Patent ID: 7325851

Claim:
A power seat slide apparatus for a vehicle comprising: a first rail fixedly mounted on a floor of a vehicle and extending in a longitudinal direction of the vehicle; a second rail fixed to a seat and slidably supported by the first rail; a housing made of a metal and fixedly mounted on the first rail, the housing possessing a reverse U-shaped cross section projecting upwardly with an upper wall, which extends in the longitudinal direction of the vehicle and forms an upper surface of the reverse U-shaped cross section, and first and second sidewalls, which extend from a right side, and a left side, of the upper wall along the longitudinal direction of the vehicle and forms side surfaces of the reverse U-shaped cross section, and the housing further including a notch defined by a first notch end surface of the upper wall and a second notch end surface of the first and second sidewalls; a nut member made of a resin, fitted into the notch of the housing and supported inside the housing, and the nut member being held tight in the longitudinal direction of the vehicle by the first notch end surface of the upper wall and the second notch end surface of the first and second sidewalls; a screw shaft extending above the first rail along the longitudinal direction of the vehicle, the screw shaft being freely rotatably supported by the second rail and being engaged with the nut member; and a driving mechanism operatively associated with the second rail so as to rotate the screw shaft, wherein the screw shaft is rotated relative to the nut member in response to an operation of the driving mechanism, and the second rail is slidably moved in the longitudinal direction of the vehicle relative to the first rail when the screw shaft, which is engaged with the nut member, is rotated.