Patent ID: 6588722
Filing Date: 2003-07-08
Classification: B60N

Abstract:
A seat slide apparatus comprising:a lower rail mounted to be long in a longitudinal direction of a seat mounting floor surface; and an upper rail guided and supported so as to freely slide in a longitudinal direction on the lower rail and mounted and fixed to a side of a seat main body, wherein the lower rail having a main body portion formed in a substantially upward-C shape and a pair of left and right upper side portions extended inward from front end sides of both side portions in the main body portion so as to form an opening portion, roller receiving step portions are formed in both sides of a bottom portion in the main body portion, circular arc surfaces formed in the roller receiving step portions, and a slider receiving portion provided in a lower surface side of the upper side portion; and the upper rail having a main body portion formed in a substantially downward-C shape so as to be assembled in the lower rail, a vertical wall protruding upward from a center of an upper wall in the main body portion and protruding upward from the opening portion of the upper side portion in the lower rail, and a slider receiving portion formed at an upper end of the upper wall in the main body portion, wherein a slider is inserted between the slider receiving portion in the lower rail and the slider receiving portion in the upper rail, a roller is inserted between a step portion of the bottom portion in the main body portion of the lower rail and the upper wall in the main body portion of the upper rail, the roller is pivoted to roller shafts mounted to both side portions in the main body portion of the upper rail, and separated into left and right sections at a substantially center portion of the roller, and both side portions of the roller are mounted on taper surfaces downward inclined toward a center in a width direction formed in the step portion of the bottom portion in the main body portion of the lower rail.