| 摘要 |
<P>PROBLEM TO BE SOLVED: To reliably stop a gear from coming off a revolving shaft, without damaging the revolving shaft. <P>SOLUTION: A gear mounting portion 23c of a revolving shaft 23A includes a shaft part 23e which is fitted into a connection part 24e of a gear 24 having a D-shaped cross section and has a D-shaped cross section, one flexible part 23f having flexibility in an axial direction, and a stopper part 23g provided at a front end part of the flexible part 23f. The stopper part 23g is in a state of projecting outward of the shaft part 23e, and the shaft part 23e is fitted to the connection part 24e after the stopper part 23g passes a second hole part 24y of a hollow shaft 24a. The flexible part 23f is maintained in a bending state till the stopper part 23g passes the second hole part 24y of the hollow shaft 24a, and the flexible part 23f is released from the bending state and is engaged with the gear 24 after the shaft part 23e is fitted to a first hole part 24x of the connection part 24e. <P>COPYRIGHT: (C)2013,JPO&INPIT |
