Continuously variable transmission

A continuously variable transmission comprising:

• a housing provided in a case so as to be rotatable about an output shaft and to be rotatably circumscribed about the output shaft, and having an input driven gear fixedly circumscribed thereabout and engaged with an input drive gear fixedly circumscribed about an input shaft, the housing receiving power from the input shaft and rotating about the output shaft to serve as an input link of a lever crank mechanism;
• a variable pin positioned at a rotation center of the output shaft on one side of the housing and mounted to be movable in a radial direction of the output shaft;
• a coupler disk circumscribed about the variable pin so as to be movable in the radial direction of the output shaft together with the variable pin to operate as a coupler link when the variable pin is biased from the rotation center of the output shaft;
• at least four even-numbered pivot shafts inscribed in each of at least four even-numbered output gears of a first group with a clutch interposed therebetween, the at least four pivot shafts being engaged with a final output gear fixedly circumscribed about the output shaft and spaced by the same phase difference from each other around the final output gear;
• at least four even-numbered eccentric shafts protruding toward the variable pin from one end of each of the pivot shafts facing the variable pin and coupled to the pivot shafts such that the at least four pivot shafts operate as output links and the at least four even-numbered eccentric shafts are deviated from rotation centers of the pivot shafts, the at least four eccentric shafts being arranged around the output shaft with a same phase difference when the variable pin is positioned at the rotation center of the output shaft;
• and
• a track ring integrally provided to the coupler disk to guide the at least four even-numbered eccentric shafts such that the at least four even-numbered eccentric shafts are pivotable about rotation centers of the pivot shafts and revolvable around the rotation center of the output shaft.