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FR2715902A1 - Fixing device for cover for air bags - Google Patents

Fixing device for cover for air bags Download PDF

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Publication number
FR2715902A1
FR2715902A1 FR9401296A FR9401296A FR2715902A1 FR 2715902 A1 FR2715902 A1 FR 2715902A1 FR 9401296 A FR9401296 A FR 9401296A FR 9401296 A FR9401296 A FR 9401296A FR 2715902 A1 FR2715902 A1 FR 2715902A1
Authority
FR
France
Prior art keywords
cover
support member
groove
edge
wings
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.)
Granted
Application number
FR9401296A
Other languages
French (fr)
Other versions
FR2715902B1 (en
Inventor
Goisset Bernard
Salez Jean-Philippe
Hoblingre Andre
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.)
ECIA Equipements et Composants pour lIndustrie Automobile SA
Original Assignee
ECIA Equipements et Composants pour lIndustrie Automobile SA
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 ECIA Equipements et Composants pour lIndustrie Automobile SA filed Critical ECIA Equipements et Composants pour lIndustrie Automobile SA
Priority to FR9401296A priority Critical patent/FR2715902B1/en
Publication of FR2715902A1 publication Critical patent/FR2715902A1/en
Application granted granted Critical
Publication of FR2715902B1 publication Critical patent/FR2715902B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/217Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together

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

Abstract

The device for fixing the cover on an inflatable sack on its support structure (1) is designed to be attached to the support structure. The support structure is formed with a groove (2), which has a cross section generally of a U-shape, formed by the two wings (3,4), which are formed parallel to the edge of the element of the support structure. The U-shaped groove is designed to receive the corresponding edge (5) of the cover (6). Each of the wings, forming the groove, and the corresponding edge of the cover, carry projecting edges and corresponding recesses to lock the cover into the support structure.

Description

La présente invention concerne un dispositif de The present invention relates to a device for

fixation d'un couvercle de module & sac gonflable sur un organe de support de celui-ci.fixing of a module cover & airbag on a support member thereof.

Ces modules & sac gonflable comprennent généra lement un boitier de réception du sac sur lequel est fixé un couvercle déchirable lors du gonflage de celui-ci. These modules & inflatable bag generally comprise a box for receiving the bag on which a tear-off cover is fixed when it is inflated.

Ces modules à sac gonflable sont par exemple intégrés dans les coussins centraux des volants de direction des véhicules automobiles ou encore dans les planches de bord de ceux-ci du côté du passager avant lu véhicule. These airbag modules are for example integrated in the central cushions of the steering wheels of motor vehicles or in the dashboards thereof on the side of the front passenger lu vehicle.

La fixation du couvercle sur l'organe de support de celui-ci est assurée dans l'état de la technique par exemple par rivetage. The fixing of the cover on the support member thereof is ensured in the state of the art, for example by riveting.

On conçoit que cette fixation présente un certain nombre d'inconvénients notamment au niveau des difficultés de réalisation d'un tel rivetage sur une chaine de fabrication et du fait que lors du gonflage du sac, des parties de ces éléments peuvent être projetées dans l'habitacle du vehlcule, ce qui augmente les risques de blessure des passagers. It will be appreciated that this attachment has a certain number of drawbacks, in particular at the level of the difficulties of producing such riveting on a production line and of the fact that during inflation of the bag, parts of these elements can be projected into the interior of the vehicle, which increases the risk of injury to passengers.

Le but de 1 ' invention est donc de résoudre ces problèmes en proposant un dispositif de fixation qui soit simple, fiable et facile a mettre on oeuvre. The object of the invention is therefore to solve these problems by proposing a fixing device which is simple, reliable and easy to implement.

A cet effet, l'invention a pour objet un dispositif de fixation d'un couvercle de module à sac gonflable sur un organe de support de celui-ci, caractérisé en ce que ledit organe de support comporte une gorge de section de forme générale en U délimitée entre deux ailes a peu prés parallèles de cet organe et adaptée pour recevoir un bord correspondant du couvercle, la ou chaque aile délimi- tant la gorge de l'organe et le bord correspondant du couvercle comportant des parties en saillie ot en creux transversales corrospondantes de fixation par ,ertlssage du couvercle siir L'organe.  To this end, the subject of the invention is a device for fixing a cover of an airbag module to a support member thereof, characterized in that said support member comprises a groove of cross section of general shape in U delimited between two almost parallel wings of this member and adapted to receive a corresponding edge of the cover, the or each wing delimiting the groove of the member and the corresponding edge of the cover comprising protruding parts ot transverse hollows corrospondantes of fixing by, ertlssage of the cover siir The organ.

L'invention sera mieur comprise à la lecture de 13 description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels :
- la Fig.l représente une vue en perspectlve d'une partie d'un dispositif de fixation selon l'inven- tion; et
- les Fig.2 à 5 représentent des vues en coupe illustrant différents modes de rFalisation du dispositif de fixation selon l'invention.
The invention will be better understood on reading the description which follows, given solely by way of example and made with reference to the appended drawings, in which:
- Fig.l shows a perspective view of part of a fixing device according to the invention; and
- Fig.2 to 5 show sectional views illustrating different modes of rFalisation of the fixing device according to the invention.

Les structures des modules à sac gonflable destinés à etre intégrés par exemple dans les véhicules automobiles, étant bien connues dans l'état de la technique, on ne les décrira pas dans le détail. The structures of the airbag modules intended to be integrated for example in motor vehicles, being well known in the state of the art, they will not be described in detail.

On notera cependant qu'un module a sac gonflable est généralement disposé dans un boîtier comportant un organe de support, tel que par exemple une plaque de support, sur lequel est fixé un couvercle déchirable lors du gonflage du sac. Note however that an inflatable bag module is generally arranged in a housing comprising a support member, such as for example a support plate, on which is fixed a tearable cover during inflation of the bag.

Ainsi qu'on l'a mentionné précédemment, les solutions de fixation par rivetage du couvercle sur l'organe de support présentent un certain nombre d'incon vénients.  As mentioned above, the solutions for fastening the cover on the support member by riveting have a number of disadvantages.

Pour résoudre ces problèmes, et comme on peut le voir sur la figure 1, dans le dispositif de fixation selon l'invention, l'organe de support désigné par la référence générale 1 comporte une gorge de section de forme générale en U désignée par la référence générale 2, délimitée entre deux ailes 3 et 4 a peu prés parallèles de cet organe, cette gorge étant adaptée pour recevoir un bord correspondant 5 du couvercle du module désigné par la référence générale 6. To solve these problems, and as can be seen in FIG. 1, in the fixing device according to the invention, the support member designated by the general reference 1 comprises a groove of generally U-shaped section designated by the general reference 2, delimited between two wings 3 and 4 which are roughly parallel to this member, this groove being adapted to receive a corresponding edge 5 of the cover of the module designated by the general reference 6.

Cette gorge peut par exemple être une qorge périphérique de l'organe de support et être adaptée pour recevoir un bord periphérique du couvercle.  This groove may for example be a peripheral groove of the support member and be adapted to receive a peripheral edge of the cover.

De plus, et comme cela est illustré sur les figures 2 à 5, la ou chaque aile délimitant la gorge de l'organe et le bord correspondant du couvercle, comportent des parties en saillie et en creux transversales correspondantes de fixation par sertissage du couvercle sur l'organe. In addition, and as illustrated in FIGS. 2 to 5, the or each wing delimiting the groove of the member and the corresponding edge of the cover, comprise projecting parts and corresponding transverse recesses for fixing by crimping the cover onto the organ.

Sur ces figures 2 à 5, des numéros de référence identiques ont été utilisés pour désigner des éléments identiques a ceux représentés sur la figure 1. In these FIGS. 2 to 5, identical reference numbers have been used to designate elements identical to those represented in FIG. 1.

On reconnalt en effet sur ces figures 2 à 5, l'organe de support 1, les ailes 3 et 4 délimitant la gorge 2 de celui-ci et le bord correspondant 5 du couvercle 6. In FIGS. 2 to 5, the support member 1, the wings 3 and 4 delimiting the groove 2 thereof and the corresponding edge 5 of the cover 6 are recognized.

Dans le mode de réalisation représenté sur la figure 2, le bord correspondant 5 du couvercle 6 comporte un évidement 7 dans lequel est engagée une patte repliée 8 de l'aile 3 de 1'organe de support 1, cette patte repliée 8 formant une partie en saillie transversale s'engageant dans la partie en creux transversale complb- mentaire du bord du couvercle pour fixer ceux-ci l'un à l'autre. In the embodiment shown in Figure 2, the corresponding edge 5 of the cover 6 has a recess 7 in which is engaged a folded tab 8 of the wing 3 of the support member 1, this folded tab 8 forming a part in transverse projection engaging in the complementary transverse hollow part of the edge of the cover to fix them to each other.

Cette patte repliée peut par exemple etre obtenue par emboutissage de l'ensemble une fois que le bord correspondant du couvercle a été engagé dans la gorge de I'organe de support. This folded tab can for example be obtained by stamping the assembly once the corresponding edge of the cover has been engaged in the groove of the support member.

Cependant, et comme on peut le voir sur la figure 3, une patte repliée en sillie transversale peut egalement être ménagée a partir de l'aile 4 de l'organe de support 1. Cette patte en saillie transversale désignês par la référence générale 9 sur cette figure 3 est obtenue par exemple par emboutissage de cette aile, une fois que le bord 5 est engagé dans la gorge 2, ce qui provoque une déformation en creux comlémentaire du bord correspondant 5 du couvercle 6 afin d'assurer la fixation < I < 'S deux éléments l'un sur l'autre.  However, and as can be seen in FIG. 3, a lug folded in transverse projection can also be formed from the wing 4 of the support member 1. This lug in transverse projection designated by the general reference 9 on this Figure 3 is obtained for example by stamping this wing, once the edge 5 is engaged in the groove 2, which causes a complementary hollow deformation of the corresponding edge 5 of the cover 6 in order to ensure the fixing <I < There's two elements on top of each other.

Il va de soi bien entendu cou-e on peut le voir sur la figure 4, que des crevés complémentaires peuvent être formés par emboutissage dans les ailes 3 et 4 de l'organe de support 1, ces crevés désignes par les rFf6- rences 10 et il étant en regard l'un de l'autre et permettant d'obtenir des déformations correspondantes du bord 5 du couvercle, coopérant avec ces crevés pour bloquer le bord du couvercle dans la gorge de 1'organe de support. It goes without saying of course neck-e can be seen in Figure 4, that additional punctures can be formed by stamping in the wings 3 and 4 of the support member 1, these punctures designated by the references 10 and it being opposite one another and making it possible to obtain corresponding deformations of the edge 5 of the cover, cooperating with these punctures to block the edge of the cover in the groove of the support member.

Enfin, et comme on peut le voir sur la figure 5, l'aile 4 de l'organe de support 1 peut également être munie d'un évidement 12 en regard d'un crevé ou d'une partie en saillie sransversale 13 de l'autre aile 3, obtenu par exemple par emboutissage de cette aile, ce qui permet de réaliser des déformations du bord correspondant du couvercle afin d'assurer la fixation de ces éléments l'un sur l'autre. Finally, and as can be seen in FIG. 5, the wing 4 of the support member 1 can also be provided with a recess 12 facing a puncture or with a transverse projecting part 13 of the 'other wing 3, obtained for example by stamping this wing, which allows for deformations of the corresponding edge of the cover to ensure the fixing of these elements one on the other.

Il va de soi bien entendu que d'autres modes de réalisation de ces parties en saillie et en creux peuvent être envisagés. It goes without saying of course that other embodiments of these protruding and recessed parts can be envisaged.

On conçoit alors que le dispositif de fixation selon l'invention est extrêssient fiable et facile à mettre en oeuvre dans la mesure où il ne nécessite plus de pièces supplémentaires, telles que des rivets, pour assurer la fixation du couvercle sur l'organe de support du module a sac gonflable.  It can therefore be seen that the fixing device according to the invention is extremely reliable and easy to implement insofar as it no longer requires additional parts, such as rivets, to secure the cover to the support member. of the airbag module.

Claims (3)

REVENDICATIONS 1. Dispositif de fixation d'un couvercle de module a sac gonflable sur un organe de support de celui- ci, caractérisé en ce que ledit organe de support (1) comporte une gorge (2) de section de forme gFnFrale en U déllmltde entre deux ailes (3,4) à peu prêts parallèles de cet organe (1) et adaptée pour recevoir un bord correspondant (5) du couvercle (6), la ou chaque aile (3;4) délimi- tant la gorge de l'organe et le bord correspondant (5) du couvercle comportant des parties en saillie et en creur transversales correspondantes de fixation par sertissage du couvercle sur l'organe 1. Device for attaching an airbag module cover to a support member for the latter, characterized in that said support member (1) has a groove (2) of gFnFrale cross section in a U shape between two wings (3,4) roughly parallel to this member (1) and adapted to receive a corresponding edge (5) of the cover (6), the or each wing (3; 4) delimiting the groove of the member and the corresponding edge (5) of the cover having corresponding transverse protruding and protruding parts for fixing by crimping the cover on the member 2. Dispositif selon la revendication 1, caract*- rise en ce que le bord correspondant (5) du couvercle (6) comporte un évidement (7) dans lequel s'étend une patte repliée (8) d'une aile de ltorgene.  2. Device according to claim 1, char * - rise in that the corresponding edge (5) of the cover (6) comprises a recess (7) in which extends a folded tab (8) of a wing of ltorgene. 3. Dispositif selon la revendication 1, caractA- risé en ce que les parties en saillie et en creux transversales correspondantes des ailes de l'organe de support (1) et du bord du couvercle (6! sont formées par des crevés et des portions en creux (9,10,11,12,13) obtenues par emboutissage de ceux-ci.  3. Device according to claim 1, characterized in that the corresponding transverse recessed and protruding parts of the wings of the support member (1) and of the edge of the cover (6! Are formed by punctures and portions intaglio (9,10,11,12,13) obtained by stamping them.
FR9401296A 1994-02-04 1994-02-04 Device for attaching an airbag module cover to a support member for the latter. Expired - Fee Related FR2715902B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9401296A FR2715902B1 (en) 1994-02-04 1994-02-04 Device for attaching an airbag module cover to a support member for the latter.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9401296A FR2715902B1 (en) 1994-02-04 1994-02-04 Device for attaching an airbag module cover to a support member for the latter.

Publications (2)

Publication Number Publication Date
FR2715902A1 true FR2715902A1 (en) 1995-08-11
FR2715902B1 FR2715902B1 (en) 1996-04-26

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ID=9459805

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FR9401296A Expired - Fee Related FR2715902B1 (en) 1994-02-04 1994-02-04 Device for attaching an airbag module cover to a support member for the latter.

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Country Link
FR (1) FR2715902B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0655368A2 (en) * 1993-11-22 1995-05-31 Bridgestone Corporation Air bag unit and assembling method and apparatus therefor
EP0754600A1 (en) * 1995-07-21 1997-01-22 Textron Inc. Improved spring retainer air bag mounting device
WO1997037875A1 (en) * 1996-04-04 1997-10-16 Breed Automotive Technology, Inc. Airbag
EP0810127A2 (en) * 1996-05-31 1997-12-03 Autoliv ASP, Inc. Airbag module cover attachment and method of attaching a module cover to an airbag module

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2662411A1 (en) * 1990-05-24 1991-11-29 Takata Corp PNEUMATIC CUSHION DEVICE.
JPH04169356A (en) * 1990-10-31 1992-06-17 Nippon Plast Co Ltd Air bag device
US5201541A (en) * 1991-06-19 1993-04-13 General Motors Corporation Occupant restraint module
US5275432A (en) * 1992-10-30 1994-01-04 Alliedsignal Inc. Air bag deployment door with snap fit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2662411A1 (en) * 1990-05-24 1991-11-29 Takata Corp PNEUMATIC CUSHION DEVICE.
JPH04169356A (en) * 1990-10-31 1992-06-17 Nippon Plast Co Ltd Air bag device
US5201541A (en) * 1991-06-19 1993-04-13 General Motors Corporation Occupant restraint module
US5275432A (en) * 1992-10-30 1994-01-04 Alliedsignal Inc. Air bag deployment door with snap fit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 16, no. 471 (M - 1318) 30 September 1992 (1992-09-30) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0655368A2 (en) * 1993-11-22 1995-05-31 Bridgestone Corporation Air bag unit and assembling method and apparatus therefor
EP0655368A3 (en) * 1993-11-22 1995-10-25 Bridgestone Corp Air bag unit and assembling method and apparatus therefor.
US6173987B1 (en) 1993-11-22 2001-01-16 Bridgestone Corporation Air bag apparatus
EP0754600A1 (en) * 1995-07-21 1997-01-22 Textron Inc. Improved spring retainer air bag mounting device
WO1997037875A1 (en) * 1996-04-04 1997-10-16 Breed Automotive Technology, Inc. Airbag
EP0810127A2 (en) * 1996-05-31 1997-12-03 Autoliv ASP, Inc. Airbag module cover attachment and method of attaching a module cover to an airbag module
EP0810127A3 (en) * 1996-05-31 1998-07-08 Autoliv ASP, Inc. Airbag module cover attachment and method of attaching a module cover to an airbag module

Also Published As

Publication number Publication date
FR2715902B1 (en) 1996-04-26

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