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Stepless variable speed rear drive shaft for bicycles

A continuously variable speed, bicycle technology, applied in vehicle gearboxes, vehicle components, wheeled transmissions, etc., can solve the problems of laborious and time-consuming shifting, poor acceleration performance, and environmental impact.

Inactive Publication Date: 2015-04-29
孙晓雁 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] To sum up, the existing problems of the variable speed transmission for bicycles in the prior art are: shifting is laborious and time-consuming, the number of graded gears and the range of speed ratios are limited, the acceleration performance is not good, it is affected by the use environment, there is noise and the scope of application limited

Method used

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  • Stepless variable speed rear drive shaft for bicycles
  • Stepless variable speed rear drive shaft for bicycles
  • Stepless variable speed rear drive shaft for bicycles

Examples

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0036] See attached Figures 1 to 8 , the continuously variable rear drive shaft for bicycles in the figure includes a fixed central shaft 1, a small rear axle sprocket 26 and a rear axle hub 24 arranged on the fixed central axle 1, and the rear axle hub 24 is located on the small chain of the rear axle. One side of wheel 26; where:

[0037] One side of the small rear axle sprocket 26 is sequentially provided with a first group of planetary moving shaft gear train 21, a wedge claw type continuously variable transmission mechanism E, a second group of planetary driving shaft gear train 22 and a third group of planetary driving shaft gear train. The driving shaft gear train 23, the first group of planetary driving shaft gear train 21, the wedge-claw type continuously variable transmission mechanism E, the second group of planetary driving shaft gear train 22 a...

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Abstract

The invention relates to a variable speed rear drive shaft for bicycles, in particular to a stepless variable speed rear drive shaft for bicycles. The shaft comprises a fixed central shaft body, a rear shaft small chain wheel and a rear shaft hub which are arranged on the fixed central shaft body. The rear shaft hub is located on one side of the rear shaft small chain wheel. A first planetary movable shaft wheel train, a wedge claw type stepless speed changing mechanism, a second planetary movable shaft wheel train and a third planetary movable shaft wheel train are arranged on one side of the rear shaft small chain wheel sequentially and are located in the inner cavity of the rear shaft hub. Thus, the stepless variable speed rear drive shaft for bicycles has the advantages of high controllability allowing the variable speed to be in place instantaneously through simple actions, fine acceleration performance allowing continuous gradient-type shifting in various states, highly professional adaptability allowing high torque, low rotation speed and high transmission efficiency, high practicality allowing large adaptive coverage in the large speed ratio range, small size, lightness, noise avoidance and complete-tightness lubrication and the like.

Description

technical field [0001] The invention relates to a variable-speed rear drive shaft for a bicycle, in particular to a high-torque, low-speed, small-volume, low-mass, high-acceleration performance, high transmission efficiency, large speed ratio range, one-time accurate selection of speed ratio points, convenient and A continuously variable rear drive shaft for bicycles with a large application range. Background technique [0002] Generally, there are two kinds of speed change gears used in variable speed bicycles: internal speed change and external speed change. Although the development of processing technology has made these devices almost perfect, but due to the inherent limitations of their working principle and transmission mode, there are still many unsatisfactory performances in them. . [0003] There are the following technical problems in the variable speed transmission device for bicycles in the prior art: [0004] 1. Step-by-step shifting, using the original metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M11/14
CPCB62M11/14
Inventor 孙晓雁杨序李先明
Owner 孙晓雁
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