WO2003047919A1 - Module de coussin gonflable de securite comportant un boitier et un element de fixation pouvant etre loge sur le boitier, destine a un generateur a gaz et un sac a gaz - Google Patents

Module de coussin gonflable de securite comportant un boitier et un element de fixation pouvant etre loge sur le boitier, destine a un generateur a gaz et un sac a gaz Download PDF

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Publication number
WO2003047919A1
WO2003047919A1 PCT/EP2002/013190 EP0213190W WO03047919A1 WO 2003047919 A1 WO2003047919 A1 WO 2003047919A1 EP 0213190 W EP0213190 W EP 0213190W WO 03047919 A1 WO03047919 A1 WO 03047919A1
Authority
WO
WIPO (PCT)
Prior art keywords
holding part
housing
airbag module
module according
gas generator
Prior art date
Application number
PCT/EP2002/013190
Other languages
German (de)
English (en)
Inventor
Thomas Reiter
Karl-Heinz Sommer
Peter Kleeberg
Jörg ALBERT
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 AU2002365629A priority Critical patent/AU2002365629A1/en
Publication of WO2003047919A1 publication Critical patent/WO2003047919A1/fr

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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

  • Airbag module with housing and holding part which can be fixed on the housing for
  • the invention relates to an airbag module with gas generator, gas bag, housing and a holding part which fixes the gas generator and the gas bag in the housing, has two end wall projections and is fixed in the housing, the gas generator being in at least one end face of the housing and in at least one end wall section formed of the holding part is inserted into the housing and is thereby fixed radially and axially.
  • the gas generator is fixed with its gas bag mouth on the upper edge of the trough-shaped holding part and is by one Holding part wrapping around, strip-shaped fastening tabs fixed to the holding part, wherein the fastening tab extends between the holding part and the inside of the housing when the airbag module is mounted.
  • the known airbag module has the disadvantage of a still complicated structure and complicated assembly.
  • the gas bag can be preassembled with the holding part, a separate fastening tab must be provided on the gas bag.
  • the holding part must be connected to the housing by means of separate screw connections after insertion into the trough-shaped housing and insertion of the gas generator;
  • the openings of the housing and the holding part must be in an aligned position, on the other hand, however, the scope must not be too large to subsequently ensure that the gas generator is securely jammed between the holding part and the housing.
  • the gas generator is screwed to the housing end wall opposite the insertion side of the housing by means of a separate screw, which represents an additional outlay.
  • the gas generator is not sealed off from the insertion opening; only the clamping effect of the holding part and the housing is not sufficient here.
  • the invention is therefore based on the object of providing an airbag module with the generic features which is of simpler construction and requires less installation effort.
  • the basic idea of the invention provides that the holding part with its end wall projections is arranged within the gas bag and the gas bag cover is fixed with its insertion openings to the wall projections of the holding part and that the end wall projections of the holding part are mounted thereon in relation to the end walls of the housing are relatively movable and can be connected to the end walls of the housing when the holding part is inserted into the housing.
  • the advantage of the invention is that the gas bag cover is of a simpler design because the holding part is inserted into the interior of the gas bag and separate fastening tabs are thus avoided. Since the gas generator received by the holding part is thus also located in the interior of the gas bag, there is a better seal to the housing. Since the gas bag fabric surrounds the end wall attachments of the holding part on the outside and would thus hinder the insertion of the folded gas bag with the inside holding part into the housing, the invention expediently provides that the end wall sections of the holding part be mounted opposite the end walls in the housing of the housing are relatively movable, so that when the gas bag package with the holding part is inserted, a distance can be established between the end walls of the housing and the end wall projections of the holding part. After the gas bag package has been inserted, the distance is eliminated by a corresponding movement, and the end wall projections of the holding part are connected to the end walls of the housing.
  • the wall projections of the holding part reach through the openings of the end walls of the housing and protrude from the outside over the housing end walls; this provides a firm connection between the wall projections of the holding part and the end faces of the housing and thus a load transfer from enables the gas generator via the front wall attachments of the holding part to the housing walls if, when the gas bag unfolds, that the holding part and the gas bag fabric wrapping around the gas generator exerts corresponding forces.
  • the wall attachments penetrating the gas bag cover in their insertion openings of the holding part arranged in the interior of the gas bag are provided with designs for sealingly fixing the gas bag cover to the wall attachments;
  • Such designs can be designed, for example, as an axially projecting flange on which the opening of the gas bag cover is fixed.
  • the end wall projections of the holding part are firmly connected to the holding part and the holding part is designed to be displaceable in terms of length.
  • the holding part can be designed to be telescopic in itself, so that it can be inserted into the housing in a pushed-together state, after which the parts of the holding part are pulled apart until the end wall projections bear against the housing end walls and can be connected to them.
  • both end wall attachments can also be arranged pivotably on the holding part.
  • the end wall projections of the holding part can be pivoted inwards onto the holding part with the gas bag fabric attached to them be so that the insertion of the holding part in the housing is not hindered.
  • the wall attachments of the holding part are then folded up into contact with the end walls of the housing and connected to them by pulling on the airbag fabric.
  • latching means for locking the wall extensions of the holding part to the end walls of the housing are formed on the end walls of the housing and / or the end wall projections of the holding part.
  • a movable flap is provided.
  • the flap is formed in one piece with the end wall attachment of the holding part and has a film hinge connected to the end wall attachment of the holding part; alternatively, it can be provided that the flap is designed as a separate component and is held on the holding part, in particular is connected to it by means of a catch. It can also be provided that the flap is movably arranged on the outside of the insert-side housing end wall.
  • locking means are formed on the gas generator and / or flap for locking the gas generator to the flap.
  • the flap is held in its closed position holding the gas generator by spring pretensioning; this prevents rattling movements of the gas generator in the housing.
  • the wall extension of the holding part opposite the wall extension having the insertion opening for the gas generator has a centering pin for fixing the gas generator.
  • the wall attachment opposite the wall attachment of the holding part which has the insertion opening for the gas generator is designed to be resilient, so that changes in length of the gas generator or inaccuracies in construction can be compensated for.
  • beads are formed on the holding part between the end wall attachments of the gas generator and positioning it with respect to the front wall attachments.
  • a flap for securing the gas generator it can be expedient according to one exemplary embodiment of the invention if the flap closing the insertion opening for the gas generator is designed as a plug that can be connected to the gas generator for connecting an ignition plug.
  • the configuration according to the invention advantageously makes it possible to avoid cables running outside the airbag module; it can be provided according to one embodiment of the invention that the holding part is provided with a central ignition connection and a cable leading to at least one further ignition plug part is laid on the holding part. When the holding part with the cable laid thereon is inserted into the housing, it is ensured that no cables run outside the housing.
  • the further ignition plug part is arranged on a flap which is pivotably mounted at the base of the associated wall attachment.
  • the present embodiment of the holding part according to the invention with end wall projections is not limited to the definition of the gas bag and gas generator in the housing; rather, as an additional function, the holding part can also be provided with additional gas guiding surfaces as deflector sections in order to target the gas flow generated by the gas generator after it has been triggered into individual ones Steer sections of the folded gas bag.
  • Airbag module in representation corresponding to Figures 1 a and 1 b with a central ignition connection.
  • FIG. 1 a a holding part 10 is initially shown, which has a wall attachment 11 on each of its two end faces, which, in one-piece construction with the holding part 10, is pivotably mounted on the holding part 10 via a film hinge 12.
  • the left wall extension 11 shown in the drawing is pot-shaped so that it receives the gas generator to be inserted (FIGS. 1 c and d) in a form-fitting manner, and it has a centering pin 15 for this purpose.
  • the opposite wall attachment 11 on the right in FIG. 1 a is provided with an insertion opening 31 for the gas generator.
  • the wall projections 11 are each bent and have a latching opening 14 on their outside.
  • a flap 16 the function of which is still to be described, is arranged on the outside of the right-hand wall extension 11 having the insertion opening 31 for the gas generator via a film hinge 17.
  • raised beads 18 are formed on the holding part 10 between its end wall attachments 11 in the bottom region.
  • the holding part 10 described above is arranged in the interior of an airbag cover 13, which for this purpose has insertion openings, not shown in detail, with which the airbag cover 13 is fixed in a sealing manner on the outside of the wall attachments 11 , by the insertion openings of the gas bag cover 13 on the flange-like wall projections 11 in the area of their latching openings 14.
  • the holding part 10 is mounted in a housing 19 with the wall projections 11 folded, i.e. is inserted, which has end walls 20 provided with openings 21.
  • the wall lugs 11 of the holding part 10 are pivoted upwards after the plugging in, until the front wall lugs of the holding part 10 snap into place with their latching openings in the end walls 20 of the housing 19 and also for pinching the gas bag envelope 13 worries.
  • the end wall projections 11 of the holding part 10 pass through the openings 21 in the housing end walls 20, so that a positive and thus force-transmitting connection is established.
  • housing end walls 20 are shown as walls arranged at right angles to the bottom of the housing 19 in the exemplary embodiment shown, an angle deviating from 90 degrees can also be selected. In such a case, there would also be an angle deviating from 90 degrees between the wall projections 11 and the bottom region of the holding part 10, but this can be achieved in a simple manner due to the film hinge provided in each case. Nevertheless, a horizontal gas generator guide would be given with such a design.
  • a gas generator 22 is then inserted through the insertion opening 31 formed in the corresponding wall extension 11 into the housing 19 and thus also into the gas bag cover 13, the beads 18 for guiding the gas generator 22 in this way ensure that the gas generator 22 is positioned with its end-face centering opening 23 on the centering pin 15 of the wall extension 11 opposite the insertion opening 31 and is thus fixed.
  • the one with the centering pin 15 Wall attachment 1 1 can additionally be made somewhat resilient, so that the gas generator is clamped in and rattling movements are avoided.
  • the flap 16 located on the wall extension 11 having the insertion opening 31 is closed, wherein latching designs can be provided in order to fix the flap 16 to the gas generator, so that the gas generator 22 also on this associated wall extension 11 is set.
  • FIGS. 2 a to d differs from the exemplary embodiment described for FIGS. 1 a to d in that the two end wall projections 11 of the holding part 10 are firmly connected to the holding part 10.
  • the holding part 10 can be displaced in length, for example by means of a telescopic design of its base plate, which is arranged in FIG. 2 a in that the gas bag cover 13 a fold 24 throws.
  • FIG. 2 b again shows the insertion of the pushed-together holding part 10 into the housing 19, after which the wall attachments 11 are pulled apart axially until they lock in accordance with FIG. 2 c with the housing end walls 20 in the manner described.
  • FIGS. 3 a to e show a further embodiment of the holding part, in which, in contrast to the exemplary embodiment shown in FIGS. 1 a - d, only one end wall attachment 11 of the holding part 10 is pivotably arranged, while the other wall attachment 11 is designed to be fixed.
  • the holding part 10 is inserted obliquely into the housing 19 (FIG. 3 b) until the fixed wall extension 11 is positioned in the associated housing end wall 20. Then the holding part 10 can be inserted into the housing 19 with the folded-in further wall extension 11, after which the pivotally mounted wall attachment 1 1 is pivoted until it engages with the housing end wall 20.
  • the holding part 10 can have longitudinal walls 28 running between the end wall projections 11 so that a trough-like structure of the holding part 10 results, within the scope of which the longitudinal walls 28 serve as a deflector function as gas guiding surfaces take. It can also be seen from FIGS. 4 a to c that the flap 16 attached to the wall attachment 11 having the insertion opening 31 can be attached on the end face to one of the two longitudinal walls 28 or else to the bottom part of the holding part 10 by means of the film hinge 17 provided in each case ,
  • the flap 16 can be designed as a plug that can be connected to the gas generator 22 for connecting an ignition plug (not shown); for this purpose the flap 16 has an opening 29 for inserting such an ignition plug; slots 30 are also indicated, which can be used as locking means for locking the flap 16 with the gas generator 22.
  • FIGS. 5 a and b show an exemplary embodiment of a holding part 10, in which the holding part 10 has a central ignition connection 25, from which cables 26 to ignition plug parts arranged on the end faces of the holding part 10 in the region of the wall projections 11 thereof 27 run.
  • the relevant flap 16 is designed accordingly as an ignition plug part 27, which engages with the gas generator 22 when the flap 16 is closed, so that there is an electrical connection between the central ignition connection 25 and the gas generator 22.
  • the same is true for a two-stage design of the gas generator 22 opposite wall approach 1 1 to realize the holding part 10. If the design of the holding part 10 shown in FIG. 5 is installed in the housing 19 of the airbag module in accordance with FIG. 5b, the cable runs are covered.

Abstract

L'invention concerne un module de coussin gonflable de sécurité comportant un générateur à gaz, un sac à gaz, un boîtier, et un élément de fixation fixant le générateur à gaz et le sac à gaz dans le boîtier, présentant deux saillies de paroi frontales, et fixé dans le boîtier. Le générateur à gaz est introduit dans des ouvertures pratiquées dans au moins un côté frontal du boîtier et au moins une saillie de paroi frontale de l'élément de fixation, et est par conséquent fixé radialement et axialement. Selon l'invention, l'élément de fixation (10) et ses saillies de paroi frontales (11) est disposé dans le sac à gaz, l'enveloppe du sac à gaz (13) est fixée aux saillies de paroi frontales (11) de l'élément de fixation (10) avec ses ouvertures d'encastrement, et les saillies de paroi frontales (11) de l'élément de fixation (10) peuvent être déplacées par rapport aux parois frontales (20) du boîtier (19) pour le montage de l'élément de fixation dans le boîtier (19), et être reliées aux parois frontales (20) du boîtier lorsque l'élément de fixation (10) est logé dans le boîtier (19).
PCT/EP2002/013190 2001-12-03 2002-11-23 Module de coussin gonflable de securite comportant un boitier et un element de fixation pouvant etre loge sur le boitier, destine a un generateur a gaz et un sac a gaz WO2003047919A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002365629A AU2002365629A1 (en) 2001-12-03 2002-11-23 Airbag module with a housing and a retaining piece for gas generator and gas bag which may be fixed to the housing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10159024.5 2001-12-03
DE2001159024 DE10159024C1 (de) 2001-12-03 2001-12-03 Airbagmodul mit Gehäuse und an dem Gehäuse festlegbaren Halteteil für Gasgenerator und Gassack

Publications (1)

Publication Number Publication Date
WO2003047919A1 true WO2003047919A1 (fr) 2003-06-12

Family

ID=7707688

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/013190 WO2003047919A1 (fr) 2001-12-03 2002-11-23 Module de coussin gonflable de securite comportant un boitier et un element de fixation pouvant etre loge sur le boitier, destine a un generateur a gaz et un sac a gaz

Country Status (3)

Country Link
AU (1) AU2002365629A1 (fr)
DE (1) DE10159024C1 (fr)
WO (1) WO2003047919A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015219300B3 (de) * 2015-10-06 2017-04-06 Volkswagen Aktiengesellschaft Befestigungsanordnung zur Befestigung eines Gasgenerators
US11130465B2 (en) * 2019-09-12 2021-09-28 Autoliv Asp, Inc. Airbag inflator mounting slots

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0776799A2 (fr) * 1995-11-30 1997-06-04 Morton International, Inc. Boîtier répartiteur de gaz elliptique pour contrÔler l'écoulement de gaz dans un dispositif de sac de sécurité gonflable de véhicule automobile
US5639112A (en) * 1996-02-06 1997-06-17 Trw Vehicle Safety Systems Inc. Air bag module
EP0829397A1 (fr) * 1996-09-16 1998-03-18 Autoliv ASP, Inc. Module à coussin gonflable pour passager utilisant le gonfleur comme élément de structure
DE29806402U1 (de) 1998-04-07 1998-07-30 Trw Repa Gmbh Gassack-Modul
WO1999058374A1 (fr) * 1998-05-08 1999-11-18 Breed Automotive Technology, Inc. Module d'airbag
WO2001081127A1 (fr) * 2000-04-25 2001-11-01 Toyo Tire & Rubber Co., Ltd. Systeme d'airbag

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0776799A2 (fr) * 1995-11-30 1997-06-04 Morton International, Inc. Boîtier répartiteur de gaz elliptique pour contrÔler l'écoulement de gaz dans un dispositif de sac de sécurité gonflable de véhicule automobile
US5639112A (en) * 1996-02-06 1997-06-17 Trw Vehicle Safety Systems Inc. Air bag module
EP0829397A1 (fr) * 1996-09-16 1998-03-18 Autoliv ASP, Inc. Module à coussin gonflable pour passager utilisant le gonfleur comme élément de structure
DE29806402U1 (de) 1998-04-07 1998-07-30 Trw Repa Gmbh Gassack-Modul
WO1999058374A1 (fr) * 1998-05-08 1999-11-18 Breed Automotive Technology, Inc. Module d'airbag
WO2001081127A1 (fr) * 2000-04-25 2001-11-01 Toyo Tire & Rubber Co., Ltd. Systeme d'airbag

Also Published As

Publication number Publication date
DE10159024C1 (de) 2002-11-14
AU2002365629A1 (en) 2003-06-17

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