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A Study on Automotive Seat Cushions having Multi-hardness Distribution for the Elderly

Affiliations

  • Department of Mechanical Engineering, Cheonandaero Seobuk-Gu Cheonan Chungnam, 31080, Korea
  • Industrial Machinery Manufacturing, Sinhyu-gil Eumbong-myeon Asan Chungnam, 31408, Korea
  • Kongju National University, Division of Automotive & Mechanical Engineering, Cheonandaero Seobuk-GuCheonan Chungnam, 31080, Korea

Abstract


Objectives: Recent trends show an increase in driving by the elderly and most of them drive with a poor posture. In this study, not only the tests for body pressure but also the tests to identify characteristics of the seat itself were conducted. Methods/Statistical Analysis: Static load tests were conducted first to derive the seat-inherent characteristics such as deflection and hardness, etc. of the seat cushion as a function of loads for the automotive seat, and measurement tests for body pressure were conducted to secure body pressure data of the elderly. Combining the above two test results, final hardness values were obtained through which seat cushion pattern models having 8-hardness distributions could be derived. Findings: As a result, curves and functional equation for the two variables were derived through deflection as a function of measured loads. Also, hardness values at each point of the cushion could be found from the slopes of the curves mentioned, with the appearance of the phenomenon where the slope showed a steep increase in a particular region. This was affirmed to have occurred due to a difference in thicknesses of the cushion. Secondly, concentrated regions of body pressure per subject were affirmed and analyzed in the body pressure tests. By combining two test results, a total of 11 seat cushion pattern models could be derived, of which pattern analyses were conducted for 3 types observed with many personnel. Improvements/Applications: When the cushions are produced on the basis of the above pattern, it is considered possible to more ideally distribute the weight and to improve comfort upon seating compared with the commercial cushions.

Keywords

Body Pressure, Deflection, Hardness, Pattern, Seat Cushion.

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References


  • Kim SY, Jeon OH, Kim KS. A study on the experimental analysis of noise from vehicle power seat slide rail. International Journal of Control and Automation. 2016; 9(3):133–42.
  • Kang JY, Seo KS, Kim KS. Experimental investigation of friction noise in lead screw system under mode-coupling. Journal of Mechanical Science and Technology. 2015; 29(12):5183–8.
  • Lee KS, Sim WK, Kim HLKS. Plastic analysis of headrest frame for automotive seats. International Journal of Applied Engineering Research. 2015; 10(79):722–6.
  • Cho JU, Kim KS. A study on air flow analysis of compressor for air lumber support applied to automobile seat. Indian Journal of Science and Technology. 2015 Sep; 8(24):1–8.
  • Seo CJ. Vehicle detection using images taken by low-altitude unmanned aerial vehicles. Indian Journal of Science and Technology. 2016 Jun; 9(24):1–7.
  • Mergl C, Klendauer M, Mangen C, Bubb H. Predicting long term riding comfort in cars by contact forces between human and seat. SAE Technical Paper; 2015. p. 1–21.
  • Zenk R, Mergl C, Hartung J, Sabbah O, Bubb H. Objectifying the comfort of car seats. SAE Technical Paper; 2006. p. 1–13.
  • Choi YK, Yoo HC. An analysis of sitting strategies based on driving posture and seating pressure distribution. Korean Institute of Industrial Engineers; 2012. p. 887–96.
  • J2896_201201 Motor vehicle seat comfort performance measures. SAE J2896; 2012. p. 1–35.

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