Latch
close The bolt is a simple part to prevent the door from opening. It is generally metal and is divided into two parts, one with a movable rod and the other with a "nose". Usually, the part with rod is fixed on the door, and the nose is fixed on the door frame, and the position should be corresponding. The structure is much simpler than that of a lock, but the effect is similar. The lock is just outside the door and the bolt is inside the door. When in use, the rod can be inserted into the nose. Latch ch ā xi ā o