CN113250546B

CN113250546B - Lock capable of preventing violent unlocking

Info

Publication number: CN113250546B
Application number: CN202110652341.7A
Authority: CN
Inventors: 韩文杰; 王壤
Original assignee: Ningbo Wangtong Locks Co Ltd
Current assignee: Ningbo Wangtong Locks Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-07-22
Anticipated expiration: 2041-06-11
Also published as: CN113250546A

Abstract

The invention discloses a lock capable of preventing violent unlocking, which comprises an unlocking main body and a lock body, wherein a linkage block is movably arranged in the lock body, a lock tongue is arranged on the linkage block, and a driving mechanism is arranged in the lock body; the unlocking main body comprises a knob and a lock cylinder assembly, and the lock cylinder assembly is in transmission fit with the driving mechanism; the driving mechanism comprises a rotating sleeve and a connecting sleeve, and an electromagnetic lock rod assembly is arranged between the connecting sleeve and the rotating sleeve; a connecting ring is arranged on the connecting sleeve, a connecting column is arranged on the connecting ring and is in driving fit with the linkage block, a driving column is arranged on the rotating sleeve and is in driving fit with the connecting ring; an anti-violence clutch device is arranged between the lock core component and the knob. The invention has the following advantages and effects: a violent-force-preventing clutch device is arranged between the knob and the lock cylinder assembly, so that the locking effect is more stable and reliable, and the lock cylinder has higher safety and double protection effects; the cooperation is changeed and is overlapped with the components of a whole that can function independently setting between the adapter sleeve, and two kinds of modes unblock, and it is more convenient, nimble to use.

Description

Lock capable of preventing violent opening

Technical Field

The invention relates to the technical field of locks, in particular to a lock capable of preventing violent unlocking.

Background

The safe door lock generally comprises a common spring lock, a fingerprint lock and a coded lock, in order to improve the anti-theft performance, an electric lock is common, the electric lock is widely used in life of people, the electric lock generally comprises an electronic control module, and after the electronic control module is unlocked, a knob is rotated to unlock the electric lock.

The protective panel of current tool to lock generally including the panel and install the handle on the panel, moves the handle and then realizes unblanking through twisting, and the security is lower. When a lawbreaker opens a lock, a handle is usually twisted by violence, and a general electronic lock knob in the market at present needs to use a tool to twist violently because the lock is ensured to be destroyed violently, namely, under the condition that correct password authorization is not input, and in order to prevent the internal locking mechanism from being damaged to cause unlocking, a design of a rupture groove is used on the knob structure.

However, the above structure may cause the knob to be permanently damaged when violently opened, and the lock function needs to be restored by replacing the knob again, which may cause inconvenience in use for users and increase maintenance cost; on the other hand, the anti-breaking process is not easy to be mastered in manufacturing, the breaking force of the knob breaking groove is influenced by the factors of materials, die-casting processing and the like, and the knob breaking groove breaks when not reaching the specified bearing force or exceeds the specified force and does not break to cause the damage and the unlocking of a locking mechanism in the lock, so that a certain risk exists when a user uses the anti-breaking lock.

Disclosure of Invention

The invention aims to provide a lock capable of preventing violent unlocking, which has the effects of higher safety, low cost and strong reliability.

The technical purpose of the invention is realized by the following technical scheme: a lock for preventing violent opening comprises an unlocking main body and a lock body, wherein a linkage block is movably arranged in the lock body, a lock tongue is arranged on the linkage block, and a driving mechanism for driving the linkage block to move is arranged in the lock body; the unlocking main body comprises a knob and a lock core assembly arranged in the knob, and the lock core assembly is in transmission fit with the driving mechanism;

the driving mechanism comprises a rotating sleeve and a connecting sleeve, the rotating sleeve is rotationally connected with the lock body, the connecting sleeve is rotationally connected with the rotating sleeve, the connecting sleeve is in transmission connection with the lock core component, an electromagnetic lock rod component is arranged between the connecting sleeve and the rotating sleeve, and the electromagnetic lock rod component enables the connecting sleeve and the rotating sleeve to be in rotation-stopping fit;

the connecting sleeve is provided with a connecting ring, the connecting ring is provided with a connecting column, the connecting column is in driving fit with the linkage block, the rotating sleeve is provided with a driving column, and the driving column is in driving fit with the connecting ring;

an anti-violence clutch device is arranged between the lock core assembly and the knob, and the lock core assembly and the knob are in transmission fit through the anti-violence clutch device in a normal state;

the violence-preventing clutch device comprises a clutch block and a clutch connector, a plurality of clutch grooves are formed in the clutch block at equal intervals along the circumferential direction, the clutch block is fixedly installed on the lock cylinder assembly, the clutch connector is movably arranged in the knob through an elastic piece, the clutch connector is in positioning fit with the clutch grooves, and a guide structure is arranged between the clutch connector and the clutch grooves.

By adopting the technical scheme, when the lock is normally unlocked, a user can unlock by adopting a password or a mechanical key, when the lock is unlocked by adopting the password, the password controls the electromagnetic lock rod component to move so that the connecting sleeve and the rotating sleeve are integrated, then the knob is rotated and drives the connecting sleeve to rotate through the lock core component, the connecting sleeve drives the rotating sleeve to rotate, and when the rotating sleeve rotates, the driving column on the rotating sleeve pushes the connecting ring to rotate the connecting column, so that the linkage block is driven; when the mechanical key is used for unlocking, the mechanical key is inserted into a lock hole of the lock cylinder assembly, the elastic sheet in the lock cylinder assembly is unlocked, the lock cylinder can be rotated, the connecting sleeve is rotated when the lock cylinder assembly rotates, the connecting sleeve drives the connecting ring to rotate, and the connecting column can drive the linkage block to move to realize unlocking; when violence unlocking is adopted under abnormal conditions, an illegal opener violently rotates the knob by adopting tools such as a wrench and the like, at the moment, under the guiding action of the guiding structure, the clutch plug-in block extrudes the elastic piece under the action of rotating force to separate from the clutch slot, the rotation following action between the knob and the lock cylinder assembly fails, after the clutch plug-in block separates from the clutch slot, the knob can freely rotate relative to the lock cylinder assembly until the clutch plug-in block corresponds to another group of clutch slots again, the clutch plug-in block is inserted into the corresponding clutch slot under the action of the elastic force of the elastic piece, and the lock cylinder assembly and the knob are locked again, so that violent unlocking can be effectively prevented; the clutch groove and the clutch plug connector are adopted for splicing and matching, so that the locking effect is more stable and reliable, the possibility that an illegal opener opens the lock by violence is reduced, the safety is higher, the lock is not easy to damage, the lock does not need to be replaced, and the cost is lower; and the matching between the rotating sleeve and the connecting sleeve is arranged in a split manner, so that electronic unlocking can be adopted, and a mechanical key can be used for unlocking in emergency, so that the use is more convenient and flexible. Because the clutch plug connector can be intermittently plugged into the clutch groove in the rotating process, on one hand, the violence-proof clutch device is not easy to damage when the knob rotates, and does not need to be replaced, so that the cost is lower; on the other hand, the device can also play a role in eliminating the will of illegal openers.

The invention is further provided with: an idle rotation limiting structure is further arranged between the connecting sleeve and the connecting ring, the idle rotation limiting structure comprises an arc-shaped groove formed in the connecting sleeve and a limiting block arranged on the connecting ring, the limiting block is in idle rotation limiting fit with the arc-shaped groove, when the connecting sleeve is driven to rotate by the lock core assembly, the limiting block slides in the arc-shaped groove to form an idle rotation stroke, and the arc angle beta of the idle rotation stroke is correspondingly set to be 90 degrees; be equipped with rotatory limit structure between knob and the unblock main part, the unblock main part is equipped with the arc spacing groove, and the knob is equipped with spacing post, spacing cooperation of spacing post and arc spacing groove, and the arc angle gamma of arc spacing groove also establishes to 90.

By adopting the technical scheme, the arc angle beta of the idle stroke is set to be 90 degrees, and the connecting ring needs to be rotated by 90 degrees to realize the unlocking process, so that when electronic unlocking is adopted, the electronic unlocking can be realized only by rotating the knob by 90 degrees, and when mechanical key unlocking is adopted, the unlocking can be realized only by rotating the lock cylinder assembly by 180 degrees by rotating the mechanical key; when the illegal opener adopts tools such as a spanner to violently rotate the knob, because the knob is equipped with rotatory limit structure between the unblock main part for the knob can only rotate 90 at most, consequently even violence-proof clutch device became invalid, the knob drives the lock core subassembly and rotates 90 at most, because its rotation angle only does not reach 180 for the angle of idle running, consequently still can't realize the unblock, so, illegal opener adopts violence to rotate the knob and has great difficulty.

The invention is further configured as follows: the elastic piece is set to be a strong spring, one end of the strong spring is abutted to the clutch connector, the other end of the strong spring is abutted to the inner wall of the knob, and the strong spring drives the clutch connector to always have a motion trend of being inserted into the clutch groove.

The invention is further provided with: the guide structure comprises a first guide surface arranged on the clutch connector and a second guide surface arranged on the clutch groove, and the first guide surface is in guide fit with the second guide surface.

Through adopting above-mentioned technical scheme, when the knob rotated relatively the lock core subassembly, first spigot surface and second spigot surface direction cooperation pushed the separation and reunion groove with the clutch piece, when the clutch piece was pushed the separation and reunion groove, can reduce the wearing and tearing between the two.

The invention is further configured as follows: a positioning hole is formed in the clutch plug connector, and one end of the strong spring extends into the positioning hole.

Through adopting above-mentioned technical scheme, the one end of powerful spring stretches into in the locating hole, and the locating hole can play better positioning action to the powerful spring, prevents that the powerful spring from taking place the offset at flexible in-process.

The invention is further provided with: the mounting groove has been seted up to the knob, and the separation and reunion plug connector activity sets up in the mounting groove, and the mounting groove inner wall is provided with the inclined plane, and the inclined plane sets up in the one side of keeping away from the separation and reunion plug connector relatively.

Through adopting above-mentioned technical scheme, when installation elastic component, can support the one end of elastic component earlier and install fixedly on the separation and reunion plug connector, then install the other end of elastic component in the mounting groove, the other end of elastic component can be under the guide effect on inclined plane quick, conveniently install in the mounting groove.

The invention is further configured as follows: the unlocking main body is provided with a password unlocking device which is in control fit with the electromagnetic lock rod, the electromagnetic lock rod assembly comprises an electromagnetic lock rod, a return spring and an electromagnet, the electromagnetic lock rod is movably arranged in the rotating sleeve, the connecting sleeve is provided with a plug socket, the return spring drives the electromagnetic lock rod to always have a motion trend away from the plug socket, and the electromagnet drives the electromagnetic lock rod to be plugged in the plug socket; the side wall of the electromagnetic lock rod is provided with a baffle ring which is matched with the rotating sleeve in an anti-falling way.

By adopting the technical scheme, when the password unlocking is successful, the electromagnet is started, the core rod of the electromagnet pushes the electromagnetic lock rod to the insertion port, the electromagnetic lock rod simultaneously penetrates through the connecting sleeve and the rotating sleeve, the rotating sleeve and the connecting sleeve are connected into a whole through the electromagnetic lock rod, and when the connecting sleeve rotates, the rotating sleeve can be driven to synchronously rotate; after the electromagnetic lock rod loses the effect of the electromagnet, the electromagnetic lock rod is reset under the elastic force effect of the reset spring, the electromagnetic lock rod is pushed away from the plug interface, the rotating sleeve and the connecting sleeve can rotate relatively, and the stop ring is arranged to prevent the electromagnetic lock rod from being separated from the rotating sleeve under the elastic force effect of the reset spring to a certain extent.

The invention is further provided with: the outer wall of the rotating sleeve is provided with a lug, the connecting ring is correspondingly provided with an extending part, the connecting column is arranged on the extending part, the driving column is correspondingly arranged on the lug, the driving column is in driving fit with the extending part, and the extending part is provided with an embedded groove for embedding the driving column.

By adopting the technical scheme, when the rotating sleeve rotates, the lug is driven to rotate along with the rotating sleeve, so that the driving column on the lug acts on the extension part, the connecting ring is driven to rotate in the same direction after the extension part is stressed, and the linkage block can be driven to move relative to the lock body by the rotation of the extension part to drive the connecting column to move.

The invention is further provided with: the adapter sleeve lateral wall is provided with the lug, and the intercommunicating pore has been seted up to the lug, is provided with the reference column in the lock body, and the cover is equipped with the reset torsion spring on the reference column, and the one end of reset torsion spring is connected in the intercommunicating pore, and the other end of reset torsion spring supports in the lock body.

Through adopting above-mentioned technical scheme, when adopting password unblock in-process, external force orders about when changeing the cover and rotates, extrudees the reset torsion spring, and when the adapter sleeve no longer received the rotatory effect of external force, the adapter sleeve can be at automatic re-setting under the elastic force effect of reset torsion spring.

In conclusion, the invention has the following beneficial effects:

1. the anti-violence clutch device is arranged between the knob and the lock cylinder assembly, so that the locking action is more stable and reliable, the possibility that an illegal opener opens the lock cylinder by violence is reduced, the safety is higher, and the cost is lower; the rotating sleeve and the connecting sleeve are arranged in a split manner, so that electronic unlocking can be adopted, and a mechanical key can be adopted for unlocking in emergency, so that the use is more convenient and flexible;

2. the clutch groove and the clutch plug-in connector are adopted for splicing and matching, an illegal opener cannot open the clutch plug-in connector violently, and the safety is high; on the other hand, the device can also play a role in eliminating the will of illegal openers;

3. the adoption still is provided with idle running limit structure's mode between adapter sleeve and go-between, and spacing post and the spacing cooperation of arc spacing groove, the knob only can rotate 90, and the lock core subassembly needs rotation angle to be greater than 90 could realize the unblock, still can't realize the unblock during consequently violence rotatory knob, so, illegal person of opening adopts violence to rotate the knob and has great difficulty, and has dual protection's effect.

Drawings

Fig. 1 is a front view of the overall structure of the embodiment.

Fig. 2 is a sectional view of section a-a in fig. 1.

Fig. 3 is an exploded view of a part of the unlocking body in the embodiment.

Fig. 4 is a schematic diagram of the internal structure relationship of the lock body of the embodiment.

Fig. 5 is a schematic structural relationship diagram of the driving mechanism and the linkage block of the embodiment.

Fig. 6 is a schematic structural relationship diagram of the driving mechanism in the embodiment.

Fig. 7 is a top view of the drive mechanism in the embodiment.

Fig. 8 is a sectional view of section B-B in fig. 7.

Fig. 9 is an exploded view of the drive mechanism in the embodiment.

Fig. 10 is a schematic end face structure relationship diagram of the connecting sleeve in the embodiment.

Fig. 11 is a schematic view of an unlocking body internal rotation limiting structure of the embodiment.

FIG. 12 is a schematic diagram showing the structure of the knob and the clutch plate in a separated state in the embodiment.

Fig. 13 is a side view of the anti-violent clutching device of the embodiment.

Fig. 14 is a cross-sectional view of section C-C in fig. 13.

Fig. 15 is a cross-sectional view of section D-D in fig. 13.

In the figure: 1. unlocking the main body; 11. a password unlocking panel; 12. a knob; 121. a handle; 122. a lock hole; 123. a limiting post; 124. mounting grooves; 1241. a bevel; 13. a plug assembly; 14. an arc-shaped limiting groove; 2. a lock body; 21. a linkage block; 211. a latch bolt; 212. a strip-shaped groove; 22. a positioning column; 221. a return torsion spring; 3. a drive mechanism; 31. rotating the sleeve; 311. a connecting nozzle; 312. installing a sleeve; 313. a lug; 3131. a drive column; 32. connecting sleeves; 321. an interface; 322. inserting holes; 323. inserting a core; 3231. a jack; 324. a bump; 3241. a communicating hole; 325. an arc-shaped slot; 4. an electromagnetic lock bar assembly; 41. an electromagnetic lock lever; 411. a baffle ring; 42. a return spring; 43. an electromagnet; 5. a connecting ring; 51. an extension portion; 511. connecting columns; 512. a groove is embedded; 52. a limiting block; 6. an anti-violence clutch device; 61. a clutch block; 611. a clutch groove; 6111. a second guide surface; 612. an extension sleeve; 62. a clutch plug-in connector; 621. positioning holes; 622. a first guide surface; 7. a strong spring.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

1-4, the lock comprises an unlocking main body 1 and a lock body 2, wherein the unlocking main body 1 comprises a password unlocking panel 11, a password unlocking device (not shown in the figure), a knob 12 and a lock cylinder assembly 13 arranged in the knob 12, a handle 121 in a horizontal state is arranged on the knob 12, a lock hole 122 is hidden in the handle 121, and the lock cylinder assembly 13 is arranged in the lock hole 122; the lock body 2 is internally and movably provided with a linkage block 21, the linkage block 21 is provided with a bolt 211, the lock body 2 is internally provided with a driving mechanism 3 for driving the linkage block 21 to move, and the lock cylinder assembly 13 is in transmission fit with the driving mechanism 3.

As shown in fig. 5-9, the driving mechanism 3 includes a rotating sleeve 31 and a connecting sleeve 32 coaxially disposed, the rotating sleeve 31 is rotatably connected to the lock body 2, the connecting sleeve 32 is rotatably connected to the rotating sleeve 31, an electromagnetic lock rod assembly 4 is disposed between the connecting sleeve 32 and the rotating sleeve 31, the electromagnetic lock rod assembly 4 enables the connecting sleeve 32 and the rotating sleeve 31 to be in rotation-stopping fit, and the password unlocking device is in control fit with the electromagnetic lock rod 41. The side wall of the rotating sleeve 31 is integrally formed with a connecting nozzle 311, the connecting nozzle 311 is fixedly provided with a mounting sleeve 312, the mounting sleeve 312 is fixedly mounted on the connecting nozzle 311 through a buckle structure, a mounting cavity communicated with the inner cavity of the rotating sleeve 31 is formed in the mounting sleeve 312, the electromagnetic lock rod assembly 4 comprises an electromagnetic lock rod 41, a return spring 42 and an electromagnet 43, the electromagnetic lock rod 41 is movably arranged in the mounting cavity, the connecting sleeve 32 is provided with a socket 321, the return spring 42 drives the electromagnetic lock rod 41 to always have a movement trend away from the socket 321, and the electromagnet 43 drives the electromagnetic lock rod 41 to be plugged in the socket 321 after being electrified; the side wall of the electromagnetic lock rod 41 is provided with a stop ring 411, the stop ring 411 is in anti-drop fit with the mounting sleeve 312, one end of the return spring 42 abuts against the stop ring 411, and the other end abuts against the rotating sleeve 31.

As shown in fig. 8-9, the connecting sleeve 32 includes a plug hole 322 provided at the center, the plug hole 322 is a hexagonal hole, a plug core 323 is inserted in the plug hole 322, the plug core 323 is correspondingly provided as a hexagonal column, the plug core 323 is provided with a quadrilateral plug hole 3231 for plug-in connection of the plug core assembly 13, and when the plug core assembly 13 rotates, the plug core 323 can be driven to rotate, so as to drive the connecting sleeve 32 to rotate.

As shown in fig. 6-9, a lug 313 is disposed on an outer wall of the rotating sleeve 31, a driving post 3131 is disposed on the lug 313, the connecting sleeve 32 is rotatably disposed with the connecting ring 5, an extending portion 51 is correspondingly disposed on the connecting ring 5, a connecting post 511 is disposed on the extending portion 51, the driving post 3131 is in driving fit with the extending portion 51 of the connecting ring 5, the extending portion 51 is opened with an insertion slot 512 for the driving post 3131 to be inserted, and both the driving post 3131 and the connecting post 511 are eccentrically disposed. When the rotating sleeve 31 rotates, the driving lug 313 rotates along with the rotating sleeve, so that the driving post 3131 on the lug 313 acts on the extending part 51, the extending part 51 is forced to drive the connecting ring 5 to rotate in the same direction, and the extending part 51 rotates to drive the connecting post 511 to move, so as to drive the linkage block 21 to move relative to the lock body 2. The linkage block 21 is provided with a strip-shaped groove 212, the connecting column 511 is movably arranged in the strip-shaped groove 212, and the connecting column 511 is in driving fit with the linkage block 21.

As shown in fig. 6, a protrusion 324 is disposed on a side wall of the connecting sleeve 32, the protrusion 324 is provided with a communicating hole 3241, a positioning column 22 is disposed in the lock body 2, a restoring torsion spring 221 is sleeved on the positioning column 22, one end of the restoring torsion spring 221 is connected to the communicating hole 3241, and the other end of the restoring torsion spring 221 abuts against the lock body 2. When the password unlocking process is adopted, the external force drives the rotating sleeve 31 to rotate, the reset torsion spring 221 is extruded, and when the connecting sleeve 32 is not subjected to the external force rotation action any more, the connecting sleeve 32 can automatically reset under the elastic force action of the reset torsion spring 221.

As shown in fig. 9-11, an idling limiting structure is further disposed between the connecting sleeve 32 and the connecting ring 5, the idling limiting structure includes an arc-shaped groove 325 formed in the connecting sleeve 32 and a limiting block 52 formed in the connecting ring 5, the limiting block 52 is in idling limiting fit with the arc-shaped groove 325, when the lock cylinder assembly 13 drives the connecting sleeve 32 to rotate, the limiting block 52 slides in the arc-shaped groove 325 to form an idling stroke, and an arc angle β of the idling stroke is correspondingly set to 90 °; be equipped with rotatory limit structure between knob 12 and the unblock main part 1, unblock main part 1 is equipped with arc spacing groove 14, and the back lid of knob 12 is equipped with spacing post 123, spacing post 123 and the spacing cooperation in arc spacing groove 14, and the arc angle gamma of arc spacing groove 14 also establishes to 90.

As shown in fig. 3 and 12-15, a violent engaging and disengaging prevention device 6 is arranged between the lock cylinder assembly 13 and the rotary knob 12, and the lock cylinder assembly 13 and the rotary knob 12 are in transmission fit through the violent engaging and disengaging prevention device 6 under normal conditions. The violence-preventing clutch device 6 comprises a clutch block 61 and a clutch plug-in connector 62, wherein four clutch grooves 611 are formed in the clutch block 61 at equal intervals along the circumferential direction, a central angle alpha formed between every two adjacent clutch grooves 611 is 90 degrees, an extension sleeve 612 is formed in the middle of the clutch block 61 in a coaxial extending mode, and the clutch block 61 is matched with a spring plate of the lock core assembly 13 in a locking mode through the extension sleeve 612. The knob 12 is provided with two symmetrical mounting grooves 124, the clutch plug-in connectors 62 are movably arranged in the mounting grooves 124 in a one-to-one correspondence manner through strong springs 7, and the clutch plug-in connectors 62 are in positioning fit with the clutch grooves 611. The clutch plug-in connector 62 is provided with a positioning hole 621, one end of the strong spring 7 extends into the positioning hole 621, the other end of the strong spring 7 abuts against the inner wall of the mounting groove 124, and the strong spring 7 drives the clutch plug-in connector 62 to have a movement tendency of being inserted into the clutch groove 611 all the time. The inner wall of the mounting groove 124 is provided with an inclined plane 1241, the inclined plane 1241 is arranged on one side which is relatively far away from the clutch plug connector 62, when the strong spring 7 is mounted, one end of the strong spring 7 can be inserted into the positioning hole 621 first for mounting and fixing, then the other end of the strong spring 7 is mounted in the mounting groove 124, and the other end of the strong spring 7 can be mounted in the mounting groove 124 quickly and conveniently under the guiding action of the inclined plane 1241. One end of the strong spring 7 extends into the positioning hole 621, and the positioning hole 621 can perform a good positioning function on the strong spring 7, so that the strong spring 7 is prevented from being displaced in the stretching process.

As shown in fig. 12, a guiding structure is disposed between the clutch plug 62 and the clutch slot 611, the guiding structure includes a first guiding surface 622 disposed on the clutch plug 62 and a second guiding surface 6111 disposed on the clutch slot 611, and the first guiding surface 622 and the second guiding surface 6111 are in guiding fit. When the knob 12 rotates relative to the plug assembly 13, the first guide surface 622 and the second guide surface 6111 are in guiding engagement to push the clutch block 61 out of the clutch groove 611, and when the clutch block 61 is pushed out of the clutch groove 611, the abrasion between the two parts can be reduced.

The basic working principle of the invention is as follows: when the lock is normally unlocked, a user can unlock the lock by using a password or a mechanical key, when the password is unlocked, after the password is correctly input, the electromagnet 43 is started, the core rod of the electromagnet 43 pushes the electromagnetic lock rod 41 into the socket 321, at the moment, the electromagnetic lock rod 41 penetrates through the rotary sleeve 31 and the connecting sleeve 32, the rotary sleeve 31 and the connecting sleeve 32 are connected into a whole through the electromagnetic lock rod 41, then, the knob 12 is rotated, the knob 12 drives the connecting sleeve 32 to rotate through the lock core assembly 13, the connecting sleeve 32 drives the rotary sleeve 31 to rotate, when the rotary sleeve 31 rotates, the upper driving post 3131 pushes the connecting ring 5 to enable the connecting post 511 to rotate, so that the linkage block 21 is driven, namely, the lock can be unlocked, and the linkage block 21 drives the lock tongue 211 to move, which is a conventional technology in the field, and is not described herein again; when the electromagnetic lock rod 41 loses the function of the electromagnet 43, the electromagnetic lock rod is reset under the elastic force of the return spring 42, the electromagnetic lock rod 41 pushes away from the socket 321 and extends out of the rotating sleeve 31, the rotating sleeve 31 and the connecting sleeve 32 can rotate relatively, and the stop ring 411 can prevent the electromagnetic lock rod 41 from being separated from the mounting sleeve 312 under the elastic force of the return spring 42 to a certain extent.

When the mechanical key is used for unlocking, the mechanical key is inserted into the lock hole 122 of the lock cylinder assembly 13, the elastic sheet in the lock cylinder assembly 13 is unlocked, the lock cylinder can be rotated, the lock cylinder assembly 13 drives the connecting sleeve 32 to rotate through the lock core 323 when rotating, the connecting sleeve 32 collides with the limiting block 52 of the connecting ring 5 after idling for 90 degrees, then the connecting sleeve 32 continues to rotate for 90 degrees, the connecting ring 5 can be driven to rotate, and the linkage block 21 is driven to move through the connecting column 511 to realize unlocking.

When adopting violence unblock under the abnormal condition, illegal opener adopts instrument violence such as spanner to rotate knob 12, at this moment, under guide structure's guide effect for separation and reunion inserted block receives the revolving force effect extrusion powerful spring 7 and breaks away from clutch groove 611, and the effect along with the commentaries on classics between knob 12 and the lock core subassembly 13 is invalid, and knob 12 can be relative lock core subassembly 13 free rotation until separation and reunion plug 62 corresponds another separation and reunion groove 611 once more, and separation and reunion plug 62 inserts in corresponding clutch groove 611 under the elasticity effect of powerful spring 7, locks lock core subassembly 13 and knob 12 again. Therefore, the clutch groove 611 is matched with the clutch connector 62 in a splicing manner, an illegal opener cannot open the clutch connector 62 violently, and the safety is high, and the clutch connector 62 can be intermittently spliced in the clutch groove 611 in the rotating process, so that on one hand, the clutch device is not easy to damage when the knob 12 rotates, does not need to be replaced, and is low in cost; on the other hand, the device can also play a role in eliminating the will of illegal openers.

Because the arc angle beta of the idle running stroke is set to be 90 degrees, and the connecting ring 5 needs to be rotated by 90 degrees to realize the unlocking process, if the aim of unlocking is to be achieved, the electronic unlocking can be realized only by rotating the knob by 90 degrees, and when the mechanical key is used for unlocking, the mechanical key needs to be rotated by 180 degrees to realize the unlocking due to the idle running stroke; when an illegal opener violently rotates the knob 12, tools such as a wrench and the like are clamped on the horizontal handle 121, and the knob 12 is provided with the rotation limiting structure between the unlocking main body 1, so that the knob 12 can only rotate 90 degrees at most, and even if the violence-preventing clutch device 6 fails, the knob 12 drives the lock cylinder assembly 13 to rotate 90 degrees at most, and the unlocking cannot be realized because the rotation angle is only an idle stroke less than 180 degrees, so that the illegal opener violently rotates the knob 12.

The anti-violence clutch device 6 is arranged between the knob 12 and the lock cylinder assembly 13 and is matched with idling limit, so that the locking effect is more stable and reliable, the possibility that an illegal opener opens the lock cylinder by violence is reduced, and the anti-violence lock cylinder has higher safety and double protection effects; and the matching between the rotating sleeve 31 and the connecting sleeve 32 is arranged in a split manner, so that electronic unlocking can be adopted, and a mechanical key can be adopted for unlocking in emergency, so that the use is more convenient and flexible.

The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present patent application are included in the present patent application.

Claims

1. A lock capable of preventing violence unlocking comprises an unlocking main body (1) and a lock body (2), wherein a linkage block (21) is movably arranged in the lock body (2), a lock tongue (211) is arranged on the linkage block (21), and a driving mechanism (3) for driving the linkage block (21) to move is arranged in the lock body (2); the unlocking main body (1) comprises a knob (12) and a lock cylinder assembly (13) arranged in the knob (12), wherein the lock cylinder assembly (13) is in transmission fit with the driving mechanism (3); the method is characterized in that:

the driving mechanism (3) comprises a rotating sleeve (31) and a connecting sleeve (32), the rotating sleeve (31) is rotatably connected to the lock body (2), the connecting sleeve (32) is rotatably connected to the rotating sleeve (31), the connecting sleeve (32) is in transmission connection with the lock core assembly (13), an electromagnetic lock rod assembly (4) is arranged between the connecting sleeve (32) and the rotating sleeve (31), and the connecting sleeve (32) is in rotation stopping fit with the rotating sleeve (31) through the electromagnetic lock rod assembly (4);

the connecting sleeve (32) is provided with a connecting ring (5), the connecting ring (5) is provided with a connecting column (511), the connecting column (511) is in driving fit with the linkage block (21), the rotating sleeve (31) is provided with a driving column (3131), and the driving column (3131) is in driving fit with the connecting ring (5);

an anti-violence clutch device (6) is arranged between the lock cylinder assembly (13) and the knob (12), and in a normal state, the lock cylinder assembly (13) is in transmission fit with the knob (12) through the anti-violence clutch device (6);

anti-violence clutch device (6) are including separation and reunion piece (61), separation and reunion plug connector (62), separation and reunion piece (61) are equipped with a plurality of separation and reunion grooves (611) along circumference equidistance, separation and reunion piece (61) fixed mounting in lock core subassembly (13), separation and reunion plug connector (62) are located through the elastic component activity in knob (12), separation and reunion plug connector (62) with separation and reunion groove (611) location fit, separation and reunion plug connector (62) with be equipped with guide structure between separation and reunion groove (611).

2. A violence resistant lock according to claim 1, wherein: an idling limiting structure is further arranged between the connecting sleeve (32) and the connecting ring (5), the idling limiting structure comprises an arc-shaped groove (325) formed in the connecting sleeve (32) and a limiting block (52) arranged on the connecting ring (5), the limiting block (52) is in idling limiting fit with the arc-shaped groove (325), when the connecting sleeve (32) is driven to rotate by the lock core assembly (13), the limiting block (52) slides in the arc-shaped groove (325) to form an idling stroke, and the arc angle beta of the idling stroke is correspondingly set to be 90 degrees; knob (12) with be equipped with rotatory limit structure between unblock main part (1), unblock main part (1) is equipped with arc spacing groove (14), knob (12) are equipped with spacing post (123), spacing post (123) with the spacing cooperation of arc spacing groove (14), the arc angle gamma of arc spacing groove (14) also establishes to 90.

3. A violence resistant lock according to claim 1, wherein: the elastic piece is set to be a strong spring (7), one end of the strong spring (7) supports against the clutch connector (62), the other end of the strong spring (7) supports against the inner wall of the knob (12), and the strong spring (7) drives the clutch connector (62) to have a movement trend of being inserted into the clutch groove (611) all the time.

4. A violence resistant lock according to claim 1, wherein: the guide structure comprises a first guide surface (622) arranged on the clutch plug connector (62) and a second guide surface (6111) arranged on the clutch groove (611), and the first guide surface (622) is in guide fit with the second guide surface (6111).

5. A violence-resistant lock according to claim 3 in which: a positioning hole (621) is formed in the clutch connector (62), and one end of the strong spring (7) extends into the positioning hole (621).

6. A violence resistant lock according to claim 1, wherein: mounting groove (124) have been seted up in knob (12), separation and reunion plug connector (62) activity set up in mounting groove (124), mounting groove (124) inner wall is provided with inclined plane (1241), inclined plane (1241) set up in keeping away from relatively one side of separation and reunion plug connector (62).

7. A violence resistant lock according to claim 1, wherein: the unlocking main body (1) is provided with a password unlocking device which is matched with the electromagnetic lock rod (41) in a control mode, the electromagnetic lock rod assembly (4) comprises an electromagnetic lock rod (41), a return spring (42) and an electromagnet (43), the electromagnetic lock rod (41) is movably arranged in the rotary sleeve (31), the connecting sleeve (32) is provided with a plug-in port (321), the return spring (42) drives the electromagnetic lock rod (41) to always have a movement trend far away from the plug-in port (321), and the electromagnet (43) drives the electromagnetic lock rod (41) to be plugged in the plug-in port (321); the side wall of the electromagnetic lock rod (41) is provided with a baffle ring (411), and the baffle ring (411) is matched with the rotating sleeve (31) in a falling-off prevention mode.

8. A violence-resistant lock according to claim 1 in which: the outer wall of the rotating sleeve (31) is provided with a lug (313), the connecting ring (5) is correspondingly provided with an extending part (51), the connecting column (511) is arranged on the extending part (51), the driving column (3131) is correspondingly arranged on the lug (313), the driving column (3131) is in driving fit with the extending part (51), and the extending part (51) is provided with an embedded groove (512) for embedding the driving column (3131).

9. A violence-resistant lock according to claim 1 in which: adapter sleeve (32) lateral wall is provided with lug (324), intercommunicating pore (3241) have been seted up in lug (324), be provided with reference column (22) in lock body (2), the cover is equipped with reset torsion spring (221) on reference column (22), the one end of reset torsion spring (221) connect in intercommunicating pore (3241), the other end of reset torsion spring (221) support in lock body (2).