한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제18권2호
  • /
  • Pages.1-6
  • /
  • 2010
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  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

자동차용 프리텐셔너의 성능향상을 위한 실험적 연구

Experimental Study to Improve the Performance of the Pretensioner for a Passenger Vehicle

  • Jung, Sung-Pil (Graduate School of Mechanical Engineering, Ajou University) ;
  • Park, Tae-Won (Department of Mechanical Engineering, Ajou University) ;
  • Song, Taeck-Rim (R&D Team, Technology & Quality Department, DBI Inc.)
  • 투고 : 2009.02.17
  • 심사 : 2009.07.17
  • 발행 : 2010.03.01
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초록

This study presents the practical design modification to improve the retracting performance of the pyro-typed high power pretensioner. 3 components of the pretensioner are redesigned and the usefulness of the design modification is verified by the experiment. During the pretensioning process, the gas blast generated from the gunpowder is transferred to the rack-pinion gear through the manifold. The rack-pinion gear is connected with the spool where the webbing is rolled up. According to the rotation of the pinion, the spool is turned and the webbing is winded. To help the gas blast flow well, the shape of the inner cross section of the manifold is changed. The spur gear design program is developed and used to find the best combination of the rack-pinion gear pair to increase the power transmission efficiency. The pinion guide is installed on the spool to prevent the vibration of the pinion. As a result of the experiment, the amount of the web retraction length is increased when every single design modification is applied. Therefore, the retracting performance of the pretensioner is considered to be improved if the presented design modifications are applied.

키워드

참고문헌

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