Roller blind device for covering a transparent plane of the body work of a vehicle

Device consists of blind (10) with front pull-out bar (11) held in side guide rails via coupling part (12). Pull-out bar is hollow profiled part with internal chamber (9) holding bar-shaped coupling part. Chamber is accessible via axial insertion slot (8) for insertion of part. Cross section of pull-out bar is cochleate shaped. Bar chamber has holder leg (21), which locks behind coupling part and forms one of two axial edges of insertion slot.