Foldable all-terrain bicycle

Abstract

The invention discloses a foldable all-terrain bicycle including a frame, wheels mounted on the frame, a seat, a handle, pedals, a wheel drive transmission system, and a wheel differential system, theframe includes a frame rail, a frame rail and a wheel support frame, and the frame rail, the frame rail, the frame rail and the wheel support are connected by a frame hinge. The handle and a seat aremount on that cross bar of the frame, a wheel comprises a hub, a tire plate unit and a tire drive shaft, the wheel drive transmission system comprises a center drive mechanism, a front wheel drive mechanism and a rear wheel drive mechanism, a wheel differential system comprises a differential and a differential locking mechanism, and a differential comprises a differential housing, a differentialdrive shaft, a differential drive shaft and a drive gear set. The invention is convenient to disassemble, assemble and fold, convenient to travel and carry, stable to ride, good in shock absorbing effect, capable of passing through various bad road conditions and switching between different road conditions, good in safety and reliability, and wide in application range.

Description

technical field [0001] The invention relates to a functional bicycle, in particular to a foldable all-terrain bicycle. Background technique [0002] All-terrain bicycles refer to special-purpose bicycles that can be arbitrarily switched between paved roads, rocky mountain roads, water surfaces, sandy land, snowy land, grasslands, swamps and other complex terrains, and can be ridden on their surfaces. Bicycles, etc., in order to ensure that they can be ridden on the required terrain surface, most of them are modified on the basis of the structure of ordinary bicycles, and floats are installed on both sides of the front and rear wheels, or larger hollow wheels are modified, and the frame wheels cannot Folding, oversized tire structures often require special large vehicles to be transported to playgrounds or special places for use, which is inconvenient or even impossible to use private vehicles for transportation, not suitable for private play or outings, and the scope of appl...

AI Technical Summary

Problems solved by technology

[0002] All-terrain bicycles refer to special-purpose bicycles that can be arbitrarily switched between paved roads, rocky mountain roads, water surfaces, sandy land, snowy land, grasslands, swamps and other complex terrains, and can be ridden on their surfaces. Bicycles, etc., in order to ensure that they can be ridden on the required terrain surface, most of them are modified on the basis of the structure of ordinary bicycles, and floats are installed on both sides of the front and rear wheels, or larger hollow wheels are modified, and the frame wheels cannot Folding, oversized tire structures often require special large vehicles to be transported to playgrounds or special places for use, which is inconvenient or even impossible to use private vehicles for transportation, not suitable for private play or outings, and the scope of application is limited;

[0003] Moreover, the shock-absorbing system of the common amphibious bicycle at present mostly relies on the shock-absorbing effect of the wheel itself to realize the shock-absorbing. When driving on uneven potholed roads or rocky mountain roads, the shock absorption effect is not very ideal, and the passing capacity is relatively limited, which affects its scope of application;

[0004] And common amphibious bicycle at present, generally adopt fixed vehicle frame bar to connect between its handlebar and seat, the front and rear positions of handlebar and seat all are fixed, when going out and playing and needing to carry, this bicycle structure does not need to carry. It is convenient for private car transportation, but there are many inconveniences, and this bicycle structure cannot adjust the position and distance between the handle and seat according to the user's body shape, etc., which cannot meet the needs of comfortable riding, and the number of seats is average. They are all fixed and cannot be increased or decreased according to actual needs, and the scope of application is limited;

[0005] Moreover, the current common amphibious bicycles generally use pedals to drive the rear wheels to rotate, and are suitable for riding on a single and ideal terrain surface such as land or water, and cannot freely switch between different terrain surfaces, or Riding on relatively harsh terrain surfaces such as soft sand, snow, grass, swamps, etc., for example, riding from water to land, or riding on soft sand, snow, grass, swamps, etc. When riding, because the front wheel has no driving force, the driving rear wheel is easy to slip in water and soft sand, snow, grass, and swamp, and cannot provide enough driving force to drive the bicycle forward, which affects riding. line effect;

[0006] Moreover, the current common amphibious bicycle is generally designed as a four-wheel structure in order to ensure that it can ride slowly on different terrain surfaces, but its front and rear two pairs of wheels are all installed on the same rotating shaft to rotate synchronously. When a four-wheeled bicycle needs to turn when driving at high speed on paved roads, or when driving on an uneven terrain surface, the rolling radius required by the inner wheel and the outer wheel will be different, but different speeds cannot be achieved, which will easily lead to wheel failure. The phenomenon of slipping and dragging makes the bicycle difficult to control, the braking performance is reduced, and the driving stability is deteriorated and other safety hazards, which affect the riding effect and riding safety.

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