Development
How was this wheelchair created? What were the steps taken while making the wheelchair?
Learn more!
The first steps
Drawings & References
The design process began with an initial sketch created using web-based whiteboard software, informed by extensive research into existing wheelchair mechanisms and innovations. Online references were studied to identify the most effective design principles. Using this foundational sketch, the computer-aided design (CAD) process was initiated in SolidWorks.
The CAD Process
The spokeless wheel, was modeled using the "Revolve Around Axis" command in SolidWorks. The wheel incorporates an internal ball bearing system, consisting of several small balls placed between the rim and the outer tire. A separate rim and tire structure was employed, allowing the wheel to spin freely around the central hub. A ball cage was introduced to maintain the position and spacing of the bearing balls, enhancing overall stability and smoothness during rotation.
Making the Chassis
​The chassis of the wheelchair was developed in two parts, connected by a pair of wooden boards joined with a central hinge. This folding mechanism allows the wheelchair to collapse for easy transportation and storage without compromising structural integrity. The seat was constructed using durable wooden boards, secured together using 5mm screws and hinges to enable folding functionality.
The Brakes
A custom brake system was also developed, employing a third-class lever mechanism. It is actuated via a gear-knob-style handle located on the armrest. This intuitive design allows users to engage the brake quickly and effectively, halting the wheels with minimal effort and distance.
Quality of life improvements
Additional user-focused features were incorporated to enhance everyday usability. These include ergonomic push handlebars, integrated storage bins, and a detachable tray table for increased convenience.
