CONTINUOUSLY VARIABLE TRANSMISSION

PURPOSE:To improve the durability of a continuously variable transmission and prevent creation of both vibration and noise by turning two eccentric rotary bodies, to oscillate carriers in the different phases and taking out those oscillation motions from a transmitting shaft. CONSTITUTION:When an input shaft 7 is turned, a primary eccentric rotary body 27 and a secondary eccentric rotary body 28 start turning and primary and secondary carriers 43 and 50 then start oscillating motion. The oscillating motions of said carriers are taken out as output of a high torque from an output shaft 14 via both a transmission shaft 37 and a speed changing wheel 18. To vary speed change ratio, an operating member 9 has only to be screwed forward or rearward. The rate of eccentricty between the primary and the secondary eccentric rotary bodies are thereby varied so that reduction ratio may be also varied.