Clutch device, door opening and closing mechanism and box assembly

Abstract

The invention discloses a clutch device, a door opening and closing mechanism and a box assembly. The clutch device is used for being arranged between a driving assembly and a rotating door device so as to achieve connection and separation of the driving assembly and the rotating door device, the clutch device comprises a connection component and a clutch, the connection component comprises a protection ring, at least one transmission pin shaft and a pressing piece, the transmission pin shaft is movably arranged on the protection ring, and the pressing piece abuts against the protection ring; the combination sleeve is used for being in butt joint with the revolving door device, the protection ring is sleeved with the combination sleeve, and meshing grooves in one-to-one correspondence with the transmission pin shafts are formed in the inner side of the combination sleeve; and the driving gear is located in the protection ring and used for being in butt joint with the driving assembly, the driving assembly drives the driving gear to rotate and can drive and push the transmission pin shaft to stretch out and be clamped into the meshing groove, the driving assembly stops driving, and the transmission pin shaft can return into the protection ring. The clutch device is of a pure mechanical structure, the structure is simple and compact, the number of related parts is small, the overall size is small, and the installation adaptability is high.

Description

Technical Field

[0001] The present application belongs to the technical field of smart home appliances, and specifically relates to a clutch device, a door opening and closing mechanism, and a box assembly. Background Art

[0002] With the development of automation and intelligence of household appliances, some household appliances use automatic door opening and closing devices between the cabinet and the door to realize automatic opening and closing of the door on the cabinet. In order to facilitate users to freely choose to open and close the door manually or use the automatic door opening and closing function, the existing automatic door opening and closing mechanism can also be provided with a clutch device for separating or engaging the transmission system.

[0003] However, the current clutch device has the problems of complex structure and large size. Summary of the invention

[0004] The present application provides a clutch device, a door opening and closing mechanism and a box assembly to solve the technical problems of the clutch device having a complex structure and a large volume.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: a clutch device, which is used to be arranged between a driving assembly and a revolving door device to realize the engagement and separation of the driving assembly and the revolving door device, and the clutch device includes: an engagement member, including a protective ring, at least one transmission pin and a clamping piece, the transmission pin is movably arranged on the protective ring, the protective ring can rotate relative to the clamping piece, and the clamping piece is abutted against the protective ring; a coupling sleeve, which is used to dock with the revolving door device, the coupling sleeve is arranged outside the protective ring, and an engaging groove corresponding to the transmission pin is formed on the inner side of the coupling sleeve; a driving spindle, which is located in the protective ring, and the driving spindle is used to dock with the driving assembly. The driving assembly drives the driving spindle to rotate, which can drive and push the transmission pin to extend out and be clamped in the engaging groove. When the driving assembly stops driving, the transmission pin can be retracted into the protective ring.

[0006] According to one embodiment of the present application, the clamping member includes: a limit seat, which is sleeved outside the protective ring, and the protective ring is rotatably set on the limit seat; a pressure block, which is set on the limit seat and abuts against the protective ring to apply a predetermined pressure to the protective ring.

[0007] According to one embodiment of the present application, a first limiting portion is provided in the limiting seat, and the pressure block has a second limiting portion on the side facing the limiting seat. In the rotation direction of the protective ring, the first limiting portion and the second limiting portion abut against each other to limit the rotation of the pressure block.

[0008] According to one embodiment of the present application, the clamping member further includes a spring pin, one end of which is disposed on the limiting seat and the other end of which is inserted into the pressing block to push the pressing block against the protective ring.

[0009] According to an embodiment of the present application, the clamping member further includes an adjusting bolt, one end of which is disposed on the limiting seat and the other end is threadedly connected to the pressing block to adjust the predetermined pressure applied by the pressing block to the protective ring.

[0010] According to an embodiment of the present application, an annular groove is formed outside the protective ring, the pressing block is embedded in the annular groove, and the pressing block has an arc surface matching the annular groove.

[0011] According to one embodiment of the present application, the protective ring is provided with a receiving groove which is arranged one-to-one with the transmission pin shaft, the receiving groove extends radially along the protective ring, and the transmission pin shaft is movably arranged in the receiving groove along the radial direction of the protective ring.

[0012] According to one embodiment of the present application, the coupling member further includes at least one elastic member, the elastic member is disposed in a one-to-one correspondence with the transmission pin shaft, and the elastic member is used to drive the transmission pin shaft to be retracted into the protective ring.

[0013] According to one embodiment of the present application, the driving main shaft has at least one gear tooth, and the gear tooth is arranged in a one-to-one correspondence with the transmission pin shaft; the transmission pin shaft forms an arc concave surface at one end facing the driving main shaft, and when the driving main shaft rotates, the gear tooth pushes the transmission pin shaft to extend outward along the arc concave surface, and when the gear tooth is facing the middle of the arc concave surface, the transmission pin shaft can be retracted into the coupling sleeve.

[0014] To solve the above technical problems, another technical solution adopted in the present application is: a door opening and closing mechanism, used to be arranged in a box assembly, the box assembly includes a box and a door body rotatably arranged in the box, the door opening and closing mechanism is arranged in one of the box and the door body, the door opening and closing mechanism includes: a revolving door device, arranged between the box and the door body, used to drive the door body to rotate; a driving assembly, used to provide power for the revolving door device; a clutch device, arranged between the revolving door device and the driving assembly, and the clutch device adopts the above-mentioned clutch device.

[0015] According to one embodiment of the present application, the revolving door device includes: a translation assembly, including a rack slidably set on one of the box body and the door body, and a transmission gear meshing with the rack; a connecting rod, a first end of the connecting rod is rotatably set on the rack, and a second end of the connecting rod is rotatably set on the other of the box body and the door body or a hinge mechanism of the box body assembly.

[0016] To solve the above technical problems, another technical solution adopted in the present application is: a box assembly, comprising: a box; a door body, used to open or close the box; a hinge mechanism, pivotally connecting the box and the door body; and a door opening and closing mechanism such as the above-mentioned, used to drive the door body to rotate relative to the box.

[0017] The beneficial effects of the present application are as follows: the clutch device of the present application adopts a purely mechanical structure, the drive assembly outputs rotation to achieve engagement of the drive assembly and the revolving door device, and the drive assembly stops outputting rotation to achieve separation of the drive assembly and the revolving door device, without the need for coordination of an additional electric control system and a drive device, the structure is simple and compact, the number of related parts is small, the overall volume is small, and the installation adaptability is strong. In addition, the clutch device in the door opening and closing mechanism of the present application achieves driving through meshing, and the engagement of the drive assembly and the revolving door device is more stable.

[0018] In addition, since the pressing member is pressed against the protective ring, the pressing member can apply a predetermined pressure to the protective ring. When the driving spindle starts to drive the protective ring to rotate, there is friction between the contact surface of the pressing member and the protective ring, and the friction can hinder the rotation of the protective ring. Therefore, the starting speed of the protective ring increases slowly, and the transmission pin shaft has sufficient time to extend out of the protective ring and engage in the meshing groove when it is aligned with the meshing groove. The engaging member and the coupling sleeve can be efficiently and accurately engaged, thereby improving the engagement efficiency of the engaging member and the coupling sleeve of the clutch device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0020] Figure 1 It is a three-dimensional structural schematic diagram of a box assembly according to an embodiment of the present application, wherein the box assembly is in a closed state, and a door opening and closing mechanism is arranged on the door body;

[0021] Figure 2 is a top view schematic diagram of a box assembly of an embodiment of the present application, wherein the box assembly is in a closed state, and a door opening and closing mechanism is disposed on the box;

[0022] Figure 3 is a schematic top view of a box assembly according to an embodiment of the present application, wherein the box assembly is in an open state, and a door opening and closing mechanism is disposed on the box;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of a door opening and closing mechanism according to an embodiment of the present application;

[0024] Figure 5 is a schematic diagram of the three-dimensional structure of the door opening and closing mechanism of an embodiment of the present application from another perspective;

[0025] Figure 6 is a schematic cross-sectional structural diagram of a clutch device according to an embodiment of the present application. At this time, the clutch device is in a disengaged state;

[0026] Figure 7 It is a schematic diagram of the explosion structure of a clutch device according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] With the development of automation and intelligence of household appliances, some existing household appliances have automatic door opening and closing devices between the cabinet and the door to achieve automatic opening and closing of the door on the cabinet.

[0030] See also Figures 1 to 3 , Figure 1 It is a three-dimensional structural schematic diagram of a box assembly according to an embodiment of the present application, wherein the box assembly is in a closed state, and a door opening and closing mechanism is arranged on the door body; Figure 2 is a top view schematic diagram of a box assembly of an embodiment of the present application, wherein the box assembly is in a closed state, and a door opening and closing mechanism is disposed on the box; Figure 3 It is a top view schematic diagram of a box assembly according to an embodiment of the present application, wherein the box assembly is in an open state and a door opening and closing mechanism is disposed in the box.

[0031] An embodiment of the present application provides a box assembly 100. The box assembly 100 includes a box 110, a door 120, a hinge mechanism 130, and a door opening and closing mechanism 200. The door 120 is used to open or close the box 110. The hinge mechanism 130 pivotally connects the box 110 and the door 120. The door opening and closing mechanism 200 is disposed on the box 110 or the door 120, and is used to drive the door 120 to rotate relative to the box 110. The box assembly 100 of the present application can realize automatic door opening and closing functions, manual door opening and closing, and power-assisted door opening and closing functions during manual operation.

[0032] The box assembly 100 in the present application can be a refrigeration device such as a refrigerator or a beverage cabinet, or the box assembly 100 can also be a cleaning device such as a dishwasher, a washing machine, a dryer, or the box assembly 100 can also be furniture such as a cabinet. Of course, the box assembly 100 can also be other equipment with a box door structure, which are not listed here one by one.

[0033] The door opening and closing mechanism 200 in the present application can be used on a box assembly 100 having one or more door bodies 120. The door opening and closing mechanism 200 can be installed on the box assembly 100 individually or in combination.

[0034] The door opening and closing mechanism 200 in the present application can be installed at the top, bottom or inside of the box body 110; or, the door opening and closing mechanism 200 can be installed at the top, bottom or inside of the door body 120.

[0035] Please continue reading Figures 4 to 5 , Figure 4 This is a schematic diagram of the overall structure of a door opening and closing mechanism according to an embodiment of the present application; Figure 5 It is a three-dimensional structural schematic diagram of the door opening and closing mechanism of an embodiment of the present application from another perspective.

[0036] The following is a detailed description of the embodiment of the door opening and closing mechanism 200:

[0037] An embodiment of the present application provides a door opening and closing mechanism 200, which includes a driving assembly 210, a revolving door device 240 and a clutch device 300. The driving assembly 210 has a rotation output shaft 211. The driving assembly 210 and the driving assembly 210 are arranged in one of the box body 110 and the door body 120, and act on the other of the box body 110, the door body 120 or the hinge mechanism 130 to drive the door body 120 to rotate. The revolving door device 240 has a rotation input member 241. The clutch device 300 is arranged between the driving assembly 210 and the revolving door device 240, and is used to realize the engagement and separation of the driving assembly 210 and the revolving door device 240, and is specifically used to realize the engagement or separation of the rotation output shaft 211 and the rotation input member 241. When the clutch device 300 engages the rotating output shaft 211 and the rotating input member 241, the power of the driving component 210 can be transmitted to the revolving door device 240, thereby realizing automatic opening and closing of the door body 120; when the clutch device 300 separates the rotating output shaft 211 and the rotating input member 241, the power transmission between the driving component 210 and the revolving door device 240 can be cut off, and the user can manually operate the free-rotating door body 120.

[0038] Please continue reading Figure 6 and Figure 7 , Figure 6 is a schematic cross-sectional structural diagram of a clutch device according to an embodiment of the present application. At this time, the clutch device is in a disengaged state; Figure 7 It is a schematic diagram of the explosion structure of a clutch device according to an embodiment of the present application.

[0039] The clutch device 300 includes a coupling sleeve 330, a coupling member 301 and a driving spindle 350. The coupling sleeve 330 is used to dock with the revolving door device 240, and can be used to be coaxially fixed with the rotating input member 241 of the revolving door device 240. The driving spindle 350 is used to dock with the driving assembly 210, and can be coaxially fixed with the rotating output shaft 211. When it is necessary to realize automatic opening and closing of the door, the rotating output shaft 211 drives the driving spindle 350 to rotate, so that the coupling member 301 can be abutted against the coupling sleeve 330 to drive the coupling sleeve 330 to rotate, the clutch device 300 is in an engaged state, and the revolving door device 240 drives the door body 120 to rotate to open or close. The driving assembly 210 stops driving the driving spindle 350 to rotate, the coupling member 301 can be separated from the coupling sleeve 330, the clutch device 300 is in a separated state, and the revolving door device 240 is not controlled by the driving assembly 210.

[0040] Further, the coupling member 301 includes a protective ring 310, at least one transmission pin 320 and a pressing member 370. The transmission pin 320 is movably arranged on the protective ring 310 along the radial direction of the protective ring 310, and the protective ring 310 plays a supporting and limiting role for the transmission pin 320. The coupling sleeve 330 is sleeved on the outer side of the protective ring 310 and is coaxially fixed with the rotating input member 241. At least one meshing groove 331 is formed on the inner side of the coupling sleeve 330, and the meshing groove 331 is arranged one-to-one with the transmission pin 320. The driving spindle 350 is coaxially fixed with the rotating output shaft 211, and the driving spindle 350 is located in the protective ring 310. When the driving main shaft 350 does not rotate, the transmission pin shaft 320 can be retracted into the protective ring 310, and the clutch device 300 is in a disengaged state; when the driving main shaft 350 rotates, the driving main shaft 350 rotates to push the transmission pin shaft 320 to extend and be clamped in the engagement groove 331, and each transmission pin shaft 320 is in an engaged state with the coupling sleeve 330, which can drive the coupling sleeve 330 to rotate synchronously, and the clutch device 300 is in an engaged state.

[0041] In addition, when the driving spindle 350 starts to drive the joint member 301 to dock with the coupling sleeve 330, the coupling sleeve 330 remains stationary, and the protective ring 310 is driven by the driving spindle 350 to rotate at a relatively fast speed, and the transmission pin 320 may not be able to be quickly engaged with the engagement groove 331. The joint member 301 also includes a clamping member 370. The protective ring 310 can rotate relative to the clamping member 370, and the clamping member abuts against the protective ring 310. Since the clamping member 370 abuts against the protective ring 310, the clamping member 370 can apply a predetermined pressure to the protective ring 310. When the driving spindle 350 starts to drive the protective ring 310 to rotate, there is friction between the contact surface of the clamping piece 370 and the protective ring 310. The friction can hinder the rotation of the protective ring 310. Therefore, the starting speed increase of the protective ring 310 is slow. When the transmission pin shaft 320 is aligned with the meshing groove 331, it has sufficient time to extend out of the protective ring 310 and snap into the meshing groove 331. The coupling member 301 and the coupling sleeve 330 can be efficiently and accurately engaged, thereby improving the engagement efficiency of the coupling member 301 and the coupling sleeve 330 of the clutch device 300.

[0042] It should also be noted that, after the protective ring 310 starts to rotate normally, the friction between the pressing member 370 and the protective ring 310 is converted into a stable sliding friction force, and the sliding friction force to be overcome is relatively small, and the pressure applied by the pressing member 370 to the protective ring 310 will not affect the normal rotation of the protective ring 310. The predetermined pressure applied by the pressing member 370 to the protective ring 310 can be adjusted according to actual conditions, which can improve the docking efficiency of the transmission pin shaft 320 into the coupling sleeve 330 and does not affect the load of the driving spindle 350.

[0043] The clutch device 300 of the present application adopts a purely mechanical structure. The drive assembly 210 outputs rotation to achieve the engagement of the drive assembly 210 and the revolving door device 240. The drive assembly 210 stops outputting rotation to achieve the separation of the drive assembly 210 and the revolving door device 240. No additional electronic control system and drive device are required to cooperate. The structure is simple and compact, the number of related parts is small, the overall volume is small, and the installation adaptability is strong. In addition, the clutch device 300 of the present application realizes driving through meshing, and the engagement of the drive assembly 210 and the revolving door device 240 is more stable. The pressing member 370 can further improve the engagement efficiency and engagement accuracy of the engagement member 301 and the coupling sleeve 330.

[0044] In some embodiments, the clamping member 370 includes a limit seat 371 and a pressure block 372. The limit seat 371 is sleeved outside the protective ring 310, and the protective ring 310 is rotatably disposed on the limit seat 371. The pressure block 372 is disposed on the limit seat 371 and abuts against the protective ring 310 to apply a predetermined pressure to the protective ring 310. The limit seat 371 is fixedly disposed on the box body 110 or the door body 120 to which the revolving door device 240 is fixed, so as to provide a certain support for the protective ring 310 and the pressure block 372. The limit seat 371 and the coupling sleeve 330 are disposed at an axial interval with respect to the protective ring 310.

[0045] In some embodiments, the pressing member 370 further includes a spring pin 373. One end of the spring pin 373 is disposed on the limiting seat 371, and the other end is inserted into the pressing block 372 to push the pressing block 372 against the protective ring 310. The spring pin 373 can push the pressing block 372 to apply a predetermined pressure to the protective ring 310, and the spring pin 373 can limit the pressing block 372 to rotate with the protective ring 310 to a certain extent. The spring pin 373 has elastic force. On the one hand, when the protective ring 310 has a size change due to specification changes, installation errors or use wear, the spring pin 373 can drive the pressing block 372 to press against the protective ring 310, and the adaptability is stronger; on the other hand, when the protective ring 310 rotates, the elastic spring pin 373 can allow the pressing block 372 to have a certain position fluctuation, thereby reducing the wear of the pressing block 372 and the protective ring 310 caused by hard friction between the pressing block 372 and the protective ring 310.

[0046] Specifically, the spring pin 373 can be fixed to the limiting seat 371 by a fastener. One end of the spring pin 373 inserted in the pressing block 372 can be fixed to the pressing block 372, or only inserted in the pressing block 372.

[0047] In some other embodiments, the pressing member 370 further includes an adjusting bolt (not shown in the figure). One end of the adjusting bolt is disposed on the limiting seat 371, and the other end is threadedly connected to the pressing block 372 to adjust the predetermined pressure applied by the pressing block 372 to the protective ring 310, so that the pressing force of the pressing block 372 on the protective ring 310 is appropriate.

[0048] Of course, in some embodiments, the pressing block 372 may also be directly fixed to the inner side of the limiting seat 371 .

[0049] In order to prevent the pressing block 372 from rotating with the protection ring 310, it is necessary to limit the position of the pressing block 372. In some embodiments, a first limiting portion 375 is provided in the limiting seat 371, and the pressing block 372 has a second limiting portion 376 on the side facing the limiting seat 371. When the protection ring 310 rotates, the first limiting portion 375 and the second limiting portion 376 abut against each other in the rotation direction of the protection ring 310, and the position of the pressing block 372 in the circumferential direction remains stable and does not rotate with the protection ring 310, so that a stable pressing force can be applied to the protection ring 310.

[0050] Specifically, the first limiting portion 375 is a trapezoidal groove provided inside the protective ring 310, the pressing block 372 forms a matching trapezoidal protrusion facing the limiting seat 371, and the second limiting portion 376 is the trapezoidal protrusion. At this time, when the protective ring 310 rotates forward and reversely, the first limiting portion 375 and the second limiting portion 376 can abut against each other to limit the rotation of the pressing block 372. Of course, in other embodiments, the first limiting portion 375 and the second limiting portion 376 can also be other limiting structures, which are not limited here.

[0051] In some embodiments, an annular groove 313 is formed outside the protective ring 310, and the pressing block 372 is embedded in the annular groove 313, and the pressing block 372 has an arc surface matching the annular groove 313 on the side facing the protective ring 310. Since the pressing block 372 is embedded in the annular groove 313, the axial position of the pressing block 372 in the protective ring 310 is limited, and the position of the pressing block 372 is more stable; and the radial space of the engaging member 301 is more compact and the volume is small, so that the clutch device 300 is more compact as a whole.

[0052] In order to maintain the separation state of the clutch device 300 when the driving assembly 210 is not working, in some embodiments, the engaging member further includes at least one elastic member 340. The elastic member 340 is arranged in a one-to-one correspondence with the transmission pin shaft 320, and the elastic member 340 is arranged on the protective ring 310. When the driving main shaft 350 does not rotate, the clutch device 300 is in a separation state; when the driving main shaft 350 rotates, the driving main shaft 350 rotates to push the transmission pin shaft 320 to compress the elastic member 340, and the transmission pin shaft 320 extends out and is clamped in the meshing groove 331. Each transmission pin shaft 320 is in a meshing state with the coupling sleeve 330, which can drive the coupling sleeve 330 to rotate synchronously, and the clutch device 300 is in a meshing state.

[0053] In other embodiments, the transmission pin 320 can be retracted into the protective ring 310 when the driving main shaft 350 does not rotate by other means, for example, the meshing groove 331 of the coupling sleeve 330 cooperates with the transmission pin 320 through an inclined surface, and when the driving main shaft 350 does not output a rotational driving force, the coupling sleeve 330 rotates to push the transmission pin 320 back into the protective ring 310 to avoid affecting the manual opening of the door body 120. Of course, the retraction of the transmission pin 320 can also be achieved by other structures, and different structures can also be used alone or in combination, which is not limited here.

[0054] In some embodiments, the protective ring 310 is provided with at least one accommodating groove 311, and the accommodating groove 311 is arranged one by one with the transmission pin shaft 320. The accommodating groove 311 extends radially along the protective ring 310, and the transmission pin shaft 320 can move radially along the protective ring 310. The arrangement of the protective ring 310 can ensure that each transmission pin shaft 320 rotates synchronously. A limited position convex edge 312 is arranged in the accommodating groove 311, and the transmission pin shaft 320 forms a step portion 321 toward one end of the driving main shaft 350, and one end of the elastic member 340 abuts against the step portion 321, and the other end abuts against the limited position convex edge 312. The elastic member 340 is in a compressed state, and its resilience drives the transmission pin shaft 320 to retract into the coupling sleeve 330. When the driving main shaft 350 rotates, the driving main shaft 350 pushes the transmission pin shaft 320 to extend outward, and the elastic member 340 is further compressed, and the transmission pin shaft 320 extends out of the accommodating groove 311 to the meshing groove 331.

[0055] Specifically, the limiting protrusion 312 is located at an opening of the accommodating groove 311 facing the coupling sleeve 330 .

[0056] In some embodiments, the driving spindle 350 has at least one gear tooth 351, and the gear tooth 351 is arranged one-to-one with the driving pin shaft 320. The driving pin shaft 320 is formed with an arc concave surface 322 at one end facing the driving spindle 350. When the driving spindle 350 rotates, the gear tooth 351 pushes the driving pin shaft 320 to extend outward along the arc concave surface 322. When the gear tooth 351 is facing the middle of the arc concave surface 322, the elastic member 340 can drive the driving pin shaft 320 to retract into the coupling sleeve 330.

[0057] Therefore, when the driving component 210 is energized, the driving main shaft 350 rotates, and the gear teeth 351 push the transmission pin shaft 320 outward along the arc concave surface 322. When the transmission pin shaft 320 engages with the engagement groove 331 of the coupling sleeve 330, the gear teeth 351 press against the arc concave surface 322 of the transmission pin shaft 320, and the gear teeth 351 drive the transmission pin shaft 320 to rotate synchronously. The coupling sleeve 330 rotates synchronously with the transmission pin shaft 320, and the clutch device 300 is in an engaged state, and the driving component 210 and the revolving door device 240 are engaged. When the door body 120 is opened and closed, the driving component 210 is powered off, the driving main shaft 350 stops rotating, and the resilience of the elastic member 340 drives the transmission pin shaft 320 to move into the coupling sleeve 330. The arc concave surface 322 pushes the transmission pin shaft 320 to rotate until the gear 351 is opposite to the middle of the arc concave surface 322. The transmission pin shaft 320 is completely retracted into the coupling sleeve 330, and the clutch device 300 is in a disengaged state. The driving component 210 and the revolving door device 240 are separated.

[0058] Specifically, a plurality of transmission pins 320 are provided, and the plurality of transmission pins 320 are centrally symmetrically arranged on the protection ring 310. The transmission pins 320 on the protection ring 310 are evenly distributed, and when the transmission pins 320 are engaged with the coupling sleeve 330, the coupling sleeve 330 can be stably driven to rotate.

[0059] When the driving main shaft 350 rotates, in order to make the transmission pin shaft 320 smoothly mesh with the meshing groove 331 of the coupling sleeve 330, the size of the transmission pin shaft 320 toward one end of the coupling sleeve 330 is gradually reduced to form a guide portion 323. The meshing groove 331 is in a trumpet shape that expands toward the protective ring 310. The end size of the transmission pin shaft 320 is small, and the opening side size of the meshing groove 331 is large, so that the transmission pin shaft 320 is easier to smoothly snap into the meshing groove 331. When the transmission pin shaft 320 is snapped into the meshing groove 331, the size of the transmission pin shaft 320 matches that of the meshing groove 331, and the coupling sleeve 330 can be stably driven to rotate.

[0060] The following continues to introduce other structures in the door opening and closing mechanism 200 of the present application. The swing door device 240 includes a translation assembly 220 and a linkage rod 230. The translation assembly 220 includes a rack 221 slidably disposed on one of the box body 110 and the door body 120, and a transmission gear 222 meshed with the rack 221. The transmission gear 222 is the rotation input member 241 of the swing door device 240. The linkage rod 230 includes a first end 231 and a second end 232 disposed opposite to each other. The first end 231 of the linkage rod 230 is rotationally disposed on the rack 221, and the second end 232 of the linkage rod 230 is rotationally disposed on the other of the box body 110 and the door body 120 or rotationally disposed on the hinge mechanism 130 of the box assembly 100. By providing the above-mentioned connecting rod 230 , the translation assembly 220 drives the first end 231 of the connecting rod 230 to move so as to realize the swing of the connecting rod 230 , and the door body 120 is synchronously subjected to force and can rotate relative to the box body 110 .

[0061] The clutch device 300 is disposed between the driving assembly 210 and the translation assembly 220, and is used to engage or disengage the driving assembly 210 and the translation assembly 220, that is, to achieve engagement and disengagement of the rotating output shaft 211 and the transmission gear 222. When the driving assembly 210 is engaged with the translation assembly 220, the driving assembly 210 can transmit power to the transmission gear 222, and the transmission gear 222 rotates to drive the rack 221 meshed therewith to translate, and the rack 221 can drive the first end 231 of the linkage rod 230 to move, and the linkage rod 230 swings to drive the door body 120 to rotate relative to the box body 110, thereby realizing the automatic door opening and closing function. When the clutch device 300 separates the driving assembly 210 from the translation assembly 220, the power transmission between the driving assembly 210 and the translation assembly 220 can be cut off, and the transmission gear 222 is in a free sliding state. When the door body 120 is rotated under force, the linkage rod 230 can drive the rack 221 to move, thereby realizing manual door opening and closing. By providing the door opening and closing mechanism 200 , the user can freely choose to manually open and close the door or use the automatic door opening and closing function, and can also realize the power-assisted door opening and closing function, and the door opening and closing mechanism 200 has diversified functions.

[0062] In addition, the translation assembly 220 of the present application uses a rack 221 and a transmission gear 222 for transmission. The rack 221 and the transmission gear 222 have a compact structure. Under the same driving stroke, the rack 221 and the transmission gear 222 can effectively shorten the length of the translation assembly 220. The translation assembly 220 has a simple and compact structure and a small volume. The overall volume of the door opening and closing mechanism 200 is more compact, does not occupy the space of the box assembly 100, and is particularly suitable for installation in the box 110. In other embodiments, the translation assembly 220 can also use other structures such as a screw rod and a screw block to achieve translation drive.

[0063] The door opening and closing mechanism 200 of the present application has a compact overall structure, reliable transmission, strong adaptability, and can realize large-angle door opening and closing within a limited size.

[0064] By setting the door opening and closing mechanism 200, the automatic door opening and closing function can be realized, and the automatic door opening and closing process is as follows: the door opening command is obtained, the door opening and closing mechanism 200 is powered, the clutch device 300 engages the driving assembly 210 and the translation assembly 220, the driving assembly 210 transmits power to the translation assembly 220, the translation assembly 220 can drive the first end 231 of the linkage rod 230 to move, and the door body 120 is forced to rotate relative to the box body 110 to open the box body 110. The door closing command is obtained, the driving assembly 210 transmits power to the translation assembly 220, the translation assembly 220 can drive the first end 231 of the linkage rod 230 to move in the opposite direction, the door body 120 is forced to rotate relative to the box body 110 to close the box body 110, and after the door body 120 is closed, the clutch device 300 separates the driving assembly 210 and the translation assembly 220.

[0065] By setting the door opening and closing mechanism 200, the power-assisted door opening and closing function during manual operation can also be realized. The power-assisted door opening and closing function is as follows: when the user manually operates the door opening and closing, the door opening and closing mechanism 200 is powered, the clutch device 300 engages the drive assembly 210 and the translation assembly 220, the drive assembly 210 transmits power to the translation assembly 220, and the translation assembly 220 can drive the first end 231 of the linkage rod 230 to move, thereby realizing power-assisted door opening and closing. Since the user adds manual operation at this time, in order to improve the safety of use, if there is abnormal resistance during the power-assisted door opening and closing process due to manual operation or other obstacles, the drive assembly 210 stops driving, the clutch device 300 separates the drive assembly 210 and the translation assembly 220, and the door body 120 stops automatically rotating.

[0066] The door opening and closing mechanism 200 of the present application can realize the automatic door opening and closing function and the power-assisted door opening and closing function during manual operation, realizing automation and intelligence. In some box assemblies 100 that are provided with an adsorption structure between the box body 110 and the door body 120 or that maintain internal and external negative pressure, the door opening and closing mechanism 200 can make it easier for the user to open the door body 120. The door opening and closing mechanism 200 can also ensure that the door body 120 is effectively closed to improve the sealing performance.

[0067] Since the door opening and closing mechanism 200 has a clutch device 300, in scenarios such as power outages, the clutch device 300 can place the drive assembly 210 and the translation assembly 220 in a separated state, and the first end 231 of the connecting rod 230 can move on the translation assembly 220 as the door body 120 rotates, and the user can freely open or close the door body 120.

[0068] When the translation assembly 220 is disposed at the top or bottom of the door body 120, the rack 221 can be extended along the width direction of the door body 120. The overall structure of the door opening and closing mechanism 200 is more compact, the layout is reasonable, and the space occupied is small. Of course, the rack 221 can also be extended along other directions.

[0069] When the translation assembly 220 is disposed at the top or bottom of the box 110, the rack 221 can be extended along the depth direction of the box 110. The translation assembly 220 can be disposed on one side of the box 110 close to the hinge mechanism 130 of the corresponding door body 120, thereby shortening the driving stroke of the linkage rod 230, making the overall structure of the door opening and closing mechanism 200 more compact and occupying less space. Of course, the rack 221 can also be extended along other directions.

[0070] In other embodiments, the translation assembly 220 may also be other driving structures that can drive the second end 232 of the linkage rod 230 to translate.

[0071] In some embodiments, the driving assembly 210, the translation assembly 220 and the clutch device 300 are disposed on the door body 120, the first end 231 of the linkage rod 230 is rotatably disposed on the translation assembly 220, and the second end 232 of the linkage rod 230 is rotatably disposed on the box body 110 or the hinge mechanism 130. The configuration of the linkage rod 230 and the hinge position of the second end 232 thereof can be adjusted according to the trajectory of the door body 120 during the opening process to better apply force to the door body 120 and avoid interference. For example, the linkage rod 230 can be linear.

[0072] In some other embodiments, the driving assembly 210, the translation assembly 220 and the clutch device 300 are disposed on the housing 110, the first end 231 of the linkage rod 230 is rotatably disposed on the translation assembly 220, and the second end 232 of the linkage rod 230 is rotatably disposed on the door body 120 or the hinge mechanism 130. The configuration of the linkage rod 230 and the hinge position of the second end 232 thereof can be adjusted according to the trajectory of the door body 120 during the opening process to better apply force to the door body 120 and avoid interference. For example, the linkage rod 230 can be arc-shaped.

[0073] In some embodiments, the hinge mechanism 130 is a multi-link hinge. The hinge mechanism 130 includes a box body fixing seat 131 disposed on the box body 110, a door body fixing seat 132 disposed on the door body 120, and a connecting rod assembly 133 that hinges the door body fixing seat 132 and the box body fixing seat 131. The second end 232 of the linkage rod 230 can be rotatably disposed on the connecting rod assembly 133, and at this time, the linkage rod 230 can reduce or avoid interference with the connecting rod assembly 133 during the rotation of the door body 120. The door opening and closing mechanism 200 has a reasonable structural design and layout, and can be used for the box body assembly 100 for opening and closing doors at large angles, and is particularly suitable for automatic opening and closing doors of embedded home appliances and furniture products.

[0074] Of course, the second end 232 of the linkage rod 230 can also be rotatably disposed on the box body fixing seat 131 or the door body fixing seat 132 according to actual conditions.

[0075] Please continue reading Figure 5 , Figure 5 It is a three-dimensional structural schematic diagram of the door opening and closing mechanism of an embodiment of the present application from another perspective.

[0076] In some embodiments, the driving assembly 210 further includes a gear set 212, which includes a driving gear 213, a driven gear 214 and at least one intermediate gear 215. The driving gear 213 is coaxially fixed to the rotating output shaft 211. The driven gear 214 is coaxially fixed to the driving main shaft 350. The driving gear 213 and the driven gear 214 are arranged at intervals along the length direction of the rack 221. The intermediate gear 215 is meshed and arranged between the driving gear 213 and the driven gear 214. The intermediate gear 215 plays a transmission role between the driving gear 213 and the driven gear 214. By providing the driving gear 213, the driven gear 214 and the intermediate gear 215, the power output by the rotating output shaft 211 of the driving assembly 210 can be sequentially transmitted to the driving main shaft 350 of the clutch device 300 through the driving gear 213, the intermediate gear 215 and the driven gear 214.

[0077] By providing the gear set 212, the drive assembly 210 can be extended along the length direction of the translation assembly 220, thereby reducing the size of the door opening and closing mechanism 200, making the overall structure of the door opening and closing mechanism 200 more compact and having a reasonable layout. Of course, in other embodiments, the rotation output shaft 211 of the drive assembly 210 can be directly coaxially fixed with the drive main shaft 350 of the clutch device 300.

[0078] The number of the intermediate gears 215 can be determined according to the size and spacing of the driving gear 213 and the driven gear 214. The intermediate gears 215 can reduce the diameters of the driving gear 213 and the driven gear 214, thereby compressing the height dimension of the door opening and closing mechanism 200. When the driving gear 213 and the driven gear 214 can be directly meshed, the intermediate gears can be omitted.

[0079] In some embodiments, the door opening and closing mechanism 200 further includes a position monitoring component. The position monitoring component includes a sensor 251 and a trigger 252. The sensor 251 is extended along the length direction of the translation component 220 and fixed to the corresponding box 110 or the corresponding door body 120. The trigger 252 is arranged on the rack 221. The sensor 251 senses the position of the trigger 252. The trigger 252 is always in contact with the sensor 251. During the rotation of the door body 120, the trigger 252 moves synchronously with the rack 221. The sensor 251 senses the position change of the trigger 252 to obtain the position of the rack 221, and then obtains the rotation angle of the door body 120. When the sensor 251 senses that the trigger 252 moves to a predetermined position, indicating that the door body 120 is opened or closed in place, the sensor 251 sends a signal to the drive component 210, and the drive component 210 stops driving.

[0080] The door opening and closing mechanism 200 of the present application has a simple and compact structure and a reasonable layout, does not occupy the space of the box assembly 100, and can be used for automatic door opening and closing of the box assembly 100 at a large angle, and is particularly suitable for automatic door opening and closing of the embedded box assembly 100, solving the problem of automatic door opening and closing in a compact installation environment. The box assembly 100 using the door opening and closing mechanism 200 of the present application can realize the automatic door opening and closing function, the manual door opening and closing, and the power-assisted door opening and closing function during manual operation.

[0081] It should be noted that the terms "horizontal", "vertical" and the like do not mean that the components are absolutely horizontal or vertical, but can be slightly tilted; the terms "parallel", "vertical" and the like do not mean that the components are absolutely parallel or vertical, but can form a certain angle deviation. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In addition, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the present application is usually placed when used, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0082] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A clutch device, characterized in that: The clutch device is used to be arranged between the driving assembly and the revolving door device to realize the engagement and separation of the driving assembly and the revolving door device. The clutch device includes: The engaging member comprises a protective ring, at least one driving pin and a pressing member, wherein the driving pin is movably arranged on the protective ring, the protective ring can rotate relative to the pressing member, and the pressing member abuts against the protective ring; A coupling sleeve, used for docking with the revolving door device, the coupling sleeve is arranged outside the protective ring, and an engaging groove corresponding to the driving pin shaft is formed on the inner side of the coupling sleeve; The driving spindle is located in the protective ring. The driving spindle is used to dock with the driving component. The driving component drives the driving spindle to rotate, which can drive the transmission pin shaft to extend out and be clamped in the engagement groove. When the driving component stops driving, the transmission pin shaft can be retracted into the protective ring.

2. The clutch device according to claim 1, characterized in that: The pressing member comprises: A limit seat, sleeved outside the protective ring, and the protective ring is rotatably arranged on the limit seat; The pressing block is arranged on the limiting seat and abuts against the protective ring to apply a predetermined pressure to the protective ring.

3. The clutch device according to claim 2, characterized in that: A first limiting portion is arranged in the limiting seat, and the pressing block has a second limiting portion on a side facing the limiting seat. In the rotation direction of the protective ring, the first limiting portion and the second limiting portion abut against each other to limit the rotation of the pressing block.

4. The clutch device according to claim 2, characterized in that: The pressing member also includes a spring pin, one end of which is arranged on the limiting seat and the other end is inserted into the pressing block to push the pressing block to press against the protective ring.

5. The clutch device according to claim 2, characterized in that: The clamping member further comprises an adjusting bolt, one end of which is arranged on the limiting seat, and the other end of which is threadedly connected to the pressing block, so as to adjust the predetermined pressure applied by the pressing block to the protective ring.

6. The clutch device according to claim 2, characterized in that: An annular groove is formed outside the protection ring, the pressing block is embedded in the annular groove, and the pressing block has an arc surface matching the annular groove.

7. The clutch device according to claim 1, characterized in that: The protection ring is provided with a receiving groove which is arranged in one-to-one correspondence with the driving pin shaft, the receiving groove extends radially along the protection ring, and the driving pin shaft is movably arranged in the receiving groove along the radial direction of the protection ring.

8. The clutch device according to claim 1, characterized in that: The engaging member further comprises at least one elastic member, wherein the elastic member is disposed in one-to-one correspondence with the driving pin shaft, and the elastic member is used for driving the driving pin shaft to be retracted into the protective ring.

9. The clutch device according to claim 1, characterized in that: The driving main shaft has at least one gear tooth, and the gear tooth is arranged in a one-to-one correspondence with the transmission pin shaft; the transmission pin shaft forms an arc concave surface at one end facing the driving main shaft, and when the driving main shaft rotates, the gear tooth pushes the transmission pin shaft to extend outward along the arc concave surface, and when the gear tooth is facing the middle of the arc concave surface, the transmission pin shaft can be retracted into the coupling sleeve.

10. A door opening and closing mechanism, characterized in that: Used to be arranged in a box assembly, the box assembly includes a box and a door body rotatably arranged on the box, the door opening and closing mechanism is arranged in one of the box and the door body, and the door opening and closing mechanism includes: A revolving door device, disposed between the box body and the door body, and used for driving the door body to rotate; A driving assembly, used for providing power to the revolving door device; A clutch device is arranged between the revolving door device and the driving assembly, and the clutch device adopts the clutch device described in any one of claims 1-9.

11. The door opening and closing mechanism according to claim 10, characterized in that: The revolving door device comprises: A translation assembly, comprising a rack slidably disposed on one of the box body and the door body, and a transmission gear meshing with the rack; A connecting rod, wherein a first end of the connecting rod is rotatably disposed on the rack, and a second end of the connecting rod is rotatably disposed on the other of the box body and the door body or a hinge mechanism of the box body assembly.

12. A box assembly, characterized in that: include: Box; A door body, used for opening or closing the box body; A hinge mechanism pivotally connecting the box body and the door body; The door opening and closing mechanism as described in any one of claims 10-11 is used to drive the door body to rotate relative to the box body.

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