JPH0213617Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a heat insulating material inserted between members, such as walls, floors, and roofs of buildings.

<Prior art> Conventionally, in a plate-shaped molded member made of a foamed material such as rigid polyurethane or expanded polystyrene, the first
As shown in the figure, a large number of narrow grooves 1a and 1b cut into both surfaces of the plate extend perpendicularly to the plate surface, and the interval between the narrow grooves is smaller than the thickness of the plate, and the depth of the cut is the thickness of the plate. There was insulation inserted between members deeper than half of the depth. This heat insulating material 1 is characterized by being able to be freely compressed to a certain width in the directions of arrows a and b, and has a structure that allows it to be easily fitted into a predetermined opening between members.

<Problems to be solved by the invention> However, when using a thin insulation material with a thickness of 30 mm or less for horizontal or sloping locations such as floors and roofs, the insulation material inserted between members with the structure described above is difficult to solve. As shown in the figure, sagging occurs, and the resulting air layer in the gap 2 connects the adjacent insulation materials 1,
Since air is generated between the upper surface and the finishing material 3, air circulates with the outside, resulting in a reduction in the heat insulation effect.

In addition, a heat insulating material 1 with a plate thickness of 40 to 50 mm or more is used as a member 4,
4, as shown in FIG.
Push the other end 1b in the direction of the arrow c, push the other end 1d to the position indicated by the chain line, and then push the entire insulation material 1 between the members 4 and 4 in the direction of the arrow d, resulting in a recess of l dimension as shown in Fig. 4. Often creates depressions. in this case,
In particular, if the span between the members 4 is wide, variations in strain due to uneven compressive stress will cause unevenness to occur, leading to a decrease in heat insulation performance.

Furthermore, since the heat insulating material 1 has narrow grooves 1a and 1b that are deeper than half the thickness of the board over the entire board surface, cracks often occur when the heat insulating material 1 is compressed and inserted between members.

<Means for Solving the Problems> The present invention was made in view of the above-mentioned circumstances, and it is a plate made of a heat insulating material such as rigid polyurethane foam or polystyrene foam that is compressed when inserted between members. Approximately one-fourth of the width of the entire board on both sides only near both ends, approximately perpendicular to the board surface,
It is an object of the present invention to provide a heat insulating material inserted between members, in which the cut depth is deeper than half the thickness of the plate, and thin grooves are provided in parallel to each other.

<Function> When narrow grooves are provided on the entire plate surface as in the past,
If you try to insert a heat insulating material between the members by compressing it by applying force in the direction perpendicular to the narrow groove, the stress distribution in the direction in which the force is applied will be such that the stress near the center is smaller than that near both ends, so the narrow groove near the center will be compressed. The shrinkage is smaller than that of the narrow grooves near both ends. Therefore, when the above-mentioned heat insulating material is used in a horizontal or inclined place such as a floor or a roof, sagging occurs near the center. In addition, when used between studs of walls, joists, rafters, etc., the entire foamed plastic board is not uniform, and the density and stress transmission differ depending on the part. Because the narrow grooves are made by processing heated nichrome wire, etc., the groove spacing is not exactly constant.
In addition, since the foam density (hardness, meltability) differs locally, it is difficult for all the narrow grooves to have the same width and depth. Therefore, there is no perfect horizontal stress, and unevenness tends to occur upward or downward, and the cross-section of the edge of the plate is not precisely at right angles. Because the wood that forms the columns, joists, etc. is twisted or bent, the reaction force is not applied horizontally, and combined with the above, it creates a complex stress, so the center The stress distribution becomes uneven on both ends, causing irregularities in the insulation material, but if the width of the narrow grooves near both ends is approximately one-fourth of the width of the entire board, as in the present invention. The compressive force is most effectively applied near both ends, causing efficient contraction, and not only does it not cause sagging or unevenness due to deformation near the center where there are no thin grooves, but also no sagging occurs near both ends of the plate where there are thin grooves. .

<Example> Hereinafter, an example of the present invention will be described in detail based on the attached drawings.

FIG. 5 is a front view of one embodiment of the present invention, and FIG. 6 is an explanatory view showing the order in which the heat insulating material of FIG. 5 is inserted between members.

Figure 5 shows narrow grooves 5a on both sides near both ends of the plate, which are compressed in the directions of arrows a and b when inserted between members.
5b, 5c, and 5d are cut into thin grooves 5a,
5b, 5c, and 5d are substantially perpendicular to the plate surface, their depth is deeper than half the plate thickness, and they are parallel to each other. The width S of the portion provided with the narrow grooves is approximately one quarter of the width W of the entire board. Furthermore, the width of the narrow groove is 1
~1.5mm is good.

In order to insert the heat insulating material 5 between the members 4, 4, the sixth
As shown in the figure, first, one end 5e of the heat insulating material 5 is brought into contact with the corner of the member 4, and while pressing the other end 5f in the direction of the arrow, the other end 5f is pushed to the position shown by the chain line.
In this state, the whole is pushed in the direction of arrow f to a predetermined position.

In this way, when inserting the heat insulating material between the members, since there is no narrow groove cut in the vicinity of the center, the heat insulating material can be inserted in parallel without deformation.

It depends on the width of the insulation material mentioned above, but the width of the insulation material is usually W
is set approximately 5 mm larger than the width L between the members.

<Effects of the invention> The present invention does not have a narrow groove near the center of the insulation material, so it can be inserted between members without bending, unlike conventional ones that have narrow grooves on the entire surface. It is easy to insert the material between parts, and the narrow grooves effectively contract, so it can be pushed in with less force than before, and there is no sagging when it is installed on horizontal or sloped areas such as floors and roofs. When installed between studs such as walls, no unevenness will occur, and even when inserted between wide-span members, there will be no unevenness in the insulation material due to uneven stress caused by strain, and the insulation will not change when installed. This has the effect of reducing the number of defective products due to cracks in the material.

[Brief explanation of the drawing]

FIG. 1 is a front view of a conventional heat insulating material, FIG. 2 is an explanatory diagram showing the state in which the heat insulating material is inserted between members, and FIG. 3 is an explanatory diagram showing the order in which the heat insulating material is inserted between members. Fig. 4 is an explanatory diagram of the heat insulating material inserted between the members, Fig. 5 is a front view of an embodiment of the present invention, and Fig. 6 shows the order in which the heat insulating material shown in Fig. 5 is inserted between the members. FIG. 1, 5...Insulating material, 1a, 1b, 5a, 5b,
5c, 5d... Thin groove, 2... Gap, 3... Finishing material, 4... Member.

Claims (1)

[Scope of utility model registration request] When inserting a plate-shaped rigid polyurethane foam, polystyrene foam, or other heat insulating material, on both sides only near both ends of the plate, which are subject to compression when inserted between members, approximately one-fourth of the width of the entire plate, approximately relative to the plate surface. A heat insulating material inserted between members that has narrow grooves that are perpendicular to each other and that are deeper than half the thickness of the plate and are parallel to each other.