Folded air bag with adhesive

• US 5,755,459 A
• Filed: 06/18/1996
• Issued: 05/26/1998
• Est. Priority Date: 06/18/1996
• 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: LaLonde, Gary R.
• Primary Examiner(s): English, Peter C.
• Application Number:
  US08/665,682
• Time in Patent Office: 707 Days
• Field of Search: 280/743.1, 280/728.1, 280/732, 280/730.1, 280/728.2, 280/728.3, 280/743.2, 280/731
• US Class Current: 280/728.3
• CPC Class Codes: B60R 21/201 Packaging straps or envelopes for inflatable members
• CPC Class Codes: B60R 21/2171 specially adapted for elongated cylindrical or bottle-like inflators with a symmetry axis perpendicular to the main direction of bag deployment, e.g. extruded reaction canisters B60R21/2176 takes precedence
• CPC Class Codes: B60R 21/237 characterised by the way they are folded

Abstract

A vehicle occupant safety apparatus (10) includes an inflatable air bag (14) folded and stored in a chamber (18) in a container (12). The air bag (14) has a plurality of folded portions (122, 126) when in the folded condition in the container (12). Adhesive material (130) releasably interconnects abutting folded portions (122a, 122b) to minimize shifting of the folded air bag (14). Preferably, other adhesive material (170) releasably interconnects flaps (100, 102) which cover the side (164) of the folded air bag (14) closest to the container door (68).

Claims

1. A vehicle occupant safety apparatus comprising:

an inflatable vehicle occupant protection device for helping to protect an occupant of a vehicle, said protection device being inflatable from a deflated, folded condition to an inflated, unfolded condition by inflation fluid from an inflation fluid source;

said protection device when in the folded condition comprising a plurality of folded portions of said protection device including first and second folded portions which are in abutting engagement; and

an adhesive material located between and interconnecting said first and second folded portions of said protection device when said protection device is in the folded condition;

said adhesive material being releasable in response to the application of a force greater than a predetermined force between said first and second folded portions due to inflation of said protection device to enable relative movement between said first and second folded portions and movement of said protection device to the inflated condition.

2. An apparatus as set forth in claim 1 further comprising a container having a plurality of walls defining a chamber in said container, said protection device when in the deflated, folded condition being folded into a stack of folded portions in said chamber in said container, said stack of folded portions including said first and second folded portions.

3. An apparatus as set forth in claim 1 wherein said adhesive material comprises a plurality of bodies of adhesive material disposed at spaced apart locations between respective folded portions of said protection device.

4. An apparatus as set forth in claim 1 wherein said adhesive material comprises a carrier strip having first and second opposite side surfaces, a first layer of adhesive on said first side surface of said carrier strip, and a second layer of adhesive on said second side surface of said carrier strip;

said first layer of adhesive being located between and interconnecting said carrier strip and said first folded portion of said protection device;

said second layer of adhesive being located between and interconnecting said carrier strip and said second folded portion of said protection device.

5. An apparatus as set forth in claim 1 wherein said adhesive material comprises a layer of adhesive forming a portion of a transfer tape, said transfer tape further comprising a liner for applying said layer of adhesive to said protection device.

6. An apparatus as set forth in claim 1 wherein said adhesive material is a tacky acrylic pressure sensitive adhesive material.

7. An apparatus as set forth in claim 6 wherein said acrylic material has a thickness of about 5 mils.

8. An apparatus as set forth in claim 1 wherein said protection device comprises a panel of sheet material having an outer side surface for engagement by the vehicle occupant and having an opposite inner side surface, said adhesive material being disposed on said inner side surface of said panel.

9. An apparatus as set forth in claim 1 further comprising first and second flaps connected with said protection device and covering a first side of said folded portions of said protection device when said protection device is in the folded condition, said flaps being moved out of the inflation path of said protection device when said protection device inflates;

said apparatus further comprising an adhesive material located between and interconnecting said first and second flaps when said protection device is in the folded condition to resist separation of said flaps;

said folded portions of said protection device unfolding and moving against said flaps upon inflation of said protection device;

said adhesive material between said flaps being releasable in response to movement of said folded portions against said flaps to enable separation of said flaps and movement of said protection device to the inflated condition.

10. An apparatus as set forth in claim 9 further comprising a container having a plurality of walls defining a chamber in said container, said folded portions of said protection device being disposed in said chamber in said container, said container walls including a door of said container which is moved out of the inflation path of said protection device by said protection device when said protection device inflates, said first and second flaps being disposed intermediate said first side of said folded portions and said door of said container.

11. A vehicle occupant safety apparatus comprising:

an inflatable vehicle occupant protection device for helping to protect an occupant of a vehicle, said protection device being inflatable from a deflated, folded condition to an inflated, unfolded condition by inflation fluid from an inflation fluid source, said protection device when in the folded condition comprising a stack of folded portions of said protection device;

first and second sheet material flaps connected with said protection device and covering a first side of said stack when said protection device is in the folded condition, said flaps being moved out of the inflation path of said protection device when said protection device inflates;

a container having a plurality of walls defining a chamber in said container, said stack of folded portions of said protection device being disposed in said chamber in said container, said container walls including a door of said container which is moved out of the inflation path of said protection device by said protection device when said protection device inflates, said first and second flaps being disposed intermediate said first side of said stack and said door of said container; and

an adhesive material located between and interconnecting said first and second flaps when said protection device is in the folded condition to resist separation of said flaps;

said folded portions of said protection device unfolding and moving against said flaps upon inflation of said protection device;

said adhesive material being releasable in response to movement of said folded portions against said flaps to enable separation of said flaps and movement of said protection device to the inflated condition.

12. An apparatus as set forth in claim 11 wherein said adhesive material is a tacky acrylic pressure sensitive adhesive material.

13. A vehicle occupant safety apparatus comprising:

an inflatable vehicle occupant protection device for helping to protect an occupant of a vehicle, said protection device being inflatable from a deflated, folded condition to an inflated, unfolded condition by inflation fluid from an inflation fluid source, said protection device when in the folded condition comprising a stack of folded portions of said protection device;

first and second sheet material flaps connected with said protection device and covering a first side of said stack when said protection device is in the folded condition, said flaps being moved out of the inflation path of said protection device when said protection device inflates;

at least one adhesive material located between and releasably interconnecting first and second ones of said folded portions of said protection device when in the folded condition; and

another adhesive material located between and interconnecting said first and second flaps when said protection device is in the folded condition to resist separation of said flaps;

said folded portions of said protection device unfolding and moving against said flaps upon inflation of said protection device;

said another adhesive material being releasable in response to movement of said folded portions against said flaps to enable separation of said flaps and movement of said protection device to the inflated condition.

14. An apparatus as set forth in claim 13 wherein said another adhesive material is a tacky acrylic pressure sensitive adhesive material.