Vehicle occupant protection device with spring connector

• US 6,155,597 A
• Filed: 05/11/1999
• Issued: 12/05/2000
• Est. Priority Date: 05/11/1999
• 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: Sutherland, Daniel R., Bowers, Paul A.
• Primary Examiner(s): CULBRETH, ERIC D
• Application Number:
  US09/309,954
• Time in Patent Office: 574 Days
• Field of Search: 280/730.1, 280/730.2, 280/728.2, 280/749, 280/753, 280/748, 280/743.2
• US Class Current: 280/730.2
• CPC Class Codes: B60R 2021/23386 External tether means
• CPC Class Codes: B60R 21/232 Curtain-type airbags deploying mainly in a vertical direction from their top edge
• CPC Class Codes: B60R 21/2338 Tethers

Abstract

A vehicle occupant protection device (14) has an inflated condition wherein the vehicle occupant protection device is located between a side structure (16) of the vehicle (12) and a vehicle occupant. When in the inflated condition, the vehicle occupant protection device (14) has a given length measured in the direction of vehicle travel. The length of the vehicle occupant protection device (14) increases as measured in the direction of vehicle travel as the vehicle occupant protection device deflates from the inflated condition to a deflated condition. A first spring connector (52) connects the vehicle occupant protection device (14) to the vehicle (12). The first spring connector (52) applies force to the vehicle occupant protection device (14) as it deflates and maintains tension in the deflating vehicle occupant protection device.

Claims

1. In a vehicle having a side structure, a vehicle occupant protection device having an inflated condition wherein said vehicle occupant protection device extends along a side structure of the vehicle between the side structure of the vehicle and a vehicle occupant, said vehicle occupant protection device when in said inflated condition having a length measured along the vehicle side structure in a direction of vehicle travel;

a first spring connector connected to said vehicle occupant protection device, said first spring connector connecting said vehicle occupant protection device to the vehicle, said first spring connector acting to apply force to said vehicle occupant protection device in a direction of vehicle travel when said vehicle occupant protection device is in said inflated condition; and

a first tether connected to said vehicle occupant protection device, said first tether connecting said vehicle occupant protection device to the vehicle;

said vehicle occupant protection device deflating from said inflated condition to a deflated condition, the length of said vehicle occupant protection device measured along the vehicle side structure in the direction of vehicle travel increasing as said vehicle occupant protection device deflates from said inflated condition, said first spring connector applying force to said vehicle occupant protection device as said vehicle occupant protection device deflates to maintain tension in said deflating vehicle occupant protection device along the vehicle side structure.

2. Apparatus as defined in claim 1, wherein said vehicle occupant protection device when in said inflated condition has first and second portions spaced apart along the length of the vehicle occupant protection device, said first spring connector connecting said first portion to the vehicle and applying force to said first portion in a direction of vehicle travel.

3. Apparatus as defined in claim 2, further including a second spring connector connected to said second portion of said vehicle occupant protection device, said second spring connector connecting said vehicle occupant protection device to the vehicle and applying force to said second portion in a direction of vehicle travel.

4. Apparatus as defined in claim 3, further comprising a second tether connected to said second portion of said vehicle occupant protection device and being free from connection to said second spring connector, said second tether connecting said vehicle occupant protection device to the vehicle.

5. Apparatus as defined in claim 3, wherein said second spring connector is untensioned prior to inflation of said vehicle occupant protection device.

6. Apparatus as defined in claim 3, wherein said second spring connector is extended by said vehicle occupant protection device when said vehicle occupant protection device is inflated.

7. Apparatus as defined in claim 3, wherein said second spring connector and said second tether connect said vehicle occupant protection device to a C pillar of the vehicle.

8. Apparatus as defined in claim 3, wherein said second spring connector and a second tether are connected to said vehicle occupant protection device at a location on said second portion of said vehicle occupant protection device.

9. Apparatus as defined in claim 1, wherein said first spring connector is untensioned prior to inflation of said vehicle occupant protection device.

10. Apparatus as defined in claim 1, wherein said first spring connector is extended by said vehicle occupant protection device when said vehicle occupant protection device is inflated.

11. Apparatus as defined in claim 1, wherein said first spring connector and said first tether connect said vehicle occupant protection device to an A pillar of the vehicle.

12. Apparatus as defined in claim 1, wherein said first spring connector and said first tether are connected to said vehicle occupant protection device at a first location on said first portion of said vehicle occupant protection device.