초록 ▼

An air bag device that includes an air bag cushion, a diffuser canister, and a gas generation inflator. The diffuser canister is attached to the air bag cushion and has walls configured to define an interior space therein. The walls of the diffuser canister have an interior surface, an exterior surf

An air bag device that includes an air bag cushion, a diffuser canister, and a gas generation inflator. The diffuser canister is attached to the air bag cushion and has walls configured to define an interior space therein. The walls of the diffuser canister have an interior surface, an exterior surface, and a wall thickness t. At least one of the walls has an aperture formed therethrough in communication with the interior of the air bag cushion. The gas generation inflator is configured to rapidly create a gas that exits the diffuser canister through the aperture so as to fill the air bag cushion. The aperture is defined by an edge extending between the interior and said exterior surfaces of the wall that is configured to diffuse the gas exiting the diffuser canister through the aperture. The edge of the aperture is configured such that the cross-sectional area of the aperture that is proximate to the exterior surface of the wall is larger than the cross-sectional area of the aperture proximate to the interior surface of wall. The edge includes an angled portion configured such that opposing sides of the aperture have an angle .alpha. therebetween in the range of about 20 degrees to about 145 degrees. The aperture has a diameter d1 proximate to the interior surface of the wall and is configured so that the diameter d1 and wall thickness t have a ratio d1 to tin the range of about 0.5 to about 4. An alternate embodiment of the air bag device comprises an aperture defined by an edge that is configured so that the cross-section of aperture is non-smooth and causes turbulence in the gas stream.

대표청구항 ▼

1. An air bag device comprising: (a) an air bag cushion having a gas inlet opening; (b) a diffuser canister attached to said gas inlet opening of said air bag cushions, said diffuser canister having a plurality of walls configured to define an interior space therein, each of said plurality of walls

1. An air bag device comprising: (a) an air bag cushion having a gas inlet opening; (b) a diffuser canister attached to said gas inlet opening of said air bag cushions, said diffuser canister having a plurality of walls configured to define an interior space therein, each of said plurality of walls having an interior surface, an exterior surface, and a wall thickness t, one of said plurality of walls having an aperture formed therethrough in communication with the interior of said air bag cushion, said aperture being defined by an edge extending between said interior surfaceand said exterior surface of said wall wherein diameter d1 of said aperture and said wall thickness t having a ratio of diameter d1 to wall thickness tin the range of about 0.5 to about 4.0; (c) a gas generation inflator configured to rapidly create a gas within said diffuser canister, said gas exiting said diffuser canister through said aperture so as to fill said air bag cushion; and (d) dispersing means for diffusing said gas exiting said diffuser canister through said aperture, said dispersing means comprising an edge defining the perimeter of said aperture, said edge being configured such that the diameter of said aperture proximate to said exterior surface of said wall is larger than the diameter d1 of said aperture proximate to said interior surface of said wall.