Fastener and attachment structure for wall material

Abstract

To provide fasteners that prevent wall materials from falling off even when the wall materials shrink due to heat.SOLUTION: A fastener 3 which is used for attaching a wall material 1 to a wall base 2 comprises: a fixed portion 31 that is fixed to the wall base 2; a downward piece 33 that is hooked onto an upper tongue portion 12 provided on the wall material 1; and an auxiliary piece 34 that is located below the downward piece 33 and is inserted into the wall material 1 below the upper tongue portion 12. The fastener 3 may include a fastener body 3a having the fixed portion 31 and the downward piece 33, and an auxiliary member 3b having the auxiliary piece 34.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a fastener and a mounting structure for a wall material, and more particularly to a fastener used when mounting a wall material to a wall base and a mounting structure for a wall material using this fastener. [Background technology]

[0002] Patent Document 1 describes a fastener for exterior wall materials. This fastener is provided with a bottom plate that protrudes forward from a base plate. A downward piece (lower claw) and an upward piece (upper claw) are formed at the front end of the bottom plate. The downward piece protrudes downward from the center of the bottom plate in the width direction. The upward piece protrudes upward from both ends of the bottom plate in the width direction.

[0003] When using this fastener to install an exterior wall material, first, the base plate of the fastener is fixed to the wall substrate. At this time, the downward piece of the fastener is hooked onto the upper solid part provided at the top of the exterior wall material attached to the lower side of the fastener. As a result, the upper part of the exterior wall material placed below the fastener is attached to the wall substrate by the fastener. Next, the lower solid part provided at the lower end of another exterior wall material is hooked onto the upward piece of the fastener fixed to the wall substrate. As a result, the lower end of the exterior wall material placed above the fastener is attached to the wall substrate by the fastener. Additionally, the upper solid part and the lower solid part of the exterior wall materials adjacent vertically are solidly joined. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2005-61135 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the above conventional example, when the exterior wall material fastened with metal fittings is exposed to heat such as during a fire, the exterior wall material may thermally shrink, causing the upper solid part of the lower exterior wall material to come off the downward piece of the fastener. This may result in an unstable state in which the upper exterior wall material supported only by the lower solid part and the upward piece of the fastener may easily fall off.

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide a fastener and a wall material mounting structure that will not easily cause a wall material to fall off even if the wall material undergoes thermal shrinkage. [Means for solving the problem]

[0007] A fastener according to one embodiment of the present invention is a fastener for attaching a wall material to a wall base, and comprises a fixing portion fixed to the wall base, a downward piece hooked onto an upper solid portion provided at the top of the wall material, and an auxiliary piece located below the downward piece and inserted into the wall material below the upper solid portion.

[0008] A wall material mounting structure according to one embodiment of the present invention is a structure in which a wall material is mounted to a wall base with the fastener, wherein the downward piece and the auxiliary piece are positioned in front of the wall base by fixing the fixing part to the wall base, the downward piece is hooked onto an upper solid part provided at the top of the lower wall material of two wall materials arranged vertically in front of the wall base, and the auxiliary piece is inserted into a slit provided in the wall material below the upper solid part. Effect of the Invention

[0009] According to the present invention, in addition to the downward piece, the auxiliary piece can also be hooked onto the wall material, which has the advantage that it is less likely to fall off even if the wall material undergoes thermal shrinkage. [Brief description of the drawings]

[0010] [Figure 1] Fig. 1A is a front view showing the fastener according to the present embodiment, and Fig. 1B is a side view showing the fastener according to the present embodiment. [Diagram 2]Fig. 2A is a front view showing a fastener body of the fastener according to the present embodiment, and Fig. 2B is a side view showing the fastener body of the fastener according to the present embodiment. [Diagram 3] Fig. 3A is a front view showing the auxiliary member of the fastener according to the embodiment, Fig. 3B is a XX cross-sectional view showing the auxiliary member of the fastener according to the embodiment, Fig. 3C is a YY cross-sectional view showing the auxiliary member of the fastener according to the embodiment. [Figure 4] FIG. 4 is a cross-sectional view showing the mounting structure for the wall material according to this embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] (Embodiment) The fastener 3 according to this embodiment will be described below using the directions in the installed state shown in Fig. 4. Specifically, the indoor / outdoor direction is defined as the front-rear direction, and in particular, the direction from the wall base 2 toward the outdoors is defined as the front, and the direction from the wall base 2 toward the indoors is defined as the rear. Also, the direction perpendicular to the indoor / outdoor direction in a plan view (viewed from above) is defined as the left-right direction, and the direction perpendicular to the front-rear direction and the left-right direction is defined as the up-down direction.

[0012] <Fastener> The fastener 3 according to this embodiment is fixed to a wall base 2 and is used to attach a wall material 1 to the wall base 2. The fastener 3 according to this embodiment can be formed, for example, from metal fittings. As shown in Fig. 4, the fastener 3 according to this embodiment is attached to the wall base 2 and holds the opposing ends of two vertically adjacent wall materials 1a, 1b. As shown in Figs. 1A and 1B, the fastener 3 is formed with a fastener main body 3a and an auxiliary member 3b.

[0013] In this embodiment, the wall base 2 is a base material for attaching the wall material 1, and examples include furring strips such as vertical and horizontal furring strips, pillars, studs, and board materials such as gypsum board or plywood installed in front of the pillars or studs (the outdoor side).

[0014] <Fastener body> The fastener body 3a is made of, for example, metal and can be formed by bending or pressing a metal plate such as a stainless steel plate. As shown in Figures 2A and 2B, the fastener body 3a includes a fixing portion 31, an upward piece 32, and a downward piece 33.

[0015] The thickness direction of the fixing part 31 is parallel to the front-rear direction, and the outer shape is formed in a rectangular plate shape. The holding part 42 described below is formed by cutting and raising a portion adjacent to the fixing part 31 in the metal plate constituting the fastener main body 3a. Therefore, in the lower half of the fixing part 31, a substantially rectangular hole 20 that is long in the left-right direction and penetrates in the front-rear direction and is formed by cutting and raising the holding part 42 is formed.

[0016] A bent portion 21 is formed in the upper portion of the hole 20 in the fixing portion 31 so as to be bent so as to protrude forward. The bent portion 21 is formed over the entire length of the fixing portion 31 in the left-right direction. The bent portion 21 has a dogleg shape in a cross section perpendicular to the left-right direction, and is composed of an upper inclined piece 211 that is positioned lower as it approaches the front end, and a lower inclined piece 212 whose front end is connected to the front end of the upper inclined piece 211 and is positioned higher as it approaches the front end.

[0017] A plurality of fixing holes 221, 222 are provided in the upper portion of the hole 20 in the fixing portion 31. As shown in FIG. 4, fixing devices 91, 92 made of nails or screws are inserted into the fixing holes 221, 222, and the fixing devices 91, 92 are driven into the wall base 2, thereby fixing the fixing portion 31 to the wall base 2. As shown in FIG. 2A, the plurality of fixing holes 221, 222 include a plurality of fixing holes 221 formed in the upper inclined piece portion 211 and a fixing hole 222 formed in the lower portion of the bent portion 21 in the fixing portion 31. The plurality of fixing holes 221 are aligned in the left-right direction. Each fixing hole 221 penetrates the upper inclined piece portion 211 in the thickness direction. The fixing hole 222 penetrates the fixing portion 31 in the front-rear direction. The fixing hole 222 is located in the center of the fixing portion 31 in the left-right direction.

[0018] The fixing portion 31 is provided with a pair of wall material receiving portions 5. The pair of wall material receiving portions 5 protrude forward from both the left and right ends of the fixing portion 31, and are arranged along the rear surface (indoor side surface) 11 of the wall material 1 as shown in Fig. 4 to restrict movement of the wall material 1 toward the rear (indoor side). Each wall material receiving portion 5, 5 has a protruding piece 50 protruding forward from the fixing portion 31, and a plurality of receiving pieces 51, 52 formed on the tip end (front end) of the protruding piece 50.

[0019] The multiple receiving pieces 51, 52 provided at the front end of each wall material receiving portion 5 are positioned forward and away from the fixed portion 31. The multiple receiving pieces 51, 52 of each wall material receiving portion 5 include a first receiving piece 51 that protrudes from the front end of the protruding piece 50 toward the fixed portion 31 side in the left-right direction (the other wall material receiving portion 5 side), and a pair of second receiving pieces 52, 52 that protrude from the front end of the protruding piece 50 toward the opposite side to the fixed portion 31 side in the left-right direction (the opposite side to the other wall material receiving portion 5).

[0020] Each first receiving piece 51 is provided at the vertical middle of the corresponding protruding piece 50. Each first receiving piece 51 is formed in a plate shape with a thickness direction parallel to the front-rear direction, and is located below the facing piece 35. The upper end surface of each first receiving piece 51 is along the lower surface of the facing piece 35. Therefore, even if a downward load is applied to the facing piece 35 from the upper wall material 1a, this load is applied to the first receiving piece 51 supporting the facing piece 35 from below, and the facing piece 35 is unlikely to sag. In addition, a pair of second receiving pieces 52, 52 are provided on both the upper and lower sides of the first receiving piece 51, respectively. That is, the first receiving pieces 51 and the second receiving pieces 52 are alternately provided at the front end of each protruding piece 50.

[0021] The fixing portion 31 is provided with a holding portion 42. The holding portion 42 protrudes forward from the upper edge of the hole 20. The holding portion 42 is formed with an opposing piece 35, an upward piece 32, and a plurality of downward pieces 33.

[0022] The facing piece 35 is formed in a plate shape protruding forward from the vertical middle part of the fixed part 31 and extends in the left-right direction. The facing piece 35 also protrudes forward from the upper edge of the hole 20 of the fixed part 31. The facing piece 35 faces each end face of the two wall materials 1a, 1b adjacent in the vertical direction. A convex part 38 protruding upward is formed in the center part of the facing piece 35 in a plan view. The convex part 38 is formed by, for example, drawing. A receiving piece 36 surrounded by a slit having a U-shape in a plan view is formed at the upper end part of the convex part 38. The receiving piece 36 protrudes obliquely upward from the rear part of the convex part 38, and the tip part of the receiving piece 36 is located above the upper surface of the part of the convex part 38 excluding the receiving piece 36.

[0023] The upward piece 32 protrudes upward from the front end of the facing piece 35. Moreover, the upward piece 32 is formed over the entire length in the left-right direction of the facing piece 35. Of the two wall materials 1a, 1b adjacent in the vertical direction, the upward piece 32 hooks onto the lower part of the upper wall material 1a, supporting the upper wall material 1a from below and restricting the forward movement of the upper wall material 1a.

[0024] The downward piece 33 protrudes downward from the front end of the facing piece 35. A pair of downward pieces 33 are provided, one on each of the left and right sides of the left-right center (the part of the protruding part 38) of the facing piece 35. Each downward piece 33 hooks onto the upper solid part 12 at the upper part of the lower wall material 1b of the two wall materials 1a, 1b adjacent to each other in the vertical direction, and restricts the forward movement of the lower wall material 1b. Each downward piece 33 is formed by cutting and raising a part adjacent to the facing piece 35 in the metal plate constituting the fastener 3. Holes are formed on both the left and right sides of the facing piece 35 by cutting and raising the downward piece 33. A protrusion 43 is formed on the rear surface of each downward piece 33.

[0025] <Auxiliary parts> The auxiliary member 3b is made of, for example, metal and can be formed by bending or pressing a metal plate such as a stainless steel plate. As shown in Figures 3A and 3B, the auxiliary member 3b includes a substrate 37 and an auxiliary piece 34.

[0026] The substrate 37 has a thickness direction parallel to the front-rear direction and is formed in a rectangular plate shape. The auxiliary piece 34 described later is formed by raising a part of the metal plate constituting the substrate 37. For this reason, in the lower half of the substrate 37, a substantially rectangular hole 30 that penetrates in the front-rear direction and is long in the left-right direction and is formed by raising the opposing piece 35 is formed.

[0027] Also, the substrate 37 is provided with a plurality of positioning pieces 39. Two of the plurality of positioning pieces 39 are respectively provided at the left and right ends of the upper end of the substrate 37, and the other two positioning pieces 39 are respectively provided at the left and right ends of the lower end of the substrate 37. Each positioning piece 39 protrudes forward from the upper part or the lower end of the substrate 37.

[0028] Also, a plurality of fixing holes 40, 41 are provided in the substrate 37. As shown in FIG. 4, fixing tools 91, 92 made of nails or screws are inserted into the respective fixing holes 40, 41, and the substrate 37 is fixed to the wall base 2 by driving the respective fixing tools 91, 92 into the wall base 2. One of the plurality of fixing holes 40, 41, the fixing hole 40, is formed at a substantially central portion in the left-right direction of the substrate 37 in a front view (viewed from the front). Two of the plurality of fixing holes 40, 41, the fixing holes 41, are respectively formed at positions to the left and right of the central portion in the left-right direction of the substrate 37 in a front view. The plurality of fixing holes 40, 41 are formed to penetrate the substrate 37 in the thickness direction at a position above the hole 30. Also, the fixing holes 41 to the left and right of the central fixing hole 40 are located above.

[0029] The auxiliary piece 34 is provided below the central portion in the vertical direction of the substrate 37. The auxiliary piece 34 protrudes forward from the lower edge portion of the hole 30. The tip of the auxiliary piece 34 is formed as an engaging portion 341 that protrudes upward.

[0030] <Assembly of the fixture> The fastener 3 of this embodiment is formed by combining a fastener main body 3a and an auxiliary member 3b. As shown in Figs. 1A and 1B, the auxiliary member 3b is disposed on the rear side of the fastener main body 3a. In other words, the fastener main body 3a is disposed on the front side of the auxiliary member 3b. The hole 20 of the fastener main body 3a and the hole 30 of the auxiliary member 3b are disposed opposite each other in the front-rear direction. The auxiliary piece 34 of the auxiliary member 3b passes through the hole 20 and protrudes forward beyond the fixing part 31. The engagement part 341 at the tip of the auxiliary piece 34 is located below (almost directly below) the upward piece 32 and the downward piece 33.

[0031] Furthermore, the central fixing hole 222 of the fastener main body 3a and the central fixing hole 40 of the auxiliary member 3b are disposed opposite each other in the front-to-rear direction, and the fixing holes 221 at the left and right ends of the fastener main body 3a and the left and right fixing holes 41 of the auxiliary member 3b are disposed opposite each other in the front-to-rear direction. Furthermore, the two upper positioning pieces 39 of the auxiliary member 3b are each hooked onto the upper end of the fixing portion 31 of the fastener main body 3a, and the two lower positioning pieces 39 of the auxiliary member 3b are each hooked onto the lower end of the fixing portion 31 of the fastener main body 3a.

[0032] Then, the fastener main body 3a and the auxiliary member 3b are joined by welding, riveting, etc. In this manner, the fastener main body 3a and the auxiliary member 3b are integrated to form the fastener 3.

[0033] <Wall material installation structure> The fastener 3 of this embodiment is used when forming a wall such as an exterior wall by attaching a wall material 1 such as an exterior wall material to a wall base 2. A ceramic panel, which is a hardened product of a hydraulic material containing cement, can be used as the wall material 1. The wall material 1 is for horizontal installation and is formed into a rectangular plate extending in the left-right direction (horizontal direction).

[0034] An upper solid portion 12 is formed on the upper part of the wall material 1 over approximately the entire length in the left-right direction. The upper solid portion 12 is formed from the indoor side portion (rear portion) of the upper part of the wall material 1 and protrudes upward. The upper end surface of the upper solid portion 12 is a horizontal plane, and the outdoor side surface of the upper solid portion 12 is a vertical plane. An upper recess 721 is formed in the outdoor side portion (front portion) of the upper part of the wall material 1, which is recessed downward and opens to the outdoor side. The upper recess 721 is formed over approximately the entire length of the wall material 1 in the left-right direction. The indoor side surface of the upper recess 721 is formed from the outdoor side surface (front surface) of the upper solid portion 12. A water-stopping material 85 extending in the left-right direction is attached to the outdoor side surface of the upper solid portion 12.

[0035] A lower solid portion 13 is formed on the lower part of the wall material 1 over approximately the entire length in the left-right direction. The lower solid portion 13 is formed on the indoor side (rear part) of the lower part of the wall material 1 and protrudes downward. The lower end surface of the lower solid portion 13 is a horizontal plane, and the outdoor side of the lower solid portion 13 is an inclined surface. A lower convex portion 812 is formed on the outdoor side part of the lower part of the wall material 1. The lower convex portion 812 is formed over the entire length of the wall material 1 in the left-right direction. A lower concave portion 822 is formed on the indoor side part of the lower part of the wall material 1, which is concave upward and opens to the indoor side. The lower concave portion 822 extends over the entire length of the wall material 1 in the left-right direction. The outdoor side of the lower concave portion 822 is formed by the indoor side of the lower convex portion 812. In addition, a hook recess 83 recessed upward is formed at the outdoor side end of the upper surface of the lower concave portion 822. The hook recess 83 is formed over the entire length of the wall material 1 in the left-right direction. The hook recess 83 is located in front of the lower solid portion 13 and behind the lower convex portion 812 , and is provided between the lower solid portion 13 and the lower convex portion 812 .

[0036] The wall material 1 has a plurality of hollow holes 15. The plurality of hollow holes 15 are spaces inside the wall material 1 between the upper solid portion 12 and the lower solid portion 13. Each hollow hole 15 is formed over the entire length of the wall material 1 in the left-right direction. The plurality of hollow holes 15 are formed side by side in the up-down direction at predetermined intervals. The plurality of hollow holes 15 are provided for the purpose of reducing the weight of the wall material 1, etc.

[0037] Next, a description will be given of a method for constructing the wall material 1 using the fastener 3 and the wall material 1. As shown in Fig. 4, the fastener 3 of this embodiment is attached to a wall base 2 and holds the opposing ends of two wall materials 1a and 1b adjacent in the vertical direction.

[0038] First, the worker moves the fastener 3 downward from above the lower wall material 1b whose lower part is fixed or temporarily fixed to the wall base 2, and inserts the receiving pieces 51, 52 located below the facing piece 35 of the fastener 3 between the lower wall material 1b and the wall base 2, while arranging the fixing part 31 of the fastener 3 along the outdoor side surface (front surface) of the wall base 2. As a result, the receiving pieces 51, 52 located below the facing piece 35 of the fastener 3 are arranged along the rear surface (indoor side surface) 11 of the lower wall material 1b, and the pair of downward pieces 33 of the fastener 3 are arranged along the outdoor side surface of the upper solid part 12 of the lower wall material 1b.

[0039] Also, a slit 14 is formed in the lower wall material 1b, and the auxiliary piece 34 of the fastener 3 is inserted into this slit 14. The slit 14 can be formed in the lower wall material 1b before the lower wall material 1b is fixed or temporarily fixed to the wall base 2. The slit 14 is formed at a position where the fastener 3 is to be arranged. The slit 14 is formed to a size that allows the auxiliary piece 34 to be inserted. That is, the left-right dimension of the slit 14 is slightly larger than the left-right dimension of the auxiliary piece 34, and the up-down dimension of the slit 14 is slightly larger than the up-down dimension of the auxiliary piece 34. Also, the slit 14 extends in the front-rear direction, and the front end of the slit 14 reaches the hollow hole 15 of the lower wall material 1b, and the rear end of the slit 14 opens into the rear surface 11 of the lower wall material 1b that faces the front surface of the wall base 2. The hollow hole 15 to which the slit 14 communicates is the hollow hole 15 located at the top among the multiple hollow holes 15. Of the plurality of hollow holes 15, the uppermost hollow hole 15 is closest to the upper solid portion 12. In the lower wall material 1b, a portion immediately above the slit 14 is formed as an auxiliary solid portion 16.

[0040] Then, the auxiliary piece 34 of the fastener 3 attached to the lower wall material 1b is inserted into the slit 14 from the opening at the rear end. At this time, the front part of the auxiliary piece 34 (the part that protrudes forward beyond the receiving pieces 51, 52) is inserted into the slit 14. In addition, the engagement part 341 at the tip of the auxiliary piece 34 reaches forward of the front end of the slit 14 and is located inside the hollow hole 15.

[0041] Next, the worker inserts the fasteners 91, 92 from the outdoor side into the fixing holes 221, 222 of the fixing portion 31 and the fixing holes 40, 41 of the base plate 37, and hammers them into the wall base 2, thereby fixing the fasteners 3 to the wall base 2. At this time, the protrusions 43 of the fasteners 3 bite into the outdoor side surface of the upper solid portion 12, thereby suppressing rattling of the lower wall material 1b.

[0042] Next, the worker moves the upper wall material 1a from above the fastener 3 downward, and inserts it between the upward piece 32 of the fastener 3 and the receiving piece 52 located above the opposing piece 35. As a result, the receiving piece 52 located above the opposing piece 35 of the fastener 3 is arranged along the rear surface (indoor side surface) of the upper wall material 1a. Also, the upward piece 32 of the fastener 3 is inserted into the hook recess 83 of the upper wall material 1a, and the upward piece 32 contacts the upper surface of the hook recess 83. Also, the lower convex part 812 of the upper wall material 1a is arranged in the upper concave part 721 of the lower wall material 1b, and the upper solid part 12 of the lower wall material 1b is arranged in the lower concave part 822 of the upper wall material 1a. That is, the lower end part of the upper wall material 1a is joined to the upper end part of the lower wall material 1b by a mating joint. Also, the water-stopping material 85 stops water between the upper solid part 12 and the lower convex part 812.

[0043] In this manner, a plurality of wall materials 1 are arranged vertically and horizontally and attached to the front of the wall base 2, thereby forming a wall such as an exterior wall.

[0044] In the mounting structure of the wall material 1 according to this embodiment, as shown in Fig. 4, the upward piece 32 of the fastener 3 is disposed in the hook recess 83. The upward piece 32 contacts the upper surface of the hook recess 83 and supports the upper wall material 1a from below. The upward piece 32 is hooked on the lower solid part 13 that constitutes the indoor side of the hook recess 83, thereby restricting the movement of the lower part of the upper wall material 1a toward the outdoor side. The receiving piece 36 is in elastic contact with the lower surface of the lower solid part 13. The lower solid part 13 is fitted between the upward piece 32 of the fastener 3 and the receiving piece 52 that is located above the facing piece 35.

[0045] In the mounting structure of the wall material 1 of this embodiment, each downward piece 33 of the fastener 3 faces the outdoor side of the upper solid part 12 of the lower wall material 1b. The protrusion 43 formed on each downward piece 33 of the fastener 3 contacts the outdoor side (front) of the upper solid part 12, so that each downward piece 33 is hooked on the outdoor side of the upper solid part 12. The part of the fixing part 31 of the fastener 3 above the facing piece 35 is disposed above the lower wall material 1b. The movement of the lower wall material 1b toward the indoor side is restricted by the receiving pieces 51, 52 located below the facing piece 35 of the fastener 3. Moreover, the upward movement of the lower wall material 1b is restricted by the facing piece 35. Moreover, the movement of the lower wall material 1b toward the outdoor side is restricted by each downward piece 33 of the fastener 3. The pair of downward piece 33 and upward piece 32 of fastener 3 are covered on the outdoor side by a lower convex portion 812 .

[0046] In the mounting structure of the wall material 1 of this embodiment, the fastener 3 is provided with an auxiliary piece 34, and the auxiliary piece 34 is inserted into the slit 14 of the lower wall material 1b. Under normal circumstances (when the wall material 1 is not heated to a high temperature, such as when there is no fire), the auxiliary piece 34 is away from the auxiliary solid portion 16, and the lower wall material 1b is not caught by the auxiliary piece 34. On the other hand, when a fire occurs, the wall material 1 is exposed to high temperatures, and thermal contraction occurs. If the lower wall material 1b is displaced downward due to thermal contraction, the downward piece 33 may come off from the upper solid portion 12. However, in this embodiment, even if the lower wall material 1b is displaced downward due to thermal contraction, the auxiliary piece 34 comes into contact with the lower surface of the auxiliary solid portion 16 and supports the lower wall material 1b, so that the downward piece 33 is less likely to come off from the upper solid portion 12. Furthermore, the engaging portion 341 of the auxiliary piece 34 catches on the opening edge of the slit 14 on the hollow hole 15 side, and can restrict the movement of the lower wall material 1b forward (toward the outdoors). This makes it difficult for the lower wall material 1b to fall off from the wall base 2. Furthermore, because the lower wall material 1b is less likely to fall off, the lower wall material 1b can more easily support the upper wall material 1a, and the upper wall material 1a is also less likely to fall off.

[0047] In order to prevent the lower wall material 1b from falling off from the downward piece 33, it is preferable that the dimension from the lower end of the downward piece 33 to the upper surface of the upper solid portion 12 is longer than the distance between the auxiliary piece 34 and the auxiliary solid portion 16.

[0048] (Modification) The embodiment is merely one of various embodiments of the present disclosure. The embodiment can be modified in various ways depending on the design and the like as long as the object of the present disclosure can be achieved.

[0049] In the embodiment, the fastener 3 is described as being formed by combining the fastener body 3a and the auxiliary member 3b, which are separate members. However, this is not limited to this, and the fastener 3 may be a member in which the upward piece 32, the downward piece 33, and the auxiliary piece 34 are integrally formed in the fixing portion 31.

[0050] In the embodiment, the wall material 1 is a ceramic panel, but the present invention is not limited to this, and for example, the wall material 1 may be metal siding. In the embodiment, the upper wall material 1a and the lower wall material 1b are the same type, but the present invention is not limited to this, and the upper wall material 1a and the lower wall material 1b may be different types of wall materials having different colors, patterns, designs, and shapes.

[0051] In the embodiment, the fastener 3 may be provided in a plurality of rows in the left-right direction on one lower wall material 1b, or only one fastener may be provided. Also, the fastener 3 of the present embodiment and a normal fastener (a fastener without the auxiliary piece 34) may be used in combination.

[0052] In the embodiment, the wall material 1 has the hollow hole 15, but the present invention is not limited to this, and a wall material 1 that does not have the hollow hole 15 may be used. In the embodiment, the slit 14 is formed so as to communicate with the hollow hole 15, but the present invention is not limited to this, and the slit 14 may be formed at a position that does not communicate with the hollow hole 15. The slit 14 may be formed in correspondence with the position where the fastener 3 of the wall material 1 is to be disposed, or may be formed over the entire length of the wall material 1 in the left-right direction.

[0053] (summary) As described above, the first aspect is a fastener 3 for attaching a wall material 1 to a wall base 2, and comprises a fixing part 31 fixed to the wall base 2, a downward piece 33 hooked onto an upper solid part 12 provided at the upper end of the wall material 1, and an auxiliary piece 34 positioned below the downward piece 33 and inserted into the wall material 1 below the upper solid part 12.

[0054] According to this embodiment, in addition to the downward piece 33, the auxiliary piece 34 can also be caught on the wall material 1, which has the advantage that the wall material 1 is unlikely to fall off even if it is thermally contracted.

[0055] The second embodiment is the same as the first embodiment, but has a fastener body 3a having a fixing portion 31 and a downward piece 33, and an auxiliary member 3b having an auxiliary piece .

[0056] According to this embodiment, the fastener main body 3a and the auxiliary member 3b can be produced in separate steps, which has the advantage that the fastener main body 3a and the auxiliary member 3b can be produced easily.

[0057] In the third embodiment, in the first or second embodiment, the auxiliary piece 34 is inserted into a slit 14 that opens into the rear surface 11 of the wall material 1 that faces the wall base 2 .

[0058] According to this embodiment, by inserting the auxiliary piece 34 into the slit 14, the auxiliary piece 34 can be inserted into the wall material 1, which has the advantage of facilitating installation.

[0059] The fourth aspect is a structure in which a wall material 1 is attached to a wall base 2 using a fastener 3 of any one of the first to third aspects, in which the downward piece 33 and the auxiliary piece 34 are positioned in front of the wall base 2 by fixing the fixing portion 31 to the wall base 2, the downward piece 33 is hooked onto an upper solid portion 12 provided at the upper end of the lower wall material 1b of two wall materials 1 arranged vertically in front of the wall base 2, and the auxiliary piece 34 is inserted into a slit 14 provided in the wall material 1b below the upper solid portion 12.

[0060] According to this embodiment, in addition to the downward piece 33, the auxiliary piece 34 can also be caught on the wall material 1, which has the advantage that the wall material 1 is unlikely to fall off even if it is thermally contracted.

[0061] In the fifth embodiment, the wall material 1 in the fourth embodiment has a hollow hole 15 extending laterally inside, and the slit 14 reaches from the rear surface 11 of the wall material 1 facing the wall base 2 to the hollow hole 15.

[0062] According to this embodiment, there is an advantage that the slit 14 can be easily formed by utilizing the hollow hole 15. [Explanation of symbols]

[0063] 1. Wall materials 1a Upper wall material 1b Lower wall material 11 Rear 12 Upper part 14 Slit 15 Hollow hole 2. Wall foundation 3 Fastener 3a Fastener body 3b Auxiliary parts 31 Fixed part 33 Downward piece 34 Auxiliary piece

Claims

1. A fastener for attaching a wall material to a wall substrate, A fixing portion fixed to the wall base; A downward piece that is hooked onto an upper solid portion provided at the upper portion of the wall material; An auxiliary piece located below the downward piece and inserted into the wall material below the upper solid portion; Equipped with Fastener.

2. A fastener body including the fixing portion and the downward piece; An auxiliary member having the auxiliary piece; having The fastener of claim 1.

3. The auxiliary piece is inserted into a slit that opens on a rear surface of the wall material that faces the wall base. The fastener of claim 1.

4. A structure for attaching a wall material to a wall substrate using the fastener according to any one of claims 1 to 3, The downward piece and the auxiliary piece are positioned in front of the wall base by fixing the fixing portion to the wall base, The downward piece is hooked onto an upper solid portion provided at the upper portion of the lower wall material of two wall materials arranged vertically in front of the wall base, The auxiliary piece is inserted into a slit provided in the wall material below the upper solid portion. Wall material mounting structure.

5. The wall material has a hollow hole extending laterally therein, The slit extends from a rear surface of the wall material facing the wall base to the hollow hole. The wall material mounting structure according to claim 4.

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