| 摘要 |
<p>A continuously variable transmission comprises a sun wheel (11, 66) and at least one planet wheel (3, 65) having a double, essentially conical surface (30, 31, 64, 71, 72), which planet wheel (3, 65) interacts on one side with the sun wheel (11, 66) and on the other side with an annulus wheel (2, 73), as well as adjusting means (5, 6, 16) for changing the transmission ratio. Each planet wheel (3, 65) is provided with an intermediate wheel (9, 59) which interacts on one side with the sun wheel (11, 66) and on the other side with said planet wheel (3, 65). Each planet wheel (3, 65) and, where appropriate, intermediate wheel (9, 59) is also adjustable about an imaginary axis which runs transversely to the centre line of the sun wheel (11, 66), such that each planet wheel (3, 65) can be brought into positions with respect to the annulus wheel (2, 59) in which they can roll with respect to one another so as to describe a helical path. As a result, the planet wheel (3, 65) and the sun wheel are given a different position with respect to one another in the axial direction, which produces a different transmission ratio. <IMAGE></p> |
