CN115247348B

CN115247348B - Positioning and unlocking module of washing machine

Info

Publication number: CN115247348B
Application number: CN202110459683.7A
Authority: CN
Inventors: 刘凯; 刘晓春; 于明亮; 侯永顺; 吕佩师
Original assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2024-03-01
Anticipated expiration: 2041-04-27
Also published as: CN115247348A

Abstract

The invention provides a positioning unlocking module of a washing machine, which comprises a shell, wherein a positioning rod is arranged in the shell, can extend out of the shell and correspondingly extend into positioning holes arranged on a washing cylinder and/or a machine door; a door opening rod is arranged in the shell, and can extend out of the shell to excite unlocking; and after the positioning rod generates a first movement stroke extending into the positioning hole and then extends out of the second movement stroke, the door opening rod can be driven to extend out of the shell through the transfer transmission structure. The positioning and unlocking module of the washing machine provided by the invention enables the positioning rod to extend into the positioning hole and then drives the door opening rod to unlock, so that the washing cylinder and/or the machine door can be unlocked after being positioned at a preset locking position.

Description

Positioning and unlocking module of washing machine

Technical Field

The invention relates to the field of drying household appliances, in particular to a positioning and unlocking module of a washing machine.

Background

An unlocking module for unlocking a machine door is usually arranged in the conventional washing machine, but the unlocking module can only simply realize the unlocking function, and cannot realize the function of positioning the locking position of the washing drum and/or the machine door. In the process of actually unlocking the machine door, the washing cylinder and/or the machine door is/are ensured to be positioned at a preset position, and the influence of the rotation of the washing cylinder on the unlocking process in the unlocking process is prevented.

In view of the foregoing, there is a need for a positioning and unlocking module for a washing machine, which can ensure that the washing drum and/or the door are locked at a predetermined locking position and then unlocked.

The present invention has been made in view of the above problems.

Disclosure of Invention

The invention aims to provide a positioning unlocking module which can ensure that a washing cylinder and/or a machine door is locked at a preset positioning position and then the machine door is unlocked.

The invention provides a positioning unlocking module of a washing machine, which comprises a shell, wherein a positioning rod is arranged in the shell, can extend out of the shell and correspondingly extend into a positioning hole arranged on a washing cylinder and/or a machine door; a door opening rod is arranged in the shell, and can extend out of the shell to excite unlocking; and after the positioning rod generates a first movement stroke extending into the positioning hole and then extends out of the second movement stroke, the door opening rod can be driven to extend out of the shell through the transfer transmission structure. The positioning and unlocking module of the washing machine provided by the invention enables the positioning rod to extend into the positioning hole and then drives the door opening rod to unlock, so that the washing cylinder and/or the machine door can be unlocked after being positioned at a preset locking position.

Further, the concrete structure of the transfer transmission structure is as follows: the transfer transmission structure comprises a first rack which is arranged on the positioning rod and extends along the movement direction of the positioning rod, and a third rack which is arranged on the door opening rod and extends along the movement direction of the door opening rod; the fourth gear module is provided with a first meshing surface and a second meshing surface, and the first meshing surface is in meshing connection with a third rack in the first movement stroke and the second movement stroke; the second engagement surface is separated from the first rack in the first movement stroke and engaged with the first rack in the second movement stroke.

Further, the movement directions of the positioning rod and the door opening rod which extend outwards are mutually perpendicular, and the first rack and the third rack are mutually perpendicular. The structure of the first rack and the third rack can realize the movement of the positioning rod and the door opening rod which are mutually perpendicular.

Further, the specific structures of the positioning rod, the door opening rod and the fourth gear module are as follows: the positioning rod vertically extends downwards out of the shell, and the first rack extends along the vertical direction; the door opening rod extends out of the shell along the horizontal direction, and the third rack extends along the horizontal direction; the fourth gear module is disposed above the third rack, below the position of the first rack in the first movement stroke, and the first rack is disposed either to the left or to the right of the fourth gear module.

The positioning rod is fixedly provided with a second rack which drives the positioning rod to move downwards along the vertical direction, and the second rack is arranged in parallel with the first rack; the second rack is meshed with the second gear module, and the second gear module is meshed with the power assembly for driving movement.

Further, the specific structure of the power assembly is as follows: the power assembly comprises a motor, an output gear is sleeved on an output shaft of the motor, the output gear is in meshed connection with a reduction gear set, and a final output gear of the reduction gear set is meshed with the second gear module.

Further, a third gear module is arranged between the second gear module and the third rack, and the third gear module is respectively meshed with the second gear module and the third rack. Through the arrangement of the third gear module, the door opening rod can extend outwards for a distance in the first movement stroke.

Further, the specific arrangement of the second gear module, the third gear module, the reduction gear set and the positioning rod in the shell is as follows: the rotation shaft of the second gear module is parallel to the rotation shaft of the motor, the second gear module is provided with a vertical center surface passing through the rotation shaft, the reduction gear set and the third gear module are arranged on the same side relative to the vertical center surface, and the positioning rod is arranged on the other side relative to the vertical center surface.

Further, an operation block is fixed on the positioning rod, a first rack and a second rack are arranged on the operation block, and the bottom end surfaces of the first rack and the second rack are flush with the bottom end surface of the operation block; preferably, the length of the second rack > the length of the first rack; further preferably, the length of the second rack is equal to the total length of the positioning rod extending outwards in the first movement stroke and the second movement stroke, and the length of the first rack is equal to the length of the door opening rod extending outwards in the second operation stroke.

Further, the horizontal distance between the rotating shaft of the fourth gear module and the rotating shaft of the third gear module is L1, wherein L1 is larger than the total length of the door opening rod which extends outwards in the first running stroke and the second running stroke; preferably, the vertical distance between the rotation axis of the second gear module and the rotation axis of the fourth gear module is set to L2, L2 being equal to the length of the positioning rod protruding outward in the first running stroke.

By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:

1) The positioning unlocking module provided by the invention not only can unlock the door lock, but also can position the washing cylinder and/or the machine door. The structure of the positioning unlocking module can realize that the positioning rod can control the machine door to unlock after positioning the washing cylinder and/or the machine door; and further, the washing cylinder and/or the machine door can be positioned at a preset position in the unlocking process.

2) According to the positioning unlocking module provided by the invention, the door opening rod and the positioning rod can realize two-stage movement, namely, the movement of the positioning stage and the unlocking stage through the driving device arranged in the positioning unlocking module. The structure on the locating rod is reasonable, and the door opening rod can be driven to unlock after the locating rod completes the motion of the locating stage.

3) The positioning unlocking module is reasonable in arrangement in internal structure, so that the motions between each gear module and the positioning rod cannot be influenced mutually.

4) The operation block is reasonable in structure design, and the first rack and the second rack are arranged on the bulge at the same time, so that the connection of the operation block with the second gear module and the fourth gear module can be realized through the bulge structure. The third gear module and the fourth gear module are arranged at reasonable positions, so that the stress of the door opening rod is uniform, and the door opening rod is ensured to move along the horizontal direction.

5) The length arrangement of the first rack and the second rack is reasonable, and the first rack and the second rack are shorter and waste is avoided on the premise that the positioning rod and the door opening rod realize expected movement. The second gear module, the third gear module and the fourth gear module are reasonably arranged, so that space can be saved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort.

FIG. 1 is an overall schematic view of the exterior of a door lock module of the present invention;

FIG. 2 is a schematic view of the cooperation of the locking portion and the stopper when the door of the present invention is unlocked;

FIG. 3 is a schematic view of a stopper lock of the present invention;

FIG. 4 is a schematic diagram of the manual door opening block and the limiting block according to the invention;

FIG. 5 is an overall external schematic view of the positioning and unlocking module of the present invention;

FIG. 6 is a schematic view of the internal structure of the positioning and unlocking module housing of the present invention;

FIG. 7 is a schematic diagram of a door lock detection module according to the present invention;

FIG. 8 is a schematic view of a gate system of the present invention;

FIG. 9 is a schematic diagram of the door lock module, positioning and unlocking module of the present invention;

FIG. 10 is a schematic view of the steps of opening the door of the present invention;

FIG. 11 is a schematic view of the operation steps of the present invention for closing the door.

The reference numerals in the drawings indicate:

1. a door hook; 2. a limiting block; 3. a housing; 4. a locking part; 5. an end face; 6. a first limiting surface; 7. A guide slope; 8. the second limiting surface; 9. a third limiting surface; 10. a support rod; 11. a torsion spring; 12. a hook part; 13. a clamping hole; 14. a guide rail; 15. a fixing part; 16. an opening; 17. manually opening the door block; 18. a first contact surface; 19. a second contact surface; 20. a button; 21. a housing; 22. a positioning rod; 23. a door opening rod; 24. a motor; 25. an output gear; 26. a first gear module; 27. a second gear module; 28. an operation block; 29. a second rack; 30. a third rack; 31. a third gear module; 32. a first rack; 33. A fourth gear module; 34. a protrusion; 35. a first gear; 36. a second gear; 37. a light shielding plate; 38. A photovoltaic panel; 39. a guide hole; 40. a door lock module; 41. positioning and unlocking the module; 42. a washing drum door; 43. A washing machine door; 44. and a limit column.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

The invention provides a washing machine, a washing drum for washing clothes is arranged in the washing machine, and a washing drum door 42 is arranged on the washing drum. A support housing and/or an outer tub is provided outside the washing tub, and a washing machine door 43 is provided at a position opposite to the washing tub door 42 of the washing tub on the support housing and/or the outer tub.

The door lock system for locking and unlocking the machine door is arranged in the washing machine, and comprises a door lock module 40 which can lock the machine door after the machine door is closed; the washing machine comprises a positioning unlocking module 41 which can correspondingly unlock the door lock module 40, and the positioning unlocking module 41 can also realize the positioning of the locking position of the washing drum. The door lock structure may be applied to the washing machine door 43 and/or the washing tub door 42.

Specifically, the door lock module 40 may be applied to a wash tub door 42, and also to a washing machine door 43. The door lock module 40 includes a door hook fixed to the door, and a locking device fixed to the washing drum or the supporting housing, and the door hook may be correspondingly inserted into the locking device when the door is closed and hooked by the locking device to lock the door. For example, a door hook may be provided on the tub door 42, and a locking device may be provided on the tub to lock the tub door 42. Or a door hook and a locking device can be arranged on the washing machine door 43 and the supporting shell to lock the washing machine door 43.

The positioning unlocking module 41 is internally provided with a positioning rod 22, and the positioning rod 22 can realize the positioning of the position by penetrating into a positioning hole; the positioning unlocking module 41 is also provided with a door opening rod 23, and the door opening rod 23 can excite a door hook of the door lock module 40 to be separated from the locking device after the door opening rod 23 performs expected movement so as to unlock the machine door; namely, the positioning and unlocking module 41 provided by the invention not only can realize positioning, but also can realize the unlocking function at the same time. In order to unlock the drum door 42, a positioning unlocking module 41 may be provided on the drum opposite to the door lock device on the drum door 42, and a positioning hole may be provided on the drum front flange, so that the positioning of the locked position of the drum, drum door 42 may be achieved. Or the positioning unlocking module 41 may be provided on the support housing in order to achieve unlocking of the washing machine door 43.

As can be seen from the above description, the door lock system of the washing machine provided by the present invention can enable the washing drum door 42 and the washing machine door 43 to be opened or locked independently, and the door lock system can also enable the washing drum and the washing machine door to be positioned at the locking positions. The invention also provides a control method for correspondingly controlling the inner and outer double-layer doors according to the structure of the door lock system.

Example 1

The present embodiment provides a door lock module 40 for locking and unlocking a door, wherein the door lock module 40 includes a door hook 1 fixed to the door, and the door hook 1 moves together with the door during closing of the door. The door lock module 40 further includes a lock body for locking the door hook 1. The lock body is provided with a shell, when the machine door is closed, the door hook 1 correspondingly stretches into the lock body and is locked by the body, so that the machine door is locked.

The lock body comprises a locking part 4 capable of rotating, the locking part 4 can hook the door hook 1 in rotating motion along a certain direction, and the locking part can be separated from contact with the door hook 1 in moving along the opposite direction. The lock body also comprises a limiting block 2 for limiting the motion state of the locking part 4. When the door hook 1 is hooked by the locking part 4, the limiting block 2 is abutted against the locking part 4, so that the locking part 4 is kept motionless, and the locking part 4 is ensured to lock the door hook 1 continuously and stably. When the unlocking is needed, the limiting block 2 can be moved, the limiting of the locking part 4 is released, the locking part 4 rotates in the reverse direction, and the locking structure is separated from the door hook 1, so that the unlocking of the door is realized.

As shown in fig. 1, the lock body includes a housing 3, and a locking portion 4 is rotatably provided in the housing 3. Specifically, a supporting rod 10 is erected in the shell 3, two ends of the supporting rod 10 are fixed on the shell 3 of the lock body, a rotatable locking part 4 is sleeved on the supporting rod 10, and the locking part 4 is fixed inside the shell 3 through the supporting of the supporting rod 10. The stopper 2 has a structure similar to an "L" shape, and the locking portion 4 is embedded in a gap of the "L" shape on the stopper structure when the locking device does not start to move. The "L" shaped structure is comprised of a vertical spacing post 44 and a horizontal base perpendicular thereto. When the limiting block 2 is embedded in the gap of the L-shaped structure, the end face 5 of the locking part 4 perpendicular to the rotating shaft is abutted against the first limiting surface 6 opposite to the limiting post 44. Namely, at the beginning of movement, the locking part 4 is clamped and limited with the limiting block 2. A pressure spring is arranged between the end part of one side of the limiting block 2, which is perpendicular to the rotating shaft of the locking part 4, and the shell 3, and the limiting block 2 compresses the pressure spring when the limiting block is stationary at the beginning of movement. That is, when the locking part 4 is in a static state, the limiting block 2 is limited by the static locking part 4, and the limiting block 2 compresses the compression spring.

When the door hook 1 contacts and triggers the locking part 4 to rotate, the locking part 4 rotates, and the locking part 4 releases the movement restriction of the limiting block 2, so that the limiting block 2 starts to move under the action of the pressure spring. As shown in fig. 2 and 3, the stopper post 44 is provided with a guide slope 7 at a vertex angle position opposite to the rotated locking portion 4. The locking part 4 which starts to rotate can be matched and contacted with the guiding inclined surface 7 on the moving limiting block 2. The locking portion 4 rotates in accordance with a set trajectory by the guiding action of the guide slope 7 in contact therewith.

The guide slope 7 is a slope gradually expanding downwards from the top of the limit post 44, and the shape is such that the locking part 4 contacting with the guide slope 7 is easy to rotate clockwise under the guiding action of the guide slope 7. The locking part 4 rotating clockwise is easy to hook the door hook 1, and the locking part 4 after the door hook 1 is hooked can be finally in limit abutting connection with the limiting block 2, namely the locking part 4 is locked by the limiting block 2. I.e. the guiding ramp 7 is provided to facilitate the guiding of the locking part 4 to rotate and hook the door hook according to a set trajectory.

The specific structure of the abutment of the limit post 44 and the locking portion 4 of the hook 1 is shown in fig. 3: the stopper post 44 has a second stopper surface 8 parallel to the rotation axis of the locking portion 4, and the locking portion 4 has a third stopper surface 9 parallel to the rotation axis. The second limiting surface 8 of the limiting post 44 can be in limiting abutting connection with the third limiting surface 9 of the rotated locking part 4. Namely, the limit post 44 can lock the locking part 4 hooked on the door hook 1, thereby realizing the locking of the machine door. The second limiting surface 8 on the limiting post 44 is connected with the guiding inclined surface 7, and the second limiting surface 8 is arranged at one side close to the rotating locking part 4. The locking part 4 which is guided to rotate by the guiding inclined plane 7 rotates to be in limit abutting connection with the second limit surface 8 on the limit post 44, namely, the limit block 2 can realize locking of the locking part 4. Correspondingly, when the unlocking is needed, the limiting block 2 is only required to be excited to move, the second limiting surface 8 and the third limiting surface 9 are released from limiting, and the locking part 4 rotates in the opposite direction under the action of the torsion spring 11, so that the locking part 4 is separated from the door hook 1.

As shown in the drawing, part of the structure of the stopper 2 is provided outside the housing 3 so that other structures can push the stopper 2. When the door is in a locking state, the pressure spring arranged on the limiting block 2 is in a compression force storage state. When the door needs to be unlocked, other structures push the part of the limiting block 2 positioned outside the shell 3, and the limiting block 2 generates unlocking motion under the action of the pressure spring. Further, as described above, the door hook 1 is separated from the locking structure, and the door is unlocked. Specifically, one end of the limiting block 2, which is not provided with the pressure spring, extends to the outside of the shell 3, and the part extending to the outside of the shell 3 is used for other devices to excite the limiting block 2 to move.

The specific structure of the door hook 1 is shown in the figure, the door hook 1 comprises a fixing part 15 fixed with the machine door, screw holes and bolt holes can be arranged on the fixing part 15, and the door hook 1 is fixed on the machine door through threaded connection. Or other fixing structures such as a buckle can be arranged on the fixing part 15 to fix the door hook 1 on the machine door. In this embodiment, screw connection is taken as an example, and a screw hole is provided on the door hook 1. The machine door is provided with a mounting groove for mounting the door hook 1, the mounting groove can be internally embedded with a fixing part 15 of the door hook 1, and the fixing part 15 of the door hook 1 is fixed in the mounting groove through threaded connection. The fixing portion 15 of the door hook 1 is disposed outside the housing 3 and is fixed to the door, and the door hook 1 further includes a hook portion 12 connected to the fixing portion 15. The hook portion 12 extends from a connection position with the fixing portion 15 toward the inside of the housing 3, and a part of the hook portion 12 extending into the housing 3 is structurally provided with a locking hole 13. When the door is required to be locked, after the door hook 1 moves randomly, the hook portion 12 of the door hook 1 contacts with the locking structure, the hook portion 12 triggers the locking portion 4 to rotate, and part of the structure of the locking portion 4 is clamped in the clamping hole 13, namely, the door hook 1 is locked through clamping connection of the hook and the locking portion 4, so that the door is locked. The door hook 1 needs to move according to a preset track, so that the clamping hole 13 on the door hook 1 is clamped and matched with the locking part 4, and the locking machine door is further guaranteed. In order to better define the trajectory of the door hook 1, a guide rail 14 for the door hook 1 is provided in the housing 3 of the locking structure. The guide rail 14 extends from the top end of the housing 3 opposite to the door hook 1 toward the inside of the housing 3. The hook portion 12 of the door hook 1 is embedded in the guide rail 14, and when the door hook 1 performs locking and unlocking motions, the hook portion 12 runs along the direction set by the guide rail 14, so that the normal locking and unlocking of the door are ensured as described above.

As shown in fig. 3, when the door is closed, the door hook 1 extends into the locking portion 4, the door hook 1 contacts with the locking portion 4 arranged oppositely, and the locking portion 4 is activated to be clamped with the clamping hole 13 on the door hook 1. The locking part 4 is provided with an opening 16 facing the C-shaped structure of the clamping hole 13, and the opening 16 of the C-shaped structure can be clamped with the clamping hole 13 of the door hook 1. The structure of the locking part 4 is rotated under the contact action of the door hook 1, and in the rotating process, the clamping hole 13 of the door hook 1 is clamped and embedded with the opening 16 of the C-shaped structure. And simultaneously, the limiting block 2 moves to a position propped against the C-shaped structure, so that the door hook 1 is kept to be clamped by the C-shaped structure, and further locking of the machine door is realized. Specifically, as described above, the second limiting surface 8 of the limiting block 2 is in limiting abutment with the third limiting surface 9 of the locking portion 4. The third limiting surface 9 is a surface of the locking portion 4 opposite to the opening 16 in the C-shaped structure. The locking structure is also required to be provided with a torsion spring 11 so that the locking part 4 of the locking structure rotates during unlocking, and the C-shaped structure of the locking part 4 is separated from the door hook 1. The torsion spring 11 is specifically sleeved on the support rod 10, and is disposed on both end surfaces of the locking portion 4 perpendicular to the rotation axis.

The structure setting of the stopper 2 in the door lock module 40 provided in this embodiment is reasonable, the stopper 2 includes a plurality of end faces that can contact with the locking portion 4, through the setting of these end faces, the locking portion 4 can be limited by the stopper 2 and can not rotate when stationary, the locking portion 4 is guided by the stopper 2 to rotate according to the setting track after being triggered to move, and the locking portion 4 is locked by the stopper 2 after hooking the door hook 1. The door lock module 40 provided in this embodiment is reasonable in structural arrangement, so that locking and unlocking of the door can be achieved by pushing the portion of the stopper 2 located outside the housing 3. And the locking and unlocking of the machine door can be realized only by moving the limiting block 2, and the operation is simpler.

Example 2

The present embodiment provides a door lock module 40 based on embodiment 1, where the door lock module 40 has the door hook 1, the locking portion 4 and the stopper 2 as described above, and the door hook 1 and the locking portion 4 can be mutually engaged to lock the door, and the stopper 2 is used to keep the door hook 1 and the locking portion 4 stably engaged or disengage the door hook 1 and the locking portion 4. The door lock module 40 of the present embodiment is different from the door lock module 40 of embodiment 1 in that the door lock module 40 of the present embodiment is provided with the manual door opening block 17 for manually controlling the movement of the stopper 2, so that the door lock module 40 can be manually controlled to unlock the door. In embodiment 1, it is mentioned that the movement of the stopper 2 of the door lock module 40 can be automatically triggered by other structures outside the door lock module 40, so as to automatically unlock the machine door. Once the device for automatically supplying energy for unlocking the machine door is in a problem, the machine door cannot be normally unlocked, and the use of the washing machine is affected. The door lock module 40 provided in this embodiment has the manual door opening block 17, so that the door can be manually triggered to be unlocked in any condition, and the normal unlocking of the door can be ensured.

As shown in fig. 1, a mounting hole into which the manual door opening block 17 is inserted is provided on the housing 3 of the door lock module 40. The top of the manual door opening block 17 is provided with a convex button 20 for conveniently pressing down the manual door opening block 17. Preferably, the button 20 protrudes from the surface of the housing 3 of the door lock module 40, so that the button 20 is pressed when necessary. The manual door opening block 17 inserted into the housing 3 and the stopper have end surfaces that contact each other. The mutually contacted end surfaces are respectively a first contact surface 18 on the limiting block 2 and a second contact surface 19 on the manual door opening block 17,

as shown in fig. 4, a contact portion capable of contacting with the embedded manual door opening block 17 is arranged on the limiting block 2, the contact portion is arranged on one side, close to the manual door opening block 17, of the limiting block 2 and opposite to the manual installation block, a first contact surface 18 is arranged on the contact portion, and the first contact surface 18 is a curved surface protruding outwards. The second contact surface 19 on the manual door opening block 17 is correspondingly designed as a slope which gradually expands outwards from the bottom upwards. When the button 20 is pressed, the manual door opening block 17 moves downward. At this time, due to the shape features of the first contact surface 18 and the second contact surface 19, the second contact surface 19 will push the first contact surface 18, i.e. trigger the movement of the stopper 2. The pressure spring at the tail part of the limiting block 2 is in a compression state when the machine door is in a locking state, once the limiting block 2 is triggered to move, the pressure spring can drive the limiting block 2 to be separated from the locking structure, so that the door hook 1 is separated from the locking structure, and unlocking of the machine door is completed.

The manual installation block is also provided with a pressure spring, for example, the pressure spring can be arranged at the bottom of the manual installation block. When the button 20 on the manual installation block is pressed for unlocking, the manual installation block is reset under the action of the pressure spring. In the resetting process of the manual installation block, the second contact surface 19 and the first contact surface 18 are matched and limited, the second contact surface 19 is finally clamped by the first contact surface 18, and the manual door opening block 17 is ensured to be reset to a preset position, so that the manual installation block can be ensured to be normally used next time.

The door lock module 40 provided in this embodiment can ensure that the door can be unlocked manually in any case because the manual door opening block 17 is provided inside the locking device.

Example 3

The present embodiment provides a positioning and unlocking module 41 of a washing machine door for unlocking the door and positioning and locking the door, and the positioning and unlocking module 41 is suitable for all washing machine doors, especially suitable for unlocking a washing drum door 42 arranged on a washing drum. The positioning unlocking module 41 is provided with a door opening rod 23 and a positioning rod 22 as shown in fig. 5; the positioning and unlocking module 41 is structured to enable the positioning rod 22 to position the locking position and enable the door opening rod 23 to unlock the door.

When the positioning and unlocking module 41 is in a naturally starting state, both the positioning rod 22 and the door opening rod 23 remain stationary inside the positioning and unlocking module 41. The positioning and unlocking module 41 can perform two-stage movement when being positioned and unlocked. The first stage is a positioning stage, wherein the positioning rod 22 extends out of the positioning unlocking module 41 and into a positioning hole which is correspondingly arranged and used for positioning the positioning rod 22, and the positioning rod 22 passes through the positioning hole to limit the washing drum. The positioning holes may be provided at the tub door 42 and/or the tub, and the tub door 42 may be stopped at a predetermined position when the washing machine is stopped, and the positioning holes are positioned opposite to the positioning rods 22. The positioning rod 22 is controlled to extend into the positioning hole, so that the washing drum and/or the washing drum door 42 can be locked at a preset position. Specifically, the positioning hole may be provided on the outer tub front flange. Once the washing machine stops running, the washing drum door 42 and the washing drum will stop at the preset position, at this time, the positioning hole on the front flange of the washing drum is opposite to the positioning rod 22, and the positioning rod 22 is controlled to move down into the positioning hole, so that the positioning of the locking position of the washing drum and/or the washing drum door 42 can be completed.

In order to ensure the positioning accuracy, a guide rail groove can be arranged at the position of the positioning hole of the front flange of the washing cylinder, and the positioning rod 22 is embedded in the guide rail groove, so that the movement track of the positioning rod 22 can be accurately defined. The positioning rod 22 can be further provided with a sliding block, and the guide rail groove is provided with a groove for clamping the sliding block. When the positioning rod 22 completes the positioning movement, the slider can be controlled to be embedded in the groove. In this way, by providing detection means in the guide rail groove and/or recess, the detection means can detect whether positioning is completed, i.e. if positioning is successful, the positioning rod 22 and/or the slide should be moved to a preset position of the guide rail groove and/or recess, the detection means can detect the positioning rod 22 and/or the slide. The uneven positioning unlocking module 41 provided by the embodiment can utilize the positioning rod 22 to position the locking position of the washing drum and the machine door, and can also detect whether the positioning is successfully completed or not through the detection device.

In the positioning stage, the door opening lever 23 moves in the horizontal direction to the outside of the positioning unlocking module 41, that is, the door opening lever 23 moves toward the door lock module 40, so that the door lock module 40 is activated to unlock after the door opening lever 23. In the positioning stage, the positioning rod 22 extends into the positioning hole, and the door opening rod 23 extends to the door lock module 40 for a certain distance, so that when the door opening rod 23 continues to extend outwards again, the door opening rod can extend to be contacted with the door lock module 40, and unlocking is triggered. In this embodiment, the door opening lever 23 moves in the horizontal direction, and the positioning lever 22 moves in the vertical direction as an example. In practice, the desired movement trajectories of the door opening lever 23 and the positioning lever 22 are also adjustable. The structure of the positioning unlocking module 41 of this embodiment can realize the movement direction of the door opening rod 23 and the positioning rod 22, and after the installation angle of the positioning unlocking module 41 is changed, the door opening rod 23 can also move along the vertical direction, and the positioning rod 22 moves along the horizontal direction.

After the positioning phase is completed, the positioning unlocking module 41 will enter the unlocking phase. In the unlocking stage, the door opening rod 23 continues to move outside the positioning unlocking module 41 along the horizontal direction, and the door opening rod 23 contacts and excites the door lock module 40 on the machine door, so that the door lock module 40 is unlocked. The positioning and unlocking module 41 of the embodiment firstly passes through the positioning stage and then the unlocking stage in operation, so that the washing drum and the machine door are locked at the preset positions and then unlocked, and the washing drum and the machine door are locked at the preset positions in the unlocking process. And when the machine door is locked, the structure such as the positioning rod 22 in the positioning unlocking module 41 of the embodiment can be utilized to ensure that the washing drum and the machine door are locked at the preset positions. Namely, the positioning unlocking module 41 provided in this embodiment can lock the washing drum at a preset position in the process of opening and closing the door of the washing machine.

As shown in fig. 6, the positioning and unlocking module 41 includes a first drive system that powers the positioning stage movement. The first driving system comprises a motor 24, the motor 24 comprises an output shaft for outputting rotary motion, an output gear 25 is sleeved on the output shaft, the output gear 25 is meshed with a first gear 35, a first gear module 26 is mainly used for decelerating and transmitting the rotary motion, and the first gear module 26 is a reduction gear set. The first gear module 26 includes a first gear 35 having a larger number of teeth and a second gear 36 having a smaller number of teeth, and the first gear 35 is disposed coaxially with the second gear 36. The output gear 25 is meshed with a first gear 35 with a larger number of teeth, and the first gear 35 can rotate to drive a second gear 36 to rotate. I.e. by the connection of the output gear 25 with the first gear 35 module 26, the rotational movement output by the motor 24 is slowed down.

The first gear module 26 is in meshed connection with the second gear module 27, in particular the second gear 36 of the first gear module 26 is in meshed connection with the second gear module 27. The second gear module 27 provides power for driving the door opening rod 23 and the positioning rod 22 to move in a desired manner, namely, the second gear module 27 drives the positioning rod 22 to move downwards, and simultaneously drives the door opening rod 23 to move outwards for a certain distance through the third gear module 31. The second gear module 27 is required to bear a large force since the second gear module 27 provides power to both the positioning rod 22 and the door opening rod 23, and thus the strength of the second gear module 27 needs to be enhanced, and in particular, as shown in the drawing, a reinforcing rib may be provided on the second gear module 27.

It should be noted here that the purpose of the third gear module 31 is to: the door opening rod 23 extends outwards for a certain distance in the unlocking stage, so that when the door opening rod 22 is continuously driven by the positioning rod 22 to extend outwards again in the unlocking stage, the total length of the outwards extending door opening rod 23 is ensured, and the door opening rod 23 can be contacted with the door lock module to trigger unlocking. The first gear module 26, the second gear module 27, and the third gear module 31 are fixed gears with fixed rotation shafts.

As shown in fig. 6, the positioning unlocking module 41 further includes a running block 28, wherein the running block 28 embeds the positioning rod 22, and the positioning rod 22 can move together with the running block 28. A second rack 29 is arranged on the running block 28 at a position opposite to the second gear module 27, and the second rack 29 is connected with the second gear module 27 in a meshed manner. In this way, the second gear module 27 can drive the second rack 29 to move, and then drive the running block 28 and the positioning rod 22 to move, so that the positioning rod 22 finally realizes positioning movement. I.e. the second gear module 27, by being connected to the second rack 29, is realized to power the movement of the positioning rod 22 during the positioning phase.

The positioning unlocking module 41 has a housing 21, and the first gear module 26, the second gear module 27, and the third gear module 31 are all disposed in the housing 21, and the positioning rod 22 and the door opening rod 23 are both retractable in the housing 21, which results in a large number of structures in the housing 21, so that in order to save space of the housing 21 and prevent mutual interference of the structures of the parts disposed in the housing 21, a reasonable space arrangement is required in the housing 21. Specifically, the rotation axis of the second gear module 27 is parallel to the rotation axis of the motor 24, the second gear module 27 has a vertical center plane passing through the rotation axis, the first gear module 26 and the third gear module 31 are disposed on the same side with respect to the vertical center plane, and the positioning lever 22 is disposed on the other side with respect to the vertical center plane. The positioning rod 22 and the third gear module 31 are respectively arranged at the two sides of the second gear module 27, so that the movement of the positioning rod 22 and the movement of the door opening rod 23 are not interfered with each other. And since the first gear module 26, the second gear module 27 and the third gear module 31 are sequentially connected, that is, there must be a difference in height between the first gear module 26 and the third gear module 31, the first gear module 26 and the third gear module 31 may be disposed on the same side.

As can be seen from the above structure, in the positioning stage, the positioning unlocking module 41 can simultaneously control the door opening lever 23 and the positioning lever 22 to move, the motor 24 drives the first gear module 26 to perform the deceleration rotation first, then the first gear module 26 drives the second gear module 27 to rotate, the rotating second gear module 27 drives the third rack 30 to rotate and the third gear module 31 to rotate respectively, and then simultaneously drives the positioning lever 22 to move downwards and the door opening lever 23 to move towards the outside of the positioning unlocking module 41 along the horizontal direction.

As shown in fig. 6, in the unlocking phase, the door opening lever 23 will continue to move in the horizontal direction to the outside of the positioning unlocking module 41 to effect unlocking of the door. To effect the movement of the unlocking phase, the positioning unlocking module 41 is provided with a fourth gear module 33 which can push the door opening lever 23 further outwards. The fourth gear module 33 is also a fixed gear with a fixed rotation shaft, the fourth gear module 33 is arranged above the third rack 30 of the door opening rod 23, the fourth gear module 33 is always in contact with the third rack 30 of the door opening rod 23, and once the fourth gear module 33 starts to rotate, the first meshing surface on the fourth gear module 33 is meshed with the third rack 30. The first rack 32 is disposed on the surface of the running block 28 opposite to the fourth gear module 33, and the first rack 32 will continuously descend along with the running block 28 during the positioning stage, when the positioning stage is completed, the running block 28 and the first rack 32 thereon will move to a preset position, and the fourth gear module 33 is disposed at a position capable of being engaged with the first rack 32 located at the preset position, i.e. when the first rack 32 of the running block 28 reaches the position engaged with the fourth gear module 33, the fourth gear module 33 will be driven to rotate, so that the fourth gear module 33 pushes the door opening lever 23 to perform the unlocking motion. The door opening lever 23 again protrudes to the outside of the positioning unlocking module 41 and triggers the door lock module 40 so that the door lock module 40 completes the unlocking action. The rotation axis of the fourth gear module 33 and the rotation axis of the third gear module 31 are equal to the vertical distance of the door opening lever 23. By the arrangement, the force applied to the door opening rod 23 can be more uniform, and the door opening rod 23 is ensured to move along the horizontal direction.

As shown in fig. 6, a rectangular protrusion 34 may be provided on the running block 28, a second rack 29 is provided on a side of the protrusion 34 opposite to the second gear module 27, and a first rack 32 is provided on the other side of the protrusion 34 parallel to the side on which the second rack 29 is provided. By arranging the running block 28 in this way, the positioning rod 22 is driven by the second gear module 27, and the positioning rod 22 drives the fourth gear module 33 to move, so that the space in the shell 21 is saved.

As shown in fig. 6, the bottom end surfaces of the first rack gear 32 and the second rack gear 29 are each disposed flush with the bottom end surface of the running block 28, thus making the shape of the projection 34 relatively simple. The positioning rod 22 needs to be driven by the second rack 29 to extend downwards in the whole course of the positioning stage and the unlocking stage, so the length of the second rack 29 should be sufficient to enable the positioning rod 22 to complete all the movements of the positioning stage and the unlocking stage, i.e. the length of the second rack 29 is greater than or equal to the total length of the positioning rod 22 extending outwards in the positioning stage and the unlocking stage. In order to save the length of the racks, the length of the second rack 29 is equal to the total length of the positioning rod 22 extending outward during the movement of the positioning stage and the movement of the unlocking stage, as shown in fig. 6, L5 is the length of the positioning rod 22 extending downward during the positioning stage, and L4 is the length of the positioning rod 22 extending downward during the unlocking stage, i.e., the length of the second rack 29=l4+l5. Since the first rack 32 drives the door opening rod 23 to move in the unlocking stage, the length of the second rack 32 should satisfy the requirement that the door opening rod 23 completes the movement in the unlocking stage, so the length of the first rack 32 is greater than or equal to the length of the door opening rod 23 extending outwards in the unlocking stage. Preferably, the length of the second rack 29 > the length of the first rack 32.

And as shown in fig. 6, the fourth gear module 33 and the third gear module 31 both drive the third rack 30 on the door opening lever 23 to move. Assuming that the horizontal distance between the rotation axis of the fourth gear module 33 and the rotation axis of the third gear module 31 is L1, assuming that the third rack 30 starts to protrude leftward from the position where it contacts the third gear module 31, if L1 is greater than the total length of the door opening lever 23 protruding outward in the positioning stage and the unlocking stage, the third rack 30 may not be in meshed contact with the fourth gear module 33, so L1 is smaller than the total length of the door opening lever 23 protruding outward in the positioning stage and the unlocking stage.

And when the gears are all normally engaged, the second rack 29 of the positioning lever 22 starts to be engaged with the second gear module 27 at the position where the rotation axis is located, and the first rack 32 of the positioning lever 22 starts to be engaged with the fourth gear module 33 at the position where the rotation axis is located. Let the vertical distance between the rotation axis of the second gear module 27 and the rotation axis of the fourth gear module 33 be L2, the length of L2 should be greater than or equal to the length of the positioning rod 22 protruding outwards in the positioning stage, so as to ensure that the positioning rod 22 completes the movement of the positioning stage. In order to save space inside the positioning and unlocking module housing, the length of L2 is preferably equal to the length of the positioning rod 22 protruding outwards during the positioning phase.

The positioning and unlocking module 41 provided in this embodiment includes the door opening lever 23 and the positioning lever 22, and the structure inside the positioning and unlocking module 41 enables the positioning lever 22 to position the locking position of the washing drum, and simultaneously enables the door opening lever 23 to unlock the machine door. And through the structure of the positioning unlocking module 41 in the embodiment, the positioning rod 22 extending into the positioning hole drives the door opening rod 23 to perform unlocking movement, so that the washing drum and/or the machine door is unlocked only when locked at a preset position.

Example 4

The embodiment provides a washing machine door lock detection module based on the above embodiment, where the washing machine door lock detection module provided in the embodiment may be used to detect a state of a machine door lock. The door lock may include the door lock module 40 mentioned in embodiment 1 and embodiment 2, and the positioning unlocking module 41 mentioned in embodiment 3. The washing machine door lock detection module at least comprises a door opening rod 23 for exciting the door lock to unlock and a positioning rod 22 for positioning the door lock and/or the washing cylinder; wherein the door opening rod 23 and the positioning rod 22 can be mutually linked. The washing machine door lock detection module further comprises a detection device for detecting the positioning rod 22 and judging the door lock state. Since the door opening lever 23 and the positioning lever 22 are interlocked with each other, the positioning lever 22 drives the door opening lever 23 to move after the positioning of the washing drum and/or the door is achieved as described in embodiment 3. Therefore, when the door opening lever 23 does not unlock the door or the door opening lever 23 has unlocked the door, the positioning lever 22 has different movement states and/or moves to different positions, so that the movement state of the door lock can be determined by detecting the positioning lever 22 through the detecting device.

In the process of actually unlocking the door, the door opening lever 23 needs to contact and trigger the door lock module 40 as described in embodiments 1 and 2, and a detection device is inconvenient to be arranged between the door opening lever 23 and the door lock module 40, which makes it difficult to detect the door opening lever 23. And when the door opening lever 23 has the positioning lever 22 interlocked with each other, such as the positioning unlocking module 41 provided in embodiment 3; it is possible to detect whether the door lock is unlocked by detecting the movement of the positioning lever 22 as described above.

The door opening rod 23 and the positioning rod 22 may need to go through different movement stages in the process of completing unlocking and positioning, and the different stages respectively correspond to different states of the door lock; the door lock state can be determined by detecting the movement stage of the positioning rod 22. Such as the positioning and unlocking module 41 described in embodiment 3, the positioning and unlocking module 41 can control the positioning lever 22 and the door opening lever 23 to perform the positioning stage and the unlocking stage. In the positioning stage, the positioning rod 22 penetrates into the positioning hole to realize positioning, and correspondingly, the door opening rod 23 extends out of the positioning unlocking device. When the positioning lever 22 and the door opening lever 23 complete the movement of the positioning stage, the door lock is in a locked state, and the washing drum and the machine door are in a state of being locked at a preset position. When the door opening lever 23 and the positioning lever 22 complete the unlocking stage, the door lock is in an unlocked state, and the washing drum and the machine door are still in a state of being locked at the preset position. The position of the positioning rod 22 is changed at the time of the positioning stage and the unlocking stage, so that the detection device detects the position of the positioning rod 22 to determine the movement stage of the positioning rod 22 and further determine the states of the door and the lock. The positioning and unlocking module 41 may be different from the positioning and unlocking module 41 in embodiment 3, so long as the door opening lever 23 is linked with the positioning lever 22 and the positioning lever 22 is positioned differently in different movement stages, the state of the door lock and/or the door can be determined according to the position of the positioning lever 22.

In order to better detect the position of the positioning rod 22, the positioning rod 22 preferably moves along the same linear track in both the positioning stage and the unlocking stage, and the detecting device is configured to detect the movement position of the positioning rod 22 along the linear track. The positioning rod 22 moves along the linear track, so that the movement track of the positioning rod 22 is relatively simple, the tracking of the movement position of the positioning rod 22 is facilitated, and the position setting of the detection device is facilitated. For example, the positioning and unlocking module 41 provided in embodiment 3 can realize that the positioning rod 22 moves along the same linear track in the positioning stage and the unlocking stage; the detecting means need only be arranged on the linear motion path of the positioning rod 22.

The detection device may be an image acquisition device or an electrical signal detection device, and in this embodiment, a light sensation detection device is taken as an example for explanation. As shown in fig. 7, a light shielding plate 37 is provided on the positioning lever 22, and a light sensation detecting device is disposed at the linear movement locus of the positioning lever 22. Inside the housing 21 of the positioning and unlocking module 41, a luminous photoelectric plate 38 is arranged at a position opposite to the linear track of the positioning rod 22. The light shielding plate 37 is fixed on the positioning rod 22, the positioning rod 22 can drive the light shielding plate 37 to move, when the positioning rod 22 moves to different positions, the light shielding plate 37 can shield light at different positions, and the position of the positioning rod 22 can be positioned by detecting different light shielding positions through the light sensation detection device. Specifically, a part of the light source and the light sensing device of the photoelectric plate 38 are disposed at two sides opposite to the light shielding plate 37, so that a part of the light emitted from the photoelectric plate 38 to the light sensing device is necessarily shielded by the light shielding plate 37.

As shown in fig. 7, a light shielding plate 37 is provided on the running block 28 fixed on the positioning lever 22. As also shown in fig. 7, a guide hole 39 may be provided on the photo-electric plate 38, and the light shielding plate 37 may be inserted into the guide hole 39 correspondingly and operated in a direction defined by the guide hole 39, so that the operation of the light shielding plate 37 may be defined; and the light sensing device is arranged along the guide hole 39, so that the light sensing device can be ensured to detect that the light is blocked.

Specifically, the light sensing device comprises a first light sensing detector and a second light sensing detector, wherein the first light sensing detector is arranged at the expected position where the positioning rod 22 completes the positioning stage movement and the light shielding plate 37 is positioned, and the second light sensing detector is arranged at the expected position where the positioning rod 22 completes the unlocking stage movement and the light shielding plate 37 is positioned. The first light-sensitive detector and the second light-sensitive detector are both disposed on the photo-electric plate 38. Thus, when the first light sensing detector detects that the light is blocked, the corresponding positioning rod 22 completes the movement of the positioning stage; when the second light-sensitive detector detects light shielding, the corresponding positioning rod 22 completes the movement of the unlocking stage. Wherein the first light-sensitive detector and the second light-sensitive detector may be composed of light-sensitive detectors.

It is further preferred that the first light-sensitive detector and the second light-sensitive detector are each provided with a control switch which is connected to a motor 24 for powering the movement of the door opening lever 23 and the positioning lever 22. Thus, the motor 24 can start to work to control the first light sensor and the second light sensor to work, thereby achieving the effects of reducing energy consumption and prolonging the service life of the light sensor. And all the light sensing detection devices can emit position signals, and the washing machine door lock detection module further comprises a signal receiving device for receiving the position signals. The washing machine door lock detection module can judge the state of the door lock according to the position signal sent by the light sensing detection device.

This embodiment provides a solution to detect if the positioning rod 22 is locked in place. The washing cylinder is provided with a positioning hole for the positioning rod 22 to penetrate, the position of the positioning hole is provided with a guide rail groove, and the positioning rod 22 penetrating into the positioning hole is embedded in the guide rail groove to move. The bottom of the positioning rod 22 is provided with a fixed slide block, a groove capable of being clamped with the slide block is arranged in the guide rail groove, a detection device is arranged in the groove, and the detection device can correspondingly detect whether the slide block is clamped with the groove. When the positioning rod 22 completes all the movements of the positioning stage and the unlocking stage, the sliding block on the positioning rod 22 is embedded in the groove, so that the detection device arranged in the groove can be used for detecting whether the positioning movement of the positioning rod 22 is positioned in place.

The embodiment also provides a locking detection device for detecting whether the machine door is locked in place, wherein the locking detection device comprises a magnet arranged on the machine door, and a Hall sensor is arranged at a corresponding position on the washing cylinder; the hall sensor detects the position of the magnet. When the door is locked in place, the magnet on the door should reach a predetermined position, and the hall sensor should detect the magnet accordingly, thereby determining that the door is locked in place.

Since the washing drum door 42 needs to rotate together with the washing drum, the washing drum door 42 cannot be controlled to be automatically closed by an electric signal, and the door lock device as described in embodiments 1 and 2 can be arranged on the washing drum door 42, so that the washing drum door 42 can be locked by the action of closing the door. It is possible that the door is not locked in place when the lock wash gate 42 is manually closed. At this time, whether the door is locked in place can be detected by the magnet and the Hall sensor.

In the door lock device described in embodiments 1 and 2, the door hook 1 and the locking portion 4 are provided, when the locking portion 4 is unlocked, the rotatable locking portion 4 will exert a force on the door hook 1, and therefore the door fixedly connected with the door hook 1 will not stay at the locked position under the driving action of the door hook 1, the corresponding magnet is not located at the preset position, and the hall sensor cannot detect the magnet.

The door lock detection module provided in this embodiment can accurately determine the state of the door lock by detecting the position of the positioning rod 22, and the door lock detection module further includes a locking detection device for detecting whether the machine door is accurately locked. Namely, the door lock detection module provided by the embodiment can comprehensively detect the locking process, the unlocking process and the positioning process of the machine door.

Example 5

The present embodiment provides a washing machine based on the above embodiments. The washing machine includes a positioning unlocking module 41 as described in embodiment 3, a door lock module 40 as described in embodiment 1 or embodiment 2. As shown in fig. 7, a positioning unlocking module 41 is provided at a position opposite to the door lock module 40, and the positioning unlocking module 41 is in contact with the door lock module 40 to complete unlocking of the door. Specifically, the door opening rod 23 of the positioning unlocking module 41 is opposite to the limiting block 2 extending to the outside of the shell 3 from the door locking module 40, and the door opening rod 23 is excited to drive the limiting block 2 to perform unlocking motion when automatically performing motion in the unlocking stage, so that unlocking of the machine door is completed.

It should be noted that the installation position and structure of the door opening lever 23 in the positioning and unlocking module 41 can be adjusted, so that the movement direction of the door opening lever 23 can be adjusted. As shown in the figure, the movement direction of the door opening lever 23 of the present embodiment coincides with the axial direction of the stopper 2, that is, the door opening lever 23 pushes the excitation stopper 2 in the axial direction of the stopper 2. The positioning unlocking module 41 can be further adjusted to move the door opening rod 23 along the direction perpendicular to the axial direction of the limiting block 2, namely, the door opening rod 23 pushes the limiting block 2 from the side surface of the limiting block 2 to excite the limiting block 2, other structures are kept unchanged, and the door can be unlocked as well.

As shown in fig. 8, the washing machine has a washing tub, a washing tub door 42 is provided on the washing tub, and the washing tub door 42 needs to rotate together with the washing tub, so as previously described, the washing tub door 42 cannot be automatically closed by an electric signal control. The door lock module 40 as described in embodiments 1 and 2 may be provided on the wash tub door 42 so that locking of the wash tub door 42 can be achieved by the action of closing the wash tub door 42. Accordingly, the positioning and unlocking module 41 may be fixed to the tub and/or the washing machine housing at a position opposite to the door lock module 40.

In the washing machine, the outer tub is often required to be provided with an outer tub front flange at the position of the machine door, the door lock module 40 is fixed on the washing tub door 42, and the positioning unlocking module 41 is fixed on the outer tub, so that the door opening rod 23 must pass through the outer tub front flange in order to make the door opening rod 23 contact with the stopper 2. An unlocking hole through which the door opening lever 23 passes is provided on the outer tub front flange, and since water may contact at the outer tub front flange, a sealing member is preferably provided at the unlocking hole in order to secure sealability.

The washing machine provided in this embodiment further includes a washing machine door lock detection module as described in embodiment 5, where the door lock detection module may detect the locking condition of the door lock module 40 to the machine door, and may also detect the unlocking and positioning condition of the positioning and unlocking module 41 to the machine door.

Example 6

The present embodiment provides a control method of a washing machine in which a tub door 42 is provided on a tub to be rotated together with the tub during washing; and the door lock module 40 as described in embodiments 1 and 2 is provided on the wash tub door 42. The washing drum is correspondingly provided with a washing drum door 42, and the outer drum and/or the outer shell of the washing machine is correspondingly provided with a washing machine door 43 at the position corresponding to the washing drum door 42, and the washing drum door 42 and the washing machine door 43 can be independently opened and closed. This embodiment is particularly suitable for a washing machine having only a single tub inside. The control method of the washing machine provided by the embodiment reasonably sets the operations to be executed by the washing drum door 42 and the washing machine door 43 when the door is opened and closed, and ensures the normal operation of opening and closing the double-layer door.

When the double-layer door of the washing machine needs to be opened and closed, the washing machine is ensured to be in a stop operation and locked state, so that the danger of clothes and liquid flowing out caused by opening the door in the operation process of the washing machine or entering the operation state when the door is closed by the washing machine is avoided. The control method of the present embodiment includes detecting whether the washing machine is stopped before opening and closing the double-layered door. When the washing machine stops operating, the washing tub should be locked. And after the operation of opening and closing the door is performed, the washing machine needs to perform other processes such as a washing process, and the washing drum should start the next operation from the set locking position, so it should be detected whether the washing drum is locked at the preset locking position at the same time. Whether the washing drum is locked or not can be detected by a detection device provided on the washing drum.

Specifically, when it is required to open the washing tub door, the positioning unlocking module 40 is controlled to lock the washing tub at a set position, that is, the positioning lever 22 in the positioning unlocking module 40 is controlled to perform the movement of the positioning stage as described in embodiment 3, and then the operation of opening the washing tub door is allowed.

After the positioning unlocking module 40 locks the washing tub at the set position, the door lock detecting module detects whether the positioning unlocking module 40 completes locking the washing tub at the set position, specifically, the door lock detecting module detects the position of the positioning lever 22 as described in embodiment 4, and judges whether the positioning lever 22 protrudes into the positioning hole to complete locking the washing tub at the preset position.

After the washing drum is locked at the set position, the positioning unlocking module 41 is controlled to unlock the door locking module 40, and the door lock detection module detects that the positioning unlocking module 41 allows the washing drum door to be opened after unlocking is completed. Specifically, when the lock module 40 is unlocked by the lock module 41, the lock lever 22 in the lock module 41 is controlled to complete the movement of the unlock stage as described in embodiment 3. When the door lock detection module detects whether unlocking is completed, the door lock detection module judges whether unlocking is completed by detecting the position of the positioning lever 22 as described in embodiment 4.

When the washing drum door is opened and clothes are put into the washing drum door, the control door lock detection module detects whether the positioning unlocking module 41 still keeps locking the washing drum at the set position or not, and allows the washing drum door to be closed after the positioning unlocking module 41 still keeps locking the washing drum at the set position. At this time, the door lock detection module is required to detect the specific position of the positioning rod 22, and determine whether the positioning rod 22 is extended into the positioning hole, so as to determine whether the washing drum is locked at the preset position.

When the door is closed, the door lock module 40 is controlled to lock the washing drum door, and the door lock detection module detects whether the washing drum door is locked, specifically, the door lock module 40 can lock the washing drum door through the action of closing the door as described in embodiments 1 and 2. The door lock detection module can realize detection of whether the wash-drum door is locked or not by using the lock detection device as described in embodiment 4.

After confirming that the washing drum door is locked, controlling the positioning unlocking module 41 to release the restriction of the washing drum to be locked at the set position; the motor 24 in the positioning and unlocking module 41 is reversed to drive the positioning rod 22 to extend out of the positioning hole, and the locking restriction on the washing drum is released as described in embodiment 3. The door lock detection module is then controlled to detect whether the positioning unlocking module 41 releases the restriction of locking the washing drum at the set position. Specifically, the door lock detection module detects the position of the positioning rod 22, and determines that the contact limits the locking of the washing drum at the set position when the positioning rod 22 extends out of the positioning hole. The washing machine is allowed to operate after confirming that the restriction of the locking of the washing tub at the set position is released, so that the washing tub can be rotated to achieve the operation thereafter.

The washing machine typically has a wash tub door 42 on the inner tub and a washing machine door 43 on the outer tub and/or the outer housing. In the actual opening process of the door, the washing machine door 43 and the washing drum door 42 are sequentially opened, and the washing drum door 42 can be controlled to keep locked when the washing machine door 43 is opened, so that the collision of the inner and outer double-layer doors caused by the movement of the washing drum door 42 in the opening process of the washing machine door 43 is avoided. When the door opening operation is actually performed, the washing tub door 42 is controlled to be locked first, and after the successful locking of the washing tub door 42 is detected, the washing tub door 43 is controlled to be unlocked, and the operation of opening the washing tub door 43 can be performed. The washing machine door 43 is then opened, and the washing machine door 42 is controlled to be unlocked when the washing machine door 42 needs to be opened, and the washing machine door 42 can be opened. The specific control method comprises the following steps: after detecting that the washing machine door 43 is opened, the washing tub door 42 is controlled to be unlocked.

As can be seen from the above embodiments, since the door lock module 40 and the positioning and unlocking module 41 can be provided on the washing drum door 42, the washing drum door 42 can be locked and unlocked when the washing drum is locked at the preset position; i.e. the washing drum door 42 can be kept locked during the opening of the washing machine door 43, and unlocked after the opening of the washing machine door 43.

As shown in particular in fig. 10, the operation of opening the door comprises the steps of:

step S1, detecting whether the washing cylinder is locked at a preset position, executing step S2 if the washing cylinder is unlocked at the preset position, and executing step S3 if the washing cylinder is locked at the preset position;

step S2, controlling the washing cylinder to be locked at a preset position and executing step S3;

step S3, controlling the locking of the washing drum door 42, and executing step S4 after detecting that the washing drum door 42 is successfully locked;

step S4, controlling the washing machine door 43 to unlock and executing step S5;

step S5, detecting whether the washing machine door 43 is opened, executing step S6 when the washing machine door 43 is not opened, and executing step S7 when the washing machine door 43 is opened;

step S6, opening the washing machine door 43, and executing step S7;

step S7, the washing drum door 42 is controlled to be unlocked, and the washing drum door 42 is opened.

The operation of opening the double door is generally performed to take out the laundry in the washing machine, and the use of the washing machine is often ended after the laundry is taken out. The washing machine is not required to be used until laundry is again put into the washing machine and the door is closed. In the period that the washing machine is not used, the washing cylinder is locked at a preset locking position, so that when the washing machine needs to be operated again, the washing cylinder can start to operate from the preset locking position, and the normal operation of a washing program of the washing machine is facilitated. The washing cylinder is kept locked at a preset locking position after the operation of opening the double-layer machine door is completed and before the operation of closing the double-layer machine door is performed.

When the door closing operation is performed, the washing tub door 42 and the washing machine door 43 are sequentially closed, the washing tub door 42 should be locked after the washing tub door 42 is closed, and whether the washing tub door 42 is locked at a preset position is detected. As can be seen from the door lock module 40 provided on the washing drum door 42 in the above embodiment, once the washing drum door 42 is properly closed, the washing drum door 42 can be locked by the door lock module 40. And it is also possible to detect whether the wash bowl door 42 is closed and locked in the correct position by the magnets provided on the wash bowl door 42 as described earlier. That is, the control method described above can ensure that the wash bowl door 42 is properly closed when the wash bowl door 42 is closed by detecting whether the wash bowl door 42 is locked at a preset position. The control method provided in this embodiment is reasonable in arrangement, and is capable of locking after the washing drum door 42 is closed, so that it is ensured that the washing drum door 42 is not affected when the washing machine door 43 is closed afterwards. And the closing operation of the washing machine door 43 can be performed after confirming that the washing machine door 42 is locked at a preset locking position, ensuring that the washing machine door 43 is closed after the washing machine door 42 is accurately closed. The procedure of locking the washing machine door 43 after closing the washing machine door 43 can avoid the situation that the washing machine door is repeatedly closed when the washing drum door 42 is not correctly locked during closing the washing machine door.

After the inner and outer double-layer doors of the washing machine are correctly closed and locked, the washing machine can start other operations such as subsequent washing. The washing machine needs to perform the desired movement of the washing tub when performing the subsequent operation, and thus, the operation of unlocking the washing tub is required. And the inner and outer double-layer doors should keep the locked state after being closed, so as to prevent the normal operation of the washing machine from being influenced by the condition that the washing machine door 43 is opened during the operation process of the washing machine. As can be seen from the description of the positioning and unlocking module 41 in the above embodiment, the positioning and unlocking module 41 can be used to lock and unlock the washing drum, that is, the locking of the washing drum door 42 and the unlocking of the washing drum mentioned in the control method can be achieved.

As shown in fig. 11 in particular, the operation of closing the door comprises the following steps:

step S3, closing and locking the washing drum door 42, detecting whether the washing drum door 42 is locked at a preset locking position, executing step S4 when the washing drum door 42 is unlocked at the preset locking position, and executing step S5 when the washing drum door is locked at the preset locking position;

Step S4, controlling the washing drum door 42 to be locked at a preset locking position and executing step S5;

step S5, closing and locking the washing machine door 43, detecting whether the washing machine door 43 is successfully locked, and executing step S6 after the washing machine door 43 is successfully locked;

and S6, controlling the washing cylinder to be unlocked.

The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.

Claims

1. A positioning and unlocking module of a washing machine is characterized by comprising a shell (21),

a positioning rod (22) is arranged in the shell (21), and the positioning rod (22) can extend out of the shell (21) and correspondingly extend into positioning holes arranged on the washing cylinder and/or the machine door;

A door opening rod (23) is arranged in the shell (21), and the door opening rod (23) can extend out of the shell (21) to excite unlocking;

after the positioning rod (22) generates a first movement stroke extending into the positioning hole and then extends out of the second movement stroke, the door opening rod (23) can be driven to extend out of the shell (21) through the transfer transmission structure;

the transfer transmission structure comprises a first rack (32) which is arranged on the positioning rod (22) and extends along the movement direction of the positioning rod, and a third rack (30) which is arranged on the door opening rod (23) and extends along the movement direction of the door opening rod;

a first meshing surface and a second meshing surface are arranged on the fourth gear module (33), and the first meshing surface is in meshing connection with a third rack (30) in the first movement stroke and the second movement stroke;

the second engagement surface is separated from the first rack (32) in the first movement stroke and is engaged with the first rack (32) in the second movement stroke.

2. The positioning and unlocking module of the washing machine according to claim 1, wherein the movement directions of the positioning rod (22) and the door opening rod (23) which extend outwards are perpendicular to each other, and the first rack (32) and the third rack (30) are perpendicular to each other.

3. A washing machine positioning and unlocking module according to claim 2, characterized in that the positioning rod (22) extends vertically downwards outside the housing (21), the first rack (32) extending in a vertical direction;

The door opening rod (23) extends out of the shell (21) along the horizontal direction, and the third rack (30) extends along the horizontal direction;

the fourth gear module (33) is disposed above the third rack (30), below the first rack (32) in position in the first movement stroke, and the first rack (32) is disposed to the left or right of the fourth gear module (34).

4. A washing machine positioning and unlocking module according to claim 3, characterized in that a second rack (29) for driving the positioning rod (22) to move downwards along the vertical direction is fixed on the positioning rod, and the second rack (29) is arranged in parallel with the first rack (32);

the second rack (29) is connected with the second gear module (27) in a meshed mode, and the second gear module (27) is connected with a power assembly for driving movement in a meshed mode.

5. A positioning and unlocking module for a washing machine according to claim 4, characterized in that the power assembly comprises a motor (24), an output gear (25) is sleeved on an output shaft of the motor (24), the output gear (25) is in meshed connection with a reduction gear set, and a final output gear of the reduction gear set is meshed with a second gear module (27).

6. A positioning and unlocking module for a washing machine according to claim 5, characterized in that a third gear module (27) is arranged between the second gear module (27) and the third rack (30),

The third gear module (27) is respectively meshed with the second gear module (27) and the third rack (30).

7. A washing machine positioning and unlocking module according to claim 6, characterized in that the rotation axis of the second gear module (27) is arranged parallel to the rotation axis of the motor (24),

the second gear module (27) has a vertical center plane passing through the rotation axis, the reduction gear set and the third gear module (27) are arranged on the same side relative to the vertical center plane,

a locating lever (22) is disposed on the other side relative to the vertical center plane.

8. A washing machine positioning and unlocking module according to any one of claims 4-7, characterized in that a running block (28) is fixed on the positioning rod (22), a first rack (32) and a second rack (29) are arranged on the running block (28), and the bottom end surfaces of the first rack (32) and the second rack (29) are flush with the bottom end surface of the running block (28).

9. A washing machine positioning and unlocking module according to claim 8, characterized in that the second rack (29) has a length greater than the length of the first rack (32).

10. A washing machine positioning and unlocking module according to claim 9, characterized in that the length of the second rack (29) is equal to the total length of the positioning rod (22) extending outwards in the first and second movement strokes, and the length of the first rack (32) is equal to the length of the door opening rod (23) extending outwards in the second movement stroke.

11. A positioning and unlocking module for a washing machine according to any one of claims 6 to 7, characterized in that the horizontal distance between the rotation axis of the fourth gear module (33) and the rotation axis of the third gear module (31) is L1, L1 being smaller than the total length of the door opening lever (23) extending outwards in the first and second operation strokes.

12. A washing machine positioning and unlocking module according to claim 11, characterized in that the vertical distance between the rotation axis of the second gear module (27) and the rotation axis of the fourth gear module (33) is set to L2, L2 being equal to the length of the positioning rod (22) protruding outwards in the first running stroke.