Exterior material structure around opening

Abstract

To provide an exterior material structure that can be easily constructed while ensuring waterproofing even when a furring strip for fastening a trim material around an opening is attached at a position distant from a sash.SOLUTION: A fixing portion of a trim material is screwed to a base portion of a trim base material, thereby fixing the trim material without fastening it to a furring strip, the trim base material being formed into a substantially L-shaped cross section from a base portion and a rising piece formed by raising an end of the base portion and further provided with a high-friction watertight material at a tip portion of the rising piece, and the trim material being formed into a substantially Z-shaped cross section from the fixing portion, a supporting portion formed by raising an end of the fixing portion, and a covering portion formed by bending the supporting portion so as to be substantially parallel to the fixing portion.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to an exterior material structure around an opening in a building. [Background technology]

[0002] When an opening in a building meets an exterior material, it is necessary to use a material such as siding to hide the edge of the exterior material and to ensure waterproofing around the opening.

[0003] Conventionally, a method of fastening long two-piece members together as parting materials for exterior materials has been used because of its ease of installation. One two-piece parting material is fixed by fitting the insertion portion of a "decorative cap" into the fastening groove of a "fastening body" that is placed before the exterior material is installed (Patent Document 1).

[0004] In addition, as in Patent Document 2, there is an example in which a "water-repellent material" (reference numeral 2) and a "trimming material" (reference numeral 6) are used as a waterproof structure for the upper edge of the opening and the lower end surface of the exterior material. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Published Patent Publication No. Hei 3-287971 [Patent Document 2] Japanese Patent Application Laid-Open No. 2010-236247 Summary of the Invention [Problem to be solved by the invention]

[0006] In sash and other openings, the sash flange becomes thicker due to the use of resin sashes, and furring strips used to fasten exterior materials and exterior material components are often positioned so that they do not overlap the sash flange. Fastening exterior components to furring strips positioned away from the sash frame in this way results in excessive joint spacing between the sash and the furring strip, making it difficult to properly install non-formal sealants. Therefore, it is necessary to fasten exterior material components with sufficient joint spacing to properly install non-formal sealants. When furring strips are installed away from the sash so as not to overlap the sash flange, components such as those described in Patent Document 1, for example, lack support from the furring strip when fitting the insert into the locking groove. This makes it difficult to fit the insert of the decorative cap into the locking groove of the locking strip. Furthermore, components such as those described in Patent Document 2 lack furring strips at the screw fixing points of the trim, making it impossible to secure the trim.

[0007] In view of the above circumstances, the present invention aims to arrange a trim member for exterior materials while ensuring watertightness at the joint between an opening such as a sash and the exterior material, even when the furring strip is arranged at a position away from the opening such as a sash. [Means for solving the problem]

[0008] In order to solve these problems, the present invention provides an exterior material structure in which an exterior material is sandwiched between a trim base material and a trim material as an exterior material component, the trim base material being formed into a roughly L-shaped cross section from a base portion and a rising piece formed by raising the end of the base portion, and a high-friction watertight material being provided at the tip portion of the rising piece, the back side end of the exterior material being covered by the base portion, the trim material being formed into a roughly Z-shaped cross section from a fixing portion, a supporting portion formed by raising the end of the fixing portion, and a covering portion formed by bending the supporting portion so that it is roughly parallel to the fixing portion, the side end of the exterior material being covered by the supporting portion and the front side end of the exterior material being covered by the covering portion, the trim material being fixed by screwing the fixing portion of the trim material to the base portion of the trim base material, and the watertight material of the trim base material being in close contact with the frame of the opening.

[0009] Alternatively, the tip of the rising piece of the trim base material may be folded back to the side opposite the base portion to form a folded piece, and a high-friction watertight material may be provided on the folded piece. [Effects of the Invention]

[0010] According to the present invention, an exterior material structure can be provided around an opening that is easy to install regardless of the position of the furring strips. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view showing an example of the construction order of exterior materials and components around an opening according to the present invention. [Figure 2] FIG. 1 is a perspective view showing an example of the construction order of exterior materials and components around an opening according to the present invention. [Figure 3] FIG. 1 is a perspective view showing an example of the construction order of exterior materials and components around an opening according to the present invention. [Figure 4] FIG. 2 is a side view of the upper side of the opening showing an example of an exterior material structure around the opening according to the present invention. [Figure 5] FIG. 2 is a side view of the underside of an opening showing an example of an exterior material structure around an opening according to the present invention. [Figure 6] FIG. 2 is a side view of the opening side surface showing an example of an exterior material structure around the opening according to the present invention. [Figure 7] FIG. 2 is a side view of the opening side surface showing an example of an exterior material structure around the opening according to the present invention. [Figure 8] 1 is a side view showing an example of a trim base material according to the present invention. FIG. [Figure 9] 1 is a perspective view showing an example of a trim material according to the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION [Example]

[0012] An embodiment of the exterior material structure around an opening according to the present invention will be described below with reference to the drawings.

[0013] An outline of the construction sequence for exterior materials and components is shown in Figures 1 to 3, and the exterior material structure around an opening of the present invention is shown in Figures 4 to 7. The exterior material structure around an opening of the present invention is designed to encase the exterior material 1 around the opening 2 with a trim base material 3 (Figure 8) and a trim material 4 (Figure 9), covering the edge of the exterior material 1, and to press the watertight material 33 of the trim base material 3 against the frame of the opening 2 to seal it tightly and waterproof it when it interfaces with the opening 2. Furthermore, the fastening method for the trim material 4 does not need to be changed whether the furring strip 5 is attached so as not to overlap the flange 21 of the sash 2 or so as to overlap it.

[0014] The exterior materials 1 according to the present invention are arranged adjacently to form an exterior wall, and the exterior materials 1 are long rectangular panels such as siding materials, metal panels, ceramic panels, and wood-based panels, as long as they are plate-shaped regardless of material or thickness. For example, metal siding made by integrating multiple materials is also acceptable.

[0015] The opening 2 according to the present invention is a fixture such as a window or a door provided on an exterior wall surface. In this embodiment, a sash window is attached to the opening 2.

[0016] Figure 8 shows a trim base material 3 according to the present invention. The trim base material 3 described in paragraph 0008 is shown in Figure 8(a). Figures 4 to 7, which illustrate the exterior material structure around an opening according to the present invention, use the trim base material 3 shown in Figure 8(b). To explain the trim base material 3 shown in Figure 8(b) in more detail, the trim base material 3 is a long, elongated member formed with a base portion 31 and a rising piece 32 extending from the end of the base portion 31, with a roughly L-shaped cross section. The tip of the rising piece 32 is provided with a folded piece 35, and a high-friction watertight material 33 is also provided. The angle between the rising piece 32 and the base portion 31 is preferably a right angle or a slightly obtuse angle. The trim base material 3 is attached before the exterior material 1 is fixed, as shown in Figure 1. After the exterior material 1 is installed as shown in Figure 2, the trim base material 4 is fastened to the trim base material 3 with screws 6 as shown in Figure 3. The trim base material 3 can be made by processing a painted steel plate, but it may also be made of other metal plates such as aluminum, or made of resin.

[0017] The trim 4 (Fig. 9) is a long member that has a roughly Z-shaped cross section and is made up of a fixed portion 41, a support portion 42 formed by raising the end of the fixed portion 41, an inclined portion 43 formed by bending the support portion 42, a raised portion 44, and a covering portion 45 formed by bending the raised portion 44 so that it is roughly parallel to the fixed portion 41. The angle between the covering portion 45 and the supporting portion 42 of the trim 4 is preferably a right angle or a slightly acute angle. The trim 4 can be formed by processing a painted steel plate, but it may also be made of other metal plates such as aluminum, or made of resin.

[0018] As shown in Figures 5 to 7, after the trim base material 3 is attached, the rear end of the exterior material 1 is overlapped and the exterior material 1 is attached, so that the rear end of the exterior material 1 is covered by the trim base material 3. After the exterior material 1 is installed, the trim material 4 is attached, so that the end of the exterior material 1 is covered by the trim base material 3 and the trim material 4.

[0019] 5 and 6, the edge side of the exterior cladding material 1 also functions as a waterproofing member that prevents water from seeping in further when water gets inside the trimming material 4. The trimming base material 3 also has a watertight material 33, which is pressed against the frame of the opening 2 such as a sash to form a tight seal, thereby sealing off the water at the interface between the opening 2 and the exterior cladding material 1.

[0020] The base portion 31 of the trim base material 3 is fastened to the furring strip 5 with nails or screws and fixed in place. The end of the trim material 4 is placed on the base portion 31 so that it is in contact with the rising piece 32, and the trim material 4 is fixed to the base portion 31 of the trim base material 3 with screws 6. In the figure, two ribs 34 are provided on the base portion 31 to reinforce rigidity and improve watertightness, and one of the ribs 34 is used to position the trim material 4 and also serves as a marker for where to drive the nail or screw.

[0021] The high-friction watertight material 33 of the trim base material 3 is firmly adhered to the folded piece 35 with adhesive or the like (Figure 8(b)). This watertight material 33 provides waterproofing at the edge of the sash. Furthermore, if the furring strip 5 is installed so that it does not overlap the flange 21 of the sash 2, and the trim material 4 is fastened to the trim base material 3 with screws 6, without support from the furring strip 5 at the screw 6 fastening position, the trim base material 3 and the trim material 4 will deform, causing problems with the adhesion between the sash 2 and the watertight material 33 and the appearance of the exterior wall. Using the high-friction watertight material 33 can prevent the trim base material 3 and the trim material 4 from deforming when fastened with screws 6.

[0022] The watertight material 33 is made of a long, thin rectangular parallelepiped, elastically deformable material with high waterproofing and high friction, such as ethylene propylene rubber, polyvinyl chloride, or thermoplastic elastomer. It is adhered to the folded piece 35 of the trim base material 3 along its entire length (Figure 8(b)). The watertight material 33 is pressed against the sash frame to make it fit tightly, so it is desirable to place it directly opposite the sash frame. In Figure 8(b), the tip of the rising piece 32 is folded back to the side opposite the base to form the folded piece 35, which is parallel to the surface of the sash frame, and the watertight material 33 is attached to this folded piece 35.

[0023] The edge of the exterior material 1 is sandwiched between the trim base material 3 and the trim material 4, and more specifically, the support portion 42 of the trim material 4 covers the side edge of the exterior material 1, and the covering portion 45 covers the front side edge of the exterior material 1. Furthermore, the fixing portion 41 of the trim material 4 is overlapped on the base portion 31 of the trim base material 3 and fastened with screws 6, thereby fixing the trim material 4 to the trim base material 3.

[0024] At the joint on the upper side of the sash 2, drainage holes 46 should be provided at regular intervals across the support portion 42, inclined portion 43, and raised portion 44 of the trim 4, as shown in Figure 9(b), to allow any infiltrating rainwater to drain. If the angle between the support portion 42 and the covering portion 45 is acute, drainage holes 46 can be provided on the exterior side of the support portion 42, as shown in Figure 4, allowing rainwater to flow in the direction of the drainage holes 46 and be drained. In addition, on the left, right, and bottom sides of the sash 2, a formable sealant 7 will be applied to the exterior wall decorative surface side, and by providing such an acute angle, it is possible to provide an appropriate joint spacing for the formable sealant 7 between the sash 2 and the trim 4.

[0025] As shown in Figure 4, as a standard waterproofing construction for openings 2 such as sashes, a breathable waterproof sheet 8 and waterproof tape 9 are installed under the furring strip 5. [Explanation of symbols]

[0026] 1. Exterior materials 2 Openings (sashes, etc.) 21. Spit 3 Parting base material 31 Base 32 Standing piece 33 Watertight materials 34 Ribs 35 Folding piece 4. Trim 41 Fixed part 42 Support part 43 Slope 44 Start-up Department 45 Covering part 46 Drain hole 5. Fuselage 6 screws 7. Unshaped sealant 71 Back-up material 8. Breathable waterproof sheet 9. Waterproof tape

Claims

1. An exterior material structure in which the end of the exterior material is sandwiched between the trim base material and the trim material around the opening of the exterior wall, The trim base material is formed into a cross section of a roughly L-shaped shape from a base portion and a rising piece formed by raising the end of the base portion, and a high-friction watertight material is provided at the tip of the rising piece, and the back side end of the exterior material is covered by the base portion. The trim material is formed into a substantially Z-shaped cross section from a fixed portion, a support portion formed by raising the end of the fixed portion, and a covering portion formed by bending the support portion so that it is substantially parallel to the fixed portion, and the side end of the exterior material is covered by the support portion and the front side end of the exterior material is covered by the covering portion, The fixing part of the trim material is fixed to the base of the trim base material with screws, An exterior material structure around an exterior material, characterized in that the watertight material of the trim base material is in close contact with the frame of the opening.

2. 2. The exterior material structure according to claim 1, wherein the edge base material is formed by folding back the tip of the rising piece to the side opposite the side where the base portion is located, and a high-friction watertight material is provided on the folded back piece.

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