Initiator assembly for air bag inflator
    22.
    发明授权
    Initiator assembly for air bag inflator 失效
    气囊充气机发动机总成

    公开(公告)号:US5558366A

    公开(公告)日:1996-09-24

    申请号:US517740

    申请日:1995-08-22

    IPC分类号: B60R21/26 B60R21/264 F42B3/12

    摘要: An initiator assembly (140) comprises a retainer (46), which can be the cover for an inflator housing (10), and an igniter (142). An opening (85) is formed in the retainer (46). The igniter (142) has a longitudinal axis (143) and comprises a pyrotechnic material (152, 156) on the axis. The pyrotechnic material (152, 156) on ignition exerts a force along the axis (143). The assembly further comprises a preformed compressible plastic coupler plug (148) which includes a plug portion (170) received within the retainer opening (85). The coupler plug (148) comprises locking surfaces (184, 188) which engage the igniter (142) and the retainer (46) and hold the igniter in a spaced relationship with respect to the retainer. The plastic coupler plug (148) further comprises an inwardly extending compressible web (174) integral with the locking surfaces (184, 188). The compressible web (174) provides a seal in the space between the igniter (142) and the retainer (46). On ignition of the igniter pyrotechnic material (152, 156), the resulting axial force in the igniter (142) causes the web (174) to be compressed between opposed surfaces (194, 196) of the igniter and the retainer, respectively, increasing the seal tightness of the compressible web (174).

    摘要翻译: 引发器组件(140)包括保持器(46),其可以是充气器壳体(10)的盖子和点火器(142)。 在保持器(46)中形成有开口(85)。 点火器(142)具有纵向轴线(143)并且包括轴上的烟火材料(152,156)。 点燃时的烟火材料(152,156)沿轴线(143)施加力。 组件还包括预成形的可压缩塑料连接器插头(148),其包括容纳在保持器开口(85)内的插塞部分(170)。 联接器插头(148)包括与点火器(142)和保持器(46)接合并且保持点火器相对于保持器间隔开的锁定表面(184,188)。 塑料联接器插塞148进一步包括与锁定表面184,188成一体的向内延伸的可压缩腹板174。 可压缩腹板(174)在点火器(142)和保持器(46)之间的空间中提供密封。 在点火器烟火材料(152,156)的点火时,点火器(142)中产生的轴向力分别导致腹板(174)在点火器的相对表面(194,196)和保持器之间被压缩 可压缩纤维网(174)的密封紧密度。