| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicle rail attachment structure which can suppress that foreign matters remain in a lower rail.SOLUTION: A vehicle rail attachment structure has a structure in which a lower rail is attached to a vehicle floor via a bracket. The lower rail and the bracket are connected to each other with fastening bolts 40, and bolt heads 42 of the fastening bolts 40 are arranged so that an angle which is formed of long axis directions of the bolts and a longitudinal direction DA of the lower rail 10 is set within an attachment error range. Contour lines of the bolt heads 42 are formed so as to approximate a long axis LL as progressing toward a second point from a first point in a zone reaching the second point which intersects with the long axis LL from the first point which intersects with a short axis LS. The bolt heads 42 are formed so that occupation widths of the bolt heads in a second arrangement becomes smaller than or equal to occupation widths of the bolt heads 42 in a first arrangement in a relationship between the first arrangement and the second arrangement when the bolt heads 42 are rotated up to a maximum angle within the attachment error range from the first arrangement.SELECTED DRAWING: Figure 8 |
