a redesigned wheelchair for the physically challenged

ABY THANNIKAL JOSEPH

ABY THANNIKAL JOSEPH

B.E. MECHATRONICS ENGINEERING

Mail @ abytjoseph@hotmail.comCall @ +91 809 826 1593

Problem Statement To redesign a an existing wheel chair for a person to

perform easy locomotion and to reduce backpain.

Locomotion

Backpain

ABY THANNIKAL JOSEPH

Locomotion

Backpain

Better manueverability

Ergonomic design

ABY THANNIKAL JOSEPH

Our Design:

ABY THANNIKAL JOSEPH

Computer like seat

Disc brake

Height Adjustor

Brakes

Shock Absorber

Foot rest

Caster wheel

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FRONT VIEWSIDE VIEW

TOP VIEW

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Technical data:

Material : AISI 4130 (Stainless steel) Circular Cross Sectional Pipe Outer dia : 1” Thickness : 3mm

Length x Breadth x Height

124.8cm x 75.2cm x 94.0cm

Spring stiffness : 75,000N/mm2

Spring deflection : 9mm

Wheel Dia : 55cm

ABY THANNIKAL JOSEPH

Aesthetics:

‘Spine’ frame

The spine frame is based on the Concept that the wheelchair acts as a part to replace the missing body

Hence, the frame acts like an extension to human spine.

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Ergonomics & Features:

Rather than conventional fixed seats, computer chair like seat is used.

The user can ‘pushback’ the seat.

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Ergonomics & Features:

An Adjustable Inclination Setup is provided

This enables the user to sit upright while working on computer and incline when resting

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Ergonomics & Features:

A Shock Absorber is provided in the wheelchair

This helps to absorbs the shocks while on uneven terrains

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Ergonomics & Features:

An Adjustable Footrest is also provided.

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Features:

A Disc brake is also provided in the wheelchair

This helps to stop the wheelchair in emergency situations.

Manufacturability: Low cost parts

The frame can be fabricated by :

Pipe Cutting => Pipe Bending => Pipe Welding

Can be easily repaired in a bicycle shop

Easily replaceable wheels (Standard bicycle wheels)

ABY THANNIKAL JOSEPH

FIRST PRIZECAD Modeling Competition

TetusuroFest v2.0

Department of Mechatronics

Sri Krishna College of Engineering and Technology, Coimbatore

ABY THANNIKAL JOSEPH