Clutch, transmission device, box equipment and refrigerator

Abstract

The utility model 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 transmission assembly comprises a matching part, a clutch part and an electromagnetic coil, the matching part is in transmission connection with one of the driving part and the driven part, the clutch part is in transmission connection with the other one of the driving part and the driven part, and the clutch part can stretch out and draw back in the rotation axis direction of the driving part; the clutch piece has a transmission state in transmission fit with the matching piece and a separation state separated from the matching piece, and the clutch piece can be reset to the separation state. The electromagnetic coil is arranged on the outer side of the matching piece in a sleeving mode and can generate magnetic attraction force for driving the clutch piece to be in transmission fit with the matching piece after being powered on. 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 box device and a refrigerator. Background Art

[0002] With the development of society and the improvement of people's living standards, refrigerators have gradually become an indispensable household appliance in people's daily lives. As intelligent technology continues to expand into the home appliance field, consumers are increasingly demanding ease of use and intelligent features in their home appliance experience. As a fundamental function of refrigerator intelligence, automatic refrigerator opening and closing is also becoming increasingly widely used.

[0003] In related technologies, refrigerators typically use electric drive to achieve automatic opening and closing. However, when using electric drive, a clutch is also required to facilitate manual opening and closing. However, the traditional clutch transmission method is complex and the application cost is high, resulting in high production costs for these refrigerators. Utility Model Content

[0004] In view of this, the present disclosure provides a clutch, a transmission device, a box device and a refrigerator. The clutch can meet the intelligent opening and closing requirements of the refrigerator without interfering with the user's manual opening and closing operations. At the same time, it has a simple structure and can reduce production costs.

[0005] Specifically, the present disclosure is achieved through the following technical solutions:

[0006] According to a first aspect of an embodiment of the present disclosure, there is provided a clutch comprising an active member, a driven member and a transmission assembly. The transmission assembly comprises a mating member, a clutch member and an electromagnetic coil, wherein the mating member is in transmission connection with one of the active member and the driven member, and the clutch member is in transmission connection with the other of the active member and the driven member, and the clutch member can be extended and retracted along the rotation axis direction of the active member, and has a transmission state in which it is in transmission cooperation with the mating member and a separation state in which it is separated from the mating member, and the clutch member can be reset to the separation state. The electromagnetic coil is sleeved on the outside of the mating member, and when the electromagnetic coil is energized, it can generate a magnetic attraction force that drives the clutch member to engage in transmission cooperation with the mating member. When the clutch member is in the transmission state, the active 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 active member.

[0007] The technical solution of the present disclosure is further described below:

[0008] In one embodiment, the clutch member is made of a soft magnetic material, and the electromagnetic coil is spirally wound around the outer side of the mating member. When the electromagnetic coil is energized, the mating member and the clutch member are magnetically attracted to each other.

[0009] In one embodiment, the engaging member is disposed on the driving member, and the clutch member is disposed on the driven member. The driven member is provided with a first non-cylindrical body, and the clutch member is provided with a first engaging hole. The first non-cylindrical body is in driving engagement with the first engaging hole, so that the clutch member drives the driven member to rotate. The first non-cylindrical body is in sliding engagement with the first engaging hole along the rotational direction of the driven member.

[0010] In one embodiment, the engaging member is disposed on the driven member, and the clutch member is disposed on the driving member. The driving member is provided with a second non-cylindrical body, and the clutch member is provided with a second engaging hole. The second non-cylindrical body engages with the second engaging hole in a transmission manner so that the driving member drives the clutch member to rotate. The second non-cylindrical body slides in engagement with the second engaging hole in the direction of rotation of the driving member.

[0011] In one embodiment, one of the mating member and the clutch member is provided with a slot, and the other of the mating member and the clutch member is provided with a latching block. When the clutch member is in a transmission state, the latching block engages with the slot. When the clutch member is in a disengaged state, the latching block separates from the slot.

[0012] In one embodiment, the transmission assembly further includes a reset member, which is disposed on at least one of the mating member and the clutch member, so that the clutch member can be reset to a disengaged state.

[0013] In one embodiment, the reset member includes an elastic member, and the clutch member can be elastically reset to the disengaged state through the elastic member.

[0014] In one embodiment, the elastic member includes a conical spring, the mating member is provided with a mounting groove and a connecting column arranged in the mounting groove, the clutch member is provided with an assembly groove corresponding to the mounting groove and a mating column arranged in the assembly groove, and the conical spring is sleeved between the connecting column and the mating column.

[0015] In one embodiment, the clutch further comprises a protective housing having a protective cavity, wherein the driving member, the driven member, and the transmission assembly are rotatably enclosed within the protective cavity. At least a portion of the driving member is exposed outside the protective housing, and at least a portion of the driven member is exposed outside the protective housing.

[0016] According to a second aspect of an embodiment of the present disclosure, there is provided a transmission device comprising a carrier, a motor, a telescopic assembly and the above-mentioned clutch. The carrier 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 transmission-connected to the active member. The telescopic assembly comprises a rotating member rotatably arranged on the carrier and a telescopic member cooperating with the rotating member, and the rotating member is transmission-connected to the driven member. In the transmission state, the motor can drive the telescopic member to move toward or away from the second end through the clutch. In the separation state, the motor and the telescopic assembly are disconnected from the transmission.

[0017] In one embodiment, the transmission device further includes a linkage mechanism and a drive rod. The linkage mechanism includes a first mounting member, a second mounting member, and a linkage assembly disposed between the first and second mounting members, wherein the second mounting member swings relative to the first mounting member via the linkage assembly. The drive rod is connected to the telescopic member and has a connecting notch at its second end. The drive rod passes through the connecting notch and movably connects to the linkage mechanism to drive the second mounting member to swing relative to the first mounting member.

[0018] According to a third aspect of the embodiments of the present disclosure, a box device is provided, comprising a box, a box door rotatably connected to the box, and the transmission device of the aforementioned embodiment. The box is connected to a first mounting member, and the box door is connected to a second mounting member.

[0019] According to a fourth aspect of an embodiment of the present disclosure, a box device is provided, comprising a box, a drawer, and the aforementioned transmission device. The box has a storage cavity, and the drawer is retractably disposed within the cavity. A support member is fixed to the box, and a retractable member is connected to the drawer to drive the drawer to move relative to the box.

[0020] According to a fifth aspect of the embodiments of the present disclosure, a refrigerator is provided, comprising a control device and the above-mentioned cabinet device. The control device is communicatively connected to the motor.

[0021] The technical solutions provided by the embodiments of the present disclosure include at least the following beneficial effects:

[0022] When the clutch provided by the present disclosure is in use, the active part can be driven to rotate by the motor, and the transmission assembly is used to be intermittently connected between the active part and the driven part. When the transmission assembly connects and fixes the active part and the driven part, the motor can drive the active part and the driven part to rotate synchronously. When the transmission assembly separates the active part and the driven part, the driven part can be free from the rotation control of the motor and can rotate flexibly relative to the active part. Among them, taking the case where the matching part is installed on the active part and the clutch part is installed on the driven part as an example, when the active part is driven to rotate by the motor, the electromagnetic coil is energized to generate a magnetic field, so that the clutch part is moved toward the matching part by the magnetic attraction force and connected with the matching part, thereby realizing the linkage between the active part and the driven part through the connection between the clutch part and the matching part, that is, the motor can drive the active part and the driven part to rotate synchronously. When the motor no longer outputs torque, the active member stops rotating, the electromagnetic coil loses power, and no longer generates a magnetic field, causing the magnetic attraction between the clutch member and the mating member to disappear. The clutch member can then return to a separated state from the mating member, thereby separating the active member from the driven member. The active member and the driven member are disconnected from each other, and the driven member can rotate freely relative to the active member under external force without dragging the active member to rotate synchronously. In this way, the clutch provided by the present disclosure can achieve the linkage or separation of the active member and the driven member.

[0023] When the clutch disclosed herein is applied to the transmission device between the door and the refrigerator body, the driven member can be used to connect the door assembly. When the driving member and the driven member rotate synchronously, the refrigerator door can be automatically opened and closed by electric drive. When the driving member and the driven member are disconnected from the transmission, the user can manually open and close the door, and the two opening and closing methods of the refrigerator door do not interfere with each other. At the same time, when the user manually opens and closes the door, the user does not need to drag the motor end to rotate synchronously, which can reduce the resistance encountered when the user manually opens and closes the door. This can reduce the load on the user when manually opening and closing the door, allowing the user to open and close the door with less effort, thereby improving the user experience.

[0024] The clutch disclosed herein can also be used to automatically open and close refrigerator drawers and refrigerator cabinets. The driven member connects the drawer assembly, and when the driving and driven members rotate synchronously, the refrigerator drawer can be automatically opened and closed electrically. When the driving and driven members are disconnected, the drawer can be opened and closed manually by the user, but this disclosure does not elaborate further.

[0025] Therefore, the clutch provided by the present disclosure can realize the automatic opening and closing of the refrigerator and the manual opening and closing operation of the user. At the same time, the transmission structure and transmission method of the clutch disclosed by the present disclosure are simple and the production cost is low.

[0026] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which constitute a part of the present disclosure, are used to provide a further understanding of the present disclosure. The exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation to the present disclosure.

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 Schematic diagram of the structure of a clutch shown in one embodiment.

[0030] Figure 2 for Figure 1 The clutch is shown in cross-section along AA (clutch in disengaged state).

[0031] Figure 3 for Figure 2 The schematic diagram of the structure of the clutch is in the transmission state.

[0032] Figure 4 Schematic diagram of the structure of a clutch member shown in one embodiment.

[0033] Figure 5 Schematic diagram of the structure of the matching component shown in one embodiment.

[0034] Figure 6 for Figure 1 An exploded view of the clutch is shown from one perspective.

[0035] Figure 7 for Figure 1 An exploded view of the clutch is shown from another perspective.

[0036] Figure 8 This is a schematic structural diagram of a clutch mounting protective housing according to an embodiment.

[0037] Figure 9 for Figure 8 The schematic diagram of the clutch structure without the protective shell is shown.

[0038] Figure 10 FIG. 1 is a schematic structural diagram of a transmission device shown in an embodiment.

[0039] Figure 11 This is a partial structural diagram of a cabinet device formed by assembling a drawer and a cabinet of a refrigerator shown in one embodiment.

[0040] Figure 12 for Figure 11 Schematic diagram of the structure of the drawer shown being opened relative to the box body.

[0041] Figure 13 FIG. 1 is a schematic structural diagram of a transmission device shown in another embodiment.

[0042] Figure 14 The figure is a structural diagram of a cabinet device formed by assembling a door and a cabinet of a refrigerator shown in one embodiment.

[0043] Figure 15 for Figure 13 The schematic diagram of the structure of the transmission device after being encapsulated by the carrier is shown.

[0044] Figure 16 1 is a schematic structural diagram of a refrigerator shown in an embodiment.

[0045] Figure 17 for Figure 16 The refrigerator shown is a half-section view of the CC.

[0046] Figure 18 for Figure 16 The refrigeration principle diagram of the refrigerator shown.

[0047] Reference numerals:

[0048] 1. Refrigerator; 10. Door; 20. Cabinet; 21. Storage cavity; 211. Refrigerator; 212. Freezer; 30. Transmission; 31. Carrier; 311. First end; 312. Second end; 32. Motor; 33. Telescopic assembly; 331. Rotating member; 332. Telescopic member; 34. Connecting rod mechanism; 341. First mounting member; 342. Second mounting member; 343. Connecting rod assembly; 35. Drive rod; 36. Coupling; 40. Clutch; 41. Active member; 411. Second non-cylindrical body; 42 , driven part; 421, first non-cylindrical body; 43, protective shell; 44, transmission assembly; 441, matching part; 4411, clamping block; 4412, mounting groove; 4413, connecting column; 442, clutch part; 4421, first matching hole; 4422, second matching hole; 4423, clamping slot; 4424, assembly groove; 4425, matching column; 443, electromagnetic coil; 444, reset part; 45, bearing; 50, drawer; 60, compressor; 70, condenser; 80, evaporator; 90, throttling assembly. DETAILED DESCRIPTION

[0049] Here, the technical solutions in the embodiments (or "implementations") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0050] If there are terms related to directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, height, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships, movement, etc. between the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first" and "second" in the embodiments of the present application are only used for the purpose of convenience of description and should not be understood as indicating or implying relative importance.

[0051] With socioeconomic development and rising living standards, refrigerators have become an indispensable appliance in people's daily lives. The increasing diversification of refrigerator functions has led to a wide variety of refrigerator types and brands, providing consumers with a wide range of choices. Simply improving refrigerators' cooling properties is insufficient to meet consumer expectations. Refrigerator intelligence has also become a key factor influencing refrigerator competitiveness. Among refrigerators with similar functions or performance, the more intelligent a refrigerator is, the more likely it is to attract consumers.

[0052] Automatic refrigerator opening and closing, a fundamental function of intelligent refrigerators, is becoming increasingly popular. For example, refrigerator doors that automatically open and close are gaining popularity among consumers. Another example is refrigerator drawers that automatically open and close, making it easier for users to access items and are becoming increasingly popular.

[0053] In the related art, refrigerators typically use electric drive to achieve automatic opening and closing. When using electric drive, a clutch is also required to accommodate manual opening and closing. However, the transmission method of traditional clutches is complex and the application cost is high, resulting in high production costs for this type of refrigerator. For example, traditional clutch structures are relatively bulky, the transmission method is complex, and the application cost is high. Taking a clutch that relies on a gear assembly to achieve clutch transmission as an example, the gear assembly of this clutch needs to include multiple transmission gears, and the positioning and installation accuracy of each transmission gear must be high to ensure that each transmission gear is engaged, thereby achieving power transmission or disconnection. If any of the transmission gears fails, power transmission cannot be completed, and the clutch will lose its clutch function. As a result, the internal structure of the traditional clutch is cumbersome to install, the transmission method is complex, and the production cost is high. When the traditional clutch is installed in the refrigerator, the production cost of this type of refrigerator is also high.

[0054] Thus, the present disclosure provides a clutch that enables both automated and manual opening and closing of a refrigerator. Furthermore, during manual opening and closing, the clutch reduces resistance encountered by the user, enabling effortless operation and improving the user experience. Furthermore, the clutch provided by the present disclosure simplifies its transmission structure and mode, reducing clutch production costs.

[0055] The clutch provided by the present disclosure will be described below with reference to the accompanying drawings.

[0056] See also Figures 1 to 3 , Figure 1 FIG. 4 is a schematic structural diagram of a clutch 40 according to an embodiment. Figure 2 for Figure 1 The clutch 40 is shown in cross-section along AA (the clutch 40 is in a disengaged state). Figure 3 for Figure 2The clutch 40 shown is a schematic structural diagram of the clutch 40 in a transmission state. The clutch 40 provided in the present disclosure includes an active member 41, a driven member 42 and a transmission assembly 44. The transmission assembly 44 includes a mating member 441, a clutch member 442 and an electromagnetic coil 443. The mating member 441 is in transmission connection with one of the active member 41 and the driven member 42, and the clutch member 442 is in transmission connection with the other of the active member 41 and the driven member 42. The clutch member 442 can be extended and retracted along the rotation axis direction of the active member 41, and has a transmission state in which it is in transmission connection with the mating member 441 and a separation state in which it is separated from the mating member 441. The clutch member 442 can be reset to the separation state. The electromagnetic coil 443 is sleeved on the outside of the mating member 441, and when the electromagnetic coil 443 is energized, it can generate a magnetic attraction force that drives the clutch member 442 to engage with the mating member 441 in transmission. When the clutch member 442 is in the transmission state, the active member 41 can drive the transmission assembly 44 and the driven member 42 to rotate. When the clutch member 442 is in the disengaged state, the driven member 42 can rotate relative to the transmission assembly 44 and the driving member 41 .

[0057] It should be noted that the active member 41 is used to connect to the output shaft of the motor, and the driven member 42 is used to connect to an active component that can be driven by the motor or manually by the user. For example, if a refrigerator drawer needs to be driven to open and close automatically, the active component can be the refrigerator drawer assembly. Alternatively, if a refrigerator door needs to be driven to open and close automatically, the active component can be the refrigerator door assembly. The active component can be any part that the user desires to open and close automatically or manually. The user can select the appropriate active component based on actual usage needs, and this disclosure does not limit this.

[0058] The transmission assembly 44 is intermittently connected between the active member 41 and the driven member 42. When the transmission assembly 44 securely connects the active member 41 and the driven member 42, the motor drives the active member 41 and the driven member 42 to rotate synchronously, thereby driving the movable assembly to automatically open and close. When the transmission assembly 44 separates the active member 41 and the driven member 42, the driven member 42 is no longer controlled by the motor, allowing the user to manually open and close the movable assembly.

[0059] Among them, taking the example of the matching piece 441 being installed on the active piece 41 and the clutch piece 442 being installed on the driven piece 42, the active piece 41 can be set as an active shaft extending along the X direction, and the driven piece 42 can be set as a driven shaft coaxially arranged with the active piece 41 along the X direction. The two ends of the active shaft spaced apart along the X direction can be used to connect the output shaft of the motor and the matching piece 441, respectively. When the motor drives the active piece 41 to rotate, the active piece 41 can drive the matching piece 441 to rotate along with the active piece 41, so that the power of the motor can be transmitted to the clutch piece 442 when the matching piece 441 is connected to the clutch piece 442, and then the clutch piece 442 drives the driven piece 42 to rotate, thereby realizing the linkage between the active piece 41 and the driven piece 42. The active piece 41 and the output shaft of the motor can be connected by a coupling, which is not limited by the present disclosure.

[0060] See also Figures 2 to 3 , Figure 2 for Figure 1 The clutch 40 is shown in cross-section along AA (the clutch 40 is in a disengaged state). Figure 3 for Figure 2 The clutch 40 is shown in a schematic diagram of its structure in a transmission state. To achieve the connection between the mating member 441 and the clutch member 442, the mating member 441 can be provided with an electromagnetic coil 443. The electromagnetic coil 443 generates a magnetic field when energized, thereby using magnetic attraction to move the clutch member 442, thereby connecting it to the mating member 441.

[0061] Among them, Figure 2 In this embodiment, because the clutch member 442 is in the disengaged state, the counterclockwise or clockwise movement of the driven member 42 does not interfere with the movement of the driving member 41, and the driven member 42 is not controlled by the motor's rotation. In other words, the driven member 42 can rotate relative to the transmission assembly 44 and the driving member 41, facilitating manual operation by the user.

[0062] When the active member 41 is driven to rotate by the motor, the electromagnetic coil 443 is energized to generate a magnetic field, so that the clutch member 442 is attracted by the magnetic force and moves in the opposite direction of X, and is fixedly connected with the matching member 441 to form a Figure 3 In this way, through the connection between the clutch member 442 and the matching member 441, the active member 41 and the driven member 42 are linked, that is, the motor can drive the active member 41 and the driven member 42 to rotate synchronously.

[0063] exist Figure 3 When the motor no longer outputs torque, the active member 41 stops rotating, the electromagnetic coil 443 loses power and no longer generates a magnetic field, causing the magnetic attraction between the clutch member 442 and the mating member 441 to disappear, and the clutch member 442 can move in the X direction to separate from the mating member 441, thereby resetting to Figure 2The clutch 40 of the present disclosure can realize the linkage or separation of the driving member 41 and the driven member 42.

[0064] Thus, during use of the clutch 40 provided by the present disclosure, when the active member 41 is driven to rotate by the motor, the electromagnetic coil 443 is energized to generate a magnetic field, causing the clutch member 442 to be moved toward the mating member 441 by the magnetic attraction force and connected to the mating member 441, thereby realizing the linkage between the active member 41 and the driven member 42. When the motor no longer outputs torque, the active member 41 stops rotating, the electromagnetic coil 443 loses power and no longer generates a magnetic field, causing the magnetic attraction between the clutch member 442 and the mating member 441 to disappear, and the clutch member 442 can be reset to a separated state from the mating member 441, thereby realizing the disconnection of the transmission between the active member 41 and the driven member 42, and the driven member 42 can be freely rotated relative to the active member 41 by an external force without dragging the active member 41 to rotate synchronously.

[0065] When the clutch 40 of the present disclosure is applied to the transmission device between the door and the body of a refrigerator, the driven member 42 can be used to connect the door assembly. When the driving member 41 and the driven member 42 rotate synchronously, the refrigerator door can be automatically opened and closed by electric drive. When the driving member 41 and the driven member 42 are disconnected from the transmission, the user can manually open and close the door, and the two opening and closing methods of the refrigerator do not interfere with each other. At the same time, when the user manually opens and closes the door, the user does not need to drag the motor end to rotate synchronously, which can reduce the resistance encountered by the user when manually opening and closing the door. This can reduce the load on the user when manually opening and closing the door, allowing the user to open and close the door with less effort, thereby improving the user experience.

[0066] The clutch 40 disclosed herein can also be used to automatically open and close a refrigerator drawer and refrigerator body. The driven member 42 connects the drawer assembly, enabling the refrigerator to automatically open and close the drawer electrically when the driving member 41 and the driven member 42 rotate synchronously. When the driving member 41 and the driven member 42 are disconnected, the drawer can be opened and closed manually by the user, a process not described in detail in this disclosure.

[0067] Therefore, the clutch 40 provided in the present disclosure can drive the clutch member 442 to move through the magnetic attraction force generated by energizing the electromagnetic coil 443, without the need to drive the clutch member 442 to move through the transmission of the gear assembly, thereby simplifying the transmission structure and transmission method of the clutch 40 and reducing the production cost of the clutch 40.

[0068] In addition, it can be understood that the clutch 40 provided in the present disclosure drives the clutch member 442 to move by the magnetic attraction force generated by energizing the electromagnetic coil 443. While being able to simplify the transmission structure of the clutch 40, it can also reduce the structural size of the clutch 40, so that after the clutch 40 is installed in the refrigerator, the installation space occupied by the refrigerator is reduced.

[0069] In one embodiment, in order to facilitate the connection between the mating part 441 and the clutch part 442, the material of the clutch part 442 can be set to be a soft magnet, and the electromagnetic coil 443 is spirally wound on the outside of the mating part 441. After the electromagnetic coil 443 is energized, the mating part 441 and the clutch part 442 are magnetically attracted to each other.

[0070] It should be noted that soft magnets are easy to be magnetized and also easy to demagnetize. When the electromagnetic coil 443 is energized to generate a magnetic field, the clutch 442 can be magnetized to connect with the mating part 441 through magnetic attraction. When the electromagnetic coil 443 is de-energized and no longer generates a magnetic field, the clutch 442 can be demagnetized to separate from the mating part 441. Among them, the clutch 442 can be a variety of soft magnets such as iron, low-carbon steel, iron-silicon alloy, iron-aluminum alloy, iron-silicon-aluminum alloy, nickel-iron alloy, iron-cobalt alloy or soft magnetic ferrite, and the present disclosure does not limit it.

[0071] See also Figure 4 , Figure 4 Figure 4 is a schematic diagram of the structure of a clutch member 442 according to one embodiment. In one embodiment, to facilitate the installation of the clutch member 442 and the follower 42, the follower 42 is provided with a first non-cylindrical body 421. The clutch member 442 is provided with a first mating hole 4421. The first non-cylindrical body 421 engages with the first mating hole 4421 in a driving manner, allowing the clutch member 442 to drive the follower 42 to rotate. The first non-cylindrical body 421 slidably engages with the first mating hole 4421 along the rotational direction of the follower 42.

[0072] It should be noted that when the clutch 442 is arranged on the follower 42, after the electromagnetic coil 443 is energized, the clutch 442 can be slid along the follower 42 by the magnetic attraction force and connected to the mating member 441 to form a transmission state. Among them, the clutch 442 and the follower 42 can be installed by plug-in matching to simplify the installation steps. At the same time, the plug-in connection between the clutch 442 and the follower 42 can allow the clutch 442 to slide relative to the follower 42 under the magnetic attraction force, so as to connect with the mating member 441 to form a transmission state. As an example, the first non-cylindrical body 421 can be set to a clearance fit with the first mating hole 4421 to facilitate the sliding of the clutch 442 relative to the follower 42.

[0073] At the same time, by providing the first non-cylindrical body 421 and the first mating hole 4421, relative rotation between the clutch member 442 and the driven member 42 can be prevented during rotation, thereby enabling the clutch member 442 to transmit power from the active member 41 to the driven member 42, thereby achieving synchronous rotation of the active member 41 and the driven member 42. As an example, the first non-cylindrical body 421 can be an elliptical cylinder, and the first mating hole 4421 can be an elliptical hole. Alternatively, the first non-cylindrical body 421 can be a prism, and the first mating hole 4421 can be a polygonal hole that mates with the prism, although this disclosure is not limited thereto.

[0074] Of course, in other embodiments, the engaging member 441 may also be provided on the driven member 42, and the clutch member 442 may be provided on the driving member 41. The driving member 41 is provided with a second non-cylindrical body 411, and the clutch member 442 is provided with a second engaging hole 4422. The second non-cylindrical body 411 is engaged with the second engaging hole 4422 in a transmission manner, so that the driving member 41 drives the clutch member 442 to rotate. The second non-cylindrical body 411 is engaged with the second engaging hole 4422 in a sliding manner along the rotational direction of the driving member 41.

[0075] It should be noted that when the mating member 441 is disposed on the driven member 42, after the electromagnetic coil 443 is energized, the clutch member 442 can be subjected to the magnetic attraction force to slide along the active member 41 and connect with the mating member 441, thereby forming a transmission state. Accordingly, the second non-cylindrical body 411 can be provided with a clearance fit with the second mating hole 4422 to facilitate the sliding of the clutch member 442 relative to the active member 41. The second non-cylindrical body 411 can be an elliptical cylinder, and the second mating hole 4422 can be an elliptical hole, or the second non-cylindrical body 411 can be a prism, and the second mating hole 4422 can be a polygonal hole that mates with the prism, and the present disclosure does not impose any restrictions thereto.

[0076] See also Figure 4 and Figure 5 , Figure 4 FIG. 4 is a structural diagram of a matching component 441 shown in an embodiment. Figure 5 Figure 4 is a schematic diagram of the structure of a clutch member 442 according to one embodiment. In one embodiment, to ensure a stable connection between the mating member 441 and the clutch member 442, one of the mating member 441 and the clutch member 442 is provided with a slot 4423, and the other of the mating member 441 and the clutch member 442 is provided with a latching block 4411. When the clutch member 442 is in the transmission state, the latching block 4411 engages with the slot 4423. When the clutch member 442 is in the disengaged state, the latching block 4411 separates from the slot 4423.

[0077] With this arrangement, when clutch member 442 is in the transmission state, clutch member 442 and mating member 441 not only engage magnetically but also form a plug-in fit with latch block 4411 via latch slot 4423, increasing the connection area and thus improving transmission reliability. Furthermore, when clutch member 442 is in the disengagement state, latch block 4411 easily disengages from latch slot 4423, achieving separation of mating member 441 from clutch member 442.

[0078] See also Figure 6 and Figure 7 , Figure 6 for Figure 1 The clutch 40 is shown in an exploded view from one perspective. Figure 7 for Figure 1 The clutch 40 is shown in an exploded view from another perspective. In some embodiments, to facilitate the clutch member 442 to return to the disengaged state, the transmission assembly 44 further includes a reset member 444, which is disposed on at least one of the clutch member 442 and the mating member 441, so that the clutch member 442 can be reset to the disengaged state.

[0079] In some embodiments, the reset member 444 comprises an elastic member, and the clutch member 442 can be elastically reset to the disengaged state by the elastic member. As an example, the elastic member comprises a spring, the mating member 441 comprises a mounting groove 4412 and a connecting post 4413 disposed within the mounting groove 4412, the clutch member 442 comprises an assembly groove 4424 corresponding to the mounting groove 4412 and a mating post 4425 disposed within the assembly groove 4424, and the spring is disposed between the connecting post 4413 and the mating post 4425.

[0080] Thus, when clutch member 442 and mating member 441 are connected by magnetic attraction to form a transmission state, connecting post 4413 and mating post 4425 can also move closer to each other, causing the spring to be squeezed and deformed. When the magnetic attraction between clutch member 442 and mating member 441 disappears, the spring can recover its deformation and push clutch member 442 away from mating member 441, separating clutch member 442 from mating member 441 and returning clutch member 442 to the disengaged state.

[0081] The spring can be configured as a conical spring. Due to its tapered shape, the spring coils at each end of the conical spring have different radial dimensions. Thus, the smaller diameter end of the conical spring can be used to slot into the connecting post 4413, while the larger diameter end can be used to slot into the mating post 4425. By configuring the elastic member as a conical spring, the conical spring can utilize its elastic reset force to pull the clutch member 442 away from the mating member 441, returning it to a disengaged state. Furthermore, the spring's stiffness can be adjusted by adjusting its taper, ensuring effective connection between the conical spring and the clutch member 442 and mating member 441. As can be appreciated, due to the conical spring's unique shape, it can also provide greater compression than a conventional cylindrical spring at the same compression height, thereby saving internal installation space within the clutch 40 and improving the clutch 40's compactness.

[0082] See also Figure 8 and Figure 9 , Figure 8 FIG. 4 is a schematic structural diagram of a clutch 40 installed with a protective housing 43 according to an embodiment. Figure 9 for Figure 8 The diagram shows the structure of clutch 40 without protective housing 43. In some embodiments, clutch 40 further includes protective housing 43, which defines a protective cavity within which driving member 41, driven member 42, and transmission assembly 44 are rotatably enclosed. At least a portion of driving member 41 is exposed outside protective housing 43, and at least a portion of driven member 42 is exposed outside protective housing 43.

[0083] For example, the active member 41 and the driven member 42 are respectively connected to the protective shell 43 through bearings 45. In addition, at least a portion of the active member 41 is exposed outside the protective shell 43 to facilitate connection to the output shaft of the motor. At least a portion of the driven member 42 is exposed outside the protective shell 43 to facilitate connection to movable components such as a door assembly or a drawer assembly. In this way, the clutch 40 can use the protective shell 43 to protect the active member 41, the driven member 42 and the transmission assembly 44 to prevent external particles and other debris from entering between the transmission structures, causing the clutch 40 to get stuck. At the same time, lubricating grease can also be provided in the protective cavity to lubricate the transmission structure of the clutch 40, reduce wear between the transmission structures, and improve the durability of the clutch 40.

[0084] See also Figure 10 , Figure 10 FIG. 1 is a schematic structural diagram of a transmission device shown in an embodiment. Figure 10The X direction may be the axial direction of the active member 41, and the Y direction may be the radial direction of the active member 41. In some embodiments, the present disclosure further provides a transmission device 30, comprising a carrier 31, a motor 32, a telescopic assembly 33 and a clutch 40 in any of the above embodiments. The carrier 31 includes a first end 311 and a second end 312 arranged opposite to the first end 311. The motor 32 is arranged at the first end 311, and the motor 32 includes an output end transmission-connected to the active member 41. The telescopic assembly 33 includes a rotating member 331 rotatably arranged on the carrier 31 and a telescopic member 332 cooperating with the rotating member 331, and the rotating member 331 is transmission-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 separation state, the motor 32 and the telescopic assembly 33 are disconnected from the transmission.

[0085] See also Figure 11 and Figure 12 , Figure 11 This is a partial structural diagram of a cabinet device formed by assembling a drawer and a cabinet of a refrigerator shown in one embodiment. Figure 12 for Figure 11 The structure diagram of the drawer is shown in FIG. 1 . In order to better understand the assembly relationship between the box 20 and the drawer 50, the present disclosure Figure 11 Partially illustrating the housing 20, the structure is omitted. In this embodiment, the housing device comprises the housing 20, a drawer 50, and the transmission device 30 described in the above embodiment. The housing 20 defines a storage cavity 21, within which the drawer 50 is retractably positioned. A support member 31 is secured to the housing 20, and a retractable member 332 is connected to the drawer 50 to drive its movement relative to the housing 20.

[0086] It should be noted that the transmission device 30 provided herein can be installed between the drawer 50 and the housing 20 of the refrigerator 1 during use, enabling both automatic and manual opening and closing of the drawer 50. The carrier 31 is fixed to the housing 20, and the telescopic member 332 is connected to the drawer 50 to drive the drawer 50 relative to the housing 20. The first end 311 and the second end 312 of the carrier 31 can be spaced apart along the direction indicated by X in the figure. When the clutch 40 is in a transmission state, the motor 32 is transmission-connected to the telescopic assembly 33 via the clutch 40, and the motor 32 can drive the telescopic member 332 toward or away from the second end 312, thereby achieving electrically driven automatic opening and closing of the drawer 50. When the clutch 40 is in a disengaged state, the motor 32 is disconnected from the telescopic assembly 33 via the clutch 40, allowing the user to manually open and close the drawer 50 without dragging the motor 32 end to rotate. This allows the manual and electrically operated drawer 50 to interact without interfering with each other. This reduces manual load, allowing the user to open and close the drawer 50 with less effort, improving the user experience.

[0087] like Figure 10 As shown, in some embodiments, to facilitate converting the rotation of the motor 32 into a driving force for the expansion and contraction of the drawer 50, the telescopic assembly 33 may include a rotating member 331 rotatably disposed on the carrier 31 and a telescopic member 332 cooperating with the rotating member 331, wherein the rotating member 331 is connected to the output shaft of the clutch 40, and the telescopic member 332 is connected to the drawer 50. When the clutch 40 is in a transmission state, the motor 32 is in transmission connection with the telescopic assembly 33 to drive the telescopic 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 electrically. When the clutch 40 is in a disengaged state, the motor 32 and the telescopic assembly 33 are disconnected from each other, and the user can manually open and close the drawer 50. The drawer 50 can drive the telescopic member 332 to reciprocate along the rotating member 331. However, since the telescopic assembly 33 and the motor 32 are disconnected due to the clutch 40, the telescopic assembly 33 does not transmit the motion to the motor 32 end. As a result, when the user manually opens and closes the drawer 50, it is not necessary to drive the motor 32 end to rotate, thereby reducing the opening and closing resistance.

[0088] As an example, the telescopic assembly 33 can be configured as a screw-nut kinematic pair, wherein the rotating member 331 can be configured as a screw, and the telescopic member 332 can be configured as a nut threadedly connected to the screw. Through the threaded transmission between the screw and the nut, the rotation is converted into linear motion, and the rotation of the motor 32 is then converted into the driving force for opening and closing the drawer 50.

[0089] See also Figure 13 , Figure 13 FIG. 1 is a schematic structural diagram of a transmission device shown in another embodiment. Figure 13 The X direction may be the axial direction of the active member 41, and the Y direction may be the radial direction of the active member 41. In other embodiments, the transmission device 30 further includes a linkage mechanism 34 and a drive rod 35. The linkage mechanism 34 includes a first mounting member 341, a second mounting member 342, and a linkage assembly 343 disposed between the first mounting member 341 and the second mounting member 342. The second mounting member 342 swings relative to the first mounting member 341 via the linkage assembly 343. The drive rod 35 is connected to the telescopic member 332. A connecting notch is defined at the second end 312. The drive rod 35 passes through the connecting notch and is movably connected to the linkage mechanism 34 to drive the second mounting member 342 to swing relative to the first mounting member 341.

[0090] See also Figure 14 , Figure 14 This is a schematic diagram of the structure of a refrigerator cabinet assembly formed by assembling the door and cabinet of a refrigerator according to one embodiment. In this embodiment, the cabinet assembly includes a cabinet 20, a door 10 rotatably connected to the cabinet, and the transmission device 30 described in the above embodiment. The cabinet 20 is connected to a first mounting member 341, and the door 10 is connected to a second mounting member 342.

[0091] It should be noted that when the transmission device 30 further includes a connecting rod mechanism 34 and a drive rod 35, the connecting rod mechanism 34 can be installed between the door 10 and the housing 20, and the telescopic assembly 33 drives the drive rod 35 to drive the connecting rod mechanism 34 to move, thereby achieving automatic opening and closing of the door 10 of the refrigerator 1. Specifically, the housing 20 can be connected to the first mounting member 341, and the door 10 can be connected to the second mounting member 342. The connecting rod assembly 343 is connected between the first mounting member 341 and the second mounting member 342 and is driven by the telescopic assembly 33. The connecting notch of the carrier 31 allows the drive rod 35 to connect to the telescopic member 332. When the clutch 40 is in the transmission state, the motor 32 is in transmission connection with the telescopic assembly 33. The motor 32 can drive the rotating member 331 to move the telescopic member 332. The telescopic member 332 drives the driving rod 35 to move the connecting rod assembly 343, causing the second mounting member 342 to swing relative to the first mounting member 341. This allows the door 10 to be driven by the motor 32 to open or close relative to the cabinet 20, thereby realizing automatic opening and closing of the refrigerator 1. When the clutch 40 is in the disengaged state, the motor 32 is disconnected from the telescopic assembly 33, and the user can manually open or close the door 10 without dragging the motor 32 end to rotate, thereby reducing the manual load, allowing the user to open or close the door 10 with less effort, and preventing the rotation of the motor 32 from interfering with the user's manual opening and closing of the door.

[0092] Furthermore, to accommodate the rotational connection between the door 10 and the housing 20, the connecting rod assembly 343 may be integrated with the hinge assembly between the door 10 and the housing 20, but this disclosure does not limit this. Furthermore, a coupling 36 or a gear reduction box may be provided between the clutch 40 and the output shaft of the motor 32, but this disclosure does not elaborate on this.

[0093] See also Figure 15 , Figure 15 for Figure 13 Figure 3 shows the structure of the transmission device encapsulated by a carrier. In some embodiments, to enhance the aesthetics of the transmission device 30 when installed in a box, the carrier 31 can be configured as a shell. The carrier 31 can encapsulate the transmission device 30. This shields various components of the transmission device 30, creating a neat appearance. Furthermore, the carrier 31 can be used to protect or lubricate the internal structure of the transmission device 30.

[0094] In some embodiments, the present disclosure further provides a refrigerator 1, comprising a control device and the above-mentioned cabinet device. The cabinet device may include a cabinet 20, a drawer 50, and a transmission device 30. Alternatively, the cabinet device may include a cabinet 20, a cabinet door 10, and a transmission device 30 with a connecting rod mechanism 34. Alternatively, the cabinet device may include a cabinet 20, a cabinet door 10, a drawer 50, a transmission device 30 connected between the cabinet 20 and the drawer 50, and a transmission device 30 connected between the cabinet 20 and the cabinet door 10, and the present disclosure does not limit this.

[0095] The control device is in communication with the motor 32. Thus, the refrigerator 1 provided by the present disclosure can realize intelligent automatic opening and closing between the door 10 and the housing 20, or between the housing 20 and the drawer 50, through the clutch 40, while not interfering with the user's manual opening and closing of the door 10, reducing the resistance of the user to manual opening and closing of the door 10, and improving the user experience.

[0096] It should be noted that the control device includes a controller built into the refrigerator 1, such as an MCU (microcontroller unit), a PLC (programmable logic controller), a CPU (central processing unit), or a single-chip microcomputer. In this way, the controller built into the refrigerator 1 can be linked to the start and stop of the motor 32, and this disclosure does not limit this.

[0097] In some embodiments, the refrigerator 1 may further include other movable parts such as the door 10 and the drawer 50 that move relative to the housing 20. Thus, by installing the transmission device 30 between the housing 20 and the movable parts, the movable parts can be automatically opened and manually opened relative to the housing 20, which is not limited in the present disclosure.

[0098] See also Figures 16 to 18 , Figure 16 1 is a schematic structural diagram of a refrigerator shown in an embodiment. Figure 17 for Figure 16 The refrigerator shown is a half-section view of the CC. Figure 18 for Figure 16 Refrigerator Refrigeration Principle Diagram shown. In some embodiments, refrigerator 1 further includes a compressor 60, a condenser 70, an evaporator 80, and a throttle assembly 90. The housing 20 also includes a storage cavity 21, which includes a refrigerated compartment 211 and a frozen compartment 212. The compressor 60, condenser 70, evaporator 80, and throttle assembly 90 are respectively disposed in the housing 20, with at least a portion of the evaporator 80 disposed within the frozen compartment 212.

[0099] Combine Figure 18As shown, when refrigerator 1 is in operation, compressor 60 outputs high-temperature, high-pressure gaseous refrigerant to condenser 70, where it is condensed into medium-temperature, high-pressure refrigerant. The medium-temperature, high-pressure refrigerant undergoes expansion and throttling by throttling assembly 90, further reducing its pressure and temperature. It then flows out of throttling assembly 90 as low-temperature, low-pressure liquid refrigerant to evaporator 80. The low-temperature, low-pressure liquid refrigerant evaporates into gaseous refrigerant within evaporator 80. At least a portion of evaporator 80 is located within freezer compartment 212, allowing the refrigerant to absorb a significant amount of heat from freezer compartment 212 during evaporation, thereby lowering the temperature within freezer compartment 212 and facilitating the use of freezer compartment 212 to freeze items, achieving refrigeration in refrigerator 1. The refrigerant exiting evaporator 80 is then replenished back into compressor 60, forming a refrigerant circuit. In this manner, the refrigerant continuously circulates within the refrigerant circuit to maintain a refrigerated environment (e.g., below -1°C) within freezer compartment 212.

[0100] In some embodiments, an air duct is provided between the refrigerating chamber 211 and the freezing chamber 212 to facilitate the transfer of part of the cold air from the freezing chamber 212 to the refrigerating chamber 211 through the air duct to reduce or maintain the low temperature environment of the refrigerating chamber 211 (e.g., 2°C to 8°C).

[0101] In some embodiments, the freezer compartment 212 is positioned below the refrigerator compartment 211 along the height of the refrigerator 1. The refrigerator 1 further includes a first fan (not labeled) disposed within the housing 20 assembly. The first fan's air inlet or outlet is connected to an air duct for transferring some of the cold air from the freezer compartment 212 to the refrigerator compartment 211. The drawer 50 may be disposed within the refrigerator compartment 211 and / or the freezer compartment 212, but this disclosure does not limit this.

[0102] like Figure 17 As shown, the height direction of the refrigerator 1 is the Z-axis direction. Regarding other structures of the refrigerator 1, this disclosure does not elaborate on them.

[0103] It should be noted that when one element is considered to be "transmission-connected" to another element, the two elements can be fixed in a detachable or non-detachable manner, as long as they can achieve force transmission. For example, shaft connection, sleeve connection, snap connection, integral molding fixation, welding, etc. can be achieved in traditional technologies and can be flexibly selected according to actual application needs. For example, one element is provided with a non-cylindrical body, and the other element is provided with a mating hole for transmission cooperation with the non-cylindrical body. Non-cylindrical bodies include polygonal cylinders, elliptical cylinders, semi-cylinders, etc., which will not be described in detail in this disclosure.

[0104] The technical solutions or technical features described in the above embodiments may be combined or supplemented with each other without conflict. The scope of protection of this disclosure is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this disclosure shall be included in the scope of protection of this disclosure.

Claims

1. A clutch, characterized in that: include: Active parts; follower; as well as A transmission assembly comprising a mating member, a clutch member, and an electromagnetic coil; the mating member is in transmission connection with one of the active member and the driven member; the clutch member is in transmission connection with the other of the active member and the driven member; the clutch member is capable of extending and contracting along the rotation axis of the active member and having a transmission state in which it is in transmission connection with the mating member and a separation state in which it is separated from the mating member; the clutch member is capable of resetting to the separation state; the electromagnetic coil is sleeved on the outside of the mating member, and when energized, the electromagnetic coil is capable of generating a magnetic attraction force that drives the clutch member to engage with the mating member; When the clutch member is in the transmission state, the active member can drive the transmission assembly and the driven member to rotate; When the clutch member is in the disengaged state, the driven member can rotate relative to the transmission assembly and the driving member.

2. The clutch according to claim 1, characterized in that: The clutch member is made of a soft magnetic material, and the electromagnetic coil is spirally wound around the outer side of the matching member. When the electromagnetic coil is energized, the matching member and the clutch member are magnetically attracted to each other.

3. The clutch according to claim 1, characterized in that: The mating part is arranged on the active part, and the clutch part is arranged on the driven part; the driven part is provided with a first non-cylindrical body, and the clutch part is provided with a first mating hole. The first non-cylindrical body is in transmission cooperation with the first mating hole so that the clutch part drives the driven part to rotate, and the first non-cylindrical body is in sliding cooperation with the first mating hole along the rotation direction of the driven part.

4. The clutch according to claim 1, characterized in that: The mating part is arranged on the driven part, and the clutch part is arranged on the active part; the active part is provided with a second non-cylindrical body, and the clutch part is provided with a second mating hole. The second non-cylindrical body is in transmission cooperation with the second mating hole so that the active part drives the clutch part to rotate, and the second non-cylindrical body is in sliding cooperation with the second mating hole along the rotation direction of the active part.

5. The clutch according to claim 1, characterized in that: One of the matching piece and the clutch piece is provided with a slot, and the other of the matching piece and the clutch piece is provided with a block; When the clutch is in a transmission state, the clamping block is plugged into and engaged with the clamping slot; When the clutch member is in a disengaged state, the clamping block is separated from the clamping slot.

6. The clutch according to claim 1, characterized in that: The transmission assembly further includes a reset member, which is disposed on at least one of the mating member and the clutch member, so that the clutch member can be reset to the disengaged state.

7. The clutch according to claim 6, characterized in that: The reset member includes an elastic member, and the clutch member can be elastically reset to the separation state through the elastic member.

8. The clutch according to claim 7, characterized in that: The elastic part includes a conical spring, the matching part is provided with a mounting groove and a connecting column arranged in the mounting groove, the clutch part is provided with an assembly groove corresponding to the mounting groove and a matching column arranged in the assembly groove, and the conical spring is sleeved between the connecting column and the matching column.

9. The clutch according to any one of claims 1 to 8, characterized in that: The clutch also includes a protective shell, which is provided with a protective cavity, and the active member, the driven member and the transmission assembly are rotatably encapsulated in the protective cavity; at least part of the active member is exposed outside the protective shell, and at least part of the driven member is exposed outside the protective shell.

10. A transmission device, characterized in that: comprising a bearing, a motor, a telescopic assembly and the clutch according to any one of claims 1 to 9; The bearing member includes a first end and a second end disposed opposite to the first end; The motor is arranged at the first end, and the motor includes an output end which is transmission-connected to the active member; The telescopic assembly includes a rotating member rotatably arranged on the bearing member and a telescopic member cooperating with the rotating member, and the rotating member is transmission-connected to the driven member; In the transmission state, the motor can drive the telescopic member to move toward or away from the second end through the clutch; In the separated state, the motor and the telescopic assembly are disconnected from each other.

11. The transmission device according to claim 10, characterized in that: The transmission device further includes a connecting rod mechanism and a driving rod; the connecting rod mechanism includes a first mounting member, a second mounting member, and a connecting rod assembly disposed between the first mounting member and the second mounting member, and the second mounting member swings relative to the first mounting member via the connecting rod assembly; The driving rod is connected to the telescopic member, and a connecting notch is provided at the second end. The driving rod passes through the connecting notch and is movably connected to the connecting rod mechanism to drive the second mounting member to swing relative to the first mounting member.

12. A box device, characterized in that: It comprises a box body, a box door rotatably connected to the box body, and the transmission device according to claim 11; the box body is connected to the first mounting member, and the box door is connected to the second mounting member.

13. A box device, characterized in that: It comprises a box body, a drawer and the transmission device according to claim 10, wherein the box body is provided with a storage cavity, the drawer is telescopically arranged in the storage cavity, the supporting member is fixed to the box body, and the telescopic member is connected to the drawer to drive the drawer to move relative to the box body.

14. A refrigerator, characterized in that: It comprises a control device and the box equipment according to claim 12 or 13; the control device is communicatively connected with the motor.

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