| 摘要 |
<P>PROBLEM TO BE SOLVED: To eliminate the need for replacement of plates even if a carrier for replacement different in the position of a protrusion is employed. <P>SOLUTION: One plate 21 constituting a planetary gear type reduction gear mechanism 16 is provided with: a first protrusion inserting hole 22 inserted by each protrusion 20B of a carrier 20; and a second protrusion inserting hole 24 inserted by each protrusion 25B of the replacement carrier 25. As a result, even if replacing a carrier 20 with a replacement carrier 25, the first protrusion inserting hole 22 provided in the plate 21 is inserted into each protrusion 20B of the carrier 20 and then the second protrusion inserting hole 24 provided in the plate 21 is inserted into each protrusion 25B of the replacement carrier 25. Accordingly, a planetary gear 18 supported by the carrier 20 and a planetary gear 26 supported by the replacement carrier 25 are axially retained by the one common plate 21, thus reducing the number of parts. <P>COPYRIGHT: (C)2010,JPO&INPIT |
