JP2000234404A - In-wall ventilation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an in-wall ventilation structure securing fire protection and excellent in workability by nailing a furring strip and forming it by a material having fire protection performance. SOLUTION: An in-wall ventilation layer 4 is formed between an outer wall face material 1 stuck on a substrate face material 2 through a furring strip 3 and the substrate face material 2. At first, the outer wall face material 1 and a furring strip 3 is formed by a wood piece cement material into a plate material. The furring strip 3 is provided on the joint of adjacent outer wall face materials 1, 1. Nailing can be performed thereby to make workability good. In addition, since the furring strip 3 has fire protection performance, the spread of a fire can be prevented from the joint of the outer wall face materials. Thereby execution and fire protection are compatible and design does not limited to be suppressed at a low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-wall ventilation structure provided with an in-wall ventilation layer and having fire resistance.

[0002]

2. Description of the Related Art Conventionally, an in-wall ventilation structure disclosed in Japanese Patent Application Laid-Open No. 61-286434 is known. The in-wall ventilation structure described in the above publication is such that an in-wall ventilation layer is formed between an outer wall material adhered to a base surface material via a trunk edge and the base surface material. In the above in-wall ventilation structure, in the case of using a wooden body edge, a base material is attached to a vertical frame material, and a body edge is nailed and attached to an outer wall side of the base material, and the body edge is further attached. The outside wall material is nailed and attached to the outdoor side. In the case of using a frame made of a metal frame material, a base material is attached to a vertical frame material, and the metal frame material is attached to an outer wall side of the base material with screws or the like. The outer wall material is attached to the outdoor side of the material with rivets or the like.

[0003]

However, in the above-mentioned prior art, in the case where a wooden rim is used, a joint attached to a joint of an outer wall material is opened in the event of a fire from the outside, and the wooden rim becomes open. It burns and there is a problem in fire prevention. In order to prevent this, it is necessary to provide a molding material further outside the joint of the outer wall material to secure fire resistance, but this is a design limitation. Further, in the case of using the rim made of a metal frame material, there is no problem in fire prevention as described above, but since nails cannot be hit on the outer wall material, workability is poor. There is also a problem that the cost of the metal frame material is higher than that of the wooden material.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a ventilation structure in a wall which can secure fire resistance and has good workability.

[0005]

According to the first aspect of the present invention,
In the in-wall ventilation structure in which the in-wall ventilation layer is formed between the outer wall material adhered to the base material through the body edge and the base material, the body edge is nailable and has fire protection performance It is characterized by being formed of a material.

In the present invention according to the first aspect of the present invention, examples of the material capable of being nailed and having fireproofing properties include a fiber chip cement board such as a wood chip cement board and a flexible board.

According to a second aspect of the present invention, there is provided an in-wall ventilation structure in which an in-wall ventilation layer is formed between an outer wall material adhered to a base surface material via a body edge and the base surface material. It is characterized in that the surface of the torso bordering the outer wall material is covered with a fireproof sheet.

In the present invention, the fire-resistant sheet may be an inorganic sheet material mainly composed of an inorganic fiber material such as glass fiber, a thin plate of a metal material such as aluminum, or exposed to a high temperature such as in a fire. A fire-resistant sheet that sometimes expands and foams in the thickness direction to form a fire-resistant heat-insulating layer can be used.

(Function) The ventilation structure in a wall according to the first aspect,
Since the body edge is formed of a nailable material, workability is good. And since a fuselage rim is formed with the material which has fire prevention performance, fire spread from a joint of an outer wall material can be prevented. Therefore, both workability and fire protection can be achieved.

According to the second aspect of the present invention, the surface in contact with the outer wall material of the rim is covered with the fire-resistant sheet.
The spread of fire from the seam of the outer wall material can be prevented. And since it can be nailed to the wooden rim by penetrating a fireproof sheet, workability is not spoiled. Therefore, both workability and fire protection can be achieved.

[0011]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of an in-wall ventilation structure according to an embodiment of the present invention. In FIG. 1, 1 is an outer wall material, 2 is a base material, 3 is a rim, and 4 is an in-wall ventilation layer. The in-wall ventilation structure of the present embodiment is such that an in-wall ventilation layer 4 is formed between the outer wall material 1 stuck to the base surface material 2 via the trunk edge 3 and the base surface material 2. is there. The body edge 3 is a plate material having a rectangular cross section made of a wood chip cement material which is a material having a fire-preventing property and capable of being nailed. Further, the outer wall material 1 is formed of a wood chip cement board similarly to the body edge 3, and the body edge 3 is provided at a joint between the adjacent outer wall materials 1, 1. The lower ground material 2 is a wooden plywood, and is attached with a nail 6 to a vertical frame material 5 to which an inner wall material (not shown) is attached. Installed. Then, the outer wall materials 1, 1 whose end faces are abutted are attached to the body edge 3 with nails 6.

According to the in-wall ventilation structure of this embodiment, the rim 3 is formed of a nailable wood chip cement material, so that workability is good. And since the fuselage rim 3 has fire prevention performance, it is possible to prevent the spread of fire from the seam of the outer wall materials 1, 1. Therefore, both workability and fire protection can be achieved.

FIG. 2 is another embodiment of the present invention, and is a cross-sectional view of an in-wall ventilation structure. In the present embodiment, the same components as those in the above-described embodiment are denoted by the same reference numerals and description thereof is omitted, and only different components are denoted by different reference numerals. In the in-wall ventilation structure of the present embodiment, the in-wall ventilation layer 4 is formed between the outer wall material 1 stuck to the base surface material 2 via the wooden rim 30 and the base surface material 2. The surface of the wooden rim 30 in contact with the outer wall material 1 is covered with a fireproof sheet 31. The outer wall materials 1, 1 whose end faces are abutted with each other,
It is nailed to the body edge 30 of a piece of wood cement board covered with a nail 6.

As the fire-resistant sheet 31 of the present embodiment, a fire-resistant sheet that expands in the thickness direction when exposed to a high temperature such as a fire to form a fire-resistant heat-insulating layer was used. The refractory sheet preferably has an expansion ratio of 2 to 20 times when expanded in volume under heating conditions of 50 kw / cm ² for 30 minutes, and preferably has a thickness of 0.3 to 5.0 mm. 0.
If it is less than 3 mm, sufficient heat insulating properties cannot be exhibited even if expanded, and if it exceeds 5.0 mm, it is heavy and handling becomes difficult.

The basic component of the refractory sheet is a resin composition containing a thermoplastic resin and / or a rubber substance, a phosphorus compound and an inorganic filler. The resin composition exhibits sufficient heat insulating properties due to expansion, can be formed into a sheet, and has excellent handleability. Although it does not specifically limit as said inorganic filler, It is preferable to use hydrates, such as aluminum hydroxide, and metal carbonates, such as calcium carbonate. Also,
In addition to the thermoplastic resin and / or the rubber substance, the phosphorus compound and the inorganic filler, neutralized heat-expandable graphite, polyhydric alcohol, and the like may be added to the refractory sheet.

The following resin composition was used as a specific example of the refractory sheet. Butyl rubber 42 parts by weight Polybutene 50 parts by weight Hydrogenated petroleum resin 8 parts by weight Ammonium polyphosphate 100 parts by weight Thermally expandable graphite 20 parts by weight Aluminum hydroxide 75 parts by weight Calcium carbonate 75 parts by weight Expansion ratio of fire resistant sheet made of the above resin composition Is 6.
It was 7 times.

According to the in-wall ventilation structure of the present embodiment, the surface of the body edge 30 which is in contact with the outer wall material 1 is covered with the fire-resistant sheet 31 made of a fire-resistant sheet. The spread of fire from the fire can be prevented. And fireproof sheet 3
1 can be nailed to the rim 30 without impairing the workability. Therefore, both workability and fire protection can be achieved.

[0018]

According to the first aspect of the present invention, it is possible to achieve both workability and fire protection. In addition, there is no design restriction and the cost is low.

In the wall ventilation structure according to the second aspect, since the trunk edge is covered with the fire-resistant sheet, the workability is not impaired, and a higher fire-proof property can be secured.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an in-wall ventilation structure according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of another embodiment according to the present invention, showing an in-wall ventilation structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer wall material 2 Underground material 3, 30 Trunk edge 31 Fireproof sheet 4 Ventilation layer in wall 5 Vertical frame material 6 Nail

Claims (2)

[Claims] 1. An in-wall ventilation structure in which an in-wall ventilation layer is formed between an outer wall material adhered to a base material through a body edge and the base material, the body edge can be nailed. A ventilation structure in a wall, characterized by being formed of a material having fireproofing performance. 2. An in-wall ventilation structure in which an in-wall ventilation layer is formed between an outer wall material adhered to an undersurface material via a trunk and the undersurface material, A ventilation structure in a wall, characterized in that a surface in contact with the inside is covered with a fireproof sheet.