Labor-saving bicycle

Abstract

The invention provides a labor-saving bicycle, and belongs to the technical field of bicycles. The labor-saving bicycle solves the problem that the existing bicycle has poor structural stability. The labor-saving bicycle comprises a frame and a driving wheel, wherein crank discs are connected to two sides of the frame respectively; pedals are connected to the side parts of the crank discs; the labor-saving bicycle further comprises a driving wheel rotationally fixed on the frame and two transmission rods which are arranged on two sides of the frame respectively and are in a long rod shape; one ends of the two transmission rods are connected with the driving wheel; the other ends of the two transmission rods are movably connected to the eccentric positions of two crank discs respectively; the two transmission rods can alternately swing back and forth around the driving wheel when the crank discs rotate in the circumferential direction; a one-way transmission structure is arranged between the driving wheel and the two transmission rods; and the rotation of the driving wheel can be driven by a chain or a belt to rotate the driving wheel. The labor-saving bicycle has the advantage of good stability of the transmission structure.

Description

technical field [0001] The invention belongs to the technical field of bicycles and relates to a labor-saving bicycle. Background technique [0002] With the continuous increase of the number of automobiles, the pollution caused by the tail gas emitted by automobiles is also becoming more and more serious. Simultaneously, the parking space is also increasingly tight, and it is difficult to meet the increasing demand of automobiles. Because of its economy, convenience, flexibility, pollution-free and docking freedom, bicycles begin to receive people's attention constantly, and bicycles will inevitably become an indispensable means of transportation in people's daily life. Yet present bicycle only cooperates simple sprocket chain structure to drive wheel forward by traditional foot pedal, once run into the road condition that needs bigger driving force such as steep slope, will cause bigger inconvenience to people's travel. [0003] For this reason, people have designed a ki...

AI Technical Summary

Problems solved by technology

However, when the above-mentioned double crank connecting rod reciprocating bicycle is in use, the user's feet are required to step on the end of the lever up and down in the vertical direction, and the user applies an instantaneous force to the end of the longer end of the lever for a long time, which is very easy to cause the lever to Injuries caused by bending or even breaking, and the pedaling end of the lever is not fixed, the hinge point will become loose after long-term use, so that the unconnected end of the lever can swing freely in the horizontal direction, and there is a problem of poor structural stability

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