Airbag module assembly with cross-car gas diffusion

• US 9,440,614 B2
• Filed: 01/30/2015
• Issued: 09/13/2016
• Est. Priority Date: 01/30/2015
• Status: Active Grant

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Inventors: Williams, Jeffrey D.
• Primary Examiner(s): ENGLISH, JAMES A
• Application Number:
  US14/610,523
• Publication Number:
  US 20160221530A1
• Time in Patent Office: 592 Days
• US Class Current: 1/1
• CPC Class Codes: B60R 2021/26076 characterised by casing
• CPC Class Codes: B60R 21/261 with means other than bag structure to diffuse or guide inflation fluid
• CPC Class Codes: B60R 21/264 using instantaneous generation of gas, e.g. pyrotechnic B60R21/268 takes precedence

Abstract

An airbag module assembly includes a module housing that defines a storage chamber. A thrust neutral inflator device is at least in part disposed within the storage chamber. The inflator device releases airbag inflation gas within the storage chamber in a cross-car manner. In specific embodiments, the cross-car release of the airbag inflation gas involves substantially all the airbag inflation gas being released at an angle of no more than ±60° and preferably at an angle of no more than ±50° from horizontal when viewed in a top planar view of the inflator device disposed within the housing.

Claims

1. An airbag module assembly, the assembly comprising:

a module housing defining a storage chamber, and

a thrust neutral inflator device at least in part disposed within the storage chamber, the inflator device including an inflator body and having a diffuser extending from the body, wherein airbag inflation gas is cross-car released from the inflator device within the storage chamber, wherein the cross-car release of the airbag inflation gas comprises substantially all the airbag inflation gas being released at an angle of no more than ±

60°

from horizontal when viewed in a top planar view of the inflator device disposed within the housing.

2. The airbag module assembly of claim 1 wherein the cross-car release of the airbag inflation gas comprises substantially all the airbag inflation gas being released at an angle of no more than ±

50°

from horizontal when viewed in a top planar view of the inflator device disposed within the housing.

3. The airbag module assembly of claim 1 wherein the diffuser includes gas discharge outlets disposed on opposed first and second sides thereof.

4. The airbag module assembly of claim 1 wherein the module housing comprises first and second pairs of opposed edges, the first pair of opposed edges including a car-forward edge and an opposed car-rearward edge, the second pair of opposed edges including a first lateral side edge and an opposed second lateral side edge.

5. The airbag module assembly of claim 1 wherein the inflator body is ellipsoid-shaped and the diffuser is central axis-extending from the inflator body.

6. The airbag module assembly of claim 5 wherein the ellipsoid-shaped inflator body has an oblate spheroid shape.

7. The airbag module assembly of claim 5 wherein the diffuser has inflation gas discharge openings to release inflation gas within the storage chamber at an angle of no more than ±

60°

from horizontal when viewed in a top planar view of the diffuser within the housing.

8. The airbag module assembly of claim 7 wherein the module housing comprises first and second pairs of opposed edges, the first pair of opposed edges including a car-forward edge and an opposed car-rearward edge, the second pair of opposed edges including a first lateral side edge and an opposed second lateral side edge.

9. The airbag module assembly of claim 8 wherein the diffuser inflation gas discharge openings release inflation gas within the storage chamber at an angle of no more than ±

50°

from horizontal when viewed in a top planar view of the diffuser within the housing.

10. An airbag module assembly, the assembly comprising:

a module housing defining a storage chamber;

an inflator device at least in part disposed within the storage chamber, the inflator device including an inflator body and having a diffuser extending from the body, the diffuser in inflation gas flow communication with the inflator body, the inflator device to provide inflation gas to inflate an associated vehicle occupant inflatable restraint device; and

the diffuser including inflation gas discharge openings on first and second opposed sides thereof to thrust neutrally discharge at least 90% of the inflation gas exiting from the diffuser cross-car within the storage chamber.

11. The airbag module assembly of claim 10 wherein the cross-car release of the airbag inflation gas comprises substantially all the airbag inflation gas being released at an angle of no more than ±

60°

from horizontal when viewed in a top planar view of the inflator device disposed within the housing.

12. The airbag module assembly of claim 10 wherein the cross-car release of the airbag inflation gas comprises substantially all the airbag inflation gas being released at an angle of no more than ±

50°

from horizontal when viewed in a top planar view of the inflator device disposed within the housing.

13. The airbag module assembly of claim 10 wherein the module housing comprises first and second pairs of opposed edges, the first pair of opposed edges including a car-forward edge and an opposed car-rearward edge, the second pair of opposed edges including a first lateral side edge and an opposed second lateral side edge.

14. The airbag module assembly of claim 10 wherein the inflator body is ellipsoid-shaped and the diffuser is central axis-extending from the inflator body.

15. An airbag module assembly, the assembly comprising:

a module housing defining a storage chamber, the module housing having first and second pairs of opposed edges, the first pair of opposed edges including a car-forward edge and an opposed car-rearward edge, the second pair of opposed edges including a first lateral side edge and an opposed second lateral side edge;

an inflator device at least in part disposed within the storage chamber, the inflator device including an inflator body and having a diffuser extending from the body, the diffuser in inflation gas flow communication with the inflator body, the inflator device to provide inflation gas to inflate an associated vehicle occupant inflatable restraint device; and

the diffuser centrally positioned between both the first and second pairs of housing opposed edges, the diffuser having inflation gas discharge openings to release inflation gas within the storage chamber at an angle of no more than ±

60°

from horizontal when viewed in a top planar view of the diffuser within the housing.

16. The airbag module assembly of claim 15 wherein the inflation gas discharge openings of the diffuser release inflation gas within the storage chamber at an angle of no more than ±

50°

from horizontal when viewed in a top planar view of the diffuser within the housing.

17. The airbag module assembly of claim 15 wherein at least 90% of the inflation gas exiting from the diffuser is cross-car thrust neutrally discharged at within the storage chamber.

18. The airbag module assembly of claim 15 wherein the inflator body is ellipsoid-shaped and the diffuser is central axis-extending from the inflator body.