Light tricycle and its frame

Abstract

This invention involves a kind of light tricycle and its frame. This tricycle includes the main frame which consists of upper tube, lower tube, front tube and back erect tube, and the backshaft connecting device which is installed in back end of the main frame. The backshaft connecting device includes an oriented shelf, joining slice assembly and a standing cross or absorber. This light tricycle is of simple structure, small size and less weight and it is easily made and packed and transported. This light tricycle built by the frame, light and small, is rare to turn over, safe and steady to run, comfortable to take and reliable to brake . This invention has a wide range of use, it can be a general walk-replacing tool by adopting manpower drive, it can also develop into a bassinet , recreation car , fitness car , travel car, tourist coach , delivery car ,etc. If it is installed the battery, motor or internal-combustion engine, it can also be changed into a light electronic tricycle,a light assistant tricycle, a light tri-motor vehicle and a car for the disabled, etc.

Description

【Technical field】 [0001] The invention relates to a tricycle and its frame, in particular to a small and light tricycle and its frame. 【technical background】 [0002] When a tricycle travels slowly on a straight road, its stability and safety are better than bicycles, so tricycles are widely used in baby carriages, and are still a common means of transport in some small and medium-sized cities and rural areas. However, the existing tricycle frame structure is complex, the "body shape" is too large, the body is heavy, and the body is easy to roll over when driving on uneven roads and turning quickly. Today, when road resources are scarce, traffic is increasingly crowded, and people's safety awareness is increasing. Tricycles are of course "blocked" in some large and medium-sized cities. [0003] As the closest comparison document of the present invention, the Chinese patent document No. 90212599.0 discloses an improved bicycle frame, which is said to be both a bicycle frame ...

AI Technical Summary

Problems solved by technology

But because its rear axle is the dead axle that is used for assembling, as adopting rear-wheel drive and installing braking device must add complicated transmission part and positioning part, and front-wheel drive is impossible again in fact, so this invention is difficult to implement, more Impossible to solve the rollover problem

The Chinese patent documents No. 98227086.0 and 88201411.0 each disclose a rollover-preventing tricycle. Although this invention can solve the rollover problem to a certain extent, it does not solve the problem of the complicated structure of the ordinary tricycle frame, the large "body shape", The body is bulky, difficult to pack and transport, etc.

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