The present invention relates to an exterior wall member attachment member that attaches an exterior wall member formed in a flat plate shape to an exterior wall base member, a lower end exterior wall member attachment member that attaches the lowermost exterior wall member to the exterior wall base member, and an exterior wall member attachment structure including the exterior wall member attachment member and the lower end exterior wall member attachment member.
In the related art, there is known an exterior wall member attachment structure in which exterior wall members each formed in a plate shape elongated in a horizontal direction are disposed side by side in a vertical direction along an exterior wall base member to form an exterior wall face of a building. From requirements for waterproofness, work efficiency, designability, and the like, in such an exterior wall member attachment structure, the abutting portion of the upper and lower exterior wall members has a phase jag joint shape in which a lower end protruding portion, of the upper exterior wall member, having the exterior lower end protruding downward and an upper end protruding portion, of the lower exterior wall member, having the interior upper end protruding upward overlap each other. The abutting portion of the upper and lower exterior wall members as described above is retained by the exterior wall member attachment member and attached to the exterior wall base member. The exterior wall member attachment member includes a lower end receiving portion which receives a lower end protruding portion of the upper exterior wall member, a back side receiving portion which receives a back side protruding portion formed at the interior side with respect to the upper end protruding portion of the lower exterior wall member, and a fixing portion fixed to the exterior wall base member (See, for example, Patent Literature 1 to 3.).
Patent Literature 1: JP 2003-129639 A
Patent Literature 2: JP 2003-268952 A
Patent Literature 3: JP 2005-220577 A
When a horizontal external force due to, for example, an earthquake is applied to the building, the exterior wall base member is also deformed following the interlayer deformation of the building framework. At this time, when the exterior wall member is displaced following the deformation of the exterior wall base member, the exterior wall member may be damaged by collision between the exterior wall members, or the exterior wall member may fall off from the exterior wall attachment fitting.
In view of the above, an object of the present invention is to provide an exterior wall member attachment member, a lower end exterior wall member attachment member, and an exterior wall member attachment structure that can prevent the exterior wall member from being damaged or falling off even when a horizontal external force is applied to a building.
An exterior wall attachment member of the present invention that when exterior wall members each formed in a flat plate shape, and having an upper end protruding portion having an interior upper end protruding upward, a lower end protruding portion having an exterior lower end protruding downward, and a back side protruding portion having an interior lower end protruding downward, the back side protruding portion being shorter than the lower end protruding portion, are disposes side by side in a vertical direction, retains an abutting portion of the upper and lower exterior wall members, and attaches the abutting portion to an exterior wall base member, the exterior wall attachment member comprising: a base portion having at least one screw insertion hole, and fixed to the exterior wall base member by inserting a screw into only one screw insertion hole among the screw insertion holes and driving the screw into the exterior wall base member; a first holding portion which sandwiches and retains the back side protruding portion of the upper exterior wall member from an exterior side and an interior side; and
a second holding portion which sandwiches and retains the upper end protruding portion of the lower exterior wall member from an exterior side and an interior side.
The exterior wall attachment member of the present invention, wherein the base portion has the plurality of screw insertion holes side by side in a horizontal direction.
A lower end exterior wall attachment member of the present invention that when exterior wall members each formed in a flat plate shape, and having an upper end protruding portion having an exterior upper end protruding upward, a lower end protruding portion having an exterior lower end protruding downward, and a back side protruding portion having an interior lower end protruding downward, the back side protruding portion being shorter than the lower end protruding portion, are disposed side by side in a vertical direction, retains the back side protruding portion of the lowermost exterior wall member, and attaches the back side protruding portion to an exterior wall base member, the lower end exterior wall attachment member comprising: a base portion having at least one screw insertion hole, and fixed to the exterior wall base member by inserting a screw into only one screw insertion hole among the screw insertion holes and driving the screw into the exterior wall base member; and a third holding portion which sandwiches and retains the back side protruding portion of the upper exterior wall member from an exterior side and an interior side.
An exterior wall member attachment structure of the present invention, wherein the back side protruding portion of the lowermost exterior wall member is attached to the exterior wall base member by the lower end exterior wall attachment member, and the back side protruding portion of the upper exterior wall member and the upper end protruding portion of the lower exterior wall member at the abutting portion of the upper and lower exterior wall members are attached to an exterior wall base member by the exterior wall attachment member.
According to the exterior wall member attachment member of the present invention, the back side protruding portion of the upper exterior wall member is sandwiched and retained from the exterior side and the interior side by the first holding portion. The upper end protruding portion of the lower exterior wall member is sandwiched and retained from the exterior side and the interior side by the second holding portion. As described above, since the first holding portion sandwiches and retains the back side protruding portion from the exterior side and the interior side, and the second holding portion sandwiches and retains the upper end protruding portion from the exterior side and the interior side, the exterior wall member is allowed to be slightly displaced in the in-plane direction. In addition, since the base portion is fixed by inserting a screw into only one screw insertion hole among the screw insertion holes and driving the screw into the exterior wall base member, the exterior wall member attachment member is allowed to rotate about the screw. Therefore, following interlayer deformation of a building framework due to, for example, an earthquake or the like, even when the exterior wall base member is displaced, the exterior wall member attachment member can rotate relative to the exterior wall base member, and the exterior wall member slides smoothly in the horizontal direction while maintaining the posture to follow the displacement of the exterior wall base member, so that it is possible to absorb the inclination of the building due to the earthquake, and prevent the exterior wall member from being damaged or falling off
Furthermore, according to the exterior wall member attachment member of the present invention, since the base portion has a plurality of screw insertion holes side by side in the horizontal direction, the position where the exterior wall member attachment member is disposed can be shifted so as not to interfere with another member such as a backup member of a vertical joint.
According to the lower end exterior wall member attachment member of the present invention, the back side protruding portion of the lowermost exterior wall member is sandwiched and retained from the exterior side and the interior side by the third holding portion. In the upper end protruding portion of the lowermost exterior wall member, since the second holding portion of the above-mentioned exterior wall member attachment member sandwiches and retains the upper end protruding portion from the exterior side and the interior side, the exterior wall member is allowed to be slightly displaced in the in-plane direction. Since the base portion is fixed by inserting a screw into only one screw insertion hole among the screw insertion holes and driving the screw into the exterior wall base member, the lower end exterior wall member attachment member is allowed to rotate about the screw. Therefore, following interlayer deformation of a building framework due to, for example, an earthquake or the like, even when the exterior wall base member is displaced, the lower end exterior wall member attachment member can rotate relative to the exterior wall base member, and the lowermost exterior wall member slides smoothly in the horizontal direction while maintaining the posture to follow the displacement of the exterior wall base member, so that it is possible to absorb the inclination of the building due to the earthquake, and prevent the exterior wall member from being damaged or falling off
According to the exterior wall member attachment structure of the present invention, since the back side protruding portion of the lowermost exterior wall member is attached to the exterior wall base member by the lower end exterior wall member attachment member, and the back side protruding portion of the upper exterior wall member and the upper end protruding portion of the lower exterior wall member at the abutting portion of the upper and lower exterior wall members are attached to the exterior wall base member by the exterior wall member attachment member, when interlayer deformation occurs due to an earthquake or the like, the exterior wall member smoothly is slid, and follows the displacement of the exterior wall base member, so that it is possible to absorb the inclination of the building due to the earthquake, and prevent the exterior wall member from being damaged or falling off.
Hereinafter, embodiments of an exterior wall member attachment member 1, a lower end exterior wall member attachment member 2, and an exterior wall attachment structure 3 according to the present invention will be described with reference to the drawings. The exterior wall member attachment member 1 and the lower end exterior wall member attachment member 2 are fittings for attaching an exterior wall member 4 to an exterior wall base member 5 formed by stretching a waterproof moisture-permeable sheet on a surface of plywood fixed to a framework of a building. Plywood is practically used as the exterior wall base member 5, but the face material may not be used as the exterior wall base member 5. A rod-like member such as a column member or a body edge can also be used as the base member.
As illustrated in
The exterior wall member 4 is formed to have, for example, about 300 mm in the height direction, a maximum of about 2000 mm in the width direction, and a thickness of about 18.5 mm. The length in the width direction varies depending on the position where the exterior wall member 4 is installed. Specifically, in the case of being installed beside a door or window fixture such as an opening or a front door, or in the case of being installed on an exterior wall face having an in-plane length of less than 2000 mm, for the exterior wall member 4, for example, the exterior wall member 4 having dimensions of about 500 mm, about 1000 mm, and about 1500 mm in the width direction is used. The plurality of exterior wall members 4 is disposed side by side in the height direction and the width direction. The dimension of the exterior wall member 4 is not limited thereto, and may be a dimension of a general exterior wall member.
As illustrated in
In base portion 6, three screw insertion holes 20 are disposed at equal intervals in the horizontal direction. The screw insertion hole 20 is a through hole having a size into which the screw portion of the screw 22 can be inserted and having a smaller diameter than the screw head. The side plate portion 7 is bent at a right angle from both side edges of the base portion 6 and extends in the exterior direction, the side extension portions 9 is bent at a right angle from the exterior edge of the side plate portion 7, and the side extension portions 9 is formed so as to be parallel to the back face of the exterior wall member 4. The horizontal plate portion 8 is formed horizontally by being bent at a right angle from the lower end edge of the base portion 6, and is also orthogonal to the lower end of the side plate portion 7.
The first holding portion 10 includes a first pressing piece 12 formed to be curved in the side extension portion 9, and a first receiving portion 13 formed at the center of an exterior end of the horizontal plate portion 8. The first pressing piece 12 is formed such that part of the lower portion of the side extension portion 9 is curved so as to bulge in the exterior direction. The first receiving portion 13 protrudes from the center of the horizontal plate portion 8 and protrudes in the exterior direction further than the first pressing piece 12, and a distal end thereof is curved upward. As illustrated in
The second holding portion 11 includes a second receiving portion 14 formed to be bent downward from an exterior end of the horizontal plate portion 8, and a second pressing portion 15 disposed below the horizontal plate portion 8 and extending in the exterior direction, and having distal ends bent and extending in a direction away from each other. The second receiving portion 14 is formed to protrude in the exterior direction further than the second pressing portion 15. As illustrated in
The lower end exterior wall member attachment member 2 is a member that serves only as an upper portion of the exterior wall member attachment member 1 described above. Portions having the same shape as the exterior wall member attachment member 1 and playing the same role as the exterior wall member attachment member 1 are denoted by the same names and reference numerals, and a detailed description thereof is omitted.
As illustrated in
In the base portion 6 of the lower end exterior wall member attachment member 2, three screw insertion holes 20 similar to those of the exterior wall member attachment member 1 are disposed side by side at equal intervals in the horizontal direction. The side plate portions 7, the side extension portions 9, and the horizontal plate portion 8 have the configurations same as those of the exterior wall attachment portion. Reinforcing ribs 17 are formed on a lower face of horizontal plate portion 8. The third holding portion 16 includes a third pressing piece 18 having the same configuration as the first pressing piece 12 and a third receiving portion 19 having the same configuration as the first receiving portion 13. As illustrated in
The exterior wall attachment structure 3 for attaching the exterior wall member 4 to the exterior wall base member 5 is constructed from the lowermost end exterior wall member 4. First, as illustrated in
Then, next, the back side protruding portion 43 of the lowermost exterior wall member 4 is inserted into the third holding portion 16 of the lower end exterior wall member attachment member 2 fixed to the exterior wall base member 5. At this time, as illustrated in
Then, the second holding portion 11 sandwiches and retains the upper end protruding portion 41 of the exterior wall member 4 disposed directly on the lowermost exterior wall member 4, the exterior wall member attachment member 1 is disposed at the upper end protruding portion 41, and the back side protruding portion 43 of the upper exterior wall member 4 is inserted into the first holding portion 10 of the exterior wall member attachment member 1 fixed to the exterior wall base member 5. When the back side protruding portion 43 is inserted into the first holding portion 10, the first pressing piece 12 is slightly elastically deformed and widened in a direction away from the first receiving portion 13, and sandwiches and retains the back side protruding portion 43 from the exterior side and the interior side. Then, the screw 22 is driven into the exterior wall base member 5 through only one of the screw insertion holes 20 formed in the base portion 6 of the exterior wall member attachment member 1 disposed at the upper end protruding portion 41 of the upper exterior wall member 4 to fix the exterior wall member attachment member 1, and attaches the upper end of the exterior wall member 4 to the exterior wall base member 5. Then, as illustrated in
As described above, in the exterior wall attachment structure 3, the back side protruding portion 43 of the lowermost exterior wall member 4 is attached to the exterior wall base member 5 by the lower end exterior wall member attachment member 2, and the back side protruding portion 43 of the upper exterior wall member 4 and the upper end protruding portion 41 of the lower exterior wall member 4 at the abutting portion of the upper and lower exterior wall members 4 are attached to the exterior wall base member 5 by the exterior wall member attachment member 1.
In the exterior wall attachment structure 3, since the three screw insertion holes 20 formed in the base portion 6 of each of the exterior wall member attachment member 1 and the lower end exterior wall member attachment member 2 are disposed side by side in the horizontal direction, as illustrated in
The first holding portion 10 and the second holding portion 11 of the exterior wall member attachment member 1 which retain the exterior wall member 4, and the third holding portion 16 of the lower end exterior wall member attachment member 2 each sandwich and retain the back side protruding portion 43 and the upper end protruding portion 41 of the exterior wall member 4 from the interior side and the exterior side, so that the exterior wall member 4 is allowed to be slightly displaced in the in-plane direction with respect to the exterior wall member attachment member 1 and the lower end exterior wall member attachment member 2. Then, the exterior wall member attachment member 1 and the lower end exterior wall member attachment member 2 are fixed when the screw 22 is inserted only into one screw insertion hole 20 among the screw insertion holes 20 formed in the base portion 6, and the screw 22 is driven into the exterior wall base member 5, so that the exterior wall member attachment member 1 and the lower end exterior wall member attachment member 2 are allowed to rotate about the screw 22.
Here, if the exterior wall member attachment member 1 and the lower end exterior wall member attachment member 2 are fixed by inserting the screws 22 into two or more positions of the screw insertion holes 20, as illustrated in
In contrast, as illustrated in
It goes without saying that the embodiment of the present invention is not limited to the above-described embodiments, and can be appropriately changed without departing from the scope of the idea of the present invention.
The exterior wall member attachment member 1, the lower end exterior wall member attachment member 2, and the exterior wall attachment structure 3 according to the present invention are suitable as, for example, a fitting and a structure for attaching the exterior wall member 4 of a house.
1 exterior wall member attachment member
2 lower end exterior wall member attachment member
3 exterior wall attachment structure
4 exterior wall member
5 exterior wall base member
6 base portion
7 side plate portion
8 horizontal plate portion
10 first holding portion
11 second holding portion
16 third holding portion
20 screw insertion hole
22 screw
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/JP2020/046757 | 12/15/2020 | WO |