Door opening device and electrical equipment

Abstract

The utility model discloses a door opening device and electrical equipment. The door opening device comprises a first pushing assembly and a second pushing assembly which are arranged on the main body and used for driving the door body to act; the transmission part is rotatably arranged on the main body; the driving assembly is arranged on the main body and is connected with the transmission part so as to drive the transmission part to rotate; when the transmission part rotates to enter a first rotation angle range, the transmission part is in transmission connection with the first pushing assembly and is separated from the second pushing assembly so as to drive the first pushing assembly to act; when the transmission part rotates from the first rotation angle range to the second rotation angle range, the transmission part is in transmission connection with the first pushing assembly and the second pushing assembly so as to drive the first pushing assembly and the second pushing assembly to act.

Description

Technical Field

[0001] The present application belongs to the field of electrical technology, and specifically relates to a door opening device and electrical equipment. Background Art

[0002] With the improvement of living standards, refrigerators, dishwashers, disinfection cabinets and other electrical appliances have been widely used in people's lives. In order to maintain the sealing performance of the above electrical appliances, an adsorption structure is usually set between the box and the door, or the internal and external negative pressure is maintained to stably fix the door on the box.

[0003] At present, the box body is generally provided with an opening, and a door body is provided at the opening, and the door body rotates relative to the box body to open or close the opening. People take items from the box body or put items into the box body by rotating the door body to open the opening. In some cases, it is difficult to open the door. For example, people cannot open the refrigerator door when they are holding items to be put into the refrigerator. For example, when people need to open the refrigerator door to take out ingredients while cooking, the refrigerator door will be dirty when they open the refrigerator door with oily hands. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a door opening device and an electrical appliance, aiming to solve the technical problem of difficulty in opening the door of the electrical appliance at least to a certain extent.

[0005] The technical solution of the utility model is:

[0006] A door opening device is special in that it is used to open a door body arranged on a main body, and the door opening device includes: a first pushing component and a second pushing component, which are arranged on the main body and are used to drive the door body to move; a transmission member, which is rotatably arranged on the main body; a driving component, which is arranged on the main body and connected to the transmission member to drive the transmission member to rotate; wherein, when the transmission member rotates into a first rotation angle range, the transmission member is transmission-connected to the first pushing component and separated from the second pushing component to drive the first pushing component to move; when the transmission member rotates from the first rotation angle range into the second rotation angle range, the transmission member is transmission-connected to both the first pushing component and the second pushing component to drive the first pushing component and the second pushing component to move.

[0007] Since the first pushing assembly and the second pushing assembly are arranged on the main body for driving the door body to move, the first pushing assembly and the second pushing assembly can be supported by the main body. Since the transmission member is rotatably arranged on the main body, the driving assembly is arranged on the main body and connected with the transmission member to drive the transmission member to rotate. Therefore, when the door body is to be opened, the driving assembly can drive the transmission member to rotate. When the transmission member rotates into the first rotation angle range, the transmission member is transmission-connected with the first pushing assembly and separated from the second pushing assembly to drive the first pushing assembly to move, so that the first pushing assembly can push one of the two door bodies to move to open one of the two door bodies. When the transmission member rotates from the first rotation angle range into the second rotation angle range, the transmission member is transmission-connected with the first pushing assembly and the second pushing assembly to drive the first pushing assembly and the second pushing assembly to move, so that the first pushing assembly and the second pushing assembly can push the two door bodies to move at the same time, and the two door bodies can be automatically opened. Under the condition that the user often holds objects with both hands or has dirty hands, the user does not need to pull open the door body by hand, which frees the user's hands, saves time and effort, and improves the user's use experience.

[0008] When the transmission member rotates from the first rotation angle range to the second rotation angle range, a driving component can transmit power to the first pushing component and the second pushing component respectively through the transmission member, so that the first pushing component and the second pushing component can open the door body, thereby realizing that one driving component can open two door bodies. Compared with the method of using two independent door opening devices to open the two door bodies respectively, the number of parts is reduced, the cost is reduced, and the manufacturing difficulty is reduced. Moreover, the transmission member can drive the first pushing component and the second pushing component to move at the same time, so that the two door bodies can move together, which can improve the door opening efficiency, reduce the user's waiting time, and improve the user experience.

[0009] In order to ensure the sealing performance, when the door body is in the closed state, the contact area between the door body and the main body of the soft door seal with a magnetic strip is large. However, when the door body is opened, due to the magnetic force and the negative pressure of the main body space, the sealing force between the door body and the main body is large, and a force of 40N to 70N is required to open it. Since the transmission member rotates into the first rotation angle range, the transmission member is connected to the first push component and separated from the second push component to drive the first push component to move. That is to say, in the initial stage of opening the door, the transmission member only transmits the power of the drive component to the first push component, and does not transmit the power of the drive component to the second push component. The power of the drive component only drives the first push component to move, so that the first push component can open one of the two door bodies, and the start time of the first push component and the second push component can be staggered. The power required by the drive component can still remain unchanged compared to the traditional single-door opening device. Without increasing the power and cost of the drive component, it is ensured that when the first push component pushes one of the two door bodies, a larger thrust can be obtained to break through the sealing force of the door body, so that it can be opened smoothly. The door body improves the user experience. After opening one of the two door bodies, the negative pressure of the main body will be reduced, that is, the sealing force of the door body will be reduced, and the resistance to opening the door body will decrease (≤5N). The transmission member rotates from the first rotation angle range to the second rotation angle range. The transmission member can be connected to the first pushing component and the second pushing component to transmit the power of the driving component to the first pushing component and the second pushing component at the same time, so as to drive the first pushing component and the second pushing component to move at the same time. At this time, the output power part of the driving component is used to break through the door gap force and the flip beam of one of the two door bodies. The power required by the driving component can still be maintained unchanged compared to the traditional door opening device for opening a single door, so that the first pushing component and the second pushing component can push the two door bodies to move at the same time, and the two door bodies can be opened automatically.

[0010] In some embodiments, the transmission member includes: a first gear, rotatably provided on the main body and meshing with the output end of the driving component; an incomplete gear, rotatably provided on the main body and connected to the first gear; wherein, when the incomplete gear rotates into a first rotation angle range, the incomplete gear meshes with the first pushing component and separates from the second pushing component to drive the first pushing component to move; when the incomplete gear rotates from the first rotation angle range into the second rotation angle range, the incomplete gear meshes with the first pushing component and the second pushing component to drive the first pushing component and the second pushing component to move, so as to transmit the power of the driving component to the first pushing component and / or the second pushing component.

[0011] In some embodiments, a portion of the circumferential surface of the incomplete gear has teeth to form a toothed surface, and the rest of the circumferential surface of the incomplete gear is smooth to form a toothless surface, and the toothed surface and the toothless surface are connected to each other end to end; wherein, the arc length of the toothed surface is greater than the arc length of the toothless surface to ensure the opening degree of the door body.

[0012] In some embodiments, the diameter of the non-toothed surface is smaller than or equal to the root circle of the toothed surface to ensure the stability of the movement of the first pushing component and / or the second pushing component.

[0013] In some embodiments, the first pushing component includes: a second gear rotatably disposed on the main body; a third gear meshing with the second gear; a first linkage gear meshing with the third gear; a first rack meshing with the first rack; a first pushing member angularly connected to the first rack and slidably disposed on the main body; the second pushing component includes: a fourth gear; a second linkage gear connected to the fourth gear; a second rack meshing with the second linkage gear; a second pushing member angularly connected to the second rack and slidably disposed on the main body; wherein, when the transmission member rotates into the first rotation angle range, the transmission member meshes with the second gear and separates from the fourth gear; when the transmission member rotates from the first rotation angle range into the second rotation angle range, the transmission member meshes with the second gear and the fourth gear to ensure that the first pushing component and the second pushing component can push the door body.

[0014] In some embodiments, the door opening device also includes: a first micro switch, which is arranged on the main body and located at the starting point of the stroke of the first pushing component and / or the second pushing component; a second micro switch, which is arranged on the main body and located at the end point of the stroke of the first pushing component and / or the second pushing component; wherein, under the condition that the first pushing component and / or the second pushing component are in contact with the first micro switch, the driving component stops moving, and under the condition that the first pushing component and / or the second pushing component are in contact with the second micro switch, the driving component drives the transmission member to reverse so that the first pushing component and the second pushing component retract, so as to control the extension or retraction of the first pushing component and the second pushing component.

[0015] In some embodiments, the first micro switch and the second micro switch are located on the side where the first pushing component and the second pushing component have a longer extended length, so as to ensure that the extended length of the first pushing component and the second pushing component meets the requirements.

[0016] In some embodiments, the first micro switch and the second micro switch are located on the side where the second pushing component is located. When the transmission member rotates from the second rotation angle range to the third rotation angle range, the transmission member is connected to the second pushing component and is separated from the first pushing component to drive the second pushing component to move. The door body can be opened to the desired opening through the second pushing component.

[0017] Based on the same utility model concept, the utility model also provides an electrical appliance, including a main body, a door body and the door opening device.

[0018] In some embodiments, the electrical device includes a refrigerator, and the door body of the refrigerator includes a first door body and a second door body; wherein the first pushing component acts on the first door body, and the second pushing component acts on the second door body to open the door body of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the door opening device of some embodiments;

[0021] Figure 2 for Figure 1 A top view of the center door device;

[0022] Figure 3 for Figure 2 AA section view of the center door device;

[0023] Figure 4 for Figure 1 A schematic diagram of the cooperation between the transmission member of the center-opening door device and the first pushing assembly and the second pushing assembly;

[0024] Figure 5 for Figure 4 Bottom view of

[0025] Figure 6 for Figure 4 Schematic diagram of the structure of the transmission parts;

[0026] Figure 7 for Figure 1 A schematic structural diagram of the first linkage gear of the center-opening door device;

[0027] Figure 8 for Figure 1A schematic diagram of a transmission member of a center-opening door device being within a first rotation angle range;

[0028] Fig. 9 for Figure 8 Bottom view of

[0029] Fig.10 for Figure 1 A schematic diagram of a transmission member of a center-opening door device entering a second rotation angle range from a first rotation angle range;

[0030] Fig.11 for Fig.10 Bottom view of

[0031] Fig.12 for Figure 1 A schematic diagram of a transmission member of a center-opening door device entering a third rotation angle range from a second rotation angle range;

[0032] Fig.13 for Fig.12 Bottom view of

[0033] Fig.14 Schematic diagram of the structure of refrigerators in some embodiments.

[0034] In the attached figure:

[0035] A first pushing assembly 10, a second gear 101, a third gear 102, a first linkage gear 103, a first rack 104, a first pushing member 105, a first slide rail 106, and a first shock-absorbing pad 107;

[0036] The second pushing assembly 20, the fourth gear 201, the second linkage gear 202, the second rack 203, the second pushing member 204, the second slide rail 205, the second shock-absorbing pad 206, and the protrusion 207;

[0037] Transmission member 30, first gear 301, incomplete gear 302, toothed surface 3021, non-toothed surface 3022;

[0038] Driving assembly 40, driver 401, reduction gear mechanism 402;

[0039] Main body 50, first slider 501, second slider 502;

[0040] Door body 60, first door body 601, second door body 602;

[0041] A first micro switch 70;

[0042] The second micro switch 80 . DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0047] When the door body is closed on the main body, in order to improve the sealing effect between the two, the door body is usually pressed against the main body with a large pressure, or the door body is adsorbed on the main body through an adsorption structure. There is a large adsorption force between the door body and the main body. When opening the door body, a large force is required to separate the door body and the main body from the adsorption, which makes the door body difficult to open. In order to facilitate door opening, a door opening device is usually provided on the main body to break through the door opening resistance and realize automatic door opening; however, when two doors are provided on the main body, two door opening devices are required to open the two doors respectively, resulting in high costs. The door opening device provided in the embodiment of the present application can improve the above problems. The door opening device provided in the embodiment of the present application can drive the first pushing component and the second pushing component to push the door through the same driving component, which can reduce the number of parts of the entire door opening device and reduce costs.

[0048] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0049] The door opening device and electrical equipment provided in this embodiment are intended to solve the technical problem of difficulty in opening the door of electrical equipment at least to a certain extent.

[0050] Figure 1 It is a schematic diagram of the structure of the door opening device of some embodiments; Figure 8 for Figure 1 A schematic diagram of a transmission member of a center-opening door device being within a first rotation angle range; Fig. 9 for Figure 8 Bottom view of Fig.10 for Figure 1 A schematic diagram of a transmission member of a center-opening door device entering a second rotation angle range from a first rotation angle range; Fig.11 for Fig.10 Bottom view of Fig.14 Schematic diagram of the structure of a refrigerator in some embodiments. Figure 1 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.14 , the door opening device of the embodiment of the present application is used to open the door body 60 arranged on the main body 50. The door opening device includes: a first pushing component 10, a second pushing component 20, a transmission member 30 and a driving component 40. The first pushing component 10 and the second pushing component 20 are arranged on the main body 50, and are used to drive the door body 60 to move. The transmission member 30 is rotatably arranged on the main body 50. The driving component 40 is arranged on the main body 50 and is connected to the transmission member 30 to drive the transmission member 30 to rotate. Among them, when the transmission member 30 rotates into the first rotation angle range, the transmission member 30 is transmission-connected with the first pushing component 10 and separated from the second pushing component 20 to drive the first pushing component 10 to move. When the transmission member 30 rotates from the first rotation angle range to the second rotation angle range, the transmission member 30 is transmission-connected with the first pushing component 10 and the second pushing component 20 to drive the first pushing component 10 and the second pushing component 20 to move.

[0051] The transmission member 30 is in transmission connection with the first pushing assembly 10 , which means that the transmission member 30 can transmit the power of the driving assembly 40 to the first pushing assembly 10 .

[0052] The transmission member 30 is in transmission connection with the second pushing assembly 20 , which means that the transmission member 30 can transmit the power of the driving assembly 40 to the second pushing assembly 20 .

[0053] Since the first pushing assembly 10 and the second pushing assembly 20 are arranged on the main body 50 and are used to drive the door body 60 to move, the first pushing assembly 10 and the second pushing assembly 20 can be supported by the main body 50. Since the transmission member 30 is rotatably arranged on the main body 50, the driving assembly 40 is arranged on the main body 50 and is connected with the transmission member 30 to drive the transmission member 30 to rotate. Therefore, when the door body 60 is to be opened, the driving assembly 40 can drive the transmission member 30 to rotate. When the transmission member 30 rotates into the first rotation angle range, the transmission member 30 is transmission-connected to the first pushing assembly 10 and separated from the second pushing assembly 20 to drive the first pushing assembly 10 to move, so that the first pushing assembly 10 is opened. The moving component 10 can push one of the two door bodies 60 to move so as to open one of the two door bodies 60. When the transmission member 30 rotates from the first rotation angle range to the second rotation angle range, the transmission member 30 is connected to the first pushing component 10 and the second pushing component 20 to drive the first pushing component 10 and the second pushing component 20 to move, so that the first pushing component 10 and the second pushing component 20 can push the two door bodies 60 to move at the same time, and the two door bodies 60 can be automatically opened. Under the condition that the user often holds objects with both hands or has dirty hands, the user does not need to pull open the door body 60 by hand, which frees the user's hands, saves time and effort, and improves the user's experience.

[0054] When the transmission member 30 rotates from the first rotation angle range to the second rotation angle range, a driving component 40 can transmit power to the first pushing component 10 and the second pushing component 20 respectively through the transmission member 30, so that the first pushing component 10 and the second pushing component 20 can open the door body 60, thereby realizing that one driving component 40 can open the two door bodies 60. Compared with the method of using two sets of independent door opening devices to open the two door bodies 60 respectively, the number of parts is reduced, the cost is reduced, and the manufacturing difficulty is reduced. Moreover, the transmission member 30 can simultaneously drive the first pushing component 10 and the second pushing component 20 to move, so that the two door bodies 60 can move together, which can improve the door opening efficiency, reduce the user's waiting time, and improve the user's experience.

[0055] In order to ensure the sealing performance, when the door body 60 is in a closed state, the soft door seal with a magnetic strip between the door body 60 and the main body 50 has a large contact area with the main body 50. However, when the door body 60 is opened, due to the magnetic force and the negative pressure in the space of the main body 50, the sealing force between the door body 60 and the main body 50 is relatively large, and a force of 40N to 70N is required to open it. Since the transmission member 30 rotates and enters the first rotation angle range, the transmission member 30 is connected to the first pushing component 10 and is separated from the second pushing component 20 to drive the first pushing component 10 to move. That is to say, in the initial stage of opening the door, the transmission member 30 only transmits the power of the driving component 40 to the first pushing component 10, and does not transmit the power of the driving component 40 to the second pushing component 20. The power of the driving component 40 only drives the first pushing component 10 to move, so that the first pushing component 10 can open one of the two door bodies 60, and the start time of the first pushing component 10 and the second pushing component 20 can be staggered. The power required by the driving component 40 can still be maintained unchanged compared with the traditional door opening device for opening a single door. Without increasing the power and cost of the driving component 40, it is ensured that when the first pushing component 10 pushes one of the two door bodies 60, a larger thrust can be obtained to break through the sealing force of the door body 60, so that it can be opened smoothly. The door body 60 improves the user's experience. After opening one of the two door bodies 60, the negative pressure of the main body 50 will be reduced, that is, the sealing force of the door body 60 will be reduced, and the resistance to opening the door body 60 will decrease (≤5N). The transmission member 30 rotates from the first rotation angle range to the second rotation angle range. The transmission member 30 can be connected to the first pushing component 10 and the second pushing component 20 to transmit the power of the driving component 40 to the first pushing component 10 and the second pushing component 20 at the same time, so as to drive the first pushing component 10 and the second pushing component 20 to move at the same time. At this time, the output power part of the driving component 40 is used to break through the door gap force and the flip beam of one of the two door bodies 60. The power required by the driving component 40 can still be maintained unchanged compared with the traditional door opening device for opening a single door, so that the first pushing component 10 and the second pushing component 20 can simultaneously push the two door bodies 60 to move, and the two door bodies 60 can be automatically opened.

[0056] In some embodiments, after the door body 60 is opened, in order to avoid interfering with the closing of the door body 60, the first push assembly 10 and the second push assembly 20 need to be restored to their original positions, and the driving assembly 40 drives the transmission member 30 to rotate. When the transmission member 30 rotates within the second rotation angle range, the transmission member 30 is transmission-connected with the first push assembly 10 and the second push assembly 20 to drive the first push assembly 10 and the second push assembly 20 to move, so that the second push assembly 20 is restored to its original position, and the second push assembly 20 retracts in a direction away from the door body 60. When the transmission member 30 rotates within the first rotation angle range, the transmission member 30 is transmission-connected with the first push assembly and separated from the second push assembly 20 to drive the first push assembly 10 to move, so that the first push assembly 10 is restored to its original position. After the first push assembly 10 and the second push assembly 20 are both restored to their original positions, the user can push the door body 60 so that the door body 60 can smoothly close the opening of the main body 10.

[0057] In some embodiments, when the door body 60 is opened, the rotation direction of the rotating member 30 is a first rotation direction, and after the door body 60 is opened, the rotation direction of the rotating member 30 is a second rotation direction, and the first rotation direction is opposite to the second rotation direction. The first rotation direction may be clockwise, and the second rotation direction may be counterclockwise.

[0058] Figure 4 for Figure 1 A schematic diagram of the cooperation between the transmission member of the center-opening door device and the first pushing assembly and the second pushing assembly; Figure 5 for Figure 4 Bottom view of Figure 6 for Figure 4 Schematic diagram of the structure of the transmission parts. Figure 4 , Figure 5 and Figure 6 In some embodiments, in order to transmit the power of the driving component 40 to the first pushing component 10 and / or the second pushing component 20, the transmission member 30 includes: a first gear 301 and an incomplete gear 302. The first gear 301 is rotatably disposed on the main body 50 and meshes with the output end of the driving component 40. The incomplete gear 302 is rotatably disposed on the main body 50 and connected to the first gear 301. When the incomplete gear 302 rotates into the first rotation angle range, the incomplete gear 302 meshes with the first pushing component 10 and separates from the second pushing component 20 to drive the first pushing component 10 to move. When the incomplete gear 302 rotates from the first rotation angle range to the second rotation angle range, the incomplete gear 302 meshes with both the first pushing component 10 and the second pushing component 20 to drive the first pushing component 10 and the second pushing component 20 to move.

[0059] In some embodiments, when the door body 60 is to be opened, the driving assembly 40 is started, and the driving assembly 40 transmits power to the incomplete gear 302 through the first gear 301, so that the incomplete gear 302 rotates. When the incomplete gear 302 rotates into the first rotation angle range, the incomplete gear 302 engages with the first push assembly 10 and separates from the second push assembly 20 to drive the first push assembly 10 to move, so that the first push assembly 10 can push one of the two door bodies 60 to move, so as to open one of the two door bodies 60. When the incomplete gear 302 rotates from the first rotation angle range into the second rotation angle range, the incomplete gear 302 engages with the first push assembly 10 and the second push assembly 20 to drive the first push assembly 10 and the second push assembly 20 to move, so that the first push assembly 10 and the second push assembly 20 can simultaneously push the two door bodies 60 to move, and the two door bodies 60 can be automatically opened. Under the condition that the user often holds objects with both hands or has dirty hands, the user does not need to pull the door body 60 open by hand, which frees the user's hands, saves time and effort, and improves the user's use experience.

[0060] In some embodiments, when the incomplete gear 302 rotates from the first rotation angle range to the second rotation angle range, a driving component 40 can transmit power to the first pushing component 10 and the second pushing component 20 respectively through the incomplete gear 302, so that the first pushing component 10 and the second pushing component 20 can open the door body 60, thereby realizing that one driving component 40 can open two door bodies 60. Compared with the method of using two independent door opening devices to open the two door bodies 60 respectively, the number of parts is reduced, the cost is reduced, and the manufacturing difficulty is reduced. Moreover, the incomplete gear 302 can simultaneously drive the first pushing component 10 and the second pushing component 20 to move, so that the two door bodies 60 can move together, which can improve the door opening efficiency, reduce the user's waiting time, and improve the user's experience.

[0061] In some embodiments, when the incomplete gear 302 rotates and enters the first rotation angle range, the incomplete gear 302 is connected to the first pushing component 10 and is separated from the second pushing component 20 to drive the first pushing component 10 to move. That is to say, in the initial stage of opening the door, the incomplete gear 302 only transmits the power of the driving component 40 to the first pushing component 10, and does not transmit the power of the driving component 40 to the second pushing component 20. The power of the driving component 40 only drives the first pushing component 10 to move, so that the first pushing component 10 can open one of the two door bodies 60, and the start-up time of the first pushing component 10 and the second pushing component 20 can be staggered, without increasing the power and cost of the driving component 40. Ensure that the first pushing component 10 is in a state of pushing the two door bodies 60. 0, a larger thrust can be obtained to break through the sealing force of the door body 60, so that the door body 60 can be smoothly opened, which improves the user experience. After opening one of the two door bodies 60, the negative pressure of the main body 50 will be reduced, that is, the sealing force of the door body 60 will be reduced, and the incomplete gear 302 will rotate from the first rotation angle range to the second rotation angle range. The incomplete gear 302 can be connected to the first pushing component 10 and the second pushing component 20 in a transmission manner to transmit the power of the driving component to the first pushing component 10 and the second pushing component 20 at the same time, so as to drive the first pushing component 10 and the second pushing component 20 to move at the same time, so that the first pushing component 10 and the second pushing component 20 can simultaneously push the two door bodies 60 to move, and the two door bodies 60 can be automatically opened.

[0062] Combination Figure 6 In some embodiments, in order to ensure the stability of the movement of the transmission member 30 , the first gear 301 and the incomplete gear 302 are coaxially arranged, and the first gear 301 and the incomplete gear 302 are sequentially arranged up and down along the axis of the transmission member 30 .

[0063] In some embodiments, in order to ensure the stability of the connection between the first gear 301 and the incomplete gear 302, the first gear 301 and the incomplete gear 302 can be integrally formed, so that the first gear 301 and the incomplete gear 302 are firmly connected, while reducing the processing and manufacturing costs.

[0064] Combination Figure 6In some embodiments, in order to transmit the power of the driving component 40 to the first pushing component 10 and / or the second pushing component 20, the circumferential surface of the incomplete gear 302 is partially provided with teeth to form a toothed surface 3021, and the rest of the circumferential surface of the incomplete gear 302 is a smooth surface to form a toothless surface 3022. The toothed surface 3021 and the toothless surface 3022 are connected to each other end to end, that is, when the incomplete gear 302 rotates into the first rotation angle range, the toothed surface 3021 meshes with the first pushing component 10 to drive the first pushing component 10 to move, and the toothless surface 3022 is separated from the power of the second pushing component 20, that is, the toothless surface 3022 will not transmit the power of the driving component 40 to the second pushing component 20, so that the second pushing component 20 does not move. When the incomplete gear 302 rotates from the first rotation angle range into the second rotation angle range, the toothed surface 3021 meshes with the first pushing component 10 and the second pushing component 20 to drive the first pushing component 10 and the second pushing component 20 to move. The number of the toothed surface 3021 and the number of the non-toothed surface 3022 are both one.

[0065] Combination Figure 6 In some embodiments, in order to ensure the opening degree of the door body 60, the arc length of the toothed surface 3021 is greater than the arc length of the non-toothed surface 3022, and the meshing stroke of the toothed surface 3021 and the first pushing component 10 and / or the second pushing component 20 can be increased to ensure the action stroke of the first pushing component 10 and the second pushing component 20, so that the first pushing component 10 and the second pushing component 20 can fully act on the door body 60 to ensure that the opening degree of the door body 60 meets the requirements.

[0066] Combination Figure 6 In some embodiments, in order to ensure the movement stability of the first pushing component 10 and / or the second pushing component 20, the diameter of the toothless surface 3022 is less than or equal to the root circle of the toothed surface 3021. When the incomplete gear 302 rotates within the first rotation angle range, the force between the toothless surface 3022 and the second pushing component 20 can be avoided, thereby avoiding interference with the rotation of the incomplete gear 302 and ensuring the stability of the rotation of the incomplete gear 302.

[0067] Combination Figure 1In some embodiments, in order to ensure that the first pushing assembly 10 and the second pushing assembly 20 can push the door body 60, the first pushing assembly 10 includes: a second gear 101, a third gear 102, a first linkage gear 103, a first linkage gear 103, a first rack 104 and a first pushing member 105. The second gear 101 is rotatably arranged on the main body 50. The third gear 102 is meshed with the second gear 101. The first linkage gear 103 is meshed with the third gear 102. The first rack 104 is meshed with the first rack 104. The first pushing member 105 is connected to the first rack 104 at an angle and is slidably arranged on the main body 50. The second pushing assembly 20 includes: a fourth gear 201, a second linkage gear 202, a second rack 203 and a second pushing member 204. The second linkage gear 202 is connected to the fourth gear 201. The second rack 203 is meshed with the second linkage gear 202. The second pusher 204 is angularly connected to the second rack 203 and is slidably disposed on the main body 50. When the transmission member 30 rotates into the first rotation angle range, the transmission member 30 meshes with the second gear 101 and is separated from the fourth gear 201; when the transmission member 30 rotates from the first rotation angle range into the second rotation angle range, the transmission member 30 meshes with both the second gear 101 and the fourth gear 201.

[0068] In some embodiments, when the door body 60 is to be opened, the drive component 40 is started, and the drive component 40 drives the transmission member 30 to move. When the transmission member 30 rotates and enters the first rotation angle range, the transmission member 30 engages with the second gear 101 and separates from the fourth gear 201. The transmission member 30 transmits power to the second gear 101, and the second gear 101 drives the third gear 102 to rotate. The third gear 102 drives the first linkage gear 103 to move. The first linkage gear 103 drives the first pusher 105 through the first rack 104. The first pusher 105 moves in a straight line, so that the first pusher 105 pushes one of the two door bodies 60 to open one of the two door bodies 60. When the transmission member 30 rotates from the first rotation angle range to the second rotation angle range, the transmission member 30 is meshed with the second gear 101 and the fourth gear 201, the fourth gear 201 drives the second linkage gear 202 to move, the second linkage gear 202 drives the second pusher 204 to move through the second rack 203, and the second pusher 204 moves in a straight line to make the first pusher 105 push the other of the two door bodies 60. At this time, the first linkage gear 103 continues to drive the first pusher 105 through the first rack 104 to make both door bodies 60 open, ensuring the opening degree of the two door bodies 60, and can automatically open the two door bodies 60. Under the condition that the user often holds objects with both hands or has dirty hands, the user does not need to open the door body 60 by hand, freeing the user's hands, saving time and effort, and improving the user's experience.

[0069] Figure 7 for Figure 1 Schematic diagram of the structure of the first linkage gear of the center opening door device. Figure 7 In some embodiments, the curve formed by the connecting line of the tooth tops of the first linkage gear 103 and the connecting line of the tooth tops of the second linkage gear 202 can be a spiral line, and the spiral line can be an Archimedean spiral, a hyperbolic spiral, an involute curve, etc., but if the above relationship is satisfied, it is not limited to the above lines.

[0070] Combination Figure 7 In some embodiments, the first linkage gear 103 and the second linkage gear 202 can be half of a complete gear, that is, a toothed plate, which can reduce weight and manufacturing costs.

[0071] Figure 2 for Figure 1 A top view of the center door device; Figure 3 for Figure 2 AA section view of the center door device. Figure 2 and Figure 3 In some embodiments, in order to ensure the stability of the movement of the first pushing member 105, one of the first pushing member 105 and the main body 50 is provided with a first slide rail 106, and the other is provided with a first slider 501. The first slider 501 is slidably arranged in the first slide rail 106. When the first pushing member 105 moves linearly relative to the main body 50, the first slider 501 can slide in the first slide rail 106 to limit the movement of the first pushing member 105 and avoid the movement of the first pushing member 105 from being offset, so that the first pushing member 105 can push the door body 60.

[0072] In some embodiments, the first pusher 105 may be provided with a first slide rail 106, and the main body 50 may be provided with a first slider 501. Of course, in some other embodiments, the main body 50 may be provided with a first slide rail 106, and the first pusher 105 may be provided with a first slider 501.

[0073] Combination Figure 2 and Figure 3 In some embodiments, in order to ensure the stability of the movement of the second pushing member 204, one of the second pushing member 204 and the main body 50 is provided with a second slide rail 205, and the other is provided with a second slider 502. The second slider 502 is slidably arranged in the second slide rail 205. When the second pushing member 204 moves linearly relative to the main body 50, the second slider 502 can slide in the second slide rail 205 to limit the movement of the second pushing member 204 and avoid the movement of the second pushing member 204 from being offset, so that the second pushing member 204 can push the door body 60.

[0074] In some embodiments, the second pusher 204 may be provided with a second slide rail 205, and the main body 50 may be provided with a second slider 502. Of course, in some other embodiments, the main body 50 may be provided with a second slide rail 205, and the second pusher 204 may be provided with a second slider 502.

[0075] Combination Figure 1 In some embodiments, the angle between the first rack 104 and the first pusher 105 can be an acute angle, so that when the first linkage gear 103 drives the first rack 104 to move, the first rack 104 can drive the first pusher 105 to move linearly.

[0076] In some embodiments, in order to ensure the stability of the connection between the first rack 104 and the first pusher 105, the first rack 104 and the first pusher 105 can be integrally formed, so that the first rack 104 and the first pusher 105 are firmly connected, while also reducing the manufacturing cost.

[0077] Combination Figure 1 In some embodiments, the angle between the second rack 203 and the second pusher 204 can be an acute angle, so that when the first linkage gear 103 drives the second rack 203 to move, the second rack 203 can drive the second pusher 204 to move linearly.

[0078] In some embodiments, in order to ensure the stability of the connection between the second rack 203 and the second pusher 204, the second rack 203 and the second pusher 204 can be integrally formed, so that the second rack 203 and the second pusher 204 are firmly connected, while also reducing the manufacturing cost.

[0079] Combination Figure 1 In some embodiments, a first shock-absorbing pad 107 is provided at the end of the first pushing member 105 facing the door body 60. When the first pushing component 10 conflicts with the door body 60, the first shock-absorbing pad 107 can reduce shock, thereby achieving soft contact between the first pushing component 10 and the door body 60, reducing damage to the door body 60 and the first pushing component 10 caused by vibration, and ensuring the service life of the door body 60 and the first pushing component 10.

[0080] In some embodiments, a second shock-absorbing pad 206 is provided at the end of the second pushing member 204 facing the door body 60. When the second pushing component 20 conflicts with the door body 60, the second shock-absorbing pad 206 can reduce shock, thereby achieving soft contact between the second pushing component 20 and the door body 60, reducing damage to the door body 60 and the second pushing component 20 caused by vibration, and ensuring the service life of the door body 60 and the second pushing component 20.

[0081] In some embodiments, the materials of the first shock absorbing pad 107 and the second shock absorbing pad 206 can be rubber, plastic, sponge, etc., but are not limited to the above materials if they can provide shock absorption.

[0082] Combination Figure 1 and Figure 2 In some embodiments, in order to control the extension or retraction of the first pushing assembly 10 and the second pushing assembly 20, the door opening device further includes: a first micro switch 70 and a second micro switch 80. The first micro switch 70 is provided on the main body 50 and is located at the starting point of the travel of the first pushing assembly 10 and / or the second pushing assembly 20. The second micro switch 80 is provided on the main body 50 and is located at the end point of the travel of the first pushing assembly 10 and / or the second pushing assembly 20. Wherein, under the condition that the first pushing assembly 10 and / or the second pushing assembly 20 contacts the first micro switch 70, the driving assembly 40 stops the action, and under the condition that the first pushing assembly 10 and / or the second pushing assembly 20 contacts the second micro switch 80, the driving assembly 40 drives the transmission member 30 to reverse, so that the first pushing assembly 10 and the second pushing assembly 20 retract.

[0083] In some embodiments, when the first push assembly 10 and / or the second push assembly 20 are in contact with the second micro switch 80, it indicates that the first push assembly 10 and the second push assembly 20 have reached the limit position of extension. In order to avoid excessive movement of the first push assembly 10 and the second push assembly 20, the drive assembly 40 drives the transmission member 30 to reverse, so that the first push assembly 10 and the second push assembly 20 retract. When closing the door body 60, the first push assembly 10 and the second push assembly 20 are prevented from abutting against the door body 60, so as to ensure the normal closing action. When the first push assembly 10 and / or the second push assembly 20 are in contact with the first micro switch 70, it indicates that the first push assembly 10 and the second push assembly 20 have reached the limit position of retraction. In order to avoid excessive movement of the first push assembly 10 and the second push assembly 20, the drive assembly 40 stops the action, so that the first push assembly 10 and the second push assembly 20 stop the action.

[0084] In some embodiments, in order to ensure that the extended length of the first pushing component 10 and the second pushing component 20 meets the requirements, the first microswitch 70 and the second microswitch 80 are located on the side where the first pushing component 10 and the second pushing component 20 with the longer extended length are located. When the first pushing component 10 and the second pushing component 20 with the longer extended length contacts the first microswitch 70 and the second microswitch 80, it indicates that the first pushing component 10 or the second pushing component 20 has been moved into place, ensuring that the first pushing component 10 and the second pushing component 20 with the longer extended length can push the door body 60 into place, thereby ensuring the opening degree of the door body 60.

[0085] In some embodiments, since the first micro switch 70 and the second micro switch 80 are located on the side where the first pushing component 10 and the second pushing component 20 extend longer, only one first micro switch 70 and one second micro switch 80 are needed to achieve the retraction or stop of the first pushing component 10 and the second pushing component 20, thereby reducing costs.

[0086] In some embodiments, the first micro switch 70 and the second micro switch 80 are located on the side where the first pushing component 10 and the second pushing component 20 with a longer extension length are located: the first micro switch 70 and the second micro switch 80 are located on the action path of the first pushing component 10 and the second pushing component 20 with a longer extension length. Only when the first micro switch 70 and the second micro switch 80 are located on the action path of the first pushing component 10 and the second pushing component 20 with a longer extension length, the first micro switch 70 and the second micro switch 80 will touch the first pushing component 10 and the second pushing component 20 with a longer extension length.

[0087] Fig.12 for Figure 1 A schematic diagram of a transmission member of a center-opening door device entering a third rotation angle range from a second rotation angle range; Fig.13 for Fig.12 Bottom view of the Figure 1 , Fig.12 and Fig.13 In some embodiments, the first microswitch 70 and the second microswitch 80 are located on the side where the second pushing component 20 is located. When the transmission member 30 rotates from the second rotation angle range to the third rotation angle range, the transmission member 30 is connected to the second pushing component 20 and is separated from the first pushing component 10 to drive the second pushing component 20 to move. At this time, the extended length of the second pushing component 20 is greater than the extended length of the first pushing component 10, that is, the second pushing component 20 is the longer one of the first pushing component 10 and the second pushing component 20, and the door body 60 can be opened to the desired opening through the second pushing component 20.

[0088] In some embodiments, the first micro switch 70 is located in the rotation path of the second linkage gear 202 of the second pushing component 20, that is, when the second linkage gear 202 contacts the first micro switch 70, the driving component 40 stops moving to stop the first pushing component 10 and the second pushing component 20.

[0089] In some embodiments, the second micro switch 80 is located in the moving path of the second pushing member 204 of the second pushing assembly 20, that is, when the second micro switch 80 contacts the second pushing member 204, the driving assembly 40 drives the transmission member 30 to reverse so that the first pushing assembly 10 and the second pushing assembly 20 retract.

[0090] Combination Figure 1 In some embodiments, a protrusion 207 is provided on the second pushing member 204 of the second pushing assembly 20 , and the protrusion 207 can contact the second micro switch 80 to trigger the second micro switch 80 .

[0091] Combination Figure 1 In some embodiments, in order to drive the transmission member 30 to rotate, the driving assembly 40 includes: a driver 401 and a reduction gear mechanism 402. The driver 401 is disposed on the main body 50. The reduction gear mechanism 402 is disposed on the main body 50 and meshes with the output end of the driver 401 and the transmission member 30. The driver 401 may be a motor.

[0092] In some embodiments, when the transmission member 30 is to be driven to rotate, the driver 401 is started, and the driver 401 transmits power to the reduction gear mechanism 402. The reduction gear mechanism 402 can reduce the output speed of the driver 401, increase the torque, and improve the load capacity so that the transmission member 30 can rotate smoothly.

[0093] Based on the same utility model concept, the present application also proposes an electrical device, which adopts the door opening device. The specific structure of the door opening device refers to the above-mentioned embodiment. Since all the technical solutions of all the above-mentioned embodiments are adopted, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0094] Combination Fig.14 In some embodiments, the electrical device includes a main body 50 and a door 60 . The main body 50 is provided with an opening, and the door 60 is provided at the opening. The door 60 rotates relative to the main body 50 to open or close the opening. The door opening device is provided at the top of the main body 50 .

[0095] In some embodiments, the electrical device may be a household appliance such as a refrigerator, a dishwasher, or a disinfection cabinet.

[0096] Combination Figure 1 and Fig.14 In some embodiments, in order to open the door 60 of a refrigerator, the electrical device includes a refrigerator, and the door 60 of the refrigerator includes a first door 601 and a second door 602. The first pushing assembly 10 acts on the first door 601, and the second pushing assembly 20 acts on the second door 602.

[0097] In some embodiments, when the door body 60 is to be opened, the driving assembly 40 can drive the transmission member 30 to rotate. When the transmission member 30 rotates into the first rotation angle range, the transmission member 30 is connected to the first pushing assembly 10 and separated from the second pushing assembly 20 to drive the first pushing assembly 10 to move, so that the first pushing assembly 10 can push the first door body 601 to move and open the first door body 601. When the transmission member 30 rotates from the first rotation angle range into the second rotation angle range, the transmission member 30 is connected to the first pushing assembly 10 and the second pushing assembly 20 to drive the first pushing assembly 10 and the second pushing assembly 20 to move, so that the first pushing assembly 10 continues to push the first door body 601, and the second pushing assembly 20 pushes the second door body 602 to move, so that the first door body 601 and the second door body 602 can be automatically opened. Under the condition that the user often holds objects with both hands or has dirty hands, the user does not need to use his hands to pull open the first door body 601 and the second door body 602, which frees the user's hands, saves time and effort, and improves the user's experience.

[0098] In some embodiments, when the transmission member 30 rotates from the first rotation angle range to the second rotation angle range, a driving component 40 can transmit power to the first pushing component 10 and the second pushing component 20 through the transmission member 30, so that the first pushing component 10 and the second pushing component 20 can open the first door body 601 and the second door body 602, thereby realizing that one driving component 40 can open the two door bodies 60. Compared with the method of using two independent door opening devices to open the two door bodies 60 respectively, the number of parts is reduced, the cost is reduced, and the manufacturing difficulty is reduced. Moreover, the transmission member 30 can simultaneously drive the first pushing component 10 and the second pushing component 20 to move, so that the first door body 601 and the second door body 602 can move together, which can improve the door opening efficiency, reduce the user's waiting time, and improve the user's experience.

[0099] In some embodiments, in order to ensure the sealing performance, when the first door body 601 and the second door body 602 are in a closed state, the contact area between the soft door seal with magnetic strips and the main body 50 is large. However, when the door body 60 is opened, due to the magnetic force and the negative pressure in the space of the main body 50, the sealing force between the first door body 601 and the second door body 602 and the main body 50 is relatively large, and a force of 40N to 70N is required to open it. Since the transmission member 30 rotates and enters the first rotation angle range, the transmission member 30 is connected to the first pushing component 10 and is separated from the second pushing component 20 to drive the first pushing component 10 to move. That is to say, in the initial stage of opening the door, the transmission member 30 only transmits the power of the driving component 40 to the first pushing component 10, and does not transmit the power of the driving component 40 to the second pushing component 20. The power of the driving component 40 only drives the first pushing component 10 to move, so that the first pushing component 10 can open the first door body 601, and the start time of the first pushing component 10 and the second pushing component 20 can be staggered. The power required by the driving component 40 can still be maintained unchanged compared with the traditional door opening device for opening a single door. Without increasing the power and cost of the driving component 40, it is ensured that when the first pushing component 10 pushes the first door body 601, a larger thrust can be obtained to break through the sealing force of the first door body 60, so that the first door body 601 can be smoothly opened, thereby improving The user's experience is that after opening the first door body 601, the negative pressure of the main body 50 will be reduced, that is, the sealing force of the second door body 602 will be reduced, and the resistance to opening the second door body 602 will decrease (≤5N), and the transmission member 30 will rotate from the first rotation angle range to the second rotation angle range. The transmission member 30 can be connected to the first pushing component 10 and the second pushing component 20 for transmission, so as to transmit the power of the driving component 40 to the first pushing component 10 and the second pushing component 20 at the same time, so as to drive the first pushing component 10 and the second pushing component 20 to move at the same time. At this time, the output power of the driving component 40 is partially used to break through the door gap force and the flip beam of the second door body 602. The power required by the driving component 40 can still be maintained unchanged compared with the traditional door opening device for opening a single door, so that the first pushing component 10 and the second pushing component 20 can simultaneously push the first door body 601 and the second door body 602 to move, and the first door body 601 and the second door body 602 can be automatically opened.

[0100] 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 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 referred device or element 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.

[0101] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0102] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0103] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0104] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0105] Obviously, those skilled in the art can make various changes and modifications 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 is also intended to include these modifications and variations.

Claims

1. A door opening device, used to open a door body arranged on a main body, characterized in that: The door opening device comprises: A first pushing assembly and a second pushing assembly are provided on the main body and are used to drive the door body to move; A transmission member rotatably disposed on the main body; A driving assembly, disposed on the main body and connected to the transmission member to drive the transmission member to rotate; Among them, when the transmission member rotates into the first rotation angle range, the transmission member is transmission connected with the first pushing component and separated from the second pushing component to drive the first pushing component to move; when the transmission member rotates from the first rotation angle range to the second rotation angle range, the transmission member is transmission connected with both the first pushing component and the second pushing component to drive the first pushing component and the second pushing component to move.

2. The door opening device according to claim 1, characterized in that: The transmission member comprises: A first gear, rotatably disposed on the main body and meshing with an output end of the driving assembly; An incomplete gear, rotatably disposed on the main body and connected to the first gear; Among them, when the incomplete gear rotates into the first rotation angle range, the incomplete gear engages with the first pushing component and separates from the second pushing component to drive the first pushing component to move; when the incomplete gear rotates from the first rotation angle range to the second rotation angle range, the incomplete gear engages with the first pushing component and the second pushing component to drive the first pushing component and the second pushing component to move.

3. The door opening device according to claim 2, characterized in that: The circumference of the incomplete gear is partially provided with teeth to form a toothed surface, and the rest of the circumference of the incomplete gear is a smooth surface to form a toothless surface, and the toothed surface and the toothless surface are connected end to end to each other; Wherein, the arc length of the toothed surface is greater than the arc length of the toothless surface.

4. The door opening device according to claim 3, characterized in that: The diameter of the non-toothed surface is smaller than or equal to the root circle of the toothed surface.

5. The door opening device according to any one of claims 1 to 4, characterized in that: The first pushing component comprises: A second gear is rotatably disposed on the main body; a third gear meshing with the second gear; A first linkage gear meshing with the third gear; a first rack meshing with the first rack; A first pusher is connected to the first rack at an angle and is slidably disposed on the main body; The second pushing component comprises: Fourth gear; A second linkage gear connected to the fourth gear; a second rack meshing with the second linkage gear; A second pusher is connected to the second rack at an angle and is slidably disposed on the main body; Among them, when the transmission member rotates into the first rotation angle range, the transmission member is engaged with the second gear and separated from the fourth gear; when the transmission member rotates from the first rotation angle range into the second rotation angle range, the transmission member is engaged with both the second gear and the fourth gear.

6. The door opening device according to any one of claims 1 to 4, characterized in that: The door opening device also includes: A first micro switch, provided on the main body and located at a starting point of a stroke of the first pushing component and / or the second pushing component; A second micro switch is provided on the main body and is located at a travel end point of the first pushing component and / or the second pushing component; Wherein, under the condition that the first pushing component and / or the second pushing component are in contact with the first micro switch, the driving component stops moving, and under the condition that the first pushing component and / or the second pushing component are in contact with the second micro switch, the driving component drives the transmission member to reverse so that the first pushing component and the second pushing component retract.

7. The door opening device according to claim 6, characterized in that: The first micro switch and the second micro switch are located on the side where the first pushing component and the second pushing component have a longer extended length.

8. The door opening device according to claim 7, characterized in that: The first micro switch and the second micro switch are located on the side where the second pushing component is located. When the transmission member rotates from the second rotation angle range to the third rotation angle range, the transmission member is connected to the second pushing component and is separated from the first pushing component to drive the second pushing component to move.

9. An electrical device, characterized in that: It comprises a main body, a door body and a door opening device as described in any one of claims 1-8.

10. The electrical equipment according to claim 9, characterized in that: The electrical appliance comprises a refrigerator, wherein the door body of the refrigerator comprises a first door body and a second door body; Wherein, the first pushing component acts on the first door body, and the second pushing component acts on the second door body.

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