Brace fixing bracket and brace mounting structure

Abstract

To provide a brace fixing metal fitting in which a fixing portion of each attaching face portion and each structure member is not damaged (plastically deformed) even when a moment and a peeling force are applied to the brace fixing metal fitting.SOLUTION: A brace fixing metal fitting 1 comprises: a first attaching face portion 10 attached to a face 2a of a column 2 forming an internal corner IS and having a first axis AX1 along an axial direction of the column 2; a second attaching face portion 20 attached to a face 3a of a horizontal member 3 forming the internal corner IS and having a second axis AX2 along an axial direction of the horizontal member 3; and a connection face 30 which connects the first attaching face portion 10 and the second attaching face portion 20 and to which a brace 4 is attached. The first attaching face portion 10 is provided with a plurality of first machine screw holes into which machine screws screwed into the column 2 are inserted, and the first machine screw holes are concentrated in a region close to a lower end and a region close to an upper end. The second attaching face portion 20 is provided with a plurality of second machine screw holes into which machine screws screwed into the horizontal member 3 are inserted, and the second machine screw holes are concentrated in a region close to a right end and a region close to a left end.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a brace fixing bracket used to attach braces or diagonal braces to a framework made up of columns and cross members or cross members assembled together in a wooden frame building, and to a brace mounting structure using the brace fixing bracket. [Background technology]

[0002] In buildings with a wooden frame structure, wooden pillars are arranged vertically and wooden cross members (beams, foundations, etc.) are arranged horizontally. The pillars and cross members, or the cross members themselves, are assembled to form the skeleton. Braces or diagonal braces (hereinafter referred to as "braces, etc.") are attached along the diagonal lines of the rectangle formed by the skeleton to reinforce the skeleton structure. In this case, braces, etc. are often installed by attaching metal fittings (hereinafter referred to as "brace fixing metal fittings") across the joined columns and cross members, etc. and fixing the brace, etc. to the brace fixing metal fittings, but because wiring and piping or metal fittings that secure the columns and cross members will be placed in the inside corners of the skeleton (rectangle) formed by the columns and cross members, etc., it is desirable to install the brace fixing metal fittings across the columns and cross members, etc., leaving space in the inside corners of the skeleton. Furthermore, like other metal fittings, brace fixing fittings are required to be easily manufactured at low cost. For this reason, various proposals have been made regarding the mounting structure of braces and brace fixing metal fittings, such as structures and shapes that leave space in the corners of the framework and improving the workability of brace fixing metal fittings.

[0003] For example, Patent Document 1 (JP 2005-16102 A) discloses an earthquake-resistant reinforcement device 41 (paragraphs

[0051] to

[0059] , and figures 10 to 12 in the cited document 1) which has a first mounting portion 42 attached to a beam 2, a second mounting portion 43 attached to a column 3, and a connecting portion 44 connecting the first mounting portion 42 and the second mounting portion 43, wherein the first mounting portion 42 has a flat plate portion 42a and a rib portion 42b, the second mounting portion 43 has a flat plate portion 43a and a rib portion 43b, the connecting portion 44 has a flat plate portion 44a and a rib portion 44b, and a brace 17 is attached to the rib portion 44b of the connecting portion 44, and which is attached to the beam 2 and the column 3 so that a space remains in the recessed corner formed by the beam 2 and the column 3. In the earthquake-resistant reinforcement device 41 of Patent Document 1, a bolt 14a is inserted through a hole 42c provided in the flat plate portion 42a and a through hole 2h provided in the beam 2 and screwed into a nut 14b, so that a first mounting portion 42 is attached to the main surface 2b of the beam 2, and a bolt 14a is inserted through a hole 43c provided in the flat plate portion 43a and a through hole 3f provided in the column 3 and screwed into a nut 14b, so that a second mounting portion 43 is attached to the main surface 3b of the column 3. However, when the earthquake-resistant reinforcement device 41 of Patent Document 1 is manufactured by processing a single metal plate, while the flat plate portions 42a, 43a, 44a and the rib portions 42b, 43b, 44b can be formed by bending, the rib portions 42b, 43b, 44b need to be connected by welding or the like, which has the disadvantage of poor workability. Generally, when fittings are attached to beams or columns with bolts and nuts, the inner diameter of the through hole in the beam or column is made slightly larger than the diameter of the bolt to provide a clearance between the through hole and the bolt. Therefore, when attaching the earthquake-resistant reinforcement device 41 of Patent Document 1 to the beam 2 and column 3, a clearance is provided between the through holes 2h, 3f and the bolt 14a. However, if an earthquake, strong winds, or the like causes the joint between the beam 2 and the column 3 to deform and a tensile force acts on the brace 17, resulting in a shear force that tries to shift the first mounting portion 42 and the second mounting portion 43 from the beam 2 and the column 3, the first mounting portion 42 and the second mounting portion 43 will shift by the amount of the above-mentioned clearance, creating a problem in that it is not possible to completely prevent initial deformation of the joint between the beam 2 and the column 3.

[0004] In this regard, Patent Document 2 (JP 2005-36625 A) discloses a hardware 101 with a hold-down function, in which an upper steel plate 10A of a box-shaped diagonal brace hardware and a lower steel plate 10B of a box-shaped hardware are welded to a channel-shaped steel material 10C, a reinforcing bar brace 7 is inserted and fixed to the welded surface of the upper steel plate 10A, the column contact surface 10A2 of the upper steel plate 10A is fixed to the column 2 with a column fixing bolt 11A and a hold-down portion fixing screw 14, and the lower steel plate 10B is fixed to the beam 4 with a cross member fixing bolt 11B. In the metal fitting 101 of Patent Document 2, although the column contact surface 10A2 of the upper steel plate 10A is fixed to the column 2 by the column fixing bolt 11A and the hold-down portion fixing screw 14, the lower steel plate 10B is fixed to the beam 4 only by the cross member fixing bolt 11B. Therefore, when a shear force acts to shift the upper steel plate 10A and the lower steel plate 10B from the column 2 and the beam 4, initial deformation of the joint between the column 2 and the beam 4 cannot be completely prevented. Furthermore, in the metal fitting 101 of Patent Document 2, it is not possible to leave space in the corner formed by the column 2 and the beam 4, and the upper iron plate 10A and the lower iron plate 10B are welded to the channel steel material 10C, which results in extremely poor workability.

[0005] Next, Patent Document 3 (JP 2012-132258 A) discloses a joint hardware having a first fixing portion 5b and a second fixing portion 5c for attaching and fixing to a pillar 1 and a beam 2 that respectively constitute a joint portion 3 of a wooden structure, in which the first fixing portion 5b has a plurality of mounting holes 7 arranged in an even number of rows spaced at a constant interval D in the width direction and arranged at a constant pitch P by shifting the positions of adjacent rows in the length direction, forming a staggered arrangement, and the second fixing portion 5c has a plurality of mounting holes 7 formed in an inverted staggered arrangement in which the staggered arrangement is reversed in the width direction, and fixing members 6 such as coach bolts, screws or nails are inserted into the mounting holes 7 to attach and fix the first fixing portion 5b and the second fixing portion 5c to the pillar 1 and the beam 2. Patent Document 4 (Design Registration No. 1511570) discloses an architectural hardware consisting of a roughly rectangular mounting surface portion fixed to the side of a pillar with screws, a roughly rectangular mounting surface portion fixed to the top surface of a cross member with screws, and a roughly isosceles trapezoidal connecting surface portion that connects these mounting surface portions, with a hole provided in the center of the connecting surface portion to allow a diagonal brace to be attached. In the joint hardware of Patent Document 3, when a brace such as that of Patent Document 3 is attached to the support plate portion 5a connecting the first fixed portion 5b and the second fixed portion 5c, even if a tensile force acts on the brace as the joint portion 3 attempts to deform due to an earthquake, strong winds, etc., and a shear force acts to shift the first fixed portion 5b and the second fixed portion 5c from the column 1 and beam 2, the first fixed portion 5b and the second fixed portion 5c are fixed to the column 1 and beam 2 with fixing members 6 such as coach bolts, screws, nails, etc. rather than bolts and nuts, so initial deformation of the connection between the beam 2 and column 3 as in Patent Document 1, i.e., initial deformation of the joint portion 3, does not occur. In Patent Document 4, even if an earthquake, strong winds, or the like causes the joint between the column and the cross member to deform and a tensile force acts on the brace, and a shear force acts to shift the mounting surface from the column or cross member, no initial deformation occurs at the joint between the column and the cross member because the mounting surface is fixed to the column or cross member with screws.

[0006] Incidentally, when a metal joint in Patent Document 3 or a metal joint in Patent Document 4 has two mounting surfaces that are attached to the sides (surfaces that form an inside corner) of two structural members to be joined, such as a pillar and beam (cross member), and a connecting surface that connects the mounting surfaces, and has a brace attached to the connecting surface, and is installed in the inside corner formed by two structural members leaving a space, if a tensile force acts on the brace as the joint between the two structural members attempts to deform due to an earthquake, strong winds, etc., in addition to the shear forces described above, a moment may act that tends to rotate each mounting surface along the side of each structural member around its center or near its center. When such a moment acts, an excessive force acts on the portion of the fixing member 6 (screw of Patent Document 4) of Patent Document 3 that is located away from the center of the first fixing portion 5b and the second fixing portion 5c (mounting surface portion of Patent Document 4) in the longitudinal direction, causing a problem that this portion is damaged (plastically deformed). Furthermore, in the connection hardware of Patent Document 3 to which a brace is attached (the architectural hardware of Patent Document 4), when a tensile force acts on the brace as the connection section 3 or the connection section between the column and the cross member attempts to deform due to an earthquake, strong winds, etc., in addition to the shear forces and moments described above, a peel-off force acts that attempts to peel the first fixed section 5b and the second fixed section 5c (the mounting surface sections in Patent Document 4) off the column and beam (the cross member in Patent Document 4), and the stress acting on the first fixed section 5b and the second fixed section 5c (the mounting surface sections in Patent Document 4) due to this peel-off force is concentrated in the area close to the connection section 3 (the connection section between the column and the cross member in Patent Document 4). As a result, the peeling force acting on the first fixing portion 5b and the second fixing portion 5c (the mounting surface portion in Patent Document 4) causes a problem in that the portion fixed by the fixing member 6 (the screw in Patent Document 4) located near the joint portion 3 (the connection portion between the column and the cross member in Patent Document 4) is damaged (plastically deformed). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2005-16102 A [Patent Document 2] JP 2005-36625 A [Patent Document 3] JP 2012-132258 A [Patent Document 4] Design Registration No. 1511570 Summary of the Invention [Problem to be solved by the invention]

[0008] The problem that the present invention aims to solve is to prevent initial deformation of the joint between two structural members in a brace fixing bracket that has two mounting surface portions attached to the side surfaces (surfaces that form an inside corner) of two structural members to be joined and connecting surface portions to which a brace or the like is attached by connecting the mounting surface portions, or in a brace mounting structure using this brace fixing bracket, even if a tensile force acts on the brace as the joint between the two structural members attempts to deform and a shear force acts that attempts to shift each mounting surface portion from each structural member, and to prevent damage (plastic deformation) of each mounting surface portion and the fixed portion of each structural member even if a moment acts that attempts to rotate each mounting surface portion along the surface of each structural member around its center or near its center, or a peeling force acts that attempts to peel each mounting surface portion off of each structural member. [Means for solving the problem]

[0009] The invention of claim 1 relates to a brace fixing bracket that is attached to a first structural member consisting of a pillar or a cross member and a second structural member assembled to the first structural member, leaving a space at an inside corner between the first structural member and the second structural member, the brace fixing bracket comprising a first mounting surface portion that is attached to a surface that forms the front corner of the first structural member and has a first axis along the axial direction of the first structural member, a second mounting surface portion that is attached to a surface that forms the front corner of the second structural member and has a second axis along the axial direction of the second structural member, and a connecting surface portion that connects the first mounting surface portion and the second mounting surface portion and to which a brace is attached, The connecting surface portion is made of a single metal plate, a portion that spans the first mounting surface portion and the connecting surface portion is continuous, and a portion that spans the second mounting surface portion and the connecting surface portion is continuous,The above-mentioned problem is solved by providing a brace fixing bracket in which the first mounting surface portion has a first inside corner side end located on the inside corner side and a first non-inside corner side end opposite the first inside corner side end, the first mounting surface portion is provided with a plurality of first linear member holes through which a linear member to be screwed or driven into the first structural member is inserted, the first linear member holes being concentrated in an area adjacent to the first inside corner side end and an area adjacent to the first non-inside corner side end, and the second mounting surface portion has a second inside corner side end located on the inside corner side and a second non-inside corner side end opposite the second inside corner side end, the second mounting surface portion is provided with a plurality of second linear member holes through which a linear member to be screwed or driven into the second structural member is inserted, the second linear member holes being concentrated in an area adjacent to the second inside corner side end and an area adjacent to the second non-inside corner side end.

[0010] The invention of claim 2 solves the above-mentioned problem by providing a brace fixing bracket in which a first rod-shaped member hole is provided in the area near the first inside corner end, through which a rod-shaped member to be inserted into the first structural member is inserted, and a second rod-shaped member hole is provided in the area near the second inside corner end, through which a rod-shaped member to be inserted into the second structural member is inserted.

[0011] The invention of claim 3 solves the above-mentioned problem by providing a brace fixing bracket in which the number of first linear member holes provided in the area adjacent to the first inside corner side end is greater than the number of first linear member holes provided in the area adjacent to the first non-inside corner side end, and the number of second linear member holes provided in the area adjacent to the second inside corner side end is greater than the number of second linear member holes provided in the area adjacent to the second non-inside corner side end.

[0012] The invention of claim 4 solves the above-mentioned problem by providing a brace fixing bracket having a structure in which a single metal plate is bent, and the first mounting surface portion and the second mounting surface portion are formed by bending from the connecting surface portion.

[0013] The invention of claim 5 solves the above-mentioned problem by providing a brace fixing bracket in which the connecting surface portion has a substantially isosceles trapezoidal shape.

[0014] The invention of claim 6 is a mounting structure for a brace that is mounted via a brace fixing bracket to a first structural member consisting of a pillar or a cross member and a second structural member assembled to the first structural member, leaving a space at an inside corner between the first structural member and the second structural member, the brace fixing bracket comprising a first mounting surface portion that is attached to a surface that forms the front corner of the first structural member and has a first axis along the axial direction of the first structural member, a second mounting surface portion that is attached to a surface that forms the front corner of the second structural member and has a second axis along the axial direction of the second structural member, and a connecting surface portion that connects the first mounting surface portion and the second mounting surface portion and to which a brace is attached, The connecting surface portion is made of a single metal plate, a portion that spans the first mounting surface portion and the connecting surface portion is continuous, and a portion that spans the second mounting surface portion and the connecting surface portion is continuous, The first mounting surface portion has, in the direction of the first axis, a first inside corner side end located on the inside corner side and a first non-inside corner side end opposite the first inside corner side end, the first mounting surface portion is provided with a plurality of first linear member holes through which a linear member to be screwed or driven into the first structural member is inserted, the first linear member holes being concentrated in a region adjacent to the first inside corner side end and a region adjacent to the first non-inside corner side end, the second mounting surface portion has, in the direction of the second axis, a second inside corner side end located on the inside corner side and a second non-inside corner side end opposite the second inside corner side end, the second mounting surface portion is provided with a plurality of second linear member holes through which a linear member to be screwed or driven into the second structural member is inserted, the second linear member holes being concentrated in a region adjacent to the second inside corner side end and a region adjacent to the second non-inside corner side end.This solves the above-mentioned problem by providing a mounting structure for a brace.

[0015] The invention of claim 7 solves the above-mentioned problem by providing a brace mounting structure in which a first rod-shaped member hole through which a rod-shaped member to be inserted into the first structural member is inserted is provided in the area near the first inside corner side end, and a second rod-shaped member hole through which a rod-shaped member to be inserted into the second structural member is inserted is provided in the area near the second inside corner side end. Effect of the Invention

[0016] In the brace fixing bracket of the invention described in claim 1, even if a tensile force acts on the brace as the joint between the first structural member and the second structural member attempts to deform and a shear force acts to shift the first mounting surface portion and the second mounting surface portion from the first structural member and the second structural member, no initial deformation occurs at the joint between the first structural member and the second structural member, even if a moment acts to rotate the first mounting surface portion along the surface of the first structural member around its center or near its center, the fixed portion between the first mounting surface portion and the first structural member is not damaged (plastically deformed), and even if a moment acts to rotate the second mounting surface portion along the surface of the second structural member around its center or near its center, the fixed portion between the second mounting surface portion and the second structural member is not damaged (plastically deformed).

[0017] The brace fixing bracket of the invention described in claim 2 further has the effect that even if a peel-off force acts to peel the first mounting surface portion from the first structural member, the fixed portion between the first mounting surface portion and the first structural member is not damaged (plastically deformed), and even if a peel-off force acts to peel the second mounting surface portion from the second structural member, the fixed portion between the second mounting surface portion and the second structural member is not damaged (plastically deformed).

[0018] The brace fixing bracket of the invention described in claim 3 further has the effect that even if a peel-off force acts to peel the first mounting surface portion from the first structural member, the fixed portion between the first mounting surface portion and the first structural member is further prevented from being damaged (plastic deformation), and even if a peel-off force acts to peel the second mounting surface portion from the second structural member, the fixed portion between the second mounting surface portion and the second structural member is further prevented from being damaged (plastic deformation).

[0019] The brace fixing bracket according to the invention recited in claim 4 has a further advantage in that the first mounting surface portion and the second mounting surface portion can be easily produced from a single metal plate.

[0020] The brace fixing hardware of the invention recited in claim 5 has a further effect of making it possible to easily leave a space at the internal corner between the first structural member and the second structural member.

[0021] In the brace mounting structure of the invention described in claim 6, even if a tensile force acts on the brace as the joint between the first structural member and the second structural member attempts to deform and a shear force acts to shift the first mounting surface portion and the second mounting surface portion from the first structural member and the second structural member, no initial deformation occurs at the joint between the first structural member and the second structural member, even if a moment acts to rotate the first mounting surface portion along the surface of the first structural member around its center or near its center, the fixed portion between the first mounting surface portion and the first structural member is not damaged (plastically deformed), and even if a moment acts to rotate the second mounting surface portion along the surface of the second structural member around its center, the fixed portion between the second mounting surface portion and the second structural member is not damaged (plastically deformed).

[0022] The brace mounting structure of the invention described in claim 7 further has the effect that even if a peel-off force acts to peel the first mounting surface portion from the first structural member, the fixed portion between the first mounting surface portion and the first structural member is not damaged (plastically deformed), and even if a peel-off force acts to peel the second mounting surface portion from the second structural member, the fixed portion between the second mounting surface portion and the second structural member is not damaged (plastically deformed). [Brief description of the drawings]

[0023] [Figure 1] FIG. 1 is a perspective view showing a configuration of a brace mounting structure according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view of the brace fixing bracket 1. [Diagram 3] FIG. 2 is a left side view of the brace fixing bracket 1. [Figure 4] Plan view of brace fixing bracket 1. [Diagram 5] FIG. 5 is a front view of the brace fixing bracket 1. FIG. [Figure 6] FIG. 2 is a rear view of the brace fixing bracket 1. [Figure 7] 5 is a cross-sectional view taken along line AA in FIG. 4. [Figure 8] 6 is an enlarged cross-sectional view taken along lines BB, CC, DD and EE in FIG. 5 . [Figure 9] FIG. 2 is an exploded view of the brace fixing bracket 1. [Figure 10] 1 is a perspective view of a brace fixing bracket 1 placed against an inside corner formed by a column 2 and a cross member 3. FIG. [Figure 11] 1. FIG. 4 is an explanatory diagram illustrating a first function of the brace mounting structure shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] [Brace mounting structure configuration] FIG. 1 is a perspective view showing the configuration of a brace mounting structure of an embodiment of the present invention, in which 1 is a brace fixing bracket, 2 is a column, 2a is the inside corner surface, 3 is a cross member, 3a is the inside corner surface, 4 is a brace, 4a is a shuttlecock, 4b is a bolt, 10 is the first mounting surface, 20 is the second mounting surface, 30 is the connecting surface, AX1 is the first axis, AX2 is the second axis, IS is the inside corner, and SP is space. In the figure, X is the direction along the axial direction (longitudinal direction) of cross member 3 (left-right direction), Y is the direction perpendicular to the X direction and the horizontal direction (front-back direction), and Z is the direction along the axial direction of column 2 and perpendicular to the horizontal plane (XY plane) (up-down direction). In the brace mounting structure shown in FIG. 1, a brace 4 is attached via a brace fixing bracket 1 to an inside corner IS (shown by a two-dot chain line) formed by a column 2 and a cross member 3 . The pillars 2 are the first structural members of the present invention, and the cross members 3 are the second structural members of the present invention, such as foundations or beams. The pillars 2 and the cross members 3 are made of wooden materials, such as cypress, Japanese cypress, and cedar, and the pillars 2 and the cross members 3 are assembled so that they are perpendicular or nearly perpendicular to each other. The brace fixing bracket 1 is composed of a first mounting surface portion 10, a second mounting surface portion 20, and a connecting surface portion 30, and the first mounting surface portion 10 and the second mounting surface portion 20 are connected by the connecting surface portion 30 (details will be described later). The first mounting surface portion 10 is attached to the surface 2a of the inside corner IS of the column 2 and has a first axis AX1 along the axial direction (Z direction) of the column 2, and the second mounting surface portion 20 is attached to the surface 3a of the inside corner IS of the cross member 3 and has a second axis AX2 along the axial direction (X direction) of the cross member 3, and a space SP is left at the inside corner IS to which the brace fixing bracket 1 is attached. The brace 4 is attached between an inside corner IS and an inside corner opposite the inside corner IS, and reinforces the framework consisting of the columns 2 and cross members 3 etc. to form a load-bearing structural surface of a load-bearing wall, etc., and the shuttlecock 4a of the brace 4 is attached to the connecting surface 30 of the brace fixing bracket 1 by bolts 4b and nuts (not shown).

[0025] [Brace fixing bracket 1 configuration] Figure 2 is an oblique view of the brace fixing bracket 1, Figure 3 is a left side view of the brace fixing bracket 1, Figure 4 is a plan view of the brace fixing bracket 1, Figure 5 is a front view of the brace fixing bracket 1, Figure 6 is a rear view of the brace fixing bracket 1, Figure 7 is an AA cross-sectional view of Figure 4, Figure 8(a) is an enlarged BB cross-sectional view of Figure 5, Figure 8(b) is an enlarged CC cross-sectional view of Figure 5, Figure 8(c) is a DD cross-sectional view of Figure 5, and Figure 8(d) is an EE cross-sectional view of Figure 5. In the figure, 11 is a first flat plate, 11a is an upper end portion, 11b is a lower end portion, 12 is an upper screw hole group, 12h is a first screw hole, 13 is a lower screw hole group, 13h is a first screw hole, 14 is a first bolt hole, 15a to 15d are a first recess, 21 is a second flat plate, 21a is a left end portion, 21b is a right end portion, 22 is a left side screw hole group, 22h is a second screw hole, 23 is a right side screw hole group, 23h is a second screw hole, 24 is a second bolt hole, 25a to 25d are a second recess, 31 is a flat plate portion, 32 is an outer L-shaped portion, 32a is an outer end portion, 33 is an inner L-shaped portion, 33a is an inner end portion, 34 is a brace bolt hole, 35a to 35f are a third recess, and 36a, 36b, 37a, and 37b are notches. 5 and 6, the dotted region 30R is the region extending from the outer end 32a toward the inner end 33a. As described above, the brace fixing bracket 1 consists of a first mounting surface portion 10, a second mounting surface portion 20, and a connecting surface portion 30 that connects the first mounting surface portion 10 and the second mounting surface portion 20, and the first mounting surface portion 10 and the second mounting surface portion 20 stand at a right angle or an angle close to a right angle to the connecting surface portion 30.

[0026] The first mounting surface portion 10 is formed by providing an upper screw hole group 12, a lower screw hole group 13, and a first bolt hole 14 in a first flat plate 11 having an upper end 11a and a lower end 11b. In the first mounting surface portion 10, when the brace fixing bracket 1 is attached to the inside corner IS between the column 2 and the cross member 3, in the direction of the first axis AX1, the lower end portion 11b located on the inside corner IS side becomes the first inside corner side end portion of the present invention, and the upper end portion 11a opposite the lower end portion 11b (first inside corner side end portion) becomes the first non-inside corner side end portion of the present invention. The upper screw hole group 12 consists of a plurality of first screw holes 12h concentrated in the region adjacent to the upper end portion 11a, the lower screw hole group 13 consists of a plurality of first screw holes 13h concentrated in the region adjacent to the lower end portion 11b, and the first bolt hole 14 is provided in the region adjacent to the lower end portion 11b, with the first screw holes 12h, 13h being the first linear member holes of the present invention and the first bolt hole 14 being the first rod-shaped member hole of the present invention. The number of first screw holes 13h forming lower screw hole group 13 is greater than the number of first screw holes 12h forming upper screw hole group 12. In this case, the region near the upper end 11a refers to the region located downward in the Z direction from the upper end 11a, which is about 1 / 10 to 2 / 5, preferably 1 / 4 to 1 / 3, of the length of the first flat plate 11 in the Z direction (vertical direction), and the region near the lower end 11b refers to the region located upward in the Z direction from the lower end 11b, which is about 1 / 10 to 2 / 5, preferably 1 / 4 to 1 / 3, of the length of the first flat plate 11 in the Z direction (vertical direction). Further, in a portion (boundary portion) that straddles the first attachment surface portion 10 and the connecting surface portion 30 and forms a right angle or an angle close to a right angle, first recesses 15a to 15d are provided. As shown in FIG. 8(a), the first recesses 15a to 15d are formed by pushing the parts with right angles or angles close to right angles inward to bulge them.

[0027] The second mounting surface portion 20 has the same structure as the first mounting surface portion 10 . That is, the second mounting surface portion 20 is formed by providing a left side screw hole group 22, a right side screw hole group 23, and a second bolt hole 24 in a second flat plate 21 having a left end 21a and a right end 21b. In the second mounting surface portion 20, when the brace fixing bracket 1 is attached to the inside corner IS between the column 2 and the cross member 3, in the direction of the second axis AX2, the right end portion 21b located on the inside corner IS side becomes the second inside corner side end portion of the present invention, and the left end portion 21a opposite the right end portion 21b (second inside corner side end portion) becomes the second non-inside corner side end portion of the present invention. The left side screw hole group 22 consists of a plurality of second screw holes 22h concentrated in the region adjacent to the left end portion 21a, the right side screw hole group 23 consists of a plurality of second screw holes 23h concentrated in the region adjacent to the right end portion 21b, and the second bolt hole 24 is provided in the region adjacent to the right end portion 21b, with the second screw holes 22h, 23h being the second linear member holes of the present invention and the second bolt hole 24 being the second rod-shaped member hole of the present invention. The number of second screw holes 23h that form right screw hole group 23 is greater than the number of second screw holes 22h that form left screw hole group 22. In this case, the region near the left end 21a refers to a region located to the right in the X direction from the left end 21a, which is about 1 / 10 to 2 / 5, preferably 1 / 4 to 1 / 3 of the length of the second flat plate 21 in the X direction (left and right direction), and the region near the right end 21b refers to a region located to the left in the X direction from the right end 21b, which is about 1 / 10 to 2 / 5, preferably 1 / 4 to 1 / 3 of the length of the second flat plate 21 in the X direction (left and right direction). Further, in a portion (boundary portion) that straddles the second attachment surface portion 20 and the connection surface portion 30 and forms a right angle or an angle close to a right angle, second recesses 25a to 25d are provided. As shown in FIG. 8(b), the second recesses 25a to 25d are formed by pushing the parts with right angles or angles close to right angles inward to bulge them.

[0028] The connecting surface portion 30 consists of a flat plate portion 31, an outer L-shaped portion 32 and an inner L-shaped portion 33 (see Figure 8 (c)), and its outer shape when viewed from the front is approximately an isosceles trapezoid, with the curved portion of the outer L-shaped portion 32 being the outer end portion 32a and the curved portion of the inner L-shaped portion 33 being the inner end portion 33a. In this case, in the region 30R from the outer end 32a toward the inner end 33a of the connecting surface portion 30, the cross-sectional area in the thickness direction (Y direction) per predetermined length in the direction from the outer end 32a toward the inner end 33a, i.e., in the direction perpendicular to the outer end 32a and the inner end 33a, is at least twice as large in the outer L-shaped portion 32 near the outer end 32a as that of the portion excluding the outer L-shaped portion 32. The predetermined length refers to the length Lz in the direction from the outer end 32a of the outer L-shaped portion 32 toward the inner end 33a, and Lz is equal to or less than half the length Ly of the outer L-shaped portion 32 in the Y direction (see FIG. 8(c)). In addition, in the flat plate portion 31, a brace bolt hole 34 is provided at a position from the center toward the outer end portion 32a, notches 36a, 36b are provided on both sides of the outer end portion 32a, and notches 37a, 37b are provided on both sides of the inner end portion 33a. Furthermore, the outer end portion 32a is provided with third recesses 35a to 35f along its longitudinal direction. As shown in Figs. 7 and 8(d), the third recesses 35a to 35f are formed by pressing the bent portion of the outer L-shaped portion 32 inward.

[0029] [Assembly of brace fixing bracket 1] FIG. 9 is an exploded view of the brace fixing bracket 1, in which 40 is a metal plate, 41 is a first surface, 42 is a second surface, 43 is a third surface, 43p is an outer bent surface, 43q is an inner bent surface, and f1 to f4, represented by dashed double-dashed lines, are bend curves. The assembly process of the brace fixing bracket 1 will be described below. The metal plate 40 used to assemble and process the brace fixing bracket 1 consists of a first surface 41, a second surface 42 and a third surface 43, the first surface 41 and the third surface 43 being separated by a fold line f1, and the second surface 42 and the third surface 43 being separated by a fold line f2. The first surface portion 41 is a portion that becomes the first mounting surface portion 10, and has an upper screw hole group 12, a lower screw hole group 13, and a first bolt hole 14 provided therein. The second surface portion 42 is a portion that becomes the second mounting surface portion 20, and is provided with a left side screw hole group 22, a right side screw hole group 23, and a second bolt hole 24. The third surface portion 43 is the portion that becomes the connecting surface portion 30, and has a brace bolt hole 34 provided near the center, notches 36a and 37a provided near the bend line f1, and notches 36b and 37b provided near the bend line f2. In the third surface portion 43, the outer side of the fold line f3 is an outer fold surface portion 43p, and the outer side of the fold line f4 is an inner fold surface portion 43q.

[0030] The assembly process from the metal plate 40 to the brace fixing bracket 1 is carried out as follows. First, the first surface portion 41 is bent along the fold line f1 at a right angle or an angle close to a right angle to the third surface portion 43 to form the first mounting surface portion 10, and the second surface portion 42 is bent along the fold line f2 at a right angle or an angle close to a right angle to the third surface portion 43 to form the second mounting surface portion 20. Next, in the third surface portion 43, the outer folded surface portion 43p is folded into an L shape along the fold line f3 to form the outer L-shaped portion 32, and the inner folded surface portion 43q is folded into an L shape along the fold line f4 to form the inner L-shaped portion 33. At this time, since the third surface portion 43 has the notches 36a, 36b, the outer folded surface portion 43p can be easily folded along the fold line f3, and since the third surface portion 43 has the notches 37a, 37b, the inner folded surface portion 43q can be easily folded along the fold line f4. After this, multiple spot-like portions on the fold line f1 are pushed inward and expanded to form first depressions 15a-15d, multiple spot-like portions on the fold line f2 are pushed inward and expanded to form second depressions 25a-25d, and multiple spot-like portions on the fold line f3 are pushed inward and expanded to form third depressions 35a-35f. In this way, a brace fixing bracket 1 can be easily produced by bending a single metal plate 40 having bolt holes, screw holes, etc. along a specified bend curve and pressing into multiple spot-like portions.

[0031] [Installation of brace fixing bracket 1] FIG. 10 is an oblique view of a brace fixing bracket 1 placed in an inside corner formed by a column 2 and a cross member 3, in which 50 and 60 are bolts, 51 and 61 are nuts, and 52, 53, 62, and 63 are screws, with the bolts 50 and 60 being rod-shaped members of the present invention and the screws 52, 53, 62, and 63 being linear members of the present invention. The installation of the brace fixing bracket 1 will be described below with reference to FIG. First, the first mounting surface portion 10 is placed against the surface 2a of the pillar 2 on the inside corner side, and the second mounting surface portion 20 is placed against the surface 3a of the cross member 3 on the inside corner side. At this time, since the first flat plate 11 of the first mounting surface portion 10 and the second flat plate 21 of the second mounting surface portion 20 are perpendicular to each other, the first axis AX1 of the first mounting surface portion 10 faces the Z direction, and the second axis AX2 of the second mounting surface portion 20 faces the X direction. The column 2 has a through hole in the X direction pre-drilled, and the cross member 3 has a through hole in the Z direction pre-drilled. The brace fixing bracket 1 is positioned so that the first bolt hole 14 of the first mounting surface portion 10 matches the through hole of the column 2 and the second bolt hole 24 of the second mounting surface portion 20 matches the through hole of the cross member 3. Next, the bolt 50 is inserted through the first bolt hole 14 and the through hole of the pillar 2, and a nut 51 is screwed into the threaded portion at the tip side of the bolt 50, and the first flat plate 11 of the first mounting surface portion 10 is fixed to the pillar 2 with the bolt 50 and the nut 51. In addition, the bolt 60 is inserted through the second bolt hole 24 and the through hole of the cross member 3, and a nut 61 is screwed into the threaded portion at the tip side of the bolt 60, and the second flat plate 21 of the second mounting surface portion 20 is fixed to the cross member 3 with the bolt 60 and the nut 61.

[0032] Thereafter, in the first mounting surface portion 10, the screws 52 are screwed into the pillars 2 through the respective first screw holes 12h of the upper screw hole group 12, and the screws 53 are screwed into the pillars 2 through the respective first screw holes 13h of the lower screw hole group 13. In addition, at the second mounting surface portion 20, the screws 62 are screwed into the cross member 3 through each second screw hole 22h of the left side screw hole group 22, and the screws 63 are screwed into the cross member 3 through each second screw hole 23h of the right side screw hole group 23. At this time, first, the first mounting surface portion 10 is positioned and fixed to the pillar 2 with the bolt 50 and the nut 51, and then the second mounting surface portion 20 is positioned and fixed to the cross member 3 with the bolt 60 and the nut 61. As a result, the screws 52, 53 can be easily screwed into the pillar 2 through the first screw holes 12h, 13h, and the screws 62, 63 can be easily screwed into the cross member 3 through the second screw holes 22h, 23h, reducing the burden on the worker. In this way, the first mounting surface portion 10 is firmly fixed to the column 2 by the bolt 50, nut 51, and screws 52, 53, the second mounting surface portion 20 is firmly fixed to the cross member 3 by the bolt 60, nut 61, and screws 62, 63, and the brace fixing bracket 1 is attached to the inside corner IS formed by the column 2 and the cross member 3. For the brace fixing bracket 1 attached to the inside corner IS of the column 2 and the cross member 3, as shown in FIG. 1, the shuttlecock 4a of the brace 4 is placed against the flat plate portion 31 of the connecting surface portion 30, and a bolt 4b is inserted through the bolt hole (not shown) of the shuttlecock 4a and the brace bolt hole 34, and a nut (not shown) is screwed into the threaded portion of the bolt 4b to tighten it. This causes the brace 4 to be fixed to the connecting surface portion 30 of the brace fixing bracket 1. It should be noted that the linear members of the present invention are not limited to screws such as screws 52, 53, 62, and 63, but may be nails driven into wooden structural members, and the rod-shaped members of the present invention are not limited to bolts such as bolts 50 and 60, but may be pins.

[0033] [Function of the brace mounting structure] FIG. 11 is an explanatory diagram for explaining a first action of the brace mounting structure shown in FIG. 1, and in the drawing, M1 is a first moment, and M2 is a second moment. Hereinafter, a first action of the brace mounting structure shown in FIG. 1 will be described with reference to FIG. In the brace mounting structure of Figure 1, when a strong force acts due to an earthquake or strong wind, tending to deform the framework consisting of the columns 2 and cross members 3, etc., and a tensile force acts on the brace 4, a first moment M1 acts on the first mounting surface portion 10 of the brace fixing bracket 1, tending to rotate the first mounting surface portion 10 along the surface 2a of the column 2 around its center or near its center, and a second moment M2 acts on the second mounting surface portion 20 of the brace fixing bracket 1, tending to rotate the second mounting surface portion 20 along the surface 3a of the cross member 3 around its center or near its center. Furthermore, due to the first moment M1, the force acting from the first mounting surface portion 10 to the screws, etc., that secure the first mounting surface portion 10 to the pillar 2 becomes smaller in proportion to the distance from the center or near the center of the first mounting surface portion 10, and is smallest at the upper end portion 11a and the lower end portion 11b. In addition, due to the second moment M2, the force acting from the second mounting surface portion 20 to the screws, etc., that fix the second mounting surface portion 20 to the cross member 3 becomes smaller in proportion to the distance from the center or near the center of the second mounting surface portion 20, and is smallest at the left end portion 21a and the right end portion 21b. In this case, in the first mounting surface portion 10, a plurality of first screw holes 12h are concentrated in the area near the upper end portion 11a, and a plurality of first screw holes 13h are concentrated in the area near the lower end portion 11b, and the plurality of screws 52, 53 fixing the first mounting surface portion 10 to the column 2 are concentrated in the area near the upper end portion 11a and the area near the lower end portion 11b. Therefore, the force that the concentrated plurality of screws 52, 53 receive from the first mounting surface portion 10 attempting to rotate due to the first moment M1 is small, and the force that each screw 52, ​​53 receives is dispersed and further weakened by the plurality of screws 52, 53, thereby effectively preventing damage (plastic deformation) of the fixing portion of the first mounting surface portion 10 and the column 2 due to the screws 52, 53. Similarly, in the second mounting surface portion 20, a plurality of second screw holes 22h are concentrated in the area adjacent to the left end portion 21a, and a plurality of second screw holes 23h are concentrated in the area adjacent to the right end portion 21b, and the plurality of screws 62, 63 that fix the second mounting surface portion 20 to the cross member 3 are concentrated in the area adjacent to the left end portion 21a and the area adjacent to the right end portion 21b. Therefore, the force that the concentrated plurality of screws 62, 63 receive from the second mounting surface portion 20 attempting to rotate due to the second moment M2 is small, and the force that each screw 62, 63 receives is dispersed and further weakened by the plurality of screws 62, 63, thereby effectively preventing damage (plastic deformation) of the fixing portion between the second mounting surface portion 20 and the cross member 3 due to the screws 62, 63.

[0034] Next, a second function of the brace mounting structure shown in FIG. 1 will be described. In the brace mounting structure of Figure 1, when a strong force acts due to an earthquake or strong wind, tending to deform the framework consisting of the column 2, cross member 3, etc. and a tensile force acts on the brace 4, in addition to the first moment M1 and second moment M2 as described above, a peel-off force acts on the first mounting surface portion 10 and second mounting surface portion 20 of the brace fixing bracket 1, tending to peel the first mounting surface portion 10 from the column 2 and peel the second mounting surface portion 20 from the cross member 3. This peeling force becomes larger the closer to the joint between the column 2 and the cross member 3, and is greatest at the lower end 11b of the first mounting surface portion 10 and the right end 21b of the second mounting surface portion 20. In this case, a first bolt hole 14 is provided in the area near the lower end 11b of the first mounting surface portion 10, and the area near the lower end 11b of the first mounting surface portion 10 is fixed to the column 2 by a bolt 50 and a nut 51 that are inserted through this first bolt hole 14.Therefore, the bolt 50 and the nut 51, which have a stronger resistance to the pull-off force than the screw, resist the maximum pull-off force, and damage (plastic deformation) to the fixed portion between the first mounting surface portion 10 and the column 2 due to the pull-off force is effectively prevented. Similarly, a second bolt hole 24 is provided in the area near the right end 21b of the second mounting surface portion 20, and the area near the right end 21b of the second mounting surface portion 20 is fixed to the cross member 3 by a bolt 60 and a nut 61 that are inserted through this second bolt hole 24.The bolt 60 and the nut 61 therefore resist the maximum pull-out force, effectively preventing damage (plastic deformation) to the fixed portion between the second mounting surface portion 20 and the cross member 3.

[0035] Furthermore, in the first mounting surface portion 10, the number of first screw holes 13h that form the lower screw hole group 13 is greater than the number of first screw holes 12h that form the upper screw hole group 12, and the number of screws 53 inserted into the first screw holes 13h is greater than the number of screws 52 inserted into the first screw holes 12h. As a result, the resistance of the screws to the above-mentioned peel-off force is greater in the area near the lower end portion 11b than in other areas, further preventing damage (plastic deformation) of the fixed portion between the first mounting surface portion 10 and the column 2 due to the above-mentioned peel-off force. Similarly, in the second mounting surface portion 20, the number of second screw holes 23h that form the right side screw hole group 23 is greater than the number of second screw holes 22h that form the left side screw hole group 22, and the number of screws 63 inserted into the second screw holes 23h is greater than the number of screws 62 inserted into the second screw holes 22h. Therefore, the resistance of the screws to the above-mentioned peel-off force is greater in the area near the right end portion 21b than in other areas, further preventing damage (plastic deformation) of the fixed portion between the second mounting surface portion 20 and the cross member 3 due to the above-mentioned peel-off force. Furthermore, even if a strong force acts due to an earthquake or strong wind, tending to deform the frame consisting of the columns 2 and cross members 3, etc., a tensile force acts on the brace 4, and a shear force acts to shift the first mounting surface portion 10 and the second mounting surface portion 20 of the brace fixing bracket 1 from the column 2 and the cross member 3, because the first mounting surface portion 10 is fixed to the column 2 with a plurality of screws 52, 53, and the second mounting surface portion 20 is fixed to the cross member 3 with a plurality of screws 62, 63, initial deformation of the column 2, the cross member 3, etc. is unlikely to occur.

[0036] In addition, the brace mounting structure in FIG. 1 has the following effects. In the brace mounting structure of Figure 1, when a strong force such as an earthquake or strong wind acts on the frame consisting of the columns 2 and cross members 3, etc., attempting to deform the frame, a tensile force is applied to the brace 4, and the brace fixing bracket 1 is subjected to a tensile force at its joint with the brace 4, deforming the brace fixing bracket 1 and creating a force that attempts to pull the brace fixing bracket 1 away from the columns 2 and cross members 3. In the brace fixing bracket 1, particularly near the outer end 32a of the connecting surface portion 30, a large combined force including bending in the X-, Y-, and Z-directions, tension, shear, torsion, and the like is applied. In this case, an outer L-shaped portion 32 is formed near the outer end 32a of the connecting surface portion 30, and in the region 30R, the cross-sectional area in the thickness direction (Y direction) per specified length in the direction from the outer end 32a toward the inner end 33a is more than twice as large as the portion excluding the outer L-shaped portion 32 in the outer L-shaped portion 32 near the outer end 32a, so that it exhibits strong resistance to large combined forces of bending, tension, shear, torsion, etc. acting near the outer end 32a, and yielding near the outer end 32a is prevented. Additionally, third recesses 35a-35f are provided along the longitudinal direction of outer end 32a, and third recesses 35a-35f exhibit stronger resistance to the combined large force, further preventing yielding in the vicinity of outer end 32a. Furthermore, the connecting surface portion 30 has an inner L-shaped portion 33, which prevents the inner end portion 33a of the connecting surface portion 30 from yielding.

[0037] In addition, in the brace fixing bracket 1, large forces that combine bending, tension, shear, torsion, etc. act on the boundary portion between the first mounting surface portion 10 and the connecting surface portion 30 and the boundary portion between the second mounting surface portion 20 and the connecting surface portion 30. In this case, first recesses 15a-15d are provided in the portion (boundary portion) that forms a right angle or an angle close to a right angle between the first mounting surface portion 10 and the connecting surface portion 30, and second recesses 25a-25d are provided in the portion (boundary portion) that forms a right angle or an angle close to a right angle between the second mounting surface portion 20 and the connecting surface portion 30. These first recesses 15a-15d and second recesses 25a-25d provide stronger resistance to the combined large force, preventing yielding of the boundary portion between the first mounting surface portion 10 and the connecting surface portion 30 and the boundary portion between the second mounting surface portion 20 and the connecting surface portion 30. [Industrial Applicability]

[0038] The brace fixing bracket and brace of the present invention can prevent initial deformation at the joint between two structural members even if a tensile force acts on the brace as the joint between the two structural members attempts to deform and a shear force acts to shift each mounting surface portion from each structural member, and can prevent damage (plastic deformation) to the fixed portions of each mounting surface portion and each structural member even if a moment acts to rotate each mounting surface portion along the face of each structural member around its center or near its center, or a peeling force acts to peel each mounting surface portion off of each structural member, and can be used in buildings with wooden frame structures. [Explanation of symbols]

[0039] 1 Brace fixing bracket 2 Pillars 2a Inside corner face 3 Cross members 3a Inside corner face 4. Brace 4a Hagoita 4b Bolt 10 First mounting surface 11 1st plate 11a Upper end 11b Bottom end 12 Upper screw hole group 12h 1st screw hole 13 Lower screw holes 13h 1st screw hole 14 First bolt hole 15a~15d First recess 20 Second mounting surface 21 2nd plate 21a Left end 21b Right end 22 Left side screw holes 22h 2nd screw hole 23 Right screw hole group 23h Second screw hole 24 Second bolt hole 25a~25d Second recesses 30 Connecting surface part 30R Region 31 Flat plate part 32 Outer L-shaped part 32a Outer end 33 Inner L-shaped part 33a Inner end 34 Brace bolt hole 35a~35f Third recesses 36a, 36b, 37a, 37b Notches 40 Metal plate 41 First surface 42 Second surface 43 Third surface 43p Outer bent surface part 43q Inner bent surface part 50, 60 Bolts 51, 61 Nuts 52, 53, 62, 63 Screws AX1 First axis AX2 Second axis f1~f4 Bend lines IS Inside corner M1 First moment M2 Second moment SP Space

Claims

1. A brace fixing bracket attached to a first structural member and a second structural member assembled to the first structural member, the brace fixing bracket being attached to the first structural member and the second structural member while leaving a space at an inside corner between the first structural member and the second structural member, The brace fixing bracket is a first mounting surface portion attached to a surface forming a front corner of the first structural member and having a first axis along an axial direction of the first structural member; a second mounting surface portion attached to a surface forming a front corner of the second structural member and having a second axis along an axial direction of the second structural member; A connecting surface portion is provided to connect the first mounting surface portion and the second mounting surface portion and to which a brace is attached, The connecting surface portion is made of a single metal plate, a portion spanning the first mounting surface portion and the connecting surface portion is continuous, and a portion spanning the second mounting surface portion and the connecting surface portion is continuous, The first mounting surface portion has a first inside corner side end portion located on the inside corner side in a direction of the first axis and a first non-inside corner side end portion facing the first inside corner side end portion, The first mounting surface portion is provided with a plurality of first linear member holes through which linear members to be screwed or driven into the first structural member are inserted, and the first linear member holes are concentrated in a region adjacent to the first inside corner side end portion and a region adjacent to the first non-inside corner side end portion, The second mounting surface portion has a second inside corner side end portion located on the inside corner side in the direction of the second axis and a second non-inside corner side end portion facing the second inside corner side end portion, The second mounting surface portion is provided with a plurality of second linear member holes through which linear members to be screwed or driven into the second structural member are inserted, and the second linear member holes are concentrated in a region adjacent to the second inside corner side end portion and a region adjacent to the second non-inside corner side end portion. A brace fixing bracket characterized by:

2. The brace fixing bracket according to claim 1, characterized in that a first rod-shaped member hole through which a rod-shaped member to be inserted into the first structural member is inserted is provided in a region adjacent to the first inside corner end, and a second rod-shaped member hole through which a rod-shaped member to be inserted into the second structural member is inserted is provided in a region adjacent to the second inside corner end.

3. 3. The brace fixing bracket according to claim 1, characterized in that the number of the first linear member holes provided in the region adjacent to the first inside corner end is greater than the number of the first linear member holes provided in the region adjacent to the first non-inside corner end, and the number of the second linear member holes provided in the region adjacent to the second inside corner end is greater than the number of the second linear member holes provided in the region adjacent to the second non-inside corner end.

4. The brace fixing bracket according to any one of claims 1 to 3, characterized in that the brace fixing bracket has a structure in which a single metal plate is bent, and the first mounting surface portion and the second mounting surface portion are formed by bending the connecting surface portion.

5. 5. The brace fixing hardware according to claim 4, wherein the connecting surface portion has a substantially isosceles trapezoidal shape.

6. A brace mounting structure in which a first structural member consisting of a column or a cross member and a second structural member assembled to the first structural member are attached to each other via a brace fixing metal fitting, leaving a space at an inside corner between the first structural member and the second structural member, The brace fixing bracket is a first mounting surface portion attached to a surface forming a front corner of the first structural member and having a first axis along an axial direction of the first structural member; a second mounting surface portion attached to a surface forming a front corner of the second structural member and having a second axis along an axial direction of the second structural member; A connecting surface portion is provided to connect the first mounting surface portion and the second mounting surface portion and to which a brace is attached, The connecting surface portion is made of a single metal plate, a portion spanning the first mounting surface portion and the connecting surface portion is continuous, and a portion spanning the second mounting surface portion and the connecting surface portion is continuous, The first mounting surface portion has a first inside corner side end portion located on the inside corner side in a direction of the first axis and a first non-inside corner side end portion facing the first inside corner side end portion, The first mounting surface portion is provided with a plurality of first linear member holes through which linear members to be screwed or driven into the first structural member are inserted, and the first linear member holes are concentrated in a region adjacent to the first inside corner side end portion and a region adjacent to the first non-inside corner side end portion, The second mounting surface portion has a second inside corner side end portion located on the inside corner side in the direction of the second axis and a second non-inside corner side end portion facing the second inside corner side end portion, The second mounting surface portion is provided with a plurality of second linear member holes through which linear members to be screwed or driven into the second structural member are inserted, and the second linear member holes are concentrated in a region adjacent to the second inside corner side end portion and a region adjacent to the second non-inside corner side end portion. A brace mounting structure comprising:

7. 7. The brace mounting structure according to claim 6, characterized in that a first rod-shaped member hole through which a rod-shaped member to be inserted into the first structural member is inserted is provided in a region adjacent to the first inside corner end, and a second rod-shaped member hole through which a rod-shaped member to be inserted into the second structural member is inserted is provided in a region adjacent to the second inside corner end.

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