Sitting type light tricycle and its frame

Abstract

The present invention relates to one kind of light tricycle with seat and the tricycle is superior to available tricycle. The frame of the tricycle includes main tricycle frame comprising upper pipe, lower pipe, front pipe and back vertical pipe, and vertical handlebar sleeve installed in front, back or upper part of the front pipe. The tricycle has middle shaft sleeve mounted in the front part of the lower pipe and on back of the front wheel. The tricycle with the said frame has simple structure, small size, light weight and convenient packing and transportation, and is comfortable, stable, and safe. The tricycle may be manpower and / or electric power driven.

Description

【Technical field】 [0001] The invention relates to a tricycle and its vehicle frame, in particular to a tricycle with a seat and capable of sitting and driving and its vehicle frame. 【technical background】 [0002] Existing tricycles are all ridden, and the rider's whole body weight is pressed on the small triangular saddle, which makes them uncomfortable and prone to fatigue when riding, and may also cause pathological changes in certain parts of the body. At the same time, the riding method of the tricycle has greatly improved the center of gravity of the whole vehicle, which makes the tricycle easy to roll over during driving and cause accidents. [0003] ZL 88206280.8 discloses a seat-type three-wheeled bicycle. Although the invention can be seated and driven, the seat shifts too much to the rear end of the frame. Therefore, the wheelbase must be lengthened and the handlebar handle must be extended backward. , which will cause the vehicle body to be too long and greatly ...

AI Technical Summary

Problems solved by technology

[0002] Existing tricycles are used for riding, and the rider's whole body weight is pressed on the small triangular saddle, which makes them uncomfortable and prone to fatigue when riding, and may cause lesions in certain parts of the body

At the same time, the riding method of the tricycle greatly improves the center of gravity of the whole vehicle, which makes the tricycle easy to roll over and cause accidents during driving.

[0003] ZL 88206280.8 discloses a seat-type three-wheeled bicycle. Although the invention can be seated and driven, the seat shifts too much to the rear end of the frame. Therefore, the wheelbase must be lengthened and the handlebar handle must be extended backward. , which will cause the vehicle body to be too long and greatly reduce the flexibility of steering manipulation; patent CN 85107493A also discloses a sitting tricycle, which does not need to extend the handlebar handle, but the pedal parts are installed on the head tube, although the scheme can be The body is shortened, but the height of the seat must be raised, which will cause the center of gravity of the whole vehicle to be too high and reduce the safety of driving; foreign patent FR 2807729 discloses a tricycle with a seat, and the invention installs the pedal parts on the front wheels The upper side, and the lower end of the pedal part is sandwiched between the front wheels and is driven by the front wheels. This invention has a short body and a low seat, but the front wheels undertake the dual functions of steering and driving, which will inevitably cause inconvenience in pedaling when turning.

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