Exploring the possible forms the backrest/ handles of the design might take.

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My design will have handles allowing the user to rest a significant amount of their body weight on as well as push & stop the device. At the moment I’m contemplating how they will be positioned.

Here are some examples of the possible grips using bike handles.

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Through doing  cardboard 1:1 mockups and it also being raised in class, it’s clear that the design needs to be able to fold up in order to be more compact and to be able fit in to any type of vehicle, in order not to restrict the user.

These are some good examples of products that incorporate folding mechanisms within their design.

Yoshiyuki Hibino’s  Line Chair:

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Corner Ladder by Company & Company:

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Urbo Pram:

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Folding Pusher:

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form1I have tried to explore the basic size, look and feel of what the product could potentially look like. At this point I want to steer away from the look of a conventional bike/tricycle because it might misinform the user of its intended purpose. I am trying to come up with a form that is identified as a medical device that is friendly, with its form communicating its function.

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This video is of the Zaha Hadid Form in Motion exhibition. Her pieces have inspired the construction, proportion and general shape of some of my initial concepts

These are some of the key areas of the design. Having these measurements to use as a guide for my design as well to see possible opportunities to design for with the existing mobility devices leaving room for improvement.

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This diagram depicts the minimum clear width required by users of manual wheelchairs, powered wheelchairs and scooters to complete a 90-degree turn.
. The findings from the table above indicate that a width of at least 85 cm was required for 50% of the manual and power wheelchair users measured in this study to perform a 90-degree turn.

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A width of 100cm was required in order for 95% of manual wheelchair and power chair users to complete the turn, with 95% of scooter users needing a width of at least 110 cm.  This data is based on measurements of wheeled mobility users performing 90- degree turns in a hallway, built with mock walls.

anthro 4This shows the minimum dimensions for the rectangular floor area required by occupied wheeled mobility devices (i.e., with the occupant seated in their own wheeled mobility device) when stationary. This is key for use in public areas including trains, buses, movie theaters and sports stadiums). The clear floor area width dimension also informs the minimum clearance width for successful passage through corridors, doorways, and wheelchair ramps. Currently, the accessibility guidelines prescribe a minimum floor area of 760 x 1220 for wheeled mobility access. The data indicates a minimum clear floor area of 786 x 1362 mm. for manual chairs, 827 x 1414 mm (33 x 56 in.) for powered chairs, and 837 x 1435 mm (33 x 56 in.) for scooters.

anthro7It references dimensions of clearance height and depth to the forward-most abdomen point on a person in relation to the built environment (tables etc). Shaded areas depict the amount of space required by the specified percentage of people if positioned with the abdomen touching an obstruction. This highlights a potential conflict with my design, as I want to increase the seating height for the user to be closer to eye level with a standing person, it will mean it wont be able to interact with table, desks etc very well. (user will have to use a chair instead)

Data and statistics from Anthropology of Wheeled Mobility (2010)