CN2739305Y

CN2739305Y - Anti-prizing lock head

Info

Publication number: CN2739305Y
Application number: CN 200420108704
Authority: CN
Inventors: 刘家明; 杜庆平
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-15
Filing date: 2004-11-15
Publication date: 2005-11-09
Anticipated expiration: 2014-11-15

Abstract

The utility model relates to an anti-prizing lock head, comprising a lock core, an inner sleeve, and a housing. The lock core and the inner sleeve are provided with a marble and a spring. The lock core and the fixed pin of the inner sleeve are in movably joint by a radical direction chute. The inner sleeve can carry out the axial position by a spring collar fixed on the housing. The inner sleeve is connected with the housing by a clutch mechanism. The clutch mechanism is a roller latch-spring combination component or a magnet combination component. When the key is in normal use for unlocking, the clutch mechanism lies in the coincidence state owing to the functions of the spring damping or the magnetic attracting force. The inner sleeve and the housing are integrated together. When the abnormal theft takes place, the extra moment exceeds the damping or magnetic attracting force between the combination components of the clutch mechanism. When the theft tool forcibly twists or prizes the lock core, the inner sleeve makes the combination components of the clutch mechanism separate owing to bearing the oversize moment. Therefore, the inner sleeve and the housing are separate. The inner sleeve and the lock core carry out the idle rotation together in the housing, so the lock is unable to open to reach the goal of anti-prizing and anti-theft.

Description

Anti-prizing type lock

Technical field

The utility model relates to a kind of anti-prizing type lock, belongs to field of lockset.

Background technology

In the daily life, because of door, the cabinet door, drawer-lock is caused indoor property stolen or made bicycle by sled because of lock by sled, the situation that motorcycle is stolen occurs repeatedly, the burglar unblanks to commit theft by the mode that sled is ruined tapered end, this is because there is common defective in the structure of present various tapered ends, the interior cover that is tapered end is connected with steady pin with shell is many, when adopting sled to steal instrument lock core is imposed big moment, steady pin is promptly twisted off, tapered end is promptly disintegrated, lock core loses supporting and can withdraw from snap close, make sled steal success, the burglar succeeds, but people urgently wish to design a kind of tapered end of pick-proof for this reason.

Summary of the invention

The purpose of this utility model provides a kind of anti-prizing type lock, and this tapered end is subjected at lock core can not causing disintegration under the situation of bigger moment of face, and making sled steal instrument can not unblank easily.

This anti-prizing type lock comprises lock core, interior cover and shell, lock core with in be arranged with pellet shot from a slingshot and spring, lock core flexibly connects with the steady pin of footpath down fold and interior cover, and interior cover is by being fixed on the spring collar axial location on the shell, links to each other by clutch between interior cover and the shell.

Said clutch can be one of following structure:

Clutch is to bump pearl-spring assembly, it by be located in the shell inboard groove bump pearl and with it the spring in the interior cover outside groove of position correspondence form, the two is tight against mutually.

Clutch also can be the group of magnets component, it by place in the shell inboard groove magnet and with it the magnet in the interior cover outside groove of position correspondence forms, the two magnet poles reversal are provided with, mutual adhesive.

The composite member of above-mentioned clutch under normal circumstances is in the state that is harmonious because of the effect of spring damping or magnetic attraction, and cover becomes as a whole with shell in this moment; When producing improper sled and steal behavior, the moment that adds has substantially exceeded damping or the magnetic attraction between the clutch composite member, makes in the composite member the two disconnected from each other with interior cover and shell respectively.Therefore, when normally unblanking with this lock original key or shutting, interior cover and shell are the fixture that fuses, and at this moment, lock core rotates under the key effect, and advances or setback with respect to interior interplanting, reach to unblank or the purpose of locking; When the instrument of stealing with sled twists by force or prizes lock core, because of interior cover is subjected to excessive moment, the composite member of clutch is separated, interior cover is with together idle running in the enclosure of lock core, and lockset can't be opened (equally also can't locking).Therefore to steal instrument inoperative to this tapered end for common sled, and the burglar is cannot succeed, and plays pick-proof, antitheft effect.Still remain intact after this tapered end is prized and do not disintegrate, do not influence continuation and unblank with original key.

Description of drawings

Fig. 1 is the embodiment cross-sectional view of the utility model anti-prizing type lock, bumps pearl-spring assembly among the figure for axially settling.Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 represents that the group of magnets component is the embodiment schematic diagram of clutch.

Among each figure: the 1-lock core, the 2-spring collar, 3 interior covers, the 4-shell, the 5-steady pin, the 6-skewed slot, 7-spring, 7 '-pellet shot from a slingshot, 8-bumps pearl-spring assembly (clutch), 9-group of magnets component (clutch).

As shown in Figure 1 and Figure 2, lock core 1, interior cover 3 and shell 4 socket successively, one end of interior cover 3 is fixing with spring collar 2, in be clutch between cover 3 and the shell 4 to bump pearl-spring assembly 8, this clutch is made up of the spring that bumps pearl and be located in interior cover 3 grooves that is located in shell 4 grooves, and spring is tight against and bumps pearl.Under normal circumstances, spring crash the thrust of pearl make in cover 3 fuse with shell 4.After inserting from the keyhole of lock core 1 with this lock matched key, each spring 7, pellet shot from a slingshot 7 ' reached the setting position respectively by the extruding of the shaggy tooth of key, lock core 1 can rotate in interior cover 3 with key, and skewed slot 6 slides with respect to steady pin 5 and makes lock core 1 axially displaced simultaneously, realizes unblanking or locking.When non-of insertion in the lock core 1 is locked supporting key or is prized the instrument of stealing, spring 7 and pellet shot from a slingshot 7 ' can not reach desired location, then lock core 1 can't normally rotate and unblank; When sled is stolen the person when prizing lock core by force, cover 3 in bigger moment drives by lock core 1, interior cover is stressed and make and bump pearl one spring assembly 8 and breaks away from mutually, and cover 3 together dallies in shell 4 with lock core 1 in this moment, still do not drive lock, but tapered end can not disintegrate.In this example, spring-bump pearl composite member 8 for axially installing also can adopt the mode of radially settling, and can establish one or more groups.

Clutch in Fig. 3 represents between cover 3 and the shell 4 is a group of magnets component 9, this clutch is made up of two magnet that are located at respectively in shell 4 and interior cover 3 grooves, the binding end polarity of two magnet is opposite, therefore between the normal condition lower magnet and firmly inhale mutually, cover 3 and shell 4 are combined into one in making, and when being subjected to sled and stealing, two magnet are separated by force, interior cover 3 breaks away from shell 4, with lock core 1 corotation, can't unblank.In this example, group of magnets component 9 can be established one or more groups for radially settling.

Claims

1. anti-prizing type lock, comprise lock core (1), interior cover (3) and shell (4), lock core with in be arranged with pellet shot from a slingshot (7 ') and spring (7), lock core (1) flexibly connects with the steady pin (5) of footpath down fold (6) with interior cover (3), it is characterized in that interior cover (3) by being fixed on spring collar (2) axial location on the shell (4), link to each other by at least one clutch between interior cover (3) and the shell.

2. anti-prizing type lock according to claim 1 is characterized in that clutch is to bump pearl-spring assembly (8), it by be located in the shell inboard groove bump pearl and with it the spring in the interior cover outside groove of position correspondence form, the two is tight against mutually.

3. anti-prizing type lock according to claim 1, it is characterized in that clutch is group of magnets component (9), it by place in shell (4) inboard groove magnet and with it the magnet in interior cover (3) outside groove of position correspondence forms, the two magnet poles reversal are provided with, mutual adhesive.

4. according to claim 1 or 2 or 3 described anti-prizing type locks, it is characterized in that clutch radially settles.

5. according to claim 1 or 2 or 3 described anti-prizing type locks, it is characterized in that clutch axially settles.