Electrically powered wheelchair capable of stably walking on staircase and flat ground

Abstract

Provided is an electrically powered wheelchair capable of stably walking on a staircase and a flat ground. The electrically powered wheelchair consists of a seat, a controller, a frame, a front wheel, a similar Archimedes helical line impeller conversion mechanism, a transformable back wheel, a motor and a small front wheel auxiliary caterpillar band. The similar Archimedes helical line impeller conversion mechanism consists of a planet wheel mechanism, a clutch and a telescopic support rod. The planet wheel mechanism consists of four planet gears, a sun wheel and a planet carrier and is connected with the transformable back wheel. The transformable back wheel consists of four sections of circular arc wheel flanges capable of respectively being screwed open towards the outer sides of the wheel flanges and arc-shaped rod hubs, wherein the four sections of circular arc wheel flanges form a complete round back wheel flange, and the circular arc wheel flanges and the arc-shaped rod hubs form four wheel blades completely identical in structure. Each arc-shaped rod hub is fixedly connected with the corresponding planet wheel and connected with the planet carrier through a hinge. The electrically powered wheelchair capable of stably walking on the staircase and the flat ground is simple in structure, high in energy efficiency, stable in motion, conformable in riding and capable of being applied to daily family life of disabled people and old people.

Description

Technical field: [0001] The invention relates to a stable staircase and an electric wheelchair for walking on level ground, belonging to the field of machinery for assisting the disabled and the elderly. Background technique: [0002] There are mainly two kinds of stair-climbing wheelchairs on the market now, namely crawler wheelchairs and planetary wheel wheelchairs. The crawler wheelchair moves smoothly, but has a complex structure, large volume, heavy weight, damage to the stairs, low energy efficiency, and difficulty in turning. The planetary wheel chair is small in size, but the movement is unstable, the center of gravity fluctuates greatly, and the ride is uncomfortable. The "iBOT" of the United States is currently the product with the highest performance index among the star wheel chairs, but the cost is high. Invention content: [0003] In order to solve the problems of complex structure, large volume, damage to the stairs, low energy efficiency and other problems...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of complex structure, large volume, damage to the stairs, low energy efficiency and other problems of the crawler wheelchair in the existing technical solutions, as well as the problems of unstable movement, large center of gravity fluctuation and uncomfortable ride of the planetary wheel wheelchair, the technology adopted in the present invention The scheme is: a stable stair and level ground walking electric wheelchair, which consists of a seat, a controller, a frame, a front wheel, an Archimedes-like helical impeller conversion mechanism, a variable rear wheel, a motor and a small auxiliary track for the front wheel Composition; Archimedes-like helical impeller conversion structure is composed of planetary gear mechanism, clutch and telescopic support rod; planetary gear mechanism is composed of four planetary gears, sun gear and planet carrier, connected with variable rear wheel; The modified rear wheel is composed of four arc rims that can be unscrewed to the outside of the rim and the arc rod hub. The four arc rims form a complete circular rear wheel rim. Each arc rim is connected to the The arc-shaped rod hub forms a blade, and there are four blades with the same structure; each segment of the arc-shaped rod hub is fixedly connected with the corresponding planetary wheel, and connected with the planetary carrier by a hinge, which can rotate around the planetary carrier. The fulcrum of the hinge rotates, and the rotation angle is adjusted by the controller. The outer layer of the variable rear wheel rim is hollow rubber

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