Safety interlock device for a motor vehicle gearbox control

摘要: In a motor vehicle gearbox the selector rods (30-33) carrying forks which actuate gear coupling devices are disposed with their axes (30a-33a) at same distance from axis (17) of shaft associated. When one is moved away its neutral position other locked in by locking means (18) including first series dowels (34) slidable separate substantially parallel seats (35) formed casing, and cooperating respective notches (30b-33b) provided on rods. The said open into common cylindrical cavity (36), extending transversely thereto, there train pins (37) resiliently thrust against another. rod actuated associated dowel projects (36) causing displacement auxiliary such that these latter obstruct exits