JP2006104769A - Support bracket for heat insulating material and surface material in wooden building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support bracket for supporting a heat insulating material and a surface material in a wall structure or a roof structure of a wooden building. <P>SOLUTION: The support bracket has a platy base plate 11 mountable to structural members 35, 36; a vertical plate 12 vertically erected on the base plate; side plates 13 orthogonal to the vertical plate; and a mounting head part 12b further projected from the end of the vertical plate. When the support bracket is mounted to the structural member so that the vertical plate is parallel with the surface backing materials 32, 42, the mutually orthogonal parts of the vertical plate and side plates are located within a layer of the heat insulating material 20, and the mounting head part is inserted in a fit-in groove 32a bored in the surface backing materials 32, 42. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a heat insulating material and a bracket for supporting a surface material that can rationalize the heat insulating work on the outside of a wooden building and the mounting work of an outer wall material and a roof material.

  In conventional wooden buildings, heat insulation around the outer wall has been performed by filling insulation between the pillars and the studs from the indoor side and sealing with polyethylene film, etc. There is also an increasing number of external thermal insulation methods that provide heat insulation on the outside.

FIG. 8 is a side cross-sectional view schematically and schematically showing an example of a wall structure and a roof structure of a wooden building by an external heat insulating method.
The wall structure is, in order from the outdoor side to the indoor side, outer wall material 31 (siding, concrete thin panel, etc.), ventilation layer 33, heat insulating material 20 (foamed plastic, glass wool, etc.), airtight sheet 34 (polyethylene film, etc.), structural base It has a material 35 (plywood etc.), a pillar 36 and an interior material 37. In the ventilation layer 33 on the back surface of the outer wall material 31, air flows from the bottom to the top as indicated by arrows, and is ventilated to the attic. The passage of the ventilation layer 33 has various structures such as a structure that flows out from under the eaves and a structure that rises along the back surface of the roof and flows out from the top of the roof to the outside. The ventilation layer 33 suppresses high humidity in the wall and moistening due to condensation. In this case, a vertical body edge 32 of several centimeters square supporting the outer wall material 31 is provided in the ventilation layer 33 along the ventilation direction.

  The ceiling ceiling structure of the roof is airtight by laying an airtight sheet such as a polyethylene film on the backside of the ceiling, and a heat insulating material is laid or blown on it. The roof structure has a roof material 41 such as an iron plate or a field plate, and a rafter 42 of several centimeters square that supports the roof material 41.

Japanese Patent Application Laid-Open No. H10-228561 describes that in an outer heat insulating method, an outer wall material, a vertical trunk edge, and a heat insulating material are penetrated using nails, screws, screws, or the like and fixed to a structural material.
JP 2004-244968 A

In the case of the conventional thermal insulation method for wooden buildings, the following problems can be pointed out.
・ It takes a lot of work to fit the insulation material between the pillars and the studs without any gaps, making it difficult to achieve completeness.
・ Because the heat insulating material is filled only between the pillars and the like, the pillars and girders on the outer wall are not insulated, and it is difficult to hermetically seal the joint between the girders and the beams.

In addition, the outer insulation method for a wooden building can solve many of the problems of the above-mentioned filling insulation method, but has the following problems.
-In the case of an outside construction method that insulates the outside of the shaft assembly, it is difficult to tie the heavy outer wall material located on the most outdoor side to the structural material (column, structural base material, etc.). In some cases, the exterior material may fall under its own weight.
-There is no means to easily install and reliably support and fix the insulation.
・ As in Patent Document 1, if a metal fixture such as a nail is frequently used, it can be securely tightened, but heat loss increases and the heat insulation effect is reduced.
Further, in Patent Document 1, since all of the heat insulating material, the vertical trunk edge, and the outer wall material are temporarily fixed and then fixed with a nail or the like, a temporary fixing process is necessary and complicated.

In view of the above situation, an object of the present invention is to provide a bracket for securely fixing and supporting a surface material to a structural material in a wooden building by an external heat insulating method.
Furthermore, the said support bracket aims at not impairing the heat insulation effect.
Still further, the support bracket is intended to be easily constructed.

In order to achieve the above object, the present invention provides the following configuration.
(1) The support bracket of the heat insulating material and the surface material in the wooden building according to claim 1 is:
Each of the surface material (31, 41), the ventilation layer (33), the heat insulating material (20), and the structural material (35, 36) is provided in this order from the outdoor side to the indoor side, and the surface material is provided in the ventilation layer. In order to support the heat insulating material (20) and the surface material (31, 41) in a wall structure or a roof structure of a wooden building in which a surface base material (32, 42) is attached along the ventilation direction Support bracket (1),
A plate-like base plate (11) that can be attached to the structural material (35, 36), a vertical plate (12) erected vertically on the base plate (11), and the base plate (11 ) And a horizontal plate (13) perpendicular to the vertical plate (12) and an end of a portion (12a) of the vertical plate (12) orthogonal to the horizontal plate (13) A mounting head part (12b) further protruding from the part,
When the support bracket (1) is attached to the structural material (35, 36) so that the vertical plate (12) is parallel to the surface base material (32, 42), the vertical plate (12) and the The mutually perpendicular portions of the horizontal plate (13) are located in the layer of the heat insulating material (20), and the fitting head portion (12b) is a fitting groove (32a) formed in the surface base material (32, 42). ).

(2) The support bracket according to claim 2 is formed by joining the first assembly part (1a) and the second assembly part (1b) according to claim 1,
The first assembly component (1a) is composed of the base plate (11) and the vertical plate (12) and is drilled from the base plate side to an intermediate position of the vertical plate (12). With a notch (12c),
The second assembly part (1b) is composed of the horizontal plate (13) and is engaged with the first assembly cut (12c) in a state orthogonal to the vertical plate (12). A notch (13a) is provided.

(3) The support bracket according to claim 3 is made of synthetic resin according to claim 1 or 2.

(4) A support bracket according to a fourth aspect of the present invention is the support bracket according to any one of the first to third aspects, wherein the mounting head portion (12b) is rounded (12e) at a corner on the insertion side into the fitting groove (32a). Is provided.

(5) A support bracket according to a fifth aspect is the attachment according to any one of the first to fourth aspects, wherein the base plate (11) passes the fixture (15) for attachment to the structural member (35, 36). A hole (14) is provided, and the mounting hole (14) is inclined from a direction perpendicular to the surface of the base plate.

(6) A support bracket according to a sixth aspect of the present invention is the support bracket according to any one of the first to fifth aspects, wherein one or a plurality of through holes (12d) are formed in the vertical plate (12) and / or the horizontal plate (13). It is characterized by that.

(1) According to the first aspect of the present invention, a support bracket for a heat insulating material and a surface material in a wooden building (hereinafter sometimes simply referred to as “bracket”) includes a surface base material that supports the surface material, a structural material, Can be connected. The surface material is an outer wall material or a roof material, and the surface base material is a vertical trunk edge or rafter installed in the ventilation layer to attach the surface material. The structural material is a frame structural material such as a pillar, a stud, and a structural plywood.

  The support bracket of the present invention is a vertical plate in which a flat base plate is attached to the surface of a structural material including a column and a plywood laid outside thereof, and is perpendicular to the base plate and perpendicular to the cross-section. And the horizontal plate penetrates the layer of the heat insulating material, and the mounting head portion protruding from the vertical plate is inserted into the fitting groove of the surface base material. As a result, by inserting a fixture such as a screw from both sides of the surface base material and fastening the surface base material and the mounting head portion, the surface base material (that is, the surface material) and the structural material can be firmly connected. it can. As described above, the support bracket of the present invention is integrated with the base material of the surface material that is the outer wall material or the roof material, thereby promoting rationalization of the construction.

  As a result, the outer wall material can be prevented from falling due to its own weight. Since the vertical plate and the horizontal plate are orthogonal to each other in a cross-shaped cross section, the vertical plate and the horizontal plate correspond to stresses in both the vertical and horizontal directions, and are safe against earthquakes. In addition, the cross-shaped cross section stabilizes the four corners when the heat insulating material is fitted and facilitates the mounting.

  Even when the support bracket according to the present invention is connected to a vertical trunk edge or rafter, these vertical trunk edges and rafters form a ventilation layer between the heat insulating material and the outer wall material or roof material as usual, and heat insulation. Inhibits wetting around the outside of the layer.

(2) In addition to the effect of the invention of claim 1, the invention according to claim 2 is easy to manufacture by molding and easy to carry by forming a support bracket from two assembly parts. . Also, assembly at the construction site is easy because only the two parts are cut into each other.

(3) In addition to the effect of the invention of claim 1 or 2, the invention according to claim 3 is made of synthetic resin, and therefore has lower thermal conductivity than a metal fixture. There is little heat loss.

(4) In addition to the effects of any one of the first to third aspects, the invention according to claim 4 is provided with a surface base material fitted by rounding the corners of the mounting head part of the support bracket. Can be easily inserted into the groove.

(5) In addition to the effects of any one of the first to fourth aspects, the invention according to claim 5 is characterized in that the fixing hole with respect to the structural material is formed by the attachment hole to the structural material being inclined. Since it is inserted inclined from the vertical direction, the resistance against the pulling force is increased, and the support bracket can be more firmly fixed.

(6) The invention according to claim 6 saves the material of the support bracket by providing a through hole in the vertical plate or the horizontal plate in addition to the effect of the invention of any one of the first to fifth aspects. Can do.

Hereinafter, details of the embodiment will be described with reference to the drawings.
FIG. 1 is a side sectional view schematically and schematically showing an example of a wall structure and a roof structure by an external heat insulation method using a support bracket according to the present invention.

  In the present specification, the outer wall material 31 in the wall structure and the roof material 41 in the roof structure are collectively referred to as “surface material”. Further, the vertical trunk edge 32 in the ventilation layer 33 in the wall structure and the rafter 42 in the ventilation layer 33 in the roof structure are collectively referred to as “surface base material”. Furthermore, the “structural material” in the present specification is substantially a frame structure such as the column 36, the inter-column, and the beam. In addition, between these structural materials and the heat insulating material, structural base materials 35 such as a plywood and / or an airtight sheet 34 or the like, generally installed components in the external heat insulating method may be interposed.

  The wall structure is, in order from the outdoor side to the indoor side, outer wall material 31 such as siding, lightweight foamed concrete thin panel, ventilation layer 33, heat insulating material 20, airtight sheet 34 such as polyethylene film, structural base material 35 such as structural plywood, It has a pillar 36 and an interior material 37. In the present invention, the heat insulating material 20 is intended to be formed into a plate shape, and includes, for example, foamed polyethylene, rigid urethane foam, plate glass wool, polystyrene foam, plate rock wool, wood fiber molded board, etc. There is no particular limitation as long as it is generally used in a building exterior insulation method.

  In the ventilation layer 33 on the back surface of the outer wall material 31, the air flowing in from the vicinity of the floor rises as indicated by the arrows and is ventilated to the attic. Although not clearly shown in FIG. 1, a vertical trunk edge 32 of several centimeters square that supports the outer wall material 31 is provided in the ventilation layer 33 in this wall structure along the ventilation direction. The length of one side of the cross section of the vertical trunk edge 32 corresponds to the thickness of the ventilation layer 33. The ventilation layer 33 suppresses high humidity in the wall and moistening due to condensation.

  In the wall structure, the base side of the support bracket 1 is fixed to the column 36 via the structural base material 35, and the head side is fixed to the vertical trunk edge 32 in the ventilation layer 33. The support bracket 1 connects the surface base material (vertical trunk edge 32) and the structural material (column 36). That is, it means that the support bracket 1 connects the surface material (outer wall material 31) and the structural material (column 36) and supports the surface material.

  The illustrated roof structure includes a roof material 41, a ventilation layer 33, a heat insulating material 20, an airtight sheet 34, a structural base material 35, and the like in order from the outside to the inside of the roof. There are various styles for the arrangement of the structural base material and the structural material in the roof structure. About the heat insulating material 20, the thing similar to said wall structure can be used. The roofing material 41 includes an iron plate, a field plate, and the like.

  In the ventilation layer 33 on the back surface of the roof material 41, as shown by arrows, the air rising from the wall ventilation layer rises along the roof and flows out from the roof top (not shown). Although not clearly shown in FIG. 1, several cm square rafters 42 that support the roof material 41 are provided in the ventilation layer 33 in this roof structure along the ventilation direction. The length of one side of the cross section of the rafter 42 corresponds to the thickness of the ventilation layer 33.

  In the roof structure of the support bracket 1 according to the present invention, the base side is fixed to an appropriate structural material (not shown) via the structural base material 35, and the head side is fixed to the rafter 42 in the ventilation layer 33. The support bracket 1 connects the surface base material (the rafter 42) and the structural material. That is, it means that the support bracket 1 connects the surface material (roof material 41) and the structural material and supports the surface material.

  FIG. 2 is a view showing the structure of an embodiment of the support bracket 1 of the present invention. FIG. 2A is an external perspective view. FIG. 2B is a plan view. FIG. 2C is a front view. FIG. 2D is a bottom view. FIG. 2E is a side view. The support bracket 1 is preferably made of a synthetic resin and can be mass-produced by molding. As shown in the figure, a flat base plate 11 having a rectangular outline, a vertical plate 12 erected perpendicularly to a central position along the long side direction of the base plate 11, and a rectangular shape of the base plate 11. It is comprised from the horizontal board 13 erected perpendicularly | vertically at the center position along a short side direction. The vertical plate 12 and the horizontal plate 13 are orthogonal to each other in cross-section. The vertical plate 12 and the horizontal plate 13 each have a trapezoidal outline at portions orthogonal to each other, and the lower side coupled to the base plate 11 is longer than the upper side. The lower side of the trapezoidal portion 12 a of the vertical plate 12 has the same length as the long side of the rectangle of the base plate 11. On the other hand, both sides of the lower side of the horizontal plate 13 protrude from the rectangular short side of the base plate 11.

  The vertical plate 12 includes a mounting head portion 12 b that further protrudes from the upper side end portion of the trapezoidal portion 12 a that is orthogonal to the horizontal plate 13. As shown in the figure, the width of the mounting head portion 12b is equal to or smaller than the end portion which is the short side of the trapezoidal portion 12a. The horizontal plate 13 has only a trapezoidal portion.

  The base plate 11 has an attachment hole 14 at an appropriate position through which a fixing tool for fixing to the structural material is passed. As shown in the side view of FIG. 2 (E), the attachment hole 14 is preferably formed so as to be inclined from the direction perpendicular to the surface of the base plate 11 toward the center side of the base plate 11.

  In one embodiment, the base plate 11 has a thickness of 6 mm, a long side of 100 mm, and a short side of 30 mm. Four mounting holes 14 are formed in two rows of four in diameter, and the positions of the mounting holes 14 in the positions of the respective rows are shifted from each other. This is to prevent the inclined fixtures from colliding with each other. The vertical plate 12 has a thickness of 4 mm, its trapezoidal portion 12a has a lower side of 100 mm, an upper side of 45 mm, and a height of 100 mm, and its mounting head portion 12b has a width of 45 mm and a height of 25 mm. The horizontal plate 13 has a thickness of 4 mm, a lower side of 100 mm, and an upper side of 45 mm.

  FIG. 3 is a partially cutaway perspective view schematically and schematically showing a state where the support bracket 1 of the present invention is attached in the wall structure. A pillar 36 as a structural material and a narrow pillar 36a are installed at a predetermined interval on the indoor side, a plywood 35 as a structural base material is laid on the entire outside, and a plate-like heat insulating material 20 on the outside. Is laid throughout. On the outside of the heat insulating material 20, a vertical trunk edge 32 is installed at a position corresponding to the column 36 and the inter-column 36 a. A space in which the vertical trunk edge 32 is installed serves as a ventilation layer (see an upward arrow). An outer wall material 31 is installed outside the vertical trunk edge 32. In addition, the airtight sheet | seat between the plywood 35 and the heat insulating material 20 is abbreviate | omitting illustration.

  In the construction, the base plate 11 of the support bracket 1 is fixed to the column 36 or the intermediate column 36a through the plywood 35 with a fixing tool such as a screw passed through the mounting hole 14. Next, the heat insulating material 20 is installed. Thereby, the orthogonal | vertical part of the vertical board 12 of the support bracket 1 and the horizontal board 13 is embedded in the heat insulating material 20, and it will be in the state which only the attachment head part 12b of the vertical board 12 protruded. In FIG. 3, for the sake of explanation, a part of the heat insulating material 20 is notched and the support bracket 1 is exposed. Next, the vertical trunk edge 32 is installed and fixed so that the mounting head portion 12b of the vertical plate 12 is inserted into the fitting groove provided on the vertical trunk edge 32. Finally, the outer wall material 31 is attached to the vertical trunk edge 32.

  FIG. 4A is a partially enlarged perspective view showing in detail the mounting state of the support bracket 1 of the present invention shown in FIG. However, in this figure, illustration of a heat insulating material is abbreviate | omitted and the airtight sheet | seat is also abbreviate | omitted. FIG. 4B is a cross-sectional view taken along the line AA in FIG. FIG. 4C is a cross-sectional view of a portion where the fitting groove 32 a is formed in the vertical trunk edge 32. As shown in the cross-sectional view of FIG. 4B, the base plate 11 is fixed to the column 36 through the plywood 35 through the fixture 15 such as a screw through the inclined mounting hole 14. Since the fixtures 15 are inclined, the positions of the left and right mounting holes 14 are shifted so that adjacent fixtures 15 do not collide with each other (see FIG. 2B).

  On the other hand, the mounting head portion 12 b of the vertical plate 12 is inserted into the fitting groove of the vertical trunk edge 32, and a fixing tool 16 such as a screw is inserted from both sides of the vertical trunk edge 32, and the mounting head portion 12 b and the vertical trunk edge 32 are inserted. And fix. Thus, the outer bracket 31 and the column 36 can be firmly coupled by the support bracket 1.

  In the case of the roof structure, the vertical trunk edge 32 in FIGS. 3 and 4 is replaced with the rafter 42 in FIG. 1.

  FIG. 5A is a plan view seen from the outdoor side showing one embodiment of a method of attaching the heat insulating material 20 to the support bracket 1, and FIG. 5B is a plan view of another embodiment. FIG. 5A shows a case where a large plate-like heat insulating material 20 is installed as compared with the arrangement interval of the support brackets 1. In this case, a cross-shaped cut is made in advance on the heat insulating material 20 at the same interval as the arrangement interval of the support brackets 1. Then, the orthogonal portion of the support bracket 1 is inserted into the cross-shaped cut of the heat insulating material 20, and the mounting head portion is protruded from the opposite side of the heat insulating material 20. FIG. 5B shows a case where the plate-like heat insulating materials 20a to 20f having the same size as the arrangement interval of the support brackets 1 are installed. In this case, orthogonal portions of the support bracket 1 are fitted to and supported by the four corners of each of the heat insulating materials 20a to 20f.

  FIG. 6 is a view showing a structure of a preferred example of the support bracket 1. The support bracket 1 of the preferred example is formed by integrating the first assembly part 1a and the second assembly part 1b. 6A1 is a front view of the first assembly component 1a, FIG. 6A2 is a side view thereof, and FIG. 6A3 is a plan view thereof. FIG. 6 (B1) is a front view of the second assembly component 1b, and FIG. 6 (B2) is a side view thereof.

  As shown in FIG. 6A1 to FIG. 6A3, the first assembly component 1a includes a base plate 11 and a vertical plate 12 erected vertically on the base plate 11. The vertical plate 12 includes a trapezoidal portion 12a and a mounting head portion 12b that protrudes from an upper end portion thereof. A first assembly cut 12c extending from the base plate 11 side to an intermediate position of the vertical plate 12 is formed. The mounting holes 14 provided in the base plate 11 are the same as in the embodiment of FIG. On the other hand, as shown in FIG. 6 (B1) and FIG. 6 (B2), the second assembly component 1b is composed of a trapezoidal horizontal plate 13. And the 2nd notch 13a for assembly extended from the upper edge part of a trapezoid to an intermediate position is drilled.

  FIG. 7A is a diagram showing a state in which the first assembly part 1a and the second assembly part 1b of FIG. 6 are coupled. When the vertical plate 12 of the first assembly part 1a and the horizontal plate 13 of the second assembly part 1b are orthogonal to each other, the first assembly cut 12c and the second assembly cut 13a are fitted to each other. As shown in FIG. 7B, the support bracket 1 is completed.

  Returning to FIG. 6 again, another preferred example of the support bracket 1 of the present invention will be described. As shown in FIG. 6 (A1), it is preferable to provide roundness 12e at the corner on the insertion side of the surface base material into the fitting groove in the mounting head portion 12b of the vertical plate 12. This facilitates insertion.

  Further, as shown in FIG. 6A1, one or a plurality of through holes 12d are formed in the vertical plate 12. The positions and the number of these through holes are designed so that there is no problem in strength. Thereby, the material of the support bracket 1 can be saved. In addition, this through-hole may be provided in the horizontal plate 13 instead of the vertical plate 12, or may be provided in both.

It is side sectional drawing which shows typically and an example of the wall structure and roof structure by the outer-layer heat insulation construction method using the support bracket by this invention. It is a figure which shows the structure of one Example of the support bracket 1 of this invention. (A) is an external perspective view. (B) is a plan view. (C) is a front view. (D) is a bottom view. (E) is a side view. In a wall structure, it is a partial notch perspective view which shows typically and the state which attached the support bracket 1 of this invention typically. (A) is the elements on larger scale which show in detail the attachment state of the support bracket 1 of this invention shown in FIG. (B) is AA sectional drawing of (A). FIG. 3C is a cross-sectional view of a portion where the fitting groove 32a is formed in the vertical trunk edge 32. FIG. (A) is the top view seen from the outdoor side which showed one Example of the attachment method of the heat insulating material 20 with respect to the support bracket 1, FIG.5 (B) is a top view of another Example. It is a figure which shows the structure of the suitable example of the support bracket. (A1) is a front view of the first assembly part 1a, (A2) is a side view thereof, and (A3) is a plan view thereof. (B1) is a front view of the second assembly part 1b, and (B2) is a side view thereof. (A) is the figure which showed a mode that the 1st assembly component 1a and the 2nd assembly component 1b were couple | bonded, (B) is a completion drawing. It is side sectional drawing which shows typically and an example of the wall structure and roof structure of a wooden building by an outer-layer heat insulation construction method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support bracket 1a 1st assembly part 1b 2nd assembly part 11 Base board 12 Vertical board 12a Thermal insulation support part 12b Mounting head part 12c 1st notch for an assembly 12d Punching hole 13 Horizontal board 13a 2nd notch for an assembly 14 Base mounting hole 15 Fixing tool 16 Fixing tool 20, 20a-20f Thermal insulation material 31 Surface material (outer wall material)
32 Surface base material (vertical trunk edge)
32a Insertion groove 33 Ventilation layer 34 Airtight sheet 35 Structural base material 36 Column 36a Intermediary column 37 Interior material 41 Surface material (roof material)
42 Surface base material (rafter)

Claims (6)

Each of the surface material (31, 41), the ventilation layer (33), the heat insulating material (20), and the structural material (35, 36) is provided in this order from the outdoor side to the indoor side, and the surface material is provided in the ventilation layer. In order to support the heat insulating material (20) and the surface material (31, 41) in a wall structure or a roof structure of a wooden building in which a surface base material (32, 42) is attached along the ventilation direction Support bracket (1),
A plate-like base plate (11) that can be attached to the structural material (35, 36), a vertical plate (12) erected vertically on the base plate (11), and the base plate (11 ) And a horizontal plate (13) perpendicular to the vertical plate (12) and an end of a portion (12a) of the vertical plate (12) orthogonal to the horizontal plate (13) A mounting head part (12b) further protruding from the part,
When the support bracket (1) is attached to the structural material (35, 36) so that the vertical plate (12) is parallel to the surface base material (32, 42), the vertical plate (12) and the The mutually perpendicular portions of the horizontal plate (13) are located in the layer of the heat insulating material (20), and the fitting head portion (12b) is a fitting groove (32a) formed in the surface base material (32, 42). A support bracket for a heat insulating material and a surface material in a wooden building. Formed by joining the first assembly part (1a) and the second assembly part (1b),
The first assembly component (1a) is composed of the base plate (11) and the vertical plate (12) and is drilled from the base plate side to an intermediate position of the vertical plate (12). With a notch (12c),
The second assembly part (1b) is composed of the horizontal plate (13) and is engaged with the first assembly cut (12c) in a state orthogonal to the vertical plate (12). The support bracket according to claim 1, wherein a notch (13a) is provided.   The support bracket according to claim 1 or 2, wherein the support bracket is made of a synthetic resin. The support bracket according to any one of claims 1 to 3, wherein the mounting head portion (12b) is provided with a roundness (12e) at a corner portion on an insertion side into the fitting groove (32a). The base plate (11) includes a mounting hole (14) through which a fixing tool (15) for mounting to the structural material (35, 36) is passed, and the mounting hole (14) is against the surface of the base plate. The support bracket according to any one of claims 1 to 4, wherein the support bracket is inclined from a vertical direction. The support bracket according to any one of claims 1 to 5, wherein one or a plurality of through holes (12d) are formed in the vertical plate (12) and / or the horizontal plate (13).

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