SHAFT OF FORK OF GEARBOX, FORK COMPRISING IT AND METHODS OF MANUFACTURE, AND GEARBOX COMPRISING AT LEAST ONE SUCH FORK

摘要

Vehicle gearbox fork stock (23, 33), made of a first material, comprising a clutch (11) consisting of a notch (12) having an open side, a notch bottom (13) and two side walls (14, 15) which are substantially perpendicular to said notch bottom (13), characterized in that it comprises an additional piece (22; 32) having an upper face and a lower face around which the butt (9) was overmolded, made of a material different from that of the remainder of the butt (9) and having a Young's modulus, an elastic limit and a tensile strength greater than those of said first material of the butt (9 ), said additional piece (22; 32) having a notch (24) intended to surround the notch (12) of the dog (11) or to overflow on at least a portion of the inner periphery of the notch (12) of the clutch (11). Transmission fork (23; 33; 56) having such a stick, integral with said fork (23; 33; 56), and gearbox having at least one such fork (23; 33; ). Methods of manufacturing such a butt (9) and such a fork (23; 33; 56).