JP7649191B2 - Wall bottom structure - Google Patents

Description

The present invention relates to a wall bottom structure with a running water function that is formed at the bottom of drywall materials used in buildings and structures.

The conventional structure for covering the bottom end of drywall material involves forming a space between the drywall material and the drip edge, and forming a through hole in the drip edge to allow rainwater to drain to the outside. (See Patent Documents 1 and 2.)

Utility Model Registration No. 3012289 Patent registration No. 3358474

However, when using drywall materials that use synthetic resin foam as the core material, rainwater that seeps into the flashing splashes up and comes into contact with the synthetic resin foam at the ends of the drywall material, causing moisture to seep into the synthetic resin foam, which can have adverse effects such as rusting of the iron plate on the surface, corrosion of the synthetic resin foam, and preventing a decrease in insulation properties due to the wall becoming wet.

In order to eliminate such drawbacks, the present invention provides a lower end structure for a wall comprising a long drywall material having female and male connecting portions at the top and bottom ends, a vertical, flat fixing portion, a bottom surface with the lower end of the fixing portion protruding outward, a decorative surface portion consisting of a bottom surface having a decorative surface protruding upward at the tip of the bottom surface, an inclined decorative surface having the tip of the decorative surface protruding inwardly, and a tongue piece hanging down from the tip of the inclined decorative surface, a groove formed in the bottom surface concavely toward the tongue piece side , water drainage holes formed by cutting out part of the groove at regular intervals, a starter forming a space from the fixing surface, bottom surface and decorative surface portion, and a long furring strip with a rectangular cross section, the starter being fixed horizontally to at least one of the base or the top of an opening such as a sash, the furring strips being inserted vertically into the space in the starter and being fixed in multiple pieces to the wall base, and the drywall material being inserted into the space formed by the furring strips.

The wall bottom structure of the present invention has the following features and effects: (1) the furring strips and drywall material are inserted into the space of a starter with multiple drainage holes for construction, so that the drainage holes quickly drain rainwater that has infiltrated inside to the outside. (2) Workability is improved. (3) The starter receives rainwater that has been generated, improving water-stopping performance. (4) The core material of the drywall material, such as the top of an opening in a sash, is notched, and the cutout surface is formed for construction, so that the ends of the drywall material do not come into contact with rainwater that has infiltrated inside. When the core material of the drywall material is a synthetic resin foam, this is effective in preventing corrosion of the synthetic resin foam, preventing a decrease in insulation due to the wall becoming a wet rag, preventing corrosion of the wall base, and preventing a decrease in the strength of the drywall material.

FIG. 2 is an explanatory diagram showing the construction state of the lower end structure of the wall according to the present invention. FIG. 2 is an explanatory diagram showing an embodiment of a starter used in a lower end structure of a wall according to the present invention. FIG. 2 is a cross-sectional view showing a drywall material used in the lower end structure of a wall according to the present invention. FIG. 2 is a cross-sectional view showing a drip edge used in the lower end structure of a wall according to the present invention. FIG. 2 is a perspective view showing a furring strip used in the lower end structure of a wall according to the present invention. FIG. 4 is an explanatory diagram showing the construction sequence of the lower end structure of the wall according to the present invention. FIG. 4 is an explanatory diagram showing the construction sequence of the lower end structure of the wall according to the present invention. FIG. 4 is an explanatory diagram showing the construction sequence of the lower end structure of the wall according to the present invention. FIG. 4 is an explanatory diagram showing the construction sequence of the lower end structure of the wall according to the present invention. 11A to 11C are explanatory diagrams showing other construction states of the lower end structure of the wall according to the present invention.

The following is a detailed explanation of one embodiment of the wall bottom structure according to the present invention, using the drawings. Namely, Fig. 1 is a cross-sectional view showing the construction state of the wall bottom structure according to the present invention, Figs. 2(a) and (b) are a cross-sectional view and a partially cutaway perspective view showing a starter A used in the wall bottom structure according to the present invention. Also, Figs. 3(a) and (b) are cross-sectional views of drywall material B, and Fig. 4 is a cross-sectional view of drip edge C.

As shown in Figures 2(a) and (b), starter A has a vertical, flat fixed portion 1, a bottom surface 2 which protrudes outward from the lower end of fixed portion 1, a decorative surface portion 3 which consists of a decorative surface 4 which protrudes upward from the tip of bottom surface 2, an inclined decorative surface 5 which protrudes inward from the tip of decorative surface 4, and a tongue 6 which hangs down from the tip of inclined decorative surface 5, as shown in the figure, a groove 7 formed in a concave shape in bottom surface 2 , water flow holes 8 which are formed by cutting out part of bottom surface 2 at regular intervals, and a space K which is formed by fixed surface 1, bottom surface 2 and decorative surface portion 3.

The fixing part 1 is the part that fixes the starter A to the wall base α using the fixing device β.

The decorative surface portion 3 covers the end grain B1 of the lower end of the drywall material B, preventing the lower end portion of the drywall material B from being exposed to the outside.

The tongue 6 is a part formed to prevent injury from the end of the starter A, which is made of a metal plate.

The drainage holes 8 are formed at a regular pitch on the bottom surface 2 to drain rainwater R that has seeped in between the drywall material B and the decorative surface 3 of the starter A to the outside. The formation pitch P of the drainage holes 8 is about 30 to 300 mm.

The materials used are thin metal sheets, such as iron, aluminum, copper, stainless steel, titanium, aluminum-zinc alloy plated steel sheets, galvalume steel sheets (registered trademark), enamel steel sheets, clad steel sheets, laminated steel sheets (such as PVC steel sheets), sandwich steel sheets (such as vibration-damping steel sheets), polyvinyl chloride resin, polycarbonate resin, etc. (including, of course, color sheets made by painting these in various colors), which are formed into various shapes by extrusion molding, roll molding, press molding, etc.

As shown in Figures 3(a) and (b), for example, drywall material B has a core material 10 formed between a front material 9 and a back material 11, female connectors 12 and male connectors 13 formed at the top and bottom ends, and a gasket 14 formed inside the male connectors 13. Drywall material B is connected by casting fasteners β and fitting the female connectors 15 and male connectors 16 together. Of course, although starter A is used for vertically laid drywall material B in the figure, it can also be used for horizontally laid drywall material B.

The front surface material 9 and back surface material 11 are made of thin metal sheets, such as iron, aluminum, copper, stainless steel, titanium, aluminum-zinc alloy plated steel sheets, galvalume steel sheets (registered trademark), enamel steel sheets, clad steel sheets, laminated steel sheets (such as PVC steel sheets), sandwich steel sheets (such as vibration-damping steel sheets), polyvinyl chloride resin, polycarbonate resin, etc. (including color sheets made by painting these in various colors) formed into various shapes by roll forming, press forming, extrusion forming, etc., or inorganic materials formed into various shapes by extrusion forming, press forming, autoclave curing forming, extrusion-drying-firing, etc.

The core material 10 is made of synthetic resin foam such as polyurethane foam, polyisocyanurate foam, phenol foam, vinyl chloride foam, polyethylene foam, polystyrene foam, urea foam, etc., and is formed by mixing a raw solution of resol-type phenol with a hardener and a foaming agent, discharging it onto the front material 9 or the back side of the back material 11, and heating it to react, foam, and harden. In addition, various types of flame retardants such as lightweight aggregates (perlite particles, glass beads, gypsum slag, talc stone, silt balloons, aluminum hydroxide, etc.) and fibrous materials (glass wool, rock wool, carbon fiber, graphite, etc.) can be mixed into the core material 10 to improve fire resistance.

To explain in more detail, the core material 10 mainly functions as a heat insulating material, a fireproofing material, an adhesive, a reinforcing material, a cushioning material, a sound absorbing material, a bulking material, a weight reducing material, etc. Of course, inorganic materials such as rock wool, glass wool, and ceramic wool may also be used as the core material 10.

The opening width of space K in starter A is approximately equal to the thickness of drywall material B plus the thickness of furring strip D.

Next, the construction sequence of the wall bottom structure according to the present invention will be described with reference to Figures 1 to 10. First, as shown in Figure 6, a long-shaped drip edge C as shown in Figure 4 is fixed via a fixing device β (not shown). Then, as shown in Figure 6, a waterproof sheet E is formed over the entire surface of the wall base α.

When the construction of the waterproof sheet E is complete, starters A as shown in Figures 2(a) and (b) are installed by casting the fixing parts 1 with fixing devices β as shown in Figure 7, and are fixed in multiples in a continuous manner to the wall base α above the water drainage C of the foundation γ part.

When installation of starter A is complete, the fixed part 1 of starter A and the waterproof sheet E are continuously bonded together using waterproof tape F as shown in Figure 8.

Once the installation of the waterproof tape F is complete, insert furring strips D as shown in Figure 5 into the space K of starter A, forming a gap K1 on the bottom surface 2 of starter A as shown in Figure 9, and install and fix multiple strips vertically from the foundation to the eaves using fasteners β (not shown) at 450 mm intervals. The gaps K1 are formed so that when rainwater seeps into starter A, it accumulates in the space K of starter A and does not submerge the bottom end of the furring strips D, preventing corrosion of the furring strips D and providing a space to cut off rainwater that may have flowed down the furring strips from above.

Finally, as shown in Figure 1, the drywall material B as shown in Figure 3(a) is connected horizontally in sequence as shown in Figure 3(b), and the male connector 13 of the lower drywall material B is inserted into the space K and fixed horizontally via the fixing device β, completing the construction from the foundation to the eaves.

Of course, various accessories are used for protruding corners, recessed corners, openings (windows, doors, etc.), eaves, etc.

In addition, openings such as sash γ1 are formed as shown in Figure 10, and the end grain B1 portion of the lower end part of the drywall material B in the starter A is cut out from the core material 10 to form a cutout surface B2, which prevents rainwater from penetrating into the core material 10 and prevents deterioration of the drywall material B.

A Starter B Drywall material B1 End of wood B2 Cutout surface C Water drainage D Furring strip E Waterproof sheet
F. Waterproof Tape
K-space
K1 Gap α Wall base β Fixture γ Foundation γ1 Sash 1 Fixing part 2 Bottom surface 3 Decorative surface part 4 Decorative surface 5 Sloped decorative surface 6 Tongue 7 Groove 8 Water flow hole 9 Surface material 10 Core material 11 Back surface material 12 Female type connecting part 13 Male type connecting part 14 Gasket

Claims (1)

A wall lower end structure comprising a long drywall material having female and male connecting portions at the top and bottom ends, a vertical, flat fixing portion, a bottom surface with the lower end of the fixing portion protruding outward, a decorative surface portion consisting of a bottom surface which protrudes upward at the tip of the bottom surface, an inclined decorative surface which protrudes inward at the tip of the decorative surface, and a tongue piece hanging down from the tip of the inclined decorative surface , a groove formed in the bottom surface in a concave shape toward the tongue piece side , a water drainage hole formed by cutting out part of the groove at regular intervals, a starter which forms a space from the fixing surface, bottom surface and decorative surface portion, and a long furring strip with a rectangular cross section, the starter being fixed horizontally to at least one of the base or the top of an opening such as a sash, the furring strips being inserted vertically into the space in the starter and being fixed to the wall base in multiple pieces, and the drywall material being inserted into the space formed by the furring strips.

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