Chainless drive variable-speed bicycle

Abstract

The invention discloses a chainless drive variable-speed bicycle. The bicycle comprises a front tube, the upper end of the front tube is rotationally connected with a handle, the lower end of the front tube is rotationally connected with a front fork, and the lower end of the front fork is in rolling connection with a front wheel. According to the bicycle, the force transmission arm, the upper arc-shaped rack, the lower arc-shaped rack, the arc-shaped rack and the first variable-speed sliding block are arranged to replace a conventional chain to transmit power, and the two one-way ball gears placed in the forward direction and the reverse direction are arranged, so that the rack can rotate in the rotating direction of the output shaft without reversing the output shaft; in reciprocating, the wheels can be kept to rotate in one direction always; and through simultaneously placing vertical arc-shaped racks at the left part and the right part, the feet can function on a back wheel in vertical functioning on pedals; and the bicycle has the advantages that the bicycle is novel in speed change, simple in structure, high in speed ratio, and labor-saving in riding. Parts are not easy to damage, and energy transmission efficiency is high.

Description

[0001] This application is a divisional application of the invention patent application with the application number: 2019107759557 and the title: "A Chainless Drive Variable Speed ​​Bicycle". The original application date is: August 22, 2019. technical field [0002] The invention relates to the technical field of bicycles, in particular to a chainless drive variable speed bicycle. Background technique [0003] Bicycles, also known as bicycles or bicycles, are usually small land vehicles with two wheels; after people ride on the bicycle, they use pedals as power, which is a green and environmentally friendly means of transportation, and can be used as an environmentally friendly means of transportation for transportation and travel; More and more people use bicycles as fitness equipment for exercising and cycling; cycling itself is also a competitive sport, including road cycling, mountain biking, track cycling, stunt cycling, etc.; [0004] The current common bicycle transm...

AI Technical Summary

Problems solved by technology

However, the processing of transmission shafts requires high precision and high cost, and the profit of bicycles is low. General bicycle companies cannot produce transmission shafts with reliable quality.

The final belt drive is sensitive to temperature changes, weak against environmental factors, expensive, and requires a special frame for installation and use.

The chain drive bicycle uses the front and rear derailleurs to drive the chain to combine on the corresponding sprocket to obtain the corresponding transmission ratio. Of course, there is also a bicycle with a central shaft gearbox, which uses gear combination to change speed, but the corresponding price is relatively expensive; lack of a better , a simpler bicycle drive and shifter

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