A lock mounted on the door leaf and door frame of a building that needs to be opened and closed. Generally, it is composed of a lock body (including a lock tongue) door and window hardware, an operating mechanism and a brake mechanism, and a lock panel, a handle, a cover plate and the like. The locking tongue has a slanting tongue, a square tongue, a double tongue, a beading tongue, and a hook-shaped tongue. The locking panel has a flat mouth, a left tongue, a right tongue, and a round mouth. The handle has a spherical shape, a curved shape, and Pull the ring.
Building door locks can be divided into large door locks, room door locks, bathroom door locks, windproof access door locks and toilet door locks according to the use occasions; according to the insurance performance can be divided into single insurance, double insurance and three insurance door locks; according to structural characteristics Divided into exterior door locks, mortise door locks and ball door locks.
1 Exterior door lock: The lock body covers the surface of the door leaf. The main products are single tongue single safety door lock, single tongue double safety door lock, single tongue three safety door lock (Figure 1), double tongue three safety door lock, double tongue double lock three safety door lock, multi-tongue double lock head Three insurance door locks, etc.
2 mortise door lock: The lock body is embedded in the door leaf from the side of the door leaf. There are two kinds of blade structure and marble structure. The main products are sliding door mortise lock, single tongue mortise lock, single oblique tongue mortise lock, single oblique tongue button mortise lock, double tongue mortise lock (Figure 2), double tongue squeezing Core door lock, blade handle door lock, etc.
3 spherical door lock: beautiful appearance, easy to use, mostly used in high-rise buildings.
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