CN114135159A - Door lock clutch mechanism - Google Patents

Abstract

The invention discloses a clutch mechanism, which belongs to the technical field of door locks and comprises a sliding assembly and a shifting assembly, wherein the sliding assembly comprises a guide groove plate and a sliding plate, and the guide groove plate is provided with a circular arc-shaped guide rail; the poking component is provided with a poking wheel; the poking assembly is positioned on the inner side of the guide rail, and the rotating center of the poking wheel is not overlapped with the circle center of the arc where the guide rail is positioned; the shifting wheel rotates to shift the sliding plate to slide in the guide rail, and the shifting wheel assembly is combined with the sliding plate in a releasable manner. This clutching mechanism is close to gradually and separately principle according to the circular arc of non-concentric circles, stirs the subassembly through stirring the subassembly and slides and in good time release in the guide rail, very ingenious solution the linkage of gear lock spring bolt and latch bolt, let the gear lock operation more stable, it is more laborsaving to unblank, has very big commercial value.

Description

Door lock clutch mechanism

Technical Field

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

Background

At present, most door locks on the market are gear locks, the structures in the locks are complex, and the clutch function is usually realized by matching a plurality of gears with other parts; the complex clutch structure also leads the lock tongue and the latch bolt to be only synchronously recovered, thus easily causing the excessive unlocking force and the breakage of the key in the unlocking process; the structure makes the lock tongue difficult to recover in place, particularly about 3mm at the maximum thickness, and the recovery of the lock tongue is pulled by the spring force. The lock has the advantages that the lock is also provided with a part of two-gear locks in the market, the structure of the two-gear locks is more complex, a plurality of clamping points are arranged in the using process of the two-gear locks, once the lock tongue stops at the clamping points and is clamped, the lock cylinder cannot be opened, and only the two-gear locks can be opened by force, so that the lockset is damaged.

Clutch mechanism all uses basically in the gear lock on the market, and current application number CN108757854A discloses a lock body clutch mechanism, realizes the separation and reunion function through stirring of the boss on the separation and reunion shifting block to the slider, and its realization process needs the separation and reunion shifting block to realize in the independent operation of perpendicular and 2 horizontal dimensions and the motion cooperation of slider on single dimension plane: firstly, the clutch shifting block is required to be pulled in the vertical direction, so that the clamping table at the lower end of the clutch shifting block is separated from the bayonet; then the clutch shifting block is rotated, so that the sliding block is shifted to be at the first position or the second position, and then the clamping table is required to be clamped in the clamping opening again. Because the realization of this separation and reunion function, two notches through the card platform on the separation and reunion shifting post and separation and reunion through-hole lower part are to two position location of slider, realize the separation and reunion function, and its flexibility is not high, and the operation is complicated, appears out of gear's the condition moreover easily.

Aiming at the defects of the existing gear lock in the market, a clutch mechanism is developed for solving the problem of knocking, wherein the clutch mechanism is simple, stable and efficient in structure; the use of the clutch structure can optimize parts in the lockset, the recovery of the lock tongue and the latch bolt can be independently controlled, and the occurrence that a key cannot be unlocked due to the clamping stagnation of an internal structure is reduced; the use of the clutch structure reduces the torque force of the lock cylinder and prevents the key from breaking.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a clutch mechanism aiming at the defects of the prior art, the clutch mechanism utilizes the principle that non-concentric circular arcs gradually approach and separate, and the sliding component is stirred by the stirring component to slide in the guide groove and timely release, so that unlocking and locking through the stirring component are skillfully realized, and meanwhile, the linkage of the lock tongue and the latch bolt of the gear lock is also solved, so that the gear lock is more stable to operate, and the unlocking is more labor-saving.

The invention adopts the following technical scheme:

the clutch mechanism comprises a sliding assembly and a shifting assembly, wherein the sliding assembly comprises a guide groove plate and a sliding block, and the guide groove plate is provided with a circular arc-shaped guide rail; the poking assembly is provided with a poking wheel, and the poking wheel is provided with poking teeth; the poking assembly is positioned on the inner side of the guide rail, and the rotating center of the poking wheel is not coincident with the circle center of the arc where the guide rail is positioned; when the shifting wheel rotates, the shifting teeth shift the sliding block to enable the sliding block to slide in the guide rail, and the shifting teeth and the sliding block are combined in a releasing mode. Rotating the shifting wheel, and engaging the shifting teeth with the sliding block; if the thumb wheel continues to rotate, the thumb wheel can push the sliding block to slide, and when the sliding block slides to the end part of the guide rail, the thumb wheel continues to rotate, and the thumb wheel is separated from the sliding block; when the reverse rotation dial wheel returns to the position where the dial teeth are separated from the front of the sliding block, the dial wheel is continuously rotated, the dial teeth and the sliding block can be jointed again, and if the dial wheel is continuously rotated, the dial teeth can push the sliding block to reversely slide.

Preferably, the thumb wheel can rotate 360 degrees, the distance between the rotation center of the thumb wheel and the center of the arc where the guide rail is located is 1-38mm, and the length of the thumb wheel is smaller than the radius of the arc where the guide rail is located.

Preferably, the poking assembly is a lock cylinder with a poking wheel, a protruding part on the poking wheel is a poking tooth, and the poking wheel can be driven to rotate through a key.

Preferably, the toggle assembly is manually turned by a key or the motor drives the dial wheel to rotate.

Preferably, the guide rail is a guide groove, the radian is 160-200 degrees, and the depth is 2-8 mm; the slider be equipped with 1 at least with the spacing post that the guide slot suited, spacing post is injectd the slider and is slided in the guide slot, spacing post is in can free rotation in the slider.

Preferably, the guide rail is a ridge rail, the radian is 160-200 degrees, and the height is 2-8 mm; the slider is provided with a groove matched with the ridge rail.

Preferably, the sliding block is provided with a tooth groove, and when the dial wheel rotates, the dial tooth dials a groove column of the tooth groove to enable the sliding block to slide in the sliding groove.

Preferably, the sliding block is of a circular arc structure, and the middle part of the inner arc surface is concave inwards to form a U-shaped tooth groove.

Preferably, the sliding block is of an arc structure, the inner arc surface is provided with an arc gear, and the radian is 120 degrees and 260 degrees.

Preferably, the guide groove plate is made by stamping.

Preferably, a door lock comprising a clutch mechanism according to any one of claims 1 to 9.

Preferably, the door lock further comprises a bottom shell, a lock tongue assembly, a latch bolt assembly and an upper cover plate, wherein the clutch mechanism, the lock tongue assembly and the latch bolt assembly are respectively installed in the bottom shell of the lock body and are covered by the upper cover plate;

preferably, the latch bolt assembly comprises a handle shifting shaft, a handle shifting fork, a shoulder pole and a latch bolt, the latch bolt is in an extended state normally through a compression spring, the handle shifting shaft is fixedly connected to the bottom shell, the handle shifting fork is rotatably connected with the handle shifting shaft, the shoulder pole is slidably connected to the lock bolt push plate through a pin shaft, and the clutch mechanism shifts the shoulder pole to push the handle shifting fork to rotate so as to drive the latch bolt to retract;

preferably, the door lock further comprises a transmission gear, the dragging plate is rotationally connected with the transmission gear through a transmission pin, and the transmission gear drives the dragging plate to move when rotating, so that the lock tongue extends out or retracts.

Preferably, when the lock tongue retracts, the transmission gear automatically blocks.

Preferably, the door lock further comprises a limiting component and a stabilizing component, wherein the limiting component comprises a limiting shifting block, a limiting sheet and a limiting torsion spring; the stabilizing assembly comprises a shifting shaft gear and a shifting shaft toothed plate, the shifting shaft gear, the limiting piece and the transmission gear are coaxially sleeved and linked, the shifting shaft gear is meshed with a gear of the shifting shaft toothed plate, and the limiting shifting block is fixed in a limiting mode through the limiting piece.

Preferably, the door lock further comprises an auxiliary lock tongue assembly and a top and bottom rod, wherein the top and bottom rod is fixedly provided with an auxiliary lock tongue guide pin matched with an inclined push-pull groove on the auxiliary lock tongue assembly, and the lock tongue push plate is provided with a top and bottom rod guide pin matched with an inclined slide groove of the top and bottom rod; the lock tongue component drives the ground rod to move, and then drives the auxiliary lock tongue to extend or retract.

The working principle is as follows:

when the thumb wheel rotates, because the thumb wheel is rotatory round its rotation center (axle), be equivalent to dial the tooth and do circular motion, because its centre of a circle and the centre of a circle of convex guide rail are not coincident, when the thumb wheel rotated to dial the tooth and is close to convex guide rail, continue to rotate the thumb wheel, dial the tooth and will be more and more near from the guide rail, then more and more far away again, utilize this principle, can be ingenious through dialling the cooperation of tooth and slider, realize the separation and reunion to can make and dial the tooth and promote the slider and slide in the guide rail.

The invention has the advantages that according to the principle of non-concentric circular arcs approaching gradually and separating gradually, the sliding component is stirred by the stirring component to slide in the guide rail and release timely, the internal structure of the lock body can be simplified, the unlocking and locking of the gear lock and the linkage of the lock tongue and the latch tongue are solved skillfully, the gear lock operates more stably, the unlocking is more labor-saving, and the gear lock has great commercial value.

Drawings

FIG. 1 is a schematic structural diagram of a first state of a clutch mechanism according to an embodiment of the present invention; FIG. 2 is a structural diagram of a clutch mechanism according to an embodiment of the present invention; FIG. 3 is a schematic structural view of a slider (with an arc-shaped gear) according to an embodiment of the present invention; FIG. 4 is a bottom view of the slider of FIG. 3; FIG. 5 is a schematic view of a guide groove plate according to an embodiment of the present invention; FIG. 6 is a schematic structural view of a door lock in an unlocked state according to an embodiment of the present invention; FIG. 7 is a schematic structural view of a door lock in a locking state according to an embodiment of the present invention; FIG. 8 is a schematic view of the clutch mechanism and the driving gear according to the embodiment of the present invention; fig. 9 is a schematic structural view of a latch bolt assembly according to an embodiment of the present invention; FIG. 10 is an exploded view of a gear lock according to an embodiment of the present invention; in the drawing, 11 lock tongues, 12 lock tongue push plates, 13 dragging plates, 14 push plate guide pins, 15 ground lever guide pins, 21 latch tongues, 22 handle shift forks, 23 carrying poles, 24 pin shafts, 25 handle shift shafts, 31 lock cylinders, 311 shift wheels, 312 shift teeth, 313 lock holes, 32 guide groove plates, 321 guide grooves, 322 backing plates, 33 slide blocks, 331 circular arc racks, 332 clamp grooves, 333 limit columns, 41 transmission gears, 411 transmission pins, 51 auxiliary tongues, 52 auxiliary tongue panels, 521 panel sliding grooves, 522 panel guide pins, 53 auxiliary tongue shifting pieces, 531 shifting piece pin holes, 532 oblique push-pull grooves, 533 shifting piece sliding grooves, 54 auxiliary tongue pin columns, 61 ground levers, 611 auxiliary tongue guide pins, 612 ground lever oblique sliding grooves, 71 limit shifting blocks, 72 limit pieces, 73 limit torsion springs, shifting shaft gears, 75 shifting shaft toothed plates, 81 bottom cases and 82 upper cover plates.

Detailed Description

The following examples are given in connection with the accompanying drawings to further illustrate the embodiments of the present application. It should be noted that the embodiments and features in the embodiments in the present application may be combined with each other without conflict, and the present invention is not limited to the description of the embodiments below.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "bottom", "top", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Example 1

As shown in fig. 1 to 5, embodiment 1 of the present invention provides a clutch mechanism, including a sliding assembly and a toggle assembly, where the sliding assembly includes a guide groove plate 32 and a slider 33, the guide groove plate 32 is provided with an arc-shaped guide groove 321, the radian of the guide groove 321 is 160 degrees and 200 degrees, and the depth of the guide groove 321 is 2 to 8 mm; the middle part of the inner circular arc of the sliding block 33 is internally concave to form a U-shaped tooth socket 332, the outer circular arc is fixedly provided with a circular arc gear 331, and the radian is 120 DEG and 260 DEG; in this embodiment, the toggle assembly is a lock cylinder 31 with a toggle wheel 311, a projection on the toggle wheel 311 is a toggle tooth 312, when the key rotates the lock cylinder 31, the toggle wheel 311 rotates, the toggle tooth 312 is releasably combined with a tooth groove 332 of the slider, and after being combined, the toggle tooth 312 pushes the slider 33 to slide;

the lock cylinder 31 is arranged at the inner side of the guide groove 321, that is, the part of the lock cylinder 31 close to the guide groove 321 is surrounded by the guide groove 321, and the rotation center (the circle center) of the thumb wheel 311 does not coincide with the circle center of the arc where the guide groove 321 is located; as a preferable scheme of the embodiment, the distance between the rotation center (center) of the thumb wheel 311 and the center of the arc where the guide groove 321 is located is 1-38 mm.

The specific implementation mode is as follows: by rotating the lock cylinder 31, the shifting teeth 312 on the shifting wheel 311 of the lock cylinder 31 can be combined with the tooth grooves 332 of the sliding block 33, and then the sliding block 33 is shifted to slide in the guide groove 321; the setting bit 312 is releasably engaged with the slider 33, that is, when the slider 33 slides along the guide groove 321 to the lower end, the engagement between the setting bit 312 and the slider 33 is released (fig. 1), and the key is further rotated clockwise without further sliding of the slider 33. When the lock cylinder 31 is shifted counterclockwise to rotate (reversely), the shifting teeth 312 and the sliding block 33 are engaged at the lower end of the sliding groove 321, the lock cylinder 31 is further rotated counterclockwise to drive the sliding block 33 to slide along the guide groove 321, and when the lock cylinder slides to the upper end of the sliding groove 321, the engagement between the shifting teeth 312 and the sliding block 33 is released (fig. 2).

As a preferable scheme of this embodiment, at least 1 limiting post 333 corresponding to the guiding groove 321 is fixedly installed on the sliding block, and the sliding block 33 is limited to slide in the guiding groove 321.

In addition, in the embodiment, the key with the thumb wheel 311 is used to drive the lock cylinder 31 to poke the slider 33 to slide in the guide groove 321, and in practical application, the motor can also be used to drive the thumb wheel 311 to realize the same function.

Example 2

As shown in fig. 6-10, an embodiment of the present invention provides a door lock, which includes a bottom case, a latch bolt assembly, an auxiliary latch bolt assembly, a top-bottom rod, a clutch mechanism, and an upper cover plate, wherein the latch bolt assembly, the auxiliary latch bolt assembly, the top-bottom rod, and the clutch mechanism are respectively installed in a matching position of the bottom case of the lock body and are covered by the upper cover plate, and specifically:

the bolt assembly comprises a bolt 11, a bolt push plate 12 and a dragging plate 13, wherein the dragging plate 13 is rotatably connected with the bolt push plate 12 through a push plate guide pin 14, the dragging plate 13 is rotatably connected with a transmission gear 41 through a transmission pin 411, the clutch mechanism drives the transmission gear 41 to rotate through an arc-shaped rack 331, and the dragging plate 13 is pushed and pulled to enable the bolt 11 to extend or retract.

The latch bolt subassembly includes handle shifting shaft 25, latch bolt 21, handle shift fork 22, shoulder pole 23, and latch bolt 21 is for stretching out the state through the compression spring normality, and handle shifting shaft 25 fixed connection is on drain pan 81, and handle shift fork 22 rotates with handle shifting shaft 25 to be connected, and shoulder pole 23 passes through round pin axle 24 sliding connection on spring bolt push pedal 12, and separation and reunion actuating mechanism stirs shoulder pole 23 and then promotes handle shift fork 22 and rotate, and then drives the retraction of latch bolt 21.

The auxiliary tongue assembly comprises an auxiliary tongue 51, an auxiliary tongue embedded plate 52 and an auxiliary tongue shifting piece 53, wherein the auxiliary tongue embedded plate 52 is fixedly provided with an embedded plate sliding groove 521 and an embedded plate guide pin 522, and the auxiliary tongue shifting piece 53 is fixedly provided with a shifting piece pin hole 531, an inclined push-pull groove 532 and a shifting piece sliding groove 533; the plectrum pin hole 531 is movably connected with the panel chute 521 through an auxiliary tongue pin shaft 54, the inclined push-pull groove 532 is matched with an auxiliary tongue guide pin 611, and the plectrum chute 533 is matched with the panel guide pin 522; a panel guide pin 522 is fixedly arranged on the auxiliary tongue panel 52 and is matched with the pull sheet sliding groove.

The top and bottom rod 61 is fixedly provided with an auxiliary tongue guide pin 611 matched with an inclined push-pull groove 532 on the auxiliary tongue shifting piece 53, the lock tongue push plate 12 is provided with a top and bottom rod guide pin 15 matched with the inclined top and bottom rod sliding groove 612, and when the lock tongue push plate 12 moves, the top and bottom rod 61 is pushed to slide left and right, so that the auxiliary tongue 51 is driven to synchronously extend and retract.

The clutch mechanism comprises a lock core 31, a guide groove plate 32 and a sliding block 33. In this embodiment, the lock cylinder 31 is used as the thumb wheel in this application, the lock body bottom case and the upper cover plate are both provided with lock holes matched with the lock cylinder, in practical application, other thumb wheels, such as a motor-driven thumb wheel, can be used, and the function of this application can be realized as long as the thumb wheel includes a thumb tooth capable of freely rotating around the center; the guide groove plate 32 is arranged at the periphery of the lock core 31 and is riveted with the bottom shell 81 and the upper cover plate 82 respectively, in the embodiment, 2 guide groove plates 32 are used, the guide groove plates 32 are made by stamping of stamping parts, arc-shaped guide grooves 321 are fixedly arranged on the guide groove plates 32, and the guide groove plates 32 are riveted and fixed with the bottom shell and the upper cover plate through backing plates 322; the outer side of the sliding block 33 is fixedly provided with an arc-shaped rack 331, the radian is 120-260 degrees, preferably 160 degrees, and the arc-shaped rack 331 is meshed with the transmission gear 41; the inner side of the sliding block is provided with a U-shaped clamping groove 38, when the thumb wheel 3 rotates, the thumb teeth 312 poke the side wall of the clamping groove 38, so that the sliding block 33 slides in the guide groove 321; the slider is also provided with 2 limiting posts 333 which are matched with the guide grooves 321, the limiting posts 333 limit the slider 33 to slide in the guide grooves 321, and the limiting posts 333 can freely rotate in the slider 33. The center of rotation of the lock cylinder 31, that is, the center of the circle formed by the rotation of the dialing tooth 312, is not coincident with the center of the arc where the guide slot 321 is located, so that the dialing tooth 312 is releasably engaged with the slider 33, that is, the dialing tooth 312 of the lock cylinder 31 rotates in the arc of the guide slot 321 to be engaged, and when the dialing tooth 312 rotates out of the arc of the guide slot 321, the rotation is released, and at this time, the dialing tooth 312 is disengaged from the slot 38 of the slider 33.

The gear lock of the embodiment is used:

if the lock is in the closed position (fig. 2), the key is turned clockwise, causing the tumbler 3 to rotate, and when turned upwards the teeth 312 engage the notches 38 of the slider 33. When the sliding block 33 continues to rotate, the shifting teeth 312 shift the sliding block 33 to slide along the guide groove 321, and the circular arc-shaped rack 331 of the sliding block 33 drives the transmission gear 41 to rotate, so as to drive the dragging plate 13 to move downwards, and the bolt 11 retracts. At this time, the key is continuously rotated, the shifting teeth 312 are separated from the clamping grooves 38 of the sliding blocks 33, when the key is continuously rotated to the upper side, the shifting teeth 312 are in butt joint with the carrying pole 23, the shifting teeth 312 shift the carrying pole 23 to slide rightwards, then the lever handle shifting fork 22 is pushed to rotate, and the latch bolt 21 is driven to retract. Because the top and bottom rod 61 is fixedly provided with the auxiliary tongue guide pin 611 matched with the inclined push-pull groove 532 on the auxiliary tongue component, the lock tongue push plate 12 is provided with the top and bottom rod guide pin 15 matched with the inclined slide groove 612 of the top and bottom rod, so that the lock tongue 11 and the auxiliary tongue 51 can retract synchronously.

If the lock is in the unlocked state (fig. 1), the key is turned counterclockwise, which causes the tumbler 3 to rotate, and when turned downward, the teeth 312 engage the notches 38 of the slider 33. When the sliding block 33 slides along the guide slot 321, the circular-arc-shaped rack 331 of the sliding block 33 drives the transmission gear 41 to rotate, and further drives the dragging plate 13 to move upward, the lock tongue 11 extends out, and at this time, the transmission gear 41 can be automatically locked. Specifically, a protruding structure is fixedly arranged in the non-toothed area on the opposite side of the transmission gear 41, and when the transmission gear is locked, the protruding structure can be clamped with a limit stop pillar beside the transmission gear. Because the top and bottom rod 5 is fixedly provided with the auxiliary tongue guide pin 611 matched with the inclined push-pull groove 532 on the auxiliary tongue component, the lock tongue push plate 12 is provided with the top and bottom rod guide pin 15 matched with the inclined slide groove 612 of the top and bottom rod, and the synchronous extension of the lock tongue and the auxiliary tongue is realized.

The bolt 11 and the latch bolt 21 are extended or retracted without linkage through a clutch mechanism. That is, when the latch 11 is opened or closed, the latch bolt 21 does not act; since the latch bolt 21 is normally in the extended state, when the latch bolt 21 is retracted or released, the latch bolt 11 will not move independently.

As the preferred embodiment of the invention, the lock runs more stably, and the lock is also provided with a limiting part and a stabilizing part, wherein the limiting part comprises a limiting shifting block 71, a limiting sheet and a limiting torsion spring; the stabilizing component comprises a shifting shaft gear and a shifting shaft toothed plate, the shifting shaft gear, the limiting pieces and the transmission gear are coaxially sleeved and linked, the shifting shaft gear is meshed with the gear of the shifting shaft toothed plate, and the limiting shifting block is fixed in a limiting mode through the limiting pieces.

As a preferable scheme of the embodiment, the radian of the guide groove is 160-200 degrees, and the depth of the guide groove is 2-8 mm;

as a preferable scheme of the embodiment, the distance between the rotation center of the thumb wheel and the center of the circular arc where the guide groove is located is 1-38 mm.

Example 3

In the embodiment, the ridge rail is fixedly arranged on the guide groove plate through the guide, and the radian of the ridge rail is 160-200 degrees; the slider is provided with a groove matched with the ridge rail, and other components and installation and connection modes are the same as those of the embodiment 2.

The embodiment of the application provides a gear lock with spring bolt, latch bolt, vice spring bolt, world pole, in practical application, can make the gear lock that does not contain vice spring bolt and world pole according to actual need, uses in indoor door installation.

In addition, this embodiment chooses the key drive lock core that has the thumb wheel to stir the slider and unblank or lock, and in practical application, also can choose motor drive thumb wheel to realize unblanking or locking.

Preferably, the door lock comprises any one of the clutch mechanisms described above. The lock is characterized by also comprising a lock tongue component, an oblique tongue component and a driving mechanism, wherein the slide block is stirred through a poking wheel, and an arc-shaped gear of the slide block is meshed with a gear of the driving component to open or close the lock tongue; when the shifting wheel rotates to open the lock tongue and then rotates continuously, the shifting wheel is separated from the sliding block, and the shifting wheel rotates to a certain degree to shift the latch bolt assembly to open the latch bolt.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (16)

1. A clutch mechanism comprises a sliding assembly and a shifting assembly, and is characterized in that the sliding assembly comprises a guide groove plate and a sliding block, wherein the guide groove plate is provided with an arc-shaped guide rail; the poking assembly is provided with a poking wheel, and the poking wheel is provided with poking teeth;

the poking assembly is positioned on the inner side of the guide rail, and the rotating center of the poking wheel is not coincident with the circle center of the arc where the guide rail is positioned;

when the shifting wheel rotates, the shifting teeth shift the sliding block to enable the sliding block to slide in the guide rail, and the shifting teeth are combined with the sliding block in a releasing mode.

2. The clutch mechanism as claimed in claim 1, wherein the distance between the rotation center of the thumb wheel and the center of the arc of the guide rail is 1-38 mm.

3. A clutch mechanism according to claim 1, characterised in that the dial assembly is a cylinder containing a dial wheel.

4. A clutch mechanism according to claim 1, characterized in that the toggle assembly is manually keyed or driven by a motor.

5. The clutch mechanism as claimed in claim 1, wherein the guide rail is a guide groove with a radian of 160 degrees and 200 degrees and a depth of 2-8 mm; the slider be equipped with 1 at least with the spacing post that the guide slot suited, spacing post is injectd the slider and is slided in the guide slot, spacing post is in can free rotation in the slider.

6. The clutch mechanism as claimed in claim 1, wherein the guide rail is a ridge rail with a radian of 160 degrees and 200 degrees and a height of 2-8 mm; the slider is provided with a groove matched with the ridge rail.

7. The clutch mechanism according to claim 1, wherein a tooth space is fixedly arranged on the sliding block, and when the dial wheel rotates, the dial teeth dial the side edge of the tooth space to enable the sliding block to slide in the sliding groove.

8. The clutch mechanism as claimed in claim 1, wherein the slider is of a circular arc structure, and the middle part of the inner circular arc surface is internally concave to form a U-shaped tooth socket.

9. The clutch mechanism as claimed in claim 1, wherein the sliding block has an arc structure, and the arc rack is fixedly disposed on the outer arc surface, and the arc degree is 120-260 degrees.

10. A clutch mechanism according to claim 1, characterized in that the guide slot plates are stamped and formed as stampings.

11. A door lock comprising a clutch mechanism according to any one of claims 1 to 9.

12. The door lock of claim 11, further comprising a bottom case, a latch bolt assembly and an upper cover plate, wherein the clutch mechanism, the latch bolt assembly and the latch bolt assembly are respectively installed in the bottom case of the lock body and are covered by the upper cover plate, and the door lock is characterized in that the latch bolt assembly comprises a latch bolt, a latch bolt push plate and a dragging plate, the dragging plate and the latch bolt push plate are rotatably connected through a push plate guide pin, and the clutch mechanism enables the latch bolt to extend or retract by pushing and pulling the dragging plate;

the latch bolt assembly comprises a handle shifting shaft, a handle shifting fork, a carrying pole and a latch bolt, the latch bolt is in a stretching state in a normal state through a compression spring, the handle shifting shaft is fixedly connected to the bottom shell, the handle shifting fork is rotatably connected with the handle shifting shaft, the carrying pole is connected to the spring bolt push plate in a sliding mode through a pin shaft, and the clutch mechanism shifts the carrying pole to push the handle shifting fork to rotate so as to drive the latch bolt to retract.

13. The door lock of claim 12, further comprising a drive gear, wherein the dragging plate is rotatably connected to the drive gear through a drive pin, and the drive gear rotates to drive the dragging plate to move, so that the latch bolt extends or retracts.

14. The door lock of claim 13, wherein the drive gear is automatically locked when the latch bolt is retracted.

15. The door lock of claim 13, further comprising a limiting component and a stabilizing component, wherein the limiting component comprises a limiting shifting block, a limiting sheet and a limiting torsion spring; the stabilizing assembly comprises a shifting shaft gear and a shifting shaft toothed plate, the shifting shaft gear, the limiting piece and the transmission gear are coaxially sleeved and linked, the shifting shaft gear is meshed with a gear of the shifting shaft toothed plate, and the limiting shifting block is fixed in a limiting mode through the limiting piece.

16. The door lock of any one of claims 12-15, further comprising an auxiliary bolt assembly and a top-bottom rod, wherein the top-bottom rod is fixedly provided with an auxiliary bolt guide pin matched with the inclined push-pull groove on the auxiliary bolt assembly, and the bolt push plate is provided with a top-bottom rod guide pin matched with the inclined slide groove of the top-bottom rod;

the lock tongue component drives the ground rod to move, and then drives the auxiliary lock tongue to extend or retract.

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