A bicycle electronic transmission system

Abstract

The invention relates to the technical field of sports equipment, in particular to a bicycle electronic speed changing system. According to the bicycle electronic speed changing system, physical consumption of a rider during gear shifting can be reduced, extending and retracting of a speed changing cable can further be controlled automatically, and the gear shifting speed is increased. According to the adopted technical scheme, the bicycle electronic speed changing system comprises a speed changer rear derailleur and a control module, wherein the speed changer rear derailleur and a speed changer front derailleur are connected with the control module through signal lines correspondingly.

Description

technical field [0001] The invention relates to the technical field of sports equipment, in particular to an electronic transmission system for a bicycle. Background technique [0002] Cycling is a type of exercise that requires very high equipment, and bicycle transmissions are widely used in the category of cycling. For example, road bike races, triathlon races, bicycle time trials, mountain bike races, mountain downhill races, these race cars must be equipped with corresponding bicycle transmissions. At present, there are many classification methods of bicycle transmissions, which can be divided into mountain racing, road racing and commuting according to the application; according to the driving control method, they can be divided into mechanical control and electronic control. [0003] The mechanically controlled transmission uses a manipulator to cooperate with a mechanical transmission. The manipulator generally has a built-in ratchet mechanism linked to the transmis...

AI Technical Summary

Problems solved by technology

Mechanical transmissions require people to manually move the shift lever to change gears. The lever often requires a lot of force to move, and the driver will increase physical exertion when riding, and the shift process is relatively slow.

Moreover, the control of the ratchet device in the manipulator is not precise, and it is easy to be misaligned with the stroke of the rear gear.

Occasionally, there will be problems such as wrong gear jumping when changing gears, and the ratchet device is also prone to mechanical failures, resulting in gear failure

The one or two-meter-long transmission cable is sensitive to temperature and vibration. Changes in external temperature will change the length of the transmission cable, resulting in inaccurate transmission or failure.

[0004] The electronically controlled transmission is a small motor controlled by the controller to drive the transmission up and down. The rider only needs to send a signal to the controller through the up / down button on hand. Although the electronically controlled transmission has the characteristics of fast shifting and accurate shifting advantages, but due to its high production cost and difficulty in daily maintenance, the possibility of its large-scale application is limited

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