COVER ASSEMBLY FOR TRUCK BED

A cover assembly for the truck bed of a pick-up type vehicle, said cover assembly comprising a rollable curtain (1) having a plurality of transverse adjacent panels (2) hingedly linked to one another; a pair of side rails (3, 4) adapted to be mounted on upper portions of the side walls of the truck bed for guiding the end portions of the transverse adjacent panels (2) and a housing box (5) adapted for receiving and storing the rollable curtain (1), wherein the housing box (5) comprises a transverse rotatable shaft (6) mounted therein, one or more sleeve elements (7, 8) mounted on said transverse rotatable shaft (6), one or more collapsible curtain engaging means (9, 10) each mounted to said one or more sleeve elements (7, 8), respectively, and designed to engage an inner end of the rollable curtain (1), and side walls (11, 12), each having inwardly extending continuous helical trackways defining a rolling path.