CN113338716B - Clutch and lock body - Google Patents

Abstract

The invention provides a clutch and a lock body. Wherein, the clutch includes: a first connecting member; a second connecting member; the first connecting piece or the third connecting piece can drive the second connecting piece to rotate to the unlocking position; the first clutch piece penetrates through the second connecting piece and rotates synchronously with the second connecting piece, the first clutch piece can move along the radial direction of the second connecting piece, and the first clutch piece has a butt joint position and a separation position; the second connecting piece is provided with an unlocking protrusion extending into the clutch core, when the second connecting piece rotates to the unlocking position, the unlocking protrusion drives the clutch core to rotate, the rotation of the clutch core drives the first clutch piece to move and keep at the butt joint position, and when the first connecting piece and the third connecting piece rotate from the unlocking position to the initial position, the clutch core keeps still to keep the first clutch piece at the butt joint position. The invention solves the problem that the clutch in the prior art does not have the function of keeping the gear.

Description

Clutch and lock body

Technical Field

The invention relates to the technical field of locks, in particular to a clutch and a lock body.

Background

Most lock bodies on the market adopt a clutch as a clutch component to realize the electronic gear engaging function, but the gear engaging and disengaging processes of the existing clutch are realized only by electrons, and when the lock bodies are reset, the gear engaging is cancelled immediately, so that the use requirement of keeping the gear engaging cannot be realized.

Disclosure of Invention

The invention mainly aims to provide a clutch and a lock body, and aims to solve the problem that the clutch in the prior art does not have the function of keeping in gear.

In order to achieve the above object, according to one aspect of the present invention, there is provided a clutch including: a first connecting member; a second connecting member; the first connecting piece, the second connecting piece and the third connecting piece are sequentially axially overlapped, the first connecting piece, the second connecting piece and the third connecting piece are provided with initial positions and unlocking positions, and the first connecting piece or the third connecting piece can drive the second connecting piece to rotate to the unlocking positions; the first clutch piece penetrates through the second connecting piece and synchronously rotates with the second connecting piece, the first clutch piece can move along the radial direction of the second connecting piece, the first clutch piece has a butt joint position and a separation position, when the first clutch piece is positioned at the separation position, the first clutch piece exits from the third connecting piece and/or the first connecting piece so as to enable the third connecting piece or the first connecting piece to idle relative to the second connecting piece, and when the first clutch piece is positioned at the butt joint position, the first clutch piece extends into the third connecting piece and/or the first connecting piece so as to enable the third connecting piece or the first connecting piece to drive the second connecting piece to rotate to an unlocking position; the clutch core is axially arranged on the first connecting piece, the second connecting piece and the third connecting piece in a penetrating mode and can rotate in the circumferential direction, the second connecting piece is provided with an unlocking protrusion extending into the clutch core, when the second connecting piece rotates to the unlocking position, the unlocking protrusion drives the clutch core to rotate, the first clutch piece is driven to move and is kept at the butt joint position by rotation of the clutch core, and when the first connecting piece and the third connecting piece rotate to the initial position from the unlocking position, the clutch core is kept still to keep the first clutch piece at the butt joint position.

Furthermore, the clutch core is provided with a core concave part, when the clutch core rotates to the position that the core concave part is aligned with the first clutch part, the first clutch part extends into the core concave part, the first clutch part is located at a separation position, when the clutch core rotates to the position that the core concave part is staggered with the first clutch part, the first clutch part is abutted against the outer side surface of the clutch core, and the first clutch part is kept at a butt joint position.

Furthermore, the clutch core is provided with an unlocking hole for inserting an unlocking key, the unlocking key is inserted into the unlocking hole and can drive the clutch core to rotate reversely, so that the clutch core is aligned with the first clutch piece, and the first clutch piece can move to a separation position.

Furthermore, the clutch core is provided with a core unlocking groove, the unlocking protrusion extends into the core unlocking groove, and when the second connecting piece rotates from the initial position to the unlocking position, the unlocking protrusion extrudes the inner side of the core unlocking groove to drive the clutch core to rotate so as to drive the first clutch piece to move to the butt joint position.

Furthermore, the core unlocking groove extends for a preset length along the circumferential direction of the clutch core, when the second connecting piece rotates from the unlocking position to the initial position, the unlocking protrusion moves in the core unlocking groove, the unlocking protrusion does not extrude the core unlocking groove, and the clutch core is not driven to rotate.

Furthermore, the first connecting piece and the third connecting piece are provided with reset positions, the rotating directions of the first connecting piece and the third connecting piece from the initial position to the unlocking position are opposite to the rotating directions to the reset positions, the first connecting piece and/or the third connecting piece are/is provided with reset bulges extending into the clutch core, and when the first connecting piece or the third connecting piece rotates from the initial position to the reset position, the reset bulges drive the clutch core to rotate reversely so that the first clutch piece can move to the separation position.

Furthermore, the clutch core is provided with a core reset groove, the reset protrusion extends into the core reset groove, the core reset groove extends along the circumferential direction of the clutch core by a preset length, when the first connecting piece or the third connecting piece rotates from the initial position to the unlocking position, the reset protrusion moves in the core reset groove, and the reset protrusion does not press the core reset groove and does not drive the clutch core to rotate; when the first connecting piece or the third connecting piece rotates from the initial position to the reset position, the reset protrusion extrudes the core reset groove and drives the clutch core to rotate reversely, so that the first clutch piece can move to the separation position.

Further, the clutch further includes: the first positioning pin axially penetrates through the clutch core in a sliding manner, the first connecting piece is provided with a plurality of first grooves, and the first positioning pin can extend out of the clutch core and extend into the first grooves or retract into the clutch core so as to switch among the first grooves; the second positioning pin axially and slidably penetrates through the clutch core, the third connecting piece is provided with a plurality of second grooves, and the second positioning pin can extend out of the clutch core and extend into the second grooves or retract into the clutch core so as to switch among the second grooves; the elastic piece is arranged between the first positioning pin and the second positioning pin and respectively provides elasticity for the first positioning pin and the second positioning pin to extend into the first groove and the second groove; when the first connecting piece or the third connecting piece rotates from the initial position to the unlocking position or when the first connecting piece or the third connecting piece rotates from the initial position to the resetting position, the first connecting piece or the third connecting piece drives the clutch core to rotate, the first positioning pin or the second positioning pin synchronously rotates and does not axially move, and the second positioning pin or the first positioning pin axially moves and retracts into the clutch core; when the first connecting piece or the third connecting piece moves to the unlocking position or the resetting position, the second positioning pin or the first positioning pin is aligned with the second groove or the first groove and extends into the second groove or the first groove; when the first connecting piece or the third connecting piece rotates from the unlocking position to the initial position or when the first connecting piece or the third connecting piece rotates from the resetting position to the initial position, the third connecting piece or the first connecting piece is kept still, the second positioning pin or the first positioning pin is kept still, the clutch core is kept still, and the first positioning pin or the second positioning pin exits from the first groove or the second groove; when the first connecting piece or the third connecting piece rotates to the initial position, the first positioning pin or the second positioning pin is aligned with the first groove or the second groove and extends into the first groove or the second groove.

Furthermore, the clutch still includes second separation and reunion piece, and the second separation and reunion piece is worn to establish on the second connecting piece to rotate with the second connecting piece is synchronous, the axial displacement of second connecting piece can be followed to the second separation and reunion piece, in order to stretch into first connecting piece when the installation, makes first connecting piece can drive the second connecting piece and rotate, or stretches into the third connecting piece, makes the third connecting piece can drive the second connecting piece and rotate.

Furthermore, the first connecting piece and/or the third connecting piece are/is provided with a second clutch groove, the second clutch piece can extend into the second clutch groove, and when the first connecting piece or the third connecting piece rotates to the unlocking position, the second clutch piece is extruded by the second clutch groove and is driven to rotate by the second connecting piece; when the first clutch piece is located at the butt joint position and the third connecting piece or the first connecting piece rotates to the unlocking position, the second clutch piece moves in the second clutch groove, the inner wall of the second clutch groove does not extrude the second clutch piece, and the first connecting piece or the third connecting piece is kept still.

Furthermore, the first connecting piece and/or the third connecting piece are/is provided with a first clutch groove, the first clutch groove extends along the circumferential direction of the clutch for a preset length, when the first clutch piece moves to the butt joint position, the first clutch piece extends into the first clutch groove, and when the third connecting piece or the first connecting piece rotates from the initial position to the unlocking position, the inner wall of the first clutch groove extrudes the first clutch piece to drive the second connecting piece to rotate; when the first connecting piece or the third connecting piece rotates to the unlocking position, the first clutch piece moves in the first clutch groove, the inner wall of the first clutch groove does not extrude the first clutch piece, and the third connecting piece or the first connecting piece is kept still.

Furthermore, the clutch also comprises a first resetting piece, and two ends of the first resetting piece are respectively abutted to the first clutch piece and the second connecting piece and provide resetting force for the first resetting piece to move to a separation position.

According to another aspect of the invention, a lock body is provided, comprising the clutch described above.

By applying the technical scheme of the invention, the clutch device is provided with the first clutch piece and the clutch core, wherein the first clutch piece plays a role in controlling the butt joint and separation relationship between the first connecting piece or the third connecting piece and the second connecting piece, namely playing a role in engaging a gear, and the clutch core plays a role in controlling the first clutch piece; when the clutch needs to be engaged, the clutch core is rotated through the unlocking key, the rotation of the clutch core drives the first clutch part to move to the butt joint position, or the first clutch part is driven by external parts such as a motor to move to the butt joint position, at the moment, the first clutch part enables the third connecting part or the first connecting part to be in butt joint with the second connecting part, the third connecting part or the first connecting part can also drive the second connecting part to rotate, the first connecting part or the third connecting part is rotated, the second connecting part rotates to the unlocking position, the rotation of the second connecting part drives the clutch core, the rotation of the clutch core enables the first clutch part to be kept at the butt joint position and cannot be switched back to the separation position, even if the first connecting part and the third connecting part are subsequently rotated back to the initial position, the clutch core is kept still at the moment, so the first clutch part is always kept at the butt joint position, namely, the clutch is always engaged; if the gear is required to be disengaged, the clutch core is rotated reversely. Through the arrangement mode, the clutch has the function of keeping in gear, and even if the first connecting piece and the third connecting piece rotate back to the initial positions, the clutch still keeps in gear, so that the clutch can meet the use requirement of keeping in gear.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic construction of the clutch of the present invention;

FIG. 2 shows a cross-sectional view of the clutch of FIG. 1 in one direction;

FIG. 3 shows a cross-sectional view of the clutch of FIG. 1 in another orientation;

FIG. 4 is a schematic view of the clutch of FIG. 1 with the third coupling removed;

FIG. 5 shows a schematic view of the third connector of FIG. 4 with the third connector removed;

FIG. 6 is a schematic diagram of the first clutch member of the clutch of FIG. 1 in a disengaged position;

FIG. 7 is a schematic illustration of the clutch of FIG. 1 with a first clutch member in an engaged position;

FIG. 8 is a schematic diagram showing the engagement of a second coupling member with a clutch core of the clutch of FIG. 1;

FIG. 9 is a schematic diagram showing the engagement of a first coupling member with a clutch core of the clutch of FIG. 1;

fig. 10 shows a schematic view of the engagement of the first clutch part with the first clutch groove of the clutch according to fig. 1.

Wherein the figures include the following reference numerals:

10. a first connecting member; 11. a reset protrusion; 12. a first groove; 13. a second clutch groove; 14. a first clutch groove; 20. a second connecting member; 21. an unlocking protrusion; 30. a third connecting member; 31. a second groove; 40. a first clutch member; 50. a clutch core; 51. a core recess; 52. a core unlocking slot; 53. a core reset groove; 60. a first positioning pin; 70. a second positioning pin; 80. an elastic member; 90. a second clutch member; 100. rotating the shifting piece; 110. a first reset member.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

The invention provides a clutch and a lock body, aiming at solving the problem that the clutch in the prior art does not have the function of keeping in gear. Wherein the lock body has a clutch described below.

A clutch as shown in fig. 1 to 10, which comprises a first connecting piece 10, a second connecting piece 20, a third connecting piece 30, a first clutch piece 40 and a clutch core 50, wherein the first connecting piece 10, the second connecting piece 20 and the third connecting piece 30 are axially stacked in sequence, the first connecting piece 10, the second connecting piece 20 and the third connecting piece 30 have an initial position and an unlocking position, and the first connecting piece 10 or the third connecting piece 30 can drive the second connecting piece 20 to rotate to the unlocking position; the first clutch 40 is arranged on the second connecting piece 20 in a penetrating way and rotates synchronously with the second connecting piece 20, the first clutch 40 can move along the radial direction of the second connecting piece 20, the first clutch 40 has a butt joint position and a separation position, when the first clutch 40 is positioned at the separation position, the first clutch 40 is withdrawn from the third connecting piece 30 and/or the first connecting piece 10, so that the third connecting piece 30 or the first connecting piece 10 idles relative to the second connecting piece 20, and when the first clutch 40 is positioned at the butt joint position, the first clutch 40 extends into the third connecting piece 30 and/or the first connecting piece 10, so that the third connecting piece 30 or the first connecting piece 10 can drive the second connecting piece 20 to rotate to an unlocking position; the clutch core 50 axially penetrates through the first connecting piece 10, the second connecting piece 20 and the third connecting piece 30 and can rotate in the circumferential direction, the second connecting piece 20 is provided with an unlocking protrusion 21 extending into the clutch core 50, when the second connecting piece 20 rotates to an unlocking position, the unlocking protrusion 21 drives the clutch core 50 to rotate, the rotation of the clutch core 50 drives the first clutch piece 40 to move and keep at a butting position, and when the first connecting piece 10 and the third connecting piece 30 rotate from the unlocking position to an initial position, the clutch core 50 keeps still to keep the first clutch piece 40 at the butting position.

In the present embodiment, by providing the first clutch member 40 and the clutch core 50, wherein the first clutch member 40 plays a role of controlling the abutting and separating relationship between the first connecting member 10 or the third connecting member 30 and the second connecting member 20, i.e. the gear engaging function, and the clutch core 50 plays a role of controlling the first clutch member 40, specifically, as shown in fig. 6, when the clutch is not engaged, the first clutch member 40 is located at the separating position, and at the same time, the third connecting member 30 or the first connecting member 10 and the second connecting member 20 are separated, and the second connecting member 20 is not rotated when the clutch is rotated; as shown in fig. 7, when the clutch needs to be engaged, the clutch core 50 is rotated by an unlocking key, the rotation of the clutch core 50 drives the first clutch member 40 to move to the butt-joint position, or the first clutch member 40 is driven to move to the butt-joint position by an external component such as a motor, and at this time, the first clutch member 40 makes the third connecting member 30 or the first connecting member 10 butt-joint with the second connecting member 20, so that the third connecting member 30 or the first connecting member 10 can also drive the second connecting member 20 to rotate, the first connecting member 10 or the third connecting member 30 is rotated, so that the second connecting member 20 rotates to the unlocking position, the rotation of the second connecting member 20 drives the clutch core 50, and the rotation of the clutch core 50 makes the first clutch member 40 remain at the butt-joint position and cannot be switched back to the disengagement position, even if the first connecting member 10 and the third connecting member 30 are subsequently rotated back to the initial position, because the clutch core 50 remains stationary at this time, the first clutch member 40 remains at the butt-joint position, that is the clutch is engaged all the time; if the gear is required to be released, the clutch core 50 is rotated in the reverse direction. Through the arrangement mode, the clutch has the function of keeping the gear engagement, and even if the first connecting piece 10 and the third connecting piece 30 rotate to the initial positions, the clutch still keeps the gear engagement, so that the clutch can meet the use requirement of keeping the gear engagement.

The embodiment is described by taking the clutch as an example applied to the lock body, and of course, the clutch may also be applied to other structural devices as required. The first connecting piece 10 and the third connecting piece 30 are respectively connected with the handle, and the installation direction of the clutch of the embodiment can be adjusted as required during installation, that is, the first connecting piece 10 can be installed towards the inner side of the door and can also be installed towards the outer side of the door, so that the installation direction of the clutch can be adjusted according to the door opening directions of doors with different structures and different doors, and the use of the lock body and the handle conforms to the use habit of daily pressing and unlocking of a user. Regardless of the installation, the connecting member facing the inside of the door can directly drive the second connecting member 20 to rotate to the unlocking position, and the connecting member facing the outside of the door can drive the second connecting member 20 to rotate to the unlocking position only through the first clutch member 40. When the first clutch member 40 is always kept in the butt joint position, that is, the clutch is always engaged, the handle can be rotated to open the door without rotating the clutch core 50 by a key or driving the clutch core 50 by a motor, so as to meet more occasions. For example, when people need to enter a room in succession, the door can be opened by directly pressing the outer handle without unlocking the door by a key or a mobile phone for every person coming at the moment. If a bi-directional mounting arrangement is not desired, second clutch member 90 may be fixedly disposed and first clutch member 40 may be correspondingly clutched to engage one of first coupling member 10 and third coupling member 30.

In order to achieve the above-mentioned effect of bidirectional installation, as shown in fig. 2, the clutch of this embodiment further includes a second clutch 90, the second clutch 90 is a pin member, which is inserted into the second connecting member 20 and rotates synchronously with the second connecting member 20, the second clutch 90 can move along the axial direction of the second connecting member 20, so that when installing, the position of the second clutch 90 can be adjusted to change the component engaged with the second connecting member 20, that is, when the first connecting member 10 is installed inside the door, the second clutch 90 is inserted into the first connecting member 10 and withdrawn from the third connecting member 30, so that the first connecting member 10 can drive the second connecting member 20 to rotate, and at the same time, the third connecting member 30 can drive the second connecting member 20 to rotate through the first clutch 40; when the third connecting member 30 is installed at the inner side of the door, the second clutch member 90 extends into the third connecting member 30 and exits from the first connecting member 10, so that the third connecting member 30 can drive the second connecting member 20 to rotate, and meanwhile, the first connecting member 10 can drive the second connecting member 20 to rotate only through the first clutch member 40.

The embodiment is described by taking an example that the first connecting piece 10 is installed on the inner side of the door to be matched with the inner handle, and the third connecting piece 30 is installed on the outer side of the door to be matched with the outer handle, and of course, the actual installation mode can be adjusted according to actual needs. Generally, when the handle is pressed down, the lock body is unlocked, so when the handle is not operated, the natural positions of the three connecting pieces are initial positions, and the connecting pieces which are correspondingly acted in the process of pressing down the handle rotate from the initial positions to the unlocking positions.

In the present embodiment, as shown in fig. 6 and 7, the clutch core 50 is disposed at the center of the clutch, a core concave portion 51 is disposed on the peripheral side of the clutch core 50, when the clutch core 50 rotates until the core concave portion 51 is aligned with the first clutch member 40, the first clutch member 40 can extend into the core concave portion 51, so as to withdraw from the third connecting member 30, and the first clutch member 40 is located at the separation position; and when the clutch core 50 rotates, the side wall of the core recess 51 presses the first coupling member 10, so that the first coupling member 10 exits the core recess 51, thereby switching to the butting position, and the first clutch member 40 abuts against the outer side surface of the clutch core 50. When the first clutch member 40 is driven to move using the outer member, the first clutch member 40 has already exited the core recess 51 before the clutch core 50 rotates, at which time the rotation of the clutch core 50 does not press the first clutch member 40, only the core recess 51 is misaligned with the first clutch member 40, and the outer side surface of the clutch core 50 abuts against the first clutch member 40, holding the first clutch member 40 in the abutting position.

Of course, other modes than the above-described engagement mode of the core recess 51 may be adopted, such as a mode in which a projection is provided on the peripheral side of the clutch core 50, and when the clutch core 50 rotates, the first clutch member 40 is moved to the abutting position by pressing the first clutch member 40 by the projection, and the like.

As shown in fig. 8, the clutch core 50 of the present embodiment is provided with a core unlocking groove 52, and the core unlocking groove 52 is used for cooperating with the unlocking protrusion 21. Specifically, the unlocking protrusion 21 extends into the core unlocking groove 52, when the second connecting member 20 is driven by the first connecting member 10 or the third connecting member 30 to rotate from the initial position to the unlocking position, the unlocking protrusion 21 presses the inner side of the core unlocking groove 52, so that the clutch core 50 is driven to rotate, the rotation of the clutch core 50 drives the first clutch member 40 to move to the butt joint position, and thus the effect of driving the first clutch member 40 to switch the positions through the handle is achieved.

In this embodiment, the core unlocking groove 52 extends along the circumferential direction of the clutch core 50 by a predetermined length, when the handle is reset, the second connecting member 20 automatically resets under the action of a spring and other components in the lock body, when the second connecting member 20 rotates from the unlocking position to the initial position, at this time, the unlocking protrusion 21 moves in the core unlocking groove 52, the unlocking protrusion 21 does not press the core unlocking groove 52, there is no pressing driving relationship between the two, so that the clutch core 50 does not rotate, the dislocation relationship between the core recess 51 and the first clutch member 40 is not changed even if the clutch core 50 does not rotate, so that the first clutch member 40 is kept at the butt joint position, and the gear engagement is maintained.

The reverse reset of the clutch core 50 of the present embodiment is achieved by the rotation of the first link 10 or the third link 30. Specifically, the first link 10 and the third link 30 also have a reset position, and the rotation directions of the first link 10 and the third link 30 from the initial position to the unlock position and to the reset position are opposite. Generally, the process of lifting the handle rotates the corresponding actuating linkage from the initial position to the reset position. The first connecting piece 10 and/or the third connecting piece 30 are provided with reset bulges 11 extending into the clutch core 50, and the clutch of the embodiment can be mounted in two directions, so that the reset bulges 11 are arranged on the first connecting piece 10 and the third connecting piece 30, when the lifting handle is reset, the first connecting piece 10 or the third connecting piece 30 rotates from the initial position to the reset position, at the moment, the reset bulges 11 drive the clutch core 50 to rotate reversely and reset, so that the core concave part 51 is aligned with the first clutch piece 40 again, the first clutch piece 40 can extend into the core concave part 51, the clutch can move to the separation position, and the clutch can reset. It should be noted that, no matter the clutch is unlocked through the inner handle or the outer handle, the reset of the clutch can be realized by lifting the inner handle or the outer handle after unlocking.

In addition to the above, the unlocking key may directly drive the reverse reset of the clutch core 50. Specifically, the clutch core 50 of the present embodiment is provided with an unlocking hole into which an unlocking key is inserted, and the unlocking key is inserted into the unlocking hole and can drive the clutch core 50 to rotate in a reverse direction, so that the clutch core 50 is aligned with the first clutch member 40, and the first clutch member 40 can move to the release position, so that the clutch core 50 is directly driven to reset by the unlocking key. It should be noted that, the two ways of returning by lifting the handle and returning by directly driving the clutch core 50 by the unlocking key can be selectively set in one or two ways according to the requirement. The embodiment is provided with the two reset modes simultaneously, so that the clutch is provided with three ways to relieve the gear engaging state, namely, the inner handle is lifted, the outer handle is lifted, and the clutch core is rotated by the unlocking key.

As shown in fig. 9, the clutch core 50 has two core reset grooves 53, the two core reset grooves 53 may be provided as required, the two core reset grooves 53 may be respectively engaged with the reset protrusions 11 of the two coupling members, the reset protrusions 11 extend into the corresponding core reset grooves 53, and the core reset grooves 53 extend along the circumferential direction of the clutch core 50 by a predetermined length, similar to the core unlock grooves 52. Thus, when the first link 10 or the third link 30 rotates from the initial position to the unlock position, the reset protrusion 11 moves in the core reset groove 53, the reset protrusion 11 does not press the core reset groove 53, and does not rotate the clutch core 50, thereby not affecting the function between the core unlock groove 52 and the unlock protrusion 21; when the first connecting member 10 or the third connecting member 30 rotates from the initial position to the reset position, the unlocking protrusion 21 does not press the core unlocking groove 52, but the reset protrusion 11 presses the core resetting groove 53 at this time and drives the clutch core 50 to rotate in the reverse direction, so that the first clutch member 40 can move to the release position, and thus, the core unlocking groove 52 is engaged with the unlocking protrusion 21 to realize the rotation of unlocking the clutch core 50, and the core resetting groove 53 is engaged with the resetting protrusion 11 to realize the resetting of locking the clutch core 50.

As shown in fig. 3, the clutch further includes a first positioning pin 60, a second positioning pin 70 and an elastic member 80, the first positioning pin 60 axially slidably penetrates the clutch core 50, the first connecting member 10 is provided with a plurality of first grooves 12, the first positioning pin 60 can extend out of the clutch core 50 and into the first grooves 12, or retract into the clutch core 50 to switch between the first grooves 12; the second positioning pin 70 axially slidably penetrates through the clutch core 50, the second positioning pin 70 and the first positioning pin 60 are coaxially arranged, the third connecting member 30 is provided with a plurality of second grooves 31, and the second positioning pin 70 can extend out of the clutch core 50 and into the second grooves 31, or retract into the clutch core 50 to switch between the second grooves 31. The first recess 12 and the second recess 31 of the present embodiment are each provided in two, and the first positioning pin 60 can be switched between the two first recesses 12, and the second positioning pin 70 can also be switched between the two second recesses 31. As shown in fig. 5, since the first connector 10 and the third connector 30 of the present embodiment have the same structure, fig. 5 may show the third connector 30 or the first connector 10. The elastic member 80 of the present embodiment is a spring, the elastic member 80 is disposed between the first positioning pin 60 and the second positioning pin 70, and both ends of the elastic member are respectively abutted against the first positioning pin 60 and the second positioning pin 70, so as to respectively provide elastic force for the first positioning pin 60 and the second positioning pin 70 to extend into the first groove 12 and the second groove 31. Through the cooperation between the first positioning pin 60 and the second positioning pin 70 and the first connecting piece 10 and the third connecting piece 30, the accurate control of the rotation of the clutch core 50 is realized. In particular, the method of manufacturing a semiconductor device,

when the first connecting piece 10 rotates from the initial position to the unlocking position, the first connecting piece 10 drives the clutch core 50 to rotate, the first positioning pin 60 synchronously rotates and does not axially move, and the third connecting piece 30 keeps still, so the second positioning pin 70 axially moves and exits the second groove 31 to retract into the clutch core 50; when the first link 10 is moved to the unlock position, the second positioning pin 70 is aligned with the other second recess 31 and extends into the second recess 31.

When the first connecting member 10 rotates from the unlock position to the initial position, the third connecting member 30 remains stationary, the second positioning pin 70 remains stationary, and the clutch core 50 remains stationary since the second positioning pin 70 is stopped between the clutch core 50 and the third connecting member 30, and the first positioning pin 60 exits the first groove 12 and retracts into the clutch core 50; when the first connecting member 10 is rotated to the initial position, the first positioning pin 60 is aligned with another first recess 12 and extends into the first recess 12.

When the first connecting member 10 rotates from the initial position to the reset position, the first positioning pin 60 and the second positioning pin 70 are engaged with the first connecting member 10 and the third connecting member 30 in the same manner as when the first connecting member 10 rotates from the initial position to the unlocking position; the manner of engagement when the first link 10 moves to the reset position is the same as when the first link 10 moves to the unlock position, and is not described herein again.

When the first connecting member 10 rotates from the reset position to the initial position, the engagement manner between the first positioning pin 60 and the second positioning pin 70 and the first connecting member 10 and the third connecting member 30 in the process is the same as that when the first connecting member 10 rotates from the unlock position to the initial position, and the engagement manner when the first connecting member 10 rotates to the initial position is also the same, which is not described herein again.

The above-mentioned action-matching manner is exemplified by rotating the first connecting member 10, when the third connecting member 30 is rotated, the first connecting member 10 and its related components are replaced with the third connecting member 30 and its related components, and the third connecting member 30 and its related components are replaced with the first connecting member 10 and its related components.

In this embodiment, in order to match the installation manner of the bidirectional installation, the end of the first clutch member 40 engaged with the clutch core 50 in the present embodiment extends along the axial direction of the clutch by a predetermined length, and the length is greater than the axial length of the second coupling member 20, so that when the first clutch member 40 moves to the butt position, both ends of the end of the first coupling member 10 along the axial direction of the clutch respectively extend into the first coupling member 10 and the third coupling member 30. With respect to first coupling member 10, when first coupling member 10 is installed inside the door, since rotation between first coupling member 10 and second coupling member 20 has been achieved by second clutch 90, the extension of first clutch 40 into first coupling member 10 does not affect the relationship between first coupling member 10 and second coupling member 20. When the first connecting member 10 is installed on the door outer side, the first clutch member 40 extends into the first connecting member 10, so that the first connecting member 10 drives the second connecting member 20 to rotate through the first clutch member 40. The same applies to the third connecting element 30. In this way, the first clutch member 40 can be effectively engaged with the first connecting member 10 or the third connecting member 30 regardless of how the clutch is installed, so that the lock body can be installed bidirectionally as desired.

In the present embodiment, as shown in fig. 5 and 10, the first connecting member 10 and/or the third connecting member 30 is/are provided with a first engaging and disengaging groove 14, and the first engaging and disengaging groove 14 extends along the circumferential direction of the clutch by a predetermined length. Since the first clutch member 40 of the present embodiment extends into the first connecting member 10 and the third connecting member 30 when moving to the docking position, the first engaging and disengaging grooves 14 are formed on both the first connecting member 10 and the third connecting member 30, and the first engaging and disengaging grooves 14 are symmetrically arranged between the first engaging and disengaging grooves 14. The length of the first clutch groove 14 is greater than the thickness of the first clutch member 40 in the circumferential direction.

Since the first coupling member 10 is installed inside the door in this embodiment, the first coupling member 10 drives the second coupling member 20 to rotate via the second clutch member 90, and the third coupling member 30 drives the second coupling member 20 to rotate via the first clutch member 40, so that the first clutch grooves 14 are all the first clutch grooves 14 on the third coupling member 30. When the first clutch 40 moves to the butt joint position, the first clutch 40 extends into the first clutch groove 14, and at the moment, when the third connecting piece 30 rotates from the initial position to the unlocking position, the inner wall of the first clutch groove 14 extrudes the first clutch 40 to drive the second connecting piece 20 to rotate, so as to realize unlocking; when the first connecting member 10 rotates to the unlocking position, the first connecting member 10 drives the second connecting member 20 to rotate, the first clutch member 40 moves in the first clutch groove 14, at this time, the inner wall of the first clutch groove 14 does not press the first clutch member 40, the first clutch member 40 and the second connecting member 20 do not rotate, the third connecting member 30 is not affected, and the third connecting member 30 is kept still. When the first clutch member 40 is in the disengaged position, there is naturally no relationship between the second coupling member 20 and the third coupling member 30, and rotation of the first coupling member 10 and the second coupling member 20 will naturally have no effect on the third coupling member 30. On one hand, the arrangement mode ensures that the third connecting piece 30 can drive the second connecting piece 20 to rotate through the first clutch piece 40 when rotating, and ensures effective unlocking; on the other hand, rotation of the first coupling member 10 will not affect the third coupling member 30, i.e., the inner handle will not affect the outer handle when the inner handle is rotated, regardless of whether the first clutch member 40 is engaged or disengaged. When the third link 30 is installed inside the door, the positional relationship between the first link 10 and the third link 30 may be interchanged.

Similar to the above-mentioned case that the rotation of the inner handle does not affect the outer handle, in order to achieve the effect that the rotation of the outer handle does not affect the inner handle, as shown in fig. 9, the second clutch member 90 can extend into the second clutch groove 13 by forming the second clutch groove 13 in the first connecting member 10 and/or the third connecting member 30. Similar to the first clutch groove 14, in order to cooperate with each component to still function when realizing bidirectional installation, the second clutch grooves 13 are respectively formed on the first connecting piece 10 and the third connecting piece 30, and the second clutch grooves 13 on the first connecting piece and the third connecting piece are symmetrically arranged. The length of the second clutch groove 13 is greater than the thickness of the second clutch member 90 in the circumferential direction. For the same reason as described above, the second engagement grooves 13 described below are all the second engagement grooves 13 on the first link 10. When the first connecting piece 10 rotates to the unlocking position, the second clutch piece 90 is extruded by the second clutch groove 13, and the second connecting piece 20 is driven to rotate, so that unlocking is realized; when the first clutch 40 is located at the docking position and the third connecting member 30 rotates to the unlocking position, the third connecting member 30 drives the second connecting member 20 to rotate through the first clutch 40, the second clutch 90 moves in the second clutch groove 13, and at this time, the inner wall of the second clutch groove 13 does not press the second clutch 90, so that the first connecting member 10 remains stationary. When the first clutch 40 is in the disengaged position, there is naturally no relationship between the second coupling member 20 and the third coupling member 30, and rotation of the third coupling member 30 naturally has no effect on the first coupling member 10 and the second coupling member 20. On one hand, the arrangement mode ensures that the first connecting piece 10 can drive the second connecting piece 20 to rotate through the first clutch piece 40 when rotating, and ensures effective unlocking; on the other hand, whether the first clutch member 40 is engaged or disengaged, rotation of the third coupling member 30 does not affect the first coupling member 10, i.e., the outer handle does not affect the inner handle when the outer handle is rotated. When the third connecting member 30 is installed inside the door, the positional relationship between the first connecting member 10 and the related components thereof and the third connecting member 30 and the related components thereof may be interchanged.

This embodiment is through the cooperation of above-mentioned first clutch 40 with first separation and reunion groove 14 to and the cooperation of second clutch 90 with second separation and reunion groove 13, makes no matter first clutch 40 is put into gear or is not put into gear at the separation position in the butt joint position, all relatively independent rotation unblocks between interior handle and the outer handle, pushes down interior handle promptly and does not influence outer handle, pushes down outer handle and does not influence interior handle yet, thereby realizes the effect that interior handle does not influence each other.

The clutch of this embodiment still includes the mounting, and the mounting radially wears to establish on second connecting piece 20, and the mounting can adopt parts such as screw as required, and its effect lies in after the position of adjustment second clutch 90, locks the position of second clutch 90 through the mode of mounting with second clutch 90 butt, avoids the position change of installation back second clutch 90 and causes the condition that the clutch became invalid.

As shown in fig. 2, the clutch further includes a first reset member 110, the first reset member 110 may be a spring as required, and both ends of the spring are respectively abutted against the first clutch member 40 and the second connecting member 20, and provide a reset force for the first reset member 110 to move to the release position, so that when the first clutch member 40 is not pressed by the clutch core 50 and pulled by the outer member, the first clutch member 40 always has a tendency to move in a direction extending into the core recess 51 under the action of the first reset member 110, thereby achieving automatic reset of the first clutch member 40. In addition, other resetting pieces can be added as required to realize automatic resetting of the first connecting piece 10, the second connecting piece 20, the third connecting piece 30 and other parts.

In this embodiment, the clutch further includes a rotary dial 100, the rotary dial 100 is connected to the second connecting member 20 and rotates synchronously with the second connecting member 20, the rotary dial 100 may be disposed integrally with or separately from the second connecting member 20, and the rotary dial 100 is configured to cooperate with a component of the lock body, for example, a main bolt connecting member, a dial connecting member, etc., to change an unlocking state of the lock body. The rotary shifting piece 100 can facilitate the processing of the rotary shifting piece 100 and the second connecting piece 20 on one hand, and the processing difficulty and cost are reduced; on the other hand, the stress condition of the rotary shifting piece 100 is improved, the condition that the stress of the rotary shifting piece 100 and the stress of the matched parts are too large is avoided, and the service life is prolonged.

The clutch of the embodiment is used as follows:

when the inner handle is pressed downwards at the inner side of the door, the inner handle drives the first connecting piece 10 to rotate to the unlocking position, the first connecting piece 10 extrudes the inner wall of the second clutch groove 13 through the second clutch piece 90, and therefore the second connecting piece 20 is driven to rotate to the unlocking position, the clutch is unlocked, and the lock body is unlocked.

While the first coupling member 10 and the second coupling member 20 rotate, the first clutch member 40 also rotates, and if the first clutch member 40 is located at the separation position, the third coupling member 30 does not naturally rotate, and if the first clutch member 40 is located at the butt position, the first clutch member 40 moves in the first clutch groove 14, and the first clutch member 40 does not press against the side wall of the first clutch groove 14, so that the third coupling member 30 is not driven to rotate, and the outer handle remains stationary.

When the first connecting piece 10 and the second connecting piece 20 rotate, the first connecting piece 10 drives the second connecting piece 20 to rotate, the second connecting piece 20 drives the clutch core 50 to rotate through the unlocking protrusion 21, the first positioning pin 60 synchronously rotates and does not axially move, the second positioning pin 70 axially moves and exits the second groove 31 to retract into the clutch core 50, and until the second positioning pin 70 is aligned with the other second groove 31 and extends into the second groove 31 when the first connecting piece 10 rotates to the unlocking position.

When the inner handle is released after being pressed down, the first connecting piece 10 and the second connecting piece 20 rotate reversely and reset, and the two synchronously reset to the initial positions. Since the third connecting member 30 is stationary and one end of the second positioning pin 70 extends into one of the second grooves 31 of the third connecting member 30, the second positioning pin 70 remains stationary, so that the clutch core 50 remains stationary, i.e., the core recess 51 of the clutch core 50 is maintained to be misaligned with the first clutch member 40, so that the clutch is in a gear engaging state. When the first connecting member 10 is rotated reversely to the initial position, the first connecting member 10 compresses the first positioning pin 60 to retreat out of the first recess 12 and retract into the clutch core 50 until the first positioning pin 60 is aligned with the first recess 12 and extends into the first recess 12 when the first connecting member 10 is rotated back to the initial position. In the process, the whole clutch core 50 is kept still, so that the first clutch member 40 is always positioned at the butt joint position, namely, the clutch is always kept in gear engagement, and the door can be opened by directly pressing the inner handle and the outer handle without unlocking again.

When the inner handle is lifted up inside the door, the inner handle drives the first connecting member 10 to rotate to the reset position, and the first connecting member 10 does not drive the second connecting member 20 to rotate to the reset position since the second clutch member 90 moves in the second clutch groove 13. When the first connecting member 10 rotates, the clutch core 50 is directly driven to rotate reversely and reset by the reset protrusion 11 thereon, so that the core recess 51 is aligned with the first clutch member 40 again, and the first clutch member 40 can move back to the separation position. Since the first coupling member 10 and the clutch core 50 rotate together, and the third coupling member 30 does not move, the first positioning pin 60 rotates synchronously with the first coupling member 10 and the clutch core 50 and does not move axially, and the second positioning pin 70 moves axially and retreats out of the second recess 31 to retract into the clutch core 50 until the second positioning pin 70 is aligned with the first second recess 31 and extends into the second recess 31 when the first coupling member 10 rotates to the reset position. When the inner handle is released after being lifted up, the first connecting piece 10 and the second connecting piece 20 have no driving effect, and the action matching mode between the first positioning pin 60 and the second positioning pin 70 is the same as that when the inner handle is released after being pressed down. After the inner handle is lifted up, the whole clutch is reset and is restored to the state without engaging gears again.

When the outer handle is pressed down on the outer side of the door, the outer handle drives the third connecting piece 30 to rotate to the unlocking position, and if the first clutch piece 40 is positioned at the separation position, the third connecting piece 30 cannot drive the second connecting piece 20 to rotate, so that unlocking cannot be realized; if the first clutch member 40 is located at the docking position, the third connecting member 30 presses the inner wall of the first clutch groove 14 through the first clutch member 40, so as to drive the second connecting member 20 to rotate to the unlocking position, the clutch is unlocked, and the lock body is unlocked.

At the same time when the third connecting member 30 and the second connecting member 20 rotate, the second clutch member 90 also rotates, at this time, the second clutch member 90 rotates in the second engaging groove 13, and the second clutch member 90 has no squeezing effect with the side wall of the second engaging groove 13, so that the first connecting member 10 is not driven to rotate, and the inner handle remains stationary.

When the third connecting piece 30 and the second connecting piece 20 rotate, the third connecting piece 30 drives the second connecting piece 20 to rotate, the second connecting piece 20 drives the clutch core 50 to rotate through the unlocking protrusion 21, the second positioning pin 70 synchronously rotates and does not axially move, the first positioning pin 60 axially moves and exits the first groove 12 to retract into the clutch core 50, and until the third connecting piece 30 rotates to the unlocking position, the first positioning pin 60 is aligned with the other first groove 12 and extends into the first groove 12.

When the outer handle is released after being pressed down, the third connecting piece 30 and the second connecting piece 20 rotate reversely and reset, and the third connecting piece and the second connecting piece synchronously reset to the initial position. Since the first connecting member 10 is stationary and one end of the first positioning pin 60 extends into one of the first grooves 12 of the first connecting member 10, the first positioning pin 60 remains stationary, so that the clutch core 50 remains stationary, that is, the core recess 51 of the clutch core 50 is maintained to be staggered with respect to the first clutch member 40, and the clutch is in a gear engaging state. When the third link 30 is rotated reversely to the initial position, the third link 30 compresses the second positioning pin 70 to be withdrawn out of the second groove 31 and retracted into the clutch core 50 until the second positioning pin 70 is aligned with the initial second groove 31 and extended into the second groove 31 when the third link 30 is rotated back to the initial position. In the process, the whole clutch core 50 is kept still, so that the first clutch piece 40 is always positioned at the butt joint position, namely the clutch is always kept in gear, the unlocking is not needed again, and the door can be opened by directly pressing the inner handle and the outer handle.

When the outer handle is lifted up on the outside of the door, the outer handle drives the third link 30 to rotate to the reset position, and the third link 30 does not drive the second link 20 to rotate to the reset position since the first clutch 40 moves in the first clutch groove 14. When the third connecting piece 30 rotates, the clutch core 50 is directly driven to reversely rotate and reset by the reset bulge 11 on the third connecting piece, so that the core concave part 51 is aligned with the first clutch piece 40 again, and the first clutch piece 40 can move back to the separation position. Since the third link 30 and the clutch core 50 rotate together while the first link 10 does not move, the second positioning pin 70 follows the third link 30 and the clutch core 50 to rotate synchronously without moving axially, the first positioning pin 60 moves axially and exits the first recess 12 to retract into the clutch core 50 until the first positioning pin 60 is aligned with the first recess 12 and extends into the first recess 12 when the third link 30 rotates to the reset position. When the outer handle is released after being lifted up, there is no driving effect between the third connecting piece 30 and the second connecting piece 20, and the action matching mode between the first positioning pin 60 and the second positioning pin 70 is the same as that when the outer handle is released after being pressed down. After the outer handle is lifted up, the whole clutch resets and is restored to the state without engaging gears again.

It should be noted that, a plurality in the above embodiments means at least two.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

1. the problem that the clutch in the prior art does not have the function of keeping in gear is solved;

2. the clutch has the function of keeping in gear, and even if the first connecting piece and the third connecting piece rotate to the initial positions, the clutch still keeps in gear;

3. the first positioning pin and the second positioning pin can realize accurate control of the rotation of the clutch core;

4. the bidirectional installation of the clutch and the lock body can be realized by changing the position of the second clutch piece, and the installation is simple and convenient;

5. the action between first connecting piece and the third connecting piece does not influence each other for do not influence each other between the handle of indoor outside.

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

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

Claims (13)

1. A clutch, comprising:

a first connecting member (10);

a second connecting member (20);

the first connecting piece (10), the second connecting piece (20) and the third connecting piece (30) are axially and sequentially overlapped, the first connecting piece (10), the second connecting piece (20) and the third connecting piece (30) have an initial position and an unlocking position, and the first connecting piece (10) or the third connecting piece (30) can drive the second connecting piece (20) to rotate to the unlocking position;

a first clutch (40), wherein the first clutch (40) is arranged on the second connecting piece (20) in a penetrating manner and rotates synchronously with the second connecting piece (20), the first clutch (40) can move along the radial direction of the second connecting piece (20), the first clutch (40) has an abutting position and a separating position, when the first clutch (40) is located at the separating position, the first clutch (40) is withdrawn from the third connecting piece (30) and/or the first connecting piece (10) so that the third connecting piece (30) or the first connecting piece (10) idles relative to the second connecting piece (20), and when the first clutch (40) is located at the abutting position, the first clutch (40) extends into the third connecting piece (30) and/or the first connecting piece (10) so that the third connecting piece (30) or the first connecting piece (10) can drive the second connecting piece (20) to rotate towards the unlocking position;

a clutch core (50), the clutch core (50) axially penetrates the first connecting member (10), the second connecting member (20) and the third connecting member (30) and can circumferentially rotate, the clutch core (50) plays a control role for the first clutch member (40), when the clutch is in gear, the clutch core (50) is rotated through an unlocking key, the rotation of the clutch core (50) drives the first clutch member (40) to move to the butt joint position, or the first clutch member (40) is driven to move to the butt joint position through an external member, the first clutch member (40) abuts the third connecting member (30) or the first connecting member (10) and the second connecting member (20), so that the third connecting member (30) or the first connecting member (10) can drive the second connecting member (20) to rotate, the first connecting member (10) or the third connecting member (30) is rotated, the second connecting member (20) rotates, the second connecting member (20) has a second connecting member protrusion extending into the second connecting member (20), and the clutch core (50) rotates to keep the clutch core (50) in the second connecting member (20), and the unlocking core (50) rotates, cannot be switched back to the disengaged position.

2. The clutch according to claim 1, characterized in that the clutch core (50) has a core recess (51), the first clutch member (40) extends into the core recess (51) when the clutch core (50) is rotated to the extent that the core recess (51) is aligned with the first clutch member (40), the first clutch member (40) is located at the disengaged position, the first clutch member (40) abuts against an outer side surface of the clutch core (50) when the clutch core (50) is rotated to the extent that the core recess (51) is misaligned with the first clutch member (40), the first clutch member (40) being held at the engaged position.

3. The clutch according to claim 2, characterized in that the clutch core (50) is provided with an unlocking hole into which an unlocking key is inserted, the unlocking key is inserted into the unlocking hole and can drive the clutch core (50) to rotate in a reverse direction, so that the clutch core (50) is aligned with the first clutch member (40), and the first clutch member (40) can move to the separation position.

4. The clutch according to any one of claims 1 to 3, characterized in that the clutch core (50) is provided with a core unlocking groove (52), the unlocking protrusion (21) extends into the core unlocking groove (52), and when the second connecting member (20) is driven by the first connecting member (10) or the third connecting member (30) to rotate from the initial position to the unlocking position, the unlocking protrusion (21) presses the inner side of the core unlocking groove (52) to drive the clutch core (50) to rotate, so as to drive the first clutch member (40) to move to the butting position.

5. The clutch according to claim 4, wherein the core release groove (52) extends in a circumferential direction of the clutch core (50) by a predetermined length, and when the second link (20) rotates from the release position to the initial position, the release protrusion (21) moves in the core release groove (52), and the release protrusion (21) does not press the core release groove (52) without rotating the clutch core (50).

6. Clutch according to claim 1, characterized in that the first coupling part (10) and the third coupling part (30) also have a reset position, and the first coupling part (10) and the third coupling part (30) are rotated in opposite directions from the starting position into the unlocking position and into the reset position, and the first coupling part (10) and/or the third coupling part (30) have a reset projection (11) which projects into the clutch core (50), and when the first coupling part (10) or the third coupling part (30) is rotated from the starting position into the reset position, the reset projection (11) drives the clutch core (50) into a reverse rotation, so that the first clutch part (40) can be moved into the disengaged position.

7. The clutch according to claim 6, wherein the clutch core (50) has a core return groove (53), the return protrusion (11) protrudes into the core return groove (53), the core return groove (53) extends along a circumferential direction of the clutch core (50) by a predetermined length, the return protrusion (11) moves in the core return groove (53) when the first connecting member (10) or the third connecting member (30) rotates from the initial position to the unlocking position, and the return protrusion (11) does not press the core return groove (53) and does not rotate the clutch core (50); when the first connecting piece (10) or the third connecting piece (30) rotates from the initial position to the reset position, the reset protrusion (11) extrudes the core reset groove (53) and drives the clutch core (50) to rotate reversely, so that the first clutch piece (40) can move to the separation position.

8. The clutch of claim 6, further comprising:

the first positioning pin (60) is axially slidably arranged on the clutch core (50) in a penetrating manner, the first connecting piece (10) is provided with a plurality of first grooves (12), and the first positioning pin (60) can extend out of the clutch core (50) and extend into the first grooves (12) or retract into the clutch core (50) so as to switch between the first grooves (12);

the second positioning pin (70) is axially and slidably arranged on the clutch core (50) in a penetrating manner, the third connecting piece (30) is provided with a plurality of second grooves (31), and the second positioning pin (70) can extend out of the clutch core (50) and extend into the second grooves (31) or retract into the clutch core (50) so as to switch between the second grooves (31);

an elastic member (80), the elastic member (80) being disposed between the first positioning pin (60) and the second positioning pin (70) and providing the first positioning pin (60) and the second positioning pin (70) with elastic forces extending into the first recess (12) and the second recess (31), respectively;

when the first connecting piece (10) or the third connecting piece (30) rotates from the initial position to the unlocking position, or when the first connecting piece (10) or the third connecting piece (30) rotates from the initial position to the resetting position, the first connecting piece (10) or the third connecting piece (30) drives the clutch core (50) to rotate, the first positioning pin (60) or the second positioning pin (70) synchronously rotate and do not axially move, and the second positioning pin (70) or the first positioning pin (60) axially moves and retracts into the clutch core (50); when the first connector (10) or the third connector (30) is moved to the unlocking position or the reset position, the second positioning pin (70) or the first positioning pin (60) is aligned with the second groove (31) or the first groove (12) and extends into the second groove (31) or the first groove (12);

when the first connecting piece (10) or the third connecting piece (30) rotates from the unlocking position to the initial position, or when the first connecting piece (10) or the third connecting piece (30) rotates from the resetting position to the initial position, the third connecting piece (30) or the first connecting piece (10) is kept still, the second positioning pin (70) or the first positioning pin (60) is kept still, the clutch core (50) is kept still, and the first positioning pin (60) or the second positioning pin (70) exits from the first groove (12) or the second groove (31); when the first connector (10) or the third connector (30) is rotated to the initial position, the first positioning pin (60) or the second positioning pin (70) is aligned with the first groove (12) or the second groove (31) and extends into the first groove (12) or the second groove (31).

9. The clutch according to claim 1, characterized in that the clutch further comprises a second clutch member (90), the second clutch member (90) is arranged on the second connecting member (20) in a penetrating manner and rotates synchronously with the second connecting member (20), the second clutch member (90) can move along the axial direction of the second connecting member (20) to extend into the first connecting member (10) when being installed, so that the first connecting member (10) can drive the second connecting member (20) to rotate, or extend into the third connecting member (30), so that the third connecting member (30) can drive the second connecting member (20) to rotate.

10. Clutch according to claim 9, characterized in that the first connecting part (10) and/or the third connecting part (30) are provided with a second clutch recess (13), the second clutch (90) can extend into the second clutch recess (13), when the first connecting part (10) or the third connecting part (30) is rotated to the unlocking position, the second clutch recess (13) presses the second clutch (90) and drives the second connecting part (20) to rotate; when the first clutch piece (40) is located at the butt joint position and the third connecting piece (30) or the first connecting piece (10) rotates towards the unlocking position, the second clutch piece (90) moves in the second clutch groove (13), the inner wall of the second clutch groove (13) does not press the second clutch piece (90), and the first connecting piece (10) or the third connecting piece (30) keeps still.

11. The clutch according to claim 1, characterized in that the first connecting member (10) and/or the third connecting member (30) is provided with a first clutch groove (14), the first clutch groove (14) extends along the circumferential direction of the clutch for a predetermined length, when the first clutch member (40) moves to the butting position, the first clutch member (40) extends into the first clutch groove (14), and when the third connecting member (30) or the first connecting member (10) rotates from the initial position to the unlocking position, the inner wall of the first clutch groove (14) presses the first clutch member (40) to drive the second connecting member (20) to rotate; when the first connecting piece (10) or the third connecting piece (30) rotates to the unlocking position, the first clutch piece (40) moves in the first clutch groove (14), the inner wall of the first clutch groove (14) does not press the first clutch piece (40), and the third connecting piece (30) or the first connecting piece (10) keeps still.

12. The clutch according to claim 1, further comprising a first restoring member (110), wherein both ends of the first restoring member (110) abut against the first clutch member (40) and the second coupling member (20), respectively, and provide a restoring force for the first restoring member (110) to move to the disengaged position.

13. A lock body, characterized in that it comprises a clutch according to any one of claims 1 to 12.

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