ON-OFF STATE DISPLAY UNIT OF GRAVITY DESCENDING GATE

摘要

PROBLEM TO BE SOLVED: To surely display the door closedness even in case of a gravity descending gate in a place where these is no power supply equipment. ;SOLUTION: A door body 1 goes down by its own weight from a door opening position, under guidance of a guide 5, making a damper strap 7 interfere with two dampers 6 and 6 attached to on-off table 3 and, immediately after decreasing a descending speed of the door body 1 in and around the door closing position, a depressing member 10 is made to interfere with an underside of the damper strap 7, depressing it in a shock absorbing state together with one end part of a wire 11, and a weight 12 and the other end of this wire 11 and an indicating member 14 are raised gently, and when the door body 1 goes down to a full-close position, a door close is indicated by a pointer 14B of an indicating member 14.;COPYRIGHT: (C)1998,JPO