JPH0874401A - Outer wall structure of building - Google Patents

Abstract

PURPOSE: To provide the outer wall structure of a building, which can securely prevent the generation of crack in a mortar layer due to the distortion of a building frame and which can secure the sufficient fire-resistance and which can reduce the cost and shorten the construction period, and furthermore, which has the excellent sound-proof characteristics and the excellent heat insulating property. CONSTITUTION: The outer wall structure is provided with plural spacers 21, which are fixed to the outer surface of a building frame 10 with a space from each other and which are made of elastic body, a wire-netting 23, which is fixed to the outer surface of the spacers 23 and which is fitted with a space from the building frame 10, and a plastered wall layer 24 such as mortar, which is executed to the wire-netting 23 so as to embed the wire-netting 23 therein. Void layers 40, which are respectively formed of a clearance between the plural spacers 21, are formed between the building frame 10 and the plastered wall layer 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer wall structure of a building suitably applied to an outer wall of a wooden construction.

[0002]

2. Description of the Related Art Conventionally, as an outer wall structure of a wooden construction, FIG.
Plywood (1c) of building frame (1) having studs (1a), wood shears (1b), plywood (1c), etc.
An asphalt felt (2) is nailed to the outer surface, a metal lath (4) is attached to the asphalt felt (2) by a staple (3), and mortar is rubbed, an intermediate coating and a top coating are applied in this order to form a mortar layer (5). After that, a mortar-coated outer wall structure in which a finishing material is applied to form a finishing layer (6) is well known.

[0003]

However, in the above conventional outer wall structure, since the building frame (1) and the mortar layer (5) are integrated, the building frame (due to structural distortion, etc.) When strain stress occurs in 1), the influence of the stress affects the mortar layer (5), and the mortar layer (5)
There is a problem that cracks occur in the resin, which not only impairs the appearance but also reduces the strength. Although a technique has been developed to suppress the occurrence of cracks by using a lightweight mortar having elasticity as the mortar, even though the lightweight mortar has a limit in elasticity, the occurrence of cracks can be ensured. It was not something that could be prevented.

On the other hand, when constructing the above-mentioned outer wall structure, plastering work (wet work) such as mortar coating work is
Since it requires a high degree of skill and is very complicated, it is desired to reduce the work. However, in order to obtain sufficient fire protection performance, the mortar layer (5) which becomes the non-combustible layer
However, there is a problem that the mortar coating work is troublesome and the work cost is increased and the work period is prolonged.

Furthermore, in recent years, in order to improve the habitability of buildings such as wooden houses, there is an increasing demand for sound insulation and heat insulation. In the future construction field, It is necessary to fully deal with the above requirements.

The present invention solves the above-mentioned problems of the prior art, can reliably prevent the occurrence of cracks in a coating wall layer such as a mortar layer, and at the same time reduces the construction cost and construction period while ensuring sufficient fireproof performance. It is an object of the present invention to provide an outer wall structure of a building that can reduce the length of the building and that is excellent in sound insulation and heat insulation.

[0007]

In order to achieve the above object, an outer wall structure of a building according to the present invention comprises a plurality of spacers, which are fixed to the outer surface of a building frame with a space therebetween and are made of an elastic body, A wire mesh fixed to the tip surface of the spacer at a distance from the outer surface of the building frame, and a coating wall layer formed of a coating wall material such as mortar, which is coated so as to embed it in the wire mesh, The gist is that a void layer formed by a gap between the plurality of spacers is formed between the building frame and the painted wall layer.

In the present invention, it is preferable to employ a structure in which a moisture-proof sheet for preventing moisture absorption from the void layer into the building body is attached to the outer surface of the building body.

Further, in the present invention, it is desirable to adopt a structure in which a back sheet is attached to the inner surface side of the wire mesh.

Further, the thickness of the void layer is 3 mm to 20.
It is preferable to adopt a configuration in which the thickness is set to mm.

Further, in the present invention, as the wire,
It is even more preferable to adopt a configuration in which a knitted wire mesh having an octagonal mesh is used.

[0012]

In the outer wall structure of the building of the present invention, the wire mesh is attached to the outer surface of the building body through a plurality of spacers made of an elastic body, and the wire mesh is spaced outward from the outer surface of the building body. Since the wall material such as mortar is coated so as to bury it, and a void layer is formed between the building body and the wall layer, strain stress caused by distortion etc. occurred in the building body. Even so, the stress is absorbed by the elastic deformation of the spacer, and the influence of the strain stress can be prevented from reaching the coating wall layer such as the mortar layer.

Further, since the air gap layer is present between the building frame and the painted wall layer, heat transfer between them can be efficiently suppressed, so that even if the painted wall layer as a noncombustible material is formed thinly, Sufficient fire protection performance can be secured. Further, due to the presence of the air gap layer, excellent heat insulation performance and sound insulation performance can be obtained.

In the present invention, when the construction in which the waterproof sheet is attached to the outer surface of the building body is adopted, it is possible to prevent water from being impregnated into the building body from the void layer.

Further, in the present invention, on the inner surface side of the wire mesh,
When adopting the configuration in which the back sheet is attached,
The work of coating the wall mesh with the wire mesh can be performed smoothly.

Further, in the present invention, when the thickness of the void layer is set to a specific value, sufficient fireproof performance, heat insulation performance and sound insulation performance can be obtained more reliably.

Further, in the present invention, when the rigid metal wire rod is made of a wire mesh in which the wire is woven in an octagonal shape, sufficient strength can be obtained for the coated wall layer.

[0018]

1 is a sectional view showing an outer wall structure of a building which is an embodiment of the present invention. As shown in the figure, the moisture-proof sheet (15) is attached to the outer surface of the plywood (13) of the building frame (10) having studs (11), wood shears (12) and plywood (13) by nailing or bonding. A plurality of spacers (21) made of an elastic body, a back sheet (22), and a wire mesh (2) are attached to the outer surface of the moisture-proof sheet (15).
3) are arranged and they are fixed to the building frame (10) by nails (30). Wire mesh (23)
A coated wall material such as mortar is coated on the outer surface of the coated wall layer (24) to form a finish layer (25) on the outer surface of the coated wall layer (24). Are formed.

The outer wall structure will be described in detail below.

As the moistureproof sheet (15) attached to the outer surface of the building frame (10), any moistureproof sheet can be used, and for example, asphalt roofing can be preferably used.

As the spacer (21), a relatively hard synthetic rubber having elasticity can be used. For example, ethylene vinyl acetate copolymer (EVA) can be preferably used, and EVA Foams can also be used.

The spacer (21) can be used in any shape, for example, a small piece piece formed in a polygonal shape such as a quadrangle shape and a hexagonal shape, a circular shape, or a triangular shape. In addition to the above, it is possible to use those formed in a ring shape or a belt shape.

Further, the plurality of spacers (21) may be arranged, for example, even if the plurality of small piece-shaped spacers are arranged so as to be aligned vertically and horizontally, the strip-shaped spacers are vertically striped and horizontally striped. It may be arranged in the shape of a grid or a grid.

Further, the plurality of spacers (21) are arranged at intervals from each other and are coated with a back sheet (22), a rigid metal wire (23), a coating wall layer (24) and a finishing layer (25). Wall (20) and building frame (1
0), a void layer (40) constituted by a gap between the plurality of spacers (21) is formed.

The arrangement position of the spacers (21) is not particularly limited, but in consideration of the balance of the strength of the outer wall, it is preferable to disperse the spacers evenly on the outer wall forming surface.

As the spacer (21), those having a thickness of 3 mm to 30 mm in the direction perpendicular to the wall surface can be preferably used, and those having an upper limit value of 20 mm or less can be more preferably used. In other words, the void layer (40)
It is preferable to set the thickness to 3 mm to 30 mm, preferably 20 mm or less. That is, the thickness of the void layer (40) is
If the thickness is less than 3 mm, the void layer (4
It is not preferable because the effect of the presence of 0) cannot be fully enjoyed. On the contrary, the thickness of the void layer (40) is increased to 30
If it exceeds mm, the thickness of the entire outer wall becomes thicker, and the space cannot be effectively used, which is not preferable.

As the back sheet (22), any material can be used as long as it can receive the coated wall material at the time of applying the coated wall material to the wire mesh (23), but it is preferably moisture-proof. Asphalt felt,
It is better to use a waterproof sheet such as waterproof paper.

As the wire mesh (23), for example, a wire mesh, a metal lath, etc. can be used in addition to an ordinary wire mesh, but a knitted metal mesh having an octagonal stitch is preferably used because of its excellent rigidity. be able to.

The coating wall material for forming the coating wall layer (24) is not particularly limited, and for example, ordinary mortar such as sand mortar, special mortar such as lightweight mortar, cement of cement type, etc. Can be preferably used.

As the finishing material for the finishing layer (25), well-known finishing materials such as lysine can be used.

According to the outer wall structure of the wooden construction, the building frame (10) has a plurality of spacers (21) made of an elastic material.
Since the painted wall body (20) is formed through
Even if strain stress caused by distortion or the like occurs in the building frame (10), the stress is absorbed by the elastic deformation of the spacer (21), and the influence of the strain stress is prevented from reaching the painted wall body (20). it can. Therefore, cracks do not occur in the coating wall layer (24) such as the mortar layer, and it is possible to maintain a good aesthetic appearance and prevent a decrease in strength.

Further, the building frame (10) and the painted wall body (2
0), the void layer (40) is formed, so that the void layer (40) can efficiently suppress heat transfer between the building frame (10) and the painted wall body (20). Therefore, even if the mortar layer (24) as a non-combustible material is thinly formed, it is possible to surely meet the criteria relating to the fireproof performance, and it is possible to reduce troublesome wet work such as mortar coating work, thereby reducing the construction cost. And the construction period can be shortened.

Further, since the presence of the void layer (40) makes it possible to obtain a sufficient heat insulating effect and sound insulating effect,
It is possible to provide a building such as a wooden house with excellent habitability.

Further, since the wire mesh (23) is embedded in the painted wall body (20), the building frame (1
Even if it is independent of 0), sufficient rigidity can be secured and no problem in strength occurs. When the above-mentioned knitted wire mesh having an octagonal mesh is used as the wire mesh (23), it is possible to form the painted wall body (20) having a strength that does not cause any problems in practical use.

Further, in this embodiment, since the moisture-proof sheet (15) is attached to the outer surface of the building frame (10), it is possible to prevent moisture from impregnating the inside of the building frame (10) from the void layer (40), and thus the building frame can be prevented. In (10), it is possible to avoid the adverse effects of moisture absorption and water absorption.

Further, since the back sheet (22) is attached to the inner surface of the wire mesh (23), the coated wall material can be coated smoothly.

In the present invention, the void layer (40) is
The closed space structure may be closed to the outside or may be an open space structure connected to the outside.

In the present invention, the moisture-proof sheet (1
The fixing method of 5), the spacer (21), the back sheet (22), the rigid metal wire (22), etc. is not particularly limited. Furthermore, the number of spacers (21) to be installed is not limited.

[0039]

As described above, according to the outer wall structure for a building of the present invention, the wire mesh is attached to the outer surface of the building body through the plurality of spacers made of an elastic body, and the outer surface of the building body is exposed to the outside. At a distance, a coated wall material such as mortar is coated so as to bury the above-mentioned wire mesh, and since a void layer is formed between the building frame and the coated wall layer,
Even if strain stress caused by distortion or the like occurs in the building frame, the stress is absorbed by the elastic deformation of the spacer, and the influence of the strain stress can be prevented from affecting the painted wall layer such as the mortar layer. Therefore, cracks do not occur in the mortar layer and the like, good aesthetics can be maintained, and strength reduction can be prevented.

Further, since the air gap layer is present between the building frame and the painted wall layer, heat transfer between them can be efficiently suppressed, so that even if the painted wall layer as a noncombustible material is formed thinly, Sufficient fire protection performance can be secured. Therefore, it is possible to reduce the troublesome wet work such as mortar coating, and it is possible to reduce the construction cost and the construction period. Furthermore, the presence of the void layer can provide a sufficient heat insulating effect and sound insulating effect, so that it is possible to obtain an effect that a building such as a wooden house having excellent habitability can be formed.

In the present invention, when a structure in which a moisture-proof sheet is attached to the outer surface of the building body is adopted, it is possible to prevent the sheet from absorbing water in the building body,
There is an advantage that adverse effects due to moisture absorption and water absorption can be avoided.

Furthermore, in the present invention, on the inner surface side of the wire mesh,
When adopting the structure in which the back sheet is attached, there is an advantage that the work of coating the wall material on the wire mesh can be performed smoothly.

Further, in the present invention, when the thickness of the void layer is set to a specific value, the above-described fireproof effect, heat insulating effect, and sound insulating effect can be more reliably obtained.

Further, in the present invention, when a knitted metal mesh having an octagonal mesh is used as the metal mesh, there is an advantage that sufficient strength can be obtained in the coating wall layer.

[Brief description of drawings]

FIG. 1 is a sectional view showing an outer wall structure of a building which is an embodiment of the present invention.

FIG. 2 is a sectional view showing an outer wall structure of a conventional building.

[Explanation of symbols]

 10 ... Building frame 15 ... Waterproof sheet 21 ... Spacer 22 ... Back sheet 23 ... Wire mesh 24 ... Paint wall layer 40 ... Void layer

Claims (5)

[Claims] 1. A plurality of spacers, which are fixed to the outer surface of the building frame with a space between each other and are made of an elastic body, and a wire mesh, which is fixed to the tip surface of the spacer with a space from the outer surface of the building body, And a coating wall layer made of a coating wall material such as mortar, which is coated so as to be embedded in a wire net, and is constituted by a gap between the plurality of spacers between the building frame and the coating wall layer. The outer wall structure of a building, characterized in that a void layer is formed. 2. The outer wall structure of a building according to claim 1, wherein a moisture-proof sheet for preventing moisture absorption from the void layer into the building body is attached to an outer surface of the building body. 3. The outer wall structure for a building according to claim 1, wherein a back sheet is attached to the inner surface side of the wire mesh. 4. The thickness of the void layer is 3 mm to 20 mm.
The outer wall structure of a building according to any one of claims 1 to 3, wherein 5. The outer wall structure for a building according to claim 1, wherein a knitted wire mesh having an octagonal mesh is used as the wire.