Four-wheel steering electric walk instead vehicle

Abstract

The invention provides a four-wheel steering electric walk instead vehicle, wherein a front and a rear fork devices are arranged on the frame, the fork devices are driven by a front and a rear connecting rod connected with a front and a rear fork rocker arms for synchronous movement, and corresponding wheel diversion movements are realized through the synchronous control by each fork boards, thus the four wheels are steered simultaneously under control, and the minimum turning radius is determined by the point of intersection of the four wheel axis. The minimum turning radius can be reduced by around 30%.

Description

[0001] technology field, [0002] The invention relates to an electric wheelchair, in particular to an electric scooter with a four-wheel steering mechanism, which is convenient to turn freely within a small range of motion. Background technique [0003] Existing electric wheelchair is usually provided with three wheels or four wheels on the chassis, and wherein has only one or two wheels with steering function. According to common knowledge, only when the axis of the steering wheel intersects the axes of other non-steering wheels at one point, the wheels can be in a pure rolling state. At this time, the friction force of the ground against the wheels is the smallest, so that it can turn very easily. The axis distance between the intersection point and the nearest wheel is defined as the turning radius. Obviously, for a car with only one steering wheel, its turning radius is smaller than that of a car with two steering wheels, but its stability is relatively poor; The prereq...

AI Technical Summary

Problems solved by technology

Obviously, for a car with only one steering wheel, its turning radius is smaller than that of a car with two steering wheels, but its stability is relatively poor; The prerequisite for entering the pure rolling state is that the intersection point of the axes of the two steering wheels is exactly on the fixed axis of the other two non-steering wheels, and the turning radius is the axis distance between this point and the nearest non-steering wheel, which is only one The turning radius of the steering wheel car is relatively larger. If it is used indoors, the turning radius is not small enough, so it is more likely to collide when turning.

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