ROOF SYSTEM FOR A VEHICLE COMPRISING A SUNSHADE ASSEMBLY

A roof system for a vehicle includes a sunshade assembly (7), which comprises a flexible sunscreen (8) having opposed longitudinal edges and opposed transversal edges and a winding shaft (21, 22) carrying a rotatable winding roller (12) configured for winding and unwinding the sunscreen at a first one of its transversal edges. The winding roller is provided with an internal spring (16) connected between the winding roller (12) and the winding shaft (21, 22) and is preloaded to wind the sunscreen (8) thereon. Two drive cables (14) extend along and are capable of a movement parallel to the longitudinal edges of the sunscreen (8). The drive cables (14) are connected to opposite ends of an operating beam (11) of the sunscreen for moving it to wind and unwind the sunscreen.A rotatable gearwheel (24) is positioned at only one end of and concentrically fixed to the winding shaft (21, 22) and is drivably in engagement with one of the drive parts (14), such that a displacement of said one of the drive parts results in a rotation of the winding shaft (21, 22) in the same direction as the winding roller (12).