Multi-directional air bag module door attachment

• US 5,439,246 A
• Filed: 02/07/1994
• Issued: 08/08/1995
• Est. Priority Date: 02/07/1994
• Status: Expired due to Fees

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Morton International Incorporated (Autoliv Incorporated)
• Inventors: Scharret, Jeffery L., Thompson, Mark A., Green, David J., Ravenberg, Michael J., Davis, Terry R., Gans, Russell S.
• Primary Examiner(s): Rice, Kenneth R.
• Application Number:
  US08/192,919
• Time in Patent Office: 547 Days
• Field of Search: 280/728 A, 280/728 B, 280/732
• US Class Current: 280/728.3
• CPC Class Codes: B60R 2021/2172 the cover being connected to the surrounding part and to the module, e.g. floating mounts
• CPC Class Codes: B60R 21/215 characterised by the covers for the inflatable member B60R21/2176 takes precedence
• CPC Class Codes: B60R 21/216 comprising tether means for limitation of cover motion during deployment
• CPC Class Codes: B60R 21/2171 specially adapted for elongated cylindrical or bottle-like inflators with a symmetry axis perpendicular to the main direction of bag deployment, e.g. extruded reaction canisters B60R21/2176 takes precedence

Abstract

An air bag module door and installation method whereby an air bag module door is joined to an air bag module unit by of one or more flexible legs. The flexible leg(s) permit the so joined module door to be desirably positioned within an opening in a vehicular interior trim. Once so positioned, the module unit is rigidly secured to the vehicle.

Claims

1. An air bag module door for an air bag module unit, said module door comprising:

a face portion to provide closure to an opening in an interior trim structure of a vehicle wherethrough an air bag is deployable, said face portion having an upper surface, a lower surface and a peripheral surface between the upper and lower surfaces, said module door having at least a portion of the peripheral surface supported by an underlying portion of the interior trim structure, and

at least one first flexible leg joined at a first end to said face portion and joinable at a second end to a corresponding mounting section of the module unit, said flexible leg permitting said face portion to be positioned about the air bag deployment opening as the module unit is secured to the vehicle and wherein said flexible leg becomes tensioned as said module door is fixed in position relative to the air bag deployment opening.

2. The air bag module door of claim 1 wherein said first flexible leg is integral to said face portion.

3. The air bag module door of claim 1 wherein said module unit includes a reaction canister comprising the corresponding mounting section comprising a female form slide-in connector to which the second end of said first leg is joinable and wherein said second end comprises a mating male form slide-in connector for slide-in fastenerless connection with the female form slide-in connector of the reaction canister.

4. The air bag module door of claim 1 wherein said face portion additionally comprises a tear way adapted to tear under the influence of inflating of the air bag to define at least one air bag release door.

5. The air bag module door of claim 1 wherein said peripheral surface includes first and second opposed longitudinal sides with said first flexible leg joined to said face portion at the lower surface and adjacent the first opposed longitudinal side, said module door additionally comprising:

at least one second flexible leg joined at a first end to the lower surface of the face portion and adjacent the second opposed longitudinal side and joinable at a second end to a corresponding mounting section of the module unit, said second flexible leg cooperating with said first flexible leg to permit said face portion to be positioned about the air bag deployment opening as the module unit is secured to the vehicle.

6. The air bag module door of claim 5 wherein said first leg includes at least one tear way intermediate said first and second ends, said tear way adapted to tear under the influence of inflating of the air bag whereby at least the first opposed longitudinal side is decoupled from the mounting section to permit the air bag to deploy through the opening.

7. The air bag module door of claim 6 wherein said module unit includes a reaction canister comprising the corresponding mounting sections to which the second ends of said first and second legs are joinable and wherein said second leg includes at least one tear way intermediate said first and second ends, said tear way adapted to tear under the influence of inflating of the air bag whereby the second opposed longitudinal side is also decoupled to permit the air bag to deploy through the opening, said module door having a restraining device extending therefrom to the reaction canister, said restraining device joining said module door to the reaction canister after said first and second leg tear ways have torn.

8. The air bag module door of claim 5 having more than one leg joined to the lower surface of the face portion and adjacent the first opposed longitudinal side.

9. The air bag module door of claim 8 having a greater number of legs adjacent the first opposed longitudinal side than the number of legs adjacent the second opposed longitudinal side.

10. The air bag module door of claim 5 wherein said module unit includes a reaction canister comprising the corresponding mounting sections each comprising a female form slide-in connector, wherein said first leg is integral to said face portion and includes at least one tear way intermediate said first and second ends, said tear way adapted to tear under the influence of inflating of the air bag whereby at least the first opposed longitudinal side is decoupled to permit the air bag to deploy through the opening, and wherein the second end of said first leg comprises a mating male form slide-in connector for slide-in fastenerless connection with the corresponding female form slide-in connector of the reaction canister.

11. The air bag module door of claim 10 wherein said second leg is integral to said face portion and includes at least one tear way intermediate said first and second ends, said tear way adapted to tear under the influence of inflating of the air bag whereby the second opposed longitudinal side is also decoupled to permit the air bag to deploy through the opening, and wherein said second end of said second leg comprises a male form slide-in connector for slide-in fastenerless connection with a corresponding mating female form slide-in connector of the reaction canister.

12. An air bag module door for an air bag module unit including a reaction canister, said module door comprising:

a face portion to provide closure to an air bag deployment opening in an instrument panel of a vehicle, said face portion having an upper surface, a lower surface and a peripheral surface between the upper and lower surfaces with the peripheral surface including at least two opposed longitudinal sides, said module door having at least a portion of the peripheral surface supported by an underlying mating surface portion of the instrument panel,

at least one first flexible leg integral with the lower surface of the face portion and adjacent a first of said opposed longitudinal sides, said first flexible leg permitting said face portion to be positioned about the air bag deployment opening as the module unit is rigidly secured to the vehicle, said first flexible leg having a male form slide-in connector at an end thereof for slide-in fastenerless connection with a corresponding mating female form slide-in connector on the reaction canister, and

at least one second flexible leg integral with the lower surface of the face portion and adjacent a second of said opposed longitudinal sides, said second flexible leg further permitting said face portion to be positioned about the air bag deployment opening as the module unit is rigidly secured to the vehicle, said second flexible leg having a male form connector at an end thereof for snap-in engagement with a corresponding mating female form snap-in connector on the reaction canister and wherein, under the influence of an inflating air bag, the male form snap-in connector disengages from the female form snap-in connector as the air bag deploys out of the opening with said face portion pivotally hinging open about at least said first flexible leg.

13. The air bag module door of claim 12 having more than one leg joined to the lower surface of the face portion and adjacent the first opposed longitudinal side.

14. The air bag module door of claim 13 having a greater number of legs adjacent the first opposed longitudinal side than are adjacent the second opposed longitudinal side.

15. A method for positioning an air bag module door within an instrument panel air bag deployment opening of a vehicle and securing the module door to an air bag module unit within the vehicle, wherein the module door includes:

a face portion to provide closure to the air bag deployment opening, the face portion having an upper surface, a lower surface and a peripheral surface between the upper and lower surfaces, and

at least one integral flexible leg having an end joinable to a corresponding mounting section of the module unit, said method comprising the steps of;

a) floatably joining said module door to the module unit by means of joining the end of said leg to the corresponding mounting section of the module unit, and

b) positioning the floatably joined module door over the air bag deployment opening with at least a portion of the peripheral surface of said face portion supported by an underlying portion of the instrument panel,

whereby said floatably joined door can move in at least two directions relative to the air bag deployment opening selected from longitudinally, laterally, and vertically and wherein said method additionally comprises the step of;

c) rigidly securing the module unit to the vehicle whereby the joined flexible leg becomes tensioned and said module door is fixed in position relative to the air bag deployment opening in said at least two selected directions.

16. The method of claim 15 wherein the end of said leg comprises a male form slide-in connector and the corresponding mounting section of the module unit comprises a corresponding mating female form slide-in connector, said step of floatably joining said module door to the module unit comprises the steps of:

sliding the male form slide-in connector at the end of said leg into the female slide-in connector of the mounting section of the module unit.

17. The method of claim 15 wherein said face portion additionally comprises a tear way adapted to tear under the influence of inflating of the air bag to define at least one air bag release door.

18. The method of claim 15 wherein said peripheral surface includes first and second opposed longitudinal sides with at least one first flexible leg joined to the lower surface of the face portion and adjacent the first opposed longitudinal side and with at least one second flexible leg joined at a first end to the lower surface of the face portion and adjacent the second opposed longitudinal side, wherein the joinable end of said first and second legs comprise a male form slide-in connector and the corresponding mounting section of the module unit comprises corresponding mating female form slide-in connectors, said step of floatably joining said module door to the module unit comprises the steps of:

sliding the male form slide-in connector at the end of said first leg into the corresponding female slide-in connector of the mounting section of the module unit and

sliding the male form slide-in connector at the end of said second leg into the corresponding female slide-in connector of the mounting section of the module unit.

19. An air bag module door for an air bag module unit, said module door comprising:

a face portion to provide closure to an opening in an interior trim structure of a vehicle wherethrough an air bag is deployable, said face portion having an upper surface, a lower surface and a peripheral surface between the upper and lower surfaces, with at least a portion of the peripheral surface supported by an underlying portion of the interior trim structure, said face portion comprising a tear way adapted to tear under the influence of inflating of the air bag to define at least one air bag release door, and

at least one first flexible leg integral with said face portion at a first end and joinable at a second end to a corresponding mounting section of the module unit, said flexible leg and said face portion being a one-piece unit with said flexible leg permitting said face portion to be positioned about the air bag deployment opening as the module unit is secured to the vehicle and wherein said flexible leg becomes tensioned as said module door is fixed in position relative to the air bag deployment opening.

20. The air bag module door of claim 19 wherein said first leg includes at least one tear way intermediate said first and second ends.