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Automotive seat

  • US 4,796,951 A
  • Filed: 04/25/1986
  • Issued: 01/10/1989
  • Est. Priority Date: 04/27/1985
  • Status: Expired due to Fees
First Claim
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1. A seat assembly arranged on a floor, comprising a main slide mechanism including two parallel stationary rails mounted on said floor and two parallel movable rails slidably disposed on said stationary rails, and an auxiliary slide mechanism including a generally rectangular first frame structure mounted on said movable rails to move therewith, a generally rectangular second frame structure slidably disposed on said first frame structure, an operating device for adjusting the position of said second frame structure relative to said first frame structure, a seat cushion mounted on said second frame structure to move therewith and a seatback mounted on said movable rails of the main slide mechanism to move therewith, wherein said operating device comprises:

  • a shaft supported by a given portion of said first frame structure and rotatable about its axis;

    a first gear secured to said shaft to rotate therewith;

    a rack secured to said second frame structure and meshed with said first gear so that rotation of said shaft about its axis induces a sliding movement of said second frame structure relative to said first frame structure;

    a second gear secured to said given portion of the first frame structure;

    a lock device rotated together with said shaft and lockingly engageable with said second gear to lock the shaft to the fixed second gear;

    wherein said lock comprises;

    a pawl mounting piece secured to said shaft for rotation therewith and mounted adjacent said second gear; and

    a pair of pawls rotatably mounted on said pawl mounting piece, one of said pawls adapted to engaged said second gear so to prevent rotation in one direction and the other of said pawls adapted to engage said second gear so as to prevent rotation of said second gear in the opposite direction anda lock cancelling device pivotally disposed about said shaft and disengaging said latch device from said second gear when rotated by a given angle about the shaft, wherein said lock cancelling device comprises;

    a lock cancelling device pivotally disposed about said shaft and disengaging said latch device from said second gear when rotated by a given angle about the shaft, wherein said lock cancelling device comprises;

    a rotation knob rotatably mounted on said shaft; and

    a bracket fixedly secured to said rotation knob and having two pins projecting in the axial direction of said shaft, said pins adapted to pass through corresponding slots in said pawl mounting piece and selectively disengage said pawls.

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