| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce vertical frames of a connection part of respective units and to improve appearance of the connection part even when the plurality of units are connected on the right and left. <P>SOLUTION: An extendable gate door includes a pantograph mechanism 10 for which a plurality of inclined links 5 and 6 are freely extendably pivoted at intersections 7-9, a hanging origin end vertical frame 11 and a moving end vertical frame 12 connected to the intersections 7-9 at both ends of the pantograph mechanism 10, and an intermediate vertical frame 14 connected to the intersections 7-9 in the middle of the pantograph mechanism 10, and a plurality of units 32-34 are connected on the right and left. First link materials 35, 36 and second link materials 37, 38 parted to the side of one unit 32, 33 and the side of the other unit 33, 34 are provided between end vertical frames 14a, 14b facing each other of the adjacent units 32-34, and junctions 35a, 36a and 37a, 38a of both link materials 35, 36 and 37, 38 are joined to connect the adjacent units 32, 33 and 33, 34. <P>COPYRIGHT: (C)2013,JPO&INPIT |
