| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power transmission mechanism for improving fatigue strength of an outer peripheral member by easing stress concentration to the outer peripheral member during transmission of power. <P>SOLUTION: A spline 5 is formed on an inner peripheral surface of a trunnion 3 which is the outer peripheral member positioned on an outer periphery of a connecting part 2 which is an end of an intermediate shaft 1, and a tapered tooth height reduction part 5a is formed on a shaft member insertion side section of the spline 5. The tooth height reduction part 5a is formed to have the tooth height reduced from the shaft member counter-insertion side to the shaft member insertion side. An axial position of a maximum tooth height start part of a spline 4 formed on an outer peripheral surface of the connection part 2 as shown by Z<SB>1</SB>in a figure is set between an axial position of the axial member insertion side end part of the tooth height reduction part 5a shown by X<SB>1</SB>in the figure and the maximum tooth height start part shown by Y<SB>1</SB>in the figure. <P>COPYRIGHT: (C)2008,JPO&INPIT |
