STRUCTURE FOR FITTING SPLINE SHAFT FOR CONSTANT VELOCITY JOINT

摘要

PROBLEM TO BE SOLVED: To restrict the concentration of the stress to the predetermined part, to simplify the whole structure of a device, and to facilitate the control of a driving shaft. SOLUTION: A crowning of a spline tooth 70 is formed of a nearly central linear tooth part 72 and a left and a right curved tooth parts 74a and 74b formed so that the tooth thickness thereof is gradually reduced toward the ends. The tooth thickness A of the crowning formed at the ends of the spline shaft is set smaller than the tooth thickness B of the crowning formed at the central part of the spline shaft so as to form the spline shape into asymmetry with a view from the center O of the spline tooth 70.