Awning, in particular sun room awning

#1. Field of the Invention

#The invention relates to an awning, in particular a sun room awning, comprising a fabric-roll shaft for retracting and extending an awning fabric; wherein the inward end of the awning fabric is joined to the fabric-roll shaft and the outward end of the awning fabric to a drop-out bar, and the drop-out bar is run in lateral guide rails; wherein elastic pull straps act on the drop-out bar on the side opposite the awning fabric, the pull straps being deviated by a deflection pulley in the vicinity of the end of the guide rail, and reversed towards the fabric-roll shaft and wound on the fabric-roll shaft upon extension and unwinding of the awning fabric and exercising tensile stress on the drop-out bar and thus on the awning fabric; wherein unwinding the awning fabric and winding up the pull straps take place by an electric motor drive of the fabric-roll shaft, and switchgear is provided for switching off the drive of the fabric-roll shaft upon complete extension.

#2. Background Art

#FIG. 1 is a plan view of a sun room awning according to the invention;

#FIG. 2 is a section on the line II—II of FIG. 4; and

#FIGS. 3 to 5 are sections on the line III—III of FIG. 1.

#A sun room awning 1 seen in FIG. 1 comprises a fabric-roll shaft 2, mounted for rotation on the wall of a house (not shown), for retraction and extension of an awning fabric 3, the inward end of which is fixed by a piping 4 in a piping groove 5 of the fabric-roll shaft 2, and the outward end of which is fixed by a piping 6 in the piping groove 7 of a drop-out bar 9. The drop-out bar 9 is run in lateral guide rails 10 by way of a respective slider 11 which slides on slide rails 12 of the guide rails 10.

#The side of the drop-out bar 9 that faces away from the piping groove 7 is provided with another piping groove 14, with an elastic pull strap 15 being applied to both outer ends thereof; the pull strap 15 is deviated by a deflection pulley 16 on the drop-out side, reversed and again deviated by a deflection pulley 17 in the vicinity of the fabric-roll shaft 2 and wound on or off winding pulleys 18 on both sides of the fabric roll.

#The fabric-roll shaft 2 is drivable, controlled by an electric motor 19, with a torque transmitter 20, which is mounted on the fabric-roll shaft 2, measuring the torque that acts on the fabric-roll shaft 2 in accordance with the tensile stress that acts on the awning fabric 3.