| 摘要 |
PROBLEM TO BE SOLVED: To provide a fire door structure capable of surely opening/closing a fire door even if extinguisher gas is emitted to the interior of a room to apply a high pressure thereto. SOLUTION: A fire door 11 includes a first side end 17, a second side end 18 and a third side end 20 forming a door end of the fire door 11 such that a shape formed by connecting the three side ends 17, 18 and 20 with virtual lines S is an isosceles triangle. The fire door 11 further includes a first side face 15a, a second side face 16a facing the side of an exterior space R2 in a closed attitude, and a third side face 16b facing the side of the room R1. A hinge 19 is provided at the first side end 17 and/or the second side end 18 of the fire door 11, and the fire door 11 is rotationally turned about the hinge 19 to communicate/partition the room R1 with/from the external space R2. COPYRIGHT: (C)2011,JPO&INPIT |
