CN117780213A

CN117780213A - Door opening and closing device and electrical equipment

Info

Publication number: CN117780213A
Application number: CN202211145444.5A
Authority: CN
Inventors: 蒋卓华; 彭博; 符秀亮; 朱亚飞; 冯业瑞; 石兵; 袁进国; 王传东; 戚圣好; 陈荣海
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2024-03-29
Also published as: WO2024060742A1

Abstract

The application discloses a refrigerator, which belongs to the technical field of electrical equipment; the refrigerator comprises a refrigerator body, a door body rotatably arranged on the refrigerator body and a door opening and closing device connected with the refrigerator body and the door body; the door opening and closing device includes: a base; the driving mechanism comprises a driver fixedly arranged on the base and an output gear connected with the driver; the clutch mechanism comprises a first transmission assembly and a transmission structure which are detachably connected, the first transmission assembly is connected with the output gear, and the first transmission assembly and the output gear are arranged on the base side by side; the clutch pushing assembly pushes the transmission structure to be connected with or separated from the first transmission assembly; the linkage gear is rotatably arranged on the base and connected with the transmission structure, and the linkage gear and the transmission structure are arranged side by side; the door rotating mechanism is connected with the linkage gear and is connected with the door body, and the door body is rotated under the drive of the linkage gear. The refrigerator switch that this application embodiment provided simple operation, safety.

Description

Door opening and closing device and electrical equipment

Technical Field

The application belongs to electrical equipment technical field, especially relates to a door opening and closing device and electrical equipment.

Background

With the improvement of living standard, electrical equipment such as refrigerators, dish washers, disinfection cabinets and the like are widely penetrated into the lives of people. In order to maintain the sealing performance of the above electrical equipment, an adsorption structure is generally provided between the case and the door body or to maintain the internal and external negative pressure, and the door body is stably fixed to the case. Although the relative performance of the electrical equipment is improved, the difficulty of opening the door body is also improved to a certain extent, and the door body can be pulled open by usually needing larger force, so that the door body is inconvenient to use.

Disclosure of Invention

The application provides a door opening and closing device and electrical equipment, and aims to solve the technical problem that the door opening operation of the electrical equipment is inconvenient to a certain extent at least. For this purpose,

the embodiment of the application provides a refrigerator, which comprises: the door opening and closing device is connected to the box body and the door body;

the door opening and closing device includes:

a base;

the driving mechanism comprises a driver fixedly arranged on the base and an output gear connected with the driver;

the clutch mechanism comprises a first transmission assembly and a transmission structure which are detachably connected, the first transmission assembly is connected with the output gear, and the first transmission assembly and the output gear are arranged on the base side by side;

The clutch pushing assembly pushes the transmission structure to be connected with or separated from the first transmission assembly;

the linkage gear is rotatably arranged on the base and connected with the transmission structure, and the linkage gear and the transmission structure are arranged side by side;

the door rotating mechanism is connected with the linkage gear and is connected with the door body, and the door body is rotated under the drive of the linkage gear.

In some embodiments, the swing door apparatus comprises: the front connecting rod is connected with the door body, the front connecting rod is arranged between the bottom surface of the linkage gear and the base, and the rear connecting rod is arranged in a deflectable mounting groove formed in the top surface of the linkage gear.

In some embodiments, the swing door apparatus comprises: the front connecting rod and the rear connecting rod are hinged at the end parts, the front connecting rod is connected with the door body, the rear connecting rod is arranged in a mounting groove formed in the bottom surface of the linkage gear in a deflectable mode, and the front connecting rod and the rear connecting rod are arranged between the bottom surface of the linkage gear and the base.

In some embodiments, the swing door mechanism, the drive mechanism, and the clutch urging assembly are on the same side of the clutch mechanism as the linkage gear connection.

In some embodiments, the door and the case are rotatably connected to a first connection point, the front link and the door are connected to a second connection point, the rear link and the front link are rotatably connected to a third connection point, the linkage gear has a rotation center, and the second connection point and the third connection point are respectively located at both sides of the connection line of the first connection point and the rotation center.

In some embodiments, the front link is disposed outside the base region.

In some embodiments, the door opening and closing device further comprises a top door mechanism and a hovering mechanism, wherein the top door mechanism is connected with the linkage gear, the top door mechanism pushes the door body in the rotation process of the linkage gear, the hovering mechanism is connected between the linkage gear and the box body, and the hovering mechanism brakes the linkage gear on the base when the linkage gear rotates to a preset position;

the hovering mechanism, the top door mechanism and the revolving door mechanism are positioned on the circumferential side of the linkage gear, and the hovering mechanism and the revolving door mechanism are positioned on two sides of the top door mechanism.

In some embodiments, the transmission structure comprises a second transmission assembly and a transmission connection assembly connected with the second transmission assembly, and the clutch pushing assembly pushes the transmission connection assembly to be connected with or separated from the first transmission assembly.

In some embodiments, the first transmission assembly is a first transmission gear, the second transmission assembly is a second transmission gear, the first transmission gear and the second transmission gear are coaxially rotatably disposed on the base, and the first transmission gear is meshed with the output gear, and the second transmission gear is meshed with the linkage gear.

In some embodiments, the driver is fixedly disposed on the base and between the output gear and the base, and the first transmission gear and the output gear are disposed side by side, the second transmission gear and the linkage gear are disposed side by side, and the second transmission gear is disposed below the first transmission gear.

In some embodiments, the angle between the first line between the output gear and the first transmission gear and the second line between the second transmission gear and the second linkage gear is in the range of 90-120 degrees.

In some embodiments, the swing door apparatus is disposed within an area defined by the first wire, the second wire, and the door body.

In some embodiments, the transmission connecting component comprises a transmission connecting piece, the transmission connecting piece is provided with a connecting end and a pushing end, the pushing end is movably embedded in a clamping hole formed in the second transmission gear, and the pushing end is pushed and pushed by the clutch pushing component so as to push the connecting end to be connected with or separated from the first transmission gear.

In some embodiments, a clamping groove is formed in an axial end face of one side, close to the second transmission gear, of the first transmission gear, and the connecting end can be clamped into and separated from the clamping groove, so that the second transmission gear is connected with or separated from the first transmission gear.

In some embodiments, the clutch mechanism further includes a disconnect assembly coupled to the drive connection assembly and the second drive assembly, respectively, to provide a force to drive the drive connection assembly away from the first drive assembly.

In some embodiments, the separation assembly comprises: and the two ends of the elastic reset piece are respectively connected with the transmission connecting assembly and the second transmission assembly so as to provide elastic acting force for driving the connecting end to be separated from the first transmission assembly.

In some embodiments, the door opening and closing device further comprises a decoupling assembly coupled to the transmission structure and the base to provide a force to drive the transmission structure apart from the first transmission assembly.

In some embodiments, the decoupling assembly includes a first decoupling member coupled to the drive structure and a second decoupling member coupled to the base to provide a magnetic force that drives the coupling end apart from the first drive assembly.

In some embodiments, the clutch mechanism further comprises a stop assembly, the stop assembly comprises a connecting piece and a stop piece, one end of the connecting piece is fixed on the base, the first transmission assembly and the transmission structure are arranged on the connecting piece, and the stop piece is fixed at the other end of the connecting piece so as to block the first transmission assembly and the transmission structure.

In some embodiments, the door opening and closing device further includes a hovering mechanism movably disposed on the base, and the linkage gear is provided with a limiting structure, and when the linkage gear rotates to a state where the limiting structure is opposite to the hovering mechanism, the hovering mechanism moves to prop against the limiting structure so as to brake the revolving door mechanism to rotate the door body.

In some embodiments, the hover mechanism includes a hover member and an ejector member;

the pushing piece is arranged on the base, the hovering piece is movably arranged on the base, the hovering piece is connected with the pushing piece, and the propping part arranged on the hovering piece is propped against the linkage gear;

under the condition that the linkage gear rotates to a state that the limiting structure is opposite to the hovering mechanism, the ejector pushes the hovering piece to move, so that the propping part is propped in the limiting structure.

In some embodiments, the ejector is an elastic member having one end connected to the base and the other end connected to the hovering member and being elastically compressed or stretched between the base and the hovering member.

In some embodiments, the limiting structure comprises a groove arranged on the peripheral surface of the linkage gear, and the hovering piece props against the groove to brake the revolving door mechanism to rotate the door body.

The embodiment of the application has at least the following beneficial effects:

according to the refrigerator provided by the embodiment of the application, automatic door opening and closing operation is realized through the door opening and closing device arranged on the refrigerator body, interference with manual operation is reduced, and convenience and comfort in use are improved; and the door opening and closing device is reduced to the assembly height, so that the space requirement of the refrigerator on the surrounding installation environment is reduced. The door opening and closing device realizes the rotation of the door body through the cooperation of the door rotating mechanism and the driving mechanism, and realizes the automatic door opening and closing; the linkage gear is used for driving the door rotating mechanism to push and pull the door body to open and close the door; the clutch mechanism and the clutch pushing assembly are arranged, the first transmission assembly connected with the driving mechanism is pushed to be separated from or connected with the transmission structure connected with the linkage gear through the clutch pushing assembly, so that the on-off of a driving force transmission path is controlled, and the door opening and closing device is convenient to be compatible with automatic and manual door opening and closing; it is worth to say that, through setting up driver and output gear as special driving force output structure, set up side by side with clutch mechanism's first transmission subassembly and be connected with it, second transmission subassembly and linkage gear also set up side by side on the base and stably connect to form the flattened driving force transmission structure based on the base, for the vertical driving force transmission structure of integrating clutch structure to the output pivot of driver, can reduce the assembly height on the whole, reduced the whole height after assembling to the refrigerator to a certain extent, be convenient for reduce the requirement to the high condition of arranging the space.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram showing an assembled structure of a door opening and closing device according to an embodiment of the present application;

fig. 2 shows an exploded view of a first construction of a clutch mechanism of the door opening and closing device of fig. 1;

fig. 3 shows an exploded view of a second construction of the clutch mechanism of the door opening and closing device of fig. 1;

fig. 4 shows an exploded view of the clutch mechanism of the door opening and closing device of fig. 2 from another perspective

FIG. 5 shows a schematic structural view of a first transmission assembly of a clutch mechanism of the door opening and closing device of FIG. 1;

FIG. 6 shows a schematic structural view of a second transmission assembly of a clutch mechanism of the door opening and closing device of FIG. 1;

FIG. 7 shows a schematic structural view of a drive connection assembly of a clutch mechanism of the door opening and closing device of FIG. 1;

FIG. 8 is a schematic view showing the construction of a pushing sleeve of a clutch pushing assembly of a clutch mechanism of the door opening and closing device in FIG. 1;

FIG. 9 is a schematic view showing the structure of a push rod of a clutch pushing assembly of a clutch mechanism of the door opening and closing device in FIG. 1;

FIG. 10 is a schematic view showing an assembled structure of a clutch urging assembly of a clutch mechanism of the door opening and closing apparatus of FIG. 1;

FIG. 11 is a schematic view showing the assembly of a push sleeve of a clutch mechanism of the door opening and closing device of FIG. 1;

FIG. 12 is a schematic view showing the structure of an anti-rotation mechanism of a clutch mechanism of the door opening and closing device of FIG. 1;

FIG. 13 shows a schematic view of the door opening and closing apparatus of FIG. 1 in a hover condition;

FIG. 14 shows a first structural schematic view of the hover mechanism of the door opening and closing device of FIG. 1;

FIG. 15 is a schematic view showing the structure of a linkage gear of the door opening and closing apparatus of FIG. 1;

FIG. 16 shows a schematic view of the cooperation of the hovering element and the pushing element of the door opening and closing device of FIG. 1;

FIG. 17 shows a schematic structural view of a hover limit chute of the door opening and closing device of FIG. 1;

FIG. 18 shows a schematic view of the cooperation of the hover piece and hover limiter chute of the door opening and closing device of FIG. 1;

fig. 19 shows a schematic view of the structure of the top door part of the door opening and closing device of fig. 1;

fig. 20 shows a schematic structural view of another door opening mechanism of the door opening and closing device of fig. 1;

Fig. 21 shows a second structural schematic view of a hover mechanism of the door opening and closing device of fig. 1.

Reference numerals:

12-box body, 13-door body;

100-driving mechanism, 110-driver, 120-output gear;

200-clutch mechanism, 210-first transmission assembly, 211-clamping groove, 212-first transmission gear, 220-second transmission assembly, 221-clamping hole, 222-second transmission gear, 230-transmission connection assembly, 231-connection end, 2311-connection arm, 232-pushing end, 240-clutch pushing assembly, 241-pushing sleeve, 2411-pushing part, 2412-shaft sleeve part, 2413-first pushing surface, 2414-anti-rotation clamping groove, 242-pushing rod, 2421-second pushing surface, 2422-pushing arm, 2423-connection part, 243-linear driver, 244-shock pad, 250-separation assembly, 251-first separation member, 252-second separation member, 253-elastic reset member, 260-stop assembly, 261-connection member, 262-locking member, 263-stop member;

300-linkage gears, 320-limit structures and 330-top door parts;

400-revolving door mechanism, 410-front connecting rod, 420-rear connecting rod;

500-top door mechanism, 510-top door piece, 520-supporting part;

600-hover mechanism, 610-hover piece, 611-abutment, 612-push limit slot, 620-push piece, 630-hover connection piece, 640-hover limit piece;

900-a base, 906-a hovering limit sliding groove, 907-a limit boss, 908-a supporting groove, 909-a boss part, 920-a shared rotating shaft, 921-a supporting column, 922-a rotating shaft column, 923-a fastening through hole, 930-an anti-rotating mechanism and 931-an anti-rotating rib.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not in themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

With the improvement of living standard, electrical equipment such as refrigerators, dish washers, disinfection cabinets and the like are widely penetrated into the lives of people. In order to maintain the sealing performance of the above electrical equipment, an adsorption structure is generally provided between the case and the door body or to maintain the internal and external negative pressure, and the door body is stably fixed to the case. Although the relative performance of the electrical equipment is improved, the difficulty of opening the door body is also improved to a certain extent, and the door body can be pulled open by usually needing larger force, so that the door body is inconvenient to use. Therefore, in order to improve the convenience and safety of operation, an automatic door opening and closing device can be arranged between the door body and the box body, and the door opening and closing actuating mechanism is driven by the driving mechanism to realize auxiliary door opening and closing. However, the existing door opening and closing device is relatively complex in structure, large in size specification, large in space occupation requirement when assembled on electrical equipment, and particularly high in height direction, so that the electrical equipment has high requirements on the height conditions of field arrangement, and certain inconvenience is caused to field arrangement of electrical products; meanwhile, too high automatic door opening and closing device also affects the beautiful degree of the product.

The present application is described below with reference to specific embodiments in conjunction with the accompanying drawings:

referring to fig. 1, the refrigerator provided in the embodiment of the present application is provided with a door opening and closing device on a box 12, so as to realize automatic door opening and closing, thereby facilitating the improvement of convenience and comfort of door opening and closing operation.

In this application embodiment, door opening and closing device includes: the clutch mechanism comprises a driving mechanism 100, a clutch mechanism 200, a clutch pushing assembly 240, a linkage gear 300 and a revolving door mechanism 400. The clutch mechanism 200, the linkage gear 300 and the swing door mechanism 400 are sequentially driven by the driving mechanism 100 to realize the swing door body operation, so that the door opening and closing operation can be performed. Wherein, the pushing component 240 can be set as a part of the clutch mechanism 200 to form a clutch mechanism, and can selectively cut off or communicate a transmission path of a transmission structure of the door opening and closing device, thereby realizing transmission control between the driving mechanism 100 and the door opening and closing executing mechanism, flexibly realizing automatic door opening and closing and manual operation switching, improving the mutual interference between the manual door opening and closing device and the door opening and closing device, and improving the convenience, smoothness and safety of use.

The door opening and closing device provided by the embodiment of the application is mainly applied to electrical equipment such as a refrigerator and the like and is used for automatically opening or closing the door body 13, and the door opening and closing device can automatically open the door body 13 after receiving a door opening signal; the door opening signal can be triggered by a user or by the electrical equipment. Likewise, the door opening and closing device can automatically close the door body 13 after receiving the door closing signal; the door closing signal can be triggered by a user or by the electrical equipment.

Referring to fig. 1, 2, 3 and 4, the clutch mechanism 200 provided in the embodiment of the present application may include a first transmission assembly 210 and a transmission structure which are detachably connected, wherein the transmission structure may include a second transmission assembly 220 for respectively connecting the driving mechanism 100 and the linkage gear 300 of the door opening and closing device, and the engagement and the disengagement of the driving mechanism 100 and the linkage gear 300 are implemented by the engagement and the disengagement of the first transmission assembly 210 and the second transmission assembly 220 through the transmission connection assembly 230, so as to control the connection and the disconnection states between the driving mechanism 100 and the door body 13; the interference risk between the manual operation door body and the automatic door opening and closing body of the driving mechanism is reduced through the action of the clutch mechanism 200, and the operation convenience and the safety are improved.

It should be noted that, the driving mechanism 100 includes a driver 110 and an output gear 120 connected to the driver, the first transmission assembly 210 is directly driven and connected by the output gear 120, and the second transmission assembly 220 is normally connected with the linkage gear 300, so that the clutch pushing assembly 240 can push the transmission structure to move, so as to establish a connection relationship or a disconnection relationship with the first transmission assembly 210, thereby realizing simple clutch control.

In some embodiments, the first transmission assembly 210 and the output gear 120 are disposed side-by-side on the base 900, thereby flattening the drive force transmission mechanism, transmitting laterally, enabling a significant reduction in assembly height relative to vertically disposing the transmission assembly on the drive.

In some embodiments, the second transmission structure 220 and the linkage gear wheel 300 may also be disposed on the base 900 side by side, so that the driving force transmission mechanism is arranged flatly, transmitted laterally, and can keep a low assembly height.

In some embodiments, the driver 110 may be fixed on the base 900 and located between the output gear 120 and the base 900, where a transmission structure is disposed between the first transmission assembly 210 and the base 900, and the vertical arrangement relative to the base 900 is adopted, so as to achieve a miniaturized arrangement of the overall size and thickness while considering the requirements of a flattened arrangement manner and a reduced planar arrangement.

To achieve a detachable connection between the first transmission assembly 210 and the second transmission assembly 220, the transmission connection assembly 230 may be connected to the second transmission assembly 220, and the transmission connection assembly 230 may be pushed to be separated or connected to the first transmission assembly 210 by the clutch pushing assembly 240, thereby achieving connection and separation of the first transmission assembly 210 and the second transmission assembly 220.

The transmission connection assembly 230 serves as a connecting member of the first transmission assembly 210 and the second transmission assembly 220, and is capable of moving relative to the first transmission assembly 210, and the connection and disconnection of the first transmission assembly 210 and the second transmission assembly 220 are achieved by pushing the transmission connection assembly 230 to move to establish or release the connection relationship between the transmission connection assembly 230 and the first transmission assembly 210. The clutch pushing assembly 240 is used for performing a pushing operation of the drive connection assembly 230.

Referring to fig. 2, 3 and 10, in some embodiments, the clutch urging assembly 240 may include an urging sleeve 241 and a push rod 242; wherein, the pushing sleeve 241 is connected to the transmission connection assembly 230, and the pushing rod 242 is used for pushing the pushing sleeve 241, so as to push the transmission connection assembly 230, so that the transmission connection assembly 230 can smoothly perform connection and disconnection operations with the first transmission assembly 210.

The clutch mechanism 200 provided in the embodiment of the application is connected between a driving mechanism of a door opening and closing device and a door opening and closing executing mechanism connected with a door body, and is used for establishing or cutting off connection between the driving mechanism and the door opening and closing executing mechanism, so that the problem that the door opening and closing device of electrical equipment is easy to interfere with a manually operated door body is solved. Specifically, a first transmission assembly 210 and a second transmission assembly 220 are respectively provided, and are used for respectively connecting a driving mechanism and a door opening and closing mechanism, and a transmission connecting assembly 230 connected with the second transmission assembly 220 is provided and detachably connected to the first transmission assembly 210, so that the first transmission assembly 210 and the second transmission assembly 220 are detachably connected, and the clutch operation between the driving mechanism and the door opening and closing executing mechanism is convenient to implement; and the pushing sleeve 241 connected to the transmission connection assembly 230 is pushed by the pushing rod 242 to stably push the first transmission assembly 210 to be separated from or connected with the transmission connection assembly 230, so that the first transmission assembly 210 and the second transmission assembly 220 can be stably separated from or connected with each other in a working state, and the convenience, smoothness and safety of door operation of electrical equipment are improved.

Referring to fig. 7, in some embodiments, the drive connection assembly 230 may be configured as a drive connection member having a connection end 231 and a pushing end 232, and connected to the pushing sleeve 241 by the pushing end 232, so that the drive connection member is pushed to move by the pushing sleeve 241, so that the connection end 231 can be detachably connected to the first drive assembly 210, thereby connecting or disconnecting the first drive assembly 210.

In some embodiments, the transmission connection assembly 230 may be integrally disposed with the second transmission assembly 220 or fixed to the second transmission assembly 220, so that the second transmission assembly 220 moves integrally, thereby enabling connection and disconnection with the first transmission assembly 210, and simplifying the molding and assembling operations of the assembly.

In some embodiments, the connection end 231 may be movably disposed on the second transmission assembly 220 such that the connection end 231 can move relative to both the first transmission assembly 210 and the second transmission assembly 220, while the first transmission assembly 210 and the second transmission assembly 220 may be in a relatively stable position and posture, without having to create movement in a non-transmission operating direction, to facilitate a stable connection with upstream and downstream equipment, thereby maintaining a stable working state.

Referring to fig. 4 and fig. 5, in some embodiments, a clamping groove 211 may be formed on the first transmission component 210, and the connecting end 231 may be fastened by an adapter card, so that the operation that the connecting end 231 is separated from the clamping groove 211 can be smoothly implemented, and stability and reliability of the clutch operation are ensured.

Referring to fig. 5, in some embodiments, the first transmission assembly 210 may be configured as a first transmission gear 212 that transmits the driving force by way of a gear mesh transmission. In consideration of the operation mode of the gears rotating around their axes, the clamping grooves 211 may be provided on the axial end face of the first transmission gear 212, so that the connection state and disconnection state of the connection end 231 with the first transmission gear 212 are established, and the influence on the operation state of the rotation and tooth engagement thereof is reduced.

It should be noted that, for the working posture of the first transmission gear 212, the movement manner of the second transmission assembly 220 should be similar to the rotation manner of the first transmission gear 212 around a shaft, so as to realize synchronous rotation transmission.

Referring to fig. 6, in some embodiments, the second transmission assembly 220 may be provided as a second transmission gear 222, and the first transmission gear 212 and the second transmission gear 222 may be provided in a coaxial rotating configuration; the connection end 231 is disposed on the second transmission gear 222, and the connection end 231 is connected to the first transmission gear 212 by pushing the pushing end 232, so that the first transmission gear 212 and the second transmission gear 222 are connected and synchronously rotated, and a communicating driving force transmission path is established.

Referring to fig. 2, 3, 11, and 12, in some embodiments, in order to fulfill the rotation requirements of the first and second transmission gears 212 and 222, a rotation shaft structure may be provided on the base 900 to guide the first and second transmission gears 212 and 222 to be assembled and rotated. Specifically, a common rotating shaft 920 may be disposed on the base 900, and the first transmission gear 212 and the second transmission gear 222 are sleeved on the common rotating shaft 920 along the axial direction, so as to ensure the stable rotation function of the gears.

In some embodiments, the common rotation shaft 920 may be configured as a variable cross-section shaft, and a support column 921 and a rotation shaft column 922 sequentially arranged upward from the base 900, wherein the diameter of the support column 921 is greater than the diameter of a shaft hole formed in the second transmission gear 222, and the diameter of the rotation shaft column 922 may be adapted to the diameter of the shaft hole of the second transmission gear 222, so that the second transmission gear 222 may rest on the support column 921 and be sleeved on the rotation shaft column 922, so that the second transmission gear 222 is at a certain height from the base 900 and may stably rotate. The first transmission gear 212 may be stacked on the second transmission gear 222 and sleeved on the rotating shaft column 922 to realize rotation.

In some embodiments, the connection end 231 may be fixed on an axial end surface of the second transmission gear 222, and by pushing the pushing end 232, the second transmission gear 222 is pushed toward or away from the first transmission gear 212, so that the connection end 231 is engaged with the clamping groove 211 or disengaged from the clamping groove 211. The whole operation is simple, the forming of the structural member is relatively simple, and the assembly operation is simple and efficient.

Referring to fig. 6, in some embodiments, a hole 221 may be disposed on the second transmission gear 222, and the connection end 231 is movably embedded in the hole 221, so as to push the pushing end 232, so that the connection end 231 moves relative to the hole 221, approaches the first transmission gear 212, and is further snapped into the slot 211, and a connection between the first transmission gear 212 and the second transmission gear 222 is established. When the connection end 231 is disengaged from the clamping groove 211, the connection end 231 also moves relative to the clamping hole 221; during the process, the movement operation of the transmission connection member has a low influence on the positions and attitudes of the first transmission gear 212 and the second transmission gear 222, so that the positions and attitudes of the rotation of the transmission connection member are conveniently kept, and the working state and the operation reliability of the device are maintained.

In some embodiments, the clamping groove 211 may also be disposed to axially penetrate through the through hole of the first transmission gear 212, so that unnecessary disturbance caused by the connection end 231 directly pushing against the bottom of the clamping groove 211 can be avoided, and stability of the rotation process of the first transmission gear 212 is maintained.

In some embodiments, considering the rotation of the first transmission gear 212 and the second transmission gear 222, in order to increase the efficiency of the connection end 231 being snapped into the clamping groove 211, the connection end 231 may be provided with a plurality of connection arms 2311, and accordingly, the number of the clamping grooves 211 may be the same as or greater than the number of the connection arms 2311, so as to reduce the difficulty of the connection arms 2311 being snapped into the clamping grooves 211.

It should be noted that the rotation track of the card slot 211 should intersect with the movement track of the connection arm 2311, so that the connection arm 2311 may be inserted into the card slot 211.

In some embodiments, the distance from the connection arm 2311 to the rotation axis of the second transmission gear 222 and the distance from the clamping groove 211 to the rotation axis of the first transmission gear 212 should be consistent, so that the clamping groove 211 can be stably clamped and separated from the connection arm 2311 in the axis direction. Therefore, the pushing force to the pushing end 231 is along the axis direction of the rotating shaft of the second transmission gear 222, and the axis of the rotating shaft can be used as a reference during processing and assembling, so that the clutch pushing assembly 240 is convenient to set, assemble and push.

It should be noted that, the distance from the connection arm 2311 to the rotation axis of the second transmission gear 222 and the distance from the clamping groove 211 to the rotation axis of the first transmission gear 212 may also be inconsistent, only the rotation track of the clamping groove 211 should intersect with the movement track of the connection arm 2311, and when there are multiple connection arms 2311 and clamping grooves 211, the intervals between the multiple connection arms 2311 and the intervals between the multiple clamping grooves 211 are reasonably set to avoid the incapability of stable embedding.

In some embodiments, the plurality of connection arms 2311 may be equally spaced on a circular track, and correspondingly, the plurality of clamping grooves 211 may also be equally spaced on the circular track, so that a well-adapted position and spacing pattern can be formed, and clamping is facilitated.

It should be noted that, in order to increase the efficiency of the fitting between the connection arm 2311 and the card slot 211, the number of card slots 211 may be increased appropriately, and the number of card slots 211 may be set to be an integer multiple of the number of connection arms 2311, so that the efficiency of the fitting between the connection arm 2311 and the card slot 211 may be increased substantially when the card slots 211 and the connection arms are arranged at equal intervals.

In some embodiments, the plurality of connection arms 2311 may also be disposed on a plurality of circular tracks, and accordingly, an adapted number of the clamping grooves 211 should be disposed on the first transmission gear 212 with reference to the circular tracks to ensure stable engagement.

In some embodiments, the pushing end 232 of the transmission connection member is directly connected to the pushing sleeve 241, and the transmission connection member may be configured to rotate around the rotation axis of the second transmission gear 222 in consideration of the direction of pushing being perpendicular to the rotation directions of the second transmission gear 222 and the first transmission gear 212; the pushing end 232 is rotatably arranged on the pushing sleeve 241, so that the working state of rotation and axial movement of the transmission connecting piece can be considered.

The pushing end of the transmission connecting piece comprises an annular seat, and the annular seat is rotatably connected to the pushing sleeve 241, so that the working states of rotation and axial movement of the transmission connecting piece are realized. On the other hand, the pushing sleeve 241 only needs to axially push the annular seat, and the rotating state of the pushing sleeve is not needed to be considered, so that the structural arrangement and the installation configuration of the clutch pushing assembly 240 are greatly simplified.

It should be noted that, in order to reduce the interference of the moving operation of the transmission connection piece on the first transmission gear 212 and the second transmission gear 222, the ring seat may be disposed on a side of the second transmission gear 222 away from the first transmission gear 212, and the connection arm shaft 2311 passes through the second transmission gear 222 and may further move to be clamped into the clamping groove 211, so that the operation of pushing the ring seat may not extend between the two transmission gears, and may keep the two relatively stable.

Referring to fig. 8, in some embodiments, the pushing sleeve 241 is used as a pushing medium, a shaft sleeve portion 2412 and a pushing portion 2411 may be provided on the pushing sleeve 241, and the annular seat may be sleeved on the shaft sleeve portion 2412, so as to keep the rotatable state of the annular seat; accordingly, the pushing portion 2411 is configured to receive the pushing force of the pushing rod 242, so that the pushing sleeve 241 moves along the axis direction of the rotation shaft of the first transmission gear 212, thereby performing the pushing operation of the transmission connection member.

In some embodiments, the moving direction of the pushing sleeve 241 is the axial direction of the rotation shaft of the second transmission gear 222, and the moving direction of the pushing sleeve 241 is defined as the first direction for convenience of description. In order to reduce the overall thickness of the device and reduce the molding and assembly difficulty, the pushing sleeve 241 can be pushed by adopting a direction-changing pushing manner, that is, the pushing direction of the push rod 242 is not in the first direction, but a certain angle exists, so that the space occupation requirement in the first direction is reduced.

Referring to fig. 8, 9 and 10, a first pushing surface 2413 may be specifically provided on the pushing portion 2411, a second pushing surface 2421 may be provided on the push rod 242, the first pushing surface 2413 and the second pushing surface 2421 may contact and may slide relatively, and the first pushing surface 2413 may be disposed at an acute angle with respect to the first direction, so that the pushing sleeve 241 along the first direction may be implemented by pushing the first pushing surface 2413, and further, the transmission connection may be pushed toward the first transmission gear 222.

In some embodiments, to optimize the efficiency of the pushing operation, the angle between the first pushing surface 2413 and the first direction may be set in a range of 30 degrees to 60 degrees, for example, 30 degrees, 45 degrees, or 60 degrees.

In some embodiments, the angle between the pushing direction of the push rod 242 and the first direction can be controlled according to 90 degrees, so as to reduce the arrangement space required by the matching relationship between the push rod 242 and the transmission connecting piece as much as possible, and reduce the overall volume scale of the device.

Referring to fig. 9 and 10, in some embodiments, in order to balance the force applied by the pushing sleeve 241, the number of the first pushing surfaces 2413 may be two, and the corresponding pushing rods 242 are also provided with two pushing arms 2422, which correspondingly push the two first pushing surfaces 2413; thereby ensuring the stress uniformity of the pushing sleeve by a two-point force application mode. And two pushing arms 2422 can be connected to the same connecting part 2423, so that synchronous action is realized, the consistent force application is ensured, and the even stress of the pushing sleeve 241 is ensured. Correspondingly, the two pushing arms 2422 are respectively provided with a second pushing surface 2421.

In some embodiments, two first pushing surfaces 2413 may be disposed on opposite sides of the pushing sleeve 241, two pushing arms 2422 may be disposed in parallel, and a second pushing surface 2421 may be disposed on an end portion of the pushing arms 2422 away from the connecting portion 2423, so that the pushing operation may be performed by pushing the connecting portion 2423.

In some embodiments, the number of the first pushing surface 2413, the second pushing surface 2421 and the pushing arms 2422 may be more than two according to the specification of the pushing sleeve.

Referring to fig. 2 and 3, in order to perform the pushing operation of the push rod 242, a linear driver 243 may be connected to the push rod 242 to push the push rod 242 in the second direction or reset the push sleeve 241 to move in the first direction by the linear driver. When the linear actuator 243 is reset, the push rod 242 releases the push sleeve 241.

In some embodiments, the linear drive 243 may employ a linear drive assembly such as an electromagnetic push rod, a ball screw, or the like.

In some embodiments, the drive is provided as a gear motor, or a motor provided with a reduction gearbox, so that the output torque and the rotational speed can be reasonably controlled.

Referring to fig. 12, in some embodiments, in order to reduce impact vibrations between the push rod 242 and the base 900 and between the base 900 and the pushing sleeve 241, shock pads 244 may be provided between the base 900 and the push rod 242 and between the pushing sleeve 241 and the base 900.

In some embodiments, there is a tendency for circumferential rotation due to the axial friction of the annular seat against the ejection sleeve 241, which tends to affect engagement with the clutch ejection assembly 240. An anti-rotation mechanism 930 may be disposed on the base 900 and engaged in the pushing sleeve 241 along the first direction, for stopping the circumferential rotation of the pushing sleeve 241.

Referring to fig. 8, 12 and 13, in some embodiments, the anti-rotation mechanism 930 may include anti-rotation ribs 931, and the anti-rotation ribs 931 may slide relative to the pushing sleeve 241 in a first direction, so as to prevent the pushing sleeve 241 from rotating circumferentially and sliding in the first direction. Generally, the pushing sleeve 241 may be provided with an anti-rotation slot 2414 adapted to the anti-rotation rib 931, and the anti-rotation rib 931 may slide along a first direction.

In some embodiments, the number of the combined structures formed by the anti-rotation ribs 931 and the anti-rotation grooves 2414 may be plural, and at the same time, the intervals of the anti-rotation ribs 931 may be set to be unequal, so that the assembly positions of the pushing sleeve 241 and the anti-rotation ribs 931 are unique, and the stable and reliable alignment of the first pushing surface 2413 and the second pushing surface 2421 during the assembly is ensured, so that the situation of assembly dislocation is avoided, and an effective mechanical fool-proof effect is achieved.

In some embodiments, a raised barrel may be provided on the base 900, anti-rotation ribs 931 may be provided on the outer wall of the barrel, and a push sleeve 241 may be sleeved over the barrel to effect positioning and guiding. The cartridge may be specifically disposed coaxially with the common axis of rotation 920.

Referring to fig. 2, 3 and 4, in some embodiments, in order to achieve an immediate and efficient response when the connection end 231 is disconnected from the first transmission assembly 210, a separation assembly 250 may be provided to apply a force to the transmission connection assembly 230 to disengage from the first transmission assembly 210, so that after the push rod 242 is reset, leaving sufficient space for movement, the transmission connection assembly 230 is separated from the first transmission assembly 210 by the separation assembly 250.

In some embodiments, the disconnect assembly 250 may be coupled to the drive connection assembly 230 and the second drive assembly 220, respectively, to facilitate disconnection of the connection end 231 from the first drive assembly 210 by pushing the push end 232 to move relative to the second drive assembly 220.

Specifically, to promote responsive aging, the disconnect assembly may be configured as a resilient return 253 that continues to exert a force that urges the drive connection assembly 230 away from the first drive assembly 210. While the push rod 242 pushes the push sleeve 241 and the transmission connection assembly 230 to be connected to the first transmission assembly 210 and maintain the connected state, the force of the elastic restoring member 253 remains, but is limited by the strong action of the mechanical movements of the push rod 242, the push sleeve 241 and the transmission connection assembly 210, and the separation force is counteracted. When the push rod 242 changes the state of pushing the pushing sleeve 241, the pushing force will be gradually reduced after the reset, and the connection end 231 of the pushing transmission connection assembly 230 will be disconnected from the first transmission assembly 210 by the acting force of the elastic reset member 253, so that good response aging is achieved.

In some embodiments, the resilient return 253 can be provided as a spring disposed between the urging end 232 and the second drive assembly 220 that continuously exerts a resilient force that disengages the drive connection assembly 230 from the first drive assembly 210.

In some embodiments, the disconnect assembly 250 may be coupled to the second drive connection 220 and the mount 900, respectively, to guide movement of the drive connection assembly 230 relative to the mount 900 such that the connection end 231 of the drive connection assembly 230 is out of a coupled relationship with the first drive assembly 210.

Specifically, the separating assembly 250 may be configured as two first separating members 251 and second separating members 252 having magnetic force, and the transmission connection assembly 230 is moved relative to the base 900 by using magnetic attraction and magnetic repulsion forces of the two, so as to disconnect the transmission connection assembly 230 from the first transmission assembly 210.

In some embodiments, the first and second separating members 251, 252 may be configured as magnetically attractive metallic members and magnets to create a continuous separating force.

Referring to fig. 2, 3, 4 and 12, in some embodiments, the first transmission gear 212 and the second transmission gear 222 may be stopped on the common rotation shaft 920 by the stopping assembly 260, and the axial separation of the two may be limited, so as to ensure stability and reliability of the transmission structure.

Specifically, the stop member 260 may be configured as a connecting member 261 and a stop member 263, one end of the connecting member 261 is connected to the base 900 or a surface structure thereof, such as the common rotating shaft 920, the first transmission member 210 and the second transmission member 220 are disposed on the connecting member 261, and then the stop member 263 is fixed to the other end of the connecting member, so as to prevent the first transmission member 210 and the second transmission member 220 from being separated from the connecting member 261, and ensure the stability of the clutch transmission structure.

In some embodiments, the connector 261 and the stopper 263 may be integrally provided as a headed bolt with a bolt head as the stopper 263, or a separate stopper 263 may be provided to be sleeved on the screw, with the bolt head limiting the detachment of the stopper 263.

In some embodiments, a tightening through hole 923 may be provided at the top end of the common rotation shaft 920 along the axial direction thereof for locking the first and second transmission assemblies 210 and 220 in cooperation with the head bolt.

In some embodiments, the rod portion of the headed bolt may be provided with a smooth circumferential surface, and then the inner wall surface of the fastening through hole 923 is provided with a light source inner circumferential surface, so as to achieve low friction matching between the two, and avoid affecting the driving operation of the first driving assembly 210 and the second driving assembly 220. A locking member 262 may be provided at the other end of the fastening through hole to lock the headed bolt. The locking member 262 may alternatively be a bolt or nut.

In some embodiments, the connecting member 261 may be configured as a connecting shaft, one end of the connecting shaft is fixed on the base 900, and the first transmission assembly 210, the second transmission assembly 220 and the pushing sleeve 241 are sleeved on the connecting shaft to limit the detachment along the radial direction of the connecting shaft; the stop 263 is configured as a baffle, and the baffle is fixedly arranged at the other end of the connecting shaft, so that axial limiting along the connecting shaft is realized, and the first transmission assembly 210, the second transmission assembly 220 and the pushing sleeve 241 are stopped to be separated along the axial direction.

In some embodiments, the baffle may be integrally formed on the connecting shaft.

In some embodiments, the baffle is removably secured to the shaft, such as by a snap-fit hole or slot formed in the baffle, snap-fit into a narrow neck recess in the end of the shaft, or the like.

In some embodiments, the baffle may also be secured to the connecting shaft by a locking element, such as a latch, attached to the end of the connecting shaft.

When clutch control is executed, the push rod 242 is pushed to move towards the pushing sleeve 241 by the action of the linear driver 243, the second pushing surface 2421 arranged at the head end of the push rod 242 pushes the first pushing surface 2413, so that the pushing sleeve 241 moves along the first direction, the pushing connecting end 231 moves towards the first transmission gear 212 until the connecting end 231 is embedded into the clamping groove 211, so that the first transmission gear 212 and the second transmission gear 222 are connected into a whole, at this time, the linear driver 243 stays at the current position, and the pushing sleeve 241 is supported at the bottom 900 by the push rod 242, so that the transmission connecting piece is supported, and the transmission connecting state is maintained. When the disconnection is required, the linear driver 243 is reset, and the connection end 231 of the transmission connector is gradually separated from the clamping groove 211 under the action of the separation assembly 250 until the connection between the first transmission gear 212 and the second transmission gear 222 is disconnected, so that the power transmission path is interrupted.

Referring to fig. 1 and 13, in some embodiments, when the door 13 rotates to a preset opening position, the linkage gear 300 will not drive the door rotating mechanism 400 any more, and the driving force is stopped to be applied to the linkage gear 300 to maintain the rotation position thereof, so that the door 13 is closed and the driving relationship of the upstream driving device is maintained, interference with the manually operated door 13 is avoided, and the manual operation of the door 13 is facilitated. However, due to the fact that the door body 13 of the electrical equipment such as the refrigerator stores objects, or the refrigerator is placed in a skew mode and other factors cause the deviation of the weight center of the door body, the door body 13 is deflected automatically, the opening of the door body 13 cannot be maintained, the use is inconvenient, and even safety risks of collision operators can be caused.

Referring to fig. 13 and 14, in order to solve the problem that the door body 13 cannot maintain the opening degree when the door opening and closing device is stopped, a limiting structure 320 may be provided on the linkage gear 300, and a hover mechanism 600 may be provided on the base 900, and when the linkage gear 300 rotates to a position such that the limiting structure 320 is opposite to the hover mechanism 600, the hover mechanism 600 moves and then abuts against the limiting structure 320, so that the linkage gear 300 is locked on the base 900, so as to brake the door body rotating mechanism 400 to realize door body hover, and maintain the preset opening position.

That is, the limiting structure 320 follows the rotation of the linkage gear 300, and the hovering mechanism 600 is movable relative to the base 900 and is capable of changing its moving state in response to the rotation of the linkage gear 300, so that when the limiting structure 320 rotates to a position matching the opposing position of the hovering mechanism 600, the hovering mechanism 600 may abut against the clamping limiting structure 320, thereby locking the linkage gear 300, restricting its rotation, thereby braking the door rotating mechanism, to block the deflection of the door body 13, thereby maintaining the hovering of the door body 13 at a preset position.

It should be noted that, when the propping locking state of the hovering mechanism 600 and the limiting structure 320 is a reversible state and the external driving force applied to the linkage gear 300 is greater than the braking force between the hovering mechanism 600 and the limiting structure 320, the linkage gear breaks through the propping limiting effect, continues to rotate, and the linkage gear 300 releases the braking state, so that the revolving door mechanism 400 can be driven to rotate to close the door body 13, or the opening of the door body can be further enlarged.

Referring to fig. 14 and 16, in some embodiments, hover mechanism 600 can include hover member 610 and ejector 620; the hovering piece 610 is movably arranged on the base 900, continuously abuts against the linkage gear 300 and can be matched with the abutting clamping limiting structure 320, so that when the linkage gear 300 is in a state that the limiting structure 320 is opposite to the hovering piece 610, the hovering piece 610 can move towards the linkage gear 300 and abuts against the limiting structure 320 to lock the linkage gear 300 on the base 900, and braking of the linkage gear 300 is achieved; the ejector 620, as a driving element of the hovering element 610, continuously provides an ejector force to the hovering element, and pushes the hovering element 610 to the linkage gear 300 toward the linkage gear 300, so that the ejector 610 and the limit structure 320 can be ejected to realize the ejection braking of the linkage gear 300.

It should be noted that, under the action of the continuous pushing force, the hovering element 610 always keeps a pushing state with the linkage gear 300, and during the rotation of the linkage gear 300, the hovering element 610 slides on the linkage gear 300; only when the interlocking gear 300 rotates to a state where the stopper 320 is opposed to the hovering mechanism 600, the hovering element 610 moves and abuts against the stopper 320 by the pushing force, and the interlocking gear 300 is braked. The sustained pushing force enables the hovering element 610 to track the rotation position of the linkage gear 300, and the high aging response limit structure 320 is in place, i.e. after the limit structure 320 is aligned with the hovering mechanism 600, the hovering element 610 abuts against the clamping limit structure 320 immediately. A propping portion 611 may be provided on the hovering element 610 for contacting the propping limit structure 320, and may specifically achieve contact-propping against by propping into the interior of the limit structure 320.

Referring to fig. 15, in some embodiments, the limiting structure 320 may be configured as a groove on the peripheral surface of the linkage gear 300, and the propping portion 611 of the hovering member 610 may be configured to match the groove shape of the groove, and ensure that the propping portion 611 may be snapped into and out of the groove, so that the propping portion 611 is smoothly braked and released from braking.

It should be noted that, the notch of the groove may be provided with an engagement surface for smoothly engaging with the peripheral surface of the linkage gear 300, so that the abutting portion 611 can slide smoothly relative to the peripheral surface of the linkage gear 300 to enter the groove and be smoothly separated from the groove, thereby being capable of being smoothly and stably achieved when the braking is implemented and released.

In some embodiments, the groove profile of the groove may be configured in a C-shape or V-shape, and correspondingly, the abutment 611 is also configured in an embeddable circular arc or pointed tower configuration.

In order to facilitate the propping part 611 to be smoothly separated from the groove, a certain gap is reserved between the propping part 611 and the groove, namely, when the propping part 611 is clamped into the groove, a part of the area of the propping part 611 is propped against the inner wall of the groove, a gap is formed between the other part of the area and the groove wall, and under the premise of ensuring clamping, the propping part 611 can be smoothly separated when being subjected to a slightly larger pushing force.

Referring to fig. 14 and 18, in some embodiments, considering that the stability of the pushing force and the acting effect thereof has a positive effect on the braking performance of the propping portion 611, a pushing limiting groove 612 may be formed on the hovering member 610, and the pushing member 620 may be disposed in the pushing limiting groove 612, so that a relatively stable connection state between the pushing member 620 and the hovering member 610 is maintained, and the amplitude of the relative swing between the pushing member 620 and the hovering member 610 may be reduced to a certain extent, so that the stress direction and the moving direction of the propping portion 611 and the contact area between the propping portion 611 and the limiting structure 320 are maintained to be stable, and the braking effect is ensured. On the other hand, the ejector 620 may also be directly connected to the pushing portion 611, so as to concentrate the point of action of the pushing force on the pushing portion 611, thereby reducing the risk of deviation of the direction of the pushing force and unstable pushing effect due to the change of the posture of the hovering member 610 itself.

It should be noted that, the dimensions of the push limiting groove 612 and the push member 620 may be matched, so that the dimensions of the push limiting groove 612 may be slightly larger than the width of the push member 620, so as to reduce the space for relative swing and maintain the stability of the direction of the push force.

In some embodiments, the ejection limiting groove 612 may be configured as a blind hole along the ejection force direction and capable of accommodating the ejection member 620, and the bottom of the blind hole is disposed on the ejection portion 611 to form a circumferential limit on the ejection member 620, so as to limit the circumferential swing amplitude, reduce the risk of the hovering member 610 being sprung, and ensure the stability of the ejection position and posture.

In some embodiments, one end of the hovering element 610 is provided with a propping portion 611 for contacting the propping limiting structure 320, and the other end of the hovering element 610 may be further provided with a connecting portion for connecting the ejector 620, thereby facilitating the forming process of the hovering element and simplifying the process flow.

In some embodiments, the ejector 620 may be configured as an elastic member, so that a continuous and continuous ejector force is applied by elastic deformation of the elastic member, so as to ensure that the hovering element 610 responds to the change of the rotational position of the linkage gear 300 with a simple structure with high aging, and can quickly push into the limiting structure 320 when the limiting structure 320 is in place; meanwhile, the stability of the elastic deformation of the elastic member enables the thrust force applied to the hovering member 610 to be maintained in a stable state, so that the hovering state can be maintained stably, and the linkage gear 300 can be rotated and released from a braking state under the action of a relatively stable and controllable driving force, thereby realizing the stability and reliability of the hovering function of the door opening and closing device and the smoothly and smoothly realized performance.

In view of the fact that the deformation of the elastic member can be classified into compression deformation and tension deformation, the elastic member should be assembled in a relatively stable and linear deformation state as a principle.

When the elastic member provides elastic pushing force for the compressed state, the hovering element 610 may be disposed between the elastic member and the peripheral surface of the linkage gear 300, the elastic member may be compressively disposed between the base 900 and the hovering element 610, and the deformation restoring direction is maintained consistent with the pushing force direction, thereby converting the elastic pushing force of the elastic member into stable elastic pushing force output.

When the elastic member provides elastic pushing force for the stretched state, the elastic member can be stretched between the base 900 and the hovering member 610, and the deformation reset direction is kept consistent with the pushing force direction, so that the elastic tension of the elastic member is converted into stable elastic pushing force output.

In some embodiments, the elastic member is a spring, and may be specifically configured as a compression spring or a tension spring, thereby providing a stable pushing force through compression deformation or tension deformation. Specifically, the compression spring may be compressed between the hovering element and the base, or the tension spring may be connected in tension between the hovering element and the base.

Referring to fig. 17 and 18, a first end of the compression spring may be specifically abutted against the pushing portion 611, a boss portion 909 having a height substantially equal to that of the spring is provided on the base 900, and a second end of the spring may be abutted against the boss portion 909, maintaining a straight posture of the compression spring in an axial direction thereof, so as to form a stable and reliable pushing force.

The first end of the tension spring may be fixed to the main body of the ejector 610, or directly fixed to the pushing portion 611, and the second end of the tension spring may be fixed to a boss portion 909 provided on the base 900, and the tension spring may be kept flat with the plate surface of the base 900 as much as possible and in a straight posture, so as to form a stable and reliable ejector force.

In some embodiments, a supporting groove 908 may be further disposed below the boss 909 for limiting and supporting the spring, so as to ensure the stability of the propping position and avoid shaking.

In some embodiments, a spring member, such as a torsion spring, a reed, or the like, may be used, so long as the direction of movement of the resilient square body and the hovering element 610 substantially coincide, and will not be described herein.

In some embodiments, to maintain stability of the movement direction of the hovering element 610, excessive swing and vibration are limited, a hovering limit chute 906 may be provided on the base 900, and the hovering element is provided in the hovering limit chute 906, and the stability of the movement direction of the hovering element 610 is maintained through guiding and restraining actions of chute sidewalls, thereby ensuring reliability of braking performance.

Referring to fig. 17, in some embodiments, the hovering and limiting sliding groove 906 may be configured as two opposite limiting bosses 907, where the limiting bosses 907 have a certain length in the moving direction of the hovering element 610, and may satisfy the limitation in the sliding stroke. The tops of the two limiting bosses 907 can be connected with an upper limiting structure, so that the two limiting bosses can be limited to be separated from the base to a certain extent; corresponding upper limit structures can be further arranged on the upper cover of the base and are opposite to the hovering limit sliding groove 906, so that the upper limit purpose is achieved, the hovering piece 610 can always move in a stable direction, and reliability of braking performance is guaranteed.

In some embodiments, in order to maintain the stability of the moving direction of the hovering element 610, the unstable swing is limited, the hovering element may be provided in a rod shape, and the abutting part 611 is provided at an end thereof close to the linkage gear 300; namely, the long strip-shaped structural member with a certain length is matched with the hovering limiting chute 906 to realize stable sliding, and the length characteristics and the radial limiting effect of the hovering limiting chute 906 on the long strip-shaped structural member are utilized to reduce the swing amplitude to a certain extent. In general, the longer the length of the hover limit chute 906 and the rod-shaped hover member 610 in the direction of the pushing force, the better the performance of restricting the swing amplitude, the more stable the moving direction of the hover member 610.

Referring to fig. 21, in some embodiments, hover mechanism 600 may also be configured as a snap-in braking structure where hover connector 630 and hover limit slot 640 cooperate, hover connector 630 is connected to linkage gear 300, hover limit slot 640 is provided on base 900, and linkage gear 300 rotates to drive hover connector 630 to snap into hover limit slot 640 to brake revolving door mechanism 400 to rotate door body 13.

It is easy to understand that the linkage gear 300 rotates counterclockwise to hover engagement direction, and when the linkage gear 300 rotates, the hover connector 630 can smoothly engage into the hover limit groove 640, and connect the linkage gear 300 and the base 900 integrally, thereby realizing braking of the linkage gear 300 and the revolving door mechanism 400 connected thereto.

It should be noted that, the hovering limiting grooves 640 should be disposed in a position matching with the hovering connection 630, so that they can be locked in a counterclockwise direction but are relatively difficult to be disengaged in a counterclockwise direction, but are easy to be disengaged in a clockwise direction, so as to achieve stable and reliable locking and disengagement.

Referring to fig. 1, in some embodiments, the revolving door mechanism 400 may include a front link 410 and a rear link 420 with hinged ends, where the other end of the front link 410 is rotatably connected to the door body 13 at a first connection point, the front link 410 is disposed between the bottom surface of the linkage gear 300 and the base 900, the rear link 420 is rotatably disposed in a mounting groove formed on the top surface of the linkage gear 300, and the other end of the rear link is coaxially and rotatably connected to the base 900 with the linkage gear 300 at the rotation center of the linkage gear 300, i.e., the rear link 420 may rotate with the linkage gear 300, and push and pull the front link 410 under the pushing of a first abutting surface and a second abutting surface formed on the groove wall of the mounting groove, so as to rotate the door body 13, thereby realizing the door opening and closing operation.

It should be noted that, the front connecting rod 410 and the rear connecting rod 420 are respectively disposed at two sides of the linkage gear 300, and the thickness space reserved on the base 900 is rotatably supported by the linkage gear 300, so that the upper space of the linkage gear 300 is not occupied, and the space requirement of the revolving door mechanism 400 in the thickness direction is reduced to a certain extent; and the rear link 420 is sunk in the installation groove, so that the overall assembly height of the swing door mechanism 400 and the linkage gear 300 is not excessively higher than the height of the linkage gear 300, and even is even, and the thickness of the door opening and closing device 11 can be integrally reduced through the arrangement of the side sides of the front link 410 and the rear link 420 and the application of the installation groove.

In some embodiments, the front link 410 and the rear link 420 may also be disposed in the lower space of the linkage gear 300 above the base, and the mounting groove may be disposed on the bottom surface of the linkage gear, so that the overall thickness of the door opening and closing device 11 may be reduced as a whole.

Referring to fig. 1, in some embodiments, the revolving door mechanism 400, the driving mechanism 100 and the clutch pushing component 240 may be disposed on the same side of the connecting line between the clutch mechanism 200 and the linkage gear 300, so as to improve the compactness of the overall structure to a certain extent, so that the overall transverse arrangement width may be relatively reduced, and thus, the miniaturized formation of the door opening and closing device 11 is realized, and the door opening and closing device has good installation compatibility, is convenient for being installed on a refrigerator, and reduces interference between the refrigerator and the surrounding environment where the refrigerator is located.

In some embodiments, the door 13 and the box 12 are rotatably connected to a first connection point, the front link 410 and the door 13 are connected to a second connection point, the rear link 420 and the front link 410 are rotatably connected to a third connection point, the linkage gear 300 has a rotation center, and the second connection point and the third connection point are respectively located at two sides of a connection line of the first connection point and the rotation center, so that force application points of the two links are respectively located at two sides of the connection line, when the two links are deformed under stress, deformation directions or trends of the two links will be in two opposite directions of the rod body, so as to avoid deflecting to the same side, and balance is maintained at a stable interface, thereby obtaining a stable force application structure form, avoiding excessive deformation and affecting the overall form stability of the door opening and closing device.

In some embodiments, the included angle between the first connection line between the output gear 120 and the first transmission gear 212 and the second connection line between the second transmission gear 222 and the linkage gear 300 can be controlled to be 90-120 degrees, so that the driving mechanism 100, the revolving door mechanism 400 and the clutch pushing assembly 240 arranged on the same side have enough installation space.

The revolving door mechanism 400 may be disposed in an area surrounded by the first connection line, the second connection line and the door body.

In some embodiments, since the whole front link 410 and part of the rear link 420 idle, and do not directly contact or connect with other structures, the corresponding base structure is not disposed in the area swept by the whole front link 410, so that the front link 410 is disposed outside the base 900 area, on one hand, the material consumption of the base 900 is reduced, and on the other hand, the fixing structure of the base 900 can be separated from the functional parts such as the routing area in the edge area of the refrigerator 10 to a certain extent, so as to achieve good installation compatibility and environmental adaptability.

In some embodiments, the driver 110 may be fixedly disposed on the base 900, and the output gear 120 is disposed above the driver 110, so that the first transmission gear 212 and the output gear 120 may be disposed at the same height side by side, and correspondingly, the second transmission gear 222 and the linkage gear 300 are disposed at the same height side by side, and the second transmission gear 222 is disposed below the first transmission gear 212, so that the arrangement cooperation of the thickness space and the width space is fully utilized as a whole, and the overall thickness and the width are at relatively low levels, so as to facilitate miniaturized formation of the door opening and closing device.

Referring to fig. 1, in some embodiments, the door opening and closing device is further provided with a door pushing mechanism 500 connected with the linkage gear 300, wherein the door body 13 is pushed in the rotation process of the linkage gear 300, the adsorption force between the door body 13 and the box body 12 is broken, the door body 13 is pushed open, and the door turning difficulty of the door turning mechanism 400 is reduced; wherein, hover mechanism 600, top door mechanism 500 and revolving door mechanism 400 are located the circumference side of linkage gear 300, and hover mechanism 600 and revolving door mechanism 400 are located top door mechanism 500 both sides to rationally distribute, reduce space occupation and the risk of mutual interference.

Referring to fig. 19, in some embodiments, the door lifting mechanism 500 may be a door lifting portion 330 disposed on the linkage gear 300, where the door lifting portion 330 can lift the door body 13 under the condition that the driving mechanism 100 drives the linkage gear 300 to rotate through the clutch mechanism 200.

Referring to fig. 20, in some embodiments, the door pushing mechanism 500 may also be configured to be movably disposed on the base 900 with a top door member 510 and an abutment 520 disposed on a peripheral surface of the linkage gear 300, where the driving mechanism 100 drives the clutch mechanism 200 to rotate the linkage gear 300, the abutment 520 formed on the linkage gear 300 can move relative to the base 900 along with the rotation of the linkage gear 300 to push the top door member 510 against the door body 13, so that the top door member 510 is guided to gradually push the door body 13 until the door body 13 is opened by the curved surface of the abutment having a fluctuation in a radial direction. It should be noted that, a spring leaf, or another elastic restoring member may be disposed on the base 900 or an upper cover connected to the base 900, so as to elastically push the top door 510 against the supporting portion 520 of the linkage gear 300, thereby realizing stable top door and restoring operation.

The door body is rotated by the cooperation of the door rotating mechanism and the driving mechanism, so that the door is automatically opened and closed; the linkage gear is used for forward and backward rotation to drive the door rotating mechanism to act to push and pull the door body, so that the door is opened and closed; the linkage gear is provided with a limiting structure, the linkage gear is used as a functional structure for braking, the linkage gear is arranged on the base in a sliding manner to hover the mechanism, the rotating position of the linkage gear is tracked, when the linkage gear rotates to a state that the limiting structure is opposite to the hovering mechanism, the linkage gear is braked by propping against the limiting structure through the hovering mechanism, so that a revolving door mechanism connected with the linkage gear is braked, the door body is hovered, the stability of the opening degree of the door body is ensured, the door is convenient to use while the door opening difficulty is reduced, and the collision risk is reduced.

Referring to fig. 20, in some embodiments, in order to well grasp the rotation condition of the linkage gear 300, an angle acquisition unit 800 may be provided for real-time monitoring so as to be used as a control parameter.

The angle acquisition unit 800 may employ various angle sensors for measuring deflection angles, and may measure a relative rotation angle of the linkage gear 300 with respect to the base 900 or an upper cover thereof. The angle acquisition unit 800 may be generally configured as a combined detection assembly of a permanent magnet marker and a PCB sensing circuit, one of which is disposed on an upper cover mated with the base 900, and the other of which is disposed on the linkage gear 300.

In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise" indicate or positional relationships are based on the positional relationships shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

It should be noted that all the directional indicators in the embodiments of the present application are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

In the present application, unless explicitly specified and limited otherwise, the terms "coupled," "secured," and the like are to be construed broadly, and for example, "secured" may be either permanently attached or removably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In addition, descriptions such as those related to "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated in this application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A refrigerator, comprising: the door opening and closing device is connected to the box body and the door body;

the door opening and closing device includes:

a base;

2. The refrigerator of claim 1, wherein the swing door mechanism comprises: the front connecting rod is connected with the door body, the front connecting rod is arranged between the bottom surface of the linkage gear and the base, and the rear connecting rod is arranged in a deflectable mounting groove formed in the top surface of the linkage gear.

3. The refrigerator of claim 1, wherein the swing door mechanism comprises: the front connecting rod and the rear connecting rod are hinged at the end parts, the front connecting rod is connected with the door body, the rear connecting rod is arranged in a mounting groove formed in the bottom surface of the linkage gear in a deflectable mode, and the front connecting rod and the rear connecting rod are arranged between the bottom surface of the linkage gear and the base.

4. The refrigerator as claimed in claim 2 or 3, wherein the swing door mechanism, the driving mechanism and the clutch pushing assembly are located on the same side of the clutch mechanism as the linkage gear.

5. The refrigerator as claimed in claim 4, wherein the door body and the case body are rotatably connected to a first connection point, the front link and the door body are connected to a second connection point, the rear link and the front link are rotatably connected to a third connection point, the link gear has a rotation center, and the second connection point and the third connection point are respectively located at both sides of a connection line of the first connection point and the rotation center.

6. The refrigerator as claimed in claim 1, wherein the door opening and closing apparatus further includes a door pushing mechanism, the door pushing mechanism is a door pushing member movably disposed on the base, and the supporting portion provided on the linkage gear can rotate along with the linkage gear and push the door pushing member to move relative to the base under the condition that the driving mechanism drives the clutch mechanism to rotate the linkage gear, so that the door pushing member pushes the door body open.

7. The refrigerator as claimed in claim 1, wherein the door opening and closing apparatus further comprises a top door mechanism including a top door portion provided at the link gear, the top door portion being capable of pushing the door body open under the condition that the driving mechanism rotates the link gear through the clutch mechanism.

8. The refrigerator as claimed in any one of claims 1 to 7, wherein the driving structure includes a second driving assembly and a driving connection assembly connected to the second driving assembly, and the driving connection assembly is pushed to be connected to or separated from the first driving assembly by the clutch pushing assembly.

9. The refrigerator of claim 8, wherein the first transmission assembly is a first transmission gear, the second transmission assembly is a second transmission gear, the first transmission gear and the second transmission gear are coaxially and rotatably arranged on the base, the first transmission gear is meshed with the output gear, and the second transmission gear is meshed with the linkage gear.

10. The refrigerator of claim 8, wherein the driver is fixedly arranged on the base and is positioned between the output gear and the base, the first transmission gear is arranged side by side with the output gear, the second transmission gear is arranged side by side with the linkage gear, and the second transmission gear is positioned below the first transmission gear.

11. The refrigerator as claimed in claim 10, wherein an angle between a first line connecting the output gear and the first transmission gear and a second line connecting the second transmission gear and the linkage gear ranges from 90 degrees to 120 degrees.

12. The refrigerator as claimed in claim 11, wherein the swing door mechanism is disposed in an area surrounded by the first wire, the second wire, and the door body.

13. The refrigerator of claim 8, wherein the clutch mechanism further comprises a disengagement assembly coupled to the drive connection assembly and the second drive assembly, respectively, to provide a force that drives the drive connection assembly apart from the first drive assembly.

14. The refrigerator of claim 13, wherein the separation assembly comprises: and the two ends of the elastic reset piece are respectively connected with the transmission connecting assembly and the second transmission assembly so as to provide elastic acting force for driving the connecting end to be separated from the first transmission assembly.

15. The refrigerator as claimed in claim 9, wherein the driving connection assembly includes a driving connection member, the driving connection member is provided with a connection end and a pushing end, the pushing end is movably embedded in a clamping hole formed on the second driving gear, and the pushing end is pushed by the clutch pushing assembly to be connected with or separated from a clamping groove formed on the first driving gear.

16. The refrigerator as claimed in any one of claims 9 to 15, wherein the door opening and closing apparatus further includes a separation assembly coupled to the driving structure and the base to provide a force for driving the driving structure to be separated from the first driving assembly.

17. The refrigerator as claimed in claim 16, wherein the separating assembly includes a first separating member and a second separating member that maintain a magnetic interaction, the first separating member being coupled to the drive structure and the second separating member being coupled to the base to provide a magnetic force that drives the connecting end apart from the first drive assembly.

18. The refrigerator of claim 1, wherein the clutch mechanism further comprises a stopping assembly, the stopping assembly comprises a connecting piece and a stopping piece, one end of the connecting piece is fixed on the base, the first transmission assembly and the transmission structure are arranged on the connecting piece, and the stopping piece is fixed on the other end of the connecting piece to stop the first transmission assembly and the transmission structure.

19. The refrigerator as claimed in any one of claims 1 to 7, wherein the door opening and closing apparatus further comprises a hovering mechanism movably provided on the base, the linkage gear is provided with a limit structure, and the hovering mechanism moves to abut against the limit structure to brake the swing door mechanism to rotate the door body when the linkage gear rotates to a state where the limit structure is opposite to the hovering mechanism.

20. The refrigerator as claimed in any one of claims 1 to 7, wherein the door opening and closing device further comprises a hovering mechanism including a hovering connecting piece and a hovering limit groove, the hovering connecting piece is connected to the linkage gear, the hovering limit groove is provided on the base, and the linkage gear rotates to drive the hovering connecting piece to be clamped with the hovering limit groove so as to brake the revolving door mechanism to rotate the door body.

21. The refrigerator of claim 19 or 20, wherein the hover mechanism is connected between a linkage gear and the base, the hover mechanism braking the linkage gear on the base when the linkage gear rotates to a preset position;

22. The refrigerator as claimed in claim 1, wherein the door opening and closing device further comprises an angle acquisition unit including a marker and a sensing circuit disposed opposite to the marker, one of the marker and the sensing circuit being disposed on an upper cover cooperating with the base, the other being disposed on the linkage gear.