| 摘要 |
It comprises a section member with a fastening area engaging the section member to the vehicle door through a hole through which a screw is passed. The rail may be rotated relative to the vehicle door by means of a protrusion formed around the hole where the screw is projecting therefrom, the free end of which is fitted into a hole formed in the vehicle door and screwed up into a nut through a washer having a surface complementary to the shape of the protrusion. This protrusion may be either a deep drawing formed on the rail, an additional piece or an elastic washer provided in the surface of the rail.
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