Bicycle center shaft gearbox with multi-gear shifting and electronically controlled double shifting mode

Abstract

The invention discloses a line control and electricity control double-gear-shifting-mode bicycle center shaft gearbox with a multi-gear speed change function. The line control and electricity control double-gear-shifting-mode bicycle axis gearbox comprises a box body and a driving motor, wherein a center shaft, a middle shaft and a driven shaft are arranged in the box body; a corresponding driving gear, a middle gear and the driven gear are respectively arranged on the center shaft, the middle shaft and the driven shaft. The line control and electricity control double-gear-shifting-mode bicycle center shaft gearbox has the advantages that two kinds of gear shifting modes including line control and electric control are realized; in addition, many gears can be set; the speed change range is wide; in addition, through the arrangement of the middle shaft, the appearance of the device is ingenious, the weight is light, and the use influence due to too large size is avoided. The use is simple; the cost is low; the speed change regulation is fast and convenient; in addition, one end of a separation plate is inserted and connected with the lower end of the box body; the other end of the separation plate extends out of the outer part of the upper end of the box body; force required for driving the separation plate is small; the driving motor can easily push the separation plate to realize the precise speed change; in addition, main transmission components are arranged in the box body; the erosion of sundries such as silt and rainwater is avoided; the performance is stable; the fault rate is low; the practicability is high.

Description

technical field [0001] The invention relates to the field of bicycle gear shifting, in particular to a bicycle center shaft gearbox with multi-gear gear shifting and electronically controlled double-shift mode bicycle. Background technique [0002] Bicycle is a kind of important means of transportation in people's life, especially in recent years, because adopting bicycle to travel has the advantage of environmental protection and fitness, bicycle travel is more and more subject to people's welcome. Yet common bicycle, its speed change device is relatively simple, generally realizes speed change by the cooperative connection of sprocket wheel and the flywheel chainring that has a plurality of different numbers of teeth, and its speed change range is relatively narrow, and its speed change device is hung outside the bicycle, easy Corroded by sand, wind and rain, the failure rate is high; while for some professional bicycles, the speed change of the rear axle is realized throu...

AI Technical Summary

Problems solved by technology

Yet common bicycle, its speed change device is relatively simple, generally realizes speed change by the cooperative connection of sprocket wheel and the flywheel chainring that has a plurality of different numbers of teeth, and its speed change range is relatively narrow, and its speed change device is hung outside the bicycle, easy Corroded by sand, wind and rain, the failure rate is high; while for some professional bicycles, the speed change of the rear axle is realized through planetary gears, the speed change range is relatively wide, and the precision is relatively high, but the cost is too high and it is not suitable for ordinary people.

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