Patent ID: 8919719

Claim:
A vehicle seat sliding device comprising: a lower rail adapted to be fixed to a vehicle floor, wherein the lower rail includes a bottom wall, two side walls protruding upward from two opposite lateral sides of the bottom wall, a first end portion, and a second end portion opposite to the first end portion; an upper rail adapted to be fixed to a vehicle seat and coupled to be movable relative to the lower rail at an upper side of the lower rail; a projection arranged in a vicinity of the first end portion of the lower rail, wherein the projection protrudes upward from the bottom wall; a fitting recess formed in the bottom wall at a location toward the second end portion of the lower rail from the projection; and a block body set on the bottom wall, wherein the block body extends to at least the projection and includes a slanted surface provide at a location toward the second end portion from the projection, and the slanted surface rises from the bottom wall as the first end portion becomes closer, and the block body includes a fitting protrusion, which is fitted to the fitting recess to position the block body in a lateral direction, and a fitting wall, which is at least partially fitted to the projection to position the block body in the lateral direction.