Patent ID: 8523263

Claim:
A power slide device for vehicle seat, comprising: a lower rail disposed on a floor surface of a vehicle; an upper rail disposed on a seat and engaged with said lower rail in a slidable manner; a screw-rod which is rotatably supported by a screw-rod supporting rail, wherein one of said upper rail and said lower rail comprises said screw-rod supporting rail; a gear box, provided at an end of said screw-rod supporting rail, for rotationally driving said screw-rod; a feed-nut which is screw-engaged with said screw-rod and fixed to a feed-nut supporting rail, wherein the other of said upper rail and said lower rail comprises said feed-nut supporting rail; a pair of load transmitting members which are held by said screw-rod supporting rail at positions spaced from each other in an extension direction of said screw-rod supporting rail; and at least one load receiving member which is positioned between said pair of load transmitting members and provided on said screw-rod in a manner to restrict a position of said load receiving member on said screw-rod in an axial direction thereof, wherein said feed-nut supporting rail and said screw-rod supporting rail are respectively provided with openings which face each other, and wherein said pair of load transmitting members are provided with force application portions that are positioned closer to an opening of said screw-rod supporting rail than said screw-rod.