Drive unit for a vehicle seat

A motor vehicle seat comprising:

• a seat part;
• a backrest;
• a vehicle seat drive system, the inclination of the backrest being adjustable by means of the vehicle seat drive system, the vehicle seat drive system comprising a drive unit comprising a motor and a two stage-gear unit, said two stage-gear unit comprising a worm gear and a spur-gear stage, said spur-gear stage comprising a gear axis, a drive shaft having a drive shaft profile and having a drive shaft axis and a gear unit which is provided on a drive output side of the motor and which has at least a drive output wheel rotatably supported about a core axis, the drive output wheel comprising a core which is rotatable about the core axis, the core having a shaft receptacle for receiving the drive shaft in a rotationally secure manner, the drive shaft axis being a shaft central axis, the core axis and the shaft axis being offset in parallel by an eccentricity, wherein during operation, when the drive unit drives the drive shaft via said two stage-gear unit, the drive unit superimposes a wobbling movement on the rotation of the drive shaft via said eccentricity of said core axis and said drive shaft axis, and the drive shaft rotates about the core axis and carries out a relative movement in space, said gear axis being parallel to said core axis and said drive shaft axis;
• and
• a fitting which has an eccentric epicyclic gear with the eccentricity as a mean eccentricity wherein the drive unit is fixed to the backrest.