Mounting bracket for exterior wall material and mounting structure for exterior wall material

Abstract

Increases fastening strength to the underlying steel material and prevents it from falling off. [Solution] A mounting bracket 1 for an exterior wall material comprises a main body 2 having an elongated hole 23, and an engaging portion 3 provided at one end of the main body 2. The engaging portion 3 is bent in a mountain shape relative to a first surface 21 of the main body 2, forming an engaging recess 30 in a width direction X perpendicular to the extension direction Y of the elongated hole 23, and is provided with a plurality of claws 4 extending toward the inside of the engaging recess 30. The claws 4 extend in directions that intersect with each other, and are arranged to clamp the clamped portion of the underlying steel material.

Description

[Technical Field]

[0001] The present disclosure relates to a mounting bracket for an exterior wall material and a mounting structure for an exterior wall material using the same. [Background technology]

[0002] Conventionally, as disclosed in Patent Document 1, it has been proposed to attach exterior wall panels by fixing base steel material to the steel beams of a steel-framed house, while engaging mounting brackets with the lip portion of the base steel material and fixing them to the exterior wall panel via bolts. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-38603 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, if an earthquake or other event causes interlayer deformation of an exterior wall panel relative to a structural body such as a steel beam, the fastening force acting on the lip portion of the underlying steel material in the mounting bracket may decrease, or the engaging portion may ride up onto the lip portion.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and its purpose is to provide a mounting bracket for exterior wall materials and a mounting structure for exterior wall materials that can increase the fastening force to the underlying steel material and stably maintain the fixed state of the exterior wall panel. [Means for solving the problem]

[0006] The solution of the present disclosure for achieving the above-mentioned object is a mounting bracket for exterior wall materials, comprising a main body portion having a long hole and an engaging portion provided at one end of the main body portion, the engaging portion being bent in a mountain shape relative to a first surface which is one surface of the main body portion so as to form an engaging recess extending in a width direction perpendicular to the extension direction of the long hole, and comprising a plurality of claw portions extending toward the inside of the engaging recess, the plurality of claw portions extending in directions which intersect with each other and are arranged to clamp the clamped portion of the underlying steel material.

[0007] In addition, it is preferable that the plurality of claw portions of the mounting fixture are arranged at least at both ends and the center in the width direction.

[0008] Furthermore, in the mounting bracket, it is preferable that the engagement recess has a first inclined portion that is continuous with the main body portion and is inclined in a valley-bend direction relative to the first surface, and a second inclined portion that is continuous with the first inclined portion and is inclined in a mountain-bend direction relative to the first inclined portion, so as to form a U-shaped or V-shaped cross section, and that the multiple claw portions include a first claw portion provided on the first inclined portion and a second claw portion provided on the second inclined portion.

[0009] Preferably, the mounting fixture has a plurality of first claw portions and / or a plurality of second claw portions, each of which is disposed at both ends in the width direction.

[0010] In addition, in the mounting fixture, the first claw portion may be provided at the center of the first inclined portion in the width direction, and the second claw portions may be provided at both ends of the second inclined portion in the width direction.

[0011] Furthermore, it is preferable that the other end of the main body of the mounting fixture has a protruding ridge extending in the width direction and provided in a convex shape on a second surface opposite the first surface.

[0012] In the mounting fixture, the protrusions preferably have a rounded convex shape.

[0013] A mounting structure for an exterior wall material using the above-mentioned mounting bracket for an exterior wall material also falls within the scope of the technical idea of ​​the present disclosure. That is, the mounting structure for an exterior wall material is characterized in that a mounting member is attached to the exterior wall material, the base steel is supported by a beam arranged on the indoor side of the exterior wall material and is arranged with the clamped portion facing the indoor side, the engaging portion of the mounting bracket engages with the clamped portion of the base steel, the multiple claws clamp and hold the clamped portion, and the mounting bracket is bolted to the mounting member via the elongated hole, thereby fixing the exterior wall material to the beam. [Effects of the Invention]

[0014] According to the present disclosure, it is possible to increase the fastening force to the underlying steel material when used as a mounting bracket for exterior wall materials. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a plan view showing a mounting bracket according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a side view of the mounting bracket of FIG. 1. [Figure 3] 2 is a perspective view showing the mounting bracket of FIG. 1 as seen obliquely from above. FIG. [Figure 4] 2 is a perspective view showing the mounting bracket of FIG. 1 as seen obliquely from below. FIG. [Figure 5] FIG. 2 is a front view of the mounting bracket of FIG. 1. [Figure 6] 1 is a vertical cross-sectional view showing a mounting structure for an exterior building material using a mounting bracket according to an embodiment of the present disclosure. [Figure 7] FIG. 7 is a front view of the mounting structure for the exterior building material shown in FIG. 6. DETAILED DESCRIPTION OF THE INVENTION

[0016] A mounting bracket 1 according to an embodiment of the present disclosure will be described with reference to the drawings. Figures 1 to 5 show a mounting bracket 1 for an exterior building material according to an embodiment of the present disclosure, with Figure 1 being a plan view of the mounting bracket 1, Figure 2 being a side view of the mounting bracket 1, Figure 3 being a perspective view of the mounting bracket 1 seen diagonally from above, Figure 4 being a perspective view of the mounting bracket 1 seen diagonally from below, and Figure 5 being a front view of the mounting bracket 1.

[0017] The mounting bracket 1 comprises a main body 2 and an engaging portion 3 provided contiguous with the main body 2. The main body 2 has an overall shape like a generally rectangular flat plate that is long in the Y direction in the figure, and is provided with a long hole 23 that is long in the Y direction. Two ribs 24 protrude from a first surface 21, which is one of the faces of the main body 2, on either side of the long hole 23. The ribs 24 extend long in the extension direction Y of the long hole 23 and are formed in a rounded convex shape. The engaging portion 3 is provided at one end of the main body 2, and the other end has both corners removed to provide a chamfered portion 27. One end of the rib 24 is extended long enough to reach the engaging portion 3, and acts to reinforce the main body 2 and the engaging portion 3.

[0018] The other end of the main body 2 is further provided with a protrusion 5 extending elongately in the width direction X. The protrusion 5 protrudes from a second surface 22 opposite the first surface 21. As shown in FIG. 4, the protrusion 5 is formed as a single rounded convex without any sharp corners. The second surface 22 of the main body 2 serves as the abutment surface for the exterior wall material or the mounting component for the exterior wall material. The protrusion 5 protruding from the second surface 22 serves to properly maintain the mounting position of the mounting bracket 1. As shown in FIG. 3, the portion of the protrusion 5 appears as a recess 51 on the first surface 21 side of the main body 2.

[0019] The engaging portion 3 of the mounting bracket 1 is bent in a mountain-like shape relative to the first surface 21 of the main body 2, and is provided with an engaging recess 30 that extends in a width direction X perpendicular to the extension direction Y of the elongated hole 23. In the illustrated embodiment, as shown in Fig. 5, the engaging recess 30 includes a first inclined portion 31 that continues from the main body 2 and is inclined in a valley-bend direction relative to the first surface 21, and a second inclined portion 32 that continues from the first inclined portion 31 and is inclined in a mountain-bend direction relative to the first inclined portion 31, so that the first inclined portion 31 and the second inclined portion 32 form a rounded, generally U-shaped or V-shaped cross section. The angle θ formed by the first inclined portion 31 and the second inclined portion 32 is set narrower than conventional angles, and can be, for example, 60 degrees.

[0020] The engagement portion 3 has a plurality of claw portions 4 that extend toward the inside of the engagement recess 30. In the mounting bracket 1 according to this embodiment, the claw portions 4 include a first claw portion 41 and two second claw portions 42.

[0021] 3, the first claw portion 41 is provided on the first inclined portion 31, and in this case, is formed by bending a part of the first inclined portion 31 toward the inside of the engagement recess 30. An opening 25 is formed around the periphery of the first claw portion 41, penetrating the front and back of the first inclined portion 31. The first claw portion 41 is provided in the center of the first inclined portion 31 in the width direction X.

[0022] 4, the second claws 42 are provided on the second inclined portion 32, and in this case, are formed by bending a portion of the second inclined portion 32 toward the inside of the engagement recess 30. A slit-shaped opening 26 is formed around the second claws 42, penetrating the front and back of the second inclined portion 32. In the illustrated embodiment, the second claws 42 are provided on both ends of the second inclined portion 32 in the width direction X.

[0023] Referring to FIG. 5 , the first claw portion 41 and the second claw portion 42 of the claw portion 4 both extend in a direction from the first surface 21 side toward the second surface 22 side of the main body 2. That is, when the first surface 21 is considered to be the upper surface and the second surface 22 is considered to be the lower surface, the first claw portion 41 has a base portion continuous with the first inclined portion 31 at an upper position and a tip portion at a lower position. The first claw portion 41 extends at an angle relative to the first inclined portion 31 and is disposed inside the engagement recess 30. The second claw portion 42 also has a base portion continuous with the second inclined portion 32 at an upper position and a tip portion at a lower position. The second claw portion 42 extends at an angle relative to the second inclined portion 32 and is disposed inside the engagement recess 30.

[0024] The first claw portion 41 and the second claw portion 42 are also capable of clamping a lip portion 151, which is a clamped portion of the base steel material 15 described below. The first claw portion 41 and the two second claw portions 42 extend in directions that intersect with each other, and are formed so that their tips can clamp the lip portion 151 of the base steel material 15 arranged in the engagement recess 30. In a front view, the distance D in the figure between the tips of the first claw portion 41 and the second claw portion 42 is set to correspond to the thickness of the lip portion 151. The first claw portion 41 and the second claw portion 42 are spaced apart in the width direction X, but the distance D between the tips in the extension direction Y can be, for example, 3.5 mm.

[0025] The multiple claws 4, including the first claws 41 and the second claws 42, are evenly arranged in the width direction X of the mounting bracket 1. When the lip portion 151 of the base steel material 15 is inserted into the engagement recess 30, the tip of the lip portion 151 is sandwiched between the multiple claws 4. The second claws 42 abut against the lip portion 151 at both ends in the width direction X, and the first claws 41 abut against the lip portion 151 at the center in the width direction X. The first claws 41 and the second claws 42 sandwich and hold the lip portion 151 of the base steel material 15.

[0026] As a result, even if an external force in the rotational direction acts on the mounting bracket 1 around the bolt 6 inserted into the elongated hole 23 of the mounting bracket 1, the lip portion 151 is stably clamped by the multiple claws 4 evenly arranged in the width direction X, making it possible to maintain an engaged state with the base steel material 15. In addition, because the protrusions 5 of the mounting bracket 1 are formed in a rounded convex shape, there is no risk of damaging the exterior wall panel 10 even when they come into contact with the exterior wall panel 10, and it is possible to maintain a stable mounting state.

[0027] 6 and 7 show a mounting structure for an exterior building material using the mounting bracket 1, with FIG. 6 being a vertical cross-sectional view and FIG. 7 being a front view as seen from the indoor side.

[0028] The mounting bracket 1 having the above-described configuration can be used to attach an exterior wall panel 10, which serves as an exterior wall material, to a base steel material 15 provided in the structural frame of a building. The exterior wall panel 10 is, for example, a precast concrete panel, and has a decorative finish applied to its exterior surface, forming the exterior wall surface of the building.

[0029] As an example of the mounting structure, as shown in Figures 6 and 7, a lower support plate 14 is fixed to the upper surface of the upper flange 12 of a steel beam 11 via bolts and nuts, and a base steel material 15 is welded and fixed onto the lower support plate 14. The lower support plate 14 extends to the outdoor side, protruding from the underside of the base steel material 15. An upper support plate 16 is fixed to the underside of the bottom flange 13 of the steel beam 11 via bolts and nuts, and the base steel material 15 is welded and fixed to the underside of the upper support plate 16. For example, a channel steel having a lip portion 151 can be used as the base steel material 15. The base steel material 15 is arranged with the lip portion 151 facing indoors (towards the steel beam 11).

[0030] A mounting rail 18 serving as a mounting member is attached to the exterior wall panel 10 along the height direction. The mounting rail 18 is made of, for example, a channel steel or hat steel, and reinforces the exterior wall panel 10 while providing a joint with the mounting bracket 1. The mounting bracket 1 is arranged along the mounting rail 18. When the mounting bracket 1 is fixed to the bottom of the exterior wall panel 10, the engaging portion 3 is arranged so as to face downward relative to the main body portion 2, and when the mounting bracket 1 is fixed to the top of the exterior wall panel 10, the engaging portion 3 is arranged so as to face upward relative to the main body portion 2.

[0031] The mounting bracket 1 is bolted to the mounting rail 18 by threading a bolt 6 through the elongated hole 23. An insert nut is provided on the mounting rail 18, and the bolt 6 is threaded into the insert nut by aligning its axis. The engaging portion 3 of the mounting bracket 1 engages with the lip portion 151 of the base steel material 15, and the exterior wall panel 10 is fixed to the steel beam 11 by tightening the bolt 6. In this way, the exterior wall panel 10 can be fixed to the steel beam 11 by the simple process of engaging the mounting bracket 1 with the lip portion 151 of the base steel material 15 and fastening it with the bolt.

[0032] After the mounting bracket 1 is installed, a fiber-based covering material 17 is fixed to the mounting rail 18 and steel beam 11. The fiber-based covering material 17 covers the indoor side of the exterior wall panel 10 and the exposed parts of the mounting rail 18 and steel beam 11 from the indoor side. The fiber-based covering material 17 is, for example, felt-like rock wool with high fire resistance or glass wool made of glass fiber with heat insulation properties, and is flexible enough to be easily bent so that it can be tightly attached to each member.

[0033] In a mounting structure configured in this manner, as shown in Figure 5, the mounting bracket 1 is fixed in place with the first claw 41 and second claw 42 of the engaging portion 3 sandwiching the lip portion 151 from both sides in the extension direction Y. This prevents the mounting bracket 1 from moving in the extension direction Y of the elongated hole 23. Therefore, the engaging portion 3 is less likely to ride up onto the lip portion 151, preventing the mounting bracket 1 from falling off and also preventing the bolt 6 from moving to the end of the elongated hole 23, ensuring a stable mounting state.

[0034] Furthermore, because the multiple claws 4 of the engaging portion 3 are engaged by clamping the lip portion 151 of the base steel 15, the multiple claws 4 will remain clamping the lip portion 151 even if an external force in the rotational direction around the bolt 6 acts on the mounting bracket 1. For example, even if the exterior wall panel 10 is displaced between layers due to an earthquake or the like, the fastening force of the mounting bracket 1 is less likely to decrease, horizontal movement of the exterior wall panel 10 is suppressed, and the mounting bracket 1 can be prevented from rotating and coming off the base steel 15, making it possible to stably maintain the mounting state of the exterior wall panel 10.

[0035] In the mounting bracket 1, the protrusion 5 that protrudes from the second surface 22 of the main body 2 has a rounded convex shape, so even if interlayer displacement occurs, there is no risk of scraping the exterior wall panel 10 by contact with it, preventing damage to the exterior wall panel 10. Furthermore, because the protrusion 5 is integrally formed on the main body 2 and protrudes from the second surface 22, it is highly rigid and there is little risk of deformation. Therefore, the effect of properly maintaining the mounting position of the mounting bracket 1 can be sustained, making it possible to maintain a stable mounting state.

[0036] The mounting bracket 1 may be attached to the mounting rail 18 of the exterior wall panel 10 in advance. Alternatively, the exterior wall panel 10 may be erected with the mounting bracket 1 attached, and the engaging portion 3 may be engaged with the lip portion 151 of the base steel material 15 and secured by tightening the bolt 6. The arrangement and number of the first and second claws 41 and 42 on the engaging portion 3 of the mounting bracket 1 are not limited to the above arrangement and may be arranged in any manner toward the inside of the engaging recess 30. For example, the first claws 41 may be provided at both ends of the first inclined portion 31 in the width direction X, and the second claws 42 may be provided at the center of the second inclined portion 32 in the width direction X. Various exterior wall materials, such as precast concrete panels, extruded cement panels, and ALC panels, can be used for the exterior wall panel 10. The fiber-based covering material 17 covering the interior side of the exterior wall panel 10, the mounting rail 18, and the steel beams 11, etc., does not necessarily need to be secured.

[0037] The present disclosure is not limited to the above-described embodiments, and various modifications are possible within the scope of the technical gist thereof, and all technical matters included in the technical ideas described in the claims are the subject of the present disclosure. The above-described embodiments are preferred examples, but various modifications can be realized from the disclosed contents, and such modifications are also included in the technical scope described in the claims.

[0038] The following supplementary notes are further disclosed regarding the technical contents described in the above embodiment.

[0039] (Appendix 1) A mounting bracket for an exterior wall material, a main body portion having a long hole and an engagement portion provided at one end of the main body portion, The engagement portion is The first surface of the main body is bent in a mountain shape to form an engagement recess extending in a width direction perpendicular to the extension direction of the long hole, a plurality of claws extending toward the inside of the engagement recess, The mounting bracket is characterized in that the plurality of claw portions extend in directions intersecting each other and are arranged to clamp the clamped portion of the base steel material.

[0040] (Appendix 2) In the mounting bracket described in Appendix 1, The mounting bracket is characterized in that the plurality of claw portions are arranged at least at both ends and a center portion in the width direction.

[0041] (Appendix 3) In the mounting bracket described in Appendix 1 or 2, the engagement recess is provided so that a first inclined portion, which is continuous with the main body portion and inclined in a valley-bend manner with respect to the first surface, and a second inclined portion, which is continuous with the first inclined portion and inclined in a mountain-bend manner with respect to the first inclined portion, form a U-shaped or V-shaped cross section; The mounting bracket, wherein the plurality of claw portions include a first claw portion provided on the first inclined portion and a second claw portion provided on the second inclined portion.

[0042] (Appendix 4) In the mounting bracket described in Appendix 3, The mounting bracket is characterized in that at least one of the first claw portion and the second claw portion is provided in plurality and is arranged at both end portions in the width direction.

[0043] (Appendix 5) In the mounting bracket described in Appendix 3, the first claw portion is provided at the center of the first inclined portion in the width direction, The mounting bracket is characterized in that the second claw portions are provided at both ends of the second inclined portion in the width direction.

[0044] (Appendix 6) In the mounting bracket described in any one of appendices 1 to 5, A mounting bracket characterized in that a protrusion extending in the width direction is provided in a convex shape on a second surface opposite the first surface at the other end of the main body.

[0045] (Appendix 7) In the mounting bracket described in Appendix 6, The mounting bracket is characterized in that the protrusion portion has a rounded convex shape.

[0046] (Appendix 8) A mounting structure for an exterior wall material using the mounting bracket described in any one of appendices 1 to 7, Mounting members are attached to the exterior wall material, The foundation steel material is supported by a beam disposed on the indoor side of the exterior wall material, and is disposed with the clamped portion facing the indoor side, The mounting fixture has the engaging portion engaged with the clamped portion of the base steel material, and the plurality of claw portions clamp and hold the clamped portion, The mounting structure for exterior wall materials is characterized in that the mounting bracket is bolted to the mounting member through the long hole, thereby fixing the exterior wall material to the beam. [Explanation of symbols]

[0047] 1 Mounting bracket 10 Exterior wall panels (exterior wall materials) 11 Steel beams 12 Upper flange 13 Lower flange 15 Base steel 151 Lip portion (clamped portion) 2 Main body 21 Page 1 22 Side 2 23 long hole 24 Ribs 25, 26 Openings 27 Chamfered part 3 Engagement part 30 Engagement recess 31 1st slope part 32 2nd slope part 4 Claws 41 1st claw part 42 2nd claw part 5 Projection part 51 Recess 6 volts

Claims

1. A mounting bracket for an exterior wall material, a main body portion having a long hole and an engagement portion provided at one end of the main body portion, The engagement portion is The first surface of the main body is bent in a mountain shape to form an engagement recess extending in a width direction perpendicular to the extension direction of the long hole, a plurality of claws extending toward the inside of the engagement recess, The mounting bracket is characterized in that the plurality of claw portions extend in directions intersecting each other and are arranged to clamp the clamped portion of the base steel material.

2. The mounting bracket according to claim 1, The mounting bracket is characterized in that the plurality of claw portions are arranged at least at both ends and a center portion in the width direction.

3. The mounting bracket according to claim 1, the engaging recess is provided so that a first inclined portion, which is continuous with the main body portion and inclined in a valley-bend manner with respect to the first surface, and a second inclined portion, which is continuous with the first inclined portion and inclined in a mountain-bend manner with respect to the first inclined portion, form a U-shaped or V-shaped cross section, The mounting bracket, characterized in that the plurality of claw portions include a first claw portion provided on the first inclined portion and a second claw portion provided on the second inclined portion.

4. The mounting bracket according to claim 3, The mounting bracket is characterized in that at least one of the first claw portion and the second claw portion is provided in plurality and is arranged at both end portions in the width direction.

5. The mounting bracket according to claim 3, the first claw portion is provided at a center portion in the width direction of the first inclined portion, The mounting bracket is characterized in that the second claw portions are provided at both ends of the second inclined portion in the width direction.

6. The mounting bracket according to claim 1, A mounting bracket characterized in that a protrusion extending in the width direction is provided in a convex shape on a second surface opposite the first surface at the other end of the main body.

7. The mounting bracket according to claim 6, The mounting bracket is characterized in that the protrusion portion has a rounded convex shape.

8. A mounting structure for an exterior wall material using the mounting bracket according to any one of claims 1 to 7, Mounting members are attached to the exterior wall material, The foundation steel material is supported by a beam disposed on the indoor side of the exterior wall material, and is disposed with the clamped portion facing the indoor side, The mounting fixture has the engaging portion engaged with the clamped portion of the base steel material, and the plurality of claw portions clamp and hold the clamped portion, The mounting structure for exterior wall materials is characterized in that the mounting bracket is bolted to the mounting member through the long hole, thereby fixing the exterior wall material to the beam.

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