Folded inflatable curtain

• US 20020027341A1
• Filed: 08/17/2001
• Published: 03/07/2002
• Est. Priority Date: 05/23/2000
• Status: Active Grant

• 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: Nayef, Ayad G., Bakhsh, Ali Emam, Stein, Russell E., Bertossi, Rico Scott
• Granted Patent: US 6,565,118 B2
• Time in Patent Office: Days
• US Class Current: 280/730.2
• CPC Class Codes: B60R 2021/161 characterised by additional means for controlling deployment trajectory
• 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 21/237 characterised by the way they are folded

Abstract

Apparatus (10) includes an inflatable vehicle occupant protection device (14) inflatable away from a vehicle roof (18) into a position between the side structure (16) of the vehicle (12) and a vehicle occupant. An anchor device (90) is connected to the side structure (16). A flexible elongated member (80) has a first end (82) connected to a first location (84) spaced from a rear edge (72) of the protection device (14) and an opposite second end (86) connected to the anchor device (90). The protection device (14) prior to inflation is folded along a first fold line (112) spaced from the rear edge (72) and extending proximate the first location (84) in a direction transverse to a lower edge (62) of the protection device (14). The protection device (14) is folded along at least one fold line (114, 116) located forward of the first fold line (112) such that the first fold line extends vertically in the vehicle (12), adjacent to and entirely forward of the anchor device (90).

Claims

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

an inflatable vehicle occupant protection device that is inflatable away from the vehicle roof into a position between the side structure of the vehicle and a vehicle occupant;

an inflation fluid source that provides inflation fluid for inflating said inflatable vehicle occupant protection device;

an anchor device connected to the side structure of the vehicle; and

a flexible elongated member having a first end connected to said inflatable vehicle occupant protection device at a first location spaced from a rear edge of said inflatable vehicle occupant protection device, said flexible elongated member having an opposite second end connected to said anchor device;

said inflatable vehicle occupant protection device prior to inflation being folded along a first fold line spaced from said rear edge, said first fold line extending proximate said first location in a direction transverse to a lower edge of said inflatable vehicle occupant protection device, said inflatable vehicle occupant protection device being folded along at least one fold line located forward of said first fold line such that said first fold line extends vertically in the vehicle and such that said first fold line is positioned adjacent to and entirely forward of said anchor device.

2. The apparatus recited in claim 1, wherein said inflatable vehicle occupant protection device includes a rear portion located rearward of said first fold line and being at least partially defined by said rear edge, said rear portion having a position overlying at least a portion of said anchor device when said inflatable vehicle occupant protection device is inflated, said rear portion being moved away from said position overlying at least a portion of said anchor device when said inflatable vehicle occupant protection device is folded along said first fold line.

3. The apparatus recited in claim 2, wherein said first fold line extends generally parallel to said anchor device.

4. The apparatus recited in claim 2, wherein said rear portion of said inflatable vehicle occupant protection device is folded over along said first fold line such that said rear portion overlies a forward portion of said inflatable vehicle occupant protection device located forward of said first fold line, said forward portion being positioned between said rear portion and the vehicle side structure when said rear portion is folded along said first fold line.

5. The apparatus recited in claim 4, wherein said at least one fold line comprises second and third fold lines located on said forward portion, said second fold line being spaced a first distance from said first fold line, said third fold line being spaced a second distance from said first fold line greater than said first distance, a portion of said inflatable vehicle occupant protection device located between said third fold line and said rear edge prior to inflation being folded forward in an inboard direction along said third fold line, a portion of said inflatable vehicle occupant protection device located between said second fold line and said rear edge being folded rearward in an inboard direction along said second fold line.

6. The apparatus recited in claim 1, wherein said inflatable vehicle occupant protection device when folded along said first fold line and said at least one fold line located forward of said first fold line is rolled up in an outboard direction into a stored position extending along the side structure of the vehicle near the intersection of the side structure of the vehicle and the vehicle roof.

7. The apparatus recited in claim 1, wherein said first fold line extends adjacent said first location on said inflatable vehicle occupant protection device.

8. The apparatus recited in claim 1, wherein said first location is adjacent said lower edge.

9. The apparatus recited in claim 1, wherein said first location intersects said lower edge.

10. The apparatus recited in claim 1, wherein said first location is positioned rearward of at least a portion of said anchor device when said inflatable vehicle occupant protection device is inflated.

11. The apparatus recited in claim 1, wherein said inflatable vehicle occupant protection device includes indicia for indicating said first fold line and said at least one fold line located forward of said first fold line.

12. The apparatus recited in claim 1, wherein said anchor device comprises a slider mechanism.

13. The apparatus recited in claim 12, wherein said slider mechanism comprises a track and an element slidable along said track, said second end of said flexible elongated member being connected to said element.

14. The apparatus recited in claim 1, wherein said inflatable vehicle occupant protection device comprises an inflatable curtain.

15. The apparatus recited in claim 14, further comprising a fill tube for delivering said inflation fluid from said inflation fluid source to said inflatable curtain.

17. The method recited in claim 16, wherein said inflatable vehicle occupant protection device includes a rear portion at least partially defined by said rear edge, said rear portion having a position overlying at least a portion of said anchor device when said inflatable vehicle occupant protection device is inflated, said step of folding said inflatable vehicle occupant protection device along a first fold line comprising the step of moving said rear portion away from said position overlying at least a portion of said anchor device.

18. The method recited in claim 17, wherein said step of moving said rear portion comprises the step of folding said rear portion over along said first fold line such that said rear portion overlies a forward portion of said inflatable vehicle occupant protection device located forward of said first fold line, said forward portion being positioned between said rear portion and the vehicle side structure when said rear portion is folded along said first fold line.

19. The method recited in claim 18, wherein said at least one fold line comprises second and third fold lines located on said forward portion, said second fold line being spaced a first distance from said first fold line, said third fold line being spaced a second distance from said first fold line greater than said first distance, said step of folding said inflatable vehicle occupant protection device along at least one fold line located forward of said first fold line comprising the steps of:

folding a portion of said inflatable vehicle occupant protection device located between said third fold line and said rear edge forward in an inboard direction along said third fold line prior to inflation of said inflatable vehicle occupant protection device; and

folding a portion of said inflatable vehicle occupant protection device located between said second fold line and said rear edge rearward in an inboard direction along said second fold line prior to inflation of said inflatable vehicle occupant protection device.

20. The method recited in claim 16, further comprising the step of providing indicia for indicating said first fold line and said at least one fold line located forward of said first fold line.

16. A method for placing an inflatable vehicle occupant protection device in a stored position, said inflatable vehicle occupant protection device comprising a portion of an apparatus for helping to protect an occupant of a vehicle, said inflatable vehicle occupant protection device being inflatable away from a roof of the vehicle into a position between a side structure of the vehicle and a vehicle occupant, said apparatus further including an anchor device connected to the side structure and a flexible elongated member having a first end connected to said inflatable vehicle occupant protection device at a first location spaced from a rear edge of said inflatable vehicle occupant protection device and an opposite second end connected to said anchor device, said method comprising the steps of:

folding said inflatable vehicle occupant protection device along a first fold line spaced from a rear edge of said inflatable vehicle occupant protection device, said first fold line extending proximate said first location in a direction transverse to a lower edge of said inflatable vehicle occupant protection device;

folding said inflatable vehicle occupant protection device along at least one fold line located forward of said first fold line such that said first fold line extends vertically in the vehicle and such that said first fold line is positioned adjacent to and entirely forward of said anchor device; and

rolling up said inflatable vehicle occupant protection device in an outboard direction into a stored position extending along the side structure of the vehicle near the intersection of the side structure of the vehicle and the vehicle roof.