CN2233444Y

CN2233444Y - Anti-theft lock

Info

Publication number: CN2233444Y
Application number: CN 95221564
Authority: CN
Inventors: 邓振颖
Original assignee: INDUSTRIAL TRADE CORP SANYA CITY
Current assignee: INDUSTRIAL TRADE CORP SANYA CITY
Priority date: 1995-09-15
Filing date: 1995-09-15
Publication date: 1996-08-21
Anticipated expiration: 2005-09-15

Abstract

The utility model discloses an anti-drilling and theftproof lock which is used for strongboxes. The outer end of a cross lock head is provided with an anti-picking sheet, the anti-drilling sheet and the cross lock head are sheathed with an anti-drilling bushing externally, and the anti-drilling bushing is installed on a strongbox door. Relative rotary gaps are arranged between the anti-drilling sheet and the anti-drilling bushing as well as between the anti-drilling sheet and the cross lock head. When a lock core is drilled by a larcener, the anti-drilling sheet and a drill head rotate together, and the drill head can not be drilled in the lock core. The anti-drilling bushing made of steel materials is treated in quenching treatment, and the rigidity of the anti-drilling bushing drilled immovably is high. The utility model has the advantages of simple structure, double anti-drilling and theftproof protection functions, and safety, and the utility model is suitable for the doors of the living rooms, cabinets, and especially strongboxes.

Description

A kind of drill-preventive anti-theft lock

The utility model relates to a kind of drill-preventive anti-theft lock, is applicable to safety cabinet and Hu Men.

Used Cross lock anti-theft feature is stronger, the tongue that Cross lock stretches out is stirred the gear rotation of its linkage, the both sides of gear respectively establish a toothed rack and with its engagement, tooth bar is connecting latch, so when key is stirred Cross lock, its tongue is dialled commentaries on classics gear driven tooth bar and latch is done rectilinear motion, and latch is inserted in the pin hole of doorframe, pins; The lock core of Cross lock is generally used copper production, and lock core and lock body are all softer; The thief often uses the method for drilling that its destruction is gone smoothly.

The purpose of this utility model is to have set up anti-drilling sheet and anti-drill bushing in the Cross lock outer end for overcoming above-mentioned weak point, and the safeguard protection effect has fully been played in dual anti-drilling protection.

The utility model content, drill-preventive anti-theft lock are to establish anti-drilling sheet in the Cross lock outer end, the anti-drilling cover of suit outside anti-drilling sheet and Cross lock, and this anti-drill bushing is installed on the safe door.

Be provided with relatively turnable gap between the anti-drilling sheet of drill-preventive anti-theft lock and anti-drill bushing, Cross lock.The material of anti-drill bushing is steel and through Quenching Treatment.

The utility model advantage, because cover is being adorned anti-drill bushing on the Cross lock, this anti-drill bushing adopts steel and has higher hardness through Quenching Treatment, the thief is motionless with bit drills; When destroying lock core with drilling, the anti-drilling sheet that is loaded on the Cross lock outer end rotates with drill bit, can't creep into, so have good anti-drilling anti-theft effect.

Description of drawings:

Fig. 1 is the utility model

Fig. 2 is the right side view of Fig. 1

Below in conjunction with description of drawings the utility model embodiment, the outer end of Cross lock is provided with anti-drilling sheet 3, and suit anti-drill bushing 2 outside anti-drilling sheet 3 and Cross lock, because doorframe iron plate is thinner, stationary housing 6 is to strengthen this place thereon, and anti-drill bushing 2 is installed on the housing 6; Anti-drilling sheet 3 is 0.5～1mm with the radial clearance of anti-drill bushing 2; Anti-drilling sheet is 0.5～1mm in the end face and the end play between the anti-drill bushing 2 of Cross lock 1; When thief's drilling lock core, anti-drilling sheet 3 will rotate together with drill bit, can't creep into, and the purpose that its destruction lock core is stolen is cannot succeed.Anti-drill bushing 2 adopts No. 45 steel and through Quenching Treatment, hardness reaches HRC38～45, drill bit skid thereon bore motionless; When key is inserted in the Cross lock by the anti-drilling hole that puts, groove on the anti-drilling sheet, key, the tongue handsetting gear 4 of Cross lock 1 rotates, gear 4 drives the tooth bar 5 upper and lower rectilinear motions that are positioned at its both sides, be connected the also upper and lower rectilinear motion of latch of tooth bar end and insert or break away from pin-and-hole on (cabinet) doorframe, realize pinning or opening.

Claims

1, a kind of drill-preventive anti-theft lock is characterized in that: the Cross lock outer end is provided with anti-drilling sheet, the anti-drilling cover of suit outside anti-drilling sheet and Cross lock, and this anti-drill bushing is installed on the cabinet door of safety cabinet.

2, drill-preventive anti-theft lock as claimed in claim 1 is characterized in that: be provided with relatively turnable gap between anti-drilling sheet and anti-drill bushing, Cross lock.

3, drill-preventive anti-theft lock as claimed in claim 1 is characterized in that: anti-drilling cover material is steel and through Quenching Treatment.