Vehicle seat position adjusting device

One kind of seat position adjusting device, comprising: a slide control means having a vehicle floor opposite the seat and slidably supported relative to the vehicle floor so that relative sliding movement of the seat relative to the vehicle seat by limiting the vehicle floor at a predetermined holding position slide lock mechanism; the seatback relative to the seat cushion can be rotated about the rotational axis against adjusting means; and passage means and against which is seated in the slide between the adjustment means, means for actuating the sliding adjustment locking mechanism in It means operating against the seat back by adjusting the relative angle of the seat cushion by greater than or equal to a predetermined rotation angle, allowing the seat sliding relative to the vehicle floor. Seat position adjusting apparatus characterized in that the passage means includes a detection plate for detecting a predetermined angle of the seat back relative to the seat cushion or more rotating and come to rest in alignment adjusting device comprises adjusting means against the contours of the seat cushion and the relative extending direction of the axis of rotation parallel to the back support surface.