| 摘要 |
PURPOSE:To simplify a device, by providing balancers with a rotary shaft rotating in synchronism with a crank shaft of an internal combustion engine and by transmitting power through the rotary shaft for commonly using a power transmission shaft and a balancer shaft. CONSTITUTION:A crank shaft 2 of an internal combustion engine 1 is rotated together with a rotary shaft 6 which is rotated in synchronism with it through a crank gear 5 and an input gear 7. Balancer 8, 9 are mounted on a rotary shaft 6 for serving also as a balancer shaft. In addition, a centrifugal clutch 10 is provided at the outside portion of the rotary shaft 6 so that power is transmitted to a continuously variable transmission 31 via a clutch gear 14 and an input gear 30 and the power is transmitted to an output shaft 43 after being subject to a speed change. Then, the rotary shaft 6 serves as a balancer shaft as well as a power transmission shaft, whereby an arrangement is simplified and a device is made smaller is size. |
