Patent ID: 7874343

Claim:
A roller blind assembly ( 14 ) for motor vehicles comprising: a windable sheet material ( 15 ), a rotatable shaft ( 19 ) mountable in a motor vehicle to which one edge of the sheet material ( 15 ) is attached, a flat spiral spring ( 46 ) coupled to said wind-up shaft ( 19 ) for biasing the wind-up shaft ( 19 ) in a direction for winding the sheet material onto the wind-up shaft, said flat spiral spring having opposite side edges and forming a plurality of spring wound layers, a spring housing ( 45 ) in which said flat spiral spring ( 46 ) is housed, and at least one damping plate ( 47 ) held in contacting relation with one side edge of said flat spiral spring ( 46 ) for damping vibrations of the spring layers during operation of the roller blind assembly, said damping plate ( 47 ) including a flat plate portion and a plurality of deformable raised sections ( 73 ) extending transversely to said flat plate portion for biasing said damping plate into contacting relation with said one edge of said flat spiral spring ( 46 ).