Development of Electric Wheelchair Vehicle

1. The invention of electric wheelchair is about the beginning of the 20th century. In 1940, the United States issued the first patent certificate for electric wheelchair vehicles.

2. But the initial products are not taken seriously: because the early products are bulky, high cost, inefficient and low reliability, so they are not taken seriously.

3. After the Second World War, a large number of surviving disabled people surged, and the market demand suddenly increased.

4. During the 1960s and 1970s, the stability of the controller was gradually improved, and some special control interfaces were developed successfully.

In the fifth and eighties, because of the microprocessor and its application in the manufacture of controllers, the controllability and stability were greatly improved.

In the 1960s and 1990s, the development of electric wheelchairs mainly focused on structural design improvement, including:

(1) All kinds of skeletons specially designed for electric wheelchairs.

(2) Design of separation of seat system and transmission base.

(3) Design of transmission wheels in different positions.

With the progress of technology, the design of electric wheelchair vehicle is more and more exquisite. The design of electric wheelchair vehicle is more and more lightweight. It is suitable for indoor activities, outdoor activities, activities in public places, and also can move forward on unstable bumpy roads.

The seat system of an electric wheelchair car can be divided into:

1. Planar Fixed Type: The seat surface and backrest are planar design, and the angle between the seat and backrest is fixed and can not be changed.

2. Lie flat: The angle between the back and the seat surface can be changed (lie back or rise). Decompression, blood pressure nursing, stretching.

3. Reclining type: The relative angle between the whole seat system and the horizontal plane can be changed.

4. Standing type: Wheelchair skeleton can support the elderly and disabled from sitting posture to standing posture.

5. Height Variable: Wheelchair seat angle unchanged, can let the elderly, disabled people up and down to different heights.

6. Electric wheelchairs suitable for home and office.