KR100635448B1 - Device for door hinge of the kimchi freeger - Google Patents

Abstract

A hinge device for a door of a Kimchi refrigerator is provided to prevent the parts from being damaged and worn and improve the productivity according to the simple composition of the rotary cam and the torsion spring. A hinge device for a door of a Kimchi refrigerator comprises a housing member(10) fixed at the refrigerator body and installed with a cover(12) detachably combined at both ends; a pair of shafts(20) mounted in the housing member; a door connection member(30) combined at one side of the shaft and fixed at the refrigerator door; a pair of rotary cam(40) whose one side surface is contacted in the housing member and other side surface forms a guide unit whose one side surface is sloped with a predetermined interval at the outer peripheral surface with a predetermined height, wherein one side of the shaft is inserted and combined by a fixing unit; a pair of linear slide cams(50) tooth engaged with the guide unit of the rotary cam, projected with a sliding unit at the inner peripheral surface of one side with a predetermined height, and elastically supported at a spring(60) mounted at the other side according to the rotation of the rotary cam; a pair of support members(70) each mounted at the other side of the spring to support the spring elastically supported by the movement of the slide cam; and a torsion spring(80) mounted at one side of more than one of the support members, wherein both sides are fixed at the support and door connection members.

Description

Hinge device for Kimchi refrigerator door {DEVICE FOR DOOR HINGE OF THE KIMCHI FREEGER}

1 is a cross-sectional view of the hinge device for a kimchi refrigerator door according to the present invention,

Figure 2 is an exploded cross-sectional view of the hinge device for a kimchi refrigerator door according to the present invention,

3 is a perspective view of a rotating cam according to the present invention;

4 is a perspective view of a slide cam according to the present invention;

Figure 5a is a coupled state of the rotary cam and the slide cam in the door open state according to the present invention,

Figure 5b is a coupled state of the rotary cam and the slide cam of the door closed state according to the present invention,

6A is a state diagram of a torsion spring in a state in which a door according to the present invention is opened;

Figure 6b is a state diagram of a torsion spring of the door closed state according to the present invention,

7 is a schematic view showing the operation of the door according to the present invention;

8 is a state of use of the hinge device for a kimchi refrigerator door according to the present invention,

9 is a cross-sectional view showing a conventional hinge device.

<Description of Symbols for Main Parts of Drawings>

10: housing member 12: cover

20: shaft 30: door connecting member

32: fixed groove 40: rotating cam

42: guide portion 43: guide surface

50: slide cam 52: the sliding portion

53: sliding surface 54, 74: support part

60: spring 70: support member

72: insertion groove 80: torsion spring

90: push pin

The present invention relates to a kimchi refrigerator door hinge device, and more particularly, to maintain a stable operating state in all sections when the door is opened, the impact on the device by controlling the door to be lowered gradually in a certain section during the closing operation It also relates to a hinge device for the Kimchi refrigerator door that can minimize the risk and prevent the safety accidents occurring during sudden descent.

In general, doors for electronic appliances such as cupboard doors, kimchi refrigerators, and washing machines of kitchen furniture generally use up-down swing doors that open up and down while rotating from the hinge axis.

When opening and closing the bottom swing door, the door is opened and closed by rotating the hinge device mounted at the end of the door by external pressure. However, most hinge devices use the tension of the simple spring to be mounted on the door frame. When a lot of force is applied, the wear of the connection part and the product itself are damaged.

In addition, when the door is opened and closed, the door does not stop at the desired position, and the door instantly descends and is easily opened, which gives users anxiety and maximizes cold air leakage as the door is automatically opened close to the upright automatically when the storage is taken out. As a result, a hinge device is required to avoid the danger of free fall due to stable operation while maintaining a stop state in all sections during opening.

Figure 9 relates to a hinge device that has been pre- filed by the present inventor, the application number 10-2005-0004023 (January 17, 2008, the name of the invention: free stop and slow down hinge device), the inner space is formed in the longitudinal direction And a housing 100 having a cover 102 at both ends, a door side cam member 120 integrally formed at a shaft 122 installed at one side of the housing 100 and fixed to the door side, The main body side cam member 130 and the main body side cam member 130 are installed to correspond to the door side cam member 120 and linearly moved by the rotational movement of the door side cam member 120. A free stop including a pressing member 140; The fixed cam 150 provided in the housing 100 and the rotating slide cam 160 and the door side cam member 120 which are provided to face the fixed cam 150 and rotate simultaneously with the linear cam are rotated. It has been proposed a hinge device that consists of a slow down portion consisting of a rod 170 connecting the rotating slide cam 160 to be integrally rotated when the door is opened and closed.

The hinge device maintains the door's open state stably at all points in the free stop area, which is an open area, and minimizes the impact on the device by preventing sudden free fall of the door in the slow down area, the remaining area. And improve the usability.

However, the above technique prevents sudden free fall of the door by the tension of the spring, which is a pressing member, but the freestop portion and the slowdown portion are formed to face each other and are subjected to pressure at the same time, resulting in damage and wear of parts. There was this.

The present invention has been made to solve the above problems, an object of the present invention is to maintain a stable open state in all sections by the rotary cam when the door is opened, according to the operation of the torsion spring in a certain section during the closing operation By controlling the door to be slowly lowered, it significantly reduces the impact and noise generated during the lowering to improve the operation reliability and provides a hinge device for the Kimchi refrigerator door that can prevent safety accidents due to sudden lowering. have.

Another object of the present invention is the configuration of the rotating cam and the torsion spring of the hinge device is very simple, not only can be easily installed, but also can increase the productivity, and reduce the damage and wear rate of parts to reduce maintenance costs To provide a kimchi refrigerator door hinge device that can be.

The present invention provides a housing member having a cover fixed to the refrigerator body and detachably coupled to both ends, a pair of shafts provided inside the housing member, and a door coupled to one side of the shaft and fixed to the refrigerator door. In the hinge device for a kimchi refrigerator door consisting of a connection member, the one side is provided in contact with the inside of the housing member, the other side facing each other is formed with a predetermined height inclined one side at a predetermined interval on the outer peripheral surface, A pair of rotary cams, one side of which is inserted into the shaft and fixedly coupled to the fixing unit; A pair of slide cams protruding at a predetermined height from one side inner circumferential surface of the rotating cam so as to be engaged with the guide portion of the rotating cam, and being supported by a spring provided on the other side of the rotating cam to linearly move; A pair of support members each provided on the other side of the spring to support the spring carried by the slide cam; It is provided on one side of any one or more of the support member, characterized in that both sides are configured to include a torsion spring fixed to the support member and the door connection member.

Here, an insertion groove is formed on one side of the support member to insert one side of the torsion spring, and a fixing groove is formed on one side of the door connection member facing the support member to insert the other side of the torsion spring. It is preferable.

In this case, the fixing means is preferably a fixing pin penetrating the shaft and the rotary cam.

On the other hand, the one side of the slide cam and the support member facing each other preferably close to the support shaft is further formed on both sides of the spring is supported.

Hereinafter, with reference to the accompanying drawings will be described in detail the hinge device for a kimchi refrigerator door of the present invention.

1 is a cross-sectional view of the hinge device for a kimchi refrigerator door according to the present invention, Figure 2 is an exploded cross-sectional view of the hinge device for a kimchi refrigerator door according to the present invention, Figure 3 is a perspective view of a rotating cam according to the present invention, Figure 4 5 is a perspective view of a slide cam according to the present invention, Figure 5a is a state diagram of the combination of the rotary cam and the slide cam in the door open state according to the present invention, Figure 5b is a rotating cam and the door in the closed state according to the present invention 6A is a state diagram of a torsion spring in a state in which the door is open according to the present invention, FIG. 6B is a state diagram of a torsion spring in a state in which the door is closed in accordance with the present invention, and FIG. Figure 8 is a schematic view showing the operation of the door according to Figure 8 is a state diagram of the hinge device for the kimchi refrigerator door according to the present invention.

As shown in the figure, the hinge device for a kimchi refrigerator door according to the present invention is a housing member 10 having a cover 12 is fixed to the refrigerator body and detachably coupled to both ends, and the housing member ( The shaft 20 is provided in the interior of the 10, and one side of the shaft 20 is inserted is composed of a door connecting member 30 is coupled to the fixing pin 90 and fixed to the refrigerator door.

One side of the housing member 10 is provided to be in contact with each other, and the other side surfaces opposed to each other are guide parts 42 formed at a predetermined height so as to be inclined at regular intervals on the outer circumferential surface, and one side of the shaft 20 is inserted. And a pair of rotary cams 40 fixedly coupled to each other by a fixing means, and the sliding portion 52 protrudes to a certain height on one inner circumferential surface so that the guide portion 42 of the rotary cam 40 is inserted into and engaged with each other. As the cam 40 rotates, a pair of slide cams 50 which are supported by the spring 60 provided on the other side and linearly move are provided.

In addition, a pair of support members 70 are provided on the other side of the springs 60 to support the springs 60 which are supported by movement of the slide cam 50, and any one of the support members 70 may be provided. One side is provided with a torsion spring 80, both sides are fixed to the support member 70 and the door connection member 30.

Here, the rotating cam 40 is penetrated by the fixing pin 90 to the shaft 20 to be rotated integrally with the shaft 20 to control the rotation of the refrigerator door to open the refrigerator door. To keep it stable.

In this case, when the refrigerator door is opened, the slide cam 50 of the slide cam 50 engaged with the guide portion 42 of the rotary cam 40 gradually slides under pressure. The housing member 10 is moved to one side, and in the state where the refrigerator door is completely open, the tip portions of the guide part 42 and the sliding part 52 are connected to correspond to each other.

That is, the guide surface 43 is formed to be inclined on one side of the guide portion 42 and the sliding surface 53 formed on one side of the sliding portion 52 is sliding while interfering with each other, the door is completely open In the guide surface 43 and the sliding surface 53 is an extension line of the guide portion 42 and the sliding portion 52 is located at the leading end of each other.

On the other hand, an insertion groove 72 is formed on one side of the support member 70 so that one side of the torsion spring 80 is inserted, and one of the door connection members 30 facing the support member 70. It is preferable that the fixing groove 32 is formed on the side so that the other side of the torsion spring 80 is inserted.

Therefore, by inserting and fixing both sides of the torsion spring 80 to the insertion groove 72 and the fixing groove 32 to prevent the flow of the torsion spring 80 and at the same time the torsion spring 80 in accordance with opening and closing of the refrigerator door. ) Will be compressed and decompressed. That is, when the refrigerator door is opened, the compression of the torsion spring 80 is gradually released according to the opening angle, and the compression force of the torsion spring 80 reaches zero when the refrigerator door is completely opened. On the contrary, when the refrigerator door is closed, the torsion spring 80 gradually compresses and the torsion spring 80 reaches its peak when the refrigerator door is completely closed.

At this time, the torsion spring 80 is provided between the support member 70 and the door connection member 30, may be provided on each side as well as one side of the housing member 10.

The support member 70 is a polygon having a predetermined thickness through which a central portion thereof is inserted, and is inserted in close contact with the inside of the housing member 10 so that the support member 70 does not flow when the refrigerator door is rotated and can withstand the tension of the spring 60. It is desirable to have durability enough.

In addition, one side of the slide cam 50 and the support member 70 which are opposed to each other is in close contact with the shaft 20, so that both sides of the spring 60 are supported to further support (54, 74) It is preferable.

The operation and effect of the present invention configured as described above will be described based on the operation state of the rotary cam 40 and the torsion spring 80 according to the rotation operation of the refrigerator door.

When the refrigerator door is opened, the slide cam 50 is pushed by the guide part 42 while the rotary cam 40 is rotated along with the rotation of the refrigerator door, thereby linearly moving to one side of the housing member 10. In this case, the slide cam 50 pushed by the housing member 10 receives the elasticity of the spring 60 so that the stop state of the refrigerator door is stably maintained unless external pressure is applied at all points.

At this time, the torsion spring 80 is installed between the support member 70 and the door connection member 30 is compressed or released according to the rotation of the refrigerator door.

That is, when the refrigerator door is opened, the compressive force is zero, and when the refrigerator door is closed, the compressive force is at its highest.

The rotary cam 40 and the torsion spring 80 operated as described above will be described with reference to FIGS. 5A to 7.

In the open state of the refrigerator door, the rotary cam 40 and the slide cam 50 maintain a stable engagement state (see FIG. 5A), and a torsion spring installed between the support member 70 and the door connection member 30. The compression force of 80 is zero (see Fig. 6A).

When the refrigerator door is gradually lowered in the open state (section CB of FIG. 7), the sliding portion 52 of the slide cam 50 slides from the guide portion 42 of the rotary cam 40 gradually. As it is pushed to one side of the housing member 10, the torsion spring 80 is gradually compressed according to the rotation of the door connection member (30).

Then, before the refrigerator door is lowered and completely sealed (the section BA of FIG. 7), the sliding portion 52 of the slide cam 50 is slid to the front end portion of the guide portion 42 of the rotary cam 40. The refrigerator door loses the stop function (see FIG. 5B), and the torsion spring 80 is compressed to the highest level according to the rotation of the door connecting member 30, and the refrigerator door is gradually lowered and sealed to the refrigerator main body stably. (See FIG. 6B).

As described above, the present invention can stably maintain an open state in all sections when the refrigerator door is opened, and when the refrigerator door is kept stable in an open state in a certain section and then goes beyond a certain section, the refrigerator is opened by the torsion spring 80. By blocking the sudden drop of the door it is possible to significantly reduce the impact and prevent accidents in advance.

As described above, according to the present invention, the door is slowly lowered according to the operation of the torsion spring in a certain section during the closing operation by stably maintaining the open state in all sections during the opening of the door to prevent safety accidents due to sudden drops. By controlling so as to significantly reduce the impact and noise generated when descending, there is an advantage that can improve the operation reliability by improving the connection operation of the parts according to the opening and closing operation of the refrigerator door.

In addition, the configuration of the rotating cam and the torsion spring of the hinge device is very simple, so that it can be easily installed, thereby improving productivity, and reducing the damage and wear rate of parts, thereby reducing maintenance costs. have.

Claims (4)

A housing member having a cover fixed to the refrigerator body and detachably coupled to both ends thereof, a pair of shafts provided inside the housing member, and a door connection member coupled to one side of the shaft and fixed to the refrigerator door; In the hinged device for a kimchi refrigerator door configured, One side surface is provided to be in contact with the inside of the housing member 10, and the other side surfaces opposed to each other, the guide portion 42 is formed at a predetermined height so that one side surface is inclined at a predetermined interval on the outer circumferential surface, of the shaft 20 A pair of rotary cams 40, one side of which is inserted and fixedly coupled to the fixing unit; The sliding portion 52 protrudes to a certain height on one side inner circumferential surface so that the guide portion 42 of the rotary cam 40 is inserted and engaged, and the spring 60 provided on the other side according to the rotation of the rotary cam 40. A pair of slide cams 50 which are supported by a straight motion; A pair of support members 70 provided on the other side of the spring 60 so as to support the spring 60 carried by the movement of the slide cam 50; Kimchi refrigerator door, characterized in that provided on one side of any one or more of the support member 70, both sides comprising a torsion spring (80) fixed to the support member 70 and the door connection member (30) Hinges for The method of claim 1, An insertion groove 72 is formed on one side of the support member 70 to insert one side of the torsion spring 80. Kimchi refrigerator door hinge device, characterized in that the fixing groove 32 is formed on one side of the door connecting member 30 opposite to the support member 70 is inserted into the other side of the torsion spring (80). The method according to claim 1 or 2, The fixing means is a hinge device for a kimchi refrigerator door, characterized in that the fixing pin (90) passing through the shaft (20) and the rotary cam (40). The method according to claim 1 or 2, On one side surface of the slide cam 50 and the support member 70 opposite to each other, the support portions 54 and 74 which are in close contact with the shaft 20 and are supported by both sides of the spring 60 are further formed. Hinge device for the Kimchi refrigerator door.

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