Awning, in particular greenhouse awning

A sun-shading cover, comprising a fabric; aThe inner end is connected with a fabric, wherein the outer end connected to a supporting rod stayed is a guide rail; And the elastic buckle is arranged in the composition the opposite side function on the stayed rod, wherein the elastic part fixed to the edge and guide of by a wheering deflection wheel, when extending the upper and lower fabric the winding and is the crossed on the upper fabric on the stayed rod, thus is arranged on the sun-shading cover cloth; The opening of the sun-shading cover cloth and pulls a winding device is arranged by a direct drive motor device, which is provided with a switching device is used in the expansion cutting the direct drive motor; deviceThe switching device is torque sensor and only in the surpassing the supporting expansion and sun-shading cover of the concrete is the direction of the first position to an angle of winding way for. The invention is in a sun-shading cover the telescopic control method; the sun-shading cover cloth along left end of the winding when the supporting expansion bored degrees for achieving the hopes.