Our improved wheelchair design introduced a handbrake device at the handle and beside the seat to replace the original design of stopping the wheels by hand to facilitate people in wheelchairs and strollers. Besides, we decided to use a calf pad as our calf support. The calf pad is adjustable along the leg support to satisfy everyone’s requirement. The calf pads are fixed by fasteners when the leg supports are moved up and down and folded so as not to shake. In our design, we realize to put the leg supports under the wheelchair by folding and telescoping. We also use rotary damper design to achieve the stable up and down movement of the leg rests to ensure that the wheelchair user will not suffer secondary injuries.
According to the sketches of the design components provided by each team member, Jiaxin Wang designs the dimensions to match the components with each other. The final CAD model is shown on the left, which fully demonstrates the design concepts of each member, such as the brake placed on the handle, the rotary damper and the telescope tube that can be retracted.