What is a crescent lock
What is a crescent lock？
Crescent lock (window lock) is widely used in plastic steel aluminum alloy push-pull window. Because its shape is like a crescent moon, it is called a crescent lock by the practitioners. Crescent lock not only plays the role of opening and closing, but also plays the function of anti-theft to a certain extent. The appearance of crescent lock is generally spray painting, baking paint, spraying, electroplating and so on. Most of them are white and aluminum. Crescent lock of different styles and varieties. High quality crescent lock in the hand weigh a feeling of sinking; The appearance is smooth, no pitting; Crescent lock can generally rotate 180 degrees (some can rotate 360 degrees) high quality crescent lock rotation up more flexible, free, rotation up no sound, elasticity is better; Turn to the back observation, good crescent lock is spring structure. The central material is galvanized material, not easy to rust; From the thickness of the material observation, relatively thick. The same size of inferior crescent lock hand on relatively light, relatively small, dull appearance, open generally is not particularly flexible, time to use a long time, easy to jam and loose to open. Closing and anti-theft performance is greatly reduced. The style of crescent lock has long handle, short handle, oblique handle and so on.
Crescent lock several important data. One is the height (the height is the distance between the base and the highest point of the crescent about 5 mm), and the other is the width (the distance between the center line of the screw and the crescent). The other one is the distance between the center line of the screw and the edge of the seat.
A good crescent lock brings security to the doors and Windows as well as a small ornament on the doors and Windows.
