CN218912543U - Locking device for electric appliance door lock and electric appliance door lock - Google Patents

Abstract

A locking device, electric appliance door lock and electric appliance for electric appliance door lock, locking device includes: the locking sliding block is arranged to be capable of moving from a first position to a second position when a door hook of the electric appliance door lock enters the locking notch, and in the second position, the locking sliding block is in a state of locking a preset structure to prevent the door hook from falling out of the locking notch; a spring arranged to apply an elastic force to the lock slider; the locking piece is arranged to be capable of being switched between a locking position and an unlocking position, when the locking slide block is in the second position, the locking piece is switched to the locking position to lock the locking slide block in the second position, and when the locking piece is switched to the unlocking position, the locking piece releases the locking slide block, and the locking slide block can be moved to the first position; and the driving mechanism is used for driving the locking piece to switch between the locking position and the unlocking position. According to the technical scheme, the stability of the electric appliance door lock can be improved, so that the use safety of an electric appliance is improved.

Description

Locking device for electric appliance door lock and electric appliance door lock

Technical Field

The application relates to the technical field of electric appliances, in particular to a locking device for an electric appliance door lock and the electric appliance door lock.

Background

The door lock of the electric appliance plays a vital role in the electric appliance, when the electric appliance works normally, in order to ensure safety, the working space inside the electric appliance is required to be a closed space, especially the electric appliance such as a washing machine, a dish washer and the like, if the door is opened at will during working, people (especially children) possibly carelessly touching the working parts inside the electric appliance bring danger, unnecessary damage is caused, and if the door lock of the electric appliance cannot be locked during normal working, articles inside the electric appliance can fly out of the working space, so that the product quality of the electric appliance is seriously influenced, and great inconvenience is brought to normal use.

To above-mentioned problem, people have designed various electrical apparatus locks for promote the factor of safety of electrical apparatus for electrical apparatus during operation door can lock automatically, can't open from inside, and after the door was normally opened, electrical apparatus can in time stop work.

How to design the locking device in the electric door lock to ensure the locking stability of the electric door, thereby ensuring that the door hook on the electric door cannot be separated from the locking notch is still the subject to be studied.

Disclosure of Invention

In view of the above, the application provides a locking device for an electric appliance door lock, the electric appliance door lock and an electric appliance, which have good stability and are beneficial to improving the safety of the electric appliance.

An aspect of the present application provides a locking device for an electric door lock, the locking device comprising:

the locking sliding block can move from a first position to a second position when a door hook of the electric appliance door lock enters the locking notch, and the locking sliding block is in a state of locking a preset structure to prevent the door hook from being out of the locking notch in the second position;

a spring arranged to apply an elastic force to the locking slider such that the locking slider moves resiliently between the first and second positions under the abutment of the spring;

a lock member provided to be switchable between a lock position and an unlock position, the lock member being switchable to the lock position to lock the lock slider in the second position when the lock slider is in the second position, the lock member being configured to release the lock slider to be movable to the first position when the door hook is out of the locking notch when the lock member is switched to the unlock position;

and a driving mechanism configured to drive the locking member to switch between the locking position and the unlocking position.

Optionally, a pressing block is arranged at one end of the locking sliding block, which is far away from the spring, and the pressing block is arranged to be in contact with the preset structure;

when the locking slide block is in the first position, the spring keeps the pressing block against the unlocking surface of the preset structure, and when the locking slide block is in the second position, the spring keeps the pressing block against the locking surface of the preset structure.

Optionally, a locking groove is formed in the locking sliding block, and a locking block is arranged on the locking piece;

when the locking sliding block moves to the second position and the locking piece is in the locking position, the locking block enters the locking groove to lock the locking sliding block in the second position;

when the locking piece is switched to the unlocking position, the locking block is separated from the locking groove to unlock the locking sliding block.

Optionally, the locking groove is a polygonal opening formed in the locking slider, and the locking block is a polygonal cylinder capable of being inserted into the polygonal opening.

Optionally, the locking piece is further provided with a top spring piece portion, and the top spring piece portion is configured to be capable of pushing against a spring piece of the electric door lock when the locking piece is located at the unlocking position, so that the spring piece is separated from a corresponding contact, and is released when the locking piece is located at the locking position, so that the spring piece contacts the contact.

Optionally, a chute is arranged on the locking piece, and the driving mechanism comprises a transmission rod which is positioned in the chute and can move along a preset direction;

the transmission rod drives the locking piece to move to the locking position when moving to a first preset position along the sliding groove, and drives the locking piece to move to the unlocking position when moving to a second preset position along the sliding groove.

Optionally, the driving mechanism further includes:

the driving main body is provided with a plurality of first meshing teeth;

a rotary fluted disc, wherein a plurality of second meshing teeth meshed with the first meshing teeth are arranged on the rotary fluted disc;

the external gear shell is provided with a through hole, the driving main body and the rotary fluted disc are axially arranged and movably arranged in the through hole, the transmission rod is arranged at one end of the driving main body extending out of the through hole, and the rotary fluted disc is arranged at one end of the driving main body located in the through hole; the external gear shell is provided with a guide structure for guiding the movement of the driving main body and the rotary fluted disc, and the external gear shell is also provided with a first guide inclined plane and a second guide inclined plane;

the spring is positioned at one end of the rotary fluted disc, which is away from the driving main body;

the electromagnetic coil is positioned at one end of the spring, which is away from the rotating fluted disc;

when the electromagnetic coil receives a first pulse signal, the driving main body pushes the second meshing teeth to move towards the electromagnetic coil through the first meshing teeth under the action of magnetic force, and when the rotating fluted disc is separated from the guiding structure, the first meshing teeth and the second meshing teeth are gradually meshed and the rotating fluted disc rotates in the meshing process; after the magnetic force of the electromagnetic coil disappears, the spring pushes the rotary fluted disc to move in a direction away from the electromagnetic coil, the rotary fluted disc moves to be matched with a first guide part of the guide structure under the guidance of the first guide inclined plane, and the driving main body is limited at a first limiting position, so that the transmission rod is kept at the first preset position;

when the electromagnetic coil receives a second pulse signal, the driving main body pushes the second meshing teeth to move towards the electromagnetic coil through the first meshing teeth under the action of magnetic force, and when the rotating fluted disc is separated from the guiding structure, the first meshing teeth are gradually meshed with the second meshing teeth and rotate in the meshing process; after the magnetic force of the electromagnetic coil disappears, the spring pushes the rotary fluted disc to move in the direction away from the electromagnetic coil, the rotary fluted disc moves to be matched with a second guide part of the guide structure under the guidance of the second guide inclined plane, and the driving main body is limited at a second limiting position, so that the transmission rod is kept at a second preset position.

Another aspect of the present application further provides an electric door lock, including a door hook and a door lock main body, where the door lock main body includes a lock case with a locking opening and a combination mechanism located in the lock case and used for combining with the door hook;

the door lock main body further comprises a locking device, the locking sliding block in the locking device is in the second position after the door hook enters the locking opening and is combined with the combining mechanism, and the driving mechanism drives the locking piece to be switched to the locking position, so that the locking sliding block locks the combining mechanism to prevent the door hook from being separated from the combining mechanism.

Optionally, the combining mechanism includes:

the lock hook can rotate relative to the lock shell;

one torsion arm of the torsion spring is connected with the lock shell, and the other torsion arm is connected with the lock hook so as to apply elasticity to the lock hook through the torsion spring;

when the door hook enters the locking opening, the door hook pushes the lock hook to rotate, when the door hook enters a preset position, the lock hook rotates to be combined with the door hook under the action of the elastic force of the torsion spring, and the locking sliding block moves to the second position to lock the lock hook, so that the lock hook keeps the combined state with the door hook.

The application also provides an electric appliance, the electric appliance comprises the electric appliance door lock, a door hook in the electric appliance door lock is arranged on the electric appliance door of the electric appliance, and the door lock main body is fixed on the electric appliance main body.

In the technical scheme that this application provided, locking device simple structure can lock and unblock work steadily moreover, and the reliability is good, is favorable to promoting the safety in utilization of electrical apparatus.

Additional features and advantages of the present application will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application, illustrate and explain the application and are not to be construed as limiting the application. In the drawings:

FIG. 1 is a schematic view of a locking device according to one embodiment of the present application;

FIG. 2 is a schematic view of an electrical box in an exploded state to show the drive mechanism in the locking device according to one embodiment of the present utility model;

FIG. 3 is a schematic view of a cut-away structure of an electric door lock according to one embodiment of the present application (showing the state of the drive mechanism when the locking device is in the unlocked state);

FIG. 4 is a schematic view of the sectional structure of the electric door lock (showing the state of the driving mechanism when the locking device is in the locked state);

FIG. 5 is a schematic illustration of a portion of the drive mechanism of the locking device in an exploded state;

fig. 6 is a schematic structural view of an external gear case;

FIG. 7 is a schematic view of a construction of a rotary tooth driving lever;

FIG. 8 is a schematic diagram of a rotary fluted disc;

FIG. 9 is a schematic view of the state of the partial components of the drive mechanism with the locking device in the unlocked state;

fig. 10 and 11 are schematic views of a part of the structure of the driving mechanism at the time of state transition, respectively;

FIG. 12 is a schematic view of the components of the drive mechanism in a locked state of the locking device;

fig. 13 and 14 are schematic views of a part of the structure of the driving mechanism at the time of state transition, respectively;

FIG. 15 is a schematic view of a portion of the drive mechanism of the locking device in an exploded state in another embodiment;

FIG. 16 is a schematic structural view of an appliance door lock according to one embodiment of the present application;

FIG. 17 is a schematic view of the appliance door lock of FIG. 16 from the other side;

fig. 18 is a schematic view of the appliance door lock of fig. 16 (with a portion of the housing removed);

FIG. 19 is a schematic view of the appliance door lock of FIG. 16 from another state shown (with a portion of the housing removed);

fig. 20 is a schematic view of an appliance door lock mounted on an appliance.

Description of the reference numerals

100-door hooks; 200-door lock body; 1-a binding mechanism; 11-latch hooks; 111-locking surface; 12-torsion springs; 13-a rotating shaft; 2-locking means; 21-a locking slide; 211-locking grooves; 212-briquetting; 22-springs; 23-locking member; 231-locking blocks; 232-sliding grooves; 233-top spring piece portion; 24-a driving mechanism; 241-electromagnetic coils; 242-plungers; 2421-a stem; 2422-a stop; 243-rotating the tooth drive rod; 2431-first tooth; 2432-guide projection; 2433-extension; 2434-mounting holes; 244-an outer gear case; 2441-guide groove; 2442-guide surface; 2443-first guide ramp; 2444-second guide ramp; 2445-ridge; 245-turning the fluted disc; 2451-second set of teeth; 2452-self-locking teeth; 246-rotating tooth shoe; 247-spring; 248-self-locking underwire; 249-a transmission rod; 3-a lock case; 31-a first housing; 32-a second housing; 33-an electrical box; 331-a box; 332-cover; 34-locking the mouth; 41-a first elastic piece; 42-first contacts; 51-a second spring plate; 52-a second contact; 61-shrapnel; 62 contacts.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure. In the case of no conflict, the present application, embodiments and features of the embodiments may be controlled in combination with each other.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application. In addition, "inner and outer" refer to inner and outer with respect to the outline of each component itself.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

Some household appliances include an appliance door and an appliance body, such as a washing machine or a dishwasher, to which the appliance door is locked by an appliance door lock during operation of the appliance.

The electric door lock includes a door hook 100 for being mounted on the electric door and a door lock body 200 (refer to fig. 16 and 17) mounted on the electric body, the door lock body 200 having a locking hole 34 for the door hook 100 to enter and a locking device for locking after the door hook 100 enters the locking hole 34, preventing the door hook 100 from being separated. That is, the door of the electric appliance cannot be opened after the locking device is locked, the controller of the electric appliance determines that the locking is successful and can be started, and after the electric appliance stops working, a signal is given, the locking device is unlocked, and at the moment, the door hook 100 can be separated from the locking opening, and the door of the electric appliance is opened.

The present application provides a locking device, as shown in fig. 1, the locking device 2 includes:

a locking slider 21, the locking slider 21 being arranged to be movable from a first position to a second position when the door hook 100 of the electric appliance door lock enters the locking notch, the locking slider 21 being arranged to lock a predetermined structure to prevent the door hook 100 from coming out of the locking notch; wherein the predetermined structure may be a latch hook 11 combined with the door hook 100 or other structures combined with the door hook 100 (e.g., a buckle for catching the door hook);

a spring 22, the spring 22 being arranged to exert an elastic force on the locking slider 21 such that the locking slider 21 is elastically moved between the first position and the second position under the abutment of the spring 22; when the door hook 100 enters the locking opening, the locking slide block 21 is forced to press the spring 22 to move to the second position (the locking slide block 21 can be forced to move to the second position by the linkage of the locking hook 11 when the door hook 100 enters), and the spring 22 always keeps applying elastic force to the locking slide block 21;

a locking piece 23, wherein the locking piece 23 is arranged to be capable of being switched between a locking position and an unlocking position, when the locking slide block 21 is in the second position, the locking piece 23 is switched to the locking position to lock the locking slide block 21 in the second position, when the locking piece 23 is switched to the unlocking position, the locking piece 23 releases the locking slide block 21, and the locking slide block 21 can be pushed to the pressing spring 22 and moved to the first position when the door hook 100 is out of the locking opening;

a drive mechanism 24, the drive mechanism 24 being arranged for driving the locking member 23 to switch between the locking position and the unlocking position.

When the locking device provided by the application is applied to an electric door lock, the working process of the locking device is as follows: under the state that the door hook 100 does not enter the locking notch, the locking slide block 21 is in the first position, when the door hook 100 enters the locking notch, the locking slide block 21 is driven to move to the second position, then when an electric appliance is started to work, the driving mechanism 24 drives the locking piece 23 to switch to the locking position, the locking slide block 21 is locked at the second position through the locking piece 23, the door hook 100 can not be separated from the locking notch in the working process of the electric appliance, and the working stability of the electric appliance door lock is effectively ensured.

The locking device provided by the application is simple in structure, reliable in locking performance and beneficial to improving the use safety of an electric appliance.

In one embodiment, an electric door lock employing the locking device is shown in fig. 16 to 19, wherein fig. 17 is a schematic view of the door lock body 200 shown in fig. 16 from the other side, and fig. 18 and 19 are schematic views of the door lock body 200 shown in fig. 16 with part of the housing of the lock case 3 removed and showing the internal structure. In this embodiment, the end of the locking slider 21 far away from the spring 22 is provided with the pressing block 212, the pressing block 212 is configured to contact with the preset structure, the preset structure in this embodiment is the lock hook 11 in the coupling mechanism 1, when the door hook 100 is not coupled with the coupling mechanism 1, the pressing block 212 of the locking slider 21 abuts against the unlocking surface of the lock hook 11 under the action of the spring 22, at this time, the locking slider 21 is in the first position (as shown in fig. 18), i.e. the state in which the locking slider 21 does not lock the lock hook 11, and when the door hook 100 enters the locking opening 34 of the lock case 3 to be coupled with the coupling mechanism 1, the door hook 100 pushes the lock hook 11, the lock hook 11 is turned over, and when the door hook 100 is blocked into the lock hook 11 under the action of the torsion spring 12, the pressing block 212 is pressed against the locking surface 111 of the lock hook 11 under the action of the elasticity of the spring 22, at this time, the locking slider 21 is in the second position (as shown in fig. 19), and then the locking piece 23 locks the locking slider 21 when the electrical appliance is started.

To enable the locking member 23 to lock the lock slider 21 in the second position, in one embodiment, as shown in fig. 1 (in combination with fig. 18 and 19), a lock groove 211 is provided on the lock slider 21, and a lock block 231 is provided on the locking member 23; when the lock slider 21 moves to the second position and the lock piece 23 is switched to the lock position, the lock block 231 enters the lock groove 211 to lock the lock slider 21 to the second position; when the lock piece 23 is shifted to the unlock position, the lock piece 231 is disengaged from the lock groove 211, and the lock of the lock slider 21 is released.

Wherein the locking groove 211 may be a notch or an opening, preferably, as shown in fig. 1, the locking groove 211 is a polygonal opening provided on the locking slider 21, and the locking block 231 is a polygonal cylinder capable of being inserted into the polygonal opening, and the locking slider 21 may be maintained in the second position by cooperation of the polygonal cylinder and the polygonal opening.

It will be appreciated that there are a variety of ways in which the locking member 23 may lock the locking slide 21 in the second position, for example, other forms of limiting structure may be provided on the locking member 23 that prevent the locking slide 21 from returning to the first position.

Optionally, the locking piece 23 is further provided with a top spring piece portion 233, as shown in fig. 1 and 2, where the top spring piece portion 233 is configured to be capable of pushing against a spring piece 61 of the electric door lock when the locking piece 23 is in the unlocking position, so that the spring piece 61 is separated from a corresponding contact 62, and when the locking piece 23 is in the locking position, the spring piece 61 is released, so that the spring piece 61 contacts the contact 62, and a circuit is completed, so that the electric appliance is started.

To enable the locking member 23 to move between the locked position and the unlocked position, in one embodiment, as shown in fig. 1 and 2, a chute 232 is provided on the locking member 23, and the driving mechanism 24 includes a transmission rod 249 that is located in the chute 232 and is movable in a preset direction. When the driving rod 249 moves to a first preset position along the sliding groove 232, the locking piece 23 is driven to move to the locking position, and when the driving rod 249 moves to a second preset position along the sliding groove 232, the locking piece 23 is driven to move to the unlocking position.

In this embodiment, the drive mechanism 24 further includes, as shown in fig. 3 and 4 (and referring to fig. 5 to 15):

a drive body having a plurality of first engagement teeth 2431 disposed thereon;

a rotary fluted disc 245, wherein a plurality of second meshing teeth 2451 meshed with the first meshing teeth 2431 are arranged on the rotary fluted disc 245;

the external gear housing 244, the external gear housing 244 is provided with a through hole, the driving main body and the rotary fluted disc 245 are axially arranged and movably installed in the through hole, the transmission rod 249 is arranged on one end of the driving main body extending out of the through hole, and the rotary fluted disc 245 is arranged on one end of the driving main body located in the through hole; wherein, a guiding structure for guiding the movement of the driving body and the rotary fluted disc 245 is arranged on the outer gear housing 244, and a first guiding inclined surface 2443 and a second guiding inclined surface 2444 are arranged on the outer gear housing 244;

a spring 247, the spring 247 is positioned at one end of the rotary tooth disc 245 away from the rotary tooth driving rod 243;

a solenoid 241, the solenoid 241 being located at an end of the spring 247 facing away from the rotating disc 245;

when the electromagnetic coil 241 receives the first pulse signal, the driving main body pushes the second meshing teeth 2451 to move towards the electromagnetic coil 241 through the first meshing teeth 2431 under the action of magnetic force, and when the rotary fluted disc 245 is separated from the guiding structure, the first meshing teeth 2431 and the second meshing teeth 2451 are gradually meshed and the rotary fluted disc 245 rotates in the meshing process; after the magnetic force of the electromagnetic coil 241 disappears, the spring 247 pushes the rotary fluted disc 245 to move in a direction away from the electromagnetic coil 241, the rotary fluted disc 245 moves to be matched with a first guide part in the guide structure under the guidance of the first guide inclined surface 2443, the driving main body is limited at a first limiting position, and in the state shown in fig. 4 and 12, the transmission rod 249 is kept at the first preset position, so that the locking piece 23 is driven to move to the locking position.

When the electromagnetic coil 241 receives the second pulse signal, the driving main body pushes the second meshing teeth 2451 to move towards the electromagnetic coil 241 through the first meshing teeth 2431 under the action of magnetic force, when the rotary fluted disc 245 is separated from the guiding structure, the first meshing teeth 2431 and the second meshing teeth 2451 are gradually meshed, and in the meshing process, the rotary fluted disc 245 rotates; after the magnetic force of the electromagnetic coil 241 disappears, the spring 247 pushes the rotating fluted disc 245 to move in a direction away from the electromagnetic coil 241, the rotating fluted disc 245 moves to be matched with and limited by a second guiding part in the guiding structure under the guidance of the second guiding inclined surface 2444, and the driving main body is limited at a second limiting position, as shown in fig. 3 and 9, so that the transmission rod 249 is kept at a second preset position, and the locking piece 23 is driven to move to the unlocking position.

As shown in fig. 3 and 4 (in conjunction with fig. 5), the driving body may include a rotary tooth driving rod 243 and a plunger 242, one end of the rotary tooth driving rod 243 protruding from the through hole of the outer gear case 244, a plurality of first engagement teeth 2431 being provided at one end of the rotary tooth driving rod 243 protruding into the through hole, and a rotary tooth disc 245 being provided at one end of the rotary tooth driving rod 243 protruding into the through hole. The plunger 242 is configured to be absorbed by the magnetic force of the electromagnetic coil 241, and the plunger 242 can drive the rotating tooth driving rod 243 to move towards the electromagnetic coil 242 under the action of the magnetic force, so that the rotating tooth driving rod 243 pushes the rotating tooth disc 245 to move towards the electromagnetic coil 241.

Alternatively, as shown in fig. 5, the plunger 242 includes a stopper 2422 and a lever 2421 stopper 2422 to stop on an end of the rotary tooth plate 245 of the rotary tooth driving rod 243, the lever 2421 being configured to be able to pass through the rotary tooth driving rod 243 and the rotary tooth plate 245 from an end of the rotary tooth driving rod 243 remote from the rotary tooth plate 245 so as to be able to be absorbed by the electromagnetic coil 241; wherein, the rotary tooth driving rod 243 is provided with a mounting hole 2434 for mounting the transmission rod 249.

Alternatively, in another embodiment, as shown in fig. 15, one end of the plunger 242 is disposed through the rotating tooth driving rod 243 and the rotating tooth disc 245 so as to be absorbed by the electromagnetic coil 241, the driving rod 249 is disposed on the other end, and the driving rod 249 is stopped at the end of the rotating tooth driving rod 243 far from the rotating tooth disc 245, so that when the electromagnetic coil 241 has magnetic force, the plunger 242 can drive the rotating tooth driving rod 243 to move toward the electromagnetic coil 241, and when the magnetic force disappears, the rotating tooth driving rod 243 can drive the plunger 242 to move far from the electromagnetic coil 241.

Alternatively, the plunger 242 and the rotary tooth driving rod 243 may be provided separately, or the plunger 242 and the rotary tooth driving rod 243 may be provided to be fixed together. To reduce weight and cost, the rotating tooth driving rod 243 may be made of plastic, and only the plunger 242 may be made of iron material that can be magnetically attracted, and then fixed together. Of course, the electromagnetic coil-suctionable component of the rotary tooth driving rod 243 and the plunger 242 integrally formed is not excluded.

Further, referring to fig. 6 (in combination with fig. 9 and 12), the first guiding portion in the guiding structure on the outer gear housing 244 is a guiding groove 2441 provided on the inner wall of the outer gear housing 244, a guiding protrusion 2432 sliding in cooperation with the guiding groove 2441 is provided on the rotating gear driving rod 243 of the driving body, and the self-locking teeth 2452 on the rotating gear disc 245 are provided to be capable of sliding in cooperation with the guiding groove 2441. In the locking process, when the spring 247 drives the rotating fluted disc 245 to move away from the electromagnetic coil 241, the self-locking tooth 2452 of the rotating fluted disc 245 can enter the guide groove 2441 under the guidance of the first guide inclined surface 2443 and further move along the guide groove 2441 until the driving main body is limited at the first limiting position.

Optionally, the second guiding portion in the guiding structure is a guiding surface 2442 provided on the outer gear casing 244 and aligned with the extending direction of the guiding groove 2441, and the guiding surface 2442 is disposed at an angle with the second guiding inclined surface 2444. In the unlocking process, when the spring 247 drives the rotary fluted disc 245 to move away from the electromagnetic coil 241, the self-locking tooth 2452 of the rotary fluted disc 245 moves to the self-locking tooth 2452 of the rotary fluted disc 245 under the guidance of the second guiding inclined surface 2444, and the self-locking tooth 2452 of the rotary fluted disc 245 cooperates with the guiding surface 2442 and the second guiding inclined surface 2444 to be limited, so that the driving main body is limited at the second limiting position. It will be appreciated that the second guiding portion may also be a guiding groove disposed adjacent to the second guiding inclined surface 2444, that is, the self-locking tooth 2452 moves to the guiding groove under the guidance of the second guiding inclined surface 2444 and then is limited when moving to the preset position.

Wherein, referring to fig. 6 (combining fig. 9 and 12), ridges 2445 protruding radially inward and extending longitudinally are provided at intervals on the inner wall of the through hole of the external gear case 244 (only the ridge 2445 is shown in fig. 9 and 12 for clarity of the structure, the portion of the external gear case located outside the ridge 2445 is not shown), a guide groove 2441 is formed between adjacent ridges 2445, a first guide slope 2443 and a second guide slope 2444 are provided on the end face of the ridge 2445 facing one end of the electromagnetic coil 241, and a guide face 2442 is provided between the first guide slope 2443 and the second guide slope 2444.

Optionally, in this embodiment, because the rotating toothed disc 245 rotates, in order to avoid unstable operation caused by direct contact between the rotating toothed disc 245 and the spring 247, the driving mechanism 24 preferably further includes a rotating tooth bottom bracket 246, the rotating tooth bottom bracket 246 is disposed between the spring 247 and the rotating toothed disc 245, the driving mechanism 24 further includes a self-locking bottom bracket 248, and the self-locking bottom bracket 248 is disposed at one end of the spring 247 facing away from the rotating tooth bottom bracket 246, that is, two ends of the spring 247 respectively abut against the rotating tooth bottom bracket 246 and the self-locking bottom bracket 248. The self-locking shoe 248 is configured to be fixed on the outer gear case 244, and may be specifically fastened and fixed with a fastening slot provided on the outer gear case 244 by a fastening buckle provided on the outer peripheral surface of the self-locking shoe 248.

Further, as shown in fig. 7, the rotating tooth driving rod 243 extends from the position where the first engaging tooth 2431 is disposed toward the electromagnetic coil 241 to form an extension portion 2433, and the rotating tooth disc 245 and the rotating tooth bottom bracket 246 are respectively in a ring structure, and the rotating tooth disc 245 and the rotating tooth bottom bracket 246 are sleeved on the extension portion 2433 and can axially move on the extension portion 2433.

To enable the driving body to be limited at the first limiting position, in one embodiment, the rotary tooth driving rod 243 is limited by the outer tooth case 244 when moving in a direction away from the electromagnetic coil 241, that is, a limiting portion for limiting the rotary tooth driving rod 243 is provided at a preset position on the outer tooth case 244, and the rotary tooth driving rod 243 is limited at the first limiting position by the limiting portion during moving. In another embodiment, it is also possible to provide that the rotary shoe 246 is limited by the outer gear housing 244 when moving in a direction away from the electromagnetic coil 241 such that the drive body is limited in the first limit position, as shown in fig. 12, the radial collar of the rotary shoe 246 catches on one end of the ridge 2445 of the outer gear housing 244 having the first and second guide slopes 2443, 2444, such that the rotary shoe 246 cannot continue to push the rotary toothed disc 245 and the rotary toothed drive rod 243, so that the rotary toothed drive rod 243 and the plunger 242 remain in the first limit position.

According to another aspect of the present application, there is also provided an electric door lock, as shown in fig. 16 and 17, including a door hook 100 and a door lock main body 200, wherein the door lock main body 200 includes a lock case 3 having a locking opening 34 and a coupling mechanism 1 located in the lock case 3 for coupling with the door hook 100;

the door lock main body 200 further includes the locking device 2 as described above, in which the locking slider 21 is in the second position after the door hook 100 enters the locking slot and is combined with the combining mechanism 1, and the driving mechanism 24 drives the locking piece 23 to be shifted to the locking position, so that the locking slider 21 locks the combining mechanism to prevent the door hook 100 from being separated from the combining mechanism.

In one embodiment, referring to fig. 16-19, the coupling mechanism 1 includes:

a locking hook 11, said locking hook 11 being rotatable relative to the lock housing 3 about a rotation axis 13;

a torsion spring 12, one torsion arm of the torsion spring 12 is connected to the lock housing 3, and the other torsion arm is connected to the lock hook 11, so as to apply elastic force to the lock hook 11 through the torsion spring 12;

when the door hook 100 enters the locking opening, the door hook 100 pushes the lock hook 11 to rotate, when the door hook 100 enters the preset position, the lock hook 11 rotates to be combined with the door hook 100 under the elastic force of the torsion spring 12, the locking sliding block 21 moves to the second position to lock the lock hook 11, and when the electric appliance is started, the driving mechanism 24 drives the locking piece 23 to the locking position to lock the locking sliding block 21 to the second position.

It will be appreciated that the coupling mechanism 1 capable of coupling with the door hook 100 is not limited to the configuration shown in the present embodiment, and for example, the coupling mechanism may be a buckle capable of being engaged with the door hook, and after the buckle is engaged with the door hook 100, the locking device 2 is configured to lock the buckle to prevent the buckle from deforming to cause the door hook 100 to be disengaged from the buckle.

In one embodiment, the lock case 3 includes a first case 31, a second case 32, and an electrical box 33, and fig. 18 and 19 respectively show a state in which the electrical door lock is removed from the first case 31, and fig. 2 shows that the electrical box 33 includes a box body 332 and a box cover 331, and the driving mechanism 24 and the spring and the contacts as the circuit switch in the electrical assembly are located in the electrical box 33.

The following describes a specific process for locking and unlocking an electric appliance door lock provided by the present application according to one specific embodiment.

Locking:

the door hook 100 enters the locking opening 34 of the door lock main body 200 and is combined with the locking hook 11 of the combining mechanism 1, the locking hook 11 clamps the door hook 100 under the elastic force of the torsion spring 12, at this time, the locking slide block 21 in the locking device 2 moves from the first position to the second position, and the pressing block 212 thereon presses against the locking surface 111 of the locking hook 11. When the door hook 100 enters the locking opening 34, the linkage mechanism acts (the linkage mechanism is not the focus of the application and is realized by a person skilled in the art, and is not specifically described herein), so that the first elastic sheet 41 contacts the first contact 42 (i.e. the first switch is closed) and the second elastic sheet 51 contacts the second contact 52 (i.e. the second switch is closed), referring to fig. 1, the locking device 2 is powered on, after the electric appliance is started, the electromagnetic coil 241 receives a first pulse signal, the plunger 242 drives the rotating tooth driving rod 243 and the rotating tooth disc 245 to move towards the electromagnetic coil 241 under the action of magnetic force (from the state shown in fig. 9), the rotating tooth driving rod 243 moves along the first guide portion (i.e. the guide groove 2441), the self-locking tooth 2452 of the rotating tooth disc 245 moves along the second guide portion (i.e. the guide surface 2442), and when the rotating tooth disc 245 is separated from the second guide portion (referring to fig. 10), the first engaging tooth 2431 of the rotating tooth driving rod 243 is gradually engaged with the second engaging tooth 51 of the rotating tooth 245, and the rotating tooth 245 rotates during the engagement process; after the magnetic force of the electromagnetic coil 241 disappears, the spring 247 pushes the rotating tooth holder 246 and pushes the rotating tooth plate 245 and the rotating tooth driving rod 243 to move in a direction away from the electromagnetic coil 241, in the process, the self-locking tooth 2452 of the rotating tooth plate 245 gradually moves along the first guide inclined surface 2443 corresponding to the outer tooth shell 244 from the first guide inclined surface 2443 into the guide groove 2441 (refer to fig. 11), after the spring 247 pushes the rotating tooth holder 246 against the tooth part of the outer tooth shell 244 (the state shown in fig. 12), the driving rod 249 on the rotating tooth driving rod 243 moves to the first preset position along the sliding groove 232 of the locking piece 23, thereby driving the locking piece 23 to move to the locking position, and the locking piece 231 of the locking piece 23 is inserted into the locking groove 211 of the locking slide 21 to lock the locking slide 21 at the second position. At this time, the top spring piece 233 on the locking piece 23 releases the spring piece 61, so that the spring piece 61 contacts the contact 62 (i.e., the third switch is turned off), and the electric appliance starts to operate.

And (3) unlocking:

after the electric appliance finishes working, the electromagnetic coil 241 receives a second pulse signal, the plunger 242 pulls the rotating tooth driving rod 243 under the action of magnetic force, the rotating tooth driving rod 243 pushes the rotating tooth disc 245 to move towards the electromagnetic coil 241 along the guide groove 2441 (move from the state shown in fig. 12), when the rotating tooth disc 245 is separated from the constraint of the guide groove 2441 (refer to the state shown in fig. 13), the first meshing tooth 2431 of the rotating tooth driving rod 243 is gradually meshed with the second meshing tooth 2451 of the rotating tooth disc 245, and the rotating tooth disc 245 is driven to rotate in the meshing process; after the magnetic force of the electromagnetic coil 241 disappears, the spring 247 pushes the rotating fluted disc 245 to move in a direction away from the electromagnetic coil 241, in the process, the self-locking tooth 2452 of the rotating fluted disc 245 gradually moves along the second guiding inclined surface 2444 from the second guiding inclined surface 2444 corresponding to the outer gear shell 244 to the position that the self-locking tooth 2452 is completely matched with the guiding surface 2442 and the second guiding inclined surface 2444, referring to fig. 14, at this time, the rotating fluted disc 245 and the rotating tooth driving rod 243 are limited at the second limiting position (i.e. return to the state shown in fig. 9), the driving rod 249 moves to the second preset position, thereby driving the locking piece 23 to move to the unlocking position, and the top elastic piece 233 on the locking piece 23 is propped against the elastic piece 61, so that the elastic piece 61 and the contact 62 are separated, and the electric appliance stops working. At this time, the locking block 231 on the locking piece 23 is separated from the locking groove 211 of the locking slider 21, the locking slider 21 is unlocked, the door hook 100 can be separated from the coupling mechanism 1, when the door hook 10 is separated from the locking notch, the locking slider 21 moves to the first position, and the linkage mechanism acts, so that the first elastic sheet 41 and the second contact 42 are separated, and the second elastic sheet 51 is separated from the second contact 52.

According to still another aspect of the present application, there is also provided an electric appliance including the electric appliance door lock as described above, as shown in fig. 20, in which the door hook 100 is provided on the electric appliance door of the electric appliance, and the door lock body 200 is fixed to the electric appliance body.

The foregoing description of the preferred embodiments of the present utility model is not intended to limit the utility model to the precise form disclosed, and any modifications, equivalents, and alternatives falling within the spirit and principles of the present utility model are intended to be included within the scope of the present utility model.

Claims (10)

1. A locking device for an electric door lock, the locking device comprising:

the locking sliding block can move from a first position to a second position when a door hook of the electric appliance door lock enters the locking notch, and the locking sliding block is in a state of locking a preset structure to prevent the door hook from being out of the locking notch in the second position;

a spring arranged to apply an elastic force to the locking slider such that the locking slider moves resiliently between the first and second positions under the abutment of the spring;

a lock member provided to be switchable between a lock position and an unlock position, the lock member being switchable to the lock position to lock the lock slider in the second position when the lock slider is in the second position, the lock member being configured to release the lock slider to be movable to the first position when the door hook is out of the locking notch when the lock member is switched to the unlock position;

and a driving mechanism configured to drive the locking member to switch between the locking position and the unlocking position.

2. The locking device according to claim 1, wherein an end of the locking slider remote from the spring is provided with a press block, the press block being arranged to be in contact with the preset structure;

when the locking slide block is in the first position, the spring keeps the pressing block against the unlocking surface of the preset structure, and when the locking slide block is in the second position, the spring keeps the pressing block against the locking surface of the preset structure.

3. The locking device according to claim 1, wherein the locking slider is provided with a locking groove, and the locking piece is provided with a locking block;

when the locking sliding block moves to the second position and the locking piece is in the locking position, the locking block enters the locking groove to lock the locking sliding block in the second position;

when the locking piece is switched to the unlocking position, the locking block is separated from the locking groove to unlock the locking sliding block.

4. A locking device according to claim 3, wherein the locking groove is a polygonal opening provided in the locking slider, and the locking block is a polygonal cylinder capable of being inserted into the polygonal opening.

5. The locking device of claim 1, wherein the locking member is further provided with a top spring portion configured to be able to bear against a spring of the appliance door lock when the locking member is in the unlocked position, such that the spring is disengaged from a corresponding contact, and to be released when the locking member is in the locked position, such that the spring contacts the contact.

6. The locking device according to claim 1, wherein a chute is provided on the locking member, and the driving mechanism comprises a transmission rod which is located in the chute and is movable in a preset direction;

the transmission rod drives the locking piece to move to the locking position when moving to a first preset position along the sliding groove, and drives the locking piece to move to the unlocking position when moving to a second preset position along the sliding groove.

7. The lockout device of claim 6, wherein the drive mechanism further comprises:

the driving main body is provided with a plurality of first meshing teeth;

a rotary fluted disc, wherein a plurality of second meshing teeth meshed with the first meshing teeth are arranged on the rotary fluted disc;

the external gear shell is provided with a through hole, the driving main body and the rotary fluted disc are axially arranged and movably arranged in the through hole, the transmission rod is arranged at one end of the driving main body extending out of the through hole, and the rotary fluted disc is arranged at one end of the driving main body located in the through hole; the external gear shell is provided with a guide structure for guiding the movement of the driving main body and the rotary fluted disc, and the external gear shell is also provided with a first guide inclined plane and a second guide inclined plane;

the spring is positioned at one end of the rotary fluted disc, which is away from the driving main body;

the electromagnetic coil is positioned at one end of the spring, which is away from the rotating fluted disc;

when the electromagnetic coil receives a first pulse signal, the driving main body pushes the second meshing teeth to move towards the electromagnetic coil through the first meshing teeth under the action of magnetic force, and when the rotating fluted disc is separated from the guiding structure, the first meshing teeth and the second meshing teeth are gradually meshed and the rotating fluted disc rotates in the meshing process; after the magnetic force of the electromagnetic coil disappears, the spring pushes the rotary fluted disc to move in a direction away from the electromagnetic coil, the rotary fluted disc moves to be matched with a first guide part of the guide structure under the guidance of the first guide inclined plane, and the driving main body is limited at a first limiting position, so that the transmission rod is kept at the first preset position;

when the electromagnetic coil receives a second pulse signal, the driving main body pushes the second meshing teeth to move towards the electromagnetic coil through the first meshing teeth under the action of magnetic force, and when the rotating fluted disc is separated from the guiding structure, the first meshing teeth are gradually meshed with the second meshing teeth and rotate in the meshing process; after the magnetic force of the electromagnetic coil disappears, the spring pushes the rotary fluted disc to move in the direction away from the electromagnetic coil, the rotary fluted disc moves to be matched with a second guide part of the guide structure under the guidance of the second guide inclined plane, and the driving main body is limited at a second limiting position, so that the transmission rod is kept at a second preset position.

8. The electric door lock is characterized by comprising a door hook and a door lock main body, wherein the door lock main body comprises a lock shell with a locking opening and a combining mechanism which is positioned in the lock shell and is used for combining with the door hook;

the door lock main body further comprises a locking device according to any one of claims 1 to 7, wherein after the door hook enters the locking opening and is combined with the combining mechanism, the locking slide block in the locking device is in the second position, and the driving mechanism drives the locking piece to be switched to the locking position, so that the locking slide block locks the combining mechanism to prevent the door hook from being separated from the combining mechanism.

9. The appliance door lock of claim 8, wherein the coupling mechanism comprises:

the lock hook can rotate relative to the lock shell;

one torsion arm of the torsion spring is connected with the lock shell, and the other torsion arm is connected with the lock hook so as to apply elasticity to the lock hook through the torsion spring;

when the door hook enters the locking opening, the door hook pushes the lock hook to rotate, when the door hook enters a preset position, the lock hook rotates to be combined with the door hook under the action of the elastic force of the torsion spring, and the locking sliding block moves to the second position to lock the lock hook, so that the lock hook keeps the combined state with the door hook.

10. An electric appliance, characterized in that the electric appliance comprises an electric appliance door lock according to claim 8 or 9, a door hook in the electric appliance door lock being provided on the electric appliance door of the electric appliance, the door lock body being fixed on the electric appliance body.

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