A synchronous double-hook deadbolt anti-theft door lock

Abstract

The invention relates to a synchronous double-hook-bolt anti-theft door lock which is characterized in that a main bolt and double-hook bolts are mounted at the front part of a lock box; the main bolt is riveted and fixed on a main bolt plate; the double-hook bolts are riveted and fixed on double-hook bolt plates respectively; a sliding block and a linkage strip are mounted at the rear part of the lock box; a main linkage sheet is mounted between the main bolt plate and the linkage strip; side linkage sheets are mounted between the double-hook bolt plates and the linkage strip; the double-hook bolt plates and the main bolt plate are controlled by the sliding block; swing hooks are mounted in the double-hook bolts, and connected with the double-hook bolts by hook shafts; front tripping motion blocks and rear tripping motion blocks are arranged at parts, close to the double-hook bolts, in the lock box; the tails of the swing hooks are contacted and matched with the front tripping motion blocks and the rear tripping motion blocks for use; three rack holes with the same shape are formed in the sliding block, and control positions of the main bolt and the double-hook bolts when the main bolt and the double-hook bolts extend out of the lock box or retract into the lock box; a swing shaft is mounted in the middle of the main linkage sheet, and connected with the lock box; and swing shafts are mounted in the middles of the side linkage sheets, and connected with the lock box.

Description

technical field [0001] The invention relates to the field of lock manufacturing, in particular to an anti-theft door lock with a synchronous double-hook deadbolt. Background technique [0002] The double-hook deadbolt anti-theft door locks currently on the market are mainly composed of a lock box, a main deadbolt and a double-hook deadbolt. Its defect is: when the hook lock tongue installed on both sides of the main lock tongue is subjected to a large lateral force or impact in the extended state, the hook lock tongue will be bent and deformed, and it will be hindered when it is retracted, which will affect the use and lock. Poor anti-pry performance. Contents of the invention [0003] The object of the present invention is to provide an anti-theft door lock with synchronous double-hook bolt. When the hook bolt is subjected to a large lateral force or impact, the bolt will not be bent and deformed, and the lock has strong anti-theft and anti-pry performance. [0004] A s...

AI Technical Summary

Problems solved by technology

Its defect is: when the hook lock tongue installed on both sides of the main lock tongue is subjected to a large lateral force or impact in the extended state, the hook lock tongue will be bent and deformed, and it will be hindered when it is retracted, which will affect the use and lock. Poor tamper resistance

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