AUTOMATIC CLOSING DEVICE OF AN ENTRANCE DOOR IN A SMOKE REMOVED AREA WITH AN INTEGRATED DRIVE UNIT AND A CONTROL UNIT CAPABLE OF AUTOMATICALLY CLOSING AN OPENED ENTRANCE DOOR IN CASE OF A FIRE

摘要

PURPOSE: An automatic closing device of an entrance door in a smoke removed area with an integrated drive unit and a control unit is provided to prevent smoke and flames from spreading to the whole of a building by automatically closing an entrance door even if an emergency power source is cut off. ;CONSTITUTION: An automatic closing device of an entrance door in a smoke removed area with an integrated drive unit and a control unit comprises a main body(11), a spring support unit, a spring pressing unit, a rear support cap, a motor support unit, a pressing rod, and a bracket. The main body has an inner space. The spring pressing unit inserts a spring into the inner space of the main body. The spring pressing unit presses the spring to the rear of the spring support unit. The rear support cap is formed in the rear of the main body. The pressing rod presses the spring pressing unit. The motor support unit fixes a motor(31) and a reducer(32) through bolts. The bracket is formed in the other side of the main body.;COPYRIGHT KIPO 2011