| 摘要 |
The rotation output of a continuously variable transmission (2) which transmits the rotation of an input shaft 1 at an arbitrary speed ratio is input to a sun gear (5A) of a planetary gear set (5) arranged on a final output shaft (6). A ring gear (5C) of the planetary gear set (5) is joined to the final output shaft (6). An output gear (3B) of a fixed speed ratio transmission (3) which transmits the rotation of the input shaft (1) at a fixed speed ratio is arranged on the final output shaft (6) and joined to a planet carrier (5B). An input gear 3A of the fixed speed ratio transmission (3), the output gear (3B), a device output gear (7), a final gear (12), the sun gear (5A), a planet gear (5D) of the planetary gear set (5), and the ring gear (5C) comprise helical gears having oblique tooth traces, and the directions of the tooth traces of the sun gear (5A), planet gear (5D) and ring gear (5C) are set so that a thrust load exerted by the planet carrier (5B), which rotates faster than the sun gear (5A), on the sun gear (5A), and a thrust load exerted by the planet carrier (5B), which rotates faster than the sun gear (5A), on the ring gear (5C), do not cancel each other out. A member (14) is further provided which supports the load acting on the sun gear (5A) along the final output shaft (6), and the directions of the tooth traces of the output gear (3B), input gear (3A), device output gear (7) and final gear (12) are set so that either of the thrust load acting on the device output gear (7) and the thrust load acting on the output gear (3B) is opposite to the thrust load acting on the ring gear (5C).
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