External wall service

Abstract

To improve workability for an outer wall accessory disposed on an internal corner of an outer wall.SOLUTION: An outer wall accessory has a base material fixed to an outer wall base part and a cover material to cover a clearance between internal corner side end faces of an exterior panel. The base material has a first fixing piece and a second fixing piece, which are fixed to a fitting surface of the outer wall base part, and an engaging groove disposed between the fixing pieces. The cover material has a first cover part and a second cover part, which are disposed along an outside surface of the exterior panel, and an engaging piece disposed on the inside surface of the cover parts. The engaging piece has a pair of legs, which are disposed on the inside surface of the cover part in parallel so as to be spaced away in a cover width direction and protrude toward the base material so as to be separated away from each other toward tips, and a claw part that is formed by being bent outward at the tip. The engaging groove has an opening into which the legs can be inserted, and an engaging protrusion protruding on an inside edge of the opening. Claw engaging surface of the engaging protrusion is formed orthogonal to an insertion direction of the engaging piece.SELECTED DRAWING: Figure 2

Description

【Technical Field】 【0001】 The present invention relates to an exterior fixture provided at the corner of the outer wall of a building. 【Background Art】 【0002】 When installing exterior panels on the outer walls of buildings such as detached houses and commercial facilities, exterior fixtures for covering the gaps that occur at the corners of the outer walls have been proposed (for example, Patent Document 1). 【0003】 The exterior fixture of Patent Document 1 consists of a base material and a cover material. The base material is fixed to the outer wall body at the corner, and the cover material is engaged with the base material from the outside of the exterior panel, thereby being attached to the corner. Specifically, the base material has a pair of left and right fixing pieces bent in a substantially Z shape, a recess formed between the fixing pieces, and a pair of left and right protrusions (claw pieces) protruding inside the opening end of the recess, and the fixing pieces are fixed along the outer wall body. On the other hand, the cover material has a V-shaped plate-like surface part (cover part), a pair of left and right legs protruding from the center of the inner surface of the surface part, and claw parts bent at the tips of the legs. By inserting the legs into the recess at the center of the base material and fitting the claw parts onto the protrusions inside the recess, the cover material is engaged and held by the base material. 【Prior Art Documents】 【Patent Documents】 【0004】 【Patent Document 1】 [[ID=2​​​​​​​​​In the exterior wall fitting described in Patent Document 1, the projection is formed to protrude diagonally from the inside of the opening end toward the bottom of the recess (groove bottom), and once the claw portion is fitted into the projection, the claw portion and projection are firmly engaged and held together. Therefore, for example, if the leg portion of the cover material is not inserted into the recess of the base material in the correct orientation, and as a result only one claw portion is fitted and fixed into the projection while the other claw portion is not fitted into the projection, resulting in a so-called one-sided fit, the cover material will be fixed in that state, and there is a risk that it will become impossible to move the cover material further to the correct mounting state. 【0006】 This invention was made in view of the above-mentioned problems, and aims to improve the workability of exterior wall fittings installed in the inner corners of the exterior walls of buildings. [Means for solving the problem] 【0007】 To solve the above problems, the exterior wall fittings of the present invention employ the following technical means. 【0008】 The exterior wall fitting of the present invention is an exterior wall fitting installed in the inner corner of the exterior wall of a building, and the base of the exterior wall The structure comprises a base material fixed to the exterior wall base, and a cover material covering the gap between the corner-side end faces of the first exterior panel and the second exterior panel constituting the corner, wherein the base material includes a first fixing piece fixed to a first mounting surface of the exterior wall base facing the first exterior panel, a second fixing piece fixed to a second mounting surface of the exterior wall base facing the second exterior panel, and an engagement groove provided between the first and second fixing pieces for engaging and holding the cover material. The groove frame portion that constitutes the outer casing of the engagement groove,The cover material comprises a first cover portion arranged along the outer surface of the first exterior panel, a second cover portion arranged along the outer surface of the second exterior panel, and an engaging piece provided on the inner surfaces of the first and second cover portions and inserted into the engaging groove, the engaging piece having a pair of legs extending in the cover length direction along the inner surfaces of the first and second cover portions and arranged side by side spaced apart in the cover width direction, projecting toward the base material side so as to move away from each other towards the tip, and a claw portion formed at the tip that is folded back outward in the cover width direction, the engaging groove having an opening into which both of the legs can be inserted, and an engaging projection projecting along the inner edge of the opening for engaging and holding the claw portion, The groove frame portion comprises a first bottom surface portion that constitutes the first surface portion of the groove bottom of the engagement groove and is capable of contacting the first mounting surface, a second bottom surface portion that constitutes the second surface portion of the groove bottom and is capable of contacting the second mounting surface, and extending inward in the cover width direction from the first bottom surface portion and the second bottom surface portion, The insertion direction of the engaging piece into the engaging groove is perpendicular to the direction of insertion of the engaging piece. Extend at that angle So It has a pair of engagement surfaces that become the claw engagement surfaces of the engagement projection. It is characterized by having this feature. [Effects of the Invention] 【0010】 According to the exterior wall fitting of the present invention, even when the claw portion of the engaging piece engages with the engaging projection of the engaging groove, the relative position between the claw portion and the engaging projection can be changed along the claw engagement surface. Therefore, even if there is a misalignment in the insertion direction of the engaging piece into the engaging groove, the cover material can be properly engaged with the base material. This significantly improves workability. [Brief explanation of the drawing] 【0011】 [Figure 1] This is a downward-view cross-sectional view 1 showing the installation state of the exterior wall fittings according to the embodiment. [Figure 2] This is a downward-view cross-sectional view 2 showing the installation state of the exterior wall fittings according to the embodiment. [Figure 3] This is a downward view of the base material and cover material. [Figure 4] These are rear view (a), side view (b), and bottom view (c) of the base material. [Figure 5] These are rear view (a), side view (b), and bottom view (c) of the cover material. [Figure 6](a) is a downward view showing the legs in close proximity, and (b) is a downward view showing the legs separated. [Modes for carrying out the invention] 【0012】 The exterior wall fittings according to the present invention will be described below with reference to the drawings. The embodiments described below are merely examples of the present invention, and their specific examples do not limit the configuration of the present invention. 【0013】 As shown in Figures 1 and 2, the exterior wall fitting 1 according to an embodiment of the present invention is an exterior member installed in the inner corner C of the exterior wall of a building such as a detached house or commercial facility, and comprises a base material 2 and a cover material 3. The base material 2 is fixed to the exterior wall base 4A, 4B. The cover material 3 is fixed to the base material 2 from the outside of the exterior panels 5A, 5B. 【0014】 In this embodiment, the exterior wall bases 4A and 4B are furring strips fixed to columns (not shown) of the exterior wall, and are arranged at approximately right angles to two sides of the columns. More specifically, the exterior wall bases 4A and 4B are arranged at approximately right angles to the two sides of the columns that face the inner corner C, with their side end faces in contact with each other. 【0015】 In this embodiment, the corner apex P of the nearly right-angled section formed by joining the outer wall bases 4A and 4B as described above (the intersection where the extended surfaces of the outer surfaces 6A and 6B of the outer wall bases 4A and 4B intersect) is defined as the central part of the inner corner C, and the recessed direction of the corner apex P (the vertical direction in Figures 1 and 2) is defined as the front-to-back direction. Furthermore, the direction perpendicular to the reference line X extending in the front-to-back direction through the corner apex P in Figures 1 and 2 (the left-to-right direction in Figures 1 and 2) is defined as the left-to-right direction, and the directions perpendicular to the front-to-back direction and the left-to-right direction, respectively, are defined as the up-to-down direction. 【0016】 In this embodiment, the exterior panels 5A and 5B have an aluminum-zinc alloy plated steel sheet on the surface. It is a metal siding composed of a metal plate such as a stainless steel plate, with a foamed heat insulating material such as polyisocyanurate foam or polyurethane attached to the back surface, and further covered with aluminum foil or the like from the back surface side of the foamed heat insulating material to be integrally formed. Although not shown, the exterior panels 5A and 5B are formed in a substantially flat plate shape that is long in one direction, and are supported and fixed side by side vertically on the outer surfaces 6A and 6B of the outer wall bases 4A and 4B in a horizontal orientation with their longitudinal direction aligned with the horizontal direction. That is, the exterior panels 5A and 5B are installed horizontally with respect to the outer wall bases 4A and 4B. 【0017】 A predetermined gap 10 is defined between the inner corner side end face 9 of the first exterior panel 5A arranged on the left side of the reference line X and the inner corner side end face 9 of the second exterior panel 5B arranged on the right side of the reference line X. That is, the first exterior panel 5A and the second exterior panel 5B are arranged at a substantially right angle with a predetermined gap 10 therebetween. 【0018】 Note that the exterior fixture 1 according to the present invention is not only applicable to an outer wall in which the exterior panels 5A and 5B are composed of metal siding as described above. That is, the exterior fixture 1 according to the present invention may be applicable to, for example, an outer wall in which the exterior panels 5A and 5B are made of a ceramic siding made of cement, fibrous material, etc., a resin siding made of resin, fibrous material, etc., a wooden siding, etc. Also, the exterior fixture 1 according to the present invention is not only applicable to an outer wall in which the exterior panels 5A and 5B are installed horizontally. That is, the exterior fixture 1 according to the present invention may be applicable to, for example, an outer wall in which the exterior panels 5A and 5B are installed vertically (vertically) on the outer wall bases 4A and 4B. Also, the exterior panels 5A and 5B are usually formed with a longitudinal dimension of about 1000 mm to 5000 mm. Also, most of the exterior panels 5A and 5B have uneven patterns 8 such as waveforms, ridges, and steps formed on the outer surface 7, and the pattern depth H1 of the uneven pattern 8 is formed to be about 0.2 mm to 7.0 mm. 【0019】 The base material 2 is a plate material formed by bending a thin metal plate that is long in one direction into a deformed cross-section through bending or other processes, and the dimension in the longitudinal direction is usually formed to be about 1000 mm to 5000 mm. The base material 2 is vertically fixed to the outer wall bases 4A and 4B in a vertical orientation with its longitudinal direction aligned with the extending direction (vertical direction) of the corner top P. Note that the base material 2 is constructed in a plurality of vertical rows according to the length of the corner top P of the outer wall bases 4A and 4B. Also, in this case, one base material 2 may be cut in the short direction according to the length of the corner top P and used. 【0020】 The base material 2 is preferably formed of a metal plate. Also, one type such as iron, aluminum, copper, stainless steel, titanium, or an aluminum-zinc alloy-plated steel plate is used for the metal plate. Further, the base material 2 may be formed not only by bending but also by roll forming, press forming, extrusion forming, notch processing, or the like. Furthermore, the base material 2 may be formed of a synthetic resin material such as vinyl chloride resin or polycarbonate resin. 【0021】 As shown in FIGS. 1 to 4, the base material 2 is formed in a bilaterally symmetric shape about the reference line X. Also, the base material 2 has a first fixing piece 21A, a second fixing piece 21B, and a groove frame portion 22, and is arranged along the corner top P by overlapping and fixing the first fixing piece 21A and the second fixing piece 21B to the outer side surfaces 6A and 6B of the outer wall bases 4A and 4B, respectively. Note that the first fixing piece 21A and the second fixing piece 21B may be fixed to the outer wall bases 4A and 4B by fixing nails N as described later, or may be fixed to the outer wall bases 4A and 4B by tapping screws, tacker pins, or the like. Alternatively, they may be fixed to the outer wall bases 4A and 4B by other general fixing methods. 【0022】 As shown in FIG. 4, an insertion piece 23 is provided at one end (upper end) on the short side of the base material 2. When constructing a plurality of cover materials 3 in a vertical row, the insertion piece 23 of the cover material 3 arranged on the lower side is inserted into the gap between the lower end of the cover material 3 arranged on the upper side and the outer wall bases 4A and 4B. Thereby, construction can be performed in a state where the upper and lower cover materials 3 are connected. 【0023】 As shown in Figures 1 to 4, the first fixing piece 21A is formed in a roughly Z shape and is bent diagonally from the front edge of the groove frame portion 22 toward the left rear. Specifically, as shown in Figure 3, the first fixing piece 21A has an inner frame portion 24a extending from the rear edge of the groove frame portion 22 toward the left rear with respect to the reference line X, an upright portion 24b extending from the left rear edge of the inner frame portion 24a toward the left front with respect to the reference line X at a nearly right angle to the inner frame portion 24a, and an outer frame portion 24c extending from the left front edge of the upright portion 24b toward the left rear with respect to the reference line X at a nearly parallel angle to the inner frame portion 24a. In addition, a folded portion 24d is formed at the leading edge (left rear edge) of the outer frame portion 24c. 【0024】 The second fixing piece 21B is constructed symmetrically with respect to the first fixing piece 21A with respect to the reference line X. That is, the second fixing piece 21B is formed in a roughly Z shape by folding it at approximately right angles in two places, and, like the first fixing piece 21A, has an inner frame portion 24a, an upright portion 24b, and an outer frame portion 24c. In addition, a folded portion 24d is formed at the leading edge (right rear edge) of the outer frame portion 24c. 【0025】 As shown in Figures 1 and 2, the outer frame portion 24c of the first fixing piece 21A is positioned facing the outer surface (first mounting surface) 6A of the first exterior wall base 4A located on the left side of the inner corner C, and is fixed to the first exterior wall base 4A with fixing nails N. On the other hand, the outer frame portion 24c of the second fixing piece 21B is positioned facing the outer surface (second mounting surface) 6B of the second exterior wall base 4B located on the right side of the inner corner C, and is fixed to the second exterior wall base 4B with fixing nails N. The first exterior panel 5A is positioned facing the outer frame portion 24c of the first fixing piece 21A from its outer surface 25 side, and the second exterior panel 5B is positioned facing the outer frame portion 24c of the second fixing piece 21B from its outer surface 25 side. Accordingly, the outer frame portion 24c of the first fixing piece 21A is fixed between the first outer wall base 4A and the first exterior panel 5A, and the outer frame portion 24c of the second fixing piece 21B is fixed between the second outer wall base 4B and the second exterior panel 5B. At the same time, the first exterior panel 5A and the second exterior panel 5B are positioned and held in place by their inner corner end faces 9 contacting the respective upright portions 24b of the first fixing piece 21A and the second fixing piece 21B. 【0026】 As shown in Figures 1 to 4, the folded portion 24d is formed by bending from the leading edge of the outer frame portion 24c toward the right front (inward) toward the outer surface 25. The first fixing piece 21A and the second fixing piece 21B have a predetermined bending strength ensured by this folded portion 24d and the upright portion 24b. 【0027】 The groove frame portion 22 is formed by bending in a substantially V-shape. More specifically, the groove frame portion 22 is formed in a substantially V-shape with a cross-section that is symmetrical on both sides with respect to the reference line X, and has a first bottom portion 22a that constitutes the left side and a second bottom portion 22b that constitutes the right side. Furthermore, engagement surfaces 22c that serve as claw engagement surfaces are formed on the left rear edge of the first bottom portion 22a and the right rear edge of the second bottom portion 22b. In addition, the corner apex (bent end) 22R between the first bottom portion 22a and the second bottom portion 22b is located on the reference line X. 【0028】 The first bottom portion 22a extends to the left rear of the reference line X, on the same plane as the outer frame portion 24c of the first fixing piece 21A, on the left side of the reference line X. That is, the first bottom portion 22a, together with the outer frame portion 24c of the first fixing piece 21A, constitutes the left side of the base material 2. On the other hand, the second bottom portion 22b extends to the right rear of the reference line X, on the same plane as the outer frame portion 24c of the second fixing piece 21B, on the right side of the reference line X. That is, the second bottom portion 22b, together with the outer frame portion 24c of the second fixing piece 21B, constitutes the right side of the base material 2. Therefore, when the base material 2 is fixed to the outer wall bases 4A and 4B as described above, the first bottom surface 22a is held in surface contact with the outer surface 6A of the first outer wall base 4A together with the outer frame 24c of the first fixing piece 21A, and the second bottom surface 22b is held in surface contact with the outer surface 6B of the second outer wall base 4B together with the outer frame 24c of the second fixing piece 21B. At this time, the base material 2 is fixed to the outer wall bases 4A and 4B with the corner apex (bent end) 22R between the first bottom surface 22a and the second bottom surface 22b substantially coinciding with the corner apex P of the outer wall bases 4A and 4B. Note that the groove frame 22 may have its corner apex 22R formed as an arc-shaped convex surface or a flat surface (so-called C-surface) as long as the base material 2 can be stably fixed to the outer wall bases 4A and 4B without rattling. 【0029】 The engaging surface portion 22c extends from the left rear edge of the first bottom surface portion 22a and the right rear edge of the second bottom surface portion 22b toward the reference line X at an angle perpendicular to the reference line X. In this way, a recessed portion in the shape of a roughly right-angled isosceles triangle is defined in the center between the left and right sides of the base material 2 by the first bottom surface portion 22a, the second bottom surface portion 22b, and the left and right engaging surface portions 22c, and this recessed portion becomes an engaging groove 26 capable of engaging and holding the cover material 3. That is, the groove frame portion 22 constitutes the outer casing of the engaging groove 26. 【0030】 A predetermined gap is defined between the ends of the engaging surface portion 22c on the reference line X side. That is, the engaging groove 26 has an opening 27 at the rear. The inner frame portion 24a of the first fixing piece 21A is connected to the engaging surface portion 22c on the left side (first bottom surface portion 22a side) of the groove frame portion 22, and an engaging projection 30 is formed on the left rear edge of the groove frame portion 22. The inner frame portion 24a of the second fixing piece 21B is connected to the engaging surface portion 22c on the left side (second bottom surface portion 22b side) of the groove frame portion 22, and an engaging projection 30 is formed on the right rear edge of the groove frame portion 22. In this way, the left and right rear edges (inner edges of the opening 27) of the groove frame portion 22 are each provided with engaging projections 30 that protrude diagonally forward toward the reference line X side, and the gap between these engaging projections 30 becomes the opening 27 of the engaging groove 26. 【0031】 As described above, the bottom surfaces 22a and 22b of the groove frame portion 22 are connected to the inner frame portions 24a of the fixing pieces 21A and 21B via the engaging surface portion 22c, and the engaging projection 30 is formed by these engaging surface portions 22c and inner frame portions 24a. That is, the groove frame portion 22, the engaging projection 30, the first fixing piece 21A, and the second fixing piece 21B are integrally formed from a single plate material. 【0032】 As shown in Figures 1 to 3 and Figure 5, the cover material 3 is a thin metal plate that is long in one direction and formed into an irregular cross-section by bending or other processes. It is engaged and fixed to the base material 2 in a vertical orientation with its longitudinal direction aligned with the extending direction of the corner apex P of the exterior wall bases 4A and 4B. Multiple cover materials 3 are installed in a vertical arrangement according to the vertical length of the gap 10 between the inner corner end faces 9 of the exterior panels 5A and 5B. Alternatively, one cover material 3 may be cut in the shorter direction to match the vertical length of the gap 10. 【0033】 The cover material 3 is preferably formed from a metal plate. The metal plate can be made from materials such as iron, aluminum, copper, stainless steel, titanium, or aluminum-zinc alloy plated steel. More preferably, the cover material 3 is made from aluminum-zinc alloy plated steel or aluminum-zinc alloy plated steel with magnesium added for rust prevention. It is preferable that the cover material 3 be made from the same material as the metal plate on the surface of the exterior panels 5A and 5B, considering the appearance of the exterior wall. Furthermore, the cover material 3 may be formed not only by bending, but also by roll forming, press forming, extrusion forming, notching, etc. Additionally, the cover material 3 may be made from synthetic resin materials such as polyvinyl chloride resin or polycarbonate resin. 【0034】 As shown in Figures 1 to 3 and Figure 5, the cover material 3 is formed in a symmetrical shape with respect to the reference line X. The cover material 3 also has a first cover portion 31A, a second cover portion 31B, and an engaging piece 32. By engaging the engaging piece 32 with the groove frame portion 22 of the base material 2, the cover material 3 is positioned to cover the gap 10 from the rear (outside the outer wall). 【0035】 As shown in Figure 5, an insertion piece 33 is provided at the upper end of the shorter side of the cover material 3. Furthermore, a notch 34 is provided at the lower end. When installing multiple cover materials 3 in a vertical line, the lower cover material 3 is inserted into the notch 34 of the upper cover material 3 by inserting the insertion piece 33 into it. In this way, the upper and lower cover materials 3 are installed in a connected state. 【0036】 A watertight material 36 is attached to the inner surface (front surface) 35 of the first cover portion 31A and the second cover portion 31B, respectively. The watertight material 36 is a strip made of a highly elastic and waterproof material such as ethylene propylene rubber foam, foamed urethane resin, or silicone resin. When the cover material 3 is attached to the base material 2, the watertight material 36 is tightly fitted along the outer surface 7 of the exterior panels 5A and 5B. This prevents rainwater from entering the interior of the exterior wall through the gap 10. 【0037】 As shown in Figures 1 and 3, the first cover portion 31A extends diagonally from the reference line X toward the left rear. On the other hand, the second cover portion 31B extends from the reference line X toward the right rear, symmetrically to the first cover portion 31A, with the reference line X as the center. That is, the first cover portion 31A and the second cover portion 31B are arranged at approximately right angles to each other so that they can face and abut against the outer surfaces 7 of the exterior panels 5A and 5B, respectively. 【0038】 Furthermore, the first cover portion 31A and the second cover portion 31B are positioned facing the respective outer surfaces 7 of the first exterior panel 5A and the second exterior panel 5B when the cover material 3 is engaged and fixed to the base material 2. Therefore, when the cover material 3 is engaged and fixed to the base material 2, the watertight material 36 attached to the inner surfaces 35 of the cover portions 31A and 31B are in close contact with the outer surfaces 7 of the exterior panels 5A and 5B, respectively. 【0039】 Furthermore, the first cover portion 31A has an outer surface portion 41 extending from the reference line X toward the left rear, and an inner surface portion 42 that is folded back at the left rear edge of the outer surface portion 41 and positioned facing the inside (front side) of the outer surface portion 41. The second cover portion 31B also has an outer surface portion 41 extending from the reference line X toward the right rear, and an inner surface portion 42 that is folded back at the right rear edge of the outer surface portion 41 and positioned facing the inside (front side) of the outer surface portion 41. In other words, the first cover portion 31A and the second cover portion 31B are formed in a double-plate shape by folding a plate body inward. 【0040】 The right front edge (the end on the reference line X side) of the outer surface portion 41 of the first cover portion 31A is connected to the left front edge (the end on the reference line X side) of the outer surface portion 41 of the second cover portion 31B. In other words, the outer surface portions 41 of the cover portions 31A and 31B are bent at approximately a right angle to each other on the reference line X. 【0041】 The inner surface portion 42 extends from the left and right rear edges of the outer surface portion 41 to a position near the reference line X, that is, near the bend between the outer surface portions 41. The engaging piece 32 is formed by bending at the end of the inner surface portion 42 on the reference line X side. The engaging piece 32 is a pair of roughly J-shaped plate pieces arranged opposite each other on the left and right sides, and has a pair of leg portions 51 provided on the left and right sides of the reference line X at the end of the inner surface portion 42 on the reference line X side, and a claw portion 52 formed by folding back at the tip of the leg portion 51. 【0042】 The legs 51 extend longitudinally (in the direction of the cover length) along the front edge of the inner surface portion 42. The legs 51 also extend diagonally forward from the front edge of the inner surface portion 42, away from the reference line X. In this embodiment, the legs 51 are bent forward and outward at an angle of 8 degrees from the extension direction of the reference line X. Thus, the left and right legs 51 each protrude forward (towards the base material 2) so that they move away from each other as they approach their tips (front ends). 【0043】 As described above, the leg portion 51 extends forward (in the direction of the protrusion of the bent portion) from the front edge portion (front edge portion of the inner surface portion 42) of the V-shaped bent cover portion 31A, 31B. Therefore, if stress is applied to the left and right side edges of the cover portion 31A, 31B in a direction that bends them inward and rearward, the leg portion 51 will tilt in a direction that moves it away from each other in conjunction with that stress. On the other hand, if stress is applied to the left and right side edges of the cover portion 31A, 31B in a direction that bends them outward and frontward, the leg portion 51 will tilt in a direction that moves it closer to each other in conjunction with that stress. 【0044】 The claw portion 52 is formed by folding back from the tip (front end) of the leg portion 51 in the left-right direction (cover width direction). In this embodiment, the claw portion 52 is formed to protrude outward from the tip of the leg portion 51 in the left-right direction at an angle of 22 degrees inclined to the direction in which the leg portion 51 extends, that is, it is formed to protrude in a V-shape relative to the leg portion 51. 【0045】 As described above, the left and right claw portions 52 are connected to the inner surface portions 42 of the cover portions 31A and 31B via the leg portions 51. The inner surface portions 42 are connected to the outer surface portion 41. In other words, the engaging piece 32 is connected and supported to the front edge of the outer surface portion 41 via the inner surface portions 42 of the cover portions 31A and 31B. Therefore, the engaging piece 32 has a greater degree of freedom of movement compared to one that is directly connected to the inner surface of the cover portion. Furthermore, the engaging piece 32, the inner surface portion 42, and the outer surface portion 41 are integrally formed from a single plate material. 【0046】 As described above, when the legs 51 are closest to the reference line X, the distance between the tips of the claws 52 (claw width dimension) is smaller than the distance between the tips of the engaging projections 30 provided on the groove frame portion 22 of the base material 2, i.e., the width dimension of the opening 27 (opening width dimension). On the other hand, in the normal state, the distance between the tips of the claws 52 (claw width dimension) is larger than the width dimension of the opening 27 (opening width dimension). Therefore, when the engaging piece 32 is inserted into the opening 27 of the groove frame portion 22 in order to engage the cover material 3 with the base material 2, the left and right claws 52 each come into contact with the engaging projections 30 on the inside of the opening 27. Furthermore, as the engaging piece 32 is pushed further into the engaging groove 26 than the opening 27 (forward), the legs 51 are tilted inward (towards the reference line X) so that they are closer to each other. Then, when the tip of the claw portion 52 passes the tip of the engaging projection 30, the legs 51 are tilted outward (towards the opposite side of the reference line X) back to their original position so that they separate from each other. As a result, the tip of the claw portion 52 fits into the engaging surface portion 22c of the engaging projection 30. At the same time, the elastic force of the watertight material 36 is applied in a direction that pushes the cover material 3 backward, so that the tip of the claw portion 52 fits more firmly into the engaging surface portion 22c of the engaging projection 30. As a result, the cover material 3 is stably engaged and held in place by the base material 2. 【0047】 Furthermore, as shown in Figure 6, when the legs 51 of the engaging piece 32 are inserted into the engaging groove 26 as described above, they tilt in the left-right direction (inward and outward) around the central part between the cover parts 31A and 31B (the bent part between the outer surface parts 41). Consequently, the tip positions of the claws 52 of the engaging piece 32 are displaced in the front-rear direction (the extension direction of the reference line X). In contrast, the engaging surface 22c of the engaging projection 30 extends in the left-right direction (the direction perpendicular to the reference line X). Therefore, when the legs 51 of the engaging piece 32 return from a state where they are tilted inward (close together) (Figure 6(a)) to a state where they are tilted outward (separated) (Figure 6(b)), the engaging surface 22c is pressed from the front by the tips of each claw 52 that are trying to displace backward, and the reaction force pulls the cover material 3 towards the base material 2. In other words, in Figures 6(a) and 6(b), the cover material 3 is pulled towards the base material 2 fixed to the outer wall bases 4A and 4B by an amount equivalent to the distance d between the dashed lines. As a result, the cover material 3 is stably engaged and held to the base material 2. In particular, when combined with an elastic watertight material 36, the elastic force of the watertight material 36 and the reaction force of the claw portion 52 allow the cover material 3 to be engaged and held to the base material 2 more firmly and stably. 【0048】 As described above, the exterior wall fitting 1 of the above embodiment is an exterior wall fitting installed in the inner corner C of the exterior wall of a building. The fitting 1 comprises a base material 2 fixed to the exterior wall bases 4A and 4B, and a cover material 3 that covers the gap 10 between the corner-side end faces 9 of the first exterior panel 5A and the second exterior panel 5B that constitute the corner C. The base material 2 has a first fixing piece 21A fixed to the first mounting surface 6A of the exterior wall base 4A facing the first exterior panel 5A, a second fixing piece 21B fixed to the second mounting surface 6B of the exterior wall base 4B facing the second exterior panel 5B, and an engagement groove 26 provided between the first fixing piece 21A and the second fixing piece 21B to engage and hold the cover material 3. The cover material 3 has a first cover portion 31A arranged along the outer surface 7 of the first exterior panel 5A, a second cover portion 31B arranged along the outer surface 7 of the second exterior panel 5B, and the first cover portion 31A and The first cover portion 31A and the second cover portion 31B are provided on the inner surface 35 and have an engaging piece 32 that is inserted into and engaged with the engaging groove 26. The engaging piece 32 has a pair of leg portions 51 that extend in the cover length direction along the inner surface 35 of the first cover portion 31A and the second cover portion 31B, are spaced apart and arranged side by side in the cover width direction, and are formed to protrude toward the base material 2 so as to move away from each other towards the tip, and a claw portion 52 that is folded back outward in the cover width direction at the tip. The engaging groove 26 has an opening 27 into which both leg portions 51 can be inserted, and an engaging projection 30 that protrudes along the inner edge of the opening 27 and engages with and holds the claw portion 52. The claw engaging surface 22c of the engaging projection 30 into which the claw portion 52 is engaged is formed perpendicular to the direction in which the engaging piece 32 is inserted into the engaging groove 26. 【0049】 In this design, even when the claw portion 52 of the engaging piece 32 engages with the engaging projection 30 of the engaging groove 26, the relative position of the claw portion 52 and the engaging projection 30 can be changed along the claw engagement surface 22c in its extending direction, that is, in a direction perpendicular to the insertion direction of the engaging piece 32. Therefore, even if there is a misalignment in the insertion direction of the engaging piece 32 relative to the engaging groove 26, the cover material 3 can be properly engaged with the base material 2. Thus, workability is greatly improved. 【0050】 Furthermore, in the above embodiment, the bottom of the engagement groove 26 has a first bottom surface portion 22a that can abut against the first mounting surface 6A and a second bottom surface portion 22b that can abut against the second mounting surface 6B. 【0051】 In this case, the groove bottom (first bottom) that constitutes the outer casing of the engagement groove 26 surface Section 22a and the second bottom surface Since part 22b) can be held in contact with the outer surfaces 6A and 6B of the outer wall bases 4A and 4B in a face-to-face state together with the fixing pieces 21A and 21B, the base material 2 can be stably fixed to the outer wall bases 4A and 4B. This makes it possible to engage the cover material 3 with the base material 2 more appropriately and smoothly. Therefore, workability is further improved. [Explanation of Symbols] 【0052】 1 Accessories for exterior walls 2 Base material 3. Cover material 4A First exterior wall base (exterior wall base) 4B Second exterior wall base (exterior wall base) 5A First exterior panel 5B Second exterior panel 6A Outer surface of the base of the first outer wall (first mounting surface) 6B Outer surface of the base of the second outer wall (second mounting surface) 7. Exterior panel outer surface 9 Inner corner end face 10 gap 21A 1st fixed piece 21B 2nd fixed piece 22c Engagement surface (claw engagement surface) 26 Engagement groove 27 Opening 29 Inner edge of the opening 30 Engagement protrusion 31A First Cover Section 31B Second Cover Section 32 Engaging piece 35 Inner surface 44 Inner surface of the central cover 51 Legs 52 Claw part C corner

Claims

[Claim 1] An exterior wall fitting installed at the inner corner of the exterior wall of a building, comprising a base material fixed to the base of the exterior wall, and a cover material that covers the gap between the inner corner end faces of the first exterior panel and the second exterior panel that constitute the inner corner, The base material comprises a first fixing piece fixed to a first mounting surface of the outer wall base facing the first exterior panel, a second fixing piece fixed to a second mounting surface of the outer wall base facing the second exterior panel, an engagement groove provided between the first and second fixing pieces for engaging and holding the cover material, and a groove frame portion forming the outer casing of the engagement groove. The cover material comprises a first cover portion arranged along the outer surface of the first exterior panel, a second cover portion arranged along the outer surface of the second exterior panel, and an engaging piece provided on the inner surfaces of the first cover portion and the second cover portion, which is inserted into and engaged with the engaging groove. The engaging piece has a pair of legs that extend in the length direction of the cover along the inner surfaces of the first cover portion and the second cover portion, are spaced apart and arranged side by side in the width direction of the cover, and are formed to protrude toward the base material so as to move away from each other towards the tip, and a claw portion that is folded back outward in the width direction of the cover at the tip, The engagement groove has an opening into which both legs can be inserted, and an engagement projection that protrudes along the inner edge of the opening and engages with and holds the claw portion. The groove frame portion is characterized by having a first bottom surface portion that constitutes the bottom surface portion of the engagement groove and is capable of contacting the first mounting surface, a second bottom surface portion that constitutes the bottom surface portion of the groove and is capable of contacting the second mounting surface, and a pair of engagement surfaces that extend inward in the width direction of the cover from the first bottom surface portion and the second bottom surface portion at an angle perpendicular to the insertion direction of the engagement piece into the engagement groove, and which become the claw engagement surfaces of the engagement projection.

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