| 摘要 |
Transmission having continual variation, comprising a casing 15 and a driven shaft supported coaxially in rotation by the casing, a driving toric disc 2 and a driven toric disc engaged with these shafts in order to turn with them, the opposing surfaces of the discs interacting together in order to form a toroidal cavity, traction rollers 3 arranged symmetrically in the toroidal cavity with respect to the axes of the driving and driven shafts, journals 4 rotatably supporting the traction rollers and supported by the casing 15 in order to pivot about a pivoting axis Z-Z perpendicular to the axis of rotation of the traction rollers, and pressure means 5 for pushing the driving and driven toric discs and the traction rollers 3 against each other in order to bring them into engagement with each other and give rise to a traction force Ft, characterised by a support device 6 for mounting the journals 4 in the casing 15 in such a manner that they can move slightly in the direction of the pivoting axis, a screw device 7, 8 at the end of the pivoting axis of the said journals 4, and a linking mechanism 11-14 for changing speed on the screw device. <IMAGE>
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