Tandem bicycle

Abstract

The present invention relates to a tandem bicycle having a front wheel and a rear wheel, a main frame which separates the front wheel and the rear wheel, and a pair of saddles supported by the main frame. The present invention is characterized in that the invention comprises: a main rotational shaft provided in such a way as to be able to rotate on the main frame; a pair of main pedals for making the main rotational shaft rotate; a rear-wheel shaft which is provided in such a way as to be able to rotate on the main frame, and which has the rear wheel mounted on it; a main power-transmission part for transmitting, to the rear-wheel shaft, a rotational force generated at the main rotational shaft; an auxiliary rotational shaft which is positioned between the main rotational shaft and the rear-wheel shaft, and which is provided in such a way as to be able to rotate on the main frame; a pair of auxiliary pedals for making the auxiliary rotational shaft rotate; an auxiliary drive sprocket located on the auxiliary rotational shaft; an auxiliary driven sprocket located on the rear-wheel shaft; an auxiliary chain for transmitting power, which links the auxiliary drive sprocket and the auxiliary driven sprocket with each other; and a one-way clutch which is provided between the auxiliary driven sprocket and the rear-wheel shaft, and which imposes a break in such a way that rotational force from the rear-wheel shaft is not transmitted to the auxiliary driven sprocket. In this way, not only can the machine move as a rider sitting at the rear rotates the pedals as they themselves desire, but also the enjoyment to be had from riding on a bicycle can be multiplied. Additionally, two riders can sit back to back, and can move safely while ascertaining conditions to front and rear.

Description

technical field [0001] The present invention relates to a tandem bicycle, and more specifically, to a tandem bicycle in which two riders drive the rear wheels independently to drive the bicycle. Background technique [0002] Due to the development of civilization, the amount of exercise of modern people is very small compared to the amount of food they eat, so the number of obese people has increased rapidly, and we live in an era where the importance of health due to adult diseases has become a topic. [0003] The main cause of adult diseases is obesity, and various weight loss products have appeared to reduce body fat, but they are not professionally developed, so the weight loss effect is far from expected. [0004] In order to lose weight in the abdomen, various electric belts using electricity are used, but when standing or sitting, giving vibration to a part of the body cannot break down body fat. Just feel comfortable at the moment of using the belt, but not meet the...

AI Technical Summary

Problems solved by technology

[0011] In conventional tandem bicycles, both of them ride forward, and the rider sitting at the back only looks at the back of the person in front, so it is difficult to look forward. Compared with ordinary bicycles, the entire length of the bicycle is long, making it difficult to observe rear, thus making the rider uneasy and dangerous

[0012] Therefore, using conventional tandem bicycles to drive on ordinary roads is always accompanied by danger, so almost no one buys tandem bicycles without practical use, and only borrows money for temporary fun in parks and other safe outdoors.

[0013] Moreover, in conventional tandem bicycles, when the bicycle is running, the rider behind cannot independently drive the rear wheel and rotate the pedals regardless of his intention. interest of

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