Transmission mechanism for automobile vehicle

A transmission mechanism for automobile vehicle, comprising a drive shaft, a driven shaft equipped with a gear change device, an output shaft coupled to the wheels, a coupling device connecting the drive shaft and the driven shaft, a device for reversing the direction of motion connecting the driven shaft to the output shaft, means for actuating a brake of the driven shaft and means for manually selecting the positions of engagement "Forward motion" or "Reverse motion" and positions "Neutral" and "Parking brake" of the reversing device constituted by a linkage comprising a lever for manually controlling the said positions, wherein the said actuating means are constituted by a circuit feeding the brake with pressurised fluid in which is disposed an electrovalve normally interrupting said circuit when it is not excited and of which the electrical excitation circuit comprises a first switch that may be actuated by said lever when it is manoeuvred in the sense of establishing a connection at the reversing device between the said driven and output shafts and wherein said linkage comprises an elastic device that may be compressed when the manoeuvring effort applied to the said lever reaches a predetermined value.