发明授权
- 专利标题: Adaptive load limiting retractor
- 专利标题(中): 自适应负载限制牵引器
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申请号: US12644838申请日: 2009-12-22
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公开(公告)号: US08220735B2公开(公告)日: 2012-07-17
- 发明人: Bin Wang , Frank Kiiskila , Daniel Webb , Jon E. Burrow , Kurt W. Schulz , Chad Moore , Gerald Keller
- 申请人: Bin Wang , Frank Kiiskila , Daniel Webb , Jon E. Burrow , Kurt W. Schulz , Chad Moore , Gerald Keller
- 申请人地址: US UT Ogden
- 专利权人: Autoliv ASP, Inc.
- 当前专利权人: Autoliv ASP, Inc.
- 当前专利权人地址: US UT Ogden
- 代理机构: Brinks, Hofer, Gilson & Lione
- 代理商 Sally J. Brown
- 主分类号: B65H75/48
- IPC分类号: B65H75/48
摘要:
An adaptive load limiting seat belt retractor particularly adapted for motor vehicle applications. The retractor provides multiple levels of load limiting through the use of a pair of internal torsion bar elements. The torsion bar elements control the tension force on the seat belt webbing during an impact in a manner which provides desirable crash management characteristics. The retractor can be switched between high and low load limiting modes through activation of a pyrotechnic pretensioner. When the pyrotechnic pretensioner is not activated, the retractor provides a low load level characteristic. Pretensioner activation switches the retractor into a high load level operating condition. A high load limiting level is provided when the pretensioner is not activated if the spindle rotation exceeds a limited level in the low load limiting condition. A degressive load limiting feature may be provided to cause load limiting to begin at a higher level than the high load limiting level, and then step down the high load limiting level.
公开/授权文献
- US20110147509A1 Adaptive Load Limiting Retractor 公开/授权日:2011-06-23