CN107761314B

CN107761314B - Washing machine door lock

Info

Publication number: CN107761314B
Application number: CN201711262151.4A
Authority: CN
Inventors: 王立孟
Original assignee: WEIZHOU TIANJIAN ELECTRICAL EQUIPMENT CO Ltd
Current assignee: WEIZHOU TIANJIAN ELECTRICAL EQUIPMENT CO Ltd
Priority date: 2017-12-04
Filing date: 2017-12-04
Publication date: 2020-01-14
Anticipated expiration: 2037-12-04
Also published as: CN107761314A

Abstract

A washing machine door lock comprises a door hook; a lock body including a locking member that restricts separation of the door hook and the lock body, a link member that performs locking or unlocking of the locking member by executing a power-on instruction, and a locking transmission mechanism that transmits a locking force between the link member and the locking member; the linkage component is in transmission connection with the locking transmission mechanism through a clamping structure which can be freely clamped or released; after the washing machine finishes washing work, the linkage component executes a power-on instruction to unlock the locking component, and the locking transmission mechanism is driven by the clamping structure to enable the locking transmission mechanism and the locking component, and the locking component and the door hook to be separated in a tripping mode; after the locking component and the door hook are separated, the tripping structure drives the locking transmission mechanism and the locking component to trip and reset. The problem of current washing machine lock need its structure complicacy of two sets of automatically controlled structures, and after the laundry working procedure operation, the washing machine door can't realize automatic opening, leads to the washings to produce bacterium and stink easily under airtight environment is solved.

Description

Washing machine door lock

Technical Field

The invention relates to the technical field of washing machine door locks, in particular to a washing machine door lock.

Background

When the washing machine works normally, in order to ensure safety, the space for washing the clothes needs to be a closed space to avoid potential safety hazards, and the door lock of the washing machine is a key component for connecting the machine door of the washing machine and the machine body of the washing machine to form the closed space. However, if a user does not open the door of the washing machine and take out the laundry for a long time after the operation of the washing machine in the operation program is finished, the laundry is likely to generate bacteria and odor in a closed environment, and the washing operation has to be performed again. Therefore, the washing machine also needs to be automatically opened, so that the phenomenon that the clothes breed bacteria in the closed space for a long time is avoided, and a user is reminded to take out the clothes in time.

At present, as shown in fig. 13 and 14, chinese patent document CN104204329A discloses a door lock of a washing machine, when all washing procedures of the washing machine are finished, a washing machine main controller controls a first latching part 140 and a second latching part 150 to unlock a door lock slider 131, an iron core 141 is separated from a groove 133 under the action of electromagnetic force, a lock block 153 is slowly withdrawn from a notch 134 along with the recovery of a bimetal reed, the door lock slider 131 is returned to an initial state under the action of a return spring 135, and a washing machine door 0 is automatically bounced open. The end surface of the hook 121 contacting with the door lock sliding block 131 is a smooth curved surface, and in the process of the washing machine door 120 bouncing open by white movement, the hook 121 is pushed by the door lock sliding block 131 to smoothly leave the clamping hole 132, so that the washing machine door bounces open smoothly. In order to make the washing machine door 120 automatically spring open effectively, a torsion spring device is disposed on the rotating shaft 122 of the washing machine door for applying an outward spring force to the washing machine door 120 after the washing machine door 120 is unlocked.

In the door lock of the washing machine disclosed in the above patent document, the door lock operation steps are as follows: when the washing machine door is closed, the first locking part 140 with an electric control structure is triggered, and then the second locking part 150 is activated by the first locking part 140 to lock the washing machine door, so that the washing work is realized; after the washing is completed, the first latching portion 140 and the second latching portion 150 both need electromagnetic coils to generate electromagnetic force, and after the unlocking action is completed under the action of the electromagnetic force, the pushing force towards the door opening direction is applied through the return spring and the torsion spring device arranged on the washing machine door, so that the function of automatically bouncing the washing machine door is realized. Although the structure can realize the locking and automatic opening functions of the washing machine, the locking and automatic opening functions can be realized only by two sets of mutually associated electric control structures, the structure is complex, the two sets of electric control structures are associated and controlled by the main controller, the two sets of electric control structures also have the problems of high production and use cost and easy failure, and the product reliability and market competitiveness are reduced.

In order to solve the problem of high production and use costs of two sets of mutually related electric control structures in the prior art, as shown in fig. 15, chinese patent document CN106436176A in the prior art discloses a door lock of a washing machine, which comprises a door hook mounted on a door of the washing machine; the lock body is arranged on the washing machine body and corresponds to the door hook; a locking component which is matched with the door hook and can move between a locking position and a releasing position, a linkage component which executes an electrifying instruction and is linked to lock the locking component, and a locking transmission mechanism which transmits locking force between the linkage component and the locking component are arranged in the door; an insertion sensing protection mechanism for sensing the insertion state and the extraction state of the door hook is also arranged in the lock body; when the insertion perception protection mechanism works normally, the door hook is pulled out to drive the linkage component. However, the door lock of the washing machine cannot realize the function of automatically opening the door of the washing machine after the operation of the working program of the washing machine is finished, so that the problem that the washings are easy to generate bacteria and odor in a closed environment is caused.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the problems that the existing door lock of the washing machine needs two sets of electric control structures, the structure is complex, and after the operation of a washing working program is finished, the door of the washing machine cannot be automatically opened, so that the washings are easy to generate bacteria and odor in a closed environment, thereby providing the door lock of the washing machine, which comprises

A door hook installed on the washing machine door;

the lock body is arranged on the washing machine body and corresponds to the door hook, and comprises a locking part which is matched and connected with the door hook so as to limit the separation of the door hook and the lock body, a linkage part which executes an electrifying instruction to lock or unlock the locking part, and a locking transmission mechanism which transmits locking force between the linkage part and the locking part;

the linkage component and the locking transmission mechanism are in transmission connection through a clamping structure which can be freely clamped or released, and the clamping structure comprises a first clamping piece and a second clamping piece which are respectively arranged on the linkage component and the locking transmission mechanism and are mutually matched, and a releasing structure arranged between the first clamping piece and the second clamping piece; after the washing machine finishes washing work, the linkage component executes a power-on instruction to unlock the locking component, and the locking transmission mechanism is driven by the clamping structure to enable the locking transmission mechanism and the locking component, and the locking component and the door hook to be separated in a tripping mode; after the locking component and the door hook are separated, the tripping structure drives the first clamping piece and the second clamping piece to trip, and the locking transmission mechanism and the locking component are respectively reset by biasing force.

The locking component is a rotating wheel arranged corresponding to the door hook, a connecting shaft rotationally connected with the shell of the lock body is arranged on the rotating wheel, a first biasing part is arranged on the connecting shaft, and the first biasing part applies a biasing force rotating towards the direction of the door hook to the rotating wheel so as to push the door hook to pop out of the lock body.

Further, the first biasing member is a torsion spring having one end fixedly coupled to the locking member and the other end fixedly coupled to the housing of the lock body.

Wherein the lock gear mechanism comprises:

a stopper slidably mounted within the housing of the lock body and driven by the linkage member;

the limiting transmission part is slidably arranged in the shell, and the second clamping piece is arranged on the limiting transmission part and is in transmission connection with the linkage part through the clamping structure;

the transmission slide block is slidably arranged in the shell, is in transmission connection with the limit transmission piece, is pushed by the locking component to move to the locking position, is driven by the biasing force of the first biasing component to move to the unlocking position, and can be limited by the limit block when the locking component is in the locking position.

Furthermore, a claw matched with the connecting part of the locking part is arranged on the transmission sliding block, the transmission sliding block is arranged in the hollow cavity of the limit transmission part and slides towards the locking part, a U-shaped sliding groove for the claw to slide in a stretching manner is formed in one side of the limit transmission part, which faces towards the locking part, and the transmission sliding block is connected with the limit transmission part in the process of being away from the limit transmission part, so that the limit transmission part is driven to be separated from the locking part.

Furthermore, the claw is of an L-shaped structure with a clamping hook at the end part, and in the process that the transmission sliding block is far away from the limit transmission part, the clamping hook is connected with the groove wall of the U-shaped sliding groove to drive the limit transmission part to be separated from the locking part.

Further, a second biasing member is disposed on the transmission slider, the second biasing member applies a biasing force to the transmission slider in a direction toward the locking member, and the biasing force of the second biasing member is smaller than that of the first biasing member.

Further, the second biasing member is a compression spring having one end connected to the transmission slider and the other end connected to the inner wall of the housing of the lock body.

Further, the connecting end of the transmission slider and the locking component is an inclined surface inclined towards the door hook direction.

Further, when the door hook is not inserted into the lock body, the limit transmission member is obliquely arranged, and one side of the limit transmission member is far away from the locking component and is separated from the locking component; when the door hook is inserted into the lock body and is matched and connected with the locking component, the limit transmission piece is matched and connected with the locking component under the bias force of the third biasing part.

Further, the third biasing member is a compression spring having one end connected to a side of the spacing transmission member remote from the locking member and the other end connected to the inner wall of the housing.

The tripping structure comprises a first limiting boss and a fourth biasing member;

the second clamping piece is rotationally connected with the limiting transmission piece through the fourth biasing piece, and the first limiting boss is arranged on an electrical appliance shell of the lock body and used for limiting the rotational position of the second clamping piece and driving the second clamping piece to rotate and to be separated from the first clamping piece in a tripping mode; the fourth biasing member exerts a reset biasing force towards the second clamping member and towards the direction far away from the first clamping member, and drives the second clamping member to reset and abut against the second limiting boss.

Further, the fourth biasing member is a torsion spring, one end of the torsion spring is fixedly connected with the second clamping member, and the other end of the torsion spring is fixedly connected with the locking transmission mechanism.

The linkage part is connected with the trigger unit and is acted by the driving force of the trigger unit to drive the locking transmission mechanism to complete locking or unlocking of the locking part.

The washing machine control device comprises a movable insertion piece and a static insertion piece which are used for controlling the connection or disconnection of a power supply circuit; the movable insertion piece is arranged on the linkage part, the linkage part drives the movable insertion piece to be attached to the static insertion piece when the locking part is locked, and the washing machine can be started; the linkage part drives the movable inserting sheet and the static inserting sheet to be separated when the locking part is unlocked, and the washing machine cannot be started.

Furthermore, a through hole matched with the limiting block is formed in the transmission sliding block; when the locking component is in the locking position, the limiting block protrudes or sinks in the through hole along with the reciprocating movement of the linkage component.

Further, the transmission slider is parallel to the moving path of the linkage part.

Wherein, the washing machine door lock device also comprises an emergency unlocking device used for opening the washing machine door in an emergency.

Further, emergent unlocking device including set up in the outside pull rod of casing mounting base, set up the pull rod contact on the pull rod, and for the pull rod contact sets up the opening on the mounting base, during emergent unlocking, the pull rod is pulled, the pull rod contact promotes linkage part removes to the unblock position, consequently the stopper and move the inserted sheet and remove to unblock position and disconnection position respectively.

The technical scheme of the invention has the following advantages:

1. according to the washing machine door lock provided by the invention, the linkage component and the locking transmission mechanism are in transmission connection through the clamping structure which can be freely clamped or released, and after the washing machine finishes washing work, the linkage component executes the electrifying instruction to unlock the locking component and simultaneously drives the locking transmission mechanism to enable the locking transmission mechanism and the locking component, and the locking component and the door hook to be separated in a releasing way; after the locking part and the door hook are separated, the buckle structure drives the first clamping part and the second clamping part to be tripped, the locking transmission mechanism and the locking part are reset by biasing force respectively, so that preparation is made for inserting the locking part into the door hook next time, the structure can realize closing, locking and automatic opening of the washing machine door only by one set of electric control system of the linkage part, the automatic opening function of the washing machine door can be realized while the production and use cost of the washing machine door lock is reduced, the problem that bacteria are bred in a closed space for a long time by clothes is avoided, and a user is reminded of taking out the clothes in time.

2. According to the door lock of the washing machine, the locking component is the rotating wheel, and the first biasing part which applies a rotating biasing force towards the door hook direction to the locking component is arranged on the locking component, so that after the washing machine finishes washing work and the locking component and the door hook are separated from each other in a tripping mode, the rotating wheel can turn towards the door hook direction to enable the door hook to pop out of the lock body, and the washing machine door is automatically opened.

3. The door lock of the washing machine provided by the invention is characterized in that the transmission sliding block used for locking the locking part to ensure the self-locking of the washing machine during normal washing work and the limit transmission part used for realizing the automatic opening function of the door lock of the washing machine after the operation of a working program of the washing machine is finished, the automatic unlocking function by pressing the door plate and the child locking function of pushing the door to unlock after the door hook enters the lock body are separately arranged. The transmission sliding block and the limiting transmission part are separately arranged, so that when the upper lock key is not pressed down by the limiting block and is not limited to the transmission sliding block, the rotating force of the locking part is enough to push the transmission sliding block open, so that the function of the child lock can be realized, the door lock of the washing machine can be ensured to realize multiple functions, and the product competitiveness of the door lock is improved.

4. According to the washing machine door lock provided by the invention, the transmission slide block is arranged in the hollow cavity of the limit transmission part and can be arranged towards the locking part in a sliding manner to drive the limit transmission part to be separated from the locking part, so that the situation that the upper lock key is not pressed down, the door hook enters the lock body, the door hook is driven to move downwards by pushing the door inwards to drive the transmission slide block to be separated from the locking part, and the limit transmission part is driven to incline and be separated from the locking part, so that the washing machine door lock can simply and reliably realize the child lock function.

5. The door lock of the washing machine provided by the invention has the advantages that the second biasing member which applies the biasing force to the transmission slide block to move towards the locking part is arranged on the transmission slide block, the biasing force of the second biasing member is smaller than that of the first biasing member, the transmission slide block moves towards the locking part under the action of no external force, so that the transmission slide block and the locking part are connected, the biasing force of the second biasing member is smaller than that of the first biasing member, the advantage that the locking part pushes the transmission slide block to realize the child lock function is not influenced, and the second biasing member is arranged as a compression spring, so that the door lock has the advantages of simple structure and good economical efficiency.

6. According to the washing machine door lock provided by the invention, the connecting end of the transmission sliding block and the locking component is arranged to be the inclined surface inclined towards the door hook direction, so that the locking component can conveniently push the transmission sliding block to realize the child lock function.

7. According to the washing machine door lock provided by the invention, the limit transmission piece is obliquely arranged when the door hook is not inserted into the lock body, and the third biasing piece which applies the biasing force towards the locking component towards the limit transmission piece is arranged on one oblique side, so that the limit or cancellation limit of the limit transmission piece on the locking component is simply and reliably realized, and the washing machine door lock has the advantages of simple structure and reliability in use.

8. According to the washing machine door lock provided by the invention, the tripping structure is set to be a simple structure comprising the fourth biasing part and the first limiting boss, the second clamping piece is rotationally connected with the limiting transmission piece through the fourth biasing part, and the second clamping piece is limited through the first limiting boss, so that the automatic tripping of the linkage part and the locking transmission mechanism is realized, and the linkage part automatically returns to prepare for inserting the door hook into the door lock next time; and the second limiting boss limits the rotation position of the second clamping piece to reset the second clamping piece. Has the advantages of simple structure and reliable use.

9. According to the washing machine door lock provided by the invention, the emergency unlocking of opening the washing machine door under an emergency condition is realized through the pull rod in transmission connection with the linkage component, the pull rod contact on the pull rod drives the linkage component to move to the unlocking position, and then the limiting block and the movable insertion piece respectively move to the unlocking position and the disconnection position to realize the unlocking function, so that the washing machine door lock has the advantages of simple and reliable structure.

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 an exploded view of a washing machine door lock according to the present invention;

FIG. 2 is a schematic illustration of the door lock and the door hook according to the present invention;

FIG. 3 is a schematic perspective view of the present invention with the hook inserted into the door lock but without the power supply activated to lock the key and the linkage assembly disconnected from the lock actuator;

FIG. 4 is a schematic bottom perspective view of a washing machine door lock with the door hook inserted into the door lock but without the power supply activated to lock the key and the linkage member disconnected from the locking transmission mechanism according to the present invention;

FIG. 5 is a schematic view of the internal structure of the door lock of the washing machine according to the present invention;

fig. 6 is a schematic view of a fastening structure with a release structure according to the present invention;

FIG. 7 is a schematic view of the linkage assembly and the linkage assembly according to the present invention;

FIG. 8 is a schematic view of a door lock according to the present invention, shown without the hook inserted;

FIG. 9 is a schematic perspective view of a door lock with a hook according to the present invention inserted therein;

FIG. 10 is a schematic view of the internal structure of the door lock with the hook inserted therein according to the present invention;

fig. 11 is a schematic view of the internal structure of the door lock when the door hook provided by the invention is inserted into the door lock and the power supply is started to activate the locking key, the linkage part is connected with the locking transmission mechanism through the clamping structure, and the limiting block extends out to be clamped with the transmission slide block;

FIG. 12 is a schematic view of the internal structure of the door lock according to the present invention when the door of the washing machine is automatically opened after the operation of the operation program of the washing machine is completed;

FIG. 13 is a schematic perspective view of a door lock of a washing machine capable of automatically opening a door according to the prior art;

FIG. 14 is a schematic view showing an internal structure of a door lock of a washing machine capable of automatically opening a door according to the related art;

FIG. 15 is a schematic diagram of the internal structure of a door lock of a washing machine with only one set of electric control structure in the prior art;

description of reference numerals:

1-door hook; 2-a locking member; 3-a linkage member; 4-locking the transmission mechanism; 5-a clamping structure; 6-a first clamping piece; 7-a second clamping piece; 8-a connecting shaft; 9-a first biasing member; 10-a limiting block; 11-a limit drive; 12-a transmission slide block; 13-a jaw; 14-U-shaped chute; 15-a second biasing member; 16-a third biasing member; 17-a fourth biasing member; 18-a first limit boss; 19-a trigger unit; 20-a first tab; 21-moving the inserting sheet; 22-static insert sheet; 23-a pull rod; 24-a second limit boss; 120-a washing machine door; 121-hook; 122-a rotating shaft; 131-a door lock slider; 132-a card hole; 133-grooves; 134-a notch; 135-a return spring; 140-a first latch; 141-iron core; 150-a second latch; 153-locking piece

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

A door lock for a washing machine is described, as shown in figures 1, 2, 3 and 5, comprising

A door hook 1 installed on the washing machine door;

the lock body is arranged on the washing machine body and corresponds to the door hook 1, and comprises a locking part 2 which is matched and connected with the door hook 1 so as to limit the separation of the door hook 1 and the lock body, a linkage part 3 which executes an electrifying instruction and locks or unlocks the locking part 2, and a locking transmission mechanism 4 which transmits locking force between the linkage part 3 and the locking part 2;

the linkage part 3 and the locking transmission mechanism 4 are in transmission connection through a clamping structure 5 which can be freely clamped or released, and the clamping structure 5 comprises a first clamping piece 6 and a second clamping piece 7 which are respectively arranged on the linkage part 3 and the locking transmission mechanism 4 and are mutually matched, and a releasing structure arranged between the first clamping piece 6 and the second clamping piece 7; after the washing machine finishes the washing work, the linkage component 3 executes a power-on instruction to unlock the locking component 2, and the locking transmission mechanism 4 is driven by the clamping structure 5 to enable the locking transmission mechanism 4 and the locking component 2, and the locking component 2 and the door hook 1 to be separated in a tripping mode; after the locking component 2 and the door hook 1 are separated, the tripping structure drives the first clamping piece 6 and the second clamping piece 7 to trip, and the locking transmission mechanism 4 and the locking component 2 are respectively reset by biasing force. The linkage component and the locking transmission mechanism are in transmission connection through a clamping structure which can be freely clamped or released, and after the washing machine finishes washing work, the linkage component executes a power-on instruction to unlock the locking component and simultaneously drives the locking transmission mechanism to enable the locking transmission mechanism and the locking component, and the locking component and the door hook to be separated in a releasing way; after the locking part and the door hook are separated, the tripping structure drives the first clamping part and the second clamping part to trip, the locking transmission mechanism and the locking part are reset by biasing force respectively, so that preparation is made for inserting the locking part into the door hook next time, the structure can realize closing, locking and automatic opening of the washing machine door only by one set of electric control system of the linkage part, the automatic opening function of the washing machine door can be realized while the production and use cost of the washing machine door lock is reduced, the problem that bacteria are bred in a closed space for a long time by clothes is avoided, and a user is reminded of taking out the clothes in time.

In this embodiment, as shown in the exploded view of the door lock of the washing machine in fig. 1, the locking member 2 is a rotating wheel corresponding to the door hook 1, a connecting shaft 8 rotatably connected to the housing of the lock body is disposed on the rotating wheel, a first biasing member 9 is disposed on the connecting shaft 8, the first biasing member 9 is a torsion spring, one end of the torsion spring is fixedly connected to the locking member 2, and the other end of the torsion spring is fixedly connected to the housing of the lock body, and the torsion spring applies a biasing force to the rotating wheel to rotate towards the door hook 1, so as to push the door hook 1 to pop out the lock body. The locking component is a rotating wheel, and a torsional spring which applies a rotating biasing force towards the door hook direction to the locking component is arranged on the locking component, so that after the washing machine finishes washing work and the locking component and the door hook are separated from each other in a tripping mode, the rotating wheel can turn towards the door hook direction to enable the door hook to pop out of the lock body, and the washing machine door is automatically opened.

Of course, the present invention is not limited to the structure of the first biasing member 9, and in other embodiments, the first biasing member 9 may be an electromagnetic element or other elastic element.

In this embodiment, in order to realize the child lock function, that is, after the door hook enters the lock body, the inner tub of the washing machine is pushed inwards to generate an internal pushing force to unlock the door, as shown in fig. 1 and 3, the lock transmission mechanism 4 includes:

a stopper 10 slidably mounted in the housing of the lock body and driven by the linkage member 3;

the limiting transmission part 11 is slidably mounted in the shell, and the second clamping piece 7 is arranged on the limiting transmission part 11 and is in transmission connection with the linkage part 3 through the clamping structure 5;

and the transmission slide block 12 is slidably arranged in the shell, is in transmission connection with the limit transmission piece 11, is pushed by the locking component 2 to move to the locking position, is driven by the biasing force of the first biasing component 9 to move to the unlocking position, and can be limited by the limit block 10 when the locking component 2 is in the locking position. The locking part is locked, the transmission sliding block for self-locking of the washing machine during normal washing work is guaranteed, and the limit transmission part for realizing the functions of automatically opening the door lock of the washing machine after the operation of a working program is finished, automatically unlocking the door by pressing the door plate and internally pushing the door to unlock the door by matching with the transmission sliding block is separately arranged. The transmission sliding block and the limiting transmission part are separately arranged, so that when the upper lock key is not pressed down by the limiting block and is not limited to the transmission sliding block, the rotating force of the locking part is enough to push the transmission sliding block open, so that the function of the child lock can be realized, the door lock of the washing machine can be ensured to realize multiple functions, and the product competitiveness of the door lock is improved.

As shown in fig. 1, in order to realize the child lock function, the transmission slider 12 can effectively drive the limit transmission member 11 to be away from the locking member 2, so that the locking member 2 releases the locking of the door hook 1. The transmission slide block 12 is provided with a claw 13 matched with the connecting part of the locking part 2, the transmission slide block 12 is arranged in the hollow cavity of the limit transmission part 11 and is arranged towards the locking part 2 in a sliding mode, one side, facing the locking part 2, of the limit transmission part 11 is provided with a U-shaped sliding groove 14 for the claw 13 to slide in a stretching mode, and the transmission slide block 12 is connected with the limit transmission part 11 in the process of being far away from the limit transmission part 11 so as to drive the limit transmission part 11 to be separated from the locking part 2. And the claw 13 is an L-shaped structure with a hook at the end, and when the transmission slide block 12 is far away from the limit transmission part 11, the hook is connected with the groove wall of the U-shaped sliding groove 14 to drive the limit transmission part 11 to be separated from the locking part 2. The transmission slide block is arranged in the hollow cavity of the limit transmission part and can slide towards the locking part to drive the limit transmission part to be separated from the locking part, so that the situation that the upper lock key is not pressed down, the door hook enters the lock body, the inner push door drives the door hook to move downwards to drive the transmission slide block to be separated from the locking part, and the limit transmission part is driven to incline and separate from the locking part, and therefore the washing machine door lock can simply and reliably realize the child lock function.

As shown in fig. 1, the door lock of the washing machine is exploded, when the door hook 1 is inserted into the door lock and is matched with the locking part 2, the transmission slider 12 is matched and connected with the locking part 2, and when the child lock function is realized, the locking part 2 can push the transmission slider 12 to release the restriction of the locking part 2. The driving slider 12 is provided with a second biasing member 15, the second biasing member 15 is a compression spring, one end of the second biasing member 15 is connected with the driving slider 12, the other end of the second biasing member 15 is connected with the inner wall of the housing of the lock body, the second biasing member 15 applies a biasing force to the driving slider 12 to move towards the locking component 2, and the biasing force of the second biasing member 15 is smaller than that of the first biasing member 9. The transmission slider can move towards the locking component under the action of no external force by arranging the second biasing member which applies the biasing force to the transmission slider in the direction towards the locking component, and the biasing force of the second biasing member is smaller than that of the first biasing member, so that the transmission slider and the locking component are connected, and the advantage of realizing the child lock function by pushing the transmission slider by the locking component is not influenced because the biasing force of the second biasing member is smaller than that of the first biasing member, and the advantages of simple structure and good economical efficiency are realized by arranging the second biasing member as a compression spring.

As shown in fig. 1, the door lock of the washing machine is exploded, so that the locking member 2 can stably and reliably push the transmission slider 12 to release the restriction of the locking member 2 when the child lock function is realized. The connecting end of the transmission slider 12 and the locking member 2 is an inclined surface inclined toward the door hook 1.

In this embodiment, in order to simply and reliably realize the limit or the cancellation limit of the locking component by the limit driving component, a schematic diagram of the structure of the door lock when the door hook is not inserted into the door lock is shown in fig. 8, and a schematic diagram of the structure of the interior of the door lock when the door hook is inserted into the door lock is shown in fig. 10. When the door hook 1 is not inserted into the lock body, the limit transmission member 11 is disposed obliquely with one side thereof separated from the locking member 2; when the door hook 1 is inserted into the lock body to be coupled with the locking member 2, the spacing driver 11 is coupled with the locking member 2 by the biasing force of the third biasing member 16. The third biasing member 16 is a compression spring having one end connected to the side of the spacing actuator 11 remote from the locking element 2 and the other end connected to the inner wall of the housing.

In this embodiment, as shown in fig. 11, the door hook is inserted into the door lock and the power supply is started to activate the locking key, the linkage component is connected to the locking transmission mechanism through the engaging structure, and the limiting block extends out and is engaged with the transmission slider, and the schematic diagram of the internal structure of the door lock is shown in fig. 12 when the door of the washing machine is automatically opened after the operation of the washing machine is finished. The transmission slide block 12 is provided with a through hole matched with the limiting block 10; when the locking part 2 is in the locking position, the limiting block 10 protrudes or sinks in the through hole along with the reciprocating movement of the linkage part 3. And the transmission slider 12 is parallel to the moving path of the interlocking part 3.

Fig. 1 shows an exploded view of a door lock of a washing machine, fig. 6 shows a schematic view of a locking structure with a release structure, fig. 8 shows a schematic view of a door lock structure when a door hook is not inserted into the door lock, fig. 11 shows a schematic view of an internal structure of a door lock when a door hook is inserted into the door lock and a power supply is started to activate an upper locking key, a linkage component is connected with a locking transmission mechanism through the locking structure, a limiting block extends out to be locked with a transmission slider, and fig. 12 shows a schematic view of an internal structure of a door lock when a door of a washing machine is automatically opened after a working program of the washing machine. In order to realize simple and reliable clamping and releasing of the clamping structure 5, the releasing structure comprises a first limit boss 18 and a fourth biasing member 17, and the fourth biasing member 17 is a torsion spring, one end of which is fixedly connected with the second clamping piece 7, and the other end of which is fixedly connected with the locking transmission mechanism 4; the second clamping member 7 is rotatably connected with the limit transmission member 11 through the fourth biasing member 17, and the first limit boss 18 is arranged on the electric appliance shell of the lock body and used for limiting the rotating position of the second clamping member 7 and driving the second clamping member 7 to rotate and to be separated from the first clamping member 6 in a releasing way; the fourth biasing member 17 applies a return biasing force to the second engaging member 7 in a direction away from the first engaging member 6, and drives the second engaging member 7 to return to abut against the second limit projection 24. The tripping structure is set to be a simple structure comprising a fourth biasing part and a first limiting boss, the second clamping piece is connected with the limiting transmission piece in a rotating mode through the fourth biasing part, the second clamping piece is limited through the first limiting boss, automatic tripping of the linkage part and the locking transmission mechanism is achieved, and the linkage part is automatically reset to prepare for inserting the door hook into the door lock next time.

In this embodiment, the door hook shown in fig. 3 is inserted into the door lock but the power supply is not started to activate the locking key, and the linkage component is disconnected from the locking transmission mechanism; the linkage part 3 is connected with a trigger unit 19, and the linkage part 3 is driven by the driving force of the trigger unit 19 to drive the locking transmission mechanism 4 to complete locking or unlocking the locking part 2. The washing machine control device comprises a movable insertion piece 21 and a static insertion piece 22 which are used for controlling the connection or disconnection of a power supply circuit; the movable inserting sheet 21 is arranged on the linkage part 3, the linkage part 3 drives the movable inserting sheet 21 to be attached to the static inserting sheet 22 when the locking part 2 is locked, and the washing machine can be started; when the linkage component 3 unlocks the locking component 2, the movable insertion piece 21 and the static insertion piece 22 are driven to be separated, and the washing machine cannot be started.

In this embodiment, as shown in a schematic connection diagram of the pull rod and the linkage component shown in fig. 7, in order to realize emergency unlocking, the washing machine door lock device further includes an emergency unlocking device for opening a washing machine door in an emergency, the emergency unlocking device includes a pull rod 23 disposed outside the housing mounting base, a pull rod contact 24 disposed on the pull rod, and an opening disposed on the mounting base corresponding to the pull rod contact, when the washing machine is unlocked in an emergency, the pull rod 23 is pulled, the pull rod contact pushes the linkage component 3 to move to an unlocking position, and then the limit block 10 and the moving insert 21 move to the unlocking position and the disconnecting position respectively. Through the pull rod connected with the linkage component in a transmission mode, emergency unlocking of opening a washing machine door under emergency is achieved, the pull rod contact on the pull rod drives the linkage component to move to the unlocking position, and then the limiting block and the movable insertion piece move to the unlocking position and the disconnection position respectively to achieve the unlocking function.

The linkage process of the washing machine door lock of the embodiment when in specific use is as follows:

1. as shown in fig. 1, 8 and 6, when the door hook 1 is not inserted into the lock body, the limit transmission member 11 is disposed obliquely and attached to the non-rotating locking member 2 but not mutually engaged with the non-rotating locking member 2, and the limit transmission member 11 does not limit the locking member 2; meanwhile, the transmission slide block 12 arranged in the limit transmission member 11 does not have a limit function on the locking component 2.

2. As shown in fig. 2, 3 and 4, when the washing machine is required to be used for washing clothes, firstly, the washing machine door is closed, at this time, the door hook 1 installed on the washing machine door is inserted into the lock hole of the lock body, the door hook 1 pushes the locking component 2 to rotate to the locking component locking position, and the locking component 2 rotates to enable the first biasing component 9 to be in a power accumulation state; when the door hook 1 is not inserted, the limit transmission piece 11 is obliquely arranged, and the limit transmission piece 11 is matched and connected with the locking component 2 under the pushing action of the locking component 2 and the biasing force of the third biasing piece 16 after the door hook 1 is inserted. The transmission slide block 12 is driven by the limit transmission part 11 to move towards the locking part 2, and the inclined surface on the transmission slide block 12 is meshed with the locking part 2 to limit the locking part 2.

3. As shown in fig. 11, when the door hook 1 is locked by pressing the upper lock key on the washing machine, the trigger unit 19 is energized to drive the linkage member 3 to slide toward the locking member 2, the stopper 10 slidably disposed on the linkage member 3 is pushed by the locking member 2 to move toward the through hole of the transmission slider 12 by the guide action of the guide chute, and the stopper 10 is inserted into the through hole and moves toward the locking position to lock the position of the transmission slider 12, so that the transmission slider 12 fixes the position of the locking member 2, thereby locking the door hook 1.

When the linkage part 3 slides towards one side of the locking part 2, the first clamping piece 6 arranged on the linkage part 3 is connected with the second clamping piece 7 arranged on the limiting transmission part 11 in a clamping mode.

As shown in fig. 3, the interlocking member 3 slides toward the locking member 2, and the movable insertion piece 21 provided in the interlocking member 3 is brought into contact with the stationary insertion piece 22, so that the washing machine can be started.

4. As shown in fig. 12, when the power is turned off after the washing operation is finished, the upper lock key of the washing machine cancels the locking of the door hook 1. The trigger unit 19 is electrified to drive the linkage part 3 to slide towards one side far away from the locking part 2, the limiting block 10 arranged on the linkage part 3 in a sliding mode is pushed by the locking part 2 to move towards the direction far away from the through hole on the transmission slide block 12 under the guiding action of the guide sliding chute, the limiting block 10 leaves the through hole and moves towards the unlocking position, and therefore the position locking of the transmission slide block 12 is cancelled; meanwhile, when the linkage part 3 slides towards the side far away from the locking part 2, the movable inserting piece 21 arranged on the linkage part 3 is separated from the static inserting piece 22, and the washing machine is in a non-starting state.

As shown in fig. 6, while the interlocking member 3 slides toward the side away from the locking member 2, the interlocking member 3 pulls the limit driver 11 away from the locking member 2 by the engaging structure 5, the limit driver 11 and the locking member 2 are disengaged from each other, and the locking member 2 is in a free state. The locking member 2 is rotated toward the door hook 1 by the restoring force of the first biasing member 9. Since the second biasing member 15 provided on the driving slider 12 has a biasing force smaller than that of the first biasing member 9, the locking member 2 can push the driving slider 12 away from the locking member 2 by the biasing force of the first biasing member 9, so that the driving slider 12 cancels the stopper effect of the locking member 2. The locking member 2 rotates to push the door of the washing machine to open.

After the interlocking member 3 pulls the limit actuator 11 away from the locking member 2 by the engaging structure 5 to release the limit action on the locking member 2, because the second engaging member 7 provided on the limit actuator 11 is rotatably connected to the limit actuator 11 by the fourth biasing member 17,

first joint spare 6 is at the in-process of pulling second joint spare 7, and second joint spare 7 receives the limiting displacement of first spacing boss 18 on the electrical apparatus box body and takes place to rotate to make second joint spare 7 take place to rotate and separate with the dropout of first joint spare 6, second joint spare 7 rotates and the butt is used for the restriction on limit transmission spare 11 under the reset force drive of fourth biasing part 17 second spacing boss 24 of second joint spare 7 turned position, second joint spare 7 resets.

5. When the door plate of the washing machine is closed and is not started and the door of the washing machine needs to be opened, the door of the washing machine can be opened by lightly pressing the door of the washing machine. When the door of the washing machine is lightly pressed, the door hook 1 will push against the locking component 2 again, so that the rotating component 2 turns upwards again to rotate towards the door hook 1, at this time, the locking component 2 and the spacing transmission component 11 are not meshed together, and the spacing transmission component 11 continues to move towards the direction of disengaging the locking component 2 and the spacing transmission component 11 under the action of the biasing force of the third biasing component 16 until the initial inclined position is recovered. When the locking element 2 is rotated towards the door hook 1 by the return biasing force of the first biasing member 9, because the biasing force of the second biasing member 15 provided on the driving slider 12 is smaller than the biasing force of the first biasing member 9, the locking element 2 can push the driving slider 12 away from the locking element 2 by the biasing force of the first biasing member 9, so that the driving slider 12 cancels the limiting effect on the locking element 2. The locking member 2 rotates to push the door of the washing machine to open.

6. After the door plate of the washing machine is closed and is not started, the child lock function can be realized, namely the door is an inward opening door: after the washing machine door is closed, the washing machine door can be opened by applying a certain force to the inner drum of the washing machine to push the washing machine door inwards. After the washing machine door is closed, a certain force is pushed inwards from the inside to the washing machine inner drum, the generated thrust force pushes the door hook 1 outwards, the door hook 1 outwards pulls the locking component 2 to rotate towards the door hook 1, at the moment, the buckling structures of the transmission slide block 12 and the locking component 2 are separated, the transmission slide block 12 and the locking component 2 are not meshed together any more, and because the biasing force of the second biasing piece 15 arranged on the transmission slide block 12 is smaller than that of the first biasing piece 9, the locking component 2 can push the transmission slide block 12 to be far away from the locking component 2 through the biasing force of the first biasing piece 9, so that the transmission slide block 12 cancels the limiting effect on the locking component 2. In the process that the transmission sliding block 12 is far away from the locking part 2, the claw 13 of the L-shaped structure on the transmission sliding block 12 is connected with the groove wall of the U-shaped sliding groove 14 arranged on the limit transmission piece 11, so that the limit transmission piece 11 is driven to be separated from the locking part 2, and the limit effect of the limit transmission piece 11 on the locking part 2 is relieved. The locking member 2 rotates to push the door of the washing machine to open.

7. When the washing machine works normally and the door of the washing machine needs to be opened forcibly, as shown in fig. 7, the pull rod 23 on the door lock mounting base can be pulled, the pull rod contact 24 on the pull rod 23 pushes the linkage component 3 to move to the unlocking position, and then the limiting block 10 and the movable insertion sheet 21 respectively move to the unlocking position and the disconnection position. The locking member 2 is rotated by the biasing force of the first biasing member 9 to push the door of the washing machine to open.

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 door lock is characterized in that: comprises that

A door hook (1) mounted on the washing machine door;

the lock body is arranged on the washing machine body and corresponds to the door hook (1), and comprises a locking component (2) which is matched and connected with the door hook (1) so as to limit the separation of the door hook (1) and the lock body, a linkage component (3) which executes an electrifying instruction to lock or unlock the locking component (2), and a locking transmission mechanism (4) which transmits locking force between the linkage component (3) and the locking component (2);

the linkage component (3) and the locking transmission mechanism (4) are in transmission connection through a clamping structure (5) which can be freely clamped or released, and the clamping structure (5) comprises a first clamping piece (6) and a second clamping piece (7) which are respectively arranged on the linkage component (3) and the locking transmission mechanism (4) and are mutually adaptive, and a releasing structure arranged between the first clamping piece and the second clamping piece; after the washing machine finishes washing work, the linkage component (3) executes a power-on instruction to unlock the locking component (2), and the locking transmission mechanism (4) is driven by the clamping structure (5) to enable the locking transmission mechanism (4) and the locking component (2), and the locking component (2) and the door hook (1) to be separated in a releasing way; after the locking component (2) is separated from the door hook (1), the tripping structure drives the first clamping piece (6) and the second clamping piece (7) to trip, and the locking transmission mechanism (4) and the locking component (2) are respectively reset by biasing force.

2. A washing machine door lock device according to claim 1, wherein: the locking component (2) is a rotating wheel arranged corresponding to the door hook (1), a connecting shaft (8) rotationally connected with a shell of the lock body is arranged on the rotating wheel, a first biasing part (9) is arranged on the connecting shaft (8), and the first biasing part (9) applies a biasing force rotating towards the direction of the door hook (1) to the rotating wheel so as to push the door hook (1) to pop out the lock body.

3. A washing machine door lock device according to claim 2, wherein: the first biasing member (9) is a torsion spring, one end of which is fixedly connected with the locking component (2) and the other end of which is fixedly connected with the shell of the lock body.

4. The door lock device for washing machine as claimed in claim 2 or 3, wherein: the lock transmission mechanism (4) comprises:

a stop block (10) slidably mounted within the housing of the lock body and driven by the linkage member (3);

the limiting transmission part (11) is slidably arranged in the shell, and the second clamping piece (7) is arranged on the limiting transmission part (11) and is in transmission connection with the linkage part (3) through the clamping structure (5);

and the transmission slide block (12) is slidably arranged in the shell, is in transmission connection with the limit transmission piece (11), is pushed by the locking component (2) to move to the locking position, is driven by the biasing force of the first biasing part (9) to move to the unlocking position, and can be limited by the limit block (10) when the locking component (2) is in the locking position.

5. The washing machine door lock device according to claim 4, wherein: the transmission device is characterized in that a clamping jaw (13) matched with the connecting part of the locking part (2) is arranged on the transmission sliding block (12), the transmission sliding block (12) is arranged in a hollow cavity of the limit transmission part (11) and faces towards the locking part (2) in a sliding mode, a U-shaped sliding groove (14) for the clamping jaw (13) to slide in a telescopic mode is arranged on one side of the locking part (2) facing towards the limit transmission part (11), the transmission sliding block (12) is far away from the limit transmission part (11) and is connected with the limit transmission part (11) in the process, and therefore the limit transmission part (11) is driven to be separated from the locking part (2).

6. The washing machine door lock device according to claim 5, wherein: the clamping jaw (13) is of an L-shaped structure, the end part of the L-shaped structure is provided with a clamping hook, and in the process that the transmission sliding block (12) is far away from the limit transmission part (11), the clamping hook is connected with the groove wall of the U-shaped sliding groove (14) to drive the limit transmission part (11) to be separated from the locking part (2).

7. The door lock device for washing machine as claimed in claim 5 or 6, wherein: the transmission slide block (12) is provided with a second biasing member (15), the second biasing member (15) applies a biasing force to the transmission slide block (12) to move towards the locking part (2), and the biasing force of the second biasing member (15) is smaller than that of the first biasing member (9).

8. The washing machine door lock device according to claim 7, wherein: the second biasing member (15) is a compression spring, one end of which is connected with the transmission slide block (12) and the other end is connected with the inner wall of the shell of the lock body.

9. The washing machine door lock device according to claim 4, wherein: the connecting end of the transmission sliding block (12) and the locking component (2) is an inclined surface inclined towards the door hook (1).

10. The washing machine door lock device according to claim 4, wherein: when the door hook (1) is not inserted into the lock body, the limit transmission piece (11) is obliquely arranged, and one side of the limit transmission piece is far away from the locking component (2) and is separated from the locking component; when the door hook (1) is inserted into the lock body and is matched and connected with the locking component (2), the limit transmission piece (11) is matched and connected with the locking component (2) under the action of the biasing force of the third biasing piece (16).

11. A door lock device for a washing machine according to claim 10, wherein: the third biasing member (16) is a compression spring, one end of the third biasing member is connected with one side of the limit transmission member (11) far away from the locking component (2), and the other end of the third biasing member is connected with the inner wall of the shell.

12. The washing machine door lock device according to claim 4, wherein: the trip structure comprises a first limit boss (18) and a fourth biasing member (17);

the second clamping piece (7) is rotationally connected with the limiting transmission piece (11) through the fourth biasing piece (17), and the first limiting boss (18) is arranged on an electrical appliance shell of the lock body and used for limiting the rotational position of the second clamping piece (7), driving the second clamping piece (7) to rotate and separating from the first clamping piece (6) in a releasing way; the fourth biasing part (17) exerts a reset biasing force towards the direction away from the first clamping piece (6) towards the second clamping piece (7) to drive the second clamping piece (7) to reset and abut against the second limiting boss (24).

13. A door lock device for a washing machine according to claim 12, wherein: the fourth biasing part (17) is a torsion spring, one end of the fourth biasing part is fixedly connected with the second clamping part (7), and the other end of the fourth biasing part is fixedly connected with the locking transmission mechanism (4).

14. The washing machine door lock device according to claim 4, wherein: the linkage part (3) is connected with the trigger unit (19), and the linkage part (3) is driven by the driving force of the trigger unit (19) to complete locking or unlocking of the locking part (2) through the locking transmission mechanism (4).

15. The washing machine door lock device according to claim 4, wherein: the washing machine control device comprises a movable insertion piece (21) and a static insertion piece (22) which are used for controlling the connection or disconnection of a power supply circuit; the movable inserting piece (21) is arranged on the linkage part (3), the linkage part (3) drives the movable inserting piece (21) to be attached to the static inserting piece (22) when the locking part (2) is locked, and the washing machine can be started; the linkage part (3) is right the locking part (2) drives when unlocking the movable inserting piece (21) and the static inserting piece (22) are separated, and the washing machine cannot be started.

16. The washing machine door lock device according to claim 4, wherein: the transmission sliding block (12) is provided with a through hole matched with the limiting block (10); when the locking component (2) is in a locking position, the limiting block (10) protrudes or sinks in the through hole along with the reciprocating movement of the linkage component (3).

17. The washing machine door lock device according to claim 16, wherein: the transmission slide block (12) is parallel to the moving path of the linkage part (3).

18. A washing machine door lock device according to claim 15, wherein: the washing machine door lock device further includes an emergency unlocking device for opening the washing machine door in an emergency.

19. A washing machine door lock device according to claim 18, wherein: the emergency unlocking device comprises a pull rod (23) arranged outside the shell mounting base, a pull rod contact (24) arranged on the pull rod, and an opening formed in the mounting base by the pull rod contact, wherein during emergency unlocking, the pull rod (23) is pulled, the pull rod contact pushes the linkage component (3) to move to an unlocking position, and then the limiting block (10) and the movable insertion piece (21) move to the unlocking position and a disconnection position respectively.