Corner structures, buildings, and work processes

Abstract

To provide an inside corner structure capable of forming an inside corner with a relatively inexpensive and simple structure. [Solution] The inside corner structure is located at the inside corner of a building and includes a wall base material 3 extending vertically, a bent steel plate 10 formed by bending a steel plate extending vertically and having a first plate piece portion 10a and a second plate piece portion 10b, and at least one wall panel material 7, 8 extending vertically and horizontally, wherein only the first plate piece portion of the bent steel plate is supported by the wall base material and the wall panel material is joined to the second plate piece portion.

Description

[Technical Field]

[0001] The present invention relates to an inside corner structure, a building including the inside corner structure, and a work process for constructing the inside corner structure. [Background technology]

[0002] Buildings often have inside corners where walls intersect at right angles. In constructing these corners, to ensure the structural strength and stability of the building, wall substrates such as pillars and studs are installed, and then wall panels such as gypsum board are joined to these to form the wall. Because walls join at right angles in inside corners, it is necessary to adopt an appropriate joint structure.

[0003] In inside corners, simply attaching wall panels to pillars or studs may not provide sufficient joint strength. In particular, when external forces such as earthquakes or wind loads are applied, the joints may shift or break at points where the joint is insufficient. Therefore, auxiliary parts are needed to increase the strength of the inside corners and firmly secure the wall panels. L-shaped wall joiners are sometimes used as such auxiliary parts. Using wall joiners strengthens the connection with the studs and improves the stability of the wall panels.

[0004] For example, Patent Document 1 discloses a joining structure for partition wall posts at inside corners. This technology achieves a strong joint at the inside corner by fixing an L-shaped wall joiner to a stud and then attaching the partition wall post. In this structure, by attaching both plate portions of the wall joiner to the stud, high strength is ensured and construction consistency can be improved. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-242344 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in Patent Document 1, both boards of the L-shaped wall joiner are fixed to the studs, which increases the number of studs and the amount of wall underlayment used. Furthermore, even if reinforcement is not considered as in the prior art documents, providing components such as studs and wooden crosspieces to connect the wall panels increases material costs and construction burdens. Furthermore, since the studs on both sides must be precisely positioned and fixed accurately during construction, the work process becomes complicated, which increases construction time and the workload.

[0007] The present invention has been made in consideration of such problems, and aims to provide an inside corner structure that is capable of forming an inside corner portion with a relatively inexpensive and simple structure, and a building that is equipped with such an inside corner structure. [Means for solving the problem]

[0008] (1) The inside corner structure of the present invention is located at an inside corner of a building and includes a wall base material extending vertically, a bent steel plate formed by bending a steel plate extending vertically and having a first plate portion and a second plate portion, and at least one wall underplate material extending vertically and horizontally, wherein only the first plate portion of the bent steel plate is supported by the wall base material, and the wall plate material is joined to the second plate portion.

[0009] (2) The inside corner structure includes a pair of wall panel materials, and the bent steel plate is connected to the wall base material on the outside of the first panel portion, one of the wall panel materials is connected to the inside of the first panel portion, and the other wall panel material is connected to the inside of the second panel portion.

[0010] (3) In the building according to the present invention, the inside corner structure according to claim 1 or claim 2 is provided at each end of one of the wall base members.

[0011] (4) In the inside corner structure of (1) above, a pair of wall panel materials are included, and the first plate piece portion of the bent steel plate is supported on the wall base material via one of the wall panel materials, and the other wall panel material is joined to the second plate piece portion of the bent steel plate to form a wall.

[0012] (5) In the inside corner structure of (4) above, one of the wall panel materials is joined to the outside of the first plate piece portion of the bent steel plate, and the other of the wall panel material is joined to the outside of the second plate piece portion of the bent steel plate.

[0013] (6) The building according to the present invention has an inside corner structure of any one of (1), (4) and (5) described above, and a pair of the bent steel plates are joined together using one of the wall panel materials as a common wall panel material.

[0014] (7) In the inside corner structure of (1) above, the outside of the first plate piece is connected to the wall base material, and the wall plate material is connected to the outside of the second plate piece.

[0015] (8) The building according to the present invention comprises the inside corner structure of (1) or (7) above, and the other wall panel is connected to another wall base material connected to the wall base material.

[0016] (9) The building according to the present invention comprises the inside corner structure of (1) or (7) above, and the other wall panel material is connected to another bent steel plate connected to the wall base material.

[0017] (10) In the inside corner structure of (1) above, the wall base material extends from the floor to the ceiling.

[0018] (11) In the inside corner structure of (1) above, a plurality of the wall underlayment materials are arranged at intervals from the floor to the ceiling.

[0019] (12) The work process according to the present invention is a work process for constructing the inside corner structure described in (1) above, characterized in that when the wall panel material is joined to the outside of the bent steel plate, the L-shaped cross section of the bent steel plate is bent in advance to an obtuse angle before installation.

[0020] (13) The work process according to the present invention is a work process for constructing the inside corner structure described in (1) above, characterized in that when the wall panel material is joined to the inside of the bent steel plate, the L-shaped cross section of the bent steel plate is bent at an acute angle in advance before installation.

[0021] (14) In the inside corner structure according to the present invention, a heat insulating material is disposed on the wall base material side of the wall panel material. [Effects of the Invention]

[0022] According to the present invention, it is possible to provide an inside corner structure that can form an inside corner with a relatively low cost and simple structure, and a building equipped with such an inside corner structure. Furthermore, according to the working process of the present invention, it is possible to easily construct such an inside corner structure. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is a perspective view of an inside corner of a building according to a first embodiment. [Figure 2] FIG. 2 is a horizontal cross-sectional view of an inside corner of a building according to the first embodiment. [Figure 3] FIG. 3 is a perspective view of a bent steel plate. [Figure 4] FIG. 4 is a perspective view of an inside corner of a building according to the second embodiment. [Figure 5] FIG. 5 is a horizontal cross-sectional view of an inside corner of a building according to the second embodiment. [Figure 6] FIG. 6 is a perspective view of an inside corner of a building according to the third embodiment. [Figure 7] FIG. 7 is a horizontal cross-sectional view of an inside corner of a building according to the third embodiment. [Figure 8]FIG. 8 is a perspective view of an inside corner of a building according to the fourth embodiment. [Figure 9] FIG. 9 is a horizontal cross-sectional view of an inside corner of a building according to the fourth embodiment. [Figure 10] FIG. 10 is a perspective view of an inside corner of a building according to the fifth embodiment. [Figure 11] FIG. 11 is a horizontal cross-sectional view of an inside corner of a building according to the fifth embodiment. [Figure 12] FIG. 12 is a perspective view of an inside corner of a building according to the sixth embodiment. [Figure 13] FIG. 13 is a horizontal cross-sectional view of an inside corner of a building according to the sixth embodiment. [Figure 14] FIG. 14 is a perspective view of an inside corner of a building according to the seventh embodiment. [Figure 15] FIG. 15 is a horizontal cross-sectional view of an inside corner of a building according to the seventh embodiment. [Figure 16] FIG. 16 is a perspective view of an inside corner of a building according to the eighth embodiment. [Figure 17] FIG. 17 is a horizontal cross-sectional view of an inside corner of a building according to the eighth embodiment. [Figure 18] FIG. 18 is a perspective view of an inside corner of a building according to the ninth embodiment. [Figure 19] FIG. 19 is a horizontal cross-sectional view of an inside corner of a building according to the ninth embodiment. [Figure 20] FIG. 20 is a perspective view of an inside corner of a building according to the tenth embodiment. [Figure 21] FIG. 21 is a horizontal cross-sectional view of an inside corner of a building according to the tenth embodiment. [Figure 22] FIG. 22 is a perspective view of an inside corner of a building according to the eleventh embodiment. [Figure 23] FIG. 23 is a horizontal cross-sectional view of an inside corner of a building according to the eleventh embodiment. [Figure 24] FIG. 24 is a perspective view of an inside corner of a building according to the twelfth embodiment. [Figure 25]FIG. 25 is a horizontal cross-sectional view of an inside corner of a building according to the twelfth embodiment. [Figure 26] FIG. 26 is a perspective view of an inside corner of a building according to a modified example of the first embodiment. [Figure 27] FIG. 27 is a horizontal cross-sectional view of an inside corner of a building according to a modified example of the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0024] Buildings according to first to twelfth embodiments of the present invention will be described below with reference to the drawings. The buildings according to each embodiment include an inside corner structure according to an embodiment of the present invention. Note that the components in the drawings are exaggerated for the sake of explanation, and the size ratios of the components may differ from the actual ratios.

[0025] In the following embodiments, the wall base material 3 includes, in addition to those shown in the drawings, wooden components such as two-by-four lumber, pillars, studs, wooden crosspieces, and auxiliary materials, and steel components such as studs, runners, pillars, and auxiliary materials, which are not shown. Also, in the following embodiments, as shown in Fig. 3, for the folded steel plate 10, the surfaces of the first plate piece portion 10a and the second plate piece portion 10b bent toward each other (valley fold surfaces) are referred to as the inside, and the opposite surfaces bent away from each other (mountain fold surfaces) are referred to as the outside.

[0026] First Embodiment In this embodiment, the up-down direction shown in Fig. 1 is the z-direction (vertical direction), the first horizontal direction in which the first wall panel 6 extends (direction extending from the upper left to the lower right) is the x-direction, and the second horizontal direction perpendicular to the x-direction is the y-direction. Within the z-direction, the upward direction in Fig. 1 is the +z-direction, and the downward direction is the -z-direction. Within the x-direction, the downward right direction is the +x-direction, and the upward left direction is the -x-direction. Within the y-direction, the upward right direction is the +y-direction, and the downward left direction is the -y-direction.

[0027] Fig. 1 is a perspective view of an inside corner of a building according to the first embodiment, Fig. 2 is a horizontal cross-sectional view of the inside corner of a building according to the first embodiment, and Fig. 3 is a perspective view of a bent steel plate.

[0028] The inside corner structure 1 of this embodiment is located at an inside corner of a building S and includes a wall base material 3 extending in the z direction (vertical direction), a first wall panel material 6 that is arranged in contact with the surface of the wall base material 3 facing the +y direction and extends in the z direction and the x direction, two bent steel plates 10 that extend in the z direction, a second wall panel material 7 (wall panel material) that extends in the z direction and the y direction (second horizontal direction), and a third wall panel material 8 (wall panel material) that extends in the z direction and the x direction (first horizontal direction).

[0029] The wall base material 3 according to this embodiment includes a first two-by-four material 3a and a second two-by-four material 3b. The first two-by-four material 3a is arranged so that the long side of its cross section extends in the y direction. The first two-by-four material 3a is also arranged so that the surface facing the -y direction is in contact with the center of the surface of the second two-by-four material 3b facing the +y direction.

[0030] In this embodiment, the first two-by-four lumber 3a and the second two-by-four lumber 3b are fixed to each other by fastening members such as nails or screws. However, the first two-by-four lumber 3a and the second two-by-four lumber 3b do not have to be fixed to each other. The wall underlayment 3 is a member for attaching the first wall panel 6, the second wall panel 7, and the third wall panel 8 to the building S, and in this embodiment extends in the z direction from the floor (not shown) to the ceiling (not shown). In this embodiment and the following embodiments, each two-by-four lumber has a rectangular cross-sectional shape.

[0031] The first wall panel 6 is, for example, gypsum board, and can be attached to the wall base material 3 with fixing members such as screws. The second wall panel 7 and the third wall panel 8 are, for example, gypsum board, and can be attached to the wall base material 3 by passing fixing members such as screws through the folded steel plates 10. In the building S according to this embodiment, the second wall panel 7 and the third wall panel 8 form a pair of wall panel materials, and each of the two folded steel plates 10 is provided with a pair of wall panel materials. Therefore, the building S according to this embodiment has two sets of inside corner structures 1 at the inside corner portion shown in Figures 1 and 2.

[0032] As shown in Fig. 3, the bent steel plate 10 is formed by bending a rectangular steel plate along the longitudinal direction, and has a first plate piece portion 10a and a second plate piece portion 10b. In Fig. 3, the insides of the first plate piece portion 10a and the second plate piece portion 10b are visible on the near side.

[0033] The two sets of inside corner structures 1 are provided at both ends in the x direction of one second two-by-four material 3b that constitutes the wall base material 3. Specifically, the folded steel plates 10 of each inside corner structure 1 have only the first plate piece portion 10a fixed to the second two-by-four material 3b.

[0034] The outer side of the first plate piece portion 10a of one of the two bent steel plates 10 is joined to the surface facing the +x direction of the second two-by-four material 3b, and the outer side of the first plate piece portion 10a of the other bent steel plate 10 is joined to the surface facing the -x direction of the second two-by-four material 3b. Both bent steel plates 10 are arranged so that the outer surface of the second plate piece portion 10b is located on the same plane as the surface facing the +y direction of the second two-by-four material 3b.

[0035] A second wall panel 7 is joined to the inside of the first plate piece portion 10a of each bent steel plate 10. The end face on the +y direction side of the second wall panel 7 abuts against the inside of the second plate piece portion 10b. A third wall panel 8 is joined to the inside of each second plate piece portion 10b. The end face on the +x direction side or the -x direction side of the third wall panel 8 abuts against the second wall panel 7.

[0036] The work process for constructing the inside corner structure 1 according to this embodiment will be described. First, the first two-by-four 3a and the second two-by-four 3b are joined together to form the wall base material 3, and the first plate portion 10a of the bent steel plate 10 is attached to the second two-by-four 3b. Next, the second wall panel 7 is placed along the first plate portion 10a and attached to the first plate portion 10a while abutting against the second plate portion 10b. Finally, the third wall panel 8 is placed along the second plate portion 10b and attached to the second plate portion 10b while abutting against the second wall panel 7, thereby completing the two sets of inside corner structures 1.

[0037] Because the second plate piece 10b is not fixed to anything, while the first plate piece 10a is attached to the second two-by-four 3b, the first plate piece 10a can be attached more stably than the second plate piece 10b. Therefore, attaching the second wall plate 7 to the first plate piece 10a first is easier than attaching the third wall plate 8 to the second plate piece 10b first.

[0038] In the work process according to this embodiment, the second wall panel 7 and the third wall panel 8 are joined to the inside of the bent steel plate 10. Here, when the bent steel plate 10 is attached to the wall base material 3, the second wall panel 7 is attached to the bent steel plate 10, and then the third wall panel 8 is attached, a force is applied that widens the angle between the first plate piece 10a and the second plate piece 10b. Therefore, it is preferable that the bent steel plate 10 is bent in advance so that the angle between the first plate piece 10a and the second plate piece 10b (the inner angle) becomes a right angle when the widening force is applied.

[0039] Second Embodiment Fig. 4 is a perspective view of an inside corner of a building according to the second embodiment. Fig. 5 is a horizontal cross-sectional view of an inside corner of a building according to the second embodiment. In the explanation of the second embodiment and subsequent embodiments, parts common to the first embodiment will be designated by the same reference numerals in the drawings as the first reference numerals, and explanations thereof will be omitted.

[0040] The building S according to this embodiment has a pair (two sets) of inside corner structures 1 at the inside corner portion shown in Figures 4 and 5. The wall underlayment material 3 of each inside corner structure 1 has one first two-by-four material 3a, and the first two-by-four materials 3a are arranged at intervals in the x direction. The first two-by-four materials 3a are all arranged so that the long side of their cross sections extends in the y direction. A first wall panel material 6 is provided in contact with the surface of each of the first two-by-four materials 3a facing the +y direction. Furthermore, one inside corner structure 1 is provided on the surface of each of the first two-by-four materials 3a facing the -y direction.

[0041] The pair of inside corner structures 1 are arranged so that the outer surfaces of the second plate piece portions 10b of the bent steel plates 10 and the third wall plate material 8 face each other.

[0042] The two bent steel plates 10 are joined such that the outer side of the first plate piece 10a is connected to the surface of the first two-by-four 3a facing the -y direction. The second plate piece 10b is arranged so that its outer side is flush with the surface of the first two-by-four 3a facing the -x direction or the surface facing the +x direction.

[0043] A second wall panel 7 is joined to the inside of the first plate piece portion 10a of each bent steel plate 10. The end face of the second wall panel 7 on the +x direction side or the -x direction side abuts against the inside of the second plate piece portion 10b. A third wall panel 8 is joined to the inside of each second plate piece portion 10b. The end face of the third wall panel 8 on the +y direction side abuts against the second wall panel 7.

[0044] The inside corner structure 1 according to this embodiment can be constructed by the same work steps as those in the first embodiment.

[0045] Third Embodiment Fig. 6 is a perspective view of an inside corner of a building according to the third embodiment, and Fig. 7 is a horizontal cross-sectional view of the inside corner of a building according to the third embodiment.

[0046] A building S according to this embodiment has a set of inside corner structures 1 at the inside corner portion shown in Figures 6 and 7. The wall base material 3 of the inside corner structure 1 has a first two-by-four material 3a and a third two-by-four material 3c. The first wall panel material 6 has a portion extending in the x direction and a portion extending in the y direction, and these portions are connected to each other at their ends.

[0047] The first two-by-four material 3a and the third two-by-four material 3c are arranged with a gap in the x direction. In this embodiment, the third two-by-four material 3c is arranged on the -x direction side of the first two-by-four material 3a. The first two-by-four material 3a and the third two-by-four material 3c are both arranged so that the long sides of their cross sections extend in the y direction.

[0048] The first wall panel 6 is provided in contact with the surface of the third two-by-four lumber 3c facing in the -x direction and the surface facing in the +y direction.

[0049] In the bent steel plate 10 of the inside corner structure 1 according to this embodiment, the outer side of the first plate piece 10a is joined to the surface of the first two-by-four 3a facing the -y direction. The second plate piece 10b is arranged so that its outer side is flush with the surface of the first two-by-four 3a facing the -x direction.

[0050] A second wall panel 7 is joined to the inside of the first plate piece 10a of the bent steel plate 10. The end face of the second wall panel 7 on the -x direction side abuts against the inside of the second plate piece 10b. A third wall panel 8 is joined to the inside of the second plate piece 10b. The end face of the third wall panel 8 on the +y direction side abuts against the second wall panel 7.

[0051] The inside corner structure 1 according to this embodiment can be constructed by the same work steps as those in the first embodiment.

[0052] Fourth Embodiment Fig. 8 is a perspective view of an inside corner of a building according to the fourth embodiment, and Fig. 9 is a horizontal cross-sectional view of the inside corner of a building according to the fourth embodiment.

[0053] A building S according to this embodiment has a set of inside corner structures 1 at the inside corner portion shown in Figures 8 and 9. The wall base material 3 of the inside corner structure 1 has a first two-by-four material 3a and a third two-by-four material 3c. The first wall panel material 6 has a portion extending in the x direction and a portion extending in the y direction, and these portions are connected to each other at their ends.

[0054] The first two-by-four lumber 3a is arranged so that the long side of its cross section extends in the x direction, and the third two-by-four lumber 3c is arranged so that the long side of its cross section extends in the y direction. The surface of the first two-by-four lumber 3a facing the +y direction is joined to the surface of the third two-by-four lumber 3c facing the -y direction. The first two-by-four lumber 3a and the third two-by-four lumber 3c are arranged so that the surface of the first two-by-four lumber 3a facing the -x direction and the surface of the third two-by-four lumber 3c facing the -x direction are located on the same plane. The first two-by-four lumber 3a and the third two-by-four lumber 3c are fixed to each other with fixing members such as nails or screws.

[0055] The first wall panel 6 is provided in contact with the surface of the third two-by-four lumber 3c facing in the -x direction and the surface facing in the +y direction.

[0056] In the bent steel plate 10 of the inside corner structure 1 according to this embodiment, the outer side of the first plate piece 10a is joined to the surface of the first two-by-four 3a facing the +x direction. The second plate piece 10b is arranged so that its outer side is flush with the surface of the first two-by-four 3a facing the +y direction.

[0057] A second wall panel 7 is joined to the inside of the first plate piece 10a of the bent steel plate 10. The end face of the second wall panel 7 on the -x direction side abuts against the inside of the second plate piece 10b. A third wall panel 8 is joined to the inside of the second plate piece 10b. The end face of the third wall panel 8 on the +y direction side abuts against the second wall panel 7.

[0058] The inside corner structure 1 according to this embodiment can be constructed by the same work steps as those in the first embodiment.

[0059] Fifth Embodiment Fig. 10 is a perspective view of an inside corner of a building according to the fifth embodiment, and Fig. 11 is a horizontal cross-sectional view of the inside corner of a building according to the fifth embodiment.

[0060] In the building S according to this embodiment, the wall base material 3 has a pillar 2 instead of the first two-by-four material 3a, and has a stud 3d instead of the second two-by-four material 3b. Other than these points, the structure is the same as that of the first embodiment, and the building S according to this embodiment has two sets of inside corner structures 1 at the inside corner portion shown in Figures 10 and 11.

[0061] Column 2 is a so-called through column that constitutes the skeleton of building S, and extends in the z direction from the foundation (not shown) to the ceiling (not shown). Column 2 has a square cross section, and the length of one side of the square is the same as the long side of the cross section of stud 3d. Stud 3d is arranged so that the long side of its cross section extends in the x direction, and is attached to the surface of column 2 facing the -y direction, extending in the z direction from the floor (not shown) to the ceiling (not shown). Column 2 and stud 3d are fixed to each other with fixing members such as nails and screws. Column 2 is a load-bearing member, while stud 3d is a member intended to attach bent steel plates 10 of the inside corner structure 1 and does not function as a load-bearing member.

[0062] The outer side of the first plate portion 10a of one of the bent steel plates 10 of the two sets of inside corner structures 1 is joined to the surface facing the +x direction of the partition 3d, and the outer side of the first plate portion 10a of the other bent steel plate 10 is joined to the surface facing the -x direction of the partition 3d.

[0063] A second wall panel 7 is joined to the inside of the first plate piece portion 10a of each bent steel plate 10. The end face on the +y direction side of the second wall panel 7 abuts against the inside of the second plate piece portion 10b. A third wall panel 8 is joined to the inside of each second plate piece portion 10b. The end face on the +x direction side or the -x direction side of the third wall panel 8 abuts against the second wall panel 7.

[0064] The inside corner structure 1 according to this embodiment can be constructed by the same work steps as those in the first embodiment.

[0065] Sixth Embodiment Fig. 12 is a perspective view of an inside corner of a building according to the sixth embodiment, and Fig. 13 is a horizontal cross-sectional view of the inside corner of a building according to the sixth embodiment.

[0066] The building S according to this embodiment has a pair of inside corner structures 1 at the inside corners shown in FIGS.

[0067] The wall base material 3 according to this embodiment has a pillar 2 and two first reinforcing members 4a. The first reinforcing members 4a are square timbers with a smaller cross section than the pillar 2. The first wall panel material 6 has a portion extending in the x direction and a portion extending in the y direction, and these portions are connected at their ends.

[0068] The two first reinforcing members 4a are attached to the surface of the column 2 facing the +x direction, and are arranged so that the surface of the column 2 facing the -y direction and the surfaces of the two first reinforcing members 4a facing the -y direction are located on the same plane. One of the two first reinforcing members 4a is arranged so that its upper end is in contact with the ceiling, and the other is arranged so that its lower end is in contact with the floor. Because the combined length of the two first reinforcing members 4a is shorter than the length from floor to ceiling of the building S, the two first reinforcing members 4a are spaced apart from each other in the z direction. The column 2 and the two first reinforcing members 4a are fixed to each other with fixing members such as screws. In this embodiment, there are two first reinforcing members 4a, but there may be three or more first reinforcing members.

[0069] The first wall panel 6 is provided in contact with the surface of the pillar 2 facing the -x direction and the surface facing the +y direction.

[0070] The outer side of the first plate piece portion 10a of the bent steel plate 10 is joined to the faces of the two first auxiliary members 4a facing the -y direction. The outer side of the second plate piece portion 10b is positioned on the same plane as the faces of the two first auxiliary members 4a facing the -x direction.

[0071] A second wall panel 7 is joined to the inside of the first plate piece 10a of the bent steel plate 10. The end face of the second wall panel 7 on the -x direction side abuts against the inside of the second plate piece 10b. A third wall panel 8 is joined to the inside of the second plate piece 10b. The end face of the third wall panel 8 on the +y direction side abuts against the second wall panel 7.

[0072] The inside corner structure 1 according to this embodiment can be constructed by the same work steps as those in the first embodiment.

[0073] Seventh Embodiment Fig. 14 is a perspective view of an inside corner of a building according to the seventh embodiment, and Fig. 15 is a horizontal cross-sectional view of the inside corner of a building according to the seventh embodiment.

[0074] The building S according to this embodiment has two sets of inside corner structures 1 at the inside corner portions shown in Figures 14 and 15. Each of the two sets of inside corner structures 1 has one folded steel plate 10, so the building S has a pair (two) of folded steel plates 10.

[0075] Each of the two sets of inside corner structures 1 has a pair of wall panel materials, namely, a second wall panel material 7 and a third wall panel material 8. The two sets of inside corner structures 1 of this embodiment share the second wall panel material 7, as will be described below.

[0076] The wall base material 3 according to this embodiment has two first two-by-four pieces 3a. These first two-by-four pieces 3a are both arranged so that the long side of their cross sections extends in the y direction, and are joined together so that their faces facing the x direction coincide. Therefore, the two first two-by-four pieces 3a are arranged so that both their faces facing the +y direction and the -y direction are located on the same plane. The two first two-by-four pieces 3a are fixed to each other with fixing members such as screws.

[0077] A first wall panel 6 is attached to the surface of each of the two first two-by-fours 3a facing the +y direction, and a second wall panel 7 is attached to the surface facing the -y direction.

[0078] In the inside corner structure 1 according to this embodiment, the first plate piece portions 10a of the two folded steel plates 10 are supported on the wall base material 3 via the second wall panel material 7. Specifically, the first plate piece portions 10a of the two folded steel plates 10 are arranged so that the outer sides face the second wall panel material 7, and are fixed to one of the two first two-by-fours 3a that make up the wall base material 3 by a fixing member (not shown) that penetrates the second wall panel material 7. In this way, the pair of folded steel plates 10 are joined together using one second wall panel material 7 as a common wall panel material.

[0079] The two bent steel plates 10 are arranged so that the inner sides of the second plate piece portions 10b face each other.

[0080] The second wall panel 7 is joined to the outside of the first plate piece 10a of the bent steel plate 10. The third wall panel 8 is joined to the second plate piece 10b of the bent steel plate 10 to form a wall. Specifically, both third wall panels 8 are joined to the outside of the second plate piece 10b.

[0081] The process for constructing the inside corner structure 1 according to this embodiment will be described below. First, two first two-by-four lumbers 3a are joined together to form the wall base 3. A first wall panel 6 is attached to the surface of the wall base 3 facing the +y direction, and a second wall panel 7 is attached to the surface facing the -y direction. Next, the outer side of the first plate portion 10a of the folded steel plate 10 is aligned with the second wall panel 7, facing the wall base 3, and the inner sides of the second plate portions 10b of the two folded steel plates 10 are fixed so that they face each other. Finally, a third wall panel 8 is placed along the outer side of the second plate portion 10b and attached to the second plate portion 10b while abutting against the second wall panel 7, completing the two sets of inside corner structures 1.

[0082] In the working process according to this embodiment, the second wall panel 7 and the third wall panel 8 are joined to the outside of the bent steel plate 10. Here, after the bent steel plate 10 is fixed to the second wall panel 7, when the third wall panel 8 is attached, a force is applied to narrow the angle between the first plate piece 10a and the second plate piece 10b. Therefore, it is preferable that the bent steel plate 10 is bent in advance so that the angle between the first plate piece 10a and the second plate piece 10b (the inner angle) becomes a right angle when the narrowing force is applied.

[0083] Eighth Embodiment Fig. 16 is a perspective view of an inside corner of a building according to the eighth embodiment, and Fig. 17 is a horizontal cross-sectional view of the inside corner of a building according to the eighth embodiment.

[0084] The building S according to the eighth embodiment has the same configuration as that of the seventh embodiment, except that the wall base material 3 has a pillar 2 instead of the two first two-by-four materials 3a. The pillar 2 is the same as the pillar 2 according to the fifth embodiment.

[0085] Ninth Embodiment Fig. 18 is a perspective view of an inside corner of a building according to the ninth embodiment, and Fig. 19 is a horizontal cross-sectional view of the inside corner of a building according to the ninth embodiment.

[0086] The building S according to this embodiment has a pair of inside corner structures 1 at the inside corner portion shown in FIGS.

[0087] The wall base material 3 according to this embodiment has a column 2 and one second reinforcing member 4b connected to the column 2. The second reinforcing member 4b is a square timber with a smaller cross section than the column 2. The first wall panel material 6 has a portion extending in the x direction and a portion extending in the y direction, and these portions are connected at their ends.

[0088] The second reinforcing member 4b is attached to the surface of the column 2 facing the +x direction, and extends in the z direction from the floor (not shown) to the ceiling (not shown). The second reinforcing member 4b is arranged so that the surface of the column 2 facing the -y direction and the surface of the second reinforcing member 4b facing the -y direction are located on the same plane. The column 2 and the second reinforcing member 4b are fixed to each other with fixing members such as nails or screws.

[0089] The first wall panel 6 is provided in contact with the surface of the pillar 2 facing the -x direction and the surface facing the +y direction.

[0090] The outer side of the first plate piece portion 10a of the bent steel plate 10 is joined to the surface facing the -y direction of the column 2. The outer side of the second plate piece portion 10b is arranged so that it is located on the same plane as the surface facing the +x direction of the column 2 and the surface facing the -x direction of the second reinforcing member 4b.

[0091] A second wall panel 7 is joined to the outer side of the second plate piece portion 10b of the bent steel plate 10. The end face of the second wall panel 7 on the +y direction side abuts against the surface of the second auxiliary member 4b facing in the -y direction. A third wall panel 8 is joined to the surface of the second auxiliary member 4b facing in the -y direction. The end face of the third wall panel 8 on the -x direction side abuts against the second wall panel 7.

[0092] Thus, in the corner structure 1 of this embodiment, the third wall panel material 8 is connected not to the column 2, which is the wall base material 3 to which the bent steel plate 10 is connected, but to the second auxiliary material 4b, which is another wall base material 3 connected to the column 2.

[0093] Tenth Embodiment Fig. 20 is a perspective view of an inside corner of a building according to the tenth embodiment. Fig. 21 is a horizontal cross-sectional view of the inside corner of a building according to the tenth embodiment.

[0094] The building S according to this embodiment has a pair of inside corner structures 1 at the inside corner portion shown in FIGS.

[0095] The wall underlayment 3 according to this embodiment has a pillar 2. The first wall panel 6 has a portion extending in the x direction and a portion extending in the y direction, and these portions are connected at their ends. The first wall panel 6 is provided in contact with the surface of the pillar 2 facing the -x direction and the surface facing the +y direction.

[0096] The inside corner structure 1 according to this embodiment has two folded steel plates 10. In one of the folded steel plates 10, the outer side of the first plate piece portion 10a is joined to the surface of the column 2 facing the +x direction. The second plate piece portion 10b of this folded steel plate 10 is arranged so that its outer side is located on the same plane as the surface of the column 2 facing the -y direction.

[0097] The other bent steel plate 10 (the other bent steel plate) has the outer side of the first plate piece portion 10a joined to the surface facing the -y direction of the column 2. The second plate piece portion 10b of this bent steel plate 10 is arranged so that its outer side is located on the same plane as the surface facing the +x direction of the column 2.

[0098] A second wall plate 7 is joined to the outside of the second plate piece 10b of one of the bent steel plates 10. The end face on the -x direction side of the second wall plate 7 abuts against the second plate piece 10b of the other bent steel plate 10. A third wall plate 8 is joined to the outside of the second plate piece 10b of the other bent steel plate 10. The end face on the +y direction side of the third wall plate 8 abuts against the outside of the second plate piece 10b of one of the bent steel plates 10.

[0099] Eleventh Embodiment Fig. 22 is a perspective view of an inside corner of a building according to Embodiment 11. Fig. 23 is a horizontal cross-sectional view of the inside corner of a building according to Embodiment 11.

[0100] The building S according to this embodiment has two sets of inside corner structures 1 at the inside corner portions shown in Figures 22 and 23. The configuration of each of these inside corner structures 1 is similar to that of the inside corner structure 1 according to the tenth embodiment, and each has two folded steel plates 10. These inside corner structures 1 share a wall base material 3 (column 2).

[0101] The wall base material 3 according to this embodiment has a pillar 2. The first wall panel material 6 is provided in contact with the surface of the pillar 2 facing the +y direction.

[0102] One of the two sets of inside corner structures 1 is provided at the corner of the column 2 on the +x and -y direction sides (the upper right corner in Figure 23), and the other is provided at the corner of the column 2 on the -x and -y direction sides (the lower right corner in Figure 23).

[0103] First, one of the inside corner structures 1 (the upper right corner of the column 2 in FIG. 23) will be described. This inside corner structure 1 has two folded steel plates 10. In one of the folded steel plates 10, the outer side of the first plate piece portion 10a is joined to the surface of the column 2 facing in the +x direction. The second plate piece portion 10b of this folded steel plate 10 is arranged so that its outer side is located on the same plane as the surface of the column 2 facing in the -y direction.

[0104] The other bent steel plate 10 (the other bent steel plate) has the outer side of the first plate piece portion 10a joined to the surface facing the -y direction of the column 2. The second plate piece portion 10b of this bent steel plate 10 is arranged so that its outer side is located on the same plane as the surface facing the +x direction of the column 2.

[0105] A second wall panel 7 is joined to the outside of the second plate piece portion 10b of one of the bent steel plates 10. The end face on the -x direction side of the second wall panel 7 abuts against the second plate piece portion 10b of the other bent steel plate 10. A third wall panel 8 is joined to the outside of the second plate piece portion 10b of the other bent steel plate 10. The end face on the +y direction side of the third wall panel 8 abuts against the second wall panel 7.

[0106] Next, we will explain the other inside corner structure 1 (the lower right corner of the column 2 in Figure 23). This inside corner structure 1 also has two folded steel plates 10. In one of the folded steel plates 10, the outer side of the first plate piece portion 10a is joined to the surface of the column 2 facing in the -x direction. The second plate piece portion 10b of this folded steel plate 10 is arranged so that its outer side is located on the same plane as the surface of the column 2 facing in the -y direction.

[0107] The other bent steel plate 10 (the other bent steel plate) has the outer side of the first plate piece portion 10a joined to the surface of the column 2 facing the -y direction. The second plate piece portion 10b of this bent steel plate 10 is arranged so that its outer side is located on the same plane as the surface of the column 2 facing the -x direction.

[0108] A second wall panel 7 is joined to the outside of the second plate piece portion 10b of one of the bent steel plates 10. The end face on the +x direction side of the second wall panel 7 abuts against the second plate piece portion 10b of the other bent steel plate 10. A third wall panel 8 is joined to the outside of the second plate piece portion 10b of the other bent steel plate 10. The end face on the +y direction side of the third wall panel 8 abuts against the second wall panel 7.

[0109] In this way, the two inside corner structures 1 share the column 2. Furthermore, the two third wall panel members 8 of these inside corner structures 1 form one wall.

[0110] Twelfth Embodiment Fig. 24 is a perspective view of an inside corner of a building according to the twelfth embodiment, and Fig. 25 is a horizontal cross-sectional view of the inside corner of a building according to the twelfth embodiment.

[0111] The building S according to this embodiment has a set of inside corner structures 1 at the inside corner portion shown in Figures 24 and 25. The wall base material 3 of the inside corner structure 1 has a first two-by-four material 3a.

[0112] The first two-by-four material 3a is arranged so that the long side of its cross section extends in the y direction. The first wall panel material 6 is provided in contact with the surface of the first two-by-four material 3a facing the +y direction.

[0113] In the bent steel plate 10 of the inside corner structure 1 according to this embodiment, the outer side of the first plate piece 10a is joined to the surface of the first two-by-four material 3a facing the -x direction. The tip of the first plate piece 10a is positioned on the same plane as the surface of the first two-by-four material 3a facing the +y direction.

[0114] The bent steel plate 10 is arranged so that the outer side of the second plate piece portion 10b of the bent steel plate 10 faces the -y direction. The second wall plate material 7 is joined to the outer side of the second plate piece portion 10b. The end face of the second wall plate material 7 on the +x direction side is abutted against the surface of the first two-by-four material 3a facing the -x direction.

[0115] A third wall panel 8 is joined to the surface of the first two-by-four board 3a facing the -x direction. The end face of the third wall panel 8 on the +y direction side is abutted against the second wall panel 7. The end face of the third wall panel 8 on the -y direction side protrudes in the -y direction beyond the surface of the first two-by-four board 3a facing the -y direction by the thickness of the wall panel.

[0116] A fourth wall panel 9 is joined to the surface of the first two-by-four board 3a facing the -y direction. The end face of the fourth wall panel 9 facing the -x direction is abutted against the third wall panel 8.

[0117] <Variations> Fig. 26 is a perspective view of an inside corner of a building according to a modification of the first embodiment. Fig. 27 is a horizontal cross-sectional view of the inside corner of a building according to a modification of the first embodiment.

[0118] In this modification, in the inside corner structure 1 of the building S according to the first embodiment, the heat insulating material 20 is filled on the wall base material 3 side of the third wall panel 8. Specifically, the heat insulating material 20 is filled in the space surrounded by the first wall panel 6, the third wall panel 8, the first two-by-four material 3a, and the second two-by-four material 3b.

[0119] The heat insulating material 20 may be a relatively hard heat insulating material such as urethane foam, or a relatively soft heat insulating material such as glass wool. Furthermore, a relatively soft heat insulating material such as glass wool may be used in a bag.

[0120] In embodiments other than the first embodiment, a heat insulating material may be filled between the first wall panel 6 and the second wall panel 7 or between the first wall panel 6 and the third wall panel 8.

[0121] In the first embodiment, by filling the insulating material 20 on the wall base material 3 side of the third wall panel 8, it is possible to impart thermal insulation to the inside corner structure 1, and to make the inside of the building S less susceptible to the effects of outdoor temperatures than the third wall panel 8. By using the inside corner structure 1 according to this embodiment, it is possible to fill more insulating material 20 than if it were not used, which contributes to improving the thermal insulation performance of the building S.

[0122] In each of the above embodiments, the positional relationship between the upper and lower ends of the inside corner structure 1 and the ceiling and floor of the building S is not particularly limited.

[0123] In each of the above embodiments, a sheet-like member such as a moisture-proof and airtight sheet may be sandwiched between the second wall panel material 7 and the third wall panel material 8 and the first plate portion 10a and the second plate portion 10b of the bent steel plate 10.

[0124] The first wall panel 6, the second wall panel 7, the third wall panel 8, and the fourth wall panel 9 may each be made of multiple stacked gypsum boards. The first wall panel may also function as an exterior wall.

[0125] The above describes the building S equipped with the inside corner structure 1 according to this embodiment. However, the inside corner structure 1 is not limited to the above embodiment, and other configurations are possible within the scope of achieving the object of the invention. [Industrial Applicability]

[0126] The present invention can be used to construct walls at inside corners of buildings. [Explanation of symbols]

[0127] S Building 1. Inside corner structure 2 Pillars (wall underlayment) 3 Wall underlayment 3a First two-by-four lumber (wall underlayment material) 3b Second two-by lumber (wall underlayment material) 3c Third 2x4 lumber (wall underlayment material) 3D studs (wall underlayment) 4a First auxiliary material (wall underlayment material) 4b Second auxiliary material (wall underlayment material) 6 First wall panel 7 Second wall panel (wall panel) 8 Third Wall Panel (Wall Panel) 10 bent steel plate 10 10a First plate piece 10b Second plate piece 20. Insulation x horizontal direction y horizontal direction z vertical direction

Claims

1. At the corners of buildings, a wall base material extending in the vertical direction; a bent steel plate formed by bending a vertically extending steel plate once along a longitudinal direction, the bent steel plate having a first plate piece portion and a second plate piece portion; at least one wall panel extending vertically and horizontally; The bent steel plate is supported by the wall base material only at the first plate piece portion, The wall panel is joined to the second panel portion.

2. a pair of said wall panels; The bent steel plate is joined to the wall base material at a surface opposite to a surface of the first plate piece portion bent in a direction approaching the second plate piece portion, one of the wall panels is joined to a surface of the first panel portion bent toward the second panel portion, 2. The inside corner structure according to claim 1, wherein the other wall panel is joined to a surface of the second plate portion that is bent in a direction approaching the first plate portion.

3. A building, wherein the inside corner structure according to claim 1 or 2 is provided at each end of one of the wall base members.

4. a pair of said wall panels; The first plate piece portion of the bent steel plate is supported by the wall base material via one of the wall plate materials, 2. The inside corner structure according to claim 1, wherein the other of the wall panels is joined to the second plate portion of the bent steel plate to form a wall.

5. one of the wall panels is joined to a surface of the first plate piece portion of the bent steel plate opposite to a surface bent in a direction approaching the second plate piece portion, 5. The inside corner structure according to claim 4, wherein the other wall panel material is joined to a surface of the second plate piece portion of the bent steel plate opposite to a surface bent in a direction approaching the first plate piece portion.

6. The corner structure according to claim 1, claim 4 or claim 5 is provided, A building in which a pair of the bent steel plates are joined together using one of the wall panels as a common wall panel.

7. The bent steel plate is joined to the wall base material at a surface opposite to a surface of the first plate piece portion bent in a direction approaching the second plate piece portion, 2. The inside corner structure according to claim 1, wherein the wall panel is joined to a surface of the second plate piece opposite to a surface bent in a direction approaching the first plate piece.

8. The inside corner structure according to claim 1 or 7 is provided, The other wall panel is connected to another wall base material that is connected to the wall base material.

9. The inside corner structure according to claim 1 or 7 is provided, The other wall panel material is connected to the other bent steel plate connected to the wall base material.

10. The inside corner construction of claim 1 , wherein the wall furring strip extends from the floor to the ceiling.

11. 2. The inside corner structure according to claim 1, wherein a plurality of said wall underlayments are spaced apart from one another from floor to ceiling.

12. A work process for constructing the inside corner structure according to claim 1, When the wall panel material is joined to a surface opposite to a surface where the first plate piece portion and the second plate piece portion of the bent steel plate are bent in a direction toward each other, A work process characterized in that the bent steel plate is pre-bent so that the angle between the first plate piece portion and the second plate piece portion is an obtuse angle before being attached to the wall base material.

13. A work process for constructing the inside corner structure according to claim 1, When the wall panel material is joined to the surface of the bent steel plate where the first plate piece portion and the second plate piece portion are bent in a direction in which they approach each other, A work process characterized in that the bent steel plate is bent in advance so that the angle between the first plate piece portion and the second plate piece portion is an acute angle before being attached to the wall base material.

14. The inside corner structure according to claim 1 , wherein a heat insulating material is filled into the wall board on the side of the wall base material.

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