Drive device

A drive device for a hatch of a motor vehicle, comprising:

• a first fastening element, which is connectable to one of a stationary component and a movable component;
• a housing tube of conductive material, said housing tube being located at an end of the device opposite the first fastening element and axially moveable relative to the first fastening element, said housing including a second fastening element located at an end opposite to the first fastening element, said second element being connectable to the other one of the movable component and the stationary component;
• a spindle drive comprising a threaded spindle having a thread with a lead which changes over a length of the spindle and a spindle nut mounted on the threaded spindle, the spindle nut is provided with a nut pin to engage in each flight, one nut pin being permanently attached to the spindle nut, and other nut pins being stationary in a circumferential direction and free to move in the spindle nut in an axial direction;
• and
• a rotary drive, said spindle drive being actuatable to axially move the first fastening element relative to the housing tube and being rotatably driveable by the rotary drive.