JPS63233286A - Manufacture of 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] Industrial applications The present invention relates to manufacturing a heat insulating box.

Prior Art A conventional example will be explained with reference to FIGS. 3 and 4. In the figure 1
2 is a refrigerator main body, 2 is an outer box, 3 is an inner box vacuum-formed from plastic resin, and 4 is a heat insulating material filled between the outer box 2 and the inner box 3. Reference numeral 5 denotes a rail that is attached to the side surface 2t of the inner box 3 before the insulation material 4 is filled. 6 is the outer box 2 and the inner box 3
This jig is used to prevent deformation of the inner box when filling the space with the heat insulating material 4, and the rail 5 portion is cut out.

Problems to be Solved by the Invention However, in such a configuration of the refrigerator main body 1, it is necessary to cut out the rail 5 portion of the jig 6 for preventing deformation of the inner box.
Since the rail 5 attached to the inner box 3 does not contact the inner box 3 at the back, when the insulation material 4 is filled, the inner box 3 may be deformed due to the heat and foaming pressure of the insulation material 4, which is a further problem. It had On the other hand, in order to prevent deformation, a core made of a separate piece was used to fill the space between the jig and the jig, which resulted in poor productivity, or because the movable parts were buried in the jig described in 11J. However, not only was the cost high, but the jig had the disadvantage of being short-lived.

The present invention aims to solve these conventional problems, and aims to prevent the inner box from deforming when filled with a heat insulating material.

Go to Means S to Solve the Problems-7 In order to achieve the above object, the present invention deforms the inner box by making the width of the chamfered surface formed on the inner corner of the inner shell larger than the width of the receiving member such as the rail. It is configured so that the prevention jig comes into contact with it.

Effect The present invention has the above-described structure, and even when the foaming pressure of the heat insulating material is applied, the chamfer formed on the inner box greatly improves the deformation strength of the inner box, and the chamfered shape greatly improves the flowability of the filler at the corners. By doing so, the effect of dispersing the foaming pressure is brought out, and since the jig for preventing deformation of the inner box is in contact with the chamfered surface, the refrigerator body can be manufactured without deforming the inner box.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. In addition, the same reference numerals are attached to the same configuration as the conventional one, detailed explanation thereof will be omitted, and only the different parts will be described. 7 is an inner box vacuum-formed from plastic resin, and a chamfer 57a is formed at the inner corner. Reference numeral 8 denotes a jig for preventing deformation of the inner box used when filling the space between the outer box 2 and the inner box 7 with the heat insulating material 4, and has a chamfer I) 8a at the corner of the tip.

In such a configuration, the chamfer p7 at the inner corner of the inner box 7
A chamfer p8a provided on the inner box deformation prevention jig 8 comes into contact with a. Therefore, deformation of the heat insulating material due to foaming pressure can be minimized.

Effects of the Invention From the above explanation, it is clear that by bringing the jig for preventing deformation of the inner box into contact with the chamfered surface formed on the inner corner of the inner box of the present invention, insulation can be achieved between the outer box and the inner box. When filling with material, the inner box is prevented from deforming due to the heat and foaming pressure of the heat insulating material, making it possible to manufacture a refrigerator with a clean appearance.

In addition, productivity decreases due to the use of cores in separate pieces, etc., or high jig costs for embedding movable cores,
This eliminates the need for maintenance and can be handled using inexpensive jigs without reducing productivity.

[Brief explanation of drawings]

FIG. 1 is an enlarged cross-sectional view of essential parts of a refrigerator showing an embodiment of the present invention, FIG. 2 is a front view of the refrigerator shown in FIG. 1, 5--FIG. 3 is a front view of a refrigerator showing a conventional example, FIG. 4 is an enlarged cross-sectional view of the main part of FIG. 3. 2...Outer box, 4...Insulation material, 5...
...Rail, 7...Inner box, 7a...Chamfer, 8...Inner box deformation prevention jig. Name of agent: Patent attorney Toshio Nakao and one other person? −
Outer box 4-1k Heat 1 year old 5-Rail, - Inner case - Chamfered 8- Inner box deformation prevention jig Figure 1? -Outside Box 5-Rail Figure 3

Claims (1)

[Claims] The refrigerator body is formed by an outer box, an inner box, and a heat insulating material filled between the two boxes, and the width of a receiving member such as a rail that is attached to the inner surface of the inner box that is fixed before filling. A method for manufacturing a refrigerator, characterized in that the width of a chamfer formed on the inner corner of the inner box is increased, and a jig for preventing deformation of the inner box is brought into contact with the chamfer.