| 摘要 |
A chain gear (1) for gearing an engine torque comprises three gearing stages, wherein the first gearing stage is formed by a first gear rim (6) and a fourth gear rim (9), the second gearing stage is formed by a second gear rim (7) and a fifth (10) gear rim, and the third gearing stage is formed by a third gear rim (8) and a sixth gear rim (11). The first gear rim (6), the second gear rim (7) and the third gear rim (8) are disposed on a first shaft (3), and the fourth gear rim (9), the fifth gear rim (10) and the sixth gear rim (11) are disposed on a second shaft (4). A transmission chain (27, 28, 29) is provided in each gearing stage for transmitting the torque. |
