The invention discloses a multifunctional variable-speed racing bicycle for travelling. The racing bicycle comprises a bicycle frame, a front fork, a handle, a front wheel and a rear wheel, wherein a middle shaft of the bicycle frame is provided with a driving variable gear connected with a crank, a rear shaft is provided with a flying gear linked with the rear wheel, a driving shaft is arranged between the driving variable gear and the flying gear and the two ends of the driving shaft are provided with driving gears engaged with the driving variable gear and the flying gear. According to the racing bicycle provided by the invention, the problems that a chain is frequently to drop off, break off and the like in the driving process can be solved by changing chain driving into gear driving of the bicycle; meanwhile, a gravity arm can be reduced, and a power arm between a middle shaft crank and a gear lever that the feet of a rider can pedal to can be improved, therefore 35% labor saving can realized than the highest speed of the chain driving bicycle, and the speed is faster; furthermore, the handle is provided with a head supporting device, a rotary ancon and a damping device, therefore, the fatigue and jolting of the head and hands of the rider can be reduced in the course of long-distance riding; in addition, by adopting a damping rotary saddle, the friction of the crotch can be prevented, and the riding comfort can be improved.
Multifunctional variable-speed racing bicycle for travelling
2015-06-03
Patent
Elektronische Ressource
Englisch
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |