Abstract: A spindle drive for a closure element of a motor vehicle. The spindle drive including a drive unit and a spindle-spindle nut transmission and including a spindle and a spindle unit for generating drive movements. The spindle drive including first and second drive sections, including first and second drive connections and configured to move relative to another between a retracted state and mi extended state over an adjustment path along a longitudinal axis of the drive unit. The spindle disposed in the second drive section and is axially fixed relative to the first drive connection, and the spindle nut is disposed in the first drive section and is axially fixed relative to the second drive connection. The spindle drive includes a support sleeve radially surrounding the spindle nut in the extended state and is mounted such that the spindle nut is axially moved relative to the two drive connections.

Abstract: It is provided a driving device for adjusting a vehicle part, in particular a tailgate, comprises an electric drive for driving the vehicle part, with an output shaft for transmitting an adjusting force to the vehicle part, and a first braking device operatively connected to the output shaft, which includes at least one permanent magnet element and is configured to provide a braking force for arresting the vehicle part in a currently adopted position. There is also provided a second braking device that is configured to switch the electric drive into a generator braking mode in order to at least partly feed a power generatorically produced by the drive back into the drive and thereby provide a braking force for braking a movement of the vehicle part.

Abstract: It is provided a driving device for adjusting a vehicle part, in particular a tailgate, comprises an electric drive for driving the vehicle part, with an output shaft for transmitting an adjusting force to the vehicle part, and a first braking device operatively connected to the output shaft, which includes at least one permanent magnet element and is configured to provide a braking force for arresting the vehicle part in a currently adopted position. There is also provided a second braking device that is configured to switch the electric drive into a generator braking mode in order to at least partly feed a power generatorically produced by the drive back into the drive and thereby provide a braking force for braking a movement of the vehicle part.