CN204311841U - A kind of anti-theft lock - Google Patents

Abstract

The utility model is a kind of anti-theft lock, comprising: external lock core, internal lock core; Wherein internal cylinder part is many sections, independent mutually between each section of lock core, when improper unblanking, outside lock core rotates under external force, and inner side lock core is because of the lock core independent of outside, and the key of its key and outside lock core will misplace, dislocation angle simultaneously between each section of lock core will limit key shape, reduce operating space during key unlocking non-to inside lock core, avoid inner side lock core to be cracked, effectively raise the security performance of lockset.

Description

A kind of anti-theft lock

Technical field

The utility model relates to theftproof lock field, relates to a kind of anti-theft lock especially.

Background technology

Current lock, conventional frame for movement is simple, and the pellet utilizing key to coordinate the length on lock core different, makes pellet circumferentially form a plane at lock core, this plane is concordant consistent with the contact surface of inside and outside lock core, makes interior outer lock core can rotate thus reach object of unblanking.Lock core is in improper situation of unblanking, and because internal cylinder is single entirety, unlocking tool only needs disposable adjustment tumbler positions to open lockset, and safety is lower.In view of above-mentioned defect, the utility model creator obtains this creation finally through long research and practice.

Utility model content

The purpose of this utility model is, provides a kind of anti-theft lock, in order to overcome above-mentioned technological deficiency.

For achieving the above object, the utility model provides a kind of structure simple, easy to operate mechanical anti-theft lock cylinder lock core, and its technical scheme is as follows;

The technical scheme adopted is, provide a kind of anti-theft lock, comprising: external lock core, internal lock core, described internal cylinder portion is positioned at external lock core, it is characterized in that, described internal lock core at least comprises: the first lock core, the second lock core; Described first lock core and the second lock core tandem compound.

Preferably, described first lock core and the second described lock core are respectively provided with a stopping means in correspondence with each other, described stopping means is for limiting the angle that when described first lock core and the second lock core misplace, key is rotated.

Preferably, the stopping means on described first lock core is a protuberance, and described protuberance is positioned at the side corresponding with described second lock core.

Preferably, the phase device on described second lock core is one " L " shape step, and described " L " shape step is positioned at the side corresponding with described first lock core protuberance.

Preferably, the length of side L of " L " shape step on described second lock core, L is less than the diameter of the second lock core.

Compared with the prior art, the beneficial effects of the utility model are, when improper unblanking, owing to rotating when the first lock core is cracked under the effect of external force, second lock core still keeps locking state, the key of the first lock core and the second lock core misplaces, the key through hole space between the second lock core and the first plug keyway is caused to greatly reduce, cause and reduce in the operating space cracked the second lock core, crack tool can not enter the second lock core internal adjustment tumbler positions, effectively raises the safety of lockset.

Accompanying drawing explanation

Fig. 1 is the front view of the utility model anti-theft lock;

Fig. 2 is the inside brief configuration sectional view of the utility model anti-theft lock;

View when Fig. 3 is the unblock of the utility model anti-theft lock first lock core;

Schematic diagram when Fig. 4 is the utility model anti-theft lock second lock core lock-out state;

Fig. 5 is the relative position schematic diagram that the utility model anti-theft lock first lock core and the second lock core occur when misplacing;

Fig. 6 is the functional diagram of the utility model anti-theft lock stopping means;

Fig. 7 is the sectional view of the utility model anti-theft lock first lock core;

Fig. 8 is the sectional view of the utility model anti-theft lock second lock core;

Fig. 9 is the right view of the utility model anti-theft lock second lock core.

Detailed description of the invention

Below in conjunction with accompanying drawing, to above-mentioned being described in more detail with other technical characteristic and advantage of the utility model.

It is emphasized that the utility model application is not limited to concrete field of lockset.

Following examples all using " cross " key as explanation, are equally applicable to the key of other type;

See Fig. 1, Fig. 1 is the front view of the utility model anti-theft lock, and composition graphs 2, Fig. 2 is the inside brief configuration sectional view of the utility model anti-theft lock, Fig. 1 and Fig. 2 omits lock core annex, and the primary structure of anti-theft lock comprises: external lock core 1, internal lock core.Internal lock core is composed in series by the first lock core 2, second lock core 3, and internal lock core also can be set to multiple lock core composition according to needs; External lock core 1 realizes locking, unlocking operation with the first lock core 2, second lock core 3 respectively, when normally unblanking, key injects key, due to the effect between marble hole default on tooth bar on the key and the first lock core 2 and the second lock core 3, key can be good at through the first lock core 2, second lock core 3, and then reaches the object of normally unblanking.View when composition graphs 3, Fig. 3 is the unblock of the utility model anti-theft lock first lock core; When improper unblanking, because the first lock core 2 is opened, rotate between the first lock core 2 and external lock core 1 under the effect of external force.Schematic diagram when being the utility model anti-theft lock second lock core lock-out state see Fig. 4, Fig. 4; Be the key relative position schematic diagram that the utility model anti-theft lock first lock core and the second lock core occur when misplacing see Fig. 5, Fig. 5; Now, be released state between first lock core 2 and external lock core, it is still lock-out state between second lock core 3 and external lock core 1, first lock core 2 rotate under the effect of external force and then and the second lock core 3 between misplace, to decrease between the first lock core 2 with the second lock core 3 the relative space that unlocking tool can be allowed jointly to use mutually formed, carry out cracking operation in the key causing unlocking tool can not enter the second lock core 3.

See Fig. 6, Fig. 6 is the functional diagram of the utility model anti-theft lock stopping means, this stopping means is for realizing dislocation between internal lock core many sections of lock cores and restriction dislocation angle, when the lock core near outside first lock core 2 is cracked, owing to being subject to the impact of applied external force, first lock core 2 can rotate when released state, and the second lock core 3 near inner side is still locking state, first lock core 2, relative rotation is there is between second lock core 3, the key between the first lock core 2 and the second lock core 3 is caused to misplace, by the restriction to dislocation angle, it is avoided to realize overlapping once again between the first lock core 2 with the second lock core 3 by increasing dislocation angle, decrease the operating space of external tool to the work that cracks of the second lock core 3.

See the sectional view that Fig. 7, Fig. 7 are the utility model anti-theft lock first lock core, composition graphs 8, Fig. 8 is the sectional view of the utility model anti-theft lock second lock core; As seen from the figure, the first lock core 2 is provided with a protuberance near the second lock core 3 side, and this protuberance can be a column.Second lock core 3 is provided with one " L " shape step near the first lock core 2 side, and this step is corresponding with the protuberance that the first lock core 2 is preset; Above-mentioned protuberance and " L " shape step interact, when occurring to misplace between the first lock core 2 and the second lock core 3 for limiting, angle is less than 45 degree in relative rotation, angle when rotating between the first lock core 2 and the second lock core 3 is avoided just to make unlocking tool enter in the key of the second lock core 3, to reach the object continuing locking.

Fig. 9 is the right view of the utility model anti-theft lock second lock core, as shown in the figure, and " L " shape step that the second lock core 3 is preset, wherein: L is less than the diameter of the second lock core; When L meets above-mentioned condition, when first lock core 2 and the second lock core 3 occur to misplace, dislocation angle between it is less than 45 degree, angle when rotating between the first lock core 2 with the second lock core 3 is avoided just to make key overlapping, to make unlocking tool enter in the key of the second lock core 3, to reach the object continuing locking.

The foregoing is only preferred embodiment of the present utility model, is only illustrative for the utility model, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes, amendment, even equivalence, but all will fall in protection domain of the present utility model in the spirit and scope that the utility model claim limits to it.

Claims (5)

1. an anti-theft lock, comprising: external lock core, internal lock core, and described internal cylinder portion is positioned at external lock core, it is characterized in that, described internal lock core at least comprises: the first lock core, the second lock core; Described first lock core and the second lock core tandem compound.

2. anti-theft lock as claimed in claim 1, it is characterized in that, the first described lock core and the second described lock core are respectively provided with a stopping means in correspondence with each other, described stopping means is for limiting the angle that when the first described lock core and the second lock core rotate, key misplaces.

3. anti-theft lock as claimed in claim 2, it is characterized in that, the stopping means on the first described lock core is a protuberance, and described protuberance is positioned at the side corresponding with described second lock core.

4. anti-theft lock as claimed in claim 3, it is characterized in that, the stopping means on the second described lock core is one " L " shape step, and described " L " shape step is positioned at the side corresponding with described first lock core protuberance.

5. anti-theft lock as claimed in claim 4, it is characterized in that, the length of side L of the step on described second lock core, L is less than the second lock core diameter.