Airbag baffle mount

• US 5,860,672 A
• Filed: 11/25/1996
• Issued: 01/19/1999
• Est. Priority Date: 11/25/1996
• Status: Expired due to Fees

• Current Assignee: Morton International Incorporated (Autoliv Incorporated)
• Original Assignee: Morton International Incorporated (Autoliv Incorporated)
• Inventors: Petersen, Kurt L.
• Primary Examiner(s): Johnson, Brian L.
• Assistant Examiner(s): Fischer, Andrew J.
• Application Number:
  US08/753,357
• Time in Patent Office: 785 Days
• Field of Search: 280/728.2, 280/740, 280/742, 280/736
• US Class Current: 280/728.2
• CPC Class Codes: B60R 21/217 Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
• 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
• CPC Class Codes: B60R 21/261 with means other than bag structure to diffuse or guide inflation fluid

Abstract

An airbag baffle mount for mounting an airbag cushion to an airbag module and for deflecting hot inflation gas away from a throat of the airbag cushion. The airbag baffle mount includes a generally flat retainer ring for securing the collar of the airbag cushion around an inflator of the airbag module that produces and expels the inflation gas from a plurality of inflation ports for inflating the airbag cushion upon a vehicle collision. The airbag baffle mount also includes a continuous deflection baffle extending upwardly from the retainer ring and positioned spaced-apart from the inflator, between the plurality of inflation ports of the inflator and the surrounding throat of the airbag cushion. The deflection baffle slopes substantially inwardly for deflecting hot inflation gas and hot particles downwardly generally towards the retainer ring to thereby substantially prevent the throat of the airbag cushion from being burned by the hot inflation gas and decrease the release of hot particles into the main part of the airbag cushion.

Claims

1. An airbag baffle mount for mounting an airbag cushion to an airbag module also including an inflator having a sidewall defining a plurality of spaced-apart inflation ports and a module baseplate surrounding the inflator sidewall below the plurality of inflation ports, the airbag cushion including a throat surrounding the inflator sidewall and terminating in a collar seated on the module baseplate so that inflation gas exiting the inflation ports of the inflator will inflate the airbag cushion, the airbag baffle mount comprising:

a retainer ring receivable between the inflator sidewall and the throat of the airbag cushion and over the collar of the airbag cushion, the retainer ring securable to the module baseplate with the collar of the airbag cushion clamped therebetween; and

a continuous deflection baffle extending upwardly from the retainer ring and when the retainer ring is secured to the baseplate, positioned between the plurality of inflation ports of the inflator sidewall and the throat of the airbag cushion, the deflection baffle having a distal edge spaced-apart from the inflator sidewall and positioned between a top of the inflator sidewall and the plurality of inflation ports, the deflection baffle sloping substantially inwardly for deflecting hot inflation gas and solid particles exiting the plurality of inflation ports downwardly generally towards the retainer ring, to thereby substantially prevent the throat of the airbag cushion from being burned and substantially prevent the hot solid particles from being distributed into the airbag cushion.

2. An airbag baffle mount according to claim 1 wherein the retainer ring is generally flat and the deflection baffle slopes substantially inwardly at an angle of between about forty-five and about eighty degrees with respect to the retainer ring.

3. An airbag baffle mount according to claim 2 wherein the deflection baffle slopes substantially inwardly at an angle of about sixty degrees with respect to the retainer ring.

4. An airbag baffle mount according to claim 3 further comprising a continuous support wall extending upwardly from a top surface of the retainer ring adjacent an outer edge of the retainer ring, with the deflection baffle sloping inwardly from the support wall.

5. An airbag baffle mount according to claim 4 wherein the support wall slopes substantially outwardly.

6. An airbag baffle mount according to claim 5 further comprising an inner wall extending upwardly from the top surface of the retainer ring adjacent an inner edge of the retainer ring.

7. An airbag baffle mount according to claim 6 wherein the retainer ring defines a plurality of spaced-apart fastener receiving openings for receiving a plurality of fasteners extending through the collar of the airbag cushion and the module baseplate to secure the retainer ring to the module baseplate.

8. An airbag module comprising:

A) an inflator having a sidewall defining a plurality of spaced-apart inflation ports;

B) a module baseplate surrounding the inflator sidewall below the plurality of inflation ports;

C) an airbag cushion including a throat surrounding the inflator sidewall and terminating in a collar seated on the module baseplate so that inflation gas exiting the inflation ports will inflate the airbag cushion; and

D) an airbag baffle mount including,

a retainer ring received between the inflator sidewall and the throat of the airbag cushion and positioned over the collar of the airbag cushion, the retainer ring fastened to the module baseplate with the collar of the airbag cushion secured therebetween, and

a continuous deflection baffle extending upwardly from the retainer ring and positioned between the plurality of inflation ports of the inflator sidewall and the throat of the airbag cushion, the deflection baffle having a distal edge spaced-apart from the inflator sidewall and positioned between a top of the inflator sidewall and the plurality of inflation ports, the deflection baffle sloping substantially inwardly towards the inflator to deflect hot inflation gas and solid particles exiting the plurality of inflation ports generally downwardly towards the retainer ring, thereby substantially preventing the throat of the airbag cushion from being burned and substantially preventing the hot solid particles from being distributed into the airbag cushion.

9. An airbag module according to claim 8 wherein the retainer ring is generally flat and the deflection baffle slopes substantially inwardly towards the inflator at an angle of between about forty-five and about eighty degrees with respect to the retainer ring.

10. An airbag module according to claim 9 wherein the deflection baffle slopes substantially inwardly towards the inflator at an angle of about sixty degrees with respect to the retainer ring.

11. An airbag module according to claim 10 wherein the airbag baffle mount further includes a continuous support wall extending upwardly from a top surface of the retainer ring adjacent an outer edge of the retainer ring to below the plurality of the inflation ports of the inflator, the deflection baffle sloping inwardly from the support wall.

12. An airbag module according to claim 11 wherein the support wall of the airbag baffle mount slopes outwardly away from the inflator.

13. An airbag module according to claim 12 wherein the airbag baffle mount further includes an inner wall extending upwardly from the top surface of the retainer ring adjacent an inner edge of the retainer ring to below the plurality of inflation ports of the inflator.

14. An airbag module according to claim 13 wherein the retainer ring of the airbag baffle mount defines a plurality of spaced-apart fastener receiving openings and the retainer ring is fastened to the module baseplate by a plurality of fasteners extending through the plurality of fastener receiving openings of the retainer ring and through the collar of the airbag cushion and the module baseplate.