Transmission mechanism for vehicles has back-up component having regulating unit that controls degree of blockade of back-up component

摘要

A back-up component provided for a front driving shaft and a rear driving shaft is movable between two positions. Movement is transmitted only to the front driving shaft when the back-up component is in the first position, and only to the rear driving shaft when the back-up component is in the second position. The back-up component includes a regulating unit for controlling the degree of blockade of the back-up component.