Drive device

The invention relates to a drive device comprising a housing, a drive shaft which is mounted in the housing and which comprises a shaft axis and a first and a second electric drive. The drive shaft can be rotated about the shaft axis by means of a drive and can be displaced in an axial manner along the shaft axis. The drives are aligned on the shaft axis and comprise, respectively, a stator and a rotor. The stators are secured to the housing. The rotors are embodied as hollow shafts and are mounted on the housing. The rotor of the second drive is rotationally secured to the drive shaft by means of a linear bearing device, and in a manner which enables it to be axially displaced. The rotor of the first drive is rotationally secured to a threaded spindle and is connected in such a manner that it cannot be axially displaced. Said drive shaft is rotationally connected to a threaded nut which co-operates with the threaded spindle and in such a manner that it cannot be axially displaced. The drive shaft comprises a recess which is used to receive the threaded spindle.