Adjustment device for a vehicle subassembly having an adjustment mechanism and a supporting element

An adjustment device for a vehicle subassembly, comprising:

• a guide rail which extends along a longitudinal direction,
• an adjustment assembly which is guided on the guide rail so as to be displaceable along the longitudinal direction and which is assigned to the vehicle subassembly, the adjustment assembly being formed by an adjustment rail comprising a base and two rail legs arranged on the base,
• a spindle which is arranged on the guide rail,
• an adjustment mechanism which is operatively connected to the spindle, is arranged on the adjustment assembly, comprises a mechanism housing and is able to be driven so that the adjustment mechanism can be displaced, together with the adjustment assembly, along the longitudinal direction relative to the guide rail, and
• two separate retaining elements arranged on the adjustment assembly, each retaining element comprising an opening which is delimited by an edge and through which the spindle extends,
• wherein the retaining elements support the mechanism housing on the adjustment assembly in a floating manner in such a way that the mechanism housing together with the spindle, is movable with respect to the retaining elements via a bearing travel along a direction perpendicular to the longitudinal direction and pointing perpendicularly away from the base of the adjustment rail,
• wherein the retaining elements are spaced apart from one another along the longitudinal direction and receive between them the mechanism housing,
• wherein the adjustment device comprises a supporting element which is configured to limit the bearing travel of the mechanism housing in said direction perpendicular to the longitudinal direction in such a way that the spindle is prevented from butting against the edge of the opening of each retaining element along the direction perpendicular to the longitudinal direction and pointing perpendicularly away from the base of the adjustment rail.