Vehicle and an airbag assembly for the vehicle

• US 9,114,776 B2
• Filed: 02/13/2014
• Issued: 08/25/2015
• Est. Priority Date: 05/09/2013
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Thomas, Scott D., Weiss, Howard C., Zawisa, Kenneth M.
• Primary Examiner(s): VERLEY, NICOLE T
• Application Number:
  US14/179,965
• Publication Number:
  US 20140333053A1
• Time in Patent Office: 558 Days
• US Class Current: 1/1
• CPC Class Codes: B60R 2021/23107 the bag being integrated in a multi-bag system
• 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 21/233 comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other B60R21/232 takes precedence
• CPC Class Codes: B60R 21/2338 Tethers

Abstract

A vehicle and an airbag assembly are disclosed. A bladder includes a first expandable region defining a first maximum width between first and second sides of the first expandable region along a first axis when in a deployed position and a second expandable region defining a second maximum width between first and second sides of the second expandable region along the first axis when in the deployed position. A tether faces the second side of the first expandable region. The tether is attached to the bladder such that the first side of the second expandable region and the second side of the first expandable region partially overlap each other in the deployed position to cause the first expandable region to deploy outwardly in front of the second expandable region to define a total width along the first axis greater than one of the first and second maximum widths.

Claims

1. An airbag assembly for a vehicle, the assembly comprising:

a bladder adapted to be attached to the vehicle and including a first side and a second side opposing each other along a first axis, with the bladder presenting a pre-deployed position being deflated and a deployed position being inflated;

wherein the bladder includes a first expandable region and a second expandable region adjacent to each other, with the first and second expandable regions each having the first and second sides;

wherein the first expandable region defines a first maximum width between the first and second sides of the first expandable region along the first axis when in the deployed position and the second expandable region defines a second maximum width between the first and second sides of the second expandable region along the first axis when in the deployed position; and

a tether facing the second side of the first expandable region and attached to the bladder such that the first side of the second expandable region and the second side of the first expandable region partially overlap each other in the deployed position to cause the first expandable region to deploy outwardly in front of the second expandable region to define a total width along the first axis greater than one of the first and second maximum widths;

wherein the first side of the second expandable region and the second side of the first expandable region partially overlap each other along the first axis when in the deployed position such that part of the second side of the first expandable region and part of the first side of the second expandable region remain spaced from each other along the first axis when in the deployed position;

wherein the bladder includes a first peripheral end and a second peripheral end spaced from each other to define a length of the bladder transverse to the first axis when in the pre-deployed position, and wherein the bladder includes a peripheral edge disposed between the first and second peripheral ends, with a first attachment region disposed along at least one of the first peripheral end and the peripheral edge, and a second attachment region disposed along the second peripheral end, with the tether attached to the first and second attachment regions.

2. An assembly as set forth in claim 1 wherein the bladder defines a slot between the first and second expandable regions, with the tether disposed through the slot such that a first portion of the tether abuts the first side of the second expandable region and a second portion of the tether abuts the second side of the first expandable region.

3. An assembly as set forth in claim 2 further including a bridge attached to the bladder adjacent to the slot to at least partially cover the slot that opens when in the deployed position.

4. An assembly as set forth in claim 1 wherein the length is further defined as a first length, and wherein the bladder includes a first segment defining the first length, and wherein the bladder includes a second segment defining a second length between the first and second peripheral ends when in the pre-deployed position, with the second length being less than the first length to define a recess, and wherein the bladder includes a strip attached to the second peripheral end along the second segment to remove the recess.

5. An assembly as set forth in claim 1 wherein the tether is further defined as a strap.

6. An airbag assembly for a vehicle, the assembly comprising:

a bladder adapted to be attached to the vehicle and including a first side and a second side opposing each other along a first axis, with the bladder presenting a pre-deployed position being deflated and a deployed position being inflated;

wherein the bladder includes a first expandable region and a second expandable region adjacent to each other, with the first and second expandable regions each having the first and second sides;

wherein the first expandable region defines a first maximum width between the first and second sides of the first expandable region along the first axis when in the deployed position and the second expandable region defines a second maximum width between the first and second sides of the second expandable region along the first axis when in the deployed position; and

a tether facing the second side of the first expandable region and attached to the bladder such that the first side of the second expandable region and the second side of the first expandable region partially overlap each other in the deployed position to cause the first expandable region to deploy outwardly in front of the second expandable region to define a total width along the first axis greater than one of the first and second maximum widths;

wherein the first side of the second expandable region and the second side of the first expandable region partially overlap each other along the first axis when in the deployed position such that part of the second side of the first expandable region and part of the first side of the second expandable region remain spaced from each other along the first axis when in the deployed position;

wherein the bladder includes a third expandable region, with the third expandable region having the first and second sides, and with the third expandable region defining a third maximum width between the first and second sides of the third expandable region along the first axis when in the deployed position, and wherein the tether is attached to the bladder such that the first sides of the second and third expandable regions and the second side of the first expandable region partially overlap each other in the deployed position to cause the first expandable region to deploy outwardly in front of the second and third expandable regions along the first axis to further define the total width greater than one of the first, second and third maximum widths.

7. An assembly as set forth in claim 6 wherein the bladder includes a first peripheral end and a second peripheral end spaced from each other to define a length of the bladder transverse to the first axis when in the pre-deployed position, and wherein the bladder includes a peripheral edge disposed between the first and second peripheral ends, with a first attachment region disposed along at least one of the first peripheral end and the peripheral edge, and a second attachment region disposed along the second peripheral end, with the tether attached to the first and second attachment regions.

8. An assembly as set forth in claim 6 wherein the bladder defines a first slot between the first and second expandable regions and a second slot between the first and third expandable regions, with the tether disposed through the first and second slots such that a first portion of the tether abuts the first side of the second expandable region, a second portion of the tether abuts the second side of the first expandable region and a third portion of the tether abuts the first side of the third expandable region.

9. An assembly as set forth in claim 8 wherein the tether includes a flap extending through the first and second slots and attached to one of the first and second sides of the bladder to at least partially cover an opening between the second and third expandable regions when in the deployed position.

10. An assembly as set forth in claim 6 wherein the bladder includes a first attachment region disposed between the first and second expandable regions and a second attachment region disposed between the first and third expandable regions, with the first attachment region defining a first slot and the second attachment region defining a second slot, with the tether disposed through the first and second slots such that a first end portion of the tether extends through the first slot to attach to the first attachment region, a second end portion of the tether extends through the second slot to attach to the second attachment region, with a middle portion of the tether overlapping the second side of the first expandable region.

11. An assembly as set forth in claim 6 wherein the bladder includes a first peripheral end and a second peripheral end spaced from each other to define a length of the bladder transverse to the first axis when in the pre-deployed position, and wherein the bladder defines a first slot between the first and second expandable regions and a second slot between the first and third expandable regions, with the tether disposed through the first and second slots such that a first portion of the tether abuts the first side of the second expandable region, a second portion of the tether abuts the second side of the first expandable region, a third portion of the tether abuts the first side of the third expandable region and the tether wraps around the second peripheral end and over the second side of the third expandable region.

12. An assembly as set forth in claim 6 wherein the tether is further defined as a strap.

13. A vehicle comprising:

a vehicle structure defining an interior compartment;

an airbag assembly including;

a bladder attached to the vehicle structure and including a first side and a second side opposing each other along a first axis, with the bladder presenting a pre-deployed position being deflated and a deployed position being inflated, and with the first side facing inwardly toward the interior compartment when in the deployed position and the second side facing outwardly away from the interior compartment when in the deployed position;

wherein the bladder includes a first expandable region and a second expandable region adjacent to each other, with the first and second expandable regions each having the first and second sides;

wherein the first expandable region defines a first maximum width between the first and second sides of the first expandable region along the first axis when in the deployed position and the second expandable region defines a second maximum width between the first and second sides of the second expandable region along the first axis when in the deployed position; and

a tether facing the second side of the first expandable region and attached to the bladder such that the first side of the second expandable region and the second side of the first expandable region partially overlap each other in the deployed position to cause the first expandable region to deploy outwardly in front of the second expandable region to define a total width along the first axis greater than one of the first and second maximum widths;

wherein the first expandable region projects outwardly into the interior compartment away from the vehicle structure when in the deployed position, and wherein the first side of the second expandable region and the second side of the first expandable region partially overlap each other along the first axis when in the deployed position such that part of the second side of the first expandable region and part of the first side of the second expandable region remain spaced from each other along the first axis when in the deployed position;

wherein the bladder defines a slot between the first and second expandable regions, with the tether disposed through the slot such that a first portion of the tether abuts the first side of the second expandable region and a second portion of the tether abuts the second side of the first expandable region.

14. A vehicle as set forth in claim 13 wherein the bladder includes a first peripheral end and a second peripheral end spaced from each other to define a length of the bladder transverse to the first axis when in the pre-deployed position, and wherein the bladder includes a peripheral edge disposed between the first and second peripheral ends, with a first attachment region disposed along at least one of the first peripheral end and the peripheral edge, and a second attachment region disposed along the second peripheral end, with the tether attached to the first and second attachment regions.

15. An assembly as set forth in claim 14 wherein the length is further defined as a first length, and wherein the bladder includes a first segment defining the first length, and wherein the bladder includes a second segment defining a second length between the first and second peripheral ends when in the pre-deployed position, with the second length being less than the first length to define a recess, and wherein the bladder includes a strip attached to the second peripheral end along the second segment to remove the recess.

16. A vehicle as set forth in claim 13 wherein the bladder includes a third expandable region, with the third expandable region having the first and second sides, and with the third expandable region defining a third maximum width between the first and second sides of the third expandable region along the first axis when in the deployed position, and wherein the tether is attached to the bladder such that the first sides of the second and third expandable regions and the second side of the first expandable region partially overlap each other in the deployed position to cause the first expandable region to deploy outwardly in front of the second and third expandable regions along the first axis to further define the total width greater than one of the first, second and third maximum widths.

17. A vehicle as set forth in claim 16 wherein the bladder includes a first peripheral end and a second peripheral end spaced from each other to define a length of the bladder transverse to the first axis when in the pre-deployed position, and wherein the bladder includes a peripheral edge disposed between the first and second peripheral ends, with a first attachment region disposed along at least one of the first peripheral end and the peripheral edge, and a second attachment region disposed along the second peripheral end, with the tether attached to the first and second attachment regions.

18. A vehicle as set forth in claim 16 wherein the slot is further defined as a first slot and the bladder defines the first slot between the first and second expandable regions and a second slot between the first and third expandable regions, with the tether disposed through the first and second slots such that a first portion of the tether abuts the first side of the second expandable region, a second portion of the tether abuts the second side of the first expandable region and a third portion of the tether abuts the first side of the third expandable region.

19. An assembly as set forth in claim 18 wherein the tether includes a flap extending through the first and second slots and attached to one of the first and second sides of the bladder to at least partially cover an opening between the second and third expandable regions when in the deployed position.

20. An assembly as set forth in claim 13 further including a bridge attached to the bladder adjacent to the slot to at least partially cover the slot that opens when in the deployed position.