Bicycle with adjustable distance between handle bar and saddle

Abstract

The invention discloses a bicycle with an adjustable distance between a handle bar and a saddle. The bicycle comprises a front wheel, a rear wheel, a front fort, a rear fork, a handle frame, a frame, a saddle, a drive mechanism and an adjusting and positioning mechanism for adjusting the distance between the handle bar and the saddle. The adjusting and positioning mechanism mainly consists of a support sleeve, a rotary connecting piece and a length adjusting mechanism. The upper part of the support sleeve is sleeved at the lower part of the handlebar stem and is connected with the handlebar stem in a way of rotating relative to the handlebar stem circumferentially. The lower part of the support sleeve is hinged synchronously with a front vertical tube. The rotary connecting piece is a member which is bendable axially and can rotate relative to the handlebar stem circumferentially. The rotary connecting piece is located in the support sleeve. The upper end of the rotary connecting piece is fixedly connected with the handlebar stem, and the lower end of the handlebar stem is fixedly connected with the upper end extending from the front vertical tube. The front fork rotates synchronously and circumferentially with the handlebar stem through the rotary connecting piece. According to the bicycle, the distance between the handle bar and the saddle can be adjusted so as to improve the riding comfort.

Description

technical field [0001] The invention relates to a bicycle, in particular to a bicycle with an adjustable distance between a handle bar and a vehicle seat. Background technique [0002] Bicycle is an energy-saving and environment-friendly means of transportation. It used to be one of the main means of transportation in urban and rural areas of our country. At present, with the development of economy and technology, four-wheel motor vehicles and rail transit have already become the main means of transportation for people to go out in the city. Start getting people's favor. Existing bicycles are generally divided into foldable bicycles or non-foldable bicycles, which include front wheels, rear wheels, front forks, rear forks, handle frames, vehicle frames, vehicle seats and driving devices for driving wheels. Mechanisms mainly include pedal drive and electric drive, the latter is called electric bicycle. Existing handle frame is generally mainly made of cross tube and stand ...

AI Technical Summary

Problems solved by technology

[0003] In existing bicycles and electric bicycles, whether it is a foldable bicycle or a non-foldable bicycle, the distance between the seat and the handle bar is fixed and cannot be adjusted arbitrarily, especially if the frame is an inverted triangle structure. The bicycle corresponding to the distance is more fixed, so it is difficult to adapt to the needs of taller or shorter riders who need to increase or shorten the distance, resulting in these riders not being able to connect the seat and the handlebars. The distance between the tubes is adjusted for a comfortable riding position

If the distance between the seat and the handle bar is too large, the rider needs to extend his arms, bend down, and raise his head when riding, which will cause the rider's cervical and lumbar spine to be under pressure for a long time, which will easily cause damage to the body; If the distance between the seat and the handle bar is too small, it will be difficult for the rider to stretch his hands and feet, which will cause inappropriate distribution of force on the three fulcrums of the seat, pedals, and handlebars, which will not only make turning inconvenient, but also reduce the safety of cycling; It will also make the cyclist's perineum bear more force, which will easily lead to the blockage of blood flow around the perineum. If things go on like this, it may cause male cyclists to suffer from prostatitis or even infertility, thus affecting the health of the cyclist

Images