A Redesigned Wheelchair for the Physically Challenged

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ABY THANNIKAL JOSEPH ABY THANNIKAL JOSEPH B.E. MECHATRONICS ENGINEERING Mail @ [email protected] Call @ +91 809 826 1593

Transcript of A Redesigned Wheelchair for the Physically Challenged

Page 1: A Redesigned Wheelchair for the Physically Challenged

ABY THANNIKAL JOSEPH

ABY THANNIKAL JOSEPH

B.E. MECHATRONICS ENGINEERING

Mail @ [email protected] @ +91 809 826 1593

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

perform easy locomotion and to reduce backpain.

Locomotion

Backpain

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Locomotion

Backpain

Better manueverability

Ergonomic design

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Our Design:

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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

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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.

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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)

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FIRST PRIZECAD Modeling Competition

TetusuroFest v2.0

Department of Mechatronics

Sri Krishna College of Engineering and Technology, Coimbatore

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