| 摘要 |
<p>The invention relates to machines with pedal gear. Telescopic crank is consisted of telescopic rod and link mechanism. Telescopic rod is installed on driving-axle of pedal gear, and pedal is installed on the other end of telescopic rod. The link mechanism constitutes two levers (live and stationary) pivotally connected against each other. The loose end of stationary lever is fixed to the driving-axle of the pedal gear. The loose end of live lever is fastened to the pedal. The invention also provides and enables the crank length regulation based on the anthropometric size of a user for enhancement of the scope of the crank usage regardless of the pedal drive application.</p> |
