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 rotating door device so as to achieve connection and separation of the driving assembly and the rotating door device, and the clutch device comprises a connection component, a clutch assembly, a driving assembly and a rotating door device, and the connection component comprises a holder and at least one magnetic piece which can be attracted to the holder; the combination sleeve is used for being in butt joint with the revolving door device, the combination sleeve is arranged outside the retainer in a sleeving mode, and at least one meshing groove matched with the magnetic piece is formed in the inner side of the combination sleeve; the driving cam is located between the combination sleeve and the retainer and used for being in butt joint with the driving assembly; the driving cam rotates to push part of the magnetic piece into the meshing groove, and the magnetic piece continues to be pushed to drive the combination sleeve to rotate synchronously; and the driving assembly stops driving, and the magnetic piece can be attracted by the retainer and retreats from the meshing groove. 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 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 currently has the problems of complex structure and large size. CONTENT OF THE UTILITY MODEL

[0004] The present 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 solution adopted by the present application is a clutch device 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 retainer and at least one magnetic piece, the magnetic piece being adsorbable to the retainer; a combination sleeve for being connected to the rotating door device, the combination sleeve being sleeved outside the retainer, and at least one meshing groove matched with the magnetic piece being formed on the inner side of the combination sleeve; and a driving cam located between the combination sleeve and the retainer and being connected to the driving assembly, the driving cam being rotatable to push the magnetic piece partially into the meshing groove, and the combination sleeve being driven to rotate synchronously by continuously pushing the magnetic piece, and the magnetic piece being adsorbed by the retainer and being withdrawn from the meshing groove when the driving assembly stops driving.

[0006] According to an embodiment of the present application, the driving cam has at least one gear tooth, and the distance between the end of the gear tooth away from the rotation axis and the inner wall of the combination sleeve is smaller than the maximum length of the part of the magnetic piece located outside the meshing groove after the magnetic piece is clamped into the meshing groove, so that the driving cam can drive the combination sleeve to rotate synchronously by pushing the magnetic piece.

[0007] According to an embodiment of the present application, the outer side surface of each gear tooth is an outward convex arc surface in the radial direction of the driving cam.

[0008] According to an embodiment of the present application, the magnetic member can be provided with at least two, the engaging groove is provided with at least two, the gear tooth is provided with at least two correspondingly, so as to push the corresponding magnetic member into the engaging groove.

[0009] According to an embodiment of the present application, the magnetic member is spherical, the radius of the engaging groove is equal to the radius of the magnetic member, and the depth of the engaging groove is less than or equal to the radius of the magnetic member.

[0010] According to an embodiment of the present application, the combination sleeve comprises: a first shaft sleeve for interfacing with the rotating door device; a combination plate provided outside the retaining frame, the inside of the combination plate being provided with the engaging groove; and a connecting plate connecting the first shaft sleeve and the combination plate, the connecting plate and the retaining frame being oppositely spaced, and the magnetic member being located between the connecting plate and the retaining frame.

[0011] According to an embodiment of the present application, the retaining frame comprises: a second shaft sleeve for interfacing with the driving assembly; and a retaining plate connected to the second shaft sleeve and located inside the combination plate, the retaining plate being made of magnetically conductive material, the retaining plate and the combination sleeve being oppositely spaced, and the magnetic member being located between the combination sleeve and the retaining plate.

[0012] According to an embodiment of the present application, the outer diameter of the retaining plate is less than the inner diameter of the combination sleeve, so that when the retaining plate adsorbs the magnetic member, the magnetic member is separated from the combination sleeve.

[0013] 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, the clutch device adopting the above clutch device.

[0014] According to an embodiment of the present application, the rotating door device comprises: a translation assembly, the translation assembly and the driving assembly being arranged in one of the box and the door body, the translation assembly being used for interfacing with the combination 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 the swing of the linkage rod, thereby driving the door body to rotate relative to the box.

[0015] According to an embodiment of the present application, the translation assembly comprises a screw rod rotationally arranged on the cabinet or the door body, the screw rod is coaxially fixed with the coupling sleeve; a screw block is threadedly connected with the screw rod, and the second end of the connecting rod is rotationally arranged on the screw block.

[0016] According to an embodiment of the present application, the screw rod is arranged on the top, bottom or inside of the cabinet, and extends along the depth direction of the cabinet; 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 cabinet assembly comprising: a cabinet; a door body for opening or closing the cabinet; a hinge mechanism pivotally connecting the cabinet and the door body; and a door opening and closing mechanism as described above for driving the door body to rotate relative to the cabinet.

[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 additional electric control systems and driving devices, 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 as follows. 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 view of a cabinet assembly according to an embodiment of the present application, wherein the cabinet assembly is in a closed state;

[0021] Figure 2 is a perspective structural schematic view of a cabinet assembly according to an embodiment of the present application, wherein the cabinet assembly is in an open state;

[0022] Figure 3 is a top view structural schematic view of a cabinet assembly according to another embodiment of the present application, wherein the cabinet assembly is in a closed state;

[0023] Figure 4 is a top view structural schematic view of a cabinet assembly according to another embodiment of the present application, wherein the cabinet assembly is in an open state;

[0024] Figure 5 is a perspective view of a door opening and closing mechanism according to an embodiment of the present application;

[0025] Figure 6 is an exploded view of a clutch device according to an embodiment of the present application;

[0026] Figure 7 is a sectional view of the clutch device according to an embodiment of the present application;

[0027] Figure 8 is another sectional view of the clutch device according to an embodiment of the present application;

[0028] Figure 9 is a partial sectional view of the door opening and closing mechanism according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are intended for explanation only and are not to be limiting on the present application. In addition, it is to be noted that only the parts related to the present application are shown in the accompanying drawings for the purpose of description. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without making any creative effort fall within the scope of the present application.

[0030] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase that the phrase in various places in the specification are not necessarily all referring to the same embodiment, or are necessarily referring to some particular embodiment, or are mutually exclusive in reference to some alternative embodiment. It is explicitly contemplated that embodiments described herein can be combined with each other.

[0031] With the development of automation and intelligence of household devices, the existing automatic door opening and closing devices are used to automatically open and close the door body on the box body of some household devices.

[0032] Please refer to Figure 1 and Figure 2 , Figure 1 is a perspective view of a box assembly according to an embodiment of the present application, wherein the box assembly is in a closed state; Figure 2 is a perspective view of the box assembly according to an embodiment of the present application, wherein the box assembly is in an open state.

[0033] An embodiment of the present application provides a cabinet assembly 100. The cabinet assembly 100 comprises a cabinet 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 cabinet 110. The hinge mechanism 130 pivotally connects the cabinet 110 and the door 120. The door opening and closing mechanism 200 is arranged on the cabinet 110 and the door 120 and is used to drive the door 120 to rotate relative to the cabinet 110. The cabinet assembly 100 of the present application can realize the functions of automatic door opening and closing, manual door opening and closing and power-assisted door opening and closing when manually operated.

[0034] 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 are not listed here.

[0035] The door opening and closing mechanism 200 in the present application can be used on the cabinet assembly 100 with one or more doors 120. The door opening and closing mechanism 200 can be installed singly or in combination on the cabinet assembly 100.

[0036] The door opening and closing mechanism 200 in the present application can be installed on the top, bottom or inside of the cabinet 110, or can be installed on the top, bottom or inside of the door 120.

[0037] Please continue to refer to Figures 3 to 5 , Figure 3 is a top view structural schematic diagram of a cabinet assembly of another embodiment of the present application, wherein the cabinet assembly is in a closed state; Figure 4 is a top view structural schematic diagram of a cabinet assembly of another embodiment of the present application, wherein the cabinet assembly is in an open state; Figure 5 is a three-dimensional structural schematic diagram of a door opening and closing mechanism of an embodiment of the present application.

[0038] The following will be specifically described in combination with an embodiment of the door opening and closing mechanism 200:

[0039] An embodiment of the present application provides a door opening and closing mechanism 200, which comprises a driving assembly 210, a door rotating device 240 and a clutch device 300. The driving assembly 210 has a rotating output shaft 211 (see Figure 7). The door turning device 240 is arranged between the cabinet 110 and the door body 120, and is used to drive the door body 120 to turn. The door turning device 240 has a rotating input member 241. The clutch device 300 is arranged between the driving assembly 210 and the door turning 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 door turning device 240, so as to realize 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 assembly 210 and the door turning device 240 can be cut off, and the user can manually operate the door body 120 to freely turn.

[0040] Please continue to refer to Figures 6 to 8 , Figure 6 is an exploded structural schematic view of the clutch device of an embodiment of the present application; Figure 7 is a sectional structural schematic view of the clutch device of an embodiment of the present application; Figure 8 is a sectional structural schematic view of the clutch device of an embodiment of the present application from another perspective.

[0041] The clutch device 300 includes an engaging member 301, a combination sleeve 330, and a driving cam 350. The combination sleeve 330 is used to be in butt joint with the door turning device 240, and specifically can be used to be coaxially and oppositely fixed with the rotating input member 241. The driving cam 350 is used to be in butt joint with the driving assembly 210, and specifically can be used to be coaxially and oppositely fixed with the rotating output shaft 211. The driving assembly 210 drives the driving cam 350 to turn, so that the engaging member 301 is in butt joint with the combination sleeve 330, and then the power is transmitted to the rotating input member 241, and the clutch device 300 is in an engaged state. The driving assembly 210 stops driving the driving cam 350 to turn, the engaging member 301 is separated from the combination sleeve 330, and the clutch device 300 is in a separated state, and the door turning device 240 is not controlled by the driving assembly 210.

[0042] The engaging member 301 comprises a holder 310 and at least one magnetic piece 320. The magnetic piece 320 can be adsorbed to the holder 310, and the holder 310 supports and limits the magnetic piece 320. A combination sleeve 330 is sleeved outside the holder 310 and is coaxially fixed with the rotating input piece 241. At least one engaging groove 331 is formed on the inner side of the combination sleeve 330, and the engaging groove 331 is used for clamping the magnetic piece 320. A driving cam 350 is coaxially fixed with the rotating output shaft 211, and the driving cam 350 is located between the combination sleeve 330 and the holder 310. When the driving cam 350 rotates, the driving cam 350 rotates to push the magnetic piece 320 to be partially clamped into the engaging groove 331, the driving cam 350 abuts against the part of the magnetic piece 320 located outside the combination sleeve 330, and the driving cam 350 drives the combination sleeve 330 to rotate synchronously by continuously pushing the magnetic piece 320. At this time, the driving cam 350, the magnetic piece 320 and the combination sleeve 330 can rotate synchronously, and the clutch device 300 is in the engaged state. When the driving cam 350 does not rotate, the magnetic piece 320 can be attracted out of the engaging groove 331 by the holder 310, and the clutch device 300 is in the separated state.

[0043] The clutch device 300 in the door opening and closing mechanism 200 of the application adopts a pure mechanical structure. The output rotation of the driving assembly 210 can realize the engagement of the driving assembly 210 and the rotating door device 240, and the stop of the output rotation of the driving assembly 210 can realize the separation of the driving assembly 210 and the rotating door device 240. Therefore, the cooperation of the additional electric control system and the driving device is not needed, 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 application realizes the driving through engagement, and the engagement of the driving assembly 210 and the rotating door device 240 is more stable.

[0044] It should be noted that when the door body 120 reaches the position state, the driving assembly 210 will rotate by a certain angle to realize the separation of the driving cam, the magnetic piece 320 and the combination sleeve 330, so as to ensure the smooth work of the next door opening and closing mechanism 200 and the manual operation of the user.

[0045] In some embodiments, the driving cam 350 has at least one tooth 351. The maximum outer diameter of the driving cam 350 is equal to or slightly smaller than the inner diameter of the combination sleeve 330. Specifically, the distance between the end of the tooth 351 away from the rotation axis and the inner wall of the combination sleeve 330 is smaller than the maximum length of the part of the magnetic piece 320 located outside the engaging groove 331 after being clamped into the engaging groove 331. Therefore, when the driving cam 350 rotates, the tooth 351 can push the magnetic piece 320 into the engaging groove 331, and the tooth 351 can abut against the magnetic piece 320. The driving cam 350 can drive the combination sleeve 330 to rotate synchronously by pushing the magnetic piece 320.

[0046] When the driving cam 350 is driven to rotate, the driving cam 350 pushes the magnetic member 320 to rotate, and the magnetic member 320 moves outward under the action of centrifugal force and is clamped into the meshing groove 331. Further, in order to facilitate the clamping of the magnetic member 320 into the meshing groove 331, the outer side surface of each tooth 351 is outwardly convex in the radial direction of the driving cam 350. Because the outer side surface of the tooth 351 is outwardly convex, when the tooth 351 rotates to the position where the arc surface contacts the magnetic member 320, the radial direction of the pushing force between the tooth 351 and the magnetic member 320 has an outward separation, and the tooth 351 can smoothly push the magnetic member 320 into the meshing groove 331. In addition, when the tooth 351 continues to rotate, the arc surface of the tooth 351 has a component force on the magnetic member 320 to make the magnetic member 320 tightly clamp into the meshing groove 331.

[0047] It should be noted that because the driving direction of the driving assembly 210 driving the rotating door device 240 to open and close the door is opposite, the tooth 351 can push the magnetic member 320 into the meshing groove 331 in both forward and reverse directions, thereby achieving the opening and closing functions.

[0048] In some embodiments, in order to improve the engagement effect of the engagement member 301 and the combination sleeve 330, the magnetic member 320 can be provided with at least two, the meshing groove 331 is provided with at least two, and the tooth 351 is provided with at least two corresponding to push the magnetic member 320 into the meshing groove 331. By providing multiple teeth 351 and magnetic members 320, the stability of the engagement of the magnetic member 320 and the combination sleeve 330 can be improved. The engagement state of the clutch device 300 is more stable, and the output of the driving assembly 210 can be stably transmitted to the rotating door device 240.

[0049] Among them, the number of meshing grooves 331 can be greater than the number of magnetic members 320, which improves the success rate of clamping the magnetic member 320 into the meshing groove 331. The number of teeth 351 can be the same as the number of magnetic members 320. Generally, each magnetic member 320 is located between two adjacent teeth 351, and the magnetic members 320 can not interfere with each other and maintain their respective functions.

[0050] Specifically, the magnetic member 320 can be provided with two, three or more. The tooth 351 is provided with two, three or more corresponding to the tooth 351. The meshing groove 331 is provided with four, six or more corresponding to the meshing groove 331. The actual situation can be set, which is not limited here.

[0051] In some embodiments, the magnetic piece 320 is spherical. The radius of the engaging groove 331 is equal to the radius of the magnetic piece 320. Therefore, the shape of the engaging groove 331 matches the shape of the magnetic piece 320, and the magnetic piece 320 cannot move relative to the engaging groove 331 after being clamped into the engaging groove 331. The magnetic piece 320 and the combination sleeve 330 can be stably engaged and synchronously rotated.

[0052] Further, the depth of the engaging groove 331 is less than or equal to the radius of the magnetic piece 320. Therefore, the opening of the engaging groove 331 is the area with the largest width, which can smoothly clamp the magnetic piece 320. The size of the magnetic piece 320 clamped into the engaging groove 331 is appropriate, and the part of the magnetic piece 320 outside the engaging groove 331 can be pushed against the force to drive the cam 350, the magnetic piece 320 and the combination sleeve 330 to synchronously rotate.

[0053] In some embodiments, the combination sleeve 330 includes a first shaft sleeve 332, a combination plate 333 and a connecting plate 334. The first shaft sleeve 332 is used to interface with the rotating door device 240. The combination plate 333 is sleeved outside the holder 310, and the engaging groove 331 is formed on the inner side of the combination plate 333. The connecting plate 334 connects the first shaft sleeve 332 and the combination plate 333, and the connecting plate 334 and the holder 310 are relatively spaced apart, and the magnetic piece is located between the connecting plate 334 and the holder 310. The combination sleeve 330 can be stably interfaced with the rotating door device 240, specifically coaxially fixed with the rotating input piece 241.

[0054] In some embodiments, the holder 310 includes a second shaft sleeve 311 and a holding plate 312. The second shaft sleeve 311 is used to interface with the drive assembly 210. The holding plate 312 is connected to the second shaft sleeve 311 and located inside the combination plate 333. The holding plate 312 and the combination sleeve 330 are relatively spaced apart, and the magnetic piece 320 is located between the combination sleeve 330 and the holding plate 312. Specifically, the magnetic piece is located between the combination plate 333 and the holding plate 312. Since the holder 310 is used to adsorb the magnetic piece 320 when the drive assembly 210 stops driving, in order to facilitate structural installation, the holder 310 can be coaxially fixed with the drive cam 350, that is, coaxially and oppositely fixed with the rotating output shaft 211 of the drive assembly 210. The magnetic piece 320 is limited in the axial direction of the engaging member 301 by the connecting plate 334 and the holding plate 312, and the structure of the engaging member 301 is more stable.

[0055] In addition, the retaining plate 312 is made of magnetic conductive material, which can attract the magnetic member 320 when the driving assembly 210 stops driving. It should be noted that the combination sleeve 330 and the driving cam 350 are made of non-magnetic conductive material, which avoids affecting the engagement and disengagement of the combination sleeve 330 and the magnetic member 320. In other embodiments, the retaining plate 312 can also be made of magnetic material, and the magnetic member can be made of magnetic conductive material. The retaining plate 312 can attract the magnetic member 320 to disengage from the combination sleeve 330.

[0056] In some embodiments, the outer diameter of the retaining plate 312 is smaller than the inner diameter of the combination plate 333, which ensures that the retaining plate 312 can attract the magnetic member 320 when the driving assembly 210 stops driving, and the magnetic member 320 can effectively disengage from the combination sleeve 330, so that the clutch device 300 is in the disengaged state. The specific size of the retaining plate 312 and the combination plate 333 can be determined according to the size and magnetic parameters of the actual magnetic member 320, which is not limited here.

[0057] The rotating door device 240 of the switch door mechanism 200 will be described below:

[0058] Please refer to Figures 1 to 5 In some embodiments, the rotating door device 240 includes the translation assembly 220 and the connecting rod 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 connecting rod 230 includes oppositely arranged first and second ends 231 and 232. The first end 231 of the connecting rod 230 is rotationally arranged in the translation assembly 220, and the second end 232 of the connecting rod 230 is rotationally arranged in the other one of the cabinet 110 and the door body 120 or the hinge mechanism 130 of the cabinet assembly 100.

[0059] By arranging the connecting rod 230 as described above, the movement of the first end 231 of the connecting rod 230 driven by the translation assembly 220 can realize the swinging of the connecting rod 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 movement of the first end 231 of the connecting rod 230, the swinging of the connecting rod 230 can drive the door body 120 to rotate relative to the cabinet 110, and the automatic opening and closing door function can be realized. When the driving assembly 210 is disengaged from the translation assembly 220, the first end 231 of the connecting rod 230 can freely move on the translation assembly 220 during the forced rotation of the door body 120, and the manual opening and closing door function can be realized. By arranging the switch door mechanism 200, the user can freely choose to manually open and close the door or use the automatic opening and closing door function.

[0060] By setting the switch 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 the opening door instruction, 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, 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 box body 110 to open the box body 110. Obtain the 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 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.

[0061] By setting the switch door mechanism 200, the power-assisted opening and closing door function when manually operating can also be realized, and the power-assisted opening and closing door function is as follows: when the user manually operates the opening and closing 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, the translation assembly 220 can drive the first end 231 of the connecting rod 230 to move, and the power-assisted opening and closing door is realized. Since the user adds manual operation at this time, in order to improve the use safety, if there is abnormal resistance due to manual operation or other obstacles during the power-assisted opening and closing door, 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.

[0062] The switch door mechanism 200 of the present application can realize the automatic opening and closing door function and the power-assisted opening and closing door function when manually operating, realize automation and intelligentization, and on the box assembly 100 provided with the adsorption structure or maintaining the internal and external negative pressure between some box bodies 110 and door bodies 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, and improve the sealing performance.

[0063] Since the switch door mechanism 200 has the clutch device 300, in the power failure scene, 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 connecting 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.

[0064] 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 during the opening 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.

[0065] 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 during the opening 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.

[0066] 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, and the automatic opening and closing mechanism 200 has a reasonable structure design and layout, and can be used for a cabinet assembly 100 with large-angle opening and closing, and is particularly suitable for automatic opening and closing of embedded household appliances and furniture products.

[0067] 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.

[0068] Specifically, the translation assembly 220 includes a screw rod 221 and a screw block 222. The screw rod 221 is rotationally arranged on the cabinet 110 or the door body 120, and the screw rod 221 is the rotation input 241. The screw block 222 is threadedly connected with the screw rod 221, and the second end 232 of the linkage rod 230 is rotationally 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 screw rod 221 to rotate, and the screw block 222 is translated on the screw rod 221 to drive the second end 232 of the linkage rod 230 to move. When the clutch device 300 separates the driving assembly 210 and the translation assembly 220, the power transmission between the driving assembly 210 and the translation assembly 220 can be cut off, and when the door body 120 is manually opened or closed, the screw rod 221 is in a free rotation state, and the linkage rod 230 can drive the screw block 222 to be translated on the screw rod 221.

[0069] When the translation assembly 220 is arranged at the top or the bottom of the door body 120, the screw rod 221 can be arranged in 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 screw rod 221 can also be arranged in other directions.

[0070] When the translation assembly 220 is arranged at the top or the bottom of the cabinet 110, the screw rod 221 can be arranged in the depth direction of the cabinet 110. The translation assembly 220 can be arranged on the side of the cabinet 110 close to the hinge mechanism 130 of the corresponding door body 120, thereby shortening the driving stroke of the linkage rod 230, and the overall structure of the door opening and closing mechanism 200 is more compact, and the space occupied is small. Of course, the screw rod 221 can also be arranged in other directions.

[0071] Please refer to Figure 9 , Figure 9 is a partial cross-sectional structural schematic view of the door opening and closing mechanism of an embodiment of the present application.

[0072] Specifically, the number of heads, the tooth shape, and the length of the screw rod 221 can be designed according to actual needs. The screw rod 221 is a non-self-locking structure. The connecting end of the screw rod 221 and the clutch device 300 is further provided with a bearing seat 223, the bearing seat 223 is used to be fixed on the corresponding position of the cabinet 110 or the door body 120 together with the screw rod 221, the screw rod 221 is sleeved with a shaft sleeve 225, and the shaft sleeve 225 is installed on the bearing seat 223 through a bearing 224. The end of the screw rod 221 away from the clutch device 300 can be supported through a supporting sleeve 2221 arranged at the end. By arranging the bearing 224, the rotation resistance of the screw rod 221 can be reduced, the smoothness of rotation can be improved, the resistance feeling of a user when manually opening or closing the door can be sufficiently reduced, the driving force required for the driving assembly 210 to drive the screw rod 221 to rotate can be reduced, and a silent effect can be achieved.

[0073] Of course, the bearing 224 and the support sleeve 2221 can also be exchanged at both ends of the screw rod 221, which is not limited here.

[0074] In other embodiments, the translation assembly 220 can also be other driving structures that can realize the translation of the second end 232 of the driving link 230. For example, other translation driving structures such as gear and rack.

[0075] In some embodiments, the switch door mechanism 200 further comprises a position monitoring assembly. The position monitoring assembly comprises a sensor 251. The sensor 251 is arranged at one end of the screw rod 221. The sensor 251 is used to sense the position of the screw block 222. During the rotation of the door body 120, the screw block 222 moves along the screw rod 221, and the sensor 251 senses the position change of the screw block 222, thereby obtaining the rotation angle of the door body 120. When the sensor 251 senses that the trigger moves to the predetermined position, it indicates that the door body 120 is opened or closed to the position, and the sensor 251 sends a signal to the driving assembly 210, and the driving assembly 210 stops driving.

[0076] In some embodiments, the driving assembly 210 comprises a motor 212, a rotating output shaft 211, a speed reducer 213, and a fixed seat 214. The fixed seat 214 is arranged at a corresponding position of the box body 110 or the door body 120. The motor 212 is arranged in the fixed seat 214. The motor 212 outputs power through the rotating output shaft 211. The speed reducer 213 is connected to the motor 212, and is used to cooperate with the motor 212 to reduce the rotation speed and increase the torque.

[0077] In addition, in order to make the space more compact, the clutch device 300 can also be installed in the fixed seat 214. The coupling sleeve 330 is arranged to rotate in the fixed seat 214. The retainer 310 is separated from the motor 212 by a gasket 215, and the rotating output shaft 211 passes through the gasket 215 and is fixed opposite to the driving cam 350.

[0078] The switch door mechanism 200 of the present application has simple and compact structure, reasonable layout, does not occupy the space of the box assembly 100, can be used for automatic opening and closing of the door of the box assembly 100 with large angle, is especially suitable for automatic opening and closing of the door of the embedded box assembly 100, and solves the automatic opening and closing of the door in a compact installation environment. The box assembly 100 adopting 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.

[0079] 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 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 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.

[0080] The above 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 clutching device, characterized in that The clutch device is arranged between the driving assembly and the rotating door device to realize the engagement and disengagement of the driving assembly and the rotating door device, and comprises: an engaging member comprising a holder and at least one magnetic piece which can be adsorbed to the holder; a combination sleeve which is arranged outside the holder and is used to interface with the rotating door device, and at least one engagement groove which is matched with the magnetic piece is formed in the inside of the combination sleeve; a driving cam which is located between the combination sleeve and the holder and is used to interface with the driving assembly; the driving cam rotates to push the magnetic piece partially into the engagement groove, and the combination sleeve is driven to rotate synchronously by continuously pushing the magnetic piece; when the driving assembly stops driving, the magnetic piece can be adsorbed by the holder and exits the engagement groove.

2. The clutching device of claim 1, wherein, The driving cam has at least one gear tooth, and the distance between the end of the gear tooth away from the rotation axis and the inner wall of the combination sleeve is smaller than the maximum length of the part of the magnetic piece located outside the engagement groove after the magnetic piece is clamped into the engagement groove, so that the driving cam can drive the combination sleeve to rotate synchronously by pushing the magnetic piece.

3. A clutching device according to claim 2, characterized in that In the radial direction of the driving cam, the outer side surface of each gear tooth is an outward convex arc surface.

4. The clutching device of claim 2, wherein, The magnetic piece can be provided with at least two, the engagement groove is provided with at least two which are spaced apart, and the gear tooth is provided with at least two which are correspondingly arranged to push the corresponding magnetic piece into the engagement groove.

5. The clutching device of claim 1, wherein, The magnetic piece is spherical, the radius of the engagement groove is equal to the radius of the magnetic piece, and the depth of the engagement groove is smaller than or equal to the radius of the magnetic piece.

6. The clutching device of claim 1, wherein, The combination sleeve comprises: a first shaft sleeve which is used to interface with the rotating door device; a combination plate which is arranged outside the holder and has the engagement groove formed in the inside thereof; a connecting plate which connects the first shaft sleeve and the combination plate, and the connecting plate and the holder are relatively spaced apart, and the magnetic piece is located between the connecting plate and the holder.

7. The clutching device of claim 1, wherein, The holder comprises: a second shaft sleeve which is used to interface with the driving assembly; a holding plate which connects the second shaft sleeve and is located inside the combination sleeve, the holding plate is made of magnetic conductive material, the holding plate and the combination sleeve are relatively spaced apart, and the magnetic piece is located between the combination sleeve and the holding plate.

8. A clutching device according to claim 7, characterised in that The outer diameter of the holding plate is smaller than the inner diameter of the combination sleeve, so that when the holding plate adsorbs the magnetic piece, the magnetic piece is separated from the combination sleeve.

9. A door opening mechanism characterized by comprising: The switch door mechanism is arranged in a box assembly, and the box assembly comprises a box and a door body which is rotatably arranged in the box, and the switch door mechanism comprises: a rotating door device which is arranged between the box and the door body and is used to drive the door body to rotate; a driving assembly which is used to provide power for the rotating door device; a clutch device which is arranged between the rotating door device and the driving assembly, and the clutch device adopts any one of the clutch devices in claims 1-8.

10. A door opening mechanism according to claim 9, characterised in that The rotating door device comprises: a translation assembly which is arranged in one of the box and the door body together with the driving assembly, and the translation assembly is used to interface with the combination sleeve; A linkage rod, a first end of the linkage rod is rotatably arranged on the translation assembly, a second end of the linkage rod is rotatably arranged on the other one of the box and the door 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 to rotate relative to the box.

11. A door opening mechanism according to claim 10, wherein The translation assembly comprises: A lead screw, rotatably arranged on the box or the door, the lead screw is coaxially fixed with the coupling sleeve; A screw block, threadedly connected with the lead screw, the second end of the linkage rod is rotatably arranged on the screw block.

12. A door opening mechanism according to claim 11, characterised in that The lead screw is arranged on the top, bottom or inside of the box, the lead screw extends along the depth direction of the box; Or, the lead screw is arranged on the top, bottom or inside of the door, the lead screw extends along the width direction of the door.

13. A box assembly characterized by, Comprise: A box; A door, used to open or close the box; A hinge mechanism, pivotally connecting the box and the door; The door opening and closing mechanism according to any one of claims 9-12, used to drive the door to rotate relative to the box.

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