Bicycle speed changing system with function of preventing frequent gear shifting

Abstract

The invention discloses a bicycle speed changing system with a function of preventing frequent gear shifting. The bicycle speed changing system comprises a power module, a microcomputer, a gear shifting driver and a manual shifting controller; the microcomputer is electrically connected to the power module, and an automatic gear shifting mode and a manual switching mode can be switched over by a rider via the microcomputer; the gear shifting controller is electrically connected with the microcomputer, is physically connected with a transmission and is controlled by the microcomputer to drive the transmission to change the speed of a bicycle; the manual shifting controller is electrically connected with the microcomputer; the microcomputer is provided with automatic gear shifting logic and can judge automatic gear shifting timing to perform gear shifting according to the automatic gear shifting logic; and the microcomputer is further provided with gear shifting delay logic, and the gear shifting delay logic includes that gear shifting is delayed by a delay time interval according to a gear shifting condition after a gear shifting instruction is generated, and all other gear shifting instructions are eliminated in the delay interval.

Description

technical field [0001] The present invention relates to the transmission system of the bicycle, in particular to a bicycle transmission system with the function of avoiding frequent shifting. Background technique [0002] Existing bicycles with automatic shifting function usually put a shift logic in their microcomputer. When the shift condition of the shift logic is reached, for example, when the vehicle speed reaches a predetermined speed, the microcomputer controls the corresponding transmission to shift gears. When the rider is pedaling, the gear ratio will be changed by the shifting action, so that the rider will feel that the pedaling load and pedaling frequency have changed. [0003] However, in the process of riding a bicycle, its state is not static. Sometimes it must stop when it encounters a red light on the road, sometimes it encounters an uphill, and sometimes it encounters a downhill, and the speed of the bicycle will vary and change rapidly. In the case of a ...

AI Technical Summary

Problems solved by technology

[0005] However, the foregoing method has its disadvantages. In the automatic transmission mode, sometimes the rider only wants to perform manual transmission for a short time. It is inconvenient to switch to the manual gear shifting mode first, but not directly operate the gear shifting in the automatic gear shifting mode

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