| 摘要 |
PROBLEM TO BE SOLVED: To prevent a fallout of a shaft member inserted in a pipe member non-rotatably and movably in the axial direction. SOLUTION: A notch part 12 is formed in a part of the outer spline 11 of a shaft member 10. A slit 22 is formed in the tip part of a pipe member 20 having an inner spline 21. By fitting a fastening member 30 in the outer periphery of the vicinity of the tip edge of the pipe member 20, play of spline coupling is prevented from occurring. A fall out preventing member 40 is fitted in the fastening member 30. When the shaft member 10 is moved in a slip-off direction, the slip off prevention 13 of the notch part 12 is butted with a fall out preventing member 40, a further slip-off motion is blocked and a fall out is prevented from occurring. |
