| 摘要 |
PROBLEM TO BE SOLVED: To provide a glazed fire door 5 which has an inexpensive constitution, and which prevents the coming-off of a fireproof glass plate 7 from a window frame 6 of the fire door 5 by preventing a decrease in the holding force of the fireproof glass plate 7 during the application of heat. SOLUTION: A heat-resistant filler 11 is fixed to each of the insides of both side walls 10a of glass grooves 10 which are formed in the window frame 6 of the fire door 5; a peripheral edge of the fireproof glass plate 7 fitted in between them is held in a sandwiched state by them; the insides of both the side walls 10a of the glass groove 10, the peripheral edge of the fireproof glass plate 7, and an undersurface of the heat-resistant filler 11 are sealed with a heat-resistant sealing material 12; a thermally-expandable material is used as the heat-resistant filler 11; the outsides of both the side walls 10a of the glass groove 10 are fitted into a recessed portion 13a of a glass groove binding member 13; and the glass groove binding member 13 binds them so that they cannot stretch outward. COPYRIGHT: (C)2010,JPO&INPIT |
