Inflatable windshield curtain

• US 20040100073A1
• Filed: 11/22/2002
• Published: 05/27/2004
• Est. Priority Date: 11/22/2002
• 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: Bakhsh, Ali Emam, Bertossi, Rico Scott, Saberan, Al A., Nayef, Ayad E.
• Granted Patent: US 7,000,944 B2
• Time in Patent Office: Days
• US Class Current: 280/730.1
• CPC Class Codes: B60R 2021/0004 Frontal collision
• CPC Class Codes: B60R 2021/161 characterised by additional means for controlling deployment trajectory
• CPC Class Codes: B60R 2021/23107 the bag being integrated in a multi-bag system
• CPC Class Codes: B60R 2021/23161 specially adapted for protecting at least two passengers, e.g. preventing them from hitting each other
• CPC Class Codes: B60R 2021/23316 Inner seams, e.g. creating separate compartments or used as tethering means
• CPC Class Codes: B60R 2021/23386 External tether means
• CPC Class Codes: B60R 2021/2617 Curtain bag nozzles
• CPC Class Codes: B60R 21/203 in steering wheels or steering columns
• CPC Class Codes: B60R 21/213 in vehicle roof frames or pillars
• 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
• CPC Class Codes: B60R 21/237 characterised by the way they are folded
• CPC Class Codes: B60R 22/195 with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel typeelectrical circuits for triggering safety arrangements B60R21/01

Abstract

Apparatus (10) for helping to protect an occupant of a vehicle (12) includes an inflatable vehicle occupant protection device (14) and an inflator (70). The protection device (14) is inflatable from a stored position along a forward edge (62) of a vehicle roof (40) to a deployed position overlying the windshield (50). The protection device (14) while in the deployed position covers the windshield (50) from an A pillar (30) on a driver side (20) of the vehicle (12) to an A pillar of a passenger side (22) of the vehicle and from an upper edge (56) of the windshield to a position near a lower edge (58) of the windshield. The protection device (14) while deployed also covers the driver and passenger side A pillars (30).

Claims

1. Apparatus for helping to protect an occupant of a vehicle that has a roof and a windshield extending from a driver side A pillar to a passenger side A pillar of the vehicle, said apparatus comprising:

an inflatable vehicle occupant protection device having a stored position extending along a forward edge of the vehicle roof at an upper edge of the windshield; and

an inflation fluid source that is actuatable to provide inflation fluid for inflating said inflatable vehicle occupant protection device;

said inflatable vehicle occupant protection device being inflatable from said stored position to a deployed position overlying the windshield, said inflatable vehicle occupant protection device while in said deployed position covering the windshield from the driver side A pillar to the passenger side A pillar and from an upper edge of the windshield to a position near a lower edge of the windshield, said inflatable vehicle occupant protection device while in said deployed position also covering the driver side A pillar and the passenger side A pillar.

2. Apparatus as recited in claim 1, wherein said inflatable vehicle occupant protection device includes an upper edge, an opposite lower edge, and first and second end portions spaced from each other and extending between said upper and lower edges, said upper edge extending along the forward edge of the vehicle roof and the upper edge of the windshield while said inflatable vehicle occupant protection device is in said deployed position, said first and second end portions covering a substantial portion of the driver and passenger side A pillars, respectively, from an upper edge of the windshield to a position near a lower edge of the windshield while said inflatable vehicle occupant protection device is in said deployed position.

3. Apparatus as recited in claim 2, further comprising:

a first slider mechanism comprising a first track connected to and extending along the driver side A pillar and a first element slidable along said first track in a first direction away from the vehicle roof, said first element being blocked from sliding in a direction opposite said first direction, said inflatable vehicle occupant protection device being connected to said first element at a location on said first end portion near said lower edge of said inflatable vehicle occupant protection device; and

a second slider mechanism comprising a second track connected to and extending along the passenger side A pillar and a second element slidable along said second track in a second direction away from the vehicle roof, said second element being blocked from sliding in a direction opposite said second direction, said inflatable vehicle occupant protection device being connected to said second element at a location on said second end portion near said lower edge of said inflatable vehicle occupant protection device;

said inflatable vehicle occupant protection device when deployed pulling said first and second elements and causing said first and second elements to slide along their respective first and second tracks in said direction away from the vehicle roof, said first and second slider mechanisms guiding said inflatable vehicle occupant protection device to deploy along the windshield and helping to maintain said inflatable vehicle occupant protection device positioned adjacent the windshield while inflated.

4. Apparatus as recited in claim 1, wherein said inflatable vehicle occupant protection device when inflated covers a substantial portion of the windshield and covers substantial portions of the driver side A pillar and passenger side A pillar presented toward the occupant of the vehicle.

5. Apparatus as recited in claim 1, further comprising first guide means for connecting said inflatable vehicle occupant protection device to said driver side A pillar and second guide means for connecting said inflatable vehicle occupant protection device to said passenger side A pillar, said first and second guide means guiding said inflatable vehicle occupant protection device to deploy in a direction along the windshield and helping to maintain said inflatable vehicle occupant protection device positioned adjacent the windshield while inflated.

6. Apparatus as recited in claim 5, wherein the windshield extends from the forward edge of the vehicle roof at an acute angle relative to the roof, said first and second guide means guiding said inflatable vehicle occupant protection device to deploy from the forward edge of the roof along the windshield an angle about equal to the acute angle relative to the roof in said direction along the windshield.

7. Apparatus as recited in claim 5, wherein said first guide means comprises a first tether for connecting said inflatable vehicle occupant protection device to the driver side A pillar and said second guide means comprises a second tether for connecting said inflatable vehicle occupant protection device to the passenger side A pillar.

8. Apparatus as recited in claim 5, wherein said first guide means comprises a first slider mechanism comprising a first track connected to the driver side A pillar and a first element slidable along said first track and connected to said inflatable vehicle occupant protection device, said second guide means comprising a second slider mechanism comprising a second track connected to the passenger side A pillar and a second element slidable along said second track and connected to said inflatable vehicle occupant protection device.

9. Apparatus as recited in claim 1, wherein said inflatable vehicle occupant protection device when in said stored position is rolled up in an outboard direction toward the windshield of the vehicle.

10. Apparatus as recited in claim 9, wherein said inflatable vehicle occupant protection device while deploying unrolls in a direction toward the windshield of the vehicle.

11. Apparatus as recited in claim 1, wherein said inflatable vehicle occupant protection device includes at least a first chamber inflatable between the windshield and an occupant of a driver side of the vehicle, at least a second chamber inflatable between the windshield and an occupant of a passenger side of the vehicle, and at least one middle chamber positioned between said first chamber and said second chamber, said first chamber and said second chamber receiving inflation fluid and beginning to inflate before said middle chamber.

12. Apparatus as recited in claim 1, further comprising a driver side air bag inflatable between a vehicle occupant and a steering wheel of the vehicle, said windshield curtain being inflatable along the windshield between the windshield and said driver side air bag.

13. Apparatus as recited in claim 1, further comprising a passenger side air bag inflatable between a vehicle occupant and an instrument panel of the vehicle, said windshield curtain being inflatable along the windshield between the windshield and said passenger side air bag.

14. Apparatus as recited in claim 1, wherein said windshield curtain in combination with an inflatable driver side front impact air bag provides an inflated protection wall extending from the vehicle roof down to and covering a vehicle steering wheel when said windshield curtain and said driver side front impact air bag are inflated.

15. Apparatus as recited in claim 1, wherein said windshield curtain in combination with an inflatable passenger side front impact air bag provides an inflated protection wall extending from the vehicle roof down to and adjacent an instrument panel when said windshield curtain and said passenger side front impact air bag are inflated.

16. Apparatus as recited in claim 1, wherein said windshield curtain comprises a driver side portion extending from the driver side A pillar to a vehicle centerline and a passenger side portion extending from the passenger side A pillar to the vehicle centerline, said driver side portion extending from the vehicle roof to a position adjacent an upper portion of a vehicle steering wheel, said passenger side portion extending from the vehicle roof to a position adjacent a front surface of an instrument panel of the vehicle and vertically below an upper surface of the instrument panel.

17. Apparatus as recited in claim 16, wherein said passenger side portion has a lower extent that extends vertically below a lower extent of said driver side portion.

18. Apparatus as recited in claim 16, wherein said driver side portion in combination with an inflatable driver side front impact air bag provides an inflated protection wall extending from the vehicle roof down to and covering the vehicle steering wheel.

19. Apparatus for helping to protect an occupant of a vehicle that has a roof and a windshield extending at an acute angle relative to the roof from a driver side A pillar to a passenger side A pillar of the vehicle, said apparatus comprising:

an inflatable vehicle occupant protection device having a stored position extending along a forward edge of the vehicle roof adjacent an upper edge of the windshield;

an inflation fluid source that is actuatable to provide inflation fluid for inflating said inflatable vehicle occupant protection device;

first guide means for connecting said inflatable vehicle occupant protection device to the driver side A pillar; and

second guide means for connecting said inflatable vehicle occupant protection device to the passenger side A pillar;

said inflatable vehicle occupant protection device being inflatable from said stored position to a deployed position, said first and second guide means guiding said inflatable vehicle occupant protection device to deploy in a direction along the windshield, said first and second guide means helping to maintain said inflatable vehicle occupant protection device positioned adjacent the windshield while inflated.

20. Apparatus as recited in claim 19, wherein said first and second guide means guide said inflatable vehicle occupant protection device to deploy from the forward edge of the roof at an angle about equal to the acute angle relative to the roof in said direction along the windshield.

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

an inflatable vehicle occupant protection device having a stored position extending along a forward edge of the vehicle roof at an upper edge of the windshield; and

an inflation fluid source that is actuatable to provide inflation fluid for inflating said inflatable vehicle occupant protection device;

said inflatable vehicle occupant protection device being inflatable from said stored position to a deployed position overlying the windshield, said inflatable vehicle occupant protection device including at least a first chamber inflatable between the windshield and an occupant of a driver side of the vehicle, at least a second chamber inflatable between the windshield and an occupant of a passenger side of the vehicle, and at least one middle chamber positioned between said first chamber and said second chamber, said first chamber and said second chamber receiving inflation fluid and beginning to inflate before said middle chamber.

22. Apparatus for helping to protect an occupant of a vehicle that has a roof and a windshield extending from a driver side A pillar to a passenger side A pillar of the vehicle, said apparatus comprising:

an air bag inflatable between a vehicle occupant and an instrument panel of the vehicle;

an inflatable vehicle occupant protection device having a stored position extending along a forward edge of the vehicle roof at an upper edge of the windshield; and

an inflation fluid source that is actuatable to provide inflation fluid for inflating said inflatable vehicle occupant protection device;

said inflatable vehicle occupant protection device being inflatable from said stored position to a deployed position between the windshield and said air bag, said inflatable vehicle occupant protection device while in said deployed position covering the windshield from the driver side A pillar to the passenger side A pillar and extending from adjacent the roof to adjacent the instrument panel.

23. Apparatus as recited in claim 22, wherein said air bag comprises a driver side air bag inflatable between a vehicle occupant and a steering wheel of the vehicle.

24. Apparatus as recited in claim 22, wherein said air bag comprises a passenger side air bag.

25. Apparatus for helping to protect an occupant of a vehicle that has a roof and a windshield extending from a driver side A pillar to a passenger side A pillar of the vehicle, said apparatus comprising:

an inflatable vehicle occupant protection device having an upper edge connected to the vehicle along a forward edge of the vehicle roof, a first end portion connected to the vehicle along the driver side A pillar, and a second end portion connected to the vehicle along the passenger side A pillar, said inflatable vehicle occupant protection device having a stored position extending along the forward edge and along the driver and passenger side A pillars; and

an inflation fluid source that is actuatable to provide inflation fluid for inflating said inflatable vehicle occupant protection device;

said inflatable vehicle occupant protection device being inflatable from said stored position to a deployed position overlying the windshield, said inflatable vehicle occupant protection device while in said deployed position covering the windshield from the driver side A pillar to the passenger side A pillar and covering the driver side A pillar and the passenger side A pillar.

26. Apparatus as recited in claim 25, wherein said first end portion is connected to the vehicle along the driver side A pillar from a position near an upper edge of the windshield to a position near a lower edge of the windshield, and said second end portion is connected to the vehicle along the passenger side A pillar from a position near the upper edge of the windshield to a position near the lower edge of the windshield.

27. Apparatus as recited in claim 25, wherein said first end portion is connected to the driver side A pillar at a position near an upper edge of the windshield and at a position near a lower edge of the windshield, and said second end portion is connected to the passenger side A pillar at a position near the upper edge of the windshield and at a position near the lower edge of the windshield.

28. Apparatus as recited in claim 25, wherein said first end portion extends laterally beyond the driver side A pillar and said second end portion extends laterally beyond the passenger side A pillar when said inflatable vehicle occupant protection device is in a non-inflated and flattened out condition.

29. Apparatus as recited in claim 28, wherein said first end portion includes a first edge that diverges downward and away from the driver side A pillar, and said second end portion includes a second edge that diverges downward and away from the passenger side A pillar when said inflatable vehicle occupant protection device is in a non-inflated and flattened out condition.

30. Apparatus as recited in claim 25, wherein said inflatable vehicle occupant protection device comprises a plurality of inflatable chambers that when inflated contract in a lateral direction in the vehicle thus tensioning said inflatable vehicle occupant protection device between the A pillars.

31. Apparatus as recited in claim 30, wherein said inflatable chambers are configured to contract laterally near a lower edge of said inflatable vehicle occupant protection device to a greater extent than portions near said upper edge of said inflatable vehicle occupant protection device.

32. Apparatus for helping to protect an occupant of a vehicle that has a roof and a windshield extending from a driver side A pillar to a passenger side A pillar of the vehicle, said apparatus comprising:

an inflatable vehicle occupant protection device having an upper edge connected to the vehicle along a forward edge of the vehicle roof, a first end portion connected to the vehicle along the driver side A pillar, and a second end portion connected to the vehicle along the passenger side A pillar; and

an inflation fluid source that is actuatable to provide inflation fluid for inflating said inflatable vehicle occupant protection device;

said inflatable vehicle occupant protection device when deflated having slack between the A pillars of the vehicle, the amount of slack between the A pillars increasing as said inflatable vehicle occupant protection device extends away from the vehicle roof.

33. Apparatus as recited in claim 32, wherein the amount of slack in said inflatable vehicle occupant protection device is sufficient to permit said inflatable vehicle occupant protection device to be placed in a stored position extending along the forward edge and along the driver and passenger side A pillars.

34. Apparatus for helping to protect an occupant of a vehicle that has a roof and a windshield extending from a driver side A pillar to a passenger side A pillar of the vehicle, said apparatus comprising:

an inflatable vehicle occupant protection device having a stored position extending along a forward edge of the vehicle roof at an upper edge of the windshield; and

an inflation fluid source that is actuatable to provide inflation fluid for inflating said inflatable vehicle occupant protection device;

said inflatable vehicle occupant protection device being inflatable from said stored position to a deployed position overlying the windshield, said inflatable vehicle occupant protection device including a driver side portion covering the windshield from the driver side A pillar to a centerline of the vehicle and from an upper edge of the windshield to a position terminating adjacent an upper extend of a steering wheel of the vehicle, said inflatable vehicle occupant protection device including a passenger side portion covering the windshield from the passenger side A pillar to a centerline of the vehicle and from an upper edge of the windshield to a position terminating adjacent a front surface and below an upper surface of an instrument panel of the vehicle.

35. Apparatus for helping to protect an occupant of a vehicle that has a roof and a windshield extending from a driver side A pillar to a passenger side A pillar of the vehicle, said apparatus comprising:

an inflatable windshield curtain inflatable away from the roof to a position overlying the windshield and extending from the driver side A pillar to the passenger side A pillar;

an inflatable driver side air bag inflatable between a vehicle occupant and a steering wheel of the vehicle; and

at least one inflation fluid source actuatable to provide inflation fluid for inflating said windshield curtain and said driver side air bag;

said windshield curtain and said driver side air bag while inflated combining to provide an inflated protection wall extending from the vehicle roof down to and covering the vehicle steering wheel.

36. Apparatus for helping to protect an occupant of a vehicle that has a roof and a windshield extending from a driver side A pillar to a passenger side A pillar of the vehicle, said apparatus comprising:

an inflatable windshield curtain inflatable away from the roof to a position overlying the windshield and extending from the driver side A pillar to the passenger side A pillar;

an inflatable passenger side air bag inflatable between a vehicle occupant and an instrument panel of the vehicle; and

at least one inflation fluid source actuatable to provide inflation fluid for inflating said windshield curtain and said passenger side air bag;

said windshield curtain and said passenger side air bag while inflated combining to provide an inflated protection wall extending from the vehicle roof down to a position adjacent a front surface and below an upper surface of the instrument panel.