A vehicle seat includes a seat back frame and a head restraint assembly supported on the seatback frame within a head restraint guide, the head restraint guide includes a cylindrical tubular body adapted to receive a support post of the head restraint asse...

The device (1) has an assembly support (7) arranged to allow a transverse angular displacement of a sheath (4), around a lower end of the support between a latching position and a sliding motion position. A projection (5) fits in a notch in the latching po...