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Engineering Plans

Developing the Solution

The final solution is a variation of the "fixed combination on back" concept. 

Product Description

ASMO Inc.’s final solution is most similar to the original "fixed combination on back" concept. However, there are a few key differences. One of the most popular features of the "adjustable squeegee on rail" concept was its adjustability, so the team decided to incorporate that into this design as well. In addition, rather than utilizing a single brush and a single squeegee, there will be space for multiples of each cleaning device, and they can be placed depending on the wheelchair user’s need. While the bike fender-like idea remains the same, it is placed a bit further down on the wheel, and curves out near the bottom to prevent any debris from flying upwards. Lastly, the mechanism is engaged through a lever-cord system, which enables wheelchair users that are able to propel themselves forward to maintain their independence while cleaning their wheels.

Operation

The Wheely Clean utilizes brushes and squeegees to clean a wheelchair wheel as it rotates. These cleaning devices are held in place by a bike fender-like structure. An extension of the bike fender at the bottom of the product directs all debris down towards the ground, stopping it from gathering on the product and prohibiting water from splashing up at the wheelchair user or others around. The product is held in place by two adjustable support arms. Both arms have a hinge-like motion away from and towards the wheel. A cord is attached near the lower arm, which can be pulled or relaxed from a lever near the armrest of the wheelchair. Pulling the cord presses the device onto the wheel, enabling it to clean the wheel. When the cord is not active, the device is off the wheel and no longer cleaning. This is done to reduce the wear and resistance on the device and wheel. The wheelchair user will likely have the device disengaged at most times, and will activate the device by pulling the cord when they want their wheels to be cleaned.

Justification

Wheely Clean solves the problem of dirty wheelchairs by passively cleaning the wheel with little to no help needed from a caregiver. This eliminates the constant buildup of dirt and debris on the wheel—dirt that is later transferred to the user’s forearms. Concept Eight was chosen as the final concept, with modifications, due to its simplicity and ability to engage and disengage from the wheel in order to reduce friction while maneuvering normally. This design, best satisfies the design specifications and customer needs because it is easily usable for someone with minimal movement that cannot get out of their chair easily to clean it. It satisfies customer needs by utilizing the engage/disengage feature to reduce friction during regular use, and will save the user money by extending the lives of the squeegees and brushes. This concept also improves the user’s quality of life by increasing their independence as they clean their wheelchair on their own. This concept was better than the alternative solutions because of the inclusion of the disengage feature as well as the placement. Concepts Four and Seven required major modifications on the wheelchair, which in the end, was not feasible.

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