JPH0271084A - Adiabatic wall - Google Patents

Abstract

PURPOSE:To improve adhesive properties of an elastic adiabatic body with a peripheral edge by forming a protrusion at least one of the edges of inner and outer wall plates, inserting the protrusion into the adiabatic body, and temporarily holding it to fill with foamed material. CONSTITUTION:An ice storage box 1 has box-shaped inner and outer wall plates 3, 4 formed by bending metal plates, and is formed with collars 5, 6 bent at the peripheral edges toward one wall plate. A plurality of protrusions 7 bent perpendicularly to the inside are formed on the edge of the collar 6 of the plate 4. An elastic heat insulator 8 is inserted into the protrusion 7 to be temporarily held to determine an interval between the peripheral edges of the plates 3, 4. A foaming jig is mounted at the outside of the plates 3, 4 to fill and foam an adiabatic material 9 between the plates 3 and 4. When the adiabatic material 9 is filled and foamed, the elastic body 8 is pressed against the collars 5, 6 of the inner faces of the plates 3, 4 by foaming pressure to improve the adhesive properties thereby to prevent the foaming material from leaking due to the foaming.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a heat insulating wall body used in refrigerators, freezers, prefabricated refrigerators, showcases, etc.

(σ) Prior Art As a technology prior to the present invention, there is a heat insulating wall described in Japanese Utility Model Publication No. 12757/1983. The heat insulating wall body is constructed by screwing a synthetic oil-based decorative frame over the outer surface of the connecting portion between the inner box and the outer box.

However, the inner box and outer box are made of metal plates, and although the decorative frame made of synthetic resin is press-joined with screws at the connection part, both are hard bodies in contact, and the foaming during foam filling By entering and penetrating the gap between the joints with pressure, the gap is further expanded, causing the insulation to leak from the connection between the inner box and the outer box.

(...) Problems to be Solved by the Invention The technical object of the present invention is to provide a heat insulating wall body that prevents foam leakage from the peripheral edges of an inner wall board and an outer wall board.

(d) Means for Solving the Problems The present invention provides an elastic heat insulating material from the inner surface so as to cover the peripheral edges of the inner wall board and the outer wall board, and at least one of the peripheral edges of the inner wall board and the outer wall board. This problem is solved by forming a protrusion that is inserted into the elastic heat insulator and foaming and filling the space between the inner wall board and the outer wall board with a heat insulating material.

(f) Function The present invention can temporarily hold the elastic heat insulator on the peripheral edge of the inner wall board and the outer wall board by inserting it into the protruding part, and the 1t7i-
The elastic heat insulator is compressed and deformed by the foaming pressure of the heat material and is pressed against the peripheral edge, improving the adhesion between the elastic heat insulating body and the peripheral edge.

(f) Example The present invention will be explained based on the illustrated structure.

Fig. 1 shows the first structure, Fig. 3 shows the second structure, Fig. 4 shows the third groove, and Fig. 2 is a perspective view with one side wall of the water storage 1 manufactured in each structure removed. It is.

The first purchase will be explained based on FIGS. 1 and 2.

Since the water storage 1 shown in FIG. 2 stores ice produced by an ice maker, the ice maker is connected to a1 so as to cover the upper opening. The ice cubes produced by the ice making machine fall and accumulate in the water storage 1. The front of the ice storage 1 is open, and the door body 2 is used to open and close the ice storage 1 to take out ice from the storage 1.

The water reservoir 1 has a box-shaped inner wall plate 3 and an outer wall plate 4 formed by bending sheet metal. The peripheral edges of the inner wall plate 3 and the outer wall plate 4 form a flange 5.6 bent toward one wall. A plurality of protrusions 7 are formed on the edge of the flange 6 of the outer wall board 4 to be bent inward at right angles.

An elastic heat insulator 8 into which the protrusion 7 is inserted is provided on the inner surface of the collar 5.6 of the inner wall board 3 and the outer wall board 4. The elastic heat insulating body 8 is made of urethane foam and is compressively deformed by 5 pressures, but any material may be used as long as it has good adhesion between the inner wall plate 3 and the outer wall plate 4 and is deformed by pressure. The elastic heat insulator 8 is the protrusion 7
By being inserted into the inner wall board 3, it is temporarily held and the inner wall board 3
The distance between the outer wall Fi and the peripheral edge of the outer wall Fi,4 is determined.

A foaming jig is attached to the outside of the inner wall board 3 and the outer wall board 4, and a heat insulating material 9 is foamed and filled between the inner wall board 3 and the outer wall board 4. When the heat insulating material 9 is filled with foam, the elastic heat insulating material 8 is pressed against the flange 5.6 which is the inner surface of the inner wall board 3 and the outer wall board 4 due to the foaming pressure, improving adhesion and sealing the foam surface. Prevent this from happening.

The second part shown in FIG. 3 is the protruding part 7 in FIG. When elastic to the inside 2! The body 8 is reliably prevented from coming off.

In the third structure shown in FIG. 4, the protrusion 7 is formed by a separate pin body, which is driven into the flange 6 of the outer wall board 4. The protruding portion 7 may be formed from Kinsei sugar beet, or may be formed using a nail, a screw, or the like.

In each of the above structures, the protrusion 7 is formed on the flange 6 of the outer wall board 4, but it may also be formed on the flange 5 of the inner wall board 3.
6 may be formed on both sides.

Furthermore, although the flanges 6.5 of the outer wall board 4 and the inner wall board 3 form a certain distance, they may be balanced or may overlap. By changing the dimensions of the elastic heat insulating body 8 by increasing or decreasing its width, it is possible to change the thickness of the heat insulating wall consisting of the inner wall board 3, the outer wall board 4, and the heat insulating material foamed and filled between them. If the inner wall board 3 and the outer wall board 4 are flat, the same inner wall board 3 and the same outer wall board 4 can be used to form heat insulating walls with different thicknesses.

(G) Effects of the Invention The present invention uses a simple FJI structure in which an elastic insulator is inserted into the protrusion, and the insulator can be temporarily held, and the workability of attaching it to a foaming jig is improved. The foaming pressure caused by filling improves the sealing performance of the heat insulating material and prevents foaming from leaking.

[Brief explanation of the drawing]

The figures show the present invention, FIG. 1 is a cross-sectional perspective view of the main part of the first structure, FIG. 2 is a perspective view of a water storage using the present invention, and FIG. 3 is a cross-sectional perspective view of the main part of the second ditch structure. , FIG. 1 is a cross-sectional perspective view of the main part of the third tll structure. 3...Inner wall board, 4...Outer wall board, 5.6...Brim part,
7...Protrusion part, 8...Elastic heat insulator.

Claims (1)

[Claims] 1. It consists of an inner wall board, an outer wall board, and a heat insulating material filled with foam between the inner wall board and the outer wall board, and an elastic heat insulator is arranged on the inner surface so as to cover the peripheral edge of the inner wall board and the outer wall board. A heat insulating wall body comprising a protrusion that is inserted into an elastic heat insulator on at least one of the peripheral edges of the inner wall plate and the outer wall plate.