Door opening and closing device and refrigerator including the same

Abstract

This utility model discloses a door opening and closing device and a refrigerator including the same. The door opening and closing device includes a hinge rotation module, a conveyor belt, and a door pushing module. The rotation module includes a motor, a reduction mechanism, an output component, and a switching mechanism. The door pushing module includes a push rod and a drive component. One end of the conveyor belt is drivenly connected to the drive component, and the other end of the conveyor belt is directly or indirectly drivenly connected to the motor. The motor is drivenly connected to the reduction mechanism. The switching mechanism drives the output component to move between a position drivenly connected to the reduction mechanism and a position disengaged from the reduction mechanism. The drive component is drivenly connected to the push rod. This utility model achieves lower cost, reduces the size and space occupied by the door opening and closing device, and improves adaptability to refrigerators of different sizes.

Description

Technical Field

[0001] This utility model relates to a door opening and closing device and a refrigerator including the same. Background Technology

[0002] Currently, for some refrigerators, such as those with large capacity and size, opening the door requires a lot of force, making it increasingly difficult for users to manually open and close the door. Automatic door opening and closing technology has been applied to refrigerators to facilitate the opening and closing of the door.

[0003] Existing automatic door opening devices still have many problems. These devices require complex structures to perform multiple steps of opening, such as using multiple motors for different actions, resulting in very high costs. Other devices are designed as a single unit; because the force is applied at different locations within the refrigerator, the device is forced to become larger to fit the refrigerator's dimensions, thus occupying a significant amount of top space. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of poor performance of existing fans and to provide a fan and a range hood including the fan.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A door opening and closing device for a refrigerator includes a hinge rotation module, a conveyor belt, and a door pushing module. The rotation module includes a motor, a reduction mechanism, an output component, and a switching mechanism. The door pushing module includes a push rod and a drive component. One end of the conveyor belt is drivenly connected to the drive component, and the other end of the conveyor belt is directly or indirectly drivenly connected to the motor. The motor is drivenly connected to the reduction mechanism. The switching mechanism drives the output component to move between a position drivenly connected to the reduction mechanism and a position disengaged from the reduction mechanism. The drive component is drivenly connected to the push rod.

[0007] In use, the motor first drives the conveyor belt, which in turn drives the push rod to open the door. Then, the switching mechanism connects the output component with the deceleration mechanism, thereby driving the rotation of the output component, which in turn drives the rotation of the door.

[0008] This solution utilizes two separate modules: a hinge rotation module and a sliding door module, both powered by the same motor in the hinge rotation module. The hinge rotation module and sliding door module can be installed independently, connected by a conveyor belt to transmit power. Regardless of changes in door size or the installation position of the hinge rotation module and sliding door module, no adjustments are required; only the length of the conveyor belt needs to be changed to achieve the desired transmission. Therefore, this solution achieves lower costs, reduces the size and space occupied by the door opening and closing mechanism, and improves adaptability to refrigerators of different sizes.

[0009] Preferably, the switching mechanism includes a body, a movable rod, and a top block connected to the movable rod. The movable rod moves horizontally relative to the body and drives the top block to move, and the top block drives the output component to move during the movement. The output component can be moved conveniently and reliably using the movable rod and the top block, and its structure is relatively simple, and the reciprocating motion is not prone to failure.

[0010] Preferably, the top block has an inclined contact surface, the moving direction of the moving rod is perpendicular to the moving direction of the output component, and at least a portion of the output component moves along the contact surface, thus driving the movement of the output component. This allows the output component to be smoothly raised or lowered, thereby reducing the impact of connection and disengagement between the output component and the reduction mechanism, increasing the service life of the structure, and reducing malfunctions.

[0011] Preferably, the output component includes an output shaft and an output unit, the bottom of which moves along the contact surface to achieve transmission connection or disengagement with the reduction mechanism. Thus, the output unit not only transmits motion but also drives the movement of the entire output component, thereby simplifying the structure of the output component.

[0012] Preferably, the reduction mechanism includes a plurality of reduction gears, and the conveyor belt is drive-connected to a fixed shaft relatively fixed to one of the reduction gears. This ensures that the conveyor belt and the reduction gears can drive synchronously, thereby guaranteeing the accurate movement of the push rod on the other side of the conveyor belt.

[0013] Preferably, the fixed shaft includes, along the axial direction, a fixed end, an engaging end, and a blocking end, wherein the radial dimension of the blocking end is larger than that of the engaging end. The inner side of the conveyor belt engages with the engaging end to achieve transmission, and the fixed end is fixedly fitted with the reduction gear. The blocking end and the reduction gear can limit movement on the upper and lower sides of the conveyor belt, while the engaging end enables motion transmission and ensures that the conveyor belt does not slip.

[0014] Preferably, the driving component is a gear, and a rack is provided on one side of the push rod, with the driving component meshing with the push rod. The engagement of the gear and rack ensures sufficient output thrust is applied to the door body. Furthermore, the engagement of the gear and rack is reliable and not easily damaged.

[0015] Preferably, the deceleration mechanism includes a plurality of reduction gears, and both the output component and the conveyor belt are drively connected to the reduction gears located at the end of the transmission. This ensures that both the conveyor belt and the output component can obtain maximum torque or thrust, guaranteeing the opening of the door.

[0016] A refrigerator includes a main body, a cabinet, and a hinge mechanism connected to the door. The refrigerator also includes a door opening and closing device, wherein the door opening and closing device is disposed in the cabinet, the output component is connected to the hinge mechanism, and the moving direction of the push rod is oriented towards the door.

[0017] Preferably, the hinge rotation module is located above the hinge mechanism, and the hinge rotation module and the push-door module are located on opposite sides of the door body. This allows the push-door module to provide maximum torque relative to the hinge mechanism, and the torque of the output component ensures the door can be opened.

[0018] The positive and progressive effects of this utility model are as follows: it achieves lower cost, reduces the size and space occupied by the door opening and closing device, and improves adaptability to refrigerators of different sizes. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the top of the refrigerator according to a preferred embodiment of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the door opening and closing device according to a preferred embodiment of the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of the hinge rotation module of a preferred embodiment of the present invention.

[0022] Figure 4 This is a top view of the door opening and closing device according to a preferred embodiment of the present invention.

[0023] Figure 5 This is a three-dimensional structural diagram of the switching mechanism of a preferred embodiment of the present invention.

[0024] Figure 6 This is a three-dimensional structural diagram of the push-door module of a preferred embodiment of the present invention.

[0025] Figure 7This is a three-dimensional structural diagram of the fixed shaft according to a preferred embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures

[0027] Hinge Rotation Module 100

[0028] Motor 110

[0029] Speed ​​reduction mechanism 120

[0030] Reduction Gear 121

[0031] Fixed shaft 122

[0032] Fixed end 122a

[0033] Engaging end 122b

[0034] Blocking end 122c

[0035] Output component 130

[0036] Output unit 131

[0037] Output shaft 132

[0038] Switching mechanism 140

[0039] Ontology 141

[0040] Moving rod 142

[0041] Top block 143

[0042] Spring 144

[0043] 200 push door modules

[0044] Drive component 210

[0045] Putter 220

[0046] Conveyor belt 300

[0047] Hinge mechanism 400

[0048] Door body 500

[0049] Cabinet 600 Detailed Implementation

[0050] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0051] like Figure 1 -like Figure 7As shown, this embodiment of a door opening and closing device is used in a refrigerator. The device includes a hinge rotation module 100, a conveyor belt 300, and a door pushing module 200. The rotation module includes a motor 110, a reduction mechanism 120, an output component 130, and a switching mechanism 140. The door pushing module 200 includes a push rod 220 and a drive component 210. One end of the conveyor belt 300 is connected to the drive component 210, and the other end is directly or indirectly connected to the motor 110. The motor 110 is connected to the reduction mechanism 120. The switching mechanism 140 drives the output component 130 to move between a position connected to the reduction mechanism 120 and a position disconnected from the reduction mechanism 120. The drive component 210 is connected to the push rod 220. The conveyor belt 300 can be a belt, and the motor 110 can be a flattened motor.

[0052] In use, the motor 110 first drives the conveyor belt 300, which in turn drives the push rod 220 to push open the door. Then, the switching mechanism 140 connects the output component 130 with the deceleration mechanism 120, thereby driving the output component 130 to rotate, which in turn drives the door to rotate.

[0053] This solution utilizes two separate modules: a hinge rotation module 100 and a door pushing module 200, both powered by the same motor 110 of the hinge rotation module 100. The hinge rotation module 100 and the door pushing module 200 can be installed independently, connected by a conveyor belt 300. Regardless of changes in door size or installation position, the hinge rotation module 100 and the door pushing module 200 themselves require no adjustment; only the length of the conveyor belt 300 needs to be changed to achieve transmission. Therefore, this solution achieves lower costs, reduces the size and space occupied by the door opening and closing mechanism, and improves adaptability to refrigerators of different sizes.

[0054] like Figure 3 and Figure 5 As shown, in a preferred embodiment, the switching mechanism 140 includes a body 141, a moving rod 142, and a top block 143 connected to the moving rod 142. The moving rod 142 moves horizontally relative to the body 141, driving the top block 143 to move. The top block 143, in turn, drives the output component 130 to move. The moving rod 142 and the top block 143 allow for convenient and reliable movement of the output component 130, and the structure itself is relatively simple, with reciprocating motion less prone to failure. In this embodiment, the switching mechanism 140 is preferably a solenoid valve, with the moving rod 142 being the solenoid valve rod and the body 141 being the solenoid valve body. The moving rod 142 is moved by electromagnetic force. A spring 144 can be provided between the moving rod 142 and the body 141 to achieve a springback mechanism.

[0055] like Figure 3 and Figure 5 As shown, in a preferred embodiment, the top block 143 has an inclined contact surface, the moving direction of the moving rod 142 is perpendicular to the moving direction of the output component 130, and at least a portion of the output component 130 moves along the contact surface, thus driving the movement of the output component 130. This allows the output component 130 to be smoothly raised or lowered, thereby reducing the impact of connection and disengagement between the output component 130 and the reduction mechanism 120, increasing the service life of the structure, and reducing malfunctions.

[0056] like Figure 3 and Figure 5 As shown, in a preferred embodiment, the output component 130 includes an output shaft 132 and an output unit 131. The bottom of the output unit 131 moves along the contact surface to achieve transmission connection or disengagement with the reduction mechanism 120. Thus, the output unit 131 not only transmits motion but also drives the movement of the entire output component 130, thereby simplifying the structure of the output component 130.

[0057] like Figure 1 -like Figure 7 As shown, in a preferred embodiment, the reduction mechanism 120 includes a plurality of reduction gears 121, and the conveyor belt 300 is connected to a fixed shaft 122 that is fixed relative to one of the reduction gears 121. This ensures that the conveyor belt 300 and the reduction gears 121 can be driven synchronously, thereby ensuring the accurate movement of the push rod 220 on the other side of the conveyor belt 300.

[0058] like Figure 7 As shown, in a preferred embodiment, the fixed shaft 122 includes, along the axial direction, a fixed end 122a, an engaging end 122b, and a blocking end 122c. The radial dimension of the blocking end 122c is larger than that of the engaging end 122b. The inner side of the conveyor belt 300 engages with the engaging end 122b to achieve transmission. The fixed end 122a is fixedly fitted with the reduction gear 121. The blocking end 122c and the reduction gear 121 can limit movement on the upper and lower sides of the conveyor belt 300, while the engaging end 122b transmits motion and ensures that the conveyor belt 300 does not slip.

[0059] like Figure 4 and Figure 6 As shown, in a preferred embodiment, the drive component 210 is a gear, and a rack is provided on one side of the push rod 220. The drive component 210 and the push rod 220 mesh. The engagement of the gear and rack ensures that sufficient output thrust is applied to the door body 500. Furthermore, the engagement of the gear and rack is reliable and not easily damaged. The push rod 220 can slide via the slide rail 230.

[0060] like Figure 1 -like Figure 7 As shown, in a preferred embodiment, the deceleration mechanism 120 includes a plurality of reduction gears 121, and the output component 130 and the conveyor belt 300 are both connected to the reduction gears 121 located at the end of the transmission. This ensures that both the conveyor belt 300 and the output component 130 can obtain maximum torque or thrust, thus ensuring the opening of the door 500.

[0061] like Figure 1 -like Figure 7 As shown, this embodiment discloses a refrigerator, including a main body 141, a cabinet 600, and a hinge mechanism 400 connected to the door 500. The refrigerator also includes an opening and closing device, wherein the opening and closing device is disposed in the cabinet 600, the output component 130 is connected to the hinge mechanism 400, and the moving direction of the push rod 220 is set towards the door.

[0062] like Figure 1 and Figure 2 As shown, in this embodiment, the hinge rotation module 100 is located above the hinge mechanism 400, and the hinge rotation module 100 and the push door module 200 are located on opposite sides of the door body 500. This allows the push door module 200 to provide the maximum torque relative to the hinge mechanism 400, and combined with the torque of the output component 130, it ensures the opening of the door body 500.

[0063] like Figures 1-7 As shown, the reduction gear 121 and output unit 131 in this embodiment do not show their teeth, but gear meshing is a conventional technology and does not affect the understanding of the solution.

[0064] When the refrigerator door needs to be opened in this embodiment, the motor 110 starts, and after being reduced in speed by the reduction mechanism 120, the power is transmitted to the door push module 200 via the conveyor belt 300. The push rod 220 pushes out and opens the door 500. During this process, the output unit 131 disengages from the reduction gear 121, and the power is not transmitted to the hinge mechanism 400. The motor 110 uses all its power to push the door open until the door 500 is opened. After the door 500 is opened, the switching mechanism 140 starts, the top block 143 pushes out, and lifts the output unit 131 so that it engages with the reduction gear 121. At this time, the motor 110 rotates, which drives the push rod 220 to translate and also drives the hinge mechanism 400 to rotate. However, since the speed of the hinge rotation is greater than the speed of the push rod 220 pushing out, although the push rod 220 is pushing out, the gap between it and the door 500 is widened and they do not make contact, which is considered no-load operation. The motor uses all its power to rotate the hinge mechanism 400 until the door 500 is opened to its maximum position. Then the switching mechanism 140 switches, the top block 143 moves in the opposite direction, and the output unit 131 falls under the action of gravity and disengages from the reduction gear 121.

[0065] When the door closes, the switching mechanism 140 is activated, the top block 143 extends, and the output unit 131 is lifted to engage with the reduction gear 121. The motor 110 rotates in the opposite direction, causing the door 500 to rotate and close, and the push rod 220 to retract without load. After the door 500 is fully closed, the switching mechanism 140 reverses its action, the top block 143 moves in the opposite direction, and the output unit 131 disengages. The motor 110 continues to rotate, causing the push rod 220 to reset.

[0066] This invention achieves lower cost, reduces the size and space occupied by the door opening and closing device, and improves adaptability to refrigerators of different sizes.

[0067] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A door opening and closing device for a refrigerator, characterized in that, The door opening and closing device includes a hinge rotation module, a conveyor belt, and a door pushing module. The rotation module includes a motor, a reduction mechanism, an output component, and a switching mechanism. The door pushing module includes a push rod and a drive component. One end of the conveyor belt is driven by the drive component, and the other end of the conveyor belt is directly or indirectly driven by the motor. The motor is driven by the reduction mechanism. The switching mechanism drives the output component to move between a position driven by the reduction mechanism and a position disengaged from the reduction mechanism. The drive component is driven by the push rod.

2. The door opening and closing device as described in claim 1, characterized in that, The switching mechanism includes a body, a moving rod, and a top block connected to the moving rod. The moving rod moves horizontally relative to the body and drives the top block to move. The top block drives the output component to move during the movement.

3. The door opening and closing device as described in claim 2, characterized in that, The top block has an inclined contact surface, the moving direction of the moving rod is perpendicular to the moving direction of the output component, and at least a portion of the output component moves along the contact surface and drives the movement of the output component.

4. The door opening and closing device as described in claim 3, characterized in that, The output component includes an output shaft and an output unit. The bottom of the output unit moves along the contact surface to achieve transmission connection or disengagement with the reduction mechanism.

5. The door opening and closing device as described in claim 1, characterized in that, The deceleration mechanism includes a plurality of reduction gears, and the conveyor belt is connected to a fixed shaft that is fixed relative to one of the reduction gears.

6. The door opening and closing device as described in claim 5, characterized in that, The fixed shaft includes a fixed end, a meshing end, and a blocking end in sequence along the axial direction. The radial dimension of the blocking end is larger than that of the meshing end. The inner side of the conveyor belt meshes with the meshing end to achieve transmission. The fixed end is fixedly engaged with the reduction gear.

7. The door opening and closing device as described in claim 1, characterized in that, The driving component is a gear, and a rack is provided on one side of the push rod. The driving component and the push rod mesh with each other.

8. The door opening and closing device as described in claim 1, characterized in that, The deceleration mechanism includes several reduction gears, and the output component and the conveyor belt are both connected to the reduction gears located at the end of the transmission.

9. A refrigerator, comprising a cabinet, a door, and a hinge mechanism connected to the door, characterized in that, The refrigerator further includes a door opening and closing device as described in any one of claims 1-8, wherein the door opening and closing device is disposed on the cabinet, the output component is connected to the hinge mechanism, and the moving direction of the push rod is oriented towards the door.

10. The refrigerator as described in claim 9, characterized in that, The hinge rotation module is located above the hinge mechanism, and the hinge rotation module and the push door module are located on opposite sides of the door body.

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