| 摘要 |
<p>A unicycle having a double acceleration function is disclosed, which includes two pairs of sprockets connected by two endless chains that can perform double acceleration of the unicycle, an one-way clutch that can continuously move forward the unicycle even if the operation of pedals is terminated, a height adjustment member adjusting the height of a saddle, a brake member controlling the speed of the unicycle, and a folding member folding the saddle. The unicycle also includes a frame, first and second rotation axes independently and rotatably fixed to intermediate and lower end portions of the frame, a wheel independently and rotatably mounted on the first rotation axis and having a break member on one side of the wheel, a pair of pedals coupled to crank shafts engaged to both ends of the first rotation axis, a first sprocket integrally engaged to one side of the first rotation axis, a second sprocket integrally engaged to one side of the second rotation axis, a first endless chain connecting the first and second sprockets, a third sprocket integrally engaged to the other side of the second rotation axis, a fourth sprocket integrally engaged to the wheel, a second endless chain connecting the third and fourth sprockets, and a saddle mounted on an upper end of the frame.</p> |
