CN109505097B

CN109505097B - Washing machine locking device and washing machine

Info

Publication number: CN109505097B
Application number: CN201910051464.8A
Authority: CN
Inventors: 王立孟
Original assignee: Wenzhou Tianjian Electric Co ltd
Current assignee: Wenzhou Tianjian Electric Co ltd
Priority date: 2019-01-18
Filing date: 2019-01-18
Publication date: 2021-01-26
Anticipated expiration: 2039-01-18
Also published as: CN109505097A

Abstract

The invention provides a locking device of a washing machine and the washing machine, comprising a middle bracket, wherein one end of the middle bracket is rotatably arranged on a mounting base around an axis parallel to a first axis, and the other end of the middle bracket can overcome the elastic force to incline to a second set position towards one side close to a door hook under the action of external force; the mounting base is further provided with an unlocking column which is abutted against the lock catch to be separated from the lock groove to be matched with the lock groove when the middle support moves to a second set position. By the design, certain force can be inwards pushed in the inner barrel of the washing machine, the locking cam is driven to be pulled towards the door hook when thrust is generated, the unlocking column is abutted against the lock catch to be separated from the locking position of the locking groove, and the door plate is opened. The door plate can be opened without depending on pressing or electromagnetic control of the door plate, and the inward opening door can be realized to deal with the inward opening door in a special state, for example, when a child mistakenly enters the washing machine, the inward pushing door plate can be opened without external operation, and the overall safety is improved.

Description

Washing machine locking device and washing machine

Technical Field

The invention relates to the technical field of household appliances, in particular to a locking device of a washing machine and the washing machine.

Background

The door lock of the washing machine plays an important role in the washing machine, and when the washing machine works normally, the door lock of the washing machine is required to be connected with the washing machine main body so as to prevent the door panel from being opened randomly when the washing machine works, so that not only can external sundries possibly fall into the washing machine to damage the washing machine, but also can bring danger to people who touch the main body part in the washing machine carelessly; for the drum washing machine which is widely used day by day, the door lock of the washing machine is more important, if the door plate of the washing machine can not be locked when the washing machine works for washing clothes normally, washing water can splash and clothes can fly out of a washing space, so that the product quality and safety of the washing machine are seriously affected, and great inconvenience is brought to normal use.

In the prior art, the patent with the publication number of CN107245845A invention provides a washing machine door lock, which comprises a door hook, a lock case, a rotating member reset elastic member, a lock catch, a locking matching structure and a lock catch unlocking structure, wherein when the door is closed, the door hook is inserted into the lock case, the rotating member is driven by the door hook, the locking matching structure guides the lock catch to move from a lock catch reset position to a lock catch locking position, and the lock catch is blocked on a rotating path of the rotating member, so that the washing machine door is locked; after washing is finished, the electromagnetic driving part drives the lock catch to continue moving towards the direction far away from the reset position of the lock catch through the lock catch unlocking structure, so that the lock catch is not blocked on the rotation path of the rotating part any more, the rotating part rotates under the action of the rotating part reset elastic part, the door hook is popped out from the lock shell, and the washing machine door is unlocked.

The above patent opens and closes the door by pressing the door panel and electromagnetically controlling the door, so that a handle for sliding the door is not provided outside the door panel. However, the unlocking of the lock catch and the rotating part depends on the pressing or electromagnetic control of the door panel, and the inward opening door in a special state cannot be responded, for example, when a child mistakenly enters the washing machine, the door panel can be opened only by external operation, and certain potential safety hazards are caused.

Disclosure of Invention

Therefore, the technical problem to be solved by the present invention is to overcome the defect that unlocking of the lock catch and the rotating member in the locking device of the washing machine in the prior art depends on pressing or electromagnetic control of the door panel, and cannot cope with the inward opening door in a special state, so as to provide a locking device of the washing machine and the washing machine.

The invention provides a washing machine locking device which is matched with a door hook arranged on a door panel of a washing machine, wherein the door hook comprises a first lock tongue with a through locking hole, and the first lock tongue enters and exits the locking device along a lock tongue matching direction;

the method comprises the following steps:

a mounting base mounted with a middle bracket;

the locking cam is rotatably arranged on the middle bracket around a first axis perpendicular to the locking tongue matching direction; the locking mechanism comprises a first shaft, a second shaft, a first locking tongue, a second locking tongue, a guide inclined plane and a locking groove, wherein the first shaft is provided with a first bulge which is pushed by the first locking tongue to rotate in a forward direction around the first shaft; a cam elastic piece is arranged between the locking cam and the middle bracket, and under the action of the cam elastic piece, the locking cam reversely rotates to an initial cam position to pop out the first lock tongue;

the lock catch is arranged on the middle bracket in a manner of swinging around the direction vertical to the first axis and is provided with a buckle matched with the locking groove; a locking elastic piece is arranged between the lock catch and the mounting base, and under the action of the locking elastic piece, the lock catch is pressed against the guide inclined plane and enters the locking groove when the locking cam moves to the first set position so as to limit the rotation of the locking cam;

a bracket elastic part is arranged between the middle bracket and the mounting base; one end of the middle bracket is rotatably arranged on the mounting base around an axis parallel to the first axis, and the other end of the middle bracket can overcome the elastic force action of the bracket elastic piece under the action of external force to incline to a second set position towards one side close to the door hook; the mounting base is further provided with an unlocking column which is abutted against the lock catch to be separated from the locking groove to be matched with the locking groove when the middle support moves to the second set position.

Optionally, the middle bracket is a hollow frame structure corresponding to the lock catch position; the mounting base is further provided with an unlocking column which abuts against the lock catch through the frame structure when the middle support moves to the second set position.

Optionally, the coil assembly comprises a mounting base mounted on the mounting base, a first coil assembly arranged on the mounting base, and a power-off ejector rod for controlling the on-off of a current loop of the first coil assembly; the power-off ejector rod is arranged on the mounting seat in a sliding manner, and an ejector rod elastic piece is arranged between the power-off ejector rod and the mounting seat; under the action of the ejector rod elastic piece, the power-off ejector rod is in a position for controlling the current loop to be disconnected; the locking device of the washing machine comprises a locking rod which can be rotatably arranged on the mounting base around an axis parallel to the matching direction of the lock tongue and a locking rod elastic piece arranged between the mounting base and the locking rod; under the action of the locking rod elastic piece, the locking rod moves to a third set position; at the third setting position, the locking rod drives the power-off ejector rod to overcome the elastic force of the ejector rod elastic piece to move to a position for controlling the conduction of the current loop; the locking cam is provided with a third bulge which drives the locking rod to move to a locking rod initial position in the process of reversely rotating to the cam initial position under the action of the cam elastic piece, and the third bulge blocks the locking rod from rotating under the action of the locking rod elastic piece; the third projection is in a position that restricts movement of the lock lever when the lock cam is moved to the first set position.

Optionally, the coil assembly comprises a peach core sliding block and a limiting block, the peach core sliding block is slidably mounted on the mounting seat, a peach core elastic piece for driving the peach core sliding block to slide forward to an initial position is arranged between the peach core sliding block and the mounting seat, and the first coil assembly is provided with a first coil iron core for driving the peach core sliding block to move reversely to a locking position after being electrified; the limiting block is mounted on the mounting seat in a sliding mode along the direction close to and far away from one side of the locking rod; a first chute and a first sliding column which drive the limiting block to slide in the sliding process of the peach core sliding block are arranged between the peach core sliding block and the limiting block; the limiting block moves to a position for blocking the locking rod from rotating when the peach-core slider moves to the locking position.

Optionally, the peach-heart slider has a trigger structure which slides to the locking position to trigger the door lock signal contact.

Optionally, the mounting base further comprises an unlocking pull rod and a pull rod elastic piece arranged between the mounting base and the unlocking pull rod; the unlocking pull rod comprises a driving section and an acting section, wherein the driving section is positioned in the area between the mounting seat and the mounting base, and the acting section extends into the area between the lock catch and the middle bracket; the driving section is provided with a driving plane and a driving inclined plane which are connected; a sliding rail structure in sliding fit with the unlocking pull rod is arranged on the middle bracket; the action section is provided with a pull rod inclined plane which drives the lock catch to be away from the matching position with the locking groove in a forward sliding mode through the unlocking pull rod; the unlocking pull rod moves to a position where the inclined surface of the pull rod has no effect on the lock catch under the effect of the pull rod elastic piece; the peach-core sliding block is provided with an unlocking key and a key elastic piece positioned between the unlocking key and the peach-core sliding block; and in the reverse sliding process of the peach-core sliding block, the driving plane moves to the driving inclined plane and drives the unlocking pull rod to slide in the forward direction.

Optionally, the unlocking handle is provided with a handle contact which pushes the peach core sliding block to slide to an initial position, and a limiting inclined plane which is used for driving the handle contact to be separated from a matching position of the peach core sliding block after the handle contact pushes the peach core sliding block to move to the initial position is further arranged on the mounting seat.

The invention also provides a washing machine, which comprises the washing machine locking device.

The technical scheme of the invention has the following advantages:

the invention provides a washing machine locking device, which can push a certain force in an inner barrel of a washing machine after a door panel of the washing machine is closed, when thrust is generated, a first lock tongue of a door hook is pulled outwards, and simultaneously, a locking cam is driven to pull towards the direction of the door hook, the locking cam pulls a middle support, the other end of the middle support tilts to a second set position along with the outward pulling of the door hook, a lock catch abuts against an unlocking column while tilting, the unlocking column abuts against the lock catch to be separated from a locking position of a locking groove, and the locking cam reversely rotates to an initial position of the cam to pop out the first lock tongue under the action of a cam elastic piece, so that the door panel is opened. The middle bracket is restored to the initial position under the action of the bracket elastic piece, and simultaneously drives the locking cam to reset. Due to the design, the door plate can be opened without completely depending on pressing or electromagnetic control of the door plate, the inward opening door can be realized, the inward opening door can be opened under a special state, for example, when a child mistakenly enters the washing machine, the inward pushing door plate can be opened without external operation, and the overall safety is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of a locking device of a washing machine according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a mounting base according to an embodiment of the present invention;

FIG. 3 is a first schematic structural diagram of a door hook according to an embodiment of the present invention;

fig. 4 is a second structural schematic view of a door hook according to an embodiment of the present invention;

fig. 5 is a partial exploded view of a locking device of a washing machine according to an embodiment of the present invention;

FIG. 6 is a partial exploded view of a locking device of a washing machine according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a first locking device according to an embodiment of the present invention;

FIG. 8 is a first schematic diagram of the operation of the locking lever of FIG. 7;

FIG. 9 is a second operational schematic diagram of the locking bar of FIG. 7;

FIG. 10 is a first schematic view of the release lever of FIG. 7;

FIG. 11 is a second operational schematic diagram of the release lever of FIG. 7;

FIG. 12 is a functional schematic of the unlocking post of the first locking device;

FIG. 13 is a schematic view of the release handle of the first locking device;

FIG. 14 is a schematic structural diagram of a second locking device provided in accordance with an embodiment of the present invention;

FIG. 15 is a schematic view of the telescoping arrangement of the second locking device;

FIG. 16 is a schematic view of the unlocking ramp and the unlocking protrusion of the second locking device;

fig. 17 is a schematic view of the engagement of the door hook and the locking device provided by the present invention.

Description of reference numerals:

1-mounting seat, 2-unlocking key, 3-key elastic piece, 4-peach core sliding block, 5-limiting block, 6-peach core sliding block snap spring, 7-power-off ejector rod, 8-ejector rod elastic piece, 9-4 PIN component, 10-peach core elastic piece, 11-first coil iron core, 12-connecting spring, 13-second coil component, 14-first coil component, 15-second coil iron core, 16-encloser, 17-pull rod elastic piece, 18-unlocking pull rod, 19-mounting base, 191-first lock tongue opening, 192-second lock tongue opening, 20-locking rod elastic piece, 21-lock catch elastic piece, 22-lock catch, 23-locking cam, 231-first bulge, 232-second bulge, 233-guide boss, 234-lock catch, 24-cam elastic piece, 25-locking rod, 251-ejector rod boss, 26-bracket stud, 27-cam positioning rod, 28-cam positioning rod snap spring, 28-cam positioning rod, 29-middle support, 30-support elastic piece, 31-positioning rod elastic piece, 32-positioning rod, 33-seat cover, 34-middle rod elastic piece, 35-telescopic middle rod, 36-telescopic main rod, 37-main rod elastic piece, 38-door hook, 381-first lock tongue, 382-locking hole, 383-second lock tongue, 384-first locking protrusion, 385-supporting boss, 386-mounting body, 39-unlocking handle, 40-handle contact, 41-limiting inclined plane, 42-matching structure, 43-unlocking protrusion, 44-unlocking inclined plane and 45-unlocking column.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 to 17 show an embodiment of a door lock of a washing machine according to the present invention.

The washing machine door lock includes a door hook 38 and a locking device. The door hook 38 is mounted on the door panel of the washing machine, and is used for locking and unlocking the door panel of the washing machine through cooperation with the locking device. The locking device comprises a first locking device and a second locking device. Accordingly, the door hook 38 includes a first locking tongue 381 and a second locking tongue 383 which cooperate with the first locking means and the second locking means, respectively. The directions in which the first locking tongue 381 and the second locking tongue 383 move into and out of the first locking device and the second locking device are referred to as a locking tongue fitting direction (arrow direction in fig. 17). Specifically, referring to fig. 3 and 4, the door hook 38 includes a mounting body 386, and a first locking tongue 381 and a second locking tongue 383 that extend in parallel on the mounting body 386, and the door hook 38 body is a plate-shaped structure that is engaged with the door panel of the washing machine. In this embodiment, the first locking device and the second locking device are arranged vertically. Obviously, both can be arranged horizontally, can be arranged obliquely with respect to each other, and can also be arranged circumferentially in correspondence with the washing machine inlet. Accordingly, the first locking tongue 381 and the second locking tongue 383 may correspond to the positions of the first locking device and the second locking device.

The first lock tongue 381 is a flat plate-shaped structure with a wide surface, in this embodiment, the wide surface is perpendicular to the plane where the first lock tongue 381 and the second lock tongue 383 are located, and a through lock hole 382 is formed in the wide surface of the plate-shaped structure near the end position. The second locking tongue 383 is of a cylindrical structure, and a plurality of first locking protrusions 384 are arranged on the periphery of the tail end of the second locking tongue 383 at intervals around a cylindrical central axis. The length of the middle plate from the end of the first locking tongue 381 is less than the length of the middle plate from the first locking protrusion 384, so as to implement the two-stage functional working principle of the washing machine.

Referring to fig. 2 to 13 and 17, the first locking device includes a housing, an intermediate bracket 29, a locking cam 23 and a latch 22. The shell is an installation base of the first locking device and provides a corresponding installation structure for other parts; which corresponds to the first locking means and is further opened in a first tongue opening 191 allowing the first tongue 381 to enter. The housing includes a mounting base 19, an intermediate housing provided to the mounting base 19, and a seat cover 33. The mounting base 19 is disposed adjacent to one side of the door hook 38, and the intermediate housing and the seat cover 33 are disposed on the other side of the mounting base 19. The first latch opening 191 is provided in the mounting base 19. The mounting base 19 and the seat cover 33 form a mounting space surrounding the first locking means and the intermediate housing.

The locking cam 23 is rotatably mounted to the intermediate bracket 29 by a cam stud 27, and the central axis of the cam stud 27, i.e. the rotational axis of the locking cam 23, is a first axis perpendicular to the latch bolt engaging direction. The locking cam 23 has a first protrusion 231, a second protrusion 232, a guide boss 233, and a locking groove 234 around the first axis. The first projection 231 is pushed by the end of the first lock tongue 381 to drive the lock cam 23 to rotate around the first axis in the positive direction; when the second protrusion 232 positively rotates to the first setting position along with the locking cam 23, it turns over into the locking hole 382 of the first locking tongue 381, so as to lock the first locking tongue 381. The guide projection 233 is extended around the first axis and has a guide slope at one side. The guide projection 233 is provided with a locking groove 234 at a position corresponding to the end of the guide slope. A cam elastic member 24 is provided between the locking cam 23 and the mounting base 19. Under the action of the cam elastic member 24, the lock cam 23 reversely rotates to the cam initial position to eject the first latch 381.

It should be noted that the forward and reverse directions are only used to indicate that the two movements are different in direction, i.e. relative, and do not indicate a specific or definite direction of movement.

The intermediate bracket 29 is disposed in the mounting space, and the lock 22 is swingably mounted to the intermediate bracket 29 about a second axis perpendicular to the first axis, and has a catch engaging with the locking groove 234 toward the locking cam 23. In this embodiment, the second axis is parallel with spring bolt cooperation direction, but in other implementation modes, also can be not parallel to spring bolt cooperation direction, the buckle can swing on first axis direction can. A locking elastic member 21 is disposed between the locking device 22 and the middle bracket 29, and the locking device is pressed against one side of the guiding inclined surface of the guiding protrusion 233 by the locking elastic member 21, moves to the end of the guiding inclined surface when the locking cam 23 moves to the first setting position, and enters the locking groove 234 by the pulling of the locking elastic member 21. The catch cooperates with the locking groove 234 to limit rotation of the locking cam 23 about the first axis.

The intermediate bracket 29 is a frame structure with one end rotatably mounted to the mounting base 19 by bracket studs 26 about an axis parallel to the first axis. A bracket elastic member 30 is provided between the intermediate bracket 29 and the mounting base 19, and the intermediate bracket 29 is located at a bracket initial position by an elastic force of the bracket elastic member 30. The intermediate bracket 29 pivots against the elastic force of the bracket elastic member 30 by the external force, and the other end of the intermediate bracket 29 is inclined outward to the second set position. The middle bracket 29 is a hollow frame structure corresponding to the position of the lock catch 22, and the mounting base 19 is provided with an unlocking column 45 which is pressed against the lock catch 22 through the hollow area to drive the lock catch 22 to be disengaged from the locking groove 234 when the middle bracket 29 moves to the second setting position.

The first locking device further comprises a locking rod 25, a peach-core slide block 4, a limiting block 5, an unlocking pull rod 18, a power-off push rod 7 and a first coil assembly 14. The middle housing comprises a mounting base 1 arranged close to a mounting base 19 and a cover 16 fastened to the mounting base 1. The cover shell 16 and the mounting base 1 are matched to form a shell space which surrounds the peach-core sliding block 4, the limiting block 5, the power-off mandril 7 and the first coil component 14.

The first coil assembly 14 includes a first assembly body and a first coil core 11. The first assembly body is arranged on the mounting base 1, and the first coil iron core 11 is driven to move after the first assembly body is electrified. The power-off mandril 7 is used for controlling the on-off of a current loop in the first component body. The power-off ejector rod 7 is slidably mounted on the mounting seat 1, and an ejector rod elastic piece 8 is arranged between the power-off ejector rod 7 and the mounting seat 1. Under the action of the elastic force of the ejector rod elastic piece 8, the power-off ejector rod 7 protrudes out of the mounting base 1 and is positioned at the current loop disconnection position of the first assembly body. A connecting spring 12 is further arranged between the power-off mandril 7 and the mounting base 1, so that the power-off mandril 7 is more stable in the motion process.

The locking lever 25 is rotatably mounted to the mounting base 19 about an axis parallel to the latch engagement direction, and has an action portion corresponding to the locking cam 23 and a jack boss 251 that drives the power-off jack 7. Referring to fig. 8 and 9, a locking rod elastic member 20 is disposed between the locking rod 25 and the mounting base 19, the locking rod 25 moves to a third setting position under the action of the locking rod elastic member 20, and the power-off plunger 7 is driven to move relative to the mounting base 1 to a position for controlling the conduction of the current loop of the first coil assembly 14 against the elastic force of the plunger elastic member 8 when the plunger boss 251 moves to the third setting position along with the locking rod 25. The first coil assembly 14 may be normally energized for operation.

The lock cam 23 has a third projection with respect to the first axis, which avoids the rotation space of the lock lever 25 when in the first set position to allow the lock lever 25 to rotate freely. When the lock cam 23 is reversely rotated from the first set position to the cam initial position, the third projection acts on the acting portion of the lock lever 25 to drive the lock lever 25 to pivot to the lock lever 25 initial position against the elastic force of the lock lever elastic member 20. In this embodiment, the third protrusion and the second protrusion 232 are the same structure. In other embodiments, the first protrusion 231 and the third protrusion may be separately and independently provided.

The other side of the mounting seat 1 relative to the locking rod 25 is provided with a peach-heart slide block 4 and a limiting block 5. The peach-shaped core sliding block 4 is arranged on the mounting base 1 in a sliding mode along the direction parallel to the bottom face of the mounting base 1, and a peach-shaped core elastic piece 10 is arranged between the peach-shaped core sliding block and the mounting base 1. Under the action of the elastic force of the peach-shaped core elastic piece 10, the peach-shaped core sliding block 4 slides to the initial position in the positive direction. The stopper 5 is slidably mounted to the mount 1 in a direction toward and away from the side where the lock lever 25 is located. A first chute and a first sliding column which are matched with each other are arranged between the peach core sliding block 4 and the limiting block 5. Under the cooperation of the first chute and the first sliding column, the peach core sliding block 4 drives the limiting block 5 to slide in the sliding process. The peach-heart sliding block 4 is also provided with a triggering structure which triggers the door lock signal contact when the peach-heart sliding block reversely slides to a locking position.

After the first coil assembly 14 is powered on, the first coil iron core 11 drives the peach-shaped sliding block 4 to reversely slide to the locking position against the elastic force of the peach-shaped elastic element 10. The peach-core sliding block 4 drives the limiting block 5 to move towards the side close to the locking rod 25 in the process of sliding towards the locking position, and the protruded mounting base 1 moves to the blocking position for blocking the locking rod 25 from rotating. When the peach core slide block 4 moves to the locking position, the triggering structure triggers the door lock signal contact.

Still be provided with the first limit structure that the accurate definite initial position that is located and latched position of restriction peach core slider 4 slip process between peach core slider 4 and the mount pad 1, first limit structure is including setting up in first limit groove and the peach core slider jump ring 6 of both ends respectively with first limit groove and mount pad 1 complex of peach core slider 4.

Referring to fig. 10 and 11, the unlocking lever 18 comprises a drive section located in the area between the mounting 1 and the mounting base, and an active section extending between the catch 22 and the intermediate support 29. The middle bracket 29 is provided with a slide rail structure which is in slide fit with the unlocking pull rod 18. The swinging of the latch 22 in the latch elastic member 21 is referred to as forward swinging. The sliding of the release lever 18 in the forward direction of the latch 22 is referred to as forward sliding, and the active segment has a lever ramp that pulls the latch 22 forward during forward sliding and lifts the latch 22 away from engagement with the locking slot 234 of the locking cam 23. A pull rod elastic piece 17 is arranged between the unlocking pull rod 18 and the mounting base 19. Under the action of the lever spring 17, the unlocking lever 18 is in a position which has no influence on the catch 22. The driving section has a driving plane and a driving bevel connected to the driving plane.

The peach-heart slider 4 is provided with an unlocking key 2 and a key elastic member 3. The unlocking key 2 is arranged on the peach-core sliding block 4 in a sliding mode, the key elastic piece 3 is arranged between the unlocking key 2 and the peach-core sliding block 4, the unlocking key 2 is abutted to the driving plane through the mounting seat 1 under the action of the key elastic piece 3, and the unlocking key 2 does not affect the unlocking pull rod 18 along with the movement of the peach-core sliding block 4. The unlocking key 2 slides reversely along with the peach-core sliding block 4, is matched with the driving inclined plane under the action of the elastic piece of the unlocking key 2, drives the unlocking pull rod 18 to overcome the elastic force of the unlocking pull rod 18 to slide forwards in the process of continuing reverse movement along with the peach-core sliding block 4, the inclined plane of the pull rod is matched with the lock catch elastic piece 21 to pull the lock catch 22 to swing forwards, and jacks up the lock catch 22 to unlock the matching of the lock catch and the lock groove 234.

Referring to fig. 13, the first locking device further includes an emergency unlocking structure including an unlocking handle 39 provided on the mounting base 19. The unlocking handle 39 extends into the housing space and has a handle contact 40 that pushes the peach-heart slider 4 to slide to an initial position. The peach-core slider 4 is provided with a mating structure 42 that mates with the handle contact 40. The middle shell is also provided with a limit inclined surface 41 which drives the handle contact 40 to be disengaged from the engaging structure 42 after the handle contact 40 pushes the peach core slide block 4 to move to the initial position. So set up, operation unblock handle 39 once more, the unblock contact can be along spacing inclined plane 41 operation, no longer touches peach core slider 4, avoids causing the condition that the lock locks again.

Referring to fig. 3 to 6 and 14 to 17, the second locking device includes a housing, a positioning rod 32, a telescopic main rod 36, a telescopic middle rod 35 and a second coil assembly 13.

The housing is a mounting base of the second locking device, and provides a corresponding mounting structure for other components, and the mounting structure is opened in the second locking bolt opening 192 allowing the second locking bolt 383 to enter corresponding to the second locking device. The housing comprises a mounting base 19, an intermediate housing arranged at the mounting base 19 and a seat cover 33, the mounting base 19 and the seat cover 33 forming a mounting space enclosing the second locking means and the intermediate housing. Mounting base 19 is disposed adjacent to one side of door hook 38, intermediate housing and cover 33 are disposed on the other side of mounting base 19, and second bolt opening 192 is disposed in mounting base 19.

The second coil component 13 includes a second coil body and a second coil body. The second coil body is mounted on the mounting base 1 and drives the second coil iron core 15 to move after being electrified. The positioning rod 32 is rotatably mounted to the mounting base 19 about a third axis parallel to the first axis, and includes a positioning rod 32 body and a driving arm. The positioning rod 32 body is an annular structure with a central axis as a third axis, the driving arm is arranged on the positioning rod 32 body and is provided with a matching structure 42 matched with the second coil iron core 15, and the positioning rod 32 body rotates around the axis under the driving of the second coil iron core 15.

The telescopic main rod 36 is slidably mounted in the main body of the positioning rod 32 along a third axis, and a main rod elastic member 37 is disposed between the telescopic main rod and the positioning rod 32. Specifically, the telescopic main rod 36 is a cylindrical structure coaxial with the positioning rod 32, and the outer periphery of the telescopic main rod is provided with first sliding protrusions extending along a third axis in pairs, and the inner wall of the positioning rod 32 is provided with first sliding grooves matched with the first sliding protrusions. An unlocking inclined plane 44 and an unlocking protrusion 43 are further arranged between the telescopic main rod 36 and the positioning rod 32, and the unlocking inclined plane 44 and the unlocking protrusion 43 are matched to drive the telescopic main rod 36 to rotate when the telescopic main rod 36 overcomes the outward movement process of the main rod elastic piece 37.

The telescopic main rod 36 is a cylindrical structure with a hollow mounting cavity, and the telescopic middle rod 35 and the telescopic main rod 36 are coaxial and are slidably mounted in the mounting cavity of the telescopic main rod 36 along a direction parallel to the third axis. Specifically, the inner wall of the mounting cavity is provided with second sliding protrusions extending along the third axis in pairs, and the periphery of the telescopic middle rod 35 is provided with second sliding grooves matched with the second sliding protrusions. The telescopic main rod 36 and the telescopic middle rod form a sliding telescopic structure. The telescoping center pole 35 may extend through the second bolt opening 192. A blocking structure for limiting the extending distance of the telescopic middle rod 35 is arranged between the telescopic middle rod 35 and the telescopic main rod 36.

The telescopic stem 35 has a locking cavity cooperating with the bolt, the inner wall of which is provided with a second locking projection extending around the axis, opening into a passage slot allowing the first locking projection 384 to pass through. In an initial state, the through groove and the first locking protrusion 384 are arranged, after the first locking protrusion 384 passes through the through groove, the telescopic middle rod 35 rotates, the through groove and the first locking protrusion 384 are staggered, and the first locking protrusion 384 and the second locking protrusion are matched to lock the second lock tongue 383 by the second locking device. As can be seen from the principle of the first locking protrusion 384 cooperating with the second locking protrusion, the same locking effect can be achieved by providing only one first locking protrusion 384.

The positioning rod 32 body has an unlocked position where it is aligned with the first locking projection 384 through the slot during rotation and a locked position where it is misaligned with the first locking projection 384 through the slot. A detent lever spring 31 is also provided between the mounting base 19 and the detent lever 32, and moves through the slot to an unlocked position aligned with the first locking projection 384 upon actuation of the detent lever spring 31.

A second limiting structure for limiting the positioning rod 32 to stop at the unlocking position and the locking position in the rotating process is further arranged between the driving arm and the mounting base 19, and the second limiting structure comprises a second limiting groove arranged on the positioning rod 32 and a positioning rod clamp spring 28, two ends of the positioning rod clamp spring are respectively matched with the second limiting groove and the mounting base 19.

A middle rod elastic piece 34 is also arranged between the telescopic middle rod 35 and the mounting base 19. Under the elastic force of the center pole elastic member 34, the telescopic center pole 35 slides to an end away from the door hook 38, i.e., to a shortest state in the telescopic state.

The telescopic middle rod 35 and the telescopic main rod 36 are collectively called as a locking end, and the telescopic design of the locking end can also be a spiral telescopic mechanism, namely, the length change of the locking end relative to the device body is realized through thread matching.

The root of one side of the first lock tongue 381 facing the second lock tongue 383 is provided with a support boss 385, and the support boss 385 is matched with the edge of the first lock tongue opening 191 to prevent the first lock tongue 381 and the second lock tongue 383 from being misaligned due to the fact that the washing machine door plate hangs down in the using process. The second locking tongue 383 can also be provided with a support protrusion according to actual requirements. For example, an annular boss is provided around the outer circumference of the second locking tongue 383 to engage the second locking tongue opening 192. The support boss 385 of the first latch tongue 381 may also be replaced with a support structure that surrounds the first latch tongue 381.

The locking device of the washing machine also comprises a 4PIN component 9 which can control the two power supplies to be switched on and off simultaneously or respectively.

Description of the working principle of the door lock:

first, door closing principle.

1. The working process of the first locking device;

when the door plate of the washing machine is pressed, the door hook 38 on the door plate enters the locking device along the locking tongue matching direction, the tail end of the first locking tongue 381 of the door hook 38 jacks up the locking cam 23 to turn over in the positive direction, the locking cam 23 turns over in the positive direction, and meanwhile, the lock catch 22 deviates along the guide inclined plane on the locking cam 23. When the locking cam 23 is rotated forward to the first set position, the second projection 232 flips into the locking hole 382, restricting the first latch 381 from moving to lock the door panel. Meanwhile, the latch 22 slides on the guide slope to the end of the guide boss 233, the latch 22 is pulled to one side by the tension spring, the catch on the latch 22 is overlapped in the locking groove 234 of the locking cam 23, the locking cam 23 is pulled, the first latch 381 of the door hook 38 is locked while the locking cam 23 is prevented from rotating, and this state is referred to as a first state of the first locking device.

When the lock cam 23 is rotated to the first set position, the lock cam 23 is in a position that does not affect the movement of the lock lever 25, that is, the restriction of the lock lever 25 is released. The lock lever 25 is moved to the third set position by the biasing force of the spring of the lock lever 25. The ejector rod boss 251 on the locking rod 25 ejects the power-off ejector rod 7, and the current circuit of the first coil assembly 14 is conducted. Meanwhile, the locking rod 25 is in a position which does not limit the movement of the limiting block 5, namely, the limitation on the movement of the limiting block 5 is removed.

In the initial state of non-power-on, the second locking tongue 383 of the door hook 38 freely enters the telescopic middle rod 35 through the slot and is aligned with the first locking protrusion 384, and at the same time, the door panel of the washing machine is locked by the first locking device.

After the door panel of the washing machine is closed, when the door is opened, the door panel of the washing machine is lightly pressed, the first bolt 381 of the door hook 38 on the door panel pushes the locking cam 23 again, so that the locking cam 23 is turned over forward again, the buckle on the lock catch 22 is separated from the position of the locking groove 234 of the locking cam 23, and the buckle is pulled to one side under the action of the tension spring of the lock catch 22 and separated from the locking cam 23. The locking cam 23 reversely turns back to the initial state under the action of the cam torsion spring, the second protrusion 232 on the locking cam 23 no longer locks the first latch 381, and the door hook 38 automatically pops up; meanwhile, the second locking tongue 383 of the door hook 38 also pops up freely, and at the moment, the door panel of the washing machine pops up automatically, and the door of the washing machine is opened. The second projection 232 simultaneously drives the locking lever 25 to move to the locking lever 25 initial position against the locking lever 25 elastic force.

After the door plate of the washing machine is closed, a certain force can be applied to push the door plate inwards in the inner barrel of the washing machine, when thrust is generated, the first lock tongue 381 of the door hook 38 is pulled outwards, the locking cam 23 is driven to be pulled towards the direction of the door hook 38, the locking cam 23 pulls the support through the cam bolt 27 connected with the support, the other end of the middle support 29 tilts to a second set position along with the outward pulling of the door hook 38, the lock catch 22 abuts against the unlocking column 45 while tilting, the buckle of the lock catch 22 is separated from the position of the locking cam 23, the locking cam 23 turns downwards under the action of the cam torsion spring, the first lock tongue 381 of the door hook 38 pops out, the second lock tongue 383 of the door hook 38 also pops out freely, and at the moment, the door plate. The intermediate bracket 29 is restored to the initial position by the bracket elastic member 30, and at the same time, the locking cam 23 is restored. The second projection 232 simultaneously drives the locking lever 25 to move to the locking lever 25 initial position against the locking lever 25 elastic force. Namely the safe design of the inward opening door.

The above are the operating principles of the non-energized state.

When the door plate of the washing machine is pressed, the door hook 38 on the door plate enters the locking device along the matching direction of the lock tongue, then the power supply of the washing machine is started, and the power supply enters the first coil assembly 14. The first coil assembly 14 is electrified to work, so that the peach core sliding block 4 in the door lock reversely moves to the locking position by overcoming the elastic force action of the peach core elastic piece 10, when the peach core sliding block 4 reaches the locking position, the triggering structure triggers a door lock signal contact, and the door lock signal power supply is switched on. In the process of reverse movement of the peach core sliding block 4, the first chute and the first sliding column are matched to drive the limiting block to move towards the side close to the locking rod 25, and the protruding mounting base 1 moves to the blocking position blocking the operation route of the locking rod 25. At this time, the lock lever 25 is in a position to block the reverse rotation of the lock cam 23, thereby locking the lock projection.

Meanwhile, the peach-core sliding block 4 slides reversely to drive the unlocking key 2 installed in the peach-core sliding block 4 to move, and the unlocking key 2 penetrates through the installation seat 1 and extends out to the position matched with the driving plane due to the elastic force of the unlocking key 2 spring arranged in the unlocking key 2.

When the door lock does not enter the locking device, the power-off mandril 7 enables the first coil component 14 to be in an off state, namely, a locking key on the washing machine is started, and the door lock does not have a locking protection function.

2. Operation of the second locking means

When the key is pressed, the second coil unit 13 is energized. The second coil iron core 15 drives the positioning rod 32 body to rotate around the third axis through the driving arm, the positioning rod 32 drives the telescopic main rod 36 and the telescopic middle rod 35 to deflect at the same time, and the second locking protrusion in the telescopic middle rod 35 is matched with the first locking protrusion 384 on the second bolt 383 of the door hook 38 to lock the second bolt 383. At this moment, the door lock locks the door plate of the washing machine, and the door of the washing machine cannot be opened.

And II, a door opening principle.

And closing the upper locking key, and operating the first coil and the second coil in sequence. Peach core slider 4 forward movement under second coil component 13 and peach core elastic component 10 elastic force effect, peach core slider 4 moves initial position under first limit structure's effect, 2 contact disconnection, door lock signal power disconnection. After the peach-core sliding block 4 moves downwards, the peach-core sliding block 4 drives the limiting block 5 to move towards the direction far away from the locking rod 25 through the interaction of the first chute and the first sliding column, so that the limiting block 5 does not protrude out of the mounting seat 1 any more, the locking rod 25 is not blocked any more, the locking rod 25 relieves the limitation on the locking cam 23, and the locking cam 23 can freely turn over.

The peach-heart sliding block 4 moves downwards to drive the unlocking key 2 to move downwards, the unlocking key 2 moves to the driving inclined plane, the driving inclined plane on the unlocking pull rod 18 drives the unlocking pull rod 18 to slide forwards under the action of the elastic piece 17 of the unlocking pull rod 18, the unlocking pull rod 18 slides forwards, the inclined plane of the pull rod is matched with the locking elastic piece 21 to pull the lock catch 22 to swing forwards, the lock catch 22 is jacked up to enable the buckle on the lock catch 22 to be separated from the locking groove 234 of the locking cam 23, and the locking cam 23 turns downwards under the action of the cam torsion spring to return to the initial state. The lock cam 23 ejects the first latch tongue 381 of the door hook 38. This state is referred to as the second state of the first locking means.

When the first lock tongue 381 of the door hook 38 is popped out, the second lock tongue 383 of the door hook 38 is not unlocked, the second lock tongue 383 pulls the telescopic middle rod 35 outwards, the washing machine door can be opened for a certain distance, but the washing machine door is not opened completely, namely, two-section type door opening is realized. The door opening distance can be limited, and the door opening function of the washing machine in a two-section mode of incomplete ejection and complete ejection is realized.

Then the second coil assembly 13 drives the positioning rod 32 to rotate, the positioning rod 32 moves to the unlocking position under the action of the positioning rod clamp spring 28, meanwhile, the telescopic main rod 36 and the telescopic middle rod 35 are driven to rotate, the locking boss in the telescopic middle rod 35 does not lock the second lock tongue 383 of the door hook 38 any more, and at this time, the telescopic middle rod 35 tension spring connected between the telescopic middle rod 35 and the seat cover 33 pulls the telescopic middle rod 35 to return to the initial state. At this point the door hook 38 is fully unlocked and the washer door is fully open.

It should be noted that, in order to realize the two-stage door opening function, the telescopic length of the telescopic structure of the second locking device is greater than the distance between the first latch 381 and the second state.

Third, emergency unlocking principle

When the washing machine is suddenly powered off or the service life of the door lock is expired, the first coil assembly 14 fails to work, and the door plate of the washing machine cannot be opened when the door lock is still in a working state. The unlocking handle 39 on the door lock mounting base 19 can be pulled, the handle contact 40 on the unlocking handle 39 pushes the peach core sliding block 4 to slide in the forward direction, so that the peach core sliding block clamp spring 6 is clamped at the initial position of the peach core sliding block 4, meanwhile, the unlocking handle 39 is in contact with the limiting surface on the mounting base 19, so that the handle can not move any more, the limiting block 5 resets, the door plate is opened by lightly pressing, and the door plate automatically pops open.

When the second coil assembly 13 fails and does not work any more, the door plate of the washing machine can only be opened for a certain distance and cannot be completely opened, the door plate is pulled outwards, the second bolt 383 of the door hook 38 drives the telescopic middle rod 35 and the telescopic main rod 36 to be pulled outwards, the telescopic main rod 36 overcomes the biasing force of the spring of the telescopic main rod 36 at the moment, the door plate rotates through the matching of the unlocking protrusion 43 and the unlocking inclined surface 44, the positioning rod clamp spring 28 in the positioning rod 32 is driven to move to the unlocking position at the same time, the telescopic middle rod 35 also rotates at the moment, the boss in the telescopic middle rod 35 does not lock the auxiliary lock head of the door hook 38 any more, and the washing. The telescopic main rod 36 is restored to the initial state by the spring of the telescopic main rod 36, and the telescopic middle rod 35 is also restored to the initial state by the spring of the telescopic middle rod 35.

As another embodiment of the locking device of the washing machine, only the first locking device may be included, or only the second locking device may be included. Accordingly, the door hook 38 is provided only with the latch tongue corresponding thereto.

The invention also provides an embodiment of the washing machine, which comprises the washing machine locking device and/or the door hook.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A washing machine locking device is matched with a door hook (38) installed on a door panel of a washing machine, the door hook (38) comprises a first bolt (381) with a through locking hole (382), and the first bolt (381) enters and exits the locking device along a bolt matching direction;

it is characterized by comprising:

a mounting base (19) on which an intermediate bracket (29) is mounted;

a locking cam (23) rotatably mounted to the intermediate bracket (29) about a first axis perpendicular to the latch bolt engagement direction; the first shaft line is provided with a first protrusion (231) which is pushed by the first lock tongue (381) to rotate in a forward direction, the second protrusion (232) which is rotated in the forward direction to a first set position and is turned into the locking hole (382) to lock the first lock tongue (381), a guide inclined plane which extends around the first shaft line, and a locking groove (234) which is arranged along the tail end of the forward rotation; a cam elastic piece (24) is arranged between the locking cam (23) and the middle bracket (29), and under the action of the cam elastic piece (24), the locking cam (23) reversely rotates to a cam initial position to eject the first bolt (381);

a lock catch (22) which is installed on the middle bracket (29) in a swinging mode around the direction perpendicular to the first axis and is provided with a buckle matched with the locking groove (234); a lock catch elastic piece (21) is arranged between the lock catch (22) and the mounting base (19), and under the action of the lock catch elastic piece (21), the lock catch is pressed against the guide inclined plane and enters the locking groove (234) when the locking cam (23) moves to the first set position so as to limit the rotation of the locking cam (23);

a bracket elastic piece (30) is arranged between the middle bracket (29) and the mounting base (19); one end of the middle bracket (29) is rotatably arranged on the mounting base (19) around an axis parallel to the first axis, and the other end of the middle bracket can be inclined to a second set position towards one side close to the door hook (38) under the action of external force against the action of elastic force of the bracket elastic piece (30); the mounting base (19) is further provided with an unlocking column (45) which is abutted against the lock catch (22) and is separated from the locking groove (234) when the middle support (29) moves to the second set position.

2. A washing machine locking device as claimed in claim 1, wherein: the middle bracket (29) is a hollow frame structure corresponding to the lock catch (22); the mounting base (19) is further provided with an unlocking column (45) which abuts against the lock catch (22) through the frame structure when the middle support (29) moves to the second set position.

3. A washing machine locking device as claimed in claim 1 or 2, characterized in that: the coil assembly comprises a mounting base (1) arranged on a mounting base (19), a first coil assembly (14) arranged on the mounting base (1) and a power-off ejector rod (7) for controlling the on-off of a current loop of the first coil assembly (14); the power-off ejector rod (7) is arranged on the mounting seat (1) in a sliding manner, and an ejector rod elastic piece (8) is arranged between the power-off ejector rod and the mounting seat (1); under the action of the ejector rod elastic piece (8), the power-off ejector rod (7) is in a position for controlling the current loop to be disconnected; the locking device of the washing machine comprises a locking rod (25) which can be rotatably arranged on the installation base (19) around an axis parallel to the matching direction of the lock tongue and a locking rod elastic piece (20) arranged between the installation base (19) and the locking rod (25); under the action of the locking rod elastic piece (20), the locking rod (25) moves to a third set position; at the third setting position, the locking rod (25) drives the power-off ejector rod (7) to move to a position for controlling the conduction of the current loop against the elastic force of the ejector rod elastic piece (8); the locking cam (23) is provided with a third bulge which drives the locking rod (25) to move to the initial position of the locking rod (25) in the process of reversely rotating to the initial position of the cam under the action of the cam elastic piece (24), and the third bulge blocks the locking rod (25) from rotating under the action of the locking rod elastic piece (20); the third projection is in a position that restricts movement of the lock lever (25) when the lock cam (23) is moved to the first set position.

4. A washing machine locking device as claimed in claim 3, wherein: the coil assembly comprises a peach core sliding block (4) and a limiting block (5) which are slidably mounted on a mounting seat (1), a peach core elastic piece (10) which drives the peach core sliding block (4) to slide to an initial position in a forward direction is arranged between the peach core sliding block (4) and the mounting seat (1), and a first coil assembly (14) is provided with a first coil iron core (11) which drives the peach core sliding block (4) to move to a locking position in a reverse direction after being electrified; the limiting block (5) is mounted on the mounting seat (1) in a sliding mode along the direction close to and far away from one side of the locking rod (25); a first chute and a first sliding column which drive the limiting block (5) to slide in the sliding process of the peach core sliding block (4) are arranged between the peach core sliding block (4) and the limiting block (5); the limiting block (5) moves to a position for blocking the locking rod (25) from rotating when the peach-heart slider (4) moves to the locking position.

5. A washing machine locking device as claimed in claim 4, characterized in that: the peach-heart sliding block (4) is provided with a triggering structure which slides to the locking position to trigger the door lock signal contact.

6. A washing machine locking device as claimed in claim 4, characterized in that: the mounting base is characterized by further comprising an unlocking pull rod (18) and a pull rod elastic piece (17) arranged between the mounting base (19) and the unlocking pull rod (18); the unlocking pull rod (18) comprises a driving section positioned in the area between the mounting base (1) and the mounting base (19) and an acting section extending into the area between the lock catch (22) and the middle bracket (29); the driving section is provided with a driving plane and a driving inclined plane which are connected; a sliding rail structure in sliding fit with the unlocking pull rod (18) is arranged on the middle bracket (29); the action section is provided with a pull rod inclined surface which is used for driving the lock catch (22) to be away from the matching position with the locking groove (234) by the forward sliding of the unlocking pull rod (18); the unlocking pull rod (18) moves to a position where the inclined surface of the pull rod has no effect on the lock catch (22) under the action of the pull rod elastic piece (17); the peach-heart sliding block (4) is provided with an unlocking key (2) and a key elastic piece (3) positioned between the unlocking key (2) and the peach-heart sliding block (4); the peach-heart sliding block (4) moves to the driving inclined plane from the driving plane in the reverse sliding process and drives the unlocking pull rod (18) to slide in the forward direction.

7. A washing machine locking device as claimed in claim 4, characterized in that: including unblock handle (39), unblock handle (39) have the top and move peach heart slider (4) slide to initial position's handle contact (40), still be provided with on mount pad (1) handle contact (40) top is moved peach heart slider (4) move to initial position back drive handle contact (40) break away from with spacing inclined plane (41) of peach heart slider (4) cooperation position.

8. A washing machine characterized by: comprising a washing machine locking device according to any one of claims 1-7.