FIRE-SHUTTER INTERLOCKING TYPE GATE-FLOOR AUTOMATIC OPENING DEVICE

摘要

PROBLEM TO BE SOLVED: To prevent a hindrance to the walk, etc., of a person by closing a slit for passing a shutter formed on a floor by a gate floor at all times, and to open the slit automatically when the shutter is lowered. ;SOLUTION: In the fire-shutter interlocking type gate-floor automatic opening device 3, a gate floor 4 pivotally attached to a slit 2 for passing a shutter formed on a floor in response to the places of the lifting and lowering of a fire shutter in a manner that the gate floor 4 can be opened and closed in the vertical direction is supported by a supporting piece 6, and the slit for passing the shutter is closed. An operating member 17 is rotated by the lowering of the shutter, the supporting piece 6 is pushed in the release direction, the supporting state of the gate floor 4 is released, the gate floor 4 is dropped and turned, and the slit 2 is opened.;COPYRIGHT: (C)1999,JPO