CN113846908A

CN113846908A - Anti-theft lock core, lock and key thereof

Info

Publication number: CN113846908A
Application number: CN202110775242.8A
Authority: CN
Inventors: 陈志洪
Original assignee: Quanzhou Siwei Industrial Design Co ltd
Current assignee: Quanzhou Siwei Industrial Design Co ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2021-12-28
Anticipated expiration: 2041-07-08
Also published as: CN113846908B

Abstract

The invention relates to the technical field of locks, in particular to an anti-theft lock core, a lock and a key thereof, wherein the anti-theft lock core is provided with a hidden verification device in a lock shell, so that an unary key or a master key is inserted, when a leaf or a marble is exposed, the exploration is invalid, namely a driving part in the lock shell cannot be explored, when the leaf or the marble is hidden, the master key cannot be directly contacted to operate the exploration, only the idling result can be realized, and finally the marble or the leaf cannot be stirred to completely unlock, the hidden verification anti-theft device can prevent technical unlocking, the idling structure can prevent violent rotation unlocking, and the comprehensive safety is extremely high.

Description

Anti-theft lock core, lock and key thereof

Technical Field

The invention relates to the technical field of locks, in particular to an anti-theft lock core, a lock and a key thereof.

Background

At present, locks on the market are various in types and different in structure. The mechanical lock is the most widely used lock in life, is not influenced by occasions and environments, and has high stability.

Along with the security protection requirement of people on lock products is higher and higher, the hidden lockhole is generally adopted on the market to avoid violence unlocking through electronic control, the safety level of the lockset is increased to a certain extent, however, no matter a fingerprint lock, an electronic coded lock, a face recognition lock, a retina recognition lock, a radio frequency lock, a magnetic lock and the like, the mechanical lock core is required to be equipped for fire emergency, and the mechanical lock core or the marble or the design of the leaf piece are that the marble or the leaf piece is pushed to the proper position in different degrees through the tooth patterns on the key.

The lock cores designed by the pins or the blades have the common point that the pins or the blades are exposed and verified, namely, the pins or the blades are verified when a key is inserted into contact with the pins or the blades, so that the lock can be unlocked by a master key for people with certain unlocking skills. One of the unlocking principles of the master key is as follows: the strip-shaped key body extending along the length direction is matched with a tooth die and other poking tools to poke the lock cylinder to achieve the aim of opening various locks in a non-destructive and obvious-trace-free manner.

The lockset can not play a role in preventing theft completely, and unsafe feeling is added to people.

Patent CN201310134360.6 provides an automatic door lock, an idle lock core and an automatic clutch key for preventing technical unlocking, wherein a hidden verification device is arranged on a lock core of the idle lock core, although the invention can effectively prevent technical unlocking and high safety, several pain points exist, namely a pain point one exists, because the volume of the existing lock core is limited, the volume space of the lock core is limited, the number of balls or leaves which can be arranged is limited, that is, the code amount of the lock core is small, so that the pain point with high mutual opening rate is caused; the second pain point is that the lock core can rotate uninterruptedly to unlock locks which need to rotate for several weeks by a specially matched lock structure; the lock core can be unlocked or locked only in one direction; therefore, the application scenarios of the lock cylinder are limited.

Patent CN201710167387.3 provides a lock core and an automatic clutch key capable of automatically resetting the lock dial for preventing technical unlocking, which can quickly and automatically reset the lock dial when unlocking by adding a reset spring on the lock dial, but also adds a pain point, i.e. a pain point one, which limits the lock core from being uninterruptedly rotated to unlock the lock which needs several revolutions, and if the lock core is forcibly rotated, the reset spring is damaged; the second pain point is the pain point with high mutual opening rate caused by the limited number of balls or leaves which can be arranged because the volume of the lock core is limited and the volume space of the lock liner is limited; the lock cylinder can be unlocked or locked in one direction as well; such lock cylinder application scenarios are also limited.

Disclosure of Invention

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The invention aims to overcome the defects and provide an anti-theft lock core, wherein a hidden verification device is arranged in a lock shell, so that an unaffiliated key or a universal key is inserted, when a leaf or a marble is exposed, the exploration is invalid, namely, a driving part in the lock shell cannot be explored, when the leaf or the marble is hidden, the universal key cannot be directly contacted with the operation exploration, only the idling result can be realized, and finally, the marble or the leaf cannot be stirred to completely unlock, the hidden verification anti-theft lock core can prevent technical unlocking, and the security is extremely high.

In order to achieve the purpose, the technical solution of the invention is as follows: an anti-theft lock core comprises a lock shell, a lock liner, a hidden verification device and a cover piece. A first installation cavity, a second installation cavity and a second key slot are arranged inside the lock shell, the second installation cavity is communicated with the first installation cavity and is positioned above the first installation cavity, the rear end of the second installation cavity is communicated with the outside of the lock shell, and the second key slot is arranged between the first installation cavity and the second installation cavity; the lock core is rotatably arranged in the first mounting cavity in the lock shell, a key groove is formed in the front end of the lock core, the key groove extends towards the rear end of the lock core to form a first key groove, a first surrounding groove and a second surrounding groove are formed in the rear end of the lock core, the first surrounding groove is communicated with the second surrounding groove, and a surrounding slope rail is arranged in the second surrounding groove; the hidden verification device is arranged in the second installation cavity in the lock shell and comprises a first verification member and a second verification member mutually verified with the first verification member, the first verification member comprises a verification shaft and an unlocking head, the rear end of the verification shaft is downwards provided with a driving head capable of moving around the slope rail, the unlocking head is arranged at the tail end of the verification shaft and used for unlocking, and the bottom of the second verification member is provided with a driving part; the cover is disposed on the lock case and is used for fixing the concealed authentication device.

Preferably, the first authentication member further comprises a first authentication member reset for causing the first authentication member to perform a reset movement.

Preferably, the first anti-disengaging device comprises a first surrounding anti-disengaging rail and a second surrounding anti-disengaging rail, the first surrounding anti-disengaging rail is arranged on the lock shell and communicated with the first key groove, the first surrounding anti-disengaging rail is matched with the second surrounding anti-disengaging rail on the first key, and when the second surrounding anti-disengaging rail slides into the first surrounding anti-disengaging rail, the first key can be prevented from being disengaged, so that the unlocking stability is improved.

Preferably, the second verification member is a pin joint verification member which comprises a first pin group groove and a first pin group; the first pin group groove is arranged in the second mounting cavity and comprises a plurality of first pin grooves; the first marble group is arranged in the first marble group groove and comprises a plurality of first marbles, and verification grooves are formed in the first marbles; the driving part is arranged at the bottom of the first marble.

Preferably, a first pin resetting piece is arranged above the first pin, and the first pin resetting piece is used for promoting the first pin to do resetting movement.

Preferably, the second verification member is a pin tumbler clutch verification member which comprises a second pin tumbler group and an upper pin tumbler groove; the second marble group comprises a plurality of second marbles, each second marble comprises an upper marble and a lower marble which can be separated from and combined with the upper marble, and the upper marbles are arranged above the lower marbles; the upper marble groove is arranged on the verification shaft and used for mounting the upper marble; the driving part is arranged at the bottom of the lower marble.

Preferably, an upper marble resetting piece is arranged above the upper marble, and the upper marble groove on the verification shaft is penetrated or not penetrated; when the upper marble groove penetrates through the upper marble groove, one end of the upper marble resetting piece acts on the top end of the upper marble, and the other end of the upper marble resetting piece acts on the cover piece; when the upper marble groove is not penetrated, one end of the upper marble resetting piece acts on the top end of the upper marble, and the other end of the upper marble resetting piece acts on the bottom of the upper marble groove.

Preferably, when the upper spring groove is penetrated, the upper spring groove further comprises a second cover member, the second cover member is fixed on the first verification member, and the second cover member adopts a sealing bead or a cover plate; when the second cover part is a sealing ball, one end of the upper marble resetting piece acts on the top end of the upper marble, and the other end of the upper marble resetting piece acts on the sealing ball; when the second cover component is a cover plate, one end of the upper marble resetting component acts on the top end of the upper marble, and the other end of the upper marble resetting component acts on the cover plate.

The sealing ball is a magnetic sealing ball, the upper marble is a magnetic upper marble, the magnetic sealing ball is arranged in the upper marble groove, and the magnetic sealing ball and the magnetic upper marble are mutually repelled.

Preferably, the second validation member is a leaf axial validation member comprising a first leaf group slot, a first leaf group; the first sheet group groove is arranged in the second mounting cavity and comprises a plurality of first sheet groups; the first page set is arranged in the first page set groove and comprises a plurality of first pages, and verification grooves are formed in the first pages; the first page is arranged in the first page groove; the driving part is arranged at the bottom of the first sheet.

Preferably, the page vertical verification component further comprises a first page reset group, the first page reset group comprises a plurality of first page reset pieces, the first page reset pieces are used for promoting the first page to do reset motion, and the first page reset pieces are installed in the first page grooves through the first page;

preferably, the second verifying member is a leaf vertical verifying member, and the leaf vertical verifying member comprises a second leaf group groove, a second leaf group, a verifying side column, a second driving slope or a second driving protrusion; the second blade group groove is arranged in the second mounting cavity, and the first blade group groove comprises a plurality of second blade grooves; the second page set is arranged in the second page set groove, the second page set comprises a plurality of second pages, and the second pages are provided with verification grooves; the second sheet is arranged in the second sheet groove;

preferably, the vertical verifying member further comprises a second reset set, the second reset set comprises a plurality of second reset pieces, and the second reset pieces are used for promoting the second reset pieces to do reset movement; the second sheet resetting piece is arranged in the first sheet groove through the second sheet;

preferably, the verification side column is arranged on the second blade group through a verification side column resetting piece, the upper end of the verification side column is provided with a plurality of first driving bulges or first driving slopes, and the lower end of the verification side column is provided with a lower side column matched with the verification groove; the second driving slope or the second driving protrusion is arranged on the verification shaft and is matched with the first driving protrusion or the first driving slope; the driving part is arranged at the bottom of the second sheet.

Preferably, the invention further comprises a restraining device, the restraining device comprises a restraining piece, a first clamping groove, a second clamping groove and a third clamping groove, the first clamping groove is arranged on the lock container, the second clamping groove is arranged on the lock shell, the third clamping groove is arranged on the second key, or the tail end of the second key is the third clamping groove, wherein the inner part of the restraining piece is positioned in the clamping groove of the lock container and rotates synchronously with the lock container, the outer part of the restraining piece is positioned in the second clamping groove of the lock shell, the restraining piece is used for abutting against the tail end of the second key or being clamped in the third clamping groove to restrain the second key against axial movement when the first key and the second key are separated, and the second clamping groove and the first surrounding rail can be overlapped together;

preferably, the present invention further comprises a repositioning device, the repositioning device comprising: the location pearl resets, the location pearl resets the piece, the location pearl groove resets, the constant head tank resets, should reset the location pearl groove and establish the outer wall at the lock courage, should reset the constant head tank and establish the inner wall at the lock shell, should reset the location pearl and reset through the location pearl a telescopic installation in this constant head tank that resets, the location pearl resets and makes the location pearl that resets be the motion that resets, when the second key slot alignment of the first key slot of this lock courage and lock shell resets, should reset the location pearl and get into in the constant head tank that resets.

Preferably, the first verification member resetting element, the first pin resetting element, the upper pin resetting element, the page resetting element, the verification side post resetting element, the second page resetting element and the resetting positioning ball groove adopt spring elements or magnetic elements.

Preferably, the connection part of the driving head and the verification shaft is arc-shaped, so that the stress area is increased, the structural stability is stronger, and the driving head is not easy to bend.

Preferably, the invention further comprises a second anti-falling device, the second anti-falling device comprises an anti-falling piece, a first anti-falling groove and a second anti-falling groove, the first anti-falling groove is arranged at the rear end of the lock core, the second anti-falling groove is arranged at the rear end of the lock shell, the inner part of the anti-falling piece is positioned in the first anti-falling groove, the outer part of the anti-falling piece is positioned in the second anti-falling groove, and the anti-falling piece is used for preventing the lock core from falling off or being pulled out violently.

Preferably, the lock core is provided with a surrounding concave rail for accommodating an anti-dropping point protruding from the first key, and the lock shell is provided with a surrounding protrusion matched with the surrounding concave rail for filling a space existing in the first key slot and the second key slot communicated with the surrounding concave rail, so that the lock core and the lock shell are connected more stably, and the rotation process is smoother.

Preferably, the unlocking head has a contact unlocking head or a magnetic unlocking head or an inductive unlocking head.

The invention also provides a lockset, which comprises a lock body and the lock cylinder, wherein the lock cylinder is the anti-theft lock cylinder.

The invention also provides a lockset, which comprises a lock body and a lock cylinder, wherein the lock body is a lock shell in the anti-theft lock cylinder, and the lock cylinder is a lock liner in the anti-theft lock cylinder and a hidden verification device.

The invention also provides a key matched with the anti-theft lock cylinder, which comprises a first key and a second key, wherein the second key can be separated from and separated from the first key, the first key can be inserted into the first key slot through the key slot, the second key can be inserted into the second key slot through the key slot, and the second key is provided with an unlocking slot matched with the driving part.

The working principle of the invention is as follows:

step 1, firstly, inserting an original key (namely a first key and a second key) into key grooves in a lock shell and a lock liner, shifting a second verification component by an unlocking groove on the second key, completely clamping the second key into a second key groove to be immovable when the key is completely inserted into the key grooves (namely the first key is inserted into the first key groove and the second key is inserted into the second key groove), and completely matching driving parts of all blades or marbles with corresponding unlocking grooves at the moment and simultaneously completely matching verification grooves of (a) blade or marble with verification teeth of a verification shaft; or (II) the upper marble is completely positioned in the upper marble groove and the lower marble is completely positioned in the lower marble groove; or (III) the lower side column of the verification side column is completely matched with the verification groove.

And 2, rotating the first key to drive the lock cylinder to rotate synchronously, rotating clockwise from an angle of 0 degree to an angle of 90 degrees or rotating counterclockwise from an angle of 0 degree to an angle of 270 degrees, wherein in the process, the first key and the second key are completely overlapped to be completely staggered (namely separated), namely the first key groove and the second key groove are completely communicated to be completely staggered and not communicated.

And step 3, continuously rotating the first key to drive the lock cylinder to synchronously rotate, clockwise rotating from a 90-degree angle to a 135-degree angle or anticlockwise rotating from a 270-degree angle to a 225-degree angle, in the process,in thatFirst authentication memberUnder the action of the force of the resetting component,the drive head on the first verification member slides from a high position around the ramp rail to a low position so that (a) the original verification resultThe verification teeth of the verification shaft are separated from the verification grooves on the leaf blades or the pins and move from approaching to crossing; or (II) the first verification component drives the upper marbles to synchronously and axially move so that the upper marbles and the lower marbles are staggered; or (III) the lower side column on the verification side column falls into the verification groove on the sheet, and then the unlocking head is used for shifting the switch on the equipment or the lockset to unlock.

And step 4, continuing to rotate the first key to drive the lock cylinder to synchronously rotate, wherein the angle is from 135 degrees to 225 degrees clockwise or from 225 degrees to 135 degrees anticlockwise, and the unlocking head on the first verification component has no change temporarily in the process of the distance.

Step 5, continuously rotating the first key to drive the lock cylinder to synchronously rotate, wherein the lock cylinder rotates clockwise from a 225-270-degree angle or anticlockwise from a 135-degree angle to a 90-degree angle, in the process, the driving head on the verification shaft is pushed by a surrounding slope rail to slide from a low position to a high position of the surrounding slope rail, and meanwhile, the verification shaft performs reset motion under the action of a reset piece, so that or (one) verification teeth of the verification shaft pass through verification grooves on the leaf or the marble to be in a separation state; or (II) the verification shaft drives the upper marble to synchronously and axially move so that the upper marble and the lower marble are superposed; or (III) the lower side column on the verifying side column further leaves from the verifying groove on the blade under the action of the resetting piece force of the verifying side column.

And 6, continuously rotating the first key to drive the lock cylinder to synchronously rotate, wherein the clockwise angle is from 270 degrees to 0 degrees or the counterclockwise angle is from 90 degrees to 0 degrees, and in the process, the first key and the second key are completely staggered to be completely overlapped, namely the first key slot and the second key slot are completely staggered and communicated with each other from not to be completely overlapped.

And 7, finally, pulling out the key to complete unlocking or locking.

It should be noted that the rotation angle mentioned in the unlocking step is only used for enhancing understanding, and it is not stated that the unlocking condition must be achieved by this angle, and the unlocking step uses a rotation of 360 ° for 1 week to complete unlocking or locking, but it is also possible to reverse to 0 ° after half a week or less, and such an operation can also achieve the completion of unlocking or locking.

When the first key slot and the second key slot are not completely staggered, because the verification teeth on the verification shaft are not contacted with the second verification component, (two) the lower side column on the verification side column is not contacted with the leaf sheet, (three) the upper pin slot and the lower pin slot are regarded as the same pin slot, the lower pin slot is not blocked when the lower pin slot is shifted, the second verification component is shifted to be ineffectual, if the lock liner is continuously rotated to ensure that the first key slot and the second key slot are completely staggered, the first key slot of the lock liner and the second key slot of the lock shell are staggered and not communicated, the second verification component in the second key slot can not be touched through the first key slot to be shifted, after the lock liner is continuously rotated, because the original inserted non-original key or the unlocking slot on the master unlocking tool can not pass the final password verification of the second verification component, therefore, the first verification component cannot move axially to enable the unlocking head to move axially to unlock, and finally only can idle.

By adopting the technical scheme, the invention has the beneficial effects that:

1. the hidden verification device is arranged in the lock shell, so that an unary key or a master key is inserted, and the probing is invalid when the blades or the pins are exposed, namely the blades or the pins are separated from the verification teeth of the unlocking shaft or the lower side columns of the verification side columns without contact; when the leaf or the marble is hidden, the master key cannot directly contact the leaf or the marble for operation and exploration, so that the idle running result can be realized, and finally the marble or the leaf cannot be stirred to completely unlock.

2. Through set up hidden verification device in the lock shell, the second in this hidden verification device verifies the component and can set up to pellet shot from a slingshot joint verification, pellet shot from a slingshot separation and reunion verification, the single verification of page piece or the double verification of page piece, not only is applicable to the pellet shot from a slingshot lock, still is applicable to the page piece lock, and application scope is wide, and the practicality is strong, and the security performance is high, and theftproof nature is strong.

3. Through having set up relevant piece that resets for after the unblock or during the shutting, first verification component, second verify the component and can do the motion that resets fast, make the unblock in-process, under the effect of encircleing the sloping rail, first key not only can the reversal, also can continue to rotate, thereby extract the key.

4. Through being the arc at the drive head with the first junction of verifying the component, increase the lifting surface area, structural stability is stronger, the not easy bending.

5. The keys are set into a first key and a second key which can be separated, when the keys are inserted, an unlocking groove on the second key is transferred to a leaf or a marble of the second verification component and is restrained on the lock shell, and when the first key groove and the second key groove are staggered and not communicated by rotating the keys, namely the second key groove and the leaf or the marble of the second verification component are hidden, the second verification component and the first verification component can be allowed to carry out unlocking verification, if the keys are original keys, the verification is successful, and the keys can be unlocked by continuously rotating; if the key is not matched, the verification fails, and the lock cannot be unlocked only by idling after the key is continuously rotated. Therefore, the hidden verification can effectively stop technical unlocking, and the idling function effectively prevents violent twisting and damage, thereby effectively improving the anti-theft safety and the practicability.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Clearly, such objects and other objects of the present invention will become more apparent from the detailed description of the preferred embodiments hereinafter set forth in the various drawings and drawings.

These and other objects, features and advantages of the present invention will become more apparent from the following detailed description of one or more preferred embodiments of the invention, as illustrated in the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the drawings, like parts are designated with like reference numerals, and the drawings are schematic and not necessarily drawn to scale.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only one or several embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to such drawings without creative efforts.

FIG. 1 is a cross-sectional view of an anti-theft lock cylinder of the present invention;

FIG. 2 is a schematic structural diagram of an anti-theft lock cylinder according to the present invention;

FIG. 3 is an exploded view of the structure of an anti-theft lock cylinder according to the present invention;

FIG. 4 is an exploded view of the combination verification of the pins in the anti-theft lock cylinder according to the present invention;

FIG. 5 is an exploded view of a structure for clutch verification of a marble in an anti-theft lock core according to the present invention;

FIG. 6 is an exploded view of a structure for axial verification of blades in an anti-theft lock cylinder according to the present invention;

FIG. 7 is an exploded view of a structure for vertical verification of a blade in an anti-theft lock cylinder according to the present invention;

FIG. 8 is a schematic view of a key in an anti-theft lock cylinder according to the present invention;

fig. 9 is a schematic structural diagram of a first verifying member for verifying the clutch of the marble in the anti-theft lock cylinder.

Description of the main reference numerals:

1. a lock case;

11. a first mounting cavity; 12. a second mounting cavity; 14. a surrounding bulge; 15. second key slot

2. A lock liner;

21. a key slot; 22. a first key slot; 23. a first surrounding groove; 24. a second surrounding groove; 241. encircling the slope rail;

25. encircling the groove track;

3. a first validation member;

31. verifying the shaft; 311. a drive head; 32. an unlocking head; 33. a first verification member reset;

4. a second validation member;

41. a pin joint verification member;

411. a first pin tumbler group groove; 4111. verifying the teeth; 4112. a first bullet slot;

412. a first group of projectiles; 4121. a first pin; 4122. a first pin reset member;

42. a pin tumbler clutch verification member;

421. a second group of projectiles; 4211. mounting a marble; 4212. discharging the marble; 4213. an upper pin return element;

422. an upper bullet groove;

433. a lower bullet groove;

43. a leaf axial validation member;

431. a first leaf group slot;

432. a first group of pages; 4321. a first sheet; 4322. a first sheet slot; 4323. a first sheet reset member;

44. a sheet vertical validation member;

441. a second group of pages; 4411. a second sheet; 4412. verifying the groove; 4413. a second sheet slot;

4414. a second leaf reset member;

442. verifying the side columns; 4421. verifying a side column resetting piece; 4422. a drive boss; 4423. a lower side column;

443. driving the ramp;

45. a drive section;

5. resetting the positioning device:

51. resetting the positioning beads; 52. a positioning bead reset piece; 53. a reset positioning bead groove, 54 and a reset positioning groove;

6. a key;

61. a first key; 611. anti-drop points;

62. a second key; 621. unlocking the groove;

63. a first anti-drop device;

631. a first derailment prevention; 632. a second derailment prevention;

7. a cover member;

8. a second anti-falling device;

81. an anti-drop sheet; 82. a first drop-preventing groove; 83. a second anticreep groove;

9. a restraint device;

91. a restraint sheet; 92. a first card slot; 93. a second card slot; 94. and a third card slot.

Detailed Description

The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details or with other methods described herein.

Example 1

Referring to fig. 1-3, fig. 1 is a cross-sectional view of an anti-theft lock cylinder according to the present invention; FIG. 2 is a schematic structural diagram of an anti-theft lock cylinder according to the present invention; fig. 3 is an exploded view of the structure of an anti-theft lock core of the present invention.

The embodiment provides an anti-theft lock core, which comprises a lock shell 1, a lock liner 2, a hidden verification device, a cover piece 7, a constraint device 9 and a reset positioning device 5. The lock core 2 is rotatably disposed in the lock case 1, the concealing verification device is disposed in the lock case 1 and above the lock core 2, and the cover 7 is disposed on the lock case 1 and used for fixing the concealing verification device.

The inside of this lock shell 1 is provided with first installation cavity 11, second installation cavity 12, second key slot 15, and this second installation cavity 12 communicates with each other and is located the top of this first installation cavity 11 with this first installation cavity 11, and the rear end of this second installation cavity 12 communicates with each other with this lock shell 1 outside, and this second key slot 15 sets up between this first installation cavity 11 and this second installation cavity 12.

The lock core 2 is rotatably disposed in the first mounting cavity 11 of the lock housing 1, a key slot 21 is disposed at the front end of the lock core 2, the key slot 21 extends toward the rear end of the lock core 2 to form a first key slot 22, a first surrounding slot 23 and a second surrounding slot 24 are disposed at the rear end of the lock core 2, the first surrounding slot 23 is communicated with the second surrounding slot 24, and a surrounding slope rail 241 is disposed in the second surrounding slot 24.

The lock core 2 is provided with a surrounding concave rail 25 for accommodating a protruding anti-dropping point of the first key 61, and the lock shell 1 is provided with a surrounding protrusion 14 matched with the surrounding concave rail 25 for filling a space where the surrounding concave rail 25 connects the first key slot 22 and the second key slot 15, so that the lock core 2 is more stably connected with the lock shell 1, and the rotation process is smoother.

The concealed authentication device is arranged in the second mounting cavity 12 in the lock housing 1 and comprises a first authentication member 3, a second authentication member 4 for mutual authentication with the first authentication member 3.

The first authentication member 3 comprises an authentication shaft 31, an unlocking head 32 and a first authentication member resetting part 33, wherein a driving head 311 which can move around the slope rail 241 is downwards arranged at the rear end of the authentication shaft 31, the unlocking head 32 is arranged at the tail end of the authentication shaft 31 and is used for unlocking, and the first authentication member resetting part 33 is used for promoting the first authentication member 3 to do resetting movement.

The unlocking head 32 has a contact unlocking head 32 or a magnetic unlocking head 32 or an inductive unlocking head 32.

The first verification member resetting part 33, the first pin resetting part 4122, the upper pin resetting part 4213, the first leaf resetting part 4323, the verification side column 442 resetting part and the second leaf resetting part 4414 are spring parts or magnetic parts.

The bottom of the second authentication member 4 is provided with a drive portion 45.

The cover 7 is arranged on the lock housing 1 and serves to fix the concealed authentication device.

The restriction device 9 comprises a restriction piece 91, a first engagement groove 92, a second engagement groove 93, and a third engagement groove 94, wherein the first engagement groove 92 is disposed on the cylinder core 2, the second engagement groove 93 is disposed on the lock housing 1, the third engagement groove 94 is disposed on the second key 62, or the end of the second key 62 is the third engagement groove 94, wherein an inner portion of the restriction piece 91 is located in the engagement groove of the cylinder core 2 and rotates synchronously with the cylinder core 2, and an outer portion of the restriction piece 91 is located in the second engagement groove 93 of the lock housing 1, the restriction piece 91 is used for abutting against the end of the second key 62 or being engaged in the third engagement groove 94 to restrict the second key 62 from moving axially when the first key 61 and the second key 62 are separated;

the reset positioning device 5 comprises a reset positioning bead 51, a positioning bead reset piece 52, a reset positioning bead groove 53 and a reset positioning groove 54, wherein the reset positioning bead groove 53 is arranged on the outer wall of the lock core 2, the reset positioning groove 54 is arranged on the inner wall of the lock case 1, the reset positioning bead 51 is telescopically arranged in the reset positioning groove 54 through the positioning bead reset piece 52, the positioning bead reset piece 52 enables the reset positioning bead 51 to do reset movement, and when the first key groove 22 of the lock core 2 and the second key groove 15 of the lock case 1 are aligned and reset, the reset positioning bead 51 enters the reset positioning groove 54.

The connection between the driving head 311 and the verification shaft 31 is arc-shaped, so that the stress area is increased, the structural stability is stronger, and the driving head is not easy to bend.

The embodiment further comprises a second anti-falling device 8, wherein the second anti-falling device 8 comprises a first anti-falling groove 82 and a second anti-falling groove 83, the first anti-falling groove 82 is arranged at the rear end of the lock core 2, the second anti-falling groove 83 is arranged at the rear end of the lock shell 1, the inner part of the anti-falling piece 81 is located in the first anti-falling groove 82, the outer part of the anti-falling piece is located in the second anti-falling groove 83, and the anti-falling piece is used for preventing the lock core 2 from falling off or being violently pulled out.

Example 2

Referring to fig. 4, fig. 4 is an exploded view of a structure for joint verification of marbles in the anti-theft lock core.

The second authentication member 4 is a bullet joint authentication member 41, and the bullet joint authentication member 41 includes a first bullet group slot 411 and a first bullet group 412; the first pin group slot 411 is disposed in the second mounting cavity 12, and the first pin group slot 411 includes a plurality of first pin slots 4112; the first ball set 412 is disposed in the first ball set groove 411, the first ball set 412 includes a plurality of first balls 4121, and the first balls 4121 are provided with verification grooves 4412; the driving portion 45 is disposed at the bottom of the first pin 4121.

A first pin returning element 4122 is arranged above the first pin 4121, and the first pin returning element 4122 is used for promoting the first pin 4121 to perform a returning motion.

The present embodiment further includes a second anti-separation device 8, the second anti-separation device 8 includes an anti-separation sheet 81, a first anti-separation groove 82, a second anti-separation groove 83, the first anti-separation groove 82 is disposed at the rear end of the lock core 2, the second anti-separation groove 83 is disposed at the rear end of the lock housing 1, the inner portion of the anti-separation sheet 81 is located in the first anti-separation groove 82, and the outer portion is located in the second anti-separation groove 83, which is used for preventing the lock core 2 from falling off or being violently pulled out.

Example 3

Referring to fig. 5, fig. 5 is an exploded view of a structure for verifying the clutch of the marble in the anti-theft lock cylinder.

The second verification member 4 is a pin tumbler clutch verification member 42, and the pin tumbler clutch verification member 42 comprises a second pin tumbler group 421 and an upper pin tumbler groove 422; the second marble group 421 includes a plurality of second marbles, the second marbles include an upper marble 4211, and a lower marble 4212 clutchable to the upper marble 4211, the upper marble 4211 is disposed above the lower marble 4212; the upper pin groove 422 provided on the authentication shaft 31, the upper pin groove 422 being for mounting the upper pin 4211; the driving portion 45 is provided at the bottom of the lower pin 4212.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a first verifying member for verifying the clutch of the marble in the anti-theft lock cylinder of the invention.

An upper marble reset piece 4213 is arranged above the upper marble 4211, and the upper marble groove 422 on the verification shaft 31 comprises a through hole or no through hole; wherein when the upper pin groove 422 is through, one end of the upper pin returning member 4213 acts on the top end of the upper pin 4211, and the other end of the upper pin returning member 4213 acts on the cover member 7; when the upper pin groove 422 is non-penetrating, one end of the upper pin returning element 4213 acts on the top end of the upper pin 4211, and the other end of the upper pin returning element 4213 acts on the bottom of the upper pin groove 422.

When the upper pin groove 422 is through, the upper pin groove further includes a second cover member, the second cover member is fixed on the first verification member 3, and the second cover member adopts a seal bead or a cover plate; when the second cover member is a seal bead, one end of the upper pin resetting member 4213 acts on the top end of the upper pin 4211, and the other end of the upper pin resetting member 4213 acts on the seal bead; when the second cover member is a cover plate, one end of the upper pin returning member 4213 acts on the top end of the upper pin 4211, and the other end of the upper pin returning member 4213 acts on the cover plate.

The seal bead is a magnetic seal bead, the upper pin 4211 is a magnetic upper pin 4211, the magnetic seal bead is arranged in the upper pin groove 422, and the magnetic seal bead and the magnetic upper pin 4211 are mutually repelled.

Example 4

Referring to fig. 6, fig. 6 is an exploded view of a structure for axial verification of a blade in an anti-theft lock cylinder.

The second verifying member 4 is a leaf axial verifying member 43, and the leaf axial verifying member 43 comprises a first leaf group groove 431, a first leaf group 432 and a first leaf resetting group; the first leaf set groove 431 is disposed in the second mounting cavity 12, the first leaf set groove 431 including a plurality of first leaf 4321 grooves 4322; the first sheet set 432 is disposed in the first sheet set groove 431, the first sheet set 432 includes a plurality of first sheets 4321, and the first sheets 4321 are provided with verification grooves 4412; the first page reset group includes a plurality of first page reset members 4323, the first page reset members 4323 being adapted to urge the first page 4321 to perform a reset motion; the first leaf 4321 is mounted in the slot 4322 of the first leaf 4321 by a first leaf reset 4323; the driving part 45 is disposed at the bottom of the first sheet 4321.

Example 5

Referring to fig. 7, fig. 7 is an exploded view of a structure for vertically verifying a blade in an anti-theft lock cylinder according to the invention.

The second authentication member 4 is a sheet vertical authentication member 44, and the sheet vertical authentication member 44 includes a second sheet set slot, a second sheet set 441, an authentication side post 442, a second driving ramp 443, or a second driving protrusion 4422; the second vane pack slot is disposed in the second mounting cavity 12, the second vane pack slot 431 includes a plurality of second vane slots 4413; the second blade group 441 is arranged in the second blade group groove, the second blade resetting group comprises a plurality of second blade resetting pieces 4414, and the second blade resetting pieces 4414 are used for promoting the second blade 4411 to do resetting movement; the second sheet 4411 is mounted in the second sheet groove 4413 by a second sheet reset 4414;

the second blade group 441 comprises a plurality of second blades 4211, and verification grooves 4412 are arranged on the second blades 4211; the verifying side column 442 is disposed on the second blade group 441 by a verifying side column 442 resetting member, the upper end of the verifying side column 442 is provided with a plurality of first driving protrusions 4422 or first driving slopes 443, and the lower end of the verifying side column 442 is provided with a lower side column 4423 matched with the verifying groove 4412; the second driving ramp 443 or the second driving protrusion 4422 is disposed on the authentication shaft 31 and is adapted to the first driving protrusion 4422 or the first driving ramp 443; the driving part 45 is disposed at the bottom of the second sheet 4211.

Example 6

The embodiment provides a lockset, which comprises a lock body and a lock cylinder, wherein the lock cylinder is one of the anti-theft lock cylinders described in the embodiments 1-5.

Example 7

The embodiment provides a lockset, which comprises a lock body and a lock cylinder, wherein the lock body is one of the lock shells 1 in the anti-theft lock cylinders described in the embodiments 1 to 5, and the lock cylinder is a lock cylinder 2 and a hidden verification device in the anti-theft lock cylinders described in the embodiments 1 to 5.

Example 8

Referring to fig. 8, fig. 8 is a schematic structural diagram of a key in an anti-theft lock cylinder according to the present invention.

The present embodiment provides a key 6 matched with the anti-theft lock cylinder according to embodiments 1 to 5, wherein the key 6 includes a first key 61, a second key 62 capable of being disengaged from the first key 61, the first key 61 can be inserted into the first key slot 22 through the key slot 21, the second key 62 can be inserted into the second key slot 15 through the key slot 21, and the second key 62 is provided with an unlocking slot 621 matched with the driving portion 45.

The working principle of examples 1 to 8 is as follows:

in step 1, the key 6 (i.e., the first key 61 and the second key 62) is inserted into the key slot 21 in the lock shell 1 and the lock cylinder 2 at the same time, the unlocking slot 621 of the second key 62 dials the second verification member 4, when the key 6 is completely inserted into the key slot 21 (i.e., the first key 61 is inserted into the first key slot 22, and the second key 62 is inserted into the second key slot 15), the second key 62 is completely inserted into the second key slot 15 and cannot move, and the driving portions 45 of all the blades or pins are completely matched with the corresponding unlocking slot 621, and simultaneously, the verification groove 4412 of either (one) of the blades or pins is completely matched with the verification tooth 412 of the verification shaft, or (two) of the upper pin 4211 is completely located in the upper pin slot 422 and the lower pin 4212 is completely located in the lower pin slot 433, or (three) of the verification side column 442 is completely matched with the verification groove 4412.

And step 2, continuing to rotate the first key 61 to drive the lock cylinder 2 to synchronously rotate, and clockwise rotating from the angle of 0 degree to the angle of 90 degrees or anticlockwise rotating from the angle of 0 degree to the angle of 270 degrees, wherein in the process, the first key 61 and the second key 62 are completely overlapped to be completely staggered (namely separated), namely the first key slot 22 and the second key slot 15 are completely staggered and not communicated.

And step 3, continuously rotating the first key 61 to drive the lock cylinder 2 to synchronously rotate, clockwise rotating from a 90-degree angle to a 135-degree angle or anticlockwise rotating from a 270-degree angle to a 225-degree angle, and in the process,in thatFirst authentication memberUnder the action of the force of the return member 33,the drive head 311 on the first validator member 3 slides from high to low around the ramp 241 so that the (a) validator tooth 4111 of the original validator shaft disengages from the validator groove 4412 on the leaf or pin to move from close to cross; or (two) the first verification member 3 drives the upper pin 4211 to synchronously and axially move to enable the upper pin 4211 and the lower pin 4212 to be staggered, or (three) the lower side column 4423 on the verification side column 442 falls into the verification groove 4412 on the leaf, and then the unlocking head 32 is used for toggling the switch on the equipment or the lock to unlock.

And step 4, continuing to rotate the first key 61 to drive the lock cylinder 2 to synchronously rotate, wherein the angle is from 135 degrees to 225 degrees clockwise or from 225 degrees to 135 degrees anticlockwise, and the unlocking head 32 on the first verification component 3 is not changed temporarily in the process of the distance.

And step 5, continuing to rotate the first key 61 to drive the lock cylinder 2 to synchronously rotate, namely clockwise rotating from an angle of 225 degrees to an angle of 270 degrees or anticlockwise rotating from an angle of 135 degrees to an angle of 90 degrees, wherein in the process, the driving head 311 on the verification shaft 31 is pushed by the surrounding slope rail 241 to slide from a low position to a high position of the surrounding slope rail 241, and meanwhile, the verification shaft 31 performs resetting movement under the action of the resetting piece 33, so that (a) the verification tooth 4111 of the verification shaft 31 passes through the verification groove 4412 on the leaf or the pin to be in a separated state, or (a) the verification shaft 31 drives the upper pin 4211 to synchronously and axially move to enable the upper pin 4211 and the lower pin 4212 to coincide, or (a) further enables the lower pin 4423 on the verification side column 442 to leave from the verification groove 4412 on the leaf under the action of the resetting piece force of the verification side column 442.

And step 6, continuing to rotate the first key 61 to drive the lock cylinder 2 to synchronously rotate, wherein the angle is from 270 degrees to 0 degrees clockwise or from 90 degrees to 0 degrees anticlockwise, and in the process, the first key 61 and the second key 62 are completely staggered to completely overlapped, namely the first key slot 22 and the second key slot 15 are completely staggered and communicated with each other or are completely overlapped and communicated with each other.

And 7, finally, pulling out the key 6 to complete unlocking or locking.

When the first key slot 22 and the second key slot 15 are not completely staggered, the verification tooth 4111 on the verification shaft and the second verification member 4 are not contacted, the lower column 4423 on the verification side column 442 is not contacted with the leaf, and the upper pin slot 422 and the lower pin slot 423 are regarded as the same pin slot, and the lower pin slot 423 is not blocked when being shifted, so that the second verification member 4 is shifted to be invalid, if the lock container 2 is continuously rotated to ensure that the first key slot 22 and the second key slot 15 are completely staggered, the first key slot 22 of the lock container 2 and the second key slot 15 of the lock shell 1 are not communicated with each other, the first key slot 22 cannot touch the second verification member 4 in the second key slot 15 for shifting, and after the lock container is continuously rotated, if the original key 6 or the unlocking groove 621 on the original unlocking tool cannot pass the final password verification of the second verification member 4, the first authentication member 3 is unable to move axially to cause the unlocking head 32 to move axially to unlock and eventually only idle.

It is to be understood that the disclosed embodiments of the invention are not limited to the particular process steps or materials disclosed herein, but rather, are extended to equivalents thereof as would be understood by those of ordinary skill in the relevant art. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.

Reference in the specification to "an embodiment" means that a particular feature, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Thus, the appearances of the phrase or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.

It should be noted that in the foregoing description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed above.

Claims

1. An anti-theft lock cylinder, comprising:

the lock shell is internally provided with a first installation cavity, a second installation cavity and a second key slot, the second installation cavity is communicated with the first installation cavity and is positioned above the first installation cavity, the rear end of the second installation cavity is communicated with the outside of the lock shell, and the second key slot is arranged between the first installation cavity and the second installation cavity;

the lock core is rotatably arranged in the first installation cavity in the lock shell, a key groove is formed in the front end of the lock core, the key groove extends towards the rear end of the lock core to form a first key groove, a first surrounding groove and a second surrounding groove are formed in the rear end of the lock core, the first surrounding groove is communicated with the second surrounding groove, and a surrounding slope rail is arranged in the second surrounding groove;

the hidden verification device is arranged in the second installation cavity in the lock shell and comprises a first verification member and a second verification member mutually verified with the first verification member, the first verification member comprises a verification shaft and an unlocking head, the rear end of the verification shaft is downwards provided with a driving head capable of moving around the slope rail, the unlocking head is arranged at the tail end of the verification shaft and used for unlocking, and the bottom of the second verification member is provided with a driving part;

a cover member disposed on the lock case and for fixing the concealed authentication device.

2. The anti-theft lock cylinder according to claim 1, characterized in that the first authentication member further comprises a first authentication member reset for causing a resetting movement of the first authentication member.

3. The rotary anti-theft lock cylinder according to claim 1, further comprising a first anti-slip means comprising a first circumferential anti-slip rail provided on the lock housing and communicating with the first key groove, a second circumferential anti-slip rail adapted to the second circumferential anti-slip rail on the first key.

4. The anti-theft lock core according to claim 1 or 3, further comprising a restraining device, wherein the restraining device comprises a restraining piece, a first clamping groove, a second clamping groove and a third clamping groove, the first clamping groove is arranged on the lock core, the second clamping groove is arranged on the lock shell, the third clamping groove is arranged on the second key, or the end of the second key is the third clamping groove, wherein the restraining piece is internally positioned in the clamping groove of the lock core and synchronously rotates with the lock core, the outer part of the restraining piece is positioned in the second clamping groove of the lock shell, and the restraining piece is used for abutting against the end of the second key when the first key and the second key are separated or is clamped in the third clamping groove to restrain the second key against axial movement; the second card slot and the first encircling rail may overlap.

5. The anti-theft lock cylinder according to claim 1, further comprising a reset positioning device comprising: the location pearl resets, the location pearl resets the piece, the location pearl groove resets, the constant head tank resets, should reset the location pearl groove and establish the outer wall at the lock courage, should reset the constant head tank and establish the inner wall at the lock shell, should reset the location pearl and reset through the location pearl a telescopic installation in this constant head tank that resets, the location pearl resets and makes the location pearl that resets be the motion that resets, when the second key slot alignment of the first key slot of this lock courage and lock shell resets, should reset the location pearl and get into in the constant head tank that resets.

6. The anti-theft lock core according to claim 1, further comprising a second anti-slip device, wherein the second anti-slip device comprises an anti-slip piece, a first anti-slip groove and a second anti-slip groove, the first anti-slip groove is provided at the rear end of the cylinder, the second anti-slip groove is provided at the rear end of the lock shell, the inner part of the anti-slip piece is located in the first anti-slip groove, and the outer part of the anti-slip piece is located in the second anti-slip groove.

7. The antitheft lock cylinder according to any of claims 1-6, wherein the second validation member is a joint validation member of pins comprising:

a first pin tumbler group groove which is arranged in the second mounting cavity and comprises a plurality of first pin tumbler grooves;

the first marble group is arranged in the first marble group groove and comprises a plurality of first marbles, and verification grooves are formed in the first marbles;

the driving part is arranged at the bottom of the first marble.

8. The anti-theft lock core according to claim 7, wherein a first pin resetting member is disposed above the first pin, and the first pin resetting member is used for urging the first pin to perform a resetting movement.

9. The antitheft lock cylinder according to any of claims 1 to 6, wherein the second validation member is a pin clutch validation member comprising:

the second marble group comprises a plurality of second marbles, each second marble comprises an upper marble and a lower marble which can be separated from and combined with the upper marble, and the upper marbles are arranged above the lower marbles;

an upper pin groove arranged on the verification shaft and used for installing the upper pin;

the driving part is arranged at the bottom of the lower marble.

10. The anti-theft lock core according to claim 9, wherein an upper pin reset piece is arranged above the upper pin, and the upper pin groove on the verification shaft comprises a penetration or no penetration;

when the upper marble groove penetrates through the upper marble groove, one end of the upper marble resetting piece acts on the top end of the upper marble, and the other end of the upper marble resetting piece acts on the cover piece;

when the upper marble groove is not penetrated, one end of the upper marble resetting piece acts on the top end of the upper marble, and the other end of the upper marble resetting piece acts on the bottom of the upper marble groove.

11. The anti-theft lock cylinder according to any one of claims 9 to 10, characterized in that the upper pin groove, when pierced, further comprises a second cover member, which is fixed to the first authentication member, the second cover member being a sealing bead or a cover plate;

when the second cover part is a sealing ball, one end of the upper marble resetting piece acts on the top end of the upper marble, and the other end of the upper marble resetting piece acts on the sealing ball;

when the second cover component is a cover plate, one end of the upper marble resetting component acts on the top end of the upper marble, and the other end of the upper marble resetting component acts on the cover plate.

12. The anti-theft lock core according to claim 11, wherein the seal bead is a magnetic seal bead, the upper pin is a magnetic upper pin, the magnetic seal bead is disposed in the upper pin groove, and the magnetic seal bead and the magnetic upper pin repel each other.

13. The anti-theft lock cylinder according to any one of claims 1 to 6, characterized in that the second validation member is a leaf axial validation member comprising:

the first sheet group groove is arranged in the second mounting cavity and comprises a plurality of first sheet grooves;

the first page set is arranged in the first page set groove and comprises a plurality of first pages, and verification grooves are formed in the first pages;

the first page is arranged in the first page groove;

the driving part is arranged at the bottom of the first sheet.

14. The anti-theft lock cylinder according to claim 13, further comprising a first set of blade resets comprising a plurality of first blade resets for causing a reset motion of the first blade;

the first page piece resetting piece is installed in the first page piece groove through the first page piece.

15. The anti-theft lock cylinder according to any one of claims 1 to 6, characterized in that the second validation member is a leaf vertical validation member comprising:

the second blade group groove is arranged in the second mounting cavity, and the first blade group groove comprises a plurality of second blade grooves;

the second page set is arranged in the second page set groove and comprises a plurality of second pages, and verification grooves are formed in the second pages;

the second sheet is arranged in the first sheet groove;

the verifying side column is arranged on the second blade group through a verifying side column resetting piece, the upper end of the verifying side column is provided with a plurality of first driving bulges or first driving slopes, and the lower end of the verifying side column is provided with a lower side column matched with the verifying groove;

the second driving slope or the second driving bulge is arranged on the verification shaft and is matched with the first driving bulge or the first driving slope;

the driving part is arranged at the bottom of the second sheet.

16. The anti-theft lock cylinder according to claim 15, characterized in that the leaf vertical validation means further comprises a second leaf reset set comprising a plurality of second leaf resets for causing the second leaf resets to perform a reset movement;

the second blade resetting piece is installed in the first blade groove through the second blade.

17. The anti-theft lock cylinder according to claim 1, wherein the junction of the drive head and the authentication shaft is arcuate.

18. The anti-theft lock core according to claim 1, wherein the cylinder is provided with a circumferential groove track, and the lock shell is provided with a circumferential projection adapted to the circumferential groove track for receiving a protruding "lock-off point" on the first key.

19. The anti-theft lock cylinder according to claim 1, characterized in that the unlocking head has a contact unlocking head or a magnetic unlocking head or an inductive unlocking head.

20. A lock comprising a lock body and a lock cylinder, wherein the lock cylinder is an anti-theft lock cylinder according to any one of claims 1 to 19.

21. A lock comprising a lock body and a lock cylinder, wherein the lock body is a lock shell in the anti-theft lock cylinder according to any one of claims 1 to 19, the lock cylinder is a cylinder liner in the anti-theft lock cylinder according to any one of claims 1 to 18, and a concealed authentication device.

22. A key for use with the anti-theft lock cylinder according to any one of claims 1 to 21, wherein the key comprises a first key, a second key disengageable from the first key, the first key being insertable into the first keyway through the keyway, the second key being insertable into the second keyway through the keyway, the second key being provided with an unlocking slot adapted to the drive portion.