The invention relates to an apparatus for continuous inclination adjustment of a component part of a vehicle, in particular a pivotable vehicle armrest, pivotable about a pivot axle. The apparatus is configured to lock various angles of inclination in a first pivoting direction and unlock them when a pre-settable angle of inclination is reached and/or exceeded. This allows the pivotable component part of the vehicle to be moved back into a starting position contrary to the first pivoting direction. The continuous inclination adjustment apparatus has a sleeve freewheel device for setting the continuous inclination, a coupling device for coupling and uncoupling the sleeve freewheel device and a control device for actuating the coupling device.