The invention provides a bicycle comprising a frame, a front wheel, a rear wheel, a saddle and a handlebar. A second fly wheel and a third fly wheel are arranged on the two sides of a chain wheel of the bicycle and are connected to a middle shaft rotatably; a first rotating shaft and a second rotating shaft are arranged on the left side and the right side of a lower tube of the bicycle, respectively, and are in rotatable connection with the lower tube and perpendicular to the lower tube; the first rotating shaft is vertically and fixedly connected with a first treading member; the rear portion of the second rotating shaft is vertically and fixedly connected with a second treading member; the front portion of the first rotating shaft is vertically and fixedly connected with a first pull rod and the front portion of the second rotating shaft is vertically and fixedly connected with a second pull rod; the bottom portion of the lower tube is provided with a pulley and a second chain; one end of the chain is fixedly connected with the first pull rod and the other end is fixedly connected with the second pull rod after rounding the second fly wheel, the pulley and the third fly wheel successively; the second chain comprises chain parts corresponding to the second fly wheel and the third fly wheel and a steel wire part corresponding to the pulley. The bicycle improves the utilization rate of the force exertion of the human body and enables riding to be easier.
Bicycle
2015-10-21
Patent
Elektronische Ressource
Englisch
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
BICYCLE WHEEL COMPONENT, BICYCLE, BICYCLE MANAGEMENT SYSTEM
Europäisches Patentamt | 2021
|