Windup window shade with a centering device for the traction rod
AssigneeBOS GmbH & Co. KG
InventorsWerner P. Schlecht, Herbert Walter
Life of this patent
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Abstract
A windup window shade for motor vehicles has a rotatably seated windup shaft, on which a window shade web is fastened by an edge. The other edge is fastened on a traction rod, whose ends are guided in guide rails. The distance between the guide rails changes very greatly, viewed in the direction of movement of the window shade web, because of which the length of the traction rod can be changed in a telescope-like manner. It is composed of a center element and two end elements, wherein it is provided with the aid of a centering device that the center element always remains centered in respect to the end elements.
Claims15
A windup window shade for regulating the entry of light through a window into the interior of a motor vehicle, comprising:
- at least one windup shaft, which is rotatably seated,
- at least one window shade web, which is fastened by one edge on the windup shaft,
- at least one pair of guide rails, each of which extends laterally beside the window shade web when extended, and each of which contains at least one guide groove,
- a length-adjustable traction rod, which is connected with and edge remote from the windup shaft and is composed of a center element and two end elements, of which the end elements are guided in the guide grooves,
- a centering device, formed as a differential gearing which, at least approximately, centers the center element with respect to the end elements, and
- a drive mechanism for moving the traction rod along the guide rails and for rotating the windup shaft.
Dependencies are inferred from the claim text.