Support member, support structure and exterior wall structure

Abstract

A support member (6) is a member for supporting a first outer wall surface material (3), and comprises a support fixed portion (61), a support extended portion (62), and an end surface supporting portion (63). The support fixed portion (61) is fixed to a second surface (212) of a wall base material (21) that is provided so as to surround an opening portion (1A), the second surface (212) being positioned further toward an outdoor (OD) side than a first surface (211) that is adjacent to the opening portion (1A). The support extended portion (62) extends toward the opening portion (1A) side, from the support fixed portion (61) to a region facing the first surface (211), thereby supporting the first outer wall surface material (3) from an indoor (ID) side. The end surface supporting portion (63) has an abutting surface (631) which extends toward the outdoor (OD) side from the support extended portion (62), and which abuts one end surface (31) of the first outer wall surface material (3) on the opening portion (1A) side thereof, thereby supporting said one end surface (31).

Description

[Technical Field]

[0001] The present invention relates to a support member, a support structure, and an exterior wall structure. [Background technology]

[0002] A known exterior wall structure for a building is one in which fittings such as window sashes that cover openings connecting the indoors and outdoors are positioned recessed from the exterior wall surface material toward the interior. In such an exterior wall structure, the shadows cast around the fittings emphasize the thickness of the exterior wall surface material, giving the building a sense of dignity and luxury.

[0003] In this type of exterior wall structure, a wall base material provided to surround the opening has a first surface adjacent to the opening and facing the outdoors, and a second surface located on the opposite side of the first surface from the opening and closer to the outdoors than the first surface. A fixture is attached to the first surface of the wall base material, and an exterior wall surface material is supported along the second surface of the wall base material. An exterior wall structure equipped with a support member for supporting such an exterior wall surface material is disclosed in, for example, Patent Document 1.

[0004] In the exterior wall structure disclosed in Patent Document 1, the locking members that constitute the support members for supporting the exterior wall facing material (exterior wall material) are fixed to a water-stopping member attached to the second surface (the exterior surface of the furring strip) to prevent water from entering the first surface (the exterior surface of the frame member) from the exterior side. In this state, the locking members support the exterior wall facing material so that a gap is formed between the end face of the exterior wall facing material on the opening side and the fixture (window sash). A decorative member is placed in the gap between the exterior wall facing material and the fixture so that it protrudes further outdoors than the exterior wall facing material.

[0005] If a protrusion such as a decorative member that protrudes outside beyond the exterior wall surface material exists between the exterior wall surface material and the fixture, the appearance of the exterior wall structure will be impaired. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-37804 Summary of the Invention

[0007] The present invention has been made in consideration of these circumstances, and its purpose is to provide a support member and support structure for supporting an exterior wall surface material so as to cover the first surface of a wall base material without using a decorative member, as well as to provide an exterior wall structure.

[0008] A support member according to one aspect of the present invention is a member for supporting an exterior wall surface material on an exterior wall substrate that includes a wall base material that is arranged to surround a side-facing opening that connects indoors and outdoors, the wall base material including a first surface that is adjacent to the opening and faces the outdoors, and a second surface that is located on the opposite side of the first surface from the opening and is positioned outdoors relative to the first surface, and a fitting that is attached to the wall base material so as to cover the opening, and that has an attachment portion attached to the first surface in a state where it is overlapped on the first surface from the outdoors side. This support member includes a support fixing portion that is fixed to the second surface, a support extension portion that extends from the support fixing portion toward the opening to a region facing the first surface and supports the exterior wall surface material from the indoor side, and an end face support portion that extends from the support extension portion toward the outdoors and has an abutting surface that abuts against one end face of the exterior wall surface material on the opening side to support the one end face. a positioning portion for positioning the support fixing portion at a fixed position on the second surface by engaging with an engaging portion provided on the second surface of the wall base material; Equipped with.

[0009] A support structure according to another aspect of the present invention includes the support member described above and a restricting member attached to the fitting and configured to restrict water from entering the first surface from the exterior side through a gap between the fitting and the exterior wall surface material. The restricting member extends from the fitting to the exterior side and has a contact surface that contacts the end face support portion of the support member from the opening side.

[0010] An exterior wall structure according to another aspect of the present invention is an exterior wall structure for a building. This exterior wall structure includes a wall base material that is arranged to surround a side-facing opening that connects indoors and outdoors and includes a first surface that is adjacent to the opening and faces the outdoors, and a second surface that is arranged on the opposite side of the first surface from the opening and is positioned closer to the outdoors than the first surface, a fitting that is attached to the wall base material so as to cover the opening and has an attachment portion that is attached to the first surface while being overlapped on the first surface from the outdoors side, an exterior wall surface material that is provided for the wall base material and the fitting, and the support member described above that supports the exterior wall surface material so as to cover the attachment portion of the fitting from the outdoors side.

[0011] The objects, features and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a side cross-sectional view showing an exterior wall structure to which a support member and a support structure according to an embodiment of the present invention are applied. [Figure 2] FIG. [Figure 3] FIG. 10 is a perspective view showing the construction procedure for the exterior wall structure, showing the state in which the support member has been attached to the second surface of the wall base material. [Figure 4] FIG. 10 is a perspective view showing the construction procedure for the exterior wall structure, illustrating the state in which the first exterior wall surface material has been placed on the support member. [Figure 5] This is an oblique view showing the construction procedure for an exterior wall structure, and shows the state in which an exterior wall fastener for installing a second exterior wall surface material is attached to the first exterior wall surface material on the side opposite the opening of the first exterior wall surface material. [Figure 6] FIG. 10 is a side cross-sectional view showing an exterior wall structure to which a support member and a support structure according to a modified embodiment are applied. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A support member and a support structure according to an embodiment of the present invention will now be described with reference to the drawings. The support member and the support structure according to the present embodiment are applied to the exterior wall structure of a building.

[0014] [Exterior wall structure] As shown in Figures 1 and 2, the exterior wall structure 1 comprises an exterior wall base 2, a first exterior wall surface material 3 and a second exterior wall surface material 4 provided on the exterior wall base 2, and a support structure 5 for supporting the first exterior wall surface material 3 and the second exterior wall surface material 4.

[0015] The exterior wall base 2 is a structure provided to surround an opening 1A that connects the indoor ID and the outdoor OD. The opening edge of the opening 1A is formed, for example, in a rectangular shape. In the rectangular opening 1A, the upper and lower edges of the opening extend horizontally in a direction perpendicular to the direction from the indoor ID to the outdoor OD, and the opening side edges extend in the up-down direction (vertical direction). Note that in Figures 1 and 2, only the exterior wall base 2 corresponding to the upper edge of the rectangular opening 1A is shown, and the exterior wall base corresponding to the lower and side edges of the opening are omitted. The exterior wall base 2 includes a wall base material 21, a base board 22, a fitting 23, and a waterproof sheet 24.

[0016] The wall base material 21 is a base material provided to surround the opening 1A. The wall base material 21 includes a first surface 211 adjacent to the opening 1A and facing the outdoor OD side, and a second surface 212 provided on the opposite side of the first surface 211 from the opening 1A and positioned closer to the outdoor OD than the first surface 211. In the wall base material 21, an edge 211A on the opening 1A side of the first surface 211 extends along the corresponding opening edge of the opening 1A. In addition, in the wall base material 21, an edge 212A on the opening 1A side of the second surface 212 extends along the corresponding opening edge of the opening 1A at a position closer to the outdoor OD side and more distant from the opening 1A than the edge 211A on the opening 1A side of the first surface 211. For example, in the case of the wall base material 21 of the exterior wall base 2 corresponding to the upper edge of the opening 1A, the edge 211A of the first surface 211 and the edge 212A of the second surface 212 each extend along the upper edge of the opening 1A.

[0017] The base board 22 is made of, for example, plywood, and is attached to the second surface 212 of the wall base material 21 so as to cover the second surface 212 from the outdoor (OD) side. The base board 22 is attached to the second surface 212 so as not to extend toward the opening 1A side to the area opposite the first surface 211. In the example of FIGS. 1 and 2 , the base board 22 is attached to the second surface 212 so that the position of the end face of the base board 22 on the opening 1A side coincides with the position of the edge 212A of the second surface 212 on the opening 1A side.

[0018] The fitting 23 is formed of, for example, a window sash, and is attached to the wall base material 21 so as to cover the opening 1A. The fitting 23 has an attachment portion 231, and is attached to the first surface 211 with the attachment portion 231 overlapping the first surface 211 from the outdoor (OD) side.

[0019] The waterproof sheet 24 is a sheet for preventing water from seeping into the second surface 212 of the wall base material 21 from the outdoor OD side through the base board 22. The waterproof sheet 24 is attached to the second surface 212 so as to cover the base board 22 from the outdoor OD side. The waterproof sheet 24 is attached to the second surface 212 so as to extend toward the opening 1A up to the area facing the first surface 211. A waterproof tape 241 is applied so as to straddle the portion of the waterproof sheet 24 that extends to the area facing the first surface 211 and the attached portion 231 of the fitting 23.

[0020] The first exterior wall surface material 3 and the second exterior wall surface material 4 are plate materials that form the exterior wall surface of a building. Typically, exterior wall surface materials have a specified size and are attached to an installation area set on the building as an area corresponding to the specified size. However, if a door or window 23 is present in the installation area, a smaller exterior wall surface material must be prepared to fit the size of the outer area of ​​the door or window 23 in the installation area and supported on the building. The "small exterior wall surface material" corresponds to the first exterior wall surface material 3. The first exterior wall surface material 3 is arranged so as to face the first surface 211 of the wall base material 21 from the outdoor (OD) side. The second exterior wall surface material 4 is arranged so as to face the base board 22, which is provided to cover the second surface 212 of the wall base material 21, on the opposite side of the opening 1A of the first exterior wall surface material 3, from the outdoor (OD) side. In this embodiment, the first exterior wall surface material 3 is formed so that the length L3 from one end face 31 on the opening 1A side to the other end face 32 opposite to the one end face 31 is approximately the same as the length from the edge 211A on the opening 1A side of the first face 211 to the edge 212A on the opening 1A side of the second face 212. In addition, a groove 41 is formed at the end of the second exterior wall surface material 4 on the opening 1A side. The second exterior wall surface material 4 is arranged on the side of the first exterior wall surface material 3 opposite the opening 1A so that, with an exterior wall fastener 9 described below attached to the other end face 32 of the first exterior wall surface material 3, the protrusion 92 of the exterior wall fastener 9 is inserted into the groove 41.

[0021] The support structure 5 is a structure for supporting the first exterior wall surface material 3 and the second exterior wall surface material 4. The support structure 5 includes a support member 6, a restricting member 7, a support base material 8, and an exterior wall fastener 9.

[0022] The support member 6 is a member for supporting the first exterior wall surface material 3 against the exterior wall base 2 so as to cover the attached portion 231 of the fitting 23 from the outdoor (OD) side. As shown in Fig. 2, a plurality of support members 6 are provided at predetermined intervals in a direction along the edge 211A of the first surface 211 of the wall base material 21 on the opening 1A side and the edge 212A of the second surface 212 on the opening 1A side. The support member 6 has a support fixing portion 61, a support extension portion 62, and an end face support portion 63.

[0023] The support fixing portion 61 is a portion of the support member 6 that is fixed to the second surface 212 of the wall base material 21 via the base board 22 and the waterproof sheet 24. The support extension portion 62 is a portion of the support member 6 that extends from the support fixing portion 61 toward the opening 1A side to an area facing the first surface 211 of the wall base material 21, thereby supporting the first exterior wall surface material 3 from the indoor ID side. The end surface support portion 63 is a portion of the support member 6 that extends from the support extension portion 62 toward the outdoor OD side and supports one end surface 31 of the first exterior wall surface material 3 that faces the opening 1A side. The end surface support portion 63 has an abutment surface 631 that abuts against one end surface 31 of the first exterior wall surface material 3 that faces the opening 1A side.

[0024] The support fixing portion 61 is fixed to the second surface 212 via the base board 22 and the waterproof sheet 24 by screw members SC or the like so that the position of a boundary edge 611 between the support extending portion 62, which is the edge of the support fixing portion 61 on the opening 1A side, substantially coincides with the position of an edge 212A on the opening 1A side of the second surface 212 of the wall base material 21. In addition, the end surface support portion 63 extends from an end 621 of the support extending portion 62 on the opening 1A side to the outdoor OD side.

[0025] In the support member 6 configured as described above, an opposite surface 632 of the end face support portion 63 opposite the abutment surface 631 is disposed at a position closest to the opening 1A. The support extension portion 62 has a length such that, when the support fixing portion 61 is fixed at a predetermined fixed position on the second surface 212 of the wall base material 21, the opposite surface 632 of the end face support portion 63 from the abutment surface 631 contacts a predetermined set surface of the fitting 23. In other words, the length L1 from the fixed end 612 opposite the boundary end 611 of the support fixing portion 61 to the opposite surface 632 of the end face support portion 63 is set to a length such that the opposite surface 632 of the end face support portion 63 contacts a predetermined set surface of the fitting 23. In this embodiment, the predetermined set surface of the fitting 23 corresponds to a contact surface 721 of a restricting member 7 (described later) attached to the fitting 23.

[0026] In other words, the support extension portion 62 has a length such that the opposite surface 632 of the end face support portion 63 contacts the contact surface 721 of the restricting member 7 when the support fixing portion 61 is fixed to a predetermined fixing position on the second surface 212 of the wall base material 21. In this case, when the support fixing portion 61 of the support member 6 is fixed to the second surface 212, the support extension portion 62 extends between the edge 211A on the opening 1A side of the first surface 211 and the edge 212A on the opening 1A side of the second surface 212 so that no gap is formed between the restricting member 7 attached to the fitting 23 and the end face support portion 63. As a result, the support member 6 can support the first exterior wall surface material 3 so as to cover the entire first surface 211 from the outdoor (OD) side by the support extension portion 62 and the end face support portion 63 while preventing the formation of a gap between the restricting member 7 attached to the fitting 23 and the end face support portion 63. Therefore, the first exterior wall surface material 3 can be supported by the support member 6 so as to cover the first surface 211 of the wall base material 21, without the need for any protruding object such as a decorative member between the restricting member 7 attached to the fitting 23 and the first exterior wall surface material 3. Moreover, the support member 6 can appropriately support the first exterior wall surface material 3 so that the thickness of the first exterior wall surface material 3 can be effectively emphasized by the shadow created around the fitting 23 to which the restricting member 7 is attached.

[0027] The first exterior wall surface material 3 supported by the support member 6 is fixed to the support member 6 by being adhered to the support member 6 with an adhesive.

[0028] Furthermore, in the support member 6, the length extending from the support extension portion 62 of the end support portion 63 toward the outdoor OD side is set to a length that can restrict extension from the first exterior wall surface material 3 toward the outdoor OD side when the end support portion 63 supports one end face 31 of the first exterior wall surface material 3 on the opening 1A side. In this embodiment, the length extending from the support extension portion 62 of the end support portion 63 toward the outdoor OD side is set to be equal to or less than the thickness direction dimension of one end face 31 of the first exterior wall surface material 3 on the opening 1A side. This restricts the end support portion 63 of the support member 6 from extending toward the outdoor OD side beyond the first exterior wall surface material 3 between the restricting member 7 attached to the door / window 23 and the first exterior wall surface material 3. Therefore, the support member 6 can appropriately support the first exterior wall surface material 3 so that the thickness of the first exterior wall surface material 3 can be more effectively emphasized by the shadow created around the door / window 23.

[0029] Furthermore, in this embodiment, in the support member 6, the length L2 from the fixed end 612, which is the end opposite to the end face support portion 63 of the support fixing portion 61, to the abutment surface 631 of the end face support portion 63 is set to be longer than the length L3 from the one end face 31 to the other end face 32 of the first exterior wall surface material 3. In this case, even if it is necessary to support a first exterior wall surface material 3 formed so that the length L3 from the one end face 31 to the other end face 32 of the first exterior wall surface material 3 is approximately the same as the length from the edge 211A of the first surface 211 on the opening 1A side to the edge 212A of the second surface 212 on the opening 1A side, the support member 6 can support the first exterior wall surface material 3 by the support extension portion 62 and the end face support portion 63 with the support fixing portion 61 fixed to the second surface 212 so as to cover the entire first surface 211 from the outdoor (OD) side.

[0030] 1 and 2, the support member 6 further has a positioning portion 64 extending from the fixed end 612 of the support fixing portion 61 toward the indoor ID. The positioning portion 64 is a portion of the support member 6 that engages with the interlocking portion 81 of the support base material 8. The support base material 8 is a member that is attached to the second surface 212 of the wall base material 21 via the base board 22 and the waterproof sheet 24 so as to be interposed between the second surface 212 of the wall base material 21 and the support member 6. The support base material 8 has the interlocking portion 81 on the end surface of the support base material 8 opposite to the opening 1A side. The positioning portion 64 of the support member 6 is configured to be able to position the fixed position of the support fixing portion 61 relative to the second surface 212 by engaging with the interlocking portion 81 of the support base material 8.

[0031] In this embodiment, the support member 6 is positioned so that the positioning portion 64 of the support member 6 engages with the engaged portion 81 of the support base material 8. This allows the support fixing portion 61 to be fixed to the second surface 212 with the fixing position of the support fixing portion 61 positioned relative to the second surface 212 so that the opposite surface 632 of the end face support portion 63 of the support member 6 contacts the contact surface 721 of the restricting member 7. Therefore, the support member 6 can support the first exterior wall surface material 3 so as to cover the entire first surface 211 of the wall base material 21 from the outdoor (OD) side, while more reliably restricting the formation of a gap between the end face support portion 63 and the restricting member 7. As a result, the support member 6 can appropriately support the first exterior wall surface material 3 so that the thickness of the first exterior wall surface material 3 can be effectively emphasized by the shadow cast around the fitting 23 to which the restricting member 7 is attached.

[0032] In this embodiment, the support fixing portion 61, the support extension portion 62, the end surface support portion 63, and the positioning portion 64 of the support member 6 all have the same thickness. The support member 6 is made of a metal plate that has been bent. Specifically, the support member 6 is made of a metal plate that has been bent at a portion corresponding to the boundary between the support extension portion 62 and the end surface support portion 63 and at a portion corresponding to the boundary between the support extension portion 62 and the positioning portion 64. In this case, the support member 6 that supports the end surface 31 of the first exterior wall surface material 3 on the opening 1A side and has the end surface support portion 63 with a small thickness can be realized by the simple technique of bending the metal plate. By reducing the thickness of the end surface support portion 63, the first exterior wall surface material 3 can be supported with the end surface 31 of the first exterior wall surface material 3 on the opening 1A side as close as possible to the fitting 23. This allows the support member 6 to support the first exterior wall surface material 3 so as to more reliably cover the entire first surface 11 of the wall base material 21. Furthermore, the support member 6 can appropriately support the first exterior wall surface material 3 with the support extensions 62 and the end face support portions 63 so that the thickness of the first exterior wall surface material 3 can be more effectively emphasized by the shadows created around the fittings 23.

[0033] Compared to extrusion molding, for example, bending is a method suitable for producing a small number of support members 6, and may be able to reduce the production costs, including the number of steps and costs, when producing the support members 6. Furthermore, bending can reduce the time required to create a dedicated mold material, as is required with extrusion molding.

[0034] The restricting member 7 is attached to the fitting 23 and is a member for restricting water from entering the first surface 211 from the outdoor OD side through the gap between the fitting 23 and the first exterior wall facing material 3. In the support structure 5 having the support member 6 and the restricting member 7, even if the fitting 23 is installed on the indoor ID side of the first exterior wall facing material 3, a set surface for contacting the opposite surface 632 of the end face support portion 63 of the support member 6 can be formed on the contact surface 721 (described below) of the restricting member 7. This allows the support member 6 to support the first exterior wall facing material 3 so as to cover the first surface 211 of the wall base material 21 from the outdoor OD side, while the restricting member 7 attached to the fitting 23 restricts water from entering the first surface 211 from the outdoor OD side.

[0035] The regulating member 7 has a regulating main body 71 and a contacted portion 72. The regulating main body 71 constitutes the main body portion of the regulating member 7 that extends from the fitting 23 toward the outdoor (OD) side. The contacted portion 72 has higher flexibility than the regulating main body 71 and is provided on the surface of the regulating main body 71 opposite the opening 1A. The contacted portion 72 has a contact surface 721 that contacts the opposite surface 632 of the end surface support portion 63 of the support member 6 from the opening 1A side. In this way, in the regulating member 7, the contact surface 721 that contacts the opposite surface 632 of the end surface support portion 63 of the support member 6 is formed on the flexible contacted portion 72. This allows the flexibility of the contacted portion 72 to tightly contact the opposite surface 632 of the end surface support portion 63 and the contact surface 721 of the regulating member 7, enabling a liquid-tight seal between them.

[0036] The area of ​​the regulating body 71 closer to the outdoor OD side than the contacted portion 72 is positioned closer to the opening 1A than the contact surface 721, thereby forming a space for filling the sealant 10 between the end face support portion 63 of the support member 6. In this case, the sealant 10 can be filled in the space formed between the end face support portion 63 and the area of ​​the regulating body 71 closer to the outdoor OD side than the contacted portion 72. This makes it possible for the sealant 10 to more reliably prevent water from entering the first surface 211 from the outdoor OD side through between the end face support portion 63 of the support member 6 and the regulating member 7.

[0037] Furthermore, the area of ​​the regulating body 71 closer to the outdoor OD than the contacted part 72 has an inclined part that slopes downward toward the outdoor OD side, and a draining part 711 that extends downward from the end of the inclined part on the outdoor OD side. This allows water on the area of ​​the regulating body 71 closer to the outdoor OD than the contacted part 72 to flow away from the contacted part 72 in accordance with the downward slope, and also allows the water to be guided downward from the draining part 711.

[0038] The exterior wall fasteners 9 are jigs for supporting the second exterior wall surface material 4 so that the second exterior wall surface material 4 is positioned on the side opposite the opening 1A of the first exterior wall surface material 3. As shown in Fig. 2, a plurality of exterior wall fasteners 9 are provided at predetermined intervals in a direction along an edge 211A on the opening 1A side of the first surface 211 of the wall base material 21 and an edge 212A on the opening 1A side of the second surface 212. In a side view seen from a direction perpendicular to the first surface 211 and the second surface 212, the support members 6 and the exterior wall fasteners 9 are arranged alternately.

[0039] The exterior wall fastener 9 has a mounting portion 91 that is placed on the other end surface 32 of the first exterior wall facing material 3 that is supported by the support member 6, a protruding portion 92 that protrudes from the mounting portion 91 and is inserted into the groove portion 41 of the second exterior wall facing material 4, a support portion 93 that supports the second exterior wall facing material 4 from the indoor ID side, and a fixing portion 94 that is fixed to the second surface 212 with screws SC or the like via the furring board 22 and the waterproof sheet 24. With the exterior wall fastener 9, with the mounting portion 91 placed on the other end surface 32 of the first exterior wall facing material 3 and the fixing portion 94 fixed to the second surface 212, the protruding portion 92 is inserted into the groove portion 41 of the second exterior wall facing material 4, so that the support portion 93 can support the second exterior wall facing material 4 from the indoor ID side.

[0040] [Exterior wall construction procedure] Next, the construction procedure for the exterior wall structure 1 will be described with reference to FIGS. 3 to 5 in addition to FIGS.

[0041] First, the exterior wall base 2 is constructed, including a wall base material 21, a furring board 22, a door and window 23, and a waterproof sheet 24. Specifically, the wall base material 21 is installed so as to surround the opening 1A. Once the wall base material 21 is installed, the furring board 22 is attached to the second surface 212 of the wall base material 21 so as to cover the second surface 212 from the outdoor OD side, and the waterproof sheet 24 is attached to the second surface 212 so as to cover the furring board 22 from the outdoor OD side. Furthermore, the door and window 23 is attached to the first surface 211 of the wall base material 21 with the attachment portion 231 overlapping the first surface 211 from the outdoor OD side. At this time, a waterproof tape 241 is applied so as to straddle the attachment portion 231 of the door and window 23 and the portion of the waterproof sheet 24 that extends to the area facing the first surface 211.

[0042] Once construction of the exterior wall base 2 is complete, the support structure 5 is constructed for the exterior wall base 2. First, the restricting member 7 is attached to the fitting 23. At this time, the restricting member 7 is attached to the fitting 23 so that the contact surface 721 of the contacted portion 72 faces away from the opening 1A.

[0043] 3, the support base material 8 is attached to the second surface 212 via the base plate 22 and the waterproof sheet 24. At this time, the support base material 8 is attached to the second surface 212 so that the engaged portion 81 of the support base material 8 is located at a position spaced a distance corresponding to the length L1 of the support member 6 from the contact surface 721 of the contacted portion 72 of the regulating member 7. The length L1 of the support member 6 is the length from the fixed end 612 of the support fixing portion 61 to the opposite surface 632 of the end face support portion 63.

[0044] 3, the support member 6 is positioned so that the positioning portion 64 of the support member 6 engages with the locked portion 81 of the support base material 8. Specifically, with the positioning portion 64 engaged with the locked portion 81 of the support base material 8, the support fixing portion 61 is fixed to the second surface 212 by the screw member SC. With the support fixing portion 61 fixed to the second surface 212, the support extension portion 62 extends between the edge 211A of the first surface 211 on the opening 1A side and the edge 212A of the second surface 212 on the opening 1A side, and the opposite surface 632 of the end surface support portion 63 contacts the contact surface 721 of the regulating member 7.

[0045] Next, as shown in FIG. 4 , the first exterior wall surface material 3 is placed so as to be supported by the support member 6. The first exterior wall surface material 3 supported by the support member 6 is fixed to the support member 6 by being adhered with an adhesive. When the placement of the first exterior wall surface material 3 is completed, sealant 10 is filled between the area on the outdoor OD side of the contacted portion 72 of the regulating body 71 of the regulating member 7 and one end face 31 of the first exterior wall surface material 3. At this time, for the portion of the one end face 31 of the first exterior wall surface material 3 supported by the end face support portion 63 of the support member 6, sealant 10 is filled between the area on the outdoor OD side of the contacted portion 72 of the regulating body 71 of the regulating member 7 and the end face support portion 63. The support member 6 supports the first exterior wall surface material 3 with the support extension portion 62 and the end face support portion 63 so as to cover the entire first surface 211 from the outdoor OD side. This allows the support member 6 to properly support the first exterior wall surface material 3 so that the thickness of the first exterior wall surface material 3 can be effectively emphasized by the shadow created around the fitting 23 to which the regulating member 7 is attached.

[0046] Next, as shown in Fig. 5, the exterior wall fastener 9 is placed on the first exterior wall surface material 3 supported by the support member 6. Specifically, with the mounting portion 91 placed on the other end surface 32 of the first exterior wall surface material 3, the fixing portion 94 is fixed to the second surface 212 by the screw member SC.

[0047] Then, the second exterior wall surface material 4 is placed on the side opposite the opening 1A of the first exterior wall surface material 3 so as to be supported by the exterior wall fastener 9. At this time, in the exterior wall fastener 9, the protruding portion 92 is inserted into the groove portion 41 of the second exterior wall surface material 4, and the support portion 93 supports the second exterior wall surface material 4 from the indoor ID side.

[0048] Based on construction in accordance with the above construction procedure, an exterior wall structure 1 can be constructed, which includes an exterior wall base 2, a first exterior wall facing material 3 and a second exterior wall facing material 4 that are provided on the exterior wall base 2, and a support structure 5 for supporting the first exterior wall facing material 3 and the second exterior wall facing material 4. As described above, in the exterior wall structure 1, the support members 6 of the support structure 5 can appropriately support the first exterior wall facing material 3 relative to the exterior wall base 2 that includes a wall base material 21 and fittings 23, so that the thickness of the first exterior wall facing material 3 can be effectively emphasized by the shadows cast around the fittings 23.

[0049] The restricting member 7 may be omitted from the support structure 5 in the exterior wall structure 1. In this case, a set surface for contacting the opposite surface 632 of the end face support portion 63 of the support member 6 is set in advance on the fitting 23 itself.

[0050] The above describes an exterior wall structure 1 to which a support member 6 and a support structure 5 according to an embodiment of the present invention are applied, but the present invention is not limited to this and, for example, the following modified embodiments can be adopted.

[0051] In the above embodiment, the support fixing portion 61, the support extension portion 62, the end face support portion 63, and the positioning portion 64 that constitute the support member 6 each have the same thickness, but the present invention is not limited to this. A support member 6A according to a modified embodiment that is applied to the exterior wall structure 1 will be described with reference to FIG. 6.

[0052] 6, like the support member 6 described above, has a support fixing portion 61, a support extension portion 62, an end face support portion 63, and a positioning portion 64. The support member 6A is configured in the same manner as the support member 6 described above, except for the thickness of each portion that constitutes the support member 6A.

[0053] The support extension portion 62 of the support member 6A has a base abutment portion 62A and an extension portion 62B. The base abutment portion 62A is a portion that extends from the support fixing portion 61 toward the opening 1A side and abuts against the support base material 8 from the outdoor OD side when the positioning portion 64 is engaged with the engaged portion 81 of the support base material 8. The extension portion 62B is a portion that extends from the base abutment portion 62A toward the opening 1A side beyond the support base material 8. In a configuration in which the support extension portion 62 has the base abutment portion 62A and the extension portion 62B, the end surface support portion 63 extends from an end 621 of the extension portion 62B on the opening 1A side to the outdoor OD side.

[0054] The extending portion 62B of the support extension 62 is thicker than the thickness of the end face support portion 63. This allows for the realization of a support member 6A that includes an end face support portion 63 with a small thickness, but also includes an extending portion 62B that is thicker than the end face support portion 63. By reducing the thickness of the end face support portion 63, the first exterior wall face material 3 can be supported with the one end face 31 of the first exterior wall face material 3 on the opening 1A side as close as possible to the door / window 23. This allows the support member 6A to support the first exterior wall face material 3 so as to more reliably cover the entire first surface 11 of the wall base material 21. Furthermore, the support member 6A can appropriately support the first exterior wall face material 3 with the support extension 62 and the end face support portion 63, so that the thickness of the first exterior wall face material 3 can be more effectively emphasized by the shadow created around the door / window 23. Furthermore, since the support extension portion 62 has an extension portion 62B that is thicker than the end face support portion 63, the support extension portion 62 can be reinforced so that it can prevent the support extension portion 62 from bending toward the indoor ID side when the support extension portion 62 supports the first exterior wall surface material 3 from the indoor ID side.

[0055] In the support extension 62, the base abutting portion 62A has the same thickness as the end face support portion 63. By making the thickness of the base abutting portion 62A small, like the end face support portion 63, when the support extension 62 supports the first exterior wall surface material 3 from the indoor ID side, it is possible to support the first exterior wall surface material 3 so as to prevent the first exterior wall surface material 3 from displacing toward the outdoor OD side.

[0056] Furthermore, the support fixing portion 61 of the support member 6A has the same thickness as the end face support portion 63, as does the base abutting portion 62A of the support extension portion 62. The support fixing portion 61 has the function of supporting the end portion of the second exterior wall surface material 4 on the opening 1A side from the indoor ID side when it is fixed to the second surface 212 of the wall base material 21. By making the thickness of the support fixing portion 61 small, like the end face support portion 63, when the support fixing portion 61 supports the second exterior wall surface material 4 from the indoor ID side, it is possible to support the second exterior wall surface material 4 so as to prevent the second exterior wall surface material 4 from displacing toward the outdoor OD side.

[0057] Furthermore, the positioning portion 64 of the support member 6A may be formed to be thicker than the end face support portion 63, similar to the extending portion 62B of the support extension portion 62. The positioning portion 64 supports the weight of the first exterior wall surface material 3 supported by the support extension portion 62 and the end face support portion 63 when engaged with the engaged portion 81 of the support base material 8. In this case, by making the thickness of the positioning portion 64 thicker than the end face support portion 63, the positioning portion 64 can be reinforced so as to obtain the strength to support the weight of the first exterior wall surface material 3.

[0058] The support member 6A, in which the thicknesses of the support fixing portion 61, the support extension portion 62, the end face support portion 63, and the positioning portion 64 are set as described above, can be produced by extrusion molding, for example. Compared to bending, extrusion molding is a method suitable for producing a support member 6A having multiple portions with different thicknesses, and it allows for the stable mass production of support members 6A of the same shape.

[0059] The above-described specific embodiments mainly include inventions having the following configurations.

[0060] A support member according to one aspect of the present invention is a member for supporting an exterior wall facing material on an exterior wall substrate that includes a wall base material that is arranged to surround a side-facing opening that connects indoors and outdoors, the wall base material including a first surface that is adjacent to the opening and faces the outdoors, and a second surface that is located on the opposite side of the first surface from the opening and is positioned outdoors relative to the first surface, and a fitting that is attached to the wall base material to cover the opening, the fitting having an attachment portion that is attached to the first surface in a state where it is overlapped on the first surface from the outdoors side. This support member includes a support fixing portion that is fixed to the second surface, a support extension portion that extends from the support fixing portion toward the opening to a region facing the first surface to support the exterior wall facing material from the indoor side, and an end face support portion that extends from the support extension portion toward the outdoors and has an abutting surface that abuts against one end face of the exterior wall facing the opening to support the one end face.

[0061] This support member supports an exterior wall surface material so as to cover the first surface from the outdoor side of a wall base material having a first surface adjacent to an opening and facing the outdoors, and a second surface on the opposite side of the first surface from the opening and positioned more outdoors than the first surface. Specifically, with the support member's support fixing portion fixed to the second surface, the support extension portion extending from the support fixing portion toward the opening supports the exterior wall surface material from the indoor side, and the abutment surface of the end support portion extending from the support extension toward the outdoor side abuts against one end surface of the exterior wall surface material facing the opening, thereby supporting the one end surface. This support member can support the exterior wall surface material so as to cover the first surface of the wall base material without interposing a decorative member between the exterior wall surface material and the fixture. Moreover, the support member can appropriately support the exterior wall surface material so that the thickness of the exterior wall surface material can be effectively emphasized by the shadow cast around the fixture.

[0062] In the above support member, the support extension portion may be configured to have a length such that when the support fixing portion is fixed in a fixed position on the second surface, the surface opposite to the abutment surface in the end surface support portion contacts a setting surface provided on the building fixture.

[0063] In this embodiment, the support extension has a length such that, when the support fixing portion is fixed in a fixed position on the second surface, the surface opposite the abutting surface of the end support portion contacts the set surface provided on the fixture. In this case, when the support fixing portion of the support member is fixed to the second surface, the support extension extends between the edge of the first surface facing the opening and the edge of the second surface facing the opening, so as to prevent a gap from forming between the end support portion and the fixture. As a result, the support member can support the exterior wall facing material so as to cover the entire first surface from the exterior side using the support extension and the end support portion, while preventing a gap from forming between the end support portion and the fixture. Therefore, the exterior wall facing material can be supported by the support member so as to cover the first surface of the wall base material, even without interposing a decorative member between the exterior wall facing material and the fixture.

[0064] In the above-mentioned support member, the length from the end of the support fixing portion opposite the end face support portion to the abutment surface of the end face support portion may be set to be longer than the length from the one end face to the other end face of the exterior wall surface material.

[0065] Typically, exterior wall panels have a specified size and are attached to a mounting area defined on a building as an area corresponding to the specified size. However, if a fixture is present in the mounting area, a smaller exterior wall panel must be prepared to fit the size of the area outside the fixture and supported on the building. For example, even if it is necessary to support an exterior wall panel formed so that the length from one end face of the exterior wall panel facing the opening to the other end face is approximately the same as the length from the edge of the opening side of the first surface to the edge of the opening side of the second surface, by using the above-mentioned embodiment, the support member can support the exterior wall panel so that it covers the entire first surface from the outdoor side using the support extension and end support parts, with the support fixing part fixed to the second surface.

[0066] In the above support member, the support fixing portion, the support extension portion, and the end surface support portion may each have the same thickness.

[0067] In this embodiment, a support member that supports one end face of the exterior wall surface material on the opening side and has a thin end face support portion can be realized using a simple technique. By reducing the thickness of the end face support portion, the exterior wall surface material can be supported with the one end face of the exterior wall surface material on the opening side as close as possible to the fixture. This allows the support member to support the exterior wall surface material so as to more reliably cover the entire first surface of the wall base material. Furthermore, the support member can appropriately support the exterior wall surface material using the support extension portion and the end face support portion so that the thickness of the exterior wall surface material can be more effectively emphasized by the shadow created around the fixture.

[0068] In the above support member, the support extension may have a portion that is thicker than the thickness of the end surface support portion.

[0069] In this aspect, it is possible to realize a support member that has an end face support portion with a small thickness, and a support extension portion that has a portion that is thicker than the end face support portion. By having the support extension portion have a portion that is thicker than the end face support portion, it is possible to reinforce the support extension portion so that it can be prevented from bending toward the indoor side when the support extension portion supports the exterior wall surface material from the indoor side.

[0070] The support member may further include a positioning portion for positioning the support fixing portion at the fixing position by engaging with an engaging portion provided on the second surface of the wall base material.

[0071] A support base member having an interlocking portion may be attached to the second surface of the wall base member, thereby presetting the interlocking portion on the second surface. In this case, the support member is positioned so that the positioning portion of the support member interlocks with the interlocking portion. This allows the support and fixing portion to be fixed to the second surface with the fixing position relative to the second surface of the support and fixing portion positioned so that the surface opposite the end face support portion of the support member contacts a preset setting surface on the fixture. Therefore, the support member can support the exterior wall surface material so as to cover the entire first surface of the wall base member from the exterior side, while more reliably preventing gaps from forming between the end face support portion and the fixture.

[0072] A support structure according to another aspect of the present invention includes the support member described above and a restricting member attached to the fitting and configured to restrict water from entering the first surface from the exterior side through a gap between the fitting and the exterior wall surface material. The restricting member extends from the fitting to the exterior side and has a contact surface that contacts the end face support portion of the support member from the opening side.

[0073] With this support structure, even if a fixture is installed indoors relative to the exterior wall surface material, the surface that comes into contact with the opposite surface of the end support portion of the support member can be formed on the contact surface of the restricting member. As a result, the support member supports the exterior wall surface material so as to cover the first surface of the wall base material from the outdoors, and the restricting member attached to the fixture can restrict water from entering the first surface from the outdoors.

[0074] In the above support structure, the area of ​​the regulating member that is closer to the outside than the contact surface may be positioned closer to the opening than the contact surface, thereby forming a space between the end face support portion and the area that is closer to the outside than the contact surface, thereby forming a space for filling sealing material between the end face support portion and the area that is closer to the outside than the contact surface.

[0075] In this embodiment, a sealant can be filled in the space formed between the end support portion and the restricting member in a region on the outdoor side of the contact surface of the restricting member, thereby more reliably preventing water from entering the first surface from the outdoor side through a gap between the end support portion of the support member and the restricting member.

[0076] In the above support structure, the area of ​​the regulating member that is outdoors relative to the contact surface may be configured to have an inclined portion that slopes downward toward the outdoors, and a drain portion that extends downward from the outdoors-side end of the inclined portion.

[0077] In this aspect, water in the area of ​​the regulating member that is outside the contact surface can be made to flow away from the contact surface in accordance with the downward slope, and the water can be directed downward from the drain portion.

[0078] In the above support structure, the regulating member may have a main body and a contacted portion having greater flexibility than the main body, and the contacted portion may have the contact surface.

[0079] In this aspect, the contact surface of the regulating member that contacts the opposite surface of the end face support portion of the support member is formed on a flexible contacted portion, thereby allowing the flexibility of the contacted portion to tightly contact the opposite surface of the end face support portion and the contact surface of the regulating member so as to achieve a liquid-tight seal.

[0080] An exterior wall structure according to another aspect of the present invention is an exterior wall structure for a building. This exterior wall structure includes a wall base material that is arranged to surround a side-facing opening that connects indoors and outdoors and includes a first surface that is adjacent to the opening and faces the outdoors, and a second surface that is arranged on the opposite side of the first surface from the opening and is positioned closer to the outdoors than the first surface, a fitting that is attached to the wall base material so as to cover the opening and has an attachment portion that is attached to the first surface while being overlapped on the first surface from the outdoors side, an exterior wall surface material that is provided for the wall base material and the fitting, and the support member described above that supports the exterior wall surface material so as to cover the attachment portion of the fitting from the outdoors side.

[0081] As described above, according to the present invention, a support member and a support structure for supporting an exterior wall surface material so as to cover the first surface of a wall base material without using a decorative member can be provided, and an exterior wall structure can also be provided.

Claims

1. a wall base material that is provided to surround a side-facing opening that connects the indoors and the outdoors, and that includes a first surface that faces the outdoors adjacent to the opening, and a second surface that is provided on the first surface opposite the opening and positioned outdoors relative to the first surface; and a fitting that is attached to the wall base material so as to cover the opening, and that has an attachment portion attached to the first surface in a state where it is overlapped on the first surface from the outdoors side, and is used to support an exterior wall surface material so as to cover the attachment portion from the outdoors side against an exterior wall base material, a support fixing portion fixed to the second surface; a support extension portion that extends from the support fixing portion toward the opening portion to a region facing the first surface, thereby supporting the exterior wall surface material from the indoor side; an end surface support portion extending from the support extension portion to the exterior side and having an abutment surface that abuts against one end surface of the exterior wall surface material on the opening side to support the one end surface; A support member comprising: a positioning portion for positioning the support fixing portion at a fixed position on the second surface by engaging with an engaging portion provided on the second surface of the wall base material.

2. A support member as described in claim 1, wherein the support extension portion has a length such that when the support fixing portion is fixed in the fixed position on the second surface, the opposite surface of the abutment surface in the end surface support portion contacts a set surface provided on the building material.

3. A support member as described in claim 1 or 2, wherein the length from the end of the support fixing portion opposite the end face support portion to the abutment surface of the end face support portion is set to be longer than the length from the one end face to the other end face of the exterior wall surface material.

4. The support member according to any one of claims 1 to 3, wherein the support fixing portion, the support extension portion, and the end surface support portion each have the same thickness.

5. The support member according to any one of claims 1 to 3, wherein the support extension has a portion that is thicker than the thickness of the end surface support portion.

6. A support member according to any one of claims 1 to 5; a restricting member attached to the fixture and configured to restrict water from entering the first surface from the outside through a gap between the fixture and the exterior wall surface material; A support structure in which the regulating member extends from the fixture to the outdoors and has a contact surface that contacts the end face support portion of the support member from the opening side.

7. The support structure described in claim 6, wherein the area of ​​the regulating member that is outside the contact surface is positioned closer to the opening than the contact surface, thereby forming a space for filling sealing material between the end face support portion and the area.

8. A support structure as described in claim 6 or 7, wherein the area of ​​the regulating member facing outdoors from the contact surface has an inclined portion that slopes downward toward the outdoors and a drain portion that extends downward from the outdoor end of the inclined portion.

9. the restricting member has a main body and a contacted portion having greater flexibility than the main body, The support structure according to any one of claims 6 to 8, wherein the contacted portion has the contact surface.

10. An exterior wall structure of a building, a wall base material including: a first surface that is arranged to surround a side-facing opening that connects the indoors and the outdoors, the first surface facing the outdoors adjacent to the opening; and a second surface that is arranged on the opposite side of the first surface from the opening and is positioned closer to the outdoors than the first surface; a fitting attached to the wall base material so as to cover the opening, the fitting having an attachment portion attached to the first surface in a state where the attachment portion is overlapped with the first surface from the outdoor side; An exterior wall surface material provided for the wall base material and the fittings; An exterior wall structure comprising: a support member according to any one of claims 1 to 5 for supporting the exterior wall surface material so as to cover the mounting portion of the fixture from the outdoor side.

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