1, Height of seat. same as ordinary chair, sitting feet flat on the ground.
2, Width of seat. More than the widest hip at 5 cm.
3, Deep of seat. Sit down, the lower leg can not touch the front edge of the cushion, it is best to have 5cm of space, so as not to compress the knee of the vascular nerves.
4, Armrest. Height than sitting down, the edge of the elbow to the chair surface distance, and then high 2 to 3 cm.
5, Height of backrest. Different from the ordinary chair, the height of the backrest of the wheelchair is relatively low, and it is preferable to subtract 10 centimeters from the distance between the armpit and the chair when sitting down. Because the back is low, the trunk can have a larger range of activities, but poor control of the trunk balance of the elderly, or should choose a high back.
6, Height of the footrest. After sitting down to reduce the foot care, when the heel to leave them, then lift 1.3 to 1.5 cm can be. Exceedingly high will make the load too much focus on the buttocks, easily lead to bedsores. But too low is not enough, at least to leave the box 5 meters to protect the safety of driving.