| 摘要 |
PURPOSE:To accelerate a crank wheel at a predetermined angular position by fixing a sinusoidal guide tube on the same axis as the rotary axis of the wheel and providing freely turning steel balls in the tube at the turning center and both ends. CONSTITUTION:Guide tubes 4, 4a are attached to the upper surface of a spoke 2 fixed or the turning axle 1. The guide tubes 4, 4a are formed in flat and sinusoidal shapes which extend in opposite directions. A steel ball 5 is disposed at the center of the sinusoidal tube to turn freely about the center of the turning axle 1. A proper number of air apertures 5 are formed through the end faces 10 of the uniteel guide tubes 4, 4a. Rods 7, 7a secured respecting at the same faces, hold steel balls 8, 8a while allowing their free rolling. Steel balls 9, 9a are movably disposed between the center steel ball 5 and their corresponding end steel balls 8, 8a. |
