DE20302629U1 - Gas generator comprises has first and/or second section of housing designed so that in event of relative movement of housing sections in relation to one another a minimum value of variable flow passage is maintained - Google Patents

Gas generator comprises has first and/or second section of housing designed so that in event of relative movement of housing sections in relation to one another a minimum value of variable flow passage is maintained

Info

Publication number
DE20302629U1
DE20302629U1 DE20302629U DE20302629U DE20302629U1 DE 20302629 U1 DE20302629 U1 DE 20302629U1 DE 20302629 U DE20302629 U DE 20302629U DE 20302629 U DE20302629 U DE 20302629U DE 20302629 U1 DE20302629 U1 DE 20302629U1
Authority
DE
Germany
Prior art keywords
gas generator
generator according
housing
housing part
fuel
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.)
Expired - Lifetime
Application number
DE20302629U
Other languages
German (de)
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.)
ZF Airbag Germany GmbH
Original Assignee
TRW Airbag Systems GmbH
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 TRW Airbag Systems GmbH filed Critical TRW Airbag Systems GmbH
Priority to DE20302629U priority Critical patent/DE20302629U1/en
Publication of DE20302629U1 publication Critical patent/DE20302629U1/en
Priority to US10/780,387 priority patent/US20040163565A1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B60R21/26—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
    • B60R21/264—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 using instantaneous generation of gas, e.g. pyrotechnic
    • B60R21/2644—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 using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
    • 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
    • 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
    • B60R21/263—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 using a variable source, e.g. plural stage or controlled output
    • B60R2021/2633—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 using a variable source, e.g. plural stage or controlled output with a plurality of inflation levels
    • 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
    • B60R21/264—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 using instantaneous generation of gas, e.g. pyrotechnic
    • B60R21/2644—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 using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
    • B60R2021/2648—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 using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder comprising a plurality of combustion chambers or sub-chambers

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

The gas generator comprises a housing (20) with a first (22) and a second section (24), one or both of which have spacing means (44) which are designed so that in the event of relative movement of the housing sections in relation to one another a minimum value of the variable flow passage is maintained. An overflow opening formed by the two housing sections is completely closed before the activating of the propellant and opens after its activation, whereby the whole fluid flow is through the overflow opening.

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (12)

1. Gasgenerator (10) mit
einem Gehäuse (20) und in das Gehäuse eingebrachten Treibstoff,
wobei der Treibstoff nach Aktivierung ein unter Druck stehendes Fluid freisetzt,
und wobei das Gehäuse (20) einen ersten (22) und einen zweiten Gehäuseteil (24) aufweist, die unter Druck relativ zueinander beweglich sind und eine Überström­ öffnung (46) mit einem druckabhängig variablen Strömungsquerschnitt ausbilden,
dadurch gekennzeichnet, daß der erste (22) und/oder der zweite Gehäuseteil (24) abstandgebende Mittel (44, 48, 50) aufweisen, wobei die abstandgebenden Mittel (44, 48, 50) so ausgelegt sind, daß im Falle der Relativbewegung der Gehäuseteile (22, 24) zueinander ein Mindestwert des variablen Strömungsquerschnitts erhalten bleibt.1. Gas generator ( 10 ) with
a housing ( 20 ) and fuel introduced into the housing,
the fuel releases a pressurized fluid after activation,
and wherein the housing ( 20 ) has a first ( 22 ) and a second housing part ( 24 ) which are movable relative to one another under pressure and form an overflow opening ( 46 ) with a pressure-dependent variable flow cross section,
characterized in that the first ( 22 ) and / or the second housing part ( 24 ) have spacing means ( 44 , 48 , 50 ), the spacing means ( 44 , 48 , 50 ) being designed such that in the event of the relative movement of the Housing parts ( 22 , 24 ) to each other a minimum value of the variable flow cross section is maintained. 2. Gasgenerator nach Anspruch 1, dadurch gekennzeichnet, daß die Über­ strömöffnung (46) vor Aktivierung des Treibstoffs vollständig geschlossen und nach Aktivierung des Treibstoffs geöffnet ist, wobei im wesentlichen der gesamte Fluidstrom durch die Überströmöffnung (46) fließt.2. Gas generator according to claim 1, characterized in that the overflow opening ( 46 ) is completely closed before activation of the fuel and opened after activation of the fuel, with essentially the entire fluid flow flowing through the overflow opening ( 46 ). 3. Gasgenerator nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das erste (22) und das zweite Gehäuseteil (24) im wesentlichen radialsymmetrisch aufgebaut sind.3. Gas generator according to claim 1 or 2, characterized in that the first ( 22 ) and the second housing part ( 24 ) are constructed essentially radially symmetrically. 4. Gasgenerator nach einem der vorhergehenden Ansprüche, dadurch ge­ kennzeichnet, daß das erste (22) und das zweite Gehäuseteil (24) nach der Akti­ vierung des Treibstoffs eine im wesentlichen ringförmige Überströmöffnung (46) ausbilden.4. Gas generator according to one of the preceding claims, characterized in that the first ( 22 ) and the second housing part ( 24 ) after the acti vation of the fuel form a substantially annular overflow opening ( 46 ). 5. Gasgenerator nach einem der vorhergehenden Ansprüche, dadurch ge­ kennzeichnet, daß die Überströmöffnung (46) mehrere voneinander getrennte Öffnungsabschnitte (46a) aufweist. 5. Gas generator according to one of the preceding claims, characterized in that the overflow opening (46) has a plurality of separate opening portions (46 a). 6. Gasgenerator nach einem der vorhergehenden Ansprüche, dadurch ge­ kennzeichnet, daß die abstandgebenden Mittel (44, 48, 50) Sicken (44) sind.6. Gas generator according to one of the preceding claims, characterized in that the spacing means ( 44 , 48 , 50 ) beads ( 44 ). 7. Gasgenerator nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die abstandgebenden Mittel (44, 48, 50) Nuten (48) sind.7. Gas generator according to one of claims 1 to 5, characterized in that the spacing means ( 44 , 48 , 50 ) are grooves ( 48 ). 8. Gasgenerator nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die abstandgebenden Mittel (44, 48, 50) am ersten (22) und/oder zweiten (24) Gehäuseteil geformte Rippen (50) sind.8. Gas generator according to one of claims 1 to 5, characterized in that the spacing means ( 44 , 48 , 50 ) on the first ( 22 ) and / or second ( 24 ) housing part are shaped ribs ( 50 ). 9. Gasgenerator nach einem der vorhergehenden Ansprüche, dadurch ge­ kennzeichnet, daß das erste (22) und das zweite Gehäuseteil (24) vor Aktivierung des Treibstoffs einen gemeinsamen ersten Kontaktbereich (38) ausbilden, wobei der gemeinsame erste Kontaktbereich (38) mit einer Klebeverbindung gesichert ist, und daß das erste (22) und das zweite Gehäuseteil (24) nach Aktivierung des Treibstoffs mehrere gemeinsame zweite Kontaktbereiche (38') ausbilden.9. Gas generator according to one of the preceding claims, characterized in that the first ( 22 ) and the second housing part ( 24 ) form a common first contact area ( 38 ) before activation of the fuel, the common first contact area ( 38 ) with an adhesive connection is secured, and that the first ( 22 ) and the second housing part ( 24 ) form several common second contact areas ( 38 ') after activation of the fuel. 10. Gasgenerator nach einem der vorhergehenden Ansprüche, dadurch ge­ kennzeichnet, daß das erste Gehäuseteil (22) einen Deckelabschnitt (28) und einen Wandabschnitt (30) aufweist und die abstandgebenden Mittel (44, 48, 50) im Ü­ bergangsbereich zwischen Deckel- und Wandabschnitt angeordnet sind.10. Gas generator according to one of the preceding claims, characterized in that the first housing part ( 22 ) has a cover section ( 28 ) and a wall section ( 30 ) and the spacing means ( 44 , 48 , 50 ) in the transition area between cover and Wall section are arranged. 11. Gasgenerator nach einem der vorhergehenden Ansprüche, dadurch ge­ kennzeichnet, daß das zweite Gehäuseteil (24) eine Brennkammerwand bildet.11. Gas generator according to one of the preceding claims, characterized in that the second housing part ( 24 ) forms a combustion chamber wall. 12. Gasgenerator nach Anspruch 11, dadurch gekennzeichnet, daß die ab­ standgebenden Mittel (44, 48, 50) an einem Endabschnitt (36) der Brennkammer­ wand angeordnet sind.12. Gas generator according to claim 11, characterized in that from the existing means ( 44 , 48 , 50 ) are arranged on an end portion ( 36 ) of the combustion chamber wall.
DE20302629U 2003-02-18 2003-02-18 Gas generator comprises has first and/or second section of housing designed so that in event of relative movement of housing sections in relation to one another a minimum value of variable flow passage is maintained Expired - Lifetime DE20302629U1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE20302629U DE20302629U1 (en) 2003-02-18 2003-02-18 Gas generator comprises has first and/or second section of housing designed so that in event of relative movement of housing sections in relation to one another a minimum value of variable flow passage is maintained
US10/780,387 US20040163565A1 (en) 2003-02-18 2004-02-17 Gas generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE20302629U DE20302629U1 (en) 2003-02-18 2003-02-18 Gas generator comprises has first and/or second section of housing designed so that in event of relative movement of housing sections in relation to one another a minimum value of variable flow passage is maintained

Publications (1)

Publication Number Publication Date
DE20302629U1 true DE20302629U1 (en) 2003-06-26

Family

ID=7980144

Family Applications (1)

Application Number Title Priority Date Filing Date
DE20302629U Expired - Lifetime DE20302629U1 (en) 2003-02-18 2003-02-18 Gas generator comprises has first and/or second section of housing designed so that in event of relative movement of housing sections in relation to one another a minimum value of variable flow passage is maintained

Country Status (1)

Country Link
DE (1) DE20302629U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007046824A1 (en) * 2007-09-26 2009-04-09 Takata-Petri Ag Inflator for an airbag module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007046824A1 (en) * 2007-09-26 2009-04-09 Takata-Petri Ag Inflator for an airbag module

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 20030731

R150 Term of protection extended to 6 years

Effective date: 20060223

R151 Term of protection extended to 8 years

Effective date: 20090302

R152 Term of protection extended to 10 years

Effective date: 20110111

R071 Expiry of right
R071 Expiry of right