KR101291203B1 - Automatic door opening-closing Apparatus and the Refrigerator thereof - Google Patents

Abstract

A cabinet, a door hinged to an opening of the cabinet, a first rotating shaft provided to rotatably couple the door to the cabinet, a damping device for automatically opening and closing the door, and a damping device according to the degree of opening and closing of the door. An automatic opening and closing device for a door having a damping device and a second rotating shaft for rotatably connecting the door to perform an automatic opening and closing function, the damping device comprising a buffer member and a link member; The link member has one end coupled to the shock absorbing member, and the other end connected to the second rotating shaft. Since the damping device and the configuration connecting it are simple and robust, the door is opened and closed smoothly with a small force, and in particular, the door is automatically opened and closed within a predetermined angle, thereby increasing the user's satisfaction.

Description

Automatic door opening-closing Apparatus and the Refrigerator

Figure 1 is a perspective view showing the appearance of the reservoir according to a preferred embodiment of the present invention.

Figure 2 is a perspective view showing a coupling between the door of the reservoir according to an embodiment of the present invention, and the automatic opening and closing device of the door.

Figure 3 is a perspective view showing the interior of the automatic door opening and closing device according to an embodiment of the present invention.

Figure 4 is an exploded perspective view showing a buffer member of the automatic door opening and closing device according to an embodiment of the present invention.

Figure 5 shows the operating state of the automatic door opening and closing device when the door is opened at an angle smaller than the right angle.

Figure 6 shows the operating state of the automatic door opening and closing device when the door is opened at a right angle.

Figure 7 shows the operating state of the automatic door opening and closing device when the door is opened larger than approximately right angle and smaller than the maximum opening angle.

Figure 8 shows the operating state of the automatic door opening and closing device when the door is opened at the maximum opening angle.

Description of the Related Art [0002]

1: cabinet 2, 5: door

3: door shelf 4: storage room

6: door automatic opening and closing device

10 damping device 11 casing

12: buffer member 12a: cylinder

12b: cap member 12c: first sealing member

12d: second sealing member 13: the first connecting portion

14: piston 15: second connection portion

16 link member 17 support plate

18: adjusting member 20: first supporting member

21: plane of the first support member 22: side

23: coupling portion 24: the first rotating shaft

25: first coupling hole 26: second coupling hole

27: engaging projection 30: second support member

31; 2nd rotating shaft 32: fastening hole

33: stopper

The present invention relates to an automatic opening and closing device of a door and a storage device to which the door is applied. More particularly, the door of the storage door opens automatically at a predetermined angle or more, automatically closes at or below a predetermined angle, and opens and closes automatically. Relates to a device.

In general, the storage compartment is divided into each other, and the freezer and the refrigerating compartment are provided, and the freezer stores foods that must be kept below the freezing temperature, such as meat and ice cream, and the freezer stores the foods at appropriate temperatures at a temperature that does not freeze, such as vegetables or drinks. Stored.

Such a store usually includes a storage compartment having an open front surface to accommodate storage, and a door for opening and closing the storage compartment is installed at the front of the storage compartment. In addition, the door is rotatably supported by a hinge device mounted on the upper and lower portions of the main body left or right so that the door can be opened and closed by rotation. Such a hinge device is mainly provided with a door automatic opening and closing device that can open and close the door of the store gently, the door automatic opening and closing device to open and close the door automatically in a predetermined section, when the door is opened and closed smoothly, the door is less closed It is a device that can be completely closed even in order to prevent cold air leakage of the storage.

In the case of large storage, the cabinet itself is large and the door hinged thereto is also large, so the door itself is very heavy. Therefore, when the user uses the storage, there is a problem that opening and closing the door is inconvenient due to the weight of the door.

In addition, since the door itself is heavy, there is a problem that the cold storage door can not be tightly closed due to the shock when the door is closed tightly.

As a structure to improve this, the automatic opening and closing device of the storage door using the spring elasticity is disclosed in Korean Utility Model Publication No. 91-11734. The conventional automatic door opening and closing device is provided with a hinge member and a fixing member in turn, and a moving member and a spring are placed thereon, and when the opening is performed, the cutting member of the moving member rotates along the side of the protrusion of the fixing member to open the spring. . When the bottom surface of the movable member is placed on the tip of the fixing member, the door is completely opened while the spring is fully compressed. When the door is pushed again in this state, as the moving member rotates, the side of the cutout moves downward along the side of the protrusion by the elasticity of the spring so that the door is automatically closed.

However, the above-described automatic opening and closing device of the storage door has a problem that a relatively large force must be applied to open the door due to the inclined surface for upwardly moving the moving member with respect to the fixing member.

In addition, when the door is pushed, the door is rapidly closed due to the elasticity of the spring, and noise is generated, which causes damage to the reservoir. In addition, since the moving member must slide, the operation is not smooth and there is a problem that noise occurs in the contact surface.

In addition, the door automatic opening and closing device of the prior art, although slightly different from the above-described prior art, includes a cylinder, a coil spring and oil, a compensator, etc. in the cylinder. However, this is a problem that the gas cell (cell) provided inside the compensator is broken when used for a long time, the gas is generated and the noise is generated in the process of flowing into the oil layer by the compression of the automatic door opening and closing device.

The present invention is to solve this problem, an object of the present invention can be opened and closed smoothly with a small force, the generation of noise is prevented, and the opening and closing is precisely to provide an automatic opening and closing device of the storage door without unnecessary loss of cold air. It is.

In order to achieve the above object, the automatic opening and closing device of the door and the automatic opening and closing device of the storage room to which the same is applied include a cabinet, a door hinged to an opening of the cabinet, and a rotatable door to the cabinet. A damping device for automatically opening and closing the door, a damping device for automatically opening and closing the door, and allowing the damping device and the door to be rotatable so that the damping device can automatically open and close according to the degree of opening and closing of the door. An automatic opening and closing device for a door having a second rotating shaft for connecting, wherein the damping device comprises a buffer member and a link member; One end of the link member is coupled to the shock absorbing member, and the other end is connected to the second rotation shaft.

In addition, the damping device further comprises a casing surrounding the damping device on at least three sides to protect the damping device from external forces.

In addition, the link member is bent by a length corresponding to the length between the first rotary shaft and the second rotary shaft from the other end so as to open the door at an angle greater than the right angle.

In addition, a first support member is coupled to one surface of the casing, and the first rotation shaft is provided on one side of the first support member.

 In addition, the first support member is provided with a bent plate-like member is coupled to the upper surface of the casing, the other surface is coupled to the side of the casing to prevent the first support member from sagging by the load of the door It is characterized by.

In addition, the automatic opening and closing device of the door further includes a second support member, the second support member is formed so that the second rotation shaft is formed on one side and rotatably coupled to one end of the link member, the other side is formed with a fastening hole It is characterized in that coupled to the first rotatable shaft.

In addition, the first support member is provided with a locking projection which is engaged with one side of the second support member in order to adjust the opening angle of the door near the first rotating shaft, and at least one or more coupling holes formed to engage it, The engaging projection coupled with the first coupling hole is for opening the door at a predetermined angle larger than the right angle, and the engaging projection coupled with the second coupling hole, which may be selectively formed therein, is formed to open the door at approximately right angles. It is characterized by.

In addition, a stopper may be formed near the fastening hole of the second support member so as to be caught by a locking protrusion selectively coupled to the first coupling hole or the second coupling hole to adjust the opening angle of the door. .

In addition, the bottom surface of the casing is characterized in that the support plate is formed is formed a coupling hole so as to couple the adjustment member for adjusting the installation height of the cabinet.

In addition, the buffer member may include a cylinder for injecting oil and gas, a cap member provided to close one end of the cylinder, a first sealing member provided in the cylinder to separate the oil and gas, And a second sealing member provided at the other end of the cylinder so that the piston penetrates and relaxes the oil and gas, and the oil penetrates but the oil and gas cannot leak.

In order to achieve the above object, an automatic opening and closing device for a door and a storage device using the same according to another embodiment of the present invention include a cabinet, a door hinged to an opening of the cabinet, and rotatably hinged to the cabinet and the door. A reservoir having a first rotating shaft and a buffer member for automatically opening and closing the door, the reservoir comprising: a second rotating shaft for rotatably connecting the buffer member and the door; A damping device having one end coupled to the buffer member and the other end including a link member connected to the second rotation shaft; The second rotating shaft is formed to be rotatably coupled to one end of the link member on one side, characterized in that it comprises a second support member formed on the other side is fastening hole to be rotatably coupled with the first rotating shaft.

The link member may be bent from the other end by a length corresponding to the length between the first and second rotation shafts so as to open the door at an angle greater than a right angle.

In addition, the damping device is further provided with a casing surrounding the damping device on at least three sides to protect the damping device from external force, one side of the casing is coupled to the door hinge, one side of the door hinge is the first rotating shaft It is characterized in that it is formed.

 In addition, the door hinge is provided with a bent plate-like member is coupled to the upper surface of the casing, the other surface is coupled to the side of the casing characterized in that the door hinge is prevented from sagging by the load of the door. .

In addition, the door hinge has two holes are formed and provided with a locking projection that can be coupled thereto, the locking projection is selectively coupled to any one of the two holes to allow the door to be opened at different angles do.

In addition, the casing is a bottom surface is open, the support plate is provided with a coupling hole is formed on the bottom surface to reinforce the strength of the casing, to engage the adjustment member for adjusting the installation height of the cabinet of the reservoir. do.

In addition, the buffer member may include a cylinder for injecting oil and gas, a cap member provided to close one end of the cylinder, a first sealing member provided in the cylinder to separate the oil and gas, And a second sealing member provided at the other end of the cylinder so that the piston penetrates and relaxes the oil and gas, and the oil penetrates but the oil and gas cannot leak.

In order to achieve the above object, an automatic opening and closing device for a door and a storage device using the same according to another embodiment of the present invention include a cabinet, a door hinged to an opening of the cabinet, and a hinge rotatably hinged to the cabinet. In the automatic opening and closing device of the door having a damping device for automatically opening and closing the door and the first rotary shaft provided to, the automatic opening and closing device of the door is for rotatably connecting the damping device and the door A damping member including a piston; And a link member connecting the piston to the second rotation shaft, wherein the link member is bent by a distance from one end to the first rotation shaft to open the door at a predetermined angle. do.

In addition, a first support member is coupled to a cabinet side, and a first rotation shaft is formed at one side of the first support member, and a second support member is further provided at the storage door side, and the second support member is at one side. A second rotating shaft is formed to be rotatably coupled to one end of the link member, the other side is characterized in that the coupling hole is formed so as to be rotatably coupled to the first rotating shaft.

In addition, the first support member is provided with a locking projection that is engaged with one side of the second support member in order to adjust the opening angle of the door near the first rotating shaft, the first locking projection for opening the door at a predetermined angle The second locking protrusion, which may be selectively installed thereon, is formed to open the door at an angle different from the door opening angle caused by the first locking protrusion.

In addition, the buffer member may include a cylinder for injecting oil and gas, a cap member provided to close one end of the cylinder, a first sealing member provided in the cylinder to separate the oil and gas, And a piston provided to compress or relax the oil and gas, and a second sealing member provided at the other end of the cylinder such that the piston penetrates but the oil and gas cannot leak. .

In order to achieve the above object, an automatic opening and closing device for a door and a storage device using the same according to another embodiment of the present invention include a cabinet, a door hinged to an opening of the cabinet, and a hinge rotatably hinged to the cabinet. In the reservoir having a first rotary shaft provided to, and a damping device for automatically opening and closing the door, the reservoir has a damping device and a second rotary shaft for rotatably connecting the door, The damping device includes a buffer member; And a link member connecting the buffer member to the second rotation shaft, wherein the door is opened at a right angle so that an end portion of the link member connected to the second rotation shaft and the first rotation shaft and the shock absorbing member is in a straight line shape. The door is temporarily stopped, the door is opened at an angle greater than a right angle, and an angle formed by an end of the second rotating shaft, the first rotating shaft, and an end of the link member connected to the buffer member is an obtuse angle. In the case that the door is a force applied in the opening direction, the door is opened at an angle smaller than the right angle so that the angle formed by the end of the link member connecting the second rotating shaft and the first rotating shaft and the buffer member is greater than 180 degrees The door is characterized in that a force is applied in the closing direction.

The buffer member may further include a cylinder, a buffer material such as oil or gas provided inside the cylinder, and a piston at one end thereof connected to the link member while the other end is pressurized or decompressed. One end of the piston is inserted into the cylinder of the cushioning member to open the pressurizing material and pressurizes the buffering material to the maximum when the door is opened at a right angle and pauses. When closing or opening the door at a right angle or more, the door is automatically opened and closed automatically by the restoring force of the buffer material.

In addition, the link member is bent by a distance from the second rotary shaft to the first rotary shaft at a point connected with the second rotary shaft to open the door at an angle greater than a right angle and the bending when the door is opened at the maximum angle. The addition is characterized in that the first axis of rotation.

In addition, a casing having at least three surfaces is provided outside the damping device, and a first support member having a first rotating shaft is coupled to one surface of the casing, and a second support having a second rotating shaft formed at the first supporting member. The member is coupled to the second support member, characterized in that the fastening hole is formed and the fastening hole and the first rotating shaft is rotatably coupled.

In addition, the bottom surface of the casing is characterized in that the support plate is formed is formed a coupling hole so as to couple the adjustment member for adjusting the installation height of the cabinet.

In order to achieve the above object, an automatic opening and closing device for a door and a storage device using the same according to another embodiment of the present invention include a cabinet, a door hinged to an opening of the cabinet, and a hinge rotatably hinged to the cabinet. An automatic opening and closing device of a storage door having a first rotating shaft and a damping device for automatically opening and closing the door, the automatic opening and closing device of the storage door is fixed to the door and rotatable with the damping device. And a damping device installed at a right angle with the door at an upper side and / or a lower side of the cabinet so as to be connected to the door, wherein the damping device comprises a buffer member, a link member, and a piston; The first end of the piston is coupled to the buffer member, the second end is coupled to the link member, one end of the link member is coupled to the second end of the piston and the other end is coupled to the second rotary shaft It is characterized by.

In addition, the link member is bent by a distance from the other end to the first rotation shaft from the other end to open the door at an angle greater than a right angle so that the bent portion is opened at the maximum angle when the door is opened at the maximum angle. It is characterized by being caught.

In addition, the damping device is further provided with a casing surrounding the damping device on at least three sides to protect the damping device from external force, the buffer member is fixed to the casing side, the piston in the opposite direction to the first axis of rotation It is characterized by being installed.

In addition, the buffer member is characterized in that the gas spring comprising an oil layer and a gas layer therein.

Hereinafter, an automatic opening and closing device of a storage door according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings. Figure 1 is a perspective view showing the appearance of the reservoir according to a preferred embodiment of the present invention.

The reservoir has a cuboid shaped cabinet 1, and the front side is opened to accommodate food. The doors 2 and 5 are hinged to the opened front surface. The doors of the double door storage are provided at left and right sides, and inside the freezer compartment 4 and a refrigerating compartment (not shown), respectively. Each door (2, 5) is provided with a shelf (3) for storing small food or drink bottles, etc., the front of the door is provided with a handle for easy opening and closing.

A door automatic opening and closing device 6 is installed together with a hinge member (not shown) at a portion connected to the lower doors 2 and 5 of the cabinet 1. The body of the automatic door opening and closing device 6 is installed at the lower end side of the cabinet 1 and the doors 2 and 5 are connected to each other, and may be installed at left and right upper and lower ends or left and right lower ends.

Figure 2 is a perspective view showing a coupling between the door of the reservoir according to an embodiment of the present invention, and the automatic opening and closing device of the door. The second support member 30 is attached to the lower end of the door 5. The second support member 30 is a plate-shaped member, the second rotating shaft 31 extending upward and downward on one side thereof is rotatably connected to the door 5 upwardly. A fastening hole 32 is formed at the other side of the second support member 30, and a stopper 33 is formed at one side of the fastening hole 32 to protrude. The lower side of the second rotary shaft 31 is rotatably connected to the link coupling hole 16a of the link member 16.

The first support member 20 coupled to the second support member includes a flat portion 21 coupled to one surface of the casing 11, a side portion 22 bent from the flat portion 21, and a casing 11. It includes a coupling portion 23 is coupled to the side of the. In addition, the first support member 20 includes a first rotation shaft 24, first and second coupling holes 25 and 26, and a locking protrusion 27.

The first rotation shaft 24 is provided to protrude to a predetermined height on the flat portion 21 of the first support member 20, it is preferable to be provided integrally, but to form a hole in the flat portion 21 It may also be tightened. The first rotary shaft 24 is provided to protrude both up and down, the upper portion is coupled to the fastening hole 32 and the door 5 and the lower portion is caught by the bent portion of the link member 16.

The first coupling hole 25 and the second coupling hole 26 are also formed on the planar portion 21 of the first support member 20, and the thread 27a is formed. This is for selectively engaging the engaging projection 27. The locking protrusion 27 is also formed with a thread 27a that can be coupled with a thread formed in each of the coupling holes 25 and 26. The locking protrusion 27 is coupled to any one of the coupling holes 25 and 26 so that the door may be opened at a right angle or at a maximum opening angle of 135 ° as in the embodiment of the present invention. This is to prevent the door 5 may be damaged if the door 5 is opened at a right angle or more when there is a wall on one side of the storage. The locking protrusion 27 is coupled to the stopper 33 of the second support member 30.

The second rotary shaft 31 protrudes downward to be coupled to the link coupling hole 16a of the link member 16. The fastening hole 32 is coupled to the first rotation shaft 24 as described above. A stopper 33 is formed below the fastening hole 32 to be caught by the locking protrusion 27 to determine the opening angle of the door 5 at a right angle or a maximum opening angle.

The first support member 20 and the second support member 30 are fastening holes 32 formed in the first rotary shaft 24 and the second support member 30 protruding from the flat portion 21 of the first support member. The second support member 30 is coupled to the first support member 20 so as to be rotatable.

The damping device 10 is coupled to the side of the first support member 20. In the damping device 10, the casing 11 formed in a substantially box shape is formed by bending a plate-shaped metal member. This is to prevent the damping device 10 from being damaged by the load and external force of the reservoir because the damping device 10 is installed in the bottom of the reservoir where the reservoir and the door 5 are connected. The casing 11 is often opened at the bottom in order to facilitate replacement, repair and operation of the buffer member 12 or the link member 16.

The planar portion 21 of the first support member 20 is coupled to the upper surface 11a of the casing 11. The first rotating shaft 24 coupled with the fastening hole 32 of the second supporting member 30 and the first coupling hole 25 and the first coupling hole 25 to which the locking protrusion 27 is coupled may be formed on the flat part 21. 2 coupling holes 26 are formed.

In addition, the first supporting member 20 couples the side portion 22 to the side surface 11b of the casing 11 by the coupling portion 23. This first supporting member may be coupled only by the flat portion 21. However, as shown in FIG. 1, since the door 5 is positioned at the upper end of the first support member 20, the side plate 22 may be bent by bending the metal plate to prevent the first support member 20 from sagging by the load. ) And to couple it to the side (11b) of the casing. Side portion 22 according to an embodiment of the present invention has a portion between the bolts and some of the welded in between, but the joining method may be any.

The damping device 10 and the first support member 20 each have a flat portion 21 and a coupling portion 23 of the first support member 20 on the face 11a and side 11b of the casing 11. It is provided to be coupled. Of course, since the coupling portion 23 is a sag prevention structure, only the flat portion 21 and the upper surface 11a may be coupled.

On the other hand, the damping device 10 and the second support member 30 is coupled so that the link coupling hole 16a of the link member and the second rotation shaft 31 of the second support member 30 are rotatable. In addition, the casing 11 and the first support member 20 are fixed to the cabinet (not shown) of the reservoir, respectively, but the second support member 30 and the first rotary shaft 24 of the first support member 20 and It is coupled to the link coupling hole (16a) of the link member and coupled to the door (5) is provided to be rotatable relative to the cabinet (not shown).

Figure 3 is a perspective view showing the interior of the automatic door opening and closing device according to an embodiment of the present invention. Both ends of the shock absorbing member 12 are fixed to the inside of the casing 11 to have a predetermined angle. However, one end of the buffer member 12 is coupled to the piston 14 in the first coupling portion 13 so as to reciprocate. The shock absorbing member 12 according to the embodiment of the present invention uses a gas spring, which is provided with a gas layer and an oil layer therein so as to reduce the shock and to close the door 5 smoothly by their restoring force. . Gas spring according to an embodiment of the present invention is not provided with a spring, a compensator (compensator) containing a gas there is almost no noise.

The piston 14 is a metal rod provided with a sealing member (not shown) at the end to pressurize / depress the gas layer and the oil layer provided inside the buffer member 12. The first end of the piston 14 is engaged with the shock absorbing member 12 as described above. The second end is fixed with one end of the link member 16. It will mainly use rivets, etc., and it will be firmly fixed to prevent them from moving together. This place is called the second coupling part 15 for convenience.

One end of the link member 16 is coupled to the second end of the piston 14, and the other end of the link member 16 is formed with a link coupling hole 16a to be rotatably coupled to the second rotation shaft 31 of the second support member 30. do. The link member 16 is made of a metal material and corresponds to the distance between the first rotary shaft 24 and the second rotary shaft 31 near the second rotary shaft 31 so that the door 5 can be rotated by 90 ° or more. It is provided bent at a predetermined angle by a distance. The bent portion of the link member 16 is caught by the lower end of the first rotary shaft 24 to prevent the door 5 from opening anymore. The door 5 of the reservoir according to the embodiment of the present invention is provided to open up to 135 °. However, this is a value that can vary depending on the design of the product.

In the vicinity of the engaging portion 23, a support plate 17 connecting both sides of the casing 11 is provided. The support plate 17 is bent to the casing 11 by bending a band-shaped metal plate to prevent the casing 11 from being opened and to reinforce strength. In addition, the support plate 17 is formed with an adjustment member coupling hole 17a. This is to combine the adjustment member 18 that can adjust the height in order to level the height of the bottom of the reservoir when installing the reservoir.

The adjusting member 18 is a kind of bolt having a flat head and is coupled to the adjusting member coupling hole 17a, which is also threaded, to adjust the height according to the rotation speed. The support plate 17 according to the embodiment of the present invention is provided with two adjusting member coupling holes 17a to enable the automatic opening and closing device of the storage door to be used for both the left and right doors of the double door storage.

Figure 4 is an exploded perspective view showing a buffer member of the automatic door opening and closing device according to an embodiment of the present invention. The shock absorbing member according to the present invention includes a cylinder 12a. One end of the cylinder 12a is provided with a cap member 12b for blocking the leakage of gas and oil provided therein. The other end is provided with a first sealing member 12c through which the piston 14 can penetrate while reciprocating, but does not leak gas and oil provided therein. Inside the cylinder 12a, a fluid layer of two layers, an oil layer and a gas layer, is formed, which are partitioned off by the second sealing member 12d to prevent mixing.

One end of the cylinder 12a is inserted so that the piston 14 is rotatable inside the cylinder 12a, and the piston 14 is rotatably fitted in the hole provided in the first sealing member 12c. The piston 12a side end of the piston 14 is provided with a piston end 14a to compress the oil layer and gas layer filled in the cylinder 12a or to retract the piston 14 by them. Both the cap member 12b and the first sealing member 12c are provided to fit the inner diameter of the cylinder 12a so as to prevent oil or gas from flowing out, and so is the piston end 14a.

While the cap member 12b and the first sealing member 12c do not move at both ends of the cylinder 12a, the piston end 14a and the second sealing member 12d have a cylinder 12a depending on the pressure of the oil layer and the gas layer. ) It is provided to move the inside in both directions. According to an exemplary embodiment of the present invention, an oil layer is provided between the piston end 14a and the second sealing member 12d, and a gas layer is provided between the second sealing member 12d and the cap member 12b, but in that order. May change.

In the common gas spring, nitrogen gas is mainly used in the gas layer, but in the embodiment according to the present invention, unlike the prior art, the compressed nitrogen gas can be operated with a sufficient moving distance without using an elastic member such as a spring or a compensator. Use

5, 6, 7, and 8 will be described the operation and effect of the automatic door opening and closing device according to an embodiment of the present invention and the storage using the same.

Figure 5 shows the operating state of the automatic door opening and closing device when the door is opened at an angle smaller than the right angle, it shows the case opened about 60 degrees. Compared to the case of FIG. 3 showing the state in which the door 5 is closed, it can be seen that the piston 14 is inserted into the shock absorbing member 12 to some extent to pressurize the shock absorbing member 12. That is, when the door 5 is closed, the piston 14 will not press the buffer member 12 at all. However, when the door 5 starts to open, the piston 14 is inserted into the shock absorbing member 12 by the link member 16 which rotates together with the second support member 30 connected to the door 5. Oil and gas, which are buffer materials (not shown), are compressed.

At this time, the angle θ formed by the second coupling portion 15, the first rotation shaft 24, and the second rotation shaft 31, which is a connection portion between the link member 16 and the piston 14, is greater than 180 °. . At this time, when the user stops the force applied to the door 5, the door 5 is automatically closed by the force in the closing direction by the restoring force of the buffer material provided in the buffer member 12.

Figure 6 shows the operating state of the automatic door opening and closing device when the door is opened at a right angle. As the door 5 is opened, the shock absorbing member 12 which has started to be compressed is compressed to the maximum by the piston 14. In addition, the angle θ formed by the second coupling part 15, the first rotational shaft 24, and the second rotational shaft 31 forms 180 °. That is, it is located in a straight line at three points, the door is in a pause state. This is because the forces acting on the members are equal to each other and canceled out.

The buffer member 12 compressed as much as possible is restored when the door 5 moves in one direction so that the second coupling part 15, the first rotating shaft 24, and the second rotating shaft 31 are out of a straight line state. Due to the nature of the intended to open the door 5 or to close the door (5). At this time, the opening angle of the door 5 varies depending on the design angle, such as the angle at which the buffer member 12 is fixed to the casing 11 and the size and arrangement of other members, but stops at approximately right angle or about 108 °.

Figure 7 shows the operating state of the automatic door opening and closing device when the door is opened larger than approximately right angle and smaller than the maximum opening angle. This is a case where the angle θ formed by the second engaging portion 15, the first rotational shaft 24, and the second rotational shaft 31 in which the door 5 is in a pause state passes by 180 °. In this case, the piston 14 is pushed to the left side of FIG. 7 by the restoring force of the buffer member 12. The link member 16 connected thereto also rotates according to the pushing motion of the piston 14, and the door 5 is maximized by the rotation of the door 5 and the second supporting member 30 connected to the link member 16. It will open automatically to the opening angle.

The maximum opening angle of the door 5 according to the embodiment of the present invention is about 135 ° but this is a changeable value. The maximum opening angle may be adjusted to 90 ° or 135 ° depending on which position of the locking projection 27 of FIG. 2 is coupled to the first coupling hole 25 or the second coupling hole 26. In addition, the opening angle of the door 5 can be freely adjusted according to the positions at which the coupling holes 25 and 26 are formed. The locking protrusion 27 is formed with the stopper 33 of the second support member 30. As described above, the structure is coupled to support the door so that it is no longer opened.

At this time, the angle θ formed by the second coupling part 15, the first rotational shaft 24, and the second rotational shaft 31 is an obtuse angle between 135 ° and 180 ° according to the embodiment of the present invention. In this case, the door 5 is a force acting in the opening direction at the maximum opening angle.

Figure 8 shows the operating state of the automatic door opening and closing device when the door is opened at the maximum opening angle. When the door 5 is opened at the maximum angle, the shock absorbing member 12 is in a state in which the compression force is zero as in the case where the door 5 is closed. Thus, the piston 14 is exposed to the outside of the buffer member 12 to the maximum. In addition, the maximum opening angle is possible only when the stopper 33 of the second supporting member 30 and the engaging protrusion 27 selectively coupled to the second coupling hole 26 are caught by each other. At this time, the angle formed by the second coupling portion 15, the first rotating shaft 24 and the second rotating shaft 31 is an obtuse angle larger than the right angle and smaller than 180 °.

In addition, since the door 5 is opened and closed by compression and restoration of the gas layer and the oil layer inside the buffer member, the door 5 is operated very smoothly and without noise. In addition, the door is always closed correctly because it is compressed or restored to the correct position. Thus, the loss of cold air that can occur due to the door closing less is prevented.

The automatic opening and closing device of the door according to the embodiment of the present invention and the storage device to which the same is applied are simple and robust, and the door is opened and closed smoothly by a small force, especially in a predetermined angle section. This has the effect of increasing satisfaction.

In addition, the automatic opening and closing device of the door according to the embodiment of the present invention and the storage using the same as the shock absorbing member using a gas spring does not generate noise has a very quiet effect.

In addition, the automatic opening and closing device of the storage door according to an embodiment of the present invention can be accurately opened and closed to prevent unnecessary cold air loss caused by the door is less closed has the effect of improving efficiency.

Claims (30)

A damping device comprising a cabinet, a door hinged to an opening of the cabinet, a first rotating shaft provided to rotatably couple the door to the cabinet, and a casing that automatically opens and closes the door to form an exterior. And a damping device having a second rotating shaft for rotatably connecting the damping device and the door so that the damping device has an automatic opening and closing function according to the degree of opening and closing of the door. A buffer member and a link member; One end of the link member is coupled to the shock absorbing member, and the other end is connected to the second rotation shaft. The first support member is coupled to one surface of the casing, the first rotation shaft is provided on one side of the first support member, The first support member is provided with a bent plate-like member is coupled to the upper surface of the casing, the other surface is coupled to the side of the casing to prevent the first support member from sagging by the load of the door Automatic opening and closing device of the door.  2. The automatic opening and closing device for a door according to claim 1, wherein the casing has at least three surfaces to protect the damping device from external force. The door of claim 1, wherein the link member is bent from the other end by a length corresponding to a length between the first rotation shaft and the second rotation shaft to open the door at an angle greater than a right angle. Automatic switchgear. delete delete The method of claim 1, wherein the automatic opening and closing device of the door further comprises a second support member, the second support member is coupled to be rotatable with one end of the link member is formed with the second rotating shaft on one side, A fastening hole is formed at the side, the automatic opening and closing device of the door, characterized in that coupled to the first rotatable shaft. The method of claim 6, wherein the first support member is engaged with at least one side of the second support member to adjust the opening angle of the door near the first rotating shaft, at least one or more couplings formed to engage A locking protrusion having a hole, the locking protrusion coupled to the first coupling hole is for opening the door at an angle greater than the right angle, and the locking protrusion coupled to the second coupling hole may be selectively formed to open the door at a right angle. Automatic opening and closing of the door, characterized in that formed for. The stopper of claim 7, wherein a stopper is formed near the fastening hole of the second support member so as to be caught by a locking protrusion selectively coupled to the first coupling hole or the second coupling hole to adjust the opening angle of the door. Automatic opening and closing of the door, characterized in that. 3. The automatic opening and closing device of a door according to claim 2, wherein a support plate is formed on a bottom surface of the casing so that an adjustment member coupling hole is formed to engage an adjustment member for adjusting an installation height of the cabinet. The method of claim 1, wherein the buffer member is a cylinder for injecting oil and gas, a piston for compressing and relaxing the oil and gas, a cap member provided to close one end of the cylinder, and And a first sealing member provided at the other end of the cylinder so as to penetrate the piston but not leaking the oil and gas, and a second sealing member provided inside the cylinder to separate the oil and gas. Automatic opening and closing device of the door. A cabinet comprising a cabinet, a door hinged to an opening of the cabinet, a first rotating shaft provided to rotatably hinge the cabinet and the door, and a buffer member for automatically opening and closing the door. , The reservoir includes a second rotating shaft for rotatably connecting the buffer member and the door; A damping device having one end coupled to the buffer member and the other end including a link member connected to the second rotation shaft; The second rotating shaft is formed on one side so as to be rotatably coupled with one end of the link member, and the other side includes a second support member formed with a fastening hole to be rotatably coupled with the first rotating shaft, The damping device further includes a casing surrounding the damping device on at least three surfaces to protect the damping device from external force, wherein a first support member is coupled to one surface of the casing, and one side of the first support member. The first rotating shaft is formed, The first support member is provided with a bent plate-like member is coupled to the upper surface of the casing, the other surface is coupled to the side of the casing to prevent the first support member from sagging by the load of the door A reservoir having an automatic opening and closing device for a door. The door of claim 11, wherein the link member is bent from the other end by a length corresponding to a length between the first rotation shaft and the second rotation shaft to open the door at an angle greater than a right angle. Reservoir with automatic switchgear. delete 12. The method of claim 11, wherein the first support member is provided with a bent plate-like member is coupled to one side of the upper surface of the casing, the other side is coupled to the side of the casing to the first support member by the load of the door A storage provided with an automatic opening and closing device of the door, characterized in that to prevent sagging. 12. The method of claim 11, wherein the first support member is provided with a locking projection that can be coupled to the two holes are formed, the locking projection is selectively coupled to any one of the two holes to open the door at different angles Reservoir having an automatic opening and closing device of the door, characterized in that to enable. The support plate of claim 11, wherein the casing has a bottom surface open, and a support plate having a coupling hole formed therein so as to couple an adjustment member for adjusting an installation height of the cabinet of the storage compartment while reinforcing the strength of the casing. A reservoir having an automatic opening and closing device for a door, characterized in that it is installed. 12. The method of claim 11, wherein the buffer member is a cylinder for injecting oil and gas, a cap member provided to close one end of the cylinder, and is provided inside the cylinder so as to separate the oil and gas A first sealing member, a piston for compressing and relaxing the oil and gas, and a second sealing member provided at the other end of the cylinder such that the piston penetrates but the oil and gas cannot leak. A reservoir having an automatic opening and closing device for a door. A door having a cabinet, a door hinged to an opening of the cabinet, a first rotating shaft provided to rotatably hinge the cabinet and the door, and a damping device for automatically opening and closing the door. In the opening and closing device, the automatic opening and closing device of the door has a second rotary shaft for rotatably connecting the damping device and the door, the damping device comprises a casing for forming an appearance; A shock absorbing member including a piston; Includes; Link member for connecting the piston and the second rotary shaft, A first support member is coupled to one surface of the casing, the first rotation shaft is provided at one side of the first support member, and the first support member is provided as a bent plate member, and one surface is formed on the upper surface of the casing. The other surface is coupled to the side of the casing to prevent the first support member from sagging by the load of the door, And the link member is bent by a length corresponding to the length between the first and second rotary shafts from one end to open the door at an angle greater than a right angle. 19. The method of claim 18, wherein the first support member is coupled to the cabinet side, the first rotation shaft is formed on one side of the first support member, the door side further comprises a second support member, the second support member Is the second rotary shaft is formed on one side is coupled to rotatable with one end of the link member, the other side is a fastening hole is formed is coupled to the first rotary shaft rotatable, characterized in that coupled to the rotatable. 20. The method of claim 19, wherein the first support member is provided with a locking projection engaging with one side of the second support member in order to adjust the opening angle of the door near the first rotating shaft, the first locking projection is more than the right angle to the door It is for opening at a large angle, and the second locking projection which can be selectively installed therein is formed to open the door at an angle different from the door opening angle by the first locking projection. 21. The method of claim 20, wherein the buffer member is a cylinder for injecting oil and gas, a cap member provided to close one end of the cylinder, and the inside provided in the cylinder to separate the oil and gas A sealing member, the piston provided to compress or relax the oil and gas, and a second sealing member provided at the other end of the cylinder such that the piston penetrates but the oil and gas cannot leak. Automatic opening and closing of the door, characterized in that. A cabinet comprising a cabinet, a door hinged to an opening of the cabinet, a first rotation shaft provided to rotatably hinge the cabinet and the door, and a damping device for automatically opening and closing the door. The reservoir includes a damping device and a second rotating shaft for rotatably connecting the door, wherein the damping device comprises: a casing for forming an appearance; A buffer member; And a link member connecting between the buffer member and the second rotation shaft. A first support member is coupled to one surface of the casing, the first rotation shaft is provided at one side of the first support member, and the first support member is provided as a bent plate member, and one surface is formed on the upper surface of the casing. The other surface is coupled to the side of the casing to prevent the first support member from sagging by the load of the door, When the door is opened at a right angle and an end portion of the link member connected to the second rotating shaft, the first rotating shaft, and the buffer member is positioned on a straight line, the door is paused and the door is at an angle greater than the right angle. When the angle between the second rotary shaft, the first rotary shaft, and the end of the link member connected to the buffer member becomes an obtuse angle, the door is applied with a force in the opening direction, and the door is opened at an angle smaller than the right angle. And the door is operated in a closing direction when an angle formed by an end of the second rotating shaft and the end of the link member connected to the first rotating shaft and the buffer member is greater than 180 °. 23. The method of claim 22, wherein the buffer member is a cylinder, a buffer material such as oil or gas provided in the cylinder, and one end pressurizes or decompressed the buffer material while the other end is further connected to the link member When the door is opened, one end of the piston is advanced to the inside of the cylinder of the buffer member to press the buffer material, and when the door is opened at a right angle and paused to press the buffer material to the maximum When the door is opened at an angle smaller than a right angle or when the door is opened at a right angle or more, the piston retracts from the cylinder by a restoring force of the cushioning material so that the door automatically opens and closes automatically. Storage. 23. The apparatus of claim 22, wherein the link member is bent by a distance from the second rotary shaft to the first rotary shaft at a point connected with the second rotary shaft to open the door at an angle greater than a right angle and the door is at a maximum angle. And the bent portion is caught by the first axis of rotation when opened. 23. The method of claim 22, wherein the damping device further comprises a casing having at least three surfaces, one surface of the casing is coupled to the first support member having a first rotating shaft, the first supporting member is formed with a second rotating shaft The second support member is coupled, the second support member is a reservoir, characterized in that the fastening hole is formed and the fastening hole and the first rotating shaft is rotatably coupled. 26. The reservoir according to claim 25, wherein the bottom of the casing is provided with a support plate on which a coupling hole is formed so as to couple an adjustment member for adjusting the installation height of the cabinet. A cabinet door having a cabinet, a door hinged to an opening of the cabinet, a first rotating shaft provided to rotatably hinge the cabinet and the door, and a damping device for automatically opening and closing the door. In the automatic opening and closing device, the automatic opening and closing device of the storage door is installed at a right angle to the door on the upper or lower side of the cabinet to be connected to the door and the second rotary shaft fixed to the door and rotatably coupled to the damping device A damping device comprising a casing, a buffer member, a link member, and a piston; A first support member is coupled to one surface of the casing, the first rotation shaft is provided at one side of the first support member, and the first support member is provided as a bent plate member, and one surface is formed on the upper surface of the casing. The other surface is coupled to the side of the casing to prevent the first support member from sagging by the load of the door, The first end of the piston is coupled to the buffer member, the second end is coupled to the link member, one end of the link member is coupled to the second end of the piston and the other end is coupled to the second rotary shaft Automatic opening and closing device of the storage door, characterized in that. 28. The method of claim 27, wherein the link member is bent from the other end by a distance from the second rotation axis to the first rotation shaft to open the door at an angle greater than a right angle so that the bending is performed when the door is opened at the maximum angle. Automatic opening and closing device of the storage door, characterized in that the first hooked to the rotating shaft. 28. The system of claim 27, wherein the damping device further comprises a casing surrounding the damping device on at least three sides to protect the damping device from external forces, wherein the shock absorbing member is fixed to the casing side, and the piston is a shock absorbing member. Automatic opening and closing device of the storage door, characterized in that installed on the opposite side of the first rotary shaft. 28. The automatic opening and closing device of a storage door of claim 27, wherein the buffer member is a gas spring including an oil layer and a gas layer therein.

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