Main lock tongue structure of first-gear type lock body

Abstract

The invention discloses a main lock tongue structure of a firs-gear type lock body. Due to the fact that a rotating piece reinforcing column is arranged on the surface of a main lock tongue plate, when a rotating piece pushes out a main lock tongue for door locking, the rotating piece reinforcing column is right in contact with the vertical wall of the front end of the rotating piece, and therefore in the door locking state, if external force axially acts on the main lock tongue, a main lock tongue push-and-pull column on the rotating piece and the vertical wall of the front end abut against the left side of a push-and-pull groove of the main lock tongue and the rotating piece reinforcing column correspondingly, the axial static pressure of the main lock tongue can be greatly increased, on the basis that too much cost of a lock body is not increased, the axial static pressure of the main lock tongue can be greatly enhanced, and therefore the structure is more reasonable.

Description

technical field [0001] The invention belongs to a lock body, in particular to a lock body for opening and locking a door with one gear. Background technique [0002] At present, the one-stage lock body whose main bolt protrudes no less than 20mm, the axial and lateral static pressure of the main bolt can hardly meet the national standard, that is to say, when the door is locked, the main bolt In the case of a small axial destructive force, it may be destroyed and lose the anti-theft function. The main reason for the lack of axial static pressure of the main bolt of this type of one-gear lock body is that the main bolt is mainly released by a pin on the rotating piece that falls into the push-pull chute of the main bolt. force, and this force is relatively small. In order to solve the problem of insufficient axial static pressure, we have improved the structure of the main lock tongue. Contents of the invention [0003] The purpose of the present invention is to overcome...

AI Technical Summary

Problems solved by technology

[0002] At present, the one-stage lock body whose main bolt protrudes no less than 20mm, the axial and lateral static pressure of the main bolt can hardly meet the national standard, that is to say, when the door is locked, the main bolt Under the condition of small axial destructive force, it may be destroyed and lose the anti-theft function

Images