JPS6080071A - Cabinet for refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a refrigerator cabinet 9, and particularly to an improvement in the mounting structure of a cabinet rear panel.

[Prior art]

The structure and assembly method of conventional refrigerator cabinets are the first
- Figures 7 will be explained. In the figure, 1 is an outer box made of steel plate into a gate-shaped shape having a top plate and side plates, and as shown in Figure 3, a U-shaped groove 2a is bent in the front edge of the side plate 2. A flange 2b is formed on the trailing edge. The front plate 3 is spot-welded to the U-shaped groove 2a at the lower end of the front surface of the side plate 2, and the rear plate 4, the bottom of which is bent into a flange piece 4a, is spot-welded to the inner surface of the flange 2b on the rear surface of the side plate 2. do.

Further, a bottom plate 5 is placed over the front plate 3 and the rear plate 4 and spot welded. Thereafter, the outer box 1 is rust-proofed and painted, and the inner box 6 (molded with synthetic resin etc.) in the U-shaped groove 2a (
6), and polyurethane heat insulating material 7 is injected into the gap space of both the inner and outer boxes 1.6, foamed and solidified, and the refrigerator cabinet is completed.

However, in the above-mentioned cabinet, a) the rear plate 4 is welded to the outer case 1, so there are many welding points, and a large amount of electric power is required for welding, which increases welding costs.

b) There are welding marks 2c on the flange 2b of the side plate 2 as shown in Figure 4.
remains, which is unfavorable in terms of appearance. Further, a correction process is required due to occurrence of sputtering, etc.

C) During the painting process, an edge 2d is formed at the joint between the flange 2b of the side plate 2 and the rear plate 4 as shown in Figure 5, which causes poor adhesion of the paint film and tends to cause so-called "splats" in the paint film. repainting) is required.

d) When injecting and foaming the polyurethane heat insulating material, as shown in FIG. 7
leakage, so a leak-proof seal is required in advance in the gap 8.

There were many drawbacks such as.

[Summary of the invention]

This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and instead of assembling the side plates and the ridge plate of the outer case by welding, they are fixed by the pressing force of the heat insulating material. The purpose of this invention is to provide a refrigerator cabinet that significantly reduces welding costs, improves the appearance, and does not require a leak-proof seal for insulation.

[Embodiments of the invention]

An embodiment of this invention will be described below with reference to the drawings.

In FIGS. 8 to 13, reference numeral 9 denotes an outer box body made of a steel plate processed into a gate shape, and the front edge of the side plate 10 has a U-shaped groove 10 as in FIG. 3.
The rear edge of the side plate 10 is once folded back toward the inner surface and then bent inward to form an L-shaped piece 10b. 11
12 is a front plate, 12 is a rear plate with a flange piece 12a formed on the metal edge, 13 is a bottom plate, and 14 is an inner box.

Next, a method of assembling the cabinet configured as described above will be explained. First, the front plate 11 is spot-welded to the lower end of the U-shaped groove 10a of the side plate IO, and the bottom plate 13 is spot-welded to the front plate 11. After painting the outer box body 9 in this state,
The inner box 14 is assembled into the U-shaped groove 10&, and the side plate 10
The flange piece 12a of the rear plate 12 is fitted into the inner surface of the L-shaped piece tab on the rear edge. In this way, the polyurethane heat insulating material 15 is injected and foamed into the gap space between the outer box body 9 and the inner box 14, and the cabinet is completed.

In this way, in this invention, the foaming of the polyurethane heat insulating material 15 progresses from the gap space in the direction of arrow A, so that the 7-rank piece 12a of the rear plate 12 is connected to the L-shaped piece 10 of the side plate 10.
A is pressurized and bonded to the side plate 1 with the heat insulating material 15.
0 can be fixed without welding.

〔Effect of the invention〕

As described above, according to the present invention, the flange piece of the rear plate is fitted into the L-shaped piece formed on the rear edge of the side plate, and
Since the rank piece is processed and bonded to the L-shaped piece by the foaming power of the heat insulating material, the rear plate can be fixed without welding as in the conventional method, thereby greatly reducing welding costs. In addition, since the L-shaped pieces of the side panels do not extend outward, there are no edges on the outer surface of the cabinet, and therefore the paint film "
There are no scratches, no need for repainting, and the appearance is improved. Furthermore, the fact that the flange piece of the rear plate is processed into the L-shaped piece of the side plate with heat insulating material means that the gap between the 7-rank piece and the L-shaped piece is closed, and there is no leakage of the heat insulating material to the outside. There is an effect.

[Brief explanation of the drawing]

Figures 1 to 7 show conventional examples. Figure 1 is an external view of the cabinet, Figure 2 is an external view of the outer case, front plate, rear plate, and bottom plate, and Figure 3 is an external view of the cabinet. Figure 2 is the ■-■ line cross-sectional diagram, Figure 4 is the rear view of the cabinet, Figure 5 is the
Figure 6 is a horizontal partial cross-sectional view of the cabinet, Figure 7 is a diagram showing insulation leakage, Figures 8-
FIG. 12 shows an embodiment of the present invention, and FIG. 8 is an external view of each of the outer box, front plate, rear plate, and bottom plate;
Figure 9 is a cross-sectional diagram taken along the line A-A in Figure 8, Figure 10 is an external view of the outer box, inner box, and rear panel, Figure 11 is a horizontal partial cross-sectional view of the cabinet, and Figure 12 is the insulation material. FIG. 12 is a cross-sectional view similar to FIG. 11 showing a foamed state of the material. 9... Outer box body, 10... Side plate, 10a--U-shaped groove, 10b... L-shaped piece, 11... Front plate, 12... Rear plate, 12a... Flange piece, 14...Inner box, 15
...Polyurethane insulation material. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. 102y≦Go1〕≧Ll) Figure 12 120 A I2 Procedural amendment (voluntary) 20 Name of the invention Refrigerator cabinet 3, Person making the amendment Representative Hitoshi Katayama Department 4, Agent 5, Specification subject to amendment Column 6 of Detailed Description of the Invention, page 5, line 7 of the Specification of Contents of Amendment is corrected as rlOaJtl-rlObJ.

Claims (1)

[Claims] In a refrigerator cabinet, an inner box is assembled into an outer box made of a steel plate, and a polyurethane insulation material is injected and foamed into the gap between the inner and outer boxes. Form an L-shaped piece by bending it toward the
A refrigerator cabinet, characterized in that a flange piece of a rear plate is fitted to the inner surface of the shaped piece, and the rear plate is fixed by pressing the flange piece towards one side of the L shape by foaming the polyurethane heat insulating material.