Patent ID: 8899297
Filing Date: 2014-12-02
Classification: E05F,E05Y,E06B

Abstract:
1. A rolling door comprising: a door leaf which covers a door aperture when the rolling door is in the closed condition, guides arranged on both sides of the door leaf for guiding the door leaf in them, wherein the guides each comprise a vertical portion associated to the door aperture and a spiral portion associated to a door lintel, and wherein the door leaf is received in the spiral portions in the form of non-contacting winding layers when the rolling door is in the opened condition, and a drive mechanism for operating the rolling door vertically which comprises a motor, a drive shaft, drive rollers, and drive organs comprising traction means, wherein the drive organs are arranged on both sides of the door leaf laterally adjacent the guides and outside the moving range of the door leaf and act on a floor-side end portion of the door leaf for the purpose of introducing a vertical drive force, wherein the drive organs extend substantially within the plane of the door leaf in the area of the vertical portions of the guides, and wherein the drive shaft establishes a driving connection between the drive organs, wherein the drive shaft is arranged in the central area of the spiral portions of the guides of both sides and extends from one side of the door to the other one, each drive roller located at each end of the drive shaft, and wherein the drive organs are each driven by the drive shaft via the drive rollers and deflected by deflection rollers, each of the deflection rollers having an outer diameter smaller than an outer diameter of the drive rollers and located vertically so that an upper surface of the outer diameter of each deflection roller is above an axis of the driveshaft and below an upper outer surface of each spiral portion of the guides, the deflection rollers located horizontally so that the outer diameter of each deflection roller is between the axis of the driveshaft and an outer side surface of each spiral portion of the guides, the deflection rollers located such that the side surface of each deflection roller directs a strand of each of the drive organs facing the door aperture to extend substantially within the plane of the door leaf.