Door lock

Abstract

The invention aims to provide a door lock for silencing to lower noise generated by an auxiliary lock tongue linkage rod and a slider. An auxiliary lock tongue of the door lock is provided with a magnet, extends out of a lock bracket only when aligning at an auxiliary lock tongue buckle and is firm in assembly and free of damaging completeness of integral appearance. The door lock has the advantages that a buffering device is additionally arranged between an auxiliary lock tongue linkage rod abutting portion and a slider abutting portion to isolate the same, absorbs and buffers impact force of the same, effectively buffers impact strength and lowers noise and reduces wear of the auxiliary lock tongue linkage rod and the slider, and an auxiliary lock tongue buffering device maintains the auxiliary lock tongue linkage rod and the slider stable under magnetic adsorption action of the auxiliary lock tongue, so that service life of the auxiliary lock tongue linkage rod and the slider is prolonged; through an auxiliary lock tongue retaining member fixedly assembled with the auxiliary lock tongue, the auxiliary lock tongue magnet can be blocked in an auxiliary lock tongue cavity, so that influence on exertion of magnetic adsorption force of the auxiliary lock tongue magnet due to displacement of the auxiliary lock tongue magnet caused by vibration when a door is opened and closed is avoided; the auxiliary lock tongue retaining member can be conveniently made into shape and color identical with the auxiliary lock tongue, so that damage to integral appearance uniformity caused by an auxiliary lock tongue cavity opening due to an auxiliary lock tongue cavity is avoided, and harmony and unity of overall style of the lock tongue are facilitated.

Description

[0001] This application is a divisional application for Chinese invention patent application number: 201510113509.1, application date: March 16, 2015, name: door lock. technical field [0002] The invention relates to a door lock, in particular to a door lock which effectively reduces noise and has an automatic adsorption function. Background technique [0003] The door lock is a hardware designed for space privacy. The basic structure includes a lock body and a lock catch. The lock body is assembled on the door, and the lock catch is assembled on the door frame. A common lock body includes a lock seat, a main bolt, and an auxiliary bolt. The lock seat is statically assembled on the door, and the main and auxiliary bolts are all movably assembled relative to the lock seat. The main and auxiliary lock holes of the lock on the lock match. [0004] In the lock body, the main dead bolt is fixedly assembled with the main dead bolt link, and the auxiliary dead bolt is fixedly ass...

AI Technical Summary

Problems solved by technology

[0005] In the lock body, the main bolt is opened and closed by the key to expand and contract, while the auxiliary bolt is mainly driven by the inner handle or the outer handle to expand and contract. The main bolt first keeps shrinking after the door is opened, and the auxiliary bolt The preferred state is to keep the extended state, that is to say, the extended state of the auxiliary bolt is its normal state. The defect is that when the residents enter and exit the door, the clothes are easily caught and entangled by the auxiliary bolt, so the door will be against the will. Active, and the protruding secondary lock tongue is sharp, there is a risk of scratches

And in the lock body, the auxiliary bolt is fixedly assembled with the auxiliary bolt link, and the lock seat also includes a slider. The slider is driven by the inner handle or the outer handle, and the slider then drives the auxiliary bolt link , and then drive the auxiliary bolt, so the auxiliary bolt, the auxiliary bolt linkage, and the slider are movable relative to the lock seat as a whole, but at the same time, the auxiliary bolt, the auxiliary bolt linkage is also movable relative to the slider. Assembling, there will be a displacement between the auxiliary lock tongue and the auxiliary lock tongue link as a whole and the slider

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