Balancing Mechanism of Wheelchair Seat against The Angle of Inclination without Elec-

tric Energy

Group name : 올라가 조20081972 박경원20091994 정태산20102068 이효진20111974 강석우

Contents

1. Motivation2. Goal3. Related Patents4. Our Concept5. Numerical Analysis6. Verification for Stability & Efficiency7. Overall design8. Reference

1. Motivation

• Wheelchair is only means of move-

ment for the disabled

• Wheelchair users inevitably meet some stairs, raised spots and slopes

1. Motivation

• A wheelchair climbing some terrain has

to balance its seat for stability.• Wheelchair users often complain about

battery duration time.

1. Motivation

https://www.youtube.com/watch?v=CQkKOoztij0

2. Goal

Design and make a system to bal-ance

wheelchair seat by using force of gravity instead of electric energy.

3. Patents

Hand-operated

3. Patents

Consume electric energy

4. Our concepts

FRs

Rotate Deceler-ate Fix

(1) FRs & DPs

4. Our concept

DPs

Pivot Spring Switch

(1) FRs & DPs

4. Our concept

H

• We modified our concept.

5. Numerical analysis

(1)Center of Gravity① Average body dimension of men in 30’s② Simplify body such as head, torso, arms,

legs③

5. Numerical analysis

5. Numerical analysis

(2) Measure the battery efficiency

5. Numerical analysis

In process..

6. Verification for stability & Efficiency

We will prove that our product can

save electric energy and is stable

7. Overall design

In process..

• http://www.kipo.go.kr – 특허청• PYH2010041701830001300_P2http://app.yonhapnews.-

co.kr/YNA/Basic/Gallery/YIBW_showPhotoNews_New.aspx?contents_id=PYH20100417018300013

• 닥터메디 www.doctormedi.com• 경성대학교 고령친화 백화점 selris.co.kr• http://wheelopia.co.kr/powerchair/top_chair.html• 창의적 문제해결 TRIZ 100 배 활용하기 1, 정찬근 정다혜 이경원 공저• http://www.hankyung.com/news/app/newsview.php?aid=20

1104192575g• http://www.seoul.co.kr/news/newsView.php?id=201308150

09012• http://www.consumertimes.kr/sub_read.html?uid=235&sect

ion=sc5• http://pann.news.nate.com/info/252870940• wPYH2010041701830001300_P2http://app.yonhapnews.-

co.kr/YNA/Basic/Gallery/YIBW_showPhotoNews_New.aspx?contents_id=PYH20100417018300013

8. Reference

Q&A