| 摘要 |
A continuously variable transmission, which comprises a drive race for receiving power input, a driven race for transmitting power output and a set of rollers between the races. Each roller in the set is capable of rotating to transfer motion from the drive race to the driven race, is capable of tilting about a first tilt axis to vary a ratio of the continuously variable transmission, and is capable of tilting about a second tilt axis different from the first tilt axis. The transmission further comprises a ratio change actuator acting on each roller of the set for tilting the roller about its second tilt axis, a tilt of the roller about its second tilt axis inducing a reaction force on the roller tending to tilt the roller about its first tilt axis and thus provoke a ratio change. The transmission also comprises a synchronization member coupling the rollers, when a tilting movement is imparted to the rollers about their respective first tilt axes, the synchronization member constraining the rollers to tilt in unison about the respective first tilt axes to produce a coordinated ratio change.
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