Patent ID: 8092314
Filing Date: 2012-01-10
Classification: F16D

Abstract:
1. A power transmission structure comprising: a male yoke including a shaft portion, a through hole extending through the shaft portion generally at a center portion thereof in an axial direction, and a connecting portion integrally formed at one end of the shaft portion; a sleeve spline-fitted to the shaft portion so as to allow a sliding movement between the male yoke and the sleeve; a first lid member which closes an open end of the sleeve remote from the connecting portion of the male yoke, and is fixed to the sleeve; and a second lid member which closes an open end of the through hole closest to the connecting portion, and is fixed to the male yoke; wherein the through hole includes: wherein the second lid member includes an air vent hole that extends therethrough in the axial direction and is disposed so as to partially overlap with an inner peripheral surface of the first passage portion in the axial direction.