| 摘要 |
The invention concerns a safety device without contact for motorized doors movable in height, The device comprises two opposite safety units (14) attached to the internal face of the door, on its lower side, carrying means for defining at least an optical barrier positioned on the movement trajectory of the door and designed to provoke the stoppage of said door in the presence of an obstacle. The means for defining the optical barrier (23) are on board the parallel cursors (16, 26, 36)) each one belonging to one of said two safety units (14). The cursors are guided in cam slots of respective supporting elements and each one is susceptible to combined horizontal and vertical translation movements to position the optical barrier in parallel below the lower side and in the plane of the door during its opening and closing movements, and in parallel at a distance from the internal face of the door when the latter is in the lowered closed position. |
