Dual Stage Pretensioning and High Pay-In Capacity Pretensioning Retractor
    1.
    发明申请
    Dual Stage Pretensioning and High Pay-In Capacity Pretensioning Retractor 审中-公开
    双阶段预张紧和高支付能力预张紧牵引器

    公开(公告)号:US20120049500A1

    公开(公告)日:2012-03-01

    申请号:US12872285

    申请日:2010-08-31

    IPC分类号: B60R22/46

    摘要: A seat belt retractor for use in seat belt restraint systems. The retractor incorporates dual rotopretensioner units and adaptive load limiting characteristics. Preferably, the rotopretensioners are positioned on opposite ends of a retractor spool for driving the spool for pretensioning rotation. A first pretensioner may be activated alone to provide pretensioning rotation. In one embodiment of the invention, if the second pretensioner is not activated, the system will be engaged to provide a given belt load limiting characteristic. A second rotopretensioner may be fired either after the first pretensioner is fired to increase pay-in capacity or to activate a different load limiting characteristic for the retractor.

    摘要翻译: 一种用于安全带约束系统的安全带卷收器。 牵开器包含双重旋转陀螺仪单元和自适应负载限制特性。 优选地,旋转拉伸器位于卷收器卷轴的相对端上,用于驱动卷轴以预张紧旋转。 可以单独激活第一预紧器以提供预张紧旋转。 在本发明的一个实施例中,如果第二预紧器没有被激活,系统将被接合以提供给定的带负载限制特性。 在第一预张紧器被点火之后,可以发射第二个陀螺仪,以增加收费能力或激活牵开器的不同负载限制特性。

    Adaptive Load Limiting Retractor
    2.
    发明申请
    Adaptive Load Limiting Retractor 有权
    自适应负载限制牵引器

    公开(公告)号:US20110147509A1

    公开(公告)日:2011-06-23

    申请号:US12644838

    申请日:2009-12-22

    IPC分类号: B60R22/46 B60R22/34 B60R22/36

    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.

    摘要翻译: 自适应负载限制安全带卷收器,特别适用于机动车辆应用。 牵引器通过使用一对内部扭杆元件提供多级负载限制。 扭杆元件以提供期望的碰撞管理特性的方式控制冲击期间安全带织带上的拉力。 牵引器可以通过激活烟火预紧器在高负载限制模式之间切换。 当烟火预紧器未被激活时,牵开器提供低负载水平特性。 预紧器激活将牵开器切换到高负载水平运行状态。 如果在低负载限制条件下主轴转速超过限制水平,则预紧器未启动时,将提供高负载限制水平。 可以提供递减负载限制特征以使负载限制从高负载限制电平开始,然后降低高负载限制电平。

    Adaptive load limiting retractor
    3.
    发明授权
    Adaptive load limiting retractor 有权
    自适应负载限制牵引器

    公开(公告)号:US08220735B2

    公开(公告)日:2012-07-17

    申请号:US12644838

    申请日:2009-12-22

    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.

    摘要翻译: 自适应负载限制安全带卷收器,特别适用于机动车辆应用。 牵引器通过使用一对内部扭杆元件提供多级负载限制。 扭杆元件以提供期望的碰撞管理特性的方式控制冲击期间安全带织带上的拉力。 牵引器可以通过激活烟火预紧器在高负载限制模式之间切换。 当烟火预紧器未被激活时,牵开器提供低负载水平特性。 预紧器激活将牵开器切换到高负载水平运行状态。 如果在低负载限制条件下主轴转速超过限制水平,则预紧器未启动时,将提供高负载限制水平。 可以提供递减负载限制特征以使负载限制从高负载限制电平开始,然后降低高负载限制电平。