| 摘要 |
The present invention relates to a continuously variable gear ratio changing system suitable for use as a bicycle gear but generally useable in other applications, There is provided an input for receiving rotational motion from a source, an output for transmitting rotational motion to a wheel or the like and a continuously variable transmission mechanism. The continuously variable transmission mechanism comprises a swashplate assembly where a swashplate is rotatably coupled to the input for rotation about a swashplate bearing such that rotational movement of the swashplate is transferred to the output. Control means vary the angle of the swashplate assembly and a coupling which has a reciprocating member moves along the direction of a first axis of rotation in response to reciprocal movement such that the angle of the swashplate assembly with respect to the first axis of rotation determines the proportion of the input which is transmitted to the output via the coupling and therefore the gear ratio of the gear in use. |
