distal end of the cosmetic-fluid outlet guide through the fluid-outlet hole, and, thus, is moved in a third direction, wherein the third direction is perpendicular to the first direction or second direction, wherein the third direction is a direction going away from the cylindrical space, wherein when the pressure generated by the cosmetic-fluid is weakened, the outlet-control ball is moved by the second elastic member in a fourth direction opposite to the third direction, thereby to close a further inlet hole defined in a boundary region between the distal end portion and the middle extension portion of the cosmetic-fluid outlet guide.

21. A cosmetic-fluid dispenser comprising: an elongate main body having a cosmetic-fluid storage space defined therein to contain cosmetic fluid therein, wherein the elongate main body has a chamber body portion; a fluid-communication chamber defined in the chamber body portion in a first direction, wherein the first direction is a direction perpendicular to a longitudinal direction of the elongate main body; an actuation mechanism at least partially hollowed and insertable into the fluid-communication chamber, wherein a top thereof protrudes outside the fluid-communication chamber, and a bottom thereof is received in the fluid-communication chamber, and has a bottom inlet hole defined therein; a first vertical elastic hollow member having a lower end disposed on a bottom face of the fluid communication chamber, wherein at least a portion of an upper portion thereof is inserted into the actuation mechanism through the bottom inlet hole; a first fluid communication channel defined in the chamber body portion in a direction away from the cosmetic-fluid storage space; a second fluid communication channel defined in the chamber body portion to fluid-communicate with the cosmetic-fluid storage space; and a cosmetic-fluid outlet structure configured to communicate with the first fluid communication channel, wherein the cosmetic-fluid outlet structure has a fluid discharging hole defined in a distal end thereof and exposed to an outside of the dispenser, wherein a top of the chamber body portion has a first round concaved top portion having an opening defined therein through which the actuation mechanism passes into the chamber, wherein an outer face of the top of the actuation mechanism has a shape conformal to a round concaved shape of the round concaved top portion.

22. The cosmetic-fluid dispenser of claim 21, wherein the cosmetic-fluid dispenser further comprise: an inner cap coupled to one longitudinal end of the elongate main body, the inner cap having a second round concaved top portion corresponding in position to the first round concaved top and having a shape conformal to the shape of the first round concaved top portion, wherein the second round concaved top portion has an opening defined therein through which the actuation mechanism passes into the chamber; an outer cap having a receiving space for receiving the distal cosmetic-fluid outlet structure, wherein the outer cap is removably engaged with the inner cap, wherein the receiving space is defined as a cylindrical hollow inner space for partially receiving the inner cap.

23. The cosmetic-fluid dispenser of claim 21, wherein each of the first and second fluid communication channels extends in a second direction, wherein the second direction is the longitudinal direction of the elongate main body, wherein a hollow cylindrical tube has an inner diameter greater than an diameter of the second fluid communication channel, and the hollow cylindrical tube protrudes from an outer face of the chamber body portion into the fluid storage space defined in the main body, wherein a hollow cover portion is partially fitted into the hollow cylindrical tube and has a first opening defined at a proximal end thereof communicating with the second fluid communication channel, and has a second opening defined at a distal end thereof communicating with the fluid storage space, wherein closing/opening means is configured to reversibly open and close the second opening defined in the cover portion, wherein the closing/opening means is disposed in the cover portion and is movable, wherein a closing/opening means stopper has an annular shape and protrudes inwardly from an inner circumference of the cover portion to limit movement of the closing/opening means.

24. The cosmetic-fluid dispenser of claim 23, wherein the cover portion has an outer portion disposed out of the hollow cylindrical tube, wherein the outer portion defines the second opening defined therein, wherein the outer portion has a hollow truncated conical shape.

25. The cosmetic-fluid dispenser of claim 24, wherein the hollow cylindrical tube has an annular groove defined in the inner face thereof while the cover portion has an annular protrusion defined on an outer face thereof, wherein the annular protrusion is engaged into the annual groove; alternatively, the hollow cylindrical tube has an annular protrusion defined on the inner face thereof while the cover portion has an annular groove defined in an outer face thereof, wherein the annular protrusion is engaged into the annual groove; and wherein the inner space of the hollow cylindrical tube is configured to fluid-communicate with the second fluid communication channel and to fluid-communicate with the second opening of the cover portion.

26. The cosmetic-fluid dispenser of claim 21, wherein the first elastic member is configured such that elastic deformation of the first elastic member allows up and down movements of the actuation mechanism to be reversible, wherein when an external force is applied to the actuation mechanism, a first volume of cosmetic fluid contained in the fluid-communication chamber flows through the first fluid communication channel into the cosmetic-fluid outlet structure, wherein when the external force applied to the actuation mechanism is released, cosmetic fluid of an amount equal to the first volume flows from the cosmetic-fluid storage space through the second fluid communication channel into the fluid-communication chamber.

27. The cosmetic-fluid dispenser of claim 26, wherein the actuation mechanism includes: a hollow piston portion formed in a cylindrical shape to be inserted into the fluid-communication chamber, wherein the hollow piston portion has a bottom inlet hole defined in a bottom portion thereof, wherein the hollow piston portion has a fluid receiving space defined therein; a head support portion extending upward from the hollow piston portion, wherein the head support portion has an outer diameter smaller than an outer diameter of the hollow piston portion and is formed in a cylindrical shape and has a hole defined in a top portion thereof; a head including: a pressed portion to which external force is applied and which is exposed out of the fluid-communication chamber; and an inserted rib which extends from a bottom of the pressed portion and is inserted into the hole defined in the head support portion; and First and second sealing rings spaced apart from each other in a vertical direction and disposed around an outer surface of the hollow piston portion.

28. The cosmetic-fluid dispenser of claim 27, wherein the hollow piston portion has first and second lateral through-holes defined therein in opposite lateral points of the hollow piston portion respectively, wherein the first and second lateral through-holes communicate with the bottom inlet hole and the inner receiving space of the hollow piston portion, wherein the first and second lateral through-holes communicate with the first and second fluid communication channels respectively, wherein the first sealing ring surrounds a lower portion of an outer periphery of the hollow piston portion, while the second sealing ring surrounds an upper portion of the outer periphery of the hollow piston portion, wherein both of the first and second lateral through-holes are defined between the first and second sealing rings in a vertical direction, wherein each of the first and second lateral through-holes extends horizontally.

29. The cosmetic-fluid dispenser of claim 28, wherein the first fluid communication channel communicates with the fluid outlet structure, wherein the second fluid communication channel communicates with the fluid storage space defined in the main body, wherein each of the first and second fluid communication channels extends in a second direction, wherein the second direction is the longitudinal direction of the elongate main body, wherein when external force is applied to the actuation mechanism, the first elastic member is compressed in a compressed mode such that the piston portion is lowered, and, thus, cosmetic fluid contained within the inner fluid receiving space of the hollow piston portion flows through the first lateral through-hole and then through the first fluid communication channel, wherein at the compressed mode, the first fluid communication channel and the second fluid communication channel are positioned between the first and the second sealing rings at a height level thereof, wherein when the external force applied to the actuation mechanism is released, the first elastic member is restored at a restored mode such that the piston portion rises up in the fluid-communication chamber, and, thus, cosmetic fluid flows from the fluid storage space of the main body through the second fluid communication channel and then the second lateral through-hole into the inner fluid receiving space of the hollow piston portion.

30. The cosmetic-fluid dispenser of claim 29, wherein when the piston portion is lowered down or raised up, the first sealing ring slides along an inner circumferential face of the fluid-communication chamber, wherein when the piston portion is lowered down or raised up, the second sealing ring slides along an inner circumferential face of the fluid-communication chamber to prevent the cosmetic fluid contained in the fluid-communication chamber from flowing out of the fluid-communication chamber, wherein the first and second sealing rings are spaced apart from each other in a vertical direction, thereby preventing air from flowing into the fluid-communication chamber.

31. The cosmetic-fluid dispenser of claim 21, wherein the cosmetic-fluid dispenser comprises an elongate fluid-supply tube detachably inserted into the inner space of the elongate main body, wherein the elongate fluid-supply tube has an elongate inner space defined therein, wherein the inner space of the elongate fluid-supply tube is partitioned into a first inner sub-space and a second inner sub-space, wherein volumes of the first inner sub-space and the second inner sub-space vary reversibly in a complementary manner to each other, wherein the first inner sub-space contains therein the cosmetic fluid to be delivered into the fluid-communication chamber, while the second sub-space contains therein air flowing from an outside of the dispenser, wherein when external force applied to the actuation mechanism is released, a first volume of cosmetic-fluid stored in the first inner sub-space passes through the second fluid-communication channel into the fluid communication chamber, and, at the same time, the volume of the first inner sub-space is reduced by the first volume while the volume of the second inner sub-space is expanded by the first volume.

32. The cosmetic-fluid dispenser of claim 31, wherein an O-ring is provided on an outer face of a first longitudinal end of the cosmetic elongate fluid-supply tube, while an annular groove into which the O-ring is seated is defined in an inner face of the elongate main body such that the cosmetic elongate fluid-supply tube and the elongate main body are tightly coupled to each other, wherein the first longitudinal end faces the chamber body portion, wherein a second longitudinal end of the cosmetic elongate fluid-supply tube is air-tightly blocked by a blocking portion having an air communication channel defined therein.

33. The cosmetic-fluid dispenser of claim 31, wherein the cosmetic-fluid dispenser comprises an elongate fluid-supply tube detachably inserted into the inner space of the elongate main body, wherein the elongate fluid-supply tube has an elongate inner space defined therein, wherein the inner space of the elongate fluid-supply tube is partitioned into a first inner sub-space and a second inner sub-space by a compressing member, wherein volumes of the first inner sub-space and the second inner sub-space vary reversibly in a complementary manner to each other, wherein the first inner sub-space contains therein the cosmetic fluid to be delivered into the fluid-communication chamber, while the second sub-space contains therein air flowing from an outside of the dispenser, wherein the cosmetic elongate fluid-supply tube has a first longitudinal end facing the chamber body portion, wherein the cosmetic elongate fluid-supply tube has a sealing cap defining a second longitudinal end of the cosmetic elongate fluid-supply tube, wherein the second longitudinal end is opposite the first longitudinal end, wherein the sealing cap is tightly inserted into an opening in the second longitudinal end, wherein the sealing cap has an air communication channel defined therein communicating with the second inner sub-space, wherein the second inner sub-space is defined between the compressing member and the sealing cap, wherein the volume of the first inner sub-space is reduced by a first volume via movement of the compressing member toward the first longitudinal end together with compressing the fluid in the first sub-space while the volume of the second inner sub-space is forcedly expanded by the first volume via the air-communication hole allowing air-communication between the second inner sub-space and an exterior space of the cosmetic-fluid dispenser.

34. The cosmetic-fluid dispenser of claim 22, wherein the cosmetic-fluid outlet structure includes: a distal portion defining a downstream portion of the cosmetic-fluid outlet structure, wherein the distal portion has a fluid discharging hole in a tip end thereof for discharging the cosmetic-fluid, wherein the fluid discharging hole is out of the inner cap; and a proximal portion defining an upstream portion of the cosmetic-fluid outlet structure, wherein the proximal portion is inserted into an inner elongate space defined in the inner cap, wherein the proximal portion has a first inserted portion connecting the distal portion and a second inserted portion facing the first fluid communication channel, wherein a blocking partition is formed between the first and second inserted portions, wherein an elongate spacing is defined between an outer face of the proximal portion and an inner face of the inner elongate space defined in the inner cap, wherein a first fluid-communication space is defined in the first inserted portion to be in communication with the fluid discharging hole, wherein the first inserted portion has a first hole defined therein for fluid communication between the first fluid-communication space and the elongate spacing, wherein the second inserted portion has a second fluid-communication space defined therein in communication with the first fluid communication channel, wherein the second inserted portion has a second hole defined therein for fluid-communication between the second fluid-communication space and the elongate spacing, wherein hole closing/opening means is disposed in the elongate spacing and is configured to open or close the second hole to control flow of the cosmetic fluid through the second hole.

35. The cosmetic-fluid dispenser of claim 34, wherein when the external force is applied to the actuation mechanism, the hole closing/opening means is elastically deformed by a pressure resulting from the cosmetic fluid moving from the fluid communication chamber toward a distal end of the first fluid communication channel, thereby to open the second hole, wherein when the pressure is deactivated, the hole closing/opening means is elastically restored via a restoring force thereof, thereby to close the second hole.

36. The cosmetic-fluid dispenser of claim 22, wherein the cosmetic-fluid outlet structure includes: a distal portion defining a downstream portion of the cosmetic-fluid outlet structure, wherein the distal portion has a fluid discharging hole in a tip end thereof for discharging the cosmetic-fluid, wherein the fluid discharging hole is out of the inner cap; and a proximal portion defining an upstream portion of the cosmetic-fluid outlet structure, wherein the proximal portion is hollow and is inserted into an inner elongate slot defined in the inner cap, wherein the inner elongate slot communicates with the first fluid communication channel, and the inner elongate slot has an inner diameter larger than an inner diameter of the first fluid communication channel, wherein a fluid-outlet adjustment ball is movably disposed in the hollow proximal end toward a distal end of the first fluid communication channel, wherein the fluid-outlet adjustment ball has a diameter greater than an inner diameter of the first fluid communication channel, wherein a second elastic member is disposed in the hollow proximal end in a downstream region of the fluid-outlet adjustment ball.

37. The cosmetic-fluid dispenser of claim 36, wherein when the external force is applied to the actuation mechanism, the cosmetic fluid contained in the fluid communication chamber moves through the first fluid communication channel toward the elongate slot to forcedly move the fluid-outlet adjustment ball toward the fluid discharging hole, thereby to compress the second elastic member, thereby to allow the cosmetic fluid to be discharged through the fluid discharging hole, wherein when the cosmetic fluid depressurizes the fluid-outlet adjustment ball, the fluid-outlet adjustment ball moves to close the distal end of the first fluid communication channel via a restoring force of the second elastic member.

38. A cosmetic-fluid dispenser comprising: an elongate main body having a cosmetic-fluid storage space defined therein to contain cosmetic fluid therein, wherein the elongate main body has a chamber body portion; a fluid-communication chamber defined in the chamber body portion in a first direction, wherein the first direction is a direction perpendicular to a longitudinal direction of the elongate main body; an actuation mechanism at least partially hollowed and insertable into the fluid-communication chamber, wherein a top thereof protrudes outside the fluid-communication chamber, and a bottom thereof is received in the fluid-communication chamber, and has a bottom inlet hole defined therein; a first vertical elastic hollow member extending along and surrounding an upper portion of the actuation mechanism, wherein the first vertical elastic hollow member allows reversible vertical movement of the actuation mechanism; a first fluid communication channel defined in the chamber body portion in a direction away from the cosmetic-fluid storage space; a second fluid communication channel defined in the chamber body portion to fluid-communicate with the cosmetic-fluid storage space; and a cosmetic-fluid outlet structure configured to communicate with the first fluid communication channel, wherein the cosmetic-fluid outlet structure has a fluid discharging hole defined in a distal end thereof and exposed to an outside of the dispenser, wherein a top of the chamber body portion has a first round concaved top portion having an opening defined therein through which the actuation mechanism passes into the chamber, wherein an outer face of the top of the actuation mechanism has a shape conformal to a round concaved shape of the round concaved top portion, wherein the actuation mechanism includes: a hollow piston portion formed in a cylindrical shape to be inserted into the fluid-communication chamber, wherein the hollow piston portion has the bottom inlet hole defined in a bottom portion thereof, wherein the hollow piston portion has a fluid receiving space defined therein; a head support portion extending upward from the hollow piston portion and having an outer diameter smaller than an outer diameter of the hollow piston portion; and a head supported by the head support portion, wherein the first vertical elastic hollow member has a top end contacting the head.

39. The cosmetic-fluid dispenser of claim 38, wherein the head includes: a pressed portion to which an external force is applied and which is exposed out of the fluid-communication chamber; and an inserted rib extending downwards from a bottom of the pressed portion, wherein the pressed portion includes: a cap-shaped portion being circular in a cross section and being open at a bottom thereof, and being hollow and having a blocked top; and an annular rib protruding outward along a rim of a bottom end of the cap-shaped portion, wherein the annular rib defines a bottom opening of the cap-shaped portion and bears against an uppermost inner face of the fluid-communication chamber, wherein the inserted rib protrudes downward from an inner central position of the cap-shaped portion, wherein a first engaging protrusion protrudes horizontally from an outer face of the inserted rib, wherein the head support portion has a rib receiving hole defined in a top thereof through which the inserted rib is inserted, wherein a first engaged groove is defined radially outwards in an inner face of the rib receiving hole and receives therein the first engaging protrusion.

40. The cosmetic-fluid dispenser of claim 39, wherein the actuation mechanism includes first and second sealing rings spaced apart from each other in a vertical direction, wherein the first and second sealing rings are disposed around an outer surface of the hollow piston portion, wherein the hollow piston portion has first and second lateral through-holes defined therein in opposite lateral points of the hollow piston portion respectively, wherein the first and second lateral through-holes communicate with the bottom inlet hole and the inner receiving space of the hollow piston portion, wherein the first and second lateral through-holes communicate with the first and second fluid communication channels respectively, wherein both of the first and second lateral through-holes are defined between the first and second sealing rings in a vertical direction, wherein each of the first and second lateral through-holes extends horizontally.

41. The cosmetic-fluid dispenser of claim 40, wherein the first fluid communication channel communicates with the fluid outlet structure, wherein the second fluid communication channel communicates with the fluid storage space defined in the main body, wherein each of the first and second fluid communication channels extends in a second direction, wherein the second direction is the longitudinal direction of the elongate main body, wherein when external force is applied to the actuation mechanism, the first elastic member is compressed in a compressed mode such that the piston portion is lowered, and, thus, cosmetic fluid contained within the inner fluid receiving space of the hollow piston portion flows through the first lateral through-hole and then through the first fluid communication channel, wherein at the compressed mode, the first fluid communication channel and the second fluid communication channel are positioned between the first and the second sealing rings at a height level thereof, wherein when the external force applied to the actuation mechanism is released, the first elastic member is restored at a restored mode such that the piston portion rises up in the fluid-communication chamber, and, thus, cosmetic fluid flows from the fluid storage space of the main body through the second fluid communication channel and then the second lateral through-hole into the inner fluid receiving space of the hollow piston portion.

42. The cosmetic-fluid dispenser of claim 41, wherein when the piston portion is lowered down or raised up, the first sealing ring slides along an inner circumferential face of the fluid-communication chamber, wherein when the piston portion is lowered down or raised up, the second sealing ring slides along an inner circumferential face of the fluid-communication chamber to prevent the cosmetic fluid contained in the fluid-communication chamber from flowing out of the fluid-communication chamber, wherein the first and second sealing rings are spaced apart from each other in a vertical direction, thereby preventing air from flowing into the fluid-communication chamber.

43. The cosmetic-fluid dispenser of claim 41, wherein each of the first and second fluid communication channels extends in a second direction, wherein the second direction is the longitudinal direction of the elongate main body, wherein a hollow cylindrical tube has an inner diameter greater than an diameter of the second fluid communication channel, and the hollow cylindrical tube protrudes from an outer face of the chamber body portion into the fluid storage space defined in the main body, wherein a hollow cover portion is partially fitted into the hollow cylindrical tube and has a first opening defined at a proximal end thereof communicating with the second fluid communication channel, and has a second opening defined at a distal end thereof communicating with the fluid storage space, wherein closing/opening means is configured to reversibly open and close the second opening defined in the cover portion, wherein the closing/opening means is disposed in the cover portion and is movable, wherein a closing/opening means stopper has an annular shape and protrudes inwardly from an inner circumference of the cover portion to limit movement of the closing/opening means.

44. The cosmetic-fluid dispenser of claim 41, wherein the fluid communication chamber has an upper portion and a lower portion, wherein the upper portion thereof has a larger diameter than the lower portion, wherein a spacing is defined between the first elastic member and an inner wall face of the upper portion of the fluid communication chamber.

45. The cosmetic-fluid dispenser of claim 44, wherein a hollow cylindrical portion further upwards extends from an upper portion of the hollow piston portion, wherein the hollow cylindrical portion has a lower portion surrounding the upper portion of the hollow piston portion, wherein the hollow cylindrical portion is disposed in the upper portion of the fluid communication chamber.

46. The cosmetic-fluid dispenser of claim 43, wherein the cover portion has an outer portion disposed out of the hollow cylindrical tube, wherein the outer portion defines the second opening defined therein, wherein the outer portion has a hollow truncated conical shape.

47. The cosmetic-fluid dispenser of claim 46, wherein the hollow cylindrical tube has an annular groove defined in the inner face thereof while the cover portion has an annular protrusion defined on an outer face thereof, wherein the annular protrusion is engaged into the annual groove; alternatively, the hollow cylindrical tube has an annular protrusion defined on the inner face thereof while the cover portion has an annular groove defined in an outer face thereof, wherein the annular protrusion is engaged into the annual groove; and wherein the inner space of the hollow cylindrical tube is configured to fluid-communicate with the second fluid communication channel and to fluid-communicate with the second opening of the cover portion.

48. The cosmetic-fluid dispenser of claim 41, wherein each of the first and second fluid communication channels extends in a second direction, wherein the second direction is the longitudinal direction of the elongate main body, wherein a hollow cylindrical tube has an inner diameter greater than an diameter of the second fluid communication channel, and the hollow cylindrical tube protrudes from an outer face of the chamber body portion into the fluid storage space defined in the main body, wherein a hollow cover portion is partially fitted into the hollow cylindrical tube and has a first opening defined at a proximal end thereof communicating with the second fluid communication channel, and has a second opening defined at a distal end thereof communicating with the fluid storage space, wherein an inner diameter of the cover portion decreases gradually from the first opening thereof to the second opening thereof, wherein a closing/opening ball is configured to reversibly open and close the second opening defined in the cover portion, wherein the ball is disposed in the cover portion and is movable, wherein a spring is disposed in the cover portion and is configured to push the ball toward the second opening.

49. The cosmetic-fluid dispenser of claim 48, wherein the hollow cylindrical tube has an annular groove defined in the inner face thereof while the cover portion has an annular protrusion defined on an outer face thereof, wherein the annular protrusion is engaged into the annual groove; alternatively, the hollow cylindrical tube has an annular protrusion defined on the inner face thereof while the cover portion has an annular groove defined in an outer face thereof, wherein the annular protrusion is engaged into the annual groove; and wherein the inner space of the hollow cylindrical tube is configured to fluid-communicate with the second fluid communication channel and to fluid-communicate with the second opening of the cover portion.

50. The cosmetic-fluid dispenser of claim 38, wherein the dispenser comprises: an inner cap coupled to one longitudinal end of the elongate main body, the inner cap having a second round concaved top portion corresponding in position to the first round concaved top and having a shape conformal to the shape of the first round concaved top portion, wherein the second round concaved top portion has an opening defined therein through which the actuation mechanism passes into the chamber; an outer cap having a receiving space for receiving the distal cosmetic-fluid outlet structure, wherein the outer cap is removably engaged with the inner cap, wherein the receiving space is defined as a cylindrical hollow inner space for partially receiving the inner cap.

51. The cosmetic-fluid dispenser of claim 41, wherein the first elastic member is configured such that elastic deformation of the first elastic member allows up and down movements of the actuation mechanism to be reversible, wherein when an external force is applied to the actuation mechanism, a first volume of cosmetic fluid contained in the fluid-communication chamber flows through the first fluid communication channel into the cosmetic-fluid outlet structure, wherein when the external force applied to the actuation mechanism is released, cosmetic fluid of an amount equal to the first volume flows from the cosmetic-fluid storage space through the second fluid communication channel into the fluid-communication chamber.

52. The cosmetic-fluid dispenser of claim 41, wherein the cosmetic-fluid dispenser comprises an elongate fluid-supply tube detachably inserted into the inner space of the elongate main body, wherein the elongate fluid-supply tube has an elongate inner space defined therein, wherein the inner space of the elongate fluid-supply tube is partitioned into a first inner sub-space and a second inner sub-space, wherein volumes of the first inner sub-space and the second inner sub-space vary reversibly in a complementary manner to each other, wherein the first inner sub-space contains therein the cosmetic fluid to be delivered into the fluid-communication chamber, while the second sub-space contains therein air flowing from an outside of the dispenser, wherein when external force applied to the actuation mechanism is released, a first volume of cosmetic-fluid stored in the first inner sub-space passes through the second fluid-communication channel into the fluid communication chamber, and, at the same time, the volume of the first inner sub-space is reduced by the first volume while the volume of the second inner sub-space is expanded by the first volume.

53. The cosmetic-fluid dispenser of claim 38, wherein the cosmetic-fluid dispenser comprises an elongate fluid-supply tube detachably inserted into the inner space of the elongate main body, wherein the elongate fluid-supply tube has an elongate inner space defined therein, wherein the inner space of the elongate fluid-supply tube is partitioned into a first inner sub-space and a second inner sub-space by a compressing member, wherein volumes of the first inner sub-space and the second inner sub-space vary reversibly in a complementary manner to each other, wherein the first inner sub-space contains therein the cosmetic fluid to be delivered into the fluid-communication chamber, while the second sub-space contains therein air flowing from an outside of the dispenser, wherein the cosmetic elongate fluid-supply tube has a first longitudinal end facing the chamber body portion, wherein the cosmetic elongate fluid-supply tube has a sealing cap defining a second longitudinal end of the cosmetic elongate fluid-supply tube, wherein the second longitudinal end is opposite the first longitudinal end, wherein the sealing cap is tightly inserted into an opening in the second longitudinal end, wherein the sealing cap has an air communication channel defined therein communicating with the second inner sub-space, wherein the second inner sub-space is defined between the compressing member and the sealing cap, wherein the volume of the first inner sub-space is reduced by a first volume via movement of the compressing member toward the first longitudinal end together with compressing the fluid in the first sub-space while the volume of the second inner sub-space is forcedly expanded by the first volume via the air-communication hole allowing air-communication between the second inner sub-space and an exterior space of the cosmetic-fluid dispenser.

54. The cosmetic-fluid dispenser of claim 52, wherein an O-ring is provided on an outer face of a first longitudinal end of the cosmetic elongate fluid-supply tube, while an annular groove into which the O-ring is seated is defined in an inner face of the elongate main body such that the cosmetic elongate fluid-supply tube and the elongate main body are tightly coupled to each other, wherein the first longitudinal end faces the chamber body portion, wherein a second longitudinal end of the cosmetic elongate fluid-supply tube is air-tightly blocked by a blocking portion having an air communication channel defined therein.

55. The cosmetic-fluid dispenser of claim 38, wherein the cosmetic-fluid outlet structure includes: a distal portion defining a downstream portion of the cosmetic-fluid outlet structure, wherein the distal portion has a fluid discharging hole in a tip end thereof for discharging the cosmetic-fluid, wherein the fluid discharging hole is out of the inner cap; and a proximal portion defining an upstream portion of the cosmetic-fluid outlet structure, wherein the proximal portion is inserted into an inner elongate space defined in the inner cap, wherein the proximal portion has a first inserted portion connecting the distal portion and a second inserted portion facing the first fluid communication channel, wherein a blocking partition is formed between the first and second inserted portions, wherein an elongate spacing is defined between an outer face of the proximal portion and an inner face of the inner elongate space defined in the inner cap, wherein a first fluid-communication space is defined in the first inserted portion to be in communication with the fluid discharging hole, wherein the first inserted portion has a first hole defined therein for fluid communication between the first fluid-communication space and the elongate spacing, wherein the second inserted portion has a second fluid-communication space defined therein in communication with the first fluid communication channel, wherein the second inserted portion has a second hole defined therein for fluid-communication between the second fluid-communication space and the elongate spacing, wherein hole closing/opening means is disposed in the elongate spacing and is configured to open or close the second hole to control flow of the cosmetic fluid through the second hole.

56. The cosmetic-fluid dispenser of claim 55, wherein when the external force is applied to the actuation mechanism, the hole closing/opening means is elastically deformed by a pressure resulting from the cosmetic fluid moving from the fluid communication chamber toward a distal end of the first fluid communication channel, thereby to open the second hole, wherein when the pressure is deactivated, the hole closing/opening means is elastically restored via a restoring force thereof, thereby to close the second hole.

57. The cosmetic-fluid dispenser of claim 55, wherein the cosmetic-fluid outlet structure includes: a distal portion defining a downstream portion of the cosmetic-fluid outlet structure, wherein the distal portion has a fluid discharging hole in a tip end thereof for discharging the cosmetic-fluid, wherein the fluid discharging hole is out of the inner cap; and a proximal portion defining an upstream portion of the cosmetic-fluid outlet structure, wherein the proximal portion is hollow and is inserted into an inner elongate slot defined in the inner cap, wherein the inner elongate slot communicates with the first fluid communication channel, and the inner elongate slot has an inner diameter larger than an inner diameter of the first fluid communication channel, wherein a fluid-outlet adjustment ball is movably disposed in the hollow proximal end toward a distal end of the first fluid communication channel, wherein the fluid-outlet adjustment ball has a diameter greater than an inner diameter of the first fluid communication channel, wherein a second elastic member is disposed in the hollow proximal end in a downstream region of the fluid-outlet adjustment ball.

58. The cosmetic-fluid dispenser of claim 57, wherein when the external force is applied to the actuation mechanism, the cosmetic fluid contained in the fluid communication chamber moves through the first fluid communication channel toward the elongate slot to forcedly move the fluid-outlet adjustment ball toward the fluid discharging hole, thereby to compress the second elastic member, thereby to allow the cosmetic fluid to be discharged through the fluid discharging hole, wherein when the cosmetic fluid depressurizes the fluid-outlet adjustment ball, the fluid-outlet adjustment ball moves to close the distal end of the first fluid communication channel via a restoring force of the second elastic member.