Coursework – Fall 2021
Sit-Stand
Electric Scooter
A scooter that provides higher posture, better accessibility, and ultra-portability.
A Sit-Standing Posture
Compared to a conventional sitting posture, the sit-standing posture alleviates back pressure and provides a larger and higher accessible area.
Wellness
Long-term riding on a scooter/wheelchair does nothing helpful for overall wellness. Sitting for a long time increases spine compression and the probability of vascular congestion and muscle atrophy. Users usually trap in a degeneration loop due to the lack of body stretch
Accessibility
“Results showed that residents, experts and carers all prefer chairs which are above the recommended height for older people so that they will be able to get out of them more easily. ”
“Variable height chairs, a range of chairs of different heights in each space and footrests could all address the height problem.”
Seating in aged care: Physical fit, independence and comfort, 2018, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5758957/
Weight
Customers evaluate weight and volume when choosing a scooter. In some cases users do not ride on scooters all day long, they load scooters into cars and drive to their destination instead. In this scenario, the scooter is the last mile solution rather than a daily drive solution, but loading the scooter into/out of the car can be challenging since most three wheels and four wheels scooters weigh over 50 lb. and are chunky, and none-foldable.
Moving aid products majorly consist of three categories: wheelchairs, electric scooters, and walking-aid products.
New products generally fall between the wheelchair and the electric scooter. They are very capable, but heavy and chunky. The sit-standing scooter is designed to fill the gap between foldable moving-aid products and standard motorized products.
Designed for Variety Dimension
Two electric actuators and two dampers guarantee the comfort and compatibility.
The scooter heights 14.5 – 31.5 inches, and the depth (seat center point to foot) 11.9 – 18.5 inches.
Details
According to CDC’s 2015-16 NHANES survey, 90% (5 to 95 percentile) population’s height is 5’4’’ to 6’2’’ (male) and 4’11’’ to 5’8’’ (male).
Ratio between the length from caput femur to foot and the height is approximately 1:2. Ratio between the length from calf bone to feet and the length of femur is 1:1.
Ramp Compatible
Max Ramp: 18°
Details
According to ADA, the max egress ramp for wheelchair is 4.76 degrees
Easily Portable & Ultra Lightweight
Easily fit the scooter in the car cargo.
Lightweight materials including carbon fiber, aluminum, and polypropylene, together with lightweight parts such as mini motors and mesh lumbar support, make the scooter weighs only 25 pounds.
Controller
The interchangeable controller fits both the right and left hand. All wires go in a single cable for ease of swap.
The pressure sensor makes sure the controller is only engaged when the user firmly holds the joystick.
Modularity
By individually mounted on each pole, interchangeable batteries can be taken on/off the scooter based on the user’s preference of milage or weight.
Modular parts including a cup holder and hooks bring more convenience.
Kuangming Qin 