| 摘要 |
PROBLEM TO BE SOLVED: To realize a structure capable of further improving strength of a locking ring 13a while reducing a size and a weight.SOLUTION: A locking portion 20 of a locking ring 13a is locked in a locking groove 12 formed on a tip portion of an input rotating shaft 1b, and an inner side face of the locking portion 20 is brought into contact with an outer side face of an input-side disc 2b. By strongly pressing an outer peripheral face of a fitting cylindrical portion 21 of the locking ring 13a by a single cylindrical pressing ring 22, the fitting cylindrical portion 21 is supported and fixed to an outer peripheral face of the tip portion of the input rotating shaft 1b. |
