| 摘要 |
<P>PROBLEM TO BE SOLVED: To increase the working amount by effectively transmitting energies of a plurality of force transmission members to a ring gear for rotating a spool. <P>SOLUTION: A pipe 10 includes a cutout part 10c through which levers 17 of a ring gear 15 enter the pipe 10. An inner peripheral surface 10d of the pipe 10 opposing the cutout part 10c includes: a curved inner peripheral surface in a curved part 10b of the pipe 10; a linear inner peripheral surface in a linear part 10a of the pipe 10; and a transition part P from the curved inner peripheral surface to the linear inner peripheral surface. The transition part P is located closer to a position where balls 12a start to press the levers 17 of the ring gear 15 than an intersection Q where an imaginary straight line α extending from a cutout end part 10h of the cutout part 10c intersects, at a right angle, an imaginary extension line β of the inner peripheral surface 10d of the linear part 10a of the pipe 10. <P>COPYRIGHT: (C)2012,JPO&INPIT |
