公开(公告)号：US06168200A

公开(公告)日：2001-01-02

申请号：US09201789

申请日：1998-12-01

申请人： Darton E. Greist, III ,  Scott Joseph DiGangi ,  Richard K. Robbins

发明人： Darton E. Greist, III ,  Scott Joseph DiGangi ,  Richard K. Robbins

IPC分类号： B60R2126

CPC分类号： B60R21/272 ,  B60R2021/2633

摘要： A dual level inflator is provided for creating at least two different rates and levels of air bag inflation while optimizing cost effectiveness, size, safety and performance. The dual level inflator includes a unitized gas generator canister assembly including two canisters of gas generant material connected to a common base and positioned in a chamber formed in an inflator outer housing. The unitized assembly is easily transportable and mountable on the outer housing. Each canister of the unitized assembly includes apertures permitting direct communication between each canister cavity and the chamber of the outer housing. As a result, generant material positioned in each canister is directly exposed to the conditions in the outer housing chamber. The present assembly is advantageous in that it maximizes the internal volume available to the stored gas and, after the ignition of one canister and the inflation of the air bag, the remaining canister may be ignited without reinflating the air bag due to the previous depressurization of the chamber in combination with the selection of a generant material incapable of effectively burning in a low pressure environment, i.e. the directly connected chamber. The present dual inflator also includes seal means to prevent inadvertent ignition, and an arrangement by which the plurality of apertures formed in one canister are positioned relative to the apertures in the other canister to cause the gas flowing from one set of apertures to be sufficiently cooled by the inert gas in the chamber prior to reaching the apertures of the other canister thereby preventing inadvertent thermally induced ignition of the generant material in the remaining unfired canister.

摘要翻译： 提供双级充气机，用于在优化成本效益，尺寸，安全性和性能的同时，产生至少两种不同速率和级别的气囊充气。 双级充气机包括一个单元化的气体发生器罐组件，其包括连接到公共基座并且定位在形成在充气器外壳中的腔室中的两个气体发生器的罐。 组合式组件易于运输和安装在外壳上。 组合组件的每个罐包括允许每个罐腔和外壳的室之间直接连通的孔。 结果，定位在每个罐中的发生剂​​材料直接暴露于外部容纳室中的条件。 本发明的组件的优点在于，其使存储的气体可用的内部容积最大化，并且在一个罐的点燃和气囊的充气之后，剩余的罐可能被点燃而不会由于先前的减压而使气袋重新充气 该室与选择不能在低压环境（即直接连接的室）中有效燃烧的发电材料相结合。 本双重充气机还包括防止意外点燃的密封装置，以及形成在一个罐中的多个孔相对于另一个罐中的孔定位的装置，以使从一组孔流出的气体被充分冷却 通过室内的惰性气体到达另一个罐的孔之前，从而防止在剩余的未燃烧罐中发生物质的无意的热诱导点火。