refrigerator

Abstract

This application provides embodiments relating to the field of home appliance technology, providing a refrigerator including a cabinet, a door, and a door opening / closing device. The door opening / closing device includes a power mechanism, a first transmission mechanism, a second transmission mechanism, a push door mechanism, a turn door mechanism, and a clutch. The clutch connects or separates the second transmission mechanism from the turn door mechanism. The clutch includes a drive gear, a driven gear, a friction element, a push element, a guide assembly, and a drive assembly. The drive gear is drively connected to the second transmission mechanism, and the driven gear is drively connected to the turn door mechanism. One of the drive gear and the driven gear is connected to the friction element, and the other is connected or separated from the friction element. The push element abuts against the friction element. The drive assembly drives the guide assembly to move, thereby pushing the push element to move and abut against the friction element, causing the drive gear to connect or separate from the driven gear. This application has a simple structure and a small overall size. Furthermore, by using the friction element to bear the load during the automatic door opening and closing process of the clutch, the load-bearing capacity of the clutch can be improved.

Description

Technical Field

[0001] This application relates to the field of home appliance technology. More specifically, it relates to a refrigerator. Background Technology

[0002] A refrigerator is a refrigeration device that maintains a constant low temperature; it is also a consumer product that keeps food or other items at a constant low temperature. Existing technology includes refrigerators with automatic door opening and closing mechanisms to improve user convenience and safety.

[0003] Due to factors such as door seal suction, suction aid resistance, and internal / external pressure difference, the force required for the door to open at the moment of opening is relatively large. Currently, refrigerators with automatic door opening and closing typically use a push rod actuator to first push the door open to a certain angle, and then rely on a rotary actuator to drive the rotating shaft to rotate and open the entire door. Due to limited installation space, the driving force of the automatic door opening and closing power source is limited. Therefore, a single drive mechanism is usually used to perform both the pushing and rotating opening operations simultaneously, and a clutch allows the same drive mechanism to control the two operation processes separately.

[0004] However, due to space constraints, the clutch cannot be too large. But since opening the door requires a large torque, the clutch needs to withstand a high load. Therefore, the design and installation requirements for the clutch are increased. Summary of the Invention

[0005] This application provides a refrigerator that can achieve high load on the clutch, and the clutch has a compact structure, occupies little space, and meets the design requirements for automatic door opening and closing.

[0006] In a first aspect, embodiments of this application provide a refrigerator, the refrigerator comprising:

[0007] The container has an internal storage compartment.

[0008] The door is mounted on the box and is used to close the storage room.

[0009] The door opening and closing mechanism is located on the cabinet and connected to the door.

[0010] The door opening and closing mechanism is configured to drive the door body to rotate relative to the cabinet body to open or close the storage compartment;

[0011] The door opening and closing device includes:

[0012] Power mechanism;

[0013] Door opening mechanism;

[0014] Revolving door mechanism;

[0015] A first transmission mechanism is configured to transmit the driving force provided by the power mechanism to the door push mechanism, so that the door push mechanism pushes the door open.

[0016] The second transmission mechanism is configured to transmit the driving force provided by the power mechanism to the rotary door mechanism so that the rotary door mechanism rotates and opens the door.

[0017] The second transmission mechanism includes a clutch, which is configured to connect or disconnect the power mechanism from the rotary door mechanism.

[0018] The clutch includes:

[0019] A drive gear is configured to transmit the driving force in the second transmission mechanism;

[0020] Driven gear, the driven gear is provided with a through hole, and the driven gear is connected to the rotary door mechanism for transmission;

[0021] Friction element, which is located between the driving gear and the driven gear;

[0022] Among them, one of the driving gear and the driven gear is connected to the friction element, and the other has two states with the friction element: a separated state and a connected state;

[0023] A pusher is located on the side of the driven gear away from the friction element;

[0024] In this embodiment, at least one of the pushing member and the friction member is provided with a through hole so that the pushing member and the friction member abut against each other;

[0025] The guide assembly abuts against the pusher component;

[0026] The driver component connects to the guide component;

[0027] The drive assembly is configured to: drive the guide assembly to move along a first direction, so that the guide assembly pushes the pusher to move along a second direction and pushes the friction member to move along the second direction, thereby switching the connection state or the separation state by moving the friction member, so that the drive gear and the driven gear are connected or separated.

[0028] When the door is opened manually, the clutch separates the power mechanism from the revolving door mechanism.

[0029] In this way, by setting a friction element between the driving gear and the driven gear, one of the driving gear and the driven gear is connected to the friction element, and the friction element is detachably connected to the other. A pusher is provided on the other side of the driven gear to abut against the friction element. The driving assembly drives the guide assembly to move in the first direction, so that the guide assembly pushes the pusher to move in the second direction, thereby pushing against the friction element and making the friction element move in the second direction. This achieves the detachable connection of the friction element. The structure is simple and the overall volume is small. Moreover, by having the friction element bear the load during the automatic opening and closing process of the clutch, the load bearing capacity of the clutch can be improved.

[0030] In some embodiments of this application, a locking block is provided on the side of the friction member facing the drive gear, and a locking groove is provided on the side of the drive gear facing the friction member. When the friction member moves along the second direction, the locking block and the locking groove cooperate with each other to connect the friction member with the drive gear.

[0031] In this way, the cooperation between the card block and the card slot can ensure the transmission connection between the friction component and the drive gear.

[0032] In some embodiments of this application, a friction post is provided on the side of the friction member away from the drive gear. The friction post passes through the hole and abuts against the pusher.

[0033] In this way, the friction pins on the friction component make contact with the pushing component, thereby pushing the friction component to move.

[0034] In some embodiments of this application, the pusher is provided with a support groove on the side facing the driven gear, and the friction post is disposed in the support groove and abuts against the bottom wall of the support groove.

[0035] In this way, by setting a retaining groove on the pusher and placing the friction pin in the retaining groove, the stability of the contact between the friction element and the pusher is improved, thereby improving the clutch accuracy.

[0036] In some embodiments of this application, a connecting block is provided on the side of the friction member facing the driven gear, and a connecting groove is provided on the side of the driven gear facing the friction member. When the friction member moves along the second direction, the connecting block and the connecting groove cooperate with each other to connect the friction member with the driven gear.

[0037] In this way, the cooperation between the connecting block and the connecting groove can ensure the connection between the friction component and the driven gear.

[0038] In some embodiments of this application, the pusher is provided with a retaining post on the side facing the driven gear, the retaining post passing through the hole and abutting against the friction member.

[0039] In this way, the friction component and the pushing component are brought into contact by the abutting post set on the pushing component, thereby pushing the friction component to move.

[0040] In some embodiments of this application, the driving gear has a receiving groove on the side facing the driven gear, and the friction element is disposed in the receiving groove.

[0041] In this way, by setting up the receiving groove, the distance between the driving gear and the driven gear can be reduced, the overall volume of the clutch can be reduced, and the weight of the clutch can also be reduced.

[0042] In some embodiments of this application, the clutch further includes a reset member disposed between the friction member and the drive gear, and the reset member is configured to push the friction member so that the friction member moves toward the driven gear in a second direction.

[0043] In this way, by setting the reset component, it can be ensured that when the drive component is not operating, the friction component moves along the second direction and approaches the driven gear, thereby improving the accuracy of clutch disengagement.

[0044] In some embodiments of this application, the guide component includes a shift fork connected to a drive component. The shift fork has a guide surface on the side facing the pusher, and the pusher has a mating surface. The guide surface abuts against the mating surface so that when the shift fork moves in a first direction, the pusher moves in a second direction.

[0045] In this way, the movement in the first direction is converted into movement in the second direction through the cooperation of the guide surface and the mating surface, which facilitates the arrangement of the drive components and helps to reduce the overall thickness of the clutch.

[0046] In some embodiments of this application, the guide assembly includes a positioning plate and a guide plate. The positioning plate is connected to the drive assembly, and the guide plate is movably connected to the positioning plate and abuts against the side of the pusher away from the driven gear. The door opening and closing device is provided with a guide groove, and the side of the guide plate away from the pusher is provided with a guide block. The guide block is movably disposed in the guide groove so that when the positioning plate pushes the guide plate to move in the first direction, the guide plate moves in the second direction.

[0047] In this way, through the cooperation of the guide block and the guide groove, when the positioning plate moves in the first direction, it drives the guide plate to move in the second direction, thereby directly pushing the pusher to move in the second direction, reducing frictional resistance, which makes it easier to reduce the power of the drive assembly, and helps to reduce the overall size and cost of the clutch. Attached Figure Description

[0048] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0049] Figure 1This is a schematic diagram of the structure of a refrigerator provided in an embodiment of this application;

[0050] Figure 2 for Figure 1 A schematic diagram of the door opening and closing mechanism of the refrigerator shown.

[0051] Figure 3 for Figure 2 One of the exploded structural diagrams of the clutch of the door opening and closing device shown;

[0052] Figure 4 for Figure 3 A schematic diagram of the drive gear of the clutch shown.

[0053] Figure 5 for Figure 3 The diagram shows the structure during clutch disengagement.

[0054] Figure 6 for Figure 3 The diagram shows the structure during clutch engagement.

[0055] Figure 7 for Figure 2 The second schematic diagram of the clutch structure of the door opening and closing device shown;

[0056] Figure 8 for Figure 7 One of the exploded structural diagrams of the clutch shown;

[0057] Figure 9 for Figure 7 The second schematic diagram of the exploded structure of the clutch shown;

[0058] Figure 10 for Figure 7 The diagram shows the structure during clutch disengagement.

[0059] Figure 11 for Figure 7 The diagram shows the structure during clutch engagement.

[0060] Explanation of reference numerals in the attached figures:

[0061] 100-Clutch; 10-Drive gear; 11-Slot; 12-Accommodation slot; 13-Connecting post; 131-Anti-rotation slot; 20-Driven gear; 21-Through hole; 22-Connecting slot; 23-Rotating shaft; 24-Allowing slot; 30-Friction component; 31-Slot block; 32-Friction post; 33-Connecting block; 34-Connecting hole; 341-Anti-rotation block; 35-Reset slot; 40-Pushing component; 41-Supporting slot; 42-Supporting post; 43-Rotation hole; 44-Mating surface; 50-Guide assembly; 51-Shift fork ; 511-Guide surface; 52-Positioning plate; 53-Guide plate; 531-Guide block; 532-Allowing hole; 60-Drive assembly; 61-Drive shaft; 62-Electromagnet; 63-Drive reset component; 70-Reset component; 80-Pad; 81-Guide post; 200-Door opening and closing device; 201-Power mechanism; 202-First transmission mechanism; 203-Second transmission mechanism; 204-Push door mechanism; 205-Turn door mechanism; 206-Guide groove; 300-Refrigerator; 301-Box body; 302-Door body. Detailed Implementation

[0062] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0063] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0064] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0065] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0066] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0067] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0068] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0069] A refrigerator is a refrigeration device that maintains a constant low temperature; it is also a consumer product that keeps food or other items at a constant low temperature. Existing technology includes refrigerators with automatic door opening and closing mechanisms to improve user convenience and safety.

[0070] Due to factors such as door seal suction, suction aid resistance, and internal / external pressure difference, the force required for the door to open at the moment of opening is relatively large. Currently, refrigerators with automatic door opening and closing typically use a push rod actuator to first push the door open to a certain angle, and then rely on a rotary actuator to drive the rotating shaft to rotate and open the entire door. Due to limited installation space, the driving force of the automatic door opening and closing power source is limited. Therefore, a single drive mechanism is usually used to perform both the pushing and rotating opening operations simultaneously, and a clutch allows the same drive mechanism to control the two operation processes separately.

[0071] However, due to space constraints, the clutch cannot be too large. But since opening the door requires a large torque, the clutch needs to withstand a high load. Therefore, the design and installation requirements for the clutch are increased.

[0072] In view of the above, this application provides a refrigerator, the refrigerator comprising:

[0073] The container has an internal storage compartment.

[0074] The door is mounted on the box and is used to close the storage room.

[0075] A door opening and closing device is provided on the cabinet and connected to the door. The door opening and closing device is configured to drive the door to rotate relative to the cabinet in order to open or close the storage compartment.

[0076] The door opening and closing device includes: a power mechanism, a first transmission mechanism, a second transmission mechanism, a push door mechanism, a turn door mechanism, and a clutch. The first transmission mechanism is configured to transmit the driving force provided by the power mechanism to the push door mechanism so that the push door mechanism pushes the door open. The second transmission mechanism is configured to transmit the driving force provided by the power mechanism to the turn door mechanism so that the turn door mechanism rotates and opens the door.

[0077] The second transmission mechanism includes a clutch, which is configured to connect or disconnect the power mechanism from the rotary door mechanism.

[0078] The clutch includes a drive gear, a driven gear, a friction element, a pusher, a guide assembly, and a drive assembly. The drive gear is configured to transmit driving force in a second transmission mechanism. The driven gear is connected to a rotary door mechanism. The friction element is located between the drive gear and the driven gear. One of the drive gear and the driven gear is connected to the friction element, and the other has two states with the friction element: a disengaged state and a connected state. The pusher is located on the side of the driven gear away from the friction element. The driven gear has a through hole. At least one of the pusher and the friction element passes through the through hole so that the pusher abuts against the friction element. The guide assembly abuts against the pusher. The drive assembly is connected to the guide assembly.

[0079] The drive assembly is configured to drive the guide assembly to move in a first direction, so that the guide assembly pushes the pusher to move in a second direction and pushes the friction member to move in the second direction, thereby switching the connection state or the separation state by moving the friction member, so that the drive gear and the driven gear are connected or separated.

[0080] When the door is opened manually, the clutch separates the power mechanism from the revolving door mechanism.

[0081] By setting a friction element between the driving gear and the driven gear, one of the driving gear and the driven gear is connected to the friction element, and the friction element is detachably connected to the other. A pusher is provided on the other side of the driven gear to abut against the friction element. The driving assembly drives the guide assembly to move in a first direction, so that the guide assembly pushes the pusher to move in a second direction, thereby pushing against the friction element and causing the friction element to move in the second direction. This achieves a detachable connection of the friction element. The structure is simple and the overall volume is small. Moreover, by having the friction element bear the load during the automatic opening and closing process of the clutch, the load-bearing capacity of the clutch can be improved.

[0082] Figure 1 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of this application.

[0083] like Figure 1 As shown, the refrigerator 300 provided in this embodiment includes a cabinet 301, a door 302, and a door opening / closing device 200. A storage compartment is formed inside the cabinet 301. The door 302 is rotatably mounted on the cabinet 301. The door 302 is used to close the storage compartment. The door opening / closing device 200 is mounted on the cabinet 301 and connected to the door 302. The door opening / closing device 200 is used to drive the door 302 to rotate, thereby opening or closing the storage compartment.

[0084] Specifically, the door 302 is hinged to the opening of the storage compartment on the box 301 via a pivot.

[0085] In some embodiments, a door 302 is provided on each side of the opening of the storage room, and the two door 302 rotate relative to each other to fully open the storage room.

[0086] In other embodiments, a door 302 is provided on one side of the opening of the storage room, and the door 302 rotates relative to the box 301 to open the storage room.

[0087] The door opening and closing device 200 is used to first push the door 302 open a certain distance, and then drive the door 302 to rotate to open the storage room.

[0088] Figure 2 for Figure 1 The diagram shows the structure of the refrigerator's door opening and closing mechanism.

[0089] like Figure 2 As shown, the door opening and closing device 200 includes a power mechanism 201, a first transmission mechanism 202, a second transmission mechanism 203, a push-door mechanism 204, a revolving door mechanism 205, and a clutch 100. The power mechanism 201 provides power for opening and closing the door. The first transmission mechanism 202 and the second transmission mechanism 203 are respectively connected to the power mechanism 201. The push-door mechanism 204 is connected to the first transmission mechanism 202. The revolving door mechanism 205 is connected to the second transmission mechanism 203. The clutch 100 is mounted on the second transmission mechanism 203. The push-door mechanism 204 is used to push the door 302 open. The revolving door mechanism 205 is used to rotate the door 302 open.

[0090] The first transmission mechanism 202 is used to transmit the driving force provided by the power mechanism 201 to the push door mechanism 204. The second transmission mechanism 203 is used to transmit the driving force provided by the power mechanism 201 to the revolving door mechanism 205. The clutch 100 is used to separate or engage the transmission connection between the second transmission mechanism 203 and the revolving door mechanism 205, so that the driving force provided by the power mechanism 201 can be switched on or off to be transmitted to the revolving door mechanism 205.

[0091] During the door opening operation, the clutch 100 first disengages the transmission connection between the second transmission mechanism 203 and the revolving door mechanism 205. The power mechanism 201 transmits the driving force to the push door mechanism 204 through the first transmission mechanism 202, causing the push door mechanism 204 to push the door 302 open a certain distance, causing the door 302 to rotate at a small angle. Then, the clutch 100 reconnects the transmission connection between the second transmission mechanism 203 and the revolving door mechanism 205. The power mechanism 201 transmits the driving force to the revolving door mechanism 205 through the second transmission mechanism 203, causing the revolving door mechanism 205 to rotate and open the door 302.

[0092] Figure 3 for Figure 2 One of the exploded structural diagrams of the clutch of the door opening and closing device shown. Figure 4 for Figure 3 The diagram shows the structure of the drive gear of the clutch. Figure 5 for Figure 3 The diagram shows the structure during clutch disengagement. Figure 6 for Figure 3 The diagram shows the structure during clutch engagement. Figure 7 for Figure 2 The second schematic diagram of the clutch structure of the door opening and closing device shown. Figure 8 for Figure 7 One of the exploded structural diagrams of the clutch shown. Figure 9 for Figure 7 The second schematic diagram of the exploded structure of the clutch shown. Figure 10 for Figure 7 The diagram shows the structure during clutch disengagement. Figure 11 for Figure 7 The diagram shows the structure during clutch engagement.

[0093] like Figure 3 and Figure 8 As shown, the clutch 100 includes a drive gear 10, a driven gear 20, a friction element 30, a pushing element 40, a guide assembly 50, and a drive assembly 60. The drive gear 10 and driven gear 20 are rotatably mounted in the door opening / closing device 200. The axial direction of the drive gear 10 is parallel to the axial direction of the driven gear 20. The friction element 30 is located between the drive gear 10 and the driven gear 20. The pushing element 40 is located on the side of the driven gear 20 away from the drive gear 10. That is, the drive gear 10, friction element 30, driven gear 20, and pushing element 40 are arranged sequentially. The guide assembly 50 and the drive assembly 60 are located on one side of the drive gear 10.

[0094] like Figure 5 , Figure 6 , Figure 10 and Figure 11As shown, in some embodiments, along the first direction x, the guide assembly 50 and the drive assembly 60 are located on one side of the drive gear 10, and along the second direction y, the drive gear 10, the friction member 30, the driven gear 20 and the pusher 40 are arranged in sequence.

[0095] The drive gear 10 is used for transmission connection with the second transmission mechanism 203. The driven gear 20 is used for transmission connection with the revolving door mechanism 205. One of the drive gear 10 and the driven gear 20 is transmission connected to the friction member 30, while the other has two states with the friction member 30: a separated state and a connected state.

[0096] When the friction element 30 is switched to the connected position, the drive gear 10 is connected to the driven gear 20 through the friction element 30, thereby enabling the clutch 100 to connect the second transmission mechanism 203 to the rotary door mechanism 205. When the friction element 30 is switched to the disengaged position, the drive gear 10 is disconnected from the driven gear 20, and the clutch 100 separates the transmission connection between the second transmission mechanism 203 and the rotary door mechanism 205.

[0097] like Figure 3 As shown, in some embodiments, one side of the friction member 30 is connected to the driven gear 20 for transmission, and the other side of the friction member 30 is detachably connected to the drive gear 10.

[0098] like Figure 8 and Figure 9 As shown, in some embodiments, one side of the friction member 30 is connected to the drive gear 10 for transmission, and the other side of the friction member 30 is detachably connected to the driven gear 20.

[0099] The driven gear 20 has a through hole 21 for abutting the pusher 40 and the friction member 30. The pusher 40 pushes the friction member 30, thereby enabling the friction member 30 to be separably connected. At least one of the pusher 40 and the friction member 30 passes through the through hole 21, thereby enabling the pusher 40 to abut against the friction member 30.

[0100] The guide assembly 50 abuts against the pusher 40, and the drive assembly 60 is connected to the guide assembly 50. The drive assembly 60 is used to provide a driving force for the guide assembly 50 to move, thereby causing the guide assembly 50 to move in a first direction.

[0101] When the drive assembly 60 drives the guide assembly 50 to move along the first direction x, the guide assembly 50 can push the pusher 40 to move along the second direction, thereby pushing the friction member 30 to move along the second direction y, so that the friction member 30 moves between the drive gear 10 and the driven gear 20, switching the connection state or the separation state, thereby connecting or separating the drive gear 10 and the driven gear 20.

[0102] In some embodiments of this application, the first direction is perpendicular to the axial direction of the drive gear 10, and the second direction is parallel to the axial direction of the drive gear 10 and the driven gear 20.

[0103] The clutch 100 has a simple structure and a small overall size. The clutch 100 is engaged by a moving friction element 30. Therefore, the friction element 30 is used to bear the torque of the drive gear 10 on the clutch 100, that is, to bear the load during the automatic opening and closing process, which can improve the load bearing capacity of the clutch 100.

[0104] like Figure 3 and Figure 4 As shown, in some embodiments of this application, the friction member 30 is provided with a locking block 31 on the side facing the drive gear 10, and the drive gear 10 is provided with a locking groove 11 on the side facing the friction member 30. When the friction member 30 moves along the second direction, the locking block 31 and the locking groove 11 cooperate with each other to make the friction member 30 and the drive gear 10 connected in transmission.

[0105] Specifically, when the friction element 30 moves toward the drive gear 10, the locking block 31 falls into the locking groove 11, thereby connecting the friction element 30 with the drive gear 10, and enabling the drive gear 10 to be connected to the driven gear 20 in a transmission connection. The mutual cooperation between the locking block 31 and the locking groove 11 ensures the transmission connection between the friction element 30 and the drive gear 10.

[0106] In some embodiments, the drive gear 10 is provided with a plurality of slots 11, which are arranged at intervals along the circumference of the drive gear 10. Correspondingly, the friction member 30 is provided with a plurality of locking blocks 31, which are arranged along the circumference of the friction member 30. The plurality of slots 11 and the plurality of locking blocks 31 cooperate to improve the strength of the transmission connection.

[0107] In some embodiments, a plurality of slots 11 are evenly arranged along the circumference of the drive gear 10. Correspondingly, a plurality of blocks 31 are evenly arranged along the circumference of the friction member 30. The evenly distributed slots 11 and blocks 31 can, on the one hand, improve the uniformity of the mass distribution of the drive gear 10 and the friction member 30, preventing offset or swaying during rotation; on the other hand, due to the cooperation between the blocks 31 and the slots 11, and their even circumferential arrangement, the stability of the transmission connection between the friction member 30 and the drive gear 10 can also be improved.

[0108] In some embodiments, any block 31 can engage with any slot 11, so that the friction member 30 can be connected to the drive gear 10 for transmission when rotated to multiple different angles.

[0109] In some embodiments, the card block 31 has a chamfer on the side facing the drive gear 10, and the card slot 11 has a chamfer on the side facing the friction member 30.

[0110] The chamfering design facilitates the insertion of the locking block 31 into the slot 11 when the friction element 30 moves toward the drive gear 10, preventing interference and ensuring insertion, thereby improving the efficiency of the engagement between the locking block 31 and the slot 11.

[0111] In some embodiments of this application, the friction member 30 is provided with a friction post 32, which passes through the through hole 21 and abuts against the pusher 40.

[0112] The through hole 21 passes through the driven gear 20, and the friction post 32 passes through the through hole 21 and abuts against the pusher 40, so that the pusher 40 can drive the friction post 30 to move.

[0113] Specifically, the friction post 32 is located on the side of the friction member 30 away from the drive gear 10. The friction post 32 passes through the through hole 21 from the side of the driven gear 20 near the friction member 30 and exits from the other side of the driven gear 20, thereby abutting against the pusher 40 and making the friction member 30 and the driven gear 20 connected in transmission.

[0114] In some embodiments, the axial direction of the perforation 21 is parallel to the axial direction of the driven gear 20, thereby allowing the friction post 32 to move along the axial direction of the driven gear 20.

[0115] In some embodiments, the driven gear 20 is provided with a plurality of through holes 21. The plurality of through holes 21 are arranged at intervals along the circumference of the driven gear 20. Correspondingly, the friction member 30 is provided with a plurality of friction posts 32, which are arranged along the circumference of the friction member 30. The plurality of through holes 21 cooperate with the plurality of friction posts 32, thereby improving the strength of the transmission connection between the friction member 30 and the driven gear 20.

[0116] In some embodiments, a plurality of perforations 21 are evenly arranged along the circumference of the driven gear 20. Correspondingly, a plurality of friction posts 32 are evenly arranged along the circumference of the friction member 30. The evenly distributed perforations 21 and friction posts 32 can, on the one hand, improve the uniformity of the mass distribution of the driven gear 20 and the friction member 30, preventing the driven gear 20 and the friction member 30 from shifting or wobbling during rotation; on the other hand, due to the cooperation between the friction posts 32 and the perforations 21, and their even circumferential arrangement, the stability of the transmission connection between the driven gear 20 and the friction member 30 can also be improved.

[0117] In some embodiments of this application, the pusher 40 is provided with a support groove 41 on the side facing the driven gear 20, and the friction post 32 is disposed in the support groove 41 and abuts against the bottom wall of the support groove 41.

[0118] By providing a retaining groove 41 on the pusher 40, the friction post 32 is abutted in the retaining groove 41, thereby improving the stability of the contact between the friction post 30 and the pusher 40, and thus improving the clutch accuracy.

[0119] like Figure 8 and Figure 9 As shown, in some other embodiments of this application, the friction member 30 is provided with a connecting block 33 on the side facing the driven gear 20, and the driven gear 20 is provided with a connecting groove 22 on the side facing the friction member 30. When the friction member 30 moves along the second direction, the connecting block 33 and the connecting groove 22 cooperate with each other to make the friction member 30 and the driven gear 20 connected in a transmission manner.

[0120] Specifically, when the friction element 30 moves toward the driven gear 20, the connecting block 33 falls into the connecting groove 22, thereby connecting the friction element 30 and the driven gear 20, and making the drive gear 10 and the driven gear 20 drively connected. The mutual cooperation between the connecting block 33 and the connecting groove 22 can ensure the drively connection between the friction element 30 and the driven gear 20.

[0121] In some embodiments, the driven gear 20 is provided with a plurality of connecting grooves 22, which are arranged circumferentially along the driven gear 20. Correspondingly, the friction member 30 is provided with a plurality of connecting blocks 33, which are arranged circumferentially along the friction member 30. The plurality of connecting grooves 22 cooperate with the plurality of connecting blocks 33 to improve the strength of the transmission connection.

[0122] In some embodiments, a plurality of connecting grooves 22 are evenly arranged along the circumference of the driven gear 20. Correspondingly, a plurality of connecting blocks 33 are evenly arranged along the circumference of the friction member 30. The evenly distributed connecting grooves 22 and connecting blocks 33 can, on the one hand, improve the uniformity of the mass distribution of the driven gear 20 and the friction member 30, preventing offset or swaying during rotation; on the other hand, due to the cooperation of the connecting grooves 22 and connecting blocks 33 and their even circumferential arrangement, the stability of the transmission connection between the friction member 30 and the driven gear 20 can also be improved.

[0123] In some embodiments, any connecting block 33 can cooperate with any connecting groove 22, so that the friction member 30 can be connected to the driven gear 20 for transmission when rotated to multiple angles.

[0124] In some embodiments, the connecting block 33 has a chamfer on the side facing the driven gear 20, and the connecting groove 22 has a chamfer on the side facing the friction member 30.

[0125] The chamfering allows the connecting block 33 to be inserted into the connecting groove 22 when the friction element 30 moves toward the driven gear 20, preventing interference and ensuring insertion, thereby improving the efficiency of the connection between the connecting groove 22 and the connecting block 33.

[0126] In some embodiments of this application, the pusher 40 is provided with a retaining post 42, which passes through the through hole 21 and abuts against the friction member 30.

[0127] A support post 42 is inserted into the through hole 21 and abuts against the friction member 30, thereby enabling the pusher 40 to drive the friction member 30 to move.

[0128] Specifically, the abutment post 42 is located on the side of the pusher 40 facing the driven gear 20. The abutment post 42 passes through the through hole 21 from the side of the driven gear 20 away from the friction member 30 and exits from the other side of the driven gear 20, thereby abutting against the friction member 30 and making the pusher 40 and the driven gear 20 drively connected.

[0129] In some embodiments, the axial direction of the perforation 21 is parallel to the axial direction of the driven gear 20, thereby allowing the abutment post 42 to move along the axial direction of the driven gear 20.

[0130] In some embodiments, the driven gear 20 is provided with a plurality of through holes 21. The plurality of through holes 21 are arranged circumferentially along the driven gear 20. Correspondingly, the pusher 40 is provided with a plurality of abutment posts 42, which are arranged circumferentially along the pusher 40. The plurality of through holes 21 cooperate with the plurality of abutment posts 42, thereby improving the strength of the transmission connection between the pusher 40 and the driven gear 20.

[0131] In some embodiments, a plurality of through holes 21 are evenly arranged along the circumference of the driven gear 20. Correspondingly, a plurality of abutment posts 42 are evenly arranged along the circumference of the pusher 40. The evenly distributed through holes 21 and abutment posts 42 can, on the one hand, improve the uniformity of the mass distribution of the driven gear 20 and the pusher 40, preventing the driven gear 20 and the pusher 40 from deviating or swaying during rotation; on the other hand, due to the cooperation between the abutment posts 42 and the through holes 21, and their even circumferential arrangement, the stability of the transmission connection between the driven gear 20 and the pusher 40 can also be improved.

[0132] like Figure 4 and Figure 9 As shown, in some embodiments of this application, the drive gear 10 is provided with a receiving groove 12 on the side facing the driven gear 20, and the friction member 30 is disposed in the receiving groove 12.

[0133] By setting the receiving groove 12, the increase in distance between the drive gear 10 and the driven gear 20 caused by the setting of the friction element 30 can be reduced, thereby reducing the overall volume of the clutch 100 and also reducing the weight of the clutch 100.

[0134] Optionally, the depth of the receiving groove 12 is greater than or equal to the thickness of the friction element 30, so that the friction element 30 can be fully accommodated in the drive gear 10.

[0135] In some embodiments, the receiving groove 12 is a circular groove, and the friction element 30 is generally disc-shaped, which facilitates processing and can improve assembly efficiency.

[0136] In some embodiments, the axis of the receiving groove 12 coincides with the axis of the drive gear 10, thereby making the mass distribution of the drive gear 10 uniform and preventing the drive gear 10 from deviating or wobbling during rotation.

[0137] like Figure 8 and Figure 9 As shown, in some embodiments, the driving gear 10 has a connecting post 13 on the side facing the driven gear 20. The friction member 30 has a connecting hole 34. The connecting post 13 passes through the connecting hole 34, thereby connecting the friction member 30 to the driving gear 10.

[0138] The friction element 30 can move along the axial direction of the connecting column 13 under the action of the connecting column 13 and the connecting hole 34, thereby improving the accuracy of the movement of the friction element 30.

[0139] In some embodiments, the axial direction of the connecting column 13 is parallel to the axial direction of the drive gear 10, thereby causing the friction element 30 to move along the axial direction of the drive gear 10.

[0140] In some embodiments, the axis of the connecting column 13 coincides with the axis of the drive gear 10, thereby making the mass distribution of the drive gear 10 uniform and preventing the drive gear 10 from deviating or wobbling during rotation.

[0141] In some embodiments, the connecting post 13 is provided with an anti-rotation groove 131. An anti-rotation block 341 is provided in the connecting hole 34. The anti-rotation groove 131 and the anti-rotation block 341 cooperate to allow the friction member 30 to rotate with the rotation of the drive gear 10. That is, the friction member 30 and the drive gear 10 are connected by transmission through the anti-rotation groove 131 and the anti-rotation block 341.

[0142] Specifically, the anti-rotation groove 131 is opened along the axial direction of the connecting post 13, and the anti-rotation block 341 extends along the axial direction of the connecting hole 34, so that the friction member 30 maintains the transmission connection with the drive gear 10 when it moves along the axial direction of the connecting post 13.

[0143] In some embodiments, the driven gear 20 is provided with a rotating shaft 23. The pusher 40 is provided with a rotating hole 43. The rotating shaft 23 passes through the rotating hole 43, thereby connecting the driven gear 20 and the pusher 40.

[0144] The pusher 40 can move along the rotating shaft 23 under the action of the rotating shaft 23 and the rotating hole 43, thereby supporting the movement of the friction member 30 and improving the accuracy of the drive.

[0145] In some embodiments, the axis of the rotating shaft 23 coincides with the axis of the driven gear 20, thereby making the mass distribution of the driven gear 20 uniform and preventing the driven gear 20 from deviating or wobbling during rotation.

[0146] In some embodiments, the driven gear 20 has a clearance groove 24 on the side facing the pusher 40. The pusher 40 is disposed in the clearance groove 24.

[0147] By setting the clearance groove 24, the increase in structural thickness caused by the need for the pusher 40 to move axially in the driven gear 20 can be reduced, thereby reducing the overall volume of the clutch 100 and also reducing the weight of the clutch 100.

[0148] In some embodiments, the depth of the clearance groove 24 is greater than or equal to the thickness of the pusher 40, so that the pusher 40 can be fully accommodated in the driven gear 20.

[0149] In some embodiments, the clearance groove 24 is a circular groove, and the pusher 40 is generally disc-shaped, which facilitates processing and can improve assembly efficiency.

[0150] In some embodiments, the axis of the clearance groove 24 coincides with the axis of the driven gear 20, thereby making the mass distribution of the driven gear 20 uniform and preventing the driven gear 20 from deviating or wobbling during rotation.

[0151] like Figure 3 , Figure 8 and Figure 9 As shown, in some embodiments of this application, the clutch 100 further includes a reset member 70, which is used to push the friction member 30 so that the friction member 30 moves along the second direction closer to the driven gear 20.

[0152] Specifically, the reset member 70 is located between the friction member 30 and the drive gear 10, thereby pushing the friction member 30 to move toward the driven gear 20.

[0153] In some embodiments, the reset member 70 is an elastic reset member.

[0154] Specifically, the reset element 70 can be a spring.

[0155] like Figure 3 As shown, in some embodiments of this application, when the reset member 70 is in a compressed state, the reset member 70 is pressed and abutted by the friction member 30, so that the friction member 30 is connected to the drive gear 10 and the clutch 100 is in a connected state. When the reset member 70 is in a reset state, the reset member 70 abuts against the friction member 30, so that the friction member 30 is away from the drive gear 10 and the clutch 100 is in a disengaged state, thereby improving the stability of the transmission connection of the clutch 100.

[0156] like Figure 8 and Figure 9As shown, in some other embodiments of this application, when the reset member 70 is in a compressed state, the reset member 70 is pressed and held by the friction member 30, causing the friction member 30 to move away from the driven gear 20, and the clutch 100 is in a disengaged state. When the reset member 70 is in a reset state, the reset member 70 holds the friction member 30, causing the friction member 30 to connect with the driven gear 20, and the clutch 100 is in a connected state, thereby improving the stability of the transmission connection of the clutch 100.

[0157] In some embodiments, the reset member 70 is sleeved on the connecting post 13, thereby improving the assembly efficiency of the reset member 70 and ensuring that the position of the reset member 70 in the clutch 100 does not change.

[0158] like Figure 3 As shown, in some embodiments of this application, the guide assembly 50 includes a shift fork 51, which is connected to the drive assembly 60. The drive assembly 60 is used to drive the shift fork 51 to move toward the pusher 40 along a first direction.

[0159] The shift fork 51 has a guide surface 511 on the side facing the pusher 40, and the pusher 40 has a mating surface 44. The guide surface 511 abuts against the mating surface 44, so that when the shift fork 51 moves in the first direction, the pusher 40 moves in the second direction.

[0160] In some embodiments, both the guide surface 511 and the mating surface 44 are inclined surfaces. In other embodiments, the guide surface 511 and the mating surface 44 may also be curved surfaces. Both can change the direction of movement and are not specifically limited.

[0161] By engaging the guide surface 511 with the mating surface 44, the first direction movement of the shift fork 51 can be converted into the second direction movement of the pusher 40, which facilitates the arrangement of the drive assembly 60 and helps to reduce the overall thickness of the clutch 100, i.e., the dimension in the second direction.

[0162] like Figure 8 and Figure 9 As shown in some embodiments of this application, the guide assembly 50 includes a positioning plate 52 and a guide plate 53. The positioning plate 52 is connected to the drive assembly 60, and the guide plate 53 is movably connected to the positioning plate 52 and abuts against the side of the push member 40 away from the driven gear 20. The drive assembly 60 is used to drive the positioning plate 52 to move in a first direction, so that when the guide plate 53 moves in the first direction, it abuts against the push member 40 in a second direction.

[0163] The door opening and closing device 200 is provided with a guide groove 206, and a guide block 531 is provided on the side of the guide plate 53 away from the pusher 40. The guide block 531 is movably disposed in the guide groove 206. The guide groove 206 and the guide block 531 cooperate, so that when the guide plate 53 moves in the first direction, it can move in the second direction at the same time.

[0164] In some embodiments, the guide groove 206 is an inclined groove, and the guide block 531 is a hemispherical protrusion.

[0165] By cooperating with the guide block 531 and the guide groove 206, the movement of the positioning plate 52 along the first direction can be converted into the movement of the guide plate 53 along the first and second directions, thereby directly pushing the pusher 40 to move along the second direction, reducing frictional resistance, which facilitates reducing the power of the drive assembly 60, and helps to reduce the overall size and cost of the clutch 100.

[0166] In some embodiments, the guide plate 53 is provided with a clearance hole 532, and the rotating shaft 23 passes through the rotating hole 43 and the clearance hole 532, thereby restricting the movement of the guide plate 53 and the pusher 40 and improving the operating accuracy of the clutch 100.

[0167] In some embodiments of this application, the drive assembly 60 includes a drive shaft 61 and an electromagnet 62. The drive shaft 61 is movably disposed within the electromagnet 62 along a first direction. A shift fork 51 or a positioning plate 52 is connected to the side of the drive shaft 61 facing the pusher 40.

[0168] The electromagnet 62 is used to generate magnetic force when energized, thereby causing the drive shaft 61 to move in the first direction, which in turn drives the shift fork 51 or the positioning plate 52 to move.

[0169] The electromagnet 62 has a simple control method, is sensitive, and has high driving precision.

[0170] In some embodiments of this application, the drive assembly 60 further includes a drive reset member 63, which is disposed on the drive shaft 61 and is used to reset the drive shaft 61 when the electromagnet 62 is not energized.

[0171] like Figure 3 As shown, in some embodiments, the drive reset member 63 is located on the side of the drive shaft 61 away from the pusher 40, and the drive reset member 63 is used to move the drive shaft 61 in a direction away from the pusher 40.

[0172] like Figure 8 and Figure 9 As shown, in some embodiments, a drive reset member 63 is disposed on the side of the drive shaft 61 near the pusher 40, and the drive reset member 63 is used to move the drive shaft 61 toward the direction of the pusher 40.

[0173] In some embodiments, the drive reset member 63 is an elastic reset member.

[0174] Specifically, the drive reset component 63 can be a spring. The drive reset component 63 is sleeved on the drive shaft 61, thereby improving the assembly efficiency of the drive reset component 63.

[0175] like Figure 3 As shown, in some embodiments of this application, the clutch 100 further includes a pad 80. The pad 80 is disposed between the drive gear 10 and the friction member 30. The pad 80 relieves friction between the drive gear 10 and the friction member 30 by separating the drive gear 10 and the friction member 30 when they are disengaged.

[0176] like Figure 3 , Figure 8 and Figure 9 As shown, in some embodiments of this application, the friction member 30 is provided with a reset groove 35. The reset member 70 is disposed in the reset groove 35.

[0177] like Figure 3 As shown, in some embodiments, the reset groove 35 and the friction post 32 are disposed opposite to each other on both sides of the friction member 30, thereby reducing the size of the friction member 30.

[0178] In some embodiments, the pad 80 is provided with a guide post 81. The guide post 81 is disposed in the reset groove 35, thereby guiding the movement of the friction member 30.

[0179] In some embodiments, the reset groove 35 is uniformly arranged around the circumference of the friction member 30, and the guide post 81 and the reset member 70 are alternately arranged in the reset groove 35.

[0180] like Figure 5 and Figure 6 As shown in some embodiments of this application, when the clutch 100 is disengaged, the electromagnet 62 is not energized, and the drive reset member 63 pushes the drive shaft 61 to move away from the push member 40, causing the shift fork 51 to move away from the push member 40. At this time, the reset member 70 pushes the friction member 30 to move towards the driven gear 20, causing the locking block 31 to separate from the locking groove 11. Simultaneously, the friction member 30 abuts against the push member 40 through the friction post 32, causing the push member 40 to move away from the driven gear 20 along the rotation shaft 23. At this time, when the drive gear 10 rotates, the friction member 30 will rotate together, but at this time, the friction member 30 is separated from the driven gear 20 and will not drive the driven gear 20 to rotate.

[0181] When the clutch 100 engages, the electromagnet 62 is energized, which pushes the drive shaft 61 toward the pusher 40, causing the shift fork 51 to approach the pusher 40. Under the action of the guide surface 511 and the mating surface 44, the pusher 40 approaches the driven gear 20 in the second direction. The pusher 40 abuts against the friction post 32 on the friction member 30, thereby causing the friction member 30 to move toward the drive gear 10, so that the locking block 31 engages with the locking groove 11. At this time, when the drive gear 10 rotates, the friction member 30 will rotate together. At the same time, the driven gear 20, which is connected to the friction member 30, will rotate together under the drive of the friction member 30.

[0182] like Figure 10 and Figure 11 As shown, in some other embodiments of this application, when the clutch 100 is disengaged, the electromagnet 62 is not energized, and the drive reset member 63 pushes the drive shaft 61 to move toward the push member 40, causing the push member 40 to move along the rotation shaft 23. The abutment post 42 on the push member 40 moves through the through hole 21 on the driven gear 20, pushing the friction member 30 that abuts against the abutment post 42 away from the driven gear 20, thereby disengaging the connecting block 33 from the connecting groove 22. At this time, when the drive gear 10 rotates, the friction member 30 will rotate together, but at this time, the friction member 30 is separated from the driven gear 20 and will not drive the driven gear 20 to rotate.

[0183] When the clutch 100 engages, the electromagnet 62 is energized, pushing the drive shaft 61 away from the pusher 40. This causes the guide plate 53 to move away from the driven gear 20. At this time, the reset member 70 pushes the friction member 30 towards the driven gear 20, causing the connecting block 33 to engage with the connecting groove 22. Simultaneously, the friction member 30 abuts against the abutment post 42, causing the abutment post 42 to retract into the through hole 21 of the driven gear 20. This causes the pusher 40 to move away from the driven gear 20 along the rotation shaft 23. When the drive gear 10 rotates, the friction member 30 rotates along with it, and the driven gear 20, which is connected to the friction member 30, also rotates under its influence.

[0184] The refrigerator 300 provided in this application embodiment includes: a cabinet 301 with a storage compartment inside; a door 302 rotatably mounted on the cabinet 301 for closing the storage compartment; and a door opening / closing device 200 mounted on the cabinet 301 and connected to the door 302, the door opening / closing device 200 being configured to drive the door 302 to rotate relative to the cabinet 301 to open or close the storage compartment.

[0185] The door opening and closing device 200 includes a power mechanism 201, a first transmission mechanism 202, a second transmission mechanism 203, a push door mechanism 204, a turn door mechanism 205, and a clutch 100. The first transmission mechanism 202 is configured to transmit the driving force provided by the power mechanism 201 to the push door mechanism 204 so that the push door mechanism 204 pushes the door 302 open. The second transmission mechanism 203 is configured to transmit the driving force provided by the power mechanism 201 to the turn door mechanism 205 so that the turn door mechanism 205 rotates and opens the door 302.

[0186] The clutch 100 is connected to the second transmission mechanism 203 and is configured to connect or disconnect the second transmission mechanism 203 from the rotary door mechanism 205.

[0187] The clutch 100 includes a drive gear 10, a driven gear 20, a friction element 30, a pusher 40, a guide assembly 50, and a drive assembly 60. The drive gear 10 is connected to the second transmission mechanism 203, and the driven gear 20 is connected to the rotary door mechanism 205. The friction element 30 is located between the drive gear 10 and the driven gear 20. One of the drive gear 10 and the driven gear 20 is connected to the friction element 30, while the other has two states with the friction element 30: a disengaged state and a connected state. The pusher 40 is located away from the friction element 30 on the driven gear 20. On one side of 0, the driven gear 20 is provided with a through hole 21, through which one of the pushing member 40 and the friction member 30 passes, so that the pushing member 40 abuts against the friction member 30, the guide assembly 50 abuts against the pushing member 40, and the drive assembly 60 is connected to the guide assembly 50; the drive assembly 60 is configured to drive the guide assembly 50 to move in a first direction, so that the guide assembly 50 pushes the pushing member 40 to move in a second direction and pushes the friction member 30 to move in the second direction, thereby connecting or separating the drive gear 10 and the driven gear 20 by moving the friction member 30.

[0188] By setting a friction element 30 between the drive gear 10 and the driven gear 20, one of the drive gear 10 and the driven gear 20 is connected to the friction element 30, and the friction element 30 is detachably connected to the other. A pusher 40 is provided on the other side of the driven gear 20 to abut against the friction element 30. The drive assembly 60 drives the guide assembly 50 to move in a first direction, so that the guide assembly 50 pushes the pusher 40 to move in a second direction, thereby pushing against the friction element 30 and causing the friction element 30 to move in the second direction. This achieves the detachable connection of the friction element 30. The structure is simple and the overall volume is small. Moreover, by having the friction element 30 bear the load during the automatic opening and closing process of the clutch 100, the load-bearing capacity of the clutch 100 can be improved.

[0189] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0190] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that, The refrigerator includes: The box (301) has a storage room inside; A door (302) is rotatably mounted on the box (301), and the door (302) is used to close the storage room; A door opening and closing device (200) is provided on the housing (301) and connected to the door (302); The door opening and closing device (200) is configured to drive the door (302) to rotate relative to the box (301) to open or close the storage room; The door opening and closing device (200) includes: Power mechanism (201); Door opening mechanism (204); Revolving door mechanism (205); A first transmission mechanism (202) is configured to transmit the driving force provided by the power mechanism (201) to the door pushing mechanism (204) so ​​that the door pushing mechanism (204) pushes open the door (302); A second transmission mechanism (203) is configured to transmit the driving force provided by the power mechanism (201) to the rotary door mechanism (205) so that the rotary door mechanism (205) rotates and opens the door (302); The second transmission mechanism (203) includes a clutch (100) configured to connect or disconnect the power mechanism (201) from the rotary door mechanism (205); The clutch (100) includes: A drive gear (10) is configured to transmit the driving force in the second transmission mechanism (203); Driven gear (20), the driven gear (20) is provided with a through hole (21), and the driven gear (20) is connected to the rotary door mechanism (205) in a transmission connection; Friction element (30) is disposed between the drive gear (10) and the driven gear (20); wherein, one of the drive gear (10) and the driven gear (20) is connected to the friction element (30), and the other has two states with the friction element (30): a separated state and a connected state; A pusher (40) is provided on the side of the driven gear (20) away from the friction member (30); Wherein, at least one of the pushing member (40) and the friction member (30) passes through the through hole (21) so that the pushing member (40) abuts against the friction member (30); A guide assembly (50) abuts against the pusher (40); and a drive assembly (60), the drive assembly (60) being connected to the guide assembly (50); The drive assembly (60) is configured to drive the guide assembly (50) to move in a first direction, so that the guide assembly (50) pushes the pusher (40) to move in a second direction and pushes the friction member (30) to move in the second direction, thereby switching the connection state or the separation state by moving the friction member (30), so that the drive gear (10) is connected or separated from the driven gear (20); When the door is opened manually, the clutch (100) disengages the power mechanism (201) from the revolving door mechanism (205).

2. The refrigerator according to claim 1, characterized in that, The friction element (30) has a locking block (31) on the side facing the drive gear (10), and the drive gear (10) has a locking groove (11) on the side facing the friction element (30). When the friction element (30) moves in the second direction, the locking block (31) and the locking groove (11) cooperate with each other to connect the friction element (30) with the drive gear (10).

3. The refrigerator according to claim 2, characterized in that, The friction member (30) has a friction post (32) on the side away from the drive gear (10). The friction post (32) passes through the through hole (21) and abuts against the pusher (40).

4. The refrigerator according to claim 3, characterized in that, The pusher (40) has a support groove (41) on the side facing the driven gear (20), and the friction post (32) is located in the support groove (41) and abuts against the bottom wall of the support groove (41).

5. The refrigerator according to claim 1, characterized in that, The friction element (30) has a connecting block (33) on the side facing the driven gear (20), and the driven gear (20) has a connecting groove (22) on the side facing the friction element (30). When the friction element (30) moves in the second direction, the connecting block (33) and the connecting groove (22) cooperate with each other to connect the friction element (30) with the driven gear (20).

6. The refrigerator according to claim 5, characterized in that, The pusher (40) has a support post (42) on the side facing the driven gear (20). The support post (42) passes through the through hole (21) and abuts against the friction member (30).

7. The refrigerator according to any one of claims 1-6, characterized in that, The drive gear (10) has a receiving groove (12) on the side facing the driven gear (20), and the friction member (30) is disposed in the receiving groove (12).

8. The refrigerator according to any one of claims 1-6, characterized in that, The clutch (100) further includes a reset member (70) disposed between the friction member (30) and the drive gear (10), the reset member (70) being configured to push the friction member (30) so that the friction member (30) moves toward the driven gear (20) in a second direction.

9. The refrigerator according to any one of claims 1-6, characterized in that, The guide assembly (50) includes a fork (51) connected to the drive assembly (60). The fork (51) has a guide surface (511) on the side facing the pusher (40). The pusher (40) has a mating surface (44). The guide surface (511) abuts against the mating surface (44) to cause the pusher (40) to move in a second direction when the fork (51) moves in a first direction.

10. The refrigerator according to any one of claims 1-6, characterized in that, The guide assembly (50) includes a positioning plate (52) and a guide plate (53). The positioning plate (52) is connected to the drive assembly (60). The guide plate (53) is movably connected to the positioning plate (52) and abuts against the side of the pusher (40) away from the driven gear (20). The door opening and closing device (200) is provided with a guide groove (206). The side of the guide plate (53) away from the pusher (40) is provided with a guide block (531). The guide block (531) is movably disposed in the guide groove (206) so that when the positioning plate (52) pushes the guide plate (53) to move in the first direction, the guide plate (53) moves in the second direction.

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