CN115288525A

CN115288525A - Electronic lock capable of being unlocked automatically

Info

Publication number: CN115288525A
Application number: CN202210716298.0A
Authority: CN
Inventors: 王壤; 韩文杰
Original assignee: Ningbo Wangtong Locks Co Ltd
Current assignee: Ningbo Wangtong Locks Co Ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2022-11-04
Anticipated expiration: 2042-06-23
Also published as: CN115288525B

Abstract

The invention discloses an electronic lock capable of automatically unlocking, which comprises: the locking unit is provided with a first sliding groove and a first locking piece; the first sliding piece is connected with the locking unit in a sliding mode, a sliding part is arranged on the first sliding piece, the sliding part is located in the first sliding groove and can slide along the first sliding groove, and the first sliding piece slides relative to the locking unit to drive the locking unit to rotate; an elastic pre-tightening assembly arranged between the locking unit and the first sliding piece; a drive assembly, comprising: and the second sliding part can slide towards or away from the first locking part, and a second locking part is arranged on the second sliding part. In this application, add first slider and elasticity pretension subassembly, after the rotation of locking unit was released, first slider slided and orders about the locking unit rotation under the effect of elasticity pretension subassembly, finally realizes automatic unblock.

Description

Electronic lock capable of being unlocked automatically

Technical Field

The invention relates to the technical field of locks, in particular to an electronic lock capable of being automatically unlocked.

Background

The existing electronic lock generally comprises an electronic control part and a mechanical control part, wherein the electronic control part is generally composed of modules such as fingerprint identification or digital code identification and the like and is used for unlocking the rotation of a lock cylinder; the mechanical control part comprises a lock cylinder, and the electronic control part can unlock by rotating the lock cylinder after unlocking.

For example, in an electronic door lock commonly used in life, firstly, a correct digital password or a command such as a fingerprint needs to be input, the door handle is rotated after the command is correct, so that the door can be opened, and the door handle drives a lock cylinder to rotate, so that the door can be opened. When the electronic control part is not unlocked, the door handle cannot drive the lock cylinder to rotate so as to realize unlocking; after a correct instruction is input, the door cannot be opened without turning the door handle. Therefore, the conventional electronic lock still needs manual mechanical unlocking after a correct instruction is input, and automatic unlocking cannot be realized. The electronic locks of other types need to input correct digital passwords or fingerprints and other instructions firstly, and then directly drive the lock cylinder to rotate through a motor and the like, so as to realize unlocking. That is to say, the rotation process of lock core still is driven through the motor, realizes unblock through electronic control, and fault rate and cost are higher. In summary, the existing electronic lock can not realize mechanical automatic unlocking.

In addition, a locking member is usually provided in the electronic lock to lock or unlock the rotation of the lock cylinder; however, the tool to lock inner space is less, and the driven distance of locking piece is limited, if directly through motor drive, ordinary motor is difficult to open and stop in the accurate control of short distance, leads to the driven distance of locking piece too big and break the lock core.

Disclosure of Invention

In view of the above disadvantages in the prior art, the technical problem to be solved by the present invention is to provide an electronic lock capable of automatic unlocking, which is used to solve the problems that the electronic lock in the prior art cannot realize automatic mechanical unlocking, the lock cylinder is damaged by collision, and the like.

The technical scheme adopted by the invention for solving the technical problem is an automatic unlocking electronic lock, which comprises the following steps:

an automatic unlocking assembly, comprising: the locking unit rotates to unlock or lock, and is provided with a first sliding groove and a first locking piece; the first sliding piece is connected with the locking unit in a sliding mode, a sliding part is arranged on the first sliding piece, the sliding part is located in the first sliding groove and can slide along the first sliding groove, and the first sliding piece slides relative to the locking unit to drive the locking unit to rotate; an elastic pretension assembly disposed between the locking unit and the first slider;

a drive assembly, comprising: the second sliding piece can slide towards or away from the first locking piece, a second locking piece is arranged on the second sliding piece, and the first locking piece is abutted to or separated from the second locking piece so as to lock or unlock the rotation of the locking unit; the second sliding piece is also provided with a rack, one end of the rack is provided with first gear teeth, and the other end of the rack is provided with second gear teeth; a drive worm engaged with the rack; the second sliding piece is provided with a first position and a second position, and the second sliding piece is switched between the first position and the second position by rotating the driving worm;

when the second sliding piece is located at the first position, the first locking piece abuts against the second locking piece, and the driving screw is meshed with the first gear teeth; when the second slider is in the second position, the first latch is disengaged from the second latch and the drive screw is engaged with the second gear teeth.

Furthermore, the locking unit comprises a locking sleeve which is arranged in a cylindrical shape, a lock cylinder for unlocking or locking is fixedly connected in the locking sleeve, and the first locking piece is arranged on the locking sleeve;

the first sliding groove is arranged on the peripheral wall of the locking sleeve and provided with an initial end and a tail end, the height of the first sliding groove is gradually reduced from the initial end to the tail end, and the first sliding groove is spirally arranged along the peripheral wall of the locking sleeve.

Further, locking cover upper end is equipped with opening and translation section, the translation section simultaneously with the opening with initial end intercommunication, just the top of initial end is equipped with the dog.

Further, the first slider is provided with two of the sliding portions, which include a first sliding column; the locking unit is provided with two first sliding grooves; each first sliding column can slide along one first sliding groove;

the elastic pre-tightening assembly comprises a pre-tightening spring, one end of the pre-tightening spring is abutted against the lock cylinder, and the other end of the pre-tightening spring is abutted against the sliding piece;

the locking sleeve is characterized by further comprising a limiting sleeve, and a second sliding groove is formed in the limiting sleeve and is axially arranged along the locking sleeve; and a second sliding column is arranged on the sliding part and can slide along the second sliding groove.

Further, the second sliding piece comprises a sliding sleeve which can slide towards or away from the locking unit, and the rack is arranged on the sliding sleeve;

the second locking piece is arranged in the sliding sleeve, and an elastic piece is further arranged between the second locking piece and the sliding sleeve.

Further, a baffle is arranged at one end, away from the first locking piece, of the second locking piece, and the baffle is slidably arranged in the sliding sleeve;

the elastic piece comprises a first spring and a second spring, one end of the first spring is abutted to one end of the sliding sleeve, one end of the second spring is abutted to the other end of the sliding sleeve, and the first spring is abutted to the baffle plate together with the second spring.

Further, the sliding device further comprises a limiting piece, and when the second sliding piece is located at the second position, the sliding sleeve abuts against the limiting piece;

the stopper includes: the limiting column is arranged on one side, away from the locking unit, of the sliding sleeve; and the third spring is sleeved on the limiting column, and one end of the third spring is abutted to or separated from the sliding sleeve.

The sliding sleeve further comprises a cover plate, a third sliding groove is formed in the cover plate, and the sliding sleeve can slide along the third sliding groove;

at least one notch is formed in the side wall of the third sliding groove, at least one protrusion is arranged on the sliding sleeve, and the protrusion penetrates through the notch to enable the sliding sleeve to enter or exit the third sliding groove; the limiting piece abuts against the sliding sleeve to limit the protrusion to penetrate through the notch.

Further, a reduction gear is arranged between the rack and the driving worm, and the reduction gear is meshed with the rack and the driving worm simultaneously;

a drive motor connected to the drive worm;

and the shell is used for fixing the automatic unlocking assembly and the driving assembly.

Further, the first lock member has a guide surface and an abutment surface that abuts against the second lock member, and the guide surface gradually increases in thickness from the guide surface toward the abutment surface.

Compared with the prior art, the invention at least has the following beneficial effects:

(1) The meshing of the driving worm and the rack is arranged, the driving worm rotates for a circle, the rack only moves for one pitch, and then the moving speed of the second locking piece is reduced. In the single unlocking process, because the moving distance of the rack is constant, the arrangement substantially enlarges the rotating angle of the driving worm in the single unlocking process, further reduces the requirement on the motor, and solves the problem that the common motor can not be accurately started and stopped in a small range.

(2) A rack is arranged, and when the first locking piece and the second locking piece are just abutted, the driving worm is meshed with the last tooth (first gear tooth) on the rack; at this moment, a certain clearance still exists between the tip of second locking piece and the locking cover lateral wall, even if the drive worm continues to rotate, can not make the second locking piece violently strike the lateral wall of locking cover on, after the slider continues to slide very little distance to the locking cover direction, first teeth of a cogwheel breaks away from with the drive worm, and the drive worm can't continue to drive the second locking piece and continue to slide, and then has avoided the striking of second locking piece to cause the damage of locking unit on the locking cover lateral wall.

(3) The elastic piece is arranged, when the second sliding piece is located at the first position, even if the second locking piece is abutted to the side wall of the locking sleeve, the worm is driven to continue to rotate and drive the sliding sleeve to continue to slide, meanwhile, the elastic piece is compressed, the second locking piece is kept abutted to the side wall of the locking sleeve, the locking unit cannot be damaged due to excessive force, and the buffering effect is achieved to protect the lock cylinder; the rack can be always kept in butt joint with the driving worm, the driving worm cannot drive the second locking piece to move when rotating forwards, and the rack can be meshed with the rack again and drive the second locking piece to return when rotating backwards.

(4) The limiting piece is arranged to abut against the sliding sleeve, so that the situation that the rack is disengaged from the driving worm due to the fact that the driving worm continues to rotate after being meshed with the second gear can be avoided.

(5) Offer guide face and butt face on the first locking piece, driving motor only need rotate the time reversal of a week at the lock core and can make first locking piece and second locking piece butt again, has reduced driving motor's requirement, need not its accurate control and opens and stop.

(6) The first sliding part and the elastic pre-tightening assembly are additionally arranged, after a correct command is input, the driving assembly drives the second locking part to return, the locking unit (lock cylinder) is released in rotation, the first sliding part slides relative to the locking unit under the action of the elastic pre-tightening assembly, the sliding part slides in the first sliding groove in the sliding process, the locking unit is driven to rotate, and finally the locking unit is controlled to rotate through mechanical parts to realize automatic unlocking.

(7) The opening and the translation section are communicated with the first sliding groove, so that the locking sleeve and the first sliding piece can be assembled conveniently.

(8) Set up translation section and dog, can avoid the sliding part to deviate from first spout, prevent that locking cover and first slider from breaking away from.

Drawings

FIG. 1 is a schematic diagram of an embodiment of an electronic lock;

FIG. 2 is a schematic view of the structure of FIG. 1 with the housing removed;

FIG. 3 is a schematic structural view of a drive assembly and a locking sleeve in an embodiment;

FIG. 4 is a schematic structural view of FIG. 3 with the cover plate removed;

FIG. 5 is a schematic structural view of a second sliding member according to the embodiment;

FIG. 6 is a schematic structural diagram of a cover plate in the embodiment;

FIG. 7 is a schematic structural view of an automatic unlocking assembly and a second slider in the embodiment;

FIG. 8 is a schematic structural view of a first slider and a locking unit in the embodiment;

FIG. 9 is a schematic structural view of a lock unit in the embodiment;

FIG. 10 is a schematic structural diagram of a first sliding member, a lock cylinder and a pre-tightening spring in the embodiment;

FIG. 11 is a schematic structural view of the position-limiting sleeve in the embodiment;

FIG. 12 is a schematic structural view of a locking sleeve in the embodiment;

in the figure:

100. a locking unit; 110. a locking sleeve; 111. a first chute; 111a, an initial end; 111b, end; 112. a first locking member; 112a, an abutting surface; 112b, a guide surface; 113. a translation section; 114. an opening; 115. a stopper; 120. a lock cylinder;

200. a first slider; 210. a first sliding column; 220. a limiting sleeve; 230. a second chute; 240. pre-tightening the spring;

300. a second slider; 310. a second lock; 311. a baffle plate; 320. a sliding sleeve; 321. a protrusion; 330. a first spring; 340. a second spring; 350. a rack; 351. a first gear tooth; 352. a second gear tooth;

400. a drive worm; 410. a drive motor;

500. a reduction gear;

600. a cover plate; 610. a third chute; 611. a notch;

700. a limiting member; 710. a third spring; 720. a limiting column;

800. a housing.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

Referring to fig. 1 to 12, the present invention discloses an electronic lock capable of being automatically unlocked, including:

an automatic unlocking assembly, comprising: a locking unit 100, wherein the locking unit 100 rotates to unlock or lock, and a first sliding groove 111 and a first locking piece 112 are arranged on the locking unit 100; a first sliding member 200 slidably connected to the locking unit 100, wherein a sliding portion is disposed on the first sliding member 200, the sliding portion is located in the first sliding slot 111 and can slide along the first sliding slot 111, and the first sliding member 200 slides relative to the locking unit 100 to drive the locking unit 100 to rotate; an elastic pretension assembly disposed between the locking unit 100 and the first slider 200;

a drive assembly, comprising: the second slider 300, the second slider 300 can slide towards or away from the first locking member 112, a second locking member 310 is disposed on the second slider 300, and the first locking member 112 and the second locking member 310 abut against or separate from each other to lock or unlock the rotation of the locking unit 100; the second sliding member 300 is further provided with a rack 350, one end of the rack 350 is provided with a first gear 351, and the other end is provided with a second gear 352; a driving worm 400 engaged with the rack 350; the second slider 300 has a first position and a second position, and the second slider 300 is switched between the first position and the second position by rotating the driving worm 400;

when the second slider 300 is in the first position, the first lock member 112 abuts against the second lock member 310, and the driving screw is engaged with the first gear 351; when the second slider 300 is in the second position, the first latch 112 is disengaged from the second latch 310 and the drive screw is engaged with the second gear teeth 352.

Specifically, the driving worm 400 rotates to drive the rack 350 to move, so that the sliding part slides towards or away from the locking unit 100, so that the first locking part 112 and the second locking part 310 abut against or separate from each other, and the lock cylinder 120 is unlocked and locked in rotation.

The engagement between the driving worm 400 and the rack 350 is arranged, the driving worm 400 rotates once, and the rack 350 moves by only one pitch, thereby reducing the moving speed of the second locking member 310. In the single unlocking process, because the moving distance of the rack 350 is constant, the arrangement substantially enlarges the rotating angle of the driving worm 400 in the single unlocking process, further reduces the requirement on the motor, and solves the problem that the common motor can not be accurately started and stopped in a small range.

It should be noted that, when the second slider 300 is located at the first position, if the motor does not stop rotating at the first position, but drives the driving worm 400 to continue rotating and drives the second locking member 310 to continue sliding, the second locking member 310 may hit the locking unit 100 and continuously exert a large force on the lock cylinder 120, which may easily cause damage to the locking unit 100.

In this regard, the present application provides that the rack 350 is configured such that when the first locking member 112 and the second locking member 310 are just abutted, the driving worm 400 is engaged with the last tooth (the first gear tooth 351) of the rack 350; at this time, a certain gap still exists between the end of the second locking member 310 and the side wall of the locking sleeve 110, even if the driving worm 400 continues to rotate, the second locking member 310 does not violently impact the side wall of the locking sleeve 110, and after the second slider 300 continues to slide toward the locking sleeve 110 for a very small distance, the first gear 351 is disengaged from the driving worm 400, the driving worm 400 cannot continue to drive the second locking member 310 to continue to slide, thereby preventing the second locking member 310 from impacting the side wall of the locking sleeve 110 to cause damage to the locking unit 100.

In the application, by additionally arranging the first sliding part 200 and the elastic pre-tightening component, after a correct command is input, the driving component drives the second locking part 310 to retreat, the rotation of the locking unit 100 (the lock cylinder 120) is released, the first sliding part 200 slides relative to the locking unit 100 under the action of the elastic pre-tightening component, and the sliding part slides in the first sliding groove 111 in the sliding process, so that the locking unit 100 is driven to rotate, and finally, the locking unit 100 is controlled to rotate through mechanical parts to realize automatic unlocking.

Specifically, compared with an unlocking mode that the motor drives the locking unit 100 to rotate, the unlocking mode omits a motor for driving the locking unit 100 to rotate, a chip for controlling the motor to start and stop, and a transmission component between the motor and the locking unit 100, so that the cost is saved, and the failure rate attached to the electronic equipment is avoided. Compared with a manual door handle unlocking mode, the door handle unlocking method has the advantages that the elastic pre-tightening assembly releases elastic potential energy after the first locking piece 112 and the second locking piece 310 are separated, the sliding piece is driven to slide, the locking unit 100 is driven to rotate to complete unlocking, and automatic unlocking after an instruction is input can be achieved.

Further, the locking unit 100 includes a locking sleeve 110 disposed in a cylindrical shape, a lock cylinder 120 for unlocking or locking is fixedly connected in the locking sleeve 110, and the first locking member 112 is disposed on the locking sleeve 110;

the first sliding groove 111 is disposed on the peripheral wall of the locking sleeve 110, the first sliding groove 111 has an initial end 111a and a terminal end 111b, the height of the first sliding groove 111 gradually decreases from the initial end 111a to the terminal end 111b, and the first sliding groove 111 is disposed spirally along the peripheral wall of the locking sleeve 110.

Specifically, the locking sleeve 110 is hollow, the lock cylinder 120 is disposed in the locking sleeve 110 and rotates with the rotation of the locking sleeve 110, and when the pre-tightening elastic component drives the first sliding element 200 to slide, the locking sleeve 110 can drive the lock cylinder 120 to rotate to achieve automatic unlocking.

Since the first sliding groove 111 rises spirally, the sliding of the sliding part in the first sliding groove 111 can be divided into the rotation of the locking sleeve 110 and the vertical sliding of the first slider 200, thereby unlocking.

Further, the locking sleeve 110 is provided at an upper end thereof with an opening 114 and a translational section 113, the translational section 113 is simultaneously communicated with the opening 114 and the initial end 111a, and a stopper 115 is disposed above the initial end 111 a.

The opening 114 and the translation section 113 are arranged to communicate with the first sliding slot 111, and when the locking sleeve 110 and the first sliding member 200 are assembled, the sliding portion can enter from the opening 114 and enter the first sliding slot 111 through the translation section 113, so as to facilitate the assembly.

First, the sliding part needs to horizontally move a certain distance through the translation section 113, and then vertically move a certain distance through the opening 114, so that the sliding part can be separated from the first sliding groove 111. Therefore, the provision of the translation section 113 can increase the difficulty of the sliding portion coming out of the first chute 111. The stopper 115 is disposed above the initial end 111a to prevent the sliding portion from directly coming off the first sliding groove 111 from above the initial end 111a, and further prevent the locking sleeve 110 from coming off the first slider 200.

Further, the first slider 200 is provided with two of the sliding portions including a first sliding column 210; two first sliding grooves 111 are formed in the locking unit 100; each of the first sliding posts 210 is slidable along one of the first sliding grooves 111;

the elastic pre-tightening assembly comprises a pre-tightening spring 240, one end of the pre-tightening spring 240 is abutted with the lock cylinder 120, and the other end of the pre-tightening spring is abutted with the sliding piece;

specifically, upon locking, the pre-tension spring 240 is compressed; when the rotation of the locking sleeve 110 is released, the pre-tightening spring 240 gradually expands and releases the elastic force, so as to drive the first sliding element 200 to slide upwards and drive the locking sleeve 110 to rotate, thereby realizing automatic unlocking.

The locking device further comprises a limiting sleeve 220, wherein a second sliding groove 230 is formed in the limiting sleeve 220 and is axially arranged along the locking sleeve 110; a second sliding column is disposed on the sliding member, and the second sliding column can slide along the second sliding groove 230.

The second sliding column is arranged to slide in the second sliding groove 230, and the second sliding groove 230 is axially arranged along the locking sleeve 110, so that the sliding direction of the first sliding member 200 is limited, and the first sliding member 200 is prevented from rotating when sliding and cannot drive the locking sleeve 110 to rotate.

Further, the second slider 300 includes a sliding sleeve 320, the sliding sleeve 320 can slide towards or away from the locking unit 100, and the rack 350 is disposed on the sliding sleeve 320;

the second locking member 310 is disposed in the sliding sleeve 320, and an elastic member is disposed between the second locking member 310 and the sliding sleeve 320.

The elastic member is disposed between the second locking member 310 and the sliding sleeve 320, which has two advantages:

first, when the second slider 300 is at the first position, even if the second locking member 310 abuts against the side wall of the locking sleeve 110, the driving worm 400 continues to rotate and drives the sliding sleeve 320 to continue to slide, and at the same time, the elastic member is compressed, the second locking member 310 keeps abutting against the side wall of the locking sleeve 110, so that the locking unit 100 is not damaged due to excessive force, and the buffering function is performed to protect the lock cylinder 120.

Secondly, it should be noted that, when the second sliding member 300 is located at the first position, the driving worm 400 is engaged with the first gear 351, and if the driving worm 400 is rotated continuously, the driving worm 400 is separated from the rack 350, and the driving worm 400 cannot drive the second locking member 310 to retract when rotating reversely.

Based on this, an elastic member is disposed in the sliding sleeve 320, the driving worm 400 rotates and drives the sliding sleeve 320 to move forward, and the elastic member is compressed during the process of moving forward the sliding sleeve 320, so that the sliding sleeve 320 has a tendency of retracting backwards. In this state, the driving worm 400 does not need to stop rotating, different gear teeth on the driving worm 400 continuously abut against and are separated from the tooth surface of the first gear tooth 351 along with the rotation of the driving worm 400, when the driving worm 400 rotates reversely, the first gear tooth 351 is meshed with the driving worm 400 again, and then other gear teeth are meshed with the driving worm 400 to drive the sliding sleeve 320 to retract.

Therefore, the elastic member can also make the rack 350 always abut against the driving worm 400, so that the driving worm 400 does not drive the second locking member 310 to move when rotating forward, and can re-engage with the rack 350 and drive the second locking member 310 to retreat when rotating backward.

That is to say, the second locking member 310 can still rotate after being locked by the driving worm 400 through the elastic member, and the motor is not required to be started or stopped accurately.

Further, one end of the second lock member 310 away from the first lock member 112 is provided with a baffle 311, and the baffle 311 is slidably disposed in the sliding sleeve 320;

the elastic member comprises a first spring 330 and a second spring 340, one end of the first spring 330 is abutted with one end of the sliding sleeve 320, one end of the second spring 340 is abutted with the other end of the sliding sleeve 320, and the first spring 330 and the second spring 340 are both abutted with the baffle 311.

Specifically, when the second slider 300 is in the first position, if the sliding sleeve 320 continues to move toward the locking unit 100, the second spring 340 will be compressed at the same time, so that the second locking member 310 will remain in abutment with the side wall of the locking sleeve 110, but will not damage the lock cylinder 120; when the motor rotates reversely, the second spring 340 releases the elastic force, so that the rack 350 is re-engaged with the driving worm 400, and the second locking member 310 is driven to retract. Meanwhile, the second spring 340 can also provide elastic force to make the second locking member 310 always abut against the first locking member 112, so as to enhance the locking strength.

It should be noted that, if the first spring 330 is not provided, at the moment of the motor reversing, the sliding sleeve 320 retracts backwards under the force of the meshing of the rack 350 and the elastic force released by the second spring 340, and at the same time, drives the second locking member 310 to retract, and the second locking member 310 and the first locking member 112 rub against each other, and the relative friction speed is too fast, which easily causes damage to the first locking member 112 and the second locking member 310.

Based on this, the first spring 330 is further provided, when the second locking member 310 retracts, the sliding force of the sliding sleeve 320 is not directly transmitted to the second locking member 310, but the first spring 330 is firstly compressed, so that the first spring 330 has certain elastic force, and the elastic force acts on the second locking member 310 to cause the second locking member 310 to retract slowly, thereby preventing the second locking member 310 from being damaged by a large force in a moment after the motor rotates reversely suddenly, and playing a role in buffering protection.

Further, a stopper 700 is further included, and when the second slider 300 is at the second position, the sliding sleeve 320 abuts against the stopper 700;

the limiting member 700 includes: the limiting column 720, the limiting column 720 is arranged on one side of the sliding sleeve 320 far away from the locking unit 100; and a third spring 710, which is sleeved on the position-limiting post 720, and one end of the third spring 710 is abutted against or separated from the sliding sleeve 320.

The middle position-limiting member 700 of the present application can provide two embodiments: firstly, a through hole is formed in the end of the sliding sleeve 320, the limiting column 720 extends into the through hole to play a guiding role along with the sliding of the sliding sleeve 320, and then the end of the sliding sleeve 320 abuts against the third spring 710 to achieve limiting; secondly, the length of the third spring 710 is greater than that of the position-limiting post 720, and along with the sliding of the sliding sleeve 320, the sliding sleeve 320 firstly pushes against the third spring 710 and compresses the third spring 710 until the end of the sliding sleeve 320 pushes against the position-limiting post 720, so as to realize the position limitation.

Further, the sliding device further comprises a cover plate 600, a third sliding groove 610 is formed in the cover plate 600, and the sliding sleeve 320 can slide along the third sliding groove 610;

at least one notch 611 is formed in the side wall of the third sliding groove 610, at least one protrusion 321 is formed on the sliding sleeve 320, and the protrusion 321 penetrates through the notch 611 to enable the sliding sleeve 320 to enter or exit the third sliding groove 610; the limiting member 700 abuts against the sliding sleeve 320 to limit the protrusion 321 from passing through the notch 611.

During initial assembly, the protrusion 321 needs to pass through the notch 611 to enable the sliding sleeve 320 to enter the third sliding slot 610, and then the limiting member 700 is installed, so that the limiting member 700 abuts against the sliding sleeve 320, the protrusion 321 on the sliding sleeve 320 cannot reach the position of the notch 611 and passes through the notch 611, and the sliding sleeve 320 is prevented from falling out of the third sliding slot 610.

Further, a reduction gear 500 disposed between the rack 350 and the driving worm 400, the reduction gear 500 simultaneously engaging with the rack 350 and the driving worm 400;

a driving motor 410 connected to the driving worm 400;

a housing 800 for securing the automatic unlocking assembly and the driving assembly.

Specifically, the reduction gear 500 is arranged, the driving worm 400 rotates to drive the reduction gear 500 to rotate, the rack 350 is driven to move after the reduction of the reduction gear 500, the reduction is realized, the rotation angle of the driving motor 410 in single unlocking is further increased, and the requirement on the driving motor 410 is reduced.

Further, the first lock member 112 has a guide surface 112b and an abutment surface 112a, the abutment surface 112a abuts against the second lock member 310, and the thickness of the guide surface 112b gradually increases from the guide surface 112b toward the abutment surface 112 a.

In the locked state, the abutment surface 112a abuts against the second lock member 310, and the rotation of the lock unit 100 is locked; when the second locking member 310 retracts, the abutting surface 112a is separated from the second locking member 310, and the locking unit 100 rotates to unlock the lock.

Further, after the first and

second lock members

112 and 310 are separated, the locking unit 100 is rotated and unlocked, and once the abutment surface 112a passes over the second lock member 310, the second lock member 310 moves forward and abuts against the side wall or guide surface 112b of the locking sleeve 110; with the rotation of the key cylinder 120, the second locking member 310 slides from the end with the smaller thickness into the guide surface 112b until the end with the larger thickness slides out from the guide surface 112b, and the abutment surface 112a abuts against the second locking member 310 again, so that the automatic locking is realized.

In this process, the driving motor 410 can rotate reversely after the second lock member 310 retracts, and the first lock member 112 and the second lock member 310 are locked again after the lock cylinder 120 rotates one circle. That is to say, the driving motor 410 only needs to rotate reversely within the time of one rotation of the lock cylinder 120, so that the requirement of the driving motor 410 is reduced, and the accurate control of starting and stopping of the driving motor is not needed.

It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions of the present invention as related to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of technical features indicated is indicative. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Claims

1. An automatically unlocking electronic lock, comprising:

a drive assembly, comprising: the second sliding part can slide towards or away from the first locking part, a second locking part is arranged on the second sliding part, and the first locking part is abutted to or separated from the second locking part so as to lock or unlock the rotation of the locking unit; the second sliding piece is also provided with a rack, one end of the rack is provided with first gear teeth, and the other end of the rack is provided with second gear teeth; a drive worm engaged with the rack; the second sliding piece is provided with a first position and a second position, and the second sliding piece is switched between the first position and the second position by rotating the driving worm;

when the second sliding piece is located at the first position, the first locking piece abuts against the second locking piece, and the driving screw is meshed with the first gear teeth; when the second slider is in the second position, the first lock is disengaged from the second lock, and the drive screw is engaged with the second gear teeth.

2. The electronic lock according to claim 1, wherein the locking unit comprises a locking sleeve disposed in a cylindrical shape, a lock cylinder for unlocking or locking is fixed in the locking sleeve, and the first locking member is disposed on the locking sleeve;

3. An automatically unlocking electronic lock according to claim 2, wherein the locking sleeve is provided at an upper end thereof with an opening and a translation section, the translation section is simultaneously communicated with the opening and the initial end, and a stopper is provided above the initial end.

4. An automatically unlocking electronic lock according to claim 2, wherein said first slider is provided with two said sliding portions, said sliding portions including a first sliding column; the locking unit is provided with two first sliding grooves; each first sliding column can slide along one first sliding groove;

5. An automatically unlocking electronic lock according to any one of claims 1 to 4, wherein said second slider comprises a sliding sleeve which is slidable towards or away from said locking unit, and said rack is provided on said sliding sleeve;

6. An automatically unlocking electronic lock according to claim 5, wherein the end of the second locking member remote from the first locking member is provided with a baffle which is slidably arranged in the sliding sleeve;

7. The electronic lock of claim 5, further comprising a stopper, wherein when the second sliding member is in the second position, the sliding sleeve abuts against the stopper;

8. The electronic lock of claim 7, further comprising a cover plate, wherein the cover plate is provided with a third sliding groove, and the sliding sleeve can slide along the third sliding groove;

9. An automatically unlocking electronic lock according to claim 1, wherein a reduction gear is provided between said rack and said driving worm, said reduction gear being engaged with both said rack and said driving worm;

the driving motor is connected with the driving worm;

10. The automatically-unlocking electronic lock according to claim 1, wherein the first lock member has a guide surface and an abutment surface which abuts against the second lock member, and a thickness of the guide surface gradually increases from the guide surface toward the abutment surface.