Connecting fitting and building

Abstract

A connecting fitting (100) is hardware for connecting, to a connecting target surface (21) of a connecting target part (20) in a building (1), a first shaft member (30) disposed obliquely with respect to the connecting target surface (21) and a second shaft member (40) disposed obliquely with respect to the connecting target surface (21). The connecting fitting (100) comprises: a first fitting attached to the connecting target surface (21); and a second fitting attached to an end part of the first shaft member (30) and attached to an end part of the second shaft member (40). The second fitting is connected to the first fitting.

Description

Coupling fitting and building

[0001] The present disclosure relates to a coupling fitting and a building.

[0002] A coupling fitting for coupling an end portion of a shaft member disposed obliquely with respect to a horizontal member such as a beam to the horizontal member is known. For example, Patent Document 1 discloses a stirrup connecting device that connects end portions of two stirrup members to an aggregate.

[0003] Japanese Patent Application Laid-Open No. 2019-7288

[0004] The stirrup connecting device of Patent Document 1 is configured by providing a pair of coupling portions (in the same document, split bodies) to which end portions of two stirrup members are attached to a fixing portion attached to an aggregate. Each of the pair of coupling portions is configured in a box shape so as to accommodate the end portion of the stirrup member. Each of the pair of coupling portions rotates with respect to the fixing portion. As described above, there is room for improvement in the coupling fitting that couples end portions of two shaft members to one shaft member from the viewpoint of the structure of the coupling fitting.

[0005] (1) A coupling fitting according to one aspect of the present disclosure is a coupling fitting that couples a first shaft member disposed obliquely with respect to a coupling target surface and a second shaft member disposed obliquely with respect to the coupling target surface to a coupling target surface of a coupling target portion in a building, and includes a first fitting attached to the coupling target surface, and a second fitting attached to an end portion of the first shaft member and attached to an end portion of the second shaft member, and the second fitting is coupled to the first fitting.

[0006] According to this configuration, the first shaft member and the second shaft member are attached to the second fitting. Since the second fitting is one fitting, the structure of the coupling fitting can be simplified as compared with the case where the second fitting is constituted by a plurality of fittings.

[0007] (2) In the coupling fitting described in (1) above, the first fitting has a first fixing part fixed to the part to be coupled, and a first coupling part connected to the first fixing part and coupled to the second fitting, the second fitting has a second fixing part fixed to the end of the first shaft member, a third fixing part fixed to the end of the second shaft member, and a second coupling part connected to both the second fixing part and the third fixing part and coupled to the first coupling part of the first fitting, the first coupling part has a first coupling plate provided with a first coupling hole, the second coupling part has a second coupling plate provided with a second coupling hole, and the first coupling shaft member passes through the first coupling hole and the second coupling hole. With this configuration, the second fitting can be coupled to the first fitting by the first coupling shaft member.

[0008] (3) In the coupling fitting described in (2) above, the second coupling portion has two second coupling plates, and the first coupling shaft member is inserted through the first coupling hole and the two second coupling holes with the first coupling plate sandwiched between the two second coupling plates.

[0009] In this configuration, the first connecting plate is sandwiched between the two second connecting plates, and the first fitting and the second fitting are connected in this manner. Therefore, the effect of suppressing the movement of the second fitting relative to the first fitting in the direction in which the two second connecting plates sandwich the first connecting plate is improved.

[0010] (4) In the coupling fitting described in (2) or (3) above, the coupling target surface is provided with a first hole, the coupling target portion is provided with a first through hole intersecting the first hole, the first fixing portion has a pole that is inserted into the first hole and has a first fixing hole, and with the pole inserted through the first hole, the first fixing shaft member passes through the first through hole and the first fixing hole. With this configuration, the first fitting can be attached to the coupling target portion by the first fixing shaft member.

[0011] (5) In the coupling fitting described in any one of (2) to (4) above, the end face of the first shaft member is provided with a first slit, the first shaft member is provided with a second through hole intersecting the first slit, the second fixing part has a first fixing plate that is inserted into the first slit and has a second fixing hole, and with the first fixing plate inserted into the first slit, the second fixing shaft member passes through the second through hole and the second fixing hole, the end face of the second shaft member is provided with a second slit, the second shaft member is provided with a third through hole intersecting the second slit, the third fixing part has a second fixing plate that is inserted into the second slit and has a third fixing hole, and with the second fixing plate inserted into the second slit, the third fixing shaft member passes through the third through hole and the third fixing hole.

[0012] According to this configuration, the second fitting can be attached to the first shaft member by a second fixed shaft member and can be attached to the second shaft member by a third fixed shaft member. (6) A building according to one aspect of the present disclosure is a building having a frame, the frame comprising: a coupling target portion having a coupling target surface; a first shaft member arranged diagonally with respect to the coupling target surface; a second shaft member arranged diagonally with respect to the coupling target surface; and a coupling fitting according to any one of (1) to (5) above, wherein the end of the first shaft member and the end of the second shaft member are coupled to the coupling target surface by the coupling fitting.

[0013] In this configuration, the ends of the first shaft member and the ends of the second shaft member are connected to the surface to be connected by a connecting fitting. Since the second fitting is a single fitting, the appearance of the connection between the part to be connected and the first shaft member and the second shaft member can be made simpler compared to the case where the second fitting is composed of two or more fittings. Therefore, the aesthetic design of the connection between the part to be connected and the first shaft member and the second shaft member can be improved.

[0014] According to the connectors and buildings of this disclosure, the structure of the connectors can be simplified.

[0015] This is a schematic diagram of a building according to an embodiment. This is an exploded perspective view of the first connecting fitting in Figure 1. This is a cross-sectional view of the connecting part along the line D3-D3 in the building in Figure 1. This is an exploded perspective view of the second connecting fitting in Figure 1. This is a cross-sectional view of the connecting part along the line D5-D5 in the building in Figure 1. This is a cross-sectional view of the connecting part along the line D6-D6 in the building in Figure 1. This is a schematic diagram of a building according to a modified example.

[0016] <Embodiment> An embodiment of the building 1 and the first connecting fitting 100 will be described with reference to Figures 1 to 6. In the following description, the first connecting fitting 100 corresponds to the connecting fitting of the means for solving the problem.

[0017] <Building> Building 1 is, for example, a detached house, an apartment building, a commercial facility, and a public facility. In this embodiment, Building 1 will be described as a commercial facility. In the following description, the first direction A1 is the direction along the ground. In this embodiment, the first direction A1 is the direction along the horizontal. The second direction A2 intersects with the first direction A1 and is the direction along the vertical direction.

[0018] As shown in Figure 1, building 1 comprises a structural frame 2. The structural frame 2 is the framework of building 1. The structural frame 2 is built on the foundation 3 of building 1. The structural frame 2 is composed of axial members. The axial members include horizontal members, columns, and braces. The horizontal members include beams, girders, and sills.

[0019] The structural frame 2 comprises a beam 10, a first brace 11, a second brace 12, and a first connecting fitting 100. The beam 10, the first brace 11, and the second brace 12 are made of wood. The beam 10, the first brace 11, and the second brace 12 may be made of laminated timber or solid wood. The first connecting fitting 100 is made of metal. The ends of the first brace 11 and the ends of the second brace 12 are connected to the lower surface 13 or upper surface 14 of the beam 10 by the first connecting fitting 100. In this embodiment, the upper end of the first brace 11 and the upper end of the second brace 12 are connected to the lower surface 13 of the beam 10 by the first connecting fitting 100. The beam 10 is arranged along the first direction A1.

[0020] The first brace 11 is positioned diagonally to the beam 10. The first brace 11 is positioned to intersect diagonally with both the first direction A1 and the second direction A2. The second brace 12 is positioned diagonally to the beam 10. The second brace 12 is positioned to intersect diagonally with both the first direction A1 and the second direction A2. The beam 10, the first brace 11, and the second brace 12 constitute a load-bearing wall in the wall 4 of the building 1. No columns are provided between the first brace 11 and the second brace 12.

[0021] The structural frame 2 further comprises a first column 15, a second column 16, and two second connecting fittings 200. The first column 15 and the second column 16 are arranged along the second direction A2. The lower end of the first brace 11 and the lower end of the first column 15 are connected to the upper surface 5 of the foundation 3 by one second connecting fitting 200. Also, the lower end of the second brace 12 and the lower end of the second column 16 are connected to the upper surface 5 of the foundation 3 by one second connecting fitting 200. In the structural frame 2, the first column 15 and the second column 16 are made of, for example, wood. The first column 15 and the second column 16 may be made of laminated timber or solid wood. The two second connecting fittings 200 are made of metal.

[0022] In this embodiment, the structural frame 2 has an exposed structure in which a part of the structural frame 2 is exposed. In the example of Figure 1, at least the first brace 11 and the second brace 12 are exposed. Here, "exposed" means that they are not covered by exterior materials, interior materials, etc. In this embodiment, the connections between the ends of the first brace 11 and the ends of the second brace 12 and the lower surface 13 of the beam 10 are also exposed. A part of the first connecting fitting 100 is also exposed. In the example of Figure 1, the first column 15 and the second column 16 are also exposed. The connections between the ends of the first brace 11 and the ends of the first column 15 and the upper surface 5 of the foundation 3, and the connections between the ends of the second brace 12 and the ends of the second column 16 and the upper surface 5 of the foundation 3 are also exposed. A part of the second connecting fitting 200 is also exposed. Furthermore, if the first brace 11 and the second brace 12 are exposed, the beam 10, the first column 15, and the second column 16 may be installed inside the wall 4.

[0023] In the first direction A1, an opening is provided between the first brace 11 and the second brace 12. The opening is, for example, passable by a person. The exposed structure allows the texture of the first brace 11 and the second brace 12 to be expressed, thereby improving the design of the building 1. For example, if the exposed part of the frame 2 is made of wood, a warm-looking space can be created.

[0024] <First Connecting Fitting> As shown in Figure 1, the first connecting fitting 100 is a metal fitting used to connect a first shaft member 30 and a second shaft member 40 to a connecting surface 21 of a connecting target part 20 in a building 1. The ends of the first shaft member 30 and the second shaft member 40 are connected to the connecting surface 21 by the first connecting fitting 100. The first shaft member 30 is positioned diagonally with respect to the connecting surface 21. The second shaft member 40 is positioned diagonally with respect to the connecting surface 21. The connecting target part 20 is, for example, a part of the building 1 such as the frame 2 or foundation 3. The first shaft member 30 and the second shaft member 40 are made of, for example, wood. In the example of the first connecting fitting 100, the frame 2 comprises the connecting target part 20, the first shaft member 30, the second shaft member 40, and the first connecting fitting 100.

[0025] As shown in Figure 2, in the first connecting fitting 100, the part to be connected 20 is the beam 10. The surface to be connected 21 is the lower surface 13 of the beam 10. A first hole 22 is provided in the surface to be connected 21. A first through hole 23 is provided in the part to be connected 20. The first through hole 23 is provided on the side surface of the part to be connected 20 that intersects with the surface to be connected 21. The first through hole 23 intersects with the first hole 22 inside the part to be connected 20.

[0026] In the first connecting fitting 100, the first shaft member 30 is the first brace 11. A first slit 32 is provided on the end face 31 of the first shaft member 30. Two first slits 32 are provided on the end face 31 of the first shaft member 30. A second through hole 33 is provided in the first shaft member 30. The second through hole 33 is provided on the side surface of the first shaft member 30 that intersects with the end face 31. The second through hole 33 intersects with the first slit 32 inside the first shaft member 30.

[0027] In the first connecting fitting 100, the second shaft member 40 is the second brace 12. A second slit 42 is provided on the end face 41 of the second shaft member 40. Two second slits 42 are provided on the end face 41 of the second shaft member 40. A third through hole 43 is provided in the second shaft member 40. The third through hole 43 is provided on the side surface of the second shaft member 40 that intersects with the end face 41. The third through hole 43 intersects with the second slit 42 inside the second shaft member 40.

[0028] The first coupling fitting 100 comprises a first fitting 110 and a second fitting 120. The first fitting 110 is a single piece of metal. The first fitting 110 is attached to the coupling surface 21. The second fitting 120 is a single piece of metal. The second fitting 120 is attached to the end of the first shaft member 30. The second fitting 120 is attached to the end of the second shaft member 40. The second fitting 120 is coupled to the first fitting 110.

[0029] <First fitting> The first fitting 110 has a first fixing part 111 and a first connecting part 112. The first fixing part 111 is fixed to the part to be connected 20. The first connecting part 112 is connected to the first fixing part 111. The first connecting part 112 is connected to the second fitting 120.

[0030] The first fixing portion 111 has a first support plate 113. The first fixing portion 111 further has a first pole 114. The first support plate 113 of the first fixing portion 111 has a first surface 113A and a second surface 113B. The first surface 113A is in contact with the surface to be joined 21. The second surface 113B is on the opposite side from the first surface 113A.

[0031] The first pole 114 of the first fixing part 111 is, for example, a mortise pipe. The first pole 114 is fixed to the first surface 113A of the first support plate 113 by welding or brazing. The first pole 114 is provided with a first fixing hole 114A. The first pole 114 is inserted into the first hole 22. With the first pole 114 inserted into the first hole 22, the first fixing hole 114A of the first pole 114 and the first through hole 23 of the connecting part 20 overlap.

[0032] The first connecting portion 112 has a first connecting plate 115. The first connecting plate 115 is fixed to the second surface 113B of the first support plate 113 by welding or brazing. The first connecting plate 115 is provided with a first connecting hole 115A. The first connecting plate 115 connects with the second connecting plate 128 of the second fitting 120, which will be described later.

[0033] <Second Fitting> The second fitting 120 has a second fixing portion 121, a third fixing portion 122, and a second connecting portion 123. The second fixing portion 121 is fixed to the end of the first shaft member 30. The third fixing portion 122 is fixed to the end of the second shaft member 40. The second connecting portion 123 is connected to both the second fixing portion 121 and the third fixing portion 122. The second connecting portion 123 is connected to the first connecting portion 112 of the first fitting 110.

[0034] The second fixing portion 121 has a second support plate 124. The second fixing portion 121 further has a first fixing plate 126. The second support plate 124 of the second fixing portion 121 has a third surface 124A and a fourth surface 124B. The third surface 124A faces the end face 31 of the first shaft member 30. The third surface 124A may be in contact with the end face 31 of the first shaft member 30. The fourth surface 124B is on the opposite side from the third surface 124A. The third fixing portion 122 has a third support plate 125. The third support plate 125 has a fifth surface 125A and a sixth surface 125B. The fifth surface 125A faces the end face 41 of the second shaft member 40. The fifth surface 125A may be in contact with the end face 41 of the second shaft member 40. Face 6, 125B is on the opposite side from Face 5, 125A.

[0035] The first fixing plate 126 of the second fixing portion 121 is fixed, for example, to the third surface 124A of the second support plate 124 by welding or brazing. The first fixing plate 126 is inserted into the first slit 32 of the first shaft member 30. The first fixing plate 126 is provided with a second fixing hole 126A. With the first fixing plate 126 inserted into the first slit 32, the second fixing hole 126A of the first fixing plate 126 and the second through hole 33 of the first shaft member 30 overlap.

[0036] The second fixing portion 121 has two first fixing plates 126. The two first fixing plates 126 are the same shape as each other. The third fixing portion 122 has a second fixing plate 127. The second fixing plate 127 is fixed, for example, to the fifth surface 125A of the third support plate 125 by welding or brazing. The second fixing plate 127 is inserted into the second slit 42 of the second shaft member 40. The second fixing plate 127 is provided with a third fixing hole 127A. When the second fixing plate 127 is inserted into the second slit 42, the third fixing hole 127A of the second fixing plate 127 and the third through hole 43 of the second shaft member 40 overlap.

[0037] The third fixing portion 122 has two second fixing plates 127. The two second fixing plates 127 are the same shape as each other. The second connecting portion 123 is connected to the second fixing portion 121 via the second support plate 124. The second connecting portion 123 is connected to the third fixing portion 122 via the third support plate 125. Specifically, the second connecting portion 123 is attached to the fourth surface 124B of the second support plate 124. The second connecting portion 123 is attached to the sixth surface 125B of the third support plate 125.

[0038] The second joint portion 123 has a second joint plate 128. The second joint plate 128 is fixed to the fourth surface 124B of the second support plate 124 and the sixth surface 125B of the third support plate 125 by welding or brazing. The second joint plate 128 is provided with a second joint hole 128A. When the second joint portion 123 is connected to the first joint portion 112, the second joint hole 128A of the second joint plate 128 overlaps with the first joint hole 115A of the first joint plate 115.

[0039] The second connecting portion 123 has two second connecting plates 128. The two second connecting plates 128 are the same shape as each other. The fixing structure or connecting structure of the connecting target portion 20, the first shaft member 30, the second shaft member 40, the first fitting 110, and the second fitting 120 will be described with reference to Figure 3.

[0040] As shown in Figure 3, with the first pole 114 of the first fitting 110 inserted through the first hole 22 of the part to be connected 20, the first fixing shaft member 310 is inserted through the first through hole 23 of the part to be connected 20 and the first fixing hole 114A of the first pole 114. The first fixing shaft member 310 is, for example, a drift pin. The first fitting 110 is fixed to the surface 21 of the part to be connected 20 by the first fixing shaft member 310.

[0041] With the first fixing plate 126 of the second fitting 120 inserted into the first slit 32 of the first shaft member 30, the second fixing shaft member 320 passes through the second through hole 33 of the first shaft member 30 and the second fixing hole 126A of the first fixing plate 126 (see Figure 2). The second fixing shaft member 320 is, for example, a drift pin. The second fitting 120 is fixed to the end of the first shaft member 30 by the second fixing shaft member 320.

[0042] As shown in Figure 3, the second fitting 120 is fixed to the first shaft member 30, and the second fitting 120 is fixed to the second shaft member 40. As shown in Figure 2, with the second fixing plate 127 inserted into the second slit 42 of the second shaft member 40, the third fixing shaft member 330 passes through the third through hole 43 of the second shaft member 40 and the third fixing hole 127A of the second fixing plate 127. The third fixing shaft member 330 is, for example, a drift pin. The second fitting 120 is fixed to the end of the second shaft member 40 by the third fixing shaft member 330.

[0043] As shown in Figure 3, the first connecting shaft member 340 passes through the first connecting hole 115A of the first connecting plate 115 of the first fitting 110 and the second connecting hole 128A of the second connecting plate 128 of the second fitting 120 (see Figure 2). With the first connecting plate 115 sandwiched between the two second connecting plates 128, the first connecting shaft member 340 passes through the first connecting hole 115A of the first connecting plate 115 and the second connecting holes 128A of the two second connecting plates 128. The first connecting shaft member 340 is, for example, a first bolt 341. The shaft portion of the first bolt 341 passes through the first connecting hole 115A and the second connecting hole 128A. The second fitting 120 is connected to the first fitting 110 by fastening the first bolt 341, which is the first connecting shaft member 340, with the first nut 342.

[0044] <Second Coupling Metal Fitting>As shown in FIG. 4, the second coupling metal fitting 200 is a metal fitting for coupling the first shaft member 30 and the third shaft member 50 to the coupling target surface 21 of the coupling target portion 20. Alternatively, the second coupling metal fitting 200 is a metal fitting for coupling the second shaft member 40 and the fourth shaft member 60 to the coupling target surface 21 of the coupling target portion 20 (see FIG. 1). Hereinafter, the second coupling metal fitting 200 that couples the first shaft member 30 and the third shaft member 50 to the foundation 3 will be described. In the second coupling metal fitting 200 of the present embodiment, the coupling target portion 20 is the foundation 3. The coupling target surface 21 is the upper surface 5 of the foundation 3.

[0045] In the second coupling metal fitting 200, the first shaft member 30 is the first cross rib 11. A third slit 34 is provided on the end face 35 of the first shaft member 30. Two third slits 34 are provided on the end face 35 of the first shaft member 30. The end face 35 of the first shaft member 30 is on the side opposite to the end face 31 to which the first coupling metal fitting 100 is fixed. A fourth through hole 36 is provided in the first shaft member 30. The fourth through hole 36 is provided on the side surface of the first shaft member 30 that intersects the end face 35. The fourth through hole 36 intersects the third slit 34 inside the first shaft member 30.

[0046] In the second coupling metal fitting 200, the third shaft member 50 is the first column 15. A fourth slit 52 is provided on the end face 51 of the third shaft member 50. A fifth through hole 53 is provided in the third shaft member 50. The fifth through hole 53 is provided on the side surface of the third shaft member 50 that intersects the end face 51. The fifth through hole 53 intersects the fourth slit 52 inside the third shaft member 50.

[0047] Note that the second coupling metal fitting 200 that couples the second shaft member 40 and the fourth shaft member 60 to the foundation 3 shown in FIG. 1 is also configured in accordance with the second coupling metal fitting 200 described below. The second shaft member 40 is, for example, the second cross rib 12. The fourth shaft member 60 is, for example, the second column 16.

[0048] As shown in FIG. 4, the second coupling fitting 200 includes a third fitting 210 and a fourth fitting 220. The third fitting 210 is a single metal piece. The third fitting 210 is attached to the coupling target surface 21. The third fitting 210 is attached to the end of the third shaft member 50. The fourth fitting 220 is a single metal piece. The fourth fitting 220 is attached to the end of the first shaft member 30. The fourth fitting 220 is coupled to the third fitting 210.

[0049] <Third Fitting> The third fitting 210 has a fourth fixing portion 211, a fifth fixing portion 212, and a third coupling portion 213. The fourth fixing portion 211 is fixed to the coupling target portion 20. The fifth fixing portion 212 is fixed to the end of the third shaft member 50. The third coupling portion 213 is coupled to the fourth fitting 220.

[0050] The fourth fixing portion 211 has a fourth support plate 214. The fourth support plate 214 has a seventh surface 214A and an eighth surface 214B. The seventh surface 214A contacts the coupling target surface 21. The eighth surface 214B is on the opposite side of the seventh surface 214A. The eighth surface 214B faces the end surface 51 of the third shaft member 50. The fifth fixing portion 212 and the third coupling portion 213 are provided on the eighth surface 214B of the fourth support plate 214.

[0051] The fourth fixing portion 211 includes a second hole 215. The second hole 215 is provided in the fourth support plate 214. A fixing member 350 is inserted through the second hole 215. The fixing member 350 is, for example, an anchor bolt 351 protruding from the foundation 3 (see FIG. 5). The anchor bolt 351 is provided on the coupling target surface 21. The anchor bolt 351 passes through the second hole 215. With the fixing member 350 protruding from the foundation 3 inserted through the second hole 215, the third fitting 210 is fixed to the coupling target portion 20 by tightening a nut 352 onto the anchor bolt 351, which is the fixing member 350 (see FIG. 5).

[0052] The fifth fixing portion 212 has a third fixing plate 216. The third fixing plate 216 is fixed, for example, to the eighth surface 214B of the fourth support plate 214 by welding or brazing. The third fixing plate 216 is inserted into the fourth slit 52 of the third shaft member 50. The third fixing plate 216 is provided with a fourth fixing hole 216A. With the third fixing plate 216 inserted into the fourth slit 52 of the third shaft member 50, the fourth fixing hole 216A of the third fixing plate 216 and the fifth through hole 53 of the third shaft member 50 overlap.

[0053] The third joint 213 has a third joint plate 217. The third joint plate 217 is fixed to the eighth surface 214B of the fourth support plate 214 by welding or brazing. The third joint plate 217 is provided with a third joint hole 217A. The third joint plate 217 is connected to the fourth joint plate 225 of the fourth fitting 220, which will be described later.

[0054] <Fourth fitting> The fourth fitting 220 has a sixth fixing portion 221 and a fourth connecting portion 222. The sixth fixing portion 221 is fixed to the end of the first shaft member 30. The fourth connecting portion 222 is connected to the third connecting portion 213 of the third fitting 210.

[0055] The sixth fixing portion 221 has a fifth support plate 223. The sixth fixing portion 221 further has a fourth fixing plate 224. The fifth support plate 223 has a ninth surface 223A and a tenth surface 223B. The ninth surface 223A faces the end face 35 of the first shaft member 30. The ninth surface 223A may be in contact with the end face 35 of the first shaft member 30. The tenth surface 223B is on the opposite side from the ninth surface 223A.

[0056] The fourth fixing plate 224 is fixed, for example, to the ninth surface 223A of the fifth support plate 223 by welding or brazing. The fourth fixing plate 224 is inserted into the third slit 34 of the first shaft member 30. The fourth fixing plate 224 is provided with a fifth fixing hole 224A. With the fourth fixing plate 224 inserted into the third slit 34 of the first shaft member 30, the fifth fixing hole 224A of the fourth fixing plate 224 and the fourth through hole 36 of the first shaft member 30 overlap.

[0057] The sixth fixing portion 221 has two fourth fixing plates 224. The two fourth fixing plates 224 are the same shape as each other. The fourth connecting portion 222 connects to the sixth fixing portion 221. The fourth connecting portion 222 connects to the sixth fixing portion 221 via the fifth support plate 223.

[0058] The fourth joint 222 has a fourth joint plate 225. The fourth joint plate 225 is fixed to the tenth surface 223B of the fifth support plate 223 by welding or brazing. The fourth joint plate 225 is provided with a fourth joint hole 225A. When the fourth joint 222 is connected to the third joint 213, the fourth joint hole 225A of the fourth joint plate 225 overlaps with the third joint hole 217A of the third joint plate 217.

[0059] The fourth coupling portion 222 has two fourth coupling plates 225. The two fourth coupling plates 225 are identical in shape to each other. The fixing or coupling structure of the coupling target portion 20, the first shaft member 30, the third shaft member 50, the third fitting 210, and the fourth fitting 220 will be described with reference to Figures 5 and 6.

[0060] As shown in Figure 5, with the third fixing plate 216 of the third fitting 210 inserted into the fourth slit 52 of the third shaft member 50, the fourth fixing shaft member 360 passes through the fifth through hole 53 of the third shaft member 50 and the fourth fixing hole 216A of the third fixing plate 216 (see Figure 4). The fourth fixing shaft member 360 is, for example, a drift pin. The third fitting 210 is fixed to the end of the third shaft member 50 by the fourth fixing shaft member 360.

[0061] A spacer 230 is provided between the end face 51 of the third shaft member 50 and the fourth support plate 214. The spacer 230 is positioned on the eighth surface 214B of the fourth support plate 214 to suppress contact between the end face 51 of the third shaft member 50 and the protruding portion of the anchor bolt 351, which is the fixing member 350.

[0062] As shown in Figure 6, with the fourth fixing plate 224 of the fourth fitting 220 inserted into the third slit 34 of the first shaft member 30, the fifth fixing shaft member 370 passes through the fourth through hole 36 of the first shaft member 30 and the fifth fixing hole 224A of the fourth fixing plate 224 (see Figure 4). The fifth fixing shaft member 370 is, for example, a drift pin. The fourth fitting 220 is fixed to the end of the first shaft member 30 by the fifth fixing shaft member 370.

[0063] The second connecting shaft member 380 passes through the third connecting hole 217A of the third connecting plate 217 of the third fitting 210 and the fourth connecting hole 225A of the fourth connecting plate 225 of the fourth fitting 220 (see Figure 6). With the third connecting plate 217 sandwiched between the two fourth connecting plates 225, the second connecting shaft member 380 passes through the third connecting hole 217A of the third connecting plate 217 and the fourth connecting holes 225A of the two fourth connecting plates 225. The second connecting shaft member 380 is, for example, a second bolt 381. The shaft portion of the second bolt 381 passes through the third connecting hole 217A and the fourth connecting hole 225A. The fourth fitting 220 engages with the third fitting 210 by fastening the second bolt 381, which is the second connecting shaft member 380, to the second nut 382.

[0064] <Operation of this embodiment> The first operation of this embodiment will now be described. With the first coupling fitting 100, by coupling the second fitting 120 to the first fitting 110, a portion is provided in the coupling target portion 20 where the first shaft member 30 and the second shaft member 40 are coupled.

[0065] The second function of this embodiment will now be described. As a structure for joining multiple shaft members, a joining structure is known in which a single plate is screwed to each of the multiple shaft members. The single plate is attached, for example, to the side of each of the multiple shaft members. In an exposed structure, if a conventional joining structure using a single plate is used, the plate attached to the side of the shaft member is conspicuous, which may reduce the aesthetic appeal of the building 1. In the first joining fitting 100, the only exposed portion is the joining surface 21 of the joining target portion 20 of the first joining fitting 100 and the portion between the end face 31 of the first shaft member 30 and the end face 41 of the second shaft member 40. Since the exposed portion of the first joining fitting 100 is small, even if the first joining fitting 100 is used in an exposed structure, the first joining fitting 100 is less conspicuous.

[0066] A third function of this embodiment will now be described. When connecting a shaft member that is inclined at an angle with respect to the surface to be connected 21, such as the first shaft member 30 or the second shaft member 40, to the part to be connected 20, one possible method is to cut the end of the shaft member at an angle and bring the cut surface into contact with the surface to be connected 21. In this respect, the first connecting fitting 100 allows the shaft member that is inclined at an angle to be connected to the surface to be connected 21 without making the above-mentioned angle cut. For this reason, the connection structure using the first connecting fitting 100 has higher workability for the connection of multiple shaft members compared to conventional connection structures using angle cuts.

[0067] <Effects of this embodiment> The effects of this embodiment will be explained. (1) The first connecting fitting 100 is a metal fitting for connecting a first shaft member 30 and a second shaft member 40 to the connecting surface 21 of the connecting target part 20 in a building 1. The first shaft member 30 is positioned diagonally with respect to the connecting surface 21. The second shaft member 40 is positioned diagonally with respect to the connecting surface 21. The first connecting fitting 100 comprises a first fitting 110 attached to the connecting surface 21, and a second fitting 120 attached to the end of the first shaft member 30 and to the end of the second shaft member 40. The second fitting 120 is connected to the first fitting 110.

[0068] In this configuration, the first shaft member 30 and the second shaft member 40 are attached to the second fitting 120. Since the second fitting 120 is a single fitting, the structure of the first connecting fitting 100 can be simplified compared to the case where the second fitting 120 is composed of multiple fittings.

[0069] (2) The first fitting 110 has a first fixing portion 111 and a first connecting portion 112. The first fixing portion 111 is fixed to the surface to be connected 21. The first connecting portion 112 is connected to the first fixing portion 111 and connects to the second fitting 120. The first connecting portion 112 has a first connecting plate 115 in which a first connecting hole 115A is provided. The second fitting 120 has a second fixing portion 121, a third fixing portion 122 and a second connecting portion 123. The second fixing portion 121 is fixed to the end of the first shaft member 30. The third fixing portion 122 is fixed to the end of the second shaft member 40. The second connecting portion 123 is connected to both the second fixing portion 121 and the third fixing portion 122 and connects to the first fitting 110. The second connecting portion 123 has a second connecting plate 128 in which a second connecting hole 128A is provided. The first connecting shaft member 340 passes through the first connecting hole 115A and the second connecting hole 128A. With this configuration, the second fitting 120 can be connected to the first fitting 110 by the first connecting shaft member 340.

[0070] (3) The second coupling portion 123 has two second coupling plates 128. With the first coupling plate 115 sandwiched between the two second coupling plates 128, the first coupling shaft member 340 is inserted through the first coupling hole 115A of the first coupling plate 115 and the second coupling holes 128A of the two second coupling plates 128.

[0071] In this configuration, the first fitting 110 and the second fitting 120 are connected with the first connecting plate 115 sandwiched between the two second connecting plates 128. Therefore, the effect of suppressing the movement of the second fitting 120 relative to the first fitting 110 in the direction in which the two second connecting plates 128 sandwich the first connecting plate 115 is improved.

[0072] (4) A first hole 22 is provided in the surface to be joined 21. A first through hole 23 intersects with the first hole 22 in the part to be joined 20. The first fixing part 111 has a first pole 114 which is inserted into the first hole 22 and has a first fixing hole 114A. With the first pole 114 inserted through the first hole 22, the first fixing shaft member 310 passes through the first through hole 23 and the first fixing hole 114A. With this configuration, the first fitting 110 can be attached to the part to be joined 20 by the first fixing shaft member 310.

[0073] (5) A first slit 32 is provided on the end face 31 of the first shaft member 30. A second through hole 33 intersects with the first slit 32 is provided in the first shaft member 30. The second fixing part 121 has a first fixing plate 126 which is inserted into the first slit 32 and has a second fixing hole 126A. With the first fixing plate 126 inserted into the first slit 32, the second fixing shaft member 320 passes through the second through hole 33 and the second fixing hole 126A. A second slit 42 is provided on the end face 41 of the second shaft member 40. A third through hole 43 intersects with the second slit 42 is provided in the second shaft member 40. The third fixing part 122 has a second fixing plate 127 which is inserted into the second slit 42 and has a third fixing hole 127A. With the second fixing plate 127 inserted into the second slit 42, the third fixing shaft member 330 passes through the third through hole 43 and the third fixing hole 127A.

[0074] With this configuration, the second fitting 120 can be attached to the first shaft member 30 by the second fixed shaft member 320, and can also be fixed to the second shaft member 40 by the third fixed shaft member 330.

[0075] (6) The building 1 comprises a frame 2. The frame 2 comprises a connecting portion 20 having a connecting surface 21, a first shaft member 30, a second shaft member 40, and a first connecting fitting 100. The ends of the first shaft member 30 and the end of the second shaft member 40 are connected to the connecting surface 21 by the first connecting fitting 100.

[0076] In this configuration, the first shaft member 30 and the second shaft member 40 are connected to the connection surface 21 by the first connecting fitting 100. Since the second fitting 120 is a single fitting, the appearance of the connection between the connection target 20 and the first shaft member 30 and the second shaft member 40 can be made simpler compared to the case where the second fitting 120 is composed of two or more fittings. Therefore, the aesthetic design of the connection between the connection target 20 and the first shaft member 30 and the second shaft member 40 can be improved.

[0077] <Modifications> The above embodiment is an example of possible forms of the building 1 and the first connecting fitting 100, and is not intended to limit their form. The building 1 and the first connecting fitting 100 may take forms different from those exemplified in the above embodiment. Examples include forms in which some of the configurations of the embodiment are replaced, modified, or omitted, or forms in which new configurations are added to the embodiment. Modifications of the embodiment are shown below.

[0078] As shown in Figure 7, the first connecting fitting 100 may be provided on the diagonal members of the truss structure. In the example in Figure 7, the building 1 comprises a fifth axis member 70 and a sixth axis member 80 arranged parallel to the fifth axis member 70. A plurality of seventh axis members 90 are provided between the fifth axis member 70 and the sixth axis member 80. Each of the plurality of seventh axis members 90 is arranged at an angle to the fifth axis member 70 and the sixth axis member 80. The first connecting fitting 100 connects the ends of two seventh axis members 90 to either the fifth axis member 70 or the sixth axis member 80. In Figure 7, a truss structure in which the fifth axis member 70 and the sixth axis member 80 are aligned vertically is illustrated, but the first connecting fitting 100 may also be used in a planar truss structure in which the fifth axis member 70 and the sixth axis member 80 are aligned horizontally.

[0079] In this embodiment, the surface to which the first connecting fitting 100 is fixed, the lower surface 13 of the beam 10, is also the upper surface 5 of the foundation 3. In this modified example, for example, the lower end of the first brace 11 and the lower end of the second brace 12 are connected to the upper surface 5 of the foundation 3 by the first connecting fitting 100.

[0080] - The first support plate 113 may be omitted from the first fixing portion 111 of the first fitting 110. In this modified example, the first connecting plate 115 of the first connecting portion 112 is directly connected to the first pole 114 of the first fixing portion 111.

[0081] - The second support plate 124 may be omitted from the second fixing portion 121 of the second fitting 120. Also, the third support plate 125 may be omitted from the third fixing portion 122 of the second fitting 120. In this modified example, the second connecting plate 128 of the second connecting portion 123 is directly connected to the first fixing plate 126 of the second fixing portion 121 and the second fixing plate 127 of the third fixing portion 122.

[0082] - The second fixing portion 121 may have only one first fixing plate 126. Also, the third fixing portion 122 may have only one second fixing plate 127. - The second connecting portion 123 may have only one second connecting plate 128.

[0083] - In the first fitting 110, the first fixing portion 111 may be fixed to the connecting portion 20 by a fixing structure, and in the second fitting 120, the second fixing portion 121 may be fixed to the end of the first shaft member 30 by a fixing structure, and in the second fitting 120, the third fixing portion 122 may be fixed to the end of the second shaft member 40 by a fixing structure, and in the first fitting 110, the first fixing portion 111 may be fixed to the connecting portion 20 by a fixing structure, and in the second fitting 120, the third fixing portion 122 may be fixed to the end of the second shaft member 40 by a fixing structure, and in the second fitting 120.

[0084] This specification discloses the following technologies: [Appendix 1] A coupling fitting for a building, which connects a first shaft member and a second shaft member, which are positioned diagonally with respect to the surface to be coupled, to a surface to be coupled, the coupling fitting comprising: a first fitting attached to the surface to be coupled; and a second fitting attached to the end of the first shaft member and to the end of the second shaft member, wherein the second fitting is coupled to the first fitting.

[0085] [Note 2] The coupling fitting according to Note 1, wherein the first fitting has a first fixing portion fixed to the part to be coupled, and a first coupling portion connected to the first fixing portion and coupled to the second fitting, and the second fitting has a second fixing portion fixed to the end of the first shaft member, a third fixing portion fixed to the end of the second shaft member, and a second coupling portion connected to both the second fixing portion and the third fixing portion and coupled to the first coupling portion of the first fitting, the first coupling portion has a first coupling plate provided with a first coupling hole, and the second coupling portion has a second coupling plate provided with a second coupling hole, and the first coupling shaft member passes through the first coupling hole and the second coupling hole.

[0086] [Note 3] The coupling fitting according to Note 2, wherein the second coupling portion has two second coupling plates, and the first coupling shaft member passes through the first coupling hole and the two second coupling holes while the first coupling plate is sandwiched between the two second coupling plates.

[0087] [Note 4] The coupling fitting according to Note 2, wherein the coupling target surface is provided with a first hole, the coupling target portion is provided with a first through hole intersecting the first hole, the first fixing portion has a pole that is inserted into the first hole and has a first fixing hole, and with the pole inserted through the first hole, the first fixing shaft member passes through the first through hole and the first fixing hole.

[0088] [Note 5] The coupling fitting according to Note 2, wherein the end face of the first shaft member is provided with a first slit, the first shaft member is provided with a second through hole intersecting the first slit, the second fixing part has a first fixing plate that is inserted into the first slit and has a second fixing hole, and with the first fixing plate inserted into the first slit, the second fixing shaft member passes through the second through hole and the second fixing hole, the end face of the second shaft member is provided with a second slit, the second shaft member is provided with a third through hole intersecting the second slit, the third fixing part has a second fixing plate that is inserted into the second slit and has a third fixing hole, and with the second fixing plate inserted into the second slit, the third fixing shaft member passes through the third through hole and the third fixing hole.

[0089] [Note 6] A building having a frame, wherein the frame comprises a connecting portion having a connecting surface, a first axial member positioned diagonally with respect to the connecting surface, a second axial member positioned diagonally with respect to the connecting surface, and a connecting fitting described in any one of Notes 1 to 5, wherein the end of the first axial member and the end of the second axial member are connected to the connecting surface by the connecting fitting.

[0090] 1...Building, 2...Structure, 20...Part to be connected, 21...Surface to be connected, 22...First hole, 23...First through hole, 30...First shaft member, 32...First slit, 33...Second through hole, 40...Second shaft member, 42...Second slit, 43...Third through hole, 100...First connecting fitting, 110...First fitting, 111...First fixing part, 112...First connecting part, 114A...First fixing hole, 115...First connecting plate, 11 5A...First connecting hole, 120...Second fitting, 121...Second fixing part, 122...Third fixing part, 123...Second connecting part, 126...First fixing plate, 126A...Second fixing hole, 127...Second fixing plate, 127A...Third fixing hole, 128...Second connecting plate, 128A...Second connecting hole, 310...First fixing shaft member, 320...Second fixing shaft member, 330...Third fixing shaft member, 340...First connecting shaft member.

Claims

1. A coupling fitting for a building, which connects a first shaft member and a second shaft member, both positioned diagonally to the surface to be joined, to the surface to be joined of a part to be joined, comprising: a first fitting attached to the surface to be joined; and a second fitting attached to the end of the first shaft member and to the end of the second shaft member, wherein the second fitting is connected to the first fitting.

2. The coupling fitting according to claim 1, wherein the first fitting has a first fixing portion fixed to the part to be coupled, and a first coupling portion connected to the first fixing portion and coupled to the second fitting, the second fitting has a second fixing portion fixed to the end of the first shaft member, a third fixing portion fixed to the end of the second shaft member, and a second coupling portion connected to both the second fixing portion and the third fixing portion and coupled to the first coupling portion of the first fitting, the first coupling portion has a first coupling plate provided with a first coupling hole, the second coupling portion has a second coupling plate provided with a second coupling hole, and the first coupling shaft member passes through the first coupling hole and the second coupling hole.

3. The coupling fitting according to claim 2, wherein the second coupling portion has two second coupling plates, and the first coupling shaft member passes through the first coupling hole and the two second coupling holes while the first coupling plate is sandwiched between the two second coupling plates.

4. The coupling fitting according to claim 2 or 3, wherein the coupling surface is provided with a first hole, the coupling portion is provided with a first through hole intersecting the first hole, the first fixing portion has a pole that is inserted into the first hole and has a first fixing hole, and with the pole inserted through the first hole, the first fixing shaft member passes through the first through hole and the first fixing hole.

5. The coupling fitting according to any one of claims 2 to 4, wherein the end face of the first shaft member is provided with a first slit, the first shaft member is provided with a second through hole intersecting the first slit, the second fixing part has a first fixing plate that is inserted into the first slit and has a second fixing hole, the second fixing shaft member passes through the second through hole and the second fixing hole with the first fixing plate inserted into the first slit, the end face of the second shaft member is provided with a second slit, the second shaft member is provided with a third through hole intersecting the second slit, the third fixing part has a second fixing plate that is inserted into the second slit and has a third fixing hole, the third fixing shaft member passes through the third through hole and the third fixing hole with the second fixing plate inserted into the second slit.

6. A building comprising a frame, wherein the frame comprises a connecting portion having a connecting surface, a first axis member positioned diagonally with respect to the connecting surface, a second axis member positioned diagonally with respect to the connecting surface, and a connecting fitting according to any one of claims 1 to 5, wherein the end of the first axis member and the end of the second axis member are connected to the connecting surface by the connecting fitting.

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