Product Design Specifications Mission Statement: This project requires the team to design and build a small functional device that will lift a person from the floor (2”) to the height of a wheelchair or walker (24”- 30”.) The device will be firmly mounted to a wall, and be powered by the person being lifted. This product will be designed for anyone requiring the additional mobility afforded by such a device.
High Priority Requirements Lifting Range Lowers Easily and Safely Human Powered Secure Mounting Ergonomic/Comfort Maintenance Free Long Wearing Finish Cost
Verification Lifting Range –Lifts from 1/2” to 28” Human Powered –Check Secure Mounting –Mounted to wall studs and flooring Ergonomics –Smooth pumping action –Pillow-top seat (add-on) Lowers easily and safely –Controlled by the release valve of the jack Long wearing finish –Powder Coat Maintenance Free –No required maintenanceCost –Final Prototype Cost $165 Lifting Capacity –PDS requirement not met
New Additions Some unpredicted motion of the chair has cause the team to redesign and add a guide block and bearings to the design. The bearings will be attached to the centerline of bolts on the scissor members and will ride up a vertical block to stabilize the vertical motion of the lift.
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