CN101004113B

CN101004113B - Safety lock guarding against unlocking and breaking open

Info

Publication number: CN101004113B
Application number: CN200710034224A
Authority: CN
Inventors: 雷先鸣
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-08
Filing date: 2007-01-08
Publication date: 2010-05-19
Anticipated expiration: 2027-01-08
Also published as: CN101004113A

Abstract

The present invention relates to a safety lock capable of resisting illegitimate unlocking and picking. Said safety lock includes the following several portions: lock body, lock core placed in the lock body interior, said lock core is divided into front lock core and rear lock core, in the front lock core interior two rows of balls with V-shaped groove are symmetrically set, and a locking side column is set, said locking side column can be matched with said V-shaped groove, on the front lock core a slide block slideway is set, said slide block slideway is communicated with the locking side column groove; on the rear lock core a locking pin slideway is set, said locking pin slideway is correspondent with the front lock core slide block slideway: in the slide block slideway interior a slide block is set, said locking pin slideway has an end wall in the tail portion of rear lock core, between the end wall of locking pin slideway and locking pin a locking pin reset spring is set. Besides, said invention also provides the working principle of said safety lock and its concrete operation method.

Description

The safety lock head of guarding against unlocking and breaking open

Technical field

The invention belongs to mechanical lock, relate to a kind of safety lock head of guarding against unlocking and breaking open.

Background technology

Aspect lockset, cylinder lock is the most widely used product always.In the existing cylinder lock, a kind of match locking side column mechanism of incompatible control lock core open and close of employing is provided with locking side column and band V-shaped groove on lock core pellet shot from a slingshot of locking is arranged, solved the weakness of not anti-skilled unlocking of traditional mechanical cylinder lock and sled twistlock core preferably, its structure can be referring to the ZL99115581.5 patent documentation.But this lock still exists and is difficult to resist the problem that destructive brute force is unblanked.If the unlocking tool that working strength is enough big reverses lock core by force, can with on the door fixedly the bolt of tapered end twist off.And this lock has only row's pellet shot from a slingshot, is being subjected to certain limitation aspect the mutual opening rate reducing.

Summary of the invention

The objective of the invention is provides a kind of safety lock head of guarding against unlocking and breaking open at above-mentioned situation, and this tapered end is under locking states, and lock core can freely rotate with respect to lock body and sword iron, and has lower mutual opening rate.

The present invention seeks to realize like this: the safety lock head of guarding against unlocking and breaking open comprises lock body, lock core in the lock body, lock core and rear lock core before lock core is divided into, be arranged with the pellet shot from a slingshot of double band V-shaped groove and the locking side column that can match in the preceding lock core with V-shaped groove on the pellet shot from a slingshot, the slide block chute that communicates with the locking side column groove is set on preceding lock core, on rear lock core with the corresponding lock pin chute that is provided with of preceding lock core slide block chute, the lock pin chute has an end wall at the afterbody of rear lock core, place sliding shoe in the slide block chute, contact for the inclined-plane between sliding shoe and the locking side column, place lock pin in the lock pin chute, the lock pin back-moving spring is set between end wall in the lock pin chute and the lock pin, the corresponding breach that has on the lock body afterbody is used for the step of rear lock core stop bit with the lock pin chute, lock pin in the lock pin chute can match with this breach, the length of sliding shoe is to determine like this: when locking side column not the time with position that the pellet shot from a slingshot V-shaped groove matches, the contact surface of sliding shoe and lock pin just is on the contact surface of front and back two lock cores.

The operating principle of tapered end of the present invention: during locking, lock core marble makes locking side column radially outward move along lock core, its inclined-plane forces sliding shoe to do axially outwards to move along lock core, sliding shoe promotes lock pin again and outwards moves, make the contact surface of sliding shoe and lock pin just be in before and after the interface of two lock cores, lock pin then extend in the breach on the lock body afterbody step, the preceding relative rear lock core of lock core can relatively rotate, realize idle running, rear lock core then fuses by lock pin and lock body, and lock can not be opened; When inserting key unlocking, lock core marble makes locking side column radially inwardly move along lock core, under the effect of lock pin back-moving spring, lock pin and sliding shoe together along lock core shaft to inwardly moving, before the contact surface of sliding shoe and lock pin returns in the lock core, withdraw from the breach of lock pin from the lock body afterbody step simultaneously, at this moment front and back lock core fuses by lock pin, can rotate relative to lock body, realize the purpose of unblanking.

The present invention is owing to adopt former and later two lock cores, when utilizing in the axial direction the motion of sliding shoe and lock pin, both contact surfaces are in diverse location, and simultaneously lock pin is in the position that whether cooperates with breach on the lock body afterbody step, thereby realize the clutch between two lock cores.If use non-matching key to unblank, can only drive preceding Lock cylinder idling behind the insertion lock core, the rear lock core that is fixed with sword iron is rotated.External force can't be unblanked and a destructive difficult problem of unblanking thereby solved brute force completely by acting on lock body or rear lock core before the lock core, improved the theftproof performance of lock greatly.Again owing to adopted double pellet shot from a slingshot, therefore can reduce mutual opening rate half, the safety that further improves lock.

Further specify technical solution of the present invention below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is a structural representation of the present invention.

Fig. 2 is the different user mode schematic diagrames of Fig. 1.

The specific embodiment

See Fig. 1, the safety lock head of guarding against unlocking and breaking open comprises lock body 2, preceding lock core 6 and rear lock core 12, be arranged with the pellet shot from a slingshot 4 of double band V-shaped groove 15 and the locking side column 3 that can match in the preceding lock core 6 with V-shaped groove on the pellet shot from a slingshot 15, be pressed with spring 5 on the locking side column 3, the slide block chute 13 that communicates with the locking side column groove is set on preceding lock core 6, on rear lock core 12 with the preceding lock core slide block chute 13 corresponding lock pin chutes 9 that are provided with, lock pin chute 9 has an end wall 10 at the afterbody of rear lock core, place sliding shoe 1 in the slide block chute 13, contact for inclined-plane 11 between sliding shoe 1 and the locking side column 3, place lock pin 14 in the lock pin chute 9, between end wall 10 in lock pin chute 9 and the lock pin 14 lock pin back-moving spring 8 is set, on lock body 2 afterbodys are used for the step of rear lock core 12 stop bits with two lock pin chutes, the 9 corresponding breach 7 that all have, lock pin 14 in the lock pin chute 9 can match with this breach 7, the length of sliding shoe 1 is to determine like this: when locking side column 3 not the time, before and after the contact surface 16 of sliding shoe 1 and lock pin 14 just is on the contact surface 17 of two lock cores with position that V-shaped groove 15 on the pellet shot from a slingshot 4 matches.

During the tapered end locking, V-shaped groove 15 on the double V-shaped groove pellet shot from a slingshot 4 in the preceding lock core 6 is out-of-line, two locking side column 3 are radially outward backed down by pellet shot from a slingshot 4, sliding shoe 1 that contacts with locking side column 3 inclined-planes 11 and lock pin 14 overcome the contact surface 16 that back-moving spring 8 makes both and are in the position that overlaps with front and back two lock core contact surfaces 17, and the end of lock pin 14 is in the position of matching with breach 7 on the lock body afterbody step, at this moment, preceding lock core 6 relative rear lock cores 12 can dally, rear lock core 12 fuses and can not rotate by lock pin 14 and lock body 2, and lock can not be opened; State when unblanking is seen Fig. 2, lock core 6 before key inserts, make V-shaped groove 15 alignment on the double V-shaped groove pellet shot from a slingshot 4 in the lock core 6, two locking side column 3 radially inwardly stretch under the effect of spring 5 in the V-shaped groove 15 of pellet shot from a slingshot 4, lock pin 14 and sliding shoe 1 be axially inwardly motion under the effect of back-moving spring 8, position before both contact surfaces 16 are in the lock core 6, and the end of lock pin 14 be in lock body afterbody step on the position that is separated of breach 7, at this moment, preceding lock core 6 fuses by lock pin 14 and rear lock core 12, can rotate relative to lock body 2.

Claims

1. the safety lock head of a guarding against unlocking and breaking open, comprise lock body, lock core in the lock body, it is characterized in that lock core is divided into preceding lock core and rear lock core, be arranged with the pellet shot from a slingshot of double band V-shaped groove and the locking side column that can match in the preceding lock core with V-shaped groove on the pellet shot from a slingshot, the slide block chute that communicates with the locking side column groove is set on preceding lock core, on rear lock core with the corresponding lock pin chute that is provided with of preceding lock core slide block chute, the lock pin chute has an end wall at the afterbody of rear lock core, place sliding shoe in the slide block chute, contact for the inclined-plane between sliding shoe and the locking side column, place lock pin in the lock pin chute, the lock pin back-moving spring is set between end wall in the lock pin chute and the lock pin, the corresponding breach that has on the lock body afterbody is used for the step of rear lock core stop bit with the lock pin chute, lock pin in the lock pin chute can match with this breach, the length of sliding shoe is to determine like this: when locking side column not the time with position that the pellet shot from a slingshot V-shaped groove matches, the contact surface of sliding shoe and lock pin just is on the contact surface of front and back two lock cores.