CN116220467B

CN116220467B - Door lock with changeable lock core

Info

Publication number: CN116220467B
Application number: CN202310203455.2A
Authority: CN
Inventors: 李中和
Original assignee: Jiangsu Yicheng Precision Device Technology Co ltd
Current assignee: Jiangsu Yicheng Precision Device Technology Co ltd
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-09-08
Anticipated expiration: 2043-03-06
Also published as: CN116220467A

Abstract

The invention relates to the technical field of door locks, in particular to a door lock with a changeable lock core, which comprises a clamping barrel, a connecting rotary barrel, a clamping plate rotating handle and a clamping plate, wherein the clamping barrel is fixedly connected with a lock body, the connecting rotary barrel is rotatably arranged in the clamping barrel, the clamping plate is horizontally slidably arranged in the connecting rotary barrel, an avoidance sliding groove for horizontally sliding the clamping plate is formed in the connecting rotary barrel, an unlocking rotating groove for horizontally sliding the clamping plate is formed in the clamping barrel, an elastic abutting device for abutting the clamping plate and keeping away from a rotating tongue is arranged in the connecting rotary barrel, the door lock with the changeable lock core is combined with a limiting mechanism, the position of the clamping plate is changed, the length of the clamping plate rotating handle is increased, the unlocking distance is changed, the lock core is changed, meanwhile, an unlocking key can be changed, the door lock can be opened by the unlocking key, and a worker can change a plurality of keys into a lock core structure which can be opened according to the needs of the worker.

Description

Door lock with changeable lock core

Technical Field

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

Background

The triangle lock is a door lock with simple structure and strong universality, and can be used for furniture cabinet doors, electric cabinets, train toilets and vehicle doors. The triangular lock has low manufacturing cost and strong universality, so that the triangular lock has excellent market value.

The triangular lock has strong universality and is also a shortcoming of the triangular lock, all the triangular locks can be opened by adopting one key in one factory, and after the triangular lock is opened, the door lock cannot be found to be opened by other people as the triangular lock is not destroyed. In a factory, a plurality of factory buildings are arranged, which is unnecessary for a plurality of factory building management staff to manage, and if the triangular lock is opened by adopting the same key, whether the factory building is other people or the management staff is damaged cannot be determined.

The most critical point is that the triangular lock is also generally applied to the electrical cabinet, if a plurality of factory servicemen use the same door lock, if a contradiction occurs among a plurality of servicemen, the line of the electrical cabinet is changed, the servicemen of the electrical cabinet do not find that the door lock is once opened, and directly maintain the electrical cabinet, which can lead to danger for the servicemen, but if the triangular lock is completely replaced by a common key door lock, the servicemen can carry a plurality of keys.

Therefore, it is necessary to design a door lock with a changeable lock core, so that a worker can change a plurality of lock cores into a structure that the key can be opened according to the needs of the worker, if the lock is forcedly opened by other people, the key of the worker cannot be opened, and danger is avoided.

Disclosure of Invention

Aiming at the technical defects, the invention aims to provide the door lock with the changeable lock core, so that a worker can change a plurality of lock cores into a structure that the lock core can be opened only by a key according to the needs of the worker, and if the lock core is forcedly opened by other people, the lock core of the worker cannot be opened, thereby avoiding danger.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the invention provides a door lock with a changeable lock core, which comprises a rotating tongue, a lock body, an unlocking key and the lock core, wherein the lock core is rotated by using the unlocking key to drive the rotating tongue to rotate, and the lock body is fixedly arranged in a cabinet door;

when the turning tongue is required to be turned, the unlocking key is clamped with the clamping plate turning handle, the clamping plate turning handle is horizontally pushed, when the unlocking key pushes a distance, the clamping plate moves to a position matched with the unlocking turning groove, and then the clamping plate turning handle is turned, so that the clamping plate can be synchronously rotated, and the clamping plate can drive the connecting rotary drum to be rotated together, so that the turning tongue can be rotated.

Preferably, the cardboard rotating handle includes square plug bush, push tube and locking mechanism, the one end and the cardboard joint of push tube, square jack that supplies square plug bush male is offered to the other end of push tube, locking mechanism is located square plug bush, be used for locking or opening between square plug bush and the push tube, be provided with the butt post on the one end of square plug bush, be provided with the key fixture block that is used for with unblanking key connection on the one end of butt post, stop gear includes internal thread swivel and feeds the spiral ring, the internal thread swivel is connected with the lock body rotation, it is located the internal thread swivel and meshes with the internal thread swivel to feed the spiral ring, be provided with the baffle ring in the feed spiral ring, one side and push tube contact that push tube and baffle ring are laminated each other, when the butt post is pushed the pipe motion, the joint separation between push tube and the baffle ring.

Preferably, the end part of the lug is provided with the lug, and the baffle ring is provided with a groove clamped with the lug.

Preferably, the locking mechanism comprises a supporting block, a trapezoid pushing block, a screw and an extension pushing column, wherein a transverse sliding groove for supporting the block to transversely slide is formed in the square plug bush, the transverse sliding groove is perpendicular to the axis of the square plug bush, a longitudinal sliding groove for supporting the trapezoid pushing block to longitudinally slide is formed in the square plug bush, the inclined surface of the trapezoid pushing block is contacted with one end of the supporting block, the bottom of the screw sequentially penetrates through a key clamping block, the supporting column and is abutted against the trapezoid pushing block, and a screw hole meshed with the screw is formed in the key clamping block.

Preferably, a plurality of anti-test rotating grooves are formed in two sides of the unlocking rotating groove, and the length of each anti-test rotating groove is smaller than that of the unlocking rotating groove.

Preferably, still include the lock core converter, the lock core converter is used for spacing to the key fixture block, the lock core converter includes the spliced pole, drive swivel and at least three arc spacing ring, three arc spacing ring forms annular structure, when needs drive internal thread changes the cover rotatory, the one end of arc spacing ring is contradicted with the internal thread swivel, the inboard of every arc spacing ring all is provided with the supporting step, be provided with the spacing ring on the key fixture block, one side and the supporting step contact of spacing ring, be provided with the arc draw-in groove on the one end outer fringe that the internal thread swivel was kept away from to the arc spacing ring, the outer fringe of arc draw-in groove is located to the drive swivel cover, spliced pole fixed mounting is in the drive swivel, set up on the internal thread swivel and supply spliced pole male draw-in hole.

Preferably, the unlocking key comprises a clamping column, a storage box, a sliding column and a plurality of gaskets, wherein an unlocking clamping groove which is clamped with the key clamping block is formed in the clamping column, the clamping column is fixedly arranged at one end of the storage box, a containing square hole for containing the gaskets is formed in the storage box, and the sliding column is in sliding connection with the storage box.

Preferably, the resilient interference comprises a spring and a push plate, the spring being arranged to apply a resilient force to the push plate adjacent the card.

The invention has the beneficial effects that: this lock of convertible lock core combines through cardboard rotating handle and stop gear for the position of cardboard changes and the length of cardboard rotating handle increases, makes the distance of unblanking change, realizes the change of lock core promptly, simultaneously, can also change the key of unblanking, makes the lock of unblanking after can will changing open, makes the workman can change the structure that can just open of own key into many lock cores according to own needs.

And through preventing the groove that tries on a test, avoid other people to open the lock through the mode that pushes away while changeing, can only open after resetting stop gear and cardboard revolving handle. Therefore, a worker managing the cabinet door cannot open the door lock, the worker is prompted that the door lock is opened by other people, and dangers are avoided.

The door lock can reset both the limiting mechanism and the clamping plate rotating handle under the condition of losing the key, so that the door lock can be restored to the initial position, at the moment, the door lock can be opened through the initial key, and then the difficulty that the door can not be opened due to the loss of the key is avoided.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of a door lock.

Fig. 3 is a schematic perspective view of a door lock with a lock body removed.

Fig. 4 is a schematic perspective view of the cartridge.

Fig. 5 is a half cross-sectional view of fig. 3.

Fig. 6 is an exploded perspective view of the lock cylinder.

Fig. 7 is a partial enlarged view at a of fig. 5.

Fig. 8 is a schematic perspective view of a push tube and feed screw.

Fig. 9 is a perspective view of a lock cylinder.

Fig. 10 is a schematic perspective view of a lock cylinder changer.

Fig. 11 is a schematic perspective view of an unlocking key.

Fig. 12 is an exploded perspective view of an unlocking key.

Fig. 13 is a sectional view of the cylinder after modification.

Reference numerals illustrate: 1-turning tongue; 2-a lock body; 3-unlocking key; 3 a-clamping columns; 3 b-a storage box; 3 c-a spool; 3 d-spacer; 4-lock cylinder converter; 4 a-inserting columns; 4 b-driving swivel; 4 c-an arc-shaped limiting ring; 4c 1-supporting steps; 4c 2-arc-shaped clamping grooves; 5-clamping a cylinder; 5 a-unlocking rotating groove; 5 b-a guide chute; 5 c-a trial-rotation prevention groove; 6-connecting the rotary drum; 6 a-avoiding a chute; 6 b-elastic interference means; 6b 1-springs; 6b 2-push plate; 7-a clamping plate rotating handle; 7 a-square plug bush; 7 b-pushing the tube; 7b 1-bump; 7 c-a locking mechanism; 7c 1-abutting blocks; 7c 2-trapezoidal push blocks; 7c 3-screw; 7c 4-extending push posts; 7 d-a key clamping block; 7 e-abutting the column; 7 h-limiting rings; 8-clamping plates; 9-a limiting mechanism; 9 a-internal thread sleeve; 9 b-feeding a spiro ring; 9b 1-a baffle ring; 9b 2-grooves; 9 c-a clamping hole.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Examples: the invention provides a door lock with a changeable lock core, which comprises a rotating tongue 1, a lock body 2, an unlocking key 3 and the lock core, wherein the lock core is rotated by using the unlocking key 3 to drive the rotating tongue 1 to rotate, namely, the door lock is opened, the lock body 2 is fixedly arranged on the door, the lock core comprises a clamping cylinder 5, a connecting rotary cylinder 6, a clamping plate rotating handle 7 and a clamping plate 8, the clamping cylinder 5 is fixedly connected with the lock body 2, namely, the clamping cylinder 5 cannot rotate, the connecting rotary cylinder 6 is rotatably arranged in the clamping cylinder 5, the outer wall of the connecting rotary cylinder 6 is attached to the inner wall of the clamping cylinder 5, the clamping plate 8 can be horizontally slidably arranged in the connecting rotary cylinder 6, a avoiding chute 6a for horizontally sliding the clamping plate 8 is formed in the connecting rotary cylinder 6, a guiding chute 5b for horizontally sliding the clamping plate 8 is correspondingly formed in the clamping cylinder 5, an elastic abutting device 6b for abutting the clamping plate 8 to be far away from the rotating tongue 1 is arranged in the connecting rotary cylinder 6, the clamping plate 8 is kept to abut on one side of the avoiding chute 6a far away from the rotating tongue 1, the clamping plate rotating handle 7 is inserted into the connecting rotary cylinder 6, namely, the clamping plate 7 can be horizontally pushed by pushing the rotary cylinder 7 to be rotatably arranged in the connecting rotary cylinder 5, the clamping plate 7 can be freely pushed by the rotating handle 7 to be prevented from being connected with the rotating handle 7, and the clamping plate 7 can be freely rotated by the rotating handle 7, the clamping plate is prevented from being freely by the rotating handle 9, and the rotating handle 7 can be freely pushed by the rotating 3, and the rotating handle is prevented from being pushed by the rotating 3;

when the turning tongue 1 is required to be turned, the unlocking key 3 is clamped with the clamping plate turning handle 7, the clamping plate turning handle 7 is horizontally pushed, the clamping plate turning handle 7 pushes the clamping plate 8 to horizontally move together, when the unlocking key 3 pushes X to a distance, the X distance positions the unlocking distance, the clamping plate 8 moves to a position matched with the unlocking turning groove 5a, the clamping plate turning handle 7 is turned again, the clamping plate 8 is enabled to synchronously rotate, and the clamping plate 8 can drive the connecting rotary drum 6 to rotate together, namely, the turning of the turning tongue 1 is achieved. And after the unlocking key 3 is pulled out, the elastic interference device 6b pushes the clamping plate 8 to reset, wherein before the unlocking key 3 is pulled out, the user rotates the unlocking key 3 to reset, so that the clamping plate 8 moves into the guide chute 5 b.

In order to realize the conversion of the lock cylinder, a worker can change a plurality of lock cylinders into a structure that the key can be opened according to the needs of the worker, if the lock cylinders are forcedly opened by other people, the key of the worker cannot be opened so as to avoid danger, therefore, as shown in fig. 5, the clamping plate rotating handle 7 comprises a square plug bush 7a, a push tube 7b and a locking mechanism 7c, one end of the push tube 7b is clamped with the clamping plate 8, when the push tube 7b rotates, the clamping plate 8 can be driven to rotate together through the clamping connection and the push tube 7b, the square plug bush 7a is provided with a square jack into which the square plug bush 7a is inserted, the square plug bush 7a can slide relative to the push tube 7b, the locking mechanism 7c is positioned in the square plug bush 7a and is used for locking or opening the square plug bush 7a and the push tube 7b, namely when the locking mechanism 7c is locked, the square plug bush 7a is fixedly connected with the push tube 7b, an abutting post 7e is arranged at one end of the square plug bush 7a, the abutting post 7e is used for abutting against the push tube 7b, so that when the abutting post 7e is pushed, the push tube 7b can be synchronously driven to push, a key clamping block 7d used for being connected with the unlocking key 3 is arranged at one end of the abutting post 7e, the shape of the key clamping block 7d can be triangle, quadrangle or other shapes, when the unlocking key 3 rotates, the unlocking key 3 can drive the square plug bush 7a to rotate together, when the unlocking key 3 is pushed horizontally, the square plug bush 7a can be pushed together, the limiting mechanism 9 comprises an internal thread rotating sleeve 9a and a feeding spiral ring 9b, the internal thread rotating sleeve 9a is rotationally connected with the lock body 2, the feeding spiral ring 9b is positioned in the internal thread rotating sleeve 9a and meshed with the internal thread rotating sleeve 9a, as shown in figure 7, a baffle ring 9b1 is arranged in the feeding spiral ring 9b, one side of the baffle ring 9b1 is contacted with the push tube 7b, when the baffle ring 9b1 is pushed forward, the push tube 7b can be pushed to move, so that the position of the clamping plate 8 is changed, and the changed distance that the clamping plate 8 is pushed by the push tube 7b is defined as Y. Originally, when the unlocking key 3 is inserted, the clamping plate 8 needs to be pushed by X, the clamping plate 8 can move to a position matched with the unlocking rotary groove 5a, after the current position is changed, the distance X-Y needs to be moved when the key is inserted next time, and the distance Y is only known by a user of the lock core, namely, the worker can adjust the length of the key, and the distance Y is reduced. In order to rotate the internal thread rotating sleeve 9a, the feeding spiral ring 9b is not driven to rotate together, but horizontally moves, for this purpose, one side of the push tube 7b and the baffle ring 9b1 are clamped, so that the internal thread rotating sleeve 9a is limited by the clamping of the push tube 7b when rotating, and the feeding spiral ring 9b is not driven to rotate, namely horizontally moves, wherein, as shown in fig. 6, the elastic interference device 6b also provides an elastic thrust for the push tube 7b, further avoids clamping separation, and when the abutting post 7e pushes the push tube 7b to move, the clamping separation between the push tube 7b and the baffle ring 9b1, namely, the clamping separation between the push tube 7b and the baffle ring 9b1 can be separated, so that after the clamping separation, the clamping plate 8 can rotate when the clamping plate 8 moves to a position matched with the unlocking rotating groove 5 a. When the lock cylinder is changed, firstly, the locking mechanism 7c is opened, the square plug bush 7a and the push tube 7b can slide relatively, and then the internal thread rotating sleeve 9a is rotated, so that the feeding spiral ring 9b horizontally feeds, the feeding spiral ring 9b moves to drive the push tube 7b and the clamping plate 8 to horizontally move, namely, the unlocking distance X is changed, and finally, when the locking mechanism 7c is locked, the square plug bush 7a and the push tube 7b are fixedly connected.

In order to realize the clamping connection between the push tube 7b and the baffle ring 9b1, as shown in fig. 8, the end part of the protruding block 7b1 is provided with a protruding block 7b1, and the baffle ring 9b1 is provided with a groove 9b2 clamped with the protruding block 7b 1. The number of the projections 7b1 and the recesses 9b2 is not limited, and may be one or more.

As shown in fig. 9, in order to realize the locking between the square plug bush 7a and the push tube 7b, the locking mechanism 7c comprises a supporting block 7c1, a trapezoidal push block 7c2, a screw 7c3 and an extending push column 7c4, the square plug bush 7a is provided with a transverse sliding groove for the supporting block 7c1 to slide transversely, the transverse sliding groove is perpendicular to the axis of the square plug bush 7a, the square plug bush 7a is provided with a longitudinal sliding groove for the trapezoidal push block 7c2 to slide longitudinally, the inclined surface of the trapezoidal push block 7c2 is contacted with one end of the supporting block 7c1, the bottom of the screw 7c3 sequentially penetrates through a key clamping block 7d, a supporting column 7e and is in contact with the trapezoidal push block 7c2, and the key clamping block 7d is provided with a screw hole meshed with the screw 7c 3. The bottom of the screw 7c3 can adopt the structure of extending the pushing column 7c4, so that the screw thread distance between the key clamping block 7d and the screw 7c3 is reduced, the processing cost is reduced, when the screw 7c3 is required to be locked, the screw 7c3 pushes the trapezoid pushing block 7c2 to abut against the wall of the square jack of the pushing tube 7b through rotating the screw 7c3, friction force generated between the abutting block 7c1 and the pushing tube 7b is generated, and the fixed connection between the square inserting sleeve 7a and the pushing tube 7b is realized. The contact surfaces of the abutting blocks 7c1 and the hole wall can be rough surfaces.

In order to avoid that when other people cannot open the key, the position of the unlocking rotary groove 5a is tested in a mode of pushing while rotating, as shown in fig. 4, a plurality of anti-test rotary grooves 5c are arranged on two sides of the unlocking rotary groove 5a, and the length of each anti-test rotary groove 5c is smaller than that of the unlocking rotary groove 5a, so that when other people push while rotating, the clamping plate 8 can be clamped into the anti-test rotary groove 5c, namely, the door lock is prevented from being opened by other people in an attempt mode. The number of the anti-rotation grooves 5c may be plural, and the length of each anti-rotation groove 5c may be different. And the counter-applied cabinet body is only provided with a notch which just allows the turning tongue 1 to pass through, and only the turning tongue 1 rotates to a set angle to be opened, so that the length of the anti-test turning groove 5c can be larger than that of the unlocking turning groove 5a, and the anti-theft effect is further achieved.

The door lock can reset both the limiting mechanism 9 and the clamping plate rotating handle 7 under the condition that a key is lost, so that the door lock can be restored to the initial position, at the moment, the door lock can be opened through the initial key, the key is prevented from being lost, and the cabinet door cannot be opened. And other people can also open the cabinet door in the mode, but the worker managing the cabinet door cannot open the door lock, so that the worker is prompted that the door lock is opened by other people, and dangers are avoided.

In order to change the position of the clamping plate 8, the position of the key clamping block 7d can not be driven together to change, as shown in fig. 1, 9 and 10, the novel anti-theft lock cylinder device further comprises a lock cylinder changer 4, the lock cylinder changer 4 is used for limiting the key clamping block 7d, the novel anti-theft lock cylinder device comprises a plug 4a, a driving swivel 9b and at least three arc limiting rings 4c, the three arc limiting rings 4c can be of different arc lengths, the three arc limiting rings 4c form an annular structure, when the inner threaded swivel 9a is required to be driven to rotate, one end of the arc limiting rings 4c is abutted against the inner threaded swivel 9a, supporting steps 4c1 are arranged on the inner side of each arc limiting ring 4c, limiting rings 7h are in contact with the supporting steps 4c1, namely, when the inner threaded swivel 9a rotates, the inner threaded swivel 9 h drives the limiting rings 7h to inwards pull through the supporting steps 4c1, the clamping blocks 7d are prevented from moving, the other side of the arc limiting rings 7c can be pushed by the inner threaded swivel 9b, the inner threaded swivel 9b is prevented from being pushed by the outer edge 4c, the outer edge of the inner threaded swivel 9b is prevented from being pushed by the inner threaded swivel 9b, the inner threaded swivel 9c is prevented from being pushed by the outer edge 4c, and the outer edge of the inner threaded swivel 9b is prevented from being pushed by the inner threaded swivel 9a, and the outer edge of the inner threaded swivel 9c is prevented from being pushed by the inner threaded swivel 4b, and the inner threaded swivel 7b is prevented from being pushed by the inner side, and the inner threaded ring is prevented from being pushed by the inner ring 4b is the inner ring is provided with a limited by the inner limiting ring 7h, and the limiting ring is limited by the limiting ring is additionally, and the inner limiting ring is provided with the limiting ring 4b is additionally, and the limiting the key 7b is a and the key is provided with the key device is 3. The number of the inserting posts 4a can be multiple, the clamping holes 9c are matched with the number of the inserting posts 4a, and a plurality of anti-skid grooves can be formed in the outer edge of the driving swivel 4 b. The middle of the driving swivel 4b is of a hollow structure, and after the position adjustment is completed, a spanner can extend into the rotary screw 7c3, so that the locking mechanism 7c locks the square plug bush 7a and the push tube 7 b.

As shown in fig. 9 and 10, the unlocking key 3 includes a clamping column 3a, a storage box 3b, a sliding column 3c and a plurality of gaskets 3d, the clamping column 3a is provided with an unlocking clamping groove clamped with a key clamping block 7d, the clamping column 3a is fixedly installed at one end of the storage box 3b, the storage box 3b is provided with a square containing hole for containing the gaskets 3d, and the sliding column 3c is in sliding connection with the storage box 3 b. Each time the female screw rotor 9a rotates once, one pad 3d can be reduced or added to achieve the purpose of changing the length of the unlocking key 3. It is conceivable that a limit plate may be provided on the spool 3c for limiting the distance between the spool 3c and the lock body 2, without requiring a worker to unlock the lock by a sense of length. To facilitate the removal of the spacer 3d, an opening and closing door may be provided at the side of the storage case 3b for facilitating the removal of the spacer 3 d. A limiting plate is arranged between the sliding column 3c and the storage box 3b to prevent the sliding column 3c from sliding out of the storage box 3 b.

As shown in fig. 5, the elastic interference device 6b includes a spring 6b1 and a push plate 6b2, and the spring 6b1 is used to apply an elastic force to the push plate 6b2 near the chucking plate 8. The spring 6b1 and the pushing plate 6b2 are inserted in the connecting rotary drum 6, one end of the pushing plate 6b2 is abutted against the clamping plate 8, and the pushing plate 6b2 can be provided with an accommodating groove which is clamped with the clamping plate 8.

When the lock cylinder is used, the lock cylinder is changed, firstly, the locking mechanism 7c is opened, the square plug bush 7a and the push tube 7b can slide relatively, and then the internal thread rotating sleeve 9a is rotated, so that the feeding spiral ring 9b horizontally feeds, the feeding spiral ring 9b moves to drive the push tube 7b and the clamping plate 8 to horizontally move, namely, the unlocking distance X is changed, and finally, when the locking mechanism 7c is locked, the square plug bush 7a and the push tube 7b are fixedly connected.

Wherein the rotation of the female screw boss 9a is by a worker rotating the cylinder changer 4 so that the female screw boss 9a rotates.

After the lock cylinder is changed, according to the number of turns of the internal thread rotating sleeve 9a, one gasket 3d can be reduced or added, so that the aim of changing the length of the unlocking key 3 is fulfilled, and the unlocking key 3 is matched with the lock cylinder.

When the turning tongue 1 is required to be turned, the unlocking key 3 is clamped with the clamping plate turning handle 7, the clamping plate turning handle 7 is horizontally pushed, the clamping plate turning handle 7 pushes the clamping plate 8 to horizontally move together, when the unlocking key 3 pushes the X distance, the clamping plate 8 moves to a position matched with the unlocking turning groove 5a, the clamping plate turning handle 7 is turned again, the clamping plate 8 can be rotated, and the clamping plate 8 can drive the connecting rotary drum 6 to rotate together, namely, the turning tongue 1 is rotated.

This lock of convertible lock core combines through cardboard rotating handle and stop gear for the position of cardboard changes and the length of cardboard rotating handle increases, makes the distance of unblanking change, realizes the change of lock core promptly, simultaneously, can also change the key of unblanking, makes the lock of unblanking after can will changing open, makes the workman can change the structure that can just open of own key into many lock cores according to own needs.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The utility model provides a lock of convertible lock core, including tongue (1), lock body (2), key (3) and lock core unblank, through using key (3) to rotate the lock core unblank, and then drive tongue (1) rotation, lock body (2) fixed mounting in the cabinet door, a serial communication port, lock core includes a clamping section of thick bamboo (5), connect rotary drum (6), cardboard rotation handle (7) and cardboard (8), clamping section of thick bamboo (5) and lock body (2) fixed connection, connect rotary drum (6) rotatable install in clamping section of thick bamboo (5), cardboard (8) can horizontally sliding install in connecting rotary drum (6), set up in connecting rotary drum (6) and supply cardboard (8) horizontally sliding dodge spout (6 a), set up on clamping drum (5) and supply cardboard (8) horizontally sliding guide chute (5 b), be provided with in connecting rotary drum (6) and be used for contradicting cardboard (8) to keep away from elastic conflict ware (6 b) of tongue (1), cardboard rotation handle (7) insert locate in connecting rotary drum (6), be provided with on clamping drum (5) and be used for preventing card (5) rotation handle (7) rotation (9) to set up on clamping drum (5) rotation mechanism (5), the unlocking key (3) is clamped with the clamping plate rotating handle (7);

when turning the turning tongue (1), carrying out the joint between key (3) and cardboard turning handle (7) will unblanking, horizontal promotion cardboard turning handle (7), when the distance of key (3) promotion X unblanked, cardboard (8) move to the position with groove (5 a) complex of unblanking, again rotate cardboard turning handle (7) for cardboard (8) rotate in step, and cardboard (8) can drive and connect rotary drum (6) together rotation, the rotation of turning tongue (1).

2. The door lock with the changeable lock core of claim 1, wherein the lock core rotating handle (7) comprises a square plug bush (7 a), a push tube (7 b) and a locking mechanism (7 c), one end of the push tube (7 b) is clamped with the lock core (8), a square jack for inserting the square plug bush (7 a) is formed in the other end of the push tube (7 b), the locking mechanism (7 c) is positioned in the square plug bush (7 a) and is used for locking or opening the space between the square plug bush (7 a) and the push tube (7 b), an abutting column (7 e) is arranged at one end of the square plug bush (7 a), a key (7 d) used for being connected with an unlocking key (3) is arranged at one end of the abutting column (7 e), the limiting mechanism (9) comprises an inner thread rotating bush (9 a) and a feeding spiral ring (9 b), the inner thread rotating bush (9 a) is rotationally connected with the lock body (2), the feeding spiral ring (9 b) is positioned in the inner thread rotating bush (9 a) and is meshed with the inner thread rotating bush (9 a), and when the inner thread rotating bush (9 a) is contacted with the push tube (7 b), a) is contacted with the pushing ring (7 b) and the pushing ring (7 b) is arranged at one side of the pushing ring (1 b) and contacted with the pushing ring (7 b) and one side (1 b) is contacted with the pushing ring (7 b), the push tube (7 b) is connected with the baffle ring (9 b 1) in a clamping way.

3. A lock with a changeable lock core according to claim 2, characterized in that the end of the projection (7 b 1) is provided with a projection (7 b 1), and the baffle ring (9 b 1) is provided with a groove (9 b 2) which is clamped with the projection (7 b 1).

4. A lock with a changeable lock core according to claim 3, characterized in that the locking mechanism (7 c) comprises a supporting block (7 c 1), a trapezoid pushing block (7 c 2), a screw (7 c 3) and an extending pushing column (7 c 4), the square plug bush (7 a) is provided with a transverse sliding groove for the supporting block (7 c 1) to transversely slide, the transverse sliding groove is perpendicular to the axis of the square plug bush (7 a), the square plug bush (7 a) is provided with a longitudinal sliding groove for the trapezoid pushing block (7 c 2) to longitudinally slide, the inclined surface of the trapezoid pushing block (7 c 2) is in contact with one end of the supporting block (7 c 1), the bottom of the screw (7 c 3) sequentially penetrates through a key clamping block (7 d), the supporting column (7 e) and is in contact with the trapezoid pushing block (7 c 2), and the key clamping block (7 d) is provided with a screw hole meshed with the screw (7 c 3).

5. A lock with a changeable lock core according to claim 4, characterized in that a plurality of anti-rotation grooves (5 c) are provided on both sides of the unlocking rotation groove (5 a), and the length of the anti-rotation groove (5 c) is smaller than the length of the unlocking rotation groove (5 a).

6. The lock with the changeable lock core according to claim 5, further comprising a lock core changer (4), wherein the lock core changer (4) is used for limiting a key clamping block (7 d), the lock core changer (4) comprises a plug (4 a), a driving swivel (4 b) and at least three arc limiting rings (4 c), the three arc limiting rings (4 c) form a ring structure, when the inner threaded swivel (9 a) needs to be driven to rotate, one end of each arc limiting ring (4 c) is abutted against the inner threaded swivel (9 a), a supporting step (4 c 1) is arranged on the inner side of each arc limiting ring (4 c), a limiting ring (7 h) is arranged on the key clamping block (7 d), one side of each limiting ring (7 h) is in contact with the supporting step (4 c 1), an arc clamping groove (4 c 2) is arranged on one end, far away from the inner threaded swivel (9 a), of each arc limiting ring (4 c) is sleeved on the outer edge of the arc clamping groove (4 c 2), and the plug (4 a) is fixedly arranged on the driving swivel (4 a) to be inserted into the plug (9 a).

7. The door lock with the changeable lock core according to claim 6, wherein the unlocking key (3) comprises a clamping column (3 a), a storage box (3 b), a sliding column (3 c) and a plurality of gaskets (3 d), an unlocking clamping groove which is clamped with the key clamping block (7 d) is formed in the clamping column (3 a), the clamping column (3 a) is fixedly arranged at one end of the storage box (3 b), a containing square hole for containing the gaskets (3 d) is formed in the storage box (3 b), and the sliding column (3 c) is in sliding connection with the storage box (3 b).

8. A lock with a changeable lock core according to claim 7, characterized in that the elastic interference means (6 b) comprises a spring (6 b 1) and a push plate (6 b 2), the spring (6 b 1) being adapted to exert an elastic force on the push plate (6 b 2) close to the catch plate (8).