1. Research
2. Problems
3. Sketching
4. Construktion
5. Prototyping
6. Styleboard
7. 3d design proces
8. Bike and wheelchair mode
The main feature of the design is the adjustable height function, which provides the ability to switch between two positions: wheelchair and bike mode.
In wheelchair mode the vehicle requires less space, which makes it suitable for driving indoor or on the sidewalk. The user can control the chair manually by using the hand rims with the support of an auxiliary motor, or with the joystick. The maximum speed gained from the motor is 6 km/h. If the user would like to travel longer distances that are too far to drive in a manual wheelchair, then he/she can switch to bike mode.
In bike mode the user sits lower and further away from the wheels, which position is safer for driving with a maximum speed of 15 km/h on the bike road. In this mode the user controls the vehicle with a joystick. In the rear wheels there is a built-in motor powered by a 24V lithium battery, which lasts for 25 km driving on one charge.
9. ATTAIN - Final design
ATTAIN gives the user access to places that are usually available as a pedestrian or wheelchair user, while also enables transport over shorter distances to places that are normally reached by bike or car.
ATTAIN is a hybrid between a manual and an electric wheelchair. The vehicle provides the user the same mobility as an electric scooter without compromising the functions of the manual wheelchair.
The support of the auxiliary motor helps to prevent injuries in the shoulder and wrist that regularly appear among wheelchair users. These injuries can easily progress to chronic pain, which reduces the possibilities to maintain an independent life.
3d print 1:5
