Door opening device, electrical equipment and resetting method of door opening device

Abstract

The invention relates to the technical field of electrical equipment, and discloses a door opening device, electrical equipment and a reset method of the door opening device. The door opening device comprises a base, a door jacking piece, a transmission wheel and a driving assembly, the door jacking piece is installed on the base, and the transmission wheel is rotationally connected to the base; the transmission wheel comprises a first transmission part; the driving assembly is used for driving the transmission wheel to rotate in the same direction, so that the first transmission part is engaged with or disengaged from the door opening transmission strip or the door closing transmission strip. Under the condition that the first transmission part is meshed with the door opening transmission strip, the door jacking part extends out to jack the door body; and under the condition that the transmission wheel is meshed with the door closing transmission strip, the door jacking part retracts. Under the condition that the first transmission part is separated from the door opening transmission strip and the door closing transmission strip, if the door opening device is powered off and cannot drive the door jacking piece to reset, the door jacking piece is separated from the transmission wheel, the door jacking piece is not limited by the first transmission part any more, the door body is manually closed at the moment, the door jacking part retracts under the action of the door body, and the door body is manually closed.

Description

Technical Field

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

[0002] In the related art, electrical equipment uses a door opening device to open the door body; the door opening device extends a door-lifting member to push the door body open, and the door-lifting member returns to its original position, and the door body can be manually closed. However, after the door-lifting member extends to push the door body open, if there is a power failure, the door-lifting member cannot automatically retract, resulting in the door body being unable to be closed. Summary of the invention

[0003] In order to solve the technical problem that the door body cannot be closed due to power failure of the current door opening device, the present application provides a door opening device, which can reduce the risk that the door opening device cannot be reset due to power failure.

[0004] In a first aspect of the present application, a door opening device is provided, comprising:

[0005] Pedestal;

[0006] A door top member is mounted on the base; the door top member comprises a door top portion, a door opening transmission bar and a door closing transmission bar which are arranged opposite to each other, and the door top portion is connected to the door opening transmission bar and the door closing transmission bar;

[0007] A transmission wheel, rotatably connected to the base; the transmission wheel includes a first transmission part;

[0008] A driving assembly, used for driving the transmission wheel to rotate;

[0009] Wherein, when the driving assembly drives the transmission wheel to rotate in the same direction, the first transmission part engages or disengages with the door opening transmission bar, or engages or disengages with the door closing transmission bar; wherein, when the first transmission part engages with the door opening transmission bar, the door push-up part extends to push open the door body; when the transmission wheel engages with the door closing transmission bar, the door push-up part retracts.

[0010] In some embodiments, the door opening transmission bar and / or the door closing transmission bar are arranged along the extending direction of the top door portion.

[0011] In some embodiments, the first transmission part is a wheel body, a first transmission tooth is convexly provided on a circumferential side of the first transmission part, and a length of the first transmission tooth is smaller than a circumference of the first transmission part.

[0012] In some embodiments, the length of the first transmission tooth is smaller than the distance between the door opening transmission bar and the door closing transmission bar.

[0013] In some embodiments, the top door member further includes a main body portion, the top door portion is connected to the main body portion, and the door opening transmission bar and the door closing transmission bar are arranged on the main body portion.

[0014] In some embodiments, the main body is provided with a movable groove, and the first transmission part is arranged in the movable groove; the movable groove has a first inner wall and a second inner wall arranged opposite to each other, the door opening transmission strip is arranged on the first inner wall, and the door closing transmission strip is arranged on the second inner wall.

[0015] In some embodiments, the base is provided with an elastic member; when the top door member is in a reset state, the top door member abuts against the elastic member.

[0016] In some embodiments, the driving assembly includes a driving wheel, and at least two of the top door members and the transmission wheels are provided, and the top door members and the transmission wheels correspond to each other; the driving wheel includes a first engaging portion, and the driving wheels rotate in the same direction so that the first engaging portion engages with one of the transmission wheels and disengages from the other transmission wheel.

[0017] In some embodiments, the first meshing portion is a wheel body, a first meshing tooth is convexly provided on a circumferential side of the first meshing portion, and a length of the first meshing tooth is smaller than a circumference of the first meshing portion.

[0018] In some embodiments, the door opening device further includes an angle sensor, which is mounted on the base and is used to detect the angle of the driving wheel.

[0019] In the second aspect of the present application, an electrical device is provided, comprising a housing, a door and a door opening device as described in any embodiment of the first aspect, wherein the door is rotatably connected to the housing; the door opening device is installed on the housing and is used to drive the door to rotate relative to the housing so that the door opens.

[0020] In a third aspect of the present application, a method for resetting a door opening device is provided. Based on the door opening device described in any embodiment of the first aspect, the driving assembly includes a driving wheel, and at least two of the top door members and the transmission wheels are provided, and the top door members and the transmission wheels correspond to each other; the driving wheel includes a first meshing portion, and the driving wheels rotate in the same direction so that the first meshing portion meshes with one of the transmission wheels and disengages from the other transmission wheel; the method includes:

[0021] Obtaining angle information of the driving wheel;

[0022] If the difference between the angle information and the first reset angle is less than or equal to 90 degrees, controlling the driving wheel to rotate to the first reset angle;

[0023] If the difference between the angle information and the second reset angle is less than 90 degrees, controlling the driving wheel to rotate to the second reset angle;

[0024] The difference between the first reset angle and the second reset angle is 180 degrees.

[0025] According to the door opening device provided by one or more embodiments of the present application, during the process of the transmission wheel rotating in the same direction, when the first transmission part is engaged with the door opening transmission strip, the first transmission part is disengaged from the door closing transmission strip, and as the transmission wheel rotates, the door opening transmission strip extends, and the top door part extends accordingly to push open the door body; when the top door part is fully extended, the door body is pushed open, and at this time the first transmission part is disengaged from the door opening transmission strip, so that the door opening transmission strip no longer continues to extend as the transmission wheel rotates, and the first transmission part has not yet engaged with the door closing transmission strip, and the transmission wheel no longer restricts the movement of the top door piece; if the transmission wheel continues to rotate, the first transmission part is engaged with the door closing transmission strip, so that the door closing transmission strip retracts as the transmission wheel rotates, and the top door part retracts accordingly, thereby resetting the top door piece; if the door opening device is powered off and the top door piece cannot be reset, the door body is manually closed, and the top door piece retracts and resets under the action of the door body, thereby manually closing the door body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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.

[0027] Figure 1 A schematic diagram of the structure of a door opening device in one or more embodiments of the present application is shown.

[0028] Figure 2 A schematic diagram of the structure of a door opening device in one or more embodiments of the present application is shown.

[0029] Figure 3 A schematic diagram of the structure of a door opening device in one or more embodiments of the present application is shown.

[0030] Figure 4 A schematic diagram showing the matching relationship between the top door member and the transmission wheel of the door opening device in one or more embodiments of the present application is shown.

[0031] Figure 5 A schematic diagram of the structure of a door opening device in one or more embodiments of the present application is shown.

[0032] Figure 6A schematic diagram showing the matching relationship between the driving wheel and the transmission wheel of the door opening device in one or more embodiments of the present application is shown.

[0033] Figure 7 A schematic diagram of the structure of a door opening device in one or more embodiments of the present application is shown.

[0034] Figure 8 A schematic diagram of the structure of a door opening device in one or more embodiments of the present application is shown.

[0035] Fig. 9 A schematic diagram of the structure of a door opening device in one or more embodiments of the present application is shown.

[0036] Fig.10 A schematic diagram of the structure of a door opening device in one or more embodiments of the present application is shown.

[0037] Description of reference numerals: 100-base, 110-guide rail, 120-opening, 200-top door member, 210-top door portion, 220-main body, 221-door opening transmission strip, 222-door closing transmission strip, 223-movable groove, 223a-first inner wall, 223b-second inner wall, 224-second transmission tooth, 225-force column, 230-first top door member, 240-second top door member, 250-rubber sleeve, 300-transmission wheel, 31 0-first transmission part, 311-first transmission tooth, 320-second transmission part, 330-first transmission wheel, 340-second transmission wheel, 400-driving assembly, 410-driving wheel, 411-first meshing part, 411a-first meshing tooth, 412-second meshing part, 413-reducer, 510-first sensor, 520-second sensor, 600-elastic member, 700-box, 800-door body, 900-angle sensor. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0039] In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0040] In the related art, electrical equipment uses a door opening device to open the door body; the door opening device extends a door-lifting member to push the door body open, and the door-lifting member returns to its original position, and the door body can be manually closed. However, after the door-lifting member extends to push the door body open, if there is a power failure, the door-lifting member cannot automatically retract, resulting in the door body being unable to be closed.

[0041] For example, the main body and door body of the refrigerator are rotatably connected; the motor of the door opening device drives the top door piece to extend to open the door body, and the motor of the door opening device drives the top door piece to retract, so that the door body can be closed manually; however, after opening the door, the top door piece may not be able to automatically reset due to power failure of the door opening device. Since the top door piece is extended and cannot be reset, the top door piece hinders the door body from closing, making it impossible to close the door manually.

[0042] According to the first aspect of the present application, a door opening device is provided, wherein a door opening member of the door opening device can extend to open a door body to open the door body. When the door opening member is fully extended, if the door opening device is powered off, the door body can be manually closed and the door opening member can be pushed back to reset.

[0043] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 , respectively showing the structural schematic diagram and cross-sectional view of the door opening device in different states and different viewing angles.

[0044] See also Figure 1 The door opening device includes a base 100, a top door member 200, a transmission wheel 300 and a driving assembly 400. The top door member 200 is installed on the base 100, and the transmission wheel 300 is rotatably connected to the base 100; the top door member 200 includes a top door portion 210, a door opening transmission bar 221 and a door closing transmission bar 222 that are arranged opposite to each other, and the top door portion 210 connects the door opening transmission bar 221 and the door closing transmission bar 222; the transmission wheel 300 includes a first transmission portion 310; the driving assembly 400 is used to drive the transmission wheel 300 to rotate in the same direction (such as Figure 1 a direction), so that the first transmission part 310 is engaged with or disengaged from the door opening transmission strip 221 or the door closing transmission strip 222; when the first transmission part 310 is engaged with the door opening transmission strip 221, the door top part 210 extends out to open the door body 800; when the transmission wheel 300 is engaged with the door closing transmission strip 222, the door top part 210 retracts.

[0045] The first transmission part 310 is meshed with the door opening transmission strip 221, driving the top door part 210 to extend and open the door body 800, thereby realizing door opening; the first transmission part 310 is meshed with the door closing transmission strip 222, driving the top door part 210 to retract, and the top door member 200 is reset. At this time, the door body 800 can be manually closed; under the drive of the drive assembly 400, the transmission wheel 300 rotates in the same direction, which can realize door opening and resetting of the top door member 200; when the first transmission part 310 is disengaged from the door opening transmission strip 221 and the door closing transmission strip 222, if the door opening device is powered off, it is impossible to drive the top door member 200 to reset. At this time, the top door member 200 is disengaged from the transmission wheel 300, and the top door member 200 is no longer restricted by the first transmission part 310. At this time, the door body 800 is manually closed, and the top door part 210 is retracted by the action of the door body 800, thereby realizing manual closing of the door body 800.

[0046] During the rotation of the transmission wheel 300 in the same direction, when the first transmission part 310 is engaged with the door opening transmission strip 221, the first transmission part 310 is disengaged from the door closing transmission strip 222. As the transmission wheel 300 rotates, the door opening transmission strip 221 extends, and the door lifting part 210 extends accordingly to push open the door body 800. When the door lifting part 200 extends to the maximum stroke, the door body 800 is pushed open, and at this time, the first transmission part 310 is disengaged from the door opening transmission strip 221, so that the door opening transmission strip 221 no longer continues to extend as the transmission wheel 300 rotates. When the first transmission part 310 is out and the first transmission part 310 has not yet engaged with the door closing transmission strip 222, the transmission wheel 300 no longer restricts the movement of the top door member 200; if the transmission wheel 300 continues to rotate, the first transmission part 310 engages with the door closing transmission strip 222, so that the door closing transmission strip 222 retracts with the rotation of the transmission wheel 300, and the top door part 210 retracts accordingly until the top door member 200 retracts to the reset state; if the door opening device is powered off and the top door member 200 cannot be reset, the door body 800 is closed manually, and the top door member 200 retracts under the action of the door body 800, thereby realizing manual closing of the door body 800.

[0047] It should be noted that the top door member 200 extends to the maximum stroke, which means that the top door portion 210 is completely extended from the base 100, or partially extended from the base 100, as long as the length of the top door member 200 is enough to open the door body 800; the top door member 200 is in the reset state, which means that the top door member 200 is retracted to the initial position, at which time the top door portion 210 can be completely located in the base 100, or partially extended from the base 100. Figure 2 is a schematic diagram of the structure of the door opening device when one of the door lift members 200 is extended to the maximum stroke; Figure 1 It is a schematic diagram of the structure of the door opening device when one of the top door parts 210 is partially extended.

[0048] The present application utilizes the first transmission part 310 to mesh with the door opening transmission bar 221 or the door closing transmission bar 222 to achieve the resetting of the top-opening door body 800 or the top door member 200; during this process, the transmission wheel 300 rotates in the same direction, that is, the motor of the drive assembly 400 does not need to be reversed, which simplifies the control logic; when the top door member 200 is fully extended, the transmission wheel 300 no longer restricts the movement of the top door member 200. At this time, if the door opening device is powered off, the door can be closed manually; the present application utilizes the first transmission part 310 to mesh with the door opening transmission bar 221 and the door closing transmission bar 222. When the door opening device cannot be automatically reset due to power failure, the door body 800 can be closed manually.

[0049] The door opening transmission bar 221 and the door closing transmission bar 222 are arranged relative to each other. That is to say, when the first transmission part 310 is transformed from the door opening state in which it is engaged with the door opening transmission bar 221 to the door closing state in which it is engaged with the door closing transmission bar 222, the first transmission part 310 is disengaged from the door opening transmission bar 221 and the door closing transmission bar 222, thereby reducing the probability of being unable to close the door due to power failure.

[0050] In some embodiments, at least one of the door opening transmission strip 221 and the door closing transmission strip 222 extends along the extension direction of the top door portion 210 (eg, Figure 1 b direction) is set, and the moving stroke of the door opening transmission bar 221 or the door closing transmission bar 222 can be reduced as much as possible while ensuring that the top door portion 210 extends or retracts a sufficient length.

[0051] See also Figure 2 In some embodiments, the door opening transmission bar 221 and the door closing transmission bar 222 can both be arranged along the extension direction of the top door portion 210 to improve the efficiency of the extension or retraction of the top door portion 210; two guide rails 110 can be arranged on the base, and the door opening transmission bar 221 slides on one of the guide rails 110, and the door closing transmission bar 222 slides on the other guide rail 110, which can guide the movement path of the door opening transmission bar 221 and the door closing transmission bar 222.

[0052] In order to prevent the door member 220 from scratching the door body 800 when the door member 220 is pushed open, a rubber sleeve 250 may be provided at the end of the door member 220 .

[0053] See also Figures 2 to 3In some embodiments, the first transmission part 310 is a wheel body, and the first transmission tooth 311 is convexly provided on the circumferential side of the first transmission part 310. During the rotation of the transmission wheel 300, the first transmission part 310 can engage with the door opening transmission bar 221 or the door closing transmission bar 222 through the first transmission tooth 311; the length of the first transmission tooth 311 is smaller than the circumference of the first transmission part 310, so that when the first transmission tooth 311 is engaged with one of the door opening transmission bar 221 and the door closing transmission bar 222, the second transmission tooth 224 is disengaged from the other of the door opening transmission bar 221 and the door closing transmission bar 222, so as to ensure that the top door member 200 can be smoothly extended or retracted, and avoid the phenomenon that the first transmission tooth 311 is engaged with the door opening transmission bar 221 and the door closing transmission bar 222 at the same time, causing the top door member 200 to be stuck.

[0054] See also Figures 2 to 3 In some embodiments, the length of the first transmission tooth 311 is smaller than the distance between the door opening transmission bar 221 and the door closing transmission bar 222, so that when the first transmission part 310 changes from the door opening state in which it is meshed with the door opening transmission bar 221 to the door closing state in which it is meshed with the door closing transmission bar 222, the first transmission tooth 311 is disengaged from the door opening transmission bar 221 and the door closing transmission bar 222 as much as possible, thereby reducing the probability that the top door member 200 cannot retract due to power failure.

[0055] In some embodiments, the top door component 200 also includes a main body 220, the top door portion 210 is connected to the main body 220, and a door opening transmission bar 221 and a door closing transmission bar 222 are arranged on the main body 220, which can improve the firmness of the connection between the door opening transmission bar 221 and the door closing transmission bar 222, reduce the probability of deformation of the door opening transmission bar 221 or the door closing transmission bar 222, and improve the stability of the movement of the top door component 200.

[0056] See also Figures 2 to 3 In some embodiments, the main body 220 is provided with a movable groove 223, and the first transmission part 310 is arranged in the movable groove 223; the movable groove 223 has a first inner wall 223a and a second inner wall 223b arranged opposite to each other, the door opening transmission strip 221 is arranged on the first inner wall 223a, and the door closing transmission strip 222 is arranged on the second inner wall 223b.

[0057] Since the door opening transmission bar 221 is arranged on the first inner wall 223a, and the door closing transmission bar 222 is arranged on the second inner wall 223b, the first transmission part 310 rotates in the movable groove 223, so that the first transmission part 310 can mesh with the door opening transmission bar 221 or the door closing transmission bar 222 during the rotation process, thereby driving the main body 220 to slide relative to the base 100, and then the door lifting member 200 extends or retracts. During the rotation process of the first transmission part 310 in the movable groove 223, the first transmission tooth 311 faces the first inner wall 223a or the second inner wall 223b. When the first transmission tooth 311 faces the first inner wall 223a, the first transmission tooth 311 meshes with the door opening transmission bar 221, and when the first transmission tooth 311 faces the second inner wall 223b, the first transmission tooth 311 meshes with the door closing transmission bar 222. The transmission wheel 300 is rotatably connected to the base 100, and the first transmission part 310 rotates in the movable groove 223. The transmission wheel 300 can limit the movable stroke of the top door member 200 to prevent the top door member 200 from being separated from the base 100 due to excessive extension or retraction.

[0058] The door opening transmission bar 221 and the door closing transmission bar 222 are both provided with second transmission teeth 224. Through the meshing of the first transmission teeth 311 and the second transmission teeth 224, the transmission wheel 300 can drive the door opening transmission bar 221 or the door closing transmission bar 222 to move, thereby extending or retracting the top door piece 200; the main body 220 can be in a frame shape, and the length direction of the main body 220 is set along the extending direction of the top door piece 200 to ensure that the door opening transmission bar 221 or the door closing transmission bar 222 has sufficient meshing length.

[0059] See also Figure 1 to Figure 2 In some embodiments, the door opening device further includes a first sensor 510, which is disposed on the base 100; when the door lifter 200 is in the reset state, the door lifter 200 triggers the first sensor 510, and the door lifter 200 can be determined to be in the reset state through the first sensor 510. When the first sensor 510 detects that the door lifter 200 is in the reset state, the driving component stops working.

[0060] In some embodiments, the first sensor 510 may be disposed at an end of the base 100 that is away from the opening 120 of the top door member 200. Specifically, the first sensor 510 may be disposed at an end of the base 100 that is opposite to the opening 120. If the first sensor 510 senses a position signal of the top door member 200, it indicates that the top door member 200 is in a reset state.

[0061] See also Figure 1 to Figure 2In some embodiments, the door opening device further includes a second sensor 520, which is disposed on the base 100; when the top door member 200 is extended to the maximum stroke, the top door member 200 triggers the second sensor 520, and the second sensor 520 can be used to determine that the top door member 200 is extended, thereby determining that the top door member 200 pushes the door body 800 open. When the second sensor 520 detects that the top door member 200 is extended to the maximum stroke, the driving component continues to work, so that the top door member 200 retracts and resets. The second sensor 520 can ensure that the top door member 200 is extended to the maximum stroke to ensure that the door body 800 is pushed open.

[0062] The door lift member 200 is disposed in the base 100, and the base 100 is provided with an opening 120. The door lift member 200 extends from the opening 120 to lift the door body 800. The second sensor 520 can be disposed near the opening 120. When the door lift member 200 is in a reset state, the second sensor 520 is located between the opening 120 and the main body 220 and is considered to be disposed near the opening 120. When the main body 220 triggers the second sensor 520, it can be considered that the door lift member 200 moves to the maximum stroke, so that the door body 800 is pushed open.

[0063] In some embodiments, the second sensor 520 may be disposed at the opening 120 , that is, the distance between the second sensor 520 and the opening 120 is very close, so that the distance between the two can be ignored.

[0064] See also Figure 1 to Figure 2 In some embodiments, the door opening device includes a first sensor 510 and a second sensor 520. The first sensor 510 and the second sensor 520 can be used to determine whether the door member 200 is in a fully extended state or a reset state. The first sensor 510 and the second sensor 520 are both micro switches.

[0065] See also Figure 4In some embodiments, the base 100 is provided with an elastic member 600, and the elastic member 600 is located in the retraction direction of the top door portion 210; the elastic member 600 plays a limiting role. When the top door member 200 is fully retracted, the top door member 200 abuts against the elastic member 600, and the elastic member 600 is used to limit the movement of the top door member 200. If the top door member 200 after reset continues to retract and be pressed against the elastic member 600 due to inertia or other external forces, the elastic force of the elastic member 600 can be used to push the top door member 200 to move in the opposite direction to the reset state; through the elastic member 600, the top door member 200 can be limited within a certain range of movement to ensure that the top door member 200 can normally open the door body 800. Generally, the elastic member 600 may be a spring, and a force column 225 may be provided on the side of the main body 220 facing the elastic member 600, wherein the diameter of the force column 225 is smaller than the diameter of the elastic member 600; when the top door member 200 abuts against the elastic member 600, the force column 225 is embedded in the interior of the elastic member 600, which is beneficial for the elastic member 600 to apply force to the top door member 200. Figure 4 It is a schematic diagram of the structure of the door opening device when the elastic member 600 is in a compressed state.

[0066] See also Figures 4 to 5 In some embodiments, the driving assembly 400 includes a driving wheel 410, and at least two top door members 200 and transmission wheels 300 are provided, and the top door members 200 and the transmission wheels 300 correspond to each other; multiple top door members 200 are provided, and multiple door bodies 800 can be opened accordingly; for example, two top door members 200 can be provided, namely a first top door member 230 and a second top door member 240, and correspondingly, two transmission wheels 300 are provided, namely a first transmission wheel 330 and a second transmission wheel 340.

[0067] See also Figures 4 to 5 In some embodiments, the driving wheel 410 includes a first meshing portion 411. The driving wheel 410 rotates in the same direction so that the first meshing portion 411 meshes with one of the transmission wheels 300 and disengages from the other transmission wheel 300. The driving wheel 410 can drive one of the transmission wheels 300 to rotate, thereby causing the corresponding door member 200 to push open the corresponding door body 800.

[0068] When the first meshing portion 411 is meshed with the first transmission wheel 330, the first meshing portion 411 is disengaged from the second transmission wheel 340, and the first transmission wheel 330 rotates under the drive of the first meshing portion 411, so that the first door member 230 pushes open the corresponding door body 800; when the first meshing portion 411 is meshed with the second transmission wheel 340, the first meshing portion 411 is disengaged from the first transmission wheel 330, and the second transmission wheel 340 rotates under the drive of the first meshing portion 411, so that the second door member 240 pushes open the corresponding door body 800. Through the matching relationship between the first meshing portion 411 and the first transmission wheel 330 and the second transmission wheel 340, the driving wheel 410 can push open different door bodies 800 by rotating in the same direction.

[0069] See also Figure 5 In some embodiments, the transmission wheel 300 includes a second transmission part 320, and the first transmission part 310 and the second transmission part 320 are connected and coaxially arranged, so that the first transmission part 310 and the second transmission part 320 can rotate synchronously; the second transmission part 320 is a gear, and the second transmission part 320 can engage with the first meshing tooth 411a, so that the first meshing tooth 411a can drive the transmission wheel 300 to rotate.

[0070] See also Figure 5 In some embodiments, the first meshing portion 411 is a wheel body, and the first meshing teeth 411a are convexly provided on the circumference of the first meshing portion 411, and the length of the first meshing teeth 411a is less than the circumference of the first meshing portion 411. During the rotation of the driving wheel 410, the first meshing portion 411 can mesh with the door opening transmission bar 221 or the door closing transmission bar 222 through the first meshing teeth 411a; the length of the first meshing teeth 411a is less than the circumference of the first meshing portion 411, so that when the first meshing teeth 411a mesh with one of the door opening transmission bar 221 and the door closing transmission bar 222, the second meshing teeth are disengaged from the other of the door opening transmission bar 221 and the door closing transmission bar 222, so as to ensure that the top door member 200 can be smoothly extended or retracted, and avoid the phenomenon that the first meshing teeth 411a mesh with the door opening transmission bar 221 and the door closing transmission bar 222 at the same time, causing the top door member 200 to be stuck.

[0071] In some embodiments, the length of the first meshing portion 411 is equal to the circumference of the second transmission portion 320, so that one engagement of the driving wheel 410 with the transmission wheel 300 can drive the transmission wheel 300 to rotate one circle. One rotation of the transmission wheel 300 can push the top door member 200 to fully extend out of the top-open door body 800 and push the top door member 200 to reset.

[0072] The driving wheel 410 includes a second meshing portion 412, which is connected to the first meshing portion 411 and is coaxially arranged, so that the first meshing portion 411 and the second meshing portion 412 rotate synchronously; the driving assembly 400 includes a motor, which is meshed with the second meshing portion 412, and the second meshing portion 412 is driven to rotate by the motor, thereby driving the first meshing portion 411 to rotate; the driving assembly 400 may include a reducer 413, which is connected to the motor and the second meshing portion 412, and the speed of the driving wheel 410 can be adjusted by the reducer 413. The second meshing portion 412 may be a gear.

[0073] like Figures 6 to 9 As shown, taking the first door lift member 230 as an example; the driving wheel 410 rotates along the c direction, the first meshing tooth 411a faces the first transmission wheel 330, the first meshing tooth 411a meshes with the first transmission wheel 330, and the first transmission wheel 330 rotates along the a direction, so that the first transmission tooth 311 of the first transmission wheel 330 meshes with the second transmission tooth 224 of the door opening transmission strip 221, thereby driving the first door lift member 230 to extend; Figure 6 is a schematic diagram of the structure of the door opening device when the first top door member 230 is partially extended; Figure 7 It is a schematic diagram of the structure of the door opening device when the first door-lifting member 230 is fully extended. After the first door-lifting member 230 pushes open the corresponding door body 800, the first transmission wheel 330 continues to rotate, the first meshing tooth 411a faces the second transmission wheel 340, the first meshing tooth 411a meshes with the second transmission wheel 340, and the second transmission wheel 340 rotates along the direction a, so that the first transmission tooth 311 of the second transmission wheel 340 meshes with the second transmission tooth 224 of the door closing transmission bar 222, thereby driving the second door-lifting member 240 to retract; Figure 8 It is a schematic diagram of the structure of the door opening device when the second top door member 240 is partially retracted; Fig. 9 It is a schematic diagram of the structure of the door opening device when the second top door member 240 is fully retracted.

[0074] In some embodiments, the door opening device further includes an angle sensor, which is mounted on the base 100. The angle sensor is used to detect the angle of the driving wheel 410. The angle information of the driving wheel 410 can be detected by the angle sensor to facilitate the resetting of the driving wheel 410. For example, the angle sensor can be a Hall sensor. A magnet is mounted on the driving wheel 410, and the magnet can rotate with the driving wheel 410. The Hall sensor detects the change in the magnetic field, and then detects the rotation angle of the driving wheel 410. If the door opening device is powered off during use, the driving wheel 410 deviates from the reset angle, and after the power is turned on again, the driving wheel 410 needs to be reset. The position of the driving wheel 410 can be determined by the angle sensor to control the driving wheel 410 to rotate to the reset angle, thereby completing the resetting of the drive assembly.

[0075] In the second aspect of the present application, an electrical device is provided, comprising a housing 700, a door 800 and a door opening device of any embodiment of the first aspect, wherein the door 800 is rotatably connected to the housing 700; the door opening device is installed on the housing, and the door opening device is used to drive the door 800 to rotate relative to the housing 700 so that the door 800 opens.

[0076] It can be understood that if the door opening device has the beneficial effects of the above-mentioned embodiments, then the electrical equipment will correspondingly have the beneficial effects of the above-mentioned embodiments. Its specific implementation method can refer to the above-mentioned embodiments, and this application will not go into details.

[0077] Among them, the electrical equipment may be a refrigerator, a freezer, a dishwasher, a disinfection cabinet, etc.

[0078] In the third aspect of the present application, a resetting method for a door opening device is provided. Based on the door opening device of any embodiment of the first aspect above, the driving assembly 400 includes a driving wheel 410, and at least two top door members 200 and transmission wheels 300 are provided, and the top door members 200 and the transmission wheels 300 correspond to each other; the driving wheel 410 includes a first meshing portion 411, and the driving wheel 410 rotates in the same direction so that the first meshing portion 411 meshes with one of the transmission wheels 300 and disengages from the other transmission wheel 300; through the driving wheel 410, one of the transmission wheels 300 can be driven to rotate, so that the corresponding top door member 200 can push open the corresponding door body 800.

[0079] Two door-lifting members 200 may be provided, namely, a first door-lifting member 230 and a second door-lifting member 240. Correspondingly, two transmission wheels 300 may be provided, namely, a first transmission wheel 330 and a second transmission wheel 340. When the first meshing portion 411 is meshed with the first transmission wheel 330, the first meshing portion 411 is disengaged from the second transmission wheel 340, and the first transmission wheel 330 rotates under the drive of the first meshing portion 411, so that the first door-lifting member 230 pushes open the corresponding door body 800; when the first meshing portion 411 is meshed with the second transmission wheel 340, the first meshing portion 411 is disengaged from the first transmission wheel 330, and the second transmission wheel 340 rotates under the drive of the first meshing portion 411, so that the second door-lifting member 240 pushes open the corresponding door body 800. Through the matching relationship between the first meshing portion 411 and the first transmission wheel 330 and the second transmission wheel 340, the driving wheel 410 can push open different door bodies 800 by rotating in the same direction. Fig.10 is a schematic structural diagram of the door opening device when the driving wheel 410 is at the first reset angle; Fig. 9 It is a schematic diagram of the structure of the door opening device when the driving wheel 410 is at the second reset angle.

[0080] When the driving wheel 410 is at the reset angle, the first meshing portion 411 is arranged adjacent to the second transmission portion 320, so that the driving wheel 410 can drive the transmission wheel 300 to rotate by rotating, thereby reducing the idling time of the driving wheel 410 and increasing the corresponding speed of the door opening device; if the door opening device loses power during use, the driving wheel 410 deviates from the reset angle, and the driving wheel 410 needs to be reset after power is restored. The reset position includes a first reset angle and a second reset angle, and the difference between the first reset angle and the second reset angle is 180 degrees. The angle information of the driving wheel 410 is set to be greater than or equal to 0 degrees and less than or equal to 180 degrees, the first reset angle is set to 0 degrees, and the second reset angle is set to 180 degrees.

[0081] The method comprises:

[0082] Obtaining angle information of the driving wheel 410;

[0083] If the difference between the angle information and the first reset angle is less than or equal to 90 degrees, the driving wheel 410 is controlled to rotate to the first reset angle;

[0084] If the difference between the angle information and the second reset angle is less than 90 degrees, the driving wheel 410 is controlled to rotate to the second reset angle;

[0085] By calculating the difference between the angle information and the first reset angle and the difference between the angle information and the second reset angle, the driving wheel 410 is controlled to rotate to the correct reset angle to reduce the rotation angle of the driving wheel 410 during the reset process, thereby reducing the reset time.

[0086] In the present application, unless otherwise clearly specified 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.

[0087] 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" and "counterclockwise" 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.

[0088] It should be noted that all directional indications in the embodiments of the present application 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.

[0089] In this application, 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 this application can be understood according to specific circumstances.

[0090] In addition, the descriptions of "first", "second", etc. in this application are only 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" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0091] 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.

[0092] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. 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.

[0093] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A door opening device, characterized in that: include: Pedestal; A door top member is mounted on the base; the door top member comprises a door top portion, a door opening transmission bar and a door closing transmission bar which are arranged opposite to each other, and the door top portion is connected to the door opening transmission bar and the door closing transmission bar; A transmission wheel, rotatably connected to the base; the transmission wheel includes a first transmission part; A driving assembly, used for driving the transmission wheel to rotate; Wherein, when the driving assembly drives the transmission wheel to rotate in the same direction, the first transmission part engages or disengages with the door opening transmission bar, or engages or disengages with the door closing transmission bar; wherein, when the first transmission part engages with the door opening transmission bar, the door push-up part extends to push open the door body; when the transmission wheel engages with the door closing transmission bar, the door push-up part retracts.

2. The door opening device according to claim 1, characterized in that: The door opening transmission bar and / or the door closing transmission bar are arranged along the extending direction of the top door part.

3. The door opening device according to claim 1, characterized in that: The first transmission part is a wheel body, and a first transmission tooth is convexly provided on the circumference of the first transmission part, and the length of the first transmission tooth is smaller than the circumference of the first transmission part.

4. The door opening device according to claim 3, characterized in that: The length of the first transmission tooth is smaller than the distance between the door opening transmission bar and the door closing transmission bar.

5. The door opening device according to any one of claims 1 to 4, characterized in that: The door top member further comprises a main body portion, the door top portion is connected to the main body portion, and the door opening transmission bar and the door closing transmission bar are arranged on the main body portion.

6. The door opening device according to claim 5, characterized in that: The main body is provided with a movable groove, and the first transmission part is arranged in the movable groove; the movable groove has a first inner wall and a second inner wall arranged opposite to each other, the door opening transmission bar is arranged on the first inner wall, and the door closing transmission bar is arranged on the second inner wall.

7. The door opening device according to any one of claims 1 to 4, characterized in that: The base is provided with an elastic member; when the top door member is in a reset state, the top door member abuts against the elastic member.

8. The door opening device according to any one of claims 1 to 4, characterized in that: The driving assembly includes a driving wheel, and at least two of the top door members and the transmission wheels are provided, and the top door members and the transmission wheels correspond to each other; the driving wheel includes a first meshing portion, and the driving wheels rotate in the same direction so that the first meshing portion meshes with one of the transmission wheels and disengages from the other transmission wheel.

9. The door opening device according to claim 8, characterized in that: The first meshing portion is a wheel body, and first meshing teeth are convexly arranged on the circumference of the first meshing portion, and the length of the first meshing teeth is smaller than the circumference of the first meshing portion.

10. The door opening device according to any one of claims 1 to 4, characterized in that: The door opening device also includes an angle sensor, which is installed on the base and is used to detect the angle of the driving wheel.

11. An electrical device, characterized in that: It comprises a box body, a door body and a door opening device as described in any one of claims 1 to 11, wherein the door body is rotatably connected to the box body; the door opening device is installed on the box body and is used to drive the door body to rotate relative to the box body so that the door body opens.

12. A method for resetting a door opening device, characterized in that: Based on the door opening device according to any one of claims 1 to 8, the driving assembly includes a driving wheel, the top door member and the transmission wheel are provided with at least two, and the top door member and the transmission wheel correspond to each other; the driving wheel includes a first meshing portion, and the driving wheel rotates in the same direction so that the first meshing portion meshes with one of the transmission wheels and disengages from the other transmission wheel; the method includes: Obtaining angle information of the driving wheel; If the difference between the angle information and the first reset angle is less than or equal to 90 degrees, controlling the driving wheel to rotate to the first reset angle; If the difference between the angle information and the second reset angle is less than 90 degrees, controlling the driving wheel to rotate to the second reset angle; The difference between the first reset angle and the second reset angle is 180 degrees.

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