CN219196986U - Driving mechanism and electric appliance door lock - Google Patents

Abstract

A driving mechanism and an electric door lock, the driving mechanism includes: the driving main body is provided with a plurality of first meshing teeth; a rotary fluted disc, on which a plurality of second meshing teeth meshed with the first meshing teeth are arranged; the external gear shell is provided with a through hole, the driving main body and the rotary fluted disc are movably arranged 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 far away from the driving main body; and the electromagnetic coil is positioned at one end of the spring, which is far away from the rotating fluted disc. According to the technical scheme, the driving main body is located at the first limiting position, locking of the electric appliance door lock can be achieved, the driving main body is located at the second limiting position, unlocking of the electric appliance door lock can be achieved, locking of the electric appliance door lock is safe and reliable, and use safety of an electric appliance can be improved.

Description

Driving mechanism and electric appliance door lock

Technical Field

The application relates to the technical field of electric appliances, in particular to a driving mechanism and an 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 an electric door lock, the locking stability of the electric door is ensured, and therefore, the problem that the door hook on the electric door cannot be separated from the locking notch is still needed to be studied.

Disclosure of Invention

In view of this, this application provides a actuating mechanism and electric appliance door lock for electric appliance door locking stability is good, does benefit to the security that improves the electrical apparatus.

An aspect of the present application provides a driving mechanism including:

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, wherein 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 drives the rotary fluted disc to move towards the electromagnetic coil under the action of magnetic force, and when the rotary fluted disc is separated from the guide structure, the first meshing teeth are gradually meshed with the second meshing teeth and the rotary 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;

when the electromagnetic coil receives a second pulse signal, the driving main body drives the rotary fluted disc to move towards the electromagnetic coil under the action of magnetic force, and when the rotary fluted disc is separated from the guide structure, the first meshing teeth are gradually meshed with the second meshing teeth and the rotary 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 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.

Optionally, the driving body includes a tooth rotating driving rod and a plunger, wherein one end of the tooth rotating driving rod extends out of the through hole, a plurality of first meshing teeth are arranged at one end of the tooth rotating driving rod extending into the through hole, and the tooth rotating disc is arranged at one end of the tooth rotating driving rod extending into the through hole;

the plunger is arranged to be adsorbed by the magnetic force of the electromagnetic coil, and the plunger can drive the rotating tooth driving rod to push the rotating tooth disc to move towards the electromagnetic coil under the action of the magnetic force.

Optionally, the plunger includes a stopper portion that is stopped on an end of the rotary tooth driving rod away from the rotary tooth disc, and a rod portion that is disposed so as to be capable of passing through the rotary tooth driving rod and the rotary tooth disc from an end of the rotary tooth driving rod away from the rotary tooth disc so as to be capable of being absorbed by the electromagnetic coil; wherein, the tooth rotating driving rod is provided with a mounting structure for mounting the transmission rod;

or one end of the plunger penetrates through the gear rotating driving rod and the gear rotating disc so as to be adsorbed by the electromagnetic coil, a transmission rod used for stopping the gear rotating driving rod is arranged at the other end of the plunger, and the transmission rod stops at the end part, far away from the gear rotating disc, of the gear rotating driving rod.

Optionally, the driving mechanism further comprises a tooth rotating shoe and a self-locking shoe, the tooth rotating shoe is arranged between the spring and the tooth rotating disc, the self-locking shoe is arranged at one end of the spring, which is away from the tooth rotating shoe, and the self-locking shoe is arranged to be fixed on the outer tooth shell.

Optionally, the tooth rotating driving rod extends from a position provided with the first meshing teeth towards the direction of the electromagnetic coil to form an extension part, the tooth rotating disc and the tooth rotating base support are respectively of annular structures, and the tooth rotating disc and the tooth rotating base support are axially movably sleeved on the extension part.

Optionally, one of the outer wall of the extension part and the inner wall of the rotary tooth bottom bracket is provided with a plurality of first clamping grooves, the other one is provided with a plurality of first buckles, the rotary tooth bottom bracket and the extension part are in fit and clamping connection with the first clamping grooves through the first buckles, and the first buckles can move in the axial direction relative to the first clamping grooves;

and/or, a plurality of second clamping grooves are formed in one of the inner wall of the outer gear shell and the outer wall of the self-locking bottom support, a plurality of second buckles are arranged on the other one of the inner wall of the outer gear shell and the outer gear shell, and the self-locking bottom support and the outer gear shell are clamped together through the second clamping grooves and the second buckles in a matching mode.

Optionally, the first guiding part comprises at least two parallel extending guiding grooves arranged on the external gear shell, guiding protrusions matched with the guiding grooves are arranged on the driving main body, guiding teeth matched with the guiding grooves and radially protruding are formed on the outer peripheral surface of the rotary fluted disc, and at one end of the rotary fluted disc, which is provided with the second meshing teeth, the guiding teeth are provided with guiding tooth surfaces consistent with the tooth surfaces of the corresponding second meshing teeth;

the guide teeth are arranged to be guided by the first guide ramp into the guide groove when moving in a direction away from the solenoid.

Optionally, the second guiding part is a guiding surface which is arranged on the external gear shell and forms an included angle with the second guiding inclined surface, and the extending direction of the guiding surface is consistent with the extending direction of the guiding groove;

the guide teeth are arranged to be capable of moving into an included angle clamped between the guide surface and the second guide inclined surface under the guidance of the second guide inclined surface when moving in a direction away from the electromagnetic coil, so that the driving main body is limited at the second limiting position.

Optionally, the rotating tooth driving rod is limited by the outer tooth shell to enable the driving main body to be limited at the first limiting position when moving along a direction away from the electromagnetic coil, or the rotating tooth bottom bracket is limited by the outer tooth shell to enable the driving main body to be limited at the first limiting position when moving along a direction away from the electromagnetic coil.

According to another aspect of the present application, there is further provided 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, a coupling mechanism located in the lock case for coupling with the door hook, and a locking mechanism;

the door lock main body further comprises the driving mechanism, when the door hook enters the locking opening and is combined with the combining mechanism, and the electromagnetic coil receives a first pulse signal, the driving main body of the driving mechanism moves to the first limiting position to drive the locking mechanism to lock the combining mechanism, and when the electromagnetic coil receives a second pulse signal, the driving main body moves to the second limiting position to drive the locking mechanism to unlock the combining mechanism.

The driving mechanism can realize locking and unlocking of the locking mechanism in the electric appliance door lock, has good reliability and is beneficial to improving the use safety of electric appliances.

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 driving mechanism (a state where a locking mechanism is locked) according to an embodiment of the present application;

fig. 2 is a schematic structural view of the driving mechanism (a state when the locking mechanism is unlocked);

FIG. 3 is a schematic illustration of a drive mechanism in an exploded state (solenoid not shown) according to one embodiment of the present application;

fig. 4 is a schematic structural view of an external gear case;

FIG. 5 is a schematic view of the structure of a rotary tooth driving lever;

FIG. 6 is a schematic diagram of a structure of a rotary fluted disc;

FIG. 7 is a schematic view of a rotary tooth shoe;

FIG. 8 is a schematic view of a self-locking shoe;

fig. 9 is a schematic view of a part of the drive mechanism (such that the lock mechanism is in an 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 a portion of the structure of the drive mechanism (such that the locking mechanism is in a locked state);

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 an exploded view of a drive mechanism (electromagnetic coil not shown) according to another embodiment of the present application;

fig. 16 is a schematic structural view (omitted part structure) of an electric door lock according to an embodiment of the present application.

Description of the reference numerals

1-an outer gear case; 11-a guide groove; 12-a guide surface; 13-a first guiding ramp; 14-a second guiding ramp; 15-ridge; 16-a second chute; 17-a second clamping groove; 2-rotating tooth driving rod; 21-a first meshing tooth; 22-guiding protrusions; 23-extensions; 231-a first chute; 232-a first card slot; 24-mounting holes; 3-a plunger; 31-a stem; 32-a stop; 4-turning the fluted disc; 41-a second meshing tooth; 42-guide teeth; 5-rotating tooth bottom support; 51-a first slider; 52-first catch; 6-a spring; 7-self-locking bottom support; 71-a second slider; 72-a second catch; 8-electromagnetic coils; 9-a transmission rod; 20-locking piece; 201-locking blocks; 202-a chute; 30-locking the slide block; 301-locking grooves; 40-springs; 50-latch hooks; 60-torsion spring; 70-door hook.

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 comprises a door hook arranged on the electric door and a door lock main body arranged on the electric main body, wherein the door lock main body is provided with a locking opening for the door hook to enter and a locking mechanism, and the locking mechanism is used for locking after the door hook enters the locking opening to prevent the door hook from falling off. That is, the electric appliance door cannot be opened after the locking mechanism 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 mechanism is unlocked, and at the moment, the door hook can be separated from the locking opening, and the electric appliance door is opened.

To enable the locking mechanism to lock and unlock, the present application provides a driving mechanism for driving the locking mechanism to act to achieve locking and unlocking, as shown in fig. 1-3, the driving mechanism includes:

a driving body provided with a plurality of first engagement teeth 21;

a rotary fluted disc 4, wherein a plurality of second meshing teeth 41 meshed with the first meshing teeth 21 are arranged on the rotary fluted disc 4;

the external gear shell 1 is provided with a through hole, the driving main body and the rotary fluted disc 4 are axially arranged and movably arranged in the through hole, wherein the external gear shell 1 is provided with a guide structure for guiding the movement of the driving main body and the rotary fluted disc 4, and the external gear shell 1 is also provided with a first guide inclined surface 13 and a second guide inclined surface 14;

the spring 6 is positioned at one end of the rotary fluted disc 4, which is away from the driving main body;

the electromagnetic coil 8 is positioned at one end of the spring 6, which is away from the rotary fluted disc 4;

when the electromagnetic coil 8 receives a first pulse signal, the driving main body drives the rotary fluted disc 4 to move towards the electromagnetic coil 8 under the action of magnetic force, and when the rotary fluted disc 4 is separated from the guiding structure on the external gear shell 1, the first meshing teeth 21 and the second meshing teeth 41 are gradually meshed and the rotary fluted disc 4 rotates in the meshing process; after the magnetic force of the electromagnetic coil 8 disappears, the spring 6 pushes the rotary fluted disc 4 to move in the direction away from the electromagnetic coil 8, the rotary fluted disc 4 moves to the position where the rotary fluted disc 4 is matched with the first guide part of the guide structure under the guidance of the first guide inclined plane 13, and the driving main body is limited at the first limiting position;

when the electromagnetic coil 8 receives the second pulse signal, the driving main body drives the rotary fluted disc 4 to move towards the electromagnetic coil 8 under the action of magnetic force, and when the rotary fluted disc 4 is separated from the guiding structure, the first meshing teeth 21 and the second meshing teeth 41 are gradually meshed and the rotary fluted disc 4 rotates in the meshing process; after the magnetic force of the electromagnetic coil 8 disappears, the spring 6 pushes the rotary fluted disc 4 to move in the direction away from the electromagnetic coil 8, the rotary fluted disc 4 moves to be matched with a second guide part of the guide structure under the guidance of the second guide inclined plane 14, and the driving main body is limited at a second limiting position.

The application provides a actuating mechanism can be arranged in driving the locking mechanism in the electrical door lock, when making the drive main part be arranged in first spacing position, can make locking mechanism lock and prevent that the door hook from deviating from the fore shaft, and when making the drive main part be arranged in second spacing position, can make locking mechanism unblock, the electrical door can be opened. It will be appreciated, of course, that the drive mechanism may be used to drive other devices to drive and maintain the other devices to a first state when the drive body is in the first limit position and to a second state when the drive body is in the second limit position.

In one embodiment of the present application, the driving body comprises a rotary tooth driving rod 2 and a plunger 3, wherein one end of the rotary tooth driving rod 2 extends out of the through hole of the outer gear housing 1, a plurality of first meshing teeth 21 are arranged at one end of the rotary tooth driving rod 2 extending into the through hole, and a rotary tooth disc 4 is arranged at one end of the rotary tooth driving rod 2 extending into the through hole.

The plunger 3 is arranged to be absorbed by the magnetic force of the electromagnetic coil 8, and the plunger 3 can drive the rotary tooth driving rod 2 to move towards the electromagnetic coil 8 under the action of the magnetic force, so that the rotary tooth driving rod 2 pushes the rotary tooth disc 4 to move towards the electromagnetic coil 8.

Alternatively, as shown in fig. 3, the plunger 3 includes a stopper 32 and a rod 31, the stopper 32 being stopped on an end of the rotary tooth plate 4 of the rotary tooth driving lever 2, the rod 31 being provided so as to be able to pass through the rotary tooth driving lever 2 and the rotary tooth plate 4 from the end of the rotary tooth driving lever 2 remote from the rotary tooth plate 4 so as to be able to be attracted by the electromagnetic coil 8; wherein, be provided with the mounting structure that is used for installing transfer line 9 on changeing tooth actuating lever 2.

Or, one end of the plunger 3 passes through the tooth rotating driving rod 2 and the tooth rotating disc 4 so as to be adsorbed by the electromagnetic coil 8, the transmission rod 9 used for stopping on the tooth rotating driving rod 2 is arranged at the other end, and the end part, far away from the tooth rotating disc 4, of the tooth rotating driving rod 2 is stopped by the transmission rod 9, so that when the electromagnetic coil 8 has magnetic force, the plunger 3 can drive the tooth rotating driving rod 2 to move towards the electromagnetic coil 8, and when the magnetic force disappears, the tooth rotating driving rod 2 can drive the plunger 3 to move far away from the electromagnetic coil 8.

Alternatively, it is also possible to provide the plunger 3 fixed with the rotary-tooth driving rod 2, and to reduce the weight and cost, it is possible to provide the rotary-tooth driving rod 2 as a plastic member, and only the plunger 3 as a ferrous material capable of being magnetically attracted, and then fix the two together. Of course, the component of the rotary tooth drive lever 2 and the plunger 3 which can be attracted by the electromagnetic coil and which is integrally formed is not excluded.

In this embodiment, since the rotary fluted disc 4 rotates, in order to avoid the unstable operation caused by the direct contact between the rotary fluted disc 4 and the spring 6, it is preferable that the driving mechanism further includes a rotary tooth holder 5, the rotary tooth holder 5 is disposed between the spring 6 and the rotary fluted disc 4, the driving mechanism further includes a self-locking holder 7, the self-locking holder 7 is disposed at one end of the spring 6 facing away from the rotary tooth holder 5, and the self-locking holder 7 is disposed for being fixed on the external gear housing 1. That is, the two ends of the spring 6 respectively prop against the rotary tooth bottom bracket 5 and the self-locking bottom bracket 7.

Further, as shown in fig. 5, the tooth rotating driving rod 2 extends from the position where the first engaging tooth 21 is disposed toward the electromagnetic coil 8 to form an extension portion 23, and the tooth rotating disc 4 and the tooth rotating base 5 are respectively in an annular structure, and the tooth rotating disc 4 and the tooth rotating base 5 are sleeved on the extension portion 23.

Wherein, a plurality of first clamping grooves 232 are arranged on one of the outer wall of the extension part 23 and the inner wall of the rotary tooth bottom bracket 5, a plurality of first clamping buckles 52 are arranged on the other, the rotary tooth bottom bracket 5 and the extension part 23 are matched and clamped with the first clamping grooves 232 through the first clamping buckles 52, and the first clamping buckles 52 are arranged to axially move along the first clamping grooves 232, so that the rotary tooth bottom bracket 5 can axially move relative to the rotary tooth driving rod 2. As shown in fig. 5 and 7, the extension portion 23 is provided with a first clamping groove 232, and the rotary tooth holder 5 is provided with a first clamping buckle 52, it is understood that the rotary tooth holder 5 may be provided with a first clamping groove, and the extension portion 23 may be provided with a first clamping buckle.

As shown in fig. 4 and 8, one of the inner wall of the outer gear case 1 and the outer wall of the self-locking shoe 7 is provided with a plurality of second clamping grooves 17, and the other is provided with a plurality of second clamping buckles 72, and the self-locking shoe 7 and the outer gear case 1 are clamped together through the second clamping grooves 17 and the second clamping buckles 72 in a matching manner.

During assembly, the rotary tooth driving rod 2 and the plunger 3 can be inserted from the first end (the upper end in fig. 4) of the outer tooth shell 1, the rotary tooth disc 4 and the rotary tooth bottom support 5 sequentially enter the through hole from the second end of the outer tooth shell 1 and are sleeved on the extension part 23 of the rotary tooth driving rod 2, wherein the extension part 23 is also provided with a first sliding groove 231, the rotary tooth bottom support 5 is provided with a first sliding block 51, and the first sliding block 51 on the rotary tooth bottom support 5 slides to the first clamping buckle 52 along the first sliding groove 231 to be clamped with the first clamping groove 232; then install spring 6 and auto-lock collet 7 in the through-hole of external tooth shell 1 from the second end of external tooth shell 1, wherein still be provided with second spout 16 on the external tooth shell 1, still be provided with second slider 71 on the auto-lock collet 7, the auto-lock collet 7 slides to second buckle 72 and second draw-in groove 17 joint along second spout 16 through second slider 71.

In one embodiment, the first guiding part of the guiding structure on the external gear housing 1 comprises at least two parallel extending guiding grooves 11 arranged on the external gear housing 1, the driving main body (the rotary gear driving rod 2 of the driving main body is shown in fig. 5) is provided with guiding protrusions 22 matched with the guiding grooves 11, the outer circumferential surface of the rotary gear disc 4 is provided with guiding teeth 42 radially protruding and matched with the guiding grooves 11, and at one end of the rotary gear disc 4 with second meshing teeth 41, the guiding teeth 42 are provided with guiding tooth surfaces consistent with tooth surfaces of the corresponding second meshing teeth 41; the guide teeth 42 are arranged so as to be able to enter the guide groove 11 guided by the first guide bevel 13 when moving in a direction away from the electromagnetic coil 8.

The second guiding part is a guiding surface 12 arranged on the outer gear shell 1 and forming an included angle with the second guiding inclined surface 14, and the extending direction of the guiding surface 12 is consistent with the extending direction of the guiding groove 11; the guide teeth 42 are arranged so as to be able to move under the guidance of the second guide ramp 14 into engagement with the angle between the guide surface 12 and the second guide ramp 14 when moving in a direction away from the solenoid 8, limiting the counter-rotating toothed disc 4 so that the drive body cannot move further but is limited in the second limiting position. It will be appreciated that the second guide portion may also be a guide groove provided adjacent to the second guide inclined surface 14, that is, the guide tooth 42 moves to the guide groove under the guidance of the second guide inclined surface 14 and then is limited when moving to the preset position.

Wherein, referring to fig. 4 (in combination with fig. 9 and 12), radially inwardly protruding and longitudinally extending ridges 15 are provided at intervals on the inner wall of the through hole of the outer gear case 1 (only the ridges 15 are shown in fig. 9 and 12 for clarity of construction, the portions of the outer gear case located outside the ridges 15 are not shown), guide grooves 11 are formed between adjacent ridges 15, first guide inclined surfaces 13 and second guide inclined surfaces 14 are provided on the end surfaces of the ridges 15 facing one end of the electromagnetic coil 8, and the guide surfaces 12 are provided between the first guide inclined surfaces 13 and the second guide inclined surfaces 14.

In one embodiment, as shown in fig. 6, one end of the rotary fluted disc 4 is provided with a plurality of second engaging teeth 41 along the circumferential direction, each preset second engaging tooth 41 is provided with a guiding tooth 42, and the guiding tooth 42 extends radially outwards from the second engaging tooth 41 at the preset position, that is, the tooth surface of the end part of the guiding tooth 42 is integrally formed with the tooth surface of the corresponding second engaging tooth 41. The engagement of the rotary toothed disc 4 with the rotary toothed driving rod 4 in this embodiment is relatively stable. In a further embodiment, as shown in fig. 15, it is also possible to provide each second engagement tooth 41 on the toothed disc 4 with a respective radial extension forming a guide tooth 42.

To enable the drive body to be limited in the first limiting position, in one embodiment, the rotary tooth drive rod 2 is limited by the outer tooth shell 1 when moving in a direction away from the electromagnetic coil 8, i.e. a limiting part for limiting the rotary tooth drive rod 2 is provided at a preset position on the outer tooth shell 1, and the rotary tooth drive rod 2 is limited in the first limiting position by the limiting part during moving. In another embodiment, it is also possible to provide that the rotary tooth support 5 is limited by the outer tooth housing 1 in the movement away from the electromagnetic coil 8 such that the drive body is limited in the first limiting position, as shown in fig. 12, the radial collar of the rotary tooth support 5 catches on one end of the ridge 15 of the outer tooth housing 1 with the first and second guide ramps 13, 14, so that the rotary tooth support 5 cannot continue to push the rotary tooth disc 4 and the rotary tooth drive rod 3, so that the rotary tooth drive rod 2 and the plunger 3 remain in the first limiting position.

In order to enable the drive body to conveniently drive the locking mechanism in the electric door lock, a transmission rod 9 is provided on the drive body. The transmission rod 9 is arranged to enable the locking mechanism of the electric door lock to be kept in different states when in different positions, and in one embodiment, the transmission rod 9 arranged on the transmission rod can enable the locking mechanism to be in a locking state when the driving main body is arranged at a first limit position, and the transmission rod 9 arranged on the transmission rod can enable the locking mechanism to be in an unlocking state when the driving main body is arranged at a second limit position (the relation between the transmission rod 9 and the locking mechanism can be shown in the following example of the electric door lock).

It will be appreciated that in other embodiments, the drive body may be provided with other linkage members to drive the locking mechanism during operation, rather than a drive rod to drive the locking mechanism.

In one embodiment, as shown in fig. 3, a mounting hole 24 is provided in the rotary tooth driving lever 2 of the driving body, and the transmission lever 9 is mounted in the mounting hole 24 (refer to fig. 1 and 2).

In another embodiment, as shown in fig. 15, a mounting hole is provided in the plunger 3 of the driving body, through which the transmission rod 9 is mounted on the plunger 3, and in this embodiment, the transmission rod 9 may be used not only as a component for driving the locking mechanism, but also to abut against the rotary tooth driving rod 2 through the transmission rod 9 during the movement of the plunger 3 toward the electromagnetic coil 8 to thereby drive the rotary tooth driving rod 2 to move. The manner in which the drive rod 9 is mounted on the plunger 3 may facilitate a reduction in the size of the rotary-toothed drive rod 2.

The following describes in detail a specific process of locking and unlocking an electric door lock by using a driving mechanism provided in one embodiment.

Locking:

when the door lock of the electric appliance is in the unlocking state, the state of the driving mechanism is as shown in fig. 1 and 9, the driving main body is in the second limit position (the driving main body comprises the rotary tooth driving rod 2 and the plunger 3), and the transmission rod 9 keeps the locking mechanism in the unlocking state.

In this state, as shown in fig. 9, the guide teeth 42 of the rotary toothed disc 4 are caught by the second guide inclined surfaces 14 and the guide surfaces 12 of the external gear housing 1, and the rotary toothed disc 4 is restrained, so that the driving body is held at the second restrained position.

When the electromagnetic coil 8 receives a first pulse signal (the voltage pulse signal is given when the electric appliance is started), the plunger 3 drives the rotary tooth driving rod 2 to move towards the electromagnetic coil 8 under the action of magnetic force, and the first meshing teeth 21 of the rotary tooth driving rod 2 prop against the second meshing teeth 41 of the rotary tooth disc 4 to push the rotary tooth disc 4 to move. During the movement, the guide projection 22 of the rotary-tooth driving lever 2 moves along the guide groove 11 of the external gear housing 1, and the rotary-tooth plate 4 moves along the guide surface 12, as shown in fig. 10, at which time the first engagement tooth 21 and the second engagement tooth 41 are only partially engaged. After the rotary fluted disc 4 is separated from the guiding constraint of the guiding surface 12, the first meshing teeth 21 of the rotary fluted disc driving rod 2 continuously prop against the second meshing teeth 41 of the rotary fluted disc 4, so that the rotary fluted disc 4 rotates, and the first meshing teeth 21 and the second meshing teeth 41 are gradually and completely meshed.

After the pulse voltage applied to the electromagnetic coil 8 is finished, the magnetic force is eliminated, the spring 6 pushes the rotary tooth holder 5 and the rotary tooth disc 4 to move in the direction away from the electromagnetic coil 8, during the moving process, the guiding tooth surface of the guiding tooth 42 on the rotary tooth disc 4 moves along the first guiding inclined surface 13 of the outer tooth shell 1 (as shown in fig. 11), then the guiding tooth 42 enters the guiding groove 11 and continues to move along the guiding groove 11, meanwhile, the rotary tooth driving rod 2 is pushed to move, after the radial convex ring moving to the rotary tooth holder 5 is propped against the outer tooth shell 1 (as shown in fig. 12), the driving body is in the first limit position, and the driving rod 9 on the driving body drives the locking mechanism to be in the locking state and keeps in the locking state (as shown in fig. 2).

And (3) unlocking:

when the electromagnetic coil 8 receives a second pulse signal (the voltage pulse signal is given by the end of the work of the electric appliance), the plunger 3 drives the rotary tooth driving rod 2 to move towards the electromagnetic coil 8 under the action of magnetic force, and the first meshing teeth 21 of the rotary tooth driving rod 2 prop against the second meshing teeth 41 of the rotary tooth disc 4 to push the rotary tooth disc 4 to move. During the movement, both the guide projection 22 of the rotary tooth driving lever 2 and the guide tooth 42 of the rotary tooth plate 4 move along the guide groove 11 of the external tooth case 1, that is, move from the state shown in fig. 12 to the state shown in fig. 13, in which the first engagement tooth 21 and the second engagement tooth 41 are only partially engaged. After the rotary toothed disc 4 is separated from the guiding constraint of the guiding groove 11 (fig. 13 shows a state that the guiding tooth 42 of the rotary toothed disc 4 is just separated from the guiding groove 11), the first engaging tooth 21 of the rotary toothed driving rod 2 continuously pushes against the second engaging tooth 41 of the rotary toothed disc 4, so that the rotary toothed disc 4 rotates, and the first engaging tooth 21 and the second engaging tooth 41 are gradually and completely engaged.

After the pulse voltage applied to the electromagnetic coil 8 is ended, the magnetic force disappears, the spring 6 pushes the rotary tooth holder 5 and the rotary tooth disc 4 to move in the direction away from the electromagnetic coil 8, and in the moving process, the guiding tooth surface of the guiding tooth 42 on the rotary tooth disc 4 moves along the second guiding inclined surface 14 of the external tooth shell 1 (as shown in fig. 14) until the guiding tooth 42 is clamped in an included angle formed by the second guiding inclined surface 14 and the guiding surface 12 (as shown in fig. 9), the driving main body is in the second limiting position, and the transmission rod 9 on the driving main body can drive the locking mechanism to the unlocking state and keep the unlocking state (as shown in fig. 1).

In another aspect of the present application, as shown in fig. 16, there is further provided an electric door lock, where the electric door lock includes a door hook 70 and a door lock main body, and the door lock main body includes a lock case (for clarity of structure, the lock case is not shown), a coupling mechanism located in the lock case for coupling with the door hook 70, and a locking mechanism;

the door lock main body further comprises the driving mechanism, the driving mechanism is combined with the combining mechanism after the door hook 70 enters the locking opening, when the electric appliance is started, the electromagnetic coil 8 receives a first pulse signal, the driving main body of the driving mechanism moves to a first limiting position, the driving locking mechanism locks the combining mechanism, when the electromagnetic coil 8 receives a second pulse signal, the driving main body moves to a second limiting position, the driving locking mechanism unlocks the combining mechanism, and therefore the door hook can be separated from the combining mechanism.

In one embodiment, referring to fig. 16, the coupling mechanism includes a latch hook 50 and a torsion spring 60, one torsion arm of the torsion spring 60 is connected to the latch case, and the other torsion arm is connected to the latch hook 50 to apply an elastic force to the latch hook 50 through the torsion spring 60; when the door hook 70 enters the locking opening, the door hook 70 pushes the lock hook 50 to rotate, and when the door hook 70 enters the preset position, the lock hook 50 rotates to be combined with the door hook 70 under the elastic force of the torsion spring 60.

In the present embodiment, as shown in fig. 16, the lock mechanism includes a lock slider 30, a spring 40, and a lock member 20.

When the door hook 70 enters the lock opening of the door lock main body, the lock hook 50 of the combining mechanism is pushed to rotate, after the door hook 70 enters the rear lock opening, the lock hook 50 clamps the door hook 70 under the elastic force of the torsion spring 60, at this time, the lock hook 50 drives the locking slide block 30 to move from the first position to the second position, the locking slide block 30 presses against the locking surface of the lock hook 50, the lock hook 50 can be prevented from overturning, and thus the door hook 70 cannot be separated from the lock hook 50. After the electric appliance is started, the electromagnetic coil 8 in the driving mechanism receives a first pulse signal, the driving main body, the inner rotating teeth 4 and the spring 6 act (refer to the description above), and then the driving main body is limited at a first limiting position, wherein in the process that the transmission rod 9 on the driving main body moves along the sliding groove 202 of the locking piece 20 (refer to fig. 16 and the locking piece 20 shown in connection with fig. 15) in the moving process of the driving main body, the extending direction of the sliding groove 202 is inclined relative to the moving direction of the transmission rod 9, so that the transmission rod 9 drives the locking piece 20 to move, and when the driving main body is positioned at the first limiting position, the transmission piece 9 drives the locking piece 20 to move to the locking piece 201 to be inserted into the locking groove 301 of the locking slide 30, and the locking slide 30 is locked at a second position, thereby the locking slide 30 locks the locking hook 50 and preventing the door hook 70 from falling out.

After the electric appliance finishes working, the electromagnetic coil 8 receives a second pulse signal, the driving main body, the inner rotating teeth 4 and the spring 6 act, then the driving main body is limited at a second limiting position, the transmission rod 9 moves along the sliding groove 202 of the locking piece 20 in the movement process of the driving main body to drive the locking piece 20 to move, when the driving main body is located at the second limiting position, the transmission piece 9 drives the locking piece 20 to move until the locking piece 201 is separated from the locking groove 301 of the locking slide block 30, and the locking piece 20 unlocks the locking slide block 30, so that when the electric appliance door is opened, the door hook 70 is separated from the locking hook 50, the locking hook 50 can be overturned, and the locking slide block 30 is pushed to move from the second position to the first position.

It will be understood by those skilled in the art that the combination mechanism and the locking mechanism in the electric door lock are not limited to the above-described structural form, and can be variously modified, so long as the locking and unlocking of the door hook can be achieved by using the driving mechanism provided by the present application, and the present utility model is not limited thereto.

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

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 drive mechanism, the drive mechanism comprising:

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, wherein 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 drives the rotary fluted disc to move towards the electromagnetic coil under the action of magnetic force, and when the rotary fluted disc is separated from the guide structure, the first meshing teeth are gradually meshed with the second meshing teeth and the rotary 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;

when the electromagnetic coil receives a second pulse signal, the driving main body drives the rotary fluted disc to move towards the electromagnetic coil under the action of magnetic force, and when the rotary fluted disc is separated from the guide structure, the first meshing teeth are gradually meshed with the second meshing teeth and the rotary 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 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.

2. The drive mechanism according to claim 1, wherein the drive body includes a rotary tooth drive rod and a plunger, wherein one end of the rotary tooth drive rod protrudes from the through hole, a plurality of the first engaging teeth are provided at one end of the rotary tooth drive rod protruding into the through hole, and the rotary tooth disc is provided at one end of the rotary tooth drive rod protruding into the through hole;

the plunger is arranged to be adsorbed by the magnetic force of the electromagnetic coil, and the plunger can drive the rotating tooth driving rod to push the rotating tooth disc to move towards the electromagnetic coil under the action of the magnetic force.

3. The drive mechanism according to claim 2, wherein the plunger includes a stopper portion that is stopped on an end of the rotary tooth plate-away end of the rotary tooth drive rod, and a rod portion that is provided so as to be able to pass through the rotary tooth drive rod and the rotary tooth plate from the rotary tooth drive rod-away end thereof so as to be able to be attracted by the electromagnetic coil; wherein, the tooth rotating driving rod is provided with a mounting structure for mounting the transmission rod;

or, one end of the plunger passes through the gear rotating driving rod and the gear rotating disc so as to be adsorbed by the electromagnetic coil, and the other end of the plunger is provided with a mounting structure for mounting a transmission rod, and the transmission rod is stopped at the end part, far away from the gear rotating disc, of the gear rotating driving rod.

4. The drive mechanism of claim 2, further comprising a rotating shoe and a self-locking shoe, the rotating shoe being disposed between the spring and the rotating disc, the self-locking shoe being disposed at an end of the spring facing away from the rotating shoe, and the self-locking shoe being configured for securing to the outer gear housing.

5. The driving mechanism as recited in claim 4 wherein said rotary tooth driving lever is formed with an extension portion extending from a portion where said first engaging tooth is provided toward said electromagnetic coil, said rotary tooth plate and said rotary tooth holder are respectively of annular configuration, and said rotary tooth plate and said rotary tooth holder are axially movably sleeved on said extension portion.

6. The drive mechanism of claim 5, wherein one of the outer wall of the extension portion and the inner wall of the rotary tooth holder is provided with a plurality of first clamping grooves, the other one is provided with a plurality of first clamping buckles, the rotary tooth holder and the extension portion are in matched clamping connection with the first clamping grooves through the first clamping buckles, and the first clamping buckles can move in the axial direction relative to the first clamping grooves;

and/or, a plurality of second clamping grooves are formed in one of the inner wall of the outer gear shell and the outer wall of the self-locking bottom support, a plurality of second buckles are arranged on the other one of the inner wall of the outer gear shell and the outer gear shell, and the self-locking bottom support and the outer gear shell are clamped together through the second clamping grooves and the second buckles in a matching mode.

7. The drive mechanism according to claim 1, wherein the first guide portion includes at least two parallel extending guide grooves provided on the outer gear housing, guide projections fitted to the guide grooves are provided on the drive body, guide teeth fitted to the guide grooves are formed on an outer peripheral surface of the rotary tooth plate in radial projections, and at one end of the rotary tooth plate having the second engaging teeth, the guide teeth have guide tooth surfaces in conformity with tooth surfaces of the corresponding second engaging teeth;

the guide teeth are arranged to be guided by the first guide ramp into the guide groove when moving in a direction away from the solenoid.

8. The driving mechanism according to claim 7, wherein the second guide portion is a guide surface provided on the outer gear housing at an angle to the second guide slope, and an extending direction of the guide surface is identical to an extending direction of the guide groove;

the guide teeth are arranged to be capable of moving into an included angle clamped between the guide surface and the second guide inclined surface under the guidance of the second guide inclined surface when moving in a direction away from the electromagnetic coil, so that the driving main body is limited at the second limiting position.

9. The drive mechanism of claim 4, wherein the rotating-tooth drive rod is restrained by the outer gear housing to restrain the drive body in the first restraining position when moving in a direction away from the electromagnetic coil, or wherein the rotating-tooth shoe is restrained by the outer gear housing to restrain the drive body in the first restraining position when moving in a direction away from the electromagnetic coil.

10. 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, a combining mechanism and a locking mechanism, wherein the combining mechanism is positioned in the lock shell and is used for combining with the door hook;

the door lock main body further comprises a driving mechanism according to any one of claims 1-9, wherein after the door hook enters the locking opening and is combined with the combining mechanism, and the electromagnetic coil receives a first pulse signal, the driving main body of the driving mechanism moves to the first limiting position to drive the locking mechanism to lock the combining mechanism, and after the electromagnetic coil receives a second pulse signal, the driving main body moves to the second limiting position to drive the locking mechanism to unlock the combining mechanism.

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