Door opening and closing mechanism and box body assembly

Abstract

The utility model discloses a door opening and closing mechanism and a box body assembly, the door opening and closing mechanism is used for being arranged on the box body assembly, the box body assembly comprises a box body and a door body rotationally arranged on the box body, and the door opening and closing mechanism comprises a door rotating device arranged between the box body and the door body and used for driving the door body to rotate; the driving assembly is used for providing power for the revolving door device; the clutch device is arranged between the revolving door device and the driving assembly so as to realize connection and separation of the driving assembly and the revolving door device; the clutch device comprises a joint component and a combination sleeve, the combination sleeve is in butt joint with the revolving door device, the joint component is driven by the driving assembly to move in the radial direction to be in butt joint with the combination sleeve, and the clutch device is in a joint state; when the driving assembly stops driving, the joint component can be separated from the combination sleeve, and the clutch device is in a separated state. According to the door opening and closing mechanism, the clutch device is adopted, a user can freely select the manual door opening and closing function or the automatic door opening and closing function, the assisted door opening and closing 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 adopted by the application is: a door opening and closing mechanism used for being 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 door rotating 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 door rotating device; a clutch device arranged between the door rotating device and the driving assembly to realize engagement and separation of the driving assembly and the door rotating device; the clutch device comprising an engagement member and a combination sleeve, the combination sleeve being in abutment with the door rotating device, the engagement member being moved radially to be in abutment with the combination sleeve under the driving of the driving assembly, and the clutch device being in an engaged state; the driving assembly stopping driving, the engagement member being able to be separated from the combination sleeve, and the clutch device being in a separated state.

[0006] According to an embodiment of the application, at least one engagement groove is formed in the inner side of the combination sleeve, and the engagement member is able to be moved radially to be engaged with the engagement groove under the driving of the driving assembly, so as to realize engagement with the combination sleeve.

[0007] According to an embodiment of the application, the engagement member comprises: a protection ring, the combination sleeve being arranged outside the protection ring; at least one transmission pin shaft movably arranged in the protection ring, the transmission pin shaft being arranged in one-to-one correspondence with the engagement groove; and a driving gear located in the protection ring, the driving gear being used for being in abutment with the driving assembly; the driving gear being able to drive the transmission pin shaft to extend and be clamped into the engagement groove under rotation; and the transmission pin shaft being able to retreat into the protection ring under the stopping of the driving of the driving assembly.

[0008] According to an embodiment of the present application, the engaging member comprises at least one elastic member corresponding to the transmission pin shaft, which is arranged in the coupling sleeve to drive the transmission pin shaft to retract into the coupling sleeve.

[0009] According to an embodiment of the present application, the driving gear has at least one tooth corresponding to the transmission pin shaft; the transmission pin shaft has a circular arc concave surface at one end facing the driving gear; when the driving gear rotates, the tooth pushes the transmission pin shaft to extend outward along the circular arc concave surface; when the tooth is opposite to the middle part of the circular arc concave surface, the transmission pin shaft can retract into the coupling sleeve.

[0010] According to an embodiment of the present application, the engaging member comprises a holder in the coupling sleeve, at least one magnetic member that can be adsorbed to the holder, and a driving cam between the coupling sleeve and the holder for interfacing with the driving assembly; the driving cam rotates to push the magnetic member partially into the engagement groove, and continues to push the magnetic member to drive the coupling sleeve to rotate synchronously; when the driving assembly stops driving, the magnetic member can be adsorbed by the holder and exit the engagement groove.

[0011] According to an embodiment of the present application, the driving cam has at least one tooth, the distance between the end of the tooth away from the rotation axis and the inner wall of the coupling sleeve is smaller than the maximum length of the part of the magnetic member outside the engagement groove after the magnetic member is clamped into the engagement groove, so that the driving cam can drive the coupling sleeve to rotate synchronously by pushing the magnetic member.

[0012] According to an embodiment of the present application, the outer side surface of each tooth of the driving cam is an outward convex arc surface in the radial direction of the driving cam.

[0013] According to an embodiment of the present application, the rotating door device comprises a translation assembly, which is arranged in one of the box body and the door body and interfaces with the coupling sleeve.

[0014] A connecting rod, the first end of the connecting rod is rotationally arranged in the translation assembly, and the second end of the connecting rod is rotationally arranged in the other one of the box body and the door body or the hinge mechanism of the box assembly; the translation assembly can drive the first end to move to realize the swing of the connecting rod, thereby driving the door body to rotate relative to the box body.

[0015] According to an embodiment of the present application, the translation assembly is arranged at the top, bottom or inside of the box body and extends along the depth direction of the box body; or the translation assembly is arranged at the top, bottom or inside of the door body and extends along the width direction of the door body.

[0016] To solve the above technical problems, the application adopts another technical solution: a box assembly, comprising: a box; a door body for opening or closing the box; a hinge mechanism pivotally connecting the box 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.

[0017] The application has the following beneficial effects: the clutch device in the door opening and closing mechanism can realize the engagement and disengagement of the driving assembly and the door rotating device, the user can freely choose to manually open and close the door or use the automatic door opening and closing function, and the power-assisted door opening and closing function can also be realized, with diversified functions. The engagement member in the clutch device can realize engagement and disengagement with the combination sleeve through radial movement, the clutch device can switch between the engagement state and the disengagement state, thereby realizing the engagement and disengagement of the driving assembly and the door rotating device, with simple and compact structure, fewer related parts, small overall volume, and strong installation adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor based on these drawings.

[0019] Figure 1 is a perspective structural schematic diagram of a box assembly of an embodiment of the application, wherein the box assembly is in a closed state;

[0020] Figure 2 is a perspective structural schematic diagram of a box assembly of an embodiment of the application, wherein the box assembly is in an open state;

[0021] Figure 3 is a top view structural schematic diagram of a box assembly of another embodiment of the application, wherein the box assembly is in a closed state;

[0022] Figure 4 is a top view structural schematic diagram of a box assembly of another embodiment of the application, wherein the box assembly is in an open state;

[0023] Figure 5 is a perspective structural schematic diagram of a door opening and closing mechanism of an embodiment of the application;

[0024] Figure 6 is a cross-sectional structural schematic diagram of a clutch device of an embodiment of the application, at this time, the clutch device is in a disengaged state;

[0025] Figure 7is another perspective view of the cross-sectional structure of the clutch device of an embodiment of the present application, at this time, the clutch device is in the disengaged state;

[0026] Figure 8 is another perspective view of the cross-sectional structure of the clutch device of an embodiment of the present application, at this time, the clutch device is in the engaged state;

[0027] Figure 9 is an exploded structural schematic view of the clutch device of yet another embodiment of the present application;

[0028] Figure 10 is a cross-sectional structural schematic view of the clutch device of yet another embodiment of the present application;

[0029] Figure 11 is another perspective view of the cross-sectional structure of the clutch device of yet another embodiment of the present application;

[0030] Figure 12 is a partial cross-sectional structural schematic view of the switch door mechanism of yet another embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to make the above objectives, features and advantages of the present application more apparent, more comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, for the sake of description, only the parts related to the present application are shown in the drawings, and not all the structures. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0032] 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 phrase appears at various locations in the specification does not necessarily refer to the same embodiment, nor is it necessarily mutually exclusive of other embodiments, or alternative or alternative embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0033] With the development of automation and intelligence of household equipment, the existing part of the household equipment is realized by automatic opening and closing device between the box body and the door body. The automatic opening and closing of the door body on the box body.

[0034] Please refer to Figure 1 and Figure 2 , Figure 1 is a three-dimensional structural schematic view of the box assembly of an embodiment of the present application, wherein the box assembly is in the closed state; Figure 2is a perspective view of a cabinet assembly according to an embodiment of the present application, in which the cabinet assembly is in an open state.

[0035] A cabinet assembly 100 is provided according to an embodiment of the present application. 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 configured to open or close the cabinet 110. The hinge mechanism 130 is configured to pivotally connect the cabinet 110 and the door 120. The door opening and closing mechanism 200 is configured to be arranged on the cabinet 110 and the door 120, and configured to drive the door 120 to rotate relative to the cabinet 110. The cabinet assembly 100 according to the present application can realize automatic door opening and closing, manual door opening and closing, and power-assisted door opening and closing when manually operated.

[0036] The cabinet assembly 100 according to the present application can be a refrigerator, a beverage cabinet or other refrigeration equipment, or can be a dishwasher, a washing machine, a dryer or other cleaning equipment, or can be a cabinet or other furniture, or can be other equipment having a cabinet door structure, which is not listed here.

[0037] The door opening and closing mechanism 200 according to the present application can be used on the cabinet assembly 100 having one or more doors 120. The door opening and closing mechanism 200 can be installed on the cabinet assembly 100 individually or in combination.

[0038] The door opening and closing mechanism 200 according to 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.

[0039] Please continue to refer to Figures 3 to 5 , Figure 3 is a top view of a cabinet assembly according to another embodiment of the present application, in which the cabinet assembly is in a closed state. Figure 4 is a top view of a cabinet assembly according to another embodiment of the present application, in which the cabinet assembly is in an open state. Figure 5 is a perspective view of a door opening and closing mechanism according to an embodiment of the present application.

[0040] The following will be described in detail in combination with an embodiment of the door opening and closing mechanism 200:

[0041] A door opening and closing mechanism 200 is provided according to an embodiment of the present application. The door opening and closing mechanism 200 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 10) is arranged between the box body 110 and the door body 120, and is used to drive the door body 120 to rotate. The rotary input member 241 is arranged on the rotary door device 240. The clutch device 300 is arranged between the driving assembly 210 and the rotary door device 240, and is used to engage or separate the rotary output shaft 211 and the rotary input member 241. When the clutch device 300 engages the rotary output shaft 211 and the rotary input member 241, the power of the driving assembly 210 can be transmitted to the rotary door device 240, so as to realize automatic opening and closing of the door body 120. When the clutch device 300 separates the rotary output shaft 211 and the rotary input member 241, the power transmission between the driving assembly 210 and the rotary door device 240 can be cut off, and the user can manually operate the door body 120 to rotate freely.

[0042] The clutch device 300 includes an engaging member 301 and a combination sleeve 330. The combination sleeve 330 is in abutment with the rotary door device 240, and can be used to be coaxially fixed opposite to the rotary input member 241. The engaging member 301 is driven by the driving assembly 210 to move radially to be in abutment with the combination sleeve 330. When the clutch device 300 is in the engaging state, the driving assembly 210 can control the rotary door device 240 to work. When the driving assembly 210 stops driving, the engaging member 301 can be separated from the combination sleeve 330, and the clutch device 300 is in the separating state, so that the rotary door device 240 is not controlled by the driving assembly 210.

[0043] The engaging member 301 in the clutch device 300 in the present application can be engaged with and separated from the combination sleeve 330 through radial movement. The clutch device 300 can switch between the engaging state and the separating state, so as to realize engagement and separation of the driving assembly 210 and the rotary door device 240. The structure is simple and compact, the number of related parts is small, the overall volume is small, and the installation adaptability is strong.

[0044] Further, at least one engagement groove 331 is formed in the inner side of the combination sleeve 330. The engaging member 301 can move radially to be engaged with the engagement groove 331 under the driving of the driving assembly, so as to be engaged with the combination sleeve 330. The clutch device 300 in the door opening and closing mechanism 200 in the present application is driven through engagement, so that the engagement of the driving assembly 210 and the rotary door device 240 is more stable.

[0045] The clutch device 300 can have various implementation manners, which will be described in detail in combination with embodiments as follows:

[0046] Please refer to Figures 6 to 8 , Figure 6 is a cross-sectional structure schematic diagram of the clutch device in an embodiment of the present application. At this time, the clutch device is in the separating state. Figure 7 is another cross-sectional structure schematic diagram of the clutch device in an embodiment of the present application from another perspective. At this time, the clutch device is in the separating state. Figure 8is another view of the profile structure of the clutch device of an embodiment of the present application, and the clutch device is in the engaged state.

[0047] In some embodiments, the engagement member 301 comprises a protective ring 310 and at least one transmission pin shaft 320. The transmission pin shaft 320 is arranged radially movably on the protective ring 310, and the protective ring 310 supports and limits the transmission pin shaft 320. A coupling sleeve 330 is sleeved outside the protective ring 310 and is fixed coaxially with the rotary input member 241. At least one engagement groove 331 is formed on the inner side of the coupling sleeve 330, and the engagement groove 331 is arranged one-to-one with the transmission pin shaft 320. A drive gear 350 is fixed coaxially with the rotary output shaft 211, and the drive gear 350 is located inside the protective ring 310. When the drive gear 350 does not rotate, the transmission pin shaft 320 can be withdrawn into the protective ring 310, and the clutch device 300 is in the disengaged state; when the drive gear 350 rotates, the drive gear 350 rotates to push the transmission pin shaft 320 to extend and be clamped into the engagement groove 331, and each transmission pin shaft 320 is in engagement with the coupling sleeve 330, which can drive the coupling sleeve 330 to rotate synchronously, and the clutch device 300 is in the engaged state.

[0048] In this embodiment, the clutch device 300 adopts a pure mechanical structure, and the output rotation of the drive assembly 210 can realize the engagement of the drive assembly 210 and the rotating door device 240. The stop of the output rotation of the drive assembly 210 can realize the disengagement of the drive assembly 210 and the rotating door device 240. No additional electric control system and driving device are 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.

[0049] In some embodiments, the protective ring 310 is provided with at least one accommodation groove 311, and the accommodation groove 311 is arranged one-to-one with the transmission pin shaft 320. The accommodation groove 311 extends radially along the protective ring 310, and the transmission pin shaft 320 can move radially along the protective ring 310. The arrangement of the protective ring 310 can ensure the synchronous rotation of each transmission pin shaft 320.

[0050] In order to maintain the disengaged state of the clutch device 300 when the drive assembly 210 is not working, in some embodiments, the engagement member 301 further comprises at least one elastic member 340. The elastic member 340 is arranged one-to-one with the transmission pin shaft 320, and the elastic member 340 is arranged on the protective ring 310. When the drive gear 350 does not rotate, the clutch device 300 is in the disengaged state; when the drive gear 350 rotates, the drive gear 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 engagement groove 331, each transmission pin shaft 320 is in engagement with the coupling sleeve 330, which can drive the coupling sleeve 330 to rotate synchronously, and the clutch device 300 is in the engaged state.

[0051] In some embodiments, the transmission pin shaft 320 can be retracted into the protection ring 310 when the driving gear 350 is not rotating by other means, for example, the engagement groove 331 of the coupling sleeve 330 and the transmission pin shaft 320 are matched by a slope. When the driving gear 350 does not output the rotating driving force, the rotation of the coupling sleeve 330 can push the transmission pin shaft 320 to retract into the protection ring 310, avoiding affecting the manual opening of the door body 120. Of course, the retraction of the transmission pin shaft 320 can also be achieved by other structures, and different structures can be used alone or in combination, which are not limited here.

[0052] Specifically, the accommodating groove 311 is provided with a limiting protrusion 312, the transmission pin shaft 320 is formed with a step portion 321 at one end thereof facing the driving gear 350, and the elastic member 340 is abutted at one end thereof against the step portion 321 and at the other end thereof against the limiting protrusion 312. The elastic member 340 is in a compressed state, and the elastic force thereof drives the transmission pin shaft 320 to retract into the coupling sleeve 330. When the driving gear 350 rotates, the driving gear 350 pushes the transmission pin shaft 320 to extend outward, and the elastic member 340 is further compressed, and the transmission pin shaft 320 extends out of the accommodating groove 311 into the engagement groove 331.

[0053] Specifically, the limiting protrusion 312 is located at the opening of the accommodating groove 311 on the side facing the coupling sleeve 330.

[0054] In some embodiments, the driving gear 350 has at least one tooth 351, and the tooth 351 is arranged one-to-one corresponding to the transmission pin shaft 320. The transmission pin shaft 320 is formed with a circular arc concave surface 322 at one end thereof facing the driving gear 350. When the driving gear 350 rotates, the tooth 351 pushes the transmission pin shaft 320 to extend outward along the circular arc concave surface 322. When the tooth 351 is opposite to the middle part of the circular arc concave surface 322, the elastic member 340 can drive the transmission pin shaft 320 to retract into the coupling sleeve 330.

[0055] Therefore, when the driving assembly 210 is powered, the driving gear 350 rotates, the wheel teeth 351 push the transmission pin shaft 320 outward along the circular arc concave surface 322, when the transmission pin shaft 320 engages into the engagement groove 331 of the coupling sleeve 330, the wheel teeth 351 abut against the circular arc concave surface 322 of the transmission pin shaft 320, the wheel teeth 351 drive 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 rotating door device 240 are engaged. When the door body 120 is opened or closed to the position, the driving assembly 210 is powered off, the driving gear 350 stops rotating, the elastic member 340 drives the transmission pin shaft 320 to move into the coupling sleeve 330, the circular arc concave surface 322 drives the transmission pin shaft 320 to rotate to the middle part of the circular arc concave surface 322 where the wheel teeth 351 are located, the transmission pin shaft 320 is completely withdrawn into the coupling sleeve 330, the clutch device 300 is in the separated state, and the driving assembly 210 and the rotating door device 240 are separated.

[0056] Specifically, the transmission pin shaft 320 is provided in plurality, and the plurality of transmission pin shafts 320 are centrally symmetrically arranged on the protection ring 310. The transmission pin shafts 320 on the protection ring 310 are uniformly distributed, and when the transmission pin shaft 320 engages with the coupling sleeve 330, the driving of the coupling sleeve 330 can be stably driven to rotate.

[0057] When the driving gear 350 rotates, in order to enable the transmission pin shaft 320 to smoothly engage with the engagement groove 331 of the coupling sleeve 330, the size of the end of the transmission pin shaft 320 gradually decreases to form a guide portion 323. The engagement groove 331 is in the shape of a horn that expands toward the protection 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 clamped into the engagement groove 331. When the transmission pin shaft 320 is clamped 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 stably driven to rotate.

[0058] In addition to the above-mentioned embodiments, the clutch device 300 can also be implemented in other structures, please refer to the following embodiments:

[0059] Please continue to refer to Figures 9 to 11 , Figure 9 is an exploded structural schematic diagram of the clutch device of another embodiment of the present application; Figure 10 is a cross-sectional structural schematic diagram of the clutch device of another embodiment of the present application; Figure 11 is a cross-sectional structural schematic diagram of the clutch device of another embodiment of the present application.

[0060] In some embodiments, the engagement member 301 comprises a holder 360, at least one magnetic piece 370, and a driving cam 380. The magnetic piece 370 can be adsorbed to the holder 360, and the holder 360 supports and limits the magnetic piece 370. A coupling sleeve 330 is sleeved outside the holder 360 and is coaxially fixed with the rotating input member 241. At least one engagement groove 331 is formed on the inner side of the coupling sleeve 330, and the engagement groove 331 is used for clamping the magnetic piece 370. The driving cam 380 is coaxially fixed with the rotating output shaft 211, and the driving cam 380 is located between the coupling sleeve 330 and the holder 360. When the driving cam 380 rotates, the driving cam 380 rotates and pushes the magnetic piece 370 to be partially clamped into the engagement groove 331. The driving cam 380 abuts against the part of the magnetic piece 370 located outside the coupling sleeve 330, and drives the coupling sleeve 330 to rotate synchronously by continuously pushing the magnetic piece 370. At this time, the driving cam 380, the magnetic piece 370, and the coupling sleeve 330 can rotate synchronously, and the clutch device 300 is in the engaged state. When the driving cam 380 does not rotate, the magnetic piece 370 can be attracted out of the engagement groove 331 by the holder 360, and the clutch device 300 is in the separated state.

[0061] The clutch device 300 in the embodiment 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 clutch device 300 does not need to cooperate with an additional electric control system and driving device, and has the advantages of simple and compact structure, small number of related parts, small overall volume, and strong installation adaptability. In addition, the clutch device 300 in the door opening and closing mechanism 200 of the present application is driven by engagement, and the engagement of the driving assembly 210 and the rotating door device 240 is more stable.

[0062] 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 370, and the coupling sleeve 330, thereby ensuring the smooth operation of the door opening and closing mechanism 200 next time and ensuring the manual operation of the user.

[0063] The driving cam 380 has at least one tooth 381. The maximum outer diameter of the driving cam 380 is equal to or slightly smaller than the inner diameter of the coupling sleeve 330. Specifically, the distance between the end of the tooth 381 away from the rotation axis and the inner wall of the coupling sleeve 330 is smaller than the maximum length of the part of the magnetic piece 370 located outside the engagement groove 331 after being clamped into the engagement groove 331. Therefore, when the driving cam 380 rotates, the tooth 381 can push the magnetic piece 370 into the engagement groove 331, and the tooth 381 can abut against the magnetic piece 370. The driving cam 380 can drive the coupling sleeve 330 to rotate synchronously by pushing the magnetic piece 370.

[0064] When the driving cam 380 is driven to rotate, the driving cam 380 pushes the magnetic member 370 to rotate, and under the action of centrifugal force, the magnetic member 370 moves outward and is clamped into the engagement groove 331. Further, in order to facilitate the clamping of the magnetic member 370 into the engagement groove 331, the outer side surface of each tooth 381 is outwardly convex in the radial direction of the driving cam 380. Because the outer side surface of the tooth 381 is outwardly convex, when the tooth 381 rotates to the position where the arc surface contacts the magnetic member 370, the radial direction of the pushing force of the tooth 381 and the magnetic member 370 has an outward separation, and the tooth 381 can smoothly push the magnetic member 370 into the engagement groove 331. In addition, when the tooth 381 continues to rotate, the arc surface of the tooth 381 has a component force on the magnetic member 370 to make it tightly clamp into the engagement groove 331, and the magnetic member 370 can be stably clamped in the engagement groove 331.

[0065] 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 381 can push the magnetic member 370 into the engagement groove 331 in both forward and reverse directions, thereby achieving the opening and closing functions.

[0066] In order to improve the engagement effect of the engagement member 301 and the combination sleeve 330, the magnetic member 370 can be provided with at least two, the engagement groove 331 is provided with at least two, and the tooth 381 is provided with at least two corresponding to push the magnetic member 370 into the engagement groove 331. By providing multiple teeth 381 and magnetic members 370, the stability of the engagement of the magnetic member 370 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.

[0067] The number of engagement grooves 331 can be greater than the number of magnetic members 370, which can improve the success rate of clamping the magnetic member 370 into the engagement groove 331. The number of teeth 381 can be the same as the number of magnetic members 370. Generally, each magnetic member 370 is located between two adjacent teeth 381, and the magnetic members 370 can not interfere with each other and maintain their respective functions.

[0068] Specifically, the magnetic member 370 can be provided with two, three or more. The tooth 381 is provided with two, three or more corresponding to the tooth 381. The engagement groove 331 is provided with four, six or more corresponding to the tooth 381. The actual situation can be set, which is not limited here.

[0069] In some embodiments, the magnetic member 370 is spherical. The radius of the engagement slot 331 is equal to the radius of the magnetic member 370. Therefore, the shape of the engagement slot 331 matches the shape of the magnetic member 370, and after the magnetic member 370 is clamped into the engagement slot 331, the magnetic member 370 cannot move relative to the engagement slot 331, and the magnetic member 370 and the coupling sleeve 330 can be stably engaged and synchronously rotated. The spherical magnetic member 370 can be smoothly clamped into the engagement slot 331 at any angle, and can be smoothly separated from the engagement slot 331, which can improve the engagement and separation efficiency of the magnetic member 370 and the coupling sleeve 330.

[0070] Further, the depth of the engagement slot 331 is less than or equal to the radius of the magnetic member 370. Therefore, the opening of the engagement slot 331 is the region with the largest width, which can smoothly clamp the magnetic member 370, and the size of the magnetic member 370 clamped into the engagement slot 331 is appropriate, and the part of the magnetic member 370 outside the engagement slot 331 can be pushed by the magnetic member 370 to apply a force, and the cam 380, the magnetic member 370 and the coupling sleeve 330 can be synchronously rotated.

[0071] In some embodiments, the coupling sleeve 330 includes a first shaft sleeve 332, a coupling plate 333 and a connecting plate 334. The first shaft sleeve 332 is used to interface with the door device 240. The coupling plate 333 is sleeved outside the retainer 360, and the inner side of the coupling plate 333 is provided with the engagement slot 331. The connecting plate 334 connects the first shaft sleeve 332 and the coupling plate 333, and the connecting plate 334 and the retainer 360 are relatively spaced apart, and the magnetic member 370 is located between the connecting plate 334 and the retainer 360. The coupling sleeve 330 can be stably interfaced with the door device 240, specifically coaxially fixed with the rotary input member 241.

[0072] In some embodiments, the retainer 360 includes a second shaft sleeve 361 and a retaining plate 362. The second shaft sleeve 361 is used to interface with the drive assembly 210. The retaining plate 362 is connected to the second shaft sleeve 361 and located inside the coupling plate 333. The retaining plate 362 and the coupling sleeve 330 are relatively spaced apart, and the magnetic member 370 is located between the coupling sleeve 330 and the retaining plate 362. Specifically, the magnetic member is located between the coupling plate 333 and the retaining plate 362. Since the retainer 360 is used to adsorb the magnetic member 370 when the drive assembly 210 stops driving, in order to facilitate structural installation, the retainer 360 can be coaxially fixed with the drive cam 380, that is, coaxially and oppositely fixed with the rotary output shaft 211 of the drive assembly 210. The magnetic member 370 is limited in the axial direction of the engagement member 301 by the connecting plate 334 and the retaining plate 362, and the structure of the engagement member 301 is more stable.

[0073] In addition, the retaining plate 362 is made of magnetic conductive material, which can attract the magnetic member 370 when the driving assembly 210 stops driving. It should be noted that the combination sleeve 330 and the driving cam 380 are made of non-magnetic conductive material, which avoids affecting the combination of the combination sleeve 330 and the magnetic member 370 and the separation thereof. In other embodiments, the retaining plate 362 can also be made of magnetic material, and the magnetic member can be made of magnetic conductive material. The retaining plate 362 can attract the magnetic member 370 to separate from the combination sleeve 330.

[0074] In some embodiments, the outer diameter of the retaining plate 362 is smaller than the inner diameter of the combination plate 333, which ensures that the retaining plate 362 can attract the magnetic member 370 when the driving assembly 210 stops driving, and the magnetic member 370 can effectively separate from the combination sleeve 330, and the clutch device 300 is in the separated state. The specific size of the retaining plate 362 and the combination plate 333 can be determined according to the size and magnetic parameters of the actual magnetic member 370, which is not limited herein.

[0075] The rotating door device 240 of the switch door mechanism 200 is described in detail as follows:

[0076] 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.

[0077] 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 combination or separation of the driving assembly 210 and the translation assembly 220. When the driving assembly 210 is combined 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 separated 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 the manual opening and closing door function or the automatic opening and closing door function.

[0078] 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.

[0079] 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.

[0080] 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 some box bodies 110 and door bodies 120 provided with adsorption structures or box assemblies 100 maintaining internal and external negative pressure, 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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 corresponding hinge mechanism 130 of the 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.

[0089] Please refer to Figure 12 , Figure 12 is a partial cross-sectional structural schematic view of the door opening and closing mechanism of an embodiment of the present application.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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 360 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 380.

[0096] 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 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.

[0097] 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.

[0098] 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 door opening mechanism, characterized by, A switch door mechanism is used for a cabinet assembly, which comprises a cabinet and a door body rotatably arranged on the cabinet, and the switch door mechanism comprises: a rotating door device arranged between the cabinet 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; a clutch device arranged between the rotating door device and the driving assembly to realize engagement and disengagement of the driving assembly and the rotating door device; the clutch device comprises an engagement member and a combination sleeve, the combination sleeve is in abutment with the rotating door device, the engagement member is moved radially to be in abutment with the combination sleeve under the driving of the driving assembly, the clutch device is in an engaged state; the driving of the driving assembly is stopped, the engagement member can be disengaged from the combination sleeve, and the clutch device is in a disengaged state.

2. A door opening mechanism according to claim 1, characterised in that At least one engagement groove is formed in the inside of the combination sleeve, and the engagement member can be moved radially to be engaged with the engagement groove under the driving of the driving assembly to realize engagement with the combination sleeve.

3. A door opening mechanism according to claim 2, characterised in that The engagement member comprises: a protection ring, the combination sleeve is sleeved on the outside of the protection ring; at least one transmission pin shaft movably arranged on the protection ring, the transmission pin shaft is arranged in one-to-one correspondence with the engagement groove; a driving gear located in the protection ring, the driving gear is used for being in abutment with the driving assembly; the driving gear is rotated to drive the transmission pin shaft to extend and be clamped into the engagement groove; the driving of the driving assembly is stopped, and the transmission pin shaft can be withdrawn into the protection ring.

4. A door opening mechanism according to claim 3, characterised in that The engagement member comprises: at least one elastic member arranged in one-to-one correspondence with the transmission pin shaft, the elastic member is arranged in the combination sleeve to drive the transmission pin shaft to be withdrawn into the combination sleeve.

5. The door opening mechanism of claim 3, wherein The driving gear has at least one gear tooth arranged in one-to-one correspondence with the transmission pin shaft; the transmission pin shaft is formed with a circular arc concave surface at one end thereof facing the driving gear; when the driving gear is rotated, the gear tooth pushes the transmission pin shaft outward along the circular arc concave surface; when the gear tooth is opposite to the middle part of the circular arc concave surface, the transmission pin shaft can be withdrawn into the combination sleeve.

6. The door opening mechanism of claim 2, wherein The engagement member comprises: a retaining frame located in the combination sleeve; at least one magnetic member capable of being adsorbed on the retaining frame; a driving cam located between the combination sleeve and the retaining frame and used for being in abutment with the driving assembly; the driving cam is rotated to push part of the magnetic member into the engagement groove, and the combination sleeve is synchronously rotated by continuously pushing the magnetic member; the driving of the driving assembly is stopped, and the magnetic member can be adsorbed by the retaining frame and withdrawn from the engagement groove.

7. A door opening mechanism according to claim 6, characterised in that 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 member located outside the engagement groove after the magnetic member is clamped into the engagement groove, so that the driving cam can synchronously rotate the combination sleeve by pushing the magnetic member.

8. A door opening mechanism according to claim 7, characterised in that In the radial direction of the driving cam, the outer side surface of each gear tooth is an outward convex arc surface.

9. The door opening mechanism of claim 1, wherein The rotating door device comprises: A translation assembly is arranged in one of the box and the door body, and is used to be connected with the coupling sleeve; A connecting rod is arranged at a first end thereof in the translation assembly, and is arranged at a second end thereof in the other one of the box and the door body or the hinge mechanism of the box assembly; the translation assembly can drive the first end to move to realize the swing of the connecting rod, and then drive the door body to rotate relative to the box.

10. A door opening mechanism according to claim 9, wherein The translation assembly is arranged at the top, bottom or inside of the box, and extends along the depth direction of the box; Alternatively, the translation assembly is arranged at the top, bottom or inside of the door body, and extends along the width direction of the door body.

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

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