A door opening and closing device and an electric appliance

Abstract

The application belongs to the technical field of electrical appliances, and particularly relates to a switch door device and an electrical appliance. The switch door device comprises a top door mechanism and a rotating door mechanism driven by the same driving mechanism. The driving mechanism comprises a driver, a first transmission assembly, a second transmission assembly connected with the driver and simultaneously separably connected with the first transmission assembly, a clutching and pushing assembly comprising a pushing sleeve arranged on the second transmission assembly and a pushing rod used for pushing the pushing sleeve, the pushing sleeve is pushed by the pushing rod to separate or connect the second transmission assembly with the first transmission assembly, and a linkage gear connected with the first transmission assembly and simultaneously connected with the top door mechanism and the rotating door mechanism. The switch door device and the electrical appliance provided by the application can improve the convenience and safety of switching doors.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electrical appliances, and particularly relates to a door opening and closing device and an electrical appliance. BACKGROUND

[0002] With the improvement of living standards, electrical appliances such as refrigerators, dishwashers and disinfection cabinets are widely used in people's lives. In order to maintain the sealing performance of the above-mentioned electrical appliances, an adsorption structure or a negative pressure is usually arranged between the cabinet and the door body to stably fix the door body on the cabinet. Although the related performance of the electrical appliance is improved, the difficulty of opening the door body is also increased to a certain extent, and usually a large force is needed to pull it open, which is inconvenient to use. Especially for the elderly, children, patients and other groups, not only is the operation difficult, but there is also a certain safety risk. Since the adsorption force and the negative pressure force disappear after opening, the rotating speed of the door body is relatively instantaneously greatly increased, which is easy to collide with the operator or the vibration and falling of the stored objects in the cabinet. SUMMARY

[0003] To solve the above technical problems, the present application provides a door opening and closing device and an electrical appliance, which aims to improve the convenience and safety of opening the door of the electrical appliance to a certain extent.

[0004] The technical scheme of the present application is as follows:

[0005] On the one hand, the present application provides a door opening and closing device, which comprises a top door mechanism and a rotating door mechanism driven by the same driving mechanism, and the driving mechanism comprises:

[0006] a driver;

[0007] a first transmission assembly;

[0008] a second transmission assembly connected with the driver and simultaneously separably connected with the first transmission assembly;

[0009] a clutching and pushing assembly comprising a pushing sleeve arranged on the second transmission assembly and a push rod for pushing the pushing sleeve, the second transmission assembly being separated from or connected with the first transmission assembly by pushing the pushing sleeve through the push rod;

[0010] a linkage gear connected with the first transmission assembly and simultaneously connected with the top door mechanism and the rotating door mechanism.

[0011] In some embodiments, the second transmission assembly comprises a first transmission member, and the first transmission member comprises a connecting end separably connected with the first transmission assembly and a pushing end embedded in the pushing sleeve.

[0012] In some embodiments, the first transmission assembly is provided with a clamping groove, and the connecting end is detachably clamped in the clamping groove.

[0013] In some embodiments, the clamping groove is provided with internal teeth on the groove wall surface, and the connecting end is provided with external teeth on the outer peripheral surface, which are engageable with the internal teeth.

[0014] In some embodiments, the first transmission assembly is a first transmission gear engaged with a linkage gear, and the clamping groove is formed in the axial end of the first transmission gear.

[0015] In some embodiments, the outer peripheral surface of the pushing end is provided with a plurality of limit bosses arranged at intervals, which are slidingly abutted on the inner surface of the pushing sleeve.

[0016] In some embodiments, the first transmission member further comprises a supporting flange arranged between the connecting end and the pushing end, which is rested on the end surface of the pushing sleeve.

[0017] In some embodiments, the second transmission assembly comprises a first transmission member and a second transmission member.

[0018] The first transmission member is detachably connected with the first transmission assembly, and the first transmission member is sleeved on the second transmission member and rotatable with the second transmission member.

[0019] In some embodiments, the second transmission assembly further comprises a transmission shaft, and the second transmission member and the first transmission assembly are both sleeved on the transmission shaft.

[0020] In some embodiments, the inner surface of the first transmission member is provided with an axial through groove, and the outer surface of the second transmission member is provided with a clamping block, which is axially and slidingly embedded in the axial through groove when the first transmission member is sleeved on the second transmission member.

[0021] In some embodiments, the pushing sleeve pushes the second transmission assembly in a first direction, the pushing sleeve is provided with a first pushing surface, and the push rod is provided with a second pushing surface in contact with the first pushing surface, wherein the first direction forms an acute angle with the first pushing surface.

[0022] In some embodiments, the pushing sleeve is provided with two first pushing surfaces arranged on opposite sides of the pushing sleeve, and the push rod comprises two push arms arranged side by side and a connecting portion connecting the two push arms, the second pushing surface is arranged on the end portion of the two push arms away from the connecting portion, and the two second pushing surfaces are respectively in contact with the two first pushing surfaces.

[0023] In some embodiments, the pushing sleeve pushes the second transmission assembly in a first direction;

[0024] Two first pushing grooves are formed on the pushing sleeve, and the two first pushing grooves are arranged on opposite sides of the pushing sleeve. First pushing surfaces are arranged on the groove walls of the two first pushing grooves, respectively.

[0025] The pushing rod comprises two parallel pushing arms and a connecting portion connecting the two pushing arms. Second pushing surfaces are arranged on the ends of the two pushing arms away from the connecting portion. The two second pushing surfaces are in contact with the two first pushing surfaces, respectively.

[0026] In some embodiments, a limiting baffle is arranged on the side of each of the two pushing arms away from the other pushing arm. The two limiting baffles are arranged on opposite sides of the pushing sleeve.

[0027] In some embodiments, the clutching and pushing assembly further comprises a linear driver connected with the pushing rod to drive the pushing rod to push the pushing sleeve.

[0028] In some embodiments, the linkage gear further comprises:

[0029] A body is rotatably arranged on a base;

[0030] A first pushing portion is arranged on the body to push the rotating door mechanism to rotate when the body rotates in a forward direction, so as to open a door body.

[0031] A second pushing portion is arranged on the body to push the rotating door mechanism to rotate when the body rotates in a reverse direction, so as to close the door body.

[0032] In some embodiments, the rotating door mechanism rotates by a first angle between the first pushing portion and the second pushing portion. The body is coaxially arranged on the base in a rotatable manner.

[0033] In some embodiments, the rotating door mechanism comprises a first tooth portion. The linkage gear further comprises a third pushing portion provided with a second tooth portion in meshing transmission with the first tooth portion. When the body rotates in the forward direction, the third pushing portion drives the rotating door mechanism to push the door body.

[0034] In some embodiments, a rotation limiting groove is formed on the body. The body is coaxially arranged on the base in a rotatable manner. The rotating door mechanism can rotate in the rotation limiting groove. The first pushing portion and the second pushing portion are groove walls of the rotation limiting groove in the radial direction of the linkage gear.

[0035] In some embodiments, the rotating door mechanism comprises a transmission member and a rotating door member, a first end of the rotating door member is rotatably arranged on the door body, a second end of the rotating door member is rotatably connected with a first end of the transmission member, a second end of the transmission member is rotatably arranged on the base; the linkage gear can drive the transmission member to rotate to drive the rotating door member to rotate the door body.

[0036] In some embodiments, the top door mechanism comprises:

[0037] a linkage member, a first end of the linkage member is rotatably arranged on the base, a second end of the linkage member is connected with the linkage gear; and

[0038] a top door member, a first end of the top door member is rotatably connected with the linkage member, a second end of the top door member is used for pushing the door body;

[0039] wherein the linkage gear drives the linkage member to rotate, and drives the top door member to push the door body.

[0040] In some embodiments, the top door mechanism further comprises:

[0041] a resilient limiting member, which is connected with the linkage member and the base respectively, and maintains the linkage member at a preset angle.

[0042] In some embodiments, a waist-shaped hole is formed on one of the top door member and the linkage member, and a pin shaft is arranged on the other, the pin shaft is rotatably arranged in the waist-shaped hole.

[0043] In some embodiments, the top door mechanism is rotatably arranged on the base, and the top door mechanism comprises: a first tooth portion engaged with the linkage gear, and a top door portion used for pushing the door body, the linkage gear drives the top door mechanism to rotate relative to the base through the first tooth portion, and drives the top door portion to push the door body.

[0044] In some embodiments, the top door mechanism further comprises:

[0045] a limiting member arranged on the base, the top door mechanism abuts against the limiting member when the top door mechanism rotates to a preset angle relative to the base; and

[0046] a tensioning member, two ends of which are respectively connected with the top door mechanism and the base, and the top door mechanism is maintained at the preset angle.

[0047] In some embodiments, the top door mechanism is in the shape of a cam, and the first tooth portion and the top door portion are located on the rim of the cam.

[0048] In another aspect, the application also provides an electric appliance, comprising a cabinet, a door body rotatably arranged on the cabinet, and the door opening and closing device as described above, wherein the base is arranged on the cabinet.

[0049] In some embodiments, the electric appliance is one of a refrigerator, a sterilizer, and a dishwasher.

[0050] The application has at least the following beneficial effects:

[0051] The door opening and closing device and the electric appliance provided by the application realize automatic door opening and closing operation and rotation operation through the top door mechanism and the rotation door mechanism driven by the driving mechanism, thereby improving the convenience and safety of door opening operation. The door body can be pushed by the top door mechanism, and the door body is pushed to a set angle by the force accumulated by breaking through the door opening resistance, thereby greatly reducing the resistance of the rotation door mechanism and improving the automatic door opening speed. Further, the first transmission assembly and the second transmission assembly are arranged in a separable connection, and the first transmission assembly and the second transmission assembly are actively connected and disconnected under the action of the clutch top pushing assembly. The second transmission assembly is connected with the driving mechanism, and the first transmission assembly is connected with the top door mechanism and the rotation door mechanism, thereby realizing the connection and disconnection between the driving mechanism and the execution mechanism, effectively avoiding the interference between the automatic door opening and closing operation and the manual door opening and closing operation, and realizing the protection of the driving mechanism, the top door mechanism, and the rotation door mechanism through the flexible and controllable connection and disconnection function. BRIEF DESCRIPTION OF DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0053] Figure 1 The structure diagram of the door opening and closing device provided by the embodiment of the application is shown in the figure.

[0054] Figure 2 The exploded view of the connection and disconnection device of the door opening and closing device in the figure is shown in the figure. Figure 1

[0055] Figure 3 The top view of the assembled state of the connection and disconnection device of the door opening and closing device in the figure is shown in the figure. Figure 1

[0056] Figure 4 The front view of the assembled state of the connection and disconnection device of the door opening and closing device in the figure is shown in the figure. Figure 1

[0057] Figure 5 The A-A sectional view of the figure is shown in the figure. Figure 3

[0058] Figure 6 ​​​​Fig. 1 is a perspective view of a switch door device according to the present application; Figure 1 Fig. 2 is a top view of a first transmission assembly of the switch door device in Fig. 1;

[0059] Figure 7 Fig. 3 is a front view of the first transmission assembly of the switch door device in Fig. 1; Figure 1

[0060] Figure 8 Fig. 4 is a sectional view of A-A of the switch door device in Fig. 1; Figure 7

[0061] Figure 9 Fig. 5 is a bottom view of the first transmission assembly of the switch door device in Fig. 1; Figure 1

[0062] Figure 10 Fig. 6 is a structural schematic view of a rotating door mechanism of the switch door device in Fig. 1; Figure 1

[0063] Figure 11 Fig. 7 is a schematic view of the arrangement position of the rotating door mechanism of the switch door device in Fig. 1; Figure 1

[0064] Figure 12 Fig. 8 is a structural schematic view of a top door mechanism of the switch door device in Fig. 1; Figure 1

[0065] Figure 13 Fig. 9 is another structural schematic view of the top door mechanism of the switch door device in Fig. 1; Figure 1

[0066] Figure 14 Fig. 10 is a schematic view of the arrangement of a driving member and a linkage gear of the switch door device in Fig. 1; Figure 1

[0067] Figure 15 Fig. 11 is a schematic view of the arrangement of a linkage member and the linkage gear of the switch door device in Fig. 1; Figure 1

[0068] Figure 16 Fig. 12 is a top view of the linkage gear of the switch door device in Fig. 1; Figure 1

[0069] Figure 17 Fig. 13 is a front view of the linkage gear of the switch door device in Fig. 1; Figure 1

[0070] Figure 18 Fig. 14 is a bottom view of the linkage gear of the switch door device in Fig. 1; Figure 1

[0071] Figure 19 Fig. 15 is a schematic view of a base of the switch door device in Fig. 1; Figure 1

[0072] Figure 20 Fig. 16 is a schematic view of a base of the switch door device in Fig. 1;​​​​​​​​​​​​​Figure 1 Assembly view of the switch door device in

[0073] Figure 21 Assembly view of the switch door device in Figure 1 Assembly view of the switch door device in

[0074] Figure 22 Assembly view of the switch door device in Figure 1 Assembly view of the switch door device in

[0075] Figure 23 Assembly view of the switch door device in Figure 1 Assembly view of the switch door device in

[0076] Figure 24 Assembly view of the switch door device in Figure 1 Assembly view of the switch door device in

[0077] Figure 25 Assembly view of the switch door device in Figure 24 Assembly view of the switch door device in

[0078] Figure 26 Assembly view of the switch door device in Figure 1 Assembly view of the switch door device in

[0079] Figure 27 Assembly view of the switch door device in Assembly view of the switch door device in

[0080] Assembly view of the switch door device in Figure 28 Assembly view of the switch door device in Figure 1 Assembly view of the switch door device in

[0081] Figure 29 Assembly view of the switch door device in Figure 1 Assembly view of the switch door device in

[0082] Figure 30 Assembly view of the switch door device in Figure 1 Assembly view of the switch door device in

[0083] In the drawings:

[0084] 100 - driving mechanism, 110 - driver, 120 - linkage gear, 121 - third tooth part, 122 - third pushing part, 1221 - second tooth part, 123 - rotation limiting slot, 1231 - first pushing part, 1232 - second pushing part, 124 - reset spring accommodating slot, 125 - second fixed seat;

[0085] Switch door mechanism 200, 210 - driving part, 211 - coaxial rotating shaft, 212 - first fixed seat, 220 - switch door part, 230 - hinged seat, 240 - reset spring;

[0086] 300 - top door mechanism, 310 - linkage, 311 - linkage pivot hole, 312 - reduced-thickness sink, 313 - first tooth portion, 314 - third fixed seat, 320 - top door piece, 322 - waist-shaped hole, 330 - pushing seat, 340 - shock pad, 350 - linkage pivot shaft, 360 - pin shaft, 370 - elastic limiting piece, 380 - top door piece, 381 - fourth tooth portion, 382 - top door portion, 383 - reinforcing rib;

[0087] 400 - clutch device, 410 - first transmission assembly, 411 - clamping groove, 412 - central shaft hole, 413 - inner tooth, 414 - extension cylinder, 420 - second transmission assembly, 421 - first transmission piece, 4211 - connecting end, 4212 - pushing end, 4213 - support flange, 4214 - first transmission piece inner surface, 4215 - outer tooth, 4216 - limiting boss, 4217 - axial through slot, 422 - second transmission piece, 4221 - second transmission piece outer surface, 4222 - clamping block, 4223 - transmission shaft hole, 4224 - first limiting surface, 423 - transmission shaft, 4231 - second limiting surface, 430 - clutch pushing assembly, 431 - pushing sleeve, 4311 - first pushing surface, 4312 - first pushing groove, 4313 - sink, 432 - pushing rod, 4321 - second pushing surface, 4322 - limiting baffle, 4323 - pushing arm, 4324 - connecting portion, 433 - linear driver;

[0088] 600 - base, 610 - drive motor fixing groove, 620 - second stop piece, 621 - stop profile, 630 - first stop piece, 631 - elastic piece accommodating groove, 632 - guide groove, 633 - linkage first stop surface, 634 - linkage second stop surface, 635 - fourth fixed seat, 641 - third stop piece, 642 - fourth stop piece, 650 - coaxial rotating shaft seat;

[0089] 910 - box body, 920 - door body. DETAILED DESCRIPTION

[0090] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0091] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative positional relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0092] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplification, the elements of the particular examples are described in the following disclosure. Of course, they are merely examples and are not intended to limit the present application. Furthermore, the present application can repeat the reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and / or configurations discussed. In addition, the present application provides various specific examples of processes and materials, but one of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0093] The present application will be described below with reference to the accompanying drawings and specific embodiments:

[0094] The present embodiment provides a door opening and closing device, which aims to improve the efficiency and convenience of door opening and closing operation to some extent, and at the same time, to solve the problem that the initial stage of manual opening of the refrigerator door has large resistance, and the subsequent stage rotates too fast, and the door opening and closing process is not smooth.

[0095] The door opening and closing device related to the present embodiment is used to assemble to an electrical appliance device configured with a door body that can be deflected to open and close, and the opening and closing of the door body is driven by the action of the door opening and closing device. The device can be a refrigerator, a sterilizer, a dishwasher, etc.

[0096] Referring to Figure 1 , specifically, the electrical appliance device includes a box body 910 and a door body 920 rotatably arranged on the box body 910, and the box body 910 is provided with a taking opening, and the door body 920 is rotated on the box body 910 to close or open the taking opening of the box body 910.

[0097] Referring to Figure 1In some embodiments, the switch door device can include a driving mechanism 100, a rotating door mechanism 200 and a top door mechanism 300. The driving mechanism 100 outputs driving force and can drive the rotating door mechanism 200 and the top door mechanism 300 to implement full rotation operation and initial top door operation of the door body 920. That is, the rotating door mechanism 200 and the top door mechanism 300 of the present embodiment are both driven by the driving mechanism 100 and are both provided with driving force by the driving mechanism 100. The driving mechanism 100 includes a driver 110 providing power and a linkage gear 120 connected to the top door mechanism 300 and the rotating door mechanism 200 respectively, so that the driver 110 drives the top door mechanism 300 and the rotating door mechanism 200 to deflect relative to the base 600 through the linkage gear 120. The driving mechanism 100 is further provided with a clutch device 400 connected between the linkage gear 120 and the driver 10 to achieve separable connection, establish or cut off the connection between the linkage gear 120 and the driver 10, so as to flexibly control the on-off of the transmission path between the driver 110 and the top door mechanism 300 and the rotating door mechanism 200. Thus, when manually switching the door, the top door mechanism 300 and the rotating mechanism 200 do not interfere with the driving mechanism 100, and when the device fails or is disturbed by the environment, the connection of the driving mechanism 100 can be cut off to ensure the safety of the device structure and avoid mechanical damage.

[0098] Referring to Figure 10 and Figure 12 In some embodiments, the rotating door mechanism 200 or the top door mechanism 300 can be respectively arranged in cooperation with the driving mechanism 100 to separately implement the switch door structure scheme or the top door structure scheme. The top door mechanism 300 of the present embodiment cooperates with the driving mechanism 100 to break through the opening door resistance such as adsorption resistance of the door body 920 and the box body 910, negative pressure and the like, to open the door body 920 to a preset angle, so as to facilitate subsequent automatic or manual door opening operation. The top door mechanism 300 includes a linkage member 310 and a top door member rotatably connected thereto, and the linkage member 310 is rotatably arranged on the base 600. The rotating door mechanism 200 includes a driving member 210 rotatably connected to the base 600 and a rotating door member 220 rotatably connected to the driving member 210, and the rotating door member 220 is further hingedly connected to the door body 920. The linkage gear 120 is connected to the driving member 210 and the linkage member 310 respectively.

[0099] Referring to Figure 1In some embodiments, in order to meet the assembly precision requirement or realize efficient assembly, a separate base 600 can be arranged on the cabinet 910 to carry the driving mechanism 100, the swing door mechanism 200 and the top door mechanism 300, so that the driving mechanism 100, the swing door mechanism 200 and the top door mechanism 300 can be assembled on the base 600, and then the base 600 is assembled on the cabinet 910, so as to realize the standardized installation of the base 600 on the electrical appliance, which can ensure the stability of the electrical appliance and the assembly precision and reliability.

[0100] In the embodiment, the base 600 is a separate component arranged in the cabinet 910. In other embodiments, the base 600 can also be a part of the cabinet 910 and be formed on the cabinet 910 instead of being a separate component.

[0101] It is worth noting that the output force is inversely proportional to the speed under the condition that the output power is constant. Therefore, under the condition that the driving power is constant, a larger pushing force can be obtained at a lower door body deflection speed in the top door stage, so that the top door mechanism 300 can quickly and reliably push open the door body 920. After the swing door mechanism 200 is put into operation, a higher swing door speed can be obtained under the condition that the swing door force is small, so that the swing door operation can be quickly completed, and the door can be opened to the position.

[0102] The structure of the clutch device 400 will be described in detail below.

[0103] Referring to Figure 2 , Figure 3 , Figure 4 and Figure 5 , the clutch device 400 provided in the embodiment is specifically provided with a first transmission assembly 410 and a second transmission assembly 420 which can be connected and separated, for corresponding connection with upstream and downstream structures respectively, to realize stable and reliable connection and separation of the upstream and downstream structures. In the embodiment, the clutch device 400 is used to realize the connection and disconnection between the driving mechanism 100 upstream and the swing door mechanism 200 and the top door mechanism 300 downstream in the door opening and closing device.

[0104] In order to realize the switching of the connection and separation states of the first transmission assembly 410 and the second transmission assembly 420, the clutch device 400 is further provided with a clutch pushing assembly 430 for pushing the first transmission assembly 410 and the second transmission assembly 420 to approach each other for connection or move away from each other for separation. The first transmission assembly 410 and the second transmission assembly 420 can be respectively provided with matched engagement structures to realize stable connection and convenient separation of the first transmission assembly 410 and the second transmission assembly 420.

[0105] In some embodiments, the clutching and pushing assembly 430 is provided with a pushing sleeve 431 which can be sleeved on the second transmission assembly 420. In assembly, the second transmission assembly 420 is embedded in the pushing sleeve 431, so as to stably fix the second transmission assembly 420, and the second transmission assembly 420 can be indirectly pushed to move by pushing the pushing sleeve 431, so as to avoid directly contacting the second transmission assembly 420 and affecting the operation state of the second transmission assembly 420; the structure stability of the second transmission assembly 420 can also be ensured by pushing the second transmission assembly 420 as a whole.

[0106] The clutching and pushing assembly 430 is also provided with a push rod 432 for pushing the pushing sleeve 431, the pushing sleeve 431 is moved in the first direction by the push rod 432, the second transmission assembly 420 is pushed as a whole to move close to the first transmission assembly 410, and the connection is established; or the pushing sleeve 431 is moved in the reverse direction of the first direction by operating the push rod 432, so that the second transmission assembly 420 moves away from the first transmission assembly 410, and the connection is disconnected.

[0107] Referring to Figure 2 and Figure 5 In some embodiments, the second transmission assembly 420 is provided with a first transmission part 421 which can be connected in transmission with the first transmission assembly 410. The first transmission part 421 is provided with a connecting end 4211 for connecting the first transmission assembly 410, and is also provided with a pushing end 4212 for being embedded in the pushing sleeve 431, so as to form a stable fixing structure. Correspondingly, the connecting end 4211 can protrude from the pushing sleeve 431, so as to ensure smooth connection of the connecting end 4211 with the first transmission assembly 410.

[0108] Referring to Figure 6 , Figure 7 , Figure 8 and Figure 9 In some embodiments, in order to improve the smoothness and convenience of connection and disconnection of the first transmission assembly 410 and the connecting end 4211, a clamping groove 411 which can accommodate the connecting end 4211 is formed on the first transmission assembly 410, and the shape of the clamping groove 411 can be set to match the structural shape of the connecting end 4211, so that the connection and transmission cooperation state of stable connection can be established through one-way pushing operation and convenient clamping process, and the reliability of the transmission state can be ensured; at the same time, when the connection is disconnected, the quick and smooth disconnection can also be realized through convenient one-way pushing, and the influence on the state and structure stability of the first transmission part 421 and the first transmission assembly 410 can be reduced.

[0109] In some embodiments, based on the one-way approaching and separating engagement and disengagement operation, the inner teeth 413 can be arranged on the slot wall surface of the clamping groove 411, and correspondingly, the outer teeth 4215 can be arranged on the outer surface of the connecting end 4211, and the meshing and disengaging of the inner teeth 413 and the outer teeth 4215 can be achieved by the movement of the first transmission member 421.

[0110] In some embodiments, in order to adapt to the meshing requirement of the first transmission member 421 in the rotating state under certain working conditions, the gap between the two adjacent inner teeth 413 in the clamping groove 411 can be set to be greater than the width of the outer teeth 4215, so as to have a large enough adaptive space, facilitate the fitting of the outer teeth 4215 in place, and efficiently establish the meshing connection state.

[0111] In some embodiments, the gap between the two adjacent inner teeth 413 can be set to be more than twice the width of the outer teeth 4215.

[0112] In some embodiments, the gap between the two adjacent outer teeth 4215 on the outer surface of the connecting end 4211 can also be set to be greater than the width of the inner teeth 413, so as to have a large enough adaptive space, facilitate the fitting of the inner teeth 413 in place, and efficiently establish the meshing connection state.

[0113] In some embodiments, the gap between the two adjacent outer teeth 4215 can be set to be more than twice the width of the inner teeth 413.

[0114] In some embodiments, the first transmission assembly 410 can adopt the meshing transmission mode to establish the transmission relationship with other structures, and the first transmission assembly 410 can be arranged as a first transmission gear, and correspondingly, the clamping groove 411 can be arranged at the axial end of the first transmission gear. The first transmission member 421 moves along the axial direction of the first transmission gear to realize connection and separation.

[0115] In some embodiments, in order to adapt to the rotating working state of the first transmission gear, the clamping groove 411 can be arranged as a circular groove, the inner teeth 413 can be arranged at equal intervals on the wall surface of the circular groove, and the number of the teeth 413 is at least two; the number of the teeth 413 can be set to six or eight, and the specific number can be set according to the specification of the clamping groove 411. Correspondingly, the outer surface of the connecting end 4211 can also be arranged as a circle, and the outer teeth 4215 can be arranged at equal intervals on the wall surface of the circular groove, and the number of the teeth 413 is at least two; the number of the teeth 413 can also be set to six or eight; and the specific number can be the same as the number of the inner teeth 413.

[0116] The central shaft hole 412 of the first transmission gear is coaxially arranged with the circular clamping groove 411, so as to ensure the meshing efficiency and stability of the inner teeth 413. The extension cylinder 414 can be coaxially arranged at the aperture of the central shaft hole 412, so as to facilitate the stable fixation of the cooperatively embedded rotating shaft to the base 600.

[0117] In some embodiments, since the pushing end 4212 is embedded in the pushing sleeve 431, when the first transmission member 421 rotates, due to the excessively large contact surface, it is prone to cause unstable rotation posture and excessively large abrasion. A plurality of limiting bosses 4216 can be arranged on the outer circumferential surface to separate the inner surface of the pushing sleeve 431 and the outer circumferential surface of the pushing end 4212, leave a certain uniform gap, greatly reduce the contact area, reduce the abrasion degree, and ensure the stability of the rotation posture of the first transmission member 421.

[0118] In some embodiments, the limiting boss 4216 is slidably abutted on the inner surface of the pushing sleeve 431, so as to further reduce the abrasion degree. A self-lubricating material layer can be arranged on the limiting boss 4216 to reduce the friction coefficient, improve the wear resistance, and prolong the service life.

[0119] In some embodiments, a plurality of protrusions can be further arranged on the outer circumferential surface of the limiting boss 4216 to further reduce the contact surface.

[0120] In some embodiments, in order to stably push the first transmission member 421, a supporting flange 4213 can be arranged on the first transmission member 421 to be rested on the end surface of the pushing sleeve 431. The supporting flange 4213 can be arranged between the connecting end 4211 and the pushing end 4212. Generally, the transmission member 421 can be integrally formed, and it is not excluded that the transmission member 421 is separately formed and then assembled together.

[0121] In some embodiments, in order to ensure the structural strength, the first transmission member 421, the pushing sleeve 431 and the like need a certain thickness. After assembly, the overall height is generally high, and the required assembly space is also large. Therefore, a sunken table 4313 can be arranged on the end surface of the pushing sleeve 431 to accommodate the supporting flange 4213, reduce the overall height, and to a certain extent, maintain the stability of the rotation axis of the first transmission member 421.

[0122] In some embodiments, in order to meet the transmission connection requirements of the first transmission member 421 and the upstream structure, a connecting structure needs to be arranged on the first transmission member 421. Therefore, the second transmission assembly 420 further comprises a second transmission member 422 for driving the first transmission member 421 and being connected with the upstream structure to realize the transmission of the torque.

[0123] In some embodiments, considering that the first transmission member 421 needs to move in the first direction and also needs to meet the torque transmission, the first transmission member 421 can be sleeved on the second transmission member 422 and can rotate with the second transmission member 422 to realize the torque transmission, and at the same time, can move relative to the second transmission member 422 in the first direction.

[0124] In some embodiments, in order to realize the relative sliding of the first transmission member 421 and the second transmission member 422 and meet the following rotation, an axial through slot 4217 is formed on the inner surface 4214 of the first transmission member 421, and a clamping block 4222 is arranged on the outer surface 4221 of the second transmission member 422 and can be embedded in the axial through slot 4217, so that the first transmission member 421 can follow the rotation of the second transmission member 422. At the same time, the clamping block 4222 can also slide along the axial through slot 4217, so as to meet the sliding of the first transmission member 421 relative to the second transmission member 422 along the first direction.

[0125] In order to meet the torque transmission requirement, a transmission shaft 423 can be coaxially fixed in the second transmission member 422 for connecting the upstream driver 110 and driving the second transmission member 422.

[0126] In some embodiments, in order to meet the requirement that the transmission shaft 423 is fixed in the second transmission member 422, a transmission shaft hole 4223 can be formed on the second transmission member 422, and a first limiting surface 4224 is arranged in the transmission shaft hole 4223, and a second limiting surface 4231 is arranged on the outer circumferential surface of the transmission shaft 423, when the transmission shaft 423 is embedded in the transmission shaft hole 4223, the second limiting surface 4231 abuts against the first limiting surface 4224, so as to limit the rotation of the transmission shaft 423 relative to the second transmission member 422.

[0127] In some embodiments, in order to meet the process requirement and simplify the molding process, the transmission shaft 423 can be arranged as a cylindrical member, and a tangential plane is arranged on the outer circumferential surface of the cylindrical member to form the second limiting surface 4231. Correspondingly, the transmission shaft hole 4223 is arranged in a corresponding form.

[0128] In some embodiments, the first transmission assembly 410 and the second transmission member 422 are coaxially arranged on the transmission shaft 423, so that the second transmission assembly 420 can be stably moved along the axial direction of the transmission shaft 423 towards or away from the first transmission assembly 410, and the stability of the connection and separation of the first transmission assembly 410 and the second transmission assembly 420 is ensured.

[0129] In some embodiments, the moving direction of the pushing sleeve 431 is along the first direction, and the pushing direction of the push rod 432 can be along the first direction.

[0130] In some embodiments, due to the small overall thickness space and the relatively small thickness direction forming, the direct pushing along the first direction requires the specification of the pushing structure to be very small, which undoubtedly greatly increases the molding and assembly difficulty. Therefore, a variable direction pushing structure can be provided; a first pushing surface 4311 in a non-parallel state with the first direction can be provided on the pushing sleeve 431, so that the pushing operation along the pushing direction can be realized by pushing the first pushing surface 4311, and the pushing sleeve 431 is pushed to the first transmission assembly 410 by pushing the first pushing surface 4311 with the push rod 432.

[0131] In some embodiments, in order to optimize the efficiency of the pushing operation, the angle between the first pushing surface 4311 and the first direction can be set to be in the range of 30 degrees to 60 degrees, such as 30 degrees, 45 degrees or 60 degrees, etc.

[0132] In some embodiments, the angle between the pushing direction of the push rod 432 and the first direction can be controlled to be 90 degrees, so as to minimize the arrangement space required for the arrangement of the push rod 432 and the second transmission assembly 420, and reduce the overall size of the device.

[0133] In some embodiments, in order to improve the stability of the variable direction pushing, a second pushing surface 4321 in contact with the first pushing surface 4311 can be provided on the push rod 432, so as to improve the stress uniformity of the first pushing surface 4311 by means of face-to-face contact pushing and to ensure the stability of the moving posture of the pushing sleeve 431.

[0134] In some embodiments, in order to balance the stress of the pushing sleeve 431, the number of first pushing surfaces 4311 can be set to two, and the corresponding push rod 432 is also provided with two push arms 4323 corresponding to the two first pushing surfaces 4311; so as to ensure the stress uniformity of the pushing sleeve 431 by means of two-point force. And the two push arms 4323 can be connected to the same connecting part 4324 to realize synchronous action and ensure the consistency of the force, so as to ensure the stress uniformity of the pushing sleeve 431. Correspondingly, the second pushing surface 4321 is provided on each of the two push arms 4323.

[0135] In some embodiments, the two first pushing surfaces 4311 can be arranged on opposite sides of the pushing sleeve 431, and the two push arms 4323 are arranged side by side, and the second pushing surface 4321 is arranged on the end of the push arm 4323 away from the connecting part 4324, so that the pushing operation can be realized by pushing the connecting part 4324.

[0136] In some embodiments, the number of first pushing surfaces 4311, second pushing surfaces 4321 and push arms 4323 can be set to more than two according to the specification of the pushing sleeve 431.

[0137] In some embodiments, in order to limit the rotation of the pushing sleeve 431, a first pushing groove 4312 can be formed on the pushing sleeve 431, and the pushing rod 432 is embedded into the pushing groove 4312 to connect the pushing rod 432 and the pushing sleeve 432 into one body, limit the circumferential relative rotation, and ensure the reliability of the pushing operation.

[0138] In some embodiments, the first pushing groove 4312 can be provided as two, the pushing rod 432 can be provided as two parallel pushing arms 4323 connected by a connecting portion 4324. The two first pushing grooves 4312 are arranged on the opposite sides of the pushing sleeve 431, thereby stably limiting the two points and ensuring the stress stability of the pushing sleeve 431. Correspondingly, the first pushing faces 4311 are arranged on the groove walls of the two first pushing grooves 4312, respectively.

[0139] In some embodiments, the second pushing faces 4321 can be arranged on the ends of the two pushing arms 4323 away from the connecting portion 4324, respectively, and the two second pushing faces 4321 are in contact with the two first pushing faces 4311, respectively.

[0140] In order to limit the radial deviation of the pushing sleeve 431, the limiting baffle plates 4322 can be arranged on the two pushing arms 4323, respectively, and specifically arranged on the side of the pushing arm 4323 away from the other pushing arm, so that the two limiting baffle plates 4322 are arranged on the opposite sides of the pushing sleeve.

[0141] In order to implement the pushing operation of the pushing rod 432, a linear driver 433 can be connected to the pushing rod 432 to push the pushing rod 432 in the second direction or reset, so as to move the pushing sleeve 431 in the second direction by the linear driver 433, connect the first transmission assembly 410 and the second transmission assembly 420, and establish the torque transmission structure of the door opening and closing device. When the linear driver 433 is reset, the pushing rod 432 releases the pushing sleeve 431, disconnects the connection between the first transmission assembly 410 and the second transmission assembly 420, and disconnects the torque transmission structure of the door opening and closing device.

[0142] In some embodiments, the linear driver 433 can be an electromagnetic push rod, a ball screw, or the like linear moving assembly.

[0143] In some embodiments, the driver 110 can be provided as a speed reduction motor or a motor configured with a speed reduction gear box, so as to be able to reasonably control the output torque and the rotation speed.

[0144] When the clutch control is performed, the linear driver 433 is actuated to move the push rod 432 towards the push sleeve 431, the second push surface 4321 at the head end of the push rod 432 pushes the first push surface 4311, the push sleeve 431 is moved upwardly, the push sleeve 431 moves towards the first transmission assembly 410, the first transmission member 421 of the second transmission assembly 420 moves towards the first transmission assembly 410, and the connecting end 4211 of the first transmission member 421 is embedded into the clamping groove 411 of the first transmission member 410 to establish a circumferential transmission connection. At this time, the linear driver 433 is kept at the current position, the push rod 432 supports the push sleeve 431 at the bottom, and the transmission connection is maintained. The driver 110 is rotated to rotate the second transmission member 422, and then rotate the first transmission member 421, the first transmission assembly 410 and the linkage gear 120, so as to realize the door opening and closing driving. When it is necessary to disconnect, the linear driver 433 is reset, the push sleeve 431 naturally falls under the action of gravity, the connecting end 4211 is gradually separated from the clamping groove 411, and the connection between the first transmission member 421 and the first transmission assembly 410 is disconnected, so as to disconnect the connection between the linkage gear 120 and the driver 110. In this process, the first transmission member 421 can slide axially relative to the second transmission member 422 to change the up-down position, and the circumferential transmission is realized through the clamping and embedding of the clamping block 4222 and the axial through groove 4217. It is worth noting that the action time of the linear driver 433 is not necessarily earlier than the action time of the driver 110, that is, there is no certain delay sequence between them.

[0145] In some embodiments, the linkage gear 120 is an element of the direct drive rotating door mechanism 300 and the top door mechanism 300, and its driving mode should meet the action mode of the deflectable top door mechanism 300 and the top door mechanism 300 at the same time. The detailed structure of the linkage gear 120 is introduced below.

[0146] Referring to Figure 14 , Figure 15 , Figure 16 , Figure 17 and Figure 18In some embodiments, the body of the linkage gear 120 can be arranged as a rotating member on the base 600, provided with a third tooth portion 121 engaged with the upstream driver 110, and drives the top door mechanism 300 and the driving member 210 by rotating output torque. To meet the driving requirements of the driving member 210, a first pushing portion 1231 and a second pushing portion 1232 can be arranged on the body, and a space sufficient to accommodate the driving member 210 is left between the two, so that in the actual assembly state, the driving member 210 can be pushed from both sides by the first pushing portion 1231 and the second pushing portion 1232 respectively, so that when the body of the linkage gear 120 rotates forward and reversely, the driving member 210 is pushed in two opposite directions respectively, thereby driving the rotating door member 220 to push or pull the door body 920, achieving the opening and closing operations.

[0147] In some embodiments, the second pushing portion 1232 can be arranged as an opening pushing portion, and the first pushing portion 1231 can be arranged as a closing pushing portion; that is, when the linkage gear 120 rotates forward, the driving member 210 is pushed towards the door body 920 by the second pushing portion 1232 to push the rotating door member 220 to push the door body 920 to open; when the linkage gear 120 reversely rotates, the driving member 210 is pushed away from the door body 920 by the first pushing portion 1231 to push the rotating door member 220 to pull the door body 920 to close.

[0148] In some embodiments, in the opening process, in order to meet the timing control of first implementing the top door operation and then implementing the rotating door operation, the spacing between the first pushing portion 1231 and the second pushing portion 1232 can be matched and designed to leave a certain deflection space, so that when the driving member 210 is deflected relative to the body, it needs to rotate a first angle from the first pushing portion 1231 to the second pushing portion 1232, so that by setting the initial position of the driving member 210, a time difference between the deflection of the linkage gear 120 and the deflection of the driving member 210 can be obtained, so that in the opening process, when the linkage gear 120 rotates and drives the top door mechanism 300 to implement the pushing operation, the rotating door mechanism 200 does not simultaneously implement the active rotating door operation, but delays for a period of time before the rotating door mechanism 200 implements the active rotating door operation under the driving of the linkage gear 120.

[0149] In some embodiments, the initial position of the driving member 210 can be arranged to abut against the first pushing portion 1231, so that in the opening process, after the linkage gear 120 starts to rotate, the driving member 210 gradually approaches the second pushing portion 1232 from the first pushing portion 1231, so that the time of pushing the driving member 210 by the second pushing portion 1232 can be accurately controlled, so that the rotating door mechanism 200 and the top door mechanism 300 seamlessly connect, smoothly open the door, and avoid bad cooperation defects such as jamming and vibration.

[0150] According to the design opening degree of the door body 920, the deflection angle of the driving member 210 can be matched and set to meet the rotating door requirement, and the first angle is controlled. The value of the first angle is also related to the initial position and length of the driving member 210, and can be adjusted and set according to the actual assembly working condition.

[0151] Referring to Figure 1 、 Figure 10 and Figure 19 In some embodiments, in order to improve the position control accuracy of the driving member 210 and avoid dislocation of the driving member 210, a second stopper 620 can be arranged on the base 600 to avoid excessive deflection. The second stopper 620 can be arranged between the second pushing part 1232 and the first pushing part 1231, and the initial position of the driving member 210 can be arranged to abut against the first pushing part 1231 to limit the driving member 210 between the second stopper 620 and the first pushing part 1231, thereby ensuring the reliability of the initial position. According to the width of the driving member 210 and the preset initial position, the initial position of the first pushing part 1231 is referred to, and the distance between the second stopper 620 and the first pushing part 1231 is slightly greater than the width of the driving member 210 as the standard to set the position of the second stopper 620.

[0152] In some embodiments, a stopper profile 621 matching the side wall profile of the driving member 210 can also be arranged on the second stopper 620 to ensure the uniformity of the stress of the driving member 210 in the stop state and avoid local stress concentration and structural damage.

[0153] In some embodiments, in order to improve the rotation control accuracy and reliability of the driving member 210, the first end of the body and the driving member 210 can be coaxially and rotatably arranged on the base 600, so that the angle control of the driving member 210 can be realized by controlling the rotation angle of the body, thereby greatly improving the convenience. In other embodiments, the first end of the driving member 210 can also be arranged coaxially with the body, and the driving member 210 can be pivotally connected to the body of the linkage gear 120 to form a structure similar to a crankshaft drive; the driving member 210 can also be rotatably arranged on the base, and two pushing arms are extended and the first pushing part 1231 and the second pushing part 1232 are arranged on the two pushing arms respectively, and the driving member 210 is arranged between the two pushing arms to realize the pushing operation. The position and structure specifications of the matching arrangement can be determined according to experiments.

[0154] In some embodiments, in order to drive the top door mechanism 300, a third pushing part 122 is arranged on the body of the linkage gear 120 to connect and drive the top door mechanism 300. During the door opening operation, the body of the linkage gear 120 rotates forward and drives the top door mechanism 300 to push the door body 920. Conversely, during the door closing operation, the body of the linkage gear 120 rotates reversely to drive the top door mechanism 300 to reset.

[0155] In some embodiments, the top door operation only needs to break the suction force between the door body 920 and the box body 910, and open the door body 920 by a small angle, so the top pushing stroke of the top door mechanism 100 is also small; accordingly, the stroke and time of the top pushing top door mechanism 100 connected by the linkage gear 120 can also be set to be relatively short only in the top door process, that is, after the door turning mechanism 200 actively turns the door, the top door mechanism 100 can be disconnected from the linkage gear 120 or only continue to be separated for a relatively short period of time, which simplifies the structure linkage state in the working state and avoids mutual interference.

[0156] Referring to Figure 15 In order to improve the time control accuracy and reliability of connection and disconnection, the first tooth part 313 can be arranged on the top door mechanism 100, and the second tooth part 1221 engaged and driven with the first tooth part 313 can be arranged on the third top pushing part 122, so that the top pushing stroke can be adjusted by controlling the length and number of the engaged tooth parts. In the door opening process, the linkage gear 120 rotates forward, that is, the top door mechanism 100 is driven by the engaged and driven mode to push the door body 920 until the engagement is disengaged, and the top door mechanism 100 will no longer be forced; in the door closing process, the linkage gear 120 rotates reversely, and when the linkage gear 120 rotates by a set angle, the engagement connection between the first tooth part 313 and the second tooth part 1221 is re-established, and then the top door mechanism 100 moves in the reverse door opening direction under the driving of the linkage gear 120 until it is reset.

[0157] In some embodiments, the top door stroke control of the top door mechanism 100 can be realized based on the deflection control of the driving part 210. Specifically, the angle of the linkage gear 120 rotated within the time period from the beginning of the engagement between the first tooth part 313 and the second tooth part 1221 to the disengagement can be set as the second angle. Considering that the first angle is the angle of the body of the linkage gear 120 rotated relative to the driving part 210 when the body starts to rotate, that is, the angle of the door turning mechanism 200 delayed when the body starts to rotate forward, the first angle can be controlled to be less than or equal to the second angle, that is, the engagement time period is controlled based on this, so as to control the length of the engaged tooth parts.

[0158] In some embodiments, in order to ensure the smoothness of the connection between the top door process and the door turning process, the difference between the first angle and the second angle can be controlled to be within 1 degree. That is, when the driving part 210 abuts against the second top pushing part 1232, the first tooth part 313 and the second tooth part 1221 still maintain a small amount of engagement or maintain the last engaged tooth pair.

[0159] Referring to Figure 14 and Figure 16In some embodiments, in order to smoothly control the deflection posture of the driving member 210, a rotation limiting groove 123 can be formed on the body of the linkage gear 120, and the body of the linkage gear 120 is arranged coaxially rotatably on the base 600 with the driving member 210, and the coaxial rotating shaft 211 can be arranged in the rotation limiting groove 123, and the driving member 210 is rotatably arranged in the rotation limiting groove 123, and the first pushing part 1231 and the second pushing part 1232 are arranged as the groove wall of the rotation limiting groove 123 in the radial direction of the linkage gear 120, that is, as a fan-shaped groove. The driving member 210 is accommodated in the rotation limiting groove 123, which reduces the overall assembly height, and the sink structure can also effectively protect the impact resistance and vibration performance of the pushing area of the driving member 210, and ensure the reliability of the structure.

[0160] In some embodiments, in order to ensure that the driving member 210 is in the initial position against the first pushing part 1231, and to resist the influence of vibration on its position and posture, a return spring 240 can be arranged, and the two ends thereof are connected to the body of the linkage gear 120 and the driving member 210 respectively, and a tensioning force is maintained between the driving member 210 and the first pushing part 1231, forming a mutual approaching tendency; at the same time, the driving member 210 is guided to abut against the second pushing part 1231 after the door body 920 is opened. In other embodiments, the return spring 240 can also be replaced by a spring leaf or other elastic material, and the limiting can be realized by elastic pushing, tensioning and other modes.

[0161] In some embodiments, in order to facilitate fixation, a first fixing seat 212 can be arranged on the driving member 210 for fixing the first end of the return spring 240; and a second fixing seat 125 can also be arranged on the body of the linkage gear 120 for fixing the second end of the return spring 240.

[0162] Referring to Figure 16 , considering the deformation characteristics of the return spring 240, a return spring accommodating groove 124 is formed on the body of the linkage gear 120, and the return spring 240 is arranged in the return spring accommodating groove 124, which not only realizes the assembly of the return spring 240 on the linkage gear 120, but also avoids the impact and scratching of the return spring 240 by the outside world, and ensures the stability of the deformation state. In this embodiment, the return spring accommodating groove 124 can also be arranged as a fan-shaped groove type, and the width of the side close to the rotation limiting groove 123 is relatively larger, so as to adapt to the deflection process of the driving member 210 and avoid the interference and bending deformation of the return spring 240.

[0163] In some embodiments, in order to improve the stability and reliability of the linkage gear 120, a third stopper 641 and a fourth stopper 642 can be arranged on the base 600, respectively arranged at both ends of the rotation track of the linkage gear 120, to prevent excessive rotation and ensure the accuracy of the rotation in the forward and reverse directions. When the door body 920 is closed, the third stopper 641 stops the rotation of the linkage gear 120, and when the door body 920 is opened to the limit position, the fourth stopper 642 stops the rotation of the linkage gear 120.

[0164] In some embodiments, the rotation limit angle of the linkage gear 120 can be determined according to the design opening of the door body 920, and the rotation angle of the linkage gear 120 between the third stopper 641 and the fourth stopper 642 can be set to 130 degrees, 90 degrees or more, or 120 degrees or other specific degrees.

[0165] Referring to Figure 14 In some embodiments, in order to ensure the balanced posture of the driving member 210, an extension limiting part 213 can be arranged at the end of the driving member 210, which is in contact with the base 600 to prevent unilateral tilting. In other embodiments, a self-lubricating material layer can also be arranged on the extension limiting part 213 to reduce the friction coefficient.

[0166] The door rotating mechanism 200 and the door lifting mechanism 300 will be introduced respectively.

[0167] Referring to Figure 10 In some embodiments, a hinge seat 230 can be arranged on the door body 920 and hinged with the first end 221 of the door rotating member 220. In order to ensure the reliability and uniformity of the hinge, the hinge seat 230 can be arranged in the form of a U-shaped double-arm hinge seat, and the first end 221 of the door rotating member 220 is embedded in the hinge seat and fixed by a hinge shaft.

[0168] In some embodiments, the driving member 210 and the door rotating member 220 can be arranged in the form of a plate, so that the installation height can be greatly reduced in the stacked state.

[0169] Referring to Figure 14 In some embodiments, the pivoting parts of the driving member 210 and the door rotating member 220 can also be arranged in the form of a reduced thickness, so that the overall thickness in the pivoting stacked state is reduced, and the installation height is reduced. The pivoting shaft 214 can be arranged on the lower plate-shaped member and rotatably arranged in the driving member 210 and the door rotating member 220, which carries the upper plate-shaped member, forming a stable and reliable pivoting structure. In other embodiments, one end of the driving member 210 and the door rotating member 220 can be arranged in the form of a U-shaped pivoting seat, and the other end is embedded in the pivoting seat and fixed by the pivoting shaft 214.

[0170] Referring to Figure 11In some embodiments, in order to ensure the rotation door efficiency and stability of the structure of the rotation door mechanism 200, the relative deflection state and extension length of the driving member 210 and the rotation door member 220 to the door body opening and the rotation door speed can be planned and arranged in combination with the rotation center point B of the door body 920 of the electrical appliance and the arrangement position of the base 600 to the hinge point C of the rotation door mechanism 200 and the door body 920. Specifically, the hinge point A between one end of the rotation door member 220 and the hinge point C of the door body 920, the hinge point A between one end of the driving member 210 and the rotation door member 220, and the hinge point D between the other end of the driving member 210 and the base 600 are rotationally arranged in a distributed state, that is, the hinge point A is located on the opposite side of the hinge point C and the hinge point D with respect to the line connecting the hinge point C and the hinge point D, forming a convex quadrilateral, so as to avoid the deflection of the driving member 210 and the rotation door member 220 exceeding 180 degrees, which causes the extreme state of the rotation door member 220 not being forced and unable to rotate the door body 920, and limits the opening range of the door body 920.

[0171] In some embodiments, in order to maximize the openable angle of the door body 920 and the box body 910, and not to be excessively limited by the rotation door mechanism 200, the positions of the hinge point A, the hinge point C, the rotation center point B, and the hinge point D are arranged according to the principle of the parallelogram formed by the four sides in sequence, the position of the hinge point C of the door body 920 at one end of the rotation door member 220, the position of the hinge point D of the base 600 at the other end of the driving member 210, and the length of the two hinge points of the driving member 210 and the rotation door member 220; in this state, excluding the reasons of the structural width, thickness, and the hinge structure, the opening of the door body 920 can approach 180 degrees. Of course, the door body 920 of the refrigerator is not the larger the better, but is determined according to multiple factors such as installation conditions, use requirements, and convenience. In other embodiments, through the above arrangement, the door body opening can be stably and reliably realized at 130 degrees.

[0172] In some embodiments, the driving member 210 and the rotation door member 220 can be arranged in a rod shape, which takes into account the small size and high strength of the rotation door structure.

[0173] In some embodiments, the linkage gear 120 is an element for directly driving the driving member 210 and the top door mechanism 300, and the driving mode thereof should meet the action mode of the deflectable driving member 210 and the top door mechanism 300 at the same time.

[0174] In some embodiments, the top door mechanism 300 is an execution mechanism for preliminarily opening the door body 920 to a preset angle, which can realize the door opening operation through the step-by-step force accumulation under the driving of the driving mechanism 100.

[0175] Referring to Figure 1 and Figure 12In some embodiments, the top door mechanism 300 comprises a linkage 310 and a top door piece 320, one end of the linkage 310 is connected to the driving mechanism 100 for obtaining driving force, the linkage 310 can be actuated by the driving mechanism 100, and the other end of the top door piece 320 is used for pushing the door body 920 to rotate, the top door piece 320 is connected to the linkage 310, so as to implement the top door operation and reset under the driving of the linkage 310.

[0176] In some embodiments, one end of the linkage 310 is rotatably arranged on the base 600, so as to be able to deflect around a rotation shaft under the driving of the driving mechanism 100; the top door piece 320 is connected to the linkage 310, so as to be able to move along an arc-shaped track and continuously push the door body 920 after contacting the door body 920. The deflection structure of the linkage 310 can ensure the pushing effect and reduce the front pressure on the top door mechanism 300 to a certain extent, so as to ensure the structural stability and service life and improve the reliability of the top door operation.

[0177] In some embodiments, in order to further improve the efficiency of the top door operation, the top door piece 320 can be rotatably connected to the linkage 310, so that the top door piece 320 can deflect relative to the linkage 310, adjust the posture of the top door piece 320, and adaptively adjust the pointing direction of the top door piece 320 according to the installation conditions, so as to be able to face the door body 920 and ensure high-efficiency pushing. On the other hand, the top door mechanism 300 can adapt to the needs of different installation conditions and flexibly adjust the cooperation state of the linkage 310 and the top door piece 320 to ensure high-efficiency pushing performance.

[0178] In some embodiments, the top door piece 320 can be rotatably connected to the middle part of the linkage 310, so as to leave enough deflection space for the top door piece 320 and avoid interference with other structures.

[0179] In order to ensure high top door efficiency, the pushing direction of the top door piece 320 can be arranged to be substantially perpendicular to the direction of the closed door body 920. Since the top door piece 320 rotates with the linkage 310, the pushing direction also deflects to a certain extent. In order to realize that the top door piece 320 stably applies the pushing force as much as possible perpendicular to the door body 920, a waist-shaped hole 322 can be formed on the top door piece 320, a pin shaft 360 is arranged on the linkage 310, the pin shaft 360 is movably embedded in the waist-shaped hole 322 to realize the deflection of the top door piece 320 relative to the linkage 310; at the same time, the length direction space of the waist-shaped hole 322 can also leave sliding space for the pin shaft 360, so that the top door piece 320 can produce relative sliding along the length direction of the waist-shaped hole 322 without moving with the linkage 310, thereby maintaining the stability of the pushing direction of the top door piece 320. The length of the waist-shaped hole 322 can be matched and designed according to the size of the top door stroke, for example, the longer the top door stroke, the longer the length of the waist-shaped hole 322.

[0180] In some embodiments, in order to meet the requirements of larger thrust force and thrust stroke with smaller opening specification, the length direction of the waist-shaped hole 322 can be arranged perpendicular to the thrust direction of the top door piece 320. In other embodiments, the length direction of the waist-shaped hole 322 can also not be strictly arranged perpendicular to the thrust direction of the top door piece 320, but can have a certain angle, so that the moving stroke of the pin shaft 360 has a component perpendicular to the thrust direction of the top door piece 320, thereby ensuring the stable axial thrust posture of the thrust rod 320; for example, the angle can be set to 30 degrees, 45 degrees, or 60 degrees.

[0181] In some embodiments, in order to ensure the force balance of the top door piece 320, the linkage piece 310 can be arranged below the top door piece 320 to support the top door piece 320 to a certain extent, so that the pin shaft 360 is stably embedded in the waist-shaped hole 322 in the axial direction without the risk of disengagement, thereby ensuring the stability of the pivoting function and the relative sliding function of the waist-shaped hole 322 and the pin shaft 360.

[0182] In some embodiments, the waist-shaped hole 322 can be arranged on the linkage piece 310, and the pin shaft 360 can be arranged on the top door piece 320. In order to ensure the stability of the pivoting function and the relative sliding function, the linkage piece 310 can also be arranged above the top door piece 320, which is not limited herein.

[0183] In some embodiments, in order to reduce the overall installation height, reduce the equipment scale and installation space requirements, and reduce the material cost, a thickness-reduced groove 312 can be arranged on the linkage piece 310 to reduce the superimposed thickness of the linkage piece 310 and the top door piece 320 while ensuring the structural strength of the linkage piece 310. The width specification of the thickness-reduced groove 312 can be set to be slightly larger than the width of the area of the top door piece 320 deflected in the waist-shaped hole 322, so as to avoid the side wall of the thickness-reduced groove 312 blocking the relative deflection of the linkage piece 310 and the top door piece 320.

[0184] Referring to Figure 12 and Figure 19 In some embodiments, due to the influence of the friction force between the pin shaft 360 and the waist-shaped hole 322, the top door piece 320 still has a moving trend along the direction perpendicular to the thrust direction during the deflection of the linkage piece 310; therefore, a guide groove 632 can be arranged on the base 600, and the top door piece 320 can be slidingly arranged in the guide groove 632 along the set top door direction, so as to limit the displacement of the top door piece 320 along the direction perpendicular to the thrust direction and ensure the stability of the top door operation. In order to strengthen the guiding and limiting effect, the width of the guide groove 632 along the direction perpendicular to the thrust direction can be set to be slightly larger than the width of the top door piece 320, and only a certain sliding gap is reserved.

[0185] In some embodiments, in order to ensure smooth sliding of the top door piece 320, a layer of self-lubricating material can be provided on the groove surface of the guide groove 632, or a part of the top door piece 320 corresponding to the guide groove 632 can be provided with a layer of self-lubricating material, or the groove surface of the guide groove 632 and the part of the top door piece 320 corresponding to the guide groove 632 are both provided with a layer of self-lubricating material, or are directly formed of self-lubricating material, further reducing the frictional effect.

[0186] Referring to Figure 12 In some embodiments, considering the effects of assembly accuracy and fitting gap, the pushing seat 330 can be hinged on the end of the top door piece 320 away from the linkage 310, so that when the top door piece 320 abuts against the door body 920, the pushing seat 330 will abut against the door body 920 first and be able to adaptively deflect, so that the pushing seat 330 and the door body 920 achieve surface-to-surface contact, ensuring the stability of the size and posture of the contact surface, ensuring the stability of the pushing direction and size of the top door, and reducing the risk of excessive contact pressure caused by local contact pushing damaging the door body or the top door piece 320.

[0187] In some embodiments, in order to improve the adaptive ability in each direction, the pushing seat 330 and the top door piece 320 can be hingedly connected in a universal hinge structure.

[0188] In some embodiments, in order to reduce the contact vibration between the pushing seat 330 and the door body 920 and the wear of the pushing seat 330, a shock-absorbing pad 340 can be provided on the pushing seat 330. The shock-absorbing pad 340 can be made of a material with low friction coefficient.

[0189] In some embodiments, the second end of the linkage 310 is provided with a first tooth portion 313 engaged with the driving mechanism 100, so as to drive the linkage 310 to rotate through gear engagement transmission, thereby achieving accurate control of the rotation amplitude of the linkage 310, and further improving the control accuracy of the pushing stroke of the top door mechanism 300.

[0190] In some embodiments, considering that in the top door operation, the opening degree of the top door is usually set based on the angle required to break through the adsorption force of the door body 920 to the box body 910 and the rotation resistance, the deflection angle of the door body 920 relative to the box body 910 can be set to about 3 degrees, and the corresponding pushing stroke is also relatively small, and the deflection angle of the linkage 310 can also be set to a small level. Generally, the arrangement position of the linkage 310 on the base 600 can be correspondingly calibrated according to the deflection preset angle, forming a linkage 310 corresponding to a preset angle or a preset position on the base 600.

[0191] Referring to Figure 12In some embodiments, to ensure the control accuracy of the rotation angle of the linkage 310, an elastic limiting member 370 can be connected between the base 600 and the linkage 310 to always pull the linkage 310 to the preset position. This can ensure the control accuracy and the alignment accuracy and stability of the meshing connection with the driving mechanism 100.

[0192] In some embodiments, the elastic limiting member 370 can be a tension spring, the two ends of which are respectively connected to the linkage 310 and the base 600, and the stable elastic tension force is applied through the elastic elongation deformation. This can adapt to the deflection process of the linkage 310 based on the self-adaptive deformation of the tension spring and ensure the stability of the elastic tension effect. In other embodiments, the elastic limiting member 370 can also be a spring leaf or other forms of elastic member.

[0193] Referring to Figure 12 , Figure 14 and Figure 19 In some embodiments, a third fixed seat 314 can be arranged on the linkage 310, and a fourth fixed seat 635 can be arranged on the base 600 to correspondingly fix the two ends of the tension spring, thereby improving the stability of the tension spring under the action of deflection and deformation.

[0194] In some embodiments, a first stop member 630 can also be arranged on the base 600 and arranged at the end point of the preset deflection stroke of the linkage 310. When the top door mechanism 300 is deflected to the preset angle relative to the base 600, the first stop member 630 is in contact with the first stop member 630, thereby limiting the excessive deflection of the linkage 310 and limiting the further deflection of the top door mechanism 300 as a whole. At the same time, the stable meshing connection of the first tooth portion 313 and the driving mechanism 100 can also be ensured.

[0195] Referring to Figure 19 In some embodiments, the linkage 310 will be deflected and reset under the driving of the driving mechanism 100, and thus will be deflected in two opposite directions relative to the base 600, that is, there are two deflection limit positions. To ensure the position control accuracy of the linkage 310, a first stop surface 633 and a second stop surface 634 can be arranged on the first stop member 630 and correspondingly arranged at the two end points of the preset deflection stroke of the linkage 310, thereby achieving bidirectional limiting. The first stop surface 633 and the second stop surface 634 can be arranged to match the profile of the outer surface of the linkage 310, thereby improving the reliability of the contact limiting.

[0196] In some embodiments, the first stopper 630 can be a separate structure mounted on the base 600, with a height slightly higher than the arrangement height of the linkage 310, so as to achieve the stop function. In other embodiments, the first stopper 630 can also be directly formed on the base 600, with an integrated structure having a stop profile or stop portion formed on the base 600.

[0197] In some embodiments, the first stopper 630 can be arranged in cooperation with the elastic limiting piece 370, that is, the elastic limiting piece 370 can be elastically pulled or pressed against the first stopper 630 by arranging the mounting position of the elastic limiting piece 370.

[0198] Referring to Figure 12 and Figure 19 In some embodiments, an elastic piece accommodating groove 631 can be formed on the first stopper 630, and the first end of the elastic limiting piece 370 can be connected in the elastic accommodating groove 631, so as to not only achieve the assembly of the elastic limiting piece 370 on the base 600, but also protect the elastic limiting piece 370 through the groove structure, so as to avoid scratching and collision affecting the deformation state, thereby ensuring the in-place control reliability and accuracy of the linkage 310.

[0199] Referring to Figure 12 , Figure 14 and Figure 19 In some embodiments, the fourth fixing seat 314 can be arranged on the linkage 310 between the first tooth portion 313 and the pin shaft 360, that is, between the stress point and the force application point of the linkage 310, so as to improve the elastic limiting effect to a certain extent, and improve the performance of the linkage 310 resisting vibration and external interference.

[0200] In some embodiments, in order to adapt to the deflection action of the linkage 310, the second end of the elastic limiting piece 370 will also be deflected to a certain extent, so that the elastic limiting piece 370 as a whole will be deflected with the first end as the center. In order to avoid the influence of the elastic accommodating groove 631 on the deformation state, the groove shape of the elastic accommodating groove 631 can be set as a fan shape, leaving enough deflection space.

[0201] In some embodiments, the linkage 310 can be arranged as a plate, with the plate thickness direction perpendicular to the deflection direction, so as to ensure the structural strength under the top door operation condition, and also reduce the overall assembly thickness of the linkage 310, and reduce the installation height requirement. The top door piece 320 can also be arranged as a plate, with the plate thickness direction perpendicular to the deflection and pushing directions, so as to reduce the overall assembly height. In other embodiments, the linkage 310 and the top door piece 320 can also be arranged as rods.

[0202] Referring to Figure 14 and Figure 15In some embodiments, the first tooth portion 313 can be arranged at the first end of the plate body of the linkage 310, the second end of the plate body of the linkage 310 is provided with a linkage pivot hole 311, a linkage pivot shaft 350 is arranged on the base 600 and rotatably embedded in the linkage pivot hole 311, so that the linkage 310 can rotate relative to the base 600, and the overall volume is reduced while meeting the linkage function. In other embodiments, the waist-shaped hole 322 can also be arranged at the first end of the plate body of the top door 320, so as to reduce the length and width and the overall volume while meeting the top door function requirements.

[0203] In some embodiments, in order to improve the structural strength of the linkage 310 and the top door 320, reinforcing ribs can be arranged on the plate body thereof.

[0204] When assembled on an electrical appliance device provided with a cabinet 910 and a door body 920 hinged thereon, the base 600 can be fixed on the cabinet 910, and the top door direction of the top door 320 is directed to the door body 920. When the door opening operation is performed, the linkage 310 is driven by the driving mechanism 100 to deflect forward relative to the base 600, driving the top door 320 to slide along the guide groove 632 until it contacts the door body 920 and the thrust force gradually increases until the adsorption force and other rotation resistance between the door body 920 and the cabinet 910 are broken, and the door body 920 is pushed open; when the door closing operation is performed, the linkage 310 is driven by the driving mechanism 100 to deflect reversely relative to the base 600, driving the top door 320 to slide reversely along the guide groove 632 until it is reset.

[0205] Referring to Figure 13 In some embodiments, the top door mechanism 300 can also be arranged as an integrated top door type member 380, and the top door type member 380 can be rotatably arranged on the base 600 through a shaft similar to the linkage pivot shaft 350. The top door type member 380 can be functionally divided into a fourth tooth portion 381 for engaging and connecting the driving mechanism 100, and a top door portion 382 for pushing the door body 920 when the top door type member 380 is rotated under the driving of the driving mechanism 100 until the door body 920 is pushed open to a certain degree.

[0206] In some embodiments, the top door type member 380 is a fan-shaped structure, and the top door portion 382 is a side end angle of the fan-shaped structure, and when the top door type member 380 is rotated, the door body 920 is pushed along an arc-shaped trajectory. In other embodiments, the top door type member 380 can be arranged as a cam structure, and the first tooth portion 381 and the top door portion 382 are arranged on the rim of the cam. The cam rotates relative to the base 600 and rotates under the driving of the driving mechanism 100, smoothly pushing the door body 920 along an arc-shaped trajectory, reducing the degree of impact and vibration.

[0207] In some embodiments, in order to improve the structural strength, reinforcing ribs 383 can be arranged on the fan-shaped structure.

[0208] Referring to Figure 20 , Figure 21 and Figure 22 , in some embodiments, the base 600 is arranged to be assembled by two matched independent shells, and corresponding fasteners such as screws can be locked. Windows can be opened in the area where the top door piece 320 or the top door piece 380, the rotating door piece 220 and the driving piece 210 act, so as to facilitate the extension of the top door piece 320 or the top door piece 380, the rotating door piece 220 and the driving piece 210, ensure the smooth execution of the door opening and closing operation, and also can take into account the orderly storage, and protect the internal functional structure.

[0209] In some embodiments, the shaft reinforcing and fixing structure can be arranged corresponding to the positions of the coaxial shaft 211 and the linkage shaft 350, to ensure the reliability of the pivoting structure.

[0210] In some embodiments, a coaxial shaft seat 650 is arranged on the base 600 for rotating and fixing the coaxial shaft 211, improving the structural stability and fully improving the impact resistance, to ensure that the rotating door mechanism 200 and the linkage gear 20 are stably and reliably pivoted on the base 600. The base 600 is provided with a driving motor fixing groove 610 for fixing the driver 110.

[0211] Referring to Figure 26 and Figure 27 , the present embodiment also provides a refrigerator, which is the above-mentioned electrical appliance, comprising a cabinet 910 and a door body 920, and the door body 910 is rotatably arranged on the cabinet 910. A door opening and closing device is connected between the cabinet 910 and the door body 920, for pushing or the door body 920 to realize the deflection of the door body 920 relative to the cabinet 910, to realize the door opening and closing operation.

[0212] In some embodiments, the door opening and closing device is arranged with a base 600 fixed on the cabinet 910, and the top door piece 320 or the top door piece 380 is directed or abutted on the door body 920, and the rotating door piece 220 is hinged on the door body 920 through the hinge seat 230. In other embodiments, the base can be an integrated profile structure formed on the top of the cabinet 910, which bears the function of the base. In still other embodiments, the base 600 can also be arranged on the door body 920, and the top door piece 320 or the top door piece 380 is directed or abutted on the cabinet 910, and the rotating door piece 220 is hinged on the cabinet 910 through the hinge seat 230. In some embodiments, the refrigerator is provided with a plurality of door bodies 920, and an independent door opening and closing device can be arranged corresponding to each door body 920, to realize the automatic door opening and closing function of the multi-door refrigerator.

[0213] Referring to Figure 28 and Figure 29 When the door opening operation is performed, the linkage gear 120 rotates forward to directly push the door body 920 through the door opening mechanism 300, and when the linkage gear 120 rotates to a certain angle, the continuous pushing force reaches a critical value to break through the door opening resistance, and the door body is pushed open and maintained at a certain angle, and when the linkage gear 120 continues to rotate forward, the first tooth part 313 is disconnected from the second tooth part 1221, and the linkage rod 310 is pulled tight on the first stopper 630 under the action of the elastic limiting part 370; in the process, the driving part 210 of the door rotating mechanism 200 moves from the first pushing part 1231 to the second pushing part 1232 until the driving part 210 abuts against the second pushing part 1232, and then the driving part 210 continues to rotate forward, and the door body 920 is pushed until it reaches the set limit position, thereby realizing the door opening and door rotating operation.

[0214] Referring to Figure 23 , Figure 24 , Figure 25 and Figure 30 When the door closing operation is performed, the linkage gear 120 reverses, and when the first pushing part 1231 abuts against the driving part 210, it continues to reverse and pushes the driving part 210 to reverse, thereby pulling the door rotating part 320 and the door body 920 to rotate towards the cabinet 910 until the cabinet is closed, thereby realizing the door closing operation; in the process, the linkage gear 120 rotates to a certain angle position, and the second tooth part 1221 is connected with the first tooth part 313 through meshing, thereby pushing the linkage part 310 to reverse until it reaches the initial position.

[0215] The beneficial effects of the present application at least include:

[0216] The door opening and closing device and the electric appliance provided by the present application realize automatic door opening and door rotating operations through the door opening mechanism and the door rotating mechanism driven by the driving mechanism, thereby improving the convenience and safety of the door opening operation. The door body can be pushed by the door opening mechanism, and the door body is pushed open to a set angle by accumulating force to break through the door opening resistance, thereby greatly reducing the resistance of the subsequent door rotating mechanism and improving the automatic door opening speed. Specifically, the driving part provided on the base can be a pushing arm, and the pushing efficiency in the door rotating stage can be greatly improved through the lever principle under the pushing of the driving mechanism; and the door rotating part is rotatably connected to the driving part and the door body, so that the door rotating part can adapt to the deflection posture change of the linkage part by deflecting relative to the driving part and the door body, and is always stably hinged to the door body, thereby improving the pushing and pulling effect in the door rotating process. The hinge point A and the rotation center B are located on the two sides of the line connecting the hinge point C and the hinge point D, forming a convex quadrilateral, thereby avoiding the extreme state that the door rotating part 220 is not forced due to the deflection amount of the driving part 210 and the door rotating part 220 exceeding 180 degrees in the rotating process, and the door body 920 cannot be rotated, and also limiting the opening range of the door body 920.

[0217] In the present application, unless specifically defined and limited otherwise, the terms "connect", "fixed", and the like should be understood broadly, for example, "fixed" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0218] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0219] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features indicated, or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.

[0220] In the description of the present application, unless specifically defined and limited otherwise, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Below", "below" and "below" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0221] In the description of the application, reference is made to descriptive terms such as "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" meant to convey 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 application. The illustrative appearances of the above-described terms in various places in the specification are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Moreover, the application extends to additional acts and

[0222] Although preferred embodiments of the application have been described herein, those skilled in the art will readily devise many additional variations of these preferred embodiments that will fall within the scope of the present application. Accordingly, the appended claims are intended to encompass all such variations as falling within the scope of the application.

[0223] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A door opening and closing device, characterized in that: include: The top door mechanism and the rotating door mechanism are driven by the same driving mechanism, and the driving mechanism includes: Driver; a first transmission assembly; a second transmission assembly connected to the driver and detachably connected to the first transmission assembly; A clutch push assembly, comprising a push sleeve sleeved on the second transmission assembly and a push rod for pushing the push sleeve, wherein the push rod pushes the push sleeve to push the second transmission assembly to separate or connect with the first transmission assembly; A linkage gear connected to the first transmission assembly and simultaneously connected to the top door mechanism and the rotating door mechanism; The second transmission assembly includes a first transmission member, the first transmission member includes a connecting end detachably connected to the first transmission assembly and a pushing end embedded in the pushing sleeve; A plurality of spaced-apart limiting bosses are provided on the outer circumferential surface of the pushing end, and the limiting bosses slidably contact the inner surface of the pushing sleeve; The first transmission assembly is provided with a slot, and the connecting end is detachably engaged in the slot; Internal teeth are provided on the wall surface of the clamping groove, and external teeth that can mesh with the internal teeth are provided on the outer peripheral surface of the connecting end.

2. The door opening and closing device according to claim 1, wherein: The first transmission assembly is a first transmission gear meshed with the linkage gear, and the clamping groove is provided at an axial end portion of the first transmission gear.

3. The door opening and closing device according to claim 1, wherein: The first transmission member further includes a support flange arranged between the connecting end and the pushing end, and the support flange is placed on the end surface of the pushing sleeve.

4. The door opening and closing device according to claim 1, wherein: The second transmission assembly includes a first transmission member and a second transmission member; The first transmission member is detachably connected to the first transmission assembly. The first transmission member is sleeved on the second transmission member and can rotate along with the second transmission member.

5. The door opening and closing device according to claim 4, characterized in that: The second transmission assembly further includes a transmission shaft, and the second transmission member and the first transmission assembly are both sleeved on the transmission shaft.

6. The door opening and closing device according to claim 4, characterized in that: An axial through groove is provided on the inner surface of the first transmission member, and a clamping block is provided on the outer surface of the second transmission member. When the first transmission member is sleeved on the second transmission member, the clamping block is axially slidably embedded in the axial through groove.

7. The door opening and closing device according to claim 1, wherein: The pushing sleeve pushes the second transmission assembly along a first direction, the pushing sleeve is provided with a first pushing surface, and the push rod is provided with a second pushing surface in contact with the first pushing surface, wherein the angle between the first direction and the first pushing surface is an acute angle.

8. The door opening and closing device according to claim 7, wherein: The push sleeve is provided with two first push surfaces, and the two first push surfaces are arranged on opposite sides of the push sleeve. The push rod includes two push arms arranged in parallel and a connecting portion connecting the two push arms. The ends of the two push arms away from the connecting portion are provided with the second push surfaces, and the two second push surfaces are respectively in contact with the two first push surfaces.

9. The door opening and closing device according to claim 1, wherein: The pushing sleeve pushes the second transmission assembly along the first direction; The push sleeve is provided with two first push grooves, the two first push grooves are arranged on opposite sides of the push sleeve, and the groove walls of the two first push grooves are respectively provided with first push surfaces; The push rod includes two push arms arranged in parallel and a connecting portion connecting the two push arms. Second push surfaces are provided on the ends of the two push arms away from the connecting portion, and the two second push surfaces are in contact with the two first push surfaces respectively.

10. The door opening and closing device according to claim 9, characterized in that: A limit baffle is provided on one side of each of the two push arms away from the other push arm, and the two limit baffles are arranged on two opposite sides of the push sleeve.

11. The door opening and closing device according to claim 7 or 9, characterized in that: The clutch pushing assembly further comprises a linear driver, which is connected to the push rod and drives the push rod to push the pushing sleeve.

12. The door opening and closing device according to any one of claims 1 to 10, characterized in that: The linkage gear also includes: A body rotatably disposed on the base; a first pushing portion, provided on the body, for pushing the revolving door mechanism to rotate when the body rotates forward, so as to open the door body; The second pushing portion is arranged on the main body and pushes the rotary door mechanism to rotate when the main body rotates in the opposite direction, so as to close the door body.

13. The door opening and closing device according to claim 12, wherein: The revolving door mechanism rotates at a first angle between the first pushing portion and the second pushing portion, and the body is coaxially rotatably arranged on the base with the revolving door mechanism.

14. The door opening and closing device according to claim 13, wherein: The door-lifting mechanism includes a first tooth portion, and the linkage gear also includes a third pushing portion provided with a second tooth portion meshing with the first tooth portion for transmission. When the main body rotates forward, the third pushing portion drives the door-lifting mechanism to push the door body.

15. The door opening and closing device according to claim 12, wherein: A rotation limiting groove is provided on the main body, and the main body and the rotating door mechanism are coaxially rotatably arranged on the base, and the rotating door mechanism can rotate in the rotation limiting groove, and the first pushing part and the second pushing part are the groove walls of the rotation limiting groove in the radial direction of the linkage gear.

16. The door opening and closing device according to any one of claims 1 to 10, characterized in that: The revolving door mechanism includes a driving member and a revolving door member, the first end of the revolving door member is rotatably set on the door body, the second end of the revolving door member is rotatably connected to the first end of the driving member, and the second end of the driving member is rotatably set on the base; the linkage gear can drive the driving member to rotate to drive the revolving door member to rotate the door body.

17. The door opening and closing device according to any one of claims 1 to 10, characterized in that: The door-lift mechanism comprises: a linkage member, wherein a first end of the linkage member is rotatably disposed on the base, and a second end of the linkage member is connected to the linkage gear; and a door-lifting member, wherein a first end of the door-lifting member is rotatably connected to the linkage member, and a second end of the door-lifting member is used for pushing up the door body; The linkage gear drives the linkage member to rotate, thereby driving the door-lifting member to push up the door body.

18. The door opening and closing device according to claim 17, wherein: The top door mechanism also includes: The elastic limiting member is connected to the linkage member and the base respectively, and maintains the linkage member at a preset angle.

19. The door opening and closing device according to claim 17, wherein: A waist-shaped hole is provided on one of the top door component and the linkage component, and a pin is provided on the other component. The pin is rotatably arranged in the waist-shaped hole.

20. The door opening and closing device according to any one of claims 1 to 10, characterized in that: The door-pushing mechanism is rotatably arranged on the base, and includes: a first tooth portion meshing with the linkage gear and a door-pushing portion for pushing the door body. The linkage gear drives the door-pushing mechanism to rotate relative to the base through the first tooth portion, thereby driving the door-pushing portion to push the door body.

21. The door opening and closing device according to claim 20, wherein: The top door mechanism also includes: a limiting member, disposed on the base, wherein the door-lift mechanism comes into conflict with the limiting member when the door-lift mechanism rotates to a preset angle relative to the base; and The tensioning member has two ends connected to the door lifting mechanism and the base respectively, so as to maintain the door lifting mechanism at the preset angle.

22. The door opening and closing device according to claim 20, wherein: The top door mechanism is in a cam shape, and the first tooth portion and the top door portion are located on a wheel rim of the cam.

23. An electrical device, characterized in that: It comprises a box body, a door body rotatably arranged on the box body, and a door opening and closing device according to any one of claims 1 to 22, wherein the base of the door opening and closing device is arranged on the box body.

24. The electrical device according to claim 23, characterized in that: The electrical appliance is one of a refrigerator, a disinfection cabinet and a dishwasher.

Images