Structural Design and Motion Analysis of a Rehabilitation Wheelchair for Posture Conversion during Sit to Stand Transfer

Rehabilitation wheelchair for posture conversion during sit to stand transfer is of great significance in rehabilitation training. Based on the basic form and evolution form of linkage mechanism, the combination of motion mechanism for a rehabilitation wheelchair is completed, and the motion size of the mechanism is determined by CAD software. Then, on the basis of the motion mechanism of rehabilitation wheelchair, the mechanical structure is designed. The motion analysis of the chair surface is carried out by using path tracking method in SolidWorks, and the tracking track of the chair surface is obtained. The calculation and simulation results show that the designed rehabilitation wheelchair conforms to the basic trajectory posture conversion during sit to stand transfer, and the movement is stable that can meets the requirements.