1. Balancing Mechanism of Wheelchair Seat against The Angle of Inclination without Electric Energy Group name : 올라가 조 20081972 박경원 20091994 정태산 20102068 이효진 20111974 강석우

2. Contents 1.Motivation 2.Goal 3. Related Patents 4. Our Concept 5. Numerical Analysis 6. Verification for Stability & Efficiency 7. Overall design 8. Reference

3. 1. Motivation Wheelchair is only means of movement for the disabled Wheelchair users inevitably meet some stairs, raised spots and slopes

4. 1. Motivation A wheelchair climbing some terrain has to balance its seat for stability. Wheelchair users often complain about battery duration time.

5. 1. Motivation https://www.youtube.com/w atch?v=CQkKOoztij0

6. 2. Goal Design and make a system to balance wheelchair seat by using force of gravity instead of electric energy.

7. 3. Patents Hand-operated

8. 3. Patents Consume electric energy

9. 4. Our concepts FRsRotateDecelerateFix (1) FRs & DPs

10. 4. Our concept DPsPivotSpringSwitch (1) FRs & DPs

11. 4. Our concept H We modified our concept.

12. 5. Numerical analysis (1)Center of Gravity ① Average body dimension of men in 30’s ② Simplify body such as head, torso, arms, legs ③

13. 5. Numerical analysis

15. (2) Measure the battery efficiency 5. Numerical analysis In process..

16. 6. Verification for stability & Efficiency We will prove that our product can save electric energy and is stable

17. 7. Overall design In process..

18. http://www.kipo.go.kr – 특허청http://www.kipo.go.kr PYH2010041701830001300_P2http://app.yonhapnews.co.kr/YNA/Basic/Ga llery/YIBW_showPhotoNews_New.aspx?contents_id=PYH20100417018300 013 닥터메디 www.doctormedi.comwww.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=201104192575g http://www.seoul.co.kr/news/newsView.php?id=20130815009012 http://www.consumertimes.kr/sub_read.html?uid=235&section=sc5 http://pann.news.nate.com/info/252870940 wPYH2010041701830001300_P2http://app.yonhapnews.co.kr/YNA/Basic/G allery/YIBW_showPhotoNews_New.aspx?contents_id=PYH2010041701830 0013 8. Reference

19. Q&A