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Automatic stepless transmission for bicycle

An automatic transmission and bicycle technology, which is applied to vehicle gearboxes, bicycle brakes, vehicle components, etc., can solve the problems of rider distraction, high cost, and laborious manual methods, and achieve simple and labor-saving operation, safe and reliable shifting, Eliminates the effect of the chain falling off

Inactive Publication Date: 2005-11-23
高士博
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The cyclist must manually shift gears, which will cause the cyclist to be distracted during the ride and cause accidents
[0006] 2. The manual way of shifting gears is relatively laborious, and it is not easy to shift to the best gear at one time, which increases the trouble of repeated adjustments
[0007] 3. The transmission is easy to cause off-chain during the shifting process
[0008] 4. The transmission is large in size, heavy in weight and high in cost

Method used

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  • Automatic stepless transmission for bicycle
  • Automatic stepless transmission for bicycle
  • Automatic stepless transmission for bicycle

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Embodiment Construction

[0018] The present invention will now be described in further detail in conjunction with specific embodiments and accompanying drawings.

[0019] See first figure 1 and figure 2 The structure diagram of the present invention shows that the continuously variable automatic transmission 100 for a bicycle includes a wheel disc 110 , a planetary gear set 120 and a brake 130 . The cross-sectional shape of the wheel 110 is "匚" type, and its outer edge has a plurality of heat dissipation ribs 111 extending outwards to increase the heat dissipation effect. The wheel 110 is coaxially arranged on the wheel axle of the rear wheel of the bicycle. 11 on. The planetary gear set 120 is arranged in the concave cavity of the wheel disc 110, which includes a planetary gear carrier 121, a plurality of planetary gears 122, a sun gear 123 and a ring wheel 124; the planetary gear carrier 121 is axially arranged on On the rear wheel shaft 11 of the above-mentioned bicycle, a sprocket 140 coaxial ...

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PUM

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Abstract

This invention discloses a bicycle stepless automatic gear transmission, which uses the planetary gear as the main structure, including the pallet whose axis sets on the trailing wheel axis of bicycle, the planetary gear suit setting in the pallet and the braking device fixing on the frame; the chain wheel fixing on the planetary gear frame is the driving wheel, the sun gear fixing on the trailing wheel coaxially is the passiveness wheel, the braking device acts on the planetary gear suit by the adjustable designed friction braking force, when the drag is different caused by the change of the road situation, the ring wheel will produce different rotate speed along with it, thus it can change the gear ratio of the whole gear transmission automatically and steplessly, which can make driver in comfortable situation on any road situation.

Description

Technical field: [0001] The invention relates to a bicycle accessory, in particular to a continuously variable automatic transmission for a bicycle. Background technique: [0002] Bicycle is people's commonly used walking-replacing tool and leisure fitness apparatus. In order to adapt to different road conditions and environments, the cyclist must change his pedaling force from time to time to achieve different speeds. The bicycle transmission can enable the cyclist to change the speed of the bicycle to adapt to different road conditions and environments while maintaining basically the same pedaling force. Suitable riding condition. [0003] General common bicycle speed changer is a kind of shifting chain type external speed changer, and its market share is almost up to 90%. The transmission system of this shifting chain type external transmission includes pedals, cranks, front sprockets, rear sprockets, chains and front and rear shift levers. The rider changes the distan...

Claims

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Application Information

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IPC IPC(8): B62M11/14
Inventor 高士博
Owner 高士博
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