KR20070044654A - Apparatus for opening and closing door of refrigerator - Google Patents

Abstract

In the door opening and closing device of the refrigerator according to the present invention, the hinge link connecting the door and the main body when the door is opened is moved laterally by the elastic mechanism, and the door and the relative door opened because the movement of the door is guided by the guide mechanism. Separation of the effect is made quickly.

Description

Apparatus for opening and closing door of refrigerator}

1 is a perspective view showing a refrigerator having a conventional door opening and closing device

Figure 2 is a plan view of the main part showing a door closed state of a conventional refrigerator

Figure 3 is a plan view of the main part showing the gasket separation state when the door is closed when the conventional refrigerator

Figure 4 is a plan view of the main part showing a shock occurrence state when the door is closed in the refrigerator of the prior art

5 is a perspective view of a refrigerator having a door opening and closing apparatus according to a first embodiment of the present invention;

Figure 6 is an exploded perspective view showing the main part of the door opening and closing apparatus according to the first embodiment of the present invention

7 is a plan view of main parts of the door opening and closing apparatus according to the first embodiment of the present invention;

8 is a plan view of an essential part showing a door closed state according to a first embodiment of the present invention;

9 is a plan view showing the open state of the door according to the first embodiment of the present invention

10 is a plan view showing the closed state of the door according to the first embodiment of the present invention

11 is a plan view showing the state of the elastic mechanism and the guide mechanism when the door is closed when the refrigerator according to the first embodiment of the present invention

12 is an operation view showing a refrigerator door according to a first embodiment of the present invention

13 is a plan view of an essential part of a refrigerator in which an elastic mechanism according to a second embodiment of the present invention is shown;

14 is a front view showing a refrigerator according to a third embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

35, 35R, 35L: Door 37: Gasket

39: door bracket 40: refrigerator body

46: hinge bracket 50: gasket assembly

51: Gasket Holder 53: Gasket

55: magnetic material 60: guide mechanism

61 cam member 62 cam surface

62a: engagement surface 62b: contact surface

63: locking portion 64: support portion

65 cam contact lever 67 roller

70: upper hinge mechanism 72: hinge link

72a: bracket hinge shaft 72b: door hinge shaft

74: elastic mechanism 76: stopper

80: lower hinge mechanism 82: hinge axis

The present invention relates to a door opening and closing device of the refrigerator, and more particularly, a door opening and closing device of the refrigerator which allows the door to be quickly separated from the relative door by rotating the hinge link is formed by the elastic mechanism, respectively, the rotation center is formed on the door and the main body. It is about.

1 is a perspective view showing a refrigerator having a conventional door opening and closing device.

As shown in the refrigerator, a refrigerating chamber 1 is positioned at an upper side and a freezing chamber 2 is positioned at a lower side thereof. In particular, the refrigerating chamber is a French-type refrigerator in which a partition wall separating the interior is not formed.

The refrigerating chamber (2) has a door (3) for opening and closing the structure of the two-door open type, the circumferential surface of each door (3) is provided with a gasket (10) in close contact with the refrigerator main body (5) so that cold air does not leak out do.

In particular, the gasket 11 is installed so that cold air does not leak even in a portion where the doors 3 meet each other. In general, a refrigerator of a French type is provided with a filler on one door so that the gaskets of both doors are in close contact with each other. It has a structure, or a filler is provided without a filler (fillerless) structure in which the gaskets 11 of both doors 3 are in close contact with each other.

The refrigerator shown in FIG. 1 shows a pillarless type, and side gaskets 11 provided on both doors are in close contact with each other while the doors 3 are closed to seal the gap between the doors 3.

FIG. 2 is a plan view of an essential part showing a state in which the side gaskets 11 are in close contact with each other when both the doors are closed.

The gasket 11 is provided with a magnetic body 14 to maintain the mutual close force therein, the adhesion of the two gaskets 11 is a problem that the other door is also opened when one door 3 is opened. .

Due to this problem, a door separation structure is provided which separates the open door from the counterpart door so that both the gaskets 11 are separated when the door 3 is initially opened and the door 3 is almost closed.

That is, the hinge mechanism 15 connecting the refrigerator main body 5 and the door 3 is formed of a hinge link 17 to allow horizontal movement, that is, translational movement of the door when the door is opened and closed. 17 is connected to the hinge bracket 16 and the door 3 installed in the refrigerator main body 5 so as to be relatively rotatable.

The hinge mechanism 15 is provided with an elastic member 18 to provide an elastic force in the direction in which the door 3 is in close contact with the mating door.

And when the door is opened and closed, a spaced apart mechanism is installed to move the open door by the method of being pushed to each other.

Here, the separation mechanism is composed of a cam member 21 installed on the refrigerator main body 5 and a cam contact lever 25 installed on the door 3 to contact the cam member 21, and the cam contact lever ( 25 is provided with a roller 26 to make a rolling contact with the cam member 21.

In particular, the cam member 21 has an open cam surface 21b to which the cam contact lever 25 is moved when the door 3 is opened, and the cam contact lever 25 is moved when the door 3 is closed. The closed cam surface is divided into 21c is configured.

And the hinge mechanism and the spacer is installed on the upper / lower portion of the door (3), respectively.

So look at the operation of the door is configured as follows.

First, when the user opens the door 3, the door is opened while rotating around the door hinge shaft 17a, and at this time, the roller 26 of the cam contact lever 25 is opened according to the displacement of the door 3 being opened. It moves along the cam surface of the cam member 21. When the roller 26 reaches the apex 21a of the cam surface, as shown in FIG. 3, the gaskets 11 are spaced apart from each other while the door 3 is pushed to the right about the main body hinge shaft 17b. It rotates and the door opens.

On the contrary, even when the door 3 is closed, as shown in FIG. 4, since the roller 26 of the cam contact lever 25 moves along the curved surface of the cam member 21, both gaskets 11 are separated. The door is closed.

Since the door 3 that is opened and closed when the door is opened and closed as described above is separated from the counterpart door, the interference between both gaskets 11 is minimized, and when the one door is opened, the other door is followed and opened instantly. In addition, frequent contact of gaskets can solve some of the problems of rapid wear.

However, when the separation mechanism is configured as in the related art, when the door 3 is opened, the hinge link 17 is rotated by a predetermined angle about the door hinge axis 17a and then applied to the elastic force of the elastic member 18. When the hinge link 17 is returned to its original position, the rattling movement is generated in the process of returning the hinge link 17 to the initial position, and the hinge link 17 hits the stopper 19 to generate noise. have.

In addition, when the user opens the door 3 quickly, the door 3 is moved to the path P shown in FIG. 4, and the noise generated at this time is increased.

In addition, when the door 3 is closed, the cam contact lever 25 is returned to its original position through the same path as that of the cam contact lever 25, and the cam contact lever 25 is the closed cam surface of the cam member 21. There is a problem inevitably collide with (21c) to generate noise.

In addition, the door opening and closing device of the conventional refrigerator is difficult to manufacture and assemble the elastic member 18 to return to the hinge link 17 to the original position has a problem that the reliability of the product is lowered.

The present invention has been made to solve the above problems, and provides a door opening and closing device of the refrigerator to open the door is quickly spaced from the relative door by rotating the hinge link is formed by the elastic mechanism, respectively, the center of rotation on the door and the main body. Its purpose is to.

It is another object of the present invention to provide a door opening and closing device of a refrigerator in which a moving path of a door opened when the door is opened is guided by a guide mechanism.

The door opening and closing apparatus of the refrigerator according to the first aspect of the present invention for realizing the above object and a plurality of doors for opening and closing the refrigerator body; A hinge link connecting the main body and the door, the rotation center being formed on the main body and the door side, respectively; The door-side rotation center of the hinge link is characterized in that it comprises an elastic mechanism for providing an elastic force to the hinge link to be spaced apart from the relative door.

Here, the elastic mechanism is fixed at one end to the body side and the other end is fixed to the hinge link.

And the hinge link is a bracket hinge shaft hinged to the main body; Consists of a door hinge shaft hinged to the door, the elastic mechanism is connected to the door hinge shaft side to rotate the door hinge shaft around the bracket hinge shaft, the hinge link is rotated more than a predetermined angle in the body A stopper is formed to prevent this.

In addition, the refrigerator is further provided with a guide mechanism for guiding the movement path of the door that is opened to interfere with each other between the main body and the door.

The guide mechanism may include: a cam member having a cam surface, which is installed on one of the main body or the door and is a movement path of the open door; And a cam contact lever provided on the other of the main body or the door and interfering with the cam surface of the cam member, wherein the cam surface is formed toward the relative door side of the open door.

In particular, the cam surface further comprises a engaging surface for contacting the cam contact lever to support the cam contact lever, and a contact surface for contacting the cam contact lever when the door is closed, wherein the contact surface is connected to the engaging surface. It is connected to guide the cam contact lever to the engaging surface side.

On the other hand, the cam member is disposed between the hinge link and the cam contact lever to limit the cam contact lever is spaced apart from the mating door, and the cam contact lever is installed between the cam contact lever and the mating door It is comprised by the support part which prevents to move to the counterpart door side more than a predetermined distance.

Door opening and closing device of the refrigerator according to a second aspect of the present invention comprises a plurality of doors for opening and closing the refrigerator body; A hinge mechanism connecting the main body and the door, the rotation center being formed on the main body and the door side, respectively; An elastic mechanism for providing an elastic force to the hinge mechanism such that the door-side rotation center of the hinge mechanism is spaced apart from the mating door; It comprises a guide mechanism for guiding the movement path of the door that is opened to interfere with each other between the main body and the door.

Here, the hinge mechanism is composed of an upper / lower hinge mechanism, the upper hinge mechanism is provided with a hinge link is formed in each of the rotation center on the main body and the door, the lower hinge mechanism is hinged connecting the main body and the door One hinge shaft is formed, or each of the upper and lower hinge mechanisms is provided with hinge links each having a rotation center formed in the main body and the door.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

Embodiments of the present invention will be described with reference to the French type refrigerator that can be opened in the left and right direction is provided with a double door type in one refrigerator compartment.

Figure 5 is a perspective view of a refrigerator having a door opening and closing device according to a first embodiment of the present invention, Figure 6 is an exploded perspective view showing the main part of the door opening and closing device according to the first embodiment of the present invention, Figure 7 8 is a plan view of a main part of the door opening and closing apparatus according to the first embodiment of the present invention, and FIG. 8 is a plan view of the main part of the door closing state according to the first embodiment of the present invention.

As shown in FIG. 5, in the refrigerator according to the present invention, a freezing compartment 31 is positioned at a lower side thereof, and a refrigerating chamber 32 having double doors 35L and 35R is positioned at an upper side thereof, and both doors 35L and 35R are positioned at the upper side thereof. ) Is connected to the hinge mechanism (70) (80) to the refrigerator main body 40 is configured to open and close the refrigerating chamber (32) in a case opening manner.

Gaskets 37 are installed on both the doors 35L and 35R in close contact with the refrigerator main body 40 so as to prevent cold air from leaking out to the outside.

In particular, since the partition walls or the refrigerator main body 40 do not exist in the portions where the two doors 35L and 35R face each other, the barriers 35R and 35R are closely attached to each other to seal the gap between the doors 35L and 35R. Side gasket assembly 50 (hereinafter referred to as 'gasket assembly') is installed.

As shown in FIG. 8, the gasket assembly 50 is provided with a gasket holder 51 installed on the side surfaces of the doors 35L and 35R, and is provided in front of the gasket holder 51 to form a gasket of the mating door. A gasket 53 in close contact with the gasket 53 and a magnetic body 55 provided in the gasket 53 to generate magnetism to be in close contact with the gasket 53 of the mating doors 35L and 35R.

In the present invention, in order to minimize the phenomenon that the doors 35L and 35R are opened in the state in which both gasket assemblies 50 are in close contact with each other, both doors 35 are horizontally moved horizontally when both doors are opened and closed. An elastic mechanism 74 that separates the gasket assembly 50 from each other and a guide mechanism 60 for guiding the moving direction of the door 35 that is laterally moved are installed.

The hinge mechanisms 70 and 80 are composed of an upper hinge mechanism 70 and a lower hinge mechanism 80, as shown in FIGS. 5 to 8, and the upper and lower hinge mechanisms 70 and 80. Is the center of rotation of the door (35L, 35R) when the door (35L, 35R) is opened and closed.

Here, the upper and lower hinge mechanisms 70 and 80 include hinge links 72 connected to the main body 40 and the doors 35L and 35R by hinge shafts 72a and 72b, respectively. In the present embodiment, the hinge bracket 46 and the hinge link 72 installed in the main body 40 are connected by the bracket hinge shaft 72a, and the door bracket 39 and the hinge link (installed in the door 35) 72 is connected by the door hinge shaft 72b.

The elastic mechanism 74 provides an elastic force in a direction in which the doors 35L and 35R are spaced apart from the mating doors 35R and 35L.

Thus, the elastic mechanism 74 is formed of a coil spring that connects the hinge link 72 and the main body 40 side.

One end 74a of the elastic mechanism 74 is fixed to the main body 40 and the other end 74b is fixed to the hinge link 72, and the other end 74b is on the door hinge shaft 72b side. The door hinge shaft 72b is rotated about the bracket hinge shaft 72a. That is, the elastic mechanism 74 rotates the hinge link 72 by pulling the other end 74b of the hinge link 72 by the restoring force of the spring, and rotates the door by rotating the hinge link 72. The side gasket assemblies 50 of 35L and 35R are quickly separated from the mating side gasket assemblies.

In addition, the hinge bracket 46 provided on the main body 40 side is formed with a stopper 76 which prevents the hinge link 72 from being rotated by a predetermined angle by the elastic mechanism 74.

On the other hand, the guide mechanism 60, as shown in Figs. 6 to 10, the cam member 61 is installed on the hinge bracket 46 of the main body 40, and the door brackets of the doors 35L and 35R. The cam contact lever 65 is installed in the 39, and the cam member 61 has a cam surface for guiding the movement direction of the cam contact lever 65 when the cam contact lever 65 moves in the lateral direction. 62 is formed, and a roller 67 is installed at the end of the cam contact lever 65 in contact with the cam surface 62.

Here, the cam member 61 is installed on the upper surface of the refrigerator body 40, the front portion is installed at a position that does not protrude forward of the refrigerator body 40, the cam contact lever 65 is the It is preferable to protrude from the upper part of the door 35 in the direction of the cam member 61.

In addition, the cam member 61 is located on the hinge mechanism 70 side, and the locking portion 63 in which the cam surface 62 is formed, and the cam contact lever 65 are moved to the counter door side by a predetermined distance or more. It consists of a support 64 for blocking.

Here, the cam surface 62 formed on the locking portion 63 includes a locking surface 62a on which the roller 67 of the cam contact lever 65 is seated and locked when the door 35 is closed. ) Is composed of a contact surface 62b which is in contact with the roller 67 of the cam contact lever 65 when the cam contact lever 65 is closed, and the locking surface 62a and the contact surface 62b form an angle greater than or equal to a predetermined angle to form the cam. The contact lever 65 is prevented from easily moving toward the contact surface 62b.

Referring to Figures 8 to 11 the operation of the door opening and closing apparatus of the refrigerator according to the present invention configured as described above are as follows.

8 is a plan view of an essential part of the door closed state according to the first embodiment of the present invention, Figure 9 is a plan view showing the open state of the door according to the first embodiment of the present invention, Figure 10 is a view of the present invention FIG. 11 is a plan view showing a closed state of the door according to the first embodiment, and FIG. 11 is a plan view showing the states of the elastic mechanism and the guide mechanism when the door is closed in the refrigerator according to the first embodiment of the present invention.

First, the process of opening the door will be described, and for convenience, only the process of opening the right door 35R will be described.

As shown in FIG. 8, the side gasket assemblies 50 of the doors 35 installed to face each other while the doors 35L and 35R are closed are maintained in close contact with each other by the magnetic force of the magnetic body 55.

When the user opens the door 35R in such a state, as shown in FIG. 9 or 11, the door 35R is opened by the elastic force of the elastic mechanism 74 installed in the hinge mechanism 70. Spaced at 35L.

Here, the elastic mechanism 74 pulls the door hinge shaft 72b of the hinge link 72 to rotate the hinge link 72, the hinge link 72 is the bracket hinge shaft 72a The door hinge shaft 72b is rotated around the center, and the side gasket assembly 50 of the door 35R is quickly moved to the right side from the mating side gasket assembly by the rotation of the hinge link 72 to be separated.

And the elastic mechanism 74 for rotating the hinge link 72 generates an elastic force by the restoring restoring force, the hinge link 72 is stopped by the stopper 76 after the predetermined angle is rotated to stop the rotation .

On the other hand, when the door hinge shaft 72b of the hinge link 72 is rotated while the door 35R is opened, the entire door 35R is moved to the right, and the cam is moved by the movement of the door 35R. The contact lever 65 is also moved to the right side.

At this time, the cam contact lever 65 is moved along the cam surface 62 of the cam member 61 by the movement of the door 35R.

Therefore, when the door 35R is closed, even if the elastic force of the elastic mechanism 74 is applied, the cam contact lever 65 is caught by the locking portion 63 of the cam member 61 and stopped. When the cam contact lever 65 passes through the engaging surface 62a while 35R is opened, the cam contact lever 65 is quickly moved to the contact surface 62b of the cam surface 62.

That is, when the door 35R is opened at a predetermined angle, the cam contact lever 65 passes through the boundary between the engaging surface 62a and the contact surface 62b, and the cam contact lever 65 is the engaging surface 62a. When passing through the boundary between the contact surface 62b and the door 35R is quickly moved to the right direction by the elastic force of the elastic mechanism 74 installed on the hinge link 72, it is spaced apart from the counterpart door 35L.

Thus, when the door 35R is opened, the lateral movement distance of the door 35R is greater than the angle at which the door 35R is rotated, so that the door 35R is quickly spaced apart from the counterpart door 35L.

Next, a case in which the door is closed will be described with reference to FIG. 10 or 11.

First, when the door 35R is opened, the door hinge shaft 72b of the door 35R is moved to the right by the elastic mechanism 74, and the user needs to close the door 35R to close the door 35R. 35R is pushed and moved toward the mating door 35L, and the hinge link 72 is rotated clockwise by the movement of the door 35R.

At this time, the door hinge shaft 72b of the door 35R is rotated clockwise about the bracket hinge shaft 72a by the rotation of the hinge link 72, and the elastic mechanism 74 of the user Beauty is increased by force.

When the door 35R is almost closed, the cam contact lever 65 of the door 35R is in contact with the cam contact lever 61, and the cam contact lever 65 is engaged with the cam member 61. After contacting the contact surface 62b of the portion 63 first, the left side is moved along the contact surface 62b and then guided to the locking surface 62a.

On the other hand, even if the user closes the door 35R with an excessive force, the cam contact lever 65 is caught by the support 64 of the cam member 61 and is not moved toward the counter door 35L by a predetermined distance or more.

Thus, when the cam contact lever 65 is positioned between the engaging portion 63 and the support portion 64 of the cam member 61, the side gasket assembly 50 of the door 35R is disposed on the mating side gasket assembly 50. In close contact with the inside of the refrigerator main body 40 by an attraction force of the magnetic bodies 55 embedded in the side gasket assembly 50.

12 is an operation view showing a refrigerator door according to a first embodiment of the present invention.

As shown in FIG. 12, in the refrigerator according to the first embodiment of the present invention, the hinge link 72 is installed only on the upper hinge mechanism 70 of the door 35, and the hinge shaft 82 is provided on the lower hinge mechanism 80. ) Is installed.

Thus, when the door 35 is opened and closed, the door 35 is moved upward only in the lateral direction, so that the tilting movement is rotated about the hinge axis 82 when viewed from the front of the door 35.

The side gasket assembly 50 of the door 35R, which is opened when the upper end of the door 35 is tilted, is easily separated from the side gasket assembly 50 of the door 35L, as well as the side gasket assembly 50. Friction between

In addition, when the door 35 is tilted, since the center of gravity of the door 35R is moved to the counterpart door 35L when the door is closed, the door 35R is accelerated to the counterpart door 35L and thus moved more naturally. It works.

13 is a plan view of an essential part of a refrigerator in which an elastic mechanism according to a second exemplary embodiment of the present invention is shown.

The refrigerator according to the second embodiment of the present invention is the same as the first embodiment except that the elastic mechanism 75 is installed in the torsion spring in the first embodiment.

Here, the elastic mechanism 75 formed by the torsion spring has one end 75a fixed to the main body 40 side and the other end 75b fixed to the hinge link 72.

In particular, the connecting portion (75c) for connecting the one end (75a) and the other end (75b) of the elastic mechanism (75) is installed by entangling the bracket hinge shaft (72a) of the hinge link (72), thereby closing the hinge link (72) Provides an elastic force away from the mating door.

Hereinafter, since the rest of the configuration for the second embodiment of the present invention is the same as the first embodiment, a detailed description thereof will be omitted.

14 is a front view of a refrigerator according to a third embodiment of the present invention.

Unlike the first embodiment, the refrigerator according to the third embodiment of the present invention has a hinge link 72 installed at both the upper and lower hinge mechanisms 70 and 170 so that the door 35R is opened and closed when the door 35R is opened and closed. ) Is the same as the first embodiment except for translating laterally.

Here, the configuration of the lower hinge mechanism 170 is the same as the configuration of the upper hinge mechanism (70 in Fig. 6) of the first embodiment.

Thus, when the door 35R is opened, the door 35R is rotated by the hinge link 72 so that the door hinge shaft 72b is rotated so that the door 35R is quickly separated from the counterpart door 35L. Rather, the upper and lower ends of the door 35R are laterally moved at the same time.

As described above, the fillerless refrigerator according to the present invention has been described with reference to the illustrated drawings, but the present invention is not limited to the embodiments and drawings described herein, and is provided to those skilled in the art within the scope of the technical idea of the present invention. Application is possible.

In the door opening and closing device of the refrigerator according to the present invention configured and operated as described above, the hinge link connecting the door and the main body is laterally moved by the elastic mechanism when the door is opened, and the movement of the door is guided by the guide mechanism. Therefore, there is an effect that separation of the door and the relative door that is opened is made quickly.

In addition, the door opening and closing device of the refrigerator according to the present invention is connected to the door hinge axis of the hinge link to quickly rotate the rotation center of the door, there is an effect that the open door is quickly separated from the relative door.

In addition, the door opening and closing apparatus of the refrigerator according to the present invention has an effect of preventing the door from being separated from the relative door when the door is closed because the cam member of the guide mechanism is installed between the cam contact lever and the hinge link.

In addition, the door opening and closing device of the refrigerator according to the present invention has a stopper to prevent the hinge link is rotated more than a predetermined angle is installed in the main body has the effect of maintaining the rotation angle of the hinge link at an appropriate angle.

In addition, the door opening and closing device of the refrigerator according to the present invention has a hinge mechanism in which the hinge link is installed on the upper and lower portions of the refrigerator door, thereby having an effect of rapidly translating the upper and lower ends of the door from the relative door.

In addition, the door opening and closing device of the refrigerator according to the present invention has a hinge mechanism in which the hinge link is installed only on the upper portion of the refrigerator door, thereby opening the door while the door is tilted.

Claims (14)

A plurality of doors for opening and closing the refrigerator body; A hinge link connecting the main body and the door, the rotation center being formed on the main body and the door side, respectively; And a resilient mechanism for providing an elastic force to the hinge link so that the door-side rotation center of the hinge link is spaced apart from the counterpart door. The method according to claim 1, The elastic mechanism is a door opening and closing device of the refrigerator, characterized in that one end is fixed to the body side and the other end is fixed to the hinge link. The method according to claim 1, The hinge link is a bracket hinge shaft hinged to the main body; And a door hinge shaft hingedly connected to the door, wherein the elastic mechanism is connected to the door hinge shaft to rotate the door hinge shaft about the bracket hinge shaft. The method according to claim 1, The main body of the refrigerator door opening and closing device, characterized in that the stopper is formed to prevent the hinge link is rotated more than a predetermined angle. The method according to any one of claims 1 to 4, The refrigerator is a door opening and closing device of the refrigerator, characterized in that the guide mechanism for guiding the movement path of the door to be opened to interfere with each other between the main body and the door. The method according to claim 5, The guide mechanism includes a cam member having a cam surface, which is installed on either the main body or the door and is a movement path of the open door; The door opening and closing device of the refrigerator, characterized in that the cam contact lever installed on the other of the main body or the door and interfering with the cam surface of the cam member. The method according to claim 5, The cam surface is a door opening and closing device of the refrigerator, characterized in that formed toward the relative door side of the open door. The method according to claim 5, The cam surface is a door opening and closing device of the refrigerator characterized in that it comprises a engaging surface for supporting the cam contact lever in contact with the cam contact lever. The method according to claim 8, The cam surface further comprises a contact surface which is in contact with the cam contact lever when the door is closed, the contact surface is connected to the engaging surface is formed to guide the cam contact lever to the engaging surface side door of the refrigerator Switchgear. The method according to claim 5, The cam member is a door opening and closing device of the refrigerator, characterized in that the locking portion is located between the hinge link and the cam contact lever to limit the cam contact lever is spaced apart from the counter door. The method according to claim 5, And the cam member is provided between the cam contact lever and the counterpart door to support the cam contact lever to prevent the cam contact lever from moving to the counterpart side for a predetermined distance or more. A plurality of doors for opening and closing the refrigerator body; A hinge mechanism connecting the main body and the door, the rotation center being formed on the main body and the door side, respectively; An elastic mechanism for providing an elastic force to the hinge mechanism such that the door-side rotation center of the hinge mechanism is spaced apart from the mating door; And a guide mechanism for guiding a moving path of a door that is opened by interfering with each other between the main body and the door. The method according to claim 12, The hinge mechanism is composed of an upper / lower hinge mechanism, The upper hinge mechanism is provided with a hinge link is formed in each of the rotation center on the main body and the door, the lower hinge mechanism is characterized in that a hinge shaft for hinge connecting the main body and the door is formed Switchgear. The method according to claim 12, The hinge mechanism is composed of an upper / lower hinge mechanism, Door opening and closing device of the refrigerator, characterized in that the hinge link is formed in the upper and lower hinge mechanisms are formed in the main body and the door, respectively, the center of rotation.

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