CN214740571U - Locking mechanism - Google Patents

Abstract

The application provides a locking mechanism, and relates to the technical field of locking structures. The locking mechanism comprises a shell, a motor, a rotating shaft, a driving wheel and a cam. The motor is connected with the rotating shaft. The rotating shaft is provided with a first inclined plane, and one end of the first inclined plane is provided with a first boss. The driving wheel is provided with a second inclined plane, and one end of the second inclined plane is provided with a second boss. The first boss is attached to the second inclined plane, and the second boss is attached to the first inclined plane. The driving wheel is in transmission connection with the cam and can drive the cam to rotate so as to realize locking and unlocking. When the motor is started, the first boss slides on the second inclined plane, and the second boss slides on the first inclined plane; until the first boss abuts against the second boss, the driving wheel is driven to rotate between the first position and the second position. The locking mechanism realizes the locking and unlocking by means of the matching of the first boss and the second inclined plane, the matching of the second boss and the first inclined plane and the matching of the first boss and the second boss, and the structure is simple.

Description

Locking mechanism

Technical Field

The application relates to the technical field of locking structures, in particular to a locking mechanism.

Background

In the existing motor-driven locking mechanism, indirect locking is more and more emphasized in the lockset industry because the driving force is small, and the structure of the existing locking mechanism is more complex.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the present application is to provide a locking mechanism, which aims to solve the problem of complicated locking mechanism in the related art.

The embodiment of the application provides a locking mechanism, and this locking mechanism includes shell, motor, pivot, action wheel and cam. The action wheel sets up in the shell, and the motor is connected with the pivot. The rotating shaft is provided with a first inclined plane, and one end of the first inclined plane is provided with a first boss. The driving wheel is provided with a second inclined plane, and one end of the second inclined plane is provided with a second boss. The first boss is attached to the second inclined plane, and the second boss is attached to the first inclined plane. The driving wheel is in transmission connection with the cam and can drive the cam to rotate so as to realize locking and unlocking. The driving wheel is provided with a first position and a second position which respectively correspond to the unlocking position and the locking position of the cam. When the motor starts, the first boss slides on the second inclined plane, and the second boss slides on the first inclined plane. Until the first boss abuts against the second boss, the driving wheel is driven to rotate between the first position and the second position. This locking mechanism relies on the cooperation on first boss and second inclined plane, the cooperation on second boss and first inclined plane and the cooperation of first boss and second boss, has realized the switching lock, and the structure is comparatively simple.

As an optional technical scheme of the embodiment of the application, two sides of the first boss are respectively provided with a first inclined plane, and two sides of the second boss are respectively provided with a second inclined plane. The first inclined planes are arranged on the two sides of the first boss respectively, the second inclined planes are arranged on the two sides of the second boss respectively, so that when the motor rotates forwards and backwards, the first boss can be matched with the second inclined planes, and the second boss can be matched with the first inclined planes, so that unlocking and locking of the locking mechanism are realized.

As an optional technical scheme of the embodiment of the application, the first inclined surface and the first boss are a first clutch component. Be provided with a plurality of first clutch assembly in the pivot, a plurality of first clutch assembly distribute in the terminal surface that is close to the action wheel of pivot equally spaced. The second inclined plane and the second boss are a second clutch component. The driving wheel is provided with a plurality of second clutch assemblies, and the second clutch assemblies are distributed on the end face, close to the rotating shaft, of the driving wheel at equal intervals. The second clutch assemblies correspond to the first clutch assemblies one by one. Through setting up a plurality of first clutch packs and a plurality of second clutch packs, promote the stability when locking mechanism unblanks and locks, when the motor anti-lock changes, whenever the motor stops when, first clutch packs all has second clutch packs to cooperate, is convenient for unblank next time and locks.

As an optional technical solution of the embodiment of the present application, the locking mechanism includes a first limiting portion and a second limiting portion. When the driving wheel rotates to the first position, the driving wheel moves towards the first direction along the axial direction so as to be circumferentially locked by the first limiting part. When the driving wheel rotates to the second position, the driving wheel moves towards the first direction along the axial direction so as to be circumferentially locked by the second limiting part. When the driving wheel is circumferentially locked by the first limiting part or the second limiting part, the motor is started, the first boss slides on the second inclined surface, the second boss slides on the first inclined surface, and the driving wheel axially moves towards a second direction opposite to the first direction along the axial direction so as to release the circumferential locking of the driving wheel. After the circumferential locking of the driving wheel is released, the first boss abuts against the second boss to drive the driving wheel to rotate between the first position and the second position. This locking mechanism relies on first spacing portion and the spacing realization auto-lock of second, and the locking is effectual.

As an optional technical solution of the embodiment of the present application, the first limiting portion is a first groove disposed on an inner wall of the housing, and the second limiting portion is a second groove disposed on the inner wall of the housing. The peripheral surface of the driving wheel is provided with a lug. When the driving wheel rotates to the first position, the driving wheel moves towards the first direction along the axial direction, so that the convex block is inserted into the first groove. When the driving wheel rotates to the second position, the driving wheel moves towards the first direction along the axial direction, so that the lug is inserted into the second groove. When the driving wheel is circumferentially locked by the first groove or the second groove, the motor is started, and the driving wheel axially moves towards the second direction along the axial direction so that the bump exits from the first groove or the second groove. Through set up the lug on the action wheel, offer first recess and second recess at the inner wall of casing, the lug cooperates with first recess and second recess, is convenient for restrict the circumferential direction of action wheel.

As an optional technical scheme of this application embodiment, be provided with the spout on the inner wall of shell, the spout extends along the circumference of shell, and first recess and second recess are located the both ends of spout and communicate with the spout respectively. After the lug exits the first groove or the second groove, the lug enters the sliding groove, and the motor can drive the lug to move along the sliding groove. Through setting up the spout, communicate first recess and second recess, the action wheel of being convenient for switches between primary importance and second place.

As an optional technical scheme of the embodiment of the application, a third inclined plane is arranged on one side, away from the sliding groove, of the first groove. When the driving wheel rotates from the second position to the first position and the motor is still not stopped, the bump slides upwards along the third inclined surface, and the driving wheel axially moves towards the second direction; the first boss passes through the second boss, and the lug slides downwards along the third inclined plane; the driving wheel moves towards the first direction along the axial direction, and the convex block continuously slides up and down on the third inclined surface until the motor stops rotating; the driving wheel moves in the first direction along the axial direction to be inserted into the first groove. One side of the second groove far away from the sliding groove is provided with a fourth inclined plane. When the driving wheel rotates from the first position to the second position and the motor is still not stopped, the bump slides upwards along the fourth inclined plane, and the driving wheel axially moves towards the second direction; the first boss passes through the second boss, and the lug slides downwards along the fourth inclined plane; the driving wheel moves towards the first direction along the axial direction, and the convex block continuously slides up and down on the fourth inclined plane until the motor stops rotating; the driving wheel moves in the first direction along the axial direction to be inserted into the second groove.

Through setting up the third inclined plane, locking mechanism when unblanking operation, if the action wheel has rotated to the primary importance, and the motor still does not shut down, the lug can upwards move along the third inclined plane under the drive of motor, make action wheel and pivot break away from, the action wheel has lost the support and the drive of pivot, the lug begins to move down along the third inclined plane, until next first boss and the cooperation of second inclined plane, the pivot drives the action of action wheel once more, repeat this process, until the motor stall, final lug moves down along the third inclined plane, insert first recess, circumference locking action wheel. Similarly, through setting up the fourth inclined plane, when locking mechanism carried out the shutting operation, if the action wheel had rotated to the second position, and the motor still did not shut down, the lug can be along fourth inclined plane rebound under the drive of motor, make action wheel and pivot break away from, the action wheel has lost the support and the drive of pivot, the lug begins along fourth inclined plane downstream, until next first boss and second inclined plane cooperation, the pivot drives the action wheel action once more, repeat this process, until the motor stall, finally the lug moves along fourth inclined plane downstream, insert the second recess, circumference locking action wheel.

As an optional technical scheme of the embodiment of the application, the locking mechanism comprises an upper cover. The upper cover is connected with the shell, and the cam penetrates through the upper cover. The upper cover and the third inclined plane form a third groove, and the upper cover and the fourth inclined plane form a fourth groove. The tab is slidable within the third and fourth grooves. Through setting up the upper cover, the upper cover forms third recess and fourth recess with the shell, supplies the lug to slide from top to bottom at third recess and fourth recess, prevents the motor stall.

As an optional technical scheme of the embodiment of the application, the locking mechanism further comprises an elastic element, and the driving wheel is connected with the cam through the elastic element. When the cam is limited, the driving wheel rotates to enable the elastic element to accumulate elastic potential energy. When the cam is unlocked, the elastic element can release elastic potential energy to drive the cam to rotate. If when the lock is unlocked or locked, the rotation of the cam is limited, and at the moment, the motor can still normally rotate without damaging the motor. The motor normally rotates to accumulate elastic potential energy for the elastic element, and when the factor for blocking the rotation of the cam disappears, the cam rotates under the action of the elastic element to realize unlocking or locking.

As an optional technical scheme of the embodiment of the application, in the process that the circumferential locking of the driving wheel is released, the driving wheel axially moves to enable the elastic element to accumulate elastic potential energy. When the driving wheel rotates to the first position, the elastic element releases elastic potential energy to drive the driving wheel to axially move, so that the driving wheel is circumferentially locked by the first limiting part. When the driving wheel rotates to the second position, the elastic element releases elastic potential energy to drive the driving wheel to axially move, so that the driving wheel is circumferentially locked by the second limiting part. The elastic element can accumulate potential energy in the radial direction to realize the energy storage opening and closing of the cam, and can also accumulate the potential energy in the axial direction, so that the driving wheel can move in the axial direction, and the matching of the driving wheel and the first limiting part or the second limiting part is realized.

As an optional technical scheme of this application embodiment, the protruding two first archs that set up at the interval that are equipped with of one end terminal surface that the action wheel is close to the cam, the protruding two second archs that set up at the interval that are equipped with of one end terminal surface that the cam is close to the action wheel. The elastic element comprises a main body, a first supporting leg and a second supporting leg. The first support leg and the second support leg are respectively connected with the main body and respectively extend towards two sides of the main body. The first supporting leg is simultaneously abutted against one first bulge and one second bulge, and the second supporting leg is simultaneously abutted against the other first bulge and the other second bulge. Two ends of the main body are respectively propped against the driving wheel and the cam. Through the cooperation of first stabilizer blade, second stabilizer blade, first arch and second arch, when the cam was spacing, the action wheel rotated and to make one in first stabilizer blade and the second stabilizer blade rotate along with the action wheel, and the other remains static, accumulates elastic potential energy. When the cam is relieved from limiting, the support legs which are kept still start to rotate, and elastic potential energy is released to drive the cam to rotate. When the driving wheel releases the circumferential locking, namely disengages from the first limiting part to reach the first position, or disengages from the second limiting part to reach the second position, the main body accumulates elastic potential energy. When the driving wheel rotates from the first position to the second position or rotates from the second position to the first position, the elastic element releases elastic potential energy to drive the driving wheel to axially move, so that the driving wheel is circumferentially locked by the first limiting part or the second limiting part.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is an exploded view of a locking mechanism provided in an embodiment of the present application;

fig. 2 is a schematic overall structural diagram of a locking mechanism provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a rotating shaft according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a driving wheel according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a housing provided in an embodiment of the present application;

FIG. 6 is a schematic structural diagram of an elastic element according to an embodiment of the present disclosure;

fig. 7 is a schematic structural view of the driving wheel provided in the embodiment of the present application at a first viewing angle when the driving wheel is circumferentially locked by the second limiting portion;

fig. 8 is a cross-sectional view of the driving wheel provided by the embodiment of the present application when the driving wheel is circumferentially locked by the second limiting portion;

FIG. 9 is a cross-sectional view of a drive wheel provided in accordance with an embodiment of the present application in a second position;

FIG. 10 is a schematic structural diagram illustrating a locking mechanism according to an embodiment of the present application when the locking mechanism is normally open and locked;

FIG. 11 is a schematic structural diagram of a locking mechanism according to an embodiment of the present disclosure when the locking mechanism is locked and unlocked;

fig. 12 is a schematic structural diagram of a motor anti-blocking (display housing) according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a motor anti-blocking (not shown) according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of the housing and the upper cover provided in the embodiment of the present application when they are engaged.

Icon: 10-a locking mechanism; 100-a housing; 110-a first limiting part; 120-a second limiting part; 130-a chute; 140-a third bevel; 150-a fourth bevel; 160-a third groove; 170-a fourth groove; 200-a motor; 300-a rotating shaft; 310-a first bevel; 320-a first boss; 330-a mating projection; 400-driving wheel; 410-a body; 411-a second boss; 412-a second bevel; 420-a first sliding part; 430-a second sliding part; 431-a first projection; 440-a third projection; 450-a bump; 460-a mating hole; 500-cam; 510-a second protrusion; 520-a fourth bump; 600-a resilient element; 610-a body; 620-a first leg; 630-a second leg; 700-upper cover; 710-rotating the aperture.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.

Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Examples

Referring to fig. 1, with reference to fig. 2, fig. 3 and fig. 4, the present embodiment provides a locking mechanism 10, where the locking mechanism 10 includes a housing 100, a motor 200, a rotating shaft 300, a driving wheel 400, a cam 500, a first limiting portion 110 and a second limiting portion 120. Capstan 400 is disposed in housing 100, and motor 200 is connected to shaft 300. The shaft 300 has a first inclined surface 310, and one end of the first inclined surface 310 is provided with a first boss 320. The driving wheel 400 has a second inclined plane 412, and one end of the second inclined plane 412 is provided with a second boss 411. The first boss 320 is attached to the second inclined surface 412, and the second boss 411 is attached to the first inclined surface 310. The driving wheel 400 is in transmission connection with the cam 500, and the driving wheel 400 can drive the cam 500 to rotate so as to realize locking and unlocking. Capstan 400 has a first position and a second position. When the driving wheel 400 rotates to the first position, the driving wheel 400 moves in the first direction along the axial direction to be circumferentially locked by the first limiting portion 110. When the driving wheel 400 rotates to the second position, the driving wheel 400 moves in the first direction along the axial direction to be circumferentially locked by the second limiting portion 120. When driver 400 is circumferentially locked by first stopper 110 or second stopper 120, motor 200 is started, first boss 320 slides on second slope 412, second boss 411 slides on first slope 310, and driver 400 axially moves in a second direction opposite to the first direction in the axial direction, so that driver 400 is circumferentially unlocked. After the circumferential locking of the driving wheel 400 is released, the first boss 320 abuts against the second boss 411 to drive the driving wheel 400 to rotate between the first position and the second position. This locking mechanical system 10 relies on first spacing portion 110 and second spacing portion 120 to realize the auto-lock, and the locking is effectual.

Referring to fig. 3, in the present embodiment, a first inclined surface 310 is formed on an end surface of the rotating shaft 300, and a first boss 320 is disposed at a higher end of the first inclined surface 310. The first boss 320 and the highest point of the first inclined plane 310 have a height difference, and the surface of the first boss 320 close to the first inclined plane 310 forms a supporting surface. In this embodiment, two first inclined planes 310 are respectively disposed on two sides of the first boss 320. In another way, a large protrusion is formed on the end surface of the rotating shaft 300, the middle of the large protrusion is highest, inclined planes are respectively formed from the middle to both sides and extend to the end surface of the rotating shaft 300, and a height difference is formed between the middle and the highest point of the inclined planes, so that a supporting surface is formed on the surface of the middle close to the inclined planes.

Referring to fig. 3, in the present embodiment, the first inclined surface 310 and the first boss 320 are first clutch components. The rotating shaft 300 is provided with a plurality of first clutch assemblies, and the plurality of first clutch assemblies are distributed on the end surface of the rotating shaft 300 close to the driving wheel 400 at equal intervals. Referring to fig. 3, in the present embodiment, two sets of first clutch assemblies are disposed on the same end surface of the rotating shaft 300, and are symmetric with respect to the center of the circle of the end surface of the rotating shaft 300.

Referring to fig. 3, in the present embodiment, a center of an end surface of the rotating shaft 300, where the first protrusion 431 and the first inclined surface 310 are disposed, is protruded with a matching protrusion 330, and the matching protrusion 330 is used for matching with the driving wheel 400. Referring to fig. 1 and fig. 3, in the present embodiment, the fitting protrusion 330 is substantially cylindrical, and the difference is that a dome is formed at one end of the fitting protrusion 330 away from the rotating shaft 300.

Referring to fig. 4, in the present embodiment, the second inclined plane 412 is formed at a lower side of the body 410 of the driving wheel 400, that is, a side of the body 410 of the driving wheel 400 close to the rotating shaft 300, and the second protrusion 411 is disposed at a lower end of the second inclined plane 412, that is, the second protrusion 411 is formed at an end of the second inclined plane 412 close to the rotating shaft 300. The second protrusion 411 has a height difference with the highest point of the second inclined plane 412, and the surface of the second protrusion 411 close to the second inclined plane 412 forms a support surface. In this embodiment, two second inclined planes 412 are respectively disposed on two sides of the second boss 411.

Referring to fig. 3, in the present embodiment, the second inclined surface 412 and the second boss 411 are a second clutch component. A plurality of second clutch assemblies are arranged on the driving wheel 400, and are distributed on the end surface of the driving wheel 400 close to the rotating shaft 300 at equal intervals. The second clutch assemblies correspond to the first clutch assemblies one by one. Through setting up a plurality of first clutch packs and a plurality of second clutch packs, promote the stability when locking mechanism 10 unblanks and locks, when motor 200 prevents the stalling, whenever motor 200 stops, first clutch packs all has second clutch packs to cooperate, is convenient for unblank next time and locks. Referring to fig. 3, in the present embodiment, two sets of second clutch assemblies are disposed, and both the two sets of second clutch assemblies are disposed on one side of the main body 610 of the driving wheel 400 close to the rotating shaft 300, and are symmetric with respect to a center of a circle of the lower end surface of the main body 610. The underside of body 610 of capstan 400 may be shaped to cut out two portions of body 610 of capstan 400 that are used to receive first boss 320 and the remainder of the first ramp 310 after it is notched.

Referring to fig. 4, in the present embodiment, a fitting hole 460 is formed in a central position of a lower end surface of the main body 610. The fitting hole 460 is fitted with the fitting protrusion 330. Through the matching of the matching hole 460 and the matching protrusion 330, the driving wheel 400 is not easy to deviate, so that after the driving wheel 400 moves in the first direction or the second direction in the axial direction, the first boss 320 and the second inclined surface 412, and the second boss 411 and the first inclined surface 310 can be always matched.

Referring to fig. 4, in the present embodiment, a protrusion 450 is convexly disposed on the outer circumferential surface of the driving wheel 400 along the radial direction of the driving wheel 400, and the protrusion 450 is used for cooperating with the first limiting portion 110 and the second limiting portion 120 to achieve circumferential locking of the driving wheel 400. In this embodiment, the protrusion 450 includes a first sliding portion 420 and a second sliding portion 430, wherein the first sliding portion 420 is protruded from the outer peripheral surface of the main body 410 of the driving wheel 400, and the second sliding portion 430 is protruded from the side of the first sliding portion 420 away from the main body 410. In this embodiment, a side of the first sliding part 420 close to the rotating shaft 300 is formed into a circular arc surface or a rounded corner is adopted. The second sliding portion 430 has a cylindrical shape, and an end surface of the second sliding portion 430 is connected to the first sliding portion 420. In the axial direction, the lower surface of the first sliding portion 420 is closer to the rotating shaft 300 than the circumferential surface of the second sliding portion 430.

Referring to fig. 4, in the present embodiment, two first protrusions 431 are convexly disposed on a side of the first sliding portion 420 away from the rotating shaft 300. The center of the side of the body 410 away from the rotating shaft 300 is convexly provided with a third protrusion 440. The two first protrusions 431 are symmetrical with respect to the third protrusion 440.

Referring to fig. 5, in the present embodiment, the first position-limiting portion 110 is a first groove disposed on an inner wall of the housing 100, and the second position-limiting portion 120 is a second groove disposed on the inner wall of the housing 100. The outer circumferential surface of the driving wheel 400 is provided with a projection 450. When driver 400 rotates to the first position, driver 400 moves axially in a first direction to insert protrusions 450 into the first grooves. When driver 400 rotates to the second position, driver 400 moves axially in the first direction to insert protrusions 450 into the second grooves. When driver 400 is circumferentially locked by the first or second groove, motor 200 is activated and driver 400 moves axially in the second direction to withdraw projections 450 from the first or second groove. Through set up lug 450 on action wheel 400, set up first recess and second recess at the inner wall of casing, lug 450 cooperates with first recess and second recess, is convenient for restrict the circumferential direction of action wheel 400.

Referring to fig. 5, in the present embodiment, a sliding groove 130 is disposed on an inner wall of the housing 100, the sliding groove 130 extends along a circumferential direction of the housing 100, and the first groove and the second groove are located at two ends of the sliding groove 130 and are respectively communicated with the sliding groove 130. After the protrusion 450 exits the first groove or the second groove, the protrusion 450 enters the sliding slot 130, and the motor 200 can drive the protrusion 450 to move along the sliding slot 130. Through setting up spout 130, communicate first recess and second recess, be convenient for action wheel 400 to switch between first position and second position.

In order to improve the stability of the position limitation, in the embodiment, referring to fig. 5 and fig. 4, two protrusions 450 are disposed on the outer circumferential surface of the driving wheel 400, and the two protrusions 450 are symmetrical with respect to the center of the driving wheel 400. Two first grooves, two second grooves and two sliding grooves 130 are formed in the inner wall of the housing 100, and the two first grooves, the two second grooves and the two sliding grooves 130 are symmetrically distributed on the inner wall of the housing 100.

In an alternative embodiment, the first position-limiting portion 110 is a first protrusion disposed on the inner wall of the casing 100, the second position-limiting portion 120 is a second protrusion disposed on the inner wall of the casing 100, and a groove is disposed on the outer circumferential surface of the driving wheel 400. When the driving wheel 400 rotates to the first position, the driving wheel 400 moves axially to match the groove with the first protrusion. When the driving wheel 400 rotates to the second position, the driving wheel 400 moves axially to match the groove with the second protrusion. When driver 400 is circumferentially locked by the first protrusion or the second protrusion, motor 200 is activated to drive driver 400 to move axially, so that the groove is disengaged from the first protrusion or the second protrusion.

Referring to fig. 5, in the present embodiment, a third inclined surface 140 is disposed on a side of the first groove away from the sliding groove 130. When driving wheel 400 rotates from the second position to the first position and motor 200 is still not stopped, protrusion 450 slides upward along third inclined plane 140, and driving wheel 400 moves axially in the second direction; the first boss 320 passes over the second boss 411, and the projection 450 slides downward along the third inclined surface 140; the driving wheel 400 moves in the first direction along the axial direction, and the projection 450 continuously slides up and down on the third inclined surface 140 until the motor 200 stops rotating; driver 400 is moved axially in a first direction to insert into the first recess. A fourth inclined surface 150 is disposed on a side of the second groove away from the sliding groove 130. When driving wheel 400 rotates from the first position to the second position and motor 200 is still not stopped, protrusion 450 slides upward along fourth slope 150, and driving wheel 400 moves axially in the second direction; the first boss 320 passes over the second boss 411, and the projection 450 slides downward along the fourth inclined surface 150; the driving wheel 400 moves in the first direction along the axial direction, and the projection 450 continuously slides up and down on the fourth inclined surface 150 until the motor 200 stops rotating; driver 400 is moved axially in a first direction to insert into the second recess.

By providing the third inclined plane 140, when the locking mechanism 10 performs a locking operation, if the driving wheel 400 has rotated to the first position and the motor 200 is still not stopped, the protrusion 450 is driven by the motor 200 to move upward along the third inclined plane 140, so that the driving wheel 400 is separated from the rotating shaft 300, the driving wheel 400 loses the support and drive of the rotating shaft 300, the protrusion 450 starts to move downward along the third inclined plane 140 until the next time the first boss 320 is engaged with the second inclined plane 412, the rotating shaft 300 drives the driving wheel 400 again, and this process is repeated until the motor 200 stops rotating, and finally the protrusion 450 moves downward along the third inclined plane 140, is inserted into the first groove, and circumferentially locks the driving wheel 400. Similarly, by providing the fourth inclined surface 150, when the locking mechanism 10 performs an unlocking operation, if the driving wheel 400 has rotated to the second position and the motor 200 is still not stopped, the protrusion 450 is driven by the motor 200 to move upward along the fourth inclined surface 150, so that the driving wheel 400 is disengaged from the rotating shaft 300, the driving wheel 400 loses the support and drive of the rotating shaft 300, the protrusion 450 starts to move downward along the fourth inclined surface 150 until the next time the first boss 320 is engaged with the second inclined surface 412, the rotating shaft 300 drives the driving wheel 400 again, and this process is repeated until the motor 200 stops, and finally the protrusion 450 moves downward along the fourth inclined surface 150, is inserted into the second groove, and circumferentially locks the driving wheel 400.

Referring to fig. 1 and fig. 14, in the present embodiment, the locking mechanism 10 includes an upper cover 700, the upper cover 700 is connected to the housing, and the upper cover 700 is provided with a rotation hole 710 for extending and rotating the cam 500. The upper cover 700 and the third inclined surface 140 form a third groove 160, and the upper cover 700 and the fourth inclined surface 150 form a fourth groove 170. The tab 450 is able to slide within the third and fourth grooves 160, 170. By arranging the upper cover 700, the upper cover 700 and the housing 100 form a third groove 160 and a fourth groove 170 for the protrusion 450 to slide up and down on the third groove 160 and the fourth groove 170, thereby preventing the motor 200 from stalling.

Referring to fig. 1 again, in the present embodiment, a disc is connected to an end of the cam 500 close to the driving wheel 400, and the disc abuts against the upper cover 700 to prevent the cam 500 from being separated from the housing 100. Two second protrusions 510 and a fourth protrusion 520 are protruded from one side of the disk close to the driving wheel 400. The fourth protrusion 520 is located at the center of one side of the disk close to the driving wheel 400, and the two second protrusions 510 are located at both sides of the fourth protrusion 520, respectively, and are symmetrical with respect to the center of the fourth protrusion 520. In this embodiment, the second protrusion 510 has a cylindrical shape, and the fourth protrusion 520 has a cylindrical shape.

Referring to fig. 1 and fig. 6, in the present embodiment, the locking mechanism 10 further includes an elastic element 600, and the driving wheel 400 is connected to the cam 500 through the elastic element 600. When the cam 500 is stopped, the driving wheel 400 rotates to enable the elastic element 600 to accumulate elastic potential energy. When the cam 500 is released from the limit, the elastic element 600 can release the elastic potential energy to drive the cam 500 to rotate. If the rotation of the cam 500 is restricted during unlocking or locking, the motor 200 can still rotate normally without damaging the motor 200. The motor 200 normally rotates to accumulate elastic potential energy for the elastic element 600, and when the factor blocking the rotation of the cam 500 disappears, the cam 500 rotates under the action of the elastic element 600 to realize unlocking or locking.

In the process of disengaging circumferential lock of driver 400, axial movement of driver 400 enables elastic element 600 to accumulate elastic potential energy. When the driving wheel 400 rotates to the first position, the elastic element 600 releases the elastic potential energy to drive the driving wheel 400 to move axially, so that the driving wheel 400 is circumferentially locked by the first limiting portion 110. When the driving wheel 400 rotates to the second position, the elastic element 600 releases the elastic potential energy to drive the driving wheel 400 to move axially, so that the driving wheel 400 is circumferentially locked by the second limiting portion 120. The elastic element 600 can not only accumulate potential energy in the radial direction to realize the energy storage opening and closing of the cam 500, but also accumulate potential energy in the axial direction, so that the driving wheel 400 can move axially, and the driving wheel 400 can be matched with the first limiting part 110 or the second limiting part 120.

Referring to fig. 1, with reference to fig. 6 to 11, in the present embodiment, the elastic element 600 is a spring. The elastic element 600 has a first leg 620 and a second leg 630 extending from opposite ends thereof. The first leg 620 abuts against one of the first protrusions 431 and one of the second protrusions 510, the second leg 630 abuts against the other of the first protrusions 431 and the other of the second protrusions 510, the body 610 of the elastic element 600 is sleeved on the third protrusion 440, the fourth protrusion 520 is sleeved on the third protrusion 440, and the end surface of the fourth protrusion 520 abuts against the elastic element 600. Referring to fig. 4 and fig. 5, in the present embodiment, the first leg 620 and the second leg 630 are both formed with hooks, and the hooks of the first leg 620 and the hooks of the second leg 630 respectively hook the two first protrusions 431. The middle portions of the first leg 620 and the second leg 630 respectively abut against the two second protrusions 510. Thus, when cam 500 is stopped, driving wheel 400 rotates to enable elastic element 600 to accumulate elastic potential energy. When the cam 500 is released from the limit, the elastic element 600 can release the elastic potential energy to drive the cam 500 to rotate. In the process of disengaging circumferential lock of driver 400, axial movement of driver 400 enables elastic element 600 to accumulate elastic potential energy. When the driving wheel 400 rotates to the first position or the second position, the elastic element 600 releases the elastic potential energy to drive the driving wheel 400 to move axially, so that the driving wheel 400 is circumferentially locked by the first limiting portion 110 or the second limiting portion 120. In other words, the elastic element 600 is capable of both axial and radial energy storage.

In this embodiment, the elastic member 600 is a spring. In an alternative embodiment, the elastic element 600 is rubber, and the elastic element 600 has a cylindrical shape. The elastic element 600 is sleeved on a first protrusion 431 and simultaneously sleeved on a second protrusion 510, and the first protrusion 431 and the second protrusion 510 are located at two sides of the axis of the elastic element 600. The elastic element 600 is sleeved on the third protrusion 440 or the fourth protrusion 520, the length of the elastic element 600 is longer than the corresponding third protrusion 440 or fourth protrusion 520, and two ends of the elastic element 600 respectively support against the driving wheel 400 and the cam 500. When the cam 500 is limited, the rotation of the driving wheel 400 can make the elastic element 600 pull and twist on the side close to the first protrusion 431, and elastic potential energy is accumulated. When the cam 500 is released from the limit, the elastic element 600 can release the elastic potential energy to drive the cam 500 to rotate. In the process of releasing circumferential lock of driver 400, axial movement of driver 400 causes elastic element 600 to compress axially, accumulating elastic potential energy. When the driving wheel 400 rotates to the first position or the second position, the elastic element 600 releases the elastic potential energy to drive the driving wheel 400 to move axially, so that the driving wheel 400 is circumferentially locked by the first limiting portion 110 or the second limiting portion 120.

Referring to fig. 7 and 8, fig. 7 and 8 are schematic structural views illustrating the locking mechanism 10 in a locked state. When the locking mechanism 10 is in the locked state, the protrusion 450 is accommodated in the second groove, and the groove wall of the second groove stops the protrusion 450, so that the driving wheel 400 cannot rotate in the circumferential direction. At this time, referring to fig. 8, the first boss 320 contacts with the upper end of the second inclined plane 412, and the second boss 411 contacts with the lower end of the first inclined plane 310.

When the lock needs to be unlocked, the motor 200 rotates, so that the first boss 320 slides along the second inclined surface 412, the second boss 411 slides along the first inclined surface 310, the driver 400 axially moves towards the second direction under the action of the first boss 320, the second inclined surface 412, the second boss 411 and the first inclined surface 310, the second position is reached, the lug 450 is separated from the second groove, and the circumferential locking of the driver 400 is released.

Referring to fig. 9, fig. 9 is a schematic structural diagram of locking mechanism 10 when driver 400 is located at the second position. At this time, the first boss 320 contacts with the lower end of the second inclined surface 412, the second boss 411 contacts with the upper end of the first inclined surface 310, and the first boss 320 abuts against the second boss 411. The height of the lower surface of the projection 450 is higher than the height of the slide groove 130 so that the projection can slide from the second position to the first position through the slide groove 130. Referring to fig. 9, as the motor 200 continues to rotate, the first boss 320 abuts against the second boss 411 to drive the driving wheel 400 to rotate, so that the driving wheel 400 rotates from the second position to the first position.

In this process, there are two situations, one is the normal unlocking situation, and the other is the energy storage unlocking situation. Referring to fig. 10, fig. 10 is a schematic structural diagram of the locking mechanism 10 in the normal open and close locking mode. The driving wheel 400 transmits force through the elastic element 600, and the cam 500 is driven to rotate while the driving wheel 400 rotates, so that the locking and unlocking are realized. Referring to fig. 11, fig. 11 is a schematic structural diagram of the energy storage device during unlocking and locking. If the cam 500 is limited, the motor 200 rotates normally, the first boss 320 abuts against the second boss 411 to drive the driving wheel 400 to rotate along the sliding slot 130, and the driving wheel rotates from the second position to the first position, so that the elastic element 600 is compressed in the radial direction to store elastic potential energy. After the restriction of the cam 500 is removed, the elastic element 600 is deformed radially and restored, releasing the elastic potential energy, and rotating the cam 500 from the locking position to the unlocking position.

No matter normal unlocking or energy storage unlocking is performed, if driving wheel 400 reaches the first position and motor 200 stops rotating, driving wheel 400 moves towards the first direction under the action of elastic element 600, and bumps 450 are clamped into the first grooves, so that unlocking is completed.

Referring to fig. 12 and fig. 13, if driving wheel 400 reaches the first position and motor 200 does not stop rotating, then protrusion 450 slides upward along third inclined surface 140, and driving wheel 400 moves axially in the second direction; the first boss 320 passes over the second boss 411, and the projection 450 slides downward along the third inclined surface 140; the driving wheel 400 moves in the first direction in the axial direction under the action of the elastic element 600, then the first boss 320 acts with the second inclined plane 412, and the second boss 411 acts with the first inclined plane 310, so that the driving wheel 400 moves in the second direction, the protrusion 450 slides up and down along the third inclined plane 140, and the protrusion 450 continuously slides up and down on the third inclined plane 140 until the motor 200 stops rotating; capstan 400 is moved in the axial direction toward the first direction by elastic member 600 to be inserted into the first groove.

Briefly, the normal unlocking process of the locking mechanism 10 provided in the present embodiment is as follows:

first, the motor 200 is started to drive the first boss 320 to slide on the second inclined plane 412, and the second boss 411 to slide on the first inclined plane 310, so that the driving wheel 400 axially moves along the second direction, the protrusion 450 disengages from the second groove, and reaches the first position, at this time, the first protrusion 450 abuts against the second protrusion 450. The motor 200 continues to rotate, so that the protrusion 450 reaches the first position from the second position through the sliding slot 130, that is, the driving wheel 400 rotates from the second position to the first position, and the cam 500 is driven to rotate through the transmission of the elastic element 600, thereby realizing unlocking. If driving wheel 400 stops rotating when reaching the first position, driving wheel 400 moves in the first direction under the action of elastic element 600, and bumps 450 are snapped into the first grooves. If the motor 200 does not stop rotating, the projection 450 slides upwards along the third inclined plane 140, and the driving wheel 400 moves axially in the second direction; the first boss 320 passes over the second boss 411, and the projection 450 slides downward along the third inclined surface 140; the driving wheel 400 moves in the first direction in the axial direction under the action of the elastic element 600, then the first boss 320 acts with the second inclined plane 412, and the second boss 411 acts with the first inclined plane 310, so that the driving wheel 400 moves in the second direction, the protrusion 450 slides upwards along the third inclined plane 140, and the protrusion 450 continuously slides upwards and downwards on the third inclined plane 140 until the motor 200 stops rotating; capstan 400 is moved in the axial direction toward the first direction by elastic member 600 to be inserted into the first groove.

The energy storage unlocking (the rotation of the cam 500 is limited) process of the locking mechanism 10 provided in the present embodiment is as follows:

first, the motor 200 is started to drive the first boss 320 to slide on the second inclined plane 412, and the second boss 411 to slide on the first inclined plane 310, so that the driving wheel 400 axially moves along the second direction, the protrusion 450 disengages from the second groove, and reaches the first position, at this time, the first protrusion 450 abuts against the second protrusion 450. The motor 200 continues to rotate, so that the projection 450 passes through the sliding slot 130 to reach the first position from the second position, that is, the driving wheel 400 rotates from the second position to the first position, the rotation of the cam 500 is limited, so that the elastic element 600 is radially compressed, elastic potential energy is accumulated, and when the rotation limitation of the cam 500 is released, the deformation of the elastic element 600 is restored, and the cam 500 is driven to rotate, so that the unlocking is realized. If driving wheel 400 stops rotating when reaching the first position, driving wheel 400 moves in the first direction under the action of elastic element 600, and bumps 450 are snapped into the first grooves. If the motor 200 does not stop rotating, the projection 450 slides upwards along the third inclined plane 140, and the driving wheel 400 moves axially in the second direction; the first boss 320 passes over the second boss 411, and the projection 450 slides downward along the third inclined surface 140; the driving wheel 400 moves in the first direction in the axial direction under the action of the elastic element 600, then the first boss 320 acts with the second inclined plane 412, and the second boss 411 acts with the first inclined plane 310, so that the driving wheel 400 moves in the second direction, the protrusion 450 slides upwards along the third inclined plane 140, and the protrusion 450 continuously slides upwards and downwards on the third inclined plane 140 until the motor 200 stops rotating; capstan 400 is moved in the axial direction toward the first direction by elastic member 600 to be inserted into the first groove.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A locking mechanism is characterized by comprising a shell, a motor, a rotating shaft, a driving wheel and a cam, wherein the driving wheel is arranged in the shell, the motor is connected with the rotating shaft, the rotating shaft is provided with a first inclined surface, one end of the first inclined surface is provided with a first boss, the driving wheel is provided with a second inclined surface, one end of the second inclined surface is provided with a second boss, the first boss is attached to the second inclined surface, the second boss is attached to the first inclined surface, the driving wheel is in transmission connection with the cam, and the driving wheel can drive the cam to rotate so as to realize locking and unlocking;

the driving wheel is provided with a first position and a second position which respectively correspond to the unlocking position and the locking position of the cam.

2. The lock mechanism of claim 1, wherein the first boss is provided with a first inclined surface on each side thereof, and the second boss is provided with a second inclined surface on each side thereof.

3. The locking mechanism of claim 2, wherein the first inclined surface and the first boss are first clutch components, the rotating shaft is provided with a plurality of first clutch components, and the plurality of first clutch components are distributed on the end surface of the rotating shaft close to the driving wheel at equal intervals; the second inclined plane with the second boss is second clutch assembly, be provided with a plurality ofly on the action wheel second clutch assembly, it is a plurality of second clutch assembly distributes in the action wheel is close to equally spaced the terminal surface of pivot, second clutch assembly with first clutch assembly one-to-one.

4. The locking mechanism of claim 1, wherein the locking mechanism includes a first limit stop portion and a second limit stop portion.

5. The lock-out mechanism of claim 4, wherein the first position-limiting portion is a first groove formed in an inner wall of the housing, the second position-limiting portion is a second groove formed in the inner wall of the housing, and a protrusion is formed on an outer circumferential surface of the driver.

6. The locking mechanism according to claim 5, wherein a sliding groove is formed on an inner wall of the housing, the sliding groove extends along a circumferential direction of the housing, and the first groove and the second groove are located at two ends of the sliding groove and are respectively communicated with the sliding groove;

after the lug exits from the first groove or the second groove, the lug enters the sliding groove, and the motor can drive the lug to move along the sliding groove.

7. The locking mechanism of claim 6, wherein a side of the first groove away from the sliding groove is provided with a third inclined surface;

and a fourth inclined plane is arranged on one side, away from the sliding groove, of the second groove.

8. The locking mechanism of claim 7, comprising an upper cover, wherein the upper cover is connected to the housing, the cam is disposed through the upper cover, the upper cover and the third ramp form a third groove, the upper cover and the fourth ramp form a fourth groove, and the protrusion is capable of sliding in the third groove and the fourth groove.

9. The locking mechanism of claim 4, further comprising a resilient member, wherein the driver and the cam are connected via the resilient member;

when the cam is limited, the driving wheel rotates to enable the elastic element to accumulate elastic potential energy;

when the cam is unlocked, the elastic element can release elastic potential energy to drive the cam to rotate.

10. The locking mechanism of claim 9, wherein axial movement of the driver causes the elastic element to accumulate elastic potential energy during release of the circumferential lock of the driver.

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