CN2825855Y

CN2825855Y - Theft-proof lock core

Info

Publication number: CN2825855Y
Application number: CN200520076702.4U
Authority: CN
Inventors: 李铭
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-10-22
Filing date: 2005-10-22
Publication date: 2006-10-11
Anticipated expiration: 2015-10-22

Abstract

The utility model relates to a theft-proof lock core which solves the problems that the utility model provides a theft-proof lock core with simple structure which can not be opened by a universal key. The theft-proof lock core is characterized in that a lock core body is correspondingly provided with a pin tumbler bore which penetrates a side wall. The outer side wall of the lock core body which is corresponding to the pin tumbler bore is provided with a key hole slot which is concave inwards. The inner side of the pin tumbler bore is provided with two pin tumblers, and the upper pin tumbler is a long pin tumbler. The utility model has the beneficial technical effects of simple structure, low cost and can not be opened by using the universal key. Theft-proof performance is extremely strong.

Description

Anti-theft lock

Technical field

The utility model relates to anti-theft lock.

Background technology

In order to solve antitheft problem, people have designed multiple theftproof lock.Chinese patent CN2357080 discloses a kind of theftproof lock, and characteristics are: the side at the following dead bolt of lock core composite member is provided with a pick-proof dead bolt, is provided with a block between two dead bolts, and block top is provided with a pick-proof baffle plate, constitutes pick-proof mechanism thus.And for example: Chinese patent CN2634035 discloses a kind of anti-theft lock, characteristics are: it mainly comprises lock core shell, preceding back-up ring, back back-up ring, lock core fixing hole and connecting rod etc., in lock core shell, be provided with the lock core rotor of sectional, the junction of lock core rotor leading portion and lock core rotor back segment is respectively equipped with alignment pin, rotary spacing groove, and alignment pin and rotary spacing groove are movably connected.

Summary of the invention

The purpose of this utility model is: a kind of anti-theft lock simple in structure, that can't open with master key is provided.

Concrete structure is as follows:

Anti-theft lock comprises lock core body, lock core rotor, pellet shot from a slingshot and spring, and spring and pellet shot from a slingshot are loaded in the pellet shot from a slingshot hole on the lock core rotor successively, it is characterized in that: uniform the pellet shot from a slingshot hole that makes progress, footpath, described lock core rotor middle part, and its axial two ends extend outside the lock core body; The pellet shot from a slingshot hole of corresponding lock core rotor is provided with the pellet shot from a slingshot hole of running through sidewall on the lock core body; The lock core body lateral wall corresponding with the pellet shot from a slingshot hole is provided with the keyhole groove, keyhole groove indent; Be provided with two pellets shot from a slingshot in the pellet shot from a slingshot hole, the pellet shot from a slingshot on top is a long marble, and the length of long marble is the radius that is equal to or greater than lock core rotor; The hole depth in the pellet shot from a slingshot hole on the lock core body equals the lock core rotor radius.

Useful technique effect of the present utility model is: simple in structure, low cost of manufacture is unblanked by lock core rotor, and it is big to destroy difficulty, and pick-proof, anti-drilling performance are strong, use master key to open, and theftproof performance is extremely strong.This anti-theft lock is especially suitable for use as safe-guard door lock.

Description of drawings

Fig. 1 is the utility model structural representation,

Fig. 2 cuts open figure for the A-A of Fig. 1,

Fig. 3 is the vertical view of Fig. 1.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

Embodiment:

By Fig. 1, Fig. 2 and Fig. 3 as seen, anti-theft lock comprises lock core body 2, lock core rotor 1, pellet shot from a slingshot 4 and spring 5.Uniform the pellet shot from a slingshot hole that makes progress, the footpath of lock core rotor 1, its axial two ends extend outside the lock core body; The corresponding pellet shot from a slingshot hole of running through sidewall that has on the lock core body 2; Have keyhole groove 3 on the lock core body lateral wall corresponding with the pellet shot from a slingshot hole, keyhole groove 3 is an inner groovy; Two pellets shot from a slingshot 4 are housed in the pellet shot from a slingshot hole, and the pellet shot from a slingshot 4 on top is a long marble, and the length of long marble is the radius that is equal to or greater than lock core rotor 1; The hole depth in the pellet shot from a slingshot hole on the lock core body 2 equals the lock core rotor radius.

In the use, in the time of in key inserts keyhole groove 3, long marble is pressed into the pellet shot from a slingshot of bottom in the pellet shot from a slingshot hole of lock core rotor 1, and at this moment, rotational lock core rotor 1 can be opened lock.

In the time of in master key inserts keyhole groove 3, the bottom pellet shot from a slingshot all can not be pressed in the pellet shot from a slingshot hole of lock core rotor 1, can't rotational lock core rotor 1, so can't open lock.

Claims

1, anti-theft lock comprises lock core body, lock core rotor, pellet shot from a slingshot and spring, and spring and pellet shot from a slingshot are loaded in the pellet shot from a slingshot hole on the lock core rotor successively, it is characterized in that: uniform the pellet shot from a slingshot hole that makes progress, footpath, described lock core rotor middle part, and its axial two ends extend outside the lock core body; The pellet shot from a slingshot hole of corresponding lock core rotor is provided with the pellet shot from a slingshot hole of running through sidewall on the lock core body; The lock core body lateral wall corresponding with the pellet shot from a slingshot hole is provided with the keyhole groove, keyhole groove indent; Be provided with two pellets shot from a slingshot in the pellet shot from a slingshot hole, the pellet shot from a slingshot on top is a long marble, and the length of long marble is the radius that is equal to or greater than lock core rotor; The hole depth in the pellet shot from a slingshot hole on the lock core body equals the lock core rotor radius.