Automatic door opening device of dishwasher and dishwasher

Abstract

The present invention discloses an automatic door opening device of a dishwasher and a dishwasher, wherein the automatic door opening device comprises: a seat body; a pusher, which is installed on the seat body and has an extended state and a retracted state; a driving assembly, which is suitable for driving the pusher to move from the retracted state to the extended state when powered on, so as to drive the door of the dishwasher to open; an elastic member, which cooperates with the pusher, and when the door is in the open state and the driving assembly is in the power-off state, the elastic member maintains the extended state of the pusher. The automatic door opening device according to the embodiment of the present invention is conducive to improving the drying effect of the dishwasher and reducing the temperature in the rinsing stage, and the driving assembly does not need to be continuously powered on, which reduces energy consumption and increases the life of the driving assembly. At the same time, there is no need to set structures such as door body balance hinges, and the dishwasher has a simple structure and low production cost.

Description

Technical Field

[0001] The present invention relates to the technical field of dishwashers, and more particularly to an automatic door opening device of a dishwasher and the dishwasher. Background Art

[0002] At present, with the gradual expansion of the dishwasher market and the improvement of consumer awareness, basic performance parameters such as washing, drying, energy consumption, and water consumption are attracting more and more attention from consumers. In related technologies, dishwashers use high-temperature heating to achieve washing, and use the residual heat from the final rinse to dry. The higher the temperature, the better the drying effect, but it also brings about safety hazards such as high-temperature water spraying when the door is opened during operation, as well as problems of increased energy consumption. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an automatic door opening device for a dishwasher, which improves the drying efficiency of the dishwasher and helps to reduce energy consumption.

[0004] Another object of the present invention is to provide a dishwasher having the automatic door opening device.

[0005] According to an embodiment of the present invention, the automatic door opening device of the dishwasher includes: a base; a pushing member, which is installed on the base and has an extended state and a retracted state; a driving component, which is suitable for driving the pushing member from the retracted state to the extended state when powered on, so as to drive the door of the dishwasher to open; an elastic member, which cooperates with the pushing member and maintains the extended state of the pushing member when the door is in the open state and the driving component is in the power-off state.

[0006] According to the automatic door opening device of the dishwasher according to the embodiment of the present invention, the driving component drives the pushing member to move to realize the automatic door opening function, and maintains the pushing member in an extended state through the elastic member, thereby improving the drying effect and drying efficiency of the dishwasher, which is beneficial to reducing the temperature in the rinsing stage, and the driving component does not need to be continuously powered on, which effectively reduces energy consumption and increases the service life of the driving component. At the same time, there is no need to set structures such as door body balance hinges, which simplifies the structure of the dishwasher and reduces production costs.

[0007] In addition, the automatic door opening device of the dishwasher according to the above embodiment of the present invention may also have the following additional technical features:

[0008] According to some embodiments of the present invention, the driving assembly includes: a driving motor; a transmission member, which is rotatably mounted on the base body, and the driving motor drives the transmission member to rotate in a first direction when powered on, so that one end of the transmission member abuts against the pushing member to drive the pushing member to move to the extended state.

[0009] According to some embodiments of the present invention, the driving motor has a piston rod, and the piston rod is suitable for cooperating with the transmission member to drive the transmission member to rotate.

[0010] According to some embodiments of the present invention, the piston rod extends when the drive motor is powered on and retracts when the drive motor is powered off, and when the piston rod is extended, it abuts against the other end of the transmission member to drive the transmission member to rotate.

[0011] According to some embodiments of the present invention, a mating protrusion is provided on the outer peripheral surface of the pushing member, and the elastic member is a coil spring sleeved on the pushing member, one end of the coil spring abuts against the mating protrusion and the other end is connected to the driving assembly or the seat body.

[0012] According to some embodiments of the present invention, one end of the elastic member is connected to the pushing member and the other end is connected to one end of the transmission member, and the elastic member drives the transmission member to rotate in a second direction opposite to the first direction when the drive motor is powered off.

[0013] According to some embodiments of the present invention, the pushing member and the driving motor are arranged on the same side of the transmission member.

[0014] According to some embodiments of the present invention, the drive assembly includes a drive motor having a piston rod, and when the drive motor is energized, the piston rod extends and abuts against the pusher to drive the pusher to move to the extended state.

[0015] According to some embodiments of the present invention, the drive assembly is disengaged from the pushing member when in a power-off state.

[0016] According to some embodiments of the present invention, the seat body has a guide channel, and the pushing member is movably mounted on the guide channel.

[0017] A dishwasher according to an embodiment of the present invention comprises a machine body, a door body and an automatic door opening device of the dishwasher according to an embodiment of the present invention, wherein the automatic door opening device is installed on the machine body, the push member is in the extended state to open the door body, and the push member is in the retracted state to close the door body.

[0018] According to some embodiments of the present invention, one end of the door body is rotatably connected to the machine body, and the pusher is suitable for abutting against the other end of the door body in the extended state, so that the other end of the door body is spaced a preset distance from the machine body.

[0019] According to some embodiments of the present invention, the preset distance is 80 mm-120 mm.

[0020] According to some embodiments of the present invention, the dishwasher further comprises: a door lock assembly, which locks the door body and the machine body when the pusher is in the retracted state.

[0021] According to some embodiments of the present invention, the door lock assembly includes a magnetic member and a magnetically attractable member, one of the magnetic member and the magnetically attractable member is arranged on the door body and the other is arranged on the machine body; or, the door lock assembly is a mechanical lock.

[0022] According to some embodiments of the present invention, when the pushing member is in the retracted state, the elastic force of the elastic member is smaller than the locking force of the door lock assembly.

[0023] According to some embodiments of the present invention, the door lock assembly and the automatic door opening device are integrated.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 is a schematic structural diagram of a dishwasher according to an embodiment of the present invention, wherein the access opening is completely open;

[0027] Figure 2 is a schematic structural diagram of a dishwasher according to an embodiment of the present invention, wherein the door is closed;

[0028] Figure 3 is a schematic structural diagram of a dishwasher according to an embodiment of the present invention, wherein the door is opened;

[0029] Figure 4 is a left side view of a dishwasher according to an embodiment of the present invention, wherein the door is opened;

[0030] Figure 5 is a schematic structural diagram of an automatic door opening device according to an embodiment of the present invention, wherein the pusher is in an extended state and the drive assembly is powered off;

[0031] Figure 6 is a schematic structural diagram of an automatic door opening device according to an embodiment of the present invention, wherein the push member is in an extended state and the drive assembly is energized.

[0032] Reference numerals:

[0033] Automatic door opening device 100; dishwasher 200; machine body 210; door body 220; washing chamber 230; access opening 240; door lock assembly 250; through hole 260;

[0034] Base body 10; guide channel 11; mounting shaft 12;

[0035] Pushing member 20; matching protrusion 21;

[0036] Driving assembly 30; driving motor 31; piston rod 311; transmission member 32;

[0037] Elastic member 40. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 limiting the present invention.

[0040] In the description of the present invention, "first feature" and "second feature" may include one or more such features, "plurality" means two or more, a first feature "above" or "below" the second feature may include the first and second features being directly in contact, or may include the first and second features not being in direct contact but being in contact through another feature between them, and a first feature "above", "above" and "above" the second feature may include the first feature being directly above or diagonally above the second feature, or may simply mean that the first feature is horizontally higher than the second feature.

[0041] Hereinafter, a dishwasher 200 and an automatic door opening device 100 of the dishwasher 200 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0042] Reference Figure 1-Figure 4 As shown, the dishwasher 200 according to the embodiment of the present invention may include a body 210, a door body 220 and an automatic door opening device 100 according to the embodiment of the present invention, and the door body 220 can be opened and closed. For example, the body 210 may have a washing chamber 230 and a take-in and put-out port 240 connected to the washing chamber 230. When the door body 220 is in an open state, the take-in and put-out port 240 is connected to the outside, and when the door body 220 is in a closed state, the take-in and put-out port 240 is closed. For example, when the dishwasher 200 is washing dishes, the door body 220 may be opened and closed. Figure 2 When the user takes or places tableware, the door body 220 can be opened as shown in FIG. Figure 1 The angle shown is 90° with the plane where the access opening 240 is located, so that the access opening 240 is completely open.

[0043] In addition, the door body 220 can also be Figure 3 and Figure 4 As shown in the open state, the access opening 240 is opened at a certain angle or a preset distance, so that the washing chamber 230 can have a certain degree of air convection with the outside through the access opening 240. Therefore, when the dishwasher 200 is in the drying stage, the automatic door opening device 100 pushes the door body 220 to open, so that the high-temperature moisture in the washing chamber 230 can be quickly discharged to the outside through the access opening 240, so as to improve the drying efficiency of the tableware, thereby reducing the temperature in the rinsing stage, so as to achieve the purpose of reducing the energy consumption of the dishwasher 200, and avoid the safety hazard of high-temperature water spraying when the door is opened during operation, and at the same time achieve a better drying effect.

[0044] like Figure 5 and Figure 6 As shown, the automatic door opening device 100 of the dishwasher 200 according to the embodiment of the present invention may include: a base 10 , a pusher 20 , a driving assembly 30 and an elastic member 40 .

[0045] Specifically, the seat 10 can be installed on the machine body 210 to install the automatic door opening device 100 on the machine body 210. The pusher 20 is installed on the seat 10, and the pusher 20 has an extended state and a retracted state. The pusher 20 is larger in the extended state than in the retracted state. The pusher 20 is larger in the extended state than in the retracted state. Figure 1As shown, the automatic door opening device 100 is arranged at the front end of the top of the body 210, the body 210 is provided with a guard, the base body 10 is located on the rear side of the guard, the guard is provided with a through hole 260, the push member 20 passes through the through hole 260 in the extended state to resist the door body 220, and the push member 20 does not extend out of the through hole 260 in the retracted state.

[0046] When the push member 20 is in the extended state, it can abut against the door body 220 so that the door body 220 Figure 3 and Figure 4 The door 220 is opened as shown, so that the washing chamber 230 can communicate with the outside through the access opening 240 and conduct air convection. Figure 2 The access opening 240 is shown closed.

[0047] like Figure 6 As shown, the driving assembly 30 can drive the push member 20 to move from the retracted state to the extended state when powered on, so that the push member 20 pushes the door body 220, so that the door body 220 moves from the retracted state to the extended state. Figure 2 Move the position shown to Figure 3 The position shown in the figure drives the door body 220 to open, and the dishwasher 200 has an automatic door opening function, which does not require manual operation by the user and is more convenient to use. Of course, the user can also manually open the door according to actual needs.

[0048] In some embodiments, Figure 1-Figure 4 As shown, one end of the door body 220 (eg Figure 4 The lower end shown in FIG. 2 is rotatably connected to the body 210, and the pusher 20 can be extended as shown in FIG. Figure 4 As shown, the other end of the door body 220 (eg Figure 4 The upper end of the door body 220 is abutted against the machine body 210 so that the other end of the door body 220 is spaced apart from the machine body 210 by a preset distance L, thereby making the door body 220 and the machine body 210 form a certain angle.

[0049] It should be noted that the matching structure between the door body 220 and the body 210 includes but is not limited to a rotatable connection structure. For example, in other embodiments, the door body 220 can be translated relative to the body 210 as a whole to achieve opening and closing, and the pusher 20 can push the door body 220 to translate relative to the body 210 in the extended state, so that the door body 220 as a whole is parallel to the plane where the access port 240 is located and is separated by a preset distance L. Here, the preset distance L can be understood as the dimension of the pusher 20 exceeding the plane where the access port 240 is located when the pusher 20 is in the extended state.

[0050] According to some embodiments of the present invention, the preset distance L may be 80 mm-120 mm. If the preset distance is too small, the convection effect between the washing chamber 230 and the outside air is poor, which is not conducive to improving the drying efficiency. If the preset distance is too large, it is not conducive to the door body 220 to maintain balance. Within the above distance range, the drying efficiency is high, the drying effect is good, the energy consumption can be significantly reduced, and it is conducive to the door body 220 to maintain balance at a position separated from the machine body 210 by a preset distance. There is no need to set a balancing hinge or other structures to control the door body 220 to maintain balance, which is conducive to simplifying the structure and reducing costs. In some specific embodiments, the preset distance may be 80 mm, 90 mm, 100 mm, 110 mm, 120 mm, etc.

[0051] In some embodiments, when the door body 220 is closed, the door body 220 may be parallel to the plane where the access opening 240 is located, so as to facilitate sealing the access opening 240 .

[0052] In addition, after the driving assembly 30 drives the pusher 20 to move so that the door body 220 is opened, the door body 220 usually needs to remain in the open state for a period of time. For example, in the drying stage, the door body 220 needs to be kept in the open state for a period of time. Figure 3 and Figure 4 position as shown to allow the dishes to dry thoroughly.

[0053] Therefore, the automatic door opening device 100 according to the embodiment of the present invention also includes an elastic member 40, which cooperates with the push member 20. When the door body 220 is in an open state and the drive component 30 is in a power-off state, the elastic member 40 can maintain the extended state of the push member 20, so that the push member 20 cooperates with the door body 220 to keep the door body 220 in an open position without changing position when the drive component 30 is powered off.

[0054] By providing the elastic member 40, the driving assembly 30 does not need to be continuously powered, which is beneficial to reducing energy consumption, and there is no need to provide complex structures such as door body balance hinges. The elastic member 40 has a simple structure and low cost, which is beneficial to simplifying the structure of the dishwasher 200 and reducing production costs. When the door needs to be closed, the door body 220 can directly overcome the elastic force of the elastic member 40 and close the access opening 240, so as to achieve rapid door closing, and the operation is more convenient and quick.

[0055] According to some embodiments of the present invention, Figure 1-Figure 3 As shown, the dishwasher 200 further includes a door lock assembly 250, and when the pusher 20 is in the retracted state, the door lock assembly 250 can lock the door body 220 and the machine body 210. For example, during the door closing process, the door body 220 can abut against the pusher 20 and push the pusher 20, so that the pusher 20 moves from the extended state to the retracted state.

[0056] When the pusher 20 is in the retracted state, the elastic force of the elastic member 40 is less than the locking force of the door lock assembly 250. Therefore, when the drive assembly 30 is in the power-off state and the door body 220 is in the closed state, the door lock assembly 250 will not be unlocked under the elastic force of the elastic member 40, thereby preventing the dishwasher 200 from opening the door body 220 during the dishwashing process and causing liquid leakage. When the drive assembly 30 is in the power-on state, the drive assembly 30 can push the pusher 20 so that the pusher 20 overcomes the locking force of the door lock assembly 250, opens the door lock assembly 250, and allows the door body 220 to open.

[0057] The present invention does not impose any particular limitation on the specific structure of the door lock assembly 250 .

[0058] For example, in some embodiments, the door lock assembly 250 may be a mechanical lock. Specifically, the mechanical lock includes a lock catch provided on the door body 220 and a buckle part provided on the body 210, and the lock catch can be locked and unlocked with the buckle part.

[0059] For another example, in some embodiments, the door lock assembly 250 may include a magnetic member (such as a magnet) and a magnetically attractive member (such as an iron sheet), one of the magnetic member and the magnetically attractive member is disposed on the door body 220 and the other is disposed on the machine body 210, and the magnetic member can be magnetically attracted to the magnetically attractive member to achieve the locking of the door lock assembly 250.

[0060] In some embodiments of the present invention, the door lock assembly 250 and the automatic door opening device 100 can be integrated to make the structure more compact and easier to assemble, and it is easier for the pusher 20 to push the door body 220 to overcome the locking force of the door lock assembly 250.

[0061] According to the automatic door opening device 100 of the dishwasher 200 of the embodiment of the present invention, the driving component 30 drives the push member 20 to move to realize the automatic door opening function, and maintains the push member 20 in an extended state through the elastic member 40, thereby improving the drying effect and drying efficiency of the dishwasher 200, which is beneficial to reducing the temperature in the rinsing stage, and the driving component 30 does not need to be continuously powered on, which effectively reduces energy consumption and increases the service life of the driving component 30. At the same time, there is no need to set structures such as door body balance hinges, which simplifies the structure of the dishwasher 200 and reduces production costs.

[0062] Since the automatic door opening device 100 of the dishwasher 200 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, in the dishwasher 200 according to the embodiment of the present invention, the driving component 30 drives the push member 20 to move to realize the automatic door opening function, and maintains the extended state of the push member 20 through the elastic member 40, thereby improving the drying effect and drying efficiency of the dishwasher 200, which is beneficial to reducing the temperature in the rinsing stage, and the driving component 30 does not need to be continuously powered on, which effectively reduces energy consumption and increases the service life of the driving component 30. At the same time, there is no need to set structures such as door body balance hinges, which simplifies the structure of the dishwasher 200 and reduces production costs.

[0063] The automatic door opening device 100 of the dishwasher 200 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0064] In some embodiments of the present invention, Figure 5 and Figure 6 As shown, the seat body 10 has a guide channel 11, and the push member 20 is movably installed in the guide channel 11 to move between a retracted state and an extended state under the guidance of the guide channel 11, thereby preventing the push member 20 from being offset or misplaced and affecting the door opening effect, and the push member 20 moves more smoothly.

[0065] According to some embodiments of the present invention, the drive assembly 30 includes a drive motor 31, and the drive motor 31 has a piston rod 311, and the piston rod 311 can be extended. When the drive motor 31 is powered, the piston rod 311 extends and contacts the pusher 20 to drive the pusher 20 to move to the extended state. The drive assembly 30 has a small number of parts and a simple structure.

[0066] According to some embodiments of the present invention, Figure 5 and Figure 6 As shown, the driving assembly 30 includes: a driving motor 31 and a transmission member 32. The transmission member 32 is rotatably mounted on the seat body 10. The driving motor 31 can drive the transmission member 32 to rotate in a first direction (for example, counterclockwise) when powered on, so that one end (for example, Figure 5 The left end of the push member 20 shown in FIG. 1 is against the push member 20 to drive the push member 20 to move to the extended state. The drive motor 31 drives the push member 20 to move through the transmission member 32, so that the setting positions of the drive motor 31 and the transmission member 32 are more flexible, and the force arms of the drive motor 31 and the push member 20 respectively cooperating with the transmission member 32 can be adjusted, which is conducive to making the structure more compact.

[0067] For example, in Figure 5 In the example shown, the seat body 10 is provided with a mounting shaft 12, and the transmission member 32 is rotatably matched with the mounting shaft 12. One end of the transmission member 32 is suitable for matching with the push member 20, and the driving motor 31 is connected with the other end of the transmission member 32 (for example Figure 5The distance between one end of the transmission member 32 and the rotation axis is smaller than the distance between the other end and the rotation axis, so that the driving motor 31 only needs to drive the transmission member 32 to rotate a small angle to move the pusher 20 to a required distance and realize automatic door opening. The size of the transmission member 32 is smaller, and the driving motor 31, the transmission member 32 and the pusher 20 are more compact.

[0068] In the embodiment of the present invention, the matching structure between the driving motor 31 and the transmission member 32 can be flexibly set according to actual conditions.

[0069] For example, in some embodiments, the output end of the driving motor 31 can rotate, and the output end of the driving motor 31 is in transmission cooperation with the transmission member 32 to drive the transmission member 32 to rotate.

[0070] For example, in some embodiments, Figure 5 and Figure 6 As shown, the driving motor 31 has a piston rod 311, and the piston rod 311 can be extended and retracted so that the piston rod 311 can cooperate with the transmission member 32 to drive the transmission member 32 to rotate. Therefore, the driving motor 31 can be arranged on one side of the transmission member 32 to reduce the height of the automatic door opening device 100, which is conducive to meeting the installation requirements of a smaller installation space on the body 210.

[0071] According to some embodiments of the present invention, Figure 5 and Figure 6 As shown, the piston rod 311 extends when the drive motor 31 is powered on and retracts when the drive motor 31 is powered off. When the piston rod 311 is extended, it abuts against the other end of the transmission member 32 to drive the transmission member 32 to rotate. The position of the piston rod 311 and the position of the transmission member 32 can be controlled by turning the drive motor 31 on and off, which makes the control simpler. In addition, when the piston rod 311 is extended, the transmission member 32 is driven to rotate, so that the piston rod 311 and the transmission member 32 can abut against each other without setting other connection structures, and the structure is simpler.

[0072] In some embodiments, the drive motor 31 may be an electric motor.

[0073] According to some embodiments of the present invention, Figure 5 and Figure 6 As shown, the outer circumferential surface of the pusher 20 is provided with a mating protrusion 21, and the elastic member 40 is a coil spring sleeved on the pusher 20, one end of the coil spring abuts against the mating protrusion 21, and the other end of the coil spring is connected to the driving assembly 30 or the seat body 10. The pusher 20 can limit the coil spring and prevent the coil spring from being out of engagement with the pusher 20.

[0074] According to some embodiments of the present invention, Figure 5 and Figure 6As shown, one end of the elastic member 40 is connected to the pushing member 20, and the other end of the elastic member 40 is connected to one end of the transmission member 32. When the drive motor 31 is powered off, the elastic member 40 can drive the transmission member 32 to rotate in a second direction (for example, clockwise) opposite to the first direction.

[0075] Since the transmission member 32 is connected to the elastic member 40, the transmission member 32 can squeeze the elastic member 40 during the rotation in the first direction, so that the deformation of the elastic member 40 increases, and the driving force of the elastic member 40 on the push member 20 increases. The push member 20 can push the door body 220 under the joint action of the elastic member 40 and the transmission member 32, so that the door can be opened more quickly. After the door body 220 is opened, the deformation of the elastic member 40 decreases during the rotation of the transmission member 32 in the second direction, so that the driving force of the elastic member 40 on the push member 20 is reduced and the door body 220 can be kept balanced. Therefore, when the user manually closes the door, the resistance is smaller and the door can be closed quickly.

[0076] In some embodiments of the present invention, Figure 5 and Figure 6 As shown, the pusher 20 and the drive motor 31 are arranged on the same side of the transmission member 32, for example Figure 5 As shown, it is arranged on the front side of the transmission member 32, which can effectively shorten the front-to-back dimensions of the automatic door opening device 100, making the structure compact and occupying a small space.

[0077] According to some embodiments of the present invention, the drive assembly 30 is in a power-off state, and the drive assembly 30 is disengaged from the pusher 20. Figure 5 As shown, one end of the transmission member 32 is disengaged from the push member 20. Therefore, when the door body 220 is in the open state, the push member 20 is only driven by the elastic member 40. When the user closes the door body 220, he only needs to overcome the elastic force of the elastic member 40. There is no resistance when closing the door manually, and the operation is easier. The door can be closed quickly, and the seamless switching of opening and closing the door can be realized.

[0078] A dishwasher 200 and an automatic door opening device 100 according to a specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the following description is only exemplary and should not be construed as limiting the invention.

[0079] like Figure 1-Figure 4 As shown, the dishwasher 200 includes a door body 220, a body 210, an automatic door opening device 100, a door lock assembly 250 and a control assembly. The door body 220 is connected to the body 210 through a rotating shaft, and the door body 220 can rotate around the rotating shaft within a range of 0°-90°. The automatic door opening device 100 and the door lock assembly 250 are installed on the top of the body 210. The door lock assembly 250 includes a magnet and an iron sheet, and the door body 220 and the body 210 are respectively installed with a magnet and an iron sheet.

[0080] like Figure 5 As shown, the automatic door opening device 100 includes a base 10, a driving motor 31, a transmission member 32, a push member 20 and an elastic member 40. The driving motor 31 is connected to the control component signal, and the control component controls the driving motor 31 to be powered on and off according to a preset program, for example, the driving motor 31 is powered on when entering the drying stage, and the driving motor 31 is powered off after the door body 220 is opened. A piston rod 311 is provided on the driving motor 31, the transmission member 32 is a sliding rod rotatable around the mounting shaft 12 on the base 10, and the elastic member 40 is a pre-compressed spring. The push member 20 is inserted into the guide channel 11 of the base 10 and can be moved and retracted along the guide channel 11. When the driving motor 31 is not powered on and is not working, the piston rod 311 is not extended at the initial position, the push member 20 is extended to the front end under the action of the elastic member 40, and the transmission member 32 is in contact with the piston rod 311 under the action of the elastic member 40.

[0081] like Figure 3 , Figure 4 and Figure 6 As shown, when the door body 220 is open and the drive motor 31 is not powered, the pusher 20 extends to the front end under the elastic force of the elastic member 40. When the door needs to be closed, the pusher 20 moves backward under the push of the door body 220, and the elastic member 40 is compressed, so that the magnet and the iron sheet are attracted and locked. Figure 2 As shown, when the door body 220 is closed and the driving motor 31 is not powered, the door body 220 can be kept in the closed state because the locking force is greater than the elastic force of the elastic member 40 .

[0082] like Figure 3 , Figure 4 and 6 As shown, after the door body 220 is closed and the drive motor 31 is powered, the piston rod 311 extends, and the transmission member 32 rotates counterclockwise around the mounting shaft 12 under the push of the piston rod 311 until the piston rod 311 reaches the maximum stroke, at which time one end of the transmission member 32 contacts the end surface of the push member 20 and pushes the push member 20 forward, and the push member 20 overcomes the locking force to open the door body 220. When the push member 20 moves to the limit position, the door body 220 is opened at a fixed angle.

[0083] like Figure 3 , Figure 4 and Figure 5 As shown, after the door body 220 is opened, the drive motor 31 is powered off, the piston rod 311 retracts and resets in a short time, the transmission member 32 rotates clockwise under the action of the elastic member 40, and the push member 20 maintains an extended state under the action of the elastic member 40. The door body 220 maintains an open state unchanged under the action of the push member 20, that is, the door body 220 keeps balanced, thereby achieving continuous and effective door opening, while avoiding continuous power supply to the drive motor 31, thereby ensuring the life of the drive motor 31.

[0084] Among them, the length of the elastic member 40 and the pre-compression preload can be designed according to the minimum force required to keep the door body 220 balanced. After the door is opened automatically, there is no resistance when closing the door manually, and seamless switching between opening and closing the door can be achieved.

[0085] Other structures and operations of the dishwasher 200 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0086] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0087] In the description of this specification, the description with reference to the terms "embodiment", "specific embodiment", "example", 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 invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0088] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An automatic door opening device for a dishwasher, characterized in that: include: seat body; A pusher, the pusher is mounted on the seat and has an extended state and a retracted state; a driving assembly, wherein the driving assembly is adapted to drive the pusher to move from the retracted state to the extended state in a powered state, so as to drive the door of the dishwasher to open; an elastic member, the elastic member cooperates with the pushing member, and when the door body is in an open state and the driving assembly is in a power-off state, the elastic member maintains the extended state of the pushing member; The drive assembly comprises: Drive motor; A transmission member, the transmission member is rotatably mounted on the seat body, and the driving motor drives the transmission member to rotate along a first direction when powered on, so that one end of the transmission member abuts against the pushing member, so as to drive the pushing member to move to the extended state; One end of the elastic member is connected to the pushing member and the other end is connected to one end of the transmission member, and the elastic member drives the transmission member to rotate in a second direction opposite to the first direction when the driving motor is powered off; The pushing member is larger in the extended state than in the retracted state.

2. The automatic door opening device of the dishwasher according to claim 1, characterized in that: The driving motor has a piston rod, and the piston rod is suitable for cooperating with the transmission member to drive the transmission member to rotate.

3. The automatic door opening device of the dishwasher according to claim 2, characterized in that: The piston rod extends when the drive motor is powered on and retracts when the drive motor is powered off. When the piston rod extends, it abuts against the other end of the transmission member to drive the transmission member to rotate.

4. The automatic door opening device of a dishwasher according to claim 1, characterized in that: The outer peripheral surface of the pushing member is provided with a matching convex portion, and the elastic member is a coil spring sleeved on the pushing member, one end of the coil spring abuts against the matching convex portion and the other end is connected to the driving assembly or the seat body.

5. The automatic door opening device of a dishwasher according to claim 1, characterized in that: The pushing member and the driving motor are arranged on the same side of the transmission member.

6. The automatic door opening device of a dishwasher according to claim 1, characterized in that: The driving assembly comprises a driving motor having a piston rod. When the driving motor is powered on, the piston rod extends and abuts against the pushing member to drive the pushing member to move to the extended state.

7. The automatic door opening device of a dishwasher according to any one of claims 1 to 6, characterized in that: The driving assembly is disengaged from the pushing member in a power-off state.

8. The automatic door opening device of a dishwasher according to any one of claims 1 to 6, characterized in that: The seat body has a guide channel, and the pushing member is movably installed in the guide channel.

9. A dishwasher, characterized in that: The invention comprises a machine body, a door body and an automatic door opening device of a dishwasher according to any one of claims 1 to 8, wherein the automatic door opening device is installed on the machine body, the push member is in the extended state to open the door body, and the push member is in the retracted state to close the door body.

10. The dishwasher according to claim 9, characterized in that One end of the door body is rotatably connected to the machine body, and the pusher is suitable for abutting against the other end of the door body in the extended state, so that the other end of the door body is spaced apart from the machine body by a preset distance.

11. The dishwasher according to claim 10, characterized in that The preset distance is 80mm-120mm.

12. The dishwasher according to claim 9, characterized in that Also includes: A door lock assembly is used to lock the door body and the machine body when the push member is in the retracted state.

13. The dishwasher according to claim 12, characterized in that The door lock assembly comprises a magnetic member and a magnetically attractable member, one of the magnetic member and the magnetically attractable member is arranged on the door body and the other is arranged on the machine body; or, The door lock assembly is a mechanical lock.

14. The dishwasher according to claim 12, characterized in that When the pushing member is in the retracted state, the elastic force of the elastic member is smaller than the locking force of the door lock assembly.

15. The dishwasher according to claim 12, characterized in that The door lock assembly and the automatic door opening device are integrated.

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