READY-TO-ASSEMBLE HOUSE

Abstract

A ready-to-assemble house having sufficient strength is provided. A ready-to-assemble house includes wall members that are made of cardboard or heavy paper. A side end portion of the wall member is fixed to a side end portion of the wall member. A side end portion of the wall member is fixed to a side end portion of the wall member. A side end portion and a side end portion of the wall member are respectively connected to a side end portion of the wall member and a side end portion of the wall member. The wall member is configured such that the side end portion becomes shaped as a rectangular column by being folded along folding lines.

Description

CROSS REFERENCE TO RELATED APPLICATION

[0001] This is a Continuation of International Application No. PCT/JP2013/082342 filed Dec. 2, 2013, which claims the benefit of Japanese Application No. 2013.190664 filed Sep. 13, 2013. The contents of these applications are hereby incorporated by reference in their entirety.

TECHNICAL FIELD

[0002] The present invention relates to a ready-to-assemble house made of paper.

BACKGROUND ART

[0003] When a disaster such as an earthquake has occurred, there are cases where a large number of disaster victims are forced to live together in a single evacuation shelter. In order to relieve the psychological burden on the disaster victims even a small amount at such an evacuation shelter, there is desire to retain private space for the disaster victims. A means for retaining such private space is disclosed in Patent Literature 1, for example. This literature discloses the creation of partitions by folding a single piece of cardboard in order to divide the space between disaster victims.

CITATION LIST

Patent Literature

[0004] [PLT 1] JP 2010-255238A

SUMMARY OF INVENTION

Technical Problem

[0005] The partitions in Patent Literature 1 retain a minimum level of private space, which makes it possible to relieve the psychological burden on disaster victims to a certain extent. However, due to these partitions being made of cardboard, concern remains about strength. These concerns about strength lead to an increased psychological burden on the disaster victims.

Solution to Problem

[0006] The present invention was achieved in light of the aforementioned issues, and an object thereof is to provide a ready-to-assemble house that has sufficient strength.

[0007] A ready-to-assemble house according to the present invention includes: first to fourth plate-shaped members made of cardboard or heavy paper, wherein the first plate-shaped member has a plurality of folding lines in a first side end portion and is configured such that the first side end portion becomes shaped as a column having n sides (n being an integer greater than or equal to 3) by being folded along the folding lines, the second plate-shaped member is configured such that a first side end portion is fixed to a second side end portion of the first plate-shaped member, the third plate-shaped member is configured such that a first side end portion is fixed to a second side end portion of the second plate-shaped member, and the fourth plate-shaped member is configured such that a first side end portion is fixed to a second side end portion of the third plate-shaped member, and a second side end portion is fixed to the first side end portion of the first plate-shaped member.

[0008] In this ready-to-assemble house, the first side end portion of the second plate-shaped member is fixed to the second side end portion of the first plate-shaped member, the first side end portion of the third plate-shaped member is fixed to the second side end portion of the second plate-shaped member, the first side end portion of the fourth plate-shaped member is fixed to the second side end portion of the third plate-shaped member, and the second side end portion of the fourth plate-shaped member is fixed to the first side end portion of the first plate-shaped member, thus forming the space surrounded by the first to fourth plate-shaped members. Accordingly, it is possible to retain sufficient private space. Furthermore, the first side end portion of the first plate-shaped member can become shaped as a column having n sides by the first side end portion being folded along the folding lines. This side end portion functions as a support column and raises the strength of the ready-to-assemble house after assembly.

Advantageous Effects of Invention

[0009] According to the present invention, a ready-to-assemble house having sufficient strength is realized.

BRIEF DESCRIPTION OF DRAWINGS

[0010] FIG. 1 is a perspective view of a first embodiment of a ready-to-assemble house according to the present invention.

[0011] FIG. 2 is a plan view of the ready-to-assemble house in FIG. 1.

[0012] FIG. 3 is a plan view of a wall member 10 in FIG. 1.

[0013] FIG. 4 is a plan view of a wall member 20 in FIG. 1.

[0014] FIG. 5 is a plan view of a wall member 30 in FIG. 1.

[0015] FIG. 6 is a plan view of a wall member 40 in FIG. 1.

[0016] FIG. 7 is a plan view of a roof member 50 in FIG. 1.

[0017] FIG. 8 is a perspective view of a second embodiment of a ready-to-assemble house according to the present invention.

[0018] FIG. 9 is a plan view of the ready-to-assemble house in FIG. 8.

[0019] FIG. 10 is a plan view of a wall member 610 in FIG. 8.

[0020] FIG. 11 is a plan view of a wall member 620 in FIG. 8.

[0021] FIG. 12 is a plan view of a wall member 710 in FIG. 8.

[0022] FIG. 13 is a plan view of a wall member 720 in FIG. 8.

[0023] FIG. 14 is a diagram for describing a variation of the present invention.

DESCRIPTION OF EMBODIMENTS

[0024] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that in the description of the drawings, like elements are denoted by like reference numerals, and redundant descriptions are omitted.

First Embodiment

[0025] FIG. 1 is a perspective view of a first embodiment of a ready-to-assemble house according to the present invention. Also, FIG. 2 is a plan view of the ready-to-assemble house in FIG. 1. A ready-to-assemble house 1 includes a wall member 10 (first plate-shaped member), a wall member 20 (second plate-shaped member), a wall member 30 (third plate-shaped member), and a wall member 40 (fourth plate-shaped member), and has a space S1 surrounded by these wall members 10, 20, 30, and 40. The size of the space S1 is, for example, approximately 1 m in width (the gap between the wall member 20 and the wall member 40), approximately 1.3 m in depth (the gap between the wall member 10 and the wall member 30), and approximately 2 m in height. This ready-to-assemble house 1 can be used as an enclosure for when disaster victims relieve themselves at an evacuation shelter, for example. The wall members 10, 20, 30, and 40 are each made of cardboard or heavy paper.

[0026] The ready-to-assemble house 1 further includes a roof member 50 (fifth plate-shaped member) that covers the space S1 from above. The roof member 50 is also made of cardboard or heavy paper.

[0027] The wall member 20 is configured such that a side end portion 20a (first side end portion) is fixed to a side end portion 10b (second side end portion) of the wall member 10. The wall member 30 is configured such that a side end portion 30a (first side end portion) is fixed to a side end portion 20b (second side end portion) of the wall member 20. Also, the wall member 40 is configured such that a side end portion 40a (first side end portion) is fixed to a side end portion 30b (second side end portion) of the wall member 30, and a side end portion 40b (second side end portion) is fixed to a side end portion 10a (first side end portion) of the wall member 10.

[0028] FIG. 3 is a plan view of the wall member 10. The wall member 10 is made of one piece of cardboard or heavy paper and has a horizontally symmetrical structure. Four folding lines L11a to L14a are formed in the side end portion 10a of the wall member 10. The wall member 10 is configured such that the side end portion 10a is formed into a rectangular column by being folded along these folding lines L11a to L14a. Specifically, the side end portion 10a is formed into a rectangular column by mountain-folding it along the folding lines L11a to L14a at approximately right angles (see FIGS. 1 and 2).

[0029] Furthermore, cut lines C11a and C12a are formed in the side end portion 10a. The cut lines C11a are formed between the folding line L11a and the outer periphery of the wall member 10. The cut lines C12a are formed between the folding line L11a and the folding line L12a. Also, hole portions 18a are formed in the side end portion 10a. Here, the gap between the folding line L11a and the folding line L12a is approximately equal to the gap between the folding line L13a and the folding line L14a. Similarly, the gap between the folding line L12a and the folding line L13a is approximately equal to the gap between the folding line L14a and the hole portions 18a.

[0030] Claw portions 14a and 16a are formed by cutting along the cut lines C11a and C12a and then folding the side end portion 10a along the folding lines L11a to L14a. During assembly, the claw portions 14a are, along with later-described claw portions 44b of the wall member 40, inserted into the hole portions 18a (see FIG. 1). Also, the claw portions 16a are inserted into later-described hole portions 48b of the wall member 40. Accordingly, in the ready-to-assemble house 1 after assembly, the rectangular column shape of the side end portion 10a is maintained, and the side end portion 10a of the wall member 10 and the side end portion 40b of the wall member 40 are fixed to each other.

[0031] Folding lines L11b to L14b are formed in the side end portion 10b of the wall member 10. The wall member 10 is configured such that the side end portion 10b is formed into a rectangular column by being folded along these folding lines L11b to L14b. Specifically, the side end portion 10b is formed into a rectangular column by mountain-folding it along the folding lines L11b to L14b at approximately right angles (see FIGS. 1 and 2).

[0032] Furthermore, cut lines C11b and C12b are formed in the side end portion 10b. The cut lines C11b are formed between the folding line L11b and the outer periphery of the wall member 10. The cut lines C12b are formed between the folding line L11b and the folding line L12b. Also, hole portions 18b are formed in the side end portion 10b. Here, the gap between the folding line L11b and the folding line L12b is approximately equal to the gap between the folding line L13b and the folding line L14b. Similarly, the gap between the folding line L12b and the folding line L13b is approximately equal to the gap between the folding line L14b and the hole portions 18b.

[0033] Claw portions 14b and 16b are formed by cutting along the cut lines C11b and C12b and then folding the side end portion 10b along the folding lines L11b to L14b. During assembly, the claw portions 14b are, along with later-described claw portions 24a of the wall member 20, inserted into the hole portions 18b (see FIG. 1). Also, the claw portions 16b are inserted into later-described hole portions 28a of the wall member 20. Accordingly, in the ready-to-assemble house 1 after assembly, the rectangular column shape of the side end portion 10b is maintained, and the side end portion 10b of the wall member 10 and the side end portion 20a of the wall member 20 are fixed to each other.

[0034] A folding line L15 and a cut line C13 are formed in the central portion of the wall member 10. A door 12 is obtained by cutting along the cut line C13. The door 12 is opened by folding it along the folding line L15, thus making it possible to enter and exit the space S1 (see FIG. 1).

[0035] FIG. 4 is a plan view of the wall member 20. The wall member 20 is made of one piece of cardboard or heavy paper and has a horizontally symmetrical structure. Claw portions 24a and hole portions 28a are formed in a side end portion 20a of the wall member 20. The claw portions 24a are formed so as to protrude from the outer periphery of the wall member 20. A gap d21 between the hole portions 28a and the outer periphery of the wall member 20 is approximately equal to the gap between the folding line L11b and the folding line L12b in the wall member 10. During assembly, the claw portions 24a are inserted into the hole portions 18b of the wall member 10. Also, the claw portions 16b of the wall member 10 are inserted into the hole portions 28a.

[0036] Claw portions 24b and hole portions 28b are formed in a side end portion 20b of the wall member 20. The claw portions 24b are formed so as to protrude from the outer periphery of the wall member 20. A gap d22 between the hole portions 28b and the outer periphery of the wall member 20 is approximately equal to the gap between later-described folding lines L31a and L32a in the wall member 30. During assembly, the claw portions 24b are inserted into later-described hole portions 38a of the wall member 30. Also, later-described claw portions 36a of the wall member 30 are inserted into the hole portions 28b.

[0037] FIG. 5 is a plan view of the wall member 30. The wall member 30 is made of one piece of cardboard or heavy paper and has a horizontally symmetrical structure. The structure of the wall member 30 is the same as the structure of the wall member 10, with the exception that the folding line L15 and the cut line C13 are not formed. Specifically, four folding lines L31a to L34a are formed in a side end portion 30a of the wall member 30. The wall member 30 is configured such that the side end portion 30a is formed into a rectangular column by being folded along these folding lines L31a to L34a. Specifically, the side end portion 30a is formed into a rectangular column by mountain-folding it along the folding lines L31a to L34a at approximately right angles (see FIGS. 1 and 2).

[0038] Furthermore, cut lines C31a and C32a are formed in the side end portion 30a. The cut lines C31a are formed between the folding line L31a and the outer periphery of the wall member 30. The cut lines C32a are formed between the folding line L31a and the folding line L32a. Also, hole portions 38a are formed in the side end portion 30a. Here, the gap between the folding line L31a and the folding line L32a is approximately equal to the gap between the folding line L33a and the folding line L34a. Similarly, the gap between the folding line L32a and the folding line L33a is approximately equal to the gap between the folding line L34a and the hole portions 38a.

[0039] Claw portions 34a and 36a are formed by cutting along the cut lines C31a and C32a and then folding the side end portion 30a along the folding lines L31a to L34a. During assembly, the claw portions 34a are, along with the claw portions 24b of the wall member 20, inserted into the hole portions 38a. Also, the claw portions 36a are inserted into the hole portions 28b of the wall member 20. Accordingly, in the ready-to-assemble house 1 after assembly, the rectangular column shape of the side end portion 30a is maintained, and the side end portion 30a of the wall member 30 and the side end portion 20b of the wall member 20 are fixed to each other.

[0040] Folding lines L31b to L34b are formed in the side end portion 30b of the wall member 30. The wall member 30 is configured such that the side end portion 30b is formed into a rectangular column by being folded along these folding lines L31b to L34b. Specifically, the side end portion 30b is formed into a rectangular column by mountain-folding it along the folding lines L31b to L34b at approximately right angles (see FIGS. 1 and 2).

[0041] Furthermore, cut lines C31b and C32b are formed in the side end portion 30b. The cut lines C31b are formed between the folding line L31b and the outer periphery of the wall member 30. The cut lines C32b are formed between the folding line L31b and the folding line L32b. Also, hole portions 38b are formed in the side end portion 30b. Here, the gap between the folding line L31b and the folding line L32b is approximately equal to the gap between the folding line L33b and the folding line L34b. Similarly, the gap between the folding line L32b and the folding line L33b is approximately equal to the gap between the folding line L34b and the hole portions 38b.

[0042] Claw portions 34b and 36b are formed by cutting along the cut lines C31b and C32b and then folding the side end portion 30b along the folding lines L31b to L34b. During assembly, the claw portions 34b are, along with later-described claw portions 44a of the wall member 40, inserted into the hole portions 38b. Also, the claw portions 36b are inserted into later-described hole portions 48a of the wall member 40. Accordingly, in the ready-to-assemble house 1 after assembly, the rectangular column shape of the side end portion 30b is maintained, and the side end portion 30b of the wall member 30 and the side end portion 40a of the wall member 40 are fixed to each other.

[0043] FIG. 6 is a plan view of the wall member 40. The wall member 40 is made of one piece of cardboard or heavy paper and has a horizontally symmetrical structure. The structure of the wall member 40 is the same as the structure of the wall member 20. Specifically, claw portions 44a and hole portions 48a are formed in a side end portion 40a of the wall member 40. The claw portions 44a are formed so as to protrude from the outer periphery of the wall member 40. A gap d41 between the hole portions 48a and the outer periphery of the wall member 40 is approximately equal to the gap between the folding line L31b and the folding line L32b in the wall member 30. During assembly, the claw portions 44a are inserted into the hole portions 38b of the wall member 30. Also, the claw portions 36b of the wall member 30 are inserted into the hole portions 48a.

[0044] Claw portions 44b and hole portions 48b are formed in a side end portion 40b of the wall member 40. The claw portions 44b are formed so as to protrude from the outer periphery of the wall member 40. A gap d42 between the hole portions 48b and the outer periphery of the wall member 40 is approximately equal to the gap between the folding line L11a and the folding line L12a in the wall member 10. During assembly, the claw portions 44b are inserted into the hole portions 18a of the wall member 10. Also, the claw portions 16a of the wall member 10 are inserted into the hole portions 48b.

[0045] FIG. 7 is a plan view of the roof member 50. Folding lines L51 to L54 are formed in the roof member 50. The lengths of the folding lines L51 and 53 are approximately equal to the width of the space S1 (see FIG. 1). Also, the lengths of the folding lines L52 and 54 are approximately equal to the depth of the space S1.

[0046] A portion 50a outward of the folding line L51 has a trapezoidal shape. Cuts 52a and 52b are formed in the side of the portion 50a that is opposite to the folding line L51. The cut 52a is located on an extension line of the folding line L54, and the cut 52b is located on an extension line of the folding line L52. A distance d51 from the cut opening of the cut 52a to the end of the portion 50a is approximately equal to the gap between the folding line L12a and the folding line L13a in the wall member 10. Similarly, a distance d52 from the cut opening of the cut 52b to the end of the portion 50a is approximately equal to the gap between the folding line L12b and the folding line L13b in the wall member 10.

[0047] A portion 50c outward of the folding line L53 also has a trapezoidal shape. Cuts 52c and 52d are formed in the side of the portion 50c that is opposite to the folding line L53. The cut 52c is located on an extension line of the folding line L52, and the cut 52d is located on an extension line of the folding line L54. A distance d53 from the cut opening of the cut 52c to the end of the portion 50c is approximately equal to the gap between the folding line L32a and the folding line L33a in the wall member 30. Similarly, a distance d54 from the cut opening of the cut 52d to the end of the portion 50c is approximately equal to the gap between the folding line L32b and the folding line L33b in the wall member 30.

[0048] A portion 50b outward of the folding line L52 and a portion 50d outward of the folding line L54 both have a rectangular shape.

[0049] By cutting along the cuts 52a, 52b, 52c, and 52d and folding the roof member 50 along the folding lines L51 to L54, the box-shaped roof member 50 having an open bottom is obtained as shown in FIG. 1. The cut 52a of the roof member 50 is engaged with the portion where the side end portion 40b and the side end portion 10a are connected. The cut 52b is engaged with the portion where the side end portion 10b and the side end portion 20a are connected. The cut 52c is engaged with the portion where the side end portion 20b and the side end portion 30a are connected. Also, the cut 52d is engaged with the portion where the side end portion 30b and the side end portion 40a are connected. Accordingly, the roof member 50 is fixed to the wall members 10, 20, 30, and 40.

[0050] Effects of the ready-to-assemble house 1 will be described below. In the ready-to-assemble house 1, the side end portion 20a of the wall member 20 is fixed to the side end portion 10b of the wall member 10, the side end portion 30a of the wall member 30 is fixed to the side end portion 20b of the wall member 20, the side end portion 40a of the wall member 40 is fixed to the side end portion 30b of the wall member 30, and the side end portion 40b of the wall member 40 is fixed to the side end portion 10a of the wall member 10, thus forming the space S1 surrounded by the wall members 10, 20, 30, and 40. The ready-to-assemble house 1 obtains the space S1 surrounded on four sides in this way, thus making it possible to retain sufficient private space. Accordingly, it is possible to sufficiently protect the privacy of the user of the ready-to-assemble house 1.

[0051] Also, in the present embodiment, the top of the space S1 is also covered by the roof member 50. Accordingly, it is possible to more substantially protect the privacy of the user of the ready-to-assemble house 1.

[0052] Furthermore, the side end portion 10a of the wall member 10 can be formed into a rectangular column by folding it along the folding lines L11a to L14a. This side end portion 10a also functions as a support column and raises the strength of the ready-to-assemble house 1 after assembly. Accordingly, the ready-to-assemble house 1 having sufficient strength is realized.

[0053] In the present embodiment, the side end portion 10b of the wall member 10 can also be formed into a rectangular column by folding it along the folding lines L11b to L14b. Accordingly, the strength of the ready-to-assemble house 1 is raised even further. Similarly, the side end portion 30a of the wall member 30 can be formed into a rectangular column by folding it along the folding lines L31a to L34a, and the side end portion 30b can be formed into a rectangular column by folding it along the folding lines L31b to L34b. These side end portions 30a and 30b also contribute to improvement in the strength of the ready-to-assemble house 1.

[0054] The wall members 10, 20, 30, and 40 and the roof member 50 are made of cardboard or heavy paper. For this reason, the ready-to-assemble house 1 can be easily disposed of. Also, due to cardboard and heavy paper being relatively light-weight, the ready-to-assemble house 1 can be easily transported and moved before and after assembly. In particular, if the wall members 10, 20, 30, and 40 and the roof member 50 are made of cardboard, a ready-to-assemble house 1 having a superior deodorization effect and sound-proofing effect is realized.

[0055] Furthermore, the wall members 10, 20, 30, and 40, and the roof member 50 are each made of a single flat piece of cardboard or heavy paper before assembly. For this reason, it is possible to reduce the amount of space required for storage of the ready-to-assemble house 1 before assembly.

[0056] The ready-to-assemble house 1 is configured to be assembled by folding the wall members 10, 20, 30, and 40 and the roof member 50 along folding lines and cutting them along cut lines. For this reason, a ready-to-assemble house 1 that is easy to assemble is realized.

Second Embodiment

[0057] FIG. 8 is a perspective view of a second embodiment of a ready-to-assemble house according to the present invention. Also, FIG. 9 is a plan view of the ready-to-assemble house in FIG. 8. A ready-to-assemble house 2 includes a wall member 10 (first plate-shaped member), a wall member 60 (second plate-shaped member), a wall member 30 (third plate-shaped member), and a wall member 70 (fourth plate-shaped member), and has a space S2 surrounded by these wall members 10, 60, 30, and 70. The size of the space S2 is, for example, approximately 1 m in width (the gap between the wall member 60 and the wall member 70), approximately 2.4 m in depth (the gap between the wall member 10 and the wall member 30), and approximately 2 m in height. This ready-to-assemble house 2 can be used as an enclosure for when disaster victims sleep at an evacuation shelter, for example. The structures of the wall members 10 and 30 are as described in the ready-to-assemble house 1. The wall members 60 and 70 are each made of cardboard or heavy paper.

[0058] The wall member 60 is constituted by two wall members 610 and 620 (plate-shaped sub members) that can be connected to each other. These wall members 610 and 620 are made of cardboard or heavy paper.

[0059] FIG. 10 is a plan view of the wall member 610. The wall member 610 is made of one piece of cardboard or heavy paper. The structure of the wall member 610 is the same as the structures of the wall member 20 and the wall member 40. Specifically, claw portions 614a and hole portions 618a are formed in a side end portion 610a of the wall member 610. The claw portions 614a are formed so as to protrude from the outer periphery of the wall member 610. A gap d611 between the hole portions 618a and the outer periphery of the wall member 610 is approximately equal to the gap between the folding line L11b and the folding line L12b in the wall member 10. During assembly, the claw portions 614a are inserted into the hole portions 18b of the wall member 10. Also, the claw portions 16b of the wall member 10 are inserted into the hole portions 618a.

[0060] Claw portions 614b and hole portions 618b are formed in a side end portion 610b of the wall member 610. The claw portions 614b are formed so as to protrude from the outer periphery of the wall member 610. A gap d612 between the hole portions 618b and the outer periphery of the wall member 610 is approximately equal to the gap between the folding line L31a and the folding line L32a in the wall member 30. During assembly, later-described claw portions 624a of the wall member 620 are inserted into the hole portions 618b.

[0061] FIG. 11 is a plan view of the wall member 620. The wall member 620 is made of one piece of cardboard or heavy paper. Four folding lines L621 to L624 are formed in a side end portion 620a of the wall member 620. The wall member 620 is configured such that the side end portion 620a is formed into a rectangular column by being folded along these folding lines L621 to L624. Specifically, the side end portion 620a is formed into a rectangular column by valley-folding it along the folding lines L621 to L624 at approximately right angles (see FIGS. 8 and 9).

[0062] Furthermore, cut lines C621 are formed in the side end portion 620a. The cut lines C621 are formed between the folding line L621 and the outer periphery of the wall member 620. Also, hole portions 628a are formed in the side end portion 620a. Here, the gap between the folding line L621 and the folding line L622 is approximately equal to the gap between the folding line L623 and the folding line L624. Similarly, the gap between the folding line L622 and the folding line L623 is approximately equal to the gap between the folding line L624 and the hole portions 628a.

[0063] Claw portions 624a are formed by cutting along the cut lines C621 and then folding the side end portion 620a along the folding lines L621 to L624. During assembly, the claw portions 624a are inserted into the hole portions 628a and the hole portions 618b of the wall member 610. Accordingly, in the ready-to-assemble house 2 after assembly, the rectangular column shape of the side end portion 620a is maintained, and the side end portion 610b of the wall member 610 and the side end portion 620a of the wall member 620 are connected to each other.

[0064] Claw portions 624b and hole portions 628b are formed in a side end portion 620b of the wall member 620. The claw portions 624b are formed so as to protrude from the outer periphery of the wall member 620. A gap d622 between the hole portions 628b and the outer periphery of the wall member 620 is approximately equal to the gap between the folding line L31a and the folding line L32a in the wall member 30. During assembly, the claw portions 624b are inserted into the hole portions 38a of the wall member 30. Also, the claw portions 36a of the wall member 30 are inserted into the hole portions 628b.

[0065] Returning to FIG. 8, the wall member 70 is constituted by two wall members 710 and 720 (plate-shaped sub members) that can be connected to each other. These wall members 710 and 720 are made of cardboard or heavy paper.

[0066] FIG. 12 is a plan view of the wall member 710. The wall member 710 is made of one piece of cardboard or heavy paper. The structure of the wall member 710 is the same as the structures of the wall member 20 and the wall member 40. Specifically, claw portions 714a and hole portions 718a are formed in a side end portion 710a of the wall member 710. The claw portions 714a are formed so as to protrude from the outer periphery of the wall member 710. A gap d711 between the hole portions 718a and the outer periphery of the wall member 710 is approximately equal to the gap between the folding line L31b and the folding line L32b in the wall member 30. During assembly, later-described claw portions 724b of the wall member 720 are inserted into the hole portions 718a.

[0067] Claw portions 714b and hole portions 718b are formed in a side end portion 710b of the wall member 710. The claw portions 714b are formed so as to protrude from the outer periphery of the wall member 710. A gap d712 between the hole portions 718b and the outer periphery of the wall member 710 is approximately equal to the gap between the folding line L11a and the folding line L12a in the wall member 10. During assembly, the claw portions 714b are inserted into the hole portions 18a of the wall member 10. Also, the claw portions 16a of the wall member 10 are inserted into the hole portions 718b.

[0068] FIG. 13 is a plan view of the wall member 720. The wall member 720 is made of one piece of cardboard or heavy paper. Claw portions 724a and hole portions 728a are formed in a side end portion 720a of the wall member 720. The claw portions 724a are formed so as to protrude from the outer periphery of the wall member 720. A gap d721 between the hole portions 728a and the outer periphery of the wall member 720 is approximately equal to the gap between the folding line L31b and the folding line L32b in the wall member 30. During assembly, the claw portions 724a are inserted into the hole portions 38b of the wall member 30. Also, the claw portions 36b of the wall member 30 are inserted into the hole portions 728a.

[0069] Four folding lines L721 to L724 are formed in a side end portion 720b of the wall member 720. The wall member 720 is configured such that the side end portion 720b is formed into a rectangular column by being folded along these folding lines L721 to L724. Specifically, the side end portion 720b is formed into a rectangular column by valley-folding it along the folding lines L721 to L724 at approximately right angles (see FIGS. 8 and 9).

[0070] Furthermore, cut lines C721 are formed in the side end portion 720b. The cut lines C721 are formed between the folding line L721 and the outer periphery of the wall member 720. Also, hole portions 728b are formed in the side end portion 720b. Here, the gap between the folding line L721 and the folding line L722 is approximately equal to the gap between the folding line L723 and the folding line L724. Similarly, the gap between the folding line L722 and the folding line L723 is approximately equal to the gap between the folding line L724 and the hole portions 728b.

[0071] Claw portions 724b are formed by cutting along the cut lines C721 and then folding the side end portion 720b along the folding lines L721 to L724. During assembly, the claw portions 724b are inserted into the hole portions 728b and the hole portions 718a of the wall member 710. Accordingly, in the ready-to-assemble house 2 after assembly, the rectangular column shape of the side end portion 720b is maintained, and the side end portion 710a of the wall member 710 and the side end portion 720b of the wall member 720 are connected to each other.

[0072] Effects of the ready-to-assemble house 2 will be described below. In the ready-to-assemble house 2, the wall member 60 is constituted by the two wall members 610 and 620 that can be connected to each other, and the wall member 70 is constituted by the two wall members 710 and 720 that can be connected to each other. Accordingly, it is possible to increase the depth of the space S2 and retain a large private space.

[0073] Also, in the ready-to-assemble house 2, the size of the space S2 can be changed by attaching or removing the wall members 620 and 720. If the wall members 620 and 720 have been removed, it is sufficient to insert the claw portions 614b of the wall member 610 into the hole portions 38a of the wall member 30, and insert the claw portions 36a of the wall member 30 into the hole portions 618b of the wall member 610. Also, it is sufficient to insert the claw portions 714a of the wall member 710 into the hole portions 38b of the wall member 30, and insert the claw portions 36b of the wall member 30 into the hole portions 718a of the wall member 710.

[0074] Furthermore, the side end portion 620a of the wall member 620 can be formed into a rectangular column by folding it along the folding lines L621 to L624. This side end portion 620a also functions as a support column and raises the strength of the ready-to-assemble house 2 after assembly. Also, the side end portion 720b of the wall member 720 can be formed into a rectangular column by folding it along the folding lines L721 to L724. This side end portion 720b also functions as a support column and raises the strength of the ready-to-assemble house 2 after assembly. Other effects of the ready-to-assemble house 2 are similar to those of the ready-to-assemble house 1. Note that in the ready-to-assemble house 2 as well, a roof member that covers the space S2 from above may be provided similarly to the ready-to-assemble house 1.

[0075] The ready-to-assemble house according the present invention is not limited to the above embodiments, and various variations are possible. For example, the case of providing four support columns (side end portions 10a, 10b, 30a, and 30b) is described in the first embodiment, and the case of providing six support columns (side end portions 10a, 10b, 30a, 30b, 620a, and 720b) is described in the second embodiment. However, the number of support columns can be set to any number greater than or equal to one.

[0076] Cases where the support columns are shaped as rectangular columns are described in the above embodiments. However, the support columns can generally be columns having n sides (n being an integer greater than or equal to 3). Cases where n=4 are described in the above embodiments.

[0077] Cases where a door (door 12) is provided in the wall member 10 are described in the above embodiments. However, the door may be provided in a wall member other than the wall member 10.

[0078] Cases where a structure for inserting claw portions into hole portions is used as the structure for fixing wall members to each other are described in the above embodiments. In order to further strengthen this fixing, a stopper member 82 provided with a cut 82a may be used as shown in FIG. 14. Specifically, a cut 84a is provided in the claw portion 84 as well, and the claw portion 84 can be prevented from coming out of the hole portion 86 by engaging the cut 82a of the stopper member 82 with the cut 84a in the portion of the claw portion 84 protruding from the hole portion 86. Note that another means (e.g., adhering using packaging tape) may be used for the fixing of wall members to each other.

[0079] Also, needless to say, the ready-to-assemble house according to the present invention is also applicable to uses other than retaining private space at an evacuation shelter. For example, the ready-to-assemble house according to the present invention may be used for a play space for children, or may be used for a living space for people living on the streets.

LIST OF REFERENCE NUMERALS

[0080] 1 Ready-to-assemble house

[0081] 2 Ready-to-assemble house

[0082] 10 Wall member (first plate-shaped member)

[0083] 10a Side end portion (first side end portion)

[0084] 10b Side end portion (second side end portion)

[0085] 12 Door

[0086] 14a, 14b Claw portion

[0087] 16a, 16b Claw portion

[0088] 18a, 18b Hole portion

[0089] 20 Wall member (second plate-shaped member)

[0090] 20a Side end portion (first side end portion)

[0091] 20b Side end portion (second side end portion)

[0092] 24a, 24b Claw portion

[0093] 28a, 28b Hole portion

[0094] 30 Wall member (third plate-shaped member)

[0095] 30a Side end portion (first side end portion)

[0096] 30b Side end portion (second side end portion)

[0097] 34a, 34b Claw portion

[0098] 36a, 36b Claw portion

[0099] 38a, 38b Hole portion

[0100] 40 Wall member (fourth plate-shaped member)

[0101] 40a Side end portion (first side end portion)

[0102] 40b Side end portion (second side end portion)

[0103] 44a, 44b Claw portion

[0104] 48a, 48b Hole portion

[0105] 50 Roof member

[0106] 52a, 52b, 52c, 52d Cut

[0107] 60 Wall member (second plate-shaped member)

[0108] 610 Wall member (plate-shaped sub member)

[0109] 610a, 610b Side end portion

[0110] 614a, 614b Claw portion

[0111] 618a, 618b Hole portion

[0112] 620 Wall member (plate-shaped sub member)

[0113] 620a, 620b Side end portion

[0114] 624a, 624b Claw portion

[0115] 628a, 628b Hole portion

[0116] 70 Wall member (fourth plate-shaped member)

[0117] 710 Wall member (plate-shaped sub member)

[0118] 710a, 710b Side end portion

[0119] 714a, 714b Claw portion

[0120] 718a, 718b Hole portion

[0121] 720 Wall member (plate-shaped sub member)

[0122] 720a, 720b Side end portion

[0123] 724a, 724b Claw portion

[0124] 728a, 728b Hole portion

[0125] 82 Stopper member

[0126] 82a Cut

[0127] 84 Claw portion

[0128] 84a Cut

[0129] 86 Hole portion

Claims

1. A ready-to-assemble house comprising: first to fourth plate-shaped members made of cardboard or heavy paper, wherein the first plate-shaped member has a plurality of folding lines in a first side end portion and is configured such that the first side end portion becomes shaped as a column having n sides (n being an integer greater than or equal to 3) by being folded along the folding lines, the second plate-shaped member is configured such that a first side end portion is fixed to a second side end portion of the first plate-shaped member, the third plate-shaped member is configured such that a first side end portion is fixed to a second side end portion of the second plate-shaped member, and the fourth plate-shaped member is configured such that a first side end portion is fixed to a second side end portion of the third plate-shaped member, and a second side end portion is fixed to the first side end portion of the first plate-shaped member.

2. The ready-to-assemble house according to claim 1, wherein the first plate-shaped member has a plurality of folding lines in the second side end portion and is configured such that the second side end portion becomes shaped as a column having n sides by being folded along the folding lines.

3. The ready-to-assemble house according to claim 1, wherein the third plate-shaped member has a plurality of folding lines in the first side end portion and is configured such that the first side end portion becomes shaped as a column having n sides by being folded along the folding lines.

4. The ready-to-assemble house according to claim 1, wherein the third plate-shaped member has a plurality of folding lines in the second side end portion and is configured such that the second side end portion becomes shaped as a column having n sides by being folded along the folding lines.

5. The ready-to-assemble house according to claim 1, wherein the second plate-shaped member is constituted by two plate-shaped sub members that can be connected to each other, and the fourth plate-shaped member is constituted by two plate-shaped sub members that can be connected to each other.

6. The ready-to-assemble house according to claim 5, wherein at least one of the two plate-shaped sub members constituting the second plate-shaped member has a plurality of folding lines in a side end portion that is connected to another one of the two plate-shaped sub members, and is configured such that the side end portion becomes shaped as a column having n sides by being folded along the folding lines.

7. The ready-to-assemble house according to claim 5, wherein at least one of the two plate-shaped sub members constituting the fourth plate-shaped member has a plurality of folding lines in a side end portion that is connected to another one of the two plate-shaped sub members, and is configured such that the side end portion becomes shaped as a column having n sides by being folded along the folding lines.

8. The ready-to-assemble house according to claim 1, further comprising a fifth plate-shaped member that is made of cardboard or heavy paper and covers, from above, a space surrounded by the first to fourth plate-shaped members.

9. The ready-to-assemble house according to claim 8, wherein the fifth plate-shaped member has a plurality of folding lines and is configured to become shaped as a box having an open bottom by being folded along the folding lines.

10. The ready-to-assemble house according to claim 1, wherein the first side end portion of the second plate-shaped member is fixed to the second side end portion of the first plate-shaped member, the first side end portion of the third plate-shaped member is fixed to the second side end portion of the second plate-shaped member, the first side end portion of the fourth plate-shaped member is fixed to the second side end portion of the third plate-shaped member, and the second side end portion is fixed to the first side end portion of the first plate-shaped member, and the ready-to-assemble house has a space surrounded by the first to fourth plate-shaped members.

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