Patent ID: 8567819

Claim:
A gas generator assembly ( 1 ) for a restraining device, comprising: a gas generator ( 10 ) including, a housing ( 12 ) accommodating a gas generating member, a cup-shaped diffuser ( 16 ) having a gas discharge port ( 14 ) for discharging gas generated from the gas generating member and being attached to one end of the housing ( 12 ), a cup-shaped gas flow controller ( 20 ) assembled with the gas generator ( 10 ), an outer diameter of the diffuser ( 16 ) being smaller than an outer diameter of the housing ( 12 ), a stud bolt ( 18 ) being provided to protrude from a bottom surface of the diffuser ( 16 ), the gas flow controller ( 20 ) being in a cup-like shape having a bottom surface ( 24 ), a circumferential wall portion ( 23 ) and an opening portion ( 22 ), the bottom surface ( 24 ) being provided with a hole ( 28 ) for receiving the stud bolt ( 18 ) of the diffuser ( 16 ) therethrough and a communication hole ( 26 ) for allowing passage of gas flow, the stud bolt ( 18 ) of the diffuser ( 16 ) being put through the hole ( 28 ) of the gas flow controller ( 20 ) from the opening portion ( 22 ), the circumferential wall portion ( 23 ) of the gas flow controller ( 20 ) surrounding the gas discharge port ( 14 ) of the diffuser ( 16 ), the circumferential wall portion ( 23 ) of the gas flow controller ( 20 ) and a circumferential wall portion ( 16 b ) of the diffuser ( 16 ) being spaced therebetween, the gas flow controller ( 20 ) being attached such as to form a gap (G) between a peripheral edge of the opening portion ( 22 ) and the housing ( 12 ), gas, discharged from the gas discharge port ( 14 ) of the gas generator, colliding the circumferential wall portion ( 23 ) of the gas flow controller ( 20 ), the gas flow being divided into both sides in the axial (X) direction to flow out from the gap (G) and the communication hole ( 26 ).