Starter

Abstract

To solve the problem in which, in a snow-covered district, snow enters between a starter and an exterior material, and also, by being connected to the snow accumulated outside, a large load is applied and there is a risk of the starter deforming, and during a season when snow does not fall, if the starter is designed focusing on a drainage mechanism for rainwater or the like, a drain hole can be seen by passers-by, thereby impairing the appearance of a building.SOLUTION: At a starter 1, a fixing surface 2 is provided substantially vertically with respect to the ground, and a placement surface 3, an indoor side inclined surface 4, a bottom part 5, an outdoor side inclined surface 6, a decorative surface 7, and a drain hole are provided on the outdoor side of the fixing surface 2, and a hook part 8 and a support surface 9 are provided on the indoor side of the fixing surface 2. Furthermore, the starter for metal exterior material has sufficient strength with respect to accumulated snow, and a drainage mechanism for rainwater and the like cannot be seen from the outdoor side.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a starter used when vertically installing metal exterior materials in snowy regions. [Background technology]

[0002] When installing metal exterior materials, a component called a starter that can cover the edges of the exterior material is often used. Starters are primarily used in the foundations of buildings and in the vertical joints between the first and second floors, but in snowy areas, special starters that take into account the effects of snow accumulation are sometimes used. For example, they are used to fasten the edges of exterior materials, as in Patent Documents 1 and 2. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-023571 [Patent Document 2] Japanese Patent Application Publication No. 2017-172163 Summary of the Invention [Problem to be solved by the invention]

[0004] Patent Document 1 describes a starter with a ventilation mechanism that can efficiently drain rainwater and other water and prevent condensation, particularly when exterior materials are adjacent vertically. An example of an adjacent exterior material is a situation where a joint occurs between the first and second floors. In this situation, a starter of the same color as the exterior materials is often used so that it is not too noticeable. However, because starters used at joints are installed in positions where passersby will look up, if the starter is designed to prioritize drainage of rainwater and other water, the drainage holes will be visible, which can detract from the aesthetic appeal of the building.

[0005] Patent Document 2 describes a trim that is less likely to deform the front edge due to snow, and describes a starter that minimizes the gap between the trim and the exterior material to prevent snow from entering the trim. Because snow expands when it freezes, if it gets into the gap in the trim and freezes, it can deform the trim. However, designing it to prevent snow from entering could limit the thickness of the exterior material that can be used. Furthermore, if a support part is provided on the front side as in Patent Document 2, there is a risk that an adequate drainage path may not be secured if snow, rainwater, etc. gets in between the cutting edge and the exterior material. [Means for solving the problem]

[0006] Therefore, the present invention provides a starter for metal exterior materials, which is characterized by having a fixing surface that is approximately perpendicular to the ground, a mounting surface that extends toward the outdoors halfway along the fixing surface, and an indoor inclined surface, a bottom, and an outdoor inclined surface that are approximately V-shaped in cross section from the ground-side end of the fixing surface toward the outdoors, and a decorative surface on the outdoor side of the outdoor inclined surface, and which is characterized by having a hook portion and a support surface on the indoor side of the fixing surface.

[0007] In addition to the above features, as a further aspect of the present invention, the bottom of the starter is provided with multiple drainage holes, allowing snow, rainwater, etc. that seeps into the gap between the exterior material and the starter to drain smoothly toward the bottom.

[0008] The present invention also provides a starter in which the hook portion is arranged to come into contact with the protrusion portion of the dripper when the metal exterior material is installed. [Effects of the Invention]

[0009] According to the present invention, it is possible to construct a drainage mechanism that prevents deformation due to snow in snowy areas and does not impair the aesthetic appearance of the building. [Brief explanation of the drawings]

[0010] [Figure 1]1 is a cross-sectional view of a starter according to the present invention. [Figure 2] 1 is a perspective view of a starter according to the present invention; [Figure 3] 1A and 1B are a cross-sectional view and a perspective view showing an embodiment of a metal exterior material using a starter according to the present invention. [Figure 4] FIG. 10 is a construction diagram of an embodiment of a base using a starter according to the present invention. [Figure 5] 1 is a perspective view of an embodiment of a drainer using a starter according to the present invention, and a partially enlarged view of an installation example. [Figure 6] 1A and 1B are a cross-sectional view and a perspective view showing a conventional example of a starter according to the present invention. DETAILED DESCRIPTION OF THE INVENTION [Example]

[0011] Hereinafter, an embodiment of the starter 1 according to the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements are given the same reference numerals, and duplicate explanations will be omitted. FIG. 1 is a cross-sectional view of the starter 1 according to the present invention. FIG. 2 is a perspective view of the starter 1 according to the present invention. FIG. 3(a) is a cross-sectional view of an embodiment of a metal exterior material using the starter 1 according to the present invention, and FIG. 3(b) is a perspective view of an embodiment of a metal exterior material using the starter 1 according to the present invention. FIG. 4 is an installation diagram of an embodiment of a base part using the starter 1 according to the present invention. FIG. 5(a) is a perspective view of an embodiment of a drainer 48 using the starter 1 according to the present invention, and FIG. 5(b) is a partially enlarged view of an installation example using the starter 1 according to the present invention and the drainer 48. FIG. 6 is a cross-sectional view showing a conventional example of the starter 1 according to the present invention, and FIG. 6(b) is a perspective view of a conventional example of the starter 1 according to the present invention.

[0012] FIG. 1 is a cross-sectional view of a starter 1 according to the present invention. The starter 1 includes a mounting surface 3 extending toward the outdoor side midway along the fixed surface 2. The indoor-side inclined surface 4, bottom 5, and outdoor-side inclined surface 6 are arranged in a roughly V-shaped cross section from the ground-side end of the fixed surface 2 toward the outdoor side. Furthermore, a decorative surface 7 is provided on the outdoor side. The angles formed by the indoor-side inclined surface 4, bottom 5, and outdoor-side inclined surface 6 are preferably obtuse. The indoor side of the fixed surface 2 also includes a hook 8 and a support surface 9. The roof-side end of the fixed surface 2 includes a thickened fixed surface end 12, and the end of the decorative surface 7 includes a similarly thickened decorative surface end 13. The fixed surface 2 also includes a fixing portion 10 that serves as a guide for fastening with a fastener, and the bottom 5 includes multiple drainage holes 11 (see FIG. 2). Because the mounting surface 3 is the portion on which the metal exterior material 21 rests, it is preferably located on the ground side of the fixed surface, at least closer to the ground than the decorative surface end 13.

[0013] The starter 1 can be produced by extrusion molding or mold molding. It is effective and preferable to mold the starter 1 to a thickness of about 1.0 to 2.0 mm, with the ends (fixing surface end 12, decorative surface end 13) being about 1.5 to 2.5 mm, in order to ensure durability. Since the starter 1 is particularly suitable for use in snowy regions, the thickness is not limited to the above as long as it can achieve the strength required to withstand the load caused by snow accumulation and expansion due to freezing.

[0014] The edge of the decorative surface 7 facing the ground is designed to extend further toward the ground than the bottom 5, thereby serving as a drain. Furthermore, even when installed at a vertical joint between the first and second floors of a building, the decorative surface 7 makes the drain holes 11 less visible, reducing the risk of damaging the aesthetic appeal of the entire building.

[0015] Figure 2 is a perspective view of the starter 1, with drainage holes 11 arranged in a bale shape at intervals of approximately 50 to 100 mm. The drainage holes are not limited to a bale shape, and can also be round or square, as long as they are shaped to allow sufficient drainage of meltwater, rainwater, etc. The length of the starter 1 is not important, but a length of approximately 4000 mm is preferable for ease of handling. The starter 1 is formed from iron, aluminum, stainless steel, titanium, aluminum-zinc alloy-plated steel sheet, etc.

[0016] 3(a) shows an example of a metal exterior material 21, which has a three-layer structure consisting of a surface material 22, a backing material 23, and a core material 24. The surface material 22 may be formed into various shapes by roll forming, press forming, or other methods using materials such as iron, aluminum, copper, stainless steel, titanium, aluminum-zinc alloy-plated steel, enameled steel, clad steel, laminated steel (e.g., PVC steel), sandwich steel (e.g., vibration-damping steel), or synthetic resin plates, such as vinyl chloride resin or polycarbonate resin (including colored plates made of these resins in various colors). The backing material 23 may be a laminate of one or more of aluminum-metallized paper, kraft paper, asphalt felt, metal foil (e.g., Al, Fe, Pb, Cu), synthetic sheet, rubber sheet, cloth sheet, gypsum paper, aluminum hydroxide paper, or glass fiber nonwoven fabric, or a waterproof or flame-retardant sheet, or may be made of the above-mentioned metal steel plate.

[0017] The core material 24 is made of a synthetic resin foam such as polyurethane foam, polyisocyanurate foam, phenol foam, vinyl chloride foam, polyethylene foam, polystyrene foam, or urea foam. For example, a concentrate of resol-type phenol, a hardener, and a foaming agent are mixed together, and the mixture is ejected onto the back surface of the surface material 22, heated to cause a reaction, foaming, and hardening, thereby integrating the surface material 22 and the back surface material 23.

[0018] Furthermore, the metal exterior material 21 has an interlocking structure consisting of a fixing surface 25, an interlocking groove 26, an interlocking piece 27, a hypotenuse 28, a step 29, a decorative portion 30, a raised portion 31, an interlocking groove 32, and an interlocking piece 33. When connecting metal exterior materials 21 as shown in FIG. 3(b), the fixing surface 25 of the metal exterior material 21 to be installed first is fixed to a frame such as a furring strip with a fastener, and then the interlocking groove 26 is fitted with the interlocking piece 33, and the interlocking piece 27 is fitted with the interlocking groove 32. Between the connected metal exterior materials 21, a gasket 34 may be provided in the interlocking groove 32 to improve watertightness. The gasket may be, for example, a commonly available material such as polyvinyl chloride, chloroprene, chlorosulfonated polyethylene, ethylene propylene, asphalt-containing polyurethane, EPM, or EPDM.

[0019] The metal exterior material 21 of the present disclosure has a design generally known as a standing flat design, and the step 29 is often about 10 millimeters, resulting in a design with significant irregularities. Furthermore, the metal exterior material 21 has few irregularities, and the starter 1 of the present invention can also be used for thick exterior materials with an overall thickness (thickness in the indoor-outdoor direction) of about 20 to 30 millimeters. Note that the exterior material to be used is not limited to metal-based exterior materials, and may include ceramic-based exterior materials, wood-based exterior materials, or the like.

[0020] FIG. 4 shows a construction diagram for the foundation of a building. A flashing 43, a breathable waterproof sheet 44, and furring strips 45 are installed on a foundation 41 and a base 42. A flashing 46 and a starter 1 are then installed using fasteners 47. FIG. 5(a) shows a perspective view of the flashing 46, with a protrusion 48 and a slope 49. FIG. 5(b) shows an enlarged view of the flashing 46 and the starter 1 from the construction diagram in FIG. 4. When installing the starter 1 on the flashing 46, it is preferable to maintain a distance of approximately 10 mm between the ground-side edge of the decorative surface 7 and the slope 49 of the flashing 46. Furthermore, because the hook 8 of the starter 1 allows the starter 1 to be hooked onto the protrusion 48 of the flashing 46, a distance of approximately 10 mm can be systematically maintained between the ground-side edge of the decorative surface 7 and the slope 49 without the need for marking.

[0021] Deformation of starters used in snowy regions is not only caused by snow getting inside the starter, but can also be due to snow accumulation outside the starter. For example, in areas with heavy snowfall, when snow accumulates from the ground up to the location where the starter is used, the snow that has gotten inside the starter may join with snow from outside, and the weight of the snow accumulated on the starter may be added, causing deformation. This invention describes a starter 1 made by aluminum extrusion molding, with a plate thickness of 1.5 to 2.0 mm, and is further formed to have a greater thickness from the decorative surface 7 to the outdoor inclined surface 6 (with a large inner radius). This design ensures sufficient strength to prevent deformation of the starter 1 even when used in snowy regions.

[0022] 6(a) shows a conventional embodiment of the starter 1 according to the present invention, in which the end of the fixing surface 52 of the starter 51 is bent outdoors to form a bottom surface 53, and the bottom surface 53 is bent toward the roof to form a decorative surface 54. The fixing surface 52 is provided with a fixing portion 55 that serves as a guide when using a fixing tool, and a mounting surface 56 is provided inside the fixing surface 52 and decorative surface 54, which are roughly U-shaped in cross section.

[0023] FIG. 6(b) is a perspective view of the starter 51, with the decorative surface 54 shown through the viewfinder to reveal the drainage hole 57. Like the starter 1, the starter 51 is constructed from materials suitable for snowy regions. The drainage hole 57 is located on the bottom surface 53, creating a drainage mechanism that is horizontal to the ground. Because the bottom surface 53 is located horizontally, drainage is poor, and sand, soil, and other contaminants tend to accumulate on the bottom surface 53. Furthermore, because sufficient space was not secured between the bottom end of the metal exterior material 21 and the bottom surface 53 during construction, rainwater pooled and formed a film, potentially stagnating and promoting corrosion of the bottom end of the metal exterior material 21. Furthermore, when used on a metal exterior material with a highly irregular design, such as the metal exterior material 21, the drainage hole 57 would be visible after construction, especially at the vertical joints, potentially detracting from the aesthetic appeal of the building.

[0024] Next, we will explain the drainage mechanism of the starter 1. The starter 1 is composed of a first area consisting of the fixed surface 2, the mounting surface 3, and the decorative surface 7; a second area consisting of the fixed surface 2, the mounting surface 3, the indoor inclined surface 4, the bottom 5, the outdoor inclined surface 6, the decorative surface 7, and the drainage holes 11; and a third area consisting of the indoor inclined surface 4, the bottom 5, the outdoor inclined surface 6, the decorative surface 7, the drainage holes 11, and the drain 46.

[0025] The first area is a space that accommodates the metal exterior material 21 and can cover the edge of the metal exterior material 21. The second area is a drainage path for rainwater and the like that has passed through the first area. By providing a distance of approximately 10 mm from the mounting surface 3 to the bottom 5, this second area has the effect of preventing rainwater from stagnating when draining. Note that the distance between the mounting surface 3 and the bottom 5 is not limited to the above distance and may be shorter or longer than the aforementioned 10 mm, as long as the rainwater does not join and form a film. If the distance from the mounting surface 3 to the bottom 5 is not sufficiently secured, there is a risk that rainwater will join and stagnate between the metal exterior material 21 and the starter 1, and the edge of the metal exterior material 21 will be exposed to rainwater for a long time, which may cause corrosion.

[0026] The third area is a drainage path for rainwater and other water drained from the starter 1. If a distance of approximately 10 mm can be ensured between the ground-side edge of the decorative surface 7 and the drip edge 46, a larger distance (10 mm or more) can automatically be ensured from the bottom 5 to the slope 49. This reliably prevents the starter 1 and the drip edge 46 from being connected by rainwater, making it easier to drain rainwater. After construction, this drainage mechanism becomes less visible from the outside, allowing the aesthetic appearance of the building to be maintained. Note that if the distance between the ground-side edge of the decorative surface 7 and the drip edge 46 is too large, the aesthetic appearance of the building cannot be maintained. Therefore, ensuring a distance of approximately 10 mm between the ground-side edge of the decorative surface 7 and the drip edge 46 is preferable both functionally and aesthetically. [Explanation of symbols]

[0027] 1 Starter 2 Fixed surface 3. Placement surface 4. Indoor slope 5 Bottom 6 Outdoor slope 7 Cosmetic surface 8 Hook 9 Support surface 10 Fixed part 11 Drain hole 12 Fixed surface end 13 Decorative surface edge 21 Metal exterior materials 22 Surface material 23 Backing material 24 Core material 25 Fixed surface 26 Fitting groove 27 Mating piece 28 Hypotenuse 29 Steps 30 Cosmetic Department 31 Start-up Department 32 Engagement groove 33 Engagement piece 34 Gasket 41 Basics 42 Foundation 43 Drainer 44 Breathable waterproof sheet 45 Fuselage 46 Drainer 47 Fixtures 48 Protrusion 49 Slope 51 Starter 52 Fixed surface 53 bottom 54 Cosmetic surface 55 Fixed part 56 Placement surface 57 Drain hole

Claims

1. A fixed surface is provided approximately perpendicular to the ground, a mounting surface extending toward the outdoor side is provided midway on the fixing surface; Furthermore, an indoor inclined surface, a bottom, and an outdoor inclined surface are provided from the end of the fixing surface on the ground side toward the outdoor side, in a substantially V-shaped cross section, A starter characterized in that a decorative surface is provided on the outdoor side of the outdoor side inclined surface, A starter for metal exterior materials is characterized in that a hook portion and a support surface are provided on the indoor side of the fixing surface.

2. 2. The starter for a metal exterior material according to claim 1, wherein a plurality of drain holes are provided at the bottom of the starter.

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