Patent ID: 7641164
Filing Date: 2010-01-05
Classification: B60N

Abstract:
1. A power seat slide apparatus for a vehicle comprising: a first rail adapted to be fixed to a vehicle floor; a second rail adapted to be fixed to a vehicle seat and slidably supported relative to the first rail; a screw shaft screwed to a nut member which is fixed to the first rail, the screw shaft including an end portion and a stepped portion, the end portion of the screw shaft being reduced in diameter through the stepped portion, the screw shaft being rotatable relative to the nut member for slidably moving the second rail relative to the first rail; a washer engaged with the stepped portion of the screw shaft, the washer to which the end portion of the screw shaft is inserted; a gear member made of resin to which the end portion of the screw shaft is inserted; a fastening member provided at the end portion of the screw shaft for holding the gear member between the fastening member and the washer; and a gear box fixed to an end of the second rail for transmitting a driving force of an electrical drive source to the screw shaft through the gear member; the gear box including: the stepped portion of the screw shaft is arranged in such a manner that the washer is engaged with the stepped portion in the gear housing.