Automatic variable-speed type multifunction health-care bicycle with forward and reverse driving

Abstract

The invention relates to an automatic variable-speed type multifunction health-care bicycle with forward and reverse driving. A front beam of a general frame is short, a fork frame of a triangular back wheel is long, a bracket of a middle axle is positioned in the slight front of the lower end of the general frame, and a backrest type bicycle saddle can be adjusted back and forth as well as up and down. The legs of a rider extend forwards, the body of the rider extends backwards, and the counteraction force of the force of the legs and feet is applied to the rear backrest of the bicycle saddle, so the obvious labor-saving effect is realized, and the good health-care function on the body of the rider is realized. An automatic variable-speed device with forward and reverse driving is a simple variable-speed device which is integrally made of a coaxial gear disc and a right pedal crank arm, wherein the coaxial gear disc consists of an outer gear ring, an inner gear ring and a chain gear ring. The forward pedal driving is in a high-speed shift, the reverse pedal driving is in a low-speed shift, the switching of high speed and low speed is quick, a neutral shift is saved, a clutch rotary handle is manually switched, the traditional functions of the forward pedal driving and the reverse idling of a common bicycle can be switched, the reverse treading driving is used for low-speed shift driving during upwind and slope climbing, the driving is easy and safe, the fatigue caused by long-time forward high-speed driving can be reduced, the leisure and body building effects are realized, and the interesting is realized.

Description

Technical field: [0001] The invention relates to a bicycle, in general, it is a multifunctional health-care bicycle with positive and negative driving and automatic variable speed. Background technique: [0002] Its overall structure of the bicycles on the market basically keeps the traditional technical characteristics, and its disadvantages are: 1. When a person is riding, because the reaction force of the legs and feet is to rely on their own gravity, the force is limited by gravity, so not only can they not use Powerful and laborious. 2. When a person is riding, the body leans forward, and the big nose at the front end of the triangular saddle presses the crotch of the person, which is likely to cause damage to the urinary system of the human body. 3. There is a healthcare bicycle on the market, but its drive and steering are on the front wheels, the steering and drive affect each other, and the steering is not flexible and the drive is uncomfortable. 4. Existing ordin...

AI Technical Summary

Problems solved by technology

[0002] Its overall structure of the bicycles on the market basically keeps the traditional technical characteristics, and its disadvantages are: 1. When a person is riding, because the reaction force of the legs and feet is to rely on their own gravity, the force is limited by gravity, so not only can they not use Work hard and work hard

2. When a person is riding, the body leans forward, and the big nose at the front of the triangle seat presses the crotch of the person, which is likely to cause damage to the human urinary system

3. There is a health bicycle on the market, but its driving and steering are on the front wheel, the steering and driving influence each other, the steering is not flexible and the driving is uncomfortable

4. Existing ordinary bicycles do not have a speed change function, and it is very difficult when driving uphill or against the wind

5. Bicycles with transmissions are mostly wired manual-controlled transmissions that change the position of the chain and the large and small sprockets. The disadvantage of this type of transmission is that the transmission mechanism and the wired control mechanism are complex, easy to damage, and large in size. The speed change requires manual control. Inconvenient, the chain is exposed, takes up a lot of space, and is easy to pollute the clothes

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