Patent ID: 8783774
Filing Date: 2014-07-22
Classification: B60N,Y10T

Abstract:
1. A drive unit for a vehicle seat, the drive unit comprising: a motor; a drive shaft having a drive shaft profile and having a drive shaft axis; a gear unit which is provided on a drive output side of the motor and which has at least a drive output wheel which is rotatably supported about a core axis, the drive output wheel being provided with 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 drive shaft central axis, the core axis and the drive shaft axis being offset in parallel by an eccentricity, wherein during operation, when the drive unit drives the drive shaft by a two stage-gear unit comprising a worm gear and a spur-gear stage, the drive unit superimposes a wobbling movement on the rotation of the drive shaft by the eccentricity of the core axis and the drive shaft axis, and the drive shaft rotates about the core axis and carries out a relative movement in space, wherein a gear axis of said spur-gear stage is parallel to said core axis and said drive shaft axis.