Vehicle occupant protection apparatus

• US 6,053,530 A
• Filed: 07/23/1998
• Issued: 04/25/2000
• Est. Priority Date: 07/23/1998
• Status: Expired due to Fees

• Current Assignee: TRW Vehicle Safety Systems Incorporated (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Original Assignee: TRW Vehicle Safety Systems Incorporated (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: Faigle, Ernst M.
• Primary Examiner(s): Dickson, Paul N.
• Assistant Examiner(s): JASMIN, LYNDA C
• Application Number:
  US09/121,511
• Time in Patent Office: 642 Days
• Field of Search: 280/735, 280/736, 280/728.3, 280/732, 280/731, 280/751
• US Class Current: 280/735
• CPC Class Codes: B60R 21/01508 detecting forces or pressure in bags or modules
• CPC Class Codes: B60R 21/01516 using force or pressure sensing means

Abstract

An apparatus (10) includes an inflatable vehicle occupant protection device (14) which is deployable into engagement with a vehicle occupant. The apparatus (14) further includes a source (16) of inflation fluid and a device (62) that is actuatable to regulate a flow of the inflation fluid from the source (16) to the protection device (14). A cover structure (40) is configured to cover the protection device (14) at a location that is spaced from the occupant when the occupant is not out-of-position. A sensor (50) senses a force (F) applied to the cover structure (40) by the occupant when the occupant is out-of-position. A controller (64) responds to the sensor (50) by controlling the actuatable device (62) with reference to the force (F) applied to the cover structure (40) by the out-of-position occupant.

Claims

1. Apparatus comprising:

an inflatable vehicle occupant protection device deployable into engagement with a vehicle occupant;

a source of inflation fluid;

a device that is actuatable to regulate a flow of said inflation fluid from said source to said protection device;

a cover structure configured to cover said protection device at a location that is spaced from said occupant when said occupant is not out-of-position;

a sensor that senses a force applied to said cover structure by said occupant when said occupant is out-of-position; and

a controller that responds to said sensor by controlling actuation of said actuatable device with reference to said force.

2. Apparatus as defined in claim 1 wherein said controller controls actuation of said actuatable device in a selected one of a plurality of differing modes corresponding to a plurality of differing forces that may be applied to said cover structure by an out-of-position vehicle occupant.

3. Apparatus as defined in claim 1 wherein said actuatable device is part of an inflator containing said source of inflation fluid.

4. Apparatus as defined in claim 3 wherein said actuatable device is a valve.

5. Apparatus as defined in claim 1 wherein said cover structure comprises a trim panel configured to define the contour of a vehicle instrument panel across the location of said protection device.

6. Apparatus as defined in claim 1 wherein said sensor senses deflection of said cover structure under said force.

7. Apparatus as defined in claim 6 wherein said sensor comprises a strain gauge.

8. Apparatus as defined in claim 6 wherein said sensor comprises an optical fiber mounted to deflect with said cover structure.

9. Apparatus comprising:

an inflatable vehicle occupant protection device deployable into engagement with a vehicle occupant;

an inflator which is actuatable to inflate said protection device;

a cover structure configured to cover said protection device at a location that is spaced from said occupant when said occupant is not out-of-position;

a sensor that senses a force applied to said cover structure by said occupant when said occupant is out-of-position; and

a controller that responds to said sensor by controlling actuation of said inflator with reference to said force.

10. Apparatus as defined in claim 9 wherein said controller controls actuation of said inflator in a first mode when said sensor senses said force and in a second, different mode when said sensor does not sense said force.

11. Apparatus as defined in claim 10 wherein said inflator does not inflate said protection device when actuation of said inflator is controlled in said second mode.

12. Apparatus as defined in claim 10 wherein said first mode is one of a plurality of differing modes corresponding to a plurality of differing forces that may be applied to said cover structure by an out-of-position vehicle occupant.

13. Apparatus as defined in claim 9 wherein said cover structure comprises a trim panel configured to continue the contour of a vehicle instrument panel across the location of said protection device.

14. Apparatus as defined in claim 9 wherein said sensor senses deflection of said cover structure under the influence of said force.

15. Apparatus as defined in claim 14 wherein said sensor comprises a strain gauge.

16. Apparatus as defined in claim 14 wherein said sensor comprises an optical fiber mounted to deflect with said cover structure.

17. Apparatus comprising:

an inflatable vehicle occupant protection device deployable into engagement with a vehicle occupant;

means for inflating said protection device;

means for covering said protection device at a location that is spaced from said occupant when said occupant is not out-of-position;

means for sensing a force applied to said covering means by said occupant when said occupant is out-of-position; and

means for responding to said sensing means by actuating said inflating means in a selected one of a plurality of differing modes corresponding to a plurality of differing forces that may be applied to said covering means by an out-of-position vehicle occupant.

18. Apparatus as defined in claim 17 wherein said modes include a mode in which said inflating means does not inflate said protection device.