JP2012077572A - Bearing wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy-to-construct bearing wall with high strength.SOLUTION: A bearing wall 1 comprises a framework 2 which is provided with a lower frame 11, a plurality of vertical frames 12 erected on the lower frame 11 and an upper frame 13 horizontally provided on the upper ends of the vertical frames 12, and a structural face material 3 which is installed between the lower and upper frames 11 and 13. Each pair of vertical frames 12 is provided in such a manner that the structural face material 3 is sandwiched therebetween. The plurality of pairs of vertical frames 12 are erected at intervals in the longitudinal direction of the lower and upper frames 11 and 13. The structural face material 3 and the pair of vertical frames 12 are joined together by means of a nail K. A metal plate connector 4 makes the lower frame 11 and the vertical frame 12 joined together and makes the upper frame 13 and the vertical frame 12 joined together.

Description

  The present invention relates to a bearing wall used in a frame wall construction method.

  For example, Patent Document 1 discloses a technique in which a structural face material is provided inside a load bearing wall used in a frame wall construction method. 6A and 6B are diagrams showing a conventional bearing wall, in which FIG. 6A is a perspective view and FIG. 6B is a cross-sectional view taken along line III-III in FIG. FIG. 7 is an operation diagram of a conventional bearing wall.

  As shown in FIG. 6A, the conventional load-bearing wall 101 includes a frame 102 and a structural surface material 103 installed inside the frame 102. The frame 102 includes a lower frame 104, six vertical frames 105 erected on the lower frame 104, and an upper frame 106 provided horizontally on the upper end of the vertical frame 105.

  As shown in FIG. 6B, the vertical frames 105 (105 a to 105 f) are erected in pairs so as to sandwich the structural surface material 103, and predetermined in the longitudinal direction of the lower frame 104 and the upper frame 106. It is erected in three places with an interval of. The structural surface material 103 is sandwiched between the vertical frames 105a and 105b, the vertical frames 105c and 105d, and the vertical frames 105e and 105f, and is two-surface sheared by the nails K, respectively. Further, as shown in FIG. 7, the lower frame 104, the upper frame 106, and the vertical frame 105 are joined by a nail K.

  The conventional load bearing wall 101 having such a configuration can improve the shear strength because the pair of vertical frames 105 and the structural face material 103 are two-sided shear bonded via the nail K.

US Pat. No. 5,782,054

  For example, as shown in FIG. 7, when a horizontal force is applied to the upper frame 106 of the conventional load-bearing wall 101, a force is applied to the joint G1 between the lower frame 104 and the vertical frame 105e (105f) downward in the vertical direction. The force acts on the joint G2 between the lower frame 104 and the vertical frame 105a (105b) upward in the vertical direction. That is, the pulling force that the vertical frame 105a (105b) tries to lift up acts on the lower frame 104 at the joint G2.

  Since the shear strength of the load-bearing wall 101 is improved by the two-surface shear joining, a large pulling force acts on the joint portion G2 because the joint strength between the structural face material 103 and the vertical frame 105 is strong. For this reason, there exists a problem that the junction part G2 is easy to be destroyed.

  In order to solve this problem, it is conceivable to install a metal plate at the joint portion G2 between the lower frame 104 and the vertical frame 105, and drive and join a plurality of nails. However, in order to be able to withstand the above-mentioned pulling force, several tens of nails have to be driven, and there is a problem that it takes a lot of work. Further, when many nails are driven into a narrow region, the frame material may be cracked, resulting in a problem that the bonding strength is lowered.

  The present invention has been made in view of the above problems, and an object thereof is to provide a bearing wall that is easy to construct and has high strength.

  In order to solve the above problems, the present invention provides a frame comprising a lower frame, a plurality of vertical frames standing on the lower frame, and an upper frame horizontally provided on the upper end of the vertical frame, and the lower frame. A structural wall provided between the upper frame and the structural frame, wherein the vertical frames are provided one by one with the structural surface material sandwiched therebetween, and the longitudinal lengths of the lower frame and the upper frame A plurality of the surface members for construction are provided opposite to each other at intervals in the direction, and the structural face material and the pair of vertical frames are joined by two-surface shearing by a fixing member, and the lower frame, the vertical frame, the upper frame, and the The vertical frame is joined by a metal plate connector.

  According to this configuration, the vertical frame and the structural face material are two-surface shear bonded, and the lower frame and the upper frame are bonded by the vertical frame and the metal plate connector, so that the bonding strength can be increased. If it is a metal plate connector, high intensity | strength can be expressed even if it is a narrow area | region. Moreover, since it is only necessary to press-fit the metal plate connector into the joint, the construction is easy.

  Moreover, it is preferable that the said metal plate connector is continuously joined ranging over the joint line of the said lower frame and the said vertical frame, and the extension line of the side edge of the said vertical frame in the said lower frame. Moreover, it is preferable that the said metal plate connector is continuously joined ranging over the joint line of the said upper frame and the said vertical frame, and the extension line of the side edge of the said vertical frame in the said upper frame.

  According to such a configuration, the bonding strength can be further increased by effectively increasing the bonding area between the frame and the metal plate connector.

  According to the load-bearing wall according to the present invention, construction is easy and high strength can be expressed.

It is a perspective view (partially fractured) which shows the bearing wall concerning this embodiment. (A) is II sectional drawing of FIG. 1, (b) is II-II sectional drawing of FIG. It is a perspective view which shows a metal plate connector. It is a principal part enlarged front view which shows a 1st modification. It is a principal part enlarged front view which shows a 2nd modification. It is a figure which shows the conventional bearing wall, Comprising: (a) is a perspective view, (b) is III-III sectional drawing of (a). It is an effect | action figure of the conventional bearing wall.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the load-bearing wall 1 according to this embodiment is used for a wooden house constructed by a framed wall construction method. In particular, in this embodiment, the case where the load-bearing wall 1 is used as the inner wall of a wooden house is illustrated. The vertical and horizontal directions in the description follow the arrows in FIG.

  As shown in FIG. 1, the bearing wall 1 is a wall erected on the floor F, and includes a frame 2, a structural surface material 3 installed inside the frame 2, a metal plate connector 4, and a bottom plate. Mainly includes a main plate 5 and an outlet box 6.

  The frame assembly 2 has a lower frame 11, a plurality of vertical frames 12 standing on the lower frame 11, and an upper frame 13 horizontally provided on the vertical frame 12, and is formed in a frame shape.

  The lower frame 11 is wood that forms the lower part of the frame 2, and is joined to the floor F by nails (fixing members) K. In this embodiment, the lower frame 11 uses, for example, 204 materials (89 mm × 38 mm) used in the frame wall construction method.

  As shown in FIGS. 1 and 2, the vertical frame 12 is wood erected on the lower frame 11, and in this embodiment, six (12 a to 12 f) are erected. In the present embodiment, for example, 204 material is used for the vertical frame 12. The vertical frames 12 a and 12 b are erected so as to sandwich the front surface and the rear surface of the structural face material 3 at the left end of the structural face material 3. The vertical frames 12a and 12b sandwich the structural surface material 3 by so-called flat use so that the wide surfaces face each other.

  Similar to the vertical frames 12 a and 12 b, the vertical frames 12 c and 12 d are at the center of the structural surface material 3, and the vertical frames 12 e and 12 f are at the right end of the structural surface material 3, and the front and rear surfaces of the structural surface material 3. It is erected so as to sandwich it.

  The upper frame 13 is wood that constitutes the upper part of the frame 2, and is joined to the vertical frame 12 by nails K. In the present embodiment, for example, 204 material is used for the upper frame 13.

  The structural face material 3 is a plywood interposed between the opposing vertical frames 12. The thickness of the structural face material 3 is, for example, 12 mm in this embodiment. The height of the structural face material 3 is substantially equal to the height of the vertical frame 12. As shown in FIG. 2, the structural face material 3 is sandwiched by opposing vertical frames 12 a and 12 b, vertical frames 12 c and 12 d, and vertical frames 12 e and 12 f, and is two-surface sheared by nails K. In this embodiment, the structural face material 3 is alternately joined by the nails K from the front side and the rear side of the structural face material 3 as shown in FIG.

  As shown in FIGS. 1 to 3, the metal plate connector 4 is a plate-like metal member having a rectangular shape in plan view, and is formed by joining the lower frame 11, the vertical frame 12, the upper frame 13, and the vertical frame 12. Yes. In the present embodiment, a total of 12 metal plate connectors 4 are used at the upper and lower ends of each vertical frame 12 (12a to 12f).

  As shown in FIG. 3, the metal plate connector 4 includes a substrate 21 and a claw portion 22 cut and raised from the substrate 21. The claw portion 22 has a triangular shape and is erected vertically with respect to the substrate 21. The metal plate connector 4 is press-fitted into each joint portion formed by side surfaces of two members brought into contact with each other by a pressing device or the like, and joins the two members by causing the claw portion 22 to bite into the joint portion. The substrate 21 has a thickness of about 1 to 2 mm, for example.

  As shown in FIGS. 1 and 2, the base plate 5 is joined to the front side and the rear side of the frame 2 by nails (not shown). The base plate 5 is fastened to the lower frame 11, the vertical frame 12, and the upper frame 13. The base plate 5 is used as a base for an interior material or the like using, for example, a gypsum board.

  As shown in FIGS. 1 and 2, the outlet box 6 is installed inside the load-bearing wall 1. In this embodiment, the outlet box 6 is installed in the lower part of the space surrounded by the lower frame 11, the vertical frames 12 a and 12 c, the upper frame 13, the structural face material 3 and the base plate 5.

  According to the load-bearing wall 1 according to the present embodiment described above, the vertical frame 12 (12a to 12f) and the structural face material 3 are two-surface sheared by the nail K, and the lower frame 11 and the upper frame 13 are connected. Since it joins via the vertical frame 12 and the metal plate connector 4, respectively, joining strength can be raised. That is, for example, even if a horizontal force is applied from the left side of the upper frame 13, the vertical frames 12 a and 12 b can be prevented from being lifted with respect to the lower frame 11. Thereby, high intensity | strength can be expressed.

  Further, by using the metal plate connector 4, the lower frame 11 and the vertical frame 12 and the upper frame 13 and the vertical frame 12 can be firmly joined even in a narrow region. Moreover, according to the metal plate connector 4, since it is only necessary to press-fit into the joint portion, the construction is easy. Moreover, since the board | substrate 21 of the metal plate connector 4 is a thin member as 1-2 mm, it does not become a hindrance when sticking face materials, such as the baseplate 5. FIG. Further, since the plurality of claw portions 22 are press-fitted at the same time, the frame 2 is hardly cracked.

  In the present embodiment, the thickness of the structural face material 3 is set to 12 mm, and the vertical frame 12 of 204 materials is used in a flat manner, so that the sum of the thicknesses of the vertical frames 12a and 12b and the structural face material 3 is approximately. 88 mm. Thereby, since the bearing wall 1 becomes the thickness equivalent to the inner wall of a common frame wall construction method, the freedom degree of design is high.

  In addition, by installing the outlet box 6 in the space formed in the load bearing wall 1, the space in the load bearing wall 1 can be used effectively. Moreover, since the bearing wall 1 has a symmetrical structure on the front side and the rear side, the degree of freedom in design is high.

<First modification>
Next, a first modification of the present invention will be described. FIG. 4 is an enlarged front view of a main part showing a first modification of the present invention. The first modification differs from the above-described embodiment in the method for joining the metal plate connector 4A. Since other parts are the same as those in the above-described embodiment, detailed description of the common parts is omitted.

  The metal plate connector 4A according to the first modification has a larger shape than the metal plate connector 4 used in the above-described embodiment. Here, a joint line between the vertical frame 12a and the lower frame 11 is a joint line P1, an extension line of the side edge R1 of the vertical frame 12a passing through the lower frame 11 is an extension line Q1, and an extension line of the side edge R2 is an extension line. Let Q2.

  The metal plate connector 4 </ b> A has a first joint region 31 that is L-shaped in front view and press-fitted into the frame 2, and a non-joint region 32 that is rectangular in front view and is not press-fitted into the frame 2. Each junction region is shown surrounded by a two-dot chain line in FIG. The first joining region 31 is joined continuously over the joint line P1 and over the extension line Q1.

  According to the first modification, since the joining is continuously performed across the joint line P1 and the extension line Q1, the joining region (area) of the metal plate connector 4A is effectively increased as compared with the above-described embodiment. can do. Thereby, joint strength can be raised more. Further, according to the first modification, the non-joining region 32 is generated, but the joining region can be effectively enlarged without cutting the metal plate connector 4A. Moreover, since the non-joining area | region 32 is provided with the function as a bracing of the 1st joining area | region 31 which exhibits L shape, joining strength can further be raised by suppressing a deformation | transformation of the metal plate connector 4A.

  In the first modification, the first joining region 31 may be extended and joined so as to straddle the extension line Q2.

<Second modification>
Next, a second modification of the present invention will be described. FIG. 5 is an enlarged front view of an essential part showing a second modification of the present invention. The second modification is different from the above-described embodiment in the method of joining the metal plate connector 4B. Since other parts are the same as those in the above-described embodiment, detailed description of the common parts is omitted.

  The metal plate connector 4B according to the second modification has a larger shape than the metal plate connector 4A used in the first modification described above. Here, a joint line between the vertical frame 12a and the upper frame 13 is a joint line P2, an extension line of the side edge R1 of the vertical frame 12a passing through the upper frame 13 is an extension line Q3, and an extension line of the side edge R2 is an extension line. Q4.

  The metal plate connector 4 </ b> B has a second joining region 41 that is T-shaped in front view and press-fitted into the frame 2, and non-joining regions 42 and 42 that are rectangular in front view and are not press-fitted into the frame 2. Each junction region is shown surrounded by a two-dot chain line in FIG. The second joining region 41 is continuously joined over the joint line P2 and over the extension line Q3 and the extension line Q4.

  According to the second modified example, since the joint line P2 and the extension lines Q3 and Q4 are continuously joined across the joint line P2, the joining region (area) of the metal plate connector 4B is effectively reduced as compared with the above-described embodiment. Can be bigger. Thereby, joint strength can be raised more. Moreover, according to the 2nd modification, although the non-joining area | regions 42 and 42 will generate | occur | produce, a joining area | region can be enlarged effectively, without cutting the metal plate connector 4B. Moreover, since the non-joining area | regions 42 and 42 are provided with the function as a bracing of the 2nd joining area | region 41 which exhibits T shape, joining strength can further be improved by suppressing a deformation | transformation of the metal plate connector 4B.

  In addition, you may join in the aspect of a 1st modification using the metal plate connector 4A for the junction part of the vertical frame 12a and the upper frame 13. FIG.

  Although the embodiments of the present invention have been described above, design changes can be made as appropriate without departing from the spirit of the present invention. For example, the bonding strength of the bonding portion can be further increased by sticking an adhesive, an adhesive tape, or the like to the claw portion 22 of the metal plate connector 4. The dimensions of each element such as the frame 2 and the structural face material 3 are merely examples and are not limited.

  Further, although six vertical frames 12 are used in the present embodiment, the number of the vertical frames 12 is not limited. Moreover, although the case where the load-bearing wall 1 was used as an inner wall was illustrated, you may use it for an outer wall. In the present embodiment, a metal plate connector having a rectangular shape in front view is used, but a circular, elliptical, or other rectangular shape may be used. Moreover, you may use metal plate connectors, such as L shape or T shape, seeing from the front. Further, in the present embodiment, the vertical frame 12 and the structural face material 3 are joined by the nails K from both sides of the front surface and the rear surface, but may be joined only from one side.

DESCRIPTION OF SYMBOLS 1 Bearing wall 2 Frame 3 Structural surface material 4 Metal plate connector 5 Ground plate 6 Outlet box 11 Lower frame 12 Vertical frame 13 Upper frame 21 Substrate 22 Claw part 31 First joining area 32 Non-joining area 41 Second joining area 42 Non Joint area K Nail F Floor P1 Joint line P2 Joint line Q1 Extension line Q2 Extension line Q3 Extension line Q4 Extension line R1 Side edge R2 Side edge

Claims (3)

A frame structure including a lower frame, a plurality of vertical frames standing on the lower frame, and an upper frame horizontally installed on the upper end of the vertical frame, and a structure installed between the lower frame and the upper frame A bearing wall having a surface material,
The vertical frames are provided in pairs with the structural face material in between, and a plurality of the vertical frames are provided at intervals in the longitudinal direction of the lower frame and the upper frame,
The structural face material and the pair of vertical frames are two-sided shear bonded by a fixing member,
The bearing wall, wherein the lower frame and the vertical frame, and the upper frame and the vertical frame are joined by a metal plate connector. The metal plate connector is
2. The yield strength according to claim 1, wherein the joint line is continuously joined across a joint line between the lower frame and the vertical frame and an extension line of a side edge of the vertical frame in the lower frame. wall. The metal plate connector is
3. The joint line between the upper frame and the vertical frame and the extension line of the side edge of the vertical frame in the upper frame are continuously joined. Bearing wall as described in.

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