JPS6144145Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the casing structure of a refrigerator, and particularly provides a structure that simplifies the attachment of a heat dissipation pipe and a back plate.

In conventional refrigerators in which the heat dissipation pipes constituting the condenser are housed in the outer box, the heat dissipation pipes are arranged in a meandering manner on the inner surface of the back plate forming the outer box, and are fixed with mounting plates. Since the back plate is attached to the side plates forming the outer box by spot welding or screwing, the assembly itself is complicated and expensive.

The present invention is constructed in order to solve the problems caused by the above-mentioned conventional example.The present invention will be explained below with reference to an embodiment shown in the figure. 1 is a casing of a refrigerator, an outer box 2, Inner box 3 and between these two boxes 2, 3
and a heat insulating material 4 filled in between. Reference numeral 5 denotes a side plate forming the outer box 2. A front flange 51 is formed at the front end of the side plate 5, and the cross-sectional shape is approximately U for holding the flange 31 of the inner box 3 continuously therein. An inner box holding part 52 is formed which is bent into a letter shape, and its rear end has a substantially U-shaped cross section for holding a heat dissipation pipe 6 that constitutes a condenser inside, and its depth is a heat dissipation pipe. The pipe holding part 53 is bent to be larger than the diameter of the pipe, and the cross-sectional shape for holding a back plate (to be described later) continuously inside the pipe holding part 53 is approximately U-shaped. Therefore, the back plate holding portion 54 is bent to have a wider width.
is formed. Reference numeral 7 denotes a back plate forming the outer box 2 attached to the side plate 5, and a flange 71 bent inward at right angles for fitting into the back plate holding portion 54 is formed at the side end thereof.
This flange 71 is formed with a hook 72 for locking the flange 71 to the back plate holding portion 54 .

In the above configuration, the assembly process will be explained next. First, the flange 71 of the back plate 7 is fitted into the back plate holding portion 54 of the side plate 5 from the entrance thereof, and the hook 72 formed on the flange 71 is used to attach the back plate. With the inner box 3 locked in the face plate holding part 54, the back plate 7 mounted on the side plate 5, and the heat dissipation pipe 6 fitted and held in the pipe holding part 53 of the side plate 5, insert the inner box 3 through the opening of the outer box 2. Then, the flange 31 is fitted and held in the inner box holding portion 52 of the side plate 5, and then a heat insulating material 4 is filled between the outer box 2 and the inner box 3 to form a heat insulating casing.

As described above, the refrigerator casing of the present invention has a substantially U-shaped cross-section for holding the heat radiation pipe inside the rear end of the side plate forming the outer box, and its depth is greater than the diameter of the heat radiation pipe. The pipe holding part is bent to increase in size, and the cross-sectional shape for holding the back plate on the inside of the pipe holding part is continuous and U-shaped, and the width becomes wider as you go deeper from the entrance. A bent back plate holding portion is formed, and a flange bent inwardly at right angles for fitting into the back plate holding portion is formed at a side end of the back plate forming an outer box attached to the side plate. Therefore, the side plate and the back plate can be connected by simply inserting the flange formed at the side end of the back plate into the back plate holding part formed at the rear end of the side plate from the entrance thereof, and can be done by spot welding or by conventional spot welding. The assembly itself can be simplified without the need for screws, etc., and the heat dissipation pipe can be assembled by simply inserting the heat dissipation pipe into the pipe holding part formed on the side plate, which eliminates the need for conventional heat dissipation pipes. No separate mounting member for fixing to the face plate is required, the number of parts can be reduced and the assembly itself can be simplified, and costs can be significantly reduced compared to the conventional example.

In addition, the inside of the heat dissipation pipe held by the pipe holding part is thermally isolated by three walls: the back plate holding part and the flange of the back plate fitted into this. There is also less heat leakage into the inner box, and the thickness of the heat insulating material can be made thinner than in the conventional case, which can also be expected.

[Brief explanation of the drawing]

The drawing is a plan cross-sectional view of essential parts of an embodiment of the refrigerator according to the present invention. In the figure, 1 is a housing, 2 is an outer box, 3 is an inner box, 4 is a heat insulator, 5 is a side plate, 51 is a front flange, 52 is an inner box holding part, 53 is a pipe holding part, 54 is a back plate holding part , 6 is a heat dissipation pipe, 7 is a back plate, 71 is a flange, and 72 is a locking claw.

Claims (1)

[Scope of utility model registration request] In a refrigerator whose box body is composed of an outer box, an inner box, and a heat insulating material filled between these two boxes, the front flange at the front end of the side plate forming the outer box has the An inner box holding part is formed that is bent so that the cross-sectional shape is approximately U-shaped for holding the flange of the inner box, and at the rear end,
A pipe holding part having a substantially U-shaped cross section for holding the heat radiation pipe inside thereof, and bent so that the depth thereof is larger than the diameter of the heat radiation pipe;
Continuing from this, there is a back plate holding part that has a substantially U-shaped cross section and is bent so that the width becomes wider as it goes deeper from the entrance. The refrigerator is further characterized in that a flange is formed at a side end of the back plate forming the outer box, and is bent inward at a right angle for fitting into the back plate holding portion.