A wire-controlled electronically controlled double-shift bicycle central axle gearbox

Abstract

The invention discloses a bicycle intermediate shaft gearbox with line control and electric control double gear shifting manners. The gearbox comprises a box body and a drive motor. An intermediate shaft and a driven shaft are arranged in the box body. The intermediate shaft is provided with driving gears at the corresponding gears, and the driven shaft is provided with driven gears at the corresponding gears. In the use process, a user can conduct operation and control through a control panel to increase and decrease the gear, the drive motor drives a corresponding separation board, so that the driving gear or the driven gear at the corresponding gear is disengaged from or engaged with a corresponding clutch sleeve, and electric control gear shifting speed change at the corresponding gear is achieved. A pull wire also can be pulled to make a shifting rod drive the corresponding separation board to swing so as to control the corresponding driving gear or the corresponding driven gear to be disengaged from or engaged with the corresponding clutch sleeve, so that line control gear shifting is achieved. The bicycle intermediate shaft gearbox is simple in structure, low in cost, wide in speed change range and capable of quickly and conveniently achieving speed change adjustment, the force needed for driving the corresponding separation board is quite small, and the drive motor can easily push the corresponding separation board to achieve accurate speed change; and in addition, the gearbox is more stable in performance, lower in fault rate and quite high in practicality.

Description

Technical field [0001] The invention relates to the field of bicycle speed changes, in particular to a bicycle central axle gearbox in a wire-controlled electronic control double-shift mode. Background technique [0002] Bicycles are an important means of transportation in people's lives. Especially in recent years, bicycle travel has become more and more popular due to its environmental protection and fitness advantages. However, ordinary bicycles have a relatively simple speed change device. Generally, the speed change is realized by the mating connection of a sprocket and a flywheel chainring with multiple numbers of teeth. The speed change range is relatively narrow, and the speed change device is externally attached to the bicycle, which is easy It is eroded by sand, wind and rain, and has a high failure rate; and some professional bicycles use planetary gears to achieve rear axle transmission. The speed range is relatively wide and the precision is relatively high, but its ...

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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