CN216866306U - Washing machine door lock - Google Patents

Abstract

The utility model relates to the technical field of washing machine door locks, in particular to a washing machine door lock which comprises a base, a cover plate, a driving mechanism, a linkage mechanism, a circuit mechanism and a lock hook, wherein the cover plate is arranged on the base; the cover plate and the base are detachably assembled to form a closed cavity, and the lock hook, the linkage mechanism, the driving mechanism and the circuit mechanism are arranged in the cavity in a limiting manner; the linkage mechanism comprises a first transmission mechanism, a second transmission mechanism and a third transmission mechanism which are movably wedged in sequence; the driving telescopic end of the driving mechanism drives the first transmission mechanism to move up and down when doing telescopic motion, the second transmission mechanism moves in the left-right direction through the first wedging structure, the second transmission mechanism moves left and right to be used for connecting or disconnecting the circuit mechanism, the third transmission mechanism is limited or released through the second wedging structure, and the state of the third transmission mechanism is used for locking or unlocking the lock hook. When the washing machine is started, the utility model not only temporarily loses the control function of any other operation key, but also firmly and reliably locks the door of the washing machine.

Description

Washing machine door lock

Technical Field

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

Background

The door lock of the washing machine plays a crucial role in the washing machine, when the washing machine works normally, the door body of the washing machine is required to be connected with the washing machine main body through the door lock of the washing machine, if the door of the washing machine cannot be locked when the washing machine works normally, the door body is randomly opened or other misoperation is carried out, the door lock is light and possibly damages the washing machine, and heavy and brings danger to a wrong operator.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a washing machine door lock, which can not only temporarily lose the control function of any other operation key when a washing machine is started, but also firmly and reliably lock the door body of the washing machine.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a washing machine door lock comprises a base, a cover plate, a driving mechanism, a linkage mechanism, a circuit mechanism and a lock hook;

the base is provided with a cavity, the cover plate is attached to the edge of the base and detachably assembled to form a closed cavity, a plurality of limiting blocks are respectively arranged in the cavity and on the covering surface of the cover plate, and the limiting blocks are used for limiting and installing the lock hook, the linkage mechanism, the driving mechanism and the circuit mechanism in the cavity;

the linkage mechanism comprises a first transmission mechanism, a second transmission mechanism and a third transmission mechanism, a first wedging structure is arranged between the first transmission mechanism and the second transmission mechanism, a second wedging structure is arranged between the second transmission mechanism and the third transmission mechanism, and the first transmission mechanism, the second transmission mechanism and the third transmission mechanism are movably wedged in sequence;

the driving mechanism and the circuit mechanism are adjacently arranged below the cavity, the first transmission mechanism, the second transmission mechanism and the third transmission mechanism are adjacently arranged above the cavity, the lock hook is arranged in front of the third transmission mechanism through the cover plate and the cover of the base, and the lock hook is rotatably and movably arranged on a door of the washing machine;

the first transmission mechanism is positioned above the driving mechanism, the driving mechanism is provided with a driving telescopic end, the driving telescopic end extends into an inner cavity of the first transmission mechanism along the vertical direction, the front end of the driving telescopic end of the driving mechanism is connected with the lower part of the first transmission mechanism, and the driving telescopic end performs reciprocating telescopic motion in the vertical direction;

the second transmission mechanism is positioned above the circuit mechanism, the second transmission mechanism is provided with a protruding block, the circuit mechanism is provided with a press switch, the protruding block is used for pressing the press switch, and the circuit mechanism is used for outputting a corresponding signal to a main control board of the washing machine;

the driving mechanism drives the first transmission mechanism to move up and down when the driving telescopic end of the driving mechanism does telescopic motion, the second transmission mechanism moves in the left-right direction through the first wedging structure, the second transmission mechanism moves left and right to be used for switching on or switching off the circuit mechanism, the third transmission mechanism is limited or released through the second wedging structure, and the state of the third transmission mechanism is used for locking or unlocking the lock hook.

Preferably, the first wedging structure comprises a first wedge block and a wedge-shaped sliding groove, the first transmission mechanism comprises a first sliding block, and the second transmission mechanism comprises a second sliding block;

the right end of the first sliding block is provided with the first wedge block, the left end of the second sliding block is provided with the wedge-shaped sliding groove, and the wedging surface of the first wedge block and the groove surface of the wedge-shaped sliding groove are inclined surfaces which are matched with each other respectively.

Preferably, the second wedging structure comprises a second wedge block and a wedge-shaped notch, and the third transmission mechanism comprises a third sliding block;

the right end of the second sliding block is provided with the wedge-shaped notch, the left end of the third sliding block is provided with the second wedge block, and the wedging surface of the second wedge block and the notch surface of the wedge-shaped notch are respectively concave-convex surfaces which are matched with each other.

Preferably, the first transmission mechanism further comprises a reset structure and a first spring, a first installation cavity is formed in the first sliding block, the reset structure and the first spring are vertically installed in the first installation cavity, the lower end of the first spring abuts against the limiting block, and the upper end of the first spring abuts against the lower end of the reset structure;

the lower end of the first sliding block is provided with a lower bayonet, and a driving telescopic end of the driving mechanism extends into the first mounting cavity through the lower bayonet;

an upper bayonet is formed in the upper end of the first sliding block, the resetting structure is provided with a resetting telescopic end, the resetting telescopic end can perform reciprocating telescopic motion in the vertical direction, and the resetting telescopic end extends out of the first mounting cavity through the upper bayonet;

the end of the driving telescopic end is provided with a fixed clamping block, the fixed clamping block is perpendicular to the driving telescopic end, the resetting telescopic end sleeve is provided with a sliding clamping block, the sliding clamping block is perpendicular to the resetting telescopic end, and the lengths of the fixed clamping block and the sliding clamping block are respectively greater than the lengths of the upper bayonet and the lower bayonet.

Preferably, the device further comprises a resetting unlocking piece movably mounted on the outer side of the base and close to the first transmission structure;

the resetting unlocking piece comprises a resetting arm and a resetting sub-arm, the resetting arm is in an arc bending shape, one end of the resetting arm is fixedly connected to the upper end of the base, the other end of the resetting arm can be movably mounted at the left end of the base up and down, the resetting sub-arm is a branch of the resetting arm, a resetting through hole is formed in the upper end of the base, the free end of the resetting sub-arm extends downwards into the cavity of the base through the resetting through hole, and the free end of the resetting sub-arm is located right above the resetting telescopic end of the resetting structure and is not in contact with the resetting telescopic end;

when external force acts on the reset arm to enable the reset sub-arm to move, the reset sub-arm moves to abut against the reset telescopic end of the reset structure.

Preferably, the second transmission mechanism further comprises a second spring, a second mounting cavity is formed in the second slider, the second spring is horizontally mounted in the second mounting cavity, the left end of the second spring abuts against the left end of the second mounting cavity, and the right end of the second spring abuts against the limiting block.

Preferably, the third transmission mechanism further comprises a third spring, a third mounting cavity is formed in the third slider, the third spring is vertically mounted in the third mounting cavity, the upper end of the third spring abuts against the cavity wall of the cavity, and the lower end of the third spring abuts against the lower end of the third mounting cavity.

Preferably, the lock hook comprises a rotating shaft, a push-pull part, a connecting part and a limiting part, the push-pull part, the connecting part and the limiting part are sequentially connected to form a V-shaped component, and the rotating shaft is arranged at an inner angle of the V-shaped component;

the cover plate is provided with an installation opening, the lock hook is limited and installed on the limiting block through the rotating shaft, the push-pull part protrudes out of the installation opening, and the limiting part abuts against the lower end of the third transmission mechanism;

when external force acts on the push-pull part, the lock hook rotates around the rotating shaft, and the limiting part rotates along with the rotation of the lock hook.

Preferably, the circuit mechanism further comprises a linkage power supply and a plurality of pin pieces, the push switch is arranged above the linkage power supply, and the pin pieces are electrically connected with the linkage power supply;

the linkage power supply is turned on or off to control the connection or disconnection of the pin sheet and output a corresponding signal to a main control panel of the washing machine.

Preferably, the covering surface of the cover plate is further provided with positioning columns, positioning holes are further formed in the cavity, the positioning columns correspond to the positioning holes one to one, and the positioning columns penetrate through the positioning holes;

the novel clamping device is characterized in that a plurality of buckles extend around the cover plate, a plurality of convex clamping blocks are arranged around the base, the buckles correspond to the clamping blocks one to one, and the cover plate is detachably clamped with the clamping blocks through the buckles.

Compared with the prior art, the technical scheme has the following beneficial effects: according to the utility model, by driving the linkage mechanism, on one hand, the lock hook is in an unlocking state or a locking state, on the other hand, the current state information of the lock hook can be sent to the main control board of the washing machine for judgment through the switching state of the circuit mechanism, and the main control board of the washing machine can lock other washing function keys according to the state information of the lock hook, so that the phenomenon that the operation of the washing machine is influenced by the misoperation of a user or the unconscious behaviors of children, pets and the like is avoided, the risk of injury of the working washing machine is effectively reduced, and the safety of the children, the pets and the like and the use safety of the washing machine in the working process are improved.

Drawings

FIG. 1 is a schematic structural view of a door lock of a washing machine according to the present invention;

FIG. 2 is a front schematic view of the base of the washer door lock of the present invention;

FIG. 3 is a schematic rear view of the cover plate of the door lock for the washing machine according to the present invention;

FIG. 4 is a front schematic view of the internal structure of the door lock of the washing machine of the present invention;

FIG. 5 is a rear view schematically illustrating the internal structure of the door lock for the washing machine according to the present invention;

FIG. 6 is a right side schematic view of the internal structure of the washing machine door lock of the present invention;

FIG. 7 is a schematic front view of one embodiment of the door lock of the washing machine of the present invention;

FIG. 8 is a rear view schematic corresponding to FIG. 7;

FIG. 9 is a schematic front view of one embodiment of the door lock of the washing machine of the present invention;

FIG. 10 is a rear view corresponding to FIG. 9;

FIG. 11 is a schematic front view of one embodiment of the door lock of the washing machine of the present invention;

in the drawings: the locking device comprises a base 1, a limiting block 11, a reset through hole 12, a positioning hole 13, a clamping block 14, a cover plate 2, a positioning column 21, a buckle 22, a mounting opening 23, a driving mechanism 3, a driving telescopic end 31, a fixed clamping block 32, a reset unlocking piece 4, a reset arm 41, a reset sub arm 42, a circuit mechanism 5, a press switch 51, a linkage power supply 52, a pin piece 53, a locking hook 6, a rotating shaft 61, a push-pull part 62, a connecting part 63, a limiting part 64, a first transmission mechanism 7, a first sliding block 70, a first mounting cavity 701, a reset structure 71, a self-locking telescopic end 711, a first spring 72, a second transmission mechanism 8, a second sliding block 80, a second mounting cavity 801, a convex block 81, a second spring 82, a third transmission mechanism 9, a third sliding block 90, a third mounting cavity 901, a third spring 91, a third mounting cavity 901, a first wedging structure 10, a first wedge block 101, a wedge sliding groove 102, a second wedging structure 20, a wedge structure 20 and a locking structure, A second wedge 201, a wedge-shaped notch 202.

Detailed Description

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and 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 considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

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; 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.

As shown in fig. 1-6, a washing machine door lock comprises a base 1, a cover plate 2, a driving mechanism 3, a linkage mechanism, a circuit mechanism 5 and a latch hook 6;

the base 1 is provided with a cavity, the cover plate 2 is attached to the edge of the base 1 and detachably assembled to form a closed cavity, a plurality of limiting blocks 11 are respectively arranged in the cavity and on the covering surface of the cover plate 2, and the limiting blocks 11 are used for limiting and installing the lock hook 6, the linkage mechanism, the driving mechanism 3 and the circuit mechanism 5 in the cavity;

the linkage mechanism comprises a first transmission mechanism 7, a second transmission mechanism 8 and a third transmission mechanism 9, a first wedging structure 10 is arranged between the first transmission mechanism 7 and the second transmission mechanism 8, a second wedging structure 20 is arranged between the second transmission mechanism 8 and the third transmission mechanism 9, and the first transmission mechanism 7, the second transmission mechanism 8 and the third transmission mechanism 9 are movably wedged in sequence;

the driving mechanism 3 and the circuit mechanism 5 are adjacently installed below the cavity, the first transmission mechanism 7, the second transmission mechanism 8 and the third transmission mechanism 9 are adjacently installed above the cavity, the lock hook 6 is installed in front of the third transmission mechanism 9 through the cover of the cover plate 2 and the base 1, and the lock hook 6 is rotatably and movably installed on the door of the washing machine;

the first transmission mechanism 7 is positioned above the driving mechanism 3, the driving mechanism 3 is provided with a driving telescopic end 31, the driving telescopic end 31 extends into an inner cavity of the first transmission mechanism 7 along the vertical direction, the front end of the driving telescopic end 31 of the driving mechanism 3 is connected with the lower part of the first transmission mechanism 7, and the driving telescopic end 31 performs reciprocating telescopic motion in the vertical direction;

the second transmission mechanism 8 is located above the circuit mechanism 5, the second transmission mechanism 8 is provided with a protruding block 81, the circuit mechanism 5 is provided with a press switch 51, the protruding block 81 is used for pressing the press switch 51, and the circuit mechanism 5 is used for outputting a corresponding signal to a main control board of the washing machine;

when the driving telescopic end 31 of the driving mechanism 3 makes telescopic motion, the first transmission mechanism 7 is driven to move up and down, the second transmission mechanism 8 is driven to move in the left-right direction through the first wedging structure 10, the second transmission mechanism 8 moves left and right to be used for switching on or switching off the circuit mechanism 5, the third transmission mechanism 9 is limited or released through the second wedging structure 20, and the state of the third transmission mechanism 9 is used for locking or unlocking the locking hook 6.

According to the utility model, by driving the linkage mechanism, on one hand, the lock hook 6 is in an unlocking state or a locking state, on the other hand, the current state information of the lock hook 6 can be sent to the main control board of the washing machine for judgment through the switching state of the circuit mechanism 5, and the main control board of the washing machine can lock other washing function keys according to the state information of the lock hook 6, so that the phenomenon that the operation of the washing machine is influenced by misoperation of a user or unconscious behaviors of children, pets and the like is avoided, the risk of injury of the washing machine in work is effectively reduced, and the safety of the children, pets and other non-adults and the use safety of the washing machine in the working process are improved.

Specifically, the first transmission mechanism 7, the second transmission mechanism 8 and the third transmission mechanism 9 are elastic members, which not only can move correspondingly under the action of the driving mechanism 3, but also can return to the original positions under the condition of no acting force.

As shown in fig. 7-8, when the door lock is initially in a closed state, that is, when the driving mechanism 3 is not started, the first wedging structure 10 and the second wedging structure 20 are not movably wedged, the first wedging structure 10 between the first transmission mechanism 7 and the second transmission mechanism 8 is flush and overlapped, the second wedging structure 20 between the second transmission mechanism 8 and the third transmission mechanism 9 is flush and has a gap, the third transmission mechanism 9 is in an elastic state, and at this time, the latch hook 6 is in a rotatable state under an external force, so that the door body can be freely opened and closed; as shown in fig. 9-10, when the door lock is in an open state, that is, the driving mechanism 3 is started, the driving telescopic end 31 of the driving mechanism 3 extends upward to drive the first transmission mechanism 7 to move upward, at this time, the first transmission mechanism 7 is located above the second transmission mechanism 8, the first wedging structure 10 is misaligned and misaligned, so that the second transmission mechanism 8 slides rightward, the gap of the second wedging structure 20 is gradually reduced, until the second wedging structure 20 is aligned and aligned, so that the third transmission mechanism 9 is in a fixed state, at this time, the lock hook 6 is in a non-rotatable state under an external force, and the door body cannot be opened and closed freely.

In a further illustration, the first wedging structure 10 includes a first wedge 101 and a wedge sliding groove 102, the first transmission mechanism 7 includes a first sliding block 70, and the second transmission mechanism 8 includes a second sliding block 80;

the right end of the first sliding block 70 is provided with the first wedge block 101, the left end of the second sliding block 80 is provided with the wedge-shaped sliding groove 102, and the wedging surface of the first wedge block 101 and the groove surface of the wedge-shaped sliding groove 102 are inclined surfaces which are matched with each other.

To explain further, the second wedging structure 20 includes a second wedge 201 and a wedge gap 202, and the third transmission mechanism 9 includes a third sliding block 90;

the right end of the second slider 80 is provided with the wedge-shaped notch 202, the left end of the third slider 90 is provided with the second wedge 201, and the wedging surface of the second wedge 201 and the notch surface of the wedge-shaped notch 202 are concave-convex surfaces which are matched with each other.

The specific working principle of the linkage mechanism is as follows: when the wedging surface of the first wedge 101 is located above the groove surface of the wedge-shaped chute 102, the second slider 80 slides to the right; when the wedging surface of the first wedge 101 is located below the groove surface of the wedge-shaped chute 102, the second slider 80 is slid leftward.

When the notch surface of the wedge-shaped notch 202 and the wedging surface of the second wedge 201 are overlapped, the third slider 90 keeps a limiting state, and the locking hook 6 cannot rotate; when the notch surface of the wedge-shaped notch 202 and the wedged surface of the second wedge 201 are not coincident, the third slider 90 maintains a released state, and the latch hook 6 can rotate.

Through the position change between the first wedging structure 10 and the second wedging structure 20 which are simple and reliable in structure, the locking or unlocking of the locking hook 6 can be realized, the circuit mechanism 5 can be triggered to play a role in informing, two purposes are achieved at one stroke, and the practicability is improved.

Further, the first transmission mechanism 7 further includes a reset structure 71 and a first spring 72, a first mounting cavity 701 is formed inside the first slider 70, the reset structure 71 and the first spring 72 are vertically mounted in the first mounting cavity 701, the lower end of the first spring 72 abuts against the limiting block 11, and the upper end of the first spring 72 abuts against the lower end of the reset structure 71;

a lower bayonet is formed at the lower end of the first slider 70, and the driving telescopic end 31 of the driving mechanism 3 extends into the first mounting cavity 701 through the lower bayonet;

an upper bayonet is formed at the upper end of the first sliding block 70, the reset structure 71 is provided with a reset telescopic end 711, the reset telescopic end 711 can perform reciprocating telescopic motion in the vertical direction, and the reset telescopic end 711 extends out of the first mounting cavity 701 through the upper bayonet;

the end of the driving telescopic end 31 is provided with a fixed clamping block 32, the fixed clamping block 32 is perpendicular to the driving telescopic end 31, the resetting telescopic end 711 is sleeved with a sliding clamping block 712, the sliding clamping block 712 is perpendicular to the resetting telescopic end 711, and the lengths of the fixed clamping block 32 and the sliding clamping block 712 are respectively greater than the lengths of the upper bayonet and the lower bayonet.

More specifically, the device further comprises a reset unlocking part 4, wherein the reset unlocking part 41 is movably arranged on the outer side of the base 1 and is close to the first transmission structure 7;

the resetting unlocking piece 4 comprises a resetting arm 41 and a resetting sub-arm 42, the resetting arm 41 is in an arc bending shape, one end of the resetting arm 41 is fixedly connected to the upper end of the base 1, the other end of the resetting arm 41 can be movably mounted at the left end of the base 1 up and down, the resetting sub-arm 42 is a branch of the resetting arm 41, a resetting through hole 12 is formed in the upper end of the base 1, the free end of the resetting sub-arm 42 extends into the cavity of the base 1 downwards through the resetting through hole 12, and the free end of the resetting sub-arm 42 is located right above the resetting telescopic end 711 of the resetting structure 71 and is not in contact with the resetting telescopic end 711;

when an external force acts on the reset arm 41 to move the reset sub-arm 42, the reset sub-arm 42 moves to abut against the reset telescopic end 711 of the reset structure 7.

When the door lock is in an open state, that is, when the driving telescopic end 31 of the driving mechanism 3 extends upwards, the door body still keeps an upwards extending state due to an unexpected power failure, and the latch hook 6 is in a non-rotatable state under the action of an external force, the door body cannot be opened and closed freely, so that clothes inside the washing machine cannot be taken out normally, in order to handle a sudden event similar to the power failure, the utility model designs a preparation scheme of the resetting unlocking piece 4, when the external force acts on the resetting arm 41 to move the resetting arm 41 downwards, the resetting sub-arm 42 moves downwards along with the downward movement, and acts on the resetting telescopic end 711 of the resetting structure 71 through the resetting through hole 12 to move the resetting telescopic end 711 downwards, so that the first wedging structures 10 between the first transmission mechanism 7 and the second transmission mechanism 8 are flush and overlapped, as shown in fig. 11, thereby unlocking the latch hook 6, and enabling the door body to be opened and closed freely to take out the clothes, the reset structure 71 is an elastic structure having a certain self-reset function, such as a ball-point pen pressing structure.

Further, the second transmission mechanism 8 further includes a second spring 82, a second mounting cavity 801 is formed inside the second slider 80, the second spring 82 is horizontally mounted in the second mounting cavity 801, a left end of the second spring 82 abuts against a left end of the second mounting cavity 801, and a right end of the second spring 82 abuts against the limiting block 11.

In a further description, the third transmission mechanism 9 further includes a third spring 91, a third installation cavity 901 is formed in the third slider 90, the third spring 91 is vertically installed in the third installation cavity 901, an upper end of the third spring 91 abuts against a cavity wall of the cavity, and a lower end of the third spring 91 abuts against a lower end of the third installation cavity 901.

The first slider 70, the second slider 80 and the third slider 90 are respectively limited by the spring bodies in the respective structures, so that the linear movement can be generated only in a short distance, and meanwhile, the self-resetting function is realized.

More specifically, the latch hook 6 includes a rotation shaft 61, a push-pull portion 62, a connecting portion 63, and a stopper portion 64, the push-pull portion 62, the connecting portion 63, and the stopper portion 64 are sequentially connected to form a V-shaped member, and the rotation shaft 61 is disposed at an inner angle of the V-shaped member;

the cover plate 2 is provided with an installation opening 23, the lock hook 6 is limited and installed on the limit block 11 through the rotating shaft 61, the push-pull part 62 protrudes out of the installation opening 23, and the limit part 64 abuts against the lower end of the third transmission mechanism 9;

when an external force acts on the push-pull portion 62, the locking hook 6 rotates around the rotating shaft 61, and the stopper portion 64 rotates along with the rotation of the locking hook 6. When the washing machine is not started, the locking hook 6 is in an unlocking state, the door body of the washing machine can be freely opened and closed, but the elastic action of the third spring 91 needs to be overcome, so that the washing machine still has a certain protection effect on children.

More specifically, the circuit mechanism 5 further includes a linkage power source 52 and a plurality of pin pieces 53, the push switch 51 is disposed above the linkage power source 52, and the pin pieces 53 are electrically connected to the linkage power source 52;

the on or off of the linkage power source 52 is used for controlling the on or off of the pin piece 53 and outputting a corresponding signal to a main control board of the washing machine.

Further, the covering surface of the cover plate 2 is further provided with positioning columns 21, positioning holes 13 are further formed in the cavity, the positioning columns 21 correspond to the positioning holes 13 one to one, and the positioning columns 21 penetrate through the positioning holes 13;

the periphery of the cover plate 2 extends to form a plurality of buckles 22, the periphery of the base 1 is provided with a plurality of protruding clamping blocks 14, the buckles 22 correspond to the clamping blocks 14 in a one-to-one mode, and the cover plate 2 and the base 1 are detachably clamped with the clamping blocks 14 through the buckles 22.

In the embodiment, the cover plate 2 and the base 1 are quickly assembled through the positioning columns 21 and the positioning holes 13, so that the assembling efficiency is high, the dislocation is not easy to occur, and the matching precision is high; and then the matched buckle 22 is clamped with the clamping block 14, and the clamping and the pressing are mutually matched and fixed, so that the assembly effect is better, the manufacturing cost is lower, and the assembly and the disassembly are both convenient.

The technical principles of the present invention have been described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will occur to those skilled in the art without the exercise of inventive faculty based on the explanations herein, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined in the appended claims.

Claims (10)

1. A washing machine door lock is characterized by comprising a base, a cover plate, a driving mechanism, a linkage mechanism, a circuit mechanism and a latch hook;

the base is provided with a cavity, the cover plate is attached to the edge of the base and detachably assembled to form a closed cavity, a plurality of limiting blocks are respectively arranged in the cavity and on the covering surface of the cover plate, and the limiting blocks are used for limiting and installing the lock hook, the linkage mechanism, the driving mechanism and the circuit mechanism in the cavity;

the linkage mechanism comprises a first transmission mechanism, a second transmission mechanism and a third transmission mechanism, a first wedging structure is arranged between the first transmission mechanism and the second transmission mechanism, a second wedging structure is arranged between the second transmission mechanism and the third transmission mechanism, and the first transmission mechanism, the second transmission mechanism and the third transmission mechanism are movably wedged in sequence;

the driving mechanism and the circuit mechanism are adjacently arranged below the cavity, the first transmission mechanism, the second transmission mechanism and the third transmission mechanism are adjacently arranged above the cavity, the lock hook is arranged in front of the third transmission mechanism through the cover plate and the cover of the base, and the lock hook is rotatably and movably arranged on a door of the washing machine;

the first transmission mechanism is positioned above the driving mechanism, the driving mechanism is provided with a driving telescopic end, the driving telescopic end extends into an inner cavity of the first transmission mechanism along the vertical direction, the front end of the driving telescopic end of the driving mechanism is connected with the lower part of the first transmission mechanism, and the driving telescopic end performs reciprocating telescopic motion in the vertical direction;

the second transmission mechanism is positioned above the circuit mechanism, the second transmission mechanism is provided with a protruding block, the circuit mechanism is provided with a press switch, the protruding block is used for pressing the press switch, and the circuit mechanism is used for outputting a corresponding signal to a main control board of the washing machine;

the driving mechanism drives the first transmission mechanism to move up and down when the driving telescopic end of the driving mechanism does telescopic motion, the second transmission mechanism moves in the left-right direction through the first wedging structure, the second transmission mechanism moves left and right to be used for switching on or switching off the circuit mechanism, the third transmission mechanism is limited or released through the second wedging structure, and the state of the third transmission mechanism is used for locking or unlocking the lock hook.

2. A washing machine door lock according to claim 1, wherein the first wedging arrangement comprises a first wedge and a wedge runner, the first transmission comprises a first slider, and the second transmission comprises a second slider;

the right end of the first sliding block is provided with the first wedge block, the left end of the second sliding block is provided with the wedge-shaped sliding groove, and the wedging surface of the first wedge block and the groove surface of the wedge-shaped sliding groove are inclined surfaces which are matched with each other respectively.

3. A washing machine door lock according to claim 2, wherein the second wedging arrangement comprises a second wedge and a wedge-shaped notch, and the third transmission comprises a third slider;

the right end of the second sliding block is provided with the wedge-shaped notch, the left end of the third sliding block is provided with the second wedge block, and the wedging surface of the second wedge block and the notch surface of the wedge-shaped notch are respectively concave-convex surfaces which are matched with each other.

4. The washing machine door lock according to claim 2, wherein the first transmission mechanism further comprises a reset structure and a first spring, a first mounting cavity is formed in the first sliding block, the reset structure and the first spring are vertically mounted in the first mounting cavity, the lower end of the first spring abuts against the limiting block, and the upper end of the first spring abuts against the lower end of the reset structure;

the lower end of the first sliding block is provided with a lower bayonet, and a driving telescopic end of the driving mechanism extends into the first mounting cavity through the lower bayonet;

an upper bayonet is formed in the upper end of the first sliding block, the resetting structure is provided with a resetting telescopic end, the resetting telescopic end can perform reciprocating telescopic motion in the vertical direction, and the resetting telescopic end extends out of the first mounting cavity through the upper bayonet;

the end of the driving telescopic end is provided with a fixed clamping block, the fixed clamping block is perpendicular to the driving telescopic end, the resetting telescopic end sleeve is provided with a sliding clamping block, the sliding clamping block is perpendicular to the resetting telescopic end, and the lengths of the fixed clamping block and the sliding clamping block are respectively greater than the lengths of the upper bayonet and the lower bayonet.

5. A washing machine door lock according to claim 4, further comprising a reset release member movably mounted on an outside of the base and adjacent to the first transmission structure;

the resetting unlocking piece comprises a resetting arm and a resetting sub-arm, the resetting arm is in an arc bending shape, one end of the resetting arm is fixedly connected to the upper end of the base, the other end of the resetting arm can be movably mounted at the left end of the base up and down, the resetting sub-arm is a branch of the resetting arm, a resetting through hole is formed in the upper end of the base, the free end of the resetting sub-arm extends downwards into the cavity of the base through the resetting through hole, and the free end of the resetting sub-arm is located right above the resetting telescopic end of the resetting structure and is not in contact with the resetting telescopic end;

when external force acts on the reset arm to enable the reset sub-arm to move, the reset sub-arm moves to abut against the reset telescopic end of the reset structure.

6. The washing machine door lock according to claim 2, wherein the second transmission mechanism further comprises a second spring, a second mounting cavity is formed in the second slider, the second spring is horizontally mounted in the second mounting cavity, the left end of the second spring abuts against the left end of the second mounting cavity, and the right end of the second spring abuts against the limiting block.

7. The washing machine door lock according to claim 3, wherein the third transmission mechanism further comprises a third spring, a third mounting cavity is formed in the third slider, the third spring is vertically mounted in the third mounting cavity, the upper end of the third spring abuts against the cavity wall of the cavity, and the lower end of the third spring abuts against the lower end of the third mounting cavity.

8. The washing machine door lock according to claim 1, wherein the locking hook comprises a rotating shaft, a push-pull part, a connecting part and a limiting part, the push-pull part, the connecting part and the limiting part are sequentially connected to form a V-shaped component, and the rotating shaft is arranged at an inner angle of the V-shaped component;

the cover plate is provided with an installation opening, the lock hook is limited and installed on the limiting block through the rotating shaft, the push-pull part protrudes out of the installation opening, and the limiting part abuts against the lower end of the third transmission mechanism;

when external force acts on the push-pull part, the lock hook rotates around the rotating shaft, and the limiting part rotates along with the rotation of the lock hook.

9. The washing machine door lock according to claim 1, wherein the circuit mechanism further comprises a linkage power supply and a plurality of pin pieces, the push switch is arranged above the linkage power supply, and the pin pieces are electrically connected with the linkage power supply;

the linkage power supply is turned on or off to control the connection or disconnection of the pin sheet and output a corresponding signal to a main control panel of the washing machine.

10. The washing machine door lock according to claim 1, wherein the covering surface of the cover plate is further provided with positioning columns, positioning holes are further formed in the cavity, the positioning columns correspond to the positioning holes one to one, and the positioning columns penetrate through the positioning holes;

the novel clamping device is characterized in that a plurality of buckles extend around the cover plate, a plurality of convex clamping blocks are arranged around the base, the buckles correspond to the clamping blocks one to one, and the cover plate is detachably clamped with the clamping blocks through the buckles.

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