Case study of technical contradiction Japan VE Association (Kansai - - PowerPoint PPT Presentation
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
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Japan TRIZ symposium in 2013
Research of Development type TRIZ Technique (Part 7)
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.
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Masa sayuki I i Ish shii i (Sum umito tomo E Electr tric Indu Industries, , Ltd.) Ltd.) Hiroshi hi O Oyatani ani ( (Mazda) da) Takas ashi hi S Suzuk uki (Mazda da) Chi hiak aki H Hay ayashi (Kaw awasaki Indu Industries, Ltd.) Ltd.) Sato atoshi H Hirono
Tos
Mas asaki (Nitto D tto Denk enko) Shini nichi M Matsue ( ue (West t Japan pan Railway ay) Manabu abu Mizobuc
hi (Panas nasoni
Ets tsuo Yam amada ( (Cano anon Inc Inc.) .) Masay ayuk uki I Inoguc guchi hi (Panas nasoni
Ichiro
ue (Kyot
gyo
ersity ty) Tor
u Kaw awai ai ( (Shar harp) Seiya a Sato (
ppon Screen M een Mfg.) Naohi aohiko
akay ayam ama ( (Shi himadz adzu Co u Corpor porati tion
Ryu yuji ji Naka ka (Mitsubi ubishi hi E Elec ectric C Corporat ation)
Hiromi F Fujiwar wara ( a (Shimadz adzu C u Corpor
ation)
Shigeak geaki Matsui ui (Mitsubi ubishi hi E Elec ectric C Corporat ation)
Bunt nta M a Matsuhana ( uhana (Shimadz adzu C u Corporati ation)
Naoshi hi Y Yoshi hida da (Mitsubi ubishi hi H Heavy Indus ustr tries es) Takas ashi hi S Shitak taka ( a (Kubota)
Hirofu
ato ( (Brot
Industries, Ltd.) Ltd.)
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2.Individual tool 1 1.Entrance
①Problem definition ②Product analysis ③Analysis why why ④Attribute analysis ⑤technical contradiction ⑥Physical contradiction
3.Individual tool 2
⑦Place material-analysis
⑧Law of technological system evolution The 2nd report The 1st report The 3rd report The 4th report technical contradiction report omission The 6th report
⑨SLP
The 5th report
The case study project was done from 2006 to 2011.
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"Examination procedure of the technical contradiction cancellation (idea)" obtained from the case study project executed in 2006 - fiscal year 2011 is as follows. "Measures plan" Phase "Problem analysis" Phase
Step5: Setting of technical contradiction
Step4: Attribute analysis Step3: Analysis why why Step2: Product analysis Step1: Problem definition Step6: Idea creation
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Picture frame
String (1) Nail (1) Hook (2 pieces) 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.
Vibratio ion The string shifts by the vibration transmitted from the wall.
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1.Syst stem n name Pic icture fra frame s set 2.Ba Back ckgroun und 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 fro from t the w wall ll, and t the p pic icture fra frame in inclines. 3.Id Ideal al s solution 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
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 funct ction
Omissio ion ( (Refe fer to the p product analy lysis is). ). 5.Solu lutio ion p proble lem 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 is is a vib 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. 6.Lim imit itin ing c condit itio ion ･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. ･The s stri ring is is not wra rapped aro round t the n nail il. ･The he b bottom o
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.
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Two hooks Nail St String
The b bear a against by t the f fricti ctiona nal force. ce. It h hold lds. s. It maintains it. The end of a string is fixed.
Cause the vibration Cause the vibration The vibration is caused.
Weig ight is is suppo pport rted. d.
The bear against by the frictional force.
Picture frame (product) Wall
The vibration is caused. The vibration is caused.
It It i is pos possible t to
try to y to put i t it. t.
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The picture frame inclines. Center of gravity doesn't encounter it.
The position in which the string catches on a nail shifts.
Center of gravity is not understood easily. Center of gravity is not matched easily. The vibration of the outside is transmitted. The frictional force of the picture frame and the wall is weak. The frictional force of the nail and the string is weak. The vibration cannot be absorbed. The center of gravity of the picture frame has changed.
The string slips.
When putting it on the wall After time passes
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Thi Thing ng
Attr ttribute Incr crea ease Rela latio ion /t /that ca cannot b be e ca called whic ich i investig igatio ion nece ecessity A A de decrease Rela latio ion
kness ss Elastic icit ity Fla lat ra rate Transformation Water p permeabilit ility Weight ht Frictio ional p l propertie ies
kness ss Inclin linatio ion ( (installa llatio ion a angle le) Fla lat ra rate Easiness t to rust st Frictio ional p l propertie ies
Attribute
Problem (bad effect) Attribute Problem (bad effect)
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The picture frame inclines. Center of gravity doesn't encounter it. The position in which the string catches on a nail shifts. Center of gravity is not understood easily. Center of gravity is not matched easily. The vibration of the outside is transmitted. The frictional force of the picture frame and the wall is weak. The frictional force of the nail and the string is weak. The vibration cannot be absorbed. The center of gravity of the picture frame has changed. The string slips.
It examined it by this this time.
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Selected primary cause Object (The thing that is original of the primary cause . The attribute is not included). Purpose of object (reason wanting it like current state each other) Being acted thing (thing to receive action from object) Action that causes it for thing that it acts object The thing (object) that is
cause is clarified.
Because it is that the reason wanting it like the current state each other (purpose) is sure to exist, the purpose is clarified to the object.
When some actions have been caused for the thing (being acted thing) to achieve the purpose, the object is caught. Primary cause selected from result of analysis why why.
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Selected primary cause The frictional force of the nail and the string is weak. Object (The thing that is original of the primary cause . The attribute is not included). String Purpose of object (reason wanting it like current state each other) ??? Being acted thing (thing to receive action from object) Nail Action that causes it for thing that it acts object
The purpose of the object (string) was not defined easily.
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Two hooks Nail St String
The bear against by the frictional force. It holds. It maintains it. The end of a string is fixed.
The vibration is told.
The vibration is caused. Weight is supported.
Picture frame (product) Wall
The vibration is caused. The vibration is caused. It is possible to try to put it.
One of "Can start starting"
use the string. It doesn't describe it as an action.
Because the object is a string, you should think as an action of the
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Two hooks Nail St String
The bear against by the frictional force. It holds. It maintains it. The end of a string is fixed.
Cause the vibration Cause the vibration
The vibration is caused.
Weigh ght i is s told ld. . The bear against by the frictional force.
Picture frame (product) Wall
The vibration is caused. The vibration is caused.
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Selected primary cause The frictional force of the nail and the string is weak. Object (The thing that is original of the primary cause . The attribute is not included). String Purpose of object (reason wanting it like current state each other) Detaching the picture frame is easy and the adjustment of the inclination is facilitated. Being acted thing (thing to receive action from object) Nail Action that causes it for thing that it acts object The weight of the picture frame is told.
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A profitable action: The weight of the picture frame is told.
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Selected primary cause At each embarrassment that the selected primary cause causes Object (The thing that is original of the primary cause . The attribute is not included). Being acted thing (thing to receive action from object) Action that causes it for thing that it acts object In general, a high-ranking factor shows one about the primary cause selected when analyzing it why why at this each embarrassment. "Each embarrassment" that the selected primary cause causes is caught when having caused as a result of causing some actions for the thing that it acts the object.
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Selected primary cause The frictional force of the nail and the string is weak. At each embarrassment (a ..one.. high-ranking factor of the selected primary cause) The string slips. Object (The thing that is original of the primary cause . The attribute is not included). String Being acted thing (thing to receive action from object) Nail Excessive harmful/shortage/action that causes it for thing that it acts object The bear against by the frictional force (lack action).
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The lack action: Bear against by the frictional force.
The action model is made from the
acted thing and the action work. (above figure) However, there is impossibility in the expression as the action that works at one direction to the thing act from the object because the frictional force is power to work mutually between two things. (figure below) The way things are going, the contradiction model cannot be
Object Being acted thing Profitable action：○○○ Excessive action：●●● Purpose:□□□ Result：■■■
Act ction
el assum umed ed at fi first Exces cessive e ha harmful ful/s /shor hortage/a e/act ction
n prob
em of
incl nclina nation
ctur ure e fr frame
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The purpose: Detaching the picture frame is easy and the adjustment of the inclination is facilitated.
I have occurred the phenomenon "The string slips" because of "Bear against by the frictional force" insufficient, and want to prevent this from occurring. It becomes impossible to achieve the purpose "Detaching the picture frame is easy and the adjustment of the inclination is facilitated" though it only has to fix the string to the nail and to prevent the position of the string and the nail from shifting for that. Explanation ≫ of model of record on ≪
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The improved characteristic and the deteriorating characteristic are defined. Improved characteristic Power (power to fix position of string and nail) Deteriorating characteristic Easiness of operation (easiness of detaching and registration of picture frame to do) I have occurred the phenomenon "The string slips" because of "Bear against by the frictional force" insufficient, and want to prevent this from occurring. It becomes impossible to achieve the purpose "Detaching the picture frame is easy and the adjustment of the inclination is facilitated" though it only has to fix the string to the nail and to prevent the position of the string and the nail from shifting for that.
The improved characteristic and the deteriorating characteristic are chosen referring to the above-mentioned sentences.
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It newly adds it.
"Contradiction model" is changed to "Action model".
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The following result was achieved as a result of doing the case study concerning technical contradiction that assumed "Problem of the inclination of the picture frame" to be a theme.
1.Necessity and the method of reviewing product analysis 2.Method of making more logical "Action model" [Ni] was concerned, and the new insight was able to be obtained.
consideration analysis of the time passage was obtained.
procedure was able to be made a refinement.
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