Seat slider device
A seat slider device may include: a lower rail attached to a body of a vehicle; and an upper rail attached to a seat and slidable with respect to the lower rail. The upper rail may include: a roller or a slider piece being in contact with a bottom plate of the lower rail; and a protrusion supporting the roller or the slider piece. The protrusion may be integrated with the upper rail.
1. A seat slider device comprising:
a lower rail attached to a body of a vehicle; and
an upper rail attached to a seat and slidable with respect to the lower rail;
wherein
the upper rail comprises:
a roller or a slider piece being in contact with a bottom plate of the lower rail; and
a protrusion integrated with the upper rail and supporting the roller or the slider piece, a hollow space being defined in the protrusion,
the roller comprises:
an inner ring fixed to the protrusion;
an outer ring arranged radially outward of the inner ring; and
rolling members arranged between the inner ring and the outer ring,
the protrusion comprises:
a large diameter portion being in contact with a side surface of the inner ring; and
a small diameter portion passed into the inner ring, and
the hollow space in the protrusion comprises:
a large diameter hole corresponding to the large diameter portion; and
a small diameter hole corresponding to the small diameter portion.
2. The seat slider device of claim 1 , wherein an end of a side surface of the protrusion comprises an expanded portion expanded outward, and the inner ring is fixed by the expanded portion.
3. The seat slider device of claim 1 , wherein an end of the protrusion is opened.
4. The seat slider device of claim 1 , wherein the protrusion is formed by deformation processing.