Device and method for driving crank of bicycle to perform vertical reciprocating swing

Abstract

The invention discloses a device and method for driving a crank of a bicycle to perform vertical reciprocating swing. The device comprises a single-directional thrust ball bearing, deep groove ball bearings, a front bevel gear, left and right rolling bearings, left and right bevel gears, a middle shaft and other parts. Two rows of front chain wheels are fixed to the middle shaft, and a left one-way clutch and a right one-way clutch are connected with two ends of the middle shaft through keys. One end of the left bevel gear and one end of the right bevel gear are connected with the left one-way clutch and the right one-way clutch respectively through keys, are put on the left rolling bearing and the right rolling bearing respectively and then are fixed to a box body through a left bearing seat and a right bearing seat. The left bevel gear and the right bevel gear are respectively meshed with the front bevel gear. Two ends of the middle shaft are put in shaft holes of the left bevel gear and the right bevel gear through the deep groove ball bearings. When the bicycle is ridden, a normal walking posture of a human body is simulated and conforms to the physiological habits of the human body, and the 'dead point' phenomenon occurred in the riding process of a traditional bicycle is avoided.

Description

technical field [0001] The invention relates to a driving mechanism for riding a bicycle, in particular to a crank up and down reciprocating swing driving device and method for a bicycle. Background technique [0002] Bicycle is one of the means of transportation that people like, and it is also a way for people to have fun and exercise. In recent years, people's growing demand for a leisurely and healthy life experience has prompted the design of bicycles to fully consider the factors of the human body, and at the same time fully consider the characteristics of use by different groups of people and occasions, so that the design of bicycles is moving towards "occupation of less space". , flexible and convenient, comfortable and durable" and other characteristics continue to develop. [0003] The drive mechanism that bicycle adopts now is to connect two pedals and crank by axis. In the process of applying force, the soles of the feet drive the crank to rotate through the fo...

AI Technical Summary

Problems solved by technology

At this time, since the position of the bicycle saddle relative to the crank is constant, it is difficult to apply a tangential force to drive the bicycle forward.

For this reason, the rider either bends his body and bends his legs, or moves his body back a little distance, so that the soles of the feet deviate from a certain angle to the pedals to generate a horizontal component of force. Riders are prone to fatigue due to functional requirements

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