CN220117922U - Door lock with clutch device - Google Patents

Abstract

The utility model discloses a door lock with a clutch device, which comprises a shell, a lock tongue assembly and a clutch device, wherein the clutch device is provided with a motor, a speed reducing tooth set, a reversing tooth set, a driving tooth set and an unlocking assembly, wherein the motor is connected with the speed reducing tooth set through a turbine, so that the clutch device has a self-locking function, and the lock tongue is prevented from being ejected out of the shell under the driving of a return spring, wherein the reversing tooth set is driven to be meshed or separated from the driving tooth set by the speed reducing tooth set, so that the driving direction of the reversing tooth set to the driving tooth set can be changed by changing the output direction of the motor, the bidirectional driving of the driving tooth set is realized, the reversing tooth set can be pushed by an unlocking rod to move relative to the shell, the reversing tooth set can be moved to be separated from the driving tooth set, and the unlocking block can drive the driving tooth set to move relative to the shell when the reversing tooth set is separated from the driving tooth set, so that the lock tongue is retracted into the shell, and the problem that the door lock can not be opened due to self-locking of the motor and the speed reducing tooth set when the motor is invalid can be avoided, and the safety of the door lock is improved.

Description

Door lock with clutch device

Technical Field

The utility model relates to a door lock, in particular to a door lock with a clutch device.

Background

The existing electronic door lock adopts a bidirectional driving motor to realize bidirectional movement of the lock tongue, and the lock tongue retracted into the lock body is easy to pop out of the shell under the action of the reset spring because the existing bidirectional driving motor lacks a self-locking function, and in order to avoid the lock tongue from popping out of the shell under the action of the spring, a stop or a limiting structure is additionally required to be arranged, so that the whole structure of the door lock is complex.

Disclosure of Invention

The utility model aims to provide a door lock with a clutch device, which solves the problem that a bidirectional driving motor in the current door lock lacks a self-locking function, and a lock tongue retracted into a lock body is easy to pop out of a shell under the driving of a reset spring.

The utility model is realized by the following technical scheme:

the door lock with the clutch device comprises a shell, a lock tongue assembly and a clutch device, wherein the lock tongue assembly is driven by the clutch device, the clutch device is provided with a motor, a speed reducing gear set, a reversing gear set, a driving gear set and an unlocking assembly, and the lock tongue assembly is provided with a lock tongue; the motor is in transmission connection with the speed reduction gear set through a worm; the reversing tooth group is engaged with or separated from the driving tooth group by the speed reducing tooth group, and the reversing tooth group can drive the driving tooth group to drive the lock tongue assembly when engaging with the driving tooth group so that the lock tongue stretches out of or retracts into the shell; the unlocking component is provided with an unlocking rod and an unlocking block which are movably connected with the shell, the unlocking rod can move relative to the shell to push the reversing tooth group to enable the reversing tooth group to move away from the driving tooth group, and the unlocking block can rotate relative to the shell when the reversing tooth group is separated from the driving tooth group to drive the lock tongue component, so that the lock tongue is retracted into the shell.

Further, the unlocking assembly is further provided with a reset rod for enabling the unlocking rod to move away from the reversing tooth set, the unlocking rod is provided with a propping portion, one end of the reset rod is connected to the shell, the other end of the reset rod is propped against the propping portion, the reset rod is elastic, and the reset rod has an elastic tendency for driving the unlocking rod to move in a direction away from the reversing tooth set.

Further, the unlocking rod is provided with an unlocking state and a resetting state, in the resetting state, the lower end of the unlocking rod is arranged at intervals with the reversing tooth group, and in the unlocking state, the lower end of the unlocking rod pushes against the reversing tooth group; the shell is provided with a long through hole, the unlocking rod is provided with a deflector rod, the deflector rod extends out of the shell from the long through hole, and the unlocking rod is switched between an unlocking state and a resetting state when the deflector rod moves along the long through hole.

Further, the unlocking rod is provided with a clamping fork, a connecting rod, a stopping rod and a pushing block, the clamping fork, the connecting rod and the pushing block are sequentially connected, the stopping rod is connected to the connecting rod and forms the pushing block, the shifting rod is connected to the pushing block, the clamping fork is matched with the unlocking block in a clamping manner, and the pushing block is arranged at intervals with the reversing tooth group in a reset state of the unlocking rod and pushes the reversing tooth group in an unlocking state of the unlocking rod.

Further, the driving gear group is provided with a main gear, a pinion and a rack, the main gear is used for being meshed with the reversing gear group which moves in place, the pinion and the main gear are coaxial gears, the pinion is arranged on one side of the main gear, which is opposite to the unlocking rod, and is meshed with the rack, and the rack is used for driving the lock tongue assembly; and when the main gear is meshed with the reversing gear group, the auxiliary gear is driven to drive the rack, so that the lock tongue is driven to move.

Further, the unlocking block is rotatably connected to the main gear and coaxially arranged with the main gear, a first pushing handle is arranged on one side of the main gear, which is opposite to the auxiliary gear, a second pushing handle is arranged on one side of the unlocking block, which is opposite to the main gear, and the second pushing handle can be matched with the first pushing handle to push the main gear when the reversing gear group is separated from the main gear.

Further, the reversing gear group is provided with a driving gear, a reversing gear and a swinging piece, the driving gear is in transmission connection with the speed reduction gear group, the swinging piece is in rotation connection with the driving gear, and the reversing gear is meshed with the driving gear and is abutted against the swinging piece; when the driving gear rotates, the swinging piece and the reversing gear are driven to rotate by taking the joint of the swinging piece and the driving gear as an axle center, so that the reversing gear is meshed with or separated from the driving tooth set, and when the reversing gear is meshed with the driving tooth set, the driving tooth set can be driven to drive the lock tongue assembly, so that the lock tongue stretches out or retracts into the shell.

Further, the shell is provided with a containing groove for containing the swinging piece, the middle part of the swinging piece is rotationally connected to the driving gear, the number of the reversing gears is 2, two reversing gears are positioned on two opposite sides of the driving gear, and when any reversing gear is meshed with the driving gear group, two ends of the swinging piece are abutted against the containing groove to stop rotating.

Further, when the unlocking rod moves relative to the shell to push the swinging piece, the swinging piece and the reversing gear rotate around the joint of the swinging piece and the driving gear as an axis, so that the reversing gear is separated from the driving gear group.

Further, the unlocking rod is provided with a pushing inclined plane at one side of the unlocking rod opposite to the swinging member, the swinging member is provided with a pushing surface at one side of the swinging member opposite to the unlocking rod, and when the unlocking rod moves to push the swinging member, the pushing inclined plane is abutted against the pushing surface to enable the swinging member and the reversing gear to rotate by taking the joint of the swinging member and the driving gear as an axis, so that the reversing gear is separated from the driving gear group.

The technical scheme has the advantages that the clutch device in the door lock with the clutch device is configured into the motor, the speed reducing gear set, the reversing gear set, the driving gear set and the unlocking component, wherein the motor and the speed reducing gear set are connected through the turbine to form a turbine worm structure, so that the clutch device has a self-locking function, the spring bolt is prevented from being ejected out of the shell under the driving of the reset spring, the reversing gear set is meshed with or separated from the driving gear set through the driving of the speed reducing gear set, the driving direction of the reversing gear set to the driving gear set can be changed through changing the output direction of the motor, the bidirectional driving of the driving gear set is realized, further, the bidirectional driving of the spring bolt assembly is realized, the spring bolt can be movably stretched out of or retracted into the shell, the reversing gear set can be moved out of the driving gear set through the movement of the unlocking rod relative to the shell, and the unlocking block can drive the driving gear set to move the spring bolt assembly to retract into the shell through the rotation of the driving gear set relative to the shell when the reversing gear set is separated from the driving gear set, so that the problem that the door lock cannot be opened due to the self-locking of the motor and the speed reducing gear set when the motor fails can be avoided, and the safety is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below.

FIG. 1 is a front view of a door lock with clutch device according to an embodiment of the present disclosure;

fig. 2 is a front view (hidden part of the housing) of the door lock with clutch device disclosed in the embodiment;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a front view of the door lock with clutch device (concealing part of the housing and part of the unlocking block) disclosed in the embodiment;

FIG. 5 is an assembled perspective view of the tongue assembly, reversing device, unlocking lever and unlocking block;

FIG. 6 is an assembled partially exploded view of the tongue assembly, reversing device, unlocking lever and unlocking block;

FIG. 7 is an assembled partially exploded view of the tongue assembly, reversing device, unlocking lever and unlocking block

Fig. 8 is a perspective view of the unlocking lever.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: as shown in fig. 1-8, the door lock with the clutch device comprises a shell 1, a lock tongue assembly 2 and a clutch device 3, wherein the lock tongue assembly 2 is arranged in the shell 1 and driven by the clutch device 3, the clutch device 3 is provided with a motor 301, a speed reducing tooth set 302, a reversing tooth set 303, a driving tooth set 304 and an unlocking assembly 305, the lock tongue assembly 2 is provided with a lock tongue, the motor 301 is in transmission connection with the speed reducing tooth set 302 through a worm (not shown in the figure), the reversing tooth set 303 is engaged with or disengaged from the driving tooth set 304 through the driving tooth set 302, the driving tooth set 304 can be driven to drive the lock tongue assembly 2 to move when the reversing tooth set 303 is engaged with the driving tooth set 304, the lock tongue extends out of or retracts into the shell 1, the unlocking assembly 305 is provided with an unlocking rod 306 and an unlocking block 307 which are movably connected with the shell 1, the unlocking rod 306 can move against the reversing tooth set 303 to enable the reversing tooth set 303 to move away from the driving tooth set 304, and the unlocking block 307 can drive the driving tooth set 304 to move when the reversing tooth set 303 is separated from the driving tooth set 304, and the shell 1 can drive the driving tooth set 304 to move, so that the lock tongue is retracted into the shell 1. The present embodiment provides a door lock with a clutch device 3, so as to solve the problem that a bidirectional driving motor in the current door lock lacks a self-locking function, and a lock tongue retracted into a lock body is easy to eject out of a housing under the driving of a reset spring, mainly by configuring the clutch device 3 driving the lock tongue assembly 2 to move into the motor 301, a reduction gear set 302, a reversing gear set 303, a driving gear set 304 and an unlocking assembly 305, wherein, since the motor 301 and the reduction gear set 302 form a worm and gear structure through a worm, the clutch device 3 has a self-locking function, the lock tongue is prevented from ejecting out of the housing under the driving of the reset spring, wherein, since the reversing gear set 303 is driven by the reduction gear set 302 to engage or disengage from the driving gear set 304, the output direction of the reversing gear set 303 to the driving gear set 304 can be changed by changing the output direction of the motor 301, the bidirectional driving of the driving gear set 304 is realized, and further the bidirectional driving of the lock tongue assembly 2 is realized, and the lock tongue can be extended or retracted into the housing 1, wherein, since the unlocking bar 306 can move against the reversing gear set 303 to move the driving gear set 304 relative to the housing 1, and the lock tongue 303 can not be opened when the reversing gear set 304 is disengaged from the motor set 302 and the reversing gear set is disengaged from the housing 1, thereby the problem that the lock tongue is prevented from being disabled when the door lock is driven by the reversing gear set 1.

In the embodiment of the present utility model, the unlocking assembly 305 further has a reset lever 308 for moving the unlocking lever 306 away from the reversing tooth set 303, the unlocking lever 306 has a supporting portion 309, one end of the reset lever 308 is connected to the housing 1, and the other end of the reset lever is supported on the supporting portion 309, and the reset lever 308 has elasticity, which has an elastic tendency to drive the unlocking lever 306 to move away from the reversing tooth set 303. Since the unlocking assembly 305 has the reset lever 308 for moving the unlocking lever 306 away from the reversing tooth set 303, the unlocking lever 306 is far away from the reversing tooth set 303 when the door lock is used normally, and interference to the reversing tooth set 303 is avoided.

In the embodiment of the utility model, the unlocking rod 306 has an unlocking state and a resetting state, in the resetting state, the lower end of the unlocking rod 306 is arranged at intervals with the reversing tooth group 303, in the unlocking state, the lower end of the unlocking rod 306 pushes against the reversing tooth group 303, the shell 1 is provided with the long through hole 101, the unlocking rod 306 is provided with the deflector rod 310, the deflector rod 310 extends out of the shell 1 from the long through hole 101 and can move along the long through hole 101, and when the deflector rod 310 moves along the long through hole 101, the unlocking rod 306 is switched between the unlocking state and the resetting state. Because the unlocking rod 306 is provided with the deflector rod 310 extending out of the shell 1, when the motor 301 fails, an operator can drive the reversing tooth set 303 to move away from the driving tooth set 304 by pulling the deflector rod 310, so that the operation is simple and quick.

In the embodiment of the present utility model, the unlocking lever 306 has a clamping fork 311, a connecting rod 312, a stop rod 313 and a pushing block 314, where the clamping fork 311, the connecting rod 312 and the pushing block 314 are sequentially connected, the stop rod 313 is connected to the connecting rod 312 to form a pushing part 309 with the connecting rod 312, the driving lever 310 is connected to the pushing block 314, the clamping fork 311 is in clamping engagement with the unlocking block 307, and the pushing block 314 is spaced from the reversing tooth set 303 in the reset state of the unlocking lever 306 and pushes the reversing tooth set 303 in the unlocking state of the unlocking lever 306. Since the unlocking rod 306 has the clamping fork 311 which is matched with the unlocking block 307 in a clamping way, the assembly of the unlocking rod 306 is more stable, and the unlocking rod 306 is prevented from shifting when moving relative to the shell 1.

In the embodiment of the present utility model, the driving gear set 304 has a main gear 315, a pinion 316 and a rack 317, the main gear 315 is used for meshing with the reversing gear set 303 moving in place, the pinion 316 and the main gear 315 are coaxial gears, the pinion 316 is disposed on a side of the main gear 315 opposite to the unlocking lever 306 and meshes with the rack 317, the rack 317 is used for driving the latch bolt assembly 2, and when the main gear 315 meshes with the reversing gear set 303, the pinion 316 is driven to drive the rack 317 and further drive the latch bolt to move. Since the driving gear set 304 has the main gear 315 engaged with the reversing gear set 303, the rack 317 for driving the latch bolt assembly 2 to move, and the pinion 316 engaged with the rack 317 and rotated synchronously with the main gear 315, the driving gear set 304 can drive the latch bolt assembly 2 to retract or extend the latch bolt from the housing 1 under the driving of the reversing gear set 303.

In the embodiment of the present utility model, the latch bolt assembly 2 has a sliding seat slidably connected to the housing 1 and a latch bolt connected to the sliding seat, and the rack 317 has a push rod 318 for pushing the sliding seat, where the push rod 318 pushes the sliding seat to drive the latch bolt to move out of or retract into the housing 1. Since the latch bolt assembly 2 has a sliding seat and a latch bolt, the rack bar 317 has a push rod 318 for pushing the sliding seat, so that the sliding seat can move under the driving of the push rod 318, and the latch bolt is driven to move to extend out of or retract into the housing 1.

In the embodiment of the utility model, the lock tongue assembly 2 is provided with a latch tongue assembly 203 and a latch tongue assembly 204, the slide seat is provided with a latch tongue slide seat 205 and a latch tongue slide seat 206, the lock tongue is provided with a latch tongue 207 and a latch tongue 208, the latch tongue 207 is connected to the latch tongue slide seat 205 and forms the latch tongue assembly 203 with the latch tongue slide seat 205, the latch tongue 208 is connected to the latch tongue slide seat 206 and forms the latch tongue assembly 204 with the latch tongue slide seat 206, the latch tongue slide seat 205 and the latch tongue slide seat 206 are arranged at intervals up and down, the push rod 318 is provided with a latch tongue push rod 320 and a latch tongue push rod 319, the latch tongue push rod 320 is used for pushing the latch tongue slide seat 205, the latch tongue push rod 319 is used for pushing the latch tongue slide seat 206, when the latch tongue push rod 320 pushes the latch tongue slide seat 205, the latch tongue 207 is driven to move to extend or retract into the shell 1, and the latch tongue push rod 319 is driven to move to extend or retract into the shell 1 when pushing the latch tongue slide seat 206. Since the latch bolt assembly 2 has the latch bolt assembly 203 and the square bolt assembly 204, the safety of the door lock can be improved.

In the embodiment of the present utility model, the unlocking block 307 is rotatably connected to the main gear 315 and coaxially arranged with the main gear 315, a first pushing handle 321 is disposed on a side of the main gear 315 opposite to the auxiliary gear 316, a second pushing handle 322 is disposed on a side of the unlocking block 307 opposite to the main gear 315, and the second pushing handle 322 can cooperate with the first pushing handle 321 to push the main gear 315 when the reversing gear set 303 is separated from the main gear 315. Since the unlocking block 307 is rotatably connected to the main gear 315 and has the second pushing handle 322 that is in pushing fit with the first pushing handle 321, when the reversing gear set 303 is separated from the main gear 315, the unlocking block 307 can drive the main gear 315 to rotate, so that the lock tongue is retracted into the housing 1, and the door lock is unlocked.

In the embodiment of the present utility model, the reversing gear set 303 has a driving gear 323, a reversing gear 324 and a swinging member 325, the driving gear 323 is in transmission connection with the speed reducing gear set 302, the swinging member 325 is in rotational connection with the driving gear 323, the reversing gear 324 is meshed with the driving gear 323 and abuts against the swinging member 325, the swinging member 325 and the reversing gear 324 are driven to rotate by the rotation of the driving gear 323 by taking the connection part of the swinging member 325 and the driving gear 323 as an axis, so that the reversing gear 324 is meshed with or separated from the driving gear set 304, and the reversing gear 324 can drive the driving gear set 304 to drive the bolt assembly 2 to move when meshed with the driving gear set 304, so that the bolt extends out of or retracts into the housing 1. Because the reversing gear set 303 is provided with the driving gear 323, the reversing gear 324 and the swinging member 325, the driving gear 323 is in transmission connection with the speed reduction gear set 302, the swinging member 325 is in rotation connection with the driving gear 323, the reversing gear 324 is meshed with the driving gear 323 and is propped against the swinging member 325, so that the swinging member 325 and the reversing gear 324 can be driven to rotate by taking the connecting part of the swinging member 325 and the driving gear 323 as the axis when the driving gear 323 rotates, the reversing gear 324 is meshed with the driving gear set 304 to drive the bolt assembly 2 to move, and the bolt stretches out or stretches into the shell 1.

In the embodiment of the present utility model, when the unlocking lever 306 moves against the swing member 325 relative to the housing 1, the swing member 325 and the reversing gear 324 rotate around the connection point of the swing member 325 and the driving gear 323, so that the reversing gear 324 is separated from the driving gear set 304. Because the unlocking rod 306 moves relative to the housing 1 to push the swing piece 325, the swing piece 325 and the reversing gear 324 rotate with the joint of the swing piece 325 and the driving gear 323 as the axis, so that the reversing gear 324 is separated from the driving gear set 304, and the driving gear set 304 can drive the lock tongue to retract into the housing 1 under the driving of the unlocking block 307, thereby realizing the unlocking of the door body.

In the embodiment of the utility model, the middle part of the swing member 325 is rotatably connected to the driving gear 323, the number of the reversing gears 324 is 2, the two reversing gears 324 are located at two opposite sides of the driving gear 323, the housing 1 is provided with a containing groove 102 for containing the swing member 325, and when any reversing gear 324 engages with the driving gear set 304, the two ends of the swing member 325 are abutted against the containing groove 102 to stop rotating. Because the swing member 325 is accommodated in the accommodating groove 102 and abuts against the accommodating groove 102 to stop rotating when the reversing gears 324 are meshed with the driving gear set 304, the number of the reversing gears 324 is 2 and are separately arranged on two opposite sides of the driving gear 323, and therefore, on the premise of realizing bidirectional driving of the driving gear set 304, the moving stroke of the reversing gears 324 is shortened, and the structure is more compact and reasonable.

In the embodiment of the present utility model, the unlocking lever 306 is provided with a pushing inclined plane 326 at a side opposite to the swinging member 325, the swinging member 325 is provided with a pushing plane 327 at a side opposite to the unlocking lever 306, and when the unlocking lever 306 moves to push the swinging member 325, the pushing inclined plane 326 partially abuts against the pushing plane 327 to enable the swinging member 325 and the reversing gear 324 to rotate around the joint of the swinging member 325 and the driving gear 323 as an axis, so that the reversing gear 324 is separated from the driving gear set 304. Correspondingly, the number of the pushing surfaces 327 is 2, the two pushing surfaces 327 are respectively arranged on the same side as the two reversing gears 324 and correspond to each other one by one, the swinging piece 325 is provided with a abutting surface 328 between the two pushing surfaces 327, and the pushing inclined surface 326 is attached to the abutting surface 328 when pushing the reversing gears 324 away from the driving gear set 304.

In the embodiment of the present utility model, the speed reduction gear set 302 has a gear housing (not shown), a first input gear (not shown), a second input gear (not shown), and an output gear (not shown), where the first input gear, the second input gear, and the output gear are accommodated in the gear housing, the first input gear and the second input gear are coaxial gears, the first input gear is meshed with the worm, the second input gear is meshed with the output gear, the output gear is provided with an output shaft 329 extending out of the gear housing, and the driving gear 323 is connected to the output shaft 329 and rotates synchronously with the output gear.

It should be understood that the terms "first," "second," and the like are used herein to describe various information, but such information should not be limited to these terms, which are used merely to distinguish one type of information from another. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the utility model. Furthermore, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience in describing the present utility model and simplifying the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

The foregoing description of one or more embodiments provided in connection with the specific disclosure is not intended to limit the practice of the utility model to such description. Any approximation, or substitution of the technical deduction or substitution made for the technical deduction of the present utility model based on the inventive method, structure, etc. shall be considered as protection of the present utility model.

Claims (10)

1. The door lock with the clutch device comprises a shell and a lock tongue assembly, and is characterized by further comprising the clutch device, wherein the lock tongue assembly is driven by the clutch device, the clutch device is provided with a motor, a speed reducing gear set, a reversing gear set, a driving gear set and an unlocking assembly, and the lock tongue assembly is provided with a lock tongue;

the motor is in transmission connection with the speed reduction gear set through a worm;

the reversing tooth group is engaged with or separated from the driving tooth group by the speed reducing tooth group, and the reversing tooth group can drive the driving tooth group to drive the lock tongue assembly when engaging with the driving tooth group so that the lock tongue stretches out of or retracts into the shell;

the unlocking component is provided with an unlocking rod and an unlocking block which are movably connected with the shell, the unlocking rod can move relative to the shell to push the reversing tooth group to enable the reversing tooth group to move away from the driving tooth group, and the unlocking block can rotate relative to the shell when the reversing tooth group is separated from the driving tooth group to drive the lock tongue component, so that the lock tongue is retracted into the shell.

2. The door lock with clutch according to claim 1, wherein the unlocking assembly further has a reset lever that moves the unlocking lever away from the reversing tooth set, the unlocking lever has a butt portion, one end of the reset lever is connected to the housing, the other end of the reset lever abuts against the butt portion, and the reset lever has elasticity that has an elastic tendency to drive the unlocking lever to move in a direction away from the reversing tooth set.

3. The door lock with the clutch device according to claim 2, wherein the unlocking lever has an unlocking state in which the lower end of the unlocking lever is spaced from the reversing tooth set, and a reset state in which the lower end of the unlocking lever pushes against the reversing tooth set;

the shell is provided with a long through hole, the unlocking rod is provided with a deflector rod, the deflector rod extends out of the shell from the long through hole, and the unlocking rod is switched between an unlocking state and a resetting state when the deflector rod moves along the long through hole.

4. The door lock with the clutch device according to claim 3, wherein the unlocking lever has a fork, a connecting rod, a stop lever and a pushing block, the fork, the connecting rod and the pushing block are sequentially connected, the stop lever is connected to the connecting rod to form the pushing block with the connecting rod, the deflector lever is connected to the pushing block, the fork is in clamping fit with the unlocking block, and the pushing block is arranged at intervals with the reversing tooth set in a reset state of the unlocking lever and pushes the reversing tooth set in an unlocking state of the unlocking lever.

5. The door lock with clutch according to claim 1, wherein the driving gear group has a main gear for meshing with the reversing gear group moved in place, a pinion gear which is a coaxial gear with the main gear, and a rack gear which is provided on a side of the main gear opposite to the unlocking lever and meshes with the rack gear, the rack gear for driving the latch bolt assembly;

and when the main gear is meshed with the reversing gear group, the auxiliary gear is driven to drive the rack, so that the lock tongue is driven to move.

6. The door lock with the clutch device according to claim 5, wherein the unlocking block is rotatably connected to the main gear and coaxially arranged with the main gear, a first pushing handle is arranged on one side of the main gear opposite to the auxiliary gear, a second pushing handle is arranged on one side of the unlocking block opposite to the main gear, and the second pushing handle can be matched with the first pushing handle to push the main gear when the reversing gear group is separated from the main gear.

7. The door lock with clutch device according to claim 1, wherein the reversing gear group has a driving gear, a reversing gear, and a swinging member, the driving gear is in driving connection with the speed reduction gear group, the swinging member is in rotational connection with the driving gear, and the reversing gear is meshed with the driving gear and is abutted against the swinging member;

when the driving gear rotates, the swinging piece and the reversing gear are driven to rotate by taking the joint of the swinging piece and the driving gear as an axle center, so that the reversing gear is meshed with or separated from the driving tooth set, and when the reversing gear is meshed with the driving tooth set, the driving tooth set can be driven to drive the lock tongue assembly, so that the lock tongue stretches out or retracts into the shell.

8. The door lock with clutch according to claim 7, wherein the housing has a receiving groove for receiving the swinging member, the middle portion of the swinging member is rotatably connected to the driving gear, the number of the reversing gears is 2, two reversing gears are located on two opposite sides of the driving gear, and when any reversing gear engages with the driving gear group, two ends of the swinging member are abutted against the receiving groove to stop rotation.

9. The door lock with clutch according to claim 7, wherein when the unlocking lever moves against the swinging member with respect to the housing, the swinging member and the reversing gear are rotated about a joint between the swinging member and the driving gear, and the reversing gear is disengaged from the driving gear group.

10. The door lock with clutch according to claim 9, wherein the unlocking lever is provided with a pushing inclined surface on a side thereof opposite to the swinging member, the swinging member is provided with a pushing surface on a side thereof opposite to the unlocking lever, and when the unlocking lever moves to push the swinging member, the pushing inclined surface portion abuts against the pushing surface to rotate the swinging member and the reversing gear around a joint of the swinging member and the driving gear as an axis, so that the reversing gear is separated from the driving gear group.