| 摘要 |
PURPOSE: A crank structure for improving a torque generation ratio is provided to generate larger torque with a power generating source of same capacity, thereby improve fuel efficiency and working efficiency. CONSTITUTION: A crank structure comprises elliptical cog wheels(3). A crank arm is replaced with the elliptical cog wheels. The elliptical cog wheel eccentricity-rotates while interlocking with the other elliptical cog wheel having the same size and shape, thereby generating torque. |
