Variable speed control system of boosting bicycle

Abstract

The invention relates to a variable speed control system of a boosting bicycle. The variable speed control system is arranged on the boosting bicycle. The boosting bicycle is provided with a boosting providing system and a speed changer. The variable speed control system of the boosting bicycle comprises a microcomputer, a gear shifting control driver, and at least one sensor, wherein a plurality of variable speed condition tables are stored in the microcomputer; the boosting providing system provides at least two different boosting modes; the at least one sensor is used for sensing at least one of wheel speed, treading speed, treading power and gradient to obtain at least one sensing signal and obtain at least one sensing result; and the microcomputer is used for selecting one of the variable speed condition tables to compare the at least one sensing result so as to judge whether a gear is shifted up or down, and controlling the gear shifting control driver to send out a gear shifting control signal to the speed changer so as to enable the gear to be shifted up or down.

Description

technical field [0001] The present invention is related to bicycles, in particular to a speed change control system for power-assisted bicycles. Background technique [0002] Regarding power-assisted bicycles, Japanese Patent Laid-Open No. 2004-243920 discloses an electric assisted bicycle, which uses the pedaling force and the rotation speed of the driving wheel to determine whether to provide power assistance, so that the user can save more effort when pedaling the bicycle. . [0003] And the known automatic transmission system for bicycles, in Taiwan, China announced the No. 583117 "automatic transmission control device and method for bicycles" invention patent case, and the U.S. relative case is US6,774,771. It has been disclosed in the prior art that an automatic transmission capable of appropriately shifting gears according to the running state of the bicycle is a well-known transmission. [0004] The above-mentioned prior art only discloses that the signal measured ...

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Problems solved by technology

[0004] The above-mentioned prior art only discloses that the signal measured by the sensor (Sensor) is converted into a value, and then compared with the gear value of each gear to determine whether to change gears, but due to the changing riding conditions, Factors such as uphill and downhill and pedaling action will cause the shifting action to appear abrupt or clumsy. The above-mentioned prior art cannot solve this problem, so the rider is likely to feel uncomfortable

And if the above-mentioned prior art (notice No. 583117 patent) is combined with the power-assisted bicycle, then there will be more power-assisted factors in addition to the rider's pedaling force, so the automatic shifting action will be different from the rider's needs. Bigger and more uncomfortable for the rider

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