DRIVE SYSTEM FOR A TILT ADJUSTMENT, VEHICLE SEAT, METHOD FOR OPERATING A DRIVE SYSTEM

摘要

The invention relates to a drive system (2) for a tilt adjustment of a back rest (10) of a vehicle seat (1) foldable between a use position suitable for conveying a vehicle passenger and a non-use position which is pivoted forward with respect to the use position, wherein the back rest (10) is held on a base (11) of the vehicle seat (1) by at least one fitting (12), wherein an output pinion (24) drivable by a drive motor (20) is provided on the seat back side, and the output pinion (24) interacts with a tooth segment (18) arranged rotationally fixed on the base (11), and a pivot movement of the back rest (10) can be carried out by means of the drive motor (20) while the fitting (12) is unlocked, wherein the output pinion (24) can be uncoupled from the drive motor (20) by means of a coupling (22), and wherein a compensation spring (14) is provided acting between the back rest (10) and the base (11) by means of which compensation spring the back rest (10) is pre-tensioned in the direction of the non-use position. The invention relates further to a vehicle seat (1) and to a method for operating a drive system (2).