The invention provides a convenient driving device for a bicycle. The convenient driving device consists of a convenient fly wheel (1), a main drive rope (2), a slave drive rope (3), four pulleys (4), a pedal (5) and a pulley spring seat (6), wherein the convenient fly wheel is provided with a middle partition plate, an inner-side baffle, an outer-side baffle, an inner-side semicircular slot and an outer-side semicircular slot; the main drive rope (2) is fixed at the bottom of the inner-side semicircular slot; the slave drive rope is fixed at the bottom of the outer-side semicircular slot; the four pulleys are respectively fixed at the middle part and the front end of a bicycle body in the up-and-down direction; the main drive rope is wound anticlockwise four laps in the inner-side semicircular slot, is wound around one pulley and is connected with a rear hook of the pedal; the slave drive rope is wound clockwise a half lap in the outer-side semicircular slot, is wound around one pulley and the pulley spring seat (6), and then is connected with a front hook of the pedal. Two convenient driving devices disclosed by the invention are respectively arranged on the left side and the right side of the bicycle. Through the adoption of the convenient driving device, the bicycle speed and the slope climbing force can be regulated by regulation of pedal tramping speed and distance, and abrasion of corresponding components is also avoided, so that the service life of the convenient driving device is prolonged.
Convenient driving device for bicycle
2016-01-06
Patent
Electronic Resource
English
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |