Inflatable curtain with positioning device

• US 6,176,515 B1
• Filed: 10/07/1999
• Issued: 01/23/2001
• Est. Priority Date: 10/07/1999
• Status: Expired due to Term

• Current Assignee: TRW Vehicle Safety Systems Incorporated (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Original Assignee: TRW Limited (Zeppelin - Stiftung der Stadt Friedrichshafen), TRW Vehicle Safety Systems Incorporated (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: Wallner, John P., Brannon, Kenneth D., OʼLoughlin, John P., OʼDocherty, James K.
• Primary Examiner(s): Dickson, Paul N.
• Assistant Examiner(s): Fleming, Faye M.
• Application Number:
  US09/414,257
• Time in Patent Office: 474 Days
• Field of Search: 280/728.1, 280/728.2, 280/730.1, 280/730.2, 280/729
• 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

An apparatus (10) for helping to protect an occupant of a vehicle (12) that has a side structure (16) comprises a vehicle occupant protection device (14) which is inflatable into a position between the side structure of the vehicle and a vehicle occupant. The vehicle occupant protection device (14), when inflated, has an outer panel (47) positioned adjacent to the side structure (16) and an opposite inner panel (48). Apertures (70) are spaced in a row and extend through the device (14). First and second flexible elongated members (80 and 82) have respective first ends (84 and 94) and opposite second ends (86 and 96) connected to the side structure (16). The first and second flexible elongated members (80 and 82) extend through the apertures (70) and have respective first and second portions (102 and 110) which extend along respective first and second parts (104 and 112) of the outer panels (47) and then along respective first and second parts of the inner panels (48). When the vehicle occupant protection device (14) is inflated, the first and second portions (102 and 110) move away from each other and tension the first and second flexible elongated members (80 and 82).

Claims

1. Apparatus for helping to protect an occupant of a vehicle that has a side structure, said apparatus comprising:

a vehicle occupant protection device which is inflatable into a position between the side structure of the vehicle and a vehicle occupant, said vehicle occupant protection device when inflated having an outer panel positioned adjacent to the vehicle side structure and an opposite inner panel;

at least one aperture extending through said vehicle occupant protection device;

a first flexible elongated member having first and second opposite ends which are connected to the vehicle side structure, said first flexible elongated member extending through said at least one aperture and having first portions extending along a first part of said outer panel of said vehicle occupant protection device and then along a first part of said inner panel of said vehicle occupant protection device;

a second flexible elongated member having first and second opposite ends which are connected to the vehicle side structure, said second flexible elongated member extending through said at least one aperture and having second portions extending along a second part of said outer panel of said vehicle occupant protection device and then along a second part of said inner panel of said vehicle occupant protection device, said second parts of said outer and inner panels being opposite said first parts of said outer and inner panels of said vehicle occupant protection device; and

an inflator for providing inflation fluid for inflating said vehicle occupant protection device;

said first and second portions moving away from each other and tensioning said first and second flexible elongated members when said vehicle occupant protection device is inflated, said first and second flexible elongated members resisting movement of said vehicle occupant protection device away from the side structure of the vehicle when said vehicle occupant protection device is inflated.

2. Apparatus as defined in claim 1, wherein said at least one aperture is a row of apertures spaced along said vehicle occupant protection device, said first portions of said first flexible elongated member extending along a plurality of first parts of said outer panel and between said first parts of said outer panel extending along at least one first part of said inner panel, said second portions of said second flexible elongated member extending along a plurality of second parts of said inner panel and between said second parts of said inner panel extending along at least one second part of said outer panel.

3. Apparatus as defined in claim 1, wherein said vehicle occupant protection device is an inflatable curtain having a stored position extending along the side structure adjacent to a roof of the vehicle, said inflatable curtain being inflated in a first direction away from the vehicle roof and extending fore and aft in the vehicle along the side structure of the vehicle, said inflatable curtain having a length measured in the direction of vehicle travel.

4. Apparatus as defined in claim 3, further including a fill tube having a portion located in said inflatable curtain, said inflator being in fluid communication with said fill tube, said inflator, when actuated, providing inflation fluid to said fill tube, said fill tube directing said inflation fluid into said inflatable curtain to inflate said inflatable curtain.

5. Apparatus as defined in claim 2, wherein said apertures are spaced along the length of said vehicle occupant protection device.

6. Apparatus as defined in claim 3, wherein said inflatable curtain expands in a direction transverse to said length of said inflatable curtain when said inflatable curtain is inflated, said outer and inner panels moving away from each other when said inflatable curtain is inflated, said first and second portions being moved away from each other by said outer and inner panels.

7. Apparatus as defined in claim 3, wherein said first end of said first flexible elongated member and said first end of said second elongated member are connected to the vehicle side structure at a first location, said second end of said first flexible elongated member and said second end of said second flexible elongated member being connected to the vehicle side structure at a second location.

8. Apparatus as defined in claim 7, wherein said first and second flexible elongated members are tensioned between said first and second locations when said inflatable curtain is inflated.

9. Apparatus as defined in claim 7, wherein said first location is positioned forward of a front edge of said inflatable curtain and said second location is located rearward of a rear edge of said inflatable curtain.

10. Apparatus as defined in claim 7, wherein said first location is positioned on an A pillar of the vehicle.

11. Apparatus as defined in claim 7, wherein said second location is positioned on a C pillar of the vehicle.

12. Apparatus as defined in claim 1, wherein said first and second flexible elongated members comprise first and second straps of a fabric material.