Transmission system of bicycle

Abstract

The invention relates to a transmission system of a bike, which comprises that: a first transmission group is provided with a driving wheel, and a first transmission piece is connected with a driven wheel, thus ensuring that each driving wheel can synchronously rotate with the driven wheel; a second transmission group produces rotating action caused by the transmission of the first transmission group, and the second transmission group is provided with two first driven wheels coaxially pivoted at two sides of the driven wheel, and two second transmission pieces are respectively connected with two second driven wheels, thus ensuring the synchronous rotation of the first driven wheel and the second driven wheel; by using the elements, the first transmission group and the second transmission group are respectively arranged on the part of a bottom bracket and a rear wheel shaft of the bike, thus obtaining an excellent riding degree of balance and improving the trampling efficiency of the transmission system of the bike.

Description

technical field [0001] The invention relates to a transmission system, especially a drive used in a two-wheeled vehicle, which is symmetrically designed to achieve the symmetry of the balance force and improve the pedaling efficiency. Background technique [0002] The advancement of bicycle is mainly to step on pedal by manpower, please refer to Fig. 8, and its transmission system 60 is mainly made up of pedal 61, crank 62, sprocket wheel 63, chain 64 and flywheel 65; 61 drives the crank 62 to make a rotary motion, and the sprocket 63 is transmitted to the flywheel 65 of the rear axle through the chain 64 to drive the rear wheel 66 to rotate; each time the sprocket disc rotates 360°, the left and right feet are respectively responsible for the force angle of 180° Range, the distance that the wheel 66 turns over when this pedal is stepped on for a week is the stepping stroke. [0003] As far as the current bicycle transmission system is concerned, when the force is applied t...

AI Technical Summary

Problems solved by technology

However, when stepping on the left pedal, the left foot needs to exert a greater pedaling force to bear the weight added by the transmission system to the right. Therefore, after riding for about 5-10 kilometers, you will often start to have muscle soreness. Feeling, especially the left foot, so the pedal forces on the left and right sides are not equal, which also leads to different requirements for the balance torque of the bicycle on both sides

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