| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problem that early deterioration is caused when a smoke blocking member of low durability is attached by mistake to a part needing durability in the case of properly using two kinds of different durability according to need of durability by fixing the smoke blocking member to a holding material in order to add a smoke blocking function to a door and that smoke blocking performance cannot be fully demonstrated when the smoke blocking member is attached in a mistaken direction in the case of being capable of attaching the smoke blocking member with directionality in the mistaken direction. <P>SOLUTION: Shapes of fixed portions of the smoke blocking member and of the holding material are made so that the smoke blocking member of high durability can be attached to the part needing no durability but the smoke blocking member of low durability cannot be attached to the part needing durability to prevent mistaken attachment of the blocking member. Further a mistake about an attaching direction can be prevented by providing a means for preventing the smoke blocking member from being attached in the mistaken direction when there is the directionality in attachment of the smoke blocking member. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
