DESIGN AND FABRICATION OF ELECTRIC WHEELCHAIR AND MODIFICATION OF SUITABLE TWO WHEELER FOR PARAPLEGICS PRASANT P POST GRADUATE IN PRODUCT DESIGNE & ENGINEER BANGALORE INDIA

GOAL - TO “REDUCE” DEPENDENCY OF PARAPLEGIC!!

Paraplegics faces difficulties in his/her day to day activities

Paraplegics?

A person who cannot move their lower part of their body

Improving the quality of life of Paraplegic

CAUSES Stats of Fully Developed and Developing country

Developed Country Ex., USA, Centers for Disease Control and Prevention (CDC), 2004 Prevalence Approximately 1.9% of the U.S. population, or some 5,596,000 people, reported some form of paralysis based on the functional definition used in the survey. Approximately 0.4% of the U.S. population or some 1,275,000 people reported being paralyzed due to a spinal cord injury Causes of Paralysis and Spinal Cord Injury The leading cause of paralysis was stroke (29%), followed by spinal cord injury (23%) and multiple sclerosis (17%). Various types of accidents accounted for the great majority of spinal cord injuries. Courtesy:

Paralysis and Spinal Cord Injury in the United States Courtesy:

Disabled persons constitute about 2 per cent of the total population in our country. Developing Country Ex., India, National Sample Survey Organisation (NSSO), 2002 VillagesUrban Number of Atleast one disable person Number of disabled persons % age of population8.40%6.10%

The number of disabled persons in the country was estimated to be million during July to December, They formed about 1.8 per cent of the total population. About per cent of the disabled persons suffered from more than one type of disabilities. For every people in India, there were 1755 who were either mentally or physically disabled. Among the rural residents, the prevalence of disability was 1.85% and that among the urban, it was 1.50%. The rate for males was 2.12% and 1.67% while that for females was 1.56 and 1.31 per cent in rural and urban India, respectively.

Mental DisabilityVisual Disability Hearing Disability Speech Disability Only Locomotor Disability Only Multiple Disability Any Disability Mental Retardation only Mental Illness only Blindness only Low Vision Only Rural Urban All India

Difficulties faced by Paraplegics in their day to day activities Commuting with the home/working place Bathroom issues Moving ON and OFF the bed Automobile accessibility Shopping, Parking and Dressing

Difficulties faced by Paraplegics in their day to day activities Commuting with the home/working place Bathroom issues Moving ON and OFF the bed Automobile accessibility Shopping, Parking and Dressing

PROBLEM!! WHEELCHAIR 2 WHEELER

ORIGIN OF PROBLEM!!

EXISTING MEANS

SUPER SPLENDOR

TVS XL MODEL- SIDE ATTACHMENT SUZUKI ACCESS 125

DISCOVER FIX ATTACHMENT

TRICYCLE

MOPED FIX ATTACHMENT

OBJECTIVE OF THIS PROJECT

This project aims at developing a low cost electric wheelchair which is capable of withstanding the rigors of the road of India and modifying a two wheeler available in the market so that electric wheelchair will be an integral part of the two wheeler enabling the paraplegic person to ride on the road. The Project involves making an electric wheelchair which combines an integral part of a two wheeler so that he can just attach his wheelchair to the road going vehicle without getting off of his wheelchair. Thus making him completely independent of any external help. The project will be focused on lowering cost for fabrication part so that if it is manufactured on a large scale, the overall price of the entire unit will be low enabling those physically handicapped people who are cash strapped to purchase the unit.

 Concept 1 Concept 2

 Concept 3 Concept 4

 Concept 4a Concept 4b

Concept 4c Concept 4d (FINAL SHORTLISTED CONCEPT)

~3’

~2’

#PART NAME WEIGHT IN KG. QUANTITYCOST IN RS. 1Side Tube Collar pivot Bushing for collar Cross member U-Tube U-Tube extension Upper pivot for rear shock absorber Seat frame angle piece Controller frame flat piece Arm rest flat piece Tubing from front wheel fork Seat pivot for back rest Stop for back rest

14Back rest lower plate Rectangular tube for guide Bushing for lock Lateral square tube for guide Rear lock Battery frame Battery farm support rod Upper plate of back rest Back rest lower plate Swing arm Swing arm pivot bolt rod Swing arm pivot nut Front fork Shock absorber for front wheel Front smaller wheel

29Shock absorber for rear wheel Rear electric powered wheel Controller frame flat piece Three way changeover switch Dry cell batteries Accelerator with brake lever system mts. Of wiring Brake drum Sliding bracket(back) Sliding fixed plate Sliding fixed plate Sliding inner plate Screw rod for sliding Handle for sliding mechanism Top bracket for sliding mechanism Sliding bracket(front)1250 TOTAL27397

SCOPE FOR FUTURE WORK

Better interface with the controller as the existing system was just an adaptation from an electric cycle kit. Use of joystick with micro-controller controlled movement of the wheelchair will greatly enhance the driving pleasures. Use of alloy rims instead of spoke rims there by reducing the chances of wheel bends. Sliding mechanism for front wheels can be made hydraulic for ease of use The wheelchair can be made suitable for adaptation to all two wheelers in the market.

EXISTING PROBLEMS

Footrest portion Time to assemble with 2 wheeler Universal Design!!!!!!! Expand the adaptability to 4 wheeler