Patent ID: 7963069

Claim:
A safety device for motorized access passageways, comprising a movement and supporting mechanism of an oscillating access shutter, which includes an electric motor ( 30 ) having an outlet shaft, said electric motor ( 30 ) being suitable for activating, by means of at least one reducer, a mechanical control system, which supports the shutter and makes said oscillating access shutter oscillate, along a circumference arc, perpendicularly to a passage direction, so as to open or close an access passageway, because of a swinging movement of said oscillating access shutter which, following a first rotation causes closing of the access passageway and following a subsequent rotation, opposite with respect to said first rotation, causes opening of the access passageway, characterized in that said mechanical control system comprises at least one shaped connecting rod ( 15 ), fitted, by means of at least one handle ( 16 ), onto the outlet shaft of said electric motor ( 30 ), said shaped connecting rod ( 15 ) also being connected to at least one vertical arm ( 11 ) having ends said vertical arm ( 11 ) being fulcrumed, in correspondence with said ends of said one vertical arm ( 11 ), to a plurality of levers ( 12 , 13 , 14 , 14 ′), characterized in that at least two of said levers ( 12 , 13 , 14 , 14 ′) are mutually connected in correspondence of each of said ends of said vertical arm ( 11 ), said two levers ( 12 , 13 , 14 , 14 ′) being centrally hinged, on each other, by means of a first connection pin ( 20 , 21 ), onto a supporting structure ( 19 ) along a central axis (X) of said supporting structure ( 19 ), at least a second pin ( 32 , 33 ), which carries at least one elastic element ( 22 , 25 ), being fixed to at least one of said hinged levers ( 12 , 13 , 14 , 14 ′).