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 rotating door mechanism, a top door mechanism and a driving mechanism. The rotating door mechanism comprises a driving member and a rotating door member. One end of the rotating door member is rotationally arranged on a door body, and the other end is rotationally connected with one end of the driving member. The other end of the driving member is rotationally arranged on a base. The top door mechanism comprises a linkage member and a top door member. One end of the linkage member is rotationally arranged on the base, and the other end is connected with the driving mechanism. One end of the top door member is rotationally connected with the linkage member, and the other end is used for pushing the door body. The driving mechanism is used for driving the driving member and the linkage member to rotate. The switch door device and the electrical appliance provided by the application can improve the convenience and safety of door opening.

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, so as 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 improved to a certain extent, and usually a large force is needed to pull it open, which is inconvenient to use. 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 body 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:

[0006] A door rotating mechanism, the door rotating mechanism comprises a driving member and a door rotating member, one end of the door rotating member is rotatably arranged on the door body, the other end is rotatably connected with one end of the driving member, and the other end of the driving member is rotatably arranged on the base;

[0007] A door lifting mechanism, the door lifting mechanism comprises a linkage member and a door lifting member, one end of the linkage member is rotatably arranged on the base, the other end is connected with a driving mechanism, one end of the door lifting member is rotatably connected with the linkage member, and the other end is used for pushing the door body,

[0008] A driving mechanism for driving the driving member and the linkage member to rotate.

[0009] In some embodiments, the driving mechanism comprises a linkage gear connected with the driving member and the door lifting mechanism, the linkage gear can drive the driving member to rotate to drive the door rotating member to rotate the door body.

[0010] In some embodiments, the door lifting mechanism further comprises:

[0011] An elastic limiting member connected with the linkage member and the base respectively, and maintaining the linkage member at a preset angle.

[0012] In some embodiments, the elastic limiting member comprises a tension spring, two ends of the tension spring are respectively connected with the linkage member and the base, and the linkage member is maintained at a preset angle.

[0013] In some embodiments, the top door mechanism further comprises a first stopper arranged on the base, and the top door mechanism abuts against the first stopper when the top door mechanism is rotated to the preset angle relative to the base.

[0014] In some embodiments, an elastic member accommodating groove is arranged on the first stopper, and one end of the elastic limiting member is connected in the elastic member accommodating groove.

[0015] In some embodiments, a waist-shaped hole is arranged on one of the top door member and the linkage member, and a pin shaft is arranged on the other, and the pin shaft is rotationally arranged in the waist-shaped hole.

[0016] In some embodiments, the linkage gear further comprises:

[0017] a body rotationally arranged on the base;

[0018] a first pushing portion arranged on the body, and pushing the driving member to rotate when the body rotates in a forward direction, and driving the door member to open through the driving member;

[0019] a second pushing portion arranged on the body, and pushing the driving member to rotate when the body rotates in a reverse direction.

[0020] In some embodiments, the driving member rotates a first angle between the first pushing portion and the second pushing portion, and the body is coaxially arranged on the base with the driving member.

[0021] In some embodiments, the linkage gear further comprises a third pushing portion connected with the top door mechanism, and driving the top door mechanism to push the door body when the body rotates in the forward direction.

[0022] In some embodiments, the linkage member comprises a first tooth portion, and the third pushing portion is provided with a second tooth portion meshing and driving the first tooth portion.

[0023] In some embodiments, the first angle is less than or equal to a second angle, and the second angle is an angle of rotation of the linkage gear from the first tooth portion and the second tooth portion starting to mesh to the first tooth portion and the second tooth portion separating.

[0024] In some embodiments, the body is provided with a rotation limiting groove, the body is coaxially arranged on the base with the driving member, the driving member can rotate in the rotation limiting groove, and the first pushing portion and the second pushing portion are groove walls of the rotation limiting groove in a radial direction of the linkage gear.

[0025] In some embodiments, the door mechanism further comprises:

[0026] A reset spring is connected at two ends to the body and the driving member respectively to pull the driving member to abut against the second pushing part after the door body is opened.

[0027] In some embodiments, the driving member and the linkage gear are coaxially rotatably arranged on the base.

[0028] In another aspect, the application provides an electric appliance comprising a cabinet, a door body rotatably arranged on the cabinet, and the door opening and closing device.

[0029] In some embodiments, the electric appliance is one of a refrigerator, a sterilizer, and a dishwasher.

[0030] The application has at least the following beneficial effects:

[0031] The door opening and closing device and the electric appliance provided by the application improve the convenience and safety of door opening operation. The door body can be pushed open to a set angle by the door opening and closing device, thereby greatly reducing the resistance of the door turning mechanism and improving the automatic door opening speed. The door opening and closing device can be a door opening and closing arm rotatably arranged on the base, which greatly improves the door opening efficiency by using the lever principle under the pushing of the driving mechanism. The door opening and closing arm is rotatably connected to the linkage member, so that the door opening and closing arm can be deflected relative to the linkage member to adapt to the deflection posture change of the linkage member, thereby stably pushing the door body and improving the door opening effect. The door turning mechanism can be a door turning arm rotatably arranged on the base, which greatly improves the door turning efficiency by using the lever principle under the pushing of the driving mechanism. The door turning arm is rotatably connected to the driving member and the door body, so that the door turning arm can be deflected relative to the driving member and the door body to adapt to the deflection posture change of the linkage member, thereby stably hinged to the door body and improving the pushing and pulling effect during the door turning process. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0033] Figure 1 The structure diagram of the door opening and closing device provided by the embodiment of the application;

[0034] Figure 2 The structure diagram of the door opening and closing device provided by the embodiment of the application;Figure 1 Structure diagram of top door mechanism of switch door device in

[0035] Figure 3 Structure diagram of rotating door mechanism of switch door device in Figure 1 Structure diagram of top door mechanism of switch door device in

[0036] Figure 4 Structure diagram of rotating door mechanism of switch door device in Figure 1 Another structure diagram of top door mechanism of switch door device in

[0037] Figure 5 Assembly state top view of driving member and linkage gear of switch door device in Figure 1

[0038] Figure 6 Assembly state front view of driving member and linkage gear of switch door device in Figure 1

[0039] Figure 7 Assembly state bottom view of linkage member and linkage gear of switch door device in Figure 1

[0040] Figure 8 Top view of linkage gear of switch door device in Figure 1

[0041] Figure 9 Front view of linkage gear of switch door device in Figure 1

[0042] Figure 10 Bottom view of linkage gear of switch door device in Figure 1

[0043] Figure 11 Base diagram of switch door device in Figure 1

[0044] Figure 12 Assembly diagram of switch door device in Figure 1

[0045] Figure 13 Assembly state top view of switch door device in Figure 1

[0046] Figure 14 Assembly state bottom view of switch door device in Figure 1

[0047] Figure 15 Refrigerator assembly arrangement diagram of switch door device in Figure 1

[0048] Figure 16 ​​​​​​​​​​​for Figure 1 Schematic diagram of the top door state of the door opening and closing device;

[0049] Figure 17 for Figure 1 Schematic diagram of the door opening and closing device in the door opening and closing state;

[0050] Figure 18 for Figure 1 Schematic diagram of the closed door state of the door opening and closing device.

[0051] In the attached figure:

[0052] 100 - driving mechanism, 110 - driver, 120 - linkage gear, 121 - third tooth portion, 122 - third pushing portion, 1221 - second tooth portion, 123 - rotation limiting groove, 1231 - first pushing portion, 1232 - second pushing portion, 124 - return spring accommodating groove, 125 - second fixing seat;

[0053] Swing door mechanism 200, 210 - driving member, 211 - coaxial rotating shaft, 212 - first fixed seat, 213 - extension limit portion, 214 - pivot shaft, 220 - swing door member, 221 - first end of swing door member, 230 - hinged seat, 240 - return spring;

[0054] 300 - door lift mechanism, 310 - linkage member, 311 - linkage member pivot hole, 312 - reduced thickness groove, 313 - first tooth portion, 314 - third fixing seat, 320 - door lift member, 322 - waist-shaped hole, 330 - push seat, 340 - shock-absorbing pad, 350 - linkage member pivot shaft, 360 - pin, 370 - elastic limiter, 380 - door lift member, 381 - fourth tooth portion, 382 - door lift member, 383 - reinforcing rib;

[0055] 600 - base, 610 - drive motor fixing groove, 620 - second stopper, 621 - stop profile, 630 - first stopper, 631 - elastic member accommodating groove, 632 - guide groove, 633 - first stop surface, 634 - second stop surface, 635 - fourth fixing seat, 641 - third stopper, 642 - fourth stopper, 650 - coaxial shaft seat;

[0056] 910-cabinet, 920-door. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0058] It should be noted that all directionality indications in the embodiments of the present application are only used to explain the relative position relationship, motion condition and the like between components in a certain posture, and if the certain posture changes, the directionality indications also change accordingly.

[0059] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplification of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0060] The present application will be described below in conjunction with the accompanying drawings and specific embodiments:

[0061] 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 a certain extent, and at the same time, to a certain extent, solve the technical problems of large initial resistance, inconvenient operation, unsmooth operation and certain safety risks in manual opening of refrigerator door.

[0062] The door opening and closing device of the present embodiment is used to assemble to an equipment 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 electrical equipment can be a refrigerator, a sterilizer, a dishwasher and the like.

[0063] First, the electrical equipment is introduced, as shown in Figure 1 is a partial structure schematic diagram of an electrical equipment of the present embodiment. Specifically, the electrical equipment 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. The door body 920 is rotated on the box body 910 to close or open the taking opening of the box body 910.

[0064] Referring to Figure 1 In some embodiments, the door opening and closing 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, which can drive the rotating door mechanism 200 and the top door mechanism 300, so as to realize the full rotation operation and the initial top door operation of the door body 920.

[0065] 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 for carrying the driving mechanism 100, the swing door mechanism 200 and the top door mechanism 300; thus 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 as a whole, so as to realize the standardized installation of the base 600 on the electrical appliance, ensure the stability of the installation and guarantee the assembly precision and reliability; on the other hand, when the base 600 is assembled on the refrigerator or other electrical appliance as a whole, the installation is efficient and reliable.

[0066] In the present 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.

[0067] In some embodiments, the driving mechanism 100 outputs driving force to drive the swing door mechanism 200 and the top door mechanism 300 to rotate relative to the base 600, so as to rotate the door body 920 and push the door body 920. For example, when the door is automatically opened, the door body 920 is first pushed by the top door mechanism 300 until the door body 920 breaks away from the adsorption force, and then the door body 920 is continuously rotated by the swing door mechanism 200, so as to realize the coordinated and smooth automatic opening operation; when the door is closed, the door body 920 is first deflected towards the cabinet 910 by the swing door mechanism 200 driven by the driving mechanism 100 until the door is closed, and during the process, the top door mechanism 300 is reset by the driving mechanism 100.

[0068] 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 deflection speed in the top door stage, so as to quickly and reliably push open the door body 920 by the top door mechanism 300; when the swing door mechanism 200 is put into operation, a higher swing speed can be obtained under the condition that the swing force is small, so as to quickly complete the swing operation and realize the opening to the position.

[0069] In some embodiments, the swing door mechanism 200 or the top door mechanism 300 can be arranged in cooperation with the driving mechanism 100, for separately implementing the door opening and closing 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 adsorption resistance, negative pressure and other opening resistance between the door body 920 and the cabinet 910, so as to open the door body 920 by a preset angle, so as to facilitate the subsequent automatic or manual opening operation.

[0070] Referring to Figure 2In some embodiments, the top door mechanism 300 comprises a linkage 310 connected to the driving mechanism 100 for obtaining driving force, and a top door piece 320 for pushing the door body 920 to rotate, the top door piece 320 being connected to the linkage 310 so as to be driven by the linkage 310 to perform the top door operation and reset.

[0071] In some embodiments, one end of the linkage 310 is rotatably arranged on the base 600 so as to be deflected around a rotation axis under the driving of the driving mechanism 100, and the other end is connected to the driving mechanism 100; one end of the top door piece 320 is rotatably connected to the linkage 310 so as to move along an arc-shaped track with the linkage 310, and the other end of the top door piece 320 pushes the door body 920 after abutting against the door body 920. The deflection structure of the linkage 310 can ensure the pushing effect while reducing the front pressure on the top door mechanism 300 to some extent, thereby ensuring the structural stability and service life and improving the reliability of the top door operation.

[0072] In some embodiments, in order to further improve the efficiency of the top door operation, the top door piece 320 is rotatably connected to the linkage 310 so that the top door piece 320 can be deflected relative to the linkage 310 to adjust the posture of the top door piece 320, and the pointing direction of the top door piece 320 can be adaptively adjusted according to the installation conditions so as to be directed to the door body 920 to ensure high-efficiency pushing. On the other hand, the top door mechanism 300 can adapt to the requirements 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.

[0073] Referring to Figure 1 and Figure 3 In some embodiments, the rotary door mechanism 200 is arranged to rotate the driving piece 210 and the rotary door piece 220 connected thereto, the driving piece 210 being driven by the driving mechanism 100 to obtain driving force, and the rotary door piece 220 being connected between the door body 920 and the driving piece 210 to push and pull the door body 920 relative to the cabinet 910 through the rotary door piece 220 under the driving of the driving piece 210, so as to realize the opening and closing operation.

[0074] Referring to Figure 3 and Figure 5In some embodiments, in order to adapt to the large deflection amplitude of the door body 920, ensure the efficiency and amplitude of the rotating door action to meet the door opening and closing requirements, the first end of the rotating door piece 220 is rotatably arranged on the door body 920, the second end of the rotating door piece 220 is pivotally connected with the first end of the driving piece 210, and the second end of the driving piece 210 is rotatably arranged on the base 600, forming a two-section rotating connecting rod push-pull structure, so that the push-pull action and the deflection action of the rotating door piece 220 can be realized by driving the driving piece 210 to rotate, respectively meeting the requirements of the fixed-point push-pull force of the door body 920, and matching and adapting to the large-angle deflection state change of the door body 920, ensuring the stability and reliability of the push-pull door opening and closing operation of the rotating door mechanism 200. The driving mechanism 100 drives the driving piece 210 and the top door mechanism 300 through the setting of the linkage gear 120, realizes the simplified transmission structure, and helps to ensure the coordinated control of the rotating door operation and the top door operation.

[0075] The top door mechanism 300 and the rotating door mechanism 200 driven by the driving mechanism realize automatic top door operation and rotating door operation respectively, improving the convenience and safety of door opening operation. The door body 920 can be pushed by the top door mechanism 300, and the door body 920 is pushed open to a set angle to greatly reduce the resistance of the subsequent rotating door mechanism 200, thereby improving the automatic door opening speed. Specifically, the linkage piece 310 rotatably arranged on the base 600 is a pushing arm, which greatly improves the top door efficiency by using the lever principle under the pushing of the driving mechanism 100; and the top door piece 320 is rotatably connected to the linkage piece 310, so that the top door piece 320 can adapt to the deflection posture change of the linkage piece 310 by deflection, and always stably push on the door body 920, improving the top door effect. The driving piece 210 rotatably arranged on the base 600 is a pushing arm, which greatly improves the top door efficiency by using the lever principle under the pushing of the driving mechanism 100; and the rotating door piece 220 is rotatably connected to the driving piece 210 and the door body 920, so that the rotating door piece 220 can adapt to the deflection posture change of the linkage piece 310 by deflection, and always stably hinge on the door body 920, improving the push-pull effect in the rotating door process.

[0076] Firstly, the detailed structure of the top door mechanism 300 is introduced as follows:

[0077] Referring to Figure 2 In some embodiments, the top door piece 320 is rotatably connected to the middle part of the linkage piece 310, leaving enough deflection space for the top door piece 320 to avoid interference with other structures.

[0078] In order to ensure the high efficiency of the top door, the pushing direction of the top door piece 320 can be set to be substantially perpendicular to the closed door body 920. Since the top door piece 320 rotates following the linkage 310, the pushing direction also deflects to a certain extent. In order to realize the stable application of the pushing force of the top door piece 320 to the door body 920 as much as possible, a waist-shaped hole 322 can be formed on the top door piece 320, a pin shaft 360 can be arranged on the linkage 310, and 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 be used to leave a sliding space for the pin shaft 360, so that the top door piece 320 can slide along the length direction of the waist-shaped hole 322 without moving following 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 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.

[0079] In some embodiments, in order to meet the requirements of large pushing force and pushing stroke with small opening specifications, the length direction of the waist-shaped hole 322 can be arranged to be perpendicular to the pushing 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 to be perpendicular to the pushing direction of the top door piece 320, but can have a certain angle, as long as the moving stroke of the pin shaft 360 has a component perpendicular to the pushing direction of the top door piece 320, so as to ensure the stability of the axial pushing posture of the top door piece 320. For example, the angle can be set to 30 degrees, 45 degrees or 60 degrees.

[0080] Referring to Figure 2 In some embodiments, in order to ensure the force balance of the top door piece 320, the linkage 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.

[0081] Referring to Figure 2 In some embodiments, the waist-shaped hole 322 can be arranged on the linkage 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 310 can also be arranged above the top door piece 320, which is not limited herein.

[0082] Referring to Figure 2In some embodiments, in order to reduce the overall installation height, reduce the size of the device and the installation space requirement and the material cost, and ensure the structural strength of the linkage 310, a reduced-thickness groove 312 can be formed on the linkage 310, thereby reducing the superimposed thickness of the linkage 310 and the top door piece 320. The width of the reduced-thickness groove 312 can be set to be slightly larger than the deflected area width of the waist-shaped hole 322 area, so as to avoid the side wall of the reduced-thickness groove 312 blocking the relative deflection of the linkage 310 and the top door piece 320.

[0083] Referring to Figure 11 In some embodiments, under the influence of the friction between the pin shaft 360 and the waist-shaped hole 322, the top door piece 320 still has a tendency to move along the direction perpendicular to the pushing direction during the deflection of the linkage 310. Therefore, a guide groove 632 can be formed 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 pushing 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 pushing 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.

[0084] In some embodiments, in order to ensure the smooth sliding of the top door piece 320, a layer of self-lubricating material can be arranged on the groove surface of the guide groove 632, or a layer of self-lubricating material can be arranged on the part of the top door piece 320 corresponding to the guide groove 632, or both the groove surface of the guide groove 632 and the part of the top door piece 320 corresponding to the guide groove 632 are arranged with a layer of self-lubricating material, or are directly formed of self-lubricating material, thereby further reducing the frictional effect.

[0085] Referring to Figure 2 In some embodiments, considering the influence of assembly accuracy and fitting gap, the pushing seat 330 can be hingedly connected to 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 first abut against the door body 920 and can be self-adaptively deflected, so that the pushing seat 330 and the door body 920 realize face-to-face abutment, the size and posture of the contact surface are stable, the pushing direction and size of the top door are stable, and the risk of damage to the door body or the top door piece 320 caused by excessive contact pressure in local contact pushing is reduced.

[0086] In some embodiments, in order to improve the adaptability in various directions, the pushing seat 330 and the top door piece 320 can be hingedly connected in a universal hinge structure.

[0087] Referring to Figure 2In some embodiments, in order to reduce the contact vibration between the pushing seat 330 and the door body 920, and the abrasion of the pushing seat 330, a damping pad 340 can be arranged on the pushing seat 330. The damping pad 340 can be made of a material with low friction coefficient.

[0088] Referring to Figure 2 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.

[0089] In some embodiments, considering that in the top door operation, the opening degree of the top door is usually set based on the required angle of breaking through the adsorption force of the door body 920 to the box body 910 and the rotation door 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 preset angle of deflection can be used to correspondingly calibrate the arrangement position of the linkage 310 on the base 600 according to the matching state, so as to form the linkage 310 corresponding to the preset angle or preset position on the base 600.

[0090] Referring to Figure 2 In order to ensure the control accuracy of the rotation angle of the linkage 310, an elastic limiting piece 370 can be connected between the base 600 and the linkage 310, so as to always pull the linkage 310 to the preset position. This can ensure the control accuracy, and also ensure the alignment accuracy and stability of the engagement connection with the driving mechanism 100.

[0091] In some embodiments, the elastic limiting piece 370 can be a tension spring, and the two ends thereof are respectively connected with the linkage 310 and the base 600. The stable elastic tension force is applied through the elastic elongation deformation. The tension spring can adapt to the deflection process of the linkage 310 based on the self-adaptive deformation, and ensure the stability of the elastic tension effect. In other embodiments, the elastic limiting piece 370 can also be a spring sheet or other forms of elastic piece.

[0092] Referring to Figure 2 , Figure 5 and Figure 11 In some embodiments, a third fixing seat 314 can be arranged on the linkage 310, and a fourth fixing seat 635 can be arranged on the base 600, which correspond to the two ends of the tension spring respectively, so as to improve the stability of the tension spring under the action of deflection and deformation.

[0093] Referring to Figure 11In some embodiments, a first stopper 630 may be further provided on the base 600 and arranged at the end point of the preset deflection stroke of the linkage member 310. When the top door mechanism 300 is deflected to a preset angle relative to the base 600, it contacts the first stopper 630, thereby limiting excessive deflection of the linkage member 310 and limiting further deflection of the top door mechanism 300 as a whole. At the same time, it can also ensure that the first tooth portion 313 and the drive mechanism 100 are stably engaged with each other.

[0094] See also Figure 11 In some embodiments, the linkage member 310, driven by the drive mechanism 100, undergoes both a top-opening deflection and a reset deflection. Consequently, it deflects in two opposite directions relative to the base 600, resulting in two deflection limit positions. To ensure the position control accuracy of the linkage member 310, a first stop surface 633 and a second stop surface 634 can be provided on the first stop member 630, positioned at the two end points of the linkage member 310's preset deflection stroke, respectively, to achieve bidirectional position limiting. The first stop surface 633 and the second stop surface 634 can be configured to match the outer profile of the linkage member 310, thereby enhancing the reliability of the contact limit.

[0095] In some embodiments, the first stopper 630 can be an independent structural member mounted on the base 600, with its height slightly higher than the arrangement height of the linkage member 310, thereby achieving a stopping function. In other embodiments, the first stopper 630 can also be directly molded on the base 600, forming an integrated structure with a stopper surface or stopper portion on the base 600.

[0096] In some embodiments, the first stopper 630 may be arranged in conjunction with the elastic limiting member 370 , that is, by arranging the installation position of the elastic limiting member 370 , the linkage member 310 may be elastically stretched or elastically pressed toward the first stopper 630 .

[0097] See also Figure 11 In some embodiments, an elastic member receiving groove 631 can be opened on the first stop member 630, and the first end of the elastic limit member 370 can be connected to the elastic receiving groove 631. This not only enables the assembly of the elastic limit member 370 on the base 600, but also protects the elastic limit member 370 through the groove structure to prevent scratches and collisions from affecting its deformation state, thereby ensuring the reliability and accuracy of the positioning control of the linkage member 310.

[0098] See also Figure 5 In some embodiments, the fourth fixing seat 314 can be arranged on the linkage member 310 between the first tooth portion 313 and the pin shaft 360, that is, between the force point and the force application point of the linkage member 310, thereby improving the elastic limiting effect to a certain extent, and improving the performance of the linkage member 310 in resisting vibration and external interference.

[0099] Referring to Figure 11 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 scraping and abutting of the elastic accommodating groove 631 affecting its deformation state, the groove body of the elastic accommodating groove 631 can be set as a fan-shaped form, leaving enough deflection space.

[0100] In some embodiments, the linkage 310 can be set as a plate, and the plate thickness direction is perpendicular to the deflection direction, so as to ensure the structural strength under the operating condition of the top door, and also to reduce the overall assembly thickness of the linkage 310 and reduce the installation height requirement. In other embodiments, the top door piece 320 can also be set as a plate, and the plate thickness direction is perpendicular to the deflection and pushing direction, which can reduce the overall assembly height.

[0101] Referring to Figure 7 In some embodiments, the first tooth part 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, and 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, while meeting the linkage function, the overall volume is reduced. In other embodiments, the waist-shaped hole 322 can also be arranged at the first end of the plate body of the top door piece 320, while meeting the function requirement of the top door, the length and width are reduced, and the overall volume is reduced.

[0102] In some embodiments, in order to improve the structural strength of the linkage 310 and the top door piece 320, a reinforcing rib can be arranged on the plate body thereof.

[0103] When assembled on an electrical appliance device with a cabinet 910 and a door body 920 hinged on it, the base 600 can be fixed on the cabinet 910, and the top door direction of the top door piece 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 positively deflect relative to the base 600, driving the top door piece 320 to slide along the guide groove 632 until it contacts the door body 920 and the pushing 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 reversely deflect relative to the base 600, driving the top door piece 320 to reversely slide along the guide groove 632 until it is reset.

[0104] Referring to Figure 4The top door mechanism 300 can also be provided as a top door member 380, which is pivotally arranged on the base 600 through a pivot shaft similar to the linkage member pivot shaft 350. The top door member 380 can be functionally divided into a fourth tooth portion 381 for engaging the driving mechanism 100, and a top door portion 382, which is driven to rotate by the driving mechanism 100 and pushes the door body 920 to open the door body 920 to a certain degree when the linkage gear 120 rotates.

[0105] In some embodiments, the top door member 380 is a fan-shaped structure, and the top door portion 382 is a side end corner of the fan-shaped structure. When the top door member 380 rotates, the door body 920 is pushed along an arc trajectory. In other embodiments, the top door member 380 can be provided as a cam structure, and the first tooth portion 381 and the top door portion 382 are arranged on the rim of the cam.

[0106] The detailed structure of the rotating door mechanism 200 is described as follows:

[0107] Referring to Figure 3 In some embodiments, a hinge seat 230 can be arranged on the door body 920 and hinged with the first end 221 of the rotating door member 220. In order to ensure the hinge reliability and stress uniformity, the hinge seat 230 can be provided as a U-shaped double-arm hinge seat, and the first end 221 of the rotating door member is embedded in the hinge seat and fixed through a hinge shaft.

[0108] In some embodiments, the driving member 210 and the rotating door member 220 can be provided as plates, so that the installation height can be greatly reduced in the stacked state.

[0109] Referring to Figure 6 In some embodiments, the hinge portions of the driving member 210 and the rotating door member 220 can also be provided in a reduced thickness form, so as to reduce the overall thickness and the installation height in the pivoted stacked state. The hinge portions of the driving member 210 and the rotating door member 220 can also be arranged on the lower plate-shaped member and the upper plate-shaped member, respectively, and the hinge shaft 214 can be pivotally arranged on the lower plate-shaped member and the upper plate-shaped member, respectively, to form a stable and reliable hinge structure. In other embodiments, one end of one of the driving member 210 and the rotating door member 220 can be provided as a U-shaped hinge seat, and the other end of the other member is embedded in the hinge seat and fixed through the hinge shaft 214.

[0110] The detailed structure of the linkage gear 120 is described as follows.

[0111] Referring to Figure 3 , Figure 8 , Figure 9 and Figure 10In some embodiments, the linkage gear 120 is an element of the direct drive driving member 210 and the top door mechanism 300, and its driving mode should satisfy the action mode of the deflectable driving member 210 and the top door mechanism 300 at the same time. The body of the linkage gear 120 can be arranged as a rotating member on the base 600, and is 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. In order to meet the driving requirement of the driving member 210, the first pushing portion 1231 and the second pushing portion 1232 can be arranged on the body in a relative manner, and a space sufficient to accommodate the driving member 210 is left between the two pushing portions, 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 to rotate the driving member 210, 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 to realize the opening and closing operations.

[0112] 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 to the door body 920 by the second pushing portion 1232 to push the rotating door member 220 to push the door body 920 to realize opening; 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 realize closing.

[0113] 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, and a certain deflection space is left, so that when the driving member 210 is deflected relative to the body, it needs to rotate by 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 is caused between the deflection of the linkage gear 120 and the deflection of the driving member 210, 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, and then the active rotating door operation is implemented by the rotating door mechanism 200 under the driving of the linkage gear 120.

[0114] In some embodiments, the initial position of the driving member 210 can be set against the first pushing portion 1231, so that during the door 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 as to accurately control the time of the second pushing portion 1232 pushing the driving member 210, 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.

[0115] 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 conditions.

[0116] Referring to Figure 1 、 Figure 3 and Figure 11 , 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 portion 1232 and the first pushing portion 1231, and the initial position of the driving member 210 can be set against the first pushing portion 1231 to limit the driving member 210 between the second stopper 620 and the first pushing portion 1231, thereby ensuring the reliability of the initial position. According to the width of the driving member 210 and the preset initial position, the position of the second stopper 620 can be set according to the distance between the second stopper 620 and the first pushing portion 1231 being slightly greater than the width of the driving member 210.

[0117] In some embodiments, a stop surface 621 matching the side wall profile of the driving member 210 can also be arranged on the second stopper 620, so as to ensure the uniformity of the stress of the driving member 210 in the stop state and avoid local stress concentration and structural damage.

[0118] In some embodiments, in order to improve the rotation control accuracy and reliability of the driving member 210, the body and the first end of the driving member 210 are 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, greatly improving the convenience. In other embodiments, the first end of the driving member 210 can also be arranged coaxially with the body, and only the driving member 210 is pivotally connected to the body of the linkage gear 120, forming a structure similar to a crankshaft drive; the driving member 210 can also be rotatably arranged on the base, and two push arms are extended and the first pushing part 1231 and the second pushing part 1232 are arranged on the two push arms respectively, and the driving member 210 is arranged between the beam push arms to realize the pushing operation. The specific position and structure specification of the matching arrangement can be determined according to the experiment.

[0119] In some embodiments, in order to drive the door opening mechanism 300, the body of the linkage gear 120 is provided with a third pushing part 122 for connecting and driving the door opening mechanism 300. During the door opening operation, the body of the linkage gear 120 rotates forward and drives the door opening mechanism 300 to push the door body 920. Conversely, during the door closing operation, the body of the linkage gear 120 reversely rotates and drives the door opening mechanism 300 to reset.

[0120] In some embodiments, the door opening operation only needs to break through the opening resistance mainly caused by the adsorption force between the door body 920 and the box body 910, and the door body 920 is pushed open by a small angle, so the pushing stroke of the door opening mechanism 300 is also small. Correspondingly, the stroke and time of the linkage gear 120 connection and the pushing of the door opening mechanism 300 can be set to be relatively short only in the door opening process, that is, after the door rotating mechanism 200 actively rotates the door, the door opening mechanism 300 can be disconnected from the linkage gear 120 or only continue to maintain for a small period of time and then separate, which simplifies the structure linkage state in the working state and avoids mutual interference.

[0121] Referring to Figure 7 In order to improve the time control accuracy and reliability of connection and disconnection, the door opening mechanism 300 can be provided with a first tooth part 313, and the third pushing part 122 is provided with a second tooth part 1221 engaged with the first tooth part 313 for transmission, so as to stably drive through the engagement transmission mode, and the pushing stroke can also be adjusted by controlling the length and number of teeth of the engaged tooth parts. During the door opening process, the linkage gear 120 rotates forward, that is, the door opening mechanism 300 is driven by the engagement transmission mode to push the door body 920 until the engagement is released, and the door opening mechanism 300 will no longer be stressed; during the door closing process, the linkage gear 120 reversely rotates, and when the rotation angle is set, the engagement connection between the first tooth part 313 and the second tooth part 1221 is re-established, and then the door opening mechanism 300 moves in the reverse door opening direction under the driving of the linkage gear 120 until it resets.

[0122] In some embodiments, the top door stroke control of the top door mechanism 300 can be controlled based on the deflection control of the driving member 210. Specifically, the angle of rotation of the linkage gear 120 during the time period when the first tooth portion 313 and the second tooth portion 1221 start to engage to disengage can be set as the second angle. Considering that the first angle is the angle of rotation of the body of the linkage gear 120 relative to the driving member 210 when the body starts to rotate, i.e., the time period during which the door rotation mechanism 200 delays the door rotation relative to the time when the body starts to rotate, the first angle can be controlled to be less than or equal to the second angle, i.e., the engagement time period is controlled based on this, so as to control the length of the engaged tooth portions.

[0123] In some embodiments, in order to ensure the smoothness of the connection between the top door process and the door rotation process, the difference between the first angle and the second angle can be controlled to be within 1 degree. That is, when the driving member 210 abuts against the second pushing portion 1232, the first tooth portion 313 and the second tooth portion 1221 still maintain a small amount of engagement or the last engaged tooth pair.

[0124] Referring to Figure 5 and Figure 6 In 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 and the driving member 210 can be coaxially arranged on the base 600, and the coaxial rotating shaft 211 can be arranged in the rotation limiting groove 123, and the driving member 210 can be rotatably arranged in the rotation limiting groove 123, and the first pushing portion 1231 and the second pushing portion 1232 can be arranged as the groove wall of the rotation limiting groove 123 in the radial direction of the linkage gear 120, i.e., as a fan-shaped groove. By accommodating the driving member 210 in the rotation limiting groove 123, the overall assembly height is reduced, and the sink groove structure can also effectively protect the impact resistance and vibration resistance of the pushing area of the driving member 210, and ensure the reliability of the structure.

[0125] In some embodiments, in order to ensure that the driving member 210 is in the initial position when abutting against the first pushing portion 1231 and that the position and posture of the driving member 210 are not affected by vibration, a reset spring 240 can be arranged, and the two ends of the reset spring 240 are connected to the body of the linkage gear 120 and the driving member 210, respectively, so as to maintain a tension between the driving member 210 and the first pushing portion 1231, and form a mutual approaching tendency; at the same time, the reset spring 240 guides the driving member 210 to abut against the second pushing portion 1231 after the door body 920 is opened. In other embodiments, the reset spring 240 can also be replaced by a spring leaf or other elastic material, and the limit can be achieved by elastic pushing, tensioning, etc.

[0126] 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.

[0127] Referring to Figure 8 , considering the deformation characteristics of the return spring 240, a return spring accommodating groove 124 is arranged on the body of the linkage gear 120, and the return spring 240 is arranged in the return spring accommodating groove 124, so that the return spring 240 can be assembled on the linkage gear 120, and the return spring 240 can be prevented from being impacted and scratched by the outside world, and the stability of the deformation state of the return spring 240 can be ensured. In the embodiment, the return spring accommodating groove 124 can also be arranged in a fan-shaped groove type, and the width of the side close to the rotation limiting groove 123 is relatively larger, so that the deflection process of the driving member 210 can be adapted, and the return spring 240 can be prevented from being abutted and deformed.

[0128] In some embodiments, the driving member 210 and the rotating door member 220 can be arranged in a rod shape, so that the rotating door structure with small size and high strength can be obtained.

[0129] In some embodiments, in order to improve the stability and to-position reliability of the linkage gear 120, a third stopper 641 and a fourth stopper 642 can be arranged on the base 600 and arranged at both ends of the rotation track of the linkage gear 120 respectively, so that the linkage gear 120 can be prevented from being excessively rotated, and the to-position accuracy of the forward rotation and the reverse rotation can be ensured. 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.

[0130] 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 arranged to be 90 degrees to 130 degrees; the rotation angle can be arranged to be 120 degrees or other specific degrees.

[0131] Referring to Figure 5 , 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, and the extension limiting part 213 can be abutted on the base 600, so that the unilateral lifting can be avoided. In other embodiments, a self-lubricating material layer can also be arranged on the extension limiting part 213, so that the contact friction coefficient can be reduced.

[0132] Referring to Figure 1In some embodiments, the switch door device is further provided with a clutch device 400 for driving mechanism 100 to be separably connected with the rotating door mechanism 200 and the top door mechanism 300, to realize stable and smooth transmission of driving torque, and to be able to flexibly cut off the connection with the driving mechanism 100, thereby avoiding the interference of the driving mechanism 100 during manual door opening and closing operation, and being able to cut off the connection of the driving mechanism 100 during device failure or environmental interference, to ensure the safety of the device structure and avoid mechanical damage. Of course, the clutch device can also not be provided, and specific configuration can be made according to needs, which will not be described here.

[0133] Referring to Figure 12 、 Figure 13 and Figure 14 In some embodiments, the base 600 is assembled by two matched independent housings, and corresponding fasteners such as screws can be locked. Windows can be opened in the area corresponding to the top door piece 320 or the top door piece 380, the rotating door piece 220 and the driving piece 210, 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, to ensure smooth execution of the door opening and closing operation, and also to take into account the orderly storage and protection of the internal functional structure.

[0134] In some embodiments, the rotating shaft reinforcing and fixing structure can be provided on the base 600 corresponding to the position of the coaxial rotating shaft 211 and the linkage shaft 350, to ensure the reliability of the pivoting structure.

[0135] Referring to Figure 11 In some embodiments, a coaxial rotating shaft seat 650 is provided on the base 600 for rotating and fixing the coaxial rotating shaft 211, to improve the structural stability and fully improve the impact resistance, to ensure that the rotating door mechanism 200 and the linkage gear 120 are stably and reliably coaxially connected to the base 600.

[0136] Referring to Figure 15 The present embodiment also provides a refrigerator, which is the above-mentioned electrical appliance, and the refrigerator comprises a cabinet 910 and a door body 920, and the door body 910 is rotatably arranged on the cabinet 910. A switch door device is connected between the cabinet 910 and the door body 920, for pushing or deflecting the door body 920 relative to the cabinet 910 to realize door opening and closing operation.

[0137] In some embodiments, the door opening and closing device is provided with a base 600 fixed on the cabinet 910, and the top door member 320 or the top door type member 380 is directed to or abuts against the door body 920, and the rotating door member 220 is hinged to the door body 920 through the hinge seat 230. In other embodiments, the base 600 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 member 320 or the top door type member 380 is directed to or abuts against the cabinet 910, and the rotating door member 220 is hinged to the cabinet 910 through the hinge seat 230.

[0138] In some embodiments, the refrigerator can be provided with a plurality of door bodies 920, and an independent door opening and closing device can be arranged for each door body 920 to realize the automatic door opening and closing function of the multi-door refrigerator.

[0139] Referring to Figure 16 and Figure 17 When the door opening operation is performed, the linkage gear 120 is positively rotated to directly push the door body 920 through the top door mechanism 300. When the linkage gear 120 is rotated by a certain angle, the accumulated pushing force reaches a critical value to break through the door opening resistance, the door body 920 is pushed open and maintained at a certain angle, and when the linkage gear 120 continues to be positively rotated, the first tooth part 313 is disconnected from the second tooth part 1221, and the linkage member 310 is pulled tight on the first stopper 630 under the action of the elastic limiting member 370. During the process, the driving member 210 of the rotating door mechanism 200 moves from the first pushing part 1231 to the second pushing part 1232 until the driving member 210 abuts against the second pushing part 1232, and then the driving member 210 continues to be positively rotated with the linkage gear 120, pushes the door body 920 until the set limit position is reached, and the door opening and rotating operation is realized.

[0140] Referring to Figure 18 When the door closing operation is performed, the linkage gear 120 is reversely rotated, and when the first pushing part 1231 abuts against the driving member 210, the linkage gear 120 continues to be reversely rotated and pushes the driving member 210 to be reversely rotated, pulls the rotating door member 320 and the door body 920 to rotate towards the cabinet 910 until the cabinet is closed, and the door closing operation is realized. During the process, the linkage gear 120 is rotated to a certain angle position, the second tooth part 1221 is connected with the first tooth part 313 through meshing, the linkage member 310 is reversely pushed, and the initial position is reached.

[0141] The beneficial effects of the present application at least include:

[0142] The present invention provides a door opening and closing device and electrical equipment. The driving mechanism realizes automatic door opening and door revolving operations respectively through a door-pushing mechanism and a door-swinging mechanism driven by a linkage gear, thereby improving the convenience and safety of the door opening operation. The door-pushing mechanism can push the door body, accumulate force to break through the door opening resistance, and push the door body to a set angle, thereby greatly reducing the resistance of the subsequent door-swinging mechanism and improving the automatic door opening speed. Specifically, the linkage member set on the base can be rotated to form a door-pushing arm. By utilizing the lever principle, the door-pushing efficiency can be greatly improved under the pushing of the driving mechanism; and the door-pushing member is rotatably connected to the linkage member, so that the door-pushing member can adapt to the deflection posture change of the linkage member by deflecting relative to the linkage member, and can always be stably pushed on the door body, thereby improving the door-pushing effect. By rotating the driving member set on the base to form a revolving door pushing arm, the lever principle is utilized and the pushing efficiency of the revolving door stage is greatly improved under the pushing of the driving mechanism; and the revolving door member is rotatably connected to the driving member and the door body, so that the revolving door member can adapt to the deflection posture change of the linkage member by deflecting relative to the driving member and the door body, and is always stably hinged to the door body, thereby improving the pushing and pulling effect of the revolving door.

[0143] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0144] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0145] In addition, the terms "first", "second", and the like in the description do not necessarily imply that the corresponding described features are important, substantial, or in any way superior to other features. The terms "first", "second", and the like are used to distinguish between different features, and are not used to designate a particular importance attached to the described features. Thus, a "first" and / or "second" feature can include one or more of the described 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 the combination, and when the combination of technical solutions contradicts each other or cannot be realized, it is considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0146] In the description of the present application, unless explicitly defined and limited, "on" or "under" of a first feature to a 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 "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. "Below", "under" and "underneath" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0147] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, a person skilled in the art can combine and combine different embodiments or examples described in the present specification

[0148] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0149] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A door opening and closing device, characterized in that: include: A revolving door mechanism, comprising a driving member and a revolving door member, wherein one end of the revolving door member is rotatably mounted on the door body and the other end is rotatably connected to one end of the driving member, and the other end of the driving member is rotatably mounted on the base; The door-lifting mechanism includes a linkage member and a door-lifting member. One end of the linkage member is rotatably arranged on the base, and the other end is connected to the driving mechanism. One end of the door-lifting member is rotatably connected to the linkage member, and the other end is used to push up the door body. A driving mechanism, used for driving the driving member and the linkage member to rotate; Wherein, one of the top door member and the linkage member is provided with a waist-shaped hole, and the other is provided with a pin shaft, and the pin shaft is rotatably arranged in the waist-shaped hole.

2. The door opening and closing device according to claim 1, wherein: The driving mechanism includes a linkage gear connected to the driving member and the door lifting mechanism. The linkage gear can drive the driving member to rotate so as to drive the rotating door member to rotate the door body.

3. The door opening and closing device according to claim 2, characterized in that: 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.

4. The door opening and closing device according to claim 3, characterized in that: The elastic limiting member includes: A tension spring is tightened, with both ends connected to the linkage member and the base respectively, to maintain the linkage member at a preset angle.

5. The door opening and closing device according to claim 3, characterized in that: The top door mechanism also includes: The first stopper is provided on the base, and the door-lift mechanism conflicts with the first stopper when it rotates to the preset angle relative to the base.

6. The door opening and closing device according to claim 5, characterized in that: An elastic member accommodating groove is formed on the first stopper, and one end of the elastic limiting member is connected to the elastic member accommodating groove.

7. The door opening and closing device according to any one of claims 2 to 6, characterized in that: The linkage gear also includes: a body rotatably disposed on the base; A first pushing portion is provided on the main body, and pushes the driving member to rotate when the main body rotates in the forward direction, thereby driving the rotating door member to rotate the door body to open through the driving member; The second pushing portion is provided on the main body and pushes the driving member to rotate when the main body rotates in the reverse direction.

8. The door opening and closing device according to claim 7, characterized in that: The driving member 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 driving member.

9. The door opening and closing device according to claim 8, characterized in that: The linkage gear further includes a third pushing portion connected to the door pushing mechanism, which drives the door pushing mechanism to push the door body when the main body rotates in the forward direction.

10. The door opening and closing device according to claim 9, characterized in that: The linkage member includes a first tooth portion, and the third pushing portion is provided with a second tooth portion that meshes with the first tooth portion for transmission.

11. The door opening and closing device according to claim 10, wherein: The first angle is less than or equal to a second angle, wherein the second angle is an angle that the linkage gear rotates from the time when the first tooth portion and the second tooth portion start to mesh to the time when the first tooth portion and the second tooth portion separate.

12. The door opening and closing device according to claim 7, wherein: A rotation limiting groove is provided on the main body, and the main body and the driving member are coaxially rotatably arranged on the base, and the driving member 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.

13. The door opening and closing device according to claim 7, wherein: The revolving door mechanism also includes: The return spring has two ends connected to the main body and the driving member respectively, so as to pull the driving member to lean against the second pushing portion after the door body is opened.

14. The door opening and closing device according to claim 2, wherein: The driving member and the linkage gear are coaxially rotatably arranged on the base.

15. An electrical device, characterized in that: The invention 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 14, wherein the door opening and closing device is arranged between the box body and the door body.

16. The electrical device according to claim 15, characterized in that: The electrical appliance is one of a refrigerator, a disinfection cabinet and a dishwasher.

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