The mechanism has a detection unit (101) comprising a disc (120) provided with, on a side, electrical tracks (122, 123), and two blades (124, 125) disposed opposite to the side. The detection unit detects the rotation of a flywheel (102). The blades contac...

The device has two circular portions (11, 12) each comprising external radial tooth. Each tooth cooperates with a steering system for provoking returning of a selective lever of an indicator system towards a neutral position. A deformable elastic portion (...