[go: up one dir, main page]

WO2007003395A1 - Générateur de gaz pyrotechnique destiné à la sécurité des véhicules automobiles - Google Patents

Générateur de gaz pyrotechnique destiné à la sécurité des véhicules automobiles Download PDF

Info

Publication number
WO2007003395A1
WO2007003395A1 PCT/EP2006/006454 EP2006006454W WO2007003395A1 WO 2007003395 A1 WO2007003395 A1 WO 2007003395A1 EP 2006006454 W EP2006006454 W EP 2006006454W WO 2007003395 A1 WO2007003395 A1 WO 2007003395A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
partition
plenum chamber
combustion
plate
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/EP2006/006454
Other languages
English (en)
Inventor
Xavier Morvan
Philippe Naulleau
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.)
Autoliv Development AB
Original Assignee
Autoliv Development AB
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 Development AB filed Critical Autoliv Development AB
Priority to DE112006001682T priority Critical patent/DE112006001682T5/de
Publication of WO2007003395A1 publication Critical patent/WO2007003395A1/fr
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
    • B60R21/26—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure
    • 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
    • B60R21/268—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 release of stored pressurised gas
    • B60R21/274—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 release of stored pressurised gas characterised by means to rupture or open the fluid source

Definitions

  • the present invention relates to a pyrotechnic gas generator intended for motor vehicle safety.
  • a pyrotechnic gas generator comprising a tubular envelope closed at its ends and subdivided internally by a pair of partitions which delimit two combustion chambers situated at the ends of the envelope and each communicating, via orifices forming nozzles, with a central plenum chamber, which itself communicates with at least one opening for the outlet of the gas, an opening called a "discharge opening", the partition of at least one of the combustion chambers being furnished with a protective member which prevents the inadvertent igniting of the pyrotechnic charge that it contains under the effect of the combustion gases generated in the other chamber.
  • the gases escaping from the plenum chamber, through the discharge opening, may be used in particular to inflate an airbag intended to protect the occupants of a motor vehicle in the event of an accident.
  • one of the partitions is furnished, on the side of the plenum chamber, with a safety valve (reference number 26) which is the abovementioned protective member. It is a valve with a lobe consisting in an annular shim that is fixedly attached, via a flexible tab, to a central stopper pad capable of pressing against the central orifice of the partition, the orifice that serves as a nozzle.
  • a disadvantage encountered with the known devices is associated with the diversity of the generators, particularly in the dimensions and the shape of the partition, the number of orifices forming nozzles provided in the latter, their position (centred or off- centre) and their profile (cylindrical, conical, bevelled, etc.).
  • valve (s) fitted to the generator.
  • This valve must be adapted each time to the specific features of the generator to be fitted. It must also, in certain cases, particularly if there are several nozzle orifices, be oriented in a specific manner.
  • the present invention aims to resolve these difficulties by fitting the gas generator with a standard, robust, reliable, low cost and easily mounted protective member.
  • this protective member is a thin and brittle plate pressed against the said partition, while normally blocking off the orifice thereof, this plate having zones of less mechanical resistance capable of breaking under the pressure of the combustion gases produced in the said chamber whose partition is furnished with the protective member, so that the parts bordering these zones of less resistance deploy like petals towards the plenum chamber, thus allowing the gases to pass into the latter.
  • the other partition is also furnished with a protective member in the form of a thin and brittle plate similar to that associated with the said partition;
  • the said lines of weakened material are grooves hollowed out in at least one of the faces of the thin plate;
  • the said thin and brittle plate is a flat disc
  • the said lines of weakened material are grooves hollowed out in the two faces of the disc, so that it can be reversibly mounted;
  • the said thin and brittle plate is a disc dished in the central part, whose convexity is turned towards the plenum chamber; - A -
  • the said lines of weakened material are rectilinear grooves disposed diametrically, or substantially diametrically, and crossing in the central region of the disc;
  • the generator comprising a condenser in the form of a cylindrical sleeve mounted in the plenum chamber, the said thin and brittle plate is inserted between the partition against which it is pressed and one end of the said cylindrical sleeve forming the condenser;
  • the partition turned towards the plenum chamber has a central zone indented by a recess so that the orifice or orifices forming nozzle (s) emerge at a certain distance from the thin and brittle plate.
  • the generator comprises a tubular envelope closed at its ends and subdivided internally by a pair of partitions, each one separating a combustion chamber situated at one end of the envelope, which contains a pyrotechnic charge associated with an igniter, from a central plenum chamber communicating with at least one discharge opening made in the wall of the envelope, each partition being traversed by at least one orifice forming a nozzle that allows a controlled passage of the hot gases generated by the combustion of the said pyrotechnic charge from the combustion chamber to the plenum chamber, these gases then being able to escape from the plenum chamber via the said discharge opening, particularly to inflate a protective airbag, in which at least one of the said partitions being furnished with a protective member capable of preventing the inadvertent igniting of the pyrotechnic charge of the combustion chamber - called the "second chamber” which is adjacent thereto by the combustion gases discharged at high speed from the other chamber called the "first chamber” - after they have passed
  • FIG. 1 is a schematic view, in axial section, of a pyrotechnic gas generator of the same general type as that of the invention, forming part of the prior art;
  • FIGS 2 and 3 are views in perspective of two protective members consisting of valves, also forming part of the prior art;
  • Figures 4 and 5 are views similar to those of Figures 2 and 3 respectively, representing two protective members in the form of disc-shaped thin and brittle plates, according to the invention
  • FIG. 6 is a view in section of the protective member of Figure 4, the sectional plane extending diametrically and perpendicular to the plane of the plate, as indicated by the arrows A-A in Figure 4;
  • FIG. 7 is a view in perspective that represents another embodiment of the protective member, in the form of a dished disc;
  • Figure 8 is a partial view similar to that of Figure 1, representing the left part of the generator with its combustion chamber fitted with a protective member similar to that of Figure 4;
  • Figure 9 is a view similar to that of Figure 8, illustrating the operation of the device when the charge present in the said combustion chamber is ignited;
  • FIG. 10 and 11 are detail views representing two possible assemblies of the protective members of Figures 4 and 7 respectively.
  • the pyrotechnic gas generator illustrated in Figure 1 comprises a tubular envelope 1, cylindrical in shape, whose wall 10 is crimped at each of its ends onto generally discoid-shaped rings HA, respectively HB.
  • Reference numbers 101A and 101B indicate the annular flanges, protruding inwards, that lock the wall 10 onto the rings HA, respectively HB.
  • the wall 10 is crimped onto a pair of transverse partitions 5A, 5B mounted inside the envelope .
  • the annular crimping flanges 10OA, IOOB penetrate into a peripheral receiving groove made for this purpose in the partition 5A, respectively 5B.
  • each of these partitions is traversed by one or more orifices forming a nozzle.
  • the partition 5A is pierced by a single central orifice 6A, while the partition 5B comprises two slightly eccentric orifices 5OB and 51B.
  • the envelope 1, the rings 12 and 11, and the partitions 5A and 5B are conventionally made of metal with high mechanical and heat resistances; the envelope 1 is nevertheless made of a metal that is sufficiently ductile to allow the crimping.
  • Each partition 5A, 5B divides the inside of the envelope 1 into two adjacent chambers, one end chamber, called the “combustion chamber” 3OA, respectively 3OB, and the other central chamber, called the “plenum chamber” 40.
  • the generator comprises a pair of igniters 2A, 2B that are each associated with a pyrotechnic charge 3A, respectively 3B; the igniter 2A and the charge 3A are both situated in the combustion chamber 3OA that is situated on the left of the figure, and that will conventionally be called the "second combustion chamber”; the igniter 2B and the charge 3B are both situated in the combustion chamber 3OB that is situated on the right of the figure and that will be conventionally called the "first combustion chamber”.
  • the latter has a greater length than the second chamber, and it contains correlatively a greater pyrotechnic charge.
  • each charge 3A, 3B assumes the general shape of an annular sleeve, of generally cylindrical shape, that is sleeve-fitted inside the wall of the envelope 10.
  • the igniter 2A, 2B is mounted in the central part of the ring HA, respectively HB.
  • the latter support, on their inner face, an annular central skirt 12A, respectively 12B, into which the igniter is sleeve- fitted and held by crimping of the free end portion of the skirt.
  • Each skirt 12 forms, with the associated ring 11, a single piece.
  • Each igniter 2A, 2B penetrates into the inner space of a charge 3A, respectively 3B.
  • the latter is held in place in the associated combustion chamber 3OA, 3OB by appropriate centring means, not shown, and is immobilized in translation by a grid 13A, respectively 13B, in the shape of a dish that is interposed between the charge 3A or 3B and the partition 5A or 5B.
  • Each igniter 2A, 2B is furnished with a pair of pins 21A, respectively 21B, that are intended to allow its connection to a source of electric current.
  • This igniter of a known type, is an electropyrotechnic initiator. It comprises an electric initiation system and a breakable cap enclosing a pyrotechnic compound.
  • this pyrotechnic compound releases a flame and hot gases which, in their turn, cause the combustion of the charge 3A or 3B.
  • the latter consists for example of solid propellant, capable of generating a considerable quantity of gas extremely rapidly.
  • a thin capping plate 6A, 6B Placed in each combustion chamber is a thin capping plate 6A, 6B that is pressed hermetically against a partition 5A, respectively 5B.
  • the nozzle orifices 5OA of the second combustion chamber 3OA and 50B-51B of the first combustion chamber 3OB open into the central plenum chamber 40 that is common thereto.
  • a condenser mounted inside the plenum chamber 40 is a condenser, consisting of a sleeve 4 made of filtering material that is gas-permeable.
  • Its function is to trap certain particles present in the gas generated by the combustion of the charge 3, preventing these particles from leaving the envelope and entering the airbag.
  • the wall 10 of the envelope is pierced by at least one radial hole 400, and preferably by several radial holes, evenly distributed angularly.
  • a deceleration sensor produces an electric signal that is transformed by at least one of the igniters 2A, 2B into a pyrotechnic signal, causing the combustion of the propellant charge 3A and/or 3B.
  • the propellant In the combustion chamber 3OA and/or 3OB, the propellant generates gases whose discharge is controlled by the nozzle orifices.
  • This discharge can occur only when the pressure of the gases generated in a combustion chamber has reached a certain predetermined threshold value causing the cap 6A or 6B to burst.
  • This discharge takes place via the plenum chamber 40, through the filtering wall of the condenser 4, towards the discharge holes 400 inside the airbag.
  • the partition 5A is furnished with a protective member which consists in a V valve whose function is to resist the passage of the gases from the plenum chamber 40 to the second combustion chamber 3OA, while nevertheless allowing the passage in the reverse direction, when the charge 3A is ignited.
  • Figure 2 represents a conventional valve with a single lobe Vl, capable of being adapted to a partition provided with a single nozzle orifice.
  • Figure 3 represents a conventional valve with two lobes V2, capable of being adapted to a partition provided with a pair of nozzle orifices.
  • Similar valves are provided for partitions having more than two nozzle orifices, particularly three.
  • the protective member is a thin and brittle plate.
  • it is cut from a metal strip of uniform thickness, for example of the order of 0.6 mm, having good cold-forming capabilities while being able to withstand the attack of the hot gases generated in the first combustion chamber.
  • the plate is a flat disc. Its diameter corresponds substantially (to within the clearance allowing its installation) to the internal diameter of the wall 10 of the envelope 1.
  • the discoid plate 7 illustrated in Figures 4 and 6 is grooved on only one of its two faces.
  • a pair of rectilinear grooves 70 - 71 is provided that can be produced by stamping or by removal of material; they are placed at right angles, crossing in the centre of the disc. They have a length that is less than the diameter of the disc, so that the peripheral zone of the latter is not grooved.
  • the weakening of the disc arising from this grooving must not be too great so that it can conveniently withstand, without breaking or deforming, the attack of the hot gases generated in the first combustion chamber and present in the plenum chamber.
  • the sectional shape of the groove for example a "U” or a "V”, is of no real importance.
  • the disc 7 is intended to be mounted in the generator so that its grooved face is turned towards the plenum chamber, towards which the broken parts may deploy "like petals". This poses a manufacturing problem, because the washer must be oriented in a defined manner (front on one side and rear on the other) when it is put in place in the generator.
  • the disc may occupy any angular position relative to its central point of symmetry, even if it is associated with several nozzle orifices, which is a worthwhile advantage relative to conventional lobed valves.
  • the discoid plate 8 of Figure 5 is grooved on each of its two faces, by a grooving similar to that of the first embodiment of Figures 4 and 6.
  • two rectilinear "crossed” grooves 80-81 are hollowed out.
  • An identical grooving 80 '-81' is carried out on the opposite face.
  • the two "crosses" are offset angularly by 45° so that the weakening of the disc is distributed evenly.
  • the plate 9 of Figure 7 is a disc that is dished, except in its peripheral border zone that is flat.
  • five grooves 90, 91, 92, 93 and 94 are provided placed "like a star", joining at the centre of the disc.
  • the plate 9 is particularly suitable for being fitted to a partition having several nozzle orifices.
  • the latter is held inside the envelope 1, between the partition 5A and the annular condenser 4. Its grooved face is turned towards the plenum chamber 40.
  • the circular plate 7 closes off virtually hermetically the mouth of the nozzle orifice 5OA.
  • the hot gases that it generates induce therein a high pressure that causes the plate 7 to break along the lines of least resistance 70 - 71; the parts 7 ' bordering the broken lines are pushed away axially by the gases coming out of the nozzle orifice 5OA (arrow F) and are deployed "like petals" in the plenum chamber 40 as illustrated in Figure 9.
  • Figures 10 and 11 represent devices in which the partition 5A is traversed by two nozzle orifices 5OA, 51B.
  • the partition is provided with caps (not shown in the drawings) .
  • caps not shown in the drawings.
  • the caps are therefore calibrated differently to burst at different pressure thresholds.
  • the plate 7 must break.
  • the off-centring of the orifices 5OA and 51A relative to the central axis of the partition 5A causes the hot gases exiting through one and/or other of these orifices to generate a pressure that is not centred on the plate 7. The latter therefore risks not operating by breaking and deforming in optimum conditions.
  • the partition 5A of the device of Figure 10 has a recess 52 formed in its face turned towards the plenum chamber 40.
  • an indentation is arranged that forms a small "buffer" space receiving the gases originating from the combustion chamber 3OA, which makes it possible to distribute the pressure thereof against the whole central portion of the plate 7.
  • a dished plate 9 Associated with the partition 5A is a dished plate 9 like that previously described with reference to Figure 7.
  • the face of the partition 5A turned towards the plenum chamber 40 is flat and not recessed.
  • a plate having lines of weakened material similar to those that have just been described could also be associated additionally with the partition 5B of the first combustion chamber 3OB, within a generator in which the ignition may occur first, selectively, in one or other of the two combustion chambers and -not only as a priority in the first chamber.
  • the zones of weakened material provided in the thin and brittle plates are not necessarily lines; even more so, these rectilinear lines are neither necessarily rectilinear nor made by stamping or removal of material .
  • the plate could be attached at its peripheral border zone to the partition 5, for example by bonding or welding.

Landscapes

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

Abstract

Le générateur de l'invention comprend une enveloppe tubulaire (1) subdivisée intérieurement par une paire de cloisons qui délimitent deux chambres de combustion situées aux extrémités de l’enveloppe (1) et communiquant, par le biais d’orifices formant une buse, avec une chambre plénum centrale (40), qui elle-même communique avec au moins une ouverture de décharge (400), la cloison (5A) d’au moins l’une (30A) des chambres de combustion étant garnie d’un élément de protection empêchant toute mise à feu intempestive de la charge pyrotechnique (3A) qu’elle contient, par les gaz de combustion provenant de l’autre chambre ; cet élément de protection est une plaque mince et friable (7) comprimée contre la cloison (5A) de la chambre (30A) et bloquant normalement l’orifice (50A) de celle-ci, possédant des zones de moindre résistance, comme des rainures, capables de rompre sous la pression des gaz de combustion produits dans la chambre (30A) pour que les pièces (70') bordant ces zones de moindre résistance se déploient comme des pétales vers la chambre plénum (40), laissant alors passer les gaz (F) dans cette dernière. L’invention concerne également un équipement de sécurité pour les véhicules automobiles, en particulier pour le gonflage des airbags.
PCT/EP2006/006454 2005-07-05 2006-07-03 Générateur de gaz pyrotechnique destiné à la sécurité des véhicules automobiles Ceased WO2007003395A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112006001682T DE112006001682T5 (de) 2005-07-05 2006-07-03 Pyrotechnischer Gasgenerator vorgesehen für die Kraftfahrzeugsicherheit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0507183A FR2888315B1 (fr) 2005-07-05 2005-07-05 Generateur pyrotechnique de gaz destine a la securite automobile
FR05/07183 2005-07-05

Publications (1)

Publication Number Publication Date
WO2007003395A1 true WO2007003395A1 (fr) 2007-01-11

Family

ID=36087535

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/006454 Ceased WO2007003395A1 (fr) 2005-07-05 2006-07-03 Générateur de gaz pyrotechnique destiné à la sécurité des véhicules automobiles

Country Status (3)

Country Link
DE (1) DE112006001682T5 (fr)
FR (1) FR2888315B1 (fr)
WO (1) WO2007003395A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9428142B2 (en) 2011-11-22 2016-08-30 Takata AG Gas generator
US9731680B2 (en) 2014-04-23 2017-08-15 Daicel Corporation Inflator
CN110914115A (zh) * 2017-07-26 2020-03-24 天合安全气囊系统有限责任公司 过度点火保护设备、第二点火级、气体发生器以及气囊模块

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3051167B1 (fr) * 2016-05-13 2018-04-27 Autoliv Development Ab Generateur de gaz avec dispositif de regulation de debit

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0613806A1 (fr) * 1993-03-03 1994-09-07 Morton International, Inc. Gonfleur à deux phases
EP0792775A1 (fr) * 1996-02-28 1997-09-03 Morton International, Inc. Générateur de gaz hybride et adaptatif pour airbags
FR2760710A1 (fr) 1997-03-14 1998-09-18 Livbag Snc Generateur pyrotechnique de gaz a debit et volume adaptables pour coussin de protection
US5897136A (en) * 1996-06-26 1999-04-27 Nissan Motor Co., Ltd. Airbag inflator
US6168202B1 (en) * 1998-10-27 2001-01-02 Trw Inc. Pyrotechnic initiator with petal retainer structure
US20030034641A1 (en) * 2001-08-16 2003-02-20 Zimbrich Robert C. Compact multi-level inflator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0613806A1 (fr) * 1993-03-03 1994-09-07 Morton International, Inc. Gonfleur à deux phases
EP0792775A1 (fr) * 1996-02-28 1997-09-03 Morton International, Inc. Générateur de gaz hybride et adaptatif pour airbags
US5897136A (en) * 1996-06-26 1999-04-27 Nissan Motor Co., Ltd. Airbag inflator
FR2760710A1 (fr) 1997-03-14 1998-09-18 Livbag Snc Generateur pyrotechnique de gaz a debit et volume adaptables pour coussin de protection
US6168202B1 (en) * 1998-10-27 2001-01-02 Trw Inc. Pyrotechnic initiator with petal retainer structure
US20030034641A1 (en) * 2001-08-16 2003-02-20 Zimbrich Robert C. Compact multi-level inflator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9428142B2 (en) 2011-11-22 2016-08-30 Takata AG Gas generator
US9731680B2 (en) 2014-04-23 2017-08-15 Daicel Corporation Inflator
CN110914115A (zh) * 2017-07-26 2020-03-24 天合安全气囊系统有限责任公司 过度点火保护设备、第二点火级、气体发生器以及气囊模块
US11498514B2 (en) 2017-07-26 2022-11-15 Trw Airbag Systems Gmbh Overigniting protection device, second ignition stage, gas generator and airbag module

Also Published As

Publication number Publication date
DE112006001682T5 (de) 2008-05-21
FR2888315B1 (fr) 2007-09-21
FR2888315A1 (fr) 2007-01-12

Similar Documents

Publication Publication Date Title
AU677911B2 (en) Stamped metal toroidal hybrid gas generator with sliding piston
US5615912A (en) Inflator for air bag
US8011303B2 (en) Gas generator
EP2167352B1 (fr) Dispositif de ventilation pour un dispositif de gonflage d'airbag
US8651520B2 (en) Inflator
US5542702A (en) Pressurized gas inflator for vehicle occupant protection systems
US5613703A (en) Apparatus for inflating an inflatable vehicle occupant protection device
US7845278B2 (en) Pyrotechnic cup
JP2732560B2 (ja) 乗物搭乗者用拘束具の膨張装置
EP2209672B1 (fr) Gonfleur cylindrique à double étage avec écoulement axial de l'extérieur vers l'intérieur
US20030146611A1 (en) Adaptive output passenger disk inflator
JP3038714U (ja) インフレータ用の内蔵型装薬式起爆装置
US6701849B2 (en) Dual stage air bag inflator with secondary propellant cap
GB2340214A (en) Air bag inflator.
JP3285336B2 (ja) 膨張流体を提供する装置
US11458926B2 (en) Gas generator
US5601308A (en) Inflator, inflation fluid heater and assembly methods
JP2019214358A (ja) インフレータ用の推薬ケージ、このような推薬ケージを備えるインフレータ、インフレータの作動方法、およびインフレータの衝撃波を案内する方法
JPH08253095A (ja) 自動車における安全システムのためのハイブリツドガス発生器
EP0616927B1 (fr) Dispositif de gonflage
US6786507B2 (en) Hybrid gas generator
KR20130041759A (ko) 가스 발생기 및 그의 조립 방법
US9789845B2 (en) Combustion chamber comprising an opening device for a compressed gas tank of a hybrid inflator, hybrid inflator, airbag module, vehicle safety system and method of discharging fluid from an inflator
EP0646763B1 (fr) Pièce de guidage pour un tube d'allumage métallique, comportant des moyens de retenue permanents
JP2013503770A (ja) セーフティバルブを有する乗員保護装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1120060016822

Country of ref document: DE

RET De translation (de og part 6b)

Ref document number: 112006001682

Country of ref document: DE

Date of ref document: 20080521

Kind code of ref document: P

122 Ep: pct application non-entry in european phase

Ref document number: 06776114

Country of ref document: EP

Kind code of ref document: A1