Class / Patent application number | Description | Number of patent applications / Date published |
360250000 | For moving head into/out of transducing position | 59 |
20080239580 | Magnetic head for perpendicular magnetic recording and method of manufacturing same, the magnetic head including pole layer and two shields that sandwich the pole layer - A magnetic head incorporates: a medium facing surface; a coil; a pole layer; first and second shields disposed to sandwich the pole layer therebetween; a first gap layer disposed between the first shield and the pole layer; a second gap layer disposed between the second shield and the pole layer; and a substrate. The first shield is located closer to the substrate than the second shield. The magnetic head further incorporates an antireflection film disposed between the first shield and the first gap layer or between the first gap layer and the pole layer. The pole layer is formed by frame plating. | 10-02-2008 |
20090128960 | Thin plate formation method, thin plate and suspension correction apparatus, and correction method - Laser beam irradiation areas are provided in a load curve portion and an angle adjustment portion of a suspension. The laser beam irradiation areas are oriented in a direction in which the suspension is to be bent. A laser beam having a predetermined length and a predetermined shape is irradiated onto each laser beam irradiation area. | 05-21-2009 |
20090213499 | RAMP MECHANISM AND MAGNETIC DISK APPARATUS - A hard disk drive is provided with a ramp mechanism at the side of the disks for holding head sliders when the disks do not rotate. The ramp mechanism includes a ramp unit at least partially opposed to an outer edge of each disk medium. A roller provided in the ramp unit rotatably contacts the outer edge of the disk medium when the outer edge of the disk medium deflects with respect to its rotation axis. | 08-27-2009 |
20110013320 | HARD DISK DRIVE HAVING SLIDER LIMITER - A hard disk drive (HDD) including a slider limiter. The HDD includes a spindle motor installed to a base member; at least one disk mounted to the spindle motor to be rotated by the spindle motor; an actuator moving a read/write head to a desired position on the at least one disk; and a ramp that is installed outside the at least one disk to park the read/write head when the at least one disk stops rotating. A slider limiter that is disposed between the flexures facing each other in order to limit vertical fluctuation of the slider is formed on the ramp. A step portion or a hollow space is formed in a portion of the slider limiter facing the slider, and a side-tab is protruded from both sides of the flexure to face the slider limiter on both sides of the hollow space. | 01-20-2011 |
20120014016 | Motor and recording disc driving device - There are provided a motor and a recording disc driving device, which may improve a coupling structure of the motor to enable a magnet provided in a rotor to thereby double as a conventional stopper. The motor may include: a sleeve into which a shaft is rotatably inserted; a sleeve holder including a body part into which the sleeve is inserted, and a flange part protruded from an upper end portion of the body part in an outer diameter direction; a rotor case fastened to an upper end portion of the shaft, and formed such that a cylindrically shaped-rotor main wall is protruded downwardly in an axial direction to receive the flange part; a magnet fastened to a distal end of the rotor main wall so that a part of the magnet is protruded downwardly of the flange part; and a stator fastened to face the magnet, and generating an electromagnetic force. | 01-19-2012 |
360254000 | Disk record | 54 |
20080204939 | MAGNETIC DISK DEVICE - A magnetic disk device performs yaw angle correction of a magnetic head is compact, and performs yaw angle correction without changing the arm length. A suspension is rotatably provided on the tip of an arm which is rotated by a rotating actuator and an interconnection device is provided, one end of which is connected to a fixed shaft fixed on a housing, the other end of which is connected to a rotating shaft of the suspension, and which, by means of rotation of the arm, causes rotation of the suspension about the rotating shaft in the direction opposite the direction of rotation of the arm. | 08-28-2008 |
20080212237 | Disk drive device and manufacturing method thereof - In a disk drive device having a double cover structure with low-density gas enclosed therein, embodiments of the present invention allow a more reliable leak inspection to be performed on the second cover and to prevent defects caused by joining the secondary cover. An HDD according to an embodiment of the present invention comprises a ventilation path from a ventilation hole on an inner cover to a space between the inner cover and an outer cover. An outer peripheral end of an adhesive layer is apart from a joining section, which is exposed in the space. Helium gas flowing out of the ventilation hole flows to the space via the ventilation path and remains within the space. This enables detection of leakage of the helium gas from the joining section to be performed more easily. | 09-04-2008 |
20080247094 | Flex cable assembly for robust right angle interconnect - A hard disk drive flex cable assembly, for conveying data between a connector to a host system and a head stack assembly, comprises a flex cable, which in part has a first end for coupling to the connector, and a second end for coupling to the head stack assembly; and a stiffener coupled to the second end, wherein the stiffener supports at least one termination pad of the second end on three sides of the termination pad. | 10-09-2008 |
20080291576 | CONTROLLER, STORAGE APPARATUS AND CONTROL METHOD - A controller controls movement of a head mounted in a storage apparatus based on a signal output from an acceleration sensor. A head movement control section which controls movement of the head to a target position on a storage medium and a head unload control section unloads the head to an unload position based on (1) the time at which a drop or initial impact is first detected based on a signal output from the acceleration sensor and (2) threshold information, which includes a first threshold representing a standard strength of the signal output from the acceleration sensor at the time of drop and a second threshold representing a standard strength of the signal output from the acceleration sensor at the time of initially receiving impact. | 11-27-2008 |
20090052090 | Disk device and electronic equipment using the same - A disk device includes an actuator which can be turned around a shaft bearing portion as a turning center in a radius direction of a recording medium, a ramp block which holds a part of the actuator on the occasion of retracting a head portion of the actuator, a circuit substrate portion which carries out at least any one of transmission and reception of a signal to and from at least a head portion and the actuator, an upper side chassis, and a lower side chassis, and a turning shaft of the actuator, the ramp block and the circuit substrate portion have fastening portions on both sides in a perpendicular direction to the recording medium, respectively, and by fastening the fastening portions from the upper side chassis and the lower side chassis, the actuator, the ramp block and the circuit substrate portions are incorporated in the upper side chassis and the lower side chassis. | 02-26-2009 |
20090091860 | HGA suspension pad barrier for elimination of solder bridging defect - A method and apparatus for preventing solder bridging. The method includes providing a substrate layer upon which a solder pad is disposed. The method further includes providing a signal conductive layer within the substrate layer. The method also includes forming a solder pad upon the signal conductive layer. The solder pad has a base surface. The method additionally includes forming a barrier portion above the said base surface of the solder pad. The barrier portion is for controlling solder flow during a reflow process. | 04-09-2009 |
20090262461 | FLUID DYNAMIC BEARING WITH AN IMMISCIBLE FLUID BARRIER - A fluid dynamic bearing with an immiscible fluid barrier deposited on the bearing oil is disclosed. One embodiment provides the fluid dynamic bearing having a seal gap to define a seal cavity. The seal cavity is filled with the bearing oil for lubricating the fluid dynamic bearing. The immiscible fluid is disposed on the bearing oil to prevent the bearing oil from evaporating from the seal cavity. In one embodiment, the immiscible fluid is insoluble in the bearing oil. | 10-22-2009 |
20090273861 | MANUFACTURING METHOD OF MAGNETIC RECORDING MEDIUM, THE MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING AND REPRODUCING APPARATUS - A magnetic recording medium includes a substrate; and a recording film formed on the substrate and including a main magnetic film, the main magnetic film where a recording area and a guard area are formed by local ion doping, the guard area having saturation magnetization smaller than saturation magnetization of the recording area. A primary layer is provided at a substrate side of the main magnetic film. A main ingredient of the primary layer is at least one kind of atom selected from a group consisting of Cr, B, Mo, Al, Si, and C. | 11-05-2009 |
20090310261 | INFORMATION STORAGE DEVICE - An information storage device includes: a disk-like rotatable recording medium; and a head reproducing information from and/or recording information into the recording medium. The device further includes: a fixed portion having and turns around a turning axis extending in the same direction as a rotation axis of the recording medium; and a moving portion holding the head, supported by the fixed portion, and movable relative to the fixed portion in a direction approaching and separating from the rotation axis. The device further includes: a pin fixed to and projecting from the moving portion; and a guide having a wall on which the pin abuts and slides as the moving portion turns, and restricting an orbit of the pin by a form of the wall to a predetermined orbit that extends to a leading side of the moving portion as the pin moves toward an inner periphery of the recording medium. | 12-17-2009 |
20100067149 | SYSTEM, METHOD AND APPARATUS FOR ONSET MAGNETIC OXIDE LAYER FOR HIGH PERFORMANCE PERPENDICULAR MAGNETIC RECORDING MEDIA - Perpendicular magnetic recording media has been enhanced by controlling the initial growth of magnetic oxide layers and increased magnetic isolation between the grains in the initial magnetic layer. An onset magnetic oxide layer is sputter deposited in an argon-oxygen gas mixture between the main CoPtCr-oxide magnetic layers and the underlying Ru layer. The insertion of the onset magnetic oxide layer enhances the coercivity of the oxide magnetic layers and also improves the nucleation field. The media signal-to-noise ratio and bit error rate also are significantly improved due to the improvement of the initial segregation of Co magnetic grains in the magnetic oxide layers. | 03-18-2010 |
20100118446 | DISK-CHUCKING DEVICE - A disk-chucking device comprises a pressing member including a circular groove which is provided around a circumference of the clamp member, and a clamping member mounted on a turning plate for clasping the circular groove of the pressing member. The turning plate provides a through hole at the center thereof which allows the pressing member passing through, and a plurality of first notch portions disposed along the circumference of the through hole. The turning plate is slidably connected to a mounting board through the clamping member. The turning plate can rotate with respect to the mounting board to move the pressing member vertically. Thus, the pressing member can be pressed onto and removed from a disk support of the displayer according to the rotation of the turning plate. The present disk-chucking device can chuck the disk securely regardless of the position of the disk player. | 05-13-2010 |
20100246068 | HARD DISK DRIVE - In a hard disk drive (HDD), a ratio of the distance R between the axis of rotation of an actuator and a magnetic head to the distance R | 09-30-2010 |
20100254045 | SILENT RETRACT OF HEADS IN A HARD DISK DRIVE - A hard disk drive with an actuator arm assembly that is coupled to a head and includes a voice coil motor. The drive also includes a drive circuit that provides a drive current to the voice coil motor to move the actuator arm assembly into contact with a magnet. The drive circuit limits an amplitude, and/or changes the pulse width, of the drive current as the actuator arm assembly approaches the magnet. Limiting the amplitude and/or changing the pulse widths reduces any audible noise associated with retracting the heads. | 10-07-2010 |
20100259853 | HARD DISK DRIVE - A hard disk drive includes a head stack assembly including an actuator arm, a voice coil coupled to a bobbin, and a pivot shaft holder, rotatably coupled to a pivot shaft, disposed between the actuator arm and the voice coil. The hard disk drive also includes at least one magnet, disposed adjacent to the voice coil, which interacts and with the voice coil when current flows in the voice coil, thus generating an electromagnetic force to pivot the actuator arm around the pivot shaft, and a flux fringe prevention layer comprising a magnetic material and coupled to the voice coil, to prevent magnetic flux generated in the magnet being bent in the voice coil. | 10-14-2010 |
20100296198 | Sub-assembly for a hard disc drive - A bracket for a hard disc drive combining three separate functions, a ramp, a latch and a connector bracket into a single assembly. The bracket assembly, mounted with ramp and latch, secures and seals the electrical connector connecting the flexible printed circuit on the head side of the actuator. Traditionally, latches are on the coil side of the actuator. Moreover, the combination bracket improves manufacturability while reducing overall cost for the disc drive. The assembly can be purchased complete from a supplier. | 11-25-2010 |
20110211280 | METHOD AND APPARATUS FOR AT LEAST ONE ACTUATOR ARM DAMPER COVERING AT LEAST ONE LIGHTENING HOLE IN A HARD DISK DRIVE TO REDUCE TRACK MIS-REGISTRATION (TMR) - This application discloses a hard disk drive, a head stack assembly, an actuator arm, and an arm damper configured for coupling to an actuator arm to create the head stack assembly used in the hard disk drive. The actuator arm has two arm dampers covering a lightening hole on either side of the actuator arm and configured to reduce the effects of airflow turbulence and mechanical vibration in the hard disk drive. Also disclosed, methods of operating the hard disk drive and of manufacturing for the head stack assembly and the hard disk drive. | 09-01-2011 |
20120182646 | PERPENDICULAR MAGNETIC RECORDING HEAD AND MAGNETIC DISK APPARATUS - According to one embodiment, a perpendicular magnetic recording head includes a main pole which generates a recording magnetic field, a return pole which forms a closed magnetic circuit for the recording magnetic field, and a side shield magnetically spaced from the main pole in a cross-track direction in which a point on a trailing edge of the side shield which is closest to the main pole is positioned on a leading side of a trailing edge of the main pole. | 07-19-2012 |
20120206837 | MAGNETORESISTIVE ELEMENT, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING/REPRODUCING APPARATUS - A magnetoresistive element includes a lamination body and a pair of electrodes. The lamination body includes a first magnetic layer, a second magnetic layer, and a spacer layer. The spacer layer is provided between the first magnetic layer and the second magnetic layer and includes an oxide layer. The oxide layer includes at least one element selected from the group consisting of Zn, In, Sn, and Cd, and at least one element selected from the group consisting of Fe, Co, and Ni. | 08-16-2012 |
20150009591 | STREAMLINED VOICE COIL ACTUATOR FOR HARD DISK DRIVE - Approaches to improving head positioning accuracy in a hard disk drive, by reducing air pressure fluctuations that would otherwise cause unwanted coil torsion in a voice coil actuator, include a voice coil actuator having a streamlined structure configured to affect the flow of air acting upon a coil-supporting arm. The streamlined structure comprises an upper surface and a lower surface, where the upper surface is sloped downward toward the lower surface and the lower surface is sloped upward toward the upper surface. | 01-08-2015 |
20160189736 | BEARING DEVICE - In order to prevent leaking of lubricant, the bearing device includes a rolling bearing having an outer ring and an inner ring, a shaft fixed to the inner ring, and a sleeve fixed to the outer ring. A flange part is formed on at least one end part of the shaft. The flange part includes a disk part extending from the shaft toward an outside in a radial direction and a cylindrical part extending from the disk part along an axial direction. The cylindrical part is disposed at an outside of the outer ring, and a labyrinth gap which bends at two places is formed by gaps. | 06-30-2016 |
360254200 | Arcuate track change type | 6 |
20140002931 | PIVOT BEARING AND MAGNETIC RECORDING APPARATUS USING THE SAME | 01-02-2014 |
360254700 | Fixed lifter | 5 |
20090195936 | DISK DRIVE SERVOING OFF OF FIRST HEAD WHILE DETERMINING FLY HEIGHT FOR SECOND HEAD - A method is disclosed for selecting a dynamic fly height (DFH) control setting for a head in a disk drive, the disk drive comprising a plurality of disk surfaces and plurality of respective heads. The method comprises servoing a first head over a first disk surface in response to servo data recorded on the first disk surface, adjusting a DFH control setting for a second head, and while servoing the first head over the first disk surface, detecting whether the second head has contacted a second disk surface. | 08-06-2009 |
360254800 | Lifter surface detail | 4 |
20080285175 | DISK DEVICE - According to one embodiment, a magnetic disk device includes a case provided with a base and a top cover. On the base in the case are arranged a motor, a disk-shaped recording medium rotatably supported on the motor, a head, a head actuator which supports the head for movement with respect to the recording medium, and a ramp load mechanism. The ramp load mechanism includes a ramp arranged on the outer peripheral side of the recording medium, and an engaging portion which extends from the head actuator and is configured to run on the ramp when the head is moved to the outer peripheral portion of the recording medium. The ramp has a recess and an elastically deformable bridge portion which straddles the recess and being fixed between the base and the top cover with the bridge portion elastically pressed against the pressing portion of the top cover. | 11-20-2008 |
20080285176 | STORAGE DEVICE - A storage device includes a head configured to record information in or reproduce the information from a recording medium, a suspension configured to support the head, a lift tab provided onto the suspension, a ramp, which the lift tab elastically contacts, the lift tab being configured to slide on the ramp, the ramp being configured to support the lift tab so as to hold the head at a position apart from the recording medium in loading the head over the recording medium and in unloading the head from the recording medium, and a heating member provided outside the ramp at a position close to the ramp. | 11-20-2008 |
20090052091 | Monitoring a fly height of a magnetic transducer - A method for monitoring a fly height of a magnetic transducer comprises flying the magnetic transducer at a distance of separation from a recording media. A read-back signal is read with the magnetic transducer from the recording media. The read-back signal is rectified to produce a rectified signal. The rectified signal is filtered thereby providing a filtered signal. A fault signal is provided in response to the filtered signal exceeding a threshold. | 02-26-2009 |
20090303637 | DISK DRIVE HAVING A HEAD LOADING/UNLOADING RAMP THAT INCLUDES A TORSIONALLY-COMPLIANT MEMBER - A disk drive includes a ramp having a fixed portion that is fixed to the disk drive base, and a guide portion that is not. The guide portion includes a guide surface having a parking region that is in contact with an HGA lift-tab with the disk drive in a non-operational state. The guide surface also has a load/unload region that extends over a disk outer periphery. The guide surface defines a guide surface length that is measured from the parking region to the load/unload region. The ramp also includes a torsionally-compliant member connecting the fixed portion to the guide portion. A distance between the torsionally-compliant member and the parking region, measured approximately parallel to the guide surface length, is less than half the guide surface length. The guide portion is not connected to the fixed portion over at least two-thirds of the guide surface length. | 12-10-2009 |
360256000 | Latch | 28 |
20090059433 | ACTUATOR LATCH SYSTEM OF HARD DISK DRIVE - An actuator latch system of a hard disk drive keeps an actuator of the hard disk drive in place in a state in which a read/write head mounted to a swing arm of the actuator is parked. The latch system has first and second protrusions at upper and lower parts of a rear end portion of the swing arm, and a latch lever having first and second hooks at upper and lower parts of a leading end of the lever. The latch lever, like the actuator, is mounted to a base of the hard disk drive so as to be rotatable about a respective axis. The first hook engages the first protrusion of the swing arm when the arm is inadvertently rotated in a first direction to arrest such inadvertent rotation, and the second hook engages the second protrusion of the swing arm when the arm rotates for a second time in the first direction due to rebounding that occurs in the latch system after the first protrusion and the first hook collide. | 03-05-2009 |
20090207530 | Disk drive device and magnetic disk drive - Embodiments of the present invention securely latch an actuator rotated by an external impact. In an embodiment of the present invention, a latch and an actuator have a structure in which the latch can latch the actuator at two different swing angles. The swing angle of the latch is an angle in rotation centered on a rotational shaft (rotation angle). The latch may be engaged with the actuator at a shallow angle, or the latch may be engaged with the actuator at a deeper angle. Since the latch is able to latch the actuator at different swing angles, the actuator can be securely latched. | 08-20-2009 |
20100284113 | ACTUATOR LATCH FOR MINIMIZING EFFECT OF NON-OPERATIONAL ROTARY SHOCK IN A LOAD-UNLOAD (LUL) HARD DISK DRIVE - This application discloses a Load-UnLoad (LUL) hard disk drive comprising a disk base, a spindle motor mounted on the disk base for rotating at least one disk to create at least one rotating disk surface, and a head stack assembly pivotably coupled to the disk base and configured to engage an actuator latch when the sliders of the head stack assembly are to be parked. The actuator latch includes a latch beam coupled through a latch pivot to the disk base and a boss coupled to the latch beam and configured to limit the stroke of latch motion in the event of a rotary non-operational shock. | 11-11-2010 |
20100290161 | LATCH ASSEMBLY FOR A HEAD OR HEAD ASSEMBLY - A soft or passive latch to control a position of a head relative to a data storage media is disclosed. In illustrated embodiments, the latch provides a dwell point or region along the flex circuit assembly. In illustrated embodiments, the dwell point or region corresponds to alignment of the head in a middle region of the media. In illustrated embodiment, the latch is formed of a lower or reduced bending stiffness region, which in illustrated embodiment is formed via a cut-out, contoured, or reduced width portion of a constraint layer damper or other layer(s) along the flex circuit assembly. | 11-18-2010 |
20110205670 | Magnetic Head Slider Locking Apparatus - In the magnetic head slider locking apparatus according to the present invention, a spring portion takes a sandwiching posture in which a center region of a proximal-side engage portion sandwiches a magnetic head slider in a suspension longitudinal direction in cooperation with a distal-side engage portion when an operational force to the spring portion is released after the magnetic head slider has been mounted in a state where the spring portion has been elastically deformed from an initial posture to an elastically deformed posture. Paired arm are elastically deformed by paired side regions of the proximal-side engage portion that are moved upon posture change of the spring portion from the initial posture to the elastically deformed posture so as to take a distant posture in which a distance between the paired arm portions is wider than the width of the magnetic head slider, and are shifted to take a sandwiching posture of sandwiching the magnetic head slider from both sides in the suspension width direction upon posture change of the spring portion from the elastically deformed posture to the sandwiching posture. | 08-25-2011 |
20150318016 | STORAGE DEVICE WITH A COVER SUPPORTING PORTION - A disk drive assembly having a base; a voice coil motor assembly (VCM) comprising a VCM cover; a post extending from the base toward the VCM cover; and a latch movable mounted on the post such that the post extends there through, wherein the post comprises a cover supporting portion configured to support the VCM cover, and prevent the VCM cover from compressing the latch and causing the latch to contact both the VCM cover and the base simultaneously when a load is applied to a portion of the VCM cover above the latch. | 11-05-2015 |
360256100 | Air vane | 1 |
20090323226 | INFORMATION STORAGE DEVICE - An information storage device that includes: a housing; a disc-shaped recording medium to record data thereon, rotating along a disc surface to generate a wind inside the housing; a head capable of recording and/or reproducing data on and/or from the recording medium; an arm holding the head on its tip end and held by a rotary shaft, the arm rotating about the rotary shaft to move the head along the disc surface; a coil including multiple turns in a plane where the arm rotates, and receiving current supply, the coil fixed to the opposite end of the arm; a magnet generating magnetic field to act on the coil; and an airflow adjusting plate placed adjacent and upstream to the coil along the wind generated by rotation of the recording medium, extending in the plane where the coil includes turns and adjusting flow of the wind to travel along the coil. | 12-31-2009 |
360256200 | Magnetic | 19 |
20090073614 | Voice Coil Motor - A voice coil motor has an arm for arcuate movement about a pivot, and a coil at one end of the arm. There is a permanent magnet mounted adjacent the coil. The permanent magnet has only one pole facing, and for operational co-operation with, the coil. The coil has a centre of mass and a geometric centre. The center of mass and the geometric centre are coincident. The coil is mounted to the arm perpendicular to a movement plane of the arm for the arcuate movement. | 03-19-2009 |
20090086376 | Actuator latching mechanism for magnetic disk drive - Embodiments of the present invention provide an inexpensive latching mechanism having a necessary and sufficient function to hold an actuator of a magnetic disk drive and including a latch formed in a one-piece structure. According to one embodiment, a latching mechanism for a magnetic disk drive includes a latch lever, a hook, for latching an actuator, extending vertically downward from the latch lever, and a bar, to be pressed by an actuator at its home position in a closing direction, extending vertically downward from the latch arm. A steel pin is attached to the latch lever to urge the latch in an opening direction by a magnetic force. | 04-02-2009 |
20090109575 | Magnetic latch assembly - A magnetic latch assembly | 04-30-2009 |
20090128961 | DISK APPARATUS - In a disk apparatus, an actuator includes a magnetic plate member which generates a magnetic attraction force for turning the actuator in the unloading direction by interaction with a stationary magnet. The plate member is superposed on the stationary magnet in the plane direction while keeping a gap with the stationary magnet in the vertical direction. An area of the plate member superposed on the stationary magnet is increased as the actuator turns in the unloading direction and approaches the outer stopper. When the actuator approaches the outer stopper, the stationary magnet gives, to the plate member, a magnetic attraction force of such an intensity that brings the actuator on the outer stopper against a friction force applied to the actuator. | 05-21-2009 |
20090154023 | Electromagnetic damping locking apparatus for the disk drive unit - An electromagnetic damping apparatus for locking an actuator for a head stack assembly including at least one read/write head thereon is provided. In certain example embodiments, the electromagnetic damping apparatus may comprise a magnetic element and a metal element that cooperate in response to an electromagnetic field created by a current (e.g. an eddy current) to lock the actuator in a predetermined position. One of said magnetic element and said metal element may be fixed, and the other one may be movable by said actuator. The damping apparatus may be operable to selectively apply the current to lock the actuator by preventing the magnetic element and the metal element from moving apart. Certain electromagnetic damping apparatuses may be used with a disk drive device. | 06-18-2009 |
20090161260 | STORAGE APPARATUS AND RETRACTION MECHANISM FOR HEAD ACTUATOR THEREOF - A retraction mechanism for a head actuator having a head at the end thereof includes a metal piece that is attached to a coil arm, a stopper, and a magnet. The metal piece is configured to be attracted to the stopper with a magnetic force exerted by the magnet to retract the head outside the outer periphery of a storage medium. The metal piece is attached in contact with a surface of the coil arm other than the one facing the stopper. | 06-25-2009 |
20090168250 | DISK DRIVE APPARATUS - According to one embodiment, a disk drive apparatus includes a base, a recording medium, a drive motor, a head, a carriage, and a latch mechanism. The latch mechanism includes a latch member, which is supported on the base to be movable between a latch position and a release position, and a latch stop provided on the base and configured to regulate the movement of the latch member in a direction of the latch position. The latch member has a first abutment portion which abuts the carriage and moves the latch member from the release position to the latch position according to the movement of the carriage, when the carriage moves from the information processing position to the retracted position, a latch hook capable of latching the carriage at the latch position, and a second abutment portion which confronts to the latch hook with a gap at the latch position. | 07-02-2009 |
20090168251 | DISK DRIVE APPARATUS - According to one embodiment of the invention, a disk drive apparatus includes a case, a disk-shaped recording medium, a drive motor, a head, a head actuator, and a latch mechanism configured to latch the head actuator and hold the head actuator at a retracted position when the head actuator receives an external force. A latch member of the latch mechanism is arranged to be movable between a latch position and a release position and has an abutment portion, which abuts the head actuator when the head actuator moves from the information processing position to the retracted position, and a latch claw which latches the head actuator. The abutment portion has a first abutment portion, which abuts the head actuator first, and a second abutment portion, which abuts the head actuator following the first abutment portion, and the first abutment portion being formed less rigid than the second abutment portion. | 07-02-2009 |
20090195937 | Actuator latch apparatus for disk drive - An actuator latch apparatus for a disk drive, having a notch positioned at a first end portion of the swing arm, a latch lever rotatably installed in a base member, a first core provided on a second end portion of the swing arm, and a second core provided at a counterbalance of the latch lever. The first and second cores apply a torque to the swing arm and latch lever, respectively, in a first direction by a magnetic force of the magnet. The latch lever has a latch pivot, a latch arm provided at a first side of the latch pivot and having a hook to be caught by the notch when the actuator is locked, and the counterbalance provided on a second side of the latch pivot. The latch arm of the latch lever is elastically deformed when contacted by the swing arm during parking of the head. | 08-06-2009 |
20090213500 | ACTUATOR LATCH SYSTEM OF HARD DISK DRIVE - An actuator latch system of a hard disk drive selectively locks in place and releases a rotatable swing arm having a front end portion supporting a magnetic head and a rear end portion on which a voice coil motor (VCM) coil is disposed. The actuator latch system includes a notch in the rear end portion of the swing arm, and a rotatable latch lever having a front end portion including a hook and a magnet. The hook is received in the notch in the rear end potion of the swing arm to arrest rotation of the swing arm in a predetermined direction. The magnet of the latch lever faces a section of the VCM coil such that when the hard disk drive is started, the latch lever is rotated by a force generated due to current flowing through the section of the VCM coil faced by the magnet and the magnetic field generated by the magnet. The rotation of the latch lever prevents the hook form interfering with the rotation of the swing arm in the predetermined direction. | 08-27-2009 |
20100007994 | RECORDING DISK DRIVE AND LATCH DEVICE - According to one embodiment, a recording disk drive includes a head actuator assembly, a voice coil motor, a housing, a step, a latch lever, a latch member, and first and second contact pieces. The head actuator assembly supports a head slider. The housing houses defines a flat surface for receiving the voice coil motor. The step is connected to one end of the flat surface and defines a stepped surface expanding parallel to the flat surface. The latch lever is rotatably supported by a first shaft. The latch member is rotatably supported by a second shaft, and rotate between a first posture and a second posture. The first and second contact pieces on the latch member cause the latch member to rotate about the second shaft toward the first posture by contact with the latch lever rotating in first and second directions, respectively. | 01-14-2010 |
20100014194 | ACTUATOR LATCH MECHANISM AND HARD DISK INCLUDING THE SAME - An actuator latch mechanism of a hard disk drive (HDD) includes a latch lever and a magnetic latch carried by the latch lever. The latch lever is mounted to a base of the HDD so as to be rotatable and prevents an actuator arm from rotating from a position, at which a read/write head carried by the actuator arm is parked, to a read/write position at which the read/write head is located over a recording surface of a disk. A bobbin on which a VCM coil is provided extends from a rear end of the actuator arm. A permanent magnet of the VCM is fixed to the base as juxtaposed with the bobbin. The magnetic latch is carried by an arm of the latch lever and interacts with the (magnetic field generated by) the permanent magnet of the VCM to generate a net force which cause the latch lever to latch the actuator arm in place when current is not being supplied to the VCM coil, and interacts with both the (magnetic field generated by) the permanent magnet of the VCM and (the electromagnetic field generated by) the VCM coil when current is supplied to the VCM coil to produce a net force that causes the latch lever to release the actuator arm. | 01-21-2010 |
20100149694 | DISK DEVICE - According to an embodiment, a disk device includes a latch mechanism configured to retract a head on a distal end portion of an actuator to a ramp mechanism and latch a ferromagnetic member disposed on the actuator on the side of a motor coil by a latch magnet, a shaft protruding from that part of a base of the disk device which is located near the latch mechanism, and a rotary lever pivotably mounted on the shaft. The rotary lever includes a first arm on the disk side being extended over the disk so that the rotary lever is rotated by a pressure of airflow produced as the disk rotates, and a second arm on the latch magnet side configured to move as the rotary lever is rotated by the airflow pressure, to weaken magnetic coupling between the latch magnet and the ferromagnetic member. | 06-17-2010 |
20100246069 | HARD DISK DRIVE - An HDD includes a head stack assembly, a voice coil motor, and a retracting pin unit. The retracting pin unit includes a mobile retracting pin generating a retracting force to maintain the actuator arm at a predetermined position by interacting with the magnet when the read/write head is parked, and coupled to the bobbin to be capable of relatively moving with respect to the bobbin toward the magnet when the bobbin is separated from the magnet due to an external shock. A head on disk phenomenon, in which the parking state of the read/write head is removed when an external shock such as a linear shock or a rotary shock, which may be generated as the HDD is installed in a notebook computer, is applied to the HDD, may be reduced. | 09-30-2010 |
20100328821 | HARD DISK DRIVE - A hard disk drive includes an actuator arm pivoting over a disk around a pivot shaft as a center of rotation to allow a read/write head to access data on the disk, a bobbin provided at the opposite side to the read/write head with respect to a pivot shaft holder that rotatably supports the pivot shaft, and a voice coil coupled to the bobbin. The bobbin includes a bobbin body coupled an end portion of the voice coil adjacent to the pivot shaft holder, and a plurality of bobbin legs extending from an end portion of the bobbin body toward areas of the other end portion of the voice coil that are separated from each other, and coupled to the areas of the other end portion of the voice coil that are separated from each other. | 12-30-2010 |
20110096442 | HARD DISK DRIVE - A hard disk drive includes a base, an actuator arm pivotably installed on the base, and a latch device to latch the actuator arm at a parking position. The latch device includes a latch stop that protrudes from a side wall of the base and has an inclined surface, and a latch lever pivotably installed on the base and contacts and slides along the inclined surface of the latch stop during the rotation in an unlatching direction. | 04-28-2011 |
20110109997 | DISK DRIVE INCLUDING A LATCH CONFIGURED TO LOCK AN ACTUATOR IN RESPONSE TO AN EXTERNAL FORCE - A disk drive. The disk drive includes: a head for accessing a data recording area of a disk; an actuator for pivoting to move the head; a voice coil motor; and, a latch configured to lock the actuator from pivoting toward the data recording area in response to an external force. The voice-coil motor includes a voice coil, a magnet, and a yoke. The latch is positioned at a closed position when the actuator is positioned at a stand-by position, and is configured to pivot by application of a magnetic bias force with pivoting of the actuator from the stand-by position into proximity with the data recording area such that the latch is configured to stop at an open position. The yoke includes a protrusion which protrudes toward the magnetic body at the open position. | 05-12-2011 |
20110194210 | ACTUATOR LATCH APPARATUS AND HARD DISK DRIVE HAVING THE SAME - Provided are an actuator latch apparatus and a hard disk drive (HDD) having the actuator latch apparatus. The HDD includes a spindle motor, a data storage disk which is installed on the spindle motor, an actuator which moves a read/write head to a desired position above the data storage disk, and the actuator latch apparatus which locks the actuator in a parking position. The actuator latch apparatus includes a notch which is formed at a rear end of a swing arm and a latch lever which is combined with and pivots on a pivot shaft installed on a base. A retractor member is installed on one of upper and lower surfaces of a counterbalance which is adjacent to a magnet, wherein the counterbalance is formed at a rear end of the latch lever. When the read/write head operates, the latch lever contacts an upper yoke or the base due to a vertical component force of a magnetic force working from the magnet to the retractor member, thereby liming a vertical vibration of the latch lever. | 08-11-2011 |
20110194211 | DISK DRIVE - According to one embodiment, a disk drive includes a rotatable carriage which supports a head configured to read information from a disk recording medium and to write data to the a disk recording medium, and a latch mechanism configured to latch and hold the carriage in a retracted position when subjected to an external force with the carriage in the retracted position. The latch mechanism includes an engaging portion on the carriage, a first latch pivotably provided on a base in a first mode and includes a latch lug configured to engage the engaging portion, and a second latch pivotably provided on the base in a second mode different from the first mode and includes a latch lug configured to engage the engaging portion. | 08-11-2011 |
360256400 | Inertial | 1 |
20080204940 | Recording medium drive and latch member for recording medium drive - This recording medium drive has an actuator member which rotationally moves around a first shaft, a latch stop member fixed to the housing, and a latch member which rotationally moves around a second shaft. The actuator member, having a locked member, and the latch member has a locking member which restrains the rotational movement of the actuator member and a coefficient of repulsion between the latch stop member and the latch member is a coefficient of repulsion such that, in the event that the housing receives an impact when the actuator is in a standby state, the locking member of the latch member reaches a lockable rotation angle before the locked member of the actuator member reaches the lockable rotation angle. In the event that various impacts are applied, it is possible to prevent the actuator member from jumping out to the recording medium. | 08-28-2008 |
360256500 | Plural latches | 1 |
20110267719 | Magnetic Head Slider Locking Apparatus - The magnetic head slider locking apparatus according to the present invention includes a fixed portion, a movable portion and paired right and left spring portions. Upon transition from an initial posture to an elastically deformed posture, the movable portion is wholly moved toward the proximal side in the suspension longitudinal direction and, at the same time, the inner end of each of paired proximal-side engagement regions in the suspension width direction is moved toward the inner side in the suspension width direction, so that the distal end and the proximal end of each of the proximal-side extending regions are moved toward the inner side and the outer side in the suspension width direction, respectively, while the proximal-side extending regions are wholly moved toward the proximal side in the suspension longitudinal direction. | 11-03-2011 |