JPH11193578A - External wall plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve execution by executing an inorganic external wall plate having an evenness part specifying a recess area on a rear face on a substrate, and making a recess part an air cycle space. SOLUTION: The projection part 2 of an elliptical column shape and the like is discontinuously scattered on the rear face of an outer wall comprising an inorganic base plate 1, and a recess part 3 continued on the other part is formed. Next, the area rate of the recess part 3 to the surface area of the rear face of the base plate 1 is made 20-80%. Next, when the outer wall plate is continuously executed on the outer wall substrate structural material of a building, an air cycle space is formed between an outer wall and an outer wall substrate structural material in succession to the recess part 3 of the adjacent outer wall plate. Thereby the air cycle space continued over a plurality of the outer wall plates can be formed only by executing the outer wall plate on the substrate structural material, the air can be naturally circulated in the space to prevent dew condensation, in addition, sufficient strength can be displayed for impact from the outer wall since the outer wall is adhered and executed on the substrate structural material, and since the outer wall plate need not be thick, a cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer wall plate made of an inorganic substrate, and more particularly to an outer wall plate used for providing an air cycle space through which air flows in a wall of a house.

[0002]

2. Description of the Related Art A conventional exterior wall plate has a smooth back surface, and a pattern printing, a colored coating, a concavo-convex pattern, or the like is applied to the surface.

[0003] In recent years, a construction method has been proposed in which an air cycle space through which air flows is provided in the wall of an outer wall structure. The outer wall structure in this case, pillars, after successively constructing the outer wall underlay plate and waterproof sheet on the underlying structural material such as studs,
In order to provide an air cycle space that communicates in the vertical or horizontal direction on the wall surface on it, a vertical waist edge or a horizontal waist edge is attached, and the smooth back surface of the outer wall plate is adhered on the waist edge and constructed. there were.

[0004]

In the construction of the conventional air cycle outer wall structure, since the outer wall plate is installed after the rim is attached in order to provide an air cycle space, there is a problem that the installation work is time-consuming. there were.

[0005] Further, since the outer wall plate constructed on the waist edge is floated from the outer wall lower adhesive plate and the waterproof sheet, the outer wall plate is vulnerable to an external impact. Because of the need to improve the impact properties, an increase in cost was unavoidable.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems in the prior art, and to provide an exterior panel having an air cycle outer wall structure obtained by a simple construction and having excellent impact resistance. Aim.

That is, in the outer wall plate according to the present invention, an uneven portion is provided on the back surface of the inorganic substrate, and the concave portion is provided so that the area ratio to the surface area of the back surface of the inorganic substrate is 20 to 80%. Are discontinuously scattered, and the concave portions provide a continuous air cycle space across the plurality of outer wall plates between the outer wall plate and the base structural material when the outer wall plate is applied on the base structural material. Features.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An outer wall plate according to the present invention is a cement plate,
It is composed of an inorganic substrate such as a slag cement board, a wood chip cement board, an ALC board, a pearlite board, a calcium silicate board, etc., and at least the back surface thereof (that is, the surface that becomes the base structure material side during construction) by embossing, cutting, coating or the like. An uneven portion is provided.

[0009] The convex portion of the concavo-convex portion has an arbitrary cross-sectional shape such as a circle, an ellipse, a triangle, a rhombus, a square, and a rectangle, and may have a columnar or conical shape. Further, the shapes (entire shape / surface shape) of the plurality of protrusions may be all the same or different shapes may be used in combination. The surface areas of the projections may all be the same or different.

A plurality of protrusions are discontinuously scattered on the back surface of the inorganic substrate, and are adjacent to each other between adjacent protrusions on one outer wall plate, and between two adjacent outer wall plates when connected. It is preferable that the cross-sectional area of the concave portion formed between the convex portions is 20 mm ² or more, and the height of the convex portion and the interval between the adjacent convex portions are all 3 mm or more. The cross-sectional area of the recess between the protrusions is 20m
less than m ^2, the protrusion height and spacing is less than 3 mm,
Due to the frictional resistance of the air, the natural circulation of the air in the concave portion is not smoothly performed.

The surface and / or the back surface of the inorganic substrate can be subjected to a base treatment such as a sealer treatment or an undercoat treatment to achieve waterproofness and surface reinforcement. The base treatment may be performed on the back surface provided with the uneven portion, or may be performed on the front surface not provided with the uneven portion.

The surface of the inorganic substrate can be provided with an optional makeup or pattern irregularities by pattern printing, coloring, or the like after or without the above-described base treatment. By forming an uneven pattern similar to that of the back surface on the front surface of the inorganic substrate, and applying the base treatment and makeup to the front and back surfaces in the same manner, it is provided as an outer wall plate that can be used reversibly.

[0013] The outer wall plate of the present invention is constructed with the back surface having the uneven portion facing the inner wall. Specifically, a plywood, a fiberboard, a particleboard or other outer wall lower adhesive plate is fixed on an underlying structural material such as a pillar, a stud, etc., and a waterproof sheet is attached thereon. The outer wall plate is fixed so that the surface of the convex portion on the back surface contacts. When the outer wall panel is continuously connected to the base structural material, the concave portions are continuous in the adjacent outer wall panel to provide a continuous air cycle space across the plurality of outer wall panels between the outer wall panel and the waterproof sheet. .

The area ratio of the concave portion to the surface area of the back surface of the inorganic substrate is preferably 20 to 80%. In other words, it is preferable that the porosity formed between the waterproof sheet and the waterproof sheet in the construction state is 20 to 80%. If the area ratio or the porosity is less than 20%, the internal pressure in the air cycle space becomes too high, and natural circulation is impaired due to frictional resistance of air. On the other hand, if this exceeds 80%, a sufficient internal pressure cannot be obtained in the air cycle space, and partial convection of air occurs in the air cycle space, so that natural circulation is not performed.

FIG. 1 and FIG. 2 show an outer wall plate according to an embodiment of the present invention, in which an elliptic columnar convex portion 2 which is discontinuously scattered is provided on the back surface of an inorganic substrate 1, and the other portions are continuous concave portions. It is 3. When this outer wall plate is connected and constructed on the outer wall base material of the building, the concave portion 3 is continuous in the adjacent outer wall plate, and the air cycle space is formed between the outer wall base material and the outer wall base material. FIG. 3 shows a modified example of the outer wall plate, in which a convex portion 2 is provided.
Is cut off at a pair of side ends facing each other to form a semi-elliptical column-shaped member 2 ′, and is connected to a similarly-shaped convex portion 2 ′ at a corresponding position on an adjacent outer wall plate when connected and constructed. It is configured so as to form an elliptic column-shaped projection. These are only examples of the present invention and are not intended to be limiting in any way.

[0016]

According to the present invention, a plurality of projections scattered discontinuously and a continuous recess between the projections are provided on the back surface of the outer wall plate. By simply constructing, the continuous air cycle space is formed across the plurality of outer wall plates between the outer wall plate and the base structural material, and the natural circulation of air is performed in the space to prevent dew condensation. Can be.

[0017] Since the outer wall plate of the present invention is closely adhered to the underlying structural material, it exhibits sufficient strength against external impacts. Therefore, it is not necessary to thicken and reinforce the outer wall plate. Can be achieved.

[Brief description of the drawings]

FIG. 1 is a plan view of a back side of an outer wall plate according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a rear side plan view of an outer wall plate according to another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 inorganic substrate 2, 2 'convex portion 3 concave portion

Claims (1)

[Claims] An uneven portion is provided on the back surface of the inorganic substrate, and the recess has an area ratio of 20 to the surface area of the back surface of the inorganic substrate.
凸 80%, a plurality of convex portions are scattered discontinuously, and the concave portions are formed between the outer wall plate and the underlying structural material when the outer wall plate is constructed on the underlying structural material. An outer wall plate that provides a continuous air cycle space over the outer wall plate.