| 摘要 |
<p>[Object] To provide a compound planetary gear mechanism that realizes a high reduction gear ratio and accomplishes high accuracy and high efficiency. [Means of Realizing the Object] Two planetary gear mechanisms 1 and 2 are provided. The first planetary gear mechanism 1 includes a first sun gear SG 1 with an input shaft 3 coupled to a center of the first sun gear SG1, a plurality of first planetary gears PG1, and a first outer gear OG1 secured to a stationary frame. The second planetary gear mechanism 2 includes a second sun gear SG2 that is coaxial to and integral with the first sun gear SG1, a plurality of second planetary gears PG2, and a second outer gear OG2 with its center secured to an the output shaft 4. A common carrier 9 includes a first planetary support shaft 5 that rotatably supports the first planetary gear PG1 and a second planetary support shaft 6 that rotatably supports the second planetary gear PG2 and that is independent of the first planetary support shaft 5.</p> |
