Clutch assembly and door lock

Abstract

The utility model discloses a kind of clutch assembly and door lock, first clutch piece is movably arranged in base along front-back direction;Clutch driving part is rotationally arranged in base and rotation axis is arranged along front-back direction, clutch driving part is located the rear side of first clutch piece, clutch driving part has initial angular position and push angle position, when clutch driving part rotates from initial angular position to push angle position, clutch driving part drives first clutch piece to move forward;When clutch driving part rotates from push angle position to initial angular position, first clutch piece can move backward;Driver is arranged in base and is used to drive clutch driving part to rotate;Elastic reset piece is arranged in base and can exert the force that makes first clutch piece move backward;Wherein limit structure is arranged between base and clutch driving part, limit structure is used to limit the rotation of clutch driving part relative to base between initial angular position and push angle position.

Description

Technical Field

[0001] This utility model relates to locks, and more particularly to a clutch assembly and a door lock. Background Technology

[0002] Some existing door locks include a handle, a transmission rod, and a clutch assembly. The transmission rod is connected to the lock cylinder's dial, and the clutch assembly can lock the transmission rod relative to the handle, allowing the user to unlock the lock cylinder by turning the handle using the transmission rod. When the clutch assembly unlocks the transmission rod, the handle can spin freely and cannot unlock the lock.

[0003] Existing clutch assemblies include a base, a first clutch element, a clutch drive element, a driver, and a resilient reset element. The driver can rotate the clutch drive element to a pushing angle position, causing the first clutch element to move forward and compress the resilient reset element to lock the position of the transmission rod relative to the handle. When the clutch drive element returns to its initial angle position, the resilient reset element can drive the first clutch element to move backward. In current clutch assemblies, when the driver drives the clutch drive element to rotate, the clutch drive element is prone to over-rotation, making it difficult for the first clutch element to remain extended or retracted, affecting the stability of the clutch assembly. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a clutch assembly that can reduce the risk of excessive rotation of the clutch drive component and offers high stability in use.

[0005] This utility model also proposes a door lock having the above-mentioned clutch component.

[0006] A clutch assembly according to a first aspect of the present invention includes a base, a first clutch member, a clutch drive member, a driver, and a resilient reset member. The first clutch member is movably disposed on the base in a front-rear direction; the clutch drive member is rotatably disposed on the base with its rotation axis arranged in the front-rear direction, the clutch drive member being located behind the first clutch member, the clutch drive member having an initial angular position and a pushing angular position; when the clutch drive member rotates from the initial angular position to the pushing angular position, the clutch drive member drives the first clutch member to move forward; when the clutch drive member rotates from the pushing angular position to the initial angular position, the first clutch member can move backward; the driver is disposed on the base and is used to drive the clutch drive member to rotate; the resilient reset member is disposed on the base and can apply a force to move the first clutch member backward; wherein a limiting structure is provided between the base and the clutch drive member, the limiting structure being used to limit the rotation of the clutch drive member relative to the base between the initial angular position and the pushing angular position.

[0007] The clutch assembly according to the first aspect of the present invention has at least the following beneficial effects: by setting a limiting structure between the base and the clutch drive member, the rotation range of the clutch drive member is limited. When the driver drives the clutch drive member to rotate, the clutch drive member can only rotate between the initial angle position and the push angle position. When the clutch drive member rotates to the initial angle position, the first clutch member can move backward into place; when the clutch drive member rotates to the push angle position, the first clutch member can move forward into place, thereby avoiding the situation where the clutch drive member rotates excessively and the first clutch member does not move into place, thus improving the stability of the clutch assembly in use.

[0008] According to some embodiments of the present invention, the limiting structure includes a limiting block and two limiting stops. The two limiting stops are arranged at intervals around the rotation axis of the clutch drive and disposed on the clutch drive. The limiting block is disposed on the base and is located between the two limiting stops and can move between the two limiting stops.

[0009] According to some embodiments of the present invention, the limiting structure includes a limiting groove, the limiting groove is arc-shaped and arranged around the rotation axis of the clutch drive member, the two ends of the limiting groove form the limiting stop portion, and the limiting block is located in the limiting groove.

[0010] According to some embodiments of the present invention, a first boss is provided on the rear side of the first clutch member, and a second boss is provided on the front side of the clutch drive member. At the initial angle position, the first boss and the second boss are offset around the rotation axis of the clutch drive member; at the pushing angle position, the first boss and the second boss are opposite each other.

[0011] According to some embodiments of the present invention, the first boss and the second boss have the same protrusion height.

[0012] According to some embodiments of the present invention, the first clutch component is provided with a first magnet, and the clutch drive component is provided with a second magnet. At the initial angle position, the first magnet and the second magnet are offset around the rotation axis of the clutch drive component; at the pushing angle position, the first magnet and the second magnet are opposite to each other and repel each other.

[0013] According to some embodiments of the present invention, the driver is configured as a motor, the motor has an output shaft arranged in the front-rear direction, the output shaft passes through the clutch drive member, the clutch drive member is connected to the output shaft and the two rotate synchronously, the first clutch member has a clearance hole arranged in the front-rear direction, the output shaft is inserted into the clearance hole, and there is a gap between the output shaft and the hole wall of the clearance hole.

[0014] A door lock according to a second aspect embodiment of the present invention includes a handle, a transmission rod, and the aforementioned clutch assembly. The transmission rod is rotatably disposed on the handle with its rotation axis arranged along its length, and the transmission rod is used to drive the main lock cylinder. The clutch assembly is disposed on the handle, and when the first clutch member of the clutch assembly moves forward, it locks the position of the transmission rod relative to the handle, and when the first clutch member of the clutch assembly moves backward, it unlocks the position of the transmission rod relative to the handle.

[0015] The door lock according to the second aspect of the present invention has at least the following beneficial effects: due to the use of the above-mentioned clutch component, the door lock unlocking process is more stable and reliable, reducing the risk of accidental failure to unlock.

[0016] According to some embodiments of the present invention, the transmission rod is arranged in the front-to-back direction, the cross-section of the transmission rod is polygonal, and the door lock further includes a second clutch. The second clutch is movably arranged in the left-to-right direction on the handle and can approach or move away from the transmission rod. When the first clutch moves forward, the second clutch is driven to approach and press against the transmission rod through the inclined top structure. When the first clutch moves backward, the second clutch releases the transmission rod.

[0017] According to some embodiments of this utility model, the handle is provided with a spare lock cylinder, the spare lock cylinder is rotatably provided with a dial, the dial is opposite to the first clutch, and when the dial is rotated, it can push the first clutch to move forward.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a perspective view of a door lock according to an embodiment of the present utility model;

[0021] Figure 2 This is an embodiment of the present utility model. Figure 1A cross-sectional view along the AA direction;

[0022] Figure 3 This is an embodiment of the present utility model. Figure 2 A magnified view of a portion of point B;

[0023] Figure 4 This is an exploded view of the clutch assembly according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the clutch drive component of the clutch assembly in the initial angular position according to an embodiment of the present utility model.

[0025] Figure 6 This is a schematic diagram of the clutch drive component of the clutch assembly in the pushing angle position according to an embodiment of the present utility model.

[0026] Figure 7 This is an exploded view of the first clutch component and the clutch drive component according to an embodiment of the present utility model;

[0027] Figure 8 This is an exploded view of the first clutch component and the clutch drive component according to an embodiment of the present utility model.

[0028] Figure label:

[0029] Base 100;

[0030] First clutch element 200, first boss 210, first magnet 220, clearance hole 230;

[0031] Clutch drive component 300, second boss 310, second magnet 320;

[0032] Driver 400, output shaft 410;

[0033] 500 elastic reset element;

[0034] Limiting structure 600, limiting block 610, limiting groove 620, limiting stop part 621;

[0035] Handle 700, spare lock cylinder 710, dial 711;

[0036] Transmission rod 800;

[0037] Second clutch component 900. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0039] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0041] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0042] Traditional clutch actuators can rotate 360°. By setting the drive's operating time, the clutch actuator can rotate to its initial or pushing angle position. However, unexpected factors in actual use can cause the clutch actuator to fail to rotate to its intended position.

[0043] Reference Figures 1 to 8This invention relates to a clutch assembly comprising a base 100, a first clutch member 200, a clutch drive member 300, a driver 400, and an elastic reset member 500. The first clutch member 200 is movably disposed on the base 100 in a front-rear direction. The clutch drive member 300 is rotatably disposed on the base 100 with its rotation axis in the front-rear direction. The clutch drive member 300 is located behind the first clutch member 200 and has an initial angle position and a pushing angle position. When the clutch drive member 300 rotates from the initial angle position to the pushing angle position, it drives the first clutch member 200 to move forward. When the clutch is rotated to the initial angle position, the first clutch 200 can move backward; the driver 400 is disposed on the base 100 and is used to drive the clutch drive 300 to rotate; the elastic reset member 500 is disposed on the base 100 and can apply a force to move the first clutch 200 backward; wherein a limit structure 600 is provided between the base 100 and the clutch drive 300, the limit structure 600 is used to limit the rotation of the clutch drive 300 relative to the base 100 between the initial angle position and the push angle position.

[0044] By setting a limiting structure 600 between the base 100 and the clutch drive 300, the rotation range of the clutch drive 300 is limited. When the driver 400 drives the clutch drive 300 to rotate, the clutch drive 300 can only rotate between the initial angle position and the push angle position. When the clutch drive 300 rotates to the initial angle position, the first clutch 200 can move backward into position; when the clutch drive 300 rotates to the push angle position, the first clutch 200 can move forward into position. This avoids the clutch drive 300 from rotating excessively, which would cause the first clutch 200 to not move into position, thus improving the stability of the clutch assembly.

[0045] Specifically, the base 100 has a guide hole along the front-to-back direction, the first clutch 200 slides through the guide hole, and the wall of the guide hole has a guide groove along the front-to-back direction. The first clutch 200 has a guide slider, which is slidably connected to the guide wire groove, so that the first clutch 200 can move back and forth relative to the base 100. It is conceivable that in some other embodiments, the first clutch 200 can also be moved back and forth relative to the base 100 by, for example, a guide post and guide sleeve structure.

[0046] In the embodiments, reference is made to Figure 6 and Figure 8The limiting structure 600 includes a limiting block 610 and two limiting stops 621. The two limiting stops 621 are arranged at intervals around the rotation axis of the clutch drive 300 and are disposed on the clutch drive 300. The limiting block 610 is disposed on the base 100 and is located between the two limiting stops 621 and can move between the two limiting stops 621. When the clutch drive 300 rotates to the point where the limit block 610 abuts against one of the limit stops 621, the clutch drive 300 rotates to the initial angle position. When the clutch drive 300 rotates to the point where the limit block 610 abuts against the other limit stop 621, the clutch drive 300 rotates to the push angle position. During the process of the driver 400 driving the clutch drive 300 to rotate, the clutch drive 300 will stop rotating as soon as it reaches the initial angle position or the push angle position, and will remain in the current position, thereby avoiding the situation of incomplete rotation. The structure is simple and easy to implement.

[0047] In the embodiments, reference is made to Figure 8 The limiting structure 600 includes a limiting groove 620, which is arc-shaped and arranged around the rotation axis of the clutch drive 300. Limiting stops 621 are formed at both ends of the limiting groove 620, and a limiting block 610 is located within the limiting groove 620. By setting the arc-shaped limiting groove 620 and forming limiting stops 621 at both ends, the limiting block 610 can move smoothly along the limiting groove 620. Furthermore, the limiting groove 620 can stop the limiting block 610 at both ends, thereby limiting the rotation range of the clutch drive 300. The specific structure of the limiting structure 600 is relatively simple and reliable.

[0048] It is conceivable that the two limiting stops 621 could also be two limiting protrusions. It is also conceivable that in other embodiments, the limiting structure 600 could be other structures. For example, the limiting structure 600 includes two limiting protrusions and a limiting mating block. Both limiting protrusions are connected to the base 100 and are spaced apart around the rotation axis of the clutch drive member 300. The limiting mating block protrudes from the clutch drive member 300 and is located between the two limiting protrusions, allowing the limiting mating block to move between the two limiting protrusions when the clutch drive member 300 rotates. The two limiting protrusions can limit the rotation range of the clutch drive frame through the limiting mating block.

[0049] In the embodiments, reference is made to Figure 6The first clutch component 200 has a first boss 210 on its rear side, and the clutch drive component 300 has a second boss 310 on its front side. In the initial angle position, the first boss 210 and the second boss 310 are offset around the rotation axis of the clutch drive component 300. In the pushing angle position, the first boss 210 and the second boss 310 are opposite each other. In the initial angle position, the offset of the first boss 210 and the second boss 310 allows the first clutch component 200 sufficient space to move backward and reset. In the pushing angle position, the first boss pushes the second boss, causing the first clutch component 200 to move forward. This method of driving the first clutch component 200 forward by having the bosses push against each other is simple in structure and easy to implement.

[0050] In the embodiments, reference is made to Figure 6 The first protrusion 210 and the second protrusion 310 have the same protrusion height, the structural layout between the first clutch 200 and the clutch drive 300 is more compact, and the first clutch 200 can move a larger range.

[0051] In the embodiments, reference is made to Figure 7 and Figure 8 The first clutch component 200 is equipped with a first magnet 220, and the clutch drive component 300 is equipped with a second magnet 320. In the initial angle position, the first magnet 220 and the second magnet 320 are offset around the rotation axis of the clutch drive component 300. In the push-off angle position, the first magnet 220 and the second magnet 320 are opposite each other and repel each other. By setting the first magnet 220 and the second magnet 320, when the clutch drive component 300 rotates to the push-off angle position, the first magnet 220 and the second magnet 320 repel each other, allowing the first clutch component 200 to move forward a greater distance under the action of the repulsive force, thus increasing the stroke of the first clutch component 200 to meet practical needs and improve the stability of the clutch assembly. Furthermore, when the clutch drive component 300 is in the push-off angle position, the repulsive force between the first magnet 220 and the second magnet 320 facilitates the subsequent rotation and reset of the clutch drive component 300 to the initial angle position, resulting in a better reset effect.

[0052] Specifically, the first magnet 220 is installed at the first boss 210, and the second magnet 320 is installed at the second boss 310.

[0053] Specifically, the first boss 210 and the second boss 310 of this application are relatively short. The first boss 210 and the second boss 310, along with the first magnet 220 and the second magnet 320, are used to meet the forward movement distance requirement of the first clutch 200. Optionally, in some embodiments, the first clutch 200 can move forward solely by the first boss 210 and the second boss 310 abutting and pushing against each other; or the first boss 210 and the second boss 310 can move forward solely by the first magnet 220 and the second magnet 320 repelling each other.

[0054] In the embodiments, reference is made to Figure 3 The driver 400 is configured as a motor, with an output shaft 410 arranged along the front-rear direction. The output shaft 410 passes through the clutch drive 300, which is connected to the output shaft 410 and rotates synchronously. The first clutch 200 has a clearance hole 230 arranged along the front-rear direction, and the output shaft 410 is inserted into the clearance hole 230, with a gap between the output shaft 410 and the wall of the clearance hole 230. Since the output shaft 410 of a conventional motor is relatively long, it passes through the clutch drive 300 and extends into the clearance hole 230 of the first clutch 200. This allows the clutch drive 300 to rotate via the motor without affecting the first clutch 200, and also allows the size of the clutch drive 300 and the first clutch 200 to be made smaller, resulting in a more compact and small clutch assembly structure, suitable for relatively precise door locks.

[0055] Specifically, the motor can rotate in both directions to drive the clutch drive unit 300 to switch back and forth between the initial angle position and the pushing angle position.

[0056] It is conceivable that in other embodiments, the driver 400 may also be other structures that output rotational power, which are not limited here.

[0057] Specifically, the clutch drive unit 300 is indirectly rotatably mounted on the base 100 via the motor output shaft 410. It is conceivable that the clutch drive unit 300 could also be directly pivotally connected to the base 100 and driven to rotate by the driver 400.

[0058] Specifically, the elastic reset member 500 is a spring, with one end abutting against the base 100 and the other end abutting against the first clutch member 200, applying a force to move the clutch member backward. It is conceivable that in other embodiments, the elastic reset member 500 could also be, for example, a spring sheet or a silicone block.

[0059] Reference Figure 1This utility model also discloses a door lock that uses the aforementioned clutch assembly, including a handle 700, a transmission rod 800, and a clutch assembly. The transmission rod 800 is rotatably mounted on the handle 700 with its rotation axis along its length, and is used to drive the main lock cylinder. The clutch assembly is mounted on the handle 700. When the first clutch member 200 of the clutch assembly moves forward, it locks the position of the transmission rod 800 relative to the handle 700, and when the first clutch member 200 moves backward, it unlocks the position of the transmission rod 800 relative to the handle 700.

[0060] When the clutch assembly unlocks the transmission rod 800 relative to the handle 700, the handle 700 is in a free-spinning state, preventing the user from using it to open the door, thus ensuring good security. When unlocking is required, the clutch assembly locks the transmission rod 800 relative to the handle 700. At this point, the handle 700 can rotate together with the transmission rod 800, allowing the main lock cylinder to unlock. The use of this clutch assembly makes the door lock unlocking process more stable and reliable, reducing the risk of accidental unlocking failure.

[0061] In the embodiments, reference is made to Figure 3 The transmission rod 800 is arranged along the front-to-back direction, and its cross-section is polygonal. The door lock also includes a second clutch 900, which is movably arranged on the handle 700 in the left-to-right direction and can move closer to or further away from the transmission rod 800. When the first clutch 200 moves forward, it drives the second clutch 900 to approach and press against the transmission rod 800 through an inclined top structure. When the first clutch 200 moves backward, the second clutch 900 releases the transmission rod 800. By adding the second clutch 900, the movement trajectories of the first clutch 200 and the second clutch 900 are perpendicular, allowing for flexible placement of the clutch assembly, suitable for door lock products such as ball locks.

[0062] Specifically, the second clutch 900 is a sliding column, and the end of the second clutch 900 near the first clutch 200 has a sloping top surface, as does the end of the first clutch 200 near the second clutch 900. Optionally, either the first clutch 200 or the second clutch 900 may have a sloping top surface.

[0063] Specifically, the transmission rod 800 is a square rod. When the door lock needs to be unlocked, the first clutch member 200 of the clutch assembly moves forward and maintains its current position, pushing the second clutch member 900 against the transmission rod 800. At this time, turning the handle 700 can drive the main lock cylinder through the transmission rod 800 to unlock the door. After unlocking, the first clutch member 200 returns to its original position, and the second clutch member 900 releases the transmission rod 800, allowing the handle 700 to idle without rotating the transmission rod 800. When the handle 700 rotates in relation to the transmission rod 800, the transmission rod 800 contacts and actuates the second clutch member 900, causing the second clutch member 900 to move slightly away from the transmission rod 800.

[0064] Optionally, in other embodiments, a spring or magnet may be provided between the grip 700 and the second clutch 900 to cause the second clutch bracket to reset and move away from the drive rod 800.

[0065] In this embodiment, the handle 700 is equipped with a backup lock cylinder 710. The backup lock cylinder 710 has a rotatable dial 711, which is opposite to the first clutch 200. When the dial 711 rotates, it pushes the first clutch 200 forward. When the actuator 400 is unable to drive the clutch actuator 300 due to insufficient power, the user can unlock the door using the backup lock cylinder 710. Specifically, by inserting a key, the dial 711 of the backup lock cylinder 710 rotates, thus actuating the first clutch 200, causing it to move forward and lock the transmission rod 800, ultimately unlocking the door. The backup lock cylinder 710 can be used in emergencies, improving the security of the door lock.

[0066] Specifically, the first clutch 200 is provided with an extension arm. When the dial 711 rotates, it pushes the extension arm to move the first clutch 200 forward.

[0067] Specifically, the door lock also contains a battery and a circuit board. The battery powers the motor, and the circuit board controls the motor's operation.

[0068] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0069] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A clutch assembly, characterized in that, include: Base (100); The first clutch element (200) is movably disposed on the base (100) in the front-rear direction; A clutch drive unit (300) is rotatably mounted on the base (100) with its rotation axis arranged in the front-rear direction. The clutch drive unit (300) is located behind the first clutch unit (200). The clutch drive unit (300) has an initial angle position and a push angle position. When the clutch drive unit (300) rotates from the initial angle position to the push angle position, the clutch drive unit (300) drives the first clutch unit (200) to move forward. When the clutch drive unit (300) rotates from the push angle position to the initial angle position, the first clutch unit (200) can move backward. A driver (400) is disposed on the base (100) and is used to drive the clutch drive (300) to rotate; An elastic reset member (500) is disposed on the base (100) and is capable of applying a force to move the first clutch member (200) backward; A limiting structure (600) is provided between the base (100) and the clutch drive (300), the limiting structure (600) being used to limit the rotation of the clutch drive (300) relative to the base (100) between the initial angular position and the pushing angular position.

2. The clutch assembly according to claim 1, characterized in that: The limiting structure (600) includes a limiting block (610) and two limiting stops (621). The two limiting stops (621) are arranged at intervals around the rotation axis of the clutch drive (300) and disposed on the clutch drive (300). The limiting block (610) is disposed on the base (100) and is located between the two limiting stops (621) and can move between the two limiting stops (621).

3. The clutch assembly according to claim 2, characterized in that: The limiting structure (600) includes a limiting groove (620), which is arc-shaped and arranged around the rotation axis of the clutch drive (300). The two ends of the limiting groove (620) form the limiting stop (621), and the limiting block (610) is located in the limiting groove (620).

4. The clutch assembly according to claim 1, characterized in that: The first clutch member (200) has a first boss (210) on its rear side, and the clutch drive member (300) has a second boss (310) on its front side. At the initial angle position, the first boss (210) and the second boss (310) are offset around the rotation axis of the clutch drive member (300). At the pushing angle position, the first boss (210) and the second boss (310) are opposite each other.

5. The clutch assembly according to claim 4, characterized in that: The first boss (210) and the second boss (310) have the same protrusion height.

6. The clutch assembly according to claim 1, characterized in that: The first clutch (200) is provided with a first magnet (220), and the clutch drive (300) is provided with a second magnet (320). At the initial angle position, the first magnet (220) and the second magnet (320) are offset around the rotation axis of the clutch drive (300). At the pushing angle position, the first magnet (220) and the second magnet (320) are opposite to each other and repel each other.

7. The clutch assembly according to claim 1, characterized in that: The driver (400) is configured as a motor, and the motor has an output shaft (410) in the front-rear direction. The output shaft (410) passes through the clutch drive (300), and the clutch drive (300) is connected to the output shaft (410) and the two rotate synchronously. The first clutch (200) has a clearance hole (230) in the front-rear direction. The output shaft (410) is inserted into the clearance hole (230), and there is a gap between the output shaft (410) and the hole wall of the clearance hole (230).

8. A door lock, characterized in that, include: Grip (700); A transmission rod (800) is rotatably mounted on the handle (700) with its rotation axis arranged along its length. The transmission rod (800) is used to drive the main lock cylinder. The clutch assembly according to any one of claims 1 to 7, the clutch assembly being disposed on the grip (700), wherein when the first clutch member (200) of the clutch assembly moves forward, it locks the position of the transmission rod (800) relative to the grip (700), and when the first clutch member (200) of the clutch assembly moves backward, it unlocks the position of the transmission rod (800) relative to the grip (700).

9. The door lock according to claim 8, characterized in that: The transmission rod (800) is arranged in the front-to-back direction, and the cross-section of the transmission rod (800) is polygonal. The door lock also includes a second clutch (900), which is movably arranged in the left-to-right direction on the handle (700) and can move closer to or away from the transmission rod (800). When the first clutch (200) moves forward, the second clutch (900) is driven to approach and press against the transmission rod (800) through the inclined top structure. When the first clutch (200) moves backward, the second clutch (900) releases the transmission rod (800).

10. The door lock according to claim 8, characterized in that: The handle (700) is provided with a spare lock cylinder (710), and the spare lock cylinder (710) is rotatably provided with a dial (711). The dial (711) is opposite to the first clutch (200), and when the dial (711) rotates, it can push the first clutch (200) to move forward.

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