| 摘要 |
PROBLEM TO BE SOLVED: To satisfy requirement as a door with a one-way openable fireproof structure which opens in forward and backward directions and has a door stopper on one side of a door body during normal use and enables to open the door body in the reverse direction of normal operation in forward and backward directions as necessary by life saving or disaster evacuation when a shutting-in accident or the like occurs. SOLUTION: Longitudinal frames 14, 14 and a horizontal frame 15 are attached to left and right side edge parts H2, H2 and an upper edge part H3 of a door opening H of a building, respectively and longitudinal door stoppers 12, 12 and a horizontal door stopper 13 are pivotably attached to the longitudinal frames 14, 14 and the horizontal frame 15 through hinge metal fittings 12H, 13H. The pivotable longitudinal door stoppers 12, 12 are locked by latch lock mechanism. The latch lock mechanism is released by operation of retracting the horizontal door stopper 13 from the door body 11 and the left and right longitudinal door stoppers 12, 12 are pivotably moved in the direction of retraction from the door body 11. The door body 11 is reversely opened in forward and backward directions by retraction of the longitudinal door stoppers 12, 12. COPYRIGHT: (C)2005,JPO&NCIPI
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