Adjustment device for adjusting the position of a windscreen

An adjustment device for adjusting a windscreen of a vehicle, in particular of a motorcycle, is provided. A windscreen holder is connectable to the windscreen. A carrier structure is fastenable on the vehicle. A slider crank is connected to the carrier structure in a pivotable manner about a first pivot axis and to the windscreen holder in a pivotable manner about a second pivot axis. A linear guide is provided, wherein the windscreen holder is guided by a pivot bearing arrangement in a linearly movable manner in a longitudinal direction of the linear guide and is pivotable about a third pivot axis. The first pivot axis, the second pivot axis and the third pivot axis are oriented parallel to one another.