| 摘要 |
<p>The invention relates to a mechanism for changing the longitudinal position of a vehicle seat with respect to its baseplate, comprising a nut (3) mounted on the baseplate (1), a screw (6) mounted on the framework (2) of the seat and interacting with the nut, a tangential wheel (7) which is integral in angle with the screw, an endless screw (10) interacting with the tangential wheel and mounted on the framework of the seat and means of control (M) for driving the endless screw. The assembly constituted by the screw and by the tangential wheel, mounted axially slidably with respect to each other, is mounted on the framework of the seat with the aid of two ball joints, one (11,12) of which is centred at the centre of the tangential wheel and carried on the same rigid support member (14) as the endless screw and the other (15,16) of which is situated at the end of the said assembly which is the furthest from the tangential wheel. <IMAGE></p> |
