| 摘要 |
PURPOSE:To prevent the interferance of an annular member and sleeve splines, by providing the annular member with projections corresponding to cam portions, and by providing the annular member with recesses located between the projections and engaged with grooves provided on the peripheral surface of the boss of a blocking ring. CONSTITUTION:An elastic annular member 7 is provided with three projections 7a located at circumferential intervals and corresponding to cam portions 6. The member 7 is also provided with recesses 7b between the projections 7a. The annular member 7 is fitted on the boss 5b of a blocking ring 5 and engaged at the recesses 7b with three grooves 8 provided at circumferential intervals on the peripheral surface of the boss 5b. The annular member 7 is thus mounted on the ring 5 so that the member 7 is kept from rotating. |
