| 摘要 |
An occupant restraint system includes an inflator which communicates with a manifold. The manifold communicates with one open end of a generally elongated hollow cylindrical diffuser. The diffuser extends between the end plates of a reaction plate assembly and the other closed end of the diffuser is secured to one of the end plates. The diffuser includes two axially extending diametrically opposite flats and two radially spaced rows of slots, one row being in one flat and being divided into spaced groups, and the other row being between the flats. A torso cushion surrounds the diffuser and is fed from the other row of slots. A knee cushion fits within the torso cushion and has slits which are indexed in a predetermined position transversley of respective groups of slots. A planar seal covers the one row of slots and has spaced pairs of slits. The number of pairs is equal to the number of groups of slots. The seal is indexed to the diffuser, but regardless of which side of the seal covers the one row, at least one of the slits of each pair traverses a respective group of diffuser slots and is aligned with a respective cushion slit. An elongated retainer plate within the knee cushion includes louvered openings equal in number to the groups of slots. Fixed studs extending from the plate, one to each side of each such opening, extend through respective aligned openings in the cushion, seal, and diffuser to index the cushion and seal slits to each other and to the groups of respective slots of the diffuser. The studs are threaded to tapped posts which extend through openings in the other flat of the diffuser and engage the inside of the one flat to prevent deformation of the diffuser when the studs are secured to the posts. The openings in the diffuser are irregularly spaced to ensure that the bracket can be installed only one way and that the louvers of the bracket are correctly positioned with respect to the cushion slits. The posts in the diffuser act as baffles and create turbulence in the flow of pressure fluid through the diffuser.
|
