| 摘要 |
PROBLEM TO BE SOLVED: To enable rotation torque to be transmitted without being subjected to dropping-out action in either of forward or reverse rotation of a spline shaft. SOLUTION: In fitting constitution of a spline shaft and spline hole, locking protrusion parts 14a, 14b included in the left and right tooth surfaces 4a, 4b of the spline groove part in the spline hole are formed integrally with the left and right tooth form surfaces of a shaft tooth form 11 of the spline shaft. |
