Pedal gear transmission tricycle

Abstract

A pedal gear transmission tricycle comprises a body, handlebars, a front wheel, rear wheels and a seat; a center shaft of the two rear wheels is connected with a differential mechanism; two transmission gears are arranged on the bilateral sides of the differential mechanism respectively; the transmission gears are connected with the differential mechanism through nullable ratchet wheels; each transmission gear is meshed with and matched with a large gear; the two large gears are fixedly connected with pedals which are located on the bilateral sides of the body respectively and used for driving the large gears to rotate in a reciprocating mode. According to the pedal gear transmission tricycle, the driving can be labor-saving, the transmission is reliable, and the turning can be flexible due to the differential mechanism; the reciprocating motion pedal driving mode can be possible due to a ratchet wheel mechanism and the internal meshing combination structure; compared with the pedal mode in the prior art, the working of the mechanism is located in the state that a human body is easy to exert force and accordingly the driving efficiency is improved.

Description

technical field [0001] The invention relates to a three-wheeled bicycle, in particular to a three-wheeled bicycle with pedal gear transmission. Background technique [0002] Tricycle is a kind of important, environment-friendly transportation, shopping, body-building, leisure tool to the vast middle and old people whose balance ability is weakened year by year. But existing three-wheeled bicycle is not widely used because of having some defects. These defectives are: 1, the three-wheeled bicycle of two-wheel front one-round rear position easily surpasses the triangular region formed by three-wheel landing sites because of the rider's center of gravity and overturns. If two front-wheel distances are widened or the front and rear wheel distances are lengthened, although the above-mentioned defects can be improved to some extent, the vehicle body is huge and difficult to store. 2. A bicycle with one front wheel and two rear wheels can be divided into front-wheel drive and rea...

AI Technical Summary

Problems solved by technology

These defectives are: 1, the three-wheeled bicycle of two-wheel front and one rear is easy to exceed the triangular region formed by three-wheel landing sites because of the rider's center of gravity and overturns

The front-wheel drive will cause difficulty in pedaling when turning sharp or large bends; the rear-wheel drive is currently widely used in chain transmission, which has low transmission efficiency, poor transmission balance and reliability (there is a chain drop), and most vehicles are There is no differential, resulting in inflexible turning, poor driving performance, and it is difficult to adapt to the physical strength and road conditions of different middle-aged and elderly people, which brings inconvenience to the use of middle-aged and elderly people

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