Patent ID: 8810240

Claim:
A seat slide position detection device for a vehicle, comprising: a lower rail attached to a vehicle floor and having a longitudinal direction and a width direction substantially perpendicular to the longitudinal direction, the lower rail having a first side and a second side opposite to the first side in the width direction, the first side including a side surface and an upward wall portion extending upward along the side surface; an upper rail supported by the lower rail and slidable with respect to the lower rail in the longitudinal direction of the lower rail; a detection target portion provided in the upward wall portion of the lower rail in a predetermined range in the longitudinal direction of the lower rail; a position sensor disposed at the upper rail between the upper rail and the upward wall portion to face the detection target portion; and a protection plate attached to the upper rail and including a downward wall portion extending downward along a first surface of the upward wall portion on the first side of the lower rail, wherein the position sensor comprises a magnetic sensor, wherein the position sensor has a detection surface to detect whether the detection target portion faces the detection surface, and wherein the protection plate is disposed to cover the detection surface and is spaced apart from the detection target portion in the width direction.