GEARSHIFT MECHANISM OF MOTORCYCLE GEARBOX Russian patent published in 1994 - IPC

FIELD: control mechanisms of transport vehicle. SUBSTANCE: mechanism comprises shift shaft which, turning together with drive link, turns the body of ratchet mechanism counterclockwise. Driving pawl engages the opening in the disc thus turning the latter and the shift forks by means of curvilinear slots to a position corresponding to thrown-in gear. Simultaneously, a driven pawl slides over projection of ejector and becomes disengaged from corresponding disc opening. As the body is brought to initial position by a return spring (in a clockwise direction), the chamfer of the driving pawl is disengaged from the disc opening and is forced by a spring into the adjacent opening of the disc. The driven pawl slides in clockwise direction over projections of ejector and is forced by a spring into the corresponding opening of the disc. During a gear change the functions of the pawls are exchanged and further gearshifting proceeds in a similar manner. EFFECT: improved design. 5 dwg