A SELF-ACTING CATCH FOR A DOOR

摘要

PURPOSE: An automatic door locking device is provided to easily install the door locking device in a window sash that an installation space is narrow. CONSTITUTION: An automatic door locking device comprises a locking device main body(10) and a hanger(40). The locking device main body is installed in one side of a slide type door or a window(2), and a door frame or a window frame(1). A movable latch(20) protruded to the outside is formed in the locking device main body. The hanger is installed in the other side of the slide type door or the window, and the window frame. A locking groove(42) in which the movable latch is inserted is formed in the end part of the hanger.