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Continuously variable transmission apparatus

  • US 6,958,029 B2
  • Filed: 11/26/2003
  • Issued: 10/25/2005
  • Est. Priority Date: 11/28/2002
  • Status: Active Grant
First Claim
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1. A continuously variable transmission apparatus, comprising:

  • an input shaft;

    a toroidal-type continuously variable transmission disposed concentrically with the input shaft;

    a first rotation transmission shaft disposed in parallel to the input shaft;

    a first planetary-gear-type transmission disposed on the periphery of the first rotation transmission shaft so as to be concentric with each other, the first planetary-gear-type transmission including a first ring gear;

    a second planetary-gear-type transmission disposed on the periphery of the first rotation transmission shaft so as to be concentric with each other, the second planetary-gear-type transmission including a second carrier;

    a second rotation transmission shaft disposed in parallel to the input shaft and the first rotation transmission shaft;

    an output shaft disposed concentrically with the first rotation transmission shaft;

    a first power transmission mechanism for transmitting the rotation of the input shaft to the first ring gear of the first planetary-gear-type transmission;

    a second power transmission mechanism for transmitting the rotation of the input shaft through the second rotation transmission shaft to the second carrier of the second planetary-gear-type transmission; and

    , a switching mechanism for switching power transmission states between the input shaft and the output shaft through the first and second power transmission mechanisms over to each other, wherein, in a state where the power transmission through the first power transmission mechanism is allowed and the power transmission through the second power transmission mechanism is cut off, in accordance with the control of the transmission ratio of the toroidal-type continuously variable transmission, the output shaft be stopped while leaving the input shaft rotating.

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