Reinforcement structure of deformed stud

Abstract

To provide a reinforcement structure of a deformed stud that can reinforce a cutout.SOLUTION: A reinforcement structure of a deformed stud for reinforcing a deformed stud having a cutout portion (31) with an approximately U-shaped cross section in part of a vertical direction comprises: a reinforcement member (4) that is arranged to block an opening (120b) between a pair of side portions (125) of the cutout portion and that makes the cutout portion a closed cross section; and fixing means for fixing the reinforcement tool to the deformed stud.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a reinforcement structure for a deformed stud, and more particularly to a reinforcement structure for a deformed stud having a notch at the portion where it interferes with a brace. [Background technology]

[0002] The walls of buildings such as houses are equipped with multiple columns and studs as base members. Studs come in two shapes: rectangular (closed cross section) and C-shaped (open cross section).

[0003] When a stud deforms, the gypsum board or other plate-like member is susceptible to the deformation and falls off, so techniques to prevent stud deformation have been proposed. For example, Japanese Utility Model Laid-Open Publication No. 7-29111 (Patent Document 1) discloses providing a spacer between the openings of a C-shaped stud that is attracted to the stud by magnetic force. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 7-29111 Summary of the Invention [Problem to be solved by the invention]

[0005] To improve the strength of a building, braces are sometimes installed inside the wall. To accommodate such walls, notches are sometimes installed in the top and bottom of the studs. The notch is a cutout on the back side (lip side) of the stud, giving it an approximately U-shaped cross section.

[0006] Since the second moment of area of ​​the notched section is smaller than that of the other parts (general parts) of square or C-shaped sections, there is a concern that walls equipped with such irregular studs may have lower fire resistance than walls equipped with normal (non-notched) studs.

[0007] The present invention has been made to solve the above-mentioned problems, and its object is to provide a reinforcing structure for a deformed stud that can reinforce the notch portion. [Means for solving the problem]

[0008] A reinforcing structure for a deformed stud according to one aspect of the present invention is a reinforcing structure for reinforcing a deformed stud having a cutout portion with an approximately U-shaped cross-section in part of the vertical direction, and comprises a reinforcing element arranged to block the opening between a pair of side portions of the cutout portion, giving the cutout portion a closed cross-section, and fixing means for fixing the reinforcing element to the deformed stud.

[0009] Preferably, the reinforcing member includes a facing portion arranged approximately parallel to the surface portion of the cutout portion, and a pair of flange portions formed by bending both widthwise ends of the facing portion so as to contact or be close to the side portions of the cutout portion.

[0010] The reinforcing member is preferably fitted inside the notch, and the tips of the pair of flanges are preferably in contact with the surface portion.

[0011] Preferably, the fixing means is configured by a fastening member that fastens the flange and the side surface, or a clamping member that is provided on the flange and clamps the side surface.

[0012] Alternatively, the fixing means may include a through hole provided in the side surface portion, and a latch piece provided in the flange portion and latched onto the through hole.

[0013] Preferably, the reinforcement further includes a connecting portion provided at the upper and lower ends of the facing portion and connected to the general portion of the profiled stud.

[0014] Preferably, the connecting portion is formed by ear portions extending from both widthwise ends of the facing portion in the direction opposite to the flange portion and fixed to the side surfaces of the general portion.

[0015] Alternatively, the connecting portion may be configured as a protruding portion that protrudes from the widthwise center of the facing portion in the opposite direction to the flange portion and is fixed to the lip portion of the general portion.

[0016] A reinforcing structure for an irregular stud according to another aspect of the present invention is a reinforcing structure for reinforcing an irregular stud having a cutout portion with an approximately U-shaped cross section in part of the vertical direction, and is provided with a pair of bending portions in which unnecessary portions at the cutout portion are bent inward to close the opening of the cutout portion, and connecting means for connecting the pair of bending portions. [Effects of the Invention]

[0017] According to the present invention, it is possible to suppress out-of-plane deformation of the notch, thereby reinforcing the notch, thereby improving the fire resistance of walls equipped with deformed studs. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a cross-sectional view schematically showing the basic structure of an exterior wall according to an embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view schematically showing the internal configuration of an outer wall according to the embodiment of the present invention. [Figure 3] 10A and 10B are diagrams showing an example of the structure of a deformed stud having a notch portion. [Figure 4] FIG. 1 is a diagram showing a typical heat resistance performance of an exterior wall equipped with profiled studs having notches. [Figure 5] FIG. 1 is a cross-sectional view schematically showing a method for reinforcing a deformed stud. [Figure 6] 1 is a perspective view showing a reinforcing member according to a first embodiment of the present invention. [Figure 7] 1 is a cross-sectional view showing a reinforcement structure for a deformed stud according to a first embodiment of the present invention. FIG. [Figure 8] FIG. 2 is a perspective view schematically showing a method for attaching a reinforcing tool according to the first embodiment of the present invention. [Figure 9] 1 is a longitudinal cross-sectional view of a deformed stud to which a reinforcing element is attached in accordance with a first embodiment of the present invention. FIG. [Figure 10] FIG. 10 is a perspective view showing a reinforcing member according to a second embodiment of the present invention. [Figure 11] FIG. 10 is a cross-sectional view showing a reinforcement structure for a deformed stud in accordance with a second embodiment of the present invention. [Figure 12] FIG. 10 is a perspective view schematically showing a method for attaching a reinforcing tool according to a second embodiment of the present invention. [Figure 13] FIG. 10 is a diagram schematically showing a method for processing a reinforcing tool in a modified example of the second embodiment of the present invention. [Figure 14] FIG. 10 is a diagram schematically showing a method of attaching a reinforcing member in a modified example of the second embodiment of the present invention. [Figure 15] FIG. 10 is a diagram schematically showing another method of attaching a reinforcing member in a modified example of the second embodiment of the present invention. [Figure 16] FIG. 10 is a cross-sectional view showing another reinforcing structure of a deformed stud in a modified example of the second embodiment of the present invention. [Figure 17] FIG. 10 is a perspective view showing a reinforcing member according to a third embodiment of the present invention. [Figure 18] FIG. 18 is an enlarged cross-sectional view of a part of FIG. 17. [Figure 19] FIG. 10 is a perspective view schematically showing a method for attaching a reinforcing tool according to a third embodiment of the present invention. [Figure 20] FIG. 10 is a cross-sectional view showing a reinforcement structure for a deformed stud in accordance with a third embodiment of the present invention. [Figure 21] FIG. 10 is an explanatory diagram of a fixing means for a reinforcing element in a modified example of the third embodiment of the present invention. [Figure 22] FIG. 11 is a perspective view showing a reinforcing member according to a modified example of the third embodiment of the present invention. [Figure 23] FIG. 11 is a cross-sectional view showing a mounting structure for a reinforcing member according to a modified example of the third embodiment of the present invention. [Figure 24] FIG. 10 is a perspective view showing a reinforcing member according to a fourth embodiment of the present invention. [Figure 25] FIG. 10 is a perspective view showing a deformed stud in a fourth embodiment of the present invention. [Figure 26]FIG. 10 is a cross-sectional view showing a reinforcement structure for a deformed stud in accordance with a fourth embodiment of the present invention. [Figure 27] FIG. 10 is a perspective view schematically showing a method for attaching a reinforcing tool according to a fourth embodiment of the present invention. [Figure 28] FIG. 10 is a perspective view showing the unnecessary portion of the deformed stud. [Figure 29] FIG. 10 is a cross-sectional view showing a reinforcement structure for a deformed stud in embodiment 5 of the present invention. [Figure 30] FIG. 10 is a diagram showing a schematic diagram of a method for reinforcing a deformed stud in a fifth embodiment of the present invention. [Figure 31] FIG. 10 is a perspective view showing a reinforcement structure for a deformed stud in embodiment 5 of the present invention. [Figure 32] FIG. 10 is a diagram schematically showing a method of reinforcing a deformed stud in a modified example of the fifth embodiment of the present invention. [Figure 33] FIG. 10 is a perspective view showing a reinforcement structure for a deformed stud in a modified example of embodiment 5 of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals and description thereof will not be repeated.

[0020] <Basic structure> Fig. 1 is a cross-sectional view schematically showing the basic structure of an exterior wall 1 according to this embodiment. Arrow A1 in Fig. 1 indicates the outdoor direction, and arrow A2 indicates the width direction of the exterior wall 1. The same applies to the subsequent figures.

[0021] Referring to Figure 1, the exterior wall 1 includes a plurality of columns 11, studs 12 arranged between the columns 11, braces (shown by dashed lines) 13 spanning between the columns 11, a plate-like member (interior surface material) 21 such as gypsum board arranged on the indoor side of the studs 12, and an exterior wall panel 22 arranged on the outdoor side of the columns 11.

[0022] Studs 12 extend vertically, with their upper and lower ends restrained by runners (not shown). In this embodiment, studs 12 are C-shaped. Plate-like members 21 are fixed with screws 91 in surface contact with the indoor surface of stud 12 (surface portion 121, described below).

[0023] The exterior wall panel 22 integrally includes a panel frame 23 which is a rectangular frame body, a heat insulating material 24 filled in the panel frame 23, an exterior base 25 located on the outdoor side of the panel frame 23, and an exterior material 26 such as siding. The exterior wall panel 22 is attached to the pillar 11 by fixing the upper and lower ends of the panel frame 23 to the pillar 11 via fixing metal fittings (not shown).

[0024] As shown in Fig. 1, the positions of the studs 12 to which the plate-like members 21 are fixed and the positions of the braces 13 overlap each other in the inside-outside direction. This positional relationship between the studs 12 and the braces 13 is shown in Fig. 2. Note that the arrow A3 in Fig. 2 indicates the up-down direction (height direction). This also applies to the subsequent figures.

[0025] As shown in Figure 2, the stud 12 has a notch 31 to avoid interference with the brace 13. The notch 31 is provided only in the portion through which the brace 13 passes, i.e., in the portion that interferes with the brace 13, and is formed by partially cutting out the stud 12 from the back side (outdoor side) when viewed from the indoor side. Such a stud 12 will be referred to as a "deformed stud 12" below.

[0026] FIG. 3 shows an example structure of a profiled stud 12 having a notch 31. A side view of the profiled stud 12 is shown on the left side of the page, and a cross-sectional view of the general portion 32 and notch 31 is shown on the right side. The general portion 32 refers to the portion without the notch 31. The general portion 32 has a substantially C-shaped cross section and includes a surface portion 121 that is the mounting surface for the plate-like member 21, a pair of side portions 122, and a pair of lip portions 123 facing the surface portion 121. The general portion 32 has an opening 120a between the pair of lip portions 123. In this embodiment, a bent piece 124 bent toward the surface portion 121 is provided at the tip of the lip portion 123.

[0027] The cutout portion 31 of the profiled stud 12 differs from the general portion 32 in that it does not include the entire lip portion 123 or part of the pair of side portions 122. In other words, the cutout portion 31 has a substantially U-shaped cross section and includes the surface portion 121 and a pair of side portions (hereinafter referred to as "short side portions") 125 that are shorter than the side portions 122 of the general portion 32.

[0028] Assuming that the depth dimension (dimension in the inner and outer directions) of the general portion 32 is, for example, 40 to 50 mm, the depth dimension of the notched portion 31 is, for example, approximately 10 to 15 mm. The width dimension of the deformed stud 12 is approximately 60 to 70 mm. The notched portion 31 has a large opening 120b between a pair of short side portions 125.

[0029] Exterior walls equipped with such deformed studs 12 have lower fire resistance than exterior walls equipped with regular studs without the notches 31. This is because the second moment of area of ​​the notches 31 is small (see Figure 5(A)), and when this part is exposed to heat, thermal expansion causes significant deformation in the out-of-plane direction.

[0030] FIG. 4 is a diagram showing the typical heat resistance of an exterior wall 100 equipped with deformed studs 12 (without reinforcement). As shown in the left diagram of FIG. 4, deformed studs 12 with notches 31 at the top, bottom, and center were prepared. Plate-shaped components 21 were fixed to the deformed studs 12, and an indoor heating test was conducted on the exterior wall 100. In this case, as shown in the right diagram of FIG. 4, out-of-plane deformation resembling a "U" shape was observed at the notch 31 in the center (away from the runner). That is, out-of-plane deformation was observed, with the center of the deformed stud 12 protruding toward the indoor side, which is the heated side. This deformation was particularly evident in the deformed studs 12 located at the joints (vertical joints) of the plate-shaped components 21. This widened the vertical joints, promoting heat input from those areas and raising the temperature of the interior space (air layer) of the exterior wall 100, resulting in failure to achieve the desired heat resistance.

[0031] Therefore, in this embodiment, as shown in Figure 5(B), the deformed stud 12 is reinforced by attaching a reinforcing element 4 to the cutout 31. That is, the reinforcing structure of the deformed stud 12 is characterized by comprising a reinforcing element 4 that is arranged to close the opening 120b of the cutout 31 and makes the cutout 31 a closed cross section, and fixing means for fixing the reinforcing element 4 to the deformed stud 12.

[0032] The reinforcing structure of the deformed stud 12 will be described in detail below.

[0033] <First Embodiment> Fig. 6 is a perspective view showing the reinforcing device 4 according to embodiment 1. Fig. 7 is a cross-sectional view showing the reinforcing structure of the deformed stud 12 using the reinforcing device 4.

[0034] As shown in Figures 6 and 7, the reinforcement 4 is a metal member (metal fitting) with a substantially U-shaped cross section similar to that of the cutout 31. The reinforcement 4 includes a facing portion 41 disposed substantially parallel to the surface portion 121 of the cutout 31, and a pair of flanges 42 formed by bending both widthwise ends of the facing portion 41 substantially vertically (toward the indoor side) and in contact with or adjacent to the short side portions 125 of the cutout 31. The reinforcement 4 is formed by bending a single thin plate (steel plate) into a substantially U-shape. The plate thickness of the reinforcement 4 is preferably greater than that of the deformed stud 12.

[0035] The reinforcing element 4 is fitted inside the cutout 31, and the outer surfaces 42a of the pair of flanges 42 come into contact (surface contact) with the inner surfaces of the short side surfaces 125 of the cutout 31. As a result, the cutout 31 and the reinforcing element 4 form a square steel beam with a closed cross section. In this case, it is desirable that the tips of the pair of flanges 42 come into contact with the surface portions 121 of the cutout 31. This increases the unity between the reinforcing element 4 and the cutout 31. Note that although it is desirable that both the tips and the outer surfaces 42a of the flanges 42 come into contact with the cutout 31, a slight gap may be present.

[0036] In this embodiment, the reinforcement 4 is fixed (screwed) to the shaped stud 12 by a fastening member 51 such as a tapping screw. The fastening member 51 constitutes a fixing means for the reinforcement 4. The fastening member 51 fastens (connects) the short side portion 125 and the flange portion 42. Note that a pilot hole may be provided in the flange portion 42 at the location where the fastening member 51 is to be applied. The fastening member 51 may also be a bolt, in which case through holes may be provided in advance in the side portions 122, 125 of the shaped stud 12. The same applies to the following embodiments.

[0037] Fig. 8 is a perspective view that schematically shows a method for attaching the reinforcing element 4. Since the cutout portion 31 does not have a lip portion 123 like the general portion 32, as shown in Fig. 8, the reinforcing element 4 can be fitted into the opening 120b of the cutout portion 31 from the outdoor side.

[0038] As shown in Figure 8, it is desirable that the vertical dimension L2 of the reinforcing element 4 be slightly longer than the vertical length L1 of the cutout portion 31. In this case, alignment can be achieved, for example, by slightly tilting the reinforcing element 4 and first inserting the upper end portion into the upper general portion 31, and then shifting the reinforcing element 4 downward. When aligned, the upper end portion of the reinforcing element 4 is located within the general portion 31 above the cutout portion 31, and the lower end portion of the reinforcing element 4 is located within the general portion 31 below the cutout portion 31.

[0039] Figure 9 is a vertical cross-sectional view of a deformed stud 12 with a reinforcing element 4 attached. As shown in Figure 9, it is desirable that the fastening member 51 be applied not only to the short side surface portion 125 of the notched portion 31, but also to the side surface portions 122 of the upper and lower general portions 32 that sandwich the notched portion 31. This allows the reinforcing element 4 to be integrated with both the general portion 32 and the notched portion 31.

[0040] According to this embodiment, the cutout portion 31 has a closed cross section due to the reinforcing element 4 having an approximately U-shaped cross section, and since the reinforcing element 4 is positioned above and below the height range of the cutout portion 31, the cutout portion 31 can be appropriately reinforced.

[0041] Furthermore, as shown in Figure 7, the depth dimension of the reinforcing element 4 (the protruding length of the flange portion 42) is approximately the same as the depth dimension of the cutout portion 31 (the protruding length of the short side portion 125), so that the cutout portion 31 can be reinforced without interfering with the brace 13.

[0042] In addition, since the reinforcing element 4 is also fixed to the side portion 122 of the general portion 32 with the fastening member 51, it is possible to effectively prevent or suppress the central cutout portion 31 from deforming into a "U" shape toward the indoor side under heating conditions such as those shown in Figure 4.

[0043] <Embodiment 2> Fig. 10 is a perspective view showing a reinforcing device 4A according to embodiment 2 of the present invention. Fig. 11 is a cross-sectional view showing the reinforcing structure of a deformed stud 12 using the reinforcing device 4. Fig. 12 is a perspective view showing a schematic method of attaching the reinforcing device 4A. The basic configuration of the reinforcing device 4A in this embodiment is the same as that of the reinforcing device 4 in embodiment 1. Therefore, only the differences from the reinforcing device 4 in embodiment 1 will be described in detail.

[0044] The reinforcing element 4A has ears 43 at its upper and lower ends. The ears 43 extend from both widthwise ends of the facing portion 41 in the opposite direction (toward the exterior) of the flange portion 42. The ears 43 and flange portion 42 are provided flush with each other. The ears 43 are connected to the surface of the facing portion 41 (the exterior-facing surface) by spot welding or the like. The ears 43 form a connecting portion that is connected to the general portion 32 of the deformed stud 12.

[0045] 11 , in the attached state, the ears 43 are located within the general portion 32 and contact the inner surfaces of the side portions 122 of the general portion 32. The ears 43 are fixed to the side portions 122 of the general portion 32 by fastening members 52. According to this modification, the fastening members 52 can be fixed to the general portion 32 at the center position (in the inward-outward direction) of the side portions 122, which has the effect of improving the connectivity between the reinforcing element 4A and the general portion 32 and increasing the moment of inertia.

[0046] (Variation) 13, the ears 43 may be formed by processing the upper and lower ends of the facing portion 41. Specifically, the portions that will become the ears 43 may be opened along T-shaped cut lines 41c made in the upper and lower ends of the facing portion 41, and then press-processed so that the ears 43 are flush with the flange portion 42. In this case, the effort of spot welding can be eliminated, improving workability.

[0047] Figure 14 is a schematic diagram showing a method for attaching a reinforcing element 4B having ears 43 formed by press working. As shown in Figure 14, the vertical dimension L3 of the facing portion 41 of the reinforcing element 4B is approximately the same as the vertical length L1 of the cutout portion 31. Therefore, by making the horizontal dimension W2 of the reinforcing element 4B slightly larger than the horizontal dimension W1 of the deformed stud 12, the reinforcing element 4B can be fitted to the outside of the cutout portion 31, as shown in Figures 15 and 16.

[0048] <Third Embodiment> Fig. 17 is a perspective view showing a reinforcing tool 4C according to embodiment 3. Fig. 18 is a cross-sectional view showing an enlarged portion of Fig. 17. Fig. 19 is a perspective view showing a schematic method of attaching the reinforcing tool 4C. The basic configuration of the reinforcing tool 4A in this embodiment is similar to that of the reinforcing tool 4 in embodiment 1. Therefore, only the differences from the reinforcing tool 4 in embodiment 1 will be described in detail.

[0049] The reinforcing member 4C has a plurality of clips 44 as fixing means. The clips 44 are provided at intervals in the vertical direction within a range (height range of the notched portion 31) excluding the upper and lower ends of the reinforcing member 4C.

[0050] Clip 44 is fixed in advance to the outer surface of flange 42, and constitutes a clamping member that clamps short side surface portion 125 of cutout portion 31. Specifically, clip 44 is a metal piece that has opening 44a in the same direction as the protruding direction of flange 42, and has a pair of contact surfaces 44b that contact (come into tight contact with) the inner and outer surfaces of short side surface portion 125 when attached.

[0051] The reinforcing member 4C in this embodiment further includes protrusions 45 provided at the upper and lower ends of the facing portion 41. The protrusions 45 form connecting portions that are connected to the general portion 32.

[0052] The protruding portion 45 is formed, for example, by metal fittings having a hat-shaped cross section, and its central portion 45a is fixed in advance to the surface (the outdoor-facing surface) of the facing portion 41. Note that the protruding portion 45 may be fixed to the facing portion 41 by a fastening member 53 such as a tapping screw as shown in Fig. 20, or may be fixed to the facing portion 41 by welding or the like.

[0053] The protruding portion 45 has a pair of orthogonal portions 45b that are orthogonal to (intersect with) the central portion 45a, and a pair of bent pieces 45c formed by bending the tip portions of the orthogonal portions 45b outward. In the attached state, the pair of bent pieces 45c contact (are in surface contact with) the lip portion 123 of the general portion 32 and are fixed to the lip portion 123 by the fastening members 52. This allows the reinforcing device 4C to be fully fixed to the lip portion 123 of the general portion 32 by the fastening members 52.

[0054] Furthermore, because the clip 44 clamps the short side surface portion 125 of the cutout portion 31, it is not necessary to apply the fastening member 51 to the short side surface portion 125. Furthermore, when the bent piece 45c is fixed, the reinforcing element 4C is temporarily fastened to the short side surface portion 125, which improves the ease of application of the reinforcing element 4C.

[0055] 20, the folded piece 45c of the protruding portion 45 may be disposed outside the lip portion 123, or may be disposed inside the lip portion 123. The shape of the protruding portion 45 is not limited to a hat shape, and may be any shape as long as it has a portion that protrudes from the center of the width direction of the facing portion 41 in the opposite direction to the flange portion 42 and is fixed to the lip portion 123 of the general portion 32.

[0056] (Variation) Although clip 44 is welded to the outer surface of flange 42 of reinforcing device 4C in the above embodiment, clip 44 may be detachably attached to flange 42, as in clip 44A shown in Fig. 21. Clip 44A has a flattened, deformed S-shape, and integrally includes a clamping portion that clamps short side surface portion 125 of cutout portion 31 and a clamping portion that clamps flange 42.

[0057] Fig. 22 is a perspective view showing a reinforcing device 4D equipped with a clip 44A. Fig. 23 is a cross-sectional view showing the mounting structure of the reinforcing device 4D. In this modification, the clip 44A can also perform the function of temporary fastening.

[0058] <Fourth Embodiment> Fig. 24 is a perspective view showing a reinforcing device 4E according to embodiment 4. Fig. 25 is a perspective view showing a deformed stud 12 in embodiment 4. Fig. 26 is a cross-sectional view showing the reinforcing structure of the deformed stud 12 using the reinforcing device 4E. Fig. 27 is a perspective view showing a schematic method of attaching the reinforcing device 4E. The basic configuration of the reinforcing device 4E in this embodiment is similar to that of the reinforcing device 4 in embodiment 1. Therefore, only the differences from the reinforcing device 4 in embodiment 1 will be described in detail.

[0059] As shown in Fig. 24, the reinforcing member 4E has a plurality of downward-facing hook pieces 46 provided on the flange 42. The hook pieces 46 are formed, for example, by cutting and raising a portion of the flange 42. The hook pieces 46 are formed into an inverted L shape by press working or the like. At least one hook piece 46 is provided at each of the upper end, lower end, and center of each flange 42.

[0060] As shown in Figure 25, in this embodiment, a plurality of through holes 12h are provided in the short side surface portion 125 of the deformed stud 12. The through holes 12h are provided at positions corresponding to the latching pieces 46. The through holes 12h are provided not only in the short side surface portion 125 of the cutout portion 31, but also in the side surface portions 122 of the general portions 32 above and below the cutout portion 31. In this embodiment, the plurality of through holes 12h and the plurality of latching pieces 46 form a fixing means for fixing the reinforcement 4C to the deformed stud 12.

[0061] When attaching the reinforcing element 4E, the worker inserts the reinforcing element 4E into the deformed stud 12, then lifts the reinforcing element 4E upward, and then shifts the reinforcing element 4E downward so that the hook pieces 46 are inserted into the through holes 12h from above. This completes the installation of the reinforcing element 4E.

[0062] Therefore, according to this embodiment, the reinforcing element 4E can be fixed to the deformed stud 12 with a single touch, without the need for a separate fastening member, thereby improving workability.

[0063] <Fifth Embodiment> In the above-described first to fourth embodiments, the structure is such that the opening 120b of the cutout portion 31 is covered with the reinforcing member 4 (4A to 4E), thereby reinforcing the cutout portion 31. However, as shown in Fig. 28, the cutout portion 31 may be reinforced by utilizing an unnecessary portion (a portion to be removed) 39 that is generated when processing the cutout portion 31. In the fifth embodiment, a reinforcing structure for the cutout portion 31 in which the unnecessary portion 39 is used as a covering portion that covers the opening 120b of the cutout portion 31 will be described.

[0064] Figure 28 is a perspective view showing the unnecessary portion 39 of the deformed stud 12A. Figure 29 is a cross-sectional view showing the reinforcing structure of the deformed stud 12A according to embodiment 5. In the deformed stud 12 shown in embodiment 1 etc., the unnecessary portion 39 is cut away along the horizontal cutting lines shown by solid lines and the vertical cutting lines shown by imaginary lines in Figure 28. In this embodiment, the unnecessary portion 39 is bent inward along the vertical cutting lines.

[0065] Fig. 30(A) shows the state in which the unnecessary portion 39 is bent inward. Fig. 30(B) shows the state in which the covering portion 34 is formed by adjusting the shape of the unnecessary portion 39 by roll forming or the like.

[0066] 30(B), the covering portion 34 is configured by a pair of bent portions formed by inwardly bending the unnecessary portion 39. The covering portion 34 is provided integrally with the cutout portion 31.

[0067] The covering portion 34 includes a pair of left and right facing portions 341 facing the surface portion 121, and a pair of vertical portions 342 formed by bending the inner ends of the facing portions 341 approximately vertically (toward the indoor side). There is no gap between the pair of facing portions 341, and the pair of facing portions 341 close the opening 120b of the cutout portion 31. It is desirable that the pair of vertical portions 342 contact each other and that the tip portions of the vertical portions 342 contact the surface portion 121 of the cutout portion 31.

[0068] 30(B), (C), and 31, the connecting plate 4F is placed across the pair of facing portions 341, and fastening members 54 such as tapping screws are installed. This connects the left and right facing portions 341. The connecting plate 4F and fastening members 54 form a connecting means that connects the covering portion 34 (the pair of bent portions).

[0069] According to this embodiment, the unnecessary portion 39 of the deformed stud 12 is utilized to reinforce the notch portion 31, so the number of parts of the reinforcing tool can be reduced, and material costs can be reduced.

[0070] (Variation) As shown in Figures 32 and 33, it is also possible to reinforce the cutout portion 31 using only the unnecessary portion 39 of the deformed stud 12B, without using a connecting plate 4F. Specifically, as shown in Figure 32(B), by providing a step in one of the facing portions 341 and fitting the tip of the other facing portion 341 into this step, the connecting plate 4F can be made unnecessary. This reduces the risk of interference with the brace.

[0071] In this case, the fastening members 54 only need to be installed so as to penetrate the two overlapping facing portions 341, which also reduces the number of fastening members 54. Therefore, according to this modification, it is possible to improve ease of installation.

[0072] <Other> In the above embodiment, the deformed studs 12 installed in the exterior wall 1 have been described as an example, but the reinforcing structures of the respective embodiments can also be applied to studs installed in, for example, parting walls.

[0073] Furthermore, the reinforcement structure of each embodiment can be applied to any deformed stud that is not limited to a deformed stud 12 having a notch 31 at the interference portion with the brace 13, but is partially provided with a notch that cuts out a portion of the opposite side of the surface portion 121 where the face material is attached.

[0074] The above-described multiple embodiments and modifications can be combined as appropriate.

[0075] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0076] 1,100 Exterior wall, 4,4A,4B,4C,4D,4E Reinforcement, 4F Connecting plate, 12,12A Deformed stud, 12h Through hole, 31 Notch portion, 32 General portion, 34 Covering portion, 39 Unnecessary portion, 41,341 Facing portion, 42 Flange portion, 43 Ear portion, 44,44A Clip, 120a,120b Opening, 45 Protruding portion, 46 Latching piece, 51,52,53,54 Fastening member, 121 Surface portion, 122 Side portion, 123 Lip portion, 125 Short side portion.

Claims

1. A reinforcement structure for reinforcing a deformed stud having a notch portion with a substantially U-shaped cross section in a part of the vertical direction, a reinforcing member arranged to close an opening between a pair of side surfaces of the cutout portion, the reinforcing member forming the cutout portion as a closed cross section; and a fastening means for fastening the reinforcement to the profiled stud.

2. 2. A reinforcing structure for a deformed stud as described in claim 1, wherein the reinforcing element includes a facing portion arranged approximately parallel to the surface portion of the cutout portion, and a pair of flange portions formed by bending both widthwise ends of the facing portion so that the flange portions contact or are close to the side portions of the cutout portion.

3. 3. The reinforcement structure for a deformed stud according to claim 2, wherein the reinforcement member is fitted inside the notch portion, and the tip ends of the pair of flange portions contact the surface portion.

4. 4. A reinforcement structure for a deformed stud as described in claim 2 or 3, wherein the fixing means is constituted by a fastening member that fastens the flange portion and the side portion, or a clamping member that is provided on the flange portion and clamps the side portion.

5. 4. The reinforcement structure for a deformed stud according to claim 2, wherein the fixing means includes a through hole provided in the side portion and a hooking piece provided in the flange portion and hooked onto the through hole.

6. 4. The reinforcement structure for a deformed stud according to claim 2 or 3, wherein the reinforcement element further includes a connecting portion provided at the upper and lower ends of the facing portion and connected to the general portion of the deformed stud.

7. 7. A reinforcement structure for a deformed stud as described in claim 6, wherein the connecting portion is composed of ear portions extending from both widthwise ends of the facing portion in the opposite direction to the flange portion and fixed to the side portions of the general portion.

8. 7. The reinforcement structure for a deformed stud as described in claim 6, wherein the connecting portion is composed of a protruding portion that protrudes from the widthwise center of the facing portion in the opposite direction to the flange portion and is fixed to the lip portion of the general portion.

9. A reinforcement structure for reinforcing a deformed stud having a notch portion with a substantially U-shaped cross section in a part of the vertical direction, a pair of bent portions formed by bending the unnecessary portion at the cutout portion inward so as to close the opening of the cutout portion; A reinforcing structure for a deformed stud, comprising: a connecting means for connecting the pair of bent portions.

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