CN2923923Y - Self-protection anti-theft lock - Google Patents

Abstract

The utility model discloses an against-theft lock head which is provided with lockpin protective body. The against-theft lock head consists of a lock body, a lock core and a lockpin and a restrict device with a restrict lockpin is arranged on more than one lockpins and in the lockhole of the corresponding lock body; For example, the lockpin with a hat is restricted by the sidesteps, or the lockpin with a long rectangular trough is restricted by the convex; In this way, when the central lockpin is destroyed, the restrict of the restrict device of the lockpin is not forced into the keyhole by the springs anymore because of and can be prevented from the attack by the attacking matters from the keyhole so that the utility model has the function of protecting the lockpin, and at this time, the lockpin is positioned in the position of the lock core and makes the lock locked.

Description

The self-shield anti-theft lock end

Affiliated technical field

The utility model relates to the tapered end that the field opens and closes for the control theftproof lock.

Background technology

The structure of present known tapered end is made up of lock body, lock core and lock pin group, with Yale's lock is traditional tapered end of representative,, working stability simple in structure and being widely used with it, but all exist lock pin under the effect of snap, an end of lock pin is emerging in the problem in the keyhole.Insert keyhole by force with hard one word cutter or other instruments during thief's picking lock, the core lock pin is inserted, because the diameter of body lock pin is identical with the core lock pin, so after the core lock pin was inserted, the body lock pin was pushed into keyhole under the effect of snap, the thief is as long as repeat to insert keyhole with picklock, just two lock pins all can be inserted, make tapered end lose lock pin, lock core can rotate arbitrarily, and lock loses anti-theft feature.

In order to protect lock pin; China's patent No. is: the utility model patent of 00111239.2 " a kind of anti-theft lock end " by name; the structure that combines with alarm with " pellet shot from a slingshot lever " is disclosed; but destroyed or in the occasion that alarm can't be installed as alarm, " pellet shot from a slingshot lever " is just lost the effect of protection lock pin.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of tapered end, and the lock pin group of this tapered end is after the core lock pin is destroyed, and the body lock pin is no longer continued to push keyhole by snap, avoids the attack from the attack thing of keyhole.

In order to address the above problem, the technical solution of the utility model is only few on an individual lock pin and in the corresponding lock body lockhole, is provided with a restriction body lock pin is continued to push keyhole by snap stopping means.

This stopping means can be: the lockhole in the lock body is different apertures, and big junction, small-bore produces step, and the lockhole diameter is bigger is in locked end; Body lock pin one end is provided with lock nut, and lock nut places in the big lock hole removable.

This stopping means also can be: be provided with salient point in the lockhole of lock body, body lock pin one side has the cross-sectional sizes strip groove corresponding with salient point of end sealing, and back body lock pin is removable in the salient point embedded groove.

After adopting such structure; after the core lock pin is destroyed; the body lock pin is subjected to the spacing of stopping means; the body lock pin that the body lock pin that for example has a pin cap is subjected to the spacing of step or has a strip groove is subjected to the spacing of salient point; the body lock pin just can no longer be continued to push keyhole by snap, avoids the attack from the attack thing of keyhole, and stopping means plays the effect of protective lock pin; and this moment, the body lock pin was in the position of locking lock core, made the lock locking.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is master of the present utility model, vertical view.

Fig. 2 is the sectional view of first kind of embodiment of I-I of Fig. 1.

Fig. 3 is the sectional view of second kind of embodiment of I-I of Fig. 1.

1. lock bodies among the figure, 2. lock core, 3. keyhole, 4. core lock pin, 5. body lock pin, 6. step, 7. pin cap, 8. snap, 9. lockhole is 10. locked, 11. salient points, 12. cotter ways, 13. grades of faces.

The specific embodiment

Fig. 1 is the main vertical view of tapered end, is made up of lock body 1, lock core 2, and the lock pin group places in locked 10 the lockhole 9.

Fig. 2 is the sectional view of first kind of embodiment, and the lock pin group is made up of core lock pin 4, body lock pin 5,9 one-tenths different apertures of lockhole in the lock body 1, and big junction, small-bore formation step 6, the aperture is bigger is in locked 10 end places.Body lock pin 5 one ends are provided with lock nut 7, and lock nut 7 is in the bigger lockhole in aperture 9, and greatly less than its correspondence, body lock pin 5 is removable.

Fig. 3 is the sectional view of second kind of embodiment, in the lockhole 9 of lock body 1, be provided with the step 6 in salient point 11 alternate figures 2, the strip cotter way 12 of the corresponding size that body lock pin 5 is one side closed with salient point, pin cap 7 in blind end shelves face 13 alternate figures 2 of cotter way, after salient point 11 embedded cotter way 12, body lock pin 5 was removable.

When the thief inserts keyhole 3 by force with picklock; after core lock pin 4 inserted; because it is spacing that body lock pin 5 receives stopping means; be subjected to the shelves face 13 among spacing or Fig. 3 of step 6 to be subjected to the spacing of salient point 11 as the pin cap 7 among Fig. 2, then body lock pin 5 is no longer pushed keyhole 3 by snap 8, makes the thief can't be corrupted to body lock pin 5; realize protective lock pin 5; and body lock pin 5 is in the position of pin fixed lock core 2, plays the locking lock core, makes the effect of lock locking.

Claims (3)

1. a self-shield anti-theft lock end is made up of lock body, lock core and lock pin, it is characterized in that: the stopping means that is provided with a restriction body lock pin on the body lock pin and in the lockhole of lock body.

2. self-shield anti-theft lock end according to claim 1 is characterized in that: described stopping means is that the lockhole in the lock body is made different apertures, and the aperture is bigger is in locked end, and big or small lockhole junction forms step; Body lock pin one end is provided with the pin cap, and the pin cap places in the big lock hole.

3. self-shield anti-theft lock end according to claim 1 is characterized in that: described stopping means is to be provided with salient point in the lockhole of lock body; Body lock pin one side has the cross-sectional sizes strip groove corresponding with salient point of end sealing.

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