Speed ​​change method of bicycle automatic speed change

An automatic transmission and bicycle technology, applied in bicycle gear transmission mechanism, bicycle accessories, transportation and packaging, etc., can solve problems such as unsmooth riding, potential safety hazards for riders, chain breakage, etc., to achieve smooth riding, Elimination of the risk of being pulled out, the effect of a good riding experience

Active Publication Date: 2019-12-13
SHENZHEN QISHANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there is a shortcoming of the automatic transmission bicycles on the market in the process of automatic transmission during riding, that is, the chain cannot bear force during the transmission process, otherwise the chain may be broken, and there is obvious stepping, and the foot will slip If the pedal is out, the riding feeling is not smooth, and it may bring safety hazards to the rider

Method used

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  • Speed ​​change method of bicycle automatic speed change
  • Speed ​​change method of bicycle automatic speed change

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Embodiment Construction

[0012] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0013] The invention discloses a speed change method for bicycle automatic speed change, such as figure 1 As shown, during the riding process, the pedal drives the crankset to make a circular motion through the crank. At any position during the riding process, only one foot is exerting force, and the central axis connects the two cranks. The pedaling force The largest position range occurs when the crank is in the range from 1 o'clock to 5 o'clock on the center axis, and it is also the range where the crank torque is the largest, while the crank is in the direction from 5 o'clock to 7 o'clock on the center axis The torque received within the range is "zero" or approximately "zero", so when the torque on the crank connected to the pedal is "zero" or approximately "zero", the shift is completed, that is, two crank positions The gears are shifted b...

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PUM

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Abstract

A speed change method for automatically changing bicycle speed, comprising the following steps: when torque applied on a crank which is connected to a foot pedal is "zero" or approximately "zero", completing gear shifting. Said speed change method for automatically changing bicycle speed completes gear shifting when the torque applied on the crank which is connected to the foot pedal is "zero" or approximately "zero" by means of controlling the timing of completing gear shifting; in such a state, force is not applied to a chain or the force is approximately zero, thus eliminating the risk of breaking the chain, while the obvious missing of a step will not occur, feet will not slide out of foot pedals, and riding feel is smooth so as to bring a good riding experience to a bicycle rider.

Description

technical field [0001] The invention relates to a speed-changing bicycle, in particular to a speed-changing method for automatic speed-changing of a bicycle. Background technique [0002] At present, there is a shortcoming of the automatic transmission bicycles on the market in the process of automatic transmission during riding, that is, the chain cannot bear force during the transmission process, otherwise the chain may be broken, and there is obvious stepping, and the foot will slip If the pedal is out, the riding feeling is not smooth, and it may bring safety hazards to the rider. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a speed change method for automatic speed change of a bicycle in view of the deficiencies in the prior art. [0004] In order to solve the above technical problems, the present invention adopts the following technical solutions. [0005] A speed change method for automatic speed chan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62M25/02
CPCB62M25/02
Inventor 陈昊张在夫
Owner SHENZHEN QISHANG TECH
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