Air bag apparatus

• US 20050104350A1
• Filed: 11/18/2004
• Published: 05/19/2005
• Est. Priority Date: 11/18/2003
• Status: Active Grant

• Current Assignee: Nihon Plast Company Limited
• Original Assignee: Nihon Plast Company Limited
• Inventors: Tokita, Takashi, Suzuki, Hidenobu, Ochiai, Mikio
• Granted Patent: US 7,549,673 B2
• Time in Patent Office: Days
• US Class Current: 280/741
• CPC Class Codes: B60R 2021/26058 using a combination of inflators
• CPC Class Codes: B60R 21/2165 characterised by a tear line for defining a deployment opening
• CPC Class Codes: B60R 21/26 characterised by the inflation fluid source or means to control inflation fluid flow arrangement or mounting thereof to the vehicle B60R21/20; blasting cartridges for producing gas under pressure in general F42B3/04; initiators or igniters therefor F42B3/10

Abstract

An air bag apparatus for a vehicle is provided with an air bag configured to inflate and deploy with inflow of a gas; a first inflator configured to supply the gas to the air bag having a first pressure-time property; and a second inflator configured to supply the gas to the air bag having a second pressure-time property, the second pressure-time property differing from the first pressure-time property.

Claims

1. An air bag apparatus for a vehicle, comprising:

an air bag configured to inflate and deploy with inflow of a gas;

a first inflator configured to supply the gas to the air bag having a first pressure-time property; and

a second inflator configured to supply the gas to the air bag having a second pressure-time property, the second pressure-time property differing from the first pressure-time property.

2. The air bag apparatus of claim 1, wherein the second pressure-time property has a more quick increase in a pressure change than the first pressure-time property.

3. The air bag apparatus of claim 2, further comprising:

a control device configured to activate the first inflator and activate the second inflator with a controllable delay behind the first inflator.

4. The air bag apparatus of claim 2, further comprising:

a control device configured to activate the second inflator and activate the first inflator with a controllable delay behind the second inflator.

5. The air bag apparatus of claim 3, wherein the first inflator and the second inflator are disposed adjacent to each other along a line intersecting with a moving direction of the vehicle and inject the gas in directions intersecting with the moving direction;

and the first inflator is disposed beside a central line of the vehicle.

6. The air bag apparatus of claim 2, further comprising:

a sensor configured to sense collision of the vehicle; and

a control device configured to select an activation mode from a group of a simultaneous activation mode, a first delay-intervening mode and a second delay-intervening mode depending on an information given by the sensor and activate the first inflator and the second inflator in the selected activation mode.