Internal clamping type lock

Abstract

An internal clamping type lock is provided with an internal clamping type lock tongue movement mechanism in a lock box; the internal clamping type lock tongue movement mechanism consists of a connecting rod base, a rotating shaft, a connecting rod, a rolling shaft, internal clamping type lock tongues, a lock tongue movement trajectory side plate, a lock box front cover and a fixed plate. An unlocking power mechanism drives a rack to linearly move front and back, and then one pair of internal clamping type lock tongues is driven through the internal clamping type lock tongue movement mechanism to perform front-back curvilinear movement and to be clamped or opened with corresponding lock catch boxes. The internal clamping type lock solves the problems that double doors, double-leaf or single-leaf sliding doors and the like cannot be firmly and reliably locked and straight lock tongue type door locks are weaker in anti-prying performance, has the advantages of wide application range, simplicity in and convenience for use, high mechanical strength and excellent anti-prying and antitheft performance, and creates new elements for development of the lock industry.

Description

technical field [0001] The invention relates to the technical field of locks, in particular to an internal clamp type lock. Background technique [0002] For double doors, it is difficult to lock the double doors with a straight deadbolt lock without fixing one door, because it is easy to shake the two doors after locking because of the gap between the lock box and the dead bolt. The angle formed by the mutual swing between them is too large, causing the deadbolt to come out and be opened. For sliding doors, the general straight deadbolt lock cannot lock the door body. Therefore, the double-leaf doors and double-leaf sliding doors currently on the market generally adopt the method of installing a U-shaped large padlock between the two door handles or locking the tumbler lock with an iron chain to lock the door. It is neither convenient nor safe nor beautiful, and cannot keep up with people's aesthetic and humanized requirements of the times. And the straight deadbolt type ...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an internal pincer lock, which solves the problems that double-leaf doors or double-leaf sliding doors or single-leaf sliding doors cannot be locked securely and reliably, and the straight bolt lock has poor pick-proof performance. The ...

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