CN210828651U - Clutch and lock - Google Patents

Abstract

The utility model provides a clutch and tool to lock, this clutch includes: the rotating seat is provided with a first limiting structure; the rotating block is connected with the rotating seat, the rotating block is provided with a second limiting structure, the rotating seat can rotate relative to the rotating block, and the rotating seat has an initial state and a rotating state relative to the rotating block; the elastic piece is arranged between the rotating seat and the rotating block and provided with a fixed section and a free section which are arranged relatively, the fixed section of the elastic piece is fixedly connected with one of the rotating seat and the rotating block, the free section of the elastic piece is abutted against the other of the rotating seat and the rotating block, and when the rotating seat is in an initial state, the elastic piece is used for aligning the first limiting structure and the second limiting structure so as to limit the rotating seat to rotate relative to the rotating block through the matching of the first limiting structure and the second limiting structure. Through the technical scheme provided by the application, the problem of low reliability in the prior art can be solved.

Description

Clutch and lock

Technical Field

The utility model relates to a clutch mechanism technical field particularly, relates to a clutch and tool to lock.

Background

Generally, the smart lock includes a handle, a panel, a reset mechanism, a clutch, and a lock body, and the handle, the reset mechanism, the clutch, and the lock body are all disposed on the panel. The clutch comprises a rotating seat and a rotating block, and the rotating seat can rotate relative to the rotating block. And the rotating seat is in driving connection with the handle, the rotating block is in driving connection with the lock body, and the resetting mechanism is used for resetting the handle to enable the handle and the rotating seat to be restored to the initial state. Specifically, be provided with first through-hole on the seat rotates, be provided with the second through-hole on the turning block, still be provided with the pin corresponding first through-hole and second through-hole, when the pin inserts first through-hole and second through-hole simultaneously, rotate seat and turning block synchronous rotation, through rotating the handle, the turning block can rotate along with the seat that rotates, and the turning block can drive the lock body and accomplish to unblank this moment.

In the prior art, the rotating seat and the handle as well as the rotating block and the lock body are in clearance fit, and when the lock body and the panel are installed, installation errors are easy to occur. Therefore, when the rotating seat and the rotating block are in the initial state, the situation that the first through hole of the rotating seat and the second through hole of the rotating block cannot be aligned easily occurs, so that the pin cannot be inserted into the first through hole and the second through hole at the same time, and therefore unlocking failure is caused. The clutch in the prior art has the problem of low reliability.

SUMMERY OF THE UTILITY MODEL

The utility model provides a clutch and tool to lock to solve the low problem of reliability among the prior art.

According to an aspect of the present invention, there is provided a clutch, the clutch including: the rotating seat is provided with a first limiting structure; the rotating block is connected with the rotating seat, the rotating block is provided with a second limiting structure, the rotating seat can rotate relative to the rotating block, and the rotating seat has an initial state and a rotating state relative to the rotating block; the elastic piece is arranged between the rotating seat and the rotating block and provided with a fixed section and a free section which are arranged relatively, the fixed section of the elastic piece is fixedly connected with one of the rotating seat and the rotating block, the free section of the elastic piece is abutted against the other of the rotating seat and the rotating block, and when the rotating seat is in an initial state, the elastic piece is used for aligning the first limiting structure and the second limiting structure so as to limit the rotating seat to rotate relative to the rotating block through the matching of the first limiting structure and the second limiting structure.

Furthermore, the rotating seat is provided with a mounting hole, the rotating block is partially arranged in the mounting hole, the fixed section of the elastic piece is fixedly connected with the rotating seat, the rotating seat is provided with an avoiding hole, and the free section of the elastic piece penetrates through the avoiding hole to be abutted against the rotating block.

Further, the free section of elastic component has the interior concave section that sets up in order along the extending direction and the section of bending, and interior concave section setting is dodging downthehole and with turning block looks butt, and the section of bending is located the outside of rotating the seat, and the section of bending and the outer wall cooperation that rotates the seat to the relative position of restriction free section and rotation seat.

Furthermore, an avoiding groove is formed in the inner wall of the mounting hole, a boss is arranged on the outer wall of the rotating block and located in the avoiding groove, and the boss is matched with the groove wall of the avoiding groove to limit the rotating range of the rotating seat relative to the rotating block.

Further, the boss is in butt joint with the free section of elastic component, dodges the groove and has first end and the second end that sets up along circumference, and when the boss with dodge the cell wall looks butt of the first end of groove, first limit structure and second limit structure aim at.

Further, the clutch still includes the briquetting, and the elastic component setting is rotated between seat and the briquetting, and the briquetting is used for fixing the elastic component.

Furthermore, be provided with first hole on the seat that rotates, be provided with the second hole on the turning block, first hole forms first limit structure, and second hole forms second limit structure, and the clutch still includes the pin, and the movably setting of pin is downthehole at first hole and second, through pin and first hole and the cooperation of second hole to the relative turning block of restriction seat rotates.

Further, the clutch further includes: the limiting piece is arranged between the pin and the rotating seat and used for limiting the position of the pin in the first hole; and the return spring is arranged between the pin and the rotating seat and is used for returning the pin.

According to the utility model discloses an on the other hand provides a tool to lock, and the tool to lock includes: a panel; the handle is arranged on the panel and can rotate relative to the panel; the resetting mechanism is positioned on one side of the panel, which is far away from the handle, and is used for resetting the handle; the clutch is provided, and a rotating seat of the clutch is in driving connection with the handle; and the lock body is positioned on one side of the panel, which is far away from the handle, and is in driving connection with the rotating block of the clutch.

Furthermore, the lockset also comprises a driving mechanism, the driving mechanism is arranged on the panel, the driving mechanism is in driving connection with the pin of the clutch, and the driving mechanism is used for driving the pin to move in the first hole of the rotating seat and the second hole of the rotating block.

Use the technical scheme of the utility model, this clutch is including rotating seat, turning block and elastic component. Wherein, the turning block is connected with the rotation seat, and the rotation seat can rotate relative to the turning block, and the rotation seat has first limit structure, and the turning block has the second limit structure. Through set up the elastic component between seat and turning block rotate, make the fixed section of elastic component and rotate one of them fixed connection in seat and the turning block, make the free section of elastic component and rotate another looks butt in seat and the turning block, when rotating the seat and being located initial condition, utilize the elastic component can confirm the relative position who rotates seat and turning block, and then can guarantee that first limit structure and second limit structure aim at, so that first limit structure and second limit structure cooperation restriction are rotated seat and turning block and are rotated relatively. By adopting the structure, the elastic piece is arranged between the rotating seat and the rotating block, and the relative position of the rotating seat and the rotating block is adjusted by the elastic piece, so that the alignment of the first limiting structure and the second limiting structure can be ensured, and the reliability of the clutch can be improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, 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 an exploded view of a clutch provided by the present invention;

fig. 2 is a schematic structural diagram of the clutch provided by the present invention in an initial state;

FIG. 3 shows a schematic view of the rotary base of FIG. 2 rotated 7 relative to the rotary block;

FIG. 4 shows a schematic view of the rotary base of FIG. 2 rotated 23 relative to the rotary block;

fig. 5 shows a schematic diagram of the clutch provided by the present invention when unlocking.

Wherein the figures include the following reference numerals:

10. a rotating seat; 11. mounting holes; 111. an avoidance groove; 12. avoiding holes; 13. a first hole;

20. rotating the block; 21. a boss; 22. a second hole;

30. an elastic member; 31. a fixed section; 32. a free section; 321. an inward concave section; 322. bending sections;

40. briquetting; 50. a pin; 60. a limiting member; 70. a return spring; 80. a drive mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 5, an embodiment of the present invention provides a clutch, which includes a rotating base 10, a rotating block 20, and an elastic member 30. Wherein, the turning block 20 is connected with the turning seat 10, and the turning seat 10 can rotate relative to the turning block 20, and the turning seat 10 has a first limit structure, and the turning block 20 has a second limit structure, and the first limit structure is matched with the second limit structure to limit the turning seat 10 and the turning block 20 to rotate relatively. Wherein the rotary base 10 has an initial state and a rotary state with respect to the rotary block 20. Specifically, the elastic member 30 is disposed between the rotating base 10 and the rotating block 20, and the elastic member 30 has a fixed section 31 and a free section 32 disposed opposite to each other. Wherein, the fixed section 31 of the elastic member 30 can be fixedly connected with one of the rotating seat 10 and the rotating block 20, and the free section 32 of the elastic member 30 can be abutted against the other of the rotating seat 10 and the rotating block 20. When the rotating seat 10 is in the initial state, the relative positions of the rotating seat 10 and the rotating block 20 can be determined through the elastic member 30, and then the alignment of the first limiting structure and the second limiting structure can be ensured, so that the first limiting structure and the second limiting structure cooperate to limit the relative rotation of the rotating seat 10 and the rotating block 20. Specifically, the first limiting structure and the second limiting structure have a switchable limiting state and a separable state, when the first limiting structure and the second limiting structure are in the limiting state, the first limiting structure and the second limiting structure are matched to limit the relative rotation of the rotating seat 10 and the rotating block 20, and at the moment, the unlocking operation can be performed; when first limit structure and second limit structure are in the separation state, first limit structure and second limit structure can not carry on spacingly to the relative rotation of rotating seat 10 and turning block 20, can't unblank this moment. In this embodiment, by providing the elastic member 30 as the fixed section 31 and the free section 32, the fixed section 31 can be connected to one of the rotating base 10 and the rotating block 20 to complete the fixing of the elastic member 30, and the free section 32 can be used to align the first limit structure and the second limit structure.

With the clutch provided by the present embodiment, by disposing the elastic member 30 between the rotating seat 10 and the rotating block 20, the fixed section 31 of the elastic member 30 can be fixedly connected to one of the rotating seat 10 and the rotating block 20, and the free section 32 of the elastic member 30 can be abutted to the other of the rotating seat 10 and the rotating block 20. When the rotating base 10 is in the initial state, the relative position between the rotating base 10 and the rotating block 20 can be adjusted by the elastic force of the elastic member 30, so that the first limiting structure and the second limiting structure are aligned, and the rotating base 10 and the rotating block 20 are restricted from rotating relatively by the cooperation of the first limiting structure and the second limiting structure. By arranging the elastic member 30 between the rotating seat 10 and the rotating block 20, the problem that the first limiting structure and the second limiting structure cannot be aligned in the prior art can be solved, so that the reliability of the clutch can be improved. And, when the first and second limit structures need to be switched to the limit state, the free section 32 of the elastic element 30 can adjust the relative position of the rotating seat 10 and the rotating block 20, so that the first limit structure is aligned with the second limit structure, thereby limiting the relative rotation of the rotating seat 10 and the rotating block 20. When the first limit structure and the second limit structure need to be switched to the separated state, the free section 32 can be displaced relative to the rotating seat 10 and the rotating block 20, so that the phenomenon that the elastic force generated by the elastic piece 30 on the rotating seat 10 and the rotating block 20 is too large, the relative rotation of the rotating seat 10 and the rotating block 20 is limited, and the mistaken unlocking is avoided.

Specifically, the rotary base 10 has a mounting hole 11, and the rotary block 20 may be partially disposed in the mounting hole 11. In this embodiment, the fixing section 31 of the elastic member 30 is fixedly connected to the rotating base 10. Specifically, the fixed section 31 is disposed on an outer wall of the rotating seat 10, the rotating seat 10 has an avoiding hole 12, and the free section 32 of the elastic member 30 passes through the avoiding hole 12 to abut against the rotating block 20. The free section 32 of the elastic element 30 can penetrate through the avoidance hole 12 to abut against the rotating block 20, and when the rotating seat 10 is in the initial state, the free section 32 of the elastic element 30 can adjust the relative position of the rotating seat 10 and the rotating block 20, so that the first limiting structure and the second limiting structure are aligned.

In this embodiment, the free section 32 of the elastic element 30 has an inner concave section 321 and a bending section 322 sequentially arranged along the extending direction. By disposing the concave section 321 in the avoiding hole 12 and abutting against the rotating block 20, the concave section 321 can apply an elastic force to the rotating block 20 to adjust the relative position of the rotating base 10 and the rotating block 20. Specifically, the concave section 321 has an arc-shaped structure along the extending direction. When the rotary seat 10 rotates relative to the rotary block 20, the rotary block 20 is always abutted to the concave section 321, and the concave section 321 is of an arc-shaped structure along the extending direction, so that the concave section 321 cannot apply excessive elastic force to the rotary block 20, and the rotary seat 10 cannot be linked with the rotary block 20 under the action of the elastic part 30. Through setting up the section of bending 322 in the outside of rotating seat 10 to make the section of bending 322 and the outer wall cooperation of rotating seat 10, in order to restrict the relative position of free section 32 and rotation seat 10, avoid free section 32 to get into through dodging hole 12 and rotate seat 10 in, can further promote the reliability of clutch.

Wherein, the inner wall of the mounting hole 11 is provided with an avoiding groove 111, and the outer wall of the rotating block 20 is provided with a boss 21. By disposing the protrusion 21 in the escape groove 111, when the rotating base 10 rotates relative to the rotating block 20, the protrusion 21 cooperates with the groove wall of the escape groove 111 to limit the rotating range of the rotating base 10 relative to the rotating block 20. Specifically, the avoiding hole 12 is provided on the avoiding groove 111, and the avoiding hole 12 is communicated with the avoiding groove 111.

In the embodiment, the free section 32 of the elastic element 30 passes through the avoiding hole 12 and abuts against the rotating block 20, specifically, the boss 21 abuts against the free section 32 of the elastic element 30, and when the rotating base 10 rotates relative to the rotating block 20, the free section 32 can displace relative to the boss 21. The avoiding groove 111 has a first end and a second end arranged along the circumferential direction, and when the boss 21 abuts against the groove wall of the first end of the avoiding groove 111, the first limit structure is aligned with the second limit structure under the action of the elastic force of the free section 32 of the elastic member 30.

The clutch further includes a pressing block 40, the elastic member 30 may be disposed between the rotating base 10 and the pressing block 40, and the pressing block 40 may fix the elastic member 30 on the rotating base 10. Specifically, the pressing block 40, the fixing section 31 of the elastic member 30 and the rotating base 10 are provided with through holes, and screws may sequentially pass through the through holes of the pressing block 40, the elastic member 30 and the rotating base 10 to fix the elastic member 30.

In this embodiment, the rotating base 10 is provided with a first hole 13, and the rotating block 20 is provided with a second hole 22. Wherein, the first hole 13 is arranged at the bottom of the rotating seat 10, the second hole is arranged at the bottom of the rotating block 20, and the first hole 13 is a through hole. Specifically, the first hole 13 forms a first stop structure and the second hole 22 forms a second stop structure. The clutch further comprises a pin 50, wherein the pin 50 is movably arranged in the first hole 13 and the second hole 22, and the pin 50 is matched with the first hole 13 and the second hole 22 to limit the rotation of the rotating seat 10 relative to the rotating block 20. When the pin 50 is only positioned in the first hole 13, the first limit structure and the second limit structure are in a separated state, and at this time, when the rotating seat 10 rotates relative to the rotating block 20, the rotating block 20 cannot rotate; when the pin 50 is located in the first hole 13 and the second hole 22, the first limiting structure and the second limiting structure are in a limiting state, at this time, the rotating block 20 rotates along with the rotating seat 10, and the rotating block 20 and the rotating seat 10 do not rotate relatively.

Specifically, the clutch further includes a limiter 60 and a return spring 70. The stopper 60 is disposed between the pin 50 and the rotating base 10, and the position of the pin 50 in the first hole 13 can be limited by the stopper 60. In this embodiment, the limiting member 60 is a baffle, the middle portion of the pin 50 has an annular boss, and the pin 50 is inserted into the baffle. The pin 50 is prevented from coming out of the first hole 13 by the abutment of the baffle against the annular projection of the pin 50. The return spring 70 is disposed between the pin 50 and the rotary base 10, and the return spring 70 may be disposed in the first hole 13 such that one end of the return spring 70 is in contact with the inner wall of the first hole 13, the other end of the return spring 70 is in contact with the annular boss of the pin 50, and the pin 50 is returned by the return spring 70.

In this embodiment, the elastic member 30 is a spring.

The utility model discloses another embodiment provides a tool to lock, this tool to lock includes panel, handle, canceling release mechanical system, clutch and lock body. Specifically, the handle setting is on the panel, and the handle can rotate relative to the panel, and canceling release mechanical system and lock body all are located the one side of keeping away from the handle of panel, and canceling release mechanical system is used for reseing to the handle. Wherein, the clutch is the clutch provided above, the handle is in driving connection with the rotating seat 10 of the clutch, and the lock body is in driving connection with the rotating block 20 of the clutch. Wherein, this tool to lock includes the intelligence lock.

In this embodiment, the lock further comprises a drive mechanism 80, and the drive mechanism 80 may be disposed on the panel such that the drive mechanism 80 is drivingly connected to the clutch pin 50. The pin 50 can be driven by the driving mechanism 80 to move in the first hole 13 of the rotating base 10 and the second hole 22 of the rotating block 20, so that the first limit structure and the second limit structure can be switched between the limit state and the separation state.

The device provided by the embodiment comprises the following two working states:

(1) when the control mechanism of the lock does not send an electronic unlocking signal, the driving mechanism 80 does not move the pin 50 into the second hole 22 of the rotating block 20, at this time, the pin 50 is only located in the first hole 13, and the first limiting structure and the second limiting structure are in a separated state. When the handle is rotated, the handle drives the rotating seat 10 to rotate, the rotating seat 10 can rotate relative to the rotating block 20, and the rotating block 20 cannot rotate relative to the lock body, so that the lock cannot be unlocked. Moreover, during the rotation of the rotating seat 10 relative to the rotating block 20, the free section 32 of the elastic element 30 is always kept in contact with the side wall of the rotating block 20, and when the rotating seat 10 returns to the initial state, the axis of the first hole 13 is aligned with the axis of the second hole 22;

(2) when the control mechanism of the lock sends an electronic signal for unlocking, the driving mechanism 80 will move the pin 50 into the first hole 13 of the rotating base 10 and the second hole 22 of the rotating block 20 simultaneously, and at this time, the first limit structure and the second limit structure are in a limit state. When the handle is rotated, the handle drives the rotating seat 10 to rotate, the rotating seat 10 drives the rotating block 20 to rotate, and thus the rotating block 20 drives the lock body to rotate, so as to complete unlocking of the lock. Moreover, when the rotating base 10 is in the initial state, under the action of the elastic force of the elastic member 30, the first hole 13 will be aligned with the second hole 22, so that the pin 50 can be ensured to pass through the first hole 13 and be inserted into the second hole 22, thereby limiting the rotation of the rotating base 10 relative to the rotating block 20, and improving the reliability of the device.

The device provided by the embodiment has the following advantages:

(1) through set up elastic component 30 between rotating seat 10 and turning block 20, make the boss 21 looks butt of the free section 32 of elastic component 30 and turning block 20, under the effect of the elastic force of the free section 32 of elastic component 30, the first hole 13 of rotating seat 10 can be aligned with the second hole 22 of turning block 20, guarantee that pin 50 can pass first hole 13 and insert in the second hole 22 smoothly, can promote the reliability of clutch to promote the success rate of unblanking of tool to lock.

(2) When the control mechanism of the lock does not send an unlocking electronic signal, the rotating seat 10 can rotate relative to the rotating block 20, and in the process that the rotating seat 10 rotates relative to the rotating block 20, the boss 21 can enable the free section 32 of the elastic piece 30 to move outwards, and the free section 32 cannot generate overlarge elastic force on the boss 21, so that the condition that the rotating block 20 is linked with the rotating seat 10 to cause mistaken unlocking can be ensured.

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 example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. 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, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

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 (10)

1. A clutch, characterized in that the clutch comprises:

the rotating seat (10), the rotating seat (10) is provided with a first limiting structure;

the rotating block (20) is connected with the rotating seat (10), the rotating block (20) is provided with a second limiting structure, the rotating seat (10) can rotate relative to the rotating block (20), and the rotating seat (10) has an initial state and a rotating state relative to the rotating block (20);

the elastic piece (30) is arranged between the rotating seat (10) and the rotating block (20), the elastic piece (30) is provided with a fixed section (31) and a free section (32) which are arranged oppositely, the fixed section (31) of the elastic piece (30) is fixedly connected with one of the rotating seat (10) and the rotating block (20), the free section (32) of the elastic piece (30) is abutted to the other one of the rotating seat (10) and the rotating block (20), and when the rotating seat (10) is located in an initial state, the elastic piece (30) is used for enabling the first limiting structure and the second limiting structure to be aligned so as to limit the rotating seat (10) and the rotating block (20) to rotate relatively through the matching of the first limiting structure and the second limiting structure.

2. The clutch according to claim 1, characterized in that the rotating seat (10) has a mounting hole (11), the rotating block (20) is partially disposed in the mounting hole (11), the fixed section (31) of the elastic member (30) is fixedly connected with the rotating seat (10), the rotating seat (10) has an avoiding hole (12), and the free section (32) of the elastic member (30) passes through the avoiding hole (12) and abuts against the rotating block (20).

3. The clutch according to claim 2, characterized in that the free section (32) of the elastic member (30) has an inner concave section (321) and a bent section (322) sequentially arranged along the extending direction, the inner concave section (321) is arranged in the avoiding hole (12) and abuts against the rotating block (20), the bent section (322) is located outside the rotating seat (10), and the bent section (322) is matched with the outer wall of the rotating seat (10) to limit the relative position of the free section (32) and the rotating seat (10).

4. The clutch according to claim 2, characterized in that an avoiding groove (111) is formed in the inner wall of the mounting hole (11), a boss (21) is formed in the outer wall of the rotating block (20), the boss (21) is located in the avoiding groove (111), and the boss (21) is matched with the groove wall of the avoiding groove (111) to limit the rotation range of the rotating seat (10) relative to the rotating block (20).

5. Clutch according to claim 4, wherein the boss (21) abuts against a free section (32) of the elastic element (30), the avoiding groove (111) having a first end and a second end arranged circumferentially, the first and second limit formations being aligned when the boss (21) abuts against a groove wall of the first end of the avoiding groove (111).

6. Clutch according to claim 1, further comprising a pressure piece (40), wherein the spring (30) is arranged between the rotating seat (10) and the pressure piece (40), and wherein the pressure piece (40) is used for fixing the spring (30).

7. The clutch according to claim 1, characterized in that a first hole (13) is provided in the rotatable seat (10), a second hole (22) is provided in the rotatable block (20), the first hole (13) forms the first limit structure, the second hole (22) forms the second limit structure, and the clutch further comprises a pin (50), wherein the pin (50) is movably disposed in the first hole (13) and the second hole (22), and the pin (50) is engaged with the first hole (13) and the second hole (22) to limit the rotation of the rotatable seat (10) relative to the rotatable block (20).

8. The clutch of claim 7, further comprising:

the limiting piece (60) is arranged between the pin (50) and the rotating seat (10), and the limiting piece (60) is used for limiting the position of the pin (50) in the first hole (13);

the return spring (70) is arranged between the pin (50) and the rotating seat (10), and the return spring (70) is used for returning the pin (50).

9. A lock, characterized in that it comprises:

a panel;

the handle is arranged on the panel and can rotate relative to the panel;

the resetting mechanism is positioned on one side of the panel, which is far away from the handle, and is used for resetting the handle;

a clutch according to any one of claims 1 to 8, the rotatable seat (10) of which is in driving connection with the handle;

the lock body is positioned on one side of the panel, which is far away from the handle, and the lock body is in driving connection with a rotating block (20) of the clutch.

10. The lock according to claim 9, characterized in that it further comprises a driving mechanism (80), said driving mechanism (80) being provided on said panel, said driving mechanism (80) being in driving connection with said pin (50) of the clutch, said driving mechanism (80) being adapted to drive said pin (50) to move in said first hole (13) of the rotatable seat (10) and in said second hole (22) of the rotatable block (20).

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