Multi-purpose touring gearshift racing car

Abstract

The invention discloses a multifunctional variable-speed racing bicycle for travelling. The racing bicycle comprises a bicycle frame, a front fork, a handle, a front wheel and a rear wheel, wherein a middle shaft of the bicycle frame is provided with a driving variable gear connected with a crank, a rear shaft is provided with a flying gear linked with the rear wheel, a driving shaft is arranged between the driving variable gear and the flying gear and the two ends of the driving shaft are provided with driving gears engaged with the driving variable gear and the flying gear. According to the racing bicycle provided by the invention, the problems that a chain is frequently to drop off, break off and the like in the driving process can be solved by changing chain driving into gear driving of the bicycle; meanwhile, a gravity arm can be reduced, and a power arm between a middle shaft crank and a gear lever that the feet of a rider can pedal to can be improved, therefore 35% labor saving can realized than the highest speed of the chain driving bicycle, and the speed is faster; furthermore, the handle is provided with a head supporting device, a rotary ancon and a damping device, therefore, the fatigue and jolting of the head and hands of the rider can be reduced in the course of long-distance riding; in addition, by adopting a damping rotary saddle, the friction of the crotch can be prevented, and the riding comfort can be improved.

Description

【Technical field】 [0001] The invention relates to a bicycle, in particular to a multifunctional touring speed-changing racing car. 【Background technique】 [0002] No matter the existing bicycles are ordinary bicycles, mountain bikes, road racing cars and various modified bicycles, they are all driven by chains. The chain-driven bicycles have various disadvantages, such as off-chain and broken chains, which often occur; The most important thing for a racing car is high speed, labor-saving and lightness. However, due to the force point and force arm of the chain-driven bicycle, it is impossible to increase the speed of this type of bicycle, and it is very laborious to use the highest speed. 【Content of invention】 [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a fast, labor-saving and comfortable multi-functional touring speed-changing racing car. [0004] The object of the present invention is achieved in that it i...

AI Technical Summary

Problems solved by technology

[0002] No matter the existing bicycles are ordinary bicycles, mountain bikes, road racing cars and various modified bicycles, they are all driven by chains. The chain-driven bicycles have various disadvantages, such as off-chain and broken chains, which often occur; The most important thing for a racing car is high speed, labor-saving and lightness. However, due to the force point and force arm of the chain-driven bicycle, it is impossible to increase the speed of this type of bicycle, and it is very laborious to use the highest speed.

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