JPH0522787Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is based on installing a partition wall that forms an air passage in the partition that divides two rooms, and using in-situ foaming between the inner box and the outer box. This invention particularly relates to the shape of the contact surfaces between two partition walls in a refrigerator filled with polyurethane.

[Conventional technology]

4 to 7 are a perspective view, a V-V sectional view, a - sectional view, and a perspective view of a partition wall of a conventional refrigerator shown in, for example, Japanese Utility Model Publication No. 59-14699.
In the figure, 1 is the refrigerator body, an inner box 2 and an outer box 3.
and a polyurethane foam 4 filled between the boxes 2 and 3. The inner box 2 has a freezer compartment 5, a refrigerator compartment 6, and an inner partition 7 formed by an upper plate 7a and a lower plate 7b between both chambers 5 and 6, which are integrally molded from synthetic resin. A suction window 8 opened to the freezer compartment 5 side is also formed in the plate 7a (ie, the bottom plate of the freezer compartment 5). Reference numeral 9 denotes a partition wall inserted and fixed inside the partition 7, which is divided into two into an upper insulation material 9a and a lower insulation material 9b to form a cold air circulation duct 10 for the freezer compartment 5 communicating with the suction window 8 inside. The left, right and rear side surfaces 9c of the upper heat insulating material 9a are brought into contact with and fitted into the heat insulating flange 9d of the lower heat insulating material 9b.

Next, the operation will be explained. To assemble the refrigerator body 1, connect the side surface 9c of the upper insulating material 9a to the lower insulating material 9b.
This inner partition wall 9 is fitted into the heat insulating flange 9d of
is inserted into the partition 7 of the inner box 2, the inner box 2 is fitted into the outer box 3, a foaming jig (not shown) is attached, and foamed polyurethane 4 is filled. Therefore, the heat insulating flange 9d is deformed so as to protrude inward due to the filling pressure of the foamed polyurethane 4, and at the same time, the upper heat insulating material 9a fitted therein may also be deformed.

In addition, in the assembled product, if heavy food (not shown) is placed on the top plate 7a of the partition 7, which is the bottom plate of the freezer compartment 5, the partition 7 and the partition wall 9 of the partition 7 will bend due to the weight. Upper insulation material 9a divided into two parts
When the side surface 9c, which is the fitting contact surface of the lower insulation material 9b, and the inside of the insulation flange 9d are misaligned and rubbed against each other, and the contact surface becomes resin and forms a hard layer, it generates a squeaking sound.

[The problem that the idea attempts to solve]

Conventional refrigerator partition walls are constructed as described above, so if the surface of the partition wall becomes resinous and forms a hard layer due to variations in the partition wall products, placing heavy food on the floorboard of the freezer compartment may There was a problem in that the fitting contact surfaces of the insulation material and the lower insulation material rubbed against each other, producing a squeaking sound, which caused discomfort to the user. In addition, the filling pressure of polyurethane foam deforms the lower insulation material, and at the same time deforms the upper insulation material, creating a gap in the cold air circulation duct, causing problems such as leakage of cold air.

This idea was made to solve the problems mentioned above, and even if there are variations in the partition walls or when heavy food is placed on the floorboard of the freezer room, the upper and lower insulation materials can be easily connected. The purpose is to minimize the squeaking noise caused by rubbing of contact surfaces, and to prevent the upper insulation material of the partition wall from deforming due to the filling pressure of polyurethane foam, thereby creating a refrigerator partition wall that does not cause cold air leakage. shall be.

[Means to solve the problem]

In the partition wall of the refrigerator according to this invention, one side of the contacting side of the upper and lower insulation materials is formed into an uneven shape, and both ends of one side of the uneven shape are in contact with each other, while the center part is not in contact with each other. That is.

[Effect]

In the refrigerator according to this invention, the uneven end portions provided on one of the upper insulation material and the lower insulation material contact the other with a minimum area, thereby minimizing the squeak sound. In addition, by providing a suitable gap by leaving the central portion of the uneven shape non-contacting, deformation of the lower heat insulating material due to the filling pressure of polyurethane foam is absorbed and deformation of the upper heat insulating material is prevented.

[Example of idea]

An embodiment of this invention will be described below with reference to the drawings. 1 to 3 show a partition wall of a refrigerator according to an embodiment of the invention; FIG. They are a perspective view, a top view, and an operation explanatory diagram. In the figure, 1 to 8 are exactly the same as conventional refrigerators. Reference numeral 11 denotes a partition wall that is divided into two parts to form the cold air circulation duct 10, and 12 is a lower heat insulating material of this partition wall, forming a heat insulating flange 12a. Reference numeral 13 designates the upper insulating material of the partition wall 11, which has an uneven shape 1 that continues on the left, right and rear sides.
3a. 13b and 13c are both ends and the center of this uneven shape 13a;
b is formed to be higher than the central portion 13c by an appropriate dimension and is brought into contact with the inside of the heat insulating flange 12a of the lower heat insulating material 12, and the central portion 13c is fitted with an appropriate gap provided in the non-abutting state.

Next, the operation will be explained. To assemble the refrigerator main body 1, both ends 13b of the upper insulating material 13 are fitted into the insulating flanges 12a of the lower insulating material 12, and the inner partition wall 11, which is designed to prevent it from falling apart in consideration of ease of assembly, is inserted into the inner box 2. 7 and insert it into this inner box 2.
is fitted into the outer box 3, a foaming jig (not shown) is attached, and foamed polyurethane 4 is filled. Then, due to the filling pressure of the foamed polyurethane 4, the heat insulating flange 1 is formed as shown by dotted lines in FIG.
2a may be deformed so as to protrude inward, but since the heat insulating flange 12a and the central portion 13c are provided with an appropriate gap, they only come into contact with each other under low pressure, and the upper heat insulating material 13 does not deform. .

In addition, the upper plate 7 of the partition 7 which is the bottom plate of the freezer compartment 5
When heavy food (not shown) is placed on a, the middle partition 7 and the partition wall 11 inside the middle partition 7 bend due to the weight, and the fitting contact surface between the upper insulation material 13 and the lower insulation material 12, which are divided into two parts, is bent. The two end portions 13b and the center portion 13c due to the deformation of the heat insulating flange 12a shift and rub against each other at the contact points, but since the contact area is small, the squeaking noise is small and difficult to generate.

In the above embodiment, the uneven shape 13a is provided on the side surface of the upper heat insulating material 13, but the uneven shape 13a may be provided on the heat insulating flange 12a of the lower heat insulating material 12.

[Effect of idea]

As described above, according to this invention, the contact area of the upper and lower insulating materials of the partition wall is brought into contact with both ends of the uneven shape, and the contact area is made as small as possible. By making the upper and lower insulation materials non-contact and providing an appropriate gap, it is possible to minimize the squeak noise caused by the rubbing of the upper insulation material and the lower insulation material. This has the effect of preventing deformation of the cold air circulation duct and ensuring that there are no problems such as cold air leakage from the cold air circulation duct.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a partition wall of a refrigerator according to an embodiment of the invention, FIG. 2 is a top view of FIG. 1,
Fig. 3 is an explanatory diagram of deformation behavior due to the filling pressure of polyurethane foam, showing a part of the partition wall of a refrigerator according to an embodiment of this invention, Fig. 4 is a perspective view showing a conventional refrigerator, and Fig. 5 is a 6 is a cross-sectional view taken along the line V-V of FIG. 4,
FIG. 7 is a perspective view showing a partition wall of a conventional refrigerator. 11 is a partition wall, 12 is a lower insulation material, 13 is an upper insulation material, 13a is an uneven shape, 13b is both ends, 13
c is the central part. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] The refrigerator body consists of an outer box and an inner box made of synthetic resin, and this inner box is divided into a freezer compartment and a refrigerator compartment at the top and bottom by a partition, and an upper insulation material and a lower insulation material are formed within the partition. In a refrigerator in which a partition wall with a cold air circulation duct is provided and a cavity formed by the outer box and the inner box is filled with polyurethane foam, which side of the upper insulation material and the lower insulation material are in contact with each other. 1. A partition wall for a refrigerator, characterized in that one side of the partition wall is formed into a plurality of continuous uneven shapes, both ends of one side of the uneven shape are in contact with each other, and the center part is not in contact with each other.