Accelerator of bicycle

• Main Author: RUNHAI ZHANG
• Format: Patent
• Language: English
• Published: 13.09.2006
• 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 utility model relates to a bicycle, particularly an accelerator of the bicycle. The utility model comprises a centre shaft and a big chain disc; an upper centre shaft which is parallel to the centre shaft is arranged above a centre shaft frame by a support plate fixed to the centre shaft; a left gear and a right gear fixed to the center shaft are respectively arranged at both ends of the upper centre shaft; a big gear fixed to the centre shaft is arranged at the left end of the centre shaft; the big gear is engaged with the left gear; a transmission gear is sheathed at the right end of the centre shaft by a bowl of the center shaft; the transmission gear is engaged with the right gear; the big chain disk connected with a rear shaft by a chain is fixed on the transmission gear by a flange. A power transmission mechanism composed of the centre shaft, the big chain disc, the chain and a chain wheel of the rear shaft of an original bicycle is not changed; the centre shaft directly drives the big chain disc, which is changed; the centre shaft of the utility model drives the big chain disc by an intermediate gear; gear sizes are changed to accelerate. The utility model has the advantages of simple and compact structure, obvious speed increasing effect, labor saving in riding and low cost.