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Power seat apparatus for vehicle

  • US 8,038,197 B2
  • Filed: 09/09/2009
  • Issued: 10/18/2011
  • Est. Priority Date: 09/12/2008
  • Status: Active Grant
First Claim
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1. A power seat apparatus for a vehicle, comprising:

  • a lower rail provided at a vehicle floor;

    an upper rail slidably supported by the lower rail and holding a seat for the vehicle;

    a screw member rotatably arranged between the lower rail and the upper rail and extending in a direction where the upper rail is slidable;

    a feed nut member fixed to the lower rail and meshed with the screw member;

    a retention member fixed to the upper rail;

    a fitting member rotatably held by the retention member and fixed to the screw member;

    a gear box mounted on the retention member and rotatably supporting an output rotation member that is rotatably connected to the screw member; and

    a drive unit transmitting a rotation drive force to the screw member by means of the output rotation member supported by the gear box; and

    first and second cut-and-lifted portions formed at first and second longitudinal walls of the upper rail respectively, the cut-and-lifted portions making contact with the fitting member when a load is applied to the screw member in an axial direction thereof to distribute the load to the upper rail, the cut-and lifted portions being formed by bending portions of the first and second longitudinal walls.

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