| 摘要 |
Wahls 1 A power seat track apparatus for selectively positioning an automotive vehicle seat is adapted to be powered by an electric motor drive, preferably with separate motors for each drive direction. The seat back is mounted on the upper track of the seat track mechanism for horizontal drive with the track. The vertical drive through front and rear torsion tubes or bars act on only the seat pan and seat cushion but not on the seat back. Since the vehicle shock loading requirements must be met by the structural seat pan or seat frame, the pan for holding only the seat cushion may be reduced in size as compared to the usual power seat frame. The front of the seat cushion is interconnected with the pan through a lost motion pivot and the rear portion of the seat cushion is interconnected with the seat pan through a fixed pivot connection whereby simultaneous elevation and shortening of the seat cushion with respect to the seat back is effected.
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