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Positive-negative driving multifunctional automatic gearbox of bicycle

An automatic transmission and bicycle technology, which is applied in vehicle gearboxes, vehicle parts, chain/belt transmissions, etc., can solve the problems of complex transmission mechanism and wired control mechanism, inconvenient manual control, and large space occupation, and achieve simple transmission Fast, simple and beautiful appearance, simple structure effect

Inactive Publication Date: 2015-06-03
张刚
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the transmissions widely used in bicycles are wired manual control transmissions that change the position of the chain and the large and small sprockets. The disadvantage of this transmission is that the transmission mechanism and the wired control mechanism are complex, easy to damage, and large in size. The speed change requires manual control. Inconvenient, the chain is exposed, takes up a lot of space, and is easy to pollute the clothes

Method used

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  • Positive-negative driving multifunctional automatic gearbox of bicycle
  • Positive-negative driving multifunctional automatic gearbox of bicycle

Examples

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Embodiment Construction

[0016] exist figure 1 In the schematic cross-sectional view of the forward and reverse drive multifunctional automatic transmission of a bicycle shown, the direction of the front wheel of the bicycle is set as the front end, the front end of the central axis support 1 of an ordinary bicycle is the bicycle front beam 2, and the rear end is the rear wheel fork frame 3, The left and right bearing rack bowls 4 are arranged in the threaded openings of the left and right ends of the central axis bracket, and the center shaft 5 is arranged in the rack bowl. The left and right bearing racks are formed on the central shaft, and there The left and right flower basket steel balls 6, the left end of the left bearing rack bowl is provided with a fastening nut ring 7, the right end of the right bearing rack bowl is provided with a table ring 8, and the periphery of the table ring is formed with two parallel tables for wrench fastening, and the right end of the table ring is provided with Co...

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Abstract

A positive-negative driving multifunctional automatic gearbox of a bicycle is composed of a combination type coaxial gear disc, a function conversion gear clutch and a function conversion clutch rotating handle. The combination type coaxial gear disc is formed by an outer gear ring, an inner gear ring and a chain gear ring and is integrated with a right pedal crank arm. The function conversion gear clutch and a control drawing wire are arranged at the left end of a disc type chain cover support, and the function conversion clutch rotating handle is arranged on the inner side of a left handle of the bicycle. The gearbox is in a high speed gear in the positive pedal driving process and is in a low speed gear in the negative pedal driving process, no gear exists in the high speed and low speed gear shifting process, and the functions of positive pedal driving and negative loose running of a common bicycle are retained. Further, gears can be shifted at will in the running or parking state of the bicycle, and negative pedal driving is used for low speed gear running under dead wind condition and uphill condition. The gearbox is light, safe and favorable for body building, effectively reduces fatigue caused by long time positive high speed driving, and is interesting.

Description

Technical field: [0001] The invention relates to a bicycle speed change device, in particular to a multifunctional automatic speed changer capable of forward and reverse pedal driving for bicycles. Background technique: [0002] At present, most of the transmissions widely used in bicycles are wired manual control transmissions that change the position of the chain and the large and small sprockets. The disadvantage of this transmission is that the transmission mechanism and the wired control mechanism are complex, easy to damage, and large in size. The speed change requires manual control. It is inconvenient, the chain is exposed, it takes up a lot of space, and it is easy to pollute the clothes. Invention content: [0003] Therefore, people have a great demand for new bicycle transmissions. The invention discloses a bicycle forward and reverse drive multifunctional automatic transmission that can be installed on the central axis brackets of various bicycles, electric bic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62M9/04
Inventor 朱幕松
Owner 张刚
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