정보저장시스템학회논문집 (Transactions of the Society of Information Storage Systems)

  • 제9권2호
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  • Pages.56-61
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  • 2013
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  • 1738-6845(pISSN)
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  • 2288-2022(eISSN)
정보저장시스템학회 (The Society of Information Storage Systems)
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유한요소해석과 낙하충격 실험을 통한 자동초점 액추에이터의 내충격 특성 향상

Shock Resistance Characteristic of Auto Focus Actuator using Finite Element Method and Drop Impact Test

  • 투고 : 2013.09.16
  • 심사 : 2013.09.24
  • 발행 : 2013.09.25
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초록

The recent increased use of mobile phone has resulted in a technical focusing on reliability issues related to drop performance. Since mobile phone may be dropped several times during their use, it is required to survive common drop accidents. The plastic injection parts such as base stopper and carrier in the encoder type actuator can be broken easily in the actual reliability test of 1.5m free drop. So, we analyzed the shock resistance characteristics of auto focus actuator with variables in the material properties using finite element method. By applying the new resin materials, we can decrease the breakage of plastic injection parts and improve the reliability of mobile phone.

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참고문헌

  1. Myung-Jin Chung, 2006, "Development of Compact auto Focus Actuator for Camera Phone by Applying New Electromagnetic Configuration", J.KSME, Vol.20, pp.2087-2093 https://doi.org/10.1007/BF02916325
  2. Chien-Sheng Liu, Psang-Dain Lin, Po-Heng Lin, Shun-Sheng Ke, Yu-Hsiu Chang, and Ji-Bin Horng, "Design and Characterization of Miniature Auto-Focusing Voice Coil Motor Actuator for Cell Phone Camera Applications", IEEE Trans. Magn., Vol.45, No.1, pp.155-159
  3. Hyun-Phill Ko, Hoseop Jeong, and Burhanettin Koc, 2009, "Piezoelectric Actuator for Mobile Auto Focus Camera Applications", J. Electroceram., Vol.23, pp.530-535 https://doi.org/10.1007/s10832-008-9529-8
  4. Lim, C. T., and Low, Y. J., 2002, "Investigating the Drop Impact of Portable Electronic Products", Proceedings of the 52nd Electronic Components and Technology Conference, San Diego, CA, pp. 1270-1274
  5. Zhou, C. Y., Yu, T. X., and Lee, R. S. W., 2008, "Drop/Impact Tests and Analysis of Typical Portable Electronic Devices", J. International of Mechanical Sciences, Vol.50, No.5, pp. 905-917 https://doi.org/10.1016/j.ijmecsci.2007.09.012
  6. Jae-Ung Cho, Byoung-Sang Min, Moon-Sik Han, 2009, "Impact Analysis According to Material of Hand Phone", J. Korean Society of Manufacturing Process Engineers, Vol.8, No.2, pp.69-79