The invention relates to the technical field of bicycles, and discloses a labor-saving bicycle. The bicycle comprises a bicycle frame, a front wheel, a rear wheel, an inner shaft, an outer shaft, a first pedal lever mechanism, a second pedal lever mechanism, a gear transmission mechanism, a first chain transmission mechanism, a transmission gear box and a second chain transmission mechanism. The outer side of the inner shaft is sleeved with the outer shaft, and the rear wheel is mounted on the outer shaft; the first pedal lever mechanism is mounted at one end of the inner shaft, and the second pedal lever mechanism is mounted at the other end of the inner shaft through the gear transmission mechanism; the first chain transmission mechanism is connected between the inner shaft and an input shaft of the transmission gear box, and the second chain transmission mechanism is connected between the outer shaft and an output shaft of the transmission gear box; and the transmission gear box is mounted on the frame. The bicycle has the advantages of being simple in structure and capable of achieving multi-change speed and labor saving.
Labor-saving bicycle
2015-08-26
Patent
Electronic Resource
English
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |