STOPPER OF EXTENSIBLE GATE DOOR

PROBLEM TO BE SOLVED: To provide a stopper of an extensible gate door usable irrespective of the size of the extensible gate door, not applying undue force to the gate door nor causing incomplete extension. SOLUTION: This stopper B of the extensible gate door A which runs on a gate door rail 6 installed between a lifting side column and a door stop side column in the opening and closing direction restricts the movement distance of the lifting side end of the extensible gate door A when the gate door is opened and closed. The stopper includes a base 10 on which a mounting position for a stop fitting 31 are provided at a plurality of positions in the running direction of the extensible gate door and installation fittings 21, 22 attaching the base 10 to the gate door rail 6 at any positions in the longitudinal direction of the gate door rail 6. Bar-like installation fittings 21, 22 are fitted to both front and rear ends of the base 10, respectively. Contact surface parts 23, 24 in contact with the side surfaces of the gate door rail 6 are formed at both right and left ends of the base, respectively. A pressing bolt 28 pressed against the gate door rail 6 is screwed to the one contact surface part 23. COPYRIGHT: (C)2010,JPO&INPIT