| 摘要 |
PURPOSE:To simplify a supporting structure of a planatary gear reducer by lockingly assembling a supporting bracket of an internal ring gear in a planatary gear reducer to a casing together with the internal ring gear using an engaging projection provided on either of the internal ring gear and casing. CONSTITUTION:A center bracket 11 is assembled to a gear cover 13 together with an internal ring gear 9c. Accordingly, the projection end of an engaging projection 41 is engaged with an engaging recessed portion 43, so that both the internal ring gear 9c and center bracket 11 are locked to a gear cover 13. For locking a separator 6, a pair of cylindrical projecting portions 44 are provided at positions diagonal to each other in correspondance with an engaging cut-off portion 42 of the center bracket 11. The thrust force, which is generated by fastening a motor casing 2b to a gear cover 13 with a set bolt 45, is applied around respective outer peripheries of the separator 6 and center bracket 11. |
