Transmission system of electric-auxiliary bike

• Main Authors: JANG, CHUEN-LIN, SHEU, KUEN-BAO
• Format: Patent
• Language: English
• Published: 21.10.2006
• Edition: 7
• Subjects: CYCLES; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; PERFORMING OPERATIONS; POWERED PROPULSION OF SLEDGES OR; RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES; TRANSPORTING

The present invention relates to a transmission system of an electric-auxiliary bike, comprising a hollow electric-auxiliary unit, a hollow decelerating unit, a first uni-directional clutch unit, a transmission unit, a pedal unit, and a second uni-directional clutch unit. The central axles of the hollow electric-auxiliary unit, the hollow decelerating unit and the pedal unit are installed concentrically, and a tread sensor is adopted to sense the pressure on the pedal; furthermore, a controlling unit and a rotation rate sensor are applied to control the on and off of the hollow electric-auxiliary unit so that the electric bike may move under different circumstances; thus, the hollow electric-auxiliary unit and the hollow decelerating unit may be installed with the central axle of the pedal of a tread sensing unit having simple mixed power controlling mechanism and smaller batteries concentrically.