Patent ID: 7523913

Claim:
A seat position adjusting apparatus for a vehicle comprising: a lower rail adapted to be provided on a floor of a vehicle; an upper rail adapted to support a seat and being relatively movable with the lower rail; a locking mechanism restricting relative movement between the lower rail and the upper rail, and the locking mechanism releases restriction on the relative movement between the lower rail and the upper rail; an operating member releasing restriction of the locking mechanism on the relative movement between the lower rail and the upper rail; a position memorizing mechanism that memorizes a position of the upper rail relative to the lower rail; a memorized position releasing member that releases the position of the upper rail relative to the lower rail memorized by the position memorizing mechanism, when the operating member is operated; a sub rail fixed to the lower rail; a movable member provided on the position memorizing mechanism and being supported by the sub rail so as to be moved in a position adjusting direction of the seat; an engaging member supported by the movable member so as to be engageable/disengageable with/from the sub rail; and a biasing member that exerts operation force on the engaging member in order to engage the sub rail and the engaging member when the memorized position releasing member is spaced from the engaging member, wherein the biasing member includes a first operating arm portion and a second operating arm portion that are positioned at two points on the engaging member with a predetermined distance maintained therebetween in order to exert the operation force at the two points on the engaging member.