JPS5815577Y2 - Doors of refrigerators, etc. - Google Patents

Description

[Detailed Description of the Invention] The present invention involves inserting a cylindrical bushing having a flange into an insertion hole formed in the peripheral side of the door body, and providing a pivot for pivotally supporting the door body to the bushing. This invention relates to an improvement in the door of a refrigerator, etc., which has a shaft inserted through it.

Conventionally, this type of door has a structure in which a cylindrical bushing is inserted through a circular insertion hole formed in the rectangular box-shaped door body, so the bushing is not able to rotate within the insertion hole. It was showing.

Therefore, when the door body is rotated, the bushing rotates relative to it within the insertion hole, causing damage to the paint film on the inner surface of the insertion hole, which causes rust on the inner surface of the insertion hole. There was a problem in that it was more likely to occur.

Furthermore, in order to solve the above-mentioned problems, there have been conventionally provided configurations in which the insertion hole is formed in a rectangular shape and the bush is formed in a rectangular cylindrical shape to prevent rotation. This configuration has the disadvantage that the strength of the door body at the four corners of the insertion hole is weakened because the insertion hole is formed by countersink processing, and there is a risk that the door body may crack from the four corners. .

The present invention was developed in view of the above circumstances, and its purpose is to prevent the bush from rotating within the insertion hole by preventing the bush from rotating without reducing the strength around the insertion hole in the door body. To provide a door for a refrigerator, etc., which is effective in preventing rust from occurring on the inner surface of the insertion hole due to damage to the paint film on the inner surface of the insertion hole due to movement.

An embodiment in which the present invention is applied to a refrigerator door will be described below with reference to the drawings.

1 is a door for, for example, a freezer compartment A according to the present invention, which has a structure in which a back plate is attached to the back of a rectangular box-shaped door body 2, and the inside is filled with a heat insulating material (both not shown). .

Reference numeral 3 designates an oval-shaped insertion hole formed in a portion of the circumferential side portion 2a of the door body 2 toward the right in FIG.

Reference numeral 4 denotes a bottomed cylindrical bushing whose cross-sectional outline is formed into an oval shape that matches the insertion hole 3, and a circular shaft support hole 5 is formed inside, and the lower end thereof is an insertion tip. The portion 6 is formed into a convex curved shape, and a circular flange portion 7 having a reinforcing ridge 7a at the upper end portion is integrally formed.

The bush 4 is then fitted into the insertion hole 3 through its insertion tip 6, and a hinge fitting provided on the refrigerator body B (not shown) is inserted into the shaft support hole 5 of the bush 4. 8 is inserted, and the door body 2 rotatably supports the refrigerator body B via the bush 4 and the pivot shaft 9.

According to this embodiment configured as described above, since the outer cross-sectional shape of the bushing 4 and the shape of the insertion hole 3 are formed into an oval shape, the bushing 4 can be attached to the insertion hole 3 in a non-rotating state. As a result, the coating film on the inner surface of the insertion hole 7L3 is not damaged as in the conventional case, and rust can be effectively prevented from forming on the inner surface of the insertion hole 3.

In addition, since the insertion hole 3 has an oval shape, the strength around the insertion hole does not become weak unlike the conventional rectangular insertion hole, which is useful in practice.

Moreover, in this embodiment, since the insertion tip 6 of the bushing 4 is formed in a convexly curved shape, there are advantages as described below when automating the fitting and mounting of the bushing 4 into the insertion hole 3 during assembly.

That is, as shown in FIG. 4, the bushing 4 is supported by a chuck member 10 for automatic assembly that is loosely inserted into the shaft support hole 5, and the bushing 4 is moved into the insertion hole 3 by moving the chuck member 10. Even if the longitudinal direction of the insertion hole 3 and the longitudinal direction of the cross-sectional outline of the bushing 4 are misaligned, the insertion tip 6 of the bushing 4 will not come into contact with the periphery of the insertion hole 3. The bushing 4 is rotated in the direction shown by the arrow in the figure while the bushing 4 is rotated so that the long diameter directions are aligned with each other.As a result, the bushing 4 can be easily positioned, and the insertion hole 3 of the bushing 4 The installation work can be easily automated.

According to the present invention, as is clear from the above explanation, it is possible to prevent the bushing from rotating without reducing the strength around the insertion hole of the door body, thereby preventing rotation of the bushing within the insertion hole. This can prevent the occurrence of rust on the inner surface of the insertion hole due to damage to the coating film on the inner surface of the insertion hole.

[Brief explanation of drawings]

The drawing shows one embodiment in which the present invention is applied to a refrigerator.
The figure is an exploded perspective view, FIGS. 2 and 3 are side and bottom views of the husband bushing, and FIG. 4 is a perspective view of essential parts for explaining the assembly work. In the figure, 1 is a door, 2 is a door body, 3 is an insertion hole, 4 is a bushing, 6 is an insertion tip, 7 is a collar, and 9 is a pivot shaft.

Claims (1)

[Scope of utility model registration request] A cylindrical bushing having a flange is inserted into an insertion hole formed in the peripheral side of the door body, and a pivot shaft for pivotally supporting the door body is inserted through the bushing, The insertion hole is formed in an oval shape, the cross-sectional outline of the bushing is formed in an oval shape that matches the insertion hole, and the insertion tip of the bushing is formed in a convex curved shape. Doors of refrigerators, etc.