Bicycle double front wheel drive device

Abstract

The invention relates to a dual front wheel driving device for a bicycle. The dual front wheel driving device comprises a left-front wheel mechanism, a right-front wheel mechanism, a left-front wheel driving device and a right-front wheel driving device, wherein the left-front wheel driving device is connected with the right-front wheel driving device through an intermediate shaft sleeve; the left-front wheel driving device comprises a left treading crank and a left driving shaft; a planetary transmission is arranged on the left driving shaft; the left treading crank comprises a left treading shaft, a first crank and a second crank; a first spline is arranged at the free tail end of the first crank; a second spline matched with the first spline is arranged at one end of the left driving shaft; a third spline matched with the first spline is arranged at one end of a planet frame; the structure of the right-front wheel driving device is identical with that of the left-front wheel driving device. According to the dual front wheel driving device for the bicycle, disclosed by the invention, the structure is compact, the convenience in mounting is realized, and variable speed and differential speed can be realized.

Description

【Technical field】

[0001] The invention relates to the field of bicycles, in particular to a bicycle double front wheel drive device. 【Background technique】

[0002] At present, the bicycles on the market are mainly two-wheeled bicycles. With the development of the tourism and leisure industry, four-wheeled bicycles are also used more and more. Four-wheeled bicycles can not only allow more people to exercise, exercise, relax and travel together. It is more due to the increase of people's awareness of environmental protection and the mentality of advocating nature. A four-wheeled bicycle is mainly composed of a vehicle frame, a vehicle seat, wheels, pedals, a driving device, a steering component, and a brake component. The four-wheeled bicycle driving device in the prior art is generally a double rear-wheel drive mechanism. The disadvantages of the driving mechanism are: 1. The structure is relatively lengthy and not compact enough; 2. It is impossible to realize variable spe...

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