INFLATOR

• US 20070257477A1
• Filed: 04/26/2007
• Published: 11/08/2007
• Est. Priority Date: 04/28/2006
• Status: Active Grant

• Current Assignee: Daicel Chemical Industries Limited
• Original Assignee: Daicel Chemical Industries Limited
• Inventors: Nakayasu, Masayuki, Ohji, Nobuyuki
• Granted Patent: US 7,651,128 B2
• Time in Patent Office: Days
• US Class Current: 280/741
• CPC Class Codes: B60R 2021/2633 with a plurality of inflation levels
• CPC Class Codes: B60R 2021/2648 comprising a plurality of combustion chambers or sub-chambers
• CPC Class Codes: B60R 21/264 using instantaneous generation of gas, e.g. pyrotechnic B60R21/268 takes precedence

Abstract

The present invention provides an inflator including a housing having a gas discharge port, an ignition device and a gas generating agent accommodated inside the housing, and a collision member for receiving collision of a combustion product(s) which is generated by the activation of the ignition device, the collision member being provided in a position directly facing an ejecting direction of the combustion products.

Claims

1. An inflator comprising

a housing having a gas discharge port,

an ignition device and a gas generating agent accommodated inside the housing, and

a collision member for receiving collision of a combustion product(s) which is generated by the activation of the ignition device, the collision member being provided in a position directly facing an ejecting direction of the combustion products.

3. The inflator according to claim 1 or 2, wherein the combustion products generated by the actuation of the ignition device are discharged only in one direction, or the gas ejection opening is opened only in one direction.

4. The inflator according to claim 1 or 2, wherein the collision member has a curved surface and the curved surface is directly opposite to the discharge direction of the combustion products or the gas ejection opening.

2. An inflator comprising

a housing having a gas discharge port,

a combustion chamber cup member, which accommodates at least an ignition device, being disposed inside the housing,

the combustion chamber cup member having a gas ejection opening for ejecting a combustion product(s) generated by the activation of the ignition device,

a collision member, for receiving collision of the combustion products, being provided in a position directly facing the gas ejection opening.

5. An inflator comprising

a housing having a gas discharge port,

a first combustion chamber and a second combustion chamber, being defined inside the housing,

a first ignition device and a first gas generating agent accommodated inside the first combustion chamber, a combustion product(s) generated by the activation of the first ignition device being ejected only in one direction,

a second combustion cup member disposed inside the housing and separating the second combustion chamber from the first combustion chamber, the second combustion chamber cup member accommodating a second gas generating agent and a second ignition device,

the second combustion chamber cup member being disposed in a position directly facing the ejecting direction of the combustion products, and a circumferential surface of the second combustion chamber cup member serving as a collision member for receiving collision of the combustion products.

6. The inflator according to claim 5, wherein at least an ignition portion of the ignition device is surrounded by an ignition device cup member in the first combustion chamber, and the ignition device cup member has a gas ejection opening that is open only in one direction to discharge the combustion products.