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1. (WO2018178529) REDUCED VIBRATION GEARBOX

Pub. No.:    WO/2018/178529    International Application No.:    PCT/FR2018/050476
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Fri Mar 02 00:59:59 CET 2018
IPC: F16H 63/30
Applicants: PSA AUTOMOBILES SA
Inventors: MATIAS, Carlos
Title: REDUCED VIBRATION GEARBOX
Abstract:
Gear ratio shift drive shaft, for a gearbox, the shaft comprising a finger (1103) disposed radially on the shaft (100) for interacting with a fork crosshead, the finger (1103) resting against the fork crosshead for the purposes of coupling or decoupling, by means of two opposing convex generatrix cylindrical surfaces (1103d, 1103e) according to a planar symmetry, and wherein the convex generatrix surfaces (1103d, 1103e) of the finger (1103) have a distal section of constant curvature (1103d) for resting against the fork crosshead when the finger (1103) is rotated to engage a first of the two ratios and a proximal section (1103e) of a profile that is flatter than that of the distal section to provide a space between the corresponding bearing surface of the fork (302) and the finger (1103) after the finger (1103) has been rotated to engage the second of the two ratios.