Door opening and closing mechanism and box body assembly

Abstract

The utility model discloses a door opening and closing mechanism and a box assembly. The door opening and closing mechanism is arranged on one of the refrigerator body and the door body and comprises a driving assembly and a door opening and closing assembly, the translation assembly comprises a rack and a transmission gear meshed with the rack; the first end of the linkage rod is rotationally arranged on the rack, and the second end of the linkage rod is rotationally arranged on the other one of the refrigerator body and the door body or the hinge mechanism of the refrigerator body assembly; and the clutch device is arranged between the driving assembly and the translation assembly so as to realize connection and separation of the driving assembly and the transmission gear. The translation assembly in the door opening and closing mechanism adopts the transmission gear and the rack, the structure is simpler and more compact, the number of related parts is small, the size is small, the installation adaptability is high, and the door opening and closing mechanism adopts the clutch device, so that a user can freely select a manual door opening and closing function or an automatic door opening and closing function; and the door opening and closing assisting function can be achieved, and the functions are diversified.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of intelligent household appliances, and particularly relates to a door opening and closing mechanism and a box assembly. BACKGROUND

[0002] With the development of automation and intelligence of household devices, the box and the door body of some 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.

[0003] However, the current door opening and closing mechanism has the problems of single function, complex structure and large size. CONTENT OF THE UTILITY MODEL

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

[0005] To solve the above technical problems, one technical scheme of the application is as follows: a door opening and closing mechanism is arranged on a box assembly, the box assembly comprises a box and a door body rotatably arranged on the box, the door opening and closing mechanism is arranged on one of the box and the door body, and the door opening and closing mechanism comprises: a driving assembly having a rotating output shaft; a translation assembly comprising a rack slidably arranged on one of the box and the door body and a transmission gear engaged with the rack; a connecting rod, a first end of the connecting rod being rotatably arranged on the rack, and a second end of the connecting rod being rotatably arranged on the other one of the box and the door body or a hinge mechanism of the box assembly; and a clutch device arranged between the driving assembly and the translation assembly to realize engagement and separation of the rotating output shaft and the transmission gear.

[0006] According to an embodiment of the application, the clutch device comprises a coupling sleeve, an engagement member and a driving spindle, the coupling sleeve is coaxially fixed with the transmission gear, the driving spindle is coaxially fixed with the rotating output shaft, the rotating output shaft drives the driving spindle to rotate, the engagement member can abut against the coupling sleeve to drive the coupling sleeve to rotate, and the rotating output shaft stops rotating, and the engagement member can be separated from the coupling sleeve.

[0007] According to an embodiment of the application, the engagement member comprises: a protective ring, the coupling sleeve is arranged outside the protective ring; at least one transmission pin shaft movably arranged on the protective ring, at least one engagement groove is formed on the inside of the coupling sleeve, and the engagement groove and the transmission pin shaft are arranged one by one; and at least one elastic member arranged one by one with the transmission pin shaft, the elastic member is arranged on the coupling sleeve to drive the transmission pin shaft to retract into the coupling sleeve.

[0008] According to an embodiment of the present application, the driving assembly further comprises a gear set, the gear set comprising: a driving gear coaxially fixed with the rotating output shaft; a driven gear coaxially fixed with the driving main shaft, the driving gear and the driven gear being arranged in a spaced manner along the length direction of the rack; and at least one intermediate gear arranged in meshing manner between the driving gear and the driven gear.

[0009] According to an embodiment of the present application, the protective ring is provided with at least one accommodating groove, the accommodating groove being arranged in one-to-one correspondence with the transmission pin shaft, the accommodating groove extending in a radial direction of the protective ring, a limiting protruding edge being arranged in the accommodating groove, and the transmission pin shaft being formed with a stepped portion at one end thereof facing the driving main shaft, the other end of the elastic member abutting against the stepped portion and the limiting protruding edge.

[0010] According to an embodiment of the present application, the driving main shaft is provided with at least one tooth, the tooth being arranged in one-to-one correspondence with the transmission pin shaft, the transmission pin shaft being formed with a circular-arc concave surface at one end thereof facing the driving main shaft, the tooth pushing the transmission pin shaft to extend outward along the circular-arc concave surface when the driving main shaft rotates, and the elastic member being capable of driving the transmission pin shaft to retract into the coupling sleeve when the tooth is opposite to the middle part of the circular-arc concave surface.

[0011] According to an embodiment of the present application, a plurality of transmission pin shafts are arranged in a central symmetrical manner in the protective ring.

[0012] 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 a trumpet shape expanding towards the protective ring.

[0013] According to an embodiment of the present application, the door opening and closing mechanism further comprises a position monitoring assembly, the position monitoring assembly comprising: a sensor arranged in a length direction of the translation assembly; and a triggering member arranged in the rack, the sensor sensing the position of the triggering member.

[0014] According to an embodiment of the present application, the rack is arranged at a top, a bottom or an interior of the box body, and the rack extends in a depth direction of the box body; or the rack is arranged at a top, a bottom or an interior of the door body, and the rack extends in a width direction of the door body.

[0015] To solve the above technical problems, another technical solution adopted by the present application is: 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.

[0016] The beneficial effects of the present application are: the translation assembly of the present application adopts a rack and a transmission gear for transmission, and the structure is compact. Under the same driving stroke, the gear and the transmission gear can effectively shorten the length direction size of the translation assembly. The translation assembly has simple and compact structure, small volume, and the overall volume of the door opening and closing mechanism is more compact, does not occupy the space of the box assembly, and is particularly suitable for installation in the box. In addition, the clutch device is adopted in the door opening and closing mechanism of the present application, the engagement and separation of the driving assembly and the translation assembly can be realized, the user can freely select manual door opening and closing or use automatic door opening and closing function, and the power-assisted door opening and closing function can also be realized, and the functions are diversified. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used 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 also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 is a perspective structural schematic view of a box assembly of an embodiment of the present application, wherein the box assembly is in a closed state, and the door opening and closing mechanism is arranged on the door body;

[0019] Figure 2 is a top view schematic view of a box assembly of an embodiment of the present application, wherein the box assembly is in a closed state, and the door opening and closing mechanism is arranged on the box;

[0020] Figure 3 is a top view schematic view of a box assembly of an embodiment of the present application, wherein the box assembly is in an open state, and the door opening and closing mechanism is arranged on the box;

[0021] Figure 4 is a perspective structural schematic view of a door opening and closing mechanism of an embodiment of the present application;

[0022] Figure 5 is a perspective structural schematic view of another view of a door opening and closing mechanism of an embodiment of the present application;

[0023] Figure 6 is a cross-sectional structural schematic view of a clutch device of an embodiment of the present application, at this time, the clutch device is in a separated state;

[0024] Figure 7 is an exploded structural schematic view of a clutch device of an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to make the above objectives, characteristics and advantages of the present application more apparent, more comprehensible, 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 convenience 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 fall within the scope of protection of the present application.

[0026] Reference herein to "embodiments" means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] With the development of home equipment automation and intelligence, the existing part of the box body and the door body of the household equipment are realized by the automatic opening and closing door device.

[0028] Please refer to Figure 1 , Figure 1 is a schematic diagram of the box body assembly in a closed state, and the opening and closing door mechanism is arranged on the door body.

[0029] An embodiment of the present application provides a box body assembly 100. The box body 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 body 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.

[0030] The box body assembly 100 in the present application can be a refrigerator, a beverage cabinet or other refrigeration equipment, or the box body assembly 100 can also be a dishwasher, a washing machine, a dryer or other cleaning equipment, or the box body assembly 100 can also be a cabinet or other furniture. Of course, the box body assembly 100 can also be other equipment with a box door structure, which is not listed here.

[0031] The opening and closing door mechanism 200 in the present application can be used on the box body assembly 100 with one or more door bodies 120. The opening and closing door mechanism 200 can be installed individually or in combination on the box body assembly 100.

[0032] 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.

[0033] Please continue to refer to Figures 2 to 4 , Figure 2 is a top view of a cabinet assembly in a closed state according to an embodiment of the present application, wherein the switch door mechanism is arranged on the cabinet; Figure 3 is a top view of a cabinet assembly in an open state according to an embodiment of the present application, wherein the switch door mechanism is arranged on the cabinet; Figure 4 is a schematic diagram of the overall structure of a switch door mechanism according to an embodiment of the present application.

[0034] The following will be described in detail in combination with an embodiment of the switch door mechanism 200:

[0035] An embodiment of the present application provides a switch door mechanism 200, which comprises a driving assembly 210, a translation assembly 220, a linkage rod 230 and a clutch device 300. The driving assembly 210 has a rotating output shaft 211 (see Figure 5 ). The translation assembly 220 and the driving assembly 210 are arranged on one of the cabinet 110 and the door body 120. The translation assembly 220 comprises a rack 221 slidingly arranged on one of the cabinet 110 and the door body 120, and a transmission gear 222 engaged with the rack 221. The linkage rod 230 comprises a first end 231 and a second end 232 arranged oppositely, the first end 231 of the linkage rod 230 is rotatably arranged on the rack 221, and the second end 232 of the linkage rod 230 is rotatably arranged on the other one of the cabinet 110 and the door body 120, or rotatably arranged on the hinge mechanism 130 of the cabinet assembly 100. By arranging the linkage rod 230, the movement of the first end 231 of the linkage rod 230 driven by the translation assembly 220 can realize the swing of the linkage rod 230, and the door body 120 is synchronously forced to rotate relative to the cabinet 110.

[0036] The clutch device 300 is arranged between the driving assembly 210 and the translation assembly 220, and is used to engage or separate the driving assembly 210 and the translation assembly 220, i.e. to realize the engagement and separation 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, the transmission gear 222 rotates to drive the rack 221 engaged therewith to translate, the rack 221 can drive the first end 231 of the connecting rod 230 to move, the connecting rod 230 swings to drive the door body 120 to rotate relative to the cabinet 110, and the automatic opening and closing door function is realized. 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. During the process that the door body 120 is rotated under force, the connecting rod 230 can drive the rack 221 to move, and the manual opening and closing door function is realized. By arranging the opening and closing door mechanism 200, the user can freely select the manual opening and closing door function or use the automatic opening and closing door function, and the power-assisted opening and closing door function can also be realized, and the opening and closing door mechanism 200 is diversified in function.

[0037] In addition, the translation assembly 220 of the present application adopts the rack 221 and the transmission gear 222 for transmission, and the structure of the rack 221 and the transmission gear 222 is compact. Under the same driving stroke, the length of the translation assembly 220 in the length direction can be effectively shortened, the structure of the translation assembly 220 is simple and compact, the volume is small, the overall volume of the opening and closing door mechanism 200 is more compact, the space of the cabinet assembly 100 is not occupied, and it is particularly suitable for installation in the cabinet 110.

[0038] The opening and closing door mechanism 200 of the present application has a compact overall structure, reliable transmission, and strong adaptability, and can realize large-angle opening and closing of the door under limited size.

[0039] By arranging the opening and closing door mechanism 200, the automatic opening and closing door function can be realized, and the automatic opening and closing door process is as follows: obtaining an opening door instruction, the opening and closing door 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 connecting rod 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 door instruction, the driving assembly 210 transmits power to the translation assembly 220, the translation assembly 220 can drive the first end 231 of the connecting rod 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 separates the driving assembly 210 from the translation assembly 220.

[0040] By setting the switch door mechanism 200, the power-assisted switch door function during manual operation can also be realized, and the power-assisted switch door function is as follows: when the user manually operates the switch door, the switch door 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, and the translation assembly 220 can drive the first end 231 of the linkage rod 230 to move, thereby realizing power-assisted switch door. Since the user adds manual operation at this time, in order to improve the safety of use, if there is abnormal resistance due to manual operation or other obstacles during the power-assisted switch door process, the driving assembly 210 stops driving, the clutch device 300 separates the driving assembly 210 and the translation assembly 220, and the door body 120 stops automatic rotation.

[0041] The switch door mechanism 200 of the present application can realize automatic switch door function and power-assisted switch door function during manual operation, realize automation and intelligentization, and on some box body 110 and door body 120, the switch door mechanism 200 can make the user open the door body 120 more labor-saving, and the switch door mechanism 200 can also ensure that the door body 120 is effectively closed, thereby improving the sealing performance.

[0042] Since the switch door mechanism 200 has the clutch device 300, in the case of power failure, the clutch device 300 can make the driving assembly 210 and the translation assembly 220 in a separated state, the first end 231 of the linkage rod 230 can move on the translation assembly 220 with the rotation of the door body 120, and the user can freely open or close the door body 120.

[0043] When the translation assembly 220 is arranged at the top or bottom of the door body 120, the rack 221 can be arranged in the width direction of the door body 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 rack 221 can also be arranged in other directions.

[0044] When the translation assembly 220 is arranged at the top or bottom of the box body 110, the rack 221 can be arranged in the depth direction of the box body 110. The translation assembly 220 can be arranged on one side of the box body 110 close to the corresponding door body 120 hinge mechanism 130, thereby shortening the driving stroke of the linkage rod 230, and the overall structure of the switch door mechanism 200 is more compact, and the space occupied is small. Of course, the rack 221 can also be arranged in other directions.

[0045] In other embodiments, the translation assembly 220 can also be other driving structures that can drive the second end 232 of the linkage rod 230 to translate.

[0046] In some embodiments, the driving assembly 210, the translation assembly 220 and the clutch device 300 are arranged in the door body 120, the first end 231 of the linkage rod 230 is rotatably arranged in the translation assembly 220, and the second end 232 of the linkage rod 230 is rotatably arranged in the cabinet 110 or the hinge mechanism 130. The configuration of the linkage rod 230 and the hinged position of the second end 232 thereof can be adjusted according to the trajectory in the opening process of the door body 120, so as to better apply force to the door body 120 and avoid interference. For example, the linkage rod 230 can be linear.

[0047] In yet some embodiments, the driving assembly 210, the translation assembly 220 and the clutch device 300 are arranged in the cabinet 110, the first end 231 of the linkage rod 230 is rotatably arranged in the translation assembly 220, and the second end 232 of the linkage rod 230 is rotatably arranged in the door body 120 or the hinge mechanism 130. The configuration of the linkage rod 230 and the hinged position of the second end 232 thereof can be adjusted according to the trajectory in the opening process of the door body 120, so as to better apply force to the door body 120 and avoid interference. For example, the linkage rod 230 can be arc-shaped.

[0048] In some embodiments, the hinge mechanism 130 is a multi-link hinge. The hinge mechanism 130 includes a cabinet fixing seat 131 arranged in the cabinet 110, a door body fixing seat 132 arranged in the door body 120, and a linkage assembly 133 hingedly connecting the door body fixing seat 132 and the cabinet fixing seat 131. The second end 232 of the linkage rod 230 can be rotatably arranged in the linkage assembly 133, so that the linkage rod 230 can reduce or avoid interference with the linkage assembly 133 during the rotation of the door body 120. The structure design and layout of the door opening and closing mechanism 200 are reasonable, and the cabinet assembly 100 can be used for large-angle door opening and closing, and is especially suitable for automatic door opening and closing of embedded household appliances and furniture products.

[0049] Of course, the second end 232 of the linkage rod 230 can also be rotatably arranged in the cabinet fixing seat 131 or the door body fixing seat 132 according to actual conditions.

[0050] Please continue to refer to Figure 5 , Figure 5 is another perspective view of the door opening and closing mechanism according to an embodiment of the present application.

[0051] In some embodiments, the driving assembly 210 further comprises a gear set 212, which comprises a driving gear 213, a driven gear 214 and at least one intermediate gear 215. The driving gear 213 is coaxially fixed with the rotating output shaft 211. The driven gear 214 is coaxially fixed with 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 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 arranging 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.

[0052] By arranging the gear set 212, the driving assembly 210 can be arranged along the length direction of the translation assembly 220, thereby compressing the size of the switch door mechanism 200, and making the overall mechanism of the switch door mechanism 200 more compact and reasonable in layout. Of course, in other embodiments, the rotating output shaft 211 of the driving assembly 210 can be directly coaxially fixed with the driving main shaft 350 of the clutch device 300.

[0053] The number of the intermediate gears 215 can be determined according to the size and interval of the driving gear 213 and the driven gear 214. Arranging the intermediate gears 215 can reduce the diameter of the driving gear 213 and the driven gear 214, thereby compressing the size of the switch door mechanism 200 in the height direction. When the driving gear 213 and the driven gear 214 can be directly engaged, the intermediate gears can not be arranged.

[0054] Please continue to refer to Figure 6 and Figure 7 , Figure 6 is a cross-sectional structure schematic diagram of the clutch device of an embodiment of the present application, at this time, the clutch device is in a separated state; Figure 7 is an exploded structure schematic diagram of the clutch device of an embodiment of the present application.

[0055] The clutch device 300 comprises a coupling sleeve 330, an engaging member 301 and a driving main shaft 350. The coupling sleeve 330 is coaxially fixed with the transmission gear 222. The driving main shaft 350 is coaxially fixed with the rotating output shaft 211. When it is needed to realize automatic opening and closing of the door, the rotating output shaft 211 drives the driving main shaft 350 to rotate, which can make the engaging member 301 abut against the coupling sleeve 330 to drive the coupling sleeve 330 to rotate. The coupling sleeve 330 drives the transmission gear 222 to rotate, and the rack 221 moves, thereby driving the door body 120 to rotate to open or close through the linkage rod 230. The rotating output shaft 211 stops rotating, and the engaging member 301 can be separated from the coupling sleeve 330.

[0056] Further, the engagement member 301 comprises a protective ring 310, at least one transmission pin shaft 320, a coupling sleeve 330 and at least one elastic member 340. The transmission pin shaft 320 is arranged radially movably on the protective ring 310, and 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 transmission gear 222. The driving main shaft 350 is located inside the protective ring 310. The inside of the coupling sleeve 330 is formed with at least one meshing groove 331, and the meshing groove 331 is arranged one-to-one with the transmission pin shaft 320. The elastic member 340 is arranged one-to-one with the transmission pin shaft 320 and is arranged in the coupling sleeve 330. When the driving main shaft 350 does not rotate, the elastic member 340 drives the transmission pin shaft 320 to retract into the protective ring 310, and the clutch device 300 is in a separated 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, the transmission pin shaft 320 extends and is clamped into the meshing groove 331, each transmission pin shaft 320 is in meshing state with the coupling sleeve 330, and the protective ring 310 can be driven to rotate synchronously, and the clutch device 300 is in an engaged state. The clutch device 300 in the door opening and closing mechanism 200 of the present application is driven by meshing, and the engagement of the driving assembly 210 and the translation assembly 220 is more stable.

[0057] 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, the engagement of the driving assembly 210 and the translation assembly 220 can be realized, the driving assembly 210 stops outputting rotation, and the separation of the driving assembly 210 and the translation assembly 220 can be realized, without the cooperation of additional electric control systems and driving devices, the structure is simple and compact, the number of related parts is small, the overall volume is small, the transmission is reliable, and the installation adaptability is strong.

[0058] In some embodiments, the protective ring 310 is provided with at least one accommodating groove 311, and the accommodating groove 311 is arranged one-to-one with the transmission pin shaft 320. The accommodating groove 311 extends radially along the protective ring 310, the transmission pin shaft 320 can move radially along the protective ring 310, and the arrangement of the protective ring 310 can ensure the synchronous rotation of each transmission pin shaft 320. The accommodating groove 311 is provided with a limiting convex edge 312, one end of the transmission pin shaft 320 is formed with a stepped portion 321, one end of the elastic member 340 abuts against the stepped portion 321, and the other end abuts against the limiting convex 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 main shaft 350 rotates, the driving main shaft 350 pushes the transmission pin shaft 320 to extend outward, the elastic member 340 is further compressed, and the transmission pin shaft 320 extends out of the accommodating groove 311 and into the meshing groove 331.

[0059] Specifically, the limiting protruding edge 312 is located at the opening of the accommodation groove 311 on the side of the coupling sleeve 330.

[0060] In some embodiments, the driving spindle 350 has at least one tooth 351, which is arranged in one-to-one correspondence 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 spindle 350. When the driving spindle 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 directly opposite 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 coupling sleeve 330.

[0061] Therefore, when the driving assembly 210 is powered on, the driving spindle 350 rotates, and 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 coupling sleeve 330, the tooth 351 abuts against the circular arc concave surface 322 of the transmission pin shaft 320, and the tooth 351 drives the transmission pin shaft 320 to rotate synchronously. The coupling 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 translation assembly 220 are engaged. When the door body 120 is opened or closed to the position, the driving assembly 210 is powered off, the driving spindle 350 stops rotating, and the elastic force of the elastic member 340 drives the transmission pin shaft 320 to move into the coupling sleeve 330. The circular arc concave surface 322 pushes the transmission pin shaft 320 to rotate to the position where the tooth 351 is directly opposite the middle part of the circular arc concave surface 322. The transmission pin shaft 320 is completely retracted into the coupling sleeve 330, the clutch device 300 is in the disengaged state, and the driving assembly 210 and the translation assembly 220 are disengaged.

[0062] Specifically, the transmission pin shaft 320 is arranged in plurality, and the plurality of transmission pin shafts 320 are arranged in central symmetry on the protective ring 310. The transmission pin shafts 320 on the protective ring 310 are uniformly distributed, and when the transmission pin shaft 320 is engaged with the coupling sleeve 330, the driving of the coupling sleeve 330 can be stabilized.

[0063] When the driving spindle 350 rotates, in order to enable the transmission pin shaft 320 to be smoothly engaged with the engagement groove 331 of the coupling sleeve 330, the size of the end of the transmission pin shaft 320 towards the coupling sleeve 330 gradually decreases to form a guide portion 323. The engagement groove 331 is in the shape of a trumpet that expands towards the protective ring 310. The size of the end of the transmission pin shaft 320 is smaller, and the size of the opening side of the engagement groove 331 is larger, so that the transmission pin shaft 320 is more easily and smoothly engaged into the engagement groove 331. When the transmission pin shaft 320 is engaged into the engagement groove 331, the size of the transmission pin shaft 320 matches that of the engagement groove 331, and the driving of the coupling sleeve 330 can be stabilized.

[0064] Specifically, the clutch device 300 further comprises a limiting seat 360 fixed to the corresponding box body 110 or door body 120, and the protective ring 310 is rotatably arranged in the limiting seat 360. The protective ring 310 is provided with an annular groove 313, and the inner wall of the limiting seat 360 is correspondingly provided with a pressing block 361 embedded in the annular groove 313. The protective ring 310 is rotatably arranged in the limiting seat 360 through the pressing block 361 arranged in the annular groove 313. The pressing block 361 can be fixed to the limiting seat 360 by a fastener.

[0065] The pressing block 361 can apply a predetermined pressure to the protective ring 310. When the driving main shaft 350 starts to drive the protective ring 310 to rotate, there is a friction force between the pressing block 361 and the contact surface of the protective ring 310, which can hinder the rotation of the protective ring 310, so that the starting rotation speed of the protective ring 310 increases slowly. The transmission pin shaft 320 has sufficient time to extend out of the protective ring 310 and be clamped into the meshing groove 331 when aligning the meshing groove 331, so that the engagement member 301 and the combination sleeve 330 can be efficiently and accurately engaged, thereby improving the engagement efficiency of the engagement member 301 and the combination sleeve 330 of the clutch device 300.

[0066] It should be further noted that after the protective ring 310 starts to rotate normally, the friction force between the pressing block 361 and the protective ring 310 is converted into stable sliding friction force, the sliding friction force to be overcome is small, and the pressure applied by the pressing block 361 to the protective ring 310 will not affect the normal rotation of the protective ring 310. The predetermined pressure applied by the pressing block 361 to the protective ring 310 can be adjusted according to actual conditions, which can improve the docking efficiency of the transmission pin shaft 320 clamped into the combination sleeve 330 without affecting the load of the driving main shaft 350.

[0067] In some embodiments, the door opening and closing mechanism 200 further comprises a position monitoring assembly. The position monitoring assembly comprises a sensor 251 and a trigger 252. The sensor 251 is arranged along the length direction of the translation assembly 220 and is fixed to the corresponding box body 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 can obtain the position of the rack 221 by sensing the position change of the trigger 252, and then obtain the rotation angle of the door body 120. When the sensor 251 senses that the trigger 252 moves to a predetermined position, it indicates that the door body 120 is opened or closed to a position, and the sensor 251 sends a signal to the driving assembly 210 to stop driving.

[0068] The switch door mechanism 200 of the present application is simple and compact in structure, reasonable in layout, does not occupy the space of the cabinet assembly 100, can be used for automatic opening and closing of the door of the cabinet assembly 100 with a large angle, and is especially suitable for automatic opening and closing of the door of the 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 when manually operated.

[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 relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In addition, 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 indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is 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 description is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A door opening mechanism, characterized by, The application relates to a switch door mechanism for a cabinet assembly, wherein the cabinet assembly comprises a cabinet and a door body rotatably arranged on the cabinet, the switch door mechanism is arranged on one of the cabinet and the door body, and the switch door mechanism comprises: a driving assembly having a rotating output shaft; a translation assembly comprising a rack slidably arranged on one of the cabinet and the door body, and a transmission gear engaged with the rack; a connecting rod, a first end of the connecting rod being rotatably arranged on the rack, and a second end of the connecting rod being rotatably arranged on the other one of the cabinet and the door body or a hinge mechanism of the cabinet assembly; a clutch device arranged between the driving assembly and the translation assembly to realize engagement and separation of the rotating output shaft and the transmission gear.

2. The door opening mechanism according to claim 1, characterized in that The clutch device comprises a coupling sleeve coaxially fixed with the transmission gear, a driving main shaft coaxially fixed with the rotating output shaft, and an engaging member, wherein the rotating output shaft drives the driving main shaft to rotate, the engaging member can abut against the coupling sleeve to drive the coupling sleeve to rotate, the rotating output shaft stops rotating, and the engaging member can be separated from the coupling sleeve.

3. A door opening mechanism according to claim 2, characterised in that The engaging member comprises: a protective ring, the coupling sleeve being arranged outside the protective ring; at least one transmission pin shaft movably arranged on the protective ring, at least one engagement groove being formed on the inside of the coupling sleeve, and the engagement groove being arranged in one-to-one correspondence with the transmission pin shaft; at least one elastic member arranged on the coupling sleeve in one-to-one correspondence with the transmission pin shaft to drive the transmission pin shaft to retract into the coupling sleeve.

4. The door opening mechanism of claim 2, wherein The driving assembly further comprises a gear set, and the gear set comprises: a driving gear coaxially fixed with the rotating output shaft; a driven gear coaxially fixed with the driving main shaft, the driving gear and the driven gear being arranged in a spaced manner along the length direction of the rack; at least one intermediate gear engaged between the driving gear and the driven gear.

5. The door opening mechanism of claim 3, wherein The protective ring is provided with at least one accommodating groove arranged in one-to-one correspondence with the transmission pin shaft, the accommodating groove extends in a radial direction of the protective ring, a limiting protrusion is arranged in the accommodating groove, one end of the transmission pin shaft is formed with a stepped portion, and one end of the elastic member abuts against the stepped portion and the other end abuts against the limiting protrusion.

6. The door opening mechanism of claim 3, wherein The driving main shaft is provided with at least one tooth arranged in one-to-one correspondence with the transmission pin shaft, one end of the transmission pin shaft is formed with a circular arc concave surface, and when the tooth is opposite to the middle part of the circular arc concave surface, the elastic member can drive the transmission pin shaft to retract into the coupling sleeve.

7. The door opening mechanism of claim 3, wherein A plurality of transmission pin shafts are arranged in a central symmetrical manner on the protective ring.

8. The door opening mechanism of claim 3, wherein One end of the transmission pin shaft towards the coupling sleeve is gradually reduced in size to form a guide portion, and the engagement groove is in a trumpet shape expanding towards the protective ring.

9. The door opening mechanism of claim 1, wherein The switch door mechanism further comprises a position monitoring assembly, and the position monitoring assembly comprises: a sensor arranged in a length direction of the translation assembly. A trigger is arranged on the rack, and the sensor senses the position of the trigger.

10. The door opening mechanism of claim 1, wherein The rack is arranged on the top, bottom or inside of the box, and extends along the depth direction of the box; or the rack is arranged on the top, bottom or inside of the door, and extends along the width direction of the door.

11. A box assembly characterized by, The switch door mechanism comprises: a box; a door for opening or closing the box; a hinge mechanism pivotally connecting the box and the door; The switch door mechanism according to any one of claims 1-10 is used to drive the door to rotate relative to the box.

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