Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Study on the Profile of Body Spring in the Flat Type Wiper Blade for an Intended Contact Pressure Distribution

임의의 누름압 분포를 나타내는 플랫형 블레이드 스프링 레일의 곡면 형상

  • Received : 2012.02.20
  • Accepted : 2012.08.22
  • Published : 2013.03.01
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Abstract

An analytical procedure to determine a proper profile of the spring rail that generates intended contact pressure distribution in the flat wiper blade is introduced. The flat wiper blade is one piece blade and subjected to pressing force at a center point. In this type of blade, contact pressure distribution in the tip of rubber strip is determined by the pressing force, the initial profile of the blade before contact and bending stiffness of the blade. Experimentally obtained bending stiffness of the blade assembly is almost identical to that of the spring rail. Principle of reciprocity has been used to define the initial profile of spring rail from the deformed profile that is assumed to be identical to the windshield glass profile. The procedure has been verified experimentally by measuring the contact pressure of the blade assembled with the spring rail designed by the procedure proposed here. Measured contact pressure distributions of the blades show good agreements with intended distributions over the entire blade span. Consequently, it can be concluded that proposed procedure has relatively good accuracy in developing the spring rail for flat blade having a specific contact pressure distribution.

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References

  1. R. Grenouillat and C. Leblanc, "Simulation of Mechanical Pressure in a Rubber-Glass Contact for Wiper System," SAE 2002-01-0798, 2002.
  2. B. S. Lee and J.-Y. Shin, "Contact Pressure Analysis of a Windshield Wiperblade," Transactions of KSAE, Vol.14, No.3, pp.51-57, 2006.
  3. Y. S. Yoon and C. Kim, "The Curve Equation of a Flat Wiper Spring Rail Inducing Uniformly Distributed Loads," KSAE Spring Conference Proceedings, pp.1303-1307, 2006.
  4. Y. S. Yoo and T. H. Kim, "Development of an Optimum Curve of an One-point Supported Flat Wiper Spring Rail with Uniform Pressure," KSAE Spring Conference Proceedings, pp.8-12, 2007.
  5. Y. S. Yoon and C. Kim, "The Curve Equation of a Flat Wiper Spring Rail Inducing Uniformly Distributed Loads," Transactions of KSAE, Vol.18, No.4, pp.79-83, 2010.
  6. W. H. Kim, T. W. Park, J. B. Chai, S. P. Jung and W. S. Chung, "Estimation of Contact Pressure of a Flat Wiper Blade by Dynamic Analysis," Transactions of KSME(A), Vol.34, No.7, pp.837-842, 2010. https://doi.org/10.3795/KSME-A.2010.34.7.837
  7. T. Kotlarski, Wiper Blade for Motor Vehicle Windows, United State Patent US6973698 B1, 2005.
  8. A. F. Bower, Applied Mechanics of Solids, CRC Press, USA, 2009.
  9. D. H. Kim, S. H. Park, Y. H. Kim and J. H. Kim, "Contact Pressure Measurement of Windshield Wiper Blade Using Piezoelectric Sensor," KSAE Spring Conference Proceedings, pp.463-467, 2000.
  10. Y. H. Kim and S. H. Park, "Contact Pressure Measurement of Development and Application System for Distribution," Transactions of KSAE, Vol.11, No.6, pp.134-140, 2003.