CN2339681Y

CN2339681Y - Anti-theft lock-protective device

Info

Publication number: CN2339681Y
Application number: CN 97238854
Authority: CN
Inventors: 楚正湘
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-09-09
Filing date: 1997-09-09
Publication date: 1999-09-22
Anticipated expiration: 2007-09-09

Abstract

The utility model relates to a theftproof lock protecting device, which solves the disadvantage that an exposed lock core is easy to drill bad or sundries can be plugged in the lock core at present. A staircase-shaped hole arranged in an outer shell for holding the lock core is used for clamping the outer shell on a door lock, a cover plate slideway in the outer shell 1 is movably provided with a lock core cover plate, and a restoring spring is arranged between the lock core cover plate and the outer shell. A clamping notch on the cover plate corresponds to a positioning steel ball arranged in the outer shell, a handle on the cover plate is extended out of the outer shell, the end part of the outer shell is provided with the lock core, and the lower end of the lock core is provided with a deflector rod which is extended toward the positioning steel ball via a shaft. The utility model having the advantages of simple structure, convenient operation and high theftproof performance can be arranged on the door lock.

Description

Anti-theft lock-protective device

The utility model relates to a kind of antitheft Lock protector.

Present various door lock emerges in an endless stream, most typical theftproof lock is a cross lock core, though this theftproof lock can prevent to prepare key and plug in the lock that opens the door, but thief has used electric drill to bore bad lock core at present, and door-lock opening is carried out stealthy activity, cause very big loss for people's property, this in addition traditional lock core hole stays hidden danger after exposing and also to some others' door lock stopple being advanced foreign material, causes daily life to cause very big trouble.

The purpose of this utility model is to provide a kind of can prevent to bore lock core and to the Anti-theft lock-protective device of lock core hole and plug foreign material.

The utility model is finished with following mode: Anti-theft lock-protective device, it comprises shell 1, cover plate slideway 12 movable installing lock core covers 2 are arranged in shell 1, on shell 1, have through lock core shoulder hole 9, handle 3 on the lock core cover 2 stretches out shell 1, has bayonet socket 10 correspondences and be installed in locking ball 5 in the shell 1 on lock core cover 2, and lock core 8 is housed on shell 1, with axle driving lever 7 is housed in lock core 8 lower ends and stretches to locking ball 5, between lock core cover 2 and shell 1, back-moving spring 4 is housed.There is back-moving spring slideway 12 both sides of shell 1 inner cover plate slideway 12, and the both sides of lock core cover 2 are stepped, are equipped with respectively in back-moving spring slideway 12 between the stepped end and shell 1 that back-moving spring 4 withstands on lock core cover 2.Be connected with the handle 3 that semicircle orifice 13 is put on the lock core cover 2 in the 9 symmetrical both sides of the lock core shoulder hole on the shell 1.

The utility model Anti-theft lock-protective device adopts and install a cover Lock protector additional on existing lock core, can prevent with lock core brill evil idea and with door-lock opening, it adopts additional lock core transmission locking ball to open the main lock core cover plate, the material that lock core cover adopts the high-quality steel to heat-treat is difficult for drilled bad, has very strong antitheft effect, also the main lock core hole is covered in simultaneously and can prevent the detent plug foreign matter, fill in foreign material and also do not influence and open lock cap and add lock core hole.It has simple in structure, and is easy to use, and cost is low, and theftproof is stronger, is applicable on all kinds of door locks to install.

Fig. 1 is the utility model structural representation

Fig. 2 is the A-A sectional view of Fig. 1

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

As Fig. 1, shown in Figure 2, the utility model Anti-theft lock-protective device is to have through lock core shoulder hole 9 by the middle part on the shell 1, the lock core of door lock is inserted in the shoulder hole 9, Anti-theft lock-protective device is installed on the door lock, lock core cover slideway 11 movable installing lock core covers 2 are arranged in shell 1, lock core cover 2 is removable to be hidden lock core or open, there is semicircle orifice 13 symmetrical both sides at shoulder hole 9, there is handle 3 to be seated on the lock core cover 2 and stretches out shell 1 in the semicircle orifice 13, there are bayonet socket 10 correspondences to be contained in locking ball 5 in the shell 1 on the termination of lock core cover 2, and lock core 8 is housed on the end of shell 1, stretch to locking ball 5 in lock core 8 lower ends with axle installing driving lever 7, locking ball 5 is contained in the hole in the shell 1, the spring 6 roof pressure steel balls 5 in the hole.In the both sides of lock core cover 2 is stepped, and the both sides of cover plate slideway 11 have spring slide-way 12 to install back-moving spring 4 respectively, and back-moving spring 4 roof pressures are between cover plate 2 and shell 1, and lock core cover adopts steel after heat treatment, has very strong anti-drilling property.Use is: hand-held handle 3 drags elastic force that cover plate 2 overcomes back-moving spring 4 and moves up to the bayonet socket on the cover plate 2 10 and be stuck on the steel ball 5 after locking door lock, cover plate 2 location are covered on lock core, at this moment just can prevent that electric drill from boring bad lock core and fill in foreign material in lock core hole, if and after in additional lock core 8, filling in foreign material, injecting lock core hole with key can eject lock core hole with foreign material and drop in the shell, rotational lock core 8 drives the driving levers 7 roof pressure locking ball 5 that advances, make steel ball 5 press down the bayonet socket 10 that breaks away from the cover plate 2, cover plate 2 resetted under the effect of its both sides spring 4 and left lock core hole this moment, in the withdrawal shell 1, this moment, lock core exposed, and conveniently turned the key in the lock.

Claims

1. Anti-theft lock-protective device, it comprises shell [1], it is characterized in that in shell [1], having the movable installing of cover plate slideway [12] lock core cover [2], on shell [1], have through lock core shoulder hole [9], handle [3] on the lock core cover [2] stretches out shell [1], on lock core cover [2], have bayonet socket [10] correspondence and be installed in locking ball [5] in the shell [1], lock core [8] is housed on shell [1], with axle driving lever [7] is housed in lock core [8] lower end and stretches to locking ball [5], between lock core cover [2] and shell [1], back-moving spring [4] is housed.

2. according to the described Anti-theft lock-protective device of claim 1, there is back-moving spring slideway [12] both sides that it is characterized in that shell [1] inner cover plate slideway [12], the both sides of lock core cover [2] are stepped, are equipped with respectively in back-moving spring slideway [12] between the stepped end and shell [1] that back-moving spring [4] withstands on lock core cover [2].

3. according to the described Anti-theft lock-protective device of claim 1, it is characterized in that being connected with semicircle orifice [13] and put handle [3] on the lock core cover [2] in the symmetrical both sides of lock core shoulder hole [9] on the shell [1].