Clutch device, door opening and closing mechanism and box assembly

Abstract

The utility model 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 revolving door device so as to achieve connection and separation of the driving assembly and the revolving door device, the clutch device comprises a connection component, a clutch assembly and a clutch assembly, the connection component comprises a protection ring and at least one transmission pin shaft, and the transmission pin shaft is movably arranged on 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 application belongs to the technical field of intelligent household appliances, and particularly relates to a clutch device, a door opening and closing mechanism and a box assembly. BACKGROUND

[0002] The clutch device is a commonly used component in mechanical transmission, and can separate or engage the transmission system at any time. With the development of automation and intelligence of household devices, the clutch device is used in some household devices. For example, the box and the door body of some existing household devices are connected through an automatic door opening and closing device to realize automatic opening and closing of the door body on the box. In order to facilitate users to freely select manual door opening and closing 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 clutch device has the problems of complex structure and large size. CONTENT OF THE UTILITY MODEL

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

[0005] To solve the above technical problems, one technical scheme adopted by the application is a clutch device used for being arranged between a driving assembly and a rotating door device to realize engagement and separation of the driving assembly and the rotating door device. The clutch device comprises: an engagement member comprising a protection ring and at least one transmission pin shaft, the transmission pin shaft being movably arranged in the protection ring; a combination sleeve used for being connected with the rotating door device, the combination sleeve being sleeved outside the protection ring, and the inside of the combination sleeve being formed with meshing grooves corresponding to the transmission pin shaftes; and a driving gear located in the protection ring, the driving gear being used for being connected with the driving assembly, the driving assembly driving the driving gear to rotate, the transmission pin shaft being driven to extend out of the protection ring and be clamped into the meshing groove, and the transmission pin shaft being capable of being withdrawn into the protection ring when the driving assembly stops driving.

[0006] According to an embodiment of the application, the protection ring is provided with accommodation grooves corresponding to the transmission pin shaftes, the accommodation grooves extending along the radial direction of the protection ring, and the transmission pin shaftes movably arranged in the accommodation grooves along the radial direction of the protection ring.

[0007] According to an embodiment of the application, the engagement member further comprises at least one elastic member corresponding to the transmission pin shaftes, and the elastic member is used for driving the transmission pin shaft to be withdrawn into the protection ring.

[0008] According to an embodiment of the present application, the accommodating groove is provided with a limiting protrusion, the transmission pin shaft is formed with a stepped portion at one end thereof facing the driving gear, and the elastic member is abutted at one end against the stepped portion and at the other end against the limiting protrusion.

[0009] According to an embodiment of the present application, the driving gear is provided with at least one tooth, and the tooth is provided in one-to-one correspondence with the transmission pin shaft; the transmission pin shaft is formed with a circular arc concave surface at one end thereof facing the driving gear, and when the driving gear rotates, the tooth pushes the transmission pin shaft outward along the circular arc concave surface, and when the tooth is directly opposite the middle part of the circular arc concave surface, the transmission pin shaft can be retracted into the coupling sleeve.

[0010] According to an embodiment of the present application, a plurality of transmission pin shafts are provided, and the plurality of transmission pin shafts are centrally symmetrically arranged on the protective ring.

[0011] According to an embodiment of the present application, the transmission pin shaft is gradually reduced in size at one end thereof facing the coupling sleeve to form a guide portion, and the meshing groove is in the shape of a horn that expands in the direction of the protective ring.

[0012] To solve the above technical problems, another technical solution adopted by the present application is: a door opening and closing mechanism, which is arranged in a box assembly, the box assembly comprising a box and a door body rotatably arranged in the box, the door opening and closing mechanism comprising: a rotating door device arranged between the box and the door body and used for driving the door body to rotate; a driving assembly used for providing power for the rotating door device; and a clutch device arranged between the rotating door device and the driving assembly, wherein the clutch device adopts the above-mentioned clutch device.

[0013] According to an embodiment of the present application, the rotating door device comprises: a translation assembly arranged in one of the box and the door body and used for being connected to the coupling sleeve; and a linkage rod, a first end of the linkage rod being rotatably arranged in the translation assembly, and a second end of the linkage rod being rotatably arranged in the other one of the box and the door body or a hinge mechanism of the box assembly; the translation assembly can drive the first end to move to realize swinging of the linkage rod, thereby driving the door body to rotate relative to the box.

[0014] According to an embodiment of the present application, the translation assembly comprises: a lead screw rotatably arranged in the box or the door body, the lead screw being coaxially fixed with the coupling sleeve; and a screw block threadedly connected with the lead screw, the second end of the linkage rod being rotatably arranged in the screw block.

[0015] According to an embodiment of the present application, the door opening and closing mechanism further comprises a position monitoring assembly, which comprises a sensor arranged along the length direction of the screw rod and a trigger arranged on the screw block, and the sensor senses the position of the trigger.

[0016] According to an embodiment of the present application, the screw rod is arranged on the top, bottom or inside of the box body and extends along the depth direction of the box body, or the screw rod is arranged on the top, bottom or inside of the door body and extends along the width direction of the door body.

[0017] To solve the above technical problems, the present application adopts another technical solution: a box body assembly, comprising: a box body; a door body for opening or closing the box body; a hinge mechanism pivotally connecting the box body and the door body; and a door opening and closing mechanism as described above for driving the door body to rotate relative to the box body.

[0018] The present application has the following advantages: the clutch device of the present application adopts a pure mechanical structure, and the output rotation of the driving assembly can realize the engagement of the driving assembly and the door rotating device, and the stop of the output rotation of the driving assembly can realize the disengagement of the driving assembly and the door rotating device, without the cooperation of an additional electric control system and driving device, so that 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 is driven by meshing, and the engagement of the driving assembly and the door rotating device is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a perspective structural schematic diagram of a box body assembly according to an embodiment of the present application;

[0021] Figure 2 is a top view schematic diagram of a box body assembly according to an embodiment of the present application, wherein the box body assembly is in a closed state;

[0022] Figure 3 is a top view schematic diagram of a box body assembly according to an embodiment of the present application, wherein the box body assembly is in an open state;

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

[0024] Figure 5is a cross-sectional structure schematic diagram of a clutch device of an embodiment of the present application, at this time, the clutch device is in a disengaged state;

[0025] Figure 6 is another perspective cross-sectional structure schematic diagram of a clutch device of an embodiment of the present application, at this time, the clutch device is in a disengaged state;

[0026] Figure 7 is another perspective cross-sectional structure schematic diagram of a clutch device of an embodiment of the present application, at this time, the clutch device is in an engaged state. DETAILED DESCRIPTION

[0027] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the purpose of description, only the parts related to the present application are shown in the drawings, but not all the structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] In this paper, the "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0029] With the development of automation and intelligence of household equipment, the existing part of the household equipment is realized by automatic opening and closing door device between the box body and the door body.

[0030] Please refer to Figure 1 , Figure 1 is a three-dimensional structure schematic diagram of a box assembly of an embodiment of the present application.

[0031] An embodiment of the present application provides a box assembly 100. The box assembly 100 comprises a box body 110, a door body 120, a hinge mechanism 130 and an opening and closing door mechanism 200. The door body 120 is used to open or close the box body 110. The hinge mechanism 130 is pivotally connected to the box body 110 and the door body 120. The opening and closing door mechanism 200 is arranged on the box body 110 and the door body 120, and is used to drive the door body 120 to rotate relative to the box body 110. The box assembly 100 of the present application can realize the functions of automatic opening and closing door, manual opening and closing door, and power-assisted opening and closing door when manually operated.

[0032] The cabinet assembly 100 in the present application can be a refrigeration device such as a refrigerator or a beverage cabinet, or can be a cleaning device such as a dishwasher, a washing machine or a dryer, or can be furniture such as a cabinet, and of course, the cabinet assembly 100 can also be other devices with a cabinet door structure, which will not be listed here.

[0033] The switch door mechanism 200 in the present application can be used on the cabinet assembly 100 with one or more door bodies 120. The switch door mechanism 200 can be installed individually on the cabinet assembly 100 or can be installed in combination.

[0034] The switch door mechanism 200 in the present application can be installed on the top, bottom or inside of the cabinet 110; or the switch door mechanism 200 can be installed on the top, bottom or inside of the door body 120.

[0035] Please continue to refer to Figures 2 to 4 , Figure 2 is a top view schematic diagram of a cabinet assembly according to an embodiment of the present application, wherein the cabinet assembly is in a closed state; Figure 3 is a top view schematic diagram of a cabinet assembly according to an embodiment of the present application, wherein the cabinet assembly is in an open state; Figure 4 is a schematic diagram of the overall structure of a switch door mechanism according to an embodiment of the present application.

[0036] The following will be described in detail in combination with an embodiment of the switch door mechanism 200:

[0037] An embodiment of the present application provides a switch door mechanism 200, which comprises a driving assembly 210, a rotating door device 240 and a clutch device 300. The driving assembly 210 has a rotating output shaft 211 (see Figure 6 ). The rotating door device 240 is arranged between the cabinet 110 and the door body 120 and is used to drive the door body 120 to rotate. The rotating door device 240 has a rotating input member 241. The clutch device 300 is arranged between the driving assembly 210 and the rotating door device 240 and is used to engage or separate the rotating output shaft 211 and the rotating 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 assembly 210 can be transmitted to the rotating door device 240, realizing automatic opening and closing of the door body 120; after the clutch device 300 separates the rotating output shaft 211 and the rotating input member 241, the power transmission between the driving assembly 210 and the rotating door device 240 can be cut off, and the user can manually operate the door body 120 to rotate freely.

[0038] Please continue to refer to Figures 5 to 7 , Figure 5 is a cross-sectional structure schematic diagram of a clutch device according to an embodiment of the present application, at this time, the clutch device is in a separated state; Figure 6is another view of the cross-sectional structure of the clutch device of an embodiment of the present application, and the clutch device is in the disengaged state; Figure 7 is another view of the cross-sectional structure of the clutch device of an embodiment of the present application, and the clutch device is in the engaged state.

[0039] The clutch device 300 comprises an engaging member, a coupling sleeve 330, and a driving gear 350. The coupling sleeve 330 is used to interface with the rotating door device 240, and can be used to be coaxially and oppositely fixed with the rotating input member 241. The driving gear 350 is used to interface with the driving assembly 210, and can be used to be coaxially and oppositely fixed with the rotating output shaft 211. The driving assembly 210 drives the driving gear 350 to rotate, so that the engaging member interfaces with the coupling sleeve 330, and then power is transmitted to the rotating input member 241, and the clutch device 300 is in the engaged state. The driving assembly 210 stops driving the driving gear 350 to rotate, the engaging member is separated from the coupling sleeve 330, and the clutch device 300 is in the disengaged state, and the rotating door device 240 is not controlled by the driving assembly 210.

[0040] The engaging member comprises a protective ring 310 and at least one transmission pin shaft 320. The transmission pin shaft 320 is arranged radially movably on the protective ring 310. The protective ring 310 supports and limits the transmission pin shaft 320. The coupling sleeve 330 is arranged outside 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 shaft 320. The driving gear 350 is coaxially fixed with the rotating output shaft 211, and the driving gear 350 is located in the protective ring 310. When the driving gear 350 does not rotate, the transmission pin shaft 320 can be withdrawn into the protective ring 310, and the clutch device 300 is in the disengaged state. When the driving gear 350 rotates, the driving gear 350 rotates to push the transmission pin shaft 320 to extend and be clamped into the meshing groove 331, and each transmission pin shaft 320 is in the meshing state with the coupling sleeve 330, so as to drive the coupling sleeve 330 to rotate synchronously, and the clutch device 300 is in the engaged state.

[0041] The clutch device 300 in the door opening and closing mechanism 200 of the present application adopts a pure mechanical structure. The driving assembly 210 outputs rotation, so as to realize the engagement of the driving assembly 210 and the rotating door device 240. The driving assembly 210 stops outputting rotation, so as to realize the disengagement of the driving assembly 210 and the rotating door device 240. No additional electric control system and driving device are needed 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 in the door opening and closing mechanism 200 of the present application drives through meshing, and the engagement of the driving assembly 210 and the rotating door device 240 is more stable.

[0042] In some embodiments, the guard ring 310 is provided with at least one accommodation groove 311 corresponding to the transmission pin shaft 320. The accommodation groove 311 extends radially along the guard ring 310, and the transmission pin shaft 320 can move radially along the guard ring 310. The arrangement of the guard ring 310 can ensure that the transmission pin shafts 320 rotate synchronously.

[0043] In order to maintain the disengaged state of the clutch device 300 when the driving assembly 210 is not working, in some embodiments, the engagement member further comprises at least one elastic member 340. The elastic member 340 is arranged corresponding to the transmission pin shaft 320, and is arranged in the guard ring 310. When the driving gear 350 does not rotate, the clutch device 300 is in a disengaged state; when the driving gear 350 rotates, the driving gear 350 rotates to push the transmission pin shaft 320 to compress the elastic member 340, the transmission pin shaft 320 is extended and clamped into the meshing groove 331, and each transmission pin shaft 320 is in meshing 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.

[0044] In other embodiments, the transmission pin shaft 320 can also be retracted into the guard ring 310 when the driving gear 350 does not rotate by other means, for example, the meshing groove 331 of the coupling sleeve 330 and the transmission pin shaft 320 are matched by a slope. When the driving gear 350 does not output rotational driving force, the rotation of the coupling sleeve 330 can drive the transmission pin shaft 320 to retract into the guard ring 310, thereby avoiding affecting the manual opening of the door body 120. Of course, the retraction of the transmission pin shaft 320 can also be achieved by other structures, and different structures can be used alone or in combination, which is not limited here.

[0045] Specifically, the accommodation groove 311 is provided with a limiting protruding edge 312, and the end of the transmission pin shaft 320 towards the driving gear 350 is formed with a step portion 321. One end of the elastic member 340 abuts against the step portion 321, and the other end abuts against the limiting protruding edge 312. The elastic member 340 is in a compressed state, and the elastic force thereof drives the transmission pin shaft 320 to retract into the coupling sleeve 330. When the driving gear 350 rotates, the driving gear 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 accommodation groove 311 and into the meshing groove 331.

[0046] Specifically, the limiting protruding edge 312 is located at the opening of the accommodation groove 311 towards the coupling sleeve 330.

[0047] In some embodiments, the driving gear 350 has at least one tooth 351, which is arranged one-to-one with the transmission pin shaft 320. The transmission pin shaft 320 is formed with a circular arc concave surface 322 at one end thereof towards the driving gear 350. When the driving gear 350 rotates, the tooth 351 pushes the transmission pin shaft 320 to extend outward along the circular arc concave surface 322. When the tooth 351 is opposite to the middle part of the circular arc concave surface 322, the elastic member 340 can drive the transmission pin shaft 320 to retract into the combination sleeve 330.

[0048] Therefore, when the driving assembly 210 is powered on, the driving gear 350 rotates, the tooth 351 pushes the transmission pin shaft 320 to extend outward along the circular arc concave surface 322. When the transmission pin shaft 320 is engaged into the engagement groove 331 of the combination sleeve 330, the tooth 351 abuts against the circular arc concave surface 322 of the transmission pin shaft 320, the tooth 351 drives the transmission pin shaft 320 to rotate synchronously, the combination sleeve 330 rotates synchronously with the transmission pin shaft 320, the clutch device 300 is in the engaged state, and the driving assembly 210 and the rotating door device 240 are engaged. When the door body 120 is opened or closed to the position, the driving assembly 210 is powered off, the driving gear 350 stops rotating, the elastic member 340 drives the transmission pin shaft 320 to move into the combination sleeve 330, the circular arc concave surface 322 drives the transmission pin shaft 320 to rotate to the middle part of the tooth 351 opposite to the circular arc concave surface 322, the transmission pin shaft 320 is completely retracted into the combination sleeve 330, the clutch device 300 is in the disengaged state, and the driving assembly 210 and the rotating door device 240 are disengaged.

[0049] Specifically, the transmission pin shaft 320 is arranged in multiple, and the multiple transmission pin shafts 320 are arranged in central symmetry on the protection ring 310. The transmission pin shafts 320 on the protection ring 310 are uniformly distributed, and when the transmission pin shaft 320 is engaged with the combination sleeve 330, the driving combination sleeve 330 can be stably driven to rotate.

[0050] When the driving gear 350 rotates, in order to enable the transmission pin shaft 320 to be smoothly engaged with the engagement groove 331 of the combination sleeve 330, the transmission pin shaft 320 gradually decreases in size at one end thereof towards the combination sleeve 330 to form a guide portion 323. The engagement groove 331 is in a trumpet shape expanding towards the protection ring 310. The end portion of the transmission pin shaft 320 is smaller in size, and the opening side of the engagement groove 331 is larger in size, so that the transmission pin shaft 320 is more easily and smoothly clamped into the engagement groove 331. When the transmission pin shaft 320 is clamped into the engagement groove 331, the transmission pin shaft 320 and the engagement groove 331 are matched in size, and the combination sleeve 330 can be stably driven to rotate.

[0051] In some embodiments, the door opening and closing mechanism 200 comprises a translation assembly 220 and a linkage 230. The translation assembly 220 and the driving assembly 210 are arranged in one of the cabinet 110 and the door body 120. The translation assembly 220 has a rotating input 241. The linkage 230 comprises a first end 231 and a second end 232 arranged oppositely, the first end 231 of the linkage 230 is rotatably arranged in the translation assembly 220, and the second end 232 of the linkage 230 is rotatably arranged in the other one of the cabinet 110 and the door body 120 or the hinge mechanism 130 of the cabinet assembly 100.

[0052] By arranging the linkage 230, the translation assembly 220 can drive the first end 231 of the linkage 230 to move, so as to realize the swinging of the linkage 230, and the door body 120 can be synchronously forced to rotate relative to the cabinet 110. The clutch device 300 can realize the engagement or disengagement of the driving assembly 210 and the translation assembly 220. When the driving assembly 210 is engaged with the translation assembly 220, the driving assembly 210 can transmit power to the translation assembly 220, the translation assembly 220 can drive the first end 231 of the linkage 230 to move, the linkage 230 swings to drive the door body 120 to rotate relative to the cabinet 110, so as to realize the automatic opening and closing function. When the driving assembly 210 is disengaged from the translation assembly 220, the first end 231 of the linkage 230 can move freely on the translation assembly 220 during the forced rotation of the door body 120, so as to realize the manual opening and closing of the door.

[0053] By arranging the door opening and closing mechanism 200, the automatic opening and closing function can be realized, and the automatic opening and closing process is as follows: obtaining an opening instruction, the door opening and closing mechanism 200 is powered on, 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 230 to move, and the door body 120 is forced to rotate relative to the cabinet 110 to open the cabinet 110. Obtaining a closing instruction, the driving assembly 210 transmits power to the translation assembly 220, the translation assembly 220 can drive the first end 231 of the linkage 230 to move reversely, the door body 120 is forced to rotate relative to the cabinet 110 to close the cabinet 110, and after the door body 120 is closed, the clutch device 300 disengages the driving assembly 210 and the translation assembly 220.

[0054] The door opening and closing mechanism 200 also enables a power-assisted door opening and closing function during manual operation. The power-assisted door opening and closing function is as follows: When the user manually opens and closes the door, the door opening and closing mechanism 200 is energized, and 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, which in turn drives the first end 231 of the linkage rod 230 to move, thereby achieving power-assisted door opening and closing. Since the user now manually operates the door, to improve user safety, 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.

[0055] 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. On some box assemblies 100 that are provided with an adsorption structure between the box body 110 and the door body 120 or maintain internal and external negative pressure, the door opening and closing mechanism 200 can make it easier for users to open the door body 120. The door opening and closing mechanism 200 can also ensure that the door body 120 is effectively closed, thereby improving the sealing.

[0056] 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.

[0057] In some embodiments, the drive assembly 210, translation assembly 220, and clutch device 300 are disposed on the door body 120. The first end 231 of the linkage rod 230 is rotatably mounted on the translation assembly 220, while the second end 232 of the linkage rod 230 is rotatably mounted on the housing 110 or the hinge mechanism 130. The configuration of the linkage rod 230 and the hinge position of its second end 232 can be adjusted based on the trajectory of the door body 120 during opening to better apply force to the door body 120 and avoid interference. For example, the linkage rod 230 can be linear.

[0058] In yet other embodiments, the drive assembly 210, translation assembly 220, and clutch device 300 are disposed in the housing 110. The first end 231 of the linkage rod 230 is rotatably mounted on the translation assembly 220, and the second end 232 of the linkage rod 230 is rotatably mounted 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 can be adjusted based on the trajectory of the door body 120 during opening to better apply force to the door body 120 and avoid interference. For example, the linkage rod 230 can be curved.

[0059] In some embodiments, the hinge mechanism 130 is a multi-link hinge. The hinge mechanism 130 includes a cabinet fixing seat 131 provided on the cabinet 110, a door fixing seat 132 provided on the door 120, and a link assembly 133 hingedly connecting the door fixing seat 132 and the cabinet fixing seat 131. The second end 232 of the link rod 230 is rotatably arranged on the link assembly 133, so that the link rod 230 can reduce or avoid interference with the link assembly 133 during rotation of the door 120. The switch door mechanism 200 has a reasonable structure design and layout, and can be used for a cabinet assembly 100 with large-angle opening and closing of doors, and is particularly suitable for automatic opening and closing of doors of embedded household appliances and furniture.

[0060] Of course, the second end 232 of the link rod 230 can also be rotatably arranged on the cabinet fixing seat 131 or the door fixing seat 132 according to actual conditions.

[0061] Please refer to Figure 4 , Figure 4 is a perspective structural schematic view of a switch door mechanism according to an embodiment of the present application.

[0062] Specifically, the translation assembly 220 includes a lead screw 221 and a screw block 222. The lead screw 221 is rotatably arranged on the cabinet 110 or the door 120, and the lead screw 221 is a rotary input member 241. The screw block 222 is threadedly connected with the lead screw 221, and the second end 232 of the link rod 230 is rotatably arranged on the screw block 222. When the clutch device 300 engages the driving assembly 210 and the translation assembly 220, the driving assembly 210 can drive the lead screw 221 to rotate, and the screw block 222 is translated on the lead screw 221 to move the second end 232 of the link rod 230. When the clutch device 300 disengages the driving assembly 210 and the translation assembly 220, the power transmission between the driving assembly 210 and the translation assembly 220 is cut off. When the door 120 is manually opened and closed, the lead screw 221 is in a free rotation state, and the link rod 230 can drive the screw block 222 to translate on the lead screw 221.

[0063] When the translation assembly 220 is arranged on the top or bottom of the door 120, the lead screw 221 can be arranged in the width direction of the door 120. The overall structure of the switch door mechanism 200 is more compact, the layout is reasonable, and the space occupied is small. Of course, the lead screw 221 can also be arranged in other directions.

[0064] When the translation assembly 220 is arranged on the top or bottom of the cabinet 110, the lead screw 221 can be arranged in the depth direction of the cabinet 110. The translation assembly 220 can be arranged on one side of the cabinet 110 close to the hinge mechanism 130 of the corresponding door 120, thereby shortening the driving stroke of the link rod 230. The overall structure of the switch door mechanism 200 is more compact, the layout is reasonable, and the space occupied is small. Of course, the lead screw 221 can also be arranged in other directions.

[0065] Specifically, the number of heads, the tooth shape, and the length of the lead screw 221 can be designed according to actual requirements. The lead screw 221 is a non-self-locking structure. The lead screw 221 can be supported by the support sleeves 2221 arranged at both ends.

[0066] In other embodiments, the translation assembly 220 can also be other driving structures capable of translating the second end 232 of the linkage rod 230.

[0067] In some embodiments, the switch door mechanism 200 further comprises a position monitoring assembly. The position monitoring assembly comprises a sensor 251 and a trigger (not shown in the figure). The sensor 251 is arranged along the length direction of the lead screw 221. The trigger is arranged on the screw block 222. The sensor 251 senses the position of the trigger. The trigger is always in contact with the sensor 251. During the rotation of the door body 120, the trigger moves synchronously with the screw block 222. The sensor 251 senses the position change of the trigger to obtain the position of the screw block 222, and further obtain the rotation angle of the door body 120. When the sensor 251 senses that the trigger moves to a predetermined position, it indicates that the door body 120 is opened or closed to a position. The sensor 251 sends a signal to the driving assembly 210, and the driving assembly 210 stops driving.

[0068] The switch door mechanism 200 of the present application has a simple and compact structure, a reasonable layout, does not occupy the space of the cabinet assembly 100, and can be used for automatic opening and closing of a large-angle cabinet assembly 100, and is especially suitable for automatic opening and closing of an embedded cabinet assembly 100, and solves the automatic opening and closing of the door in a compact installation environment. The cabinet assembly 100 using the switch door mechanism 200 of the present application can realize the functions of automatic opening and closing of the door, manual opening and closing of the door, and power-assisted opening and closing of the door during manual operation.

[0069] It should be noted that the terms "horizontal", "vertical", and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined; the terms "parallel", "perpendicular", and the like also do not mean that the fittings must be absolutely parallel or perpendicular, but can form a certain angular deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In addition, the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like are based on the orientations or positional relationships shown in the drawings, or are the orientations or positional relationships in which the products of the present application are usually placed during use, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0070] The above merely describes the embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made according to the content of the present application specification and drawings, is also included in the patent protection scope of the present application.

Claims

1. A clutching device, characterized in that The clutch device is arranged between the driving assembly and the rotating door device to realize engagement and disengagement of the driving assembly and the rotating door device. The engagement member comprises a protective ring and at least one transmission pin shaft movably arranged in the protective ring. The combination sleeve is arranged outside the protective ring and is arranged in the rotating door device. The driving gear is arranged in the protective ring and is arranged in the driving assembly.

2. The clutching device of claim 1, wherein, When the driving assembly stops driving, the transmission pin shaft can be retracted into the protective ring.

3. A clutching device according to claim 2, characterized in that The protective ring is provided with a containing groove corresponding to the transmission pin shaft.

4. A clutching device according to claim 3, characterised in that The containing groove extends radially along the protective ring.

5. The clutching device of claim 1, wherein, The engagement member further comprises at least one elastic member corresponding to the transmission pin shaft.

6. The clutching device of claim 1, wherein, The containing groove is provided with a limiting convex edge.

7. The clutching device of claim 1, wherein, The transmission pin shaft is provided with a stepped portion at one end.

8. A door opening mechanism characterized by comprising: The driving gear is provided with at least one tooth corresponding to the transmission pin shaft. The transmission pin shaft is provided with a circular arc concave surface at one end. The transmission pin shaft is centrally symmetrically arranged on the protective ring. The transmission pin shaft is provided with a guiding portion at one end.

9. A door opening mechanism according to claim 8, characterised in that The engagement slot is trumpet-shaped. The switch door mechanism is arranged in the box assembly. The rotating door device is arranged between the box and the door body and is used to drive the door body to rotate.

10. A door opening mechanism according to claim 9, characterised in that The driving assembly is used to provide power for the rotating door device. The clutch device is arranged between the rotating door device and the driving assembly. The rotating door device comprises: The translation assembly is arranged in one of the box and the door body and is arranged in the combination sleeve. The first end of the connecting rod is rotatably arranged in the translation assembly. The second end of the connecting rod is rotatably arranged in the other of the box and the door body or the hinge mechanism of the box assembly. The translation assembly can drive the first end to move to realize swinging of the connecting rod, thereby driving the door body to rotate relative to the box. The translation assembly comprises: The screw rod is coaxially fixed with the combination sleeve. A screw block is threadedly connected with the screw rod, and the second end of the connecting rod is pivotally arranged in the screw block.

11. A door opening mechanism according to claim 10, wherein The door opening and closing mechanism further comprises a position monitoring assembly, which comprises: A sensor is arranged along the length direction of the screw rod; A trigger is arranged in the screw block, and the sensor senses the position of the trigger.

12. The door opening mechanism of claim 10, wherein The screw rod is arranged on the top, bottom or inside of the box, and extends along the depth direction of the box. Alternatively, the screw rod is arranged on the top, bottom or inside of the door, and extends along the width direction of the door.

13. A box assembly characterized by, It comprises: A box; A door for opening or closing the box; A hinge mechanism pivotally connecting the box and the door; The door opening and closing mechanism according to any one of claims 8-12 is used to drive the door to rotate relative to the box.

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