CONTINUOUSLY VARIABLE TRANSMISSION OF BICYCLE

摘要

PURPOSE: A continuously variable transmission for a bicycle is provided to increasing working efficiency and transmission efficiency of a bicycle by using hydraulic energy stored in a hydraulic system. CONSTITUTION: A continuously variable transmission for a bicycle comprises a first gear part(20), a hydraulic generating part(30), a hydraulic braking part(40), a hydraulic driving part(50), and a second gear part(60). Rotating force of pedals is delivered to the first gear part. The hydraulic generating part is installed in the downstream of the first gear part to generate hydraulic pressure by the rotating force of the pedals. The hydraulic braking part is installed in the downstream of the hydraulic generating part to open and close a passage of the hydraulic pressure. The hydraulic driving part is installed in the downstream of the hydraulic braking part to generate driving force by the hydraulic pressure generating in the hydraulic generating part. The second gear part is installed in the downstream of the hydraulic driving part and converts the driving force generating in the hydraulic driving part in order to supply to a bicycle rear wheel.