| 摘要 |
PURPOSE:To perform speed change operation in accordance with the eccentric amount of a crank mechanism, by converting eccentric rotary motion of the crank mechanism into rocking motion of plural connecting rods, taking out one-way rotary motion from said rocking motion through a one-way clutch and compounding said one-way rotary motion. CONSTITUTION:A sleeve 7 is operated by a shifter 6 and slided on an input shaft 2, then a crankshaft 4 is eccentrically operated by a helical groove 7a, provided in the sleeve 7, and a handle 4a with respect to the center of the input shaft 2 in accordance with a sliding amount of the sleeve 7, in this way a crank pin 5 is turned. One-way rotary motion is taken out from rocking motion of connecting rods with said crank pin 5 through a one-way clutch 10A and compounded, then rotary motion of a hub 8 is smoothly performed thus transmitted to an output shaft 3 through a suitably step different rotary shaft transmission mechanism 16. |
