DOOR FRAME STRUCTURE OF A WOODEN FIRE DOOR AND A SEPARATION PREVENTING STRUCTURE THEREOF WITH AN EXCELLENT FIREPROOF EFFECT

摘要

PURPOSE: A door frame structure of a wooden fire door and a separation preventing structure thereof are provided to prevent a door from being deviated from a door frame even if a part of the door frame is broken when a fire.;CONSTITUTION: A door frame structure of a wooden fire door is composed as follows. A door frame is manufactured using oakwood to have a 40mm width and a 120mm height. A steel connecting unit is used for maintaining a fireproof function and preventing a door from sagging. Coupling strength between a door and the door frame is increased using the steel connecting unit and a countersunk screw.;COPYRIGHT KIPO 2011