| 摘要 |
<p>A belt driven continuously variable transmission unit 30 which converts the rotation of the input member 60 by continuously variable ratios, and a gear unit 20 such as a planetary gear unit to which the output torque from said continuously variable transmission unit 30 and torque from said input member 60 transmitted through a transfer unit 80 is fed and delivered to the output member 70, are provided. A selector means comprising a clutch C2 and arresting means F, B1 is provided on the input path to said gear unit 20 from said transfer unit 80. When the selector means is switched to low speed mode, the gear unit 20 functions as a reduction mechanism, whereas when the selecting means is switched to high speed mode, the gear unit 20 functions as a split-drive mechanism which combines the output torque from said continuously variable transmission unit 30 with the torque transmitted through said transfer unit 80. Formation of torque loop is prevented while combining the torques, by driving the element of the gear unit which supports reaction when the gear unit is functioning as a reduction mechanism.</p> |
