Door opening device and electrical equipment

Abstract

The utility model discloses a door opening device and electrical equipment. The technical problem that in the prior art, a driving part in a door opening device needs to frequently switch the running direction is solved. The door opening device comprises a driving part, a door jacking part and a steering assembly, the steering assembly comprises a driving wheel, a steering wheel and a driven wheel, and the driving wheel is connected to the output end of the driving part; the driving wheel has a first state meshed with the first meshing part and a second state meshed with the first meshing part through the steering wheel; the driven wheel can be meshed with one of the driving wheel and the steering wheel, so that the door jacking piece is switched between the stretching-out state and the reset state. The steering wheel plays a role in changing the rotating direction of the driven wheel, under the condition that the driving wheel does not change the moving direction, the driven wheel is driven by the steering wheel to move in different directions, in the working process, the driving part only needs to drive the driving wheel to move in the same direction, and damage to the driving part caused by frequent switching of the moving direction is avoided.

Description

Technical Field

[0001] This application belongs to the technical field of electrical equipment, and particularly relates to a door opening device and an electrical equipment. Background Art

[0002] The door opening device is used to control the opening of the door body of the electrical equipment. In the related art, the driving member of the door opening device usually needs to change the running direction to reset the door top member. Frequent changes in the running direction will damage the driving member and affect the service life of the driving member. Summary of the Invention

[0003] To solve the technical problems existing in the related art, this application provides a door opening device and an electrical equipment. The driven wheel is driven by the steering wheel to move in different directions. During the working process, the driving member only needs to drive the driving wheel to move in the same direction, avoiding damage to the driving member caused by frequent switching of the movement direction.

[0004] In the first aspect of this application, a door opening device is provided. The door opening device includes:

[0005] A driving member,

[0006] A door top member,

[0007] A steering assembly, including a driving wheel, a steering wheel and a driven wheel, the driving wheel is connected to the output end of the driving member;

[0008] The driven wheel has a first meshing portion;

[0009] The driving wheel has a first state of meshing with the first meshing portion and a second state of meshing with the first meshing portion through the steering wheel;

[0010] The driven wheel can mesh with one of the driving wheel or the steering wheel, so that the door top member switches between the extended state and the reset state.

[0011] In some embodiments, the driving wheel has one rotation direction under the drive of the driving member, and the driven wheel has two different rotation directions.

[0012] In some embodiments, in the same rotation direction of the driving wheel, the driving wheel directly meshes with the first meshing portion to drive the driven wheel to rotate along a first direction, or drives the driven wheel to rotate along a second direction through the steering wheel; the first direction and the second direction are opposite directions.

[0013] In some embodiments, when the first meshing portion meshes with the driving wheel, at least one of the driving wheel and the driven wheel is disengaged from the steering wheel, and the driven wheel rotates along the first direction.

[0014] In some embodiments, when the first engaging portion is disengaged from the driving wheel, the steering wheel drives the driven wheel to rotate along the second direction under the action of the driving wheel.

[0015] In some embodiments, the driving wheel has a second engaging portion and a second avoiding portion. The second engaging portion is adapted to engage with the first engaging portion. When the first engaging portion is disengaged from the driving wheel, the second avoiding portion faces the driven wheel.

[0016] In some embodiments, in the same rotation direction of the driving wheel, the second engaging portion and the second avoiding portion sequentially face the driven wheel.

[0017] In some embodiments, the lengths of the second engaging portion and the second avoiding portion are the same.

[0018] In some embodiments, the length of the second engaging portion is equal to the distance that the top door member moves from the extended state to the reset state.

[0019] In some embodiments, the steering wheel and the driving wheel are fully engaged, and the steering wheel engages with or disengages from the driven wheel.

[0020] In some embodiments, the driving wheel has a third engaging portion. The third engaging portion is fully engaged with the steering wheel, and the driving wheel is coupled to the output end of the driving member through the third engaging portion.

[0021] In some embodiments, the steering wheel has a fourth engaging portion and a fourth avoiding portion. The fourth engaging portion is adapted to engage with the first engaging portion. When the first engaging portion is engaged with the driving wheel, the fourth avoiding portion faces the driven wheel.

[0022] In some embodiments, the steering wheel and the driven wheel are fully engaged, and the steering wheel engages with or disengages from the driving wheel.

[0023] In some embodiments, the steering wheel has a fifth engaging portion and a fifth avoiding portion. The fifth engaging portion is adapted to engage with the driving wheel. When the first engaging portion is engaged with the driving wheel, the fifth avoiding portion faces the driving wheel.

[0024] In some embodiments, a thrust portion is provided on the driving wheel, and a force-receiving portion is provided on the steering wheel. The thrust portion pushes the force-receiving portion so that the fifth engaging portion enters an engaged state with the driving wheel.

[0025] In some embodiments, a sixth engaging portion that engages with the first engaging portion is formed on the top door member, and an avoidance notch is formed on the sixth engaging portion, and the avoidance notch is adapted to prevent tooth collision.

[0026] In a second aspect of the present application, an electrical device is provided, including the door opening device according to any one of the embodiments of the first aspect above.

[0027] According to the door opening device provided by one or more embodiments of the present application, the driving wheel can be directly engaged with the first engaging portion, and the rotating direction of the driven wheel is opposite to that of the driving wheel; the driving wheel is indirectly engaged with the first engaging portion through the steering wheel, and the rotating direction of the driven wheel is the same as that of the driving wheel. The steering wheel plays a role in changing the rotating direction of the driven wheel, so as to drive the top door member to switch between the extended state and the reset state, and further realize the reset of the top door member or the opening of the door body; without changing the moving direction of the driving wheel, the driven wheel is driven to move in different directions through the steering wheel. During the working process, the driving member only needs to drive the driving wheel to move in the same direction, avoiding damage to the driving member caused by frequent switching of the moving direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 FIG. 1 shows one of the three-dimensional structural schematic diagrams of the door opening device in one or more embodiments of the present application.

[0030] Figure 2 FIG. 2 shows another three-dimensional structural schematic diagram of the door opening device in one or more embodiments of the present application.

[0031] Figure 3 FIG. 3 shows a schematic diagram of the cooperation relationship between the driving wheel and the steering wheel of the door opening device in one or more embodiments of the present application.

[0032] Description of the reference numerals: 100 - driving member; 200 - top door member, 210 - sixth engaging portion, 211 - avoidance notch; 300 - driving wheel, 310 - second engaging portion, 320 - second avoidance portion, 330 - third engaging portion, 340 - thrust portion, 341 - first inclined surface; 400 - steering wheel, 410 - fourth engaging portion, 420 - fourth avoidance portion, 430 - fifth engaging portion, 440 - fifth avoidance portion, 450 - force receiving portion, 451 - second inclined surface; 500 - driven wheel, 510 - first engaging portion; 600 - base. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0034] In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0035] The door opening device drives the door top member to open the door body through the driving member, so that the door body is opened. In the related art, the driving member of the door opening device usually needs to change the running direction to reset the door top member. Frequent changes in the running direction will damage the driving member and affect the service life of the driving member. For example, after the door opening device drives the door top member to open the door body by the forward rotation of the motor, the motor needs to rotate in the reverse direction to reset the door top member. However, frequent switching of the running direction of the motor during operation will cause losses to the motor and affect the service life of the motor.

[0036] According to the first aspect of the present application, a door opening device is provided, and the door opening device is used for opening a door body.

[0037] Please refer to Figures 1 to 3 , which respectively show the structural schematic diagrams of the door opening device in different states and different perspectives. Please refer to Figures 1 to 2 , the door opening device includes a driving member 100, a door top member 200 and a steering assembly. The steering assembly includes a driving wheel 300, a steering wheel 400 and a driven wheel 500. The driving wheel 300 is connected to the output end of the driving member 100; the driven wheel 500 has a first engagement portion 510; the driving wheel has a first state of engaging with the first engagement portion 510 and a second state of engaging with the first engagement portion 510 through the steering wheel 400; the driven wheel 500 can engage with one of the driving wheel 300 or the steering wheel 400, so that the door top member 200 switches between the extended state and the reset state. Among them, Figure 1 is the three-dimensional structural schematic diagram of the door top member 200 in the extended state, Figure 2 is the three-dimensional structural schematic diagram of the door top member 200 in the reset state.

[0038] The driving wheel 300 can be directly meshed with the first meshing part 510, and the rotating direction of the driven wheel 500 is opposite to that of the driving wheel 300; the driving wheel 300 is indirectly meshed with the first meshing part 510 through the steering wheel 400, and the rotating direction of the driven wheel 500 is the same as that of the driving wheel 300. The steering wheel 400 plays a role in changing the rotating direction of the driven wheel 500, so as to drive the top door part 200 to be in the extended state or the reset state, and further realize the reset of the top door part 200 or the opening of the door body; when the driving wheel 300 does not change the moving direction, the driven wheel 500 is driven by the steering wheel 400 to move in different directions. During the working process, the driving part 100 only needs to drive the driving wheel 300 to move in the same direction, avoiding damage to the driving part 100 caused by frequent switching of the moving direction.

[0039] The top door part 200 can be meshed with the first meshing part 510, so that the driven wheel 500 and the top door part 200 keep synchronous movement to realize the driven wheel 500 driving the top door part 200 to switch between the extended state and the reset state; the first meshing part 510 can be meshed with the driving wheel 300 or the steering wheel 400, and the power can also be transmitted to the top door part 200 through the first meshing part 510, which is convenient for the processing of the driven wheel 500.

[0040] The driven wheel 500 can be meshed with one of the driving wheel 300 or the steering wheel 400, so that the driven wheel 500 is directly or indirectly meshed with the driving wheel 300, so that the power of the driving wheel 300 is transmitted to the driven wheel 500, and the driven wheel 500 can move in different directions in the same moving direction of the driving wheel 300. The rotating direction of the driven wheel 500 can be smoothly switched without switching the rotating direction of the driving wheel 300, which is beneficial to increasing the service life of the door opening device.

[0041] The door opening device can include a base 600, and the driving part 100, the top door part 200 and the steering assembly can be installed on the base 600. The base 600 can be installed on the main body of the electrical equipment to fix the door opening device to the main body of the electrical equipment, which is convenient for opening the door body through the door opening device.

[0042] It can be understood that when the door body is closed, the top door part 200 is in the starting position; the driven wheel 500 rotates, so that the top door part 200 extends out of the main body to push open the door body; when the top door part 200 is in the extended state, it can be that the top door part 200 pushes open the door body to form a door gap, or it can be that the top door part 200 completely pushes open the door body; after the door body is opened, the top door part 200 retracts under the action of the driven wheel 500; when the top door part 200 is in the reset state, it means that the top door part 200 is in the starting position.

[0043] The driving wheel 300 is connected to the output end of the driving member 100 so that the driving member 100 drives the driving wheel 300 to rotate, and the driving member 100 provides power for the movement of the driving wheel 300.

[0044] Please refer to Figure 1 , in some embodiments, the driving wheel 300 has a rotation direction under the drive of the driving member 100, and the driven wheel 500 has two different rotation directions. By rotating the driving wheel 300 in one direction, the driven wheel 500 is driven to switch different rotation directions, so as to realize the switching of the top door member 200 between the extended state and the reset state. When the driving member 100 works, the driving wheel 300 can rotate forward or backward under the drive of the driving member 100. However, the running direction of the driving member 100 does not change during the working process, that is, the driving wheel 300 maintains the same movement direction during the working process. By the steering wheel 400, the rotation direction of the driven wheel 500 can be switched, and the driven wheel 500 can be driven to rotate along two directions, so as to drive the top door member 200 to switch between the extended state and the reset state. In the embodiment of the present application, without changing the rotation direction of the driving wheel 300, the steering wheel 400 can realize the commutation of the driven wheel 500, and the reset of the top door member 200 can be realized without the driving member 100 changing the running direction.

[0045] Please refer to Figure 1 , in some embodiments, in the same rotation direction of the driving wheel 300, the driving wheel 300 directly meshes with the first meshing portion 510 to drive the driven wheel 500 to rotate along the first direction, or drives the driven wheel 500 to rotate along the second direction through the steering wheel 400; the first direction and the second direction are opposite directions. That is to say, in the same rotation direction of the driving wheel 300, the rotation direction of the driven wheel 500 can be switched between the first direction and the second direction, so that the top door member 200 switches between the extended state and the reset state.

[0046] Please refer to Figures 1 to 2 , in some embodiments, when the driven wheel 500 rotates along one of the first direction (such as Figure 1 the a direction in Figure 2 ) and the second direction (such as

[0047] the b direction in ), the top door member 200 switches to the extended state, and when the driven wheel 500 rotates along the other of the first direction and the second direction, the top door member 200 switches to the reset state.For example, initially, the top door member 200 is in the reset state. The driving member 100 operates, and the driving wheel 300 rotates in the same direction. The driving wheel 300 meshes directly with the driven wheel 500, causing the driven wheel 500 to rotate in the first direction, so that the top door member 200 extends to open the door body. The driving member 100 continues to operate, and the driving wheel 300 maintains the rotation direction unchanged. The driving wheel 300 meshes with the driven wheel 500 through the steering wheel 400, causing the driven wheel 500 to rotate in the second direction, so that the top door member 200 retracts and the top door member 200 is in the reset state to prevent the top door member 200 from hindering the closing of the door body. In other embodiments, it may also be that the driven wheel 500 rotates in the first direction to switch the top door member 200 to the extended state, and the driven wheel 500 rotates in the second direction to drive the top door member 200 to move to the starting position. The present application does not make special limitations on this.

[0048] Please refer to Figures 1 to 2 , in some embodiments, when the first engaging portion 510 meshes with the driving wheel 300, at least one of the driving wheel 300 and the driven wheel 500 is disengaged from the steering wheel 400, so that the driving wheel 300 can directly drive the driven wheel 500 to rotate, avoiding the steering wheel 400 interfering with the normal rotation of the driven wheel 500 to ensure that the driven wheel 500 rotates in the first direction.

[0049] Please refer to Figures 1 to 2 , in some embodiments, when the first engaging portion 510 is disengaged from the driving wheel 300, under the action of the driving wheel 300, the steering wheel 400 can smoothly transmit the power of the driving wheel 300 to the driven wheel 500 to drive the driven wheel 500 to rotate in the second direction.

[0050] Please refer to Figures 1 to 2 , in some embodiments, the driving wheel 300 has a second engaging portion 310 and a second avoiding portion 320. The second engaging portion 310 is adapted to mesh with the first engaging portion 510, and through the cooperation of the first engaging portion 510 and the second engaging portion 310, the power transmission between the driving wheel 300 and the driven wheel 500 is achieved; when the first engaging portion 510 is disengaged from the driving wheel 300, the second avoiding portion 320 faces the driven wheel 500 to cut off the direct meshing between the driving wheel 300 and the driven wheel 500, facilitating the driving wheel 300 to control the driven wheel 500 to rotate in the second direction through the steering wheel 400.

[0051] Please refer to Figures 1 to 2, in some embodiments, in the same rotation direction of the driving wheel 300, the second engaging portion 310 and the second avoiding portion 320 are sequentially oriented towards the driven wheel 500. When the second engaging portion 310 faces the driven wheel 500, the first engaging portion 510 and the second engaging portion 310 are engaged, causing the driven wheel 500 to rotate along the first direction; when the second avoiding portion 320 faces the driven wheel 500, the driving wheel 300 and the driven wheel 500 are disengaged, facilitating the driving wheel 300 to control the driven wheel 500 to rotate along the second direction through the steering wheel 400, so that when the driving wheel 300 rotates along the same direction, the driven wheel 500 can switch the rotation between the first direction and the second direction, causing the top door member 200 to switch between the extended state and the reset state.

[0052] Please refer to Figures 1 to 2 , in some embodiments, the steering wheel 400 and the driving wheel 300 are fully engaged to keep the steering wheel 400 and the driving wheel 300 rotating synchronously; the steering wheel 400 is engaged with or disengaged from the driven wheel 500; when the driving wheel 300 and the driven wheel 500 are disengaged, that is, when the second avoiding portion 320 faces the driven wheel 500, the steering wheel 400 is engaged with the driven wheel 500, enabling the driving wheel 300 to drive the driven wheel 500 to rotate along the second direction through the steering wheel 400; when the driving wheel 300 is engaged with the driven wheel 500, that is, when the second engaging portion 310 faces the driven wheel 500, the driving wheel 300 drives the driven wheel 500 to rotate along the first direction, and at this time, the steering wheel 400 and the driven wheel 500 are disengaged to avoid the movement of the steering wheel 400 rotating synchronously with the driving wheel 300 from interfering with the movement of the driven wheel 500.

[0053] Please refer to Figures 1 to 2 , in some embodiments, the driving wheel 300 has a third engaging portion 330, the third engaging portion 330 is fully engaged with the steering wheel 400, and the driving wheel 300 is coupled to the output end of the driving member 100 through the third engaging portion 330. Through the third engaging portion 330, the power transmission between the driving member 100 and the driving wheel 300 and the power transmission between the driving wheel 300 and the steering wheel 400 can be achieved, thereby simplifying the structure of the driving wheel 300 and saving the processing process and cost of the driving wheel 300. Generally, the driving member 100 is a motor, and the output end of the driving member 100 is the output shaft of the motor. A speed reducer can be provided between the driving wheel 300 and the driving member 100 to adjust the rotation speed of the driving wheel 300.

[0054] Please refer to Figures 1 to 2 , in some embodiments, the lengths of the second engaging portion 310 and the second avoiding portion 320 are the same.

[0055] It can be understood that when the second avoidance portion 320 faces the driven wheel 500, the steering wheel 400 drives the driven wheel 500 to rotate along the second direction under the drive of the driving wheel 300. Therefore, the length of the second avoidance portion 320 determines the meshing length between the steering wheel 400 and the driven wheel 500; the length of the second meshing portion 310 is the same as that of the second avoidance portion 320, so that the meshing length between the first meshing portion 510 and the second meshing portion 310 is equal to the meshing length between the first meshing portion 510 and the steering wheel 400, ensuring that the rotation time of the driven wheel 500 along the first direction is equal to the rotation time along the second direction, thereby ensuring that the driven wheel 500 can drive the top door member 200 to reset.

[0056] Please refer to Figures 1 to 2 , in some embodiments, the length of the second meshing portion 310 is equal to the distance that the top door member 200 moves from the extended state to the reset state.

[0057] It can be understood that the second meshing portion 310 meshes with the first meshing portion 510, so that the driving wheel 300 drives the driven wheel 500 to rotate along the first direction, causing the top door member 200 to switch between the extended state and the reset state.

[0058] Please refer to Figures 1 to 2 , in some embodiments, the steering wheel 400 has a fourth meshing portion 410 and a fourth avoidance portion 420. The fourth meshing portion 410 is adapted to mesh with the first meshing portion 510; when the first meshing portion 510 meshes with the driving wheel 300, the fourth avoidance portion 420 faces the driven wheel 500, so that the steering wheel 400 and the driven wheel 500 are disengaged, avoiding interference of the rotation of the steering wheel 400 with the movement of the driven wheel 500. Through the fourth meshing portion 410 and the fourth avoidance portion 420, the power transmission or disconnection between the steering wheel 400 and the driven wheel 500 can be achieved without a clutch.

[0059] In some embodiments, the steering wheel 400 is fully meshed with the driven wheel 500, so that the steering wheel 400 and the driven wheel 500 move synchronously, facilitating the driving wheel 300 to drive the driven wheel 500 to rotate through the steering wheel 400; the steering wheel 400 meshes with or disengages from the driving wheel 300. When the driving wheel 300 is disengaged from the driven wheel 500, the steering wheel 400 meshes with the driving wheel 300, enabling the steering wheel 400 to transmit the power of the driving wheel 300 to the driven wheel 500 and enabling the driven wheel 500 to change the movement direction; when the driving wheel 300 meshes with the driven wheel 500, the steering wheel 400 disengages from the driving wheel 300 to avoid interference of the steering wheel 400 with the movement of the driven wheel 500. At the same time, by cutting off the power transmission between the steering wheel 400 and the driving wheel 300, the energy of the driving wheel 300 can be prevented from being damaged.

[0060] Please refer to Figure 3 In some embodiments, the steering wheel 400 has a fifth engaging portion 430 and a fifth avoiding portion 440. The fifth engaging portion 430 is adapted to engage with the driving wheel 300. When the first engaging portion 510 engages with the driving wheel 300, the fifth avoiding portion 440 faces the driving wheel 300, so that the steering wheel 400 and the driving wheel 300 are disengaged, avoiding interference of the rotation of the steering wheel 400 with the movement of the driving wheel 300. Through the fifth engaging portion 430 and the fifth avoiding portion 440, the steering wheel 400 can achieve power transmission or disconnection between the steering wheel 400 and the driving wheel 300 without a clutch, with a simple structure and small occupied space, which is conducive to miniaturization of the door opening device.

[0061] In some embodiments, a thrust portion 340 is provided on the driving wheel 300, and a force receiving portion 450 is provided on the steering wheel 400. The thrust portion 340 pushes the force receiving portion 450, so that the fifth engaging portion 430 engages with the driving wheel 300. When the driving wheel 300 and the steering wheel 400 are disengaged, it is impossible to make the driving wheel 300 and the steering wheel 400 enter the engaging state only by the rotation of the driving wheel 300 itself. In the embodiment of the present application, during the rotation of the driving wheel 300, through the action of the thrust portion 340 and the force receiving portion 450, the driving wheel 300 and the steering wheel 400 are changed from the disengaged state to the engaged state, so as to realize the transition of power transmission and disconnection between the driving wheel 300 and the steering wheel 400, thereby achieving the effect that the driving member 100 can independently control the movement of any one of the door top members 200.

[0062] Please refer to Figure 3 In some embodiments, the thrust portion 340 is located on a side of the corresponding force receiving portion 450 away from the corresponding fifth avoiding portion 440. When the thrust portion 340 pushes the force receiving portion 450, the force receiving portion 450 rotates toward the side close to the fifth avoiding portion 440, so that the fifth engaging portion 430 engages with the driving wheel 300, thereby realizing power transmission between the driving wheel 300 and the driven wheel 500.

[0063] Please refer to Figure 3 In some embodiments, the force receiving portion 450 is arranged in a staggered manner with the fifth engaging portion 430, so that when the driving wheel 300 and the steering wheel 400 are disengaged, the force receiving portion 450 can face the driving wheel 300, which is beneficial for the thrust portion 340 to apply force to the force receiving portion 450, so that the driving wheel 300 and the steering wheel 400 are changed from the disengaged state to the engaged state. The force receiving portion 450 is arranged in a staggered manner with the fifth engaging portion 430, that is, in the rotation direction of the steering wheel 400, the force receiving portion 450 is staggered with the fifth engaging portion 430. The force receiving portion 450 can be located at one end of the fifth engaging portion 430, so that after the thrust portion 340 pushes the force receiving portion 450, the fifth engaging portion 430 can quickly engage with the driving wheel 300.

[0064] Please refer to Figure 3 Figure 3 , in some embodiments, the sum of the maximum distance between the thrust portion 340 and the center of the driving wheel 300 and the maximum distance between the force-receiving portion 450 and the center of the steering wheel 400 is greater than or equal to the distance between the center of the driving wheel 300 and the center of the steering wheel 400, so as to ensure that the thrust portion 340 of the driving wheel 300 can act on the force-receiving portion 450 of the steering wheel 400. When the steering wheel 400 and the driving wheel 300 are disengaged, the fifth avoidance portion 440 of the steering wheel 400 faces the driving wheel 300. If the maximum distance between the thrust portion 340 and the center of the driving wheel 300 is less than the maximum distance between the transmission teeth and the center of the driving wheel 300, the thrust portion 340 cannot act on the force-receiving portion 450. Among them, the maximum distance between the thrust portion 340 and the center of the driving wheel 300 is the maximum distance between the outer contour of the thrust portion 340 and the center of the driving wheel 300; the maximum distance between the force-receiving portion 450 and the center of the steering wheel 400 is the maximum distance between the outer contour of the force-receiving portion 450 and the center of the steering wheel 400. As shown in the figure, the thrust portion 340 and the force-receiving portion 450 can both be strip-shaped, the thrust portion 340 extends along the radial direction of the driving wheel 300, and the force-receiving portion 450 extends along the radial direction of the steering wheel 400; as shown in the figure, it is also possible that the thrust portion 340 is strip-shaped and the force-receiving portion 450 is block-shaped; it is also possible that the force-receiving portion 450 is strip-shaped and the thrust portion 340 is block-shaped. The specific shapes of the thrust portion 340 and the force-receiving portion 450 in the embodiments of the present application are not particularly limited.

[0065] Please refer to Figure 3 Figure 3 , in some embodiments, a first inclined surface 341 is formed on the thrust portion 340 facing the side wall of the driving wheel 300; through the first inclined surface 341, while ensuring that the thrust portion 340 can act on the force-receiving portion 450, the occupied space of the thrust portion 340 can be reduced, so as to reduce the volume of the driving wheel 300.

[0066] Please refer to Figure 3 Figure 3 , in some embodiments, a second inclined surface 451 is formed on the force-receiving portion 450 facing the side wall of the steering wheel 400; through the second inclined surface 451, while ensuring that the force-receiving portion 450 can withstand the thrust of the thrust portion 340, the occupied space of the force-receiving portion 450 can be reduced, so as to reduce the volume of the steering wheel 400.

[0067] Please refer to Figure 3 Figure 3 , in some embodiments, a first inclined surface 341 can be formed on the thrust portion 340 facing the side wall of the driving wheel 300, and at the same time, a second inclined surface 451 can be formed on the force-receiving portion 450 facing the side wall of the steering wheel 400. The embodiments of the present application do not make special limitations on this.

[0068] Please refer to Figure 1, in some embodiments, a sixth engaging portion 210 that engages with the first engaging portion 510 is formed on the top door member 200. Through the engagement of the first engaging portion 510 and the sixth engaging portion 210, the driven wheel 500 can smoothly drive the top door member 200 to move. Of course, in other embodiments, other engaging structures can also be correspondingly provided between the driven wheel 500 and the top door member 200, such as a stepped engaging structure, to achieve the driven wheel 500 driving the top door member 200 to move.

[0069] Please refer to Figure 3 , in some embodiments, an avoidance notch 211 is formed on the sixth engaging portion 210. The avoidance notch 211 is suitable for preventing tooth collision and helps the driven wheel 500 and the sixth engaging portion 210 to smoothly enter the engaged state.

[0070] An embodiment of the second aspect of the present application provides an electrical appliance, including the door opening device of any one of the embodiments of the first aspect above. The electrical appliance can be a refrigerator, a dishwasher, a disinfection cabinet, etc.

[0071] In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0072] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0073] It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0074] In this application, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0075] In addition, in this application, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "a plurality" is two or more, unless otherwise clearly and specifically defined.

[0076] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 this application. In this specification, the schematic expressions of the above terms do 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, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0077] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0078] Although the embodiments of this application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of this application. The scope of this application is defined by the claims and their equivalents.

Claims

1. A door opening device, characterized in that: include: A driving member (100), Top door member (200), A steering assembly, comprising a driving wheel (300), a steering wheel (400) and a driven wheel (500), wherein the driving wheel (300) is connected to an output end of the driving member (100); The driven wheel (500) has a first meshing portion (510); The driving wheel (300) has a first state in which it is meshed with the first meshing portion (510) and a second state in which it is meshed with the first meshing portion (510) through the steering wheel (400); The driven wheel (500) can be meshed with one of the driving wheel (300) or the steering wheel (400), so that the top door member (200) is switched between an extended state and a reset state.

2. The door opening device according to claim 1, characterized in that: The driving wheel (300) has one rotation direction when driven by the driving member (100), and the driven wheel (500) has two different rotation directions.

3. The door opening device according to claim 1, characterized in that: In the same rotation direction of the driving wheel (300), the driving wheel (300) directly meshes with the first meshing portion (510) to drive the driven wheel (500) to rotate along a first direction, or drives the driven wheel (500) to rotate along a second direction through the steering wheel (400); the first direction and the second direction are opposite directions.

4. The door opening device according to claim 3, characterized in that: When the first meshing portion (510) and the driving wheel (300) are meshed, at least one of the driving wheel (300) and the driven wheel (500) is disengaged from the steering wheel (400), and the driven wheel (500) rotates in a first direction.

5. The door opening device according to claim 3, characterized in that: When the first meshing portion (510) and the driving wheel (300) are out of engagement, the steering wheel (400), under the action of the driving wheel (300), drives the driven wheel (500) to rotate along the second direction.

6. The door opening device according to claim 5, characterized in that: The driving wheel (300) comprises a second meshing portion (310) and a second avoiding portion (320), wherein the second meshing portion (310) is adapted to mesh with the first meshing portion (510); when the first meshing portion (510) and the driving wheel (300) are out of engagement, the second avoiding portion (320) faces the driven wheel (500).

7. The door opening device according to claim 6, characterized in that: In the same rotation direction of the driving wheel (300), the second meshing portion (310) and the second avoiding portion (320) are directed toward the driven wheel (500) in sequence.

8. The door opening device according to claim 6, characterized in that: The second meshing portion (310) and the second avoiding portion (320) have the same length.

9. The door opening device according to claim 6, characterized in that: The length of the second meshing portion (310) is equal to the distance the top door member (200) moves when switching from the extended state to the reset state.

10. The door opening device according to any one of claims 1 to 3, characterized in that: The steering wheel (400) and the driving wheel (300) are fully meshed, and the steering wheel (400) and the driven wheel (500) are meshed or disengaged.

11. The door opening device according to claim 10, characterized in that: The driving wheel (300) has a third meshing portion (330), the third meshing portion (330) is completely meshed with the steering wheel (400), and the driving wheel (300) is coupled to the output end of the driving member (100) via the third meshing portion (330).

12. The door opening device according to any one of claims 1 to 3, characterized in that: The steering wheel (400) has a fourth meshing portion (410) and a fourth avoidance portion (420), wherein the fourth meshing portion (410) is adapted to mesh with the first meshing portion (510); when the first meshing portion (510) and the driving wheel (300) are meshed, the fourth avoidance portion (420) faces the driven wheel (500).

13. The door opening device according to any one of claims 1 to 3, characterized in that: The steering wheel (400) is fully meshed with the driven wheel (500), and the steering wheel (400) is meshed with or disengaged from the driving wheel (300).

14. The door opening device according to claim 13, characterized in that: The steering wheel (400) has a fifth meshing portion (430) and a fifth avoidance portion (440), wherein the fifth meshing portion (430) is adapted to mesh with the driving wheel (300); when the first meshing portion (510) and the driving wheel (300) are meshed, the fifth avoidance portion (440) faces the driving wheel (300).

15. The door opening device according to claim 14, characterized in that: The driving wheel (300) is provided with a thrust portion (340), and the steering wheel (400) is provided with a force-bearing portion (450), and the thrust portion (340) pushes the force-bearing portion (450), so that the fifth meshing portion (430) and the driving wheel (300) enter a meshing state.

16. The door opening device according to any one of claims 1 to 3, characterized in that: A sixth engaging portion (210) engaged with the first engaging portion (510) is formed on the top door member (200), and an avoidance notch (211) is formed on the sixth engaging portion (210), wherein the avoidance notch (211) is suitable for preventing tooth collision.

17. An electrical device, characterized in that: The door opening device comprises the door opening device as described in any one of claims 1 to 16.

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