WO2007006802A3 - A gas diffuser device for car safety - Google Patents

A gas diffuser device for car safety Download PDF

Info

Publication number
WO2007006802A3
WO2007006802A3 PCT/EP2006/064168 EP2006064168W WO2007006802A3 WO 2007006802 A3 WO2007006802 A3 WO 2007006802A3 EP 2006064168 W EP2006064168 W EP 2006064168W WO 2007006802 A3 WO2007006802 A3 WO 2007006802A3
Authority
WO
WIPO (PCT)
Prior art keywords
gas
airbag
generator
car safety
chamber
Prior art date
Application number
PCT/EP2006/064168
Other languages
French (fr)
Other versions
WO2007006802A2 (en
Inventor
Bernard Dechoux
Aurelie Chauvin
Original Assignee
Autoliv Dev
Bernard Dechoux
Aurelie Chauvin
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 Autoliv Dev, Bernard Dechoux, Aurelie Chauvin filed Critical Autoliv Dev
Publication of WO2007006802A2 publication Critical patent/WO2007006802A2/en
Publication of WO2007006802A3 publication Critical patent/WO2007006802A3/en

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
    • B60R21/23—Inflatable members
    • B60R21/239—Inflatable members characterised by their venting means
    • 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
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • 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
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/261—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means other than bag structure to diffuse or guide inflation fluid
    • 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
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R2021/26094—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow characterised by fluid flow controlling valves

Abstract

The invention relates to a gas diffuser device (1) comprising a gas generator (2) suitable for being triggered in the event of an impact to inflate an airbag (4) for protecting the occupants of a motor vehicle, and a diffuser chamber (3) for diffusing said gas, the chamber being connected to said generator (2) and being provided with at least one open exhaust orifice (314, 322) for allowing the gas to be exhausted into the inside of said airbag (4) as soon as the generator (2) is triggered, said orifice defining a gas exhaust passage having an initial area (Ai). The device is remarkable in that the area of said exhaust passage increases so as to reach a final value (Af) greater than the value of said initial area (Ai) as soon as the pressure inside said diffuser chamber (3) exceeds a predetermined threshold value, such that the curve plotting the accumulated inflation flow into the airbag (4) as a function of time presents an S-shape. The invention is applicable to car safety.
PCT/EP2006/064168 2005-07-13 2006-07-12 A gas diffuser device for car safety WO2007006802A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0507575A FR2888548B1 (en) 2005-07-13 2005-07-13 GAS DIFFUSION DEVICE FOR MOTOR VEHICLE SAFETY
FR0507575 2005-07-13

Publications (2)

Publication Number Publication Date
WO2007006802A2 WO2007006802A2 (en) 2007-01-18
WO2007006802A3 true WO2007006802A3 (en) 2007-03-22

Family

ID=36123130

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/064168 WO2007006802A2 (en) 2005-07-13 2006-07-12 A gas diffuser device for car safety

Country Status (2)

Country Link
FR (1) FR2888548B1 (en)
WO (1) WO2007006802A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5770978B2 (en) * 2010-04-19 2015-08-26 株式会社ダイセル Gas generator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021058A (en) * 1974-10-30 1977-05-03 Nippon Soken, Inc. Safety bag device for vehicle
DE19703172A1 (en) * 1997-01-29 1998-08-06 Bayerische Motoren Werke Ag Inflatable vehicle occupant restraint system
GB2323568A (en) * 1997-03-24 1998-09-30 Autoliv Dev Reducing airbag forward speed
US20040261409A1 (en) * 2003-06-27 2004-12-30 Trw Airbag Systems Gmbh Gas generator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6283499B1 (en) 1997-02-19 2001-09-04 Sandia Corporation Airbag device having an inner flexible heat shield and flow direction bag
DE19858690A1 (en) 1998-12-18 2000-06-21 Delphi Automotive Systems Gmbh Airbag
US20020033590A1 (en) 2000-03-15 2002-03-21 Rick Adkisson Air bag diffusion device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021058A (en) * 1974-10-30 1977-05-03 Nippon Soken, Inc. Safety bag device for vehicle
DE19703172A1 (en) * 1997-01-29 1998-08-06 Bayerische Motoren Werke Ag Inflatable vehicle occupant restraint system
GB2323568A (en) * 1997-03-24 1998-09-30 Autoliv Dev Reducing airbag forward speed
US20040261409A1 (en) * 2003-06-27 2004-12-30 Trw Airbag Systems Gmbh Gas generator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "Air bag inflator", RESEARCH DISCLOSURE, MASON PUBLICATIONS, HAMPSHIRE, GB, vol. 407, no. 36, March 1998 (1998-03-01), XP007122432, ISSN: 0374-4353 *

Also Published As

Publication number Publication date
FR2888548B1 (en) 2008-09-12
WO2007006802A2 (en) 2007-01-18
FR2888548A1 (en) 2007-01-19

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