CN2184741Y

CN2184741Y - Anti-theft cylinder lock

Info

Publication number: CN2184741Y
Application number: CN 94206077
Authority: CN
Inventors: 左终冬
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-26
Filing date: 1994-02-26
Publication date: 1994-12-07
Anticipated expiration: 2004-02-26

Abstract

The utility model relates to an anti-theft cylinder lock, relating to an accessory in connection with a lock, particularly a device which is arranged in a cylinder hole in a lock body. The well known, the general cylinder lock can be opened easily by a master key. The utility model achieves the anti-theft effect by that the inner part of the spring of the cylinder hole in the lock body is provided with a steel wire stick with the definite length, the utility model especially does not need to change the original lock making technology, and hardly increases the cost of the original lock.

Description

Anti-theft cylinder lock

The utility model relates to the annex relevant with lock, particularly relates to the device in the pellet shot from a slingshot hole in the lock body.

Chinese patent 8720347.0 discloses a kind of insurance cylinder lock, and it adorns a steel wire lateral pin by boring an aperture in the lock body bottom in aperture, and the aperture outer end is sealed with epoxy resin.Undoubtedly, this patented technology can prevent effectively that will lock key with master key opens.But increased punching and closing step, the lock cost is increased.

The utility model provides a kind of antitheft sylinder according to the deficiency of above-mentioned prior art, prevents to use the master key key to unblank in the purpose reaching, and does not need to increase the cost of lock.

The utility model is in the spring in the pellet shot from a slingshot hole in the lock body of common cylinder lock a steel wire rod to be set, and the pellet shot from a slingshot length sum in the length of steel wire rod and the lock body should be less than or equal to the degree of depth in the interior pellet shot from a slingshot hole of lock body.

Accompanying drawing 1 is the utility model sectional structure schematic diagram;

Below in conjunction with accompanying drawing the utility model is described in detail:

Show that as accompanying drawing 1 the utility model mainly is made of lock body (5), lock bridge (4), lock core (6).Inventive point of the present utility model is equipment one a steel wire rod (2) in the spring (3) of in lock body pellet shot from a slingshot hole (7), and the length of steel wire rod (2) and pellet shot from a slingshot (1) length sum are less than or equal to the degree of depth of shell hole (7).The utility model advantage is only to need that the steel rod of certain-length is put into the pellet shot from a slingshot hole to get final product when the encapsulation pellet shot from a slingshot, therefore, needs to increase former lock cost hardly.Certainly, the steel wire rod all might not be placed in all pellet shot from a slingshot holes, apparent, place 1 at least and can reach the effect that prevents the general-purpose key unlocking.

Claims

1, a kind of antitheft sylinder mainly is made of lock body, lock bridge, lock core, it is characterized in that in the spring in pellet shot from a slingshot hole in the lock body steel wire rod being set, and the pellet shot from a slingshot length sum in the length of steel wire rod and the lock body is less than or equal to the degree of depth in the interior pellet shot from a slingshot hole of lock body.