Japan TRIZ symposium in 2013 Research of Development type TRIZ Technique (Part 7) Case study of technical contradiction Japan VE Association (Kansai Branch, West Japan) Easy-to-use TRIZ Study Group (former TRIZ Spreading and Utilizing Study Group) Hisayoshi Tanaka (Shimadzu Corporation), Makoto Unno ( ), Kazuyasu Ikeda (Sekisui Engineering Co Ltd.), et al. 1
Case study project members Project members other than those on cover slide (INPO) Masa sayuki I i Ish shii i Tor oru K u Kaw awai ai ( (Shar harp) (Sum umito tomo E Electr tric Indu Industries, , Ltd.) Ltd.) Seiya a Sato ( o (Dainippon ppon Screen M een Mfg.) Hiroshi hi O Oyatani ani ( (Mazda) da) Naohi aohiko o Tak akay ayam ama ( (Shi himadz adzu Co u Corpor porati tion on) Takas ashi hi S Suzuk uki (Mazda da) Ryu yuji ji Naka ka Chi hiak aki H Hay ayashi (Mitsubi ubishi hi E Elec ectric C Corporat ation) on) (Kaw awasaki Indu Industries, Ltd.) Ltd.) Hiromi F Fujiwar wara ( a (Shimadz adzu C u Corpor orat ation) on) Sato atoshi H Hirono ono (Omron) on) Shigeak geaki Matsui ui Tos oshiaki M Mas asaki (Nitto D tto Denk enko) (Mitsubi ubishi hi E Elec ectric C Corporat ation) on) Shini nichi M Matsue ( ue (West t Japan pan Railway ay) Bunt nta M a Matsuhana ( uhana (Shimadz adzu C u Corporati ation) on) Manabu abu Mizobuc obuchi hi (Panas nasoni onic) Naoshi hi Y Yoshi hida da Ets tsuo Yam amada ( (Cano anon Inc Inc.) .) (Mitsubi ubishi hi H Heavy Indus ustr tries es) Masay ayuk uki I Inoguc guchi hi (Panas nasoni onic) Takas ashi hi S Shitak taka ( a (Kubota) ota) Ichiro o Inoue ( ue (Kyot oto S o Sangy gyo o Univer ersity ty) Hirofu ofumi Sato ato ( (Brot other Indu Industries, Ltd.) Ltd.) 2
Current content of activity The case study project was done from 2006 to 2011. ① Problem definition The 1st report ② Product analysis 1.Entrance ③ Analysis why why The 2nd report ④ Attribute analysis technical ⑤ technical contradiction contradiction 2.Individual tool 1 report omission ⑥ Physical contradiction The 3rd report ⑦ Place material-analysis The 4th report ⑧ Law of technological 3.Individual tool 2 The 5th report system evolution ⑨ SLP The 6th report 3 3
Content of presentation 1.Purport of this report 2.Introduction of "Examination procedure of technical contradiction cancellation (idea)" 3.Introduction of outline of case study 4.Reflection of finding obtained by case study 5.Summary 4
1. Main message of this report The case study project was done during 2006 - 2011. From 2012, it is examined to maintain it as a guidance used easily. This time, it reports concerning the technical contradiction omitted in past reports. 5
2. Introduction of "Examination procedure of technical contradiction cancellation (idea)" "Examination procedure of the technical contradiction cancellation (idea)" obtained from the case study project executed in 2006 - fiscal year 2011 is as follows. Step1: Problem definition Step2: Product analysis "Problem analysis" Phase Step3: Analysis why why This time, Step4: Attribute analysis It explains around "Step5: the setting Step5: Setting of technical of technical contradiction "Measures plan" Phase contradiction". Step6: Idea creation 6
Step5: Setting of technical contradiction Step5-1: Selection of primary cause Step5-2: Definition of profitable action Step5-3: Definition of excessive harmful/shortage/action Step5-4: The contradiction model's making Step5-5: Setting of technical contradiction 7
3. Introduction of the outline of the case study "Problem of the inclination of the picture frame" was caught as a theme, it examined according to "Examination procedure of the technical contradiction cancellation" made with this society, and it verified it concerning this procedure. 8
New case: Problem of inclination of picture frame Wall Nail (1) String (1) Hook (2 pieces) Vibratio ion The string shifts by the vibration transmitted from the Picture frame wall. I want to prevent the picture frame from inclining even if there is a vibration that exists in standard living conditions. Measures against the inclination of the picture frame in the environment with an abnormally large vibration that the train passes immediately side near the construction site are not done this time. 9
Step1: Problem definition 1.Syst stem n name Pic icture fra frame s set The g goin ing stri ring on t the n nail s shift fts gra radually b by the v vib ibration t tra ransmitted 2.Ba Back ckgroun und fro from t the w wall ll, and t the p pic icture fra frame in inclines. The he pict cture f frame does esn't i inc ncline ev even if det etaching and nd t the r he reg egistration 3.Id Ideal al s solution of f the p pic icture fra frame are re e easy and t there is is a vib ibra ration. 4.The m he main n elem emen ent that c composes techn chnological s system em and t the e Omissio ion ( (Refe fer to the p product analy lysis is). ). funct ction on It improves es it so that t the p e pict ctur ure f frame e shoul uld not i incl cline e even en i if ther ere e 5.Solu lutio ion p proble lem is a vib is ibra ration t that exis ists wit ithout g gre reatly b basically c changing a pre resent metho hod in stand ndard l living ng c cond nditions ns. ･ Measur ures es a agains nst the i e incl clination o n of the e pict ctur ure frame i e in the e environment w wit ith a an abnormally la larg rge v vib ibration that the tra rain p passes immed ediatel ely s side n e nea ear t the c e cons nstruct ction n site e are n e not d done t ne this time. ･ The s stri ring is is 1, , and b both s sid ides are re fix fixed in in the hook. 6.Lim imit itin ing c condit itio ion ･ The s stri ring is is not wra rapped aro round t the n nail il. ･ The he b bottom o of the he p pict cture frame ha has co come i in n co contact w with t h the he wall. ･ On Only t the ro roll ll : : the vib ibration t tra ransmitted fro from the w wall. ll. 10
11 Cause the vibration Wall Cause the vibration Step2: Product analysis frictional force. against by the The bear It i It is pos possible t to o try to tr y to put i t it. t. Picture frame (product) The end of a string is fixed . Weig ight is is suppo pport rted. d. Two hooks It maintains it. String Nail The b bear a against St by t the f fricti ctiona nal It h hold lds. s. force. ce. The The The vibration vibration vibration is caused. is caused. is caused.
Step3: “Why why” Analysis The picture frame inclines. wall When putting it on the Center of gravity doesn't encounter it. Center of gravity is not understood easily. Center of gravity is not matched easily. The position in which the string catches on a nail shifts. After time passes The string slips. The vibration of the outside is transmitted. The vibration cannot be absorbed. The frictional force of the picture frame and the wall is weak. The frictional force of the nail and the string is weak. The center of gravity of the picture frame has changed. 12
Change in product analysis by passage of time When putting After time it on the wall passes 13
Step4: Attribute analysis Attr ttribute Thi Thing ng /t /that ca cannot b be e ca called Incr crea ease A de A decrease Problem whic ich i investig igatio ion Problem Rela latio ion Rela latio ion (bad effect) (bad effect) nece ecessity Attribute Attribute Thickn kness ss Water p permeabilit ility Elastic icit ity String - Weight ht Fla lat ra rate Frictio ional p l propertie ies Transformation Thickn kness ss Easiness t to rust st Nail - Inclin linatio ion ( (installa llatio ion a angle le) Frictio ional p l propertie ies Fla lat ra rate 14
Step5-1: Selection of primary cause The picture frame inclines. Center of gravity doesn't encounter it. Center of gravity is not understood easily. Center of gravity is not matched easily. The position in which the string catches on a nail shifts. The string slips. The vibration of the outside is transmitted. It examined it by this The vibration cannot be absorbed. this time. The frictional force of the picture frame and the wall is weak. The frictional force of the nail and the string is weak. The center of gravity of the picture frame has changed . 15
Step5-2: Definition of profitable action Primary cause selected from Selected primary cause result of analysis why why. Object (The thing that is original of the The thing (object) that is primary cause . The attribute is not original of the selected primary included). cause is clarified. Purpose of object (reason wanting it like Because it is that the reason wanting current state each other) it like the current state each other (purpose) is sure to exist, the purpose is clarified to the object. Being acted thing (thing to receive action from object) When some actions have been caused for the thing (being acted Action that causes it for thing that it thing) to achieve the purpose, acts object the object is caught. 16
Recommend
More recommend
