| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To easily assemble each of the members of a planetary gear mechanism by carrying out mutual positioning of each of the members in high precision while forming the planetary gear mechanism more compactly even in using it for motive power transmission. <P>SOLUTION: A carrier 34, a planetary gear 35 and an internal gear 37 are previously and integrally constituted as a sub assembly 38. A state where the planetary gear 35 only revolves and a state where the planetary gear 35 revolves and rotates are alternately repeated when the carrier 34 rotates through a torsion bar 13 by rotation of a spool. A cam plate 33 does not relatively rotate against a lock gear as the internal gear 37 rotates integrally with the lock gear to control rotation of the spool 9 when the planetary gear 35 only revolves. The cam plate 33 also relatively accelerates and rotates against the lock gear as it relatively accelerates ad rotates against the internal gear 37 when the planetary gear 35 revolves and rotates. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
