CN114658291B - Mechanical door lock - Google Patents

Abstract

The invention discloses a mechanical door lock, which comprises a lock body which can be arranged in a door body, a panel which is arranged on the outer wall of the door, a lock cylinder which is used for driving a lock tongue part to retract or pop out and is arranged in the lock body, wherein one end of the lock cylinder with a lock hole penetrates out of the outer wall of the panel, a handle component is arranged on the outer wall of the panel, and the mechanical door lock also comprises a protection component which is used for shielding and protecting the lock hole of the lock cylinder; the protection component comprises a covering plate which is arranged on the outer wall of a panel and can vertically slide, and the covering plate blocks and shields the lock hole of the lock cylinder in the initial state. According to the invention, after the door is locked, the covering plate moves upwards, and the lock hole on the lock cylinder is shielded and protected, so that the lock hole can be prevented from being damaged by human or external force when people are not at home, a certain protection effect is achieved, meanwhile, the hidden lock hole can also have a certain anti-theft function, and the entrance of dust in the lock hole and the loss of internal lubricating oil can also be prevented at ordinary times.

Description

Mechanical door lock

Technical Field

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

Background

Door locks, as the name implies, are devices used to lock a door to prevent others from opening the door. Door locks are classified into various types, and the requirements for door locks are different in each occasion, so that door locks can be classified into mechanical door locks and electronic door locks.

When the mechanical door lock locks or unlocks a door, a key is usually required to be inserted into the lock cylinder, and then the key is rotated to drive the lock cylinder to rotate, so that the lock tongue is controlled to retract and pop out, and the aim of locking or unlocking is fulfilled.

However, when the conventional mechanical door lock is used, the lock hole is exposed outside, so that the mechanical door lock is easily damaged by human or external force, the mechanical door lock is damaged, the service life of the mechanical door lock is shortened, and the applicability of the door lock is even affected when necessary.

Disclosure of Invention

The invention aims to provide a mechanical door lock, which is characterized in that after the door lock is closed, a covering plate moves upwards, and meanwhile, a lock hole in a lock cylinder is shielded and protected, so that the lock hole can be prevented from being damaged by human or external force when people are not at home, a certain protection effect is achieved, a certain anti-theft function can be achieved by hiding the lock hole, the entering of foreign dust in the lock hole and the loss of internal lubricating oil can be prevented at ordinary times, and the problems in the background technology are solved.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a mechanical door lock, includes the mountable at the internal lock body of door and installs the panel at a door outer wall, install in the lock body and be used for driving the lock tongue part and withdraw or the lock core that pops out, and the lock core has the one end of lockhole to wear out from the panel outer wall, the handle subassembly is installed to the panel outer wall, still including being used for sheltering from the protection component who protects to the lockhole of lock core.

The protection component comprises a covering plate which is arranged on the outer wall of a panel and can vertically slide, the locking hole of the lock cylinder is blocked and shielded under the initial state of the covering plate, and the locking hole of the lock cylinder can be exposed when the covering plate slides downwards.

Preferably, the inner chamber has been seted up to the inside of lock body, just the lock core runs through the inner chamber, is located the through-hole that runs through the panel is seted up to the inner chamber inner wall of lock core below, and slidable mounting has a slide bar in the through-hole, the inner wall that the inner chamber of lock body is close to the slide bar is fixed with the electro-magnet, the one end that the slide bar is close to the electro-magnet is fixed with the permanent magnet, the cover board is close to the outer wall of panel and has seted up the pole spout and the piece spout of mutual intercommunication in proper order by shallow to dark, the one end that the permanent magnet was kept away from to the slide bar penetrates in the pole spout and is fixed with the stopper, the recess that can supply the stopper card to go into is seted up to the inner wall of pole spout, just the diameter of stopper is greater than the width of pole spout, the stopper can slide at the inner wall of piece spout, still including being used for making the trigger assembly of electromagnetism magnetic pole transform.

Preferably, the inside vertical slidable mounting of inner chamber inner wall who offers of lock body has the lifter plate, the shifting chute that supplies the lock core to pass is seted up to the outer wall in the middle of the lifter plate, the outer wall that the lock core is close to the shifting chute is fixed with can be along with the lock core pivoted second gear, the bottom inner wall of shifting chute is fixed with can block into the spacing voussoir between the second gear tooth, the outer wall that the slide bar is close to the lifter plate is fixed with the fixed block, it has elastic telescopic rod to articulate between the bottom of lifter plate and the fixed block, and works as can drive the lifter plate lapse through elastic telescopic rod when the slide bar slides outward to the cavity.

Preferably, an installation seat is fixed at the top of the inner cavity of the lock body above the lock cylinder, a swing plate is rotatably installed on the outer wall of the installation seat, a torsion spring capable of enabling the swing plate to rotate upwards is installed between the swing plate and the installation seat, the handle assembly comprises an installation head fixed on the panel and close to the outer wall of the installation seat, a plug-in connector is connected to the outer wall of the installation head in an inserted mode, a door handle is fixed on the outer wall of the plug-in connector, a through hole sequentially penetrating through the panel, the installation head and the plug-in connector is formed in the inner wall of the inner cavity of the lock body close to the installation seat, a false lock shaft is installed in the through hole and is in limited rotation connection with the plug-in connector, a transmission assembly is installed at one end of the false lock shaft close to the installation seat, when the plug-in connector is pulled outwards to be separated from the installation head, the plug-in rotation can drive the false lock shaft to rotate, and the swing plate is driven by the transmission assembly to rotate and abut against the lifting plate to move downwards, so that the limit wedge block is separated from the second gear.

Preferably, the drive assembly is including seting up at the inside cavity of false lock axle, the inner wall slidable mounting of cavity has the sliding block, the outer wall that the panel was kept away from to the sliding block is fixed with the locking axle, the sliding block is close to and installs the cover between the outer wall of locking axle and the inner wall of cavity and establish at the epaxial first spring of locking, the one end that the panel was kept away from to the locking axle runs through the outer wall of false lock axle, and with sliding connection of running through of false lock axle, the logical groove that can supply the locking axle to pass is all seted up in the rotation axle center department of swing board and mount pad, just the draw-in groove has been seted up to the logical inslot wall of swing board, the outer wall that the swing board was passed to the locking axle is fixed with first gear, works as false lock axle drives when locking axle moves outward to the lock and can make first gear tooth card go into in the draw-in groove on the swing board.

Preferably, the lock body has been seted up near the inner chamber inner wall of locking axle one end and has been locked the groove, the outer wall that the locking axle is close to the locking groove is fixed with the locking piece, works as the locking axle can make the locking piece also stretch into the locking inslot when stretching into the locking inslot, just can make the locking piece card go into the last terminal inslot in locking groove under the spring action of first spring after the appointed angle of rotation of locking axle, spacing spout has been seted up to the inner wall of bayonet joint, the outer wall of false lock axle is fixed with spacing slider, spacing slider slidable mounting is at the inner wall of spacing spout, spacing slider's turned angle is the same with the turned angle of locking piece, false lock axle is close to the one end of bayonet joint and has been seted up false lockhole, and can push against the sliding block and slide along the cavity inner wall after the key inserts false lockhole.

Preferably, the trigger component comprises a fingerprint identification part installed on the outer wall of the covering plate, and when the fingerprint identification part senses a correct fingerprint, the like poles of the electromagnet and the permanent magnet are controlled to repel through an electric signal.

Preferably, when the electromagnet is adsorbed to the permanent magnet, the elastic telescopic rod is in a vertical state, and the elastic telescopic rod is in a longest extension state.

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

1. according to the invention, through the matching of the structures, when a master is not at home, the covering plate is moved upwards after the door is locked, and the lock hole on the lock cylinder is shielded and protected, so that the lock hole can be prevented from being damaged by human or external force when the master is not at home, a certain protection effect is achieved, a certain anti-theft function can be achieved by hiding the lock hole, and the entrance of foreign dust in the lock hole and the loss of internal lubricating oil can be prevented at ordinary times.

2. According to the invention, through the matching of the structures, if the covering plate is artificially damaged by an external force, in order to expose the true lock hole, a destroyer can forcibly move the covering plate downwards, the sliding rod can be broken at the moment, and finally the true lock hole is exposed, and at the moment, if the destroyer continues to pick the lock on the lock core, the lock core cannot rotate due to the locking effect of the limiting wedge block on the second gear, so that the thief can be prevented from opening the door, and a certain anti-theft effect is achieved.

3. According to the invention, through the matching of the structures, when a user returns, the user unlocks the locking shaft, then the door handle can be pulled outwards, and the plug connector installed on the door handle is pulled down from the installation head, at the moment, the plug connector has no limiting effect of the installation head, so that when the door handle is rotated, the swinging plate is driven to swing downwards due to the embedding between the clamping groove and the teeth, so that the swinging plate is propped against the lifting plate to move downwards, the lock cylinder is unlocked, then the user can open the door through the key, therefore, a master can be prevented from being locked outside the door after returning home, long waiting time is avoided, the master can be enabled to look over in a room in advance, the anti-theft effect is achieved, and meanwhile, the master can be prevented from being locked outside the door for a long time to wait for master change of the lock.

Drawings

FIG. 1 is a front side perspective view of the present invention;

FIG. 2 is a schematic structural diagram of a front view of the present invention;

FIG. 3 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;

FIG. 4 is a schematic perspective view of the FIG. 3 view of the present invention;

FIG. 5 is an enlarged view of the structure of FIG. 4 at B;

FIG. 6 is a schematic view of the present invention taken along line C-C of FIG. 3;

FIG. 7 is a schematic cross-sectional perspective view of the lock body of the present invention;

FIG. 8 is an exploded perspective view of the present invention;

FIG. 9 is a schematic cross-sectional view of an exploded perspective view of the present invention;

FIG. 10 is a schematic sectional view of the door handle according to the present invention;

fig. 11 is a schematic structural view of the cover plate of the present invention in front view after it has been moved downward.

In the figure: 1. a panel; 2. a lock body; 3. covering the plate; 4. a fingerprint recognition section; 5. a mounting head; 6. a plug-in connector; 7. a false lock shaft; 8. a door handle; 9. a slider; 10. a locking shaft; 11. a cavity; 12. a first spring; 13. a first gear; 14. a lifting plate; 15. a lock cylinder; 16. a permanent magnet; 17. an electromagnet; 18. a slide bar; 19. a rod chute; 20. a limiting block; 21. a block chute; 22. an elastic telescopic rod; 23. limiting a wedge block; 24. a second gear; 25. a mounting seat; 26. a swing plate; 27. a locking block; 28. a locking groove; 29. a limiting slide block; 30. a limiting chute; 31. and (5) false locking hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 11, the present invention provides a technical solution: the utility model provides a mechanical door lock, includes that the mountable is at internal lock body 2 of door and install panel 1 at a door outer wall, installs in the lock body 2 and is used for driving the lock core 15 that the spring bolt part withdraws or pop out, and the one end that lock core 15 has the lockhole is worn out from 1 outer wall of panel, and the handle subassembly is installed to 1 outer wall of panel, still includes the protection component that is used for sheltering from the protection to the lockhole of lock core 15.

The protection component comprises a covering plate 3 which is arranged on the outer wall of a panel 1 and can vertically slide, the locking hole of the lock cylinder 15 is blocked and shielded under the initial state of the covering plate 3, and the locking hole of the lock cylinder 15 can be exposed when the covering plate 3 slides downwards.

In the above embodiment, when the owner is not at home, close the lock door after, will cover board 3 and upwards remove, shelter from the protection with the lockhole on the lock core 15 simultaneously, the lockhole can prevent that the people from suffering artificial or external force's destruction when not at home, plays certain guard action, hides the lockhole simultaneously and can also play certain theftproof function, still can prevent in the lockhole dust entering and the loss of inside lubricating oil at ordinary times.

Further, the inner chamber has been seted up to the inside of lock body 2, and lock core 15 runs through the inner chamber, the through-hole that runs through panel 1 has been seted up to the inner chamber inner wall that is located lock core 15 below, and slidable mounting has slide bar 18 in the through-hole, the inner wall that the inner chamber of lock body 2 is close to slide bar 18 is fixed with electro-magnet 17, slide bar 18 is fixed with permanent magnet 16 near the one end of electro-magnet 17, cover plate 3 and be close to panel 1's outer wall and set gradually the pole spout 19 and the piece spout 21 that communicate each other by shallow to dark, slide bar 18 is kept away from permanent magnet 16's one end and is penetrated in pole spout 19 and is fixed with stopper 20, the recess that can supply stopper 20 card to go into is seted up to the inner wall of pole spout 19, and stopper 20's diameter is greater than the width of pole spout 19, stopper 20 can slide at the inner wall of piece spout 21, still including the trigger assembly that is used for making electro-magnet 17 magnetic pole transform.

In the above embodiment, the masking plate 3 is further limited to prevent other people from moving the masking plate 3 at will, referring to fig. 3 and 4, when a user opens the door, the magnetic poles of the electromagnet 17 are changed by the trigger assembly, so that the electromagnet 17 and the permanent magnet 16 repel each other, under the action of the repulsive force, the permanent magnet 16 pushes the sliding rod 18 to slide outward of the panel 1, and the stopper 20 is disengaged from the groove on the inner wall of the rod chute 19, at this time, the masking plate 3 is unlocked, then the masking plate 3 is moved downward, at this time, the stopper 20 moves along the block chute 21, and at the same time, the sliding rod 18 slides along the inner wall of the rod chute 19, and then until the masking plate 3 exposes the lock hole on the lock cylinder 15, and then the user inserts the key into the lock hole to open the lock.

After the key is pulled out, the covering plate 3 is moved upwards to reset, the triggering assembly can change the magnetic pole of the electromagnet 17 again, the electromagnet 17 and the permanent magnet 16 are oppositely attracted, then the electromagnet 17 adsorbs the permanent magnet 16, the sliding rod 18 moves towards the lock body 2 at the moment, the limiting block 20 is clamped into the groove in the inner wall of the rod sliding groove 19 again, the covering plate 3 is locked again, and therefore irrelevant people can be prevented from moving the covering plate 3 at will.

Further, the vertical slidable mounting of the inside inner chamber inner wall that offers of lock body 2 has lifter plate 14, the shifting chute that supplies lock core 15 to pass is seted up to the outer wall in the middle of the lifter plate 14, the outer wall that lock core 15 is close to the shifting chute is fixed with second gear 24 that can rotate along with lock core 15, the bottom inner wall in shifting chute is fixed with the spacing voussoir 23 that can block in between the 24 teeth of second gear, the outer wall that slide bar 18 is close to lifter plate 14 is fixed with the fixed block, it has elastic telescopic rod 22 to articulate between the bottom of lifter plate 14 and the fixed block, and can drive lifter plate 14 through elastic telescopic rod 22 and slide downwards when slide bar 18 slides to the cavity outward.

In the above embodiment, it can be known from the above that, when the sliding rod 18 moves towards the outside of the lock body 2, the covering plate 3 is unlocked through structural cooperation, and the true lock hole is exposed, and at the same time, the sliding rod 18 drives the lifting plate 14 to slide downwards through the elastic telescopic rod 22, and the limit wedge 23 is disengaged from the teeth of the second gear 24, so as to unlock the lock cylinder 15, so that the key can rotate to open the door after being inserted into the true lock hole.

On the contrary, when the sliding rod 18 moves into the lock body 2, the reset mask plate 3 is locked again through structural cooperation, and simultaneously the lifting plate 14 is driven to slide upwards under the connecting action of the elastic telescopic rod 22, so that the limiting wedge block 23 is clamped between the teeth of the second gear 24 again to lock the second gear 24, and meanwhile, the lock core 15 can also be limited and locked.

The purpose of doing so is, if when the cover plate 3 suffers the artificial destruction of external force, in order to expose true lockhole, so the person of destroying can cover plate 3 and move by force downwards, slide bar 18 can consequently fracture this moment, finally exposes true lockhole, and at this moment, if the person of destroying continues to pick the lock to lock core 15, because spacing voussoir 23 is to the locking effect of second gear 24, so lock core 15 can't rotate to can prevent that the person of stealing from opening the door, and then played certain theftproof effect.

Meanwhile, in the embodiment, an alarm and a pressure sensor can be further installed on the covering plate 3, and when the covering plate 3 is damaged by external force, the alarm can be started to alarm through the pressure sensor for warning lawless persons.

Further, an installation seat 25 is fixed at the inner top of an inner cavity of the lock body 2 above the lock cylinder 15, a swing plate 26 is rotatably installed on the outer wall of the installation seat 25, a torsion spring capable of enabling the swing plate 26 to rotate upwards is installed between the swing plate 26 and the installation seat 25, the handle component comprises an installation head 5 fixed on the panel 1 and close to the outer wall of the installation seat 25, a plug-in connector 6 is inserted into the outer wall of the installation head 5, a door handle 8 is fixed on the outer wall of the plug-in connector 6, through holes sequentially penetrating through the panel 1, the installation head 5 and the plug-in connector 6 are formed in the inner cavity of the lock body 2 and close to the inner wall of the installation seat 25, a false lock shaft 7 is installed in each through hole, the false lock shaft 7 is connected with the plug-in a limiting and rotating mode, a transmission component is installed at one end, close to the installation seat 25, the plug-in connector 6 is pulled outwards to be separated from the installation head 5, then the false lock shaft 7 is driven to rotate by rotating the swing plate 26, and the lifting plate 14 is driven by the transmission component to move downwards, and the limiting wedge block 23 is separated from the second gear 24.

In the above embodiment, it is understood that, when the masking plate 3 is broken and the slide rod 18 is broken, the second gear 24 is engaged with the stopper wedge 23, and therefore, the door cannot be opened directly by the key when the user returns.

At this time, the user can pull the door handle 8 outward while pulling the socket 6 mounted thereon away from the mounting head 5, and at this time, the socket 6 does not have a limit function of the mounting head 5, so that the door handle 8 can be rotated.

Meanwhile, when the door handle 8 is pulled outwards, the false lock shaft 7 is pulled out together, then the door handle 8 is rotated, the door handle 8 drives the plug 6 and the false lock shaft 7 to rotate, then the swing plate 26 is driven to rotate under the action of the transmission assembly and is propped against the lifting plate 14 to move downwards, the limiting wedge block 23 is separated from the second gear 24, the lock cylinder 15 is unlocked, and meanwhile, the elastic telescopic rod 22 is propped against to elastically retract when the lifting plate 14 moves downwards.

Then the user can open the door earlier through inserting the key in the keyhole, then let the workman maintain or change can, can prevent like this that owner from going home the back locked outside the door, avoided long-time latency, can make owner look over in the advanced room, so not only play the effect of theftproof, can also avoid simultaneously owner by the master of long-time lock outside the door waiting to change the lock.

Further, the transmission assembly comprises a cavity 11 arranged inside the false lock shaft 7, a sliding block 9 is slidably arranged on the inner wall of the cavity 11, a locking shaft 10 is fixed on the outer wall of the sliding block 9 far away from the panel 1, a first spring 12 sleeved on the locking shaft 10 is installed between the outer wall of the sliding block 9 close to the locking shaft 10 and the inner wall of the cavity 11, one end, far away from the panel 1, of the locking shaft 10 penetrates through the outer wall of the false lock shaft 7 and is slidably connected with the penetrating part of the false lock shaft 7, through grooves for the locking shaft 10 to penetrate through are formed in the rotating shaft centers of the swinging plate 26 and the mounting seat 25, clamping grooves are formed in the inner walls of the through grooves of the swinging plate 26, a first gear 13 is fixed on the outer wall of the swinging plate 26 for the locking shaft 10 to penetrate through, and teeth of the first gear 13 can be clamped into the clamping grooves in the swinging plate 26 when the false lock shaft 7 drives the locking shaft 10 to move outwards of the lock body 2.

In the above embodiment, referring to fig. 4 and 5, it can be seen that when the false lock shaft 7 is pulled and pulled to lock the door handle 8, the first gear 13 fixed thereon is driven to be clamped into the clamping groove in the through groove of the swing plate 26, then when the door handle 8 is rotated, the false lock shaft 7 and the first gear 13 are driven to rotate, and then the swing plate 26 is driven to swing downwards due to the engagement between the clamping groove and the teeth, so as to move downwards against the lifting plate 14, and the lock of the key cylinder 15 is released.

Then after the door is opened, the door handle 8 is reset and moved, at the same time, the first gear 13 is also separated from the through groove of the swing plate 26, at this time, the swing plate 26 swings upwards to reset under the action of the torsion spring, and the subsequent lifting plate 14 is prevented from being influenced.

Further, the inner chamber inner wall that lock body 2 is close to locking axle 10 one end has seted up locking groove 28, the outer wall that locking axle 10 is close to locking groove 28 is fixed with locking block 27, can make locking block 27 also stretch into locking groove 28 when locking axle 10 stretches into locking groove 28 in, and locking axle 10 rotates and to make locking block 27 block card go into locking groove 28 final end inslot under the spring action of first spring 12 after the appointed angle, spacing spout 30 has been seted up to the inner wall of bayonet joint 6, the outer wall of false lock axle 7 is fixed with spacing slider 29, spacing slider 29 slidable mounting is at the inner wall of spacing spout 30, the turned angle of spacing slider 29 is the same with the turned angle of locking block 27, false 31 has been seted up to the one end that false lock axle 7 is close to bayonet joint 6, and can push up slider 9 and slide along cavity 11 inner wall after the key inserts in the false lockhole 31.

In the above embodiment, since the door handle 8 can be pulled out, in order to prevent another person from pulling out the door handle 8 at will, it is necessary to lock and limit the door handle 8.

Referring to fig. 4 and 5, in a normal state, the locking block 27 is inserted into the locking groove 28, and the door handle 8 is prevented from being pulled out at will.

When door handle 8 needs to be pulled out, insert the key in the false lock hole 31, then push against sliding block 9 and slide along the inner wall of cavity 11, drive locking shaft 10 to remove simultaneously, first spring 12 compresses, and make locking block 27 shift out from the terminal inslot of locking groove 28, locking block 27 can rotate along locking groove 28 this moment, this moment through rotating the key, then the key drives false lock shaft 7, sliding block 9 and locking shaft 10 rotate together, make locking block 27 slide along locking groove 28, until sliding to can break away from the corner of locking groove 28, spacing slider 29 also can press the inner wall of spacing spout 30 to slide simultaneously, locking groove 28 cancels the locking effect to locking block 27 this moment, make locking shaft 10 can move along axial direction.

At this time, the locking shaft 10 can be pulled out together by pulling the door handle 8, and then when the door handle 8 is rotated, since the limit slider 29 has been rotated to the end of the limit chute 30, the limit chute 30 drives the limit slider 29 to rotate, so that the locking shaft 10 rotates.

Therefore, the door handle 8 can be prevented from being pulled out by other people at will by locking and limiting the locking shaft 10, the internal structure of the false lock hole 31 is the same as that of a real lock hole, and only the same key can be inserted into the false lock hole 31, so that the anti-theft effect is further improved.

Meanwhile, as the true lock hole is shielded and protected, the leakage of the false lock hole 31 can also play a certain puzzlement role for thieves, and the door cannot be opened no matter how the false lock hole is damaged or pried.

Therefore, the double anti-theft effect can be achieved through the double protection effect, and if only the covering plate 3 is damaged, the owner can open the door in another mode, so that the waiting time is saved while the anti-theft effect is achieved.

Further, the trigger assembly comprises a fingerprint identification part 4 installed on the outer wall of the mask plate 3, and when the fingerprint identification part 4 senses a correct fingerprint, the like poles of the electromagnet 17 and the permanent magnet 16 are controlled to repel each other through an electric signal.

In the above embodiment, the fingerprint identification part 4 can identify the fingerprint of the owner, and when the fingerprint identification part 4 senses the correct fingerprint, the like poles of the electromagnet 17 and the permanent magnet 16 are controlled to repel each other through the electric signal, so that the covering plate 3 is unlocked, and the owner can normally open the door.

If the masking plate 3 is broken, the fingerprint recognition unit 4 is also broken, so that the electromagnet 17 is always attracted to the permanent magnet 16, thereby enhancing the locking effect.

Further, when the electromagnet 17 is attracted to the permanent magnet 16, the elastic expansion link 22 is in the vertical state, and the elastic expansion link 22 is in the longest extension state.

In the above embodiment, it can be seen that, since the elastic telescopic rod 22 is in the longest extension state, when the sliding rod 18 moves, the lifting plate 14 is driven by the elastic telescopic rod 22 to move downward, so that it can be avoided that the lifting plate 14 does not move downward due to the reason of elastic extension, and the movement of the lifting plate 14 is ensured, and in the vertical state, when the swinging plate 26 moves downward against the lifting plate 14, the elastic telescopic rod 22 does not generate a horizontal force on the sliding rod 18 while contracting, so that the permanent magnet 16 and the electromagnet 17 can be avoided from being detached from the adsorption.

The working principle is as follows: when the mechanical door lock is used, under a normal state, an owner can identify the fingerprint of the owner through the fingerprint identification part 4, and when the fingerprint identification part 4 senses the correct fingerprint, homopolar repulsion between the electromagnet 17 and the permanent magnet 16 is controlled through an electric signal, so that locking of the covering plate 3 is released, and the owner can normally open the door.

When the thief steals, through the confusion of false lockhole, no matter how destroy or prize false lockhole like this and can not open the door, and if the thief has found that cover board 3 shelters from the true lockhole, in order to expose true lockhole, so the thief destroys the board 3 back of moving downwards by force with the violence destruction, slide bar 18 can consequently break this moment, finally expose true lockhole, at this moment, if the destroyer continues when prizing the lock to lock core 15, because spacing voussoir 23 is to the locking action of second gear 24, so lock core 15 can't rotate, thereby can prevent that the thief from opening the door, and then certain theftproof effect has been played.

The standard parts used in the present embodiment may be purchased directly from the market, and the non-standard structural components described in the specification and drawings may be obtained by processing without any doubt according to the common general knowledge in the art, and the connection manner of the respective parts is by the conventional means developed in the art, and the machines, parts and equipment are of the conventional type in the art, so that the detailed description thereof is omitted.

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

Claims (4)

1. The utility model provides a mechanical door lock, includes lock body (2) of mountable in the door body and installs panel (1) at a outer wall, install lock core (15) that are used for driving the spring bolt part to withdraw or pop out in lock body (2), and lock core (15) have one end of lockhole to wear out from panel (1) outer wall, panel (1) outer wall is installed handle assembly, its characterized in that: the lock core is characterized by also comprising a protection component for shielding and protecting a lock hole of the lock core (15);

the protective assembly comprises a covering plate (3) which is arranged on the outer wall of the panel (1) and can vertically slide, the covering plate (3) blocks and shields the lock hole of the lock cylinder (15) in an initial state, and the lock hole of the lock cylinder (15) can be exposed when the covering plate (3) slides downwards;

the inner cavity is formed in the lock body (2), the lock cylinder (15) penetrates through the inner cavity, a through hole penetrating through the panel (1) is formed in the inner wall of the inner cavity below the lock cylinder (15), a sliding rod (18) is slidably mounted in the through hole, an electromagnet (17) is fixed on the inner wall, close to the sliding rod (18), of the inner cavity of the lock body (2), a permanent magnet (16) is fixed at one end, close to the electromagnet (17), of the sliding rod (18), a rod sliding groove (19) and a block sliding groove (21) which are communicated with each other are sequentially formed in the outer wall, close to the panel (1), of the cover plate (3), one end, far away from the permanent magnet (16), of the sliding rod (18) penetrates into the rod sliding groove (19) and is fixed with a limiting block (20), a groove for the limiting block (20) to be clamped into is formed in the inner wall of the rod sliding groove (19), the diameter of the limiting block (20) is larger than the width of the rod sliding groove (19), the limiting block (20) can slide on the inner wall of the block sliding groove (21), and a trigger assembly for changing magnetic poles of the electromagnet (17) is further included;

the inner cavity inner wall of the lock body (2) is vertically and slidably provided with a lifting plate (14), the outer wall in the middle of the lifting plate (14) is provided with a moving groove for the lock cylinder (15) to pass through, the outer wall of the lock cylinder (15) close to the moving groove is fixed with a second gear (24) which can rotate along with the lock cylinder (15), the inner wall of the bottom of the moving groove is fixed with a limiting wedge block (23) which can be clamped between teeth of the second gear (24), the outer wall of the sliding rod (18) close to the lifting plate (14) is fixed with a fixed block, an elastic telescopic rod (22) is hinged between the bottom of the lifting plate (14) and the fixed block, and when the sliding rod (18) slides outwards from the cavity, the elastic telescopic rod (22) drives the lifting plate (14) to slide downwards;

a mounting seat (25) is fixed at the inner top of the inner cavity of the lock body (2) above the lock core (15), the outer wall of the mounting seat (25) is rotatably provided with a swinging plate (26), a torsion spring which can enable the swinging plate (26) to rotate upwards is arranged between the swinging plate (26) and the mounting seat (25), the handle component comprises a mounting head (5) which is fixed on the panel (1) and close to the outer wall of the mounting seat (25), the outer wall of the mounting head (5) is inserted with a plug-in connector (6), a door handle (8) is fixed on the outer wall of the plug-in connector (6), the inner wall of the inner cavity of the lock body (2) close to the mounting seat (25) is provided with a through hole which sequentially penetrates through the panel (1), the mounting head (5) and the plug connector (6), a false lock shaft (7) is arranged in the through hole, the false lock shaft (7) is connected with the plug connector (6) in a limiting and rotating way, one end of the false lock shaft (7) close to the mounting seat (25) is provided with a transmission component, when the plug connector (6) is pulled outwards to be separated from the mounting head (5), then the false lock shaft (7) can be driven to rotate by rotating the plug-in connector (6), the transmission component drives the swinging plate (26) to rotate and support the lifting plate (14) to move downwards, so that the limiting wedge block (23) is disengaged from the second gear (24);

drive assembly is including offering cavity (11) inside false lock axle (7), the inner wall slidable mounting of cavity (11) has sliding block (9), the outer wall that panel (1) was kept away from in sliding block (9) is fixed with locking axle (10), install between the outer wall that sliding block (9) are close to locking axle (10) and the inner wall of cavity (11) and establish first spring (12) on locking axle (10), the outer wall that false lock axle (7) were run through to the one end that panel (1) was kept away from in locking axle (10), and with the department sliding connection that runs through of false lock axle (7), the logical groove that can supply locking axle (10) to pass is all seted up in the rotation axle center department of swing board (26) and mount pad (25), just the draw-in groove has been seted up to the logical inslot wall of swing board (26), the outer wall that locking axle (10) passed swing board (26) is fixed with first gear (13), works as false lock axle (7) drive locking axle (10) and can make swing tooth card inslot (26) on the lock body (2) when moving outward.

2. The mechanical door lock of claim 1, wherein: lock body (2) are close to the inner chamber inner wall of locking axle (10) one end and have seted up locking groove (28), the outer wall that locking axle (10) are close to locking groove (28) is fixed with locking piece (27), works as locking axle (10) can make locking piece (27) also stretch into locking groove (28) when stretching into locking groove (28), just can make locking piece (27) card go into locking groove (28) final terminal inslot under the spring action of first spring (12) after locking axle (10) rotates the specified angle, spacing spout (30) have been seted up to the inner wall of bayonet joint (6), the outer wall of false lock axle (7) is fixed with spacing slider (29), spacing slider (29) slidable mounting is at the inner wall of spacing spout (30), the turned angle of spacing slider (29) is the same with the turned angle of locking piece (27), false lock axle (7) are close to the one end of bayonet joint (6) and have seted up false lock hole (31), and can push up sliding block (9) along cavity (11) inner wall after inserting false lock hole (31) in.

3. The mechanical door lock of claim 2, wherein: trigger component is including installing fingerprint identification portion (4) at cover board (3) outer wall, when fingerprint identification portion (4) sense correct fingerprint can be through the homopolar repulsion between electric signal control electro-magnet (17) and permanent magnet (16).

4. The mechanical door lock of claim 3, wherein: when the electromagnet (17) and the permanent magnet (16) are adsorbed, the elastic telescopic rod (22) is in a vertical state, and the elastic telescopic rod (22) is in the longest extension state.

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