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bicycle transmission

A transmission and bicycle technology, applied to bicycle accessories, vehicle gearboxes, bicycle control systems, etc., can solve the problems of not having the function of shifting, not being able to adapt to different groups of people and different road use needs, etc.

Active Publication Date: 2019-10-18
黄锋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, these two shared bicycles do not have the function of variable speed, and cannot adapt to the needs of different groups of people and different roads.
[0003] There is no bicycle transmission designed for two types of shared bicycles on the market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Figure 7 It is a schematic diagram of the first shift design of the present invention. One of circle 1 and circle 2 shown in the figure is the inner ring of the driving wheel, and the other is the inner ring of the driven wheel, and the drive wheel sets shown in the figure are all shown in the state of transmission fit.

[0067] In the bicycle transmission provided by the embodiment of the present invention, the driving wheel and the driven wheel are arranged coaxially, and the radius of the inner circle of the driving wheel is different from that of the driven wheel.

[0068] like Figure 7 As shown, in this embodiment, two transmission wheel sets are taken as an example for illustration. For the convenience of description, the two transmission wheel sets are respectively named as the first transmission wheel set 401 and the second transmission wheel set 402 .

[0069] When the driving wheel rotates, the driven wheel can be driven to rotate through the first transmi...

Embodiment 2

[0076] The coaxial setting of the driving wheel and the driven wheel in Embodiment 1 has the following problems:

[0077] 1. It is impossible to realize zero speed change of line speed (zero speed change of line speed means that the line speed of the driving wheel and the driven wheel are the same).

[0078] 2. When the radius of the inner ring of the driving wheel is larger than the radius of the inner ring of the driven wheel, only linear speed deceleration can be realized; when the radius of the inner ring of the driving wheel is smaller than that of the driven wheel, only linear speed can be increased.

[0079] 3. In practical applications, the radius of the inner ring of the driving wheel and the driven wheel is limited, so that the change of the radius ratio of the driving wheel set is also limited, and the speed change range is greatly reduced.

[0080] 4. If it is a gear transmission, there are corresponding values ​​for the size of the teeth and the modulus, plus L is...

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PUM

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Abstract

The invention provides a bicycle derailleur. The bicycle derailleur comprises a main wheel frame, a driving wheel, a driven wheel and at least two transmission wheel sets. The driving wheel and the driven wheel are located on the two sides of the main wheel frame respectively, and a rotary shaft of the driving wheel is parallel to or coincident with a rotary shaft of the driven wheel; each transmission wheel set comprises two transmission wheels which are coaxial and capable of synchronously rotating relative to the main wheel frame, wherein rotary shafts of the two transmission wheels are parallel to the rotary shaft of the driving wheel; the transmission wheel sets are rotationally arranged on transmission wheel frames which are in sliding connection with the main wheel frame, the transmission wheel frames are fixedly connected with pull lines, and elastic reset components are arranged between the main wheel frame and the transmission wheel frames; the driving wheel and the driven wheel are provided with internal rings respectively, and the internal rings are used for transmission fit with the two transmission wheels of each transmission wheel set respectively; under the condition of the same revolving speed of the driving wheel, the revolving speeds which are transmitted to the driven wheel from the transmission wheel sets are different. The bicycle derailleur can provide aspeed varying function for a shared bicycle, and meanwhile, the bicycle derailleur is suitable for the shared bicycle of a chain transmission structure and the shared bicycle of a shaft transmission structure.

Description

technical field [0001] The invention relates to the technical field of bicycle transmissions, in particular to a bicycle transmission. Background technique [0002] At present, there are two kinds of shared bicycles on the market, one adopts a traditional chain transmission structure, and the other adopts a shaft transmission structure. At present, these two shared bicycles do not have a variable speed function, and cannot adapt to the needs of different groups of people and different roads. [0003] Also there is not a kind of bicycle transmission designed for two kinds of shared bicycles on the market now. Contents of the invention [0004] Aiming at the technical problems in the above-mentioned prior art, the present invention provides a bicycle transmission, which can provide a speed change function for shared bicycles, and is applicable to both shared bicycles with chain drive structure and shaft drive structure. [0005] The technical solution of the present invent...

Claims

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Application Information

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IPC IPC(8): B62M11/04B62K23/00
Inventor 黄金翊黄锋
Owner 黄锋