A Stair-clamping Wheelchair for Elder People Based on Compound Structure

In China, there is still a lot of the buildings which are without elevator, meaning that the floors can only be accessed by walking up and down stairs. It is slow, time-consuming and energy-consuming. At the same time, due to social enhancement like rising life expectancy, population aging has become a common phenomenon in majority regions of China. As there are more old people in the residential system, the challenge of climbing staircases is beginning to be considered as a potential social issue. Indeed, it is easy to find a stair-climbing wheelchair on the market nowadays, but not much device is able to provide the proper help for the majority of old ones who suffer through a daily double challenge of carrying some heavyweights from the vegetable markets and climbing the stair just to access residents. At present, the stair-climbing mobility has already been developed for several years, and there are a lot of different mechanical structures with different features. My design attains the maximized efficiency of stair-climbing and is able to consistently maintain the weights in the box structure always horizontal relative to the ground, under a device-body angle self-adjusting system. And it is able to do the job stably and efficiently, it will further facilitate the elders’ lives.