TRIZ Case Study (Lecture Slides):

A Novel Joint Structure To Realize Welderingless Pipe Structures
Minoru Yokouchi (Takano Co., Ltd., Japan);
  [English translation of slides:  Toru Nakagawa (OGU)]
Presented at The Second TRIZ Symposium in Japan
Held by the Collaborative Board of TRIZ Promoters and Users in Japan
August 31 - September 2, 2006
[Posted on Nov. 29, 2006] 

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Editor's Note (Toru Nakagawa, Nov. 15, 2006)

The slides posted here were originally presented at the Second TRIZ Symposium in Japan held by the Japan TRIZ CB and were evaluated highly as an excellent case study of developing a new poduct by applying TRIZ.  Starting with this posting, I am planning to post several papers selected from those presented in the last TRIZ Symposium in the "TRIZ Home Page in Japan".  They were selected by myself as the Editor and were made available in this Web site according to the wishes and permissions by the Authors as the copyrights holders.

Official documents and reports of The Second TRIZ Symposium in Japan were already posted in the official page of the Japan TRIZ CB.  And Nakagawa has also posted his 'Personal Report' of the Symposium introducing all the presentations together with the reviews from his own views.  From the 'Personal Reort', the part reviewing this Yokouchi's presentation is cited below. 

The slides translated into English by Toru Nakagawa and projected on the second screen at the presentation during the Symposium are posted here in the PDF format The original slides in Japanese are posted in the Japanese page.  

We wish to express our sincere thanks to the Author who has achieved this excellent case study, has pblicized it in the Symposium, and has agreed to post it in this Web site.

Introduction & Review of this Presentation (Toru Nakagawa (OGU), Nov. 4, 2006)

Exerpt from Nakagawa's 'Personal Report of The Second TRIZ Symosium in Japan' (posted on Nov. 8, 2006)

One of the best papers in the present Symposium was given by a young owner of a small manufacturing company of 65 employees. Minoru Yokouchi (Takano Co.) presented a paper with the title of "A Novel Joint Structure to Realize Welderingless Pipe Structure". His slides for presentation will be posted in my Web site in the near future. The paper describes their entire process of developing a new product of their own idea, with the help of Nagano National College of Technologies and a TRIZ consulting firm. Their development process are:

(1) Idea generaton of various products 
(2) Evaluation of ideas
(3) Decision making of the ideas: Decided to develop a wilderingless structure made of SUS pipes.
(4) Patent survey and marketing study
(5) Clarifying technical problems and setting the target of development: Realization of wilderingless structure.

(6) Solving technical problems with TRIZ:

a) Function and attribute analysis;
b) Idea generation using Trends of Evolution: Obtained ideas such as Press-formed joint structure, Foaming-material structure, Polyurethane rubber structure, Thermosetting-adhesive structure, Caulking joint structure, and Elastic pipe-end structure.
c) Preliminary evaluation of generated ideas: Caulking join structure was selected.
d) Further problems in the selected idea: Many different forms of joints are necessary.
e) Solving further problems in the selected idea: Contradiction Matrix and Segmentation Principle stimulated a concept of 'Dice Joint Structure'.
f) Yet another problem to solve: Too many parts of dice joints are necessary.
g) Solving the new problem: Contradiction Matrix and 'Prior Action' Principle stimulated a concept of 'TAKA-nut (or High Nut)'. 

(7) Designing and manufacturing
(8) Product evaluation: Evaluation with CAE (3D CAD) and real testing at a governmental organization
(9) Developed products and Proposals to customers:

a) Products: 'TAKANO Dice Joints' and TAKA-nut ('High nut')

b) Proposals to customers: Eco-friendly and clean without weldering; Capable to assemble on the sites; Reusable many times.
c) Merits of the products: Higher quality, cost reduction by 30-50%, delivery time reduction by 80 %.
d) Patents: 5 patents obtained from the ideas generated with TRIZ
e) Current status of business: big customers, cooperative companies, and R&D grant from a governmental organization
f) Future:

(10) Conclusion: TRIZ has supported us to solve difficult technical problems. The Product Development Process with the full use of TRIZ is expected to be much useful for SMEs to try to convert themselves into product-development companies.

-- Their actual process of developing a new product is described vividly and in detail in the slides. It is most impressive that they have made the progress step by step with a clear logic recorded and presened here. This project was done 3-4 years ago in Nagano Prefecture, not in a metropolitan area. We were surprised and delighted to listen to this presentation, feeling it as an evidence of steady penetration of TRIZ in Japan. 


Presentation Slide  (PDF, 36 slides, 4 slides/page, 523 KB)  Click Here. 



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Last updated on Nov. 29, 2006.     Access point:  Editor: