Fastening arrangement for fin ray wiper

A windscreen wiper device for a vehicle, comprising a wiper blade (2) having

• an elongated upper part (10) which is configured to be at least partially flexible,
• an elongated lower part (12) which is configured to be at least partially flexible, and
• a plurality of connecting elements (18) for connecting the upper part (10) and the lower part (12), wherein the connecting elements (18) are mutually spaced apart along a longitudinal extent (8) of the wiper blade (2), wherein the connecting elements (18) are configured to allow a movement of the upper part (10) and the lower part (12) relative to each other with a movement component along the longitudinal extent (8) of the wiper blade (2),
• wherein the windscreen wiper device further includes a fastening arrangement (32) which is configured to be fitted into a hollow shaft (40) of a drive unit and to be connected thereto so as to transmit a torque from the drive unit via the hollow shaft (40) and the fastening arrangement (32) to the wiper blade (2), wherein the fastening arrangement includes
• a fastening part (30), the upper part (10) and the lower part (12) of the wiper blade (2) being fastened thereto,
• a drive shaft (35) which is connected to the fastening part (30) and which is configured to be fitted into the hollow shaft (40) of the drive unit, and
• clamping means for fixing the drive shaft (35) in the hollow shaft (40) of the drive unit, wherein the clamping means includes a clamping lever (46) which compresses the drive shaft (35) and axially generates a radial expansion of the drive shaft (35).