External wall service

Abstract

To improve workability for an outer wall accessory disposed on an external 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 external 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 that are disposed along an outside surface of the exterior panel, a center cover part disposed between the cover parts, and an engaging piece disposed on the inside surface of the center cover part. The engaging piece has a pair of legs, which are disposed in parallel on the inside surface of the center cover part so as to be spaced away in a cover width direction and protrude toward the base material so as to come closer to each other toward tips thereof, and a claw part that is formed by being bent outward at the tip and extends in parallel with the legs. 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.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an exterior wall accessory that is installed at the corner of the exterior wall of a building. [Background technology]

[0002] When exterior panels are installed on the exterior walls of buildings such as detached houses and commercial facilities, exterior wall accessories have been proposed to cover gaps that occur at the corners of the exterior walls (for example, Patent Document 1).

[0003] The exterior wall accessory described in Patent Document 1 consists of a base material and a cover material. It is attached to the exterior corner by fixing the base material to the exterior wall body at the corner and engaging the cover material with the base material from the outside of the exterior panel. Specifically, the base material has a V-shaped mounting portion, a pair of left and right locking plates formed by cutting and raising the left and right plate surfaces of the mounting portion, respectively, and locking portions (claw pieces) bent and formed at the tips of the locking plates, thereby fixing the locking plates along the exterior wall body. Meanwhile, the cover material has a V-shaped surface portion (cover portion), a pair of left and right legs bent and formed on the inner surface of the surface portion, and claw portions bent and formed at the tips of the legs. The legs are inserted between the locking plates of the base material, and the claws are fitted into the locking portions of the locking plates, thereby engaging and holding them to the base material. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2008-2248 Summary of the Invention [Problem to be solved by the invention]

[0005] In the exterior wall accessory described in Patent Document 1, the corner at the center of the surface of the cover material is formed to protrude outward at an acute angle. However, considering the design, it is possible to reduce the protrusion dimension by forming the corner as an arc-shaped curved surface or an inclined surface (so-called C-surface). However, reducing the protrusion dimension of the corner as described above requires shortening the legs accordingly, which makes the legs less flexible and increases the engagement resistance when engaging the claws of the cover material with the engagement parts of the base material. Moreover, in the exterior wall accessory described in Patent Document 1, the claws at the tips of the legs of the cover material extend outward to the left and right rather than in the extension direction of the legs, resulting in a greater engagement resistance. Therefore, depending on the installation accuracy and the magnitude of distortion of the base material, the cover material may not be smoothly attached to the base material.

[0006] The present invention has been made in consideration of the above problems, and aims to improve the workability of exterior wall accessories installed at the corners of the exterior walls of buildings. [Means for solving the problem]

[0007] In order to solve the above problems, the exterior wall accessory of the present invention employs the following technical measures.

[0008] The exterior wall accessory of the present invention is an exterior wall accessory provided at an external corner of an exterior wall of a building, and comprises a base material fixed to an exterior wall base, and a cover material that covers a gap between the external corner side end faces of a first exterior panel and a second exterior panel that constitute the external corner, wherein the base material has a first fixing piece that is fixed to a first mounting surface of the exterior wall base that faces the first exterior panel, a second fixing piece that is fixed to a second mounting surface of the exterior wall base that faces the second exterior panel, and an engaging groove that is provided between the first fixing piece and the second fixing piece and engages and holds the cover material, and the cover material has a first cover portion that is arranged along the outer surface of the first exterior panel, and a second fixing piece that is arranged along the outer surface of the second exterior panel. The cover has a cover portion, a central cover portion provided between the first cover portion and the second cover portion, and an engagement piece provided on the inner surface of the central cover portion and inserted into the engagement groove, the engagement piece extending in the cover length direction along the inner surface of the central cover portion and arranged side by side at a distance in the cover width direction, and having a pair of legs protruding toward the base material so as to approach each other as they approach the tip, and a claw portion formed at the tip by folding back outward in the cover width direction and extending parallel to the legs, the engagement groove having an opening into which both of the legs can be inserted, and an engagement protrusion protruding along the inner edge of the opening and engaging and holding the claw portion.

[0009] Preferably, the central cover portion has a first step surface portion arranged facing the protruding corner side end face at a position closer to the protruding corner side end face of the second exterior panel than the first cover portion, and a second step surface portion arranged facing the protruding corner side end face at a position closer to the protruding corner side end face of the first exterior panel than the second cover portion.

[0010] Preferably, furthermore, the step depth of the step formed between the first cover portion and the first step surface portion, and the step depth of the step formed between the second cover portion and the second step surface portion are greater than the pattern depth of the uneven pattern formed on the outer surface of the exterior panel. [Effects of the Invention]

[0011] According to the exterior wall accessory of the present invention, the cover material can be smoothly engaged and held in place with the base material, thereby significantly improving workability. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a bottom cross-sectional view showing the installation state of an exterior wall accessory according to an embodiment of the present invention. [Figure 2] This is a bottom cross-sectional view 2 showing the installation state of the exterior wall accessory of the embodiment. [Figure 3] FIG. 2 is a bottom view of the base material and the cover material. [Figure 4] 1A is a rear view of the cover material, FIG. 1B is a side view of the cover material, and FIG. 1C is a bottom view of the cover material. DETAILED DESCRIPTION OF THE INVENTION

[0013] The following describes the exterior wall accessories according to the present invention with reference to the drawings. Note that the embodiment described below is an example of the present invention, and the configuration of the present invention is not limited to this specific example.

[0014] As shown in Figures 1 and 2, an exterior wall accessory 1 according to an embodiment of the present invention is an exterior component installed at an external corner C of an exterior wall of a building such as a detached house or a commercial facility, and includes a base material 2 and a cover material 3. The base material 2 is fixed to exterior wall bases 4A and 4B. The cover material 3 is fixed to the base material 2 from the outside of exterior panels 5A and 5B.

[0015] In this embodiment, the exterior wall bases 4A, 4B are furring strips fixed to pillars (not shown) of the exterior wall and are arranged at approximately right angles to the two side surfaces of the pillars. More specifically, the exterior wall bases 4A, 4B are arranged at approximately right angles with the side end face of the first exterior wall base 4A arranged on the left side of the projected corner C abutting against the inner surface (the inner surface of the exterior wall) of the second exterior wall base 4B arranged on the right side of the projected corner C.

[0016] In this embodiment, the apex P of the approximately right angle formed by butting together the exterior wall bases 4A and 4B as described above is defined as the center of the projecting corner C, and the protruding direction of the apex P (the vertical direction in FIGS. 1 and 2) is defined as the front-to-rear direction. Also, the direction in FIGS. 1 and 2 that is perpendicular to the reference line X that passes through the apex P and extends in the front-to-rear direction (the horizontal direction in FIGS. 1 and 2) is defined as the left-to-right direction, and the directions that are perpendicular to the front-to-rear direction and the left-to-right direction, respectively, are defined as the up-to-down direction.

[0017] In this embodiment, the exterior panels 5A and 5B are made of aluminum-zinc alloy plated steel sheets. The metal siding is constructed of metal plates such as stainless steel plates, and has foam insulation such as polyisocyanurate foam or polyurethane attached to its back surface, which is then covered with aluminum foil or the like from the back side to form an integrated metal siding. Although not shown, the exterior panels 5A, 5B are formed as approximately flat plates that are long in one direction, and are supported and fixed in multiple rows above and below on the outer surfaces 6A, 6B of the exterior wall bases 4A, 4B with their longitudinal directions aligned with the horizontal. In other words, the exterior panels 5A, 5B are installed horizontally on the exterior wall bases 4A, 4B.

[0018] A predetermined gap 10 is defined between the protruding corner end face 9 of the first exterior panel 5A, which is disposed on the left side of the reference line X, and the protruding corner end face 9 of the second exterior panel 5B, which is disposed on the right side of the reference line X. In other words, the first exterior panel 5A and the second exterior panel 5B are disposed at a substantially right angle with the predetermined gap 10. The corner apexes P of the exterior wall bases 4A, 4B face the gap 10 from the front (the inside of the exterior wall).

[0019] The exterior wall accessory 1 according to the present invention is not limited to applications in exterior walls in which the exterior panels 5A, 5B are made of metal siding, as described above. That is, the exterior wall accessory 1 according to the present invention may also be applied to exterior walls in which the exterior panels 5A, 5B are made of, for example, ceramic siding made of cement or fibrous materials, resin siding made of resin or fibrous materials, or wood siding. The exterior wall accessory 1 according to the present invention is not limited to applications in which the exterior panels 5A, 5B are installed horizontally. That is, the exterior wall accessory 1 according to the present invention may also be applied to exterior walls in which the exterior panels 5A, 5B are installed vertically (vertically) on the exterior wall bases 4A, 4B. The longitudinal dimensions of the exterior panels 5A, 5B are typically approximately 1,000 mm to 5,000 mm. Furthermore, many of the exterior panels 5A, 5B have an uneven pattern 8 such as a wave shape, a mountain shape, or a step formed on the outer surface 7, and the pattern depth H1 of the uneven pattern 8 is formed to be approximately 0.2 mm to 7.0 mm.

[0020] The base material 2 is a plate material formed into an irregular cross section by bending a thin metal plate that is long in one direction, and is usually formed with a longitudinal dimension of approximately 1000 mm to 5000 mm. The base material 2 is supported and fixed to the exterior wall bases 4A, 4B in a vertical orientation with its longitudinal direction aligned with the extension direction (up-down direction) of the apexes P. Note that multiple base materials 2 are installed vertically in accordance with the lengths of the apexes P of the exterior wall bases 4A, 4B. In this case, one base material 2 may be cut in the short direction to match the length of the apex P.

[0021] The base material 2 is preferably formed from a metal plate. The metal plate may be made of iron, aluminum, copper, stainless steel, titanium, aluminum-zinc alloy plated steel, or the like. The base material 2 may be formed not only by bending, but also by roll forming, press forming, extrusion, notching, or the like. Furthermore, the base material 2 may be formed from a synthetic resin material such as vinyl chloride resin or polycarbonate resin.

[0022] As shown in FIGS. 1 to 3, the base material 2 is formed symmetrically about the reference line X. The base material 2 has a first fixing piece 21A, a second fixing piece 21B, and a groove frame portion 22. The first fixing piece 21A and the second fixing piece 21B are overlapped and fixed to the outer surfaces 6A and 6B of the exterior wall base portions 4A and 4B, respectively, so that the base material 2 is disposed along the corner apex P. The first fixing piece 21A and the second fixing piece 21B may be fixed to the exterior wall base portions 4A and 4B by fixing nails N, as described below, or may be fixed to the exterior wall base portions 4A and 4B by tapping screws, tacker needles, or the like. Alternatively, the base material 2 may be fixed to the exterior wall base portions 4A and 4B by other common fixing methods.

[0023] The first fixed piece 21A is bent obliquely from the front edge of the groove frame portion 22 toward the left front. On the other hand, the second fixed piece 21B is bent from the groove frame portion 22 symmetrically with the first fixed piece 21A about the reference line X. The first fixing piece 21A and the second fixing piece 21B are bent obliquely from the front edge of the base member 2 toward the right front. That is, the first fixing piece 21A and the second fixing piece 21B form mounting portions at a substantially right angle in the front half of the base member 2 so that they can be brought into contact with the outer surfaces 6A and 6B of the outer wall base portions 4A and 4B, respectively, facing each other.

[0024] 1 and 2, the first fixing piece 21A is disposed facing the outer surface (first mounting surface) 6A of the first exterior wall base 4A, and is fixed to the first exterior wall base 4A with fixing nails N. The first exterior panel 5A is disposed facing the first fixing piece 21A from its outer surface 23 side. Therefore, the first fixing piece 21A is fixed between the first exterior wall base 4A and the first exterior panel 5A.

[0025] The second fixing piece 21B is disposed facing the outer surface (second mounting surface) 6B of the second exterior wall base 4B, and is fixed to the second exterior wall base 4B with a fixing nail N. The second exterior panel 5B is disposed facing the outer surface 23 of the second fixing piece 21B. Therefore, the second fixing piece 21B is fixed between the second exterior wall base 4B and the second exterior panel 5B.

[0026] As shown in FIGS. 1 to 3, a folded portion 24 is formed on the leading edge (front edge) of the first fixed piece 21A and the leading edge (front edge) of the second fixed piece 21B. The folded portion 24 on the first fixed piece 21A side is bent inwardly from the leading edge of the first fixed piece 21A toward the right rear toward the outer surface 23, while the folded portion 24 on the second fixed piece 21B side is bent inwardly from the leading edge of the second fixed piece 21B toward the left rear toward the outer surface 23. In addition, a rib 25 is protruded from the outer surface 23 of each of the first fixed piece 21A and the second fixed piece 21B. The rib 25 is a protrusion bent into a substantially V-shaped cross section and is formed across the short end surfaces of the first fixed piece 21A and the second fixed piece 21B. Furthermore, a plurality of ribs 25 (two of each in this example) are arranged side by side at predetermined intervals in the short direction of the first fixing piece 21A and the second fixing piece 21B. These ribs 25 ensure a predetermined bending strength for the first fixing piece 21A and the second fixing piece 21B, and can also prevent rainwater from penetrating inside the exterior panels 5A, 5B. The fixing nails N are driven into the first exterior wall base 4A at the flat portions between the ribs 25 of the first fixing piece 21A and the second fixing piece 21B.

[0027] In this way, the base material 2 is held at an appropriate position and angle (a posture in which the center of the groove frame portion 22 is aligned with the reference line X) relative to the outer wall base portions 4A, 4B by abutting the first fixing piece 21A and the second fixing piece 21B facing the outer surfaces 6A, 6B of the outer wall base portions 4A, 4B, respectively.

[0028] As shown in FIGS. 1 to 3 , the groove frame portion 22 is bent in a generally M-shape. Specifically, the groove frame portion 22 has a generally M-shaped cross section that is symmetrical about the reference line X. The groove frame portion 22 includes a left outer frame portion 22A that forms the left surface, a right outer frame portion 22B that forms the right surface, and an inner frame portion 22C that forms the central recessed surface. The left outer frame portion 22A extends rearward from the right rear edge of the first fixing piece 21A on the left side of the reference line X. The right outer frame portion 22B extends rearward from the left rear edge of the second fixing piece 21B on the right side of the reference line X. The inner frame portion 22C is bent forward in a generally U-shape from the mutual rear edges of the left outer frame portion 22A and the right outer frame portion 22B. The recessed portion on the inner side of the inner frame portion 22C forms an engagement groove 26 that can engage and hold the cover material 3. In other words, the inner frame portion 22C forms the outer contour of the engagement groove 26.

[0029] The inner frame portion 22C is open to the rear. That is, the engagement groove 26 has an opening 27 at the rear. The bottom surface portion (groove bottom portion) 28 of the inner frame portion 22C is formed in a flat shape that is perpendicular to the reference line X. In addition, the groove bottom portion 28 is provided behind the intersection of the lines that extend the first fixing piece 21A and the second fixing piece 21B toward the reference line X. This allows the base material 2 to be attached to the outer wall When fixed to the bases 4A, 4B, the front surface of the groove bottom 28 does not contact the apex P of the outer wall bases 4A, 4B. However, as long as the base material 2 can be properly fixed to the outer wall bases 4A, 4B without any rattle, the groove bottom 28 may be located in a position where it contacts the apex P of the outer wall bases 4A, 4B.

[0030] An engagement protrusion 30 protrudes from each of the left and right groove side portions (inner edges of the opening 27) 29 of the inner frame portion 22C. The engagement protrusion 30 provided on the left groove side portion 29 is formed to protrude obliquely from the rear edge of the left outer frame portion 22A toward the right front toward the reference line X. The engagement protrusion 30 provided on the right groove side portion 29 is formed to protrude obliquely from the rear edge of the right outer frame portion 22B toward the left front toward the reference line X. In addition, the engagement protrusion 30 is provided with a claw engagement surface 30F facing the groove bottom portion 28.

[0031] The claw engagement surface 30F is formed as an inclined surface that gently slopes from the end (inner end) of the engagement protrusion 30 on the reference line X side toward the rear of the outer frame portions 22A, 22B. Note that the claw engagement surface 30F may be formed as a surface that is perpendicular to the reference line X in the left-right direction (cover width direction) from the end of the engagement protrusion 30 on the reference line X side.

[0032] As described above, the engagement protrusions 30 are formed to protrude from the left and right groove side portions 29 of the inner frame portion 22C. The left and right groove side portions 29 of the inner frame portion 22C are connected to the outer frame portions 22A and 22B at their rear edges, and the outer frame portions 22A and 22B are connected to the first fixed piece 21A and the second fixed piece 21B at their front edges. In other words, the inner frame portion 22C, the engagement protrusions 30, the outer frame portions 22A and 22B, the first fixed piece 21A, and the second fixed piece 21B are integrally formed from a single plate material.

[0033] The cover material 3 is a plate material formed into an irregular cross section by bending a thin metal plate that is long in one direction, and is engaged and fixed to the base material 2 in a vertical direction with its longitudinal direction aligned with the extension direction of the corner apex P of the exterior wall bases 4A, 4B. Note that multiple cover materials 3 are installed vertically aligned according to the vertical length of the gap 10 between the protruding corner end faces 9 of the exterior panels 5A, 5B. In this case, one cover material 3 may be cut in the short direction to match the vertical length of the gap 10.

[0034] The cover material 3 is preferably formed from a metal plate. The metal plate may be one of iron, aluminum, copper, stainless steel, titanium, or aluminum-zinc alloy-plated steel plate. More preferably, the cover material 3 is an aluminum-zinc alloy-plated steel plate or an aluminum-zinc alloy-plated steel plate with magnesium added for rust prevention. Taking the exterior appearance of the exterior wall into consideration, the cover material 3 is preferably made of the same material as the metal plate on the surface of the exterior panels 5A, 5B. The cover material 3 may be formed by not only folding but also roll forming, press forming, extrusion molding, notching, or other methods. Furthermore, the cover material 3 may be formed from a synthetic resin material such as vinyl chloride resin or polycarbonate resin.

[0035] 1 to 4, the cover material 3 is formed in a shape symmetrical on the left and right sides with respect to the reference line X. The cover material 3 has a first cover portion 31A, a second cover portion 31B, a central cover portion 31C, and an engaging piece 32, and is disposed so as to cover the gap 10 from the rear (outside the outer wall) by engaging the engaging piece 32 with the groove frame portion 22 of the base material 2.

[0036] As shown in Figure 4, the upper end of the shorter side of the covering material 3 is provided with an insertion piece 33, and the lower end is provided with a notch 34. When installing multiple covering materials 3 in a vertical line, the insertion piece 33 of the covering material 3 arranged on the lower side is inserted into the notch 34 of the covering material 3 arranged on the upper side. In this way, the upper and lower covering materials 3 are installed in a connected state.

[0037] As shown in FIGS. 1 to 4, the inner surfaces (front surfaces) of the first cover portion 31A and the second cover portion 31B are Watertight material 36 is attached to each of the outer surfaces 7 of exterior panels 5A, 5B. Watertight material 36 is a strip made of a highly elastic and waterproof material such as ethylene propylene rubber foam, urethane foam resin, or silicone resin, and when cover material 3 is attached to base material 2, watertight material 36 is in close contact with outer surfaces 7 of exterior panels 5A, 5B. This prevents rainwater from seeping into the interior of the exterior wall through gaps 10.

[0038] The first cover portion 31A is formed by bending obliquely from the left rear edge of the central cover portion 31C toward the left front. Meanwhile, the second cover portion 31B is formed by bending obliquely from the right rear edge of the central cover portion 31C toward the right front, symmetrically with the first cover portion 31A about the reference line X. That is, the first cover portion 31A and the second cover portion 31B are arranged at a substantially right angle to each other so that they can abut against the outer surfaces 7 of the exterior panels 5A and 5B, respectively.

[0039] Furthermore, the first cover portion 31A and the second cover portion 31B are arranged to face the outer surfaces 7 of the first exterior panel 5A and the second exterior panel 5B, respectively, in a state in which 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 materials 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.

[0040] Furthermore, the first cover portion 31A of this embodiment has an outer surface portion 41 extending from the left rear edge portion of the central cover portion 31C toward the left front, and an inner surface portion 42 folded back at the left front edge portion of the outer surface portion 41 and arranged to face the inside (front side) of the outer surface portion 41. The second cover portion 31B has an outer surface portion 41 extending from the right rear edge portion of the central cover portion 31C toward the right front, and an inner surface portion 42 folded back at the right front edge portion of the outer surface portion 41 and arranged to face 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.

[0041] The central cover portion 31C is bent to have a V-shaped cross section that is concave forward. Specifically, the central cover portion 31C has a V-shaped cross section that is symmetrical about the reference line X, and has a first stepped surface portion 43A that forms the right surface portion and a second stepped surface portion 43B that forms the left surface portion.

[0042] The first stepped surface portion 43A is formed by bending obliquely from the left rear edge portion of the second cover portion 31B toward the left front. In this embodiment, the first stepped surface portion 43A is formed by bending from the left rear edge portion of the second cover portion 31B toward the left front toward the reference line X at a position to the right of the reference line X. In this manner, the first stepped surface portion 43A is disposed with a step at a right rear position of the first cover portion 31A (the rear center of the cover material 3). Furthermore, when the cover material 3 is engaged and fixed to the base material 2, the first stepped surface portion 43A is disposed to face the protruding corner side end surface 9 of the second exterior panel 5B.

[0043] The inner surface 44 of the first step surface portion 43A (inner surface of the central cover portion 31C) is provided with a connecting piece 45 that extends from the left rear edge portion of the inner surface portion 42 of the second cover portion 31B toward the left front and is arranged along the inside (front side) of the first step surface portion 43A.

[0044] The second stepped surface portion 43B is configured symmetrically to the first stepped surface portion 43A. That is, the second stepped surface portion 43B is formed by bending from the right rear edge portion of the first cover portion 31A toward the right front side toward the reference line X. In this way, the first stepped surface portion 43A and the second stepped surface portion 43B form a recessed surface portion (central cover portion 31C) that is approximately perpendicular to the rear center (central corner) of the cover material 3.

[0045] The dimension in the short side direction of the second stepped surface portion 43B, i.e., the step depth H2 of the step formed by the first cover portion 31A and the first stepped surface portion 43A, is set to be larger than the pattern depth H1 of the uneven pattern 8 formed on the outer surface 7 of the first exterior panel 5A. Similarly, the dimension in the short side direction of the first stepped surface portion 43A, i.e., the step depth H2 of the step formed by the second cover portion 31B and the second stepped surface portion 43B, is formed to be larger than the pattern depth H1 of the uneven pattern 8 of the second exterior panel 5B.

[0046] As described above, the first cover portion 31A and the second cover portion 31B are connected to the left and right rear edge portions of the central cover portion 31C, respectively, and these first cover portion 31A, second cover portion 31B, and central cover portion 31C form a cover portion with an M-shaped cross section. In other words, the cover material 3 has, on the left and right positions across the reference line X, a bent portion L1 that is convex backward and a bent portion L2 that is concave forward on the reference line X.

[0047] When the cover material 3 is engaged and fixed to the base material 2, the left front edge of the first cover portion 31A and the right front edge of the second cover portion 31B are pressed against the outer surfaces 7 of the exterior panels 5A and 5B via the watertight material 36, and this reaction force is applied to the left and right front edges of the cover portions 31A and 31B. That is, stress is applied to the left and right side edges of the cover material 3 in a direction that causes them to bend rearward and outward. However, in the case of the cover material 3 of this embodiment, the three bent portions L1 and L2 act as bending starting points and absorb the stress, making it difficult for the first cover portion 31A, the second cover portion 31B, and the central cover portion 31C to bend.

[0048] The engagement pieces 32 are a pair of generally J-shaped plate pieces arranged opposite each other on the left and right, and are formed by bending at the front edge portions of connecting pieces 45 arranged on the inner surfaces 44 of the first step surface portion 43A and the second step surface portion 43B. That is, the engagement pieces 32 are arranged between the left and right bending portions L1 and the central bending portion L2 on the inner surface 44 of the central cover portion 31C, and are arranged side by side with a space between them in the left and right direction across the reference line X.

[0049] In the conventional exterior wall accessory described above, in which a single bent portion is provided in the center of the cover material, when stress is applied to the left and right side edges of the cover material from the exterior panel, the bent portion acts as the bending point, causing the entire cover material to bend and expand laterally. This also causes the legs on the inner surface of the cover material to tilt and expand laterally. This may prevent the legs from smoothly inserting between the locking plates of the base material. In contrast, in the exterior wall accessory 1 of this embodiment, as described above, bent portions L1 and L2 are provided in three locations in the center of the cover material 3, and the engaging piece 32 is positioned between the left and right bent portions L1 on the inner surface 44 of the central cover portion 31C. Therefore, even if stress is applied to the left and right side edges of the cover material 3, the engaging piece 32 is less likely to expand laterally. This allows the engaging piece 32 to be smoothly inserted into the groove frame portion 22 of the base material 2.

[0050] The engagement piece 32 has a pair of legs 51 provided on the left and right sides of the reference line X on the inner surface 44 of the central cover portion 31C, and claw portions 52 formed by folding back at the tip portions of the legs 51. The legs 51 extend in the longitudinal direction (cover length direction) along the inner surface 44 of the central cover portion 31C. The legs 51 also extend obliquely from the front edge of the connecting piece 45 forward toward the reference line X. In this embodiment, the legs 51 are bent inward and forward at an angle of 9 degrees from the extension direction of the reference line X. In this manner, the left and right legs 51 are respectively formed to protrude forward (toward the base material 2) so as to approach each other as they approach their tip portions (front ends).

[0051] The claws 52 are formed by folding back outward in the left-right direction (cover width direction) at the tip (front end) of the leg 51. In this embodiment, the claws 52 extend outward from the tip of the leg 51 at an angle of 9 degrees from the extension direction of the reference line X, that is, parallel to the leg 51. The claws 52 are also bent outward on the left and right sides of the leg 51 with a predetermined gap between them. It has been done.

[0052] As described above, the left and right claw portions 52 are connected to the connecting piece 45 via the leg portions 51. The connecting piece 45 is connected to the outer surface portion 41 via the inner surface portion 42, and the outer surface portion 41 is connected to the central cover portion 31C. That is, the engaging piece 32 is connected to and supported by the front edge of the outer surface portion 41 via the connecting piece 45 and the inner surface portion 42. Therefore, the engaging piece 32 has a higher degree of freedom of movement than an engaging piece 32 directly connected to the inner surface of the cover portion. The engaging piece 32, connecting piece 45, inner surface portion 42, outer surface portion 41, and central cover portion 31C are integrally formed from a single plate material.

[0053] The distance between the rear ends of the left and right claws 52 (claw width dimension) is slightly larger than the distance between the tips of the engagement protrusions 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). Therefore, when the engagement pieces 32 are inserted into the openings 27 of the groove frame portion 22 to engage the cover material 3 with the base material 2, the left and right claws 52 each abut against the engagement protrusions 30 inside the openings 27. Furthermore, as the engagement pieces 32 are further pushed deeper (forward) into the engagement grooves 26 than the openings 27, the left and right claws 52 are tilted inward (toward the reference line X) so as to approach each other slightly. Furthermore, when their tips pass the tips of the engagement protrusions 30, they are tilted outward (away from the reference line X) to their original positions so as to move away from each other (returning to their original positions). As a result, the tips of the claws 52 engage with the claw engagement surfaces 30F of the engagement protrusions 30. At this time, the elastic force of the watertight material 36 is applied to the cover material 3 in a direction pushing it backward, so that the tip of the claw portion 52 is more firmly fitted into the claw engagement surface 30F of the engagement projection 30. Moreover, at this time, the claw portion 52 extends parallel to the leg portion 51 and is positioned nearly perpendicular to the claw engagement surface 30F. This allows the cover material 3 to be stably engaged and held in the base material 2.

[0054] As described above, the exterior wall accessory 1 of the above embodiment is an exterior wall accessory 1 provided at a projected corner C of an exterior wall of a building, and comprises a base material 2 fixed to the exterior wall bases 4A, 4B, and a cover material 3 that covers a gap 10 between the projected corner side end faces 9 of the first exterior panel 5A and the second exterior panel 5B that form the projected corner C, and the base material 2 has a first fixing piece 21A fixed to the first mounting surface 6A of the exterior wall base 4A that faces the first exterior panel 5A, a second fixing piece 21B fixed to the second mounting surface 6B of the exterior wall base 4B that faces the second exterior panel 5B, and an engagement groove 26 that is provided between the first fixing piece 21A and the second fixing piece 21B and engages and holds the cover material 3, and the cover material 3 has a first cover portion 31A arranged along the outer surface 7 of the first exterior panel 5A, and a second fixing piece 21B fixed to the outer surface 7 of the second exterior panel 5B. the first cover part 31A and the second cover part 31B, a central cover part 31C provided between the first cover part 31A and the second cover part 31B, and an engagement piece 32 provided on the inner surface 44 of the central cover part 31C and inserted into and engaged with the engagement groove 26, the engagement piece 32 extending in the cover length direction along the inner surface 44 of the central cover part 31C and arranged side by side with a space between them in the cover width direction, and having a pair of legs 51 protruding toward the base material 2 so as to approach each other as they approach their tip ends, and a claw part 52 formed at the tip end by folding back outward in the cover width direction and extending parallel to the legs 51, the engagement groove 26 having an opening 27 into which both legs 51 can be inserted, and an engagement protrusion 30 protruding along the inner edge 29 of the opening 27 and engaging and holding the claw part 52.

[0055] This reduces the engagement resistance when engaging the engagement pieces 32 of the cover material 3 with the engagement grooves 26 of the base material 2, so even if the projection dimension of the central cover portion 31C toward the outside of the corner (in the direction of the reference line X) is formed small in consideration of design, it becomes possible to smoothly engage and hold the cover material 3 with the base material 2. Therefore, workability is significantly improved.

[0056] In the above embodiment, the central cover portion 31C is a first step portion disposed facing the corner-side end surface 9 of the second exterior panel 5B at a position closer to the corner-side end surface 9 of the second exterior panel 5B than the first cover portion 31A. The panel 43 has a surface portion 43A and a second stepped surface portion 43B disposed facing the corner side end face 9 at a position closer to the corner side end face 9 of the first exterior panel 5A than the second cover portion 31B.

[0057] In this type of exterior wall accessory, if the cover material is difficult to fit into the base material, the worker places a batten on the outer surface of the cover material and hits it from the outside with a hammer or the like to fit the cover material into the base material. However, if the center of the outer surface of the cover material is formed to protrude in a V-shape outward from the corner, as in the above-mentioned conventional exterior wall accessory, there is a risk of rattle between the cover material and the batten, making it difficult to accurately press the cover material toward the center of the base material. There is also a risk of deformation of the corner at the center of the outer surface. Moreover, when fitting the cover material into the base material by pressing it with a finger, the apex of the corner must be pressed toward the center of the base material, which makes the pressing direction prone to swaying left and right, and there is a risk of the cover material not being smoothly engaged with the base material.

[0058] However, in the exterior wall accessory 1 of the above embodiment, a step is formed in the center of the covering material 3 (central covering portion 31C) by the stepped surface portions 43A, 43B. Therefore, even when engaging the covering material 3 with the base material 2 using a batten, rattle is unlikely to occur between the covering material 3 and the batten. Therefore, the covering material 3 can be accurately pushed toward the center of the base material 2. At the same time, deformation of the center of the covering material 3 can also be prevented. Moreover, when the covering material 3 is fitted into the base material 2 by pressing it with a finger, the two stepped surface portions 43A, 43B arranged opposite the corner-side end faces 9 of the exterior panels 5A, 5B can be pushed toward the center of the base material 2. Therefore, the pushing direction is unlikely to deviate left and right, and the covering material 3 can be smoothly engaged with the base material 2. This further improves workability.

[0059] Furthermore, with this, the step formed between the first cover portion 31A and the first stepped surface portion 43A and the step formed between the second cover portion 31B and the second stepped surface portion 43B can achieve a sense of unity in appearance with the uneven pattern 8 formed on the outer surface 7 of the exterior panels 5A, 5B. Also, the design of the exterior wall accessory 1 as a whole is improved.

[0060] In addition, in the above embodiment, the step depth H2 of the step formed between the first cover portion 31A and the first step surface portion 43A, and the step depth H2 of the step formed between the second cover portion 31B and the second step surface portion 43B are set to be larger than the pattern depth H1 of the uneven pattern 8 formed on the outer surface 7 of the exterior panels 5A, 5B.

[0061] In this case, the step depth H2 of the step formed by the cover portions 31A, 31B and the stepped surface portions 43A, 43B is large, so when pressing the cover material 3 with a finger to fit it into the base material 2, the finger easily fits into the step, further improving workability. In addition, the step depth H2 of the step emphasizes the presence of the uneven pattern 8 formed on the outer surface 7 of the exterior panels 5A, 5B, further improving design. Moreover, in this case, the cover portions 31A, 31B, which are approximately flush with the outer surface 7 of the exterior panels 5A, 5B, are smaller by the amount of the stepped surface portions 43A, 43B, making the cover material 3 less noticeable. Therefore, design is further improved. [Explanation of symbols]

[0062] 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 second outer wall base (second mounting surface) 7. Outer surface of exterior panel 9 Extruded corner end face 10 gap 21A 1st fixed piece 21B 2nd fixed piece 26 Engagement groove 27 Opening 29 Inner edge of opening 30 Engagement protrusion 31A First cover part 31B Second cover part 31C Center cover 32 Engagement piece 44 Inner surface of central cover 51 Legs 52 Claw C. Outside corner

Claims

1. An exterior wall accessory provided at a corner of an exterior wall of a building, comprising: a base material fixed to a base of the exterior wall; and a cover material covering a gap between the end faces of the first exterior panel and the second exterior panel that constitute the corner; the base material has 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 engaging groove provided between the first fixing piece and the second fixing piece, which engages and holds the cover material; the cover material has 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, a central cover portion provided between the first cover portion and the second cover portion, and an engagement piece provided on the inner surface of the central cover portion and inserted into and engaged with the engagement groove, The engaging piece has a pair of legs extending in the cover length direction along the inner surface of the central cover portion, arranged in parallel with and spaced apart in the cover width direction, and projecting toward the base material so as to approach each other toward the tip end, and a claw portion formed at the tip end by folding back outward in the cover width direction and extending parallel to the legs, The engagement groove is an exterior wall accessory having an opening into which both of the legs can be inserted, and an engagement protrusion that protrudes along the inner edge of the opening and engages and holds the claw portion.

2. 2. The exterior wall accessory described in claim 1, wherein the central cover portion has a first step surface portion arranged facing the protruding corner side end face at a position closer to the protruding corner side end face of the second exterior panel than the first cover portion, and a second step surface portion arranged facing the protruding corner side end face at a position closer to the protruding corner side end face of the first exterior panel than the second cover portion.

3. The exterior wall accessory described in claim 2, characterized in that the step depth of the step formed between the first cover portion and the first step surface portion and the step depth of the step formed between the second cover portion and the second step surface portion are greater than the pattern depth of the uneven pattern formed on the outer surface of the exterior panel.

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