Lock

Abstract

A lock, comprising a lock body (1), a lock latch (2), a control assembly (5) and a brake shaft assembly. The brake shaft assembly comprises a rack (7), a sleeve (9), a moving shaft (8) and a brake ring (10), wherein the moving shaft (8) is arranged in the sleeve (9) and can slide relative to the sleeve (9); one end of the moving shaft (8) cooperates with the lock latch (2), and the other end of the moving shaft (8) cooperates with the brake ring (10); the brake ring (10) is limited in the sleeve (9) in the axial direction of the moving shaft (8); and a first reset spring (102) is connected between the moving shaft (8) and the brake ring (10), the first reset spring (102) being configured to enable the moving shaft (8) to extend out of the sleeve (9). The brake ring (10) is fixedly connected to a ring gear (84), and the ring gear (84) is engaged with the rack (7); the rack (7) can slide along the lock body (1) when pushed by a core shaft of the control assembly (5), and a second reset spring (71) is provided between the rack (7) and the lock body (1), the second reset spring (71) being used for driving the rack (7) to reset after the pushing force of the core shaft disappears; sliding of the rack (7) along the lock body (1) can drive the brake ring (10) to rotate.

Description

Lock

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] The present application claims priority to the Chinese patent application No. 202422245233.X filed on September 12, 2024, and titled "Lock", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure belongs to the technical field of door locks, and particularly relates to a lock. BACKGROUND

[0004] The lock is mainly used for being installed on a door frame, and the door is locked by a lock tongue on a door body being inserted into a notch of the lock. The lock comprises a lock body, a lock catch, a brake shaft assembly and a control assembly, etc. The lock catch is sleeved on a main shaft and can rotate around the main shaft. The brake shaft assembly cooperates with the lock catch so as to enable the lock catch to rotate around the main shaft or to make the lock catch unable to rotate around the main shaft. Whether the brake shaft assembly can give way to the lock catch depends on the control assembly. The control assembly comprises a solenoid and a mandrel. The mandrel moves when the solenoid is powered on, and the mandrel resets when the solenoid is powered off.

[0005] In the prior art, the transmission between the brake shaft assembly and the mandrel is not stable, and the brake shaft assembly is prone to damage under long-time use of the lock.

[0006] CONTENT OF THE UTILITY MODEL

[0007] In order to solve all or part of the above problems, the present disclosure aims to provide a lock. The lock of the present disclosure adopts a gear and rack transmission mechanism, so that the transmission between the moving shaft and the brake ring is more stable.

[0008] According to one aspect of the present disclosure, a lock is provided, comprising a lock body, a lock catch, a control assembly and a brake shaft assembly. The brake shaft assembly comprises a rack, a sleeve, a moving shaft and a brake ring. The moving shaft is arranged in the sleeve and can slide relative to the sleeve. One end of the moving shaft cooperates with the lock catch, and the other end of the moving shaft cooperates with the brake ring. The brake ring is limited in the sleeve along the axis direction of the moving shaft. A first return spring is connected between the moving shaft and the brake ring. The first return spring is configured to make the moving shaft extend out of the sleeve to block the rotating direction of the lock catch.

[0009] The brake ring is fixedly connected with a gear ring, and the gear ring is meshingly connected with the rack. The rack can slide along the lock body under the pushing of the mandrel of the control assembly. A second return spring is arranged between the rack and the lock body. The second return spring is used to reset the rack after the pushing force of the mandrel disappears. The sliding of the rack along the lock body can drive the brake ring to rotate. The rotation of the brake ring can change the state of the moving shaft. The moving shaft has a first state that can be accommodated in the sleeve to give way to the rotation of the lock catch, and a second state that cannot be accommodated in the sleeve.

[0010] Further, one end of the moving shaft is matched with the lock catch through a push rod, the push rod is slidingly connected with the lock body, the end of the moving shaft close to the push rod is a conical surface, one end of the push rod is a first matching slope matched with the conical surface, and the first return spring is configured to make the conical surface of the moving shaft contact the first matching slope.

[0011] The other end of the push rod is provided with a second matching slope matched with a lock catch slope on the lock catch, a third return spring is arranged between the push rod and the lock body, and the third return spring is configured to make the second matching slope adhere to the lock catch slope.

[0012] Further, the other end of the moving shaft is fixedly connected with a plurality of first clamping blocks, a first clamping groove is formed between adjacent two first clamping blocks, the brake ring is fixedly connected with a plurality of second clamping blocks, a second clamping groove is formed between adjacent two second clamping blocks, each first clamping block can be matched with a corresponding second clamping groove, and each second clamping block can be matched with a corresponding first clamping groove.

[0013] Further, each first clamping block is provided with a first slope on both sides close to the first clamping groove, each second clamping block is provided with a second slope on both sides close to the second clamping groove, the second slope is matched with the first slope, and the two second slopes on each second clamping block intersect.

[0014] Further, the sleeve includes a barrel and an end cover, the barrel is fixedly connected with the end cover, the brake ring is limited in the barrel by the first return spring and the end cover, and a gap groove is arranged on the end cover to allow the gear ring to rotate.

[0015] Further, the moving shaft is fixedly connected with a connecting pin, two sliding grooves are arranged on the barrel and extend along the axis direction of the moving shaft, and the two ends of the connecting pin extend into the corresponding sliding grooves.

[0016] Further, a circle of balls is arranged between the brake ring and the end cover.

[0017] Further, the rack is matched with the shaft of the control assembly through a connecting rod, the rack is fixed on the connecting rod, the connecting rod is slidingly connected with the lock body, and the end of the connecting rod close to the shaft of the control assembly is provided with a first matching part matched with the shaft.

[0018] Further, a first micro switch is fixedly arranged in the lock body, a second matching part is arranged on the connecting rod, and the second matching part is matched with the action spring leaf of the first micro switch.

[0019] Further, the door state part is fixedly connected with a connecting rod, a fourth return spring is arranged between the connecting rod and the lock body, one end of the connecting rod is provided with a third matching part, and the third matching part is matched with the action spring leaf of the second micro switch.

[0020] From the above technical solutions, the lock provided by the present disclosure has the following beneficial effects:

[0021] The present disclosure adopts a gear and rack transmission mechanism to make the transmission between the moving shaft and the brake ring more stable, and further make the transmission between the mandrel and the brake ring assembly more stable; the cooperation of the first inclined surface and the second inclined surface of the present disclosure makes the movement of the moving shaft and the rotation of the brake ring smooth and undamped during the unlocking process, solving the problem of inability to unlock due to the jamming of the slider or the brake shaft in the prior art.

[0022] SUMMARY

[0023] Fig. 1 is a schematic diagram of a lock according to an embodiment of the present disclosure;

[0024] Fig. 2 is a structural schematic diagram of the brake shaft assembly, the lock catch and the door state part according to an embodiment of the present disclosure;

[0025] Fig. 3 is a schematic diagram of the rack and pinion part according to the present disclosure;

[0026] Fig. 4 is a front view of the sleeve part according to an embodiment of the present disclosure;

[0027] Fig. 5 is a sectional view along the A-A direction in Fig. 4;

[0028] Fig. 6 is a schematic diagram of the moving shaft and the brake ring part;

[0029] In the drawings, the reference signs are as follows: lock body 1, lock catch 2, lock catch inclined surface 21, door state part 3, push rod 4, first matching inclined surface 41, third return spring 42, control assembly 5, connecting rod 6, first matching part 61, rack 7, second return spring 71, moving shaft 8, conical surface 81, first clamping block 82, first inclined surface 821, connecting pin 83, pinion 84, sleeve 9, end cover 91, barrel 92, sliding groove 921, brake ring 10, second clamping block 101, second inclined surface 1011, first return spring 102, and ball 11.

[0030] Preferred embodiments of the present disclosure

[0031] In order to better understand the purpose, structure and function of the present disclosure, a lock according to the present disclosure is described in further detail below in combination with the drawings.

[0032] As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4 and FIG. 5, which show a lock according to an embodiment of the present disclosure, comprising a lock body 1, a lock catch 2, a control assembly 5 and a brake shaft assembly, the brake shaft assembly comprising a rack 7, a sleeve 9, a moving shaft 8 and a brake ring 10, the moving shaft 8 is arranged in the sleeve 9 and can slide relative to the sleeve 9, one end of the moving shaft 8 is matched with the lock catch 2, the other end of the moving shaft 8 is matched with the brake ring 10, the brake ring 10 is limited in the sleeve 9 along the axis direction of the moving shaft 8, a first return spring 102 is connected between the moving shaft 8 and the brake ring 10, the first return spring 102 is configured to make the moving shaft 8 extend out of the sleeve 9 to block the rotating direction of the lock catch 2.

[0033] The brake ring 10 is fixedly connected with a gear ring 84, the gear ring 84 is meshingly connected with the rack 7, the rack 7 can slide along the lock body 1 under the pushing of the control assembly 5, a second return spring 71 is arranged between the rack 7 and the lock body 1, the second return spring 71 is used to reset the rack 7 after the pushing force of the control assembly 5 disappears, the rack 7 sliding along the lock body 1 can drive the brake ring 10 to rotate, the brake ring 10 rotating can change the state of the moving shaft 8, the moving shaft 8 has a first state that can be accommodated in the sleeve 9 to give way to the rotation of the lock catch 2, and a second state that cannot be accommodated in the sleeve 9.

[0034] Specifically, the lock according to the embodiment comprises the lock body 1, the lock catch 2, the control assembly 5 and the brake shaft assembly, wherein the lock catch 2 is arranged on the lock catch 2 rotating shaft, and the lock catch 2 can rotate around the lock catch 2 rotating shaft, the lock catch 2 is matched with one end of the moving shaft 8, whether the lock catch 2 can rotate depends on the moving shaft 8, along the rotating direction of the lock catch 2 when unlocking, the moving shaft 8 is located in front of the rotating direction, the lock catch 2 is located behind the rotating direction, therefore when the lock catch 2 has a tendency to rotate under the action force of the lock tongue, the lock catch 2 will generate a corresponding action force on the moving shaft 8. Whether the lock catch 2 can rotate under the action force to push away the moving shaft 8 depends on the state of the moving shaft 8, when the moving shaft 8 is in the first state, the moving shaft 8 can give way to the lock catch 2, the lock catch 2 can push away the moving shaft 8; when the moving shaft 8 is in the second state, the moving shaft 8 cannot give way to the lock catch 2, the lock catch 2 cannot push away the moving shaft 8.

[0035] The control assembly 5 can make the brake ring 10 rotate through the meshing of the gear ring 84 and the rack 7, the brake ring 10 is matched with the moving shaft 8, the state of the moving shaft 8 changes when the brake ring 10 rotates. For example, when the solenoid of the control assembly 5 is not powered, the moving shaft 8 is in the first state, at this time the lock catch 2 can rotate, the door lock can be opened, when the solenoid is powered, the moving shaft 8 moves to drive the rack 7 to move, the rack 7 moving makes the gear ring 84 rotate, the gear ring 84 rotating makes the brake ring 10 rotate, the brake ring 10 rotating makes the moving shaft 8 cannot be accommodated in the sleeve 9, that is, the moving shaft 8 cannot give way to the lock catch 2, at this time the lock catch 2 cannot rotate, the door lock cannot be opened, that is, the power-on lock door is realized.

[0036] Again, the brake ring 10 is limited in the axial direction of the moving shaft 8 in the sleeve 9, that is, the brake ring 10 cannot move in the axial direction of the moving shaft 8, and the first return spring 102 is arranged between the brake ring 10 and the moving shaft 8, so that the end of the moving shaft 8 can be arranged to protrude out of the sleeve 9 and cooperate with the lock catch 2 by reasonably arranging the first return spring 102, that is, the end of the moving shaft 8 can be arranged to block in front of the lock catch 2 in the rotating direction by reasonably arranging the first return spring 102.

[0037] Further, the control assembly 5 is further connected with the shaft reset spring, so that the shaft can be reset when the magnetic field generated by the solenoid of the control assembly 5 disappears. In the embodiment, the second reset spring 71 is arranged between the rack 7 and the lock body 1, and the second reset spring 71 is used to reset the rack 7 when the pushing force of the shaft disappears, and the state of the moving shaft 8 changes again. Taking the power-on lock door as an example: before power-on, the moving shaft 8 is in the first state, and the door lock can be opened; after power-on, the moving shaft 8 is in the second state, and the door lock cannot be opened; after power-off again, the moving shaft 8 is reset to the first state, and the door lock is reset to the state that can be opened.

[0038] The embodiment adopts the gear and rack 7 transmission mechanism, so that the transmission between the moving shaft 8 and the brake ring 10 is more stable; the rack 7 moves to drive the gear ring 84 to rotate, so that the state of the moving shaft 8 changes, and the state of the lock changes. The embodiment will not appear the situation that the state of the lock cannot change after the solenoid is powered on in the prior art.

[0039] Finally, the embodiment adopts the gear and rack 7 transmission mechanism, so that the adjustment of the lock in the unlocking state or the locking state when the lock is powered off is more convenient, which can be achieved by engaging the different teeth on the rack 7 and the gear ring 84.

[0040] In an embodiment, as shown in FIG. 2, one end of the moving shaft 8 cooperates with the lock catch 2 through the push rod 4, the push rod 4 is in sliding connection with the lock body 1, the end of the moving shaft 8 close to the push rod 4 is a conical surface 81, one end of the push rod 4 is a first matching inclined surface 41 matched with the conical surface 81, and the first return spring 102 is arranged to make the conical surface 81 of the moving shaft 8 contact the first matching inclined surface 41; the other end of the push rod 4 is provided with a second matching inclined surface matched with the lock catch inclined surface 21 on the lock catch 2, and the third return spring 42 is arranged between the push rod 4 and the lock body 1, and the third return spring 42 is arranged to make the second matching inclined surface stick to the lock catch inclined surface 21.

[0041] In this embodiment, the moving shaft 8 cooperates with the push rod 4 through the conical surface 81 and the first matching inclined surface 41, and the first reset spring 102 between the moving shaft 8 and the brake ring 10 is configured to make the conical surface 81 of the moving shaft 8 contact the first matching inclined surface 41; the push rod 4 cooperates with the lock catch 2 through the second matching inclined surface and the lock catch inclined surface 21. Therefore, when the lock catch 2 is subjected to the force of the lock tongue and tends to rotate, the lock catch inclined surface 21 of the lock catch 2 will generate a force on the second matching inclined surface of the push rod 4, and the push rod 4 will generate a force on the conical surface 81 of the moving shaft 8 through the first matching inclined surface 41, and whether the lock catch 2 can rotate depends on the state of the moving shaft 8.

[0042] Again, when the lock catch 2 can rotate, the lock catch 2 will push the push rod 4 to move, and the push rod 4 will push the moving shaft 8 to be accommodated in the sleeve 9; after the force of the lock tongue on the lock catch 2 disappears, the lock catch 2 is reset under the action of the reset spring of the lock catch 2, the force between the lock catch 2 and the push rod 4 disappears, and the push rod 4 is reset to the second matching inclined surface in contact with the lock catch inclined surface 21 under the action of the third reset spring 42, and the moving shaft 8 is reset to the conical surface 81 in contact with the first matching inclined surface 41.

[0043] In an embodiment, as shown in FIG. 5, the other end of the moving shaft 8 is fixedly connected with a plurality of first clamping blocks 82, and a first clamping groove is formed between adjacent two first clamping blocks 82; the brake ring 10 is fixedly connected with a plurality of second clamping blocks 101, and a second clamping groove is formed between adjacent two second clamping blocks 101, each first clamping block 82 can cooperate with the corresponding second clamping groove, and each second clamping block 101 can cooperate with the corresponding first clamping groove.

[0044] In this embodiment, the first clamping block 82 is arranged on the moving shaft 8 close to one end of the brake ring 10, the second clamping block 101 is arranged on the brake ring 10 close to one end of the moving shaft 8, the first clamping block 82 cooperates with the second clamping groove, and the second clamping block 101 cooperates with the first clamping groove. Therefore, the moving shaft 8 can be accommodated in the sleeve 9, specifically, the first clamping block 82 can extend into the second clamping groove, and the second clamping block 101 can extend into the first clamping groove; the moving shaft 8 cannot be accommodated in the sleeve 9, specifically, the first clamping block 82 cannot extend into the second clamping groove, and the second clamping block 101 cannot extend into the first clamping groove. Whether the moving shaft 8 can be accommodated in the sleeve 9 can be realized by rotating the gear ring 84 and the brake ring 10 through the rack 7.

[0045] In an embodiment, as shown in FIG. 6, each first clamping block 82 is provided with a first inclined surface 821 close to both sides of the first clamping groove, each second clamping block 101 is provided with a second inclined surface 1011 close to both sides of the second clamping groove, the second inclined surface 1011 cooperates with the first inclined surface 821, and the two second inclined surfaces 1011 on each second clamping block 101 intersect.

[0046] Specifically, the first inclined surface 821 and the second inclined surface 1011 of the present embodiment reduce the friction between the first clamping block 82 and the second clamping block 101 when the moving shaft 8 moves towards the brake ring 10. Specifically, taking the case that the moving shaft 8 is in the second state when power is off as an example, at this time, the moving shaft 8 cannot move towards the brake ring 10, when the lock catch 2 rotates after being unlocked, the push rod 4 is pushed by the lock catch 2, the push rod 4 moves to push the moving shaft 8, and the brake ring 10 rotates, so that the first inclined surface 821 of the moving shaft 8 slides along the second inclined surface 1011 of the brake ring 10 and enters the second clamping slot of the brake ring 10, and thus the cooperation of the first inclined surface 821 and the second inclined surface 1011 of the present embodiment makes the movement of the moving shaft 8 and the rotation of the brake ring 10 smooth and undamped during the unlocking process, and solves the problem that the door cannot be unlocked due to the jamming of the sliding block or the brake shaft in the prior art.

[0047] In an embodiment, as shown in FIGS. 4-5, the sleeve 9 includes a barrel 92 and an end cover 91, the barrel 92 is fixedly connected with the end cover 91, the brake ring 10 is limited in the barrel 92 by the first return spring 102 and the end cover 91, and the end cover 91 is provided with a slot for the rotation of the gear ring 84.

[0048] Specifically, the sleeve 9 of the present embodiment includes a barrel 92 and an end cover 91, and the barrel 92 is fixedly connected with the end cover 91 by screws. The brake ring 10 of the present embodiment is limited in the barrel 92 by the first return spring 102 and the end cover 91. Since the brake ring 10 is located in the space between the barrel 92 and the end cover 91, the present embodiment is provided with a slot on the end cover 91 for the rotation of the gear ring 84.

[0049] In an embodiment, as shown in FIG. 5, the moving shaft 8 is fixedly connected with a connecting pin 83, and the barrel 92 is provided with two sliding grooves 921, both of which extend along the axis direction of the moving shaft 8, and both ends of the connecting pin 83 extend into the corresponding sliding grooves 921.

[0050] The arrangement of the connecting pin 83 and the sliding grooves 921 of the present embodiment makes the moving shaft 8 only move along its axis direction, thereby overcoming the situation that the door lock cannot be normally opened due to the rotation of the moving shaft 8.

[0051] In an embodiment, a circle of balls 11 is arranged between the brake ring 10 and the end cover 91. The arrangement of the balls 11 of the present embodiment reduces the friction between the brake ring 10 and the end cover 91 during the rotation of the brake ring 10.

[0052] In an embodiment, as shown in FIG. 2, the rack 7 cooperates with the mandrel of the control assembly 5 through the connecting rod 6, the rack 7 is fixed on the connecting rod 6, the connecting rod 6 is slidingly connected with the lock body 1, and the connecting rod 6 is provided with a first matching part 61 matched with the mandrel at the end close to the mandrel of the control assembly 5.

[0053] The rack 7 is fixed on the connecting rod 6, and the connecting rod 6 is matched with the mandrel of the control assembly 5 through the first matching part 61 on the connecting rod 6. Specifically, when the mandrel of the control assembly 5 is extended, the mandrel pushes the first matching part 61, and the first matching part 61 moves to drive the rack 7 to move.

[0054] In an embodiment, a first micro switch is fixed in the lock body 1, and a second matching part is arranged on the connecting rod 6 and matched with the action spring of the first micro switch.

[0055] The first micro switch in the embodiment is matched with the connecting rod 6, so that the state of the connecting rod 6 can be known in time. Taking the movement of the connecting rod 6 after power-on as an example, the action spring of the corresponding first micro switch is closed after the movement of the connecting rod 6 after power-on, and the first micro switch outputs a corresponding signal; therefore, whether the connecting rod 6 moves or not can be judged according to whether the corresponding signal can be received after power-on, so that it can be used for troubleshooting.

[0056] In an embodiment, as shown in FIG. 2, the lock also comprises a door piece 3 and a second micro switch, the door piece 3 is fixedly connected with a connecting rod, a fourth reset spring is arranged between the connecting rod and the lock body 1, and a third matching part is arranged on one end of the connecting rod and matched with the action spring of the second micro switch.

[0057] The second micro switch in the embodiment is matched with the door piece 3 and the connecting rod, and is used for outputting the state of the door lock, for example, whether the bolt is located in the notch of the lock.

[0058] The lock in the embodiment has a simple structure and small volume, so that the lock in the embodiment can be used in a larger range; the lock in the embodiment has a large pre-pressure, and can continue to be opened when the door lock is subjected to external force.

[0059] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be the general meanings understood by the persons skilled in the art to which the present disclosure belongs.

[0060] In addition, the terms “one”, “two” and the like are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the present disclosure, the meaning of “a plurality of” is two or more, unless otherwise specifically and specifically limited.

[0061] In this application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in this disclosure can be understood according to the specific circumstances.

[0062] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present disclosure, and not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure, and they should be covered in the scope of the claims and the specification of the present disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A lock comprising a lock body, a lock catch, a control assembly and a deadbolt assembly, characterised in that, The brake shaft assembly comprises a rack, a sleeve, a moving shaft and a brake ring, the moving shaft is arranged in the sleeve and can slide relative to the sleeve, one end of the moving shaft is matched with the lock catch, the other end of the moving shaft is matched with the brake ring, the brake ring is limited in the sleeve along the axis direction of the moving shaft, a first reset spring is connected between the moving shaft and the brake ring, and the first reset spring is configured to make the moving shaft extend out of the sleeve to block the rotating direction of the lock catch; The brake ring is fixedly connected with a gear ring, the gear ring is meshed with the rack, the rack can slide along the lock body under the pushing of the control assembly, a second reset spring is arranged between the rack and the lock body, the second reset spring is used for resetting the rack after the pushing force of the core shaft disappears, the rack sliding along the lock body can drive the brake ring to rotate, the brake ring rotating can change the state of the moving shaft, and the moving shaft has a first state of being capable of being accommodated in the sleeve to give way to the rotation of the lock catch and a second state of being incapable of being accommodated in the sleeve.

2. The lock of claim 1, wherein One end of the moving shaft is matched with the lock catch through a push rod, the push rod is slidingly connected with the lock body, one end of the moving shaft close to the push rod is a conical surface, one end of the push rod is a first matching inclined surface matched with the conical surface, and the first reset spring is configured to make the conical surface of the moving shaft contact the first matching inclined surface. The other end of the push rod is provided with a second matching inclined surface matched with a lock catch inclined surface on the lock catch, a third reset spring is arranged between the push rod and the lock body, and the third reset spring is configured to make the second matching inclined surface adhere to the lock catch inclined surface.

3. The lock of claim 1, wherein The other end of the moving shaft is fixedly connected with a plurality of first clamping blocks, and a first clamping groove is formed between adjacent two first clamping blocks; the brake ring is fixedly connected with a plurality of second clamping blocks, and a second clamping groove is formed between adjacent two second clamping blocks, each first clamping block can be matched with a corresponding second clamping groove, and each second clamping block can be matched with a corresponding first clamping groove.

4. The lock of claim 3, wherein First inclined surfaces are arranged on both sides of each first clamping block close to the first clamping groove, second inclined surfaces are arranged on both sides of each second clamping block close to the second clamping groove, the second inclined surfaces are matched with the first inclined surfaces, and two second inclined surfaces on each second clamping block intersect.

5. The lock of claim 1, wherein, The sleeve comprises a barrel and an end cover, the barrel is fixedly connected with the end cover, the brake ring is limited in the barrel by the first reset spring and the end cover, and a giving-way groove for the rotation of the gear ring is formed in the end cover.

6. The lock of claim 5, wherein, The moving shaft is fixedly connected with a connecting pin, two sliding grooves are formed in the barrel, both the sliding grooves extend along the axis direction of the moving shaft, and both ends of the connecting pin extend into the corresponding sliding grooves.

7. The lock of claim 5, wherein, A circle of balls is arranged between the brake ring and the end cover.

8. The lock of claim 1, wherein, The rack is matched with the core shaft of the control assembly through a connecting rod, the rack is fixed on the connecting rod, the connecting rod is in sliding connection with the lock body, and one end of the connecting rod close to the core shaft of the control assembly is provided with a first matching part matched with the core shaft.

9. The lock of claim 8, wherein, The lock body is internally fixed with a first micro switch, the connecting rod is provided with a second matching part, and the second matching part is matched with an action spring sheet of the first micro switch.

10. The lock of any of claims 1-9, wherein, Further comprising a door state piece and a second micro switch, the door state piece is fixedly connected with a connecting rod, a fourth reset spring is arranged between the connecting rod and the lock body, one end of the connecting rod is provided with a third matching part, and the third matching part is matched with an action spring sheet of the second micro switch.

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