GEAR BICYCLE

摘要

PURPOSE: A geared bicycle capable of the gear transmission according to traveling states is provided to enable a user to conveniently have gear transmission while checking the current gear state. CONSTITUTION: A geared bicycle capable of the gear transmission comprises a frame(10), a front-wheel gear(20), a rear wheel gear(30), a chain(40), a lead derailleur(50), a motor(60) and a controller(80). The front-wheel gear is connected to pedal and is combined with the frame. The rear wheel gear is combined with the frame and is connected with the rear wheel gear. The chain surrounds the front-wheel gear and the rear wheel gear. The controller controls the drive of the motor.