KR0142058B1 - Hinge structure using cam of a refrigerator - Google Patents

Abstract

The present invention relates to a refrigerator door hinge assembly, an object of the present invention, in the door hinge assembly, the cam element of the part in contact with the roller to prevent the wear and noise of the roller due to the friction contact with the cam is a rigid synthetic resin material The cam element of the remaining portion is to provide a cam assembly for a door hinge formed of a metal material.

In order to achieve the above object, in the present invention, a refrigerator using a prefabricated cam including a first cam element having a curved surface formed integrally with the bottom surface of the door and a separate second cam element formed with the bush insertion hole. Provide a door hinge assembly.

Description

Refrigerator door hinge assembly with prefabricated cam

1 is an exploded perspective view of a prefabricated cam according to an embodiment of the present invention mounted on a lower side of a refrigerator door,

Figure 2 is a plan view for showing the interaction of the prefabricated cam according to an embodiment of the present invention fixed to the lower side of the refrigerator door and the roller on the door support member fixed to the refrigerator body.

* Explanation of symbols for main parts of the drawings

10: prefabricated cam 11: the first cam element

11a: contact surface 11b: roller contact surface

12: second cam element 12a: contact surface

12b: Bushing hole 12c: Threaded hole

12d: set screw 13: roller

13a: rotary shaft 13b: spring

14: bush 14a: hinge shaft insertion hole

15: hinge shaft 20: door

20a: door bottom 21: door support member

The present invention relates to a refrigerator door hinge assembly, in particular a refrigerator door hinge assembly in which a cam used for the hinge assembly is prefabricated.

According to the specification named refrigerator door hinge assembly patented by the present applicant, the refrigerator door can be opened at any angle desired by the user, and stepwise opening so that the hinge assembly is not impacted even when the door is suddenly opened. When the door is closed, it is also possible to close the door more than a certain angle, after which a configuration that can be completely closed by the force of the spring has been proposed.

The hinge assembly employs an integrated cam configured to control the step-by-step opening and automatic closing of the door by close contact with the roller and the roller capable of reciprocating and rotating motion. However, since the integrated cam is made of metal, it may not only wear the roller of the synthetic resin material upon contact with the roller but also generate noise at the contact surface with the roller.

Accordingly, an object of the present invention, in the refrigerator door hinge assembly as described above, the cam element of the part in contact with the roller is formed of a rigid synthetic resin material in order to prevent wear and noise of the roller due to the frictional contact with the cam, The remaining cam element provides a cam assembly for a door hinge formed of a metal material.

In order to achieve the above object, in the present invention, the refrigerator having a bush insertion hole formed so that the bush for inserting the hinge axis of the door can penetrate, and the curved surface formed in the outer peripheral portion around the bush insertion hole A cam fixed to the lower side of the door; A door support member having a hinge shaft extending vertically upwardly passing through the center of the bush insertion hole on one side thereof and fixed to the refrigerator main body; And a roller having a rotation shaft formed in parallel with the hinge axis of the door support member, the roller being capable of rotating in conjunction with the rotational movement of the cam in close contact with the outer circumferential surface of the cam by an elastic force of a spring. A prefabricated cam door hinge assembly, wherein the cam includes a first cam element having a curved curved surface integrally formed with the bottom surface of the door and a separate second cam element having the bush insertion hole formed therein. It provides a refrigerator door hinge assembly using.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention.

As shown in FIG. 1, the prefabricated cam 10 according to one embodiment of the invention comprises a first cam element 11 and a second cam element 12.

The first cam element 11 is formed integrally with the bottom surface 20a of the door 20, which is a synthetic resin material, and on one side thereof, the curved surface 11b of which the rollers capable of the above-mentioned reciprocating and rotating motions are in close contact with each other. ) Is formed, and on the other side thereof, an L-shaped contact surface 11a which is tightly fixed to the contact surface 12a of the second cam element 12 is formed.

The second cam element 12 has a bush 14 insertion hole 12b formed at the center thereof, and a contact surface 12a contacting the L-shaped contact surface 11a of the first cam element 11 on the outer circumferential surface thereof. ) Is formed. In addition, a pair of screw holes 12c are formed between the bush insertion hole 12b and the contact surface 12a to fix the first cam element 11 to the bottom surface 20a of the door. In the drawing, reference numeral 12d denotes a set screw 12d screwed into the screw hole 12c of the second cam element 12, and 14a denotes a bush 14 into which the hinge shaft 15 can be inserted. The hinge shaft insertion hole formed in the center is shown.

FIG. 2 is a plan view illustrating the interaction between the prefabricated cam 10 fixed to the bottom surface 20a of the refrigerator door 20 and the roller 13 on the door support member 21 fixed to the refrigerator body. Shown by an imaginary line indicates a state in which the refrigerator door 20 is closed, and shown by a solid line indicates a state where the door 20 is slightly open. That is, the cam assembly 10 or the refrigerator door 20 may be moved to the closed position by rotating in the direction of the arrow of the drawing by the roller 13 pressed by the spring 13b. At this time, since the first cam element 11 having the curved surface 11b of the corrugated material is a rigid synthetic resin material, the first cam element 11 may be smoothly contacted with the roller 13 without damaging the roller 13. Noise caused by the contact is also not generated. In addition, since the material of the second cam element 12 is made of metal, the second cam element 12 has sufficient strength to enable hinge engagement with the door 20.

The above is a description of one embodiment of the present invention, and the present invention can be variously modified within the scope of the gist structure.

Claims (1)

A curved wave formed in the outer circumference of the bush insertion hole 14a and the bush insertion hole 14a formed so that the bush 14 for inserting the hinge shaft 15 of the door 20 can pass therethrough. A cam 10 provided with a surface 11b and fixed to a lower surface of the refrigerator door 20; A door support member (21) having a hinge shaft (15) extending vertically upwardly passing through the center of the bush insertion hole (14a) on one side thereof and fixed to the refrigerator body; And The cam has a rotating shaft 13a formed parallel to the hinge shaft 15 of the door support member 21, and is in close contact with the outer peripheral surface of the cam 10 by the elastic force of the spring 13b. In the refrigerator door hinge assembly comprising a roller (13) capable of rotational movement in conjunction with the rotational movement of (10), The first cam element 11 and the bush inserting hole 14a formed with the cam 10 having a curved curved surface 11b integrally formed with the bottom surface 20a of the door 20 are formed. Refrigerator door hinge assembly using a prefabricated cam 10, characterized in that it comprises a two cam element (12).