Airbag apparatus

• US 7,021,652 B2
• Filed: 02/03/2003
• Issued: 04/04/2006
• Est. Priority Date: 02/25/2002
• Status: Active Grant

• Current Assignee: Joyson Safety Systems Japan GK
• Original Assignee: Takata Corporation (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Kumagai, Masayoshi, Kurimoto, Takeshi, Tanaka, Tadashi, Taketomi, Akifumi
• Primary Examiner(s): CULBRETH, ERIC D
• Application Number:
  US10/356,484
• Publication Number:
  US 20030160433A1
• Time in Patent Office: 1,156 Days
• Field of Search: 280/729, 280/740, 280/741, 280/742, 280/730.2
• US Class Current: 280/729
• CPC Class Codes: B60R 2021/23324 Inner walls crating separate compartments, e.g. communicating with vents
• CPC Class Codes: B60R 2021/2615 for diverting the gas into a plurality of bags
• CPC Class Codes: B60R 21/23138 specially adapted for side protection B60R21/23184, B60R21/232 take precedence
• CPC Class Codes: B60R 21/233 comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other B60R21/232 takes precedence
• 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 airbag apparatus includes an airbag having an interior divided into a plurality of chambers, and a gas generator for inflating the airbag so that gas is guided directly to each chamber from the gas generator. Further, a gas distributor having a plurality of gas outlets is attached to a gas outlet of the gas generator. The gas is supplied to the respective chambers through the gas outlets of the gas distributor.

Claims

1. An airbag apparatus for protecting an occupant in a vehicle, comprising:

an airbag having a plurality of divided chambers therein;

a gas generator attached to the airbag for inflating the same; and

a gas distributor attached to the gas generator for directly supplying gas to each of the plurality of the chambers, said gas distributor covering only a lower part of the gas generator and having one gas outlet at a bottom thereof oriented downwardly to eject the gas downwardly and another gas outlet at a side thereof oriented laterally to eject the gas laterally so that said gas generator supplies the gas to each of the plurality of the chambers through each of the gas outlets of the gas distributor.

2. An airbag apparatus according to claim 1, wherein said gas outlets of the gas distributor have dimensions adjusted according to inflation characteristics of each of the plurality of the chambers.

3. An airbag apparatus according to claim 1, wherein said gas outlets of the gas distributor have different dimensions so that each of the plurality of the chambers has a predetermined internal pressure when the airbag is inflated.

4. An airbag apparatus according to claim 3, wherein said airbag has a partition panel extending substantially horizontally therein to substantially completely divide the airbag into two chambers when the airbag is inflated, each of said gas outlets being connected to the divided chambers.

5. An airbag apparatus according to claim 4, wherein said gas generator is located inside the airbag.

6. An airbag apparatus according to claim 1, wherein said one and another gas outlets have portions branching outwardly from a portion covering the gas generator.

7. An airbag apparatus according to claim 1, wherein said gas outlets are located at least inside the divided chambers.

8. An airbag apparatus according to claim 1, wherein said gas distributor has a cylindrical shape covering only the lower part of the gas generator.

9. An airbag apparatus according to claim 8, wherein said gas distributor is made of cloth.

10. An airbag apparatus according to claim 8, wherein said airbag has a partition panel extending substantially horizontally therein to substantially completely divide the airbag into upper and lower chambers when the airbag is inflated, said gas generator being located inside the upper chamber.

11. An airbag apparatus according to claim 10, wherein said one gas outlet projects from the gas distributor and is located in the lower chamber, and said another gas outlet ejects gas in the upper chamber.