Quick-opening door

A Quick-opening door, comprising a flexible canvas, secured by its upper end to a motor-driven drum for its winding in an opening position and its unwinding in a closing position of the door;

• having said canvas on lateral ends there of vertical alignments of abutment elements which are guided in vertical uprights of the door during vertical displacement of the canvas, whereby said elements are released from the vertical uprights when the canvas receives a push action of a certain intensity;
• characterized in that it comprises at least:
• a hose carrying electrical cables, covered by a tape or sheath and secured to one or both lateral ends of the canvas, containing at least one electrical cable connected to a wireless signal transmitter;
• the plurality of abutment elements secured on the lateral ends of the tape or sheath and distributed along said lateral ends with different separations, with the capacity to displace vertically with respect to the vertical uprights of the door;
• some sensors arranged in a passage area of the abutment elements which capture different sequences of impulses, during the passage of the abutment elements distributed with the different separations on the lateral ends of the canvas, determining the position of the canvas in any given moment;
• and
• a contact detecting band connected to the transmitter by means of the cables contained within the hose.