Clutch, transmission device, box equipment and refrigerator

Abstract

The invention discloses a clutch, a transmission device, box equipment and a refrigerator. The clutch comprises a driving piece, a driven piece and a transmission assembly. The driven piece comprises an output part and a matching part fixedly connected with the output part, and the matching part is provided with a containing groove. The transmission assembly comprises a rotating piece rotationally arranged in the containing groove, a clutch piece in transmission fit with a transmission piece, and a transmission piece fixedly connected with the driving piece. And the clutch piece is movably arranged on the rotating piece, has a transmission state in transmission fit with the matching part and a separation state separated from the matching part, and can be reset to the separation state. The transmission part can rotate relative to the rotating part along with the driving part so as to push the clutch part to be in a transmission state. According to the clutch, the transmission device can be applied to meet the intelligent opening and closing requirements of the refrigerator, manual opening and closing operation of a user is not interfered, meanwhile, the structure is simple, and the production cost can be reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of household appliances, and in particular, to a clutch, a transmission device, a cabinet device and a refrigerator. BACKGROUND

[0002] With the development of social economy and the improvement of people's living standards, the refrigerator has gradually become an indispensable household appliance in people's daily life. With the continuous expansion of intelligent technology to the field of household appliances, consumers are increasingly pursuing ease of use and intelligence in the use experience of household appliances. As a basic function of refrigerator intelligence, the application of automatic opening and closing of the refrigerator is also becoming more and more widespread.

[0003] In the related art, the refrigerator usually adopts an electric driving mode to realize automatic opening and closing. However, when using the electric driving mode, a clutch needs to be used to take into account the manual opening and closing. However, the transmission mode of the traditional clutch is complex, and the application cost is high, resulting in a high production cost of such a refrigerator. SUMMARY

[0004] Therefore, the present disclosure provides a clutch, a transmission device, a cabinet device and a refrigerator. The clutch can meet the intelligent opening and closing requirements of the refrigerator, and does not interfere with the user's manual opening and closing operation, while the structure is simple and can reduce the production cost.

[0005] Specifically, the present disclosure is implemented by the following technical solutions:

[0006] According to a first aspect of an embodiment of the present disclosure, a clutch is provided, comprising a driving member, a driven member and a transmission assembly. The driven member comprises an output portion and a matching portion fixedly connected with the output portion, and the matching portion is provided with an accommodating groove. The transmission assembly comprises a rotating member rotatably arranged in the accommodating groove, a clutch member in transmission cooperation with the transmission member, and a transmission member fixedly connected with the driving member. The clutch member is movably arranged on the rotating member, and the clutch member has a transmission state in transmission cooperation with the matching portion and a separation state separated from the matching portion, and the clutch member can be reset to the separation state. The transmission member can rotate relative to the rotating member with the driving member to push the clutch member to the transmission state.

[0007] When the clutch member is in the transmission state, the driving member can drive the transmission assembly and the driven member to rotate. When the clutch member is in the separation state, the driven member can rotate relative to the transmission assembly and the driving member.

[0008] The technical solutions of the present disclosure are further described as follows:

[0009] In one of the embodiments, the transmission member can push the clutch member so that the clutch member is frictionally fixed with the side wall of the accommodating groove, so that the clutch member is in the transmission state.

[0010] In one of the embodiments, the maximum static friction force generated by the frictional fixing of the clutch member with the sidewall of the accommodating groove is equal to the maximum output power of the output part.

[0011] In one of the embodiments, at least one of the outer sidewall of the clutch member and the sidewall of the accommodating groove is provided with a friction layer.

[0012] In one of the embodiments, the plurality of clutch members are arranged on the rotating member in a circumferential direction of the transmission member.

[0013] In one of the embodiments, the clutch member is in sliding fit with the rotating member and is capable of reciprocating in a radial direction of the rotation axis of the driving member to switch between the transmission state and the separation state.

[0014] In one of the embodiments, the rotating member is provided with a first limiting groove for limiting the clutch member.

[0015] In one of the embodiments, the rotating member comprises a cover body covering the accommodating groove and at least two convex ridges protruding from the cover body, the convex ridges are inserted into the accommodating groove, and the first limiting groove is formed by the interval arrangement of the adjacent two convex ridges.

[0016] In one of the embodiments, the fitting part comprises a limiting wall arranged in the accommodating groove, the limiting wall is arranged in an interval with the cover body to limit the axial movement of the clutch member relative to the driving member.

[0017] In one of the embodiments, the transmission member comprises a mounting part in transmission connection with the driving member and a transmission part connected with the mounting part, the rotating member is provided with a fitting groove for the movement of the transmission part, and the transmission part is capable of rotating in the fitting groove. The transmission part comprises a plurality of convex parts connected with the mounting part and a concave part arranged between two adjacent convex parts, and the concave part corresponds to one of the clutch members. When the clutch member is in abutment with the convex part, the clutch member is in the transmission state. When part of the clutch member is inserted into the concave part, the clutch member is in the separation state.

[0018] In one of the embodiments, a smooth transition is provided between the convex part and the concave part.

[0019] And / or, the clutch member is in the shape of a rotor.

[0020] In one of the embodiments, the transmission assembly further comprises a reset member arranged between the clutch member and at least one of the rotating member and the fitting part, so that the clutch member can be reset to the separation state.

[0021] In one of the embodiments, the plurality of clutch members are arranged on the rotating member in a circumferential direction of the transmission member. The reset member comprises an elastic ring, and the plurality of clutch members are tightly arranged on the transmission member or the rotating member by the elastic ring, so that the clutch member can be elastically reset to the separation state.

[0022] In one of the embodiments, the clutching member is provided with a clamping groove for mounting the elastic ring, and at least a part of the elastic ring is clamped in the clamping groove.

[0023] In one of the embodiments, the elastic ring is completely embedded in the clamping groove.

[0024] Alternatively, the side wall of the accommodating groove is provided with a first avoiding groove for avoiding the elastic ring.

[0025] In one of the embodiments, the rotating member includes a cover body covering the accommodating groove and at least two convex ridges protruding from the cover body, the convex ridges are inserted into the accommodating groove, and the adjacent two convex ridges are arranged at intervals to form a first limiting groove for limiting the clutching member. The convex ridges are provided with a second avoiding groove for avoiding the elastic ring.

[0026] In one of the embodiments, the clutching member is in a cylindrical shape, and the clamping groove is an annular groove.

[0027] In one of the embodiments, the clutch further includes a protective shell, the driving member, the driven member and the transmission assembly are respectively rotatably encapsulated in the protective shell. At least a part of the driving member is exposed outside the protective shell, and at least a part of the driven member is exposed outside the protective shell.

[0028] In one of the embodiments, one of the protective shell and the rotating member is provided with a magnetic attraction member, and the other is provided with a magnetic member magnetically attracted to the magnetic attraction member. When the clutching member is in the separated state, the magnetic attraction member and the magnetic member are magnetically attracted to each other to limit the movement of the rotating member relative to the protective shell.

[0029] According to a second aspect of the embodiments of the present disclosure, a transmission device is provided, which includes a bearing member, a motor, an extension assembly and the clutching member in any of the above embodiments. The bearing member includes a first end and a second end arranged opposite to the first end. The motor is arranged at the first end, and the motor includes an output end in transmission connection with the driving member. The extension assembly includes a rotating member rotatably arranged at the bearing member and an extension member in cooperation with the rotating member, and the rotating member is in transmission connection with the driven member. In the transmission state, the motor can drive the extension member to move towards the second end or away from the second end through the clutching member. In the separated state, the motor is disconnected from the extension assembly.

[0030] The technical solutions provided by the embodiments of the present disclosure have at least the following beneficial effects:

[0031] The transmission device provided by the present disclosure can be installed between a drawer and a cabinet of a refrigerator during use, to realize automatic opening and closing and manual opening and closing of the drawer. The carrier is fixed to the cabinet, and the telescopic component is in driving connection with the drawer to drive the drawer to move relative to the cabinet. When the clutch is in a transmission state, the motor is in driving connection with the telescopic assembly through the clutch, and the motor can drive the telescopic component to move towards the second end or away from the second end, to realize electrically-driven automatic opening and closing of the drawer. When the clutch is in a separation state, the motor is disconnected from the telescopic assembly through the clutch, and the user can manually open and close the drawer without dragging the motor end to rotate, so that the manually-opened drawer and the electrically-opened drawer do not interfere with each other, thereby reducing the manual load and enabling the user to open and close the drawer with less effort, to improve the use experience.

[0032] The technical solutions of the present disclosure are further described below:

[0033] In one of the embodiments, the transmission device further comprises a linkage mechanism and a driving rod. The linkage mechanism comprises a first mounting member, a second mounting member, and a linkage assembly arranged between the first mounting member and the second mounting member, and the second mounting member is swingable relative to the first mounting member through the linkage assembly. The driving rod is connected with the telescopic component, and the second end is provided with a connecting gap, and the driving rod is movably connected with the linkage mechanism through the connecting gap to drive the second mounting member to swing relative to the first mounting member.

[0034] According to a third aspect of the embodiments of the present disclosure, a cabinet device is provided, which comprises a cabinet, a cabinet door in driving connection with the cabinet, and the transmission device in the above-described embodiments. The cabinet is fixedly connected with the first mounting member, and the cabinet door is fixedly connected with the second mounting member.

[0035] According to a fourth aspect of the embodiments of the present disclosure, a cabinet device is provided, which comprises a cabinet, a drawer, and the transmission device described above. The cabinet is provided with a storage cavity, and the drawer is telescopically arranged in the storage cavity. The carrier is fixed to the cabinet, and the telescopic component is in driving connection with the drawer to drive the drawer to move relative to the cabinet.

[0036] According to a fifth aspect of the embodiments of the present disclosure, a refrigerator is provided, which comprises a control device and the cabinet device described above. The control device is in communication connection with the motor.

[0037] The technical solutions provided by the embodiments of the present disclosure have at least the following beneficial effects:

[0038] The clutch provided by the present disclosure is used in the following way: the driving part is driven by the motor to drive the transmission part to rotate, the transmission part drives the clutch part to move towards the side wall of the accommodating groove, the clutch part is fixed with the side wall of the accommodating groove to form a transmission state, so that the driving part and the driven part are connected and fixed, and the driving part and the driven part can rotate synchronously. When the driving part no longer drives the transmission part to rotate, the transmission part no longer pushes the clutch part, and the clutch part can return to a separated state, so that the driving part and the driven part are separated. At this time, the driving part and the driven part are disconnected, and the driven part can rotate freely relative to the driving part under the action of an external force without dragging the driving part to rotate synchronously. In this way, the clutch provided by the present disclosure can realize linkage or separation of the driving part and the driven part through mechanical clutch transmission.

[0039] When the clutch of the present disclosure is applied to a transmission device between the door and the cabinet of a refrigerator, the mechanical clutch transmission between the driving part and the transmission part can realize automatic opening and closing of the door of the refrigerator by electric driving or manual operation of the user, and the two door opening and closing modes do not interfere with each other. Meanwhile, when the user manually opens and closes the door, the user does not need to drag the output shaft of the motor to rotate synchronously, and the resistance that the user experiences when manually opening and closing the door can be reduced. In this way, the load of the user when manually opening and closing the door can be reduced, so that the user can open and close the door with less effort, thereby improving the user experience. The clutch of the present disclosure can also be applied to automatic opening and closing of a drawer and a cabinet of a refrigerator, which will not be described here.

[0040] Alternatively, when the clutch of the present disclosure is applied to a transmission device between the drawer and the cabinet of a refrigerator, the mechanical clutch transmission between the driving part and the transmission part can realize automatic opening and closing of the door of the refrigerator by electric driving or manual operation of the user, and the two door opening and closing modes do not interfere with each other. Meanwhile, when the user manually opens and closes the drawer, the user does not need to drag the output shaft of the motor to rotate synchronously, and the resistance that the user experiences when manually opening and closing the drawer can be reduced. In this way, the load of the user when manually opening and closing the door can be reduced, so that the user can open and close the drawer with less effort, thereby improving the user experience. The clutch of the present disclosure can also be applied to automatic opening and closing of a drawer and a cabinet of a refrigerator, which will not be described here

[0041] Therefore, the clutch of the present disclosure operates through mechanical clutch transmission, has a simple structure, and is low in production cost.

[0042] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0043] The accompanying drawings, which constitute a part of the present disclosure, serve to provide a further understanding of the present disclosure, and the illustrative embodiments of the present disclosure and their description serve to explain the present disclosure, and cannot be construed as an improper limitation of the present disclosure.

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained based on these drawings without creative labor.

[0045] Figure 1 A structural schematic diagram of a clutch shown in an embodiment.

[0046] Figure 2 A structural schematic diagram of a clutch shown in an embodiment. Figure 1 A structural schematic diagram of a clutch shown in an embodiment.

[0047] Figure 3 A structural schematic diagram of a clutch shown in an embodiment. Figure 2 A structural schematic diagram of a clutch shown in an embodiment.

[0048] Figure 4 A structural schematic diagram of a clutch shown in an embodiment. Figure 1 A structural schematic diagram of a clutch shown in an embodiment.

[0049] Figure 5 A structural schematic diagram of a clutch shown in another embodiment in the present disclosure.

[0050] Figure 6 A structural schematic diagram of a clutch shown in an embodiment. Figure 5 A structural schematic diagram of a clutch shown in an embodiment.

[0051] Figure 7 A structural schematic diagram of a transmission device shown in an embodiment.

[0052] Figure 8 A structural schematic diagram of a cabinet device formed by assembling a drawer and a cabinet shown in an embodiment.

[0053] Figure 9 A structural schematic diagram of a cabinet device formed by assembling a drawer and a cabinet shown in an embodiment. Figure 8 A structural schematic diagram of a cabinet device formed by assembling a drawer and a cabinet shown in an embodiment.

[0054] Figure 10 A structural schematic diagram of a transmission device shown in another embodiment.

[0055] Figure 11 A structural schematic diagram of a cabinet device formed by assembling a drawer and a cabinet shown in an embodiment.

[0056] Figure 12 A structural schematic diagram of a cabinet device formed by assembling a drawer and a cabinet shown in an embodiment. Figure 10 A structural schematic diagram of a cabinet device formed by assembling a drawer and a cabinet shown in an embodiment.

[0057] Figure 13 A structural schematic diagram of a refrigerator shown in an embodiment.

[0058] Figure 14 For Figure 13 The refrigeration principle diagram of the refrigerator shown.

[0059] Reference signs:

[0060] 1, refrigerator; 10, door; 20, cabinet; 21, storage cavity; 30, transmission device; 31, bearing; 311, first end; 312, second end; 32, motor; 33, telescopic assembly; 331, rotating part; 332, telescopic part; 34, connecting rod mechanism; 341, first mounting part; 342, second mounting part; 343, connecting rod assembly; 35, driving rod; 36, shaft coupling; 40, clutch; 41, driving part; 42, driven part; 421, output part; 422, matching part; 4221, accommodating groove; 4222, limiting wall; 4223, first avoiding groove; 43, transmission assembly; 431, transmission part; 4311, mounting part; 4312, transmission part; 4312a, convex part; 4312b, concave part; 432, clutch part; 4321, clamping groove; 433, rotating part; 433a, matching groove; 4331, first limiting groove; 4332, cover; 4333, convex ridge; 4333a, second avoiding groove; 4334, magnetic part; 434, reset part; 44, protective shell; 441, magnetic attraction part; 45, bearing; 50, drawer; 60, compressor; 70, condenser; 80, evaporator; 90, throttling assembly. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments (or implementations) of the present disclosure will be described clearly and completely with reference to the accompanying drawings. When the following description refers to the drawings, the same numerals in different drawings represent the same or similar elements unless otherwise indicated.

[0062] If the terms related to directionality or positional relationship (such as up, down, left, right, front, back, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, height, counterclockwise, clockwise, axial, radial, circumferential, etc.) are involved in the embodiments of the present disclosure, such terms are only used to explain the relative positional relationship, motion condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directionality or positional relationship also changes accordingly. In addition, the terms “first”, “second”, etc. in the embodiments of the present disclosure are only used for convenience of description, and cannot be understood as indicating or implying relative importance.

[0063] With the development of social economy and the improvement of people's living standards, the refrigerator gradually becomes an indispensable household appliance in people's daily life. With the development of the diversification of the functions of the refrigerator, there are many types and brands of refrigerators, which makes many choices for consumers to choose a refrigerator. Only improving the cold preservation characteristics of the refrigerator cannot meet people's requirements for the refrigerator. The intelligence of the refrigerator also becomes an important factor affecting the competitiveness of the refrigerator. In the refrigerator with similar functions or performance, the higher the intelligence of the refrigerator, the more attractive it is to consumers to purchase.

[0064] The automatic opening and closing of the refrigerator as a basic function of the intelligent refrigerator is also more and more widely used. For example, the automatic opening or closing of the door of the refrigerator is more and more loved by consumers. For another example, the drawer of the refrigerator can be automatically opened or closed, which is convenient for users to take and place articles and is more and more loved by consumers.

[0065] In the related art, the refrigerator usually adopts an electric driving mode to realize automatic opening and closing. When using the electric driving mode, a clutch needs to be used to take into account the manual opening and closing. However, the transmission mode of the traditional clutch is complex, and the application cost is high, which leads to a high production cost of this type of refrigerator. For example, the traditional clutch needs other power sources to realize its separation or closing, which leads to a relatively bulky structure of the clutch and a complex transmission mode and a high application cost. Taking a clutch controlled by electromagnetic principle as an example, the clutch needs to control the combination and separation through the on-off of the current, so as to realize the transmission or cut-off of the power. If the power fails, the clutch function will be lost. Therefore, after the traditional clutch is applied to the refrigerator, the electric driving mode of the refrigerator needs to be provided with multiple power sources to ensure that the clutch can effectively act, which leads to a high production cost of this type of refrigerator.

[0066] Therefore, the present disclosure provides a clutch which can realize the automatic opening and closing of the refrigerator through a mechanical clutch transmission mode, can not interfere with the manual opening and closing operation of the user, can reduce the resistance received by the manual opening and closing of the user, and can enable the user to operate with less effort, so as to improve the user experience. In addition, the clutch provided by the present disclosure adopts a mechanical clutch transmission mode to act, which can simplify the structure and transmission mode of the clutch and reduce the failure rate and production cost of the clutch.

[0067] The clutch provided by the present disclosure will be described below with reference to the accompanying drawings.

[0068] Referring to Figures 1 to 4 , Figure 1 is a structural schematic view of the clutch shown in an embodiment. Figure 2 is Figure 1 is an A-A sectional view of the clutch in the disengaged state in the embodiment. Figure 3 is Figure 2 is a structural schematic view of the clutch in the transmission state in the embodiment. Figure 4 is Figure 1An exploded view of the clutch.

[0069] Referring to Figures 1 to 4 As shown, in some embodiments, the clutch 40 includes a driving member 41, a driven member 42, and a transmission assembly 43. The driven member 42 includes an output portion 421 and a matching portion 422 fixedly connected to the output portion 421, and the matching portion 422 is provided with a receiving groove 4221. The transmission assembly 43 includes a rotating member 433 rotatably arranged in the receiving groove 4221, a clutch member 432 in transmission cooperation with the transmission member 431, and a transmission member 431 fixedly connected to the driving member 41. The clutch member 432 is movably arranged on the rotating member 433, and the clutch member 432 has a transmission state in transmission cooperation with the matching portion 422 and a separation state separated from the matching portion 422, and the clutch member 432 can be reset to the separation state. The transmission member 431 can rotate relative to the rotating member 433 with the driving member 41 to push the clutch member 432 to the transmission state. When the clutch member 432 is in the transmission state, the driving member 41 can drive the transmission assembly 43 and the driven member 42 to rotate. When the clutch member 432 is in the separation state, the driven member 42 can rotate relative to the transmission assembly 43 and the driving member 41.

[0070] In use, the driving member 41 can be driven by the motor 32 to drive the transmission member 431 to rotate, which can push the clutch member 432 to move towards the side wall of the receiving groove 4221 to make the clutch member 432 in transmission cooperation with the side wall of the receiving groove 4221 to form the transmission state, thereby realizing the connection and fixation of the driving member 41 and the driven member 42, so that the driving member 41 and the driven member 42 can rotate synchronously. When the driving member 41 is no longer driven to rotate the transmission member 431, the transmission member 431 no longer pushes the clutch member 432, and the clutch member 432 can be reset to the separation state, thereby realizing the separation of the driving member 41 and the driven member 42. At this time, the driving member 41 and the driven member 42 are disconnected, and the driven member 42 can be freely rotated relative to the driving member 41 by an external force without dragging the driving member 41 to rotate synchronously. Therefore, the clutch 40 provided by the present disclosure can realize the linkage or separation of the driving member 41 and the driven member 42 through the mechanical clutch transmission mode.

[0071] Therefore, the clutch 40 provided by the present disclosure operates through the mechanical clutch transmission mode, has a simple structure and low production cost.

[0072] It can be understood that the clutch 40 provided by the present disclosure has a compact structure, occupies a small installation space, can reduce the occupied space when installed in a refrigerator 1 or the like, and is beneficial to improving the appearance of the refrigerator 1.

[0073] It can be understood that the matching part 422 of the driven part 42 can be provided with a receiving groove 4221, and the transmission assembly 43 can be arranged in the receiving groove 4221, so as to save installation space while realizing mechanical clutch transmission, and the receiving groove 4221 can match the rotating part 433 to encapsulate the transmission part 431 and the clutch part 432, so as to protect the transmission part 431 and the clutch part 432.

[0074] It should be noted that the driving part 41 is used to be connected with the output shaft of the motor 32, and the driven part 42 is used to be connected with a movable assembly which can be driven by the motor 32 or manually driven by a user. For example, when it is required to drive the drawer 50 of the refrigerator 1 to be automatically opened and closed, the movable assembly can be the drawer 50 of the refrigerator 1. Or, when it is required to drive the cabinet door 10 of the refrigerator 1 to be automatically opened and closed, the movable assembly can be the cabinet door 10 of the refrigerator 1. The movable assembly can be any part which a user wants to be automatically or manually opened and closed, and the user can select a corresponding movable assembly according to actual use requirements, which is not limited in the application. The transmission assembly 43 is used to be intermittently connected between the driving part 41 and the driven part 42. When the transmission assembly 43 connects and fixes the driving part 41 and the driven part 42, the motor 32 can drive the driving part 41 and the driven part 42 to rotate synchronously, so as to drive the movable assembly to be automatically opened and closed. When the transmission assembly 43 separates the driving part 41 and the driven part 42, the driven part 42 can not be controlled to rotate by the motor 32, and the user can manually open and close the movable assembly.

[0075] Referring to Figure 2 and Figure 3 , Figure 3 is Figure 1 a sectional view of the clutch in the disengaged state along A-A in Figure 3 is Figure 2 a structural schematic view of the clutch in the transmission state in Figure 2 In , since the clutch part 432 is in the disengaged state, the movement of the driven part 42 in the counterclockwise direction or the clockwise direction does not interfere with the movement of the driving part 41. That is, the driven part 42 can rotate relative to the transmission assembly 43 and the driving part 41, which facilitates manual operation of the user.

[0076] When the transmission part 431 is driven by the driving part 41 to rotate in the clockwise direction in Figure 3 , the transmission part 431 can push the clutch part 432 to switch from the disengaged state to the transmission state. When the clutch part 432 is in transmission cooperation with the matching part 422, the clutch part 432 switches to the transmission state. At this time, the driving part 41 can drive the transmission assembly 43 and the driven part 42 to rotate, as shown in Figure 3 . At this time, the motor 32 drives the driving part 41, and drives the driven part 42 and the transmission assembly 43 to rotate synchronously.

[0077] When the motor 32 stops outputting torque, the clutch member 432 is separated from the matching portion 422 under the restoring force, and is restored to Figure 4 the separated state as shown.

[0078] As shown in Figure 1 some embodiments, the driving member 41 can be a driving shaft extending along the X direction, and the two ends of the driving shaft are connected to the output shaft of the motor 32 and the transmission member 431 respectively, so as to transmit the power of the motor 32 to the transmission member 431, and then transmit the power to the driven member 42 through the transmission assembly 43, so as to automatically open and close the movable assembly. In some embodiments, the driving shaft and the transmission member 431 can be integrally formed or have an interference fit, so as to facilitate the transmission of the power of the motor 32 to the transmission member 431.

[0079] In some embodiments, the driving shaft and the output shaft of the motor 32 can be connected through a shaft coupling 36. In this way, the shaft coupling 36 makes the connection more flexible.

[0080] In some embodiments, the output portion 421 of the driven member 42 is used to connect with the movable assembly, and the matching portion 422 of the driven member 42 is used to cooperate with the clutch member 432. The driven member 42 can be coaxially arranged with the driving shaft along the X direction, so as to facilitate the transmission of the rotating power of the motor 32.

[0081] It should be noted that the clutch member 432 and the matching portion 422 can be connected in various ways, including but not limited to meshing transmission, clamping transmission, stop transmission, friction transmission, etc.

[0082] As shown in Figure 3 some embodiments, the transmission member 431 can push the clutch member 432, so that the clutch member 432 is frictionally fixed with the side wall of the accommodating groove 4221, so that the clutch member 432 is in the transmission state. In this way, the clutch member 432 and the matching portion 422 are in transmission by frictionally fixing the clutch member 432 with the side wall of the accommodating groove 4221, so that the clutch member 432 is switched to the transmission state. By using the frictional transmission mode, the transmission reliability of the clutch 40 can be improved, and the transmission precision between the transmission member 431 and the clutch member 432 can be reduced.

[0083] In some embodiments, at least one of the outer side wall of the clutch member 432 and the side wall of the accommodating groove 4221 is provided with a friction layer (not shown). In this way, the friction layer can effectively increase the static friction between the clutch member 432 and the side wall of the accommodating groove 4221, and improve the transmission reliability of the clutch 40.

[0084] In some embodiments, the maximum static friction force generated by the frictional fixing of the clutch member 432 and the side wall of the accommodating groove 4221 is equal to the maximum output power of the output portion 421. In this way, the clutch 40 can reliably output the maximum power, and the clutch member 432 and the accommodating groove 4221 are prevented from being damaged due to the excessive frictional force.

[0085] In some embodiments, a plurality of clutch members 432 are arranged on the rotating member 433 along the circumferential direction of the transmission member 431. In this way, when the clutch members 432 are frictionally fixed with the side wall of the accommodating groove 4221, the stress uniformity can be improved by the frictional engagement of the plurality of clutch members 432 and the matching portion 422, and the transmission is more stable.

[0086] Alternatively, in some embodiments, the clutch member 432 is in sliding engagement with the rotating member 433 and can reciprocate along the radial direction of the rotation axis of the driving member 41 to switch between the transmission state and the separation state. In this way, the distance of the clutch member 432 switching between the transmission state and the separation state is shorter, and the transmission switching is more rapid.

[0087] As shown in Figure 2 and Figure 3 In some embodiments, the rotating member 433 is provided with a first limiting groove 4331 for limiting the clutch member 432. In this way, the clutch member 432 can be reliably limited in the accommodating groove 4221 by the first limiting groove 4331, and the transmission reliability of the clutch 40 is improved.

[0088] Alternatively, as shown in Figure 4 In some embodiments, the rotating member 433 includes a cover 4332 covering the accommodating groove 4221 and at least two convex ridges 4333 protruding from the cover 4332, the convex ridges 4333 are inserted into the accommodating groove 4221, and the first limiting groove 4331 is formed by the interval arrangement of the adjacent two convex ridges 4333. In this way, the accommodating cavity is shielded by the cover 4332 to better protect the transmission member 431 and the clutch member 432. The first limiting groove 4331 is formed by the convex ridges 4333, which is easy to implement. One rotating member 433 can be used to limit a plurality of clutch members 432.

[0089] Further, in some embodiments, the matching portion 422 includes a limiting wall 4222 (not shown) arranged in the accommodating groove 4221, and the limiting wall 4222 is arranged in the interval of the cover 4332 to limit the axial movement of the clutch member 432 along the driving member 41. In this way, the axial movement of the clutch member 432 along the driving member 41 is limited by the cooperation of the limiting wall 4222 and the cover 4332, which can not only ensure the accuracy of the movement of the clutch member 432, but also make the clutch 40 compact.

[0090] In some embodiments, the transmission member 431 may be configured as a non-circular structure such as a cam, elliptical cylinder or prism, so that the rotation of the transmission member 431 can drive the clutch member 432 to slide back and forth relative to the rotating member 433, thereby enabling the clutch member 432 to have a transmission state and a disengagement state.

[0091] like Figure 2 as well as Figure 3 As shown, in some embodiments, to facilitate the movement of the clutch 432 by the transmission member 431, the transmission member 431 includes a mounting portion 4311 connected to the driving member 41 and a transmission portion 4312 connected to the mounting portion 4311. The rotating member 433 is provided with a mating groove 433a for the transmission portion 4312 to move within the mating groove 433a. The transmission portion 4312 includes a plurality of protrusions 4312a connected to the mounting portion 4311 and a recess 4312b disposed between two adjacent protrusions 4312a, with each recess 4312b corresponding to a clutch 432. When the clutch 432 presses against the protrusions 4312a, the clutch 432 is in a transmission state. When a portion of the clutch 432 is inserted into the recess 4312b, the clutch 432 is in a disengaged state. Thus, when the clutch 432 is in the transmission state, the protrusion 4312a of the transmission part 4312 can press against the protrusion of the clutch 432 to increase the movement distance of the clutch 432, allowing the clutch 432 to press against the bottom wall of the slot 4321, thereby increasing the reliability of the connection between the clutch 432 and the driven member 42. When the clutch 432 is in the disengaged state, the recess 4312b of the transmission part 4312 can accommodate the protrusion of the clutch 432, allowing the clutch 432 to separate from the bottom wall of the slot 4321, thereby disconnecting the connection with the driven member 42.

[0092] Furthermore, it is understandable that by using the mating groove 433a to accommodate the transmission part 4312, it is easier to fully utilize the internal space of the rotating part 433 to integrate the transmission part 4312, making the fit between the rotating part 433 and the transmission part 431 tighter.

[0093] In some embodiments, the transition between the protrusion 4312a and the recess 4312b is rounded. This allows the clutch 432 to switch smoothly between the driven and disengaged states.

[0094] In some embodiments, a plurality of clutch members 432 can be provided, and the transmission member 431 can be provided with a plurality of transmission portions 4312 corresponding to the number of clutch members 432, so as to respectively push the clutch members 432 to the transmission state, so as to increase the connection area between the driving member 41 and the driven member 42, and improve the reliability of synchronous rotation. For example, the clutch members 432 can be provided in one, two, three, or four or the like, and the transmission member 431 can be provided in one. The transmission member 431 can be provided with one, two, three, or four or the like corresponding to the number of clutch members 432, and the present disclosure is not limited thereto.

[0095] As shown in Figures 2 to 4 , in some embodiments, the transmission assembly 43 further comprises a reset member 434, which is arranged on at least one of the clutch member 432, the rotating member 433, and the matching portion 422, so that the clutch member 432 can be reset to the separation state.

[0096] In some embodiments, a plurality of clutch members 432 are arranged on the rotating member 433 along the circumference of the transmission member 431. The reset member 434 comprises an elastic ring, and the plurality of clutch members 432 are all tightened on the transmission member 431 or the rotating member 433 by the elastic ring, so that the clutch member 432 can be elastically reset to the separation state. In this way, the plurality of clutch members 432 can be tightened on the transmission member 431 or the rotating member 433 by the elastic ring, so that the structure of the clutch 40 is more compact. When the clutch member 432 is in the transmission state, the elastic ring is stretched and deformed to generate an elastic reset force, so that the clutch member 432 can be elastically reset to the separation state.

[0097] The elastic ring comprises a silica gel ring, an annular spring, or the like.

[0098] As shown in Figure 4 , in some embodiments, the clutch member 432 is provided with a clamping groove 4321 for mounting the elastic ring, and at least part of the elastic ring is clamped in the clamping groove 4321. In this way, the elastic ring can be mounted by the clamping groove 4321, and the elastic ring is prevented from moving randomly, so as to improve the reliability of the elastic reset of the clutch member 432.

[0099] Optionally, in some embodiments, the elastic ring is completely embedded in the clamping groove 4321. In this way, the arrangement of the elastic ring does not interfere with the frictional and fixed fitting between the clutch member 432 and the magnetic member 4334.

[0100] Optionally, as shown in Figure 4 , in some embodiments, the side wall of the accommodating groove 4221 is provided with a first avoiding groove 4223 for avoiding the elastic ring. In this way, the elastic ring is avoided by the first avoiding groove 4223, so that the arrangement of the elastic ring does not interfere with the frictional and fixed fitting between the clutch member 432 and the magnetic member 4334.

[0101] As shown in Figure 4As shown, in some embodiments, the rotating member 433 includes a cover 4332 covering the accommodating groove 4221 and at least two convex ridges 4333 protruding from the cover 4332, the convex ridges 4333 are inserted into the accommodating groove 4221, and the adjacent two convex ridges 4333 are arranged at intervals to form a first limiting groove 4331 limiting the clutch member 432. The convex ridges 4333 are provided with a second avoiding groove 4333a avoiding the elastic ring. In this way, by providing the second avoiding groove 4333a to avoid the elastic ring, the elastic ring can reliably bind the clutch member 432 on the transmission member 431, avoiding random movement to generate noise.

[0102] Optionally, in some embodiments, the clutch member 432 is in a cylindrical shape, and the clamping groove 4321 is an annular groove.

[0103] In other embodiments, the reset member 434 can also be a magnetic attraction assembly, and the magnetic attraction force between the magnetic attraction assembly can reset the clutch member 432 to the separated state. For example, the rotating member 433 is provided with a first magnetic attraction member 441 (not shown), and the clutch member 432 is provided with a second magnetic attraction member 441 (not shown) cooperating with the first magnetic attraction member 441. The first magnetic attraction member 441 and the second magnetic attraction member 441 are separated in the transmission state, and the magnetic attraction reset force generated by the first magnetic attraction member 441 and the second magnetic attraction member 441 can magnetically attract the clutch member 432 to reset to the separated state.

[0104] Of course, in other embodiments, a magnetic repulsion assembly can also be used to generate a magnetic repulsion reset force, so that the clutch member 432 can be magnetically repelled to reset to the separated state.

[0105] In addition, the present disclosure is not limited to the above-mentioned embodiments. Figure 2 and Figure 3 As shown, the transmission state and the separated state of the clutch 40 are taken as examples by arranging the driven member 42 outside the driving member 41, and in other embodiments, the driving member 41 can also be arranged outside the driven member 42, and the present disclosure is not limited thereto.

[0106] As shown in Figure 5 and Figure 6 In some embodiments, the clutch 40 further includes a protective shell 44, and the driving member 41, the driven member 42 and the transmission assembly 43 are rotatably encapsulated in the protective shell 44. At least part of the driving member 41 is exposed outside the protective shell 44, and at least part of the driven member 42 is exposed outside the protective shell 44. In this way, the protective shell 44 is used to protect the driving member 41, the driven member 42 and the transmission assembly 43, to avoid external particles and other impurities entering the transmission structure, causing the clutch 40 to be stuck. It is also convenient to lubricate, reduce the wear between the transmission structures, and improve the durability of the clutch 40.

[0107] Optionally, as Figure 6As shown, in some embodiments, the protective shell 44 and one of the rotating member 433 are provided with a magnetic attraction member 441, and the other is provided with a magnetic member 4334 which is magnetically attracted to the magnetic attraction member 441. When the clutch member 432 is in the disengaged state, the magnetic attraction member 441 is magnetically attracted to the magnetic member 4334 to limit the movement of the rotating member 433 relative to the protective shell 44. The elastic ring can reliably tighten the clutch member 432 on the transmission member 431, avoiding noise caused by random movement.

[0108] Optionally, the rotating member 433 is provided with an annular magnetic member 4334, and the protective shell 44 is provided with a plurality of magnetic attraction members 441.

[0109] The magnetic attraction member includes a magnet, an electromagnet, a magnetite, etc. which can generate a magnetic attraction force. The magnetic member can be magnetically attracted to the magnetic attraction member, including a magnet, iron, etc.

[0110] Referring to Figure 6 As shown, one of the mounting portion and the driving member is provided with a shaft (not labeled), and the other is provided with a matching hole (not labeled) in transmission connection with the shaft.

[0111] The shaft includes a non-cylindrical body, and the matching hole is adapted to the non-cylindrical body. For example, the shaft includes an elliptical shaft, a polygonal shaft, a semi-cylindrical shaft, etc. which can achieve the transmission connection between the transmission member and the driving member.

[0112] In some embodiments, at least one of the protective shell, the driving member and the driven member can also be provided with an axial positioning portion to limit the movement of the transmission assembly along the axial direction of the driving member. The axial positioning portion can be a stepped portion protruding from the inner wall of the protective shell, or a stepped portion protruding from the driving member, or a stepped portion protruding from the driven member, which is not limited in the present disclosure.

[0113] In some embodiments, the driving member and the driven member are respectively connected to the protective shell through bearings (not labeled). In addition, at least part of the driving member is exposed outside the protective shell to facilitate the connection of the output shaft of the motor. At least part of the driven member is exposed outside the protective shell to facilitate the connection of the movable assembly such as the box door assembly or the shaft assembly.

[0114] Referring to Figure 7 , Figure 7This is a schematic diagram of the transmission device according to one embodiment of the present disclosure. In some embodiments, the present disclosure also provides a transmission device 30, including a support member 31, a motor 32, a telescopic assembly 33, and a clutch 40 in any of the above embodiments. The support member 31 includes a first end 311 and a second end 312 disposed opposite to the first end 311. The motor 32 is disposed at the first end 311, and the motor 32 includes an output end that is drively connected to the driving member 41. The telescopic assembly 33 includes a rotating member 331 rotatably disposed on the support member 31 and a telescopic member 332 that cooperates with the rotating member 331, and the rotating member 331 is drively connected to the driven member 42. In the transmission state, the motor 32 can drive the telescopic member 332 to move toward or away from the second end 312 through the clutch 40. In the disengaged state, the motor 32 is disconnected from the telescopic assembly 33.

[0115] See Figure 8 and Figure 9 , Figure 8 This is a structural diagram of a cabinet device formed by assembling drawers and cabinets. Figure 9 for Figure 8 A schematic diagram of the middle drawer open relative to the cabinet. This disclosure is provided to better understand the assembly relationship between the cabinet 20 and the drawer 50. Figure 12 Partial details of the cabinet 20 have been omitted for illustration purposes. In this embodiment, the cabinet includes a cabinet 20, a drawer 50, and the transmission device 30 described in the previous embodiment. The cabinet 20 has a storage cavity 21, and the drawer 50 is retractably disposed within the storage cavity 21. A support member 31 is fixed to the cabinet 20, and a telescopic member 332 is drively connected to the drawer 50 to drive the drawer 50 to move relative to the cabinet 20.

[0116] When the transmission device 30 provided in this disclosure is applied to a cabinet device, the transmission device 30 can be installed between the drawer 50 and the cabinet 20 of the refrigerator 1 to realize the automatic opening and closing of the drawer 50 and the manual opening and closing of the drawer 50. The carrier member 31 is fixed to the cabinet 20, and the telescopic member 332 is fixedly connected to the drawer 50 to drive the drawer 50 to move relative to the cabinet 20. The first end 311 and the second end 312 of the carrier member 31 can be spaced apart along the direction shown in the figure (X). When the clutch 40 is in the transmission state, the motor 32 is connected to the telescopic member 33 through the clutch 40, and the motor 32 can drive the telescopic member 332 to move towards or away from the second end 312 to realize the electric drive automatic opening and closing of the drawer 50. When the clutch 40 is in the disengaged state, the motor 32 is disconnected from the telescopic member 33 through the clutch 40, and the user can manually open and close the drawer 50 without dragging the motor 32 to rotate. This ensures that the manual opening and closing of the drawer 50 and the electric opening and closing of the drawer 50 do not interfere with each other, thus reducing the manual load and allowing the user to open and close the drawer 50 with less effort, improving the user experience.

[0117] like Figure 7As shown, in some embodiments, to facilitate the conversion of the rotation of the motor 32 into driving force for the extension and retraction of the drawer 50, the extension and retraction assembly 33 can include a rotating member 331 rotatably arranged on the carrier 31 and an extension and retraction member 332 cooperating with the rotating member 331, the rotating member 331 being connected with the output shaft of the clutch 40, and the extension and retraction member 332 being connected with the drawer 50. When the clutch 40 is in the transmission state, the motor 32 is in driving connection with the extension and retraction assembly 33 to drive the extension and retraction member 332 to reciprocate along the rotating member 331, thereby driving the drawer 50 to open and close, so that the drawer 50 is opened or closed by the electric drive. When the clutch 40 is in the disengaged state, the motor 32 is disconnected from the extension and retraction assembly 33, so that the user can manually open and close the drawer 50, and the drawer 50 can drive the extension and retraction member 332 to reciprocate along the rotating member 331, but since the extension and retraction assembly 33 is disconnected from the motor 32 due to the clutch 40, the extension and retraction assembly 33 will not transmit the movement to the motor 32 end, so that the user does not need to drive the motor 32 end to rotate when opening and closing the drawer 50, thereby reducing the opening and closing resistance.

[0118] As an example, the extension and retraction assembly 33 can be arranged as a screw-nut pair. The rotating member 331 can be arranged as a screw, and the extension and retraction member 332 can be arranged as a nut threadedly connected with the screw. The rotation is converted into linear motion through the thread transmission between the screw and the nut, and then the rotation of the motor 32 is converted into driving force for the opening and closing of the drawer 50.

[0119] Referring to Figure 10 , Figure 10 The structural schematic diagram of the transmission device of another embodiment of the present disclosure is shown. In other embodiments, the transmission device further includes a linkage mechanism 34 and a driving rod 35. The linkage mechanism 34 includes a first mounting member 341, a second mounting member 342, and a linkage assembly 343 arranged between the first mounting member 341 and the second mounting member 342, and the second mounting member 342 is oscillated relative to the first mounting member 341 through the linkage assembly 343. The driving rod 35 is connected with the extension and retraction member 332, and the second end is provided with a connecting gap. The driving rod 35 is movably connected with the linkage mechanism 34 through the connecting gap to drive the second mounting member 342 to oscillate relative to the first mounting member 341.

[0120] Referring to Figure 11 , Figure 11 The structural schematic diagram of the cabinet device formed by the assembly of the cabinet door and the cabinet in the refrigerator of the present disclosure is shown. In this embodiment, the cabinet device includes the cabinet 20, the cabinet door 10 rotatably connected with the cabinet, and the transmission device 30 in the above-mentioned embodiments. The cabinet 20 is fixedly connected with the first mounting member 341, and the cabinet door 10 is fixedly connected with the second mounting member 342.

[0121] The transmission device 30 provided by the present disclosure is applied to the cabinet device, the connecting rod mechanism 34 can be installed between the cabinet door 10 and the cabinet 20, and the driving rod is driven by the telescopic assembly 33 to drive the connecting rod mechanism 34 to move, so as to realize the automatic opening and closing of the refrigerator cabinet door. Among them, the cabinet can be fixedly connected with the first mounting piece 341, the cabinet door 10 can be fixedly connected with the second mounting piece 342, and the connecting rod assembly 343 is connected between the first mounting piece 341 and the second mounting piece 342 and is driven by the telescopic assembly 33. The connecting gap of the carrier 31 can be connected with the driving rod and the telescopic piece. When the clutch is in the transmission state, the motor is in transmission connection with the telescopic assembly 33, the motor can drive the rotating piece to drive the telescopic piece to move, the telescopic piece drives the driving rod to drive the connecting rod assembly 343 to move, so that the second mounting piece 342 oscillates relative to the first mounting piece 341, so that the cabinet door can be driven by the motor to open or close relative to the cabinet, and the automatic opening and closing of the refrigerator is realized. When the clutch is in the disengaged state, the motor is disconnected from the telescopic assembly 33, and the user can manually open or close the cabinet door, and the cabinet door will not drag the motor end to rotate, so as to reduce the manual load, so that the user can open and close the cabinet door, and avoid the interference of the motor rotation with the manual opening and closing of the user.

[0122] In addition, in order to adapt to the rotary installation between the cabinet door 10 and the cabinet 20, the connecting rod assembly 343 can be integrally arranged with the hinge assembly between the cabinet door and the cabinet, and the present disclosure does not make any limitation. In addition, a shaft coupling or a gear reduction box can be arranged between the clutch and the output shaft of the motor, and the present disclosure does not make any repetition.

[0123] Referring to Figure 12 , Figure 12 It is a structural schematic view of the transmission device encapsulated by the carrier in the present disclosure. In some embodiments, in order to make the transmission device 30 installed in the cabinet device have an aesthetic appearance, the carrier 31 can be provided in a shell shape, and the second end is provided with a connecting gap to avoid the driving rod. The transmission device 30 can be encapsulated by the carrier 31, which can shield the parts of the transmission device 30 on one hand, so that the transmission device 30 has a neat appearance. On the other hand, it is also convenient to protect or lubricate the internal structure of the transmission device 30 by using the carrier 31.

[0124] In some embodiments, the present disclosure also provides a refrigerator 1, which comprises a control device and the cabinet device in any of the above embodiments. Thus, the refrigerator 1 provided by the present disclosure can realize the intelligent automatic opening and closing between the cabinet door 10 and the cabinet 20, or between the cabinet 20 and the drawer 50 by the mechanical clutch transmission mode, and can not interfere with the user to manually open and close the cabinet door 10, reduce the resistance of the user to manually open and close the cabinet door 10, and improve the user experience.

[0125] It should be noted that the control device includes a controller built in the refrigerator 1. For example, a controller such as an MCU (micro control unit), a PLC (programmable logic controller), a CPU (central controller), or a single chip microcomputer. The controller built in the refrigerator 1 can be linked with the start-stop of the motor 32, and the present application is not limited in this regard.

[0126] In some embodiments, the refrigerator 1 includes movable parts such as the door 10 and the drawer 50 that are movable relative to the cabinet 20. In this way, the transmission device 30 is installed between the cabinet 20 and the movable parts, so that the automatic opening and closing and the manual opening and closing of the movable parts relative to the cabinet 20 can be achieved, and the present application is not limited in this regard.

[0127] It can be understood that when the clutch is in the transmission state, the driving part can drive the driven part to rotate. When the clutch is in the disengaged state, the driven part can rotate relative to the driving part, and manual operation can be achieved. Compared with other electric clutches or electromagnetic clutches, the mechanical clutch of the present application can achieve the automatic opening and closing and the manual opening and closing of the movable parts relative to the cabinet, reduces the power device and the sensor device, and is conducive to reducing the cost of the refrigerator.

[0128] As shown in Figure 13 and Figure 14 In some embodiments, the refrigerator 1 further includes a compressor 60, a condenser 70, an evaporator 80, and a throttling assembly 90. The cabinet 20 further includes a freezing compartment and a refrigerating compartment. The compressor 60, the condenser 70, the evaporator 80, and the throttling assembly 90 are respectively arranged in the cabinet 20, and at least part of the evaporator 80 is arranged in the freezing compartment.

[0129] In combination with Figure 14 As shown in the figure, when the refrigerator 1 is running, the compressor 60 outputs high-temperature and high-pressure gaseous refrigerant to the condenser 70, and the high-temperature and high-pressure gaseous refrigerant is condensed into medium-temperature and high-pressure refrigerant by the condenser 70. The medium-temperature and high-pressure refrigerant is expanded and throttled by the throttling assembly 90, so that the pressure and temperature of the refrigerant are further reduced, and the low-temperature and low-pressure liquid refrigerant flows out of the throttling assembly 90 to the evaporator 80. The low-temperature and low-pressure liquid refrigerant evaporates into gaseous refrigerant in the evaporator 80. At least part of the evaporator 80 is arranged in the freezing compartment, so that the refrigerant absorbs a large amount of heat in the freezing compartment during the evaporation process, thereby reducing the temperature in the freezing compartment, facilitating the freezing of articles in the freezing compartment, and achieving the refrigeration of the refrigerator 1. The refrigerant from the evaporator 80 is supplemented back to the compressor 60 to form a refrigerant loop. In this way, the refrigerant continuously circulates in the refrigerant loop to maintain the freezing environment (e.g., less than -1℃) of the freezing compartment.

[0130] In some embodiments, a air duct is provided between the refrigerating compartment and the freezing compartment, so that part of the cold air in the freezing compartment can be transported into the refrigerating compartment through the air duct to reduce or maintain the low-temperature environment (e.g., 2℃-8℃) of the refrigerating compartment.

[0131] In some embodiments, the freezing compartment is arranged below the refrigerating compartment along the height direction of the refrigerator. The refrigerator further comprises a first fan (not labeled) arranged in the cabinet assembly. The air inlet end or the air outlet end of the first fan is in communication with the air duct, for conveying part of the cold air of the freezing compartment into the refrigerating compartment.

[0132] The drawer is arranged in the refrigerating compartment and / or the freezing compartment.

[0133] It should be noted that when one element is considered to be "transmission connection" with another element, the two can be detachable connection or non-detachable connection, and the two can realize force transmission. For example, shaft connection, sleeve connection, clamping connection, integral forming, welding, etc. can be realized in traditional technology, and can be flexibly selected according to actual application needs. For example, one of the elements is provided with a non-cylindrical body, and the other element is provided with a matching hole for transmission cooperation with the non-cylindrical body. The non-cylindrical body includes a polygonal column, an elliptical column, a semi-cylindrical body, etc.

[0134] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present disclosure is not limited to the precise structure described in the above embodiments and shown in the drawings. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the scope of protection of the present disclosure.

Claims

1. A clutch, characterized by The transmission assembly comprises a rotating member rotatably arranged in the accommodating groove, a transmission member fixedly connected with the driving member, and a clutch member in transmission cooperation with the transmission member; the clutch member is movably arranged on the rotating member, and has a transmission cooperation state with the cooperation portion and a separation state apart from the cooperation portion; the clutch member can be reset to the separation state. The transmission member can rotate relative to the rotating member along with the driving member to push the clutch member to the transmission cooperation state. When the clutch member is in the transmission cooperation state, the driving member can drive the transmission assembly and the driven member to rotate. When the clutch member is in the separation state, the driven member can rotate relative to the transmission assembly and the driving member. The transmission member can push the clutch member to be frictionally fixed with the sidewall of the accommodating groove, so that the clutch member is in the transmission cooperation state. The maximum static friction generated by the frictional fixing of the clutch member with the sidewall of the accommodating groove is equal to the maximum output power of the output portion. At least one of the outer sidewall of the clutch member and the sidewall of the accommodating groove is provided with a friction layer. The clutch member comprises a plurality of members and is arranged on the rotating member in a circumferential direction.

2. The clutch of claim 1, wherein The clutch member is in sliding cooperation with the rotating member and can reciprocate in the radial direction of the rotating axis of the driving member to switch between the transmission cooperation state and the separation state.

3. The clutch of claim 2, wherein, The rotating member is provided with a first limiting groove for limiting the clutch member.

4. The clutch of claim 2, wherein, The rotating member comprises a cover covering the accommodating groove and at least two convex ridges protruding from the cover, the convex ridges are inserted into the accommodating groove, and adjacent two convex ridges are arranged at intervals to form the first limiting groove.

5. The clutch of claim 2, wherein, The cooperation portion comprises a limiting wall arranged in the accommodating groove, and the limiting wall is arranged at intervals with the cover to limit the axial movement of the clutch member.

6. The clutch of claim 5, wherein, The transmission member comprises a mounting portion in transmission cooperation with the driving member and a transmission portion connected with the mounting portion, the rotating member is provided with a cooperation groove for the transmission portion, and the transmission portion can rotate in the cooperation groove.

7. The clutch of claim 5 wherein, The transmission portion comprises a plurality of convex portions connected with the mounting portion and a concave portion arranged between two adjacent convex portions, and the concave portion corresponds to the clutch member; 8. The clutch of claim 7, wherein, When the clutch member is pressed against the convex portion, the clutch member is in the transmission cooperation state; 9. The clutch of claim 8, wherein, When part of the clutch member is inserted into the concave portion, the clutch member is in the separation state.

10. The clutch of claim 1, wherein, The convex portion and the concave portion are arranged in a smooth transition; And / or, the clutch member is in the form of a rotor. The transmission assembly further comprises a reset member arranged in at least one of the clutch member, the rotating member and the cooperation portion, so that the clutch member can be reset to the separation state. ​ 11. The clutch of claim 10, wherein, ​ ​ 12. The clutch of claim 1, wherein, ​ 13. The clutch of claim 12, wherein, A plurality of the clutch members are arranged on the rotating member in a circumferential direction of the transmission member; the reset member comprises an elastic ring, and the plurality of clutch members are clamped on the transmission member or the rotating member by the elastic ring, so that the clutch members can be elastically reset to the separated state.

14. The clutch of claim 13, wherein, The clutch member is provided with a clamping groove for mounting the elastic ring, and at least part of the elastic ring is clamped in the clamping groove.

15. The clutch of claim 14, wherein, The elastic ring is completely embedded in the clamping groove. Alternatively, the side wall of the accommodating groove is provided with a first avoiding groove for avoiding the elastic ring.

16. The clutch of claim 14, wherein, The rotating member comprises a cover body covering the accommodating groove and at least two convex ridges protruding from the cover body, the convex ridges are inserted into the accommodating groove, and adjacent two convex ridges are arranged in a spaced manner to form a first limiting groove for limiting the clutch member; the convex ridges are provided with a second avoiding groove for avoiding the elastic ring.

17. The clutch of claim 14, wherein, The clutch member is in a cylindrical shape, and the clamping groove is an annular groove.

18. The clutch of any one of claims 1 to 17, wherein, The clutch further comprises a protective shell, and the driving member, the driven member and the transmission assembly are respectively rotatably encapsulated in the protective shell; at least part of the driving member is exposed outside the protective shell, and at least part of the driven member is exposed outside the protective shell.

19. The clutch of claim 18, wherein, One of the protective shell and the rotating member is provided with a magnetic attraction member, and the other is provided with a magnetic member magnetically attracted to the magnetic attraction member; when the clutch member is in the separated state, the magnetic attraction member and the magnetic member are magnetically attracted to each other to limit the movement of the rotating member relative to the protective shell.

20. A transmission, characterized by The clutch comprises a bearing member, a motor, a telescopic assembly and any one of claims 1 to 19. The bearing member comprises a first end and a second end arranged opposite to the first end; The motor is arranged at the first end, and the motor comprises an output end in transmission connection with the driving member; The telescopic assembly comprises a rotating member rotatably arranged on the bearing member and a telescopic member in cooperation with the rotating member, and the rotating member is in transmission connection with the driven member; In the transmission state, the motor can drive the telescopic member to move towards or away from the second end through the clutch; In the separated state, the motor is disconnected from the telescopic assembly.

21. The transmission of claim 20, wherein, The transmission device further comprises a connecting rod mechanism and a driving rod; the connecting rod mechanism comprises a first mounting member, a second mounting member and a connecting rod assembly arranged between the first mounting member and the second mounting member, and the second mounting member is swung relative to the first mounting member through the connecting rod assembly; The driving rod is connected with the telescopic member, the second end is provided with a connecting gap, and the driving rod passes through the connecting gap and is movably connected with the connecting rod mechanism to drive the second mounting member to swing relative to the first mounting member.

22. A cabinet apparatus, characterized by, The transmission device comprises a box body, a box door rotatably connected with the box body and the transmission device of claim 21; the box body is fixedly connected with the first mounting member, and the box door is fixedly connected with the second mounting member.

23. A box apparatus, characterized by The box includes a box body provided with a storage cavity, a drawer telescopically arranged in the storage cavity, a carrier fixed to the box body, and a telescopic member in driving connection with the drawer to drive the drawer to move relative to the box body.

24. A refrigerator characterized by comprising: The box device includes a control device in communication connection with the motor.

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