WO2005035309A2 - Airbag module - Google Patents

Airbag module Download PDF

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Publication number
WO2005035309A2
WO2005035309A2 PCT/US2004/024646 US2004024646W WO2005035309A2 WO 2005035309 A2 WO2005035309 A2 WO 2005035309A2 US 2004024646 W US2004024646 W US 2004024646W WO 2005035309 A2 WO2005035309 A2 WO 2005035309A2
Authority
WO
WIPO (PCT)
Prior art keywords
airbag
housing
slots
flaps
airbag housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2004/024646
Other languages
French (fr)
Other versions
WO2005035309A3 (en
Inventor
Eric Baumbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Joyson Safety Systems Inc
Original Assignee
Joyson Safety Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Joyson Safety Systems Inc filed Critical Joyson Safety Systems Inc
Publication of WO2005035309A2 publication Critical patent/WO2005035309A2/en
Publication of WO2005035309A3 publication Critical patent/WO2005035309A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/217—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
    • B60R21/2171—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together 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

Definitions

  • the present invention relates to an airbag module for a vehicle.
  • An airbag module typically comprises an airbag and an airbag inflator. Both the airbag and the airbag inflator are stored within a housing until deployment of the airbag. When the airbag deploys, the airbag inflator fills the airbag with inflation gas, causing the airbag to expand through a mouth of the housing. To ensure proper deployment of the airbag, the airbag is typically secured to the airbag housing by a retaining frame, which is inserted into the housing and snapped into place. However, this retaining frame adds significant cost to the airbag module. Manufacturers have sought to eliminate the retaining frame. One proposed design attaches the airbag to hooks on the outside of the airbag housing.
  • the present invention comprises an airbag module having an airbag, an airbag inflator and an airbag housing.
  • the airbag module of the present invention has an airbag with flaps and an airbag housing with slots to receive the flaps. The flaps extend through the slots of the airbag housing and are hooked to the exterior surface of the airbag housing. In this way, the airbag is directly attached to the airbag housing, thereby eliminating the need for a retaining ring.
  • Figure 1 illustrates the inventive airbag module, showing airbag with flaps and airbag housing with slots to receive flaps.
  • Figure 2 is a bottom view of the airbag housing of Figure 1 , showing the location of the slots on the airbag housing.
  • Figure 3 is a top view of the airbag housing of Figures 1 and 2, showing the location of the slots relative to an opening of the airbag housing.
  • Figure 4 illustrates the airbag of Figure 1.
  • Figure 5 illustrates how the airbag of Figures 1 and 4 is attached to the airbag housing of Figures 1-3.
  • Figure 1 illustrates an airbag module 10 according to the present invention.
  • the inventive airbag module 10 has an airbag 18, an airbag housing 26 and an airbag inflator 14.
  • the airbag inflator 14 is activated by a crash detection system 16.
  • the crash detection system activates the inflator 14 to release inflation gas into the airbag 18 to cause deployment of the airbag relative to the airbag housing 26 in the direction indicated in the drawing by an arrow A.
  • the inventive airbag module 10 has an airbag 18 with flaps 22 and the airbag housing 26 has slots 30 therein. As shown in Figure 1 , the flaps 22 of the airbag 18 are passed through the slots 30 in the airbag housing 26.
  • the flaps 22 have connecting elements such as holes 34 that secure the flaps 22 to other connecting elements such as hooks 38 on the airbag housing 26.
  • This design not only allows a secure direct connection between the airbag 18 and the airbag housing 26 but also provides a good seal between the airbag 18 and the airbag housing 26 so that inflation gas from the inflator 14 may fill the airbag 18 without significant leakage.
  • Figures 2 and 3 illustrate an airbag housing 26.
  • Figure 2 is a bottom view of the airbag housing 26 and shows the location of the slots 30 relative to the hooks 38. As shown, the slots 30 line the periphery of the airbag housing 26.
  • a slot 33 is located on the side of the housing 26 and is accordingly not visible in Figure 2.
  • FIG 3 illustrates the slots 30 as well as a slot 33 from a top view perspective.
  • the airbag housing 26 has an airbag housing interior 42 and an airbag housing exterior 46. Located within a bottom portion 50 of the interior 42 of the airbag housing 26 is an airbag inflator 14.
  • the airbag housing 26 further has an airbag housing opening 54 to receive folded an airbag 18 (not shown).
  • the airbag housing opening 54 is the opening through which the airbag 18 deploys as shown in Figure 1.
  • Figure 3 illustrates how the slots 30 and a slot 33 surround the airbag housing opening 54.
  • Figure 4 illustrates an airbag 18.
  • the airbag 18 has an airbag opening 24, which is in communication with an airbag inflator 14.
  • the airbag 18 has flaps 22 that extend around the periphery of the airbag opening 24. Connecting elements such as holes 34 are provided in each of flaps 22. The holes 34 are used to attach the airbag 18 to other connecting elements such as hooks 38.
  • Figure 5 illustrates how the airbag 18 is attached to an airbag housing 26. As shown, the flaps 22 are passed through slots 30 in the direction indicated in the drawing by first arrows I. After they pass through slots 30, the flaps 22 are then turned in the direction indicated in the drawing by second arrows F, here a direction generally opposite to the direction of the first arrows I, and folded and hooked over the hooks 38 of the airbag housing 26. In this fashion, the airbag 18 is secured to the airbag housing 26.
  • the drawings show the airbag 18 with eight flaps, eight slots and eight hooks, other designs may use two or more flaps or slots to secure the airbag 18 to the airbag housing 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

An airbag module (10) has an airbag (18), an airbag inflator (14) and an airbag housing (26). The airbag housing (26) has slots (30) therethrough that are spaced around a mouth (54) of the airbag housing (26). There are hooks (38) on the exterior of the airbag housing (26). The airbag (18) has flaps (22) that extend through slots (30) in the airbag housing (26). The flaps (22) have holes (22) therethrough. The hooks (38) extend through the holes (22) in the flaps (22) to secure the airbag (18) to the airbag housing (26).

Description

AIRBAG MODULE
The present invention relates to an airbag module for a vehicle. An airbag module typically comprises an airbag and an airbag inflator. Both the airbag and the airbag inflator are stored within a housing until deployment of the airbag. When the airbag deploys, the airbag inflator fills the airbag with inflation gas, causing the airbag to expand through a mouth of the housing. To ensure proper deployment of the airbag, the airbag is typically secured to the airbag housing by a retaining frame, which is inserted into the housing and snapped into place. However, this retaining frame adds significant cost to the airbag module. Manufacturers have sought to eliminate the retaining frame. One proposed design attaches the airbag to hooks on the outside of the airbag housing. However, such a design allows excessive amounts of inflation gas to leak between the airbag and the exterior surface of the airbag housing. As a consequence, the airbag might under-inflate. A need therefore exists for an improved airbag module that eliminates the retaining frame without the drawback of prior art designs. The present invention comprises an airbag module having an airbag, an airbag inflator and an airbag housing. In contrast to prior art designs, the airbag module of the present invention has an airbag with flaps and an airbag housing with slots to receive the flaps. The flaps extend through the slots of the airbag housing and are hooked to the exterior surface of the airbag housing. In this way, the airbag is directly attached to the airbag housing, thereby eliminating the need for a retaining ring. Moreover, the inventive design provides a better seal between the airbag and the airbag housing than the prior art design. Figure 1 illustrates the inventive airbag module, showing airbag with flaps and airbag housing with slots to receive flaps. Figure 2 is a bottom view of the airbag housing of Figure 1 , showing the location of the slots on the airbag housing. Figure 3 is a top view of the airbag housing of Figures 1 and 2, showing the location of the slots relative to an opening of the airbag housing. Figure 4 illustrates the airbag of Figure 1. Figure 5 illustrates how the airbag of Figures 1 and 4 is attached to the airbag housing of Figures 1-3. Figure 1 illustrates an airbag module 10 according to the present invention. Like prior art airbag modules, the inventive airbag module 10 has an airbag 18, an airbag housing 26 and an airbag inflator 14. The airbag inflator 14 is activated by a crash detection system 16. As known, when a severe crash is detected, the crash detection system activates the inflator 14 to release inflation gas into the airbag 18 to cause deployment of the airbag relative to the airbag housing 26 in the direction indicated in the drawing by an arrow A. Unlike prior art designs, the inventive airbag module 10 has an airbag 18 with flaps 22 and the airbag housing 26 has slots 30 therein. As shown in Figure 1 , the flaps 22 of the airbag 18 are passed through the slots 30 in the airbag housing 26. In addition, the flaps 22 have connecting elements such as holes 34 that secure the flaps 22 to other connecting elements such as hooks 38 on the airbag housing 26. This design not only allows a secure direct connection between the airbag 18 and the airbag housing 26 but also provides a good seal between the airbag 18 and the airbag housing 26 so that inflation gas from the inflator 14 may fill the airbag 18 without significant leakage. Figures 2 and 3 illustrate an airbag housing 26. Figure 2 is a bottom view of the airbag housing 26 and shows the location of the slots 30 relative to the hooks 38. As shown, the slots 30 line the periphery of the airbag housing 26. In Figure 3 a slot 33 is located on the side of the housing 26 and is accordingly not visible in Figure 2. Figure 3 illustrates the slots 30 as well as a slot 33 from a top view perspective. The airbag housing 26 has an airbag housing interior 42 and an airbag housing exterior 46. Located within a bottom portion 50 of the interior 42 of the airbag housing 26 is an airbag inflator 14. The airbag housing 26 further has an airbag housing opening 54 to receive folded an airbag 18 (not shown). Moreover, the airbag housing opening 54 is the opening through which the airbag 18 deploys as shown in Figure 1. Figure 3 illustrates how the slots 30 and a slot 33 surround the airbag housing opening 54. Figure 4 illustrates an airbag 18. As shown, the airbag 18 has an airbag opening 24, which is in communication with an airbag inflator 14. In addition, the airbag 18 has flaps 22 that extend around the periphery of the airbag opening 24. Connecting elements such as holes 34 are provided in each of flaps 22. The holes 34 are used to attach the airbag 18 to other connecting elements such as hooks 38. Figure 5 illustrates how the airbag 18 is attached to an airbag housing 26. As shown, the flaps 22 are passed through slots 30 in the direction indicated in the drawing by first arrows I. After they pass through slots 30, the flaps 22 are then turned in the direction indicated in the drawing by second arrows F, here a direction generally opposite to the direction of the first arrows I, and folded and hooked over the hooks 38 of the airbag housing 26. In this fashion, the airbag 18 is secured to the airbag housing 26. Although the drawings show the airbag 18 with eight flaps, eight slots and eight hooks, other designs may use two or more flaps or slots to secure the airbag 18 to the airbag housing 26.

Claims

CLAIMS:
1. An airbag module (10) comprising: an airbag (18) having an airbag opening (24), the airbag (18) having two or more flaps (22) spaced around the airbag opening (24); an airbag inflator (14) in communication with the airbag opening (24); an airbag housing (26) for storing the airbag (18) and the airbag inflator (14), the airbag housing (26) having two or more slots (30) therethrough to receive the two or more flaps (22), the two or more slots (30) spaced around an airbag housing opening (54) from which the airbag (18) deploys; and each the two or more flaps (22) has a first connection element (34) and the airbag housing (26) has a corresponding number of second connection elements (38), each of the first connection elements (34) secured to a second connection element (38).
2. An airbag module (10) as described in Claim 1 wherein each first connection element comprises a hole (22) through a flap (22) and each second connection element comprises a protrusion (38) extending from the airbag housing (26).
3. An airbag module (10) as described in Claim 2 wherein the protrusions are hooks (38).
4. An airbag module (10) as described in Claim 1 wherein the airbag housing (26) has an interior (42) and an exterior (46), the airbag housing (26) receiving the airbag inflator (14) within the interior (42) and having the second connection element on the exterior (46).
5. An airbag module (10) as described in Claim 4 wherein the airbag housing (26) has a bottom (50) spaced from the airbag housing opening (54), the two or more slots (30) being located between the airbag housing opening (54) and the bottom (50) of the airbag housing.
6. An airbag module (10) as described in Claim 5 wherein the second connection elements (38) are located between the airbag housing opening (54) and the two or more slots (30).
7. An airbag module (10) as described in Claim 4 wherein each flap (22) extends from the interior (42) of the airbag housing (26) through a slot (30) to a second connection element (38) on the exterior (46) of the airbag housing (26).
PCT/US2004/024646 2003-09-24 2004-07-30 Airbag module Ceased WO2005035309A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/668,339 US7029024B2 (en) 2003-09-24 2003-09-24 Air bag housing
US10/668,339 2003-09-24

Publications (2)

Publication Number Publication Date
WO2005035309A2 true WO2005035309A2 (en) 2005-04-21
WO2005035309A3 WO2005035309A3 (en) 2005-07-07

Family

ID=34313463

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/024646 Ceased WO2005035309A2 (en) 2003-09-24 2004-07-30 Airbag module

Country Status (2)

Country Link
US (1) US7029024B2 (en)
WO (1) WO2005035309A2 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004314934A (en) * 2003-04-02 2004-11-11 Takata Corp Airbag device
US7216892B2 (en) * 2004-08-20 2007-05-15 Key Safety Systems, Inc. Air bag door and attachment method
US7290790B2 (en) * 2005-06-28 2007-11-06 International Automotive Components Group North America, Inc. Airbag chute assembly
DE202005013509U1 (en) * 2005-08-26 2005-11-17 Trw Automotive Safety Systems Gmbh Airbag especially for vehicle occupant restraint system has two sections with lower trapezoidal section inflating to give a funnel shape
US7980590B2 (en) * 2008-03-19 2011-07-19 Amsafe, Inc. Inflatable personal restraint systems having web-mounted inflators and associated methods of use and manufacture
US7665761B1 (en) 2008-03-27 2010-02-23 Amsafe, Inc. Inflatable personal restraint systems and associated methods of use and manufacture
US20100045003A1 (en) * 2008-08-20 2010-02-25 Autoliv Asp, Inc. Airbag mounting system and method
DE102009040246A1 (en) * 2009-09-02 2011-04-07 Takata-Petri Ag Airbag module for a vehicle occupant restraint system
US8469397B2 (en) 2011-04-13 2013-06-25 Amsafe, Inc. Stitch patterns for restraint-mounted airbags and associated systems and methods
US8439398B2 (en) 2011-07-29 2013-05-14 Amsafe, Inc. Inflator connectors for inflatable personal restraints and associated systems and methods
US8505963B1 (en) * 2012-02-24 2013-08-13 Autoliv Asp, Inc. Airbag assemblies with strap clamps
US9511866B2 (en) 2012-03-19 2016-12-06 Amsafe, Inc. Structure mounted airbag assemblies and associated systems and methods
US8523220B1 (en) 2012-03-19 2013-09-03 Amsafe, Inc. Structure mounted airbag assemblies and associated systems and methods
US9352839B2 (en) 2014-10-02 2016-05-31 Amsafe, Inc. Active positioning airbag assembly and associated systems and methods
US9944245B2 (en) 2015-03-28 2018-04-17 Amsafe, Inc. Extending pass-through airbag occupant restraint systems, and associated systems and methods
US9925950B2 (en) 2015-04-11 2018-03-27 Amsafe, Inc. Active airbag vent system
US10604259B2 (en) 2016-01-20 2020-03-31 Amsafe, Inc. Occupant restraint systems having extending restraints, and associated systems and methods
US11447091B2 (en) 2020-05-11 2022-09-20 Honda Motor Co., Ltd. Vehicle air bag structural device

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US5542692A (en) * 1994-10-18 1996-08-06 Morton International, Inc. Inflatable cushion assembly and system
GB9704532D0 (en) 1997-03-05 1997-04-23 Alliedsignal Deutschland Gmbh Airbag
US6092833A (en) * 1997-03-14 2000-07-25 Takata Corporation Air bag mounting structure for passenger-side air bag device
DE29815936U1 (en) * 1998-09-04 1998-10-15 TRW Automotive Safety Systems GmbH, 63743 Aschaffenburg Air bag and air bag attachment
US6161865A (en) * 1999-05-28 2000-12-19 Autoliv Asp, Inc. Interlocking airbag attachment and module assembly
US6846005B2 (en) * 2002-12-09 2005-01-25 Key Safety Systems, Inc. Air bag cushion and module

Also Published As

Publication number Publication date
WO2005035309A3 (en) 2005-07-07
US20050062261A1 (en) 2005-03-24
US7029024B2 (en) 2006-04-18

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