JPH0874345A - Heat-insulating material - Google Patents

Abstract

PURPOSE: To facilitate the installation of heat-insulating materials by a method wherein the heat-insulating material to be put between supporting members is made up in a tapered structure wherein the sides thereof contacting the support members are formed in sloped shape. CONSTITUTION: A heat-insulating material 2 to be put between the supporting members 1 and 1' such as joists, columns, furring strips, etc., is made up in a structure wherein the sides thereof contacting the support members 1 and 1' are in tapered form. The width of the heat-insulating material 2 in the direction of the diatance (a) between the support members 1 and 1' is made so that the width (c) on the upper side of the heat-insulating material 2 becomes not wider than the distance (a) between the support members 1 and 1' while the width (b) on the lower side of the heat-insulating material 2 becomes wider than the distance (a) between the support members 1 and 1'. The width (c) on the upper side of the heat-insulating material 2 is made 0.95-1.00 times the distance (a) between the support members 1 and 1' while the width (b) on the lower side of the heat-insulating material 2 is made 1.0-1.1 times the distance (a). Therefore, satisfactory heat insulation can be accomplished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating material particularly suitable for heat insulating construction of buildings, mainly under floors, walls and ceilings of general houses.

[0002]

2. Description of the Related Art Conventionally, heat insulating materials have been applied to the floors, walls, ceilings, etc. of general houses. As the heat insulating material, for example, one made of a material such as expanded polystyrene is used, but a heat insulating material having a plate-like molded body having the same width dimension as the dimension between supporting members such as joist on Daihiki is used. used.
However, due to the fact that the support member and the heat insulating material are manually arranged and the wood used for the support member shrinks, a gap is apt to occur between the heat insulating material and the support member, and the heat insulating performance is deteriorated. It often happens. Further, in order to fix the heat insulating material between the supporting members, it is necessary to perform nailing and dispose the supporting member on the supporting member, which causes a time-consuming construction of the heat insulating material.

In order to solve such a problem, a technique of applying a heat insulating material having a dimension wider than the dimension between supporting members such as joists is used. If this method is used, since the heat insulating material and the support member are in close contact with each other after the heat insulating material is applied, a higher heat insulating effect can be obtained.

[0004] A problem in applying a wide heat insulating material between supporting members such as joists on Daihiki is how to reduce fitting resistance between the supporting members at the time of installing the heat insulating material. As the contents, for example, a method of providing a plurality of slits in a heat insulating material such as Japanese Utility Model Publication No. 2-13617, and applying a wide heat insulating material between narrow support members by shrinking the slits, Make a notch in the center of the heat insulating material, as in Japanese Patent Publication No. 63-11010, and in a bent state,
There is a method in which the central portion is pushed in after fitting between the supporting members.

However, of the above methods, when the heat insulating material provided with slits is used, a work step of shrinking the slits is required when the heat insulating material is applied, and the work is difficult to say. In addition, a method in which a slit is formed in the center of the heat insulating material and the heat insulating material is installed between the supporting members in a bent state is an effective method when a soft closed cell foam such as a highly expanded polyethylene resin molded body is used. Even if there is a rigid closed-cell foam such as expanded polystyrene resin molding, it is difficult to practically use because it breaks when it is bent. Processing is required.

[0006]

Therefore, the present invention makes it possible to easily install a heat insulating material of a rigid closed cell foam having a width wider than the size of supporting members such as joists on Daihiki and to provide a good heat insulating effect. The object is to provide a heat insulating structure that can be obtained.

[0007]

A heat insulating material according to the present invention is a heat insulating material filled between support members, wherein a side surface portion in contact with the support member has a tapered structure, and the heat insulating material is provided in a distance direction between the support members. The width of the upper surface of the heat insulating material is not larger than the distance between the supporting members, and the width of the lower surface of the heat insulating material is larger than the distance between the supporting members in the direction of the distance between the supporting members.

The above-mentioned support member is a joist, a pillar, a field edge or the like arranged on the Daihiki. Examples of the rigid closed-cell foam include a foamed styrene resin molded body and a rigid polyurethane foam.

It is generally known that wood used for supporting members such as joists arranged on the Daihiki contracts, and the contraction rate is generally expected to be 1 to 2%.
Further, since the support member is manually arranged by a person, the dimensional accuracy between the support members may be further lowered, and a gap is created between the installed heat insulating material and the support member, resulting in deterioration of heat insulating performance. Cause to cause. Therefore, in consideration of the dimensional accuracy between the support members, and considering the shrinkage of the wood used as the support member, it is necessary to install a heat insulating material that is at least as wide as the shrinkage of the support member at the time of execution. The width of the lower surface of the heat insulating material is determined in consideration of this. The heat insulating material must be easy to fit between the supporting members when the heat insulating material is applied, and the width of the upper surface of the heat insulating material is determined in consideration of this.

The present invention will be described with reference to the drawings. Figure 1
It is a schematic cross section which shows the relationship between the heat insulating material of this invention, and a support member. The heat insulating material 2 is fitted between the supporting members 1, 1 ′ such as joists, pillars, and field edges. In this case, the distance (width) a of the supporting members 1, 1 ′, the supporting member on the lower surface of the heat insulating material 2 The relationship between the width b in the distance direction of 1 and 1'and the width c in the distance direction of the support members 1 and 1'on the upper surface of the heat insulating material 2 is such that b is larger than a and c is equal to or smaller than a. Preferably, b is 1.02 to 1.1 times a, and c
Is 0.95 to 1.00 times a. Since c is not much larger than the dimension a between the supporting members to be fitted, the fitting resistance of the plate-shaped heat insulating material at the beginning of construction can be greatly reduced. Note that the maximum width b of the heat insulating material may be anywhere on the side surface portion as long as it is other than the upper surface, and the upper surface width of the heat insulating material is preferably the minimum width.

The shape of the heat insulating material is, in the case of a foamed styrene resin foamed molded product obtained by a bead molding method, in consideration of the draft required for facilitating the mold release of the foamed molded product, Approximately trapezoidal shape is preferable. That is, it is preferable that the side surface portion that is in contact with the support member of the heat insulating material having a tapered structure in the heat insulating material fitting direction has a width having a gradient from b to c in the sectional view shown in FIG. With the structure having the corrugated shape, the fitting resistance at the beginning of construction can be further reduced, and as a result, the insulation material can be constructed more easily.

FIG. 2 shows a plan view of another three kinds of heat insulating materials according to the present invention. The above-mentioned side surface portion is not limited to the smooth inclined shape as shown in FIG. 1, but the cross section is corrugated as shown in FIG. 2A, and the cross section as shown in FIG.
The corner of the cross section may be rounded as shown in FIG.

When the heat insulating material of the present invention is applied between the supporting members, the heat insulating material and the supporting member are brought into close contact with each other to obtain a high heat insulating effect. The material can be firmly fixed.

The distance between the joists arranged on the Daihiki is 258 m.
The heat insulating material of the present invention was applied under the floor of a general house of m. A heat insulating material having a length of 1820 mm and a thickness of 50 mm and made of a foamed styrene resin molded product, having various widths, and provided with three-sided corrugated and rectangular side portions in contact with joists was prepared. However, the width of the upper surface of the heat insulating material was fixed at 254 mm. When these heat insulating materials were applied between the joists, it was possible to apply the heat insulating material when the width of the lower surface of the heat insulating material was 258.25 mm to 283.8 mm. Especially 258.25mm-270.9m
In the range of m, the fitting resistance at the time of construction is small and the heat insulating material can be easily constructed, which is preferable.

[0015]

According to the heat insulating material of the first to fourth aspects of the present invention, it is possible to easily install a heat insulating material of a hard closed-cell foam having a width wider than the dimension between the supporting members, and a good heat insulating effect is exhibited.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a relationship between a heat insulating material and a supporting member according to the present invention.

FIG. 2 is a plan view of three kinds of heat insulating materials according to the present invention.

Claims (4)

[Claims] 1. A heat insulating material filled between supporting members, comprising:
The side surface portion in contact with the supporting member has a tapered structure, the width of the upper surface of the heat insulating material is not larger than the distance between the supporting members in the distance direction between the supporting members, and the width of the lower surface of the heat insulating material is supported in the distance direction between the supporting members. Insulation that is greater than the distance between members. 2. The width of the upper surface of the heat insulating material is 0.95 to 1.00 times the distance between the supporting members, and the width of the lower surface of the heat insulating material is 1.0.
2-1. The heat insulating material according to claim 1, which is 1 times. 3. The heat insulating material according to claim 1, wherein the material of the heat insulating material is a rigid closed cell foam. 4. The heat insulating material according to claim 3, which is a rigid closed cell foam expanded styrene resin foam or a rigid polyurethane foam.