CN2396147Y

CN2396147Y - Anti-theft lock

Info

Publication number: CN2396147Y
Application number: CN 99245209
Authority: CN
Inventors: 刘元锡
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-10-29
Filing date: 1999-10-29
Publication date: 2000-09-13
Anticipated expiration: 2009-10-29

Abstract

The utility model relates to an anti-theft lock. An anti-theft device is composed of a timer 1, a controlling rod 2 and anti-theft pieces, wherein, the anti-theft pieces 3 are sheathed on the tongue pieces of a lock head of the lock through tongue piece holes 4 above the anti-theft pieces 3; the timer is fixed to the cover pieces 5 of the lock; one end of the controlling rod 2 is fixed to a spring wheel of the timer 1 and the other end is pressed to the anti-theft pieces 3. The utility model has the advantage that the anti-theft function of the cylinder lock is observably enhanced and a skeleton key can not open the lock.

Description

A kind of theftproof lock

The utility model relates to the cylinder lock field.

At present, commercially available cylinder lock is easy to be opened by a kind of master key, and its method is to revolving force of pellet shot from a slingshot lockhole, and pellet shot from a slingshot is carried out heuristic compression to the appropriate location, and pellet shot from a slingshot is just opened one by one, thereby anti-theft feature is low.

The purpose of this utility model is exactly at the low deficiency of cylinder lock anti-theft feature, when unblanking with master key, and the characteristics that the time that needs is long, and a kind of theftproof lock is provided, it can stop effectively with master key unblanks, and improves the anti-theft feature of lock.

Structure of the present utility model comprises cylinder lock and anti-theft device, it is characterized in that: anti-theft device is made up of timer 1, control lever 2 and theft protection plate 3, theft protection plate 3 is enclosed within on the tapered end tongue piece of lock by the tongue piece hole 4 on it, timer 1 is fixed on the cover plate 5 of lock, control lever 2 one ends are fixed on the clockwork spring wheel of timer 1, and the other end is pressed on the theft protection plate 3.

Advantage of the present utility model is: the anti-theft feature of this cylinder lock significantly strengthens, and can not open with master key.

Accompanying drawing is the utility model structural representation.

Embodiment:

Timer adopts commercially available general timer, control lever 2 and theft protection plate 3 adopt the machine manufacturing to form, and timer are fixed on above the cover plate of lock, theft protection plate 3 are enclosed within on the tongue piece of lock, thick stick system bar 2 one ends are fixed on the clockwork spring wheel of timer 1, and the other end is pressed on the theft protection plate 3.When antitheft operating principle of the present utility model is based on and unblanks with master key, owing to need carry out heuristic compression one by one to pellet shot from a slingshot, open one by one, thereby required time is longer, as need with double key operated lock, its lock has two row's pellets shot from a slingshot, to lock anti-three-sixth turn during use, when opening first row's pellet shot from a slingshot with master key, rotatable 180 degree of tapered end, when tapered end rotates, drive on it theft protection plate rotate, the control lever that is pressed on the theft protection plate also begins to move down, timer is triggered simultaneously, in 5 seconds, then the time of opening second row's pellet shot from a slingshot with master key must just can be opened cylinder lock within 5 seconds, otherwise will be under the effect of timer as the timing of timer, control lever will be stuck on the theft protection plate card bank 6 after 5 seconds, the tapered end tongue piece can't be rotated further, and lock also just can't be opened, and almost is impossible and open second row's pellet shot from a slingshot with master key in 5 seconds.Have only this moment with the key of this lock the tapered end turnback could be reduced the original state of this lock.And when opening, make the tapered end of this lock revolve 5 seconds of three-sixth turn less than service time with the key of this lock, thereby control lever will can not be stuck on the card bank 6 of theft protection plate, thereby can open this lock.This anti-theft device is suitable for " double " " Y shape " " cross " cylinder lock, and the marble row numbers of lock is many more, and anti-theft feature is strong more.Need the anti-three-sixth turn of tapered end during the lock lock.

Claims

1, a kind of theftproof lock, comprise cylinder lock and anti-theft device, it is characterized in that: anti-theft device is made up of timer (1), control lever (2) and theft protection plate (3), theft protection plate (3) is enclosed within on the tapered end tongue piece of lock by the tongue piece hole (4) on it, timer (1) is fixed on the cover plate (5) of lock, control lever (2) one ends are fixed on the clockwork spring wheel of timer (1), and the other end is pressed on the theft protection plate (3).