Insert lock also called insert core door lock, generally by the handle, lock, lock body of three parts, installed on the interior doors, security doors, also is one of the most common locks on the market.
Unilaterally insert core locks the lock tongue is only one Fang Suo tongue, mainly used in stores, movie theaters, hotels, etc in and out of the frequent door, hotel and office building on the access door. According to the number of locks are divided into two kinds of single head and double head lock lock. Single head lock on the outside side of the lock body only install a night lock head, side with key and lock locks, on the other side on the knob screw to rotate the lock up. Double lock is in the lock body on each side of inside and outside a night lock head, both sides must be open or lock the keys.
Monolock tongue core locks the door lock only ? button