Brace fixing bracket and brace mounting structure

Abstract

To provide a brace fixing metal fitting which can be easily made of one metal plate, which is attached to a brace or the like while leaving a space in an internal corner formed by a column or a horizontal member, and which prevents a connection face portion from yielding even when a large force from a brace etc. is applied thereto.SOLUTION: A brace fixing metal fitting 1 attached to a column 2 and a horizontal member 3 while leaving a space in an internal corner IS of the column 2 and the horizontal member 3, assembled to the column 2, comprises: a first attaching face portion 10 attached to the column 2; a second attaching face portion 20 attached to the horizontal member 3; and a connection face portion 30 which connects the first attaching face portion 10 and the second attaching face portion 20 and to which a brace is attached. The connection face portion 30 includes the inside end positioned at the internal corner IS side and an outside end facing the inside end. The outside end is formed by bending a flat plate constituting the connection face portion 30. A cross section of the connection face portion 30 in a thickness direction in the vicinity of the outside end is twice or more a thickness of a part excluding the vicinity of the outside 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, when the framework formed by the columns and cross members etc. is about to deform due to an earthquake, strong winds, etc., a large force (tensile force) acts on the braces etc., so the brace fixing hardware needs to be strong enough to withstand the large tensile force acting on the braces etc. Furthermore, like other metal fittings, brace fixing hardware needs to be easy to manufacture at low cost. For this reason, various proposals have been made regarding the mounting structure of braces and brace fixing metal fittings, aiming to improve the strength and the workability of the brace fixing metal fittings by creating structures and shapes that leave space in the corners of the framework.

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

[0051] to

[0059] and figures 10 to 12 of the cited document 1). In the earthquake-resistant reinforcement device 41 of Patent Document 1, a space remains at the corner of the beam 2 and the column 3, and the first mounting portion 42 and the second mounting portion 43 are formed integrally with a connecting portion 44 in between, thereby improving strength. However, when manufacturing the device by processing a single metal plate, although 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 must be connected by welding or the like, which has the disadvantage of poor workability.

[0004] In this regard, Patent Document 2 (Utility Model Registration No. 3035333) discloses a reinforcing metal fitting for wooden buildings which has a right-angled triangular metal base plate integral with one side edge of horizontal and vertical engagement surfaces which are perpendicular to each other, a notch is provided in advance on the inside of the intersection of two orthogonal sides of the metal base plate, and the two orthogonal sides are simultaneously bent 90° to the base plate, and the inside part of the intersection where the notch is located is bent in the same direction as the two orthogonal sides so that they are connected via an arc-shaped corner, so that the horizontal and vertical engagement surfaces which are bent 90° to the base plate are integrally and continuously bent via the arc-shaped corner, and the metal base plate is provided with a groove-shaped reinforcing rib which is oriented parallel to the hypotenuse of the base plate. However, in Patent Document 2, in order to simultaneously bend the two perpendicular sides of a right-angled triangular metal substrate 90° to the substrate to form a horizontal engagement surface, a vertical engagement surface, and an arc-shaped corner, the upper side (the side facing the cutout) and the lower side (the side facing the substrate) at the arc-shaped corner must be the same length.However, in the metal substrate before bending, even if a cutout is provided, the upper side will always be longer than the lower side.When the two perpendicular sides of the metal substrate are simultaneously bent 90° to the substrate, wrinkles will appear in the arc-shaped corner connecting the horizontal engagement surface and the vertical engagement surface, resulting in a problem that bending the metal substrate is extremely difficult. Furthermore, the reinforcing metal fittings for wooden buildings in Patent Document 2 have groove-shaped reinforcing ribs that are parallel to the oblique side of the base plate. However, these reinforcing ribs are simply created by indenting the base plate to create a groove shape, and while they provide some increase in resistance to bending in the thickness direction of the base plate, they provide almost no increase in resistance to tension in the direction of the slope of the base plate. For this reason, when the reinforcing metal fittings for wooden buildings described in Patent Document 2 are used as connecting metal fittings for braces, etc., a large tensile force acts on the braces, etc. due to deformation of the frame (a rectangle formed by columns and cross members) to which the braces, etc. are attached. If a large force (bending in the thickness direction, tension in the slope direction, etc.) acts on the metal base plate from the braces, etc., there is a problem that the metal base plate is likely to yield from the slope side.

[0005] Next, Patent Document 3 (JP 2012-77484 A) discloses a first reinforcing hardware 53 having a first mounting portion 54 which is attached to the vertical side surface 50a of a vertical wooden structural material 50 and the horizontal plane 51a of a horizontal wooden structural material 51, respectively, and a flat surface portion 55 which is positioned between the first mounting portions 54 and between the vertical side surface 50a and the horizontal plane 51a of the vertical and horizontal wooden structural materials 50, 51, and which has screw holes 59 provided in the flat surface portion 55 so that a brace 58 can be fixed. Furthermore, Patent Document 4 (Design Registration No. 1511570) discloses 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 connecting these mounting surface portions, with a hole provided in the center of the connecting surface portion to allow a diagonal brace to be attached. The first reinforcing hardware / architectural hardware of Patent Documents 3 and 4 has spaces at the inside corners of the wooden structural members 50, 51, etc., and can be easily fabricated by bending a single piece of metal plate, making it easy to work with. However, the flat surface portion 55 / connecting surface portion to which the brace etc. is attached is made of a flat plate, and when a large force (bending in the thickness direction, tension in the slope direction, etc.) acts on the flat surface portion 55 / connecting surface portion from the brace etc., the flat surface portion 55 / connecting surface portion is likely to yield. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2005-16102 A [Patent Document 2] Utility Model Registration No. 3035333 [Patent Document 3] JP 2012-77484 A [Patent Document 4] Design Registration No. 1511570 Summary of the Invention [Problem to be solved by the invention]

[0007] The problem that this invention seeks to solve is to provide a brace fixing bracket for wooden frame buildings, which has a mounting surface that is attached to a pillar or cross member and a connecting surface that is connected to the mounting surface to which a brace or the like can be attached, and which has a structure that can be easily manufactured from a single metal plate, and which leaves space in the internal corners formed by the pillars or cross members so that the brace or the like can be attached, and which is unlikely to yield even if a large force is applied to the brace fixing bracket from the brace or the like. [Means for solving the problem]

[0008] The invention of claim 1 is 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 of the first structural member and the second structural member, the brace fixing bracket having a first mounting surface portion that is attached to the first structural member, a second mounting surface portion that is attached to 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 first mounting surface portion and the second mounting surface portion stand at a right angle or an angle close to a right angle on the same side of the connecting surface portion, The connecting surface portion has an inner end portion located on the inside corner side and an outer end portion opposite the inner end portion, and the outer end portion is connected to a flat plate constituting the connecting surface portion. The first mounting surface portion and the second mounting surface portion are bent in a direction opposite to the side where they stand. The above-mentioned problem is solved by providing a brace fixing bracket which is formed by bending, and as a result of the bending, the cross-sectional area in the thickness direction per specified length along the direction from the outer end to the inner end in the region from the outer end to the inner end of the connecting surface portion is more than twice as large near the outer end as in the portion excluding the vicinity of the outer end.

[0009] The invention of claim 2 solves the above-mentioned problem by providing a brace fixing bracket having a structure in which the bending process is performed on a single metal plate.

[0010] The invention of claim 3 solves the above-mentioned problem by providing a brace fixing bracket wherein the first mounting surface portion and the second mounting surface portion are configured by being bent from the connecting surface portion, and the first mounting surface portion and the second mounting surface portion are attached to the surfaces of the first structural member and the second structural member which form the space of the recessed corner.

[0011] The invention of claim 4 solves the above-mentioned problem by providing a brace fixing bracket in which the connecting surface portion has a substantially isosceles trapezoidal shape.

[0012] The invention of claim 5 is as follows: A brace fixing bracket is attached to a first structural member consisting of a column 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 assembled to the first structural member, the brace fixing bracket comprises a first mounting surface portion attached to the first structural member, a second mounting surface portion attached to the second structural member, and a connecting surface portion connecting the first mounting surface portion and the second mounting surface portion and to which a brace is attached, the connecting surface portion has an inner end portion located on the inside corner side and an outer end portion facing the inner end portion, the outer end portion is formed by bending a flat plate constituting the connecting surface portion, and the bending process causes a cross-sectional area in the thickness direction per predetermined length along a direction from the outer end portion to the inner end portion in a region from the outer end portion to the inner end portion of the connecting surface portion to be at least twice as large in the vicinity of the outer end portion as a portion excluding the vicinity of the outer end portion, and the first mounting surface portion and the second mounting surface portion are configured by being bent from the connecting surface portion, The above problem is solved by providing a brace fixing bracket with multiple recesses in the portion where the first mounting surface portion and the second mounting surface portion are bent from the connecting surface portion.

[0013] The invention of claim 6 is as follows: A brace fixing bracket is attached to a first structural member consisting of a column 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 assembled to the first structural member, the brace fixing bracket comprising a first mounting surface portion attached to the first structural member, a second mounting surface portion attached to the second structural member, and a connecting surface portion connecting the first mounting surface portion and the second mounting surface portion and to which a brace is attached, the connecting surface portion having an inner end portion located on the inside corner side and an outer end portion facing the inner end portion, the outer end portion being formed by bending a flat plate constituting the connecting surface portion, and the bending process makes the cross-sectional area in the thickness direction per predetermined length along the direction from the outer end portion to the inner end portion in a region from the outer end portion to the inner end portion of the connecting surface portion at least twice as large in the vicinity of the outer end portion as a portion excluding the vicinity of the outer end portion, The above problem is solved by providing a brace fixing bracket in which the first mounting surface portion, the second mounting surface portion, and the connecting surface portion excluding the bent portion form flat surfaces, and the first mounting surface portion and the second mounting surface portion are attached to surfaces of the first structural member and the second structural member that do not form the inside corner.

[0014] The invention of claim 7 solves the above-mentioned problem by providing a brace fixing bracket, in which the bending process is a process of bending the flat plate into an L-shape or a U-shape.

[0015] The invention of claim 8 is as follows: A brace fixing bracket is attached to a first structural member consisting of a column 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 assembled to the first structural member, the brace fixing bracket comprising a first mounting surface portion attached to the first structural member, a second mounting surface portion attached to the second structural member, and a connecting surface portion connecting the first mounting surface portion and the second mounting surface portion and to which a brace is attached, the connecting surface portion having an inner end portion located on the inside corner side and an outer end portion facing the inner end portion, the outer end portion being formed by bending a flat plate constituting the connecting surface portion, and the bending process makes the cross-sectional area in the thickness direction per predetermined length along the direction from the outer end portion to the inner end portion in a region from the outer end portion to the inner end portion of the connecting surface portion at least twice as large in the vicinity of the outer end portion as a portion excluding the vicinity of the outer end portion, The above problem is solved by providing a brace fixing bracket having a plurality of recesses in the bent portion.

[0016] The invention of claim 9 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 of the first structural member and a second structural member assembled to the first structural member, the brace fixing bracket having a first mounting surface portion that is attached to the first structural member, a second mounting surface portion that is attached to 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 first mounting surface portion and the second mounting surface portion stand at a right angle or an angle close to a right angle on the same side of the connecting surface portion, The connecting surface portion has an inner end portion located on the inside corner side and an outer end portion opposite the inner end portion, and the outer end portion is connected to a flat plate constituting the connecting surface portion. The first mounting surface portion and the second mounting surface portion are bent in a direction opposite to the side where they stand. The above-mentioned problem is solved by providing a brace mounting structure which is formed by bending, and by the bending, the cross-sectional area in the thickness direction per specified length along the direction from the outer end to the inner end in the region from the outer end to the inner end of the connecting surface portion near the outer end is more than twice as large as that of the portion excluding the vicinity of the outer end. Effect of the Invention

[0017] The brace fixing bracket of the invention described in claim 1 has the effect that even if a large force acts on the brace fixing bracket from a brace or the like, the connecting surface portion is less likely to yield.

[0018] The brace fixing bracket of the invention recited in claim 2 has a further effect of being easily manufactured from a single metal plate.

[0019] The brace fixing bracket according to the invention recited in claim 3 has a further advantage in that the first mounting surface portion and the second mounting surface portion can be easily produced.

[0020] The brace fixing metal fitting of the invention recited in claim 4 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] The brace fixing bracket of the invention recited in claim 5 has a further effect of preventing yielding of the boundary portion between the first mounting surface portion and the connecting surface portion and the boundary portion between the second mounting surface portion and the connecting surface portion.

[0022] The brace fixing bracket of the invention described in claim 6 further has the advantage that the first mounting surface portion and the second mounting surface portion can be easily attached to surfaces of the first structural member and the second structural member that do not form an internal corner.

[0023] The brace fixing hardware of the invention recited in claim 7 has a further effect that bending of the outer end of the connecting surface portion can be easily carried out.

[0024] The brace fixing hardware of the invention recited in claim 8 has the effect of further preventing yielding in the vicinity of the outer end of the connecting surface portion.

[0025] The brace mounting structure of the invention as recited in claim 9 has the advantage that even if a large force acts on the brace fixing metal fittings from the brace or the like, the connecting surface portion is less likely to yield. [Brief description of the drawings]

[0026] [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] FIG. 11 is a perspective view of another example 1 of a brace fixing bracket. [Figure 12] 12A and 12B are a left side view and a plan view of the brace fixing bracket shown in FIG. 11. [Figure 13] 12A and 12B are front and rear views of the brace fixing bracket shown in FIG. 11. [Figure 14] 12, and GG and HH sectional views of FIG. 13. [Figure 15] FIG. 11 is a perspective view of another example 2 of a brace fixing fitting. [Figure 16] 16 is a plan view, a front view, and a right side view of the brace fixing bracket shown in FIG. 15. [Figure 17] 17 is a cross-sectional view taken along line II and line JJ in FIG. 16. [Figure 18] 1 is a perspective view of a brace fixing bracket 100 attached to an inside corner formed by a column 2 and a cross member 3. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] [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 a connecting surface, 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 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 on the inside corner IS side of the column 2, and the second mounting surface portion 20 is attached to the surface 3a on the inside corner IS side of the cross member 3, and a space SP is left at the inside corner IS where 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).

[0028] [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.

[0029] 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. The upper screw hole group 12 consists of a plurality of first screw holes 12h provided in the area adjacent to the upper end portion 11a, and the lower screw hole group 13 consists of a plurality of first screw holes 13h provided in the area adjacent to the lower end portion 11b, and the first bolt hole 14 is provided in the area adjacent to the lower end portion 11b. In this case, the region near the upper end 11a refers to the region that is located downward from the upper end 11a and 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 that is upward from the lower end 11b and 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.

[0030] 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. The left side screw hole group 22 consists of a plurality of second screw holes 22h provided in the area adjacent to the left end portion 21a, and the right side screw hole group 23 consists of a plurality of second screw holes 23h provided in the area adjacent to the right end portion 21b, and the second bolt hole 24 is provided in the area adjacent to the right end portion 21b. In this case, the region near the left end 21a refers to the region located to the right of the left end 21a by 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-right direction), and the region near the right end 21b refers to the region located to the left of the right end 21b by 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-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.

[0031] 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 bent portion of the outer L-shaped portion 32 being the outer end portion 32a and the bent portion of the inner L-shaped portion 33 being the inner end portion 33a. In this case, in a region 30R extending 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 a 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 adjacent to the outer end 32a as that of the portion excluding the outer L-shaped portion 32. The predetermined length refers to the length Lz of the outer L-shaped portion 32 in the direction from the outer end 32a 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.

[0032] [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 outside of the fold line f3 is an outer fold surface portion 43p, and the outside of the fold line f4 is an inner fold surface portion 43q.

[0033] 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.

[0034] [Installation of brace fixing bracket 1] FIG. 10 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, in which reference numerals 50 and 60 denote bolts, 51 and 61 denote nuts, and 52, 53, 62, and 63 denote screws. 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 3b of the cross member 3 on the inside corner side. 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.

[0035] 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.

[0036] [Function of the brace mounting structure] The function of the brace mounting structure (Fig. 1) in which a brace 4 is attached to an inside corner IS between a column 2 and a cross member 3 via a brace fixing bracket 1 will be explained. 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] Next, 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.

[0038] [Another example of brace fixing brackets 1] Figure 11 is an oblique view of another example 1 of the brace fixing bracket, Figure 12(a) is a left side view of the brace fixing bracket shown in Figure 11, Figure 12(b) is a plan view of the brace fixing bracket shown in Figure 11, Figure 13(a) is a front view of the brace fixing bracket shown in Figure 11, Figure 13(b) is a rear view of the brace fixing bracket shown in Figure 11, Figure 14(a) is an FF cross-sectional view of Figure 12, Figure 14(b) is a GG cross-sectional view of Figure 13(a), and Figure 14(c) is an HH cross-sectional view of Figure 13(a). In the figure, 1' is a brace fixing bracket, 30' is a connecting surface portion, 31' is a flat plate portion, 32' is an outer U-shaped portion, 32a' is an outer end portion, 33' is an inner U-shaped portion, 33a' is an inner end portion, 34' is a brace bolt hole, 35a' to 35f' are third recesses, and 36a', 36b', 37a', and 37b' are notches, and the same symbols are used to refer to the same parts as the brace fixing bracket 1 shown in Figures 2 to 6. The brace fixing bracket 1 ′ has a first mounting surface portion 10 and a second mounting surface portion 20 connected by a connecting surface portion 30 ′ instead of the connecting surface portion 30 of the brace fixing bracket 1 . The connecting surface portion 30' is obtained by changing the outer L-shaped portion 32 and the inner L-shaped portion 33 of the connecting surface portion 30 into an outer U-shaped portion 32' and an inner U-shaped portion 33'. In this case, the outer U-shaped portion 32' is formed by bending the outer folded surface portion 43p into a U-shape along the fold line f3 on the third surface portion of the metal plate 40 shown in Figure 9, and the inner U-shaped portion 33' is formed by bending the inner folded surface portion 43q into a U-shape along the fold line f4.

[0039] The connecting surface portion 30' consists of a flat portion 31', an outer U-shaped portion 32' and an inner U-shaped portion 33' (see Figure 14 (b)), and its outer shape when viewed from the front is approximately an isosceles trapezoid, with the curved portion of the outer U-shaped portion 32' being the outer end portion 32a' and the curved portion of the inner U-shaped portion 33' being the inner end portion 33a'. In this case, in a 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 as that of the portion excluding the outer U-shaped portion 32' in the outer U-shaped portion 32' near the outer end 32a'. The predetermined length refers to the length Lu in the direction from the outer end 32a of the outer U-shaped portion 32' toward the inner end 33a', or a length less than Lu and greater than or equal to the length Lw of the curved portion of the outer U-shaped portion 32' (see FIG. 14(b)). In addition, in the flat plate portion 31', similar to the connecting surface portion 30 of the brace fixing bracket 1, 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 the longitudinal direction thereof. As shown in FIGS. 14(a) and 14(c), the third recesses 35a' to 35f' are formed by pressing the curved portion of the outer U-shaped portion 32' inward. The brace fixing bracket 1' is attached to the inside corner formed by the column 2 and the cross member 3 in the same manner as the brace fixing bracket 1.

[0040] [Function of the brace mounting structure using the brace fixing bracket 1'] In a brace mounting structure using a brace fixing bracket 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 from the brace 4 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', similarly to the brace fixing bracket 1, a large combined force of bending, tension, shear, torsion, etc. in the X, Y, and Z directions acts on the vicinity of the outer end 32a' of the connecting surface portion 30'. In this case, an outer U-shaped portion 32' is formed near the outer end 32a' of the connecting surface portion 30', and in region 30R', the cross-sectional area in the thickness direction (Y direction) per specified length from the outer end 32a' toward the inner end 33a' is more than twice as large as the portion excluding the outer U-shaped portion 32' in the outer U-shaped portion 32' near the outer end 32a'. Therefore, 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 the third recesses 35a'-35f' provide stronger resistance to the combined large force, thereby further preventing yielding in the vicinity of outer end 32a'. Furthermore, the connecting surface 30' has an inner U-shaped portion 33' which prevents the inner end 33a' of the connecting surface 30' from yielding.

[0041] [Another example of brace fixing brackets 2] Figure 15 is an oblique view of another example of a brace fixing bracket, Figure 16(a) is a plan view of the brace fixing bracket shown in Figure 15, Figure 16(b) is a front view of the brace fixing bracket shown in Figure 15, Figure 16(c) is a right side view of the brace fixing bracket shown in Figure 15, Figure 17(a) is a II cross-sectional view of Figure 16(a), and Figure 17(b) is a JJ cross-sectional view of Figure 16(b). In the figure, reference numeral 100 denotes a brace fixing bracket, 101 denotes a flat surface portion, 101a and 101b are notches, 102 denotes a curved surface portion, 110 denotes a first mounting surface portion, 112 denotes a first screw hole group, 112h denotes a first screw hole, 113 denotes a cutout hole, 120 denotes a second mounting surface portion, 122 denotes a second screw hole group, 122h denotes a second screw hole, 123 denotes a cutout hole, 130 denotes a connecting surface portion, 130a denotes an outer end portion, 130b denotes an inner end portion, 131 denotes a flat plate portion, 132 denotes an L-shaped portion, and 134 denotes a brace bolt hole. 15 and 16(b), k1 and k2 indicated by dashed double-dashed lines are imaginary boundary lines, and in FIG. 16(b), 130R indicated by dots is the area extending from the outer end 130a toward the inner end 130b. The brace fastening bracket 100 is made up of a first mounting surface portion 110, a second mounting surface portion 120, and a connecting surface portion 130 that connects the first mounting surface portion 110 and the second mounting surface portion 120 together. On the other hand, since brace fixing bracket 100 has a folded surface portion 102 formed by bending a portion of a metal plate into an L shape, brace fixing bracket 100 consists of flat surface portion 101 and folded surface portion 102 excluding folded surface portion 102 from the above-mentioned metal plate. In the flat surface portion 101, the first mounting surface portion 110 and the connecting surface portion 130 are separated by an imaginary boundary line k1, and the second mounting surface portion 120 and the connecting surface portion 130 are separated by an imaginary boundary line k2. In addition, first mounting surface portion 110 is provided with a first screw hole group 112 consisting of a plurality of first screw holes 112h, and a cutout hole 113 is provided at the boundary between first mounting surface portion 110 and connecting surface portion . Similarly, second mounting surface portion 120 is provided with a second screw hole group 122 consisting of a plurality of second screw holes 122h, and a cutout hole 123 is provided at the boundary between second mounting surface portion 120 and connecting surface portion .

[0042] The connecting surface portion 130 is made up of the bent surface portion 102 and a flat plate portion 131 which is a part of the flat surface portion 101 (the portion of the flat surface portion 101 excluding the bent surface portion 102 and the first mounting surface portion 110 and the second mounting surface portion 120). In this case, the outer end of the folded surface portion 102 becomes the outer end 130a, the end of the flat surface portion 101 (excluding the first mounting surface portion 110 and the second mounting surface portion 120) facing the outer end 130a becomes the inner end 130b, an L-shaped portion 132 is formed near the folded surface portion 102 and the outer end 130a, and the portion of the flat surface portion 101 of the connecting surface portion 130 excluding the L-shaped portion 132 becomes the flat plate portion 131 (see Figure 13(b)). In a region 130R extending from the outer end 130a toward the inner end 130b of the connecting surface portion 130, the cross-sectional area in the thickness direction (Y direction) per predetermined length in the direction from the outer end 130a toward the inner end 130b, i.e., in a direction perpendicular to the outer end 130a and the inner end 130b, is at least twice as large as that of the flat plate portion 131 excluding the L-shaped portion 132 in the L-shaped portion 132 near the outer end 130a. The predetermined length refers to a length equal to or less than half the length of the bent surface portion 102 in the Y direction (see FIG. 17(b)). Furthermore, in the flat plate portion 131, a brace bolt hole 134 is provided at a position from the center toward the outer end portion 130a. In addition, in the brace fixing bracket of the present invention, the bending applied to the outer end of the connecting surface portion is not limited to bending to form the outer L-shaped portion 32 of the brace fixing bracket 1, the outer U-shaped portion 32' of the brace fixing bracket 1', or the L-shaped portion 132 of the brace fixing bracket 100, but may also be bending to form a U-shape or an L-shape.

[0043] [Installation of brace fixing bracket 100] FIG. 18 is a perspective view of a brace fixing bracket 100 attached to an inside corner formed by a column 2 and a cross member 3, in which 2b and 3b are surfaces that do not form the inside corner, 141 and 142 are screws, and SP' is a space. The same symbols are used for the same parts as in FIG. 1. The installation of the brace fixing bracket 100 will be described below with reference to FIG. First, the first mounting surface portion 110 of the brace fixing bracket 100 is placed against the surface 2b of the column 2 that does not form an inside corner, and the second mounting surface portion 120 is placed against the surface 3b of the cross member 3 that does not form an inside corner. In this case, a hole 113 is provided at the boundary between the first mounting surface portion 110 and the connecting surface portion 130, and by placing the brace fixing bracket 100 so that the side edge of surface 2b fits into the hole 113, the first mounting surface portion 110 can be easily placed against surface 2b. In addition, a hole 123 is provided at the boundary between the second mounting surface portion 120 and the connecting surface portion 130, and by positioning the brace fixing bracket 100 so that the upper edge of surface 3b fits into hole 123, the second mounting surface portion 120 can be easily positioned against surface 3b. Next, in the first mounting surface portion 110, the screws 141 are screwed into the pillars 2 through the first screw holes 112h of the first screw hole group 112. Furthermore, in the second mounting surface portion 120 , the screws 142 are screwed into the cross member 3 through the second screw holes 122 h of the second screw hole group 122 . In this way, the first mounting surface portion 110 is firmly fixed to the column 2 by the screw 141, the second mounting surface portion 120 is firmly fixed to the cross member 3 by the screw 142, and the brace fixing bracket 100 is attached to the inside corner IS formed by the column 2 and the cross member 3, leaving a space SP' in the inside corner IS. For the brace fixing bracket 100 attached to the inside corner IS of the column 2 and the cross member 3, the shuttlecock 4a of the brace 4 is placed against the flat plate portion 131 of the connecting surface portion 130, and the bolt 4b is inserted through the bolt hole (not shown) of the shuttlecock 4a and the brace bolt hole 134, and a nut (not shown) is screwed into the threaded portion of the bolt 4b to tighten it. As a result, the brace 4 is fixed to the connecting surface portion 130 of the brace fixing bracket 100.

[0044] [Function of the brace mounting structure using the brace fixing bracket 100] The operation of the brace mounting structure (FIG. 18) in which the brace 4 is mounted to the inside corner IS between the column 2 and the cross member 3 via the brace fixing bracket 100 will be described. 1, in the brace mounting structure of FIG. 18, a tensile force of the brace 4 acts on the joint between the brace fixing bracket 100 and the brace 4 due to an earthquake or strong wind, deforming the brace fixing bracket 100 and generating a force that tries to pull the brace fixing bracket 100 away from the column 2 and the cross member 3. In the brace fixing bracket 100, particularly near the outer end 130a of the connecting surface portion 130, a large combined force of bending in the X, Y and Z directions, tension, shear, torsion, etc. acts. In this case, an L-shaped portion 132 is formed near the outer end 130a of the connecting surface portion 130, and in region 130R, the cross-sectional area in the thickness direction (Y direction) per specified length in the direction from the outer end 130a toward the inner end 130b is more than twice as large as that of the flat portion 131 excluding the L-shaped portion 132 in the L-shaped portion 132 near the outer end 130a, so that it exhibits strong resistance to large combined forces of bending, tension, shear, torsion, etc. acting near the outer end 130a, and yielding near the outer end 130a is prevented. [Industrial Applicability]

[0045] The brace fixing bracket of the present invention can be easily manufactured from a single metal plate, and can be attached to a brace, etc., leaving space in the internal corner formed by a pillar or cross member. In the brace mounting structure of the present invention, even if a large force is applied to the brace fixing bracket from the brace, etc., the connecting surface is unlikely to yield, and the brace fixing bracket and brace mounting structure of the present invention can be used in buildings with wooden frame structures. [Explanation of symbols]

[0046] 1 Brace fixing bracket 1' Brace fixing bracket 2 Pillars 2a Inside corner face 2b, faces that do not form inside corners 3 Cross members 3a Inside corner face 3b Faces that do not form inside corners 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 Second flat plate 21a Left end portion 21b Right end portion 22 Left side screw hole group 22h Second screw hole 23 Right side screw hole group 23h Second screw hole 24 Second bolt hole 25a - 25d Second recess 30, 30’ Connecting surface 30R Region 31, 31’ Flat plate portion 32 Outer L - shaped portion 32’ Outer U - shaped portion 32a, 32a’ Outer end portion 33 Inner L - shaped portion 33’ Inner U - shaped portion 33a, 33a’ Inner end portion 34, 34’ Brace bolt hole 35a - 35f, 35a’ - 35f ’ Third recess 36a, 36b, 37a, 37b, 36a’, 36b’, 37a’, 37b’ Notch 40 Metal plate 41 First surface 42 Second surface 43 Third surface 43p Outer bent surface 43q Inner bent surface 50, 60 Bolt 51, 61 Nut 52, 53, 62, 63 Screw 100 Brace fixing fitting 101 Flat surface 101a, 101b Notch 102 Bent surface 110 First mounting surface 112 First screw hole group 112h First screw hole 113 Drilled hole 120 Second mounting surface 122 Second screw hole group 122h Second screw hole 123 Hole 130 Connecting surface section 130a outer end 130b Inner edge 130R area 131 Flat plate part 132 L-shaped part 134 Brace bolt hole 141, 142 bis f1~f4 folding line IS Inside Corner k1, k2 Virtual boundary SP, 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 that is attached to the first structural member; A second mounting surface portion that is attached to 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 first mounting surface portion and the second mounting surface portion stand at a right angle or an angle close to a right angle on the same side of the connecting surface portion, The connecting surface portion has an inner end portion located on the inside corner side and an outer end portion facing the inner end portion, the outer end portion is formed by bending a flat plate constituting the connecting surface portion in a direction opposite to a side on which the first mounting surface portion and the second mounting surface portion stand, A brace fixing bracket characterized in that, as a result of the bending process, the cross-sectional area in the thickness direction per specified length along the direction from the outer end to the inner end in the region from the outer end to the inner end of the connecting surface portion is more than twice as large near the outer end as in the portion excluding the vicinity of the outer end.

2. 2. The brace fixing bracket according to claim 1, wherein the brace fixing bracket has a structure in which the bending process is performed on a single metal plate.

3. The first mounting surface portion and the second mounting surface portion are configured by being bent from the connecting surface portion, 3. The brace fixing bracket according to claim 1 or 2, wherein the first mounting surface portion and the second mounting surface portion are attached to surfaces of the first structural member and the second structural member that form the space of the recessed corner.

4. 4. The brace fixing hardware according to claim 3, wherein the connecting surface portion has a substantially isosceles trapezoidal shape.

5. A brace fixing bracket 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 of the first structural member and a second structural member, The brace fixing bracket is A first mounting surface portion that is attached to the first structural member; A second mounting surface portion that is attached to 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 has an inner end portion located on the inside corner side and an outer end portion facing the inner end portion, The outer end portion is formed by bending a flat plate constituting the connecting surface portion, As a result of the bending process, a cross-sectional area in a thickness direction per a predetermined length along a direction from the outer end to the inner end in a region from the outer end to the inner end of the connecting surface portion is at least twice as large in the vicinity of the outer end as a portion excluding the vicinity of the outer end, The first mounting surface portion and the second mounting surface portion are configured by being bent from the connecting surface portion, A brace fixing bracket, characterized in that a plurality of recesses are provided in a portion where the first mounting surface portion and the second mounting surface portion are bent from the connecting surface portion.

6. A brace fixing bracket 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 of the first structural member and a second structural member, The brace fixing bracket is A first mounting surface portion that is attached to the first structural member; A second mounting surface portion that is attached to 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 has an inner end portion located on the inside corner side and an outer end portion facing the inner end portion, The outer end portion is formed by bending a flat plate constituting the connecting surface portion, As a result of the bending process, a cross-sectional area in a thickness direction per a predetermined length along a direction from the outer end to the inner end in a region from the outer end to the inner end of the connecting surface portion is at least twice as large in the vicinity of the outer end as a portion excluding the vicinity of the outer end, the first mounting surface portion, the second mounting surface portion, and the connecting surface portion excluding the portion subjected to the bending process form flat surfaces, The brace fastener, characterized in that the first mounting surface portion and the second mounting surface portion are attached to surfaces of the first structural member and the second structural member that do not form the inside corner.

7. 7. The brace fixing metal fitting according to claim 1, wherein the bending process is a process of bending the flat plate into an L-shape or a U-shape.

8. A brace fixing bracket 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 of the first structural member and a second structural member, The brace fixing bracket is A first mounting surface portion that is attached to the first structural member; A second mounting surface portion that is attached to 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 has an inner end portion located on the inside corner side and an outer end portion facing the inner end portion, The outer end portion is formed by bending a flat plate constituting the connecting surface portion, As a result of the bending process, a cross-sectional area in a thickness direction per a predetermined length along a direction from the outer end to the inner end in a region from the outer end to the inner end of the connecting surface portion is at least twice as large in the vicinity of the outer end as a portion excluding the vicinity of the outer end, A brace fixing bracket characterized in that a plurality of recesses are provided in the bent portion.

9. 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 that is attached to the first structural member; A second mounting surface portion that is attached to 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 first mounting surface portion and the second mounting surface portion stand at a right angle or an angle close to a right angle on the same side of the connecting surface portion, The connecting surface portion has an inner end portion located on the inside corner side and an outer end portion facing the inner end portion, the outer end portion is formed by bending a flat plate constituting the connecting surface portion in a direction opposite to a side on which the first mounting surface portion and the second mounting surface portion stand, A brace mounting structure characterized in that, due to the bending process, the cross-sectional area in the thickness direction per specified length along the direction from the outer end to the inner end in the region from the outer end to the inner end of the connecting surface portion is more than twice as large near the outer end as in the portion excluding the vicinity of the outer end.

Images