FR2721877A1 - Cover for air bag concealed in e.g. bodywork panel of motor vehicle - Google Patents

Cover for air bag concealed in e.g. bodywork panel of motor vehicle Download PDF

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Publication number
FR2721877A1
FR2721877A1 FR9408088A FR9408088A FR2721877A1 FR 2721877 A1 FR2721877 A1 FR 2721877A1 FR 9408088 A FR9408088 A FR 9408088A FR 9408088 A FR9408088 A FR 9408088A FR 2721877 A1 FR2721877 A1 FR 2721877A1
Authority
FR
France
Prior art keywords
flap
structure according
frame
motor vehicle
air bag
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
FR9408088A
Other languages
French (fr)
Other versions
FR2721877B1 (en
Inventor
Yves Heranney
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 FR9408088A priority Critical patent/FR2721877B1/en
Publication of FR2721877A1 publication Critical patent/FR2721877A1/en
Application granted granted Critical
Publication of FR2721877B1 publication Critical patent/FR2721877B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
    • B60R21/2165—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member characterised by a tear line for defining a deployment opening
    • 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
    • B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
    • B60R2021/21537—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member characterised by hinges

Landscapes

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

Abstract

The vehicle structure (2) has a trim (3) attached to it, with a trim (3) separated by a foam-filled cavity (4). The two-part plastic panel (7a,b) is fixed to the edges (8,9) of the aperture in the bodywork, and is hinged at the points (10,11). The halves of the panel are joined at the weak link (13). When the air bag is inflated, the weak link ruptures, allowing the bag to expand, blowing away the trim. The panel is made of re-cyclable material.

Description

La présente invention concerne une structure de recouvrement d'un module à sac gonflable implanté dans un organe d'un véhicule automobile. The present invention relates to a covering structure of an airbag module implanted in a member of a motor vehicle.

On connait déjà dans l'état de la technique, des structures de recouvrement de ce type qui comportent une armature de support sur laquelle est disposé un garnissage et dans laquelle est ménagé un passage obturé par au moins un volet articulé sur l'armature et escamotable par le sac lors de son gonflage. Are already known in the prior art, covering structures of this type which include a support frame on which is arranged a lining and in which is formed a passage closed by at least one flap articulated on the frame and retractable by the bag during inflation.

Différents modes de réalisation de ces volets d'obturation escamotables ont déjà été décrits dans l'état de la technique. Different embodiments of these retractable shutter flaps have already been described in the prior art.

C'est ainsi par exemple que ces volets peuvent être constitués par des volets plats, par exemple en aluminium, dont les bords sont fixés sur l'armature, ces volets comportant des zones de rupture préférentielle lors du gonflage du sac pour permettre l'escamotage de ceux-ci. Thus, for example, these flaps can be constituted by flat flaps, for example made of aluminum, the edges of which are fixed to the frame, these flaps comprising zones of preferential rupture during inflation of the bag to allow retraction. of these.

D'autres volets également connus dans l'état de la technique, se présentent sous la forme d'une plaque en matière plastique reliée au reste de l'armature de support par l'intermédiaire d'organes métalliques formant articulation et autour desquels sont surmoulés d'une part le volet et d'autre part l'armature de support, lors de leur réalisation. Other components also known in the prior art, are in the form of a plastic plate connected to the rest of the support frame by means of metal members forming a joint and around which are overmolded. on the one hand the flap and on the other hand the support frame, during their production.

On conçoit que tous ces volets présentent un certain nombre d'inconvénients, au niveau de leur rigidité insuffisante, de leur coût de fabrication ou encore des difficultés de recyclage de ceux-ci. It is understood that all these components have a certain number of drawbacks, in terms of their insufficient rigidity, their manufacturing cost or even difficulties in recycling them.

Le but de l'invention est donc de résoudre ces problèmes. The object of the invention is therefore to solve these problems.

A cet effet, l'invention a pour objet une structure de recouvrement d'un module à sac gonflable implanté dans un organe d'un véhicule automobile, du type comportant une armature de support sur laquelle est disposé un garnissage et dans laquelle est ménagé un passage obturé par au moins un volet articulé sur l'armature et escamotable par le sac lors de son gonflage, caractérisée en ce que le volet est en matière thermoplastique et présente une section de forme générale en V inversé dont l'angle d'ouverture entre les branches est compris entre environ 100" et environ 1600.  To this end, the subject of the invention is a covering structure of an airbag module installed in a member of a motor vehicle, of the type comprising a support frame on which a lining is arranged and in which is provided a passage closed by at least one flap articulated on the frame and retractable by the bag during its inflation, characterized in that the flap is made of thermoplastic material and has a generally V-shaped section inverted whose opening angle between the branches is between approximately 100 "and approximately 1600.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels
- les Fig.l et 2 représentent des vues en coupe de premier et second modes de réalisation d'une structure de recouvrement 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 accompanying drawings, in which
- Fig.l and 2 show sectional views of the first and second embodiments of a covering structure according to the invention.

On reconnaît sur ces figures, une structure de recouvrement d'un module à sac gonflable implanté dans un organe d'un véhicule automobile. We recognize in these figures, a covering structure of an airbag module located in a member of a motor vehicle.

Cette structure désignée par la référence générale 1 peut être adaptée pour recouvrir un module à sac gonflable implanté par exemple dans une planche de bord ou encore dans un coussin central de volant de direction d'un véhicule automobile. This structure designated by the general reference 1 can be adapted to cover an airbag module installed for example in a dashboard or in a central steering wheel cushion of a motor vehicle.

Cette structure de recouvrement comporte une armature de support désignée par la référence générale 2 sur ces figures, sur laquelle est disposé un garnissage désigné par la référence générale 3, ce garnissage comportant par exemple de manière connue en soi une couche de mousse de rembourrage 4 sur laquelle est disposée une peau d'aspect 5. This covering structure comprises a support frame designated by the general reference 2 in these figures, on which is disposed a lining designated by the general reference 3, this lining comprising for example in a manner known per se a layer of padding foam 4 on which is arranged a skin of aspect 5.

L'armature de support 2 comporte également un passage désigné par la référence générale 6, obturé par au moins un volet désigné par la référence générale 7 sur ces figures, ce volet étant articulé sur l'armature et étant escamotable par le sac lors de son gonflage.  The support frame 2 also includes a passage designated by the general reference 6, closed by at least one flap designated by the general reference 7 in these figures, this flap being articulated on the frame and being retractable by the bag during its inflation.

Dans les exemples décrits en regard de ces figures 1 et 2, le volet 7 comporte deux portions 7a et 7b escamotables à peu près symétriques. In the examples described with reference to these FIGS. 1 and 2, the flap 7 comprises two approximately symmetrical retractable portions 7a and 7b.

Selon l'invention, ce volet est en matière thermoplastique présentant par exemple des caractéristiques élastomères et présente une section de forme générale en V inversé dont l'angle d'ouverture entre les branches est compris entre environ 100" et environ 1600.  According to the invention, this flap is made of thermoplastic material having for example elastomeric characteristics and has a generally V-shaped section inverted whose opening angle between the branches is between approximately 100 "and approximately 1600.

Dans l'exemple de réalisation décrit en regard de ces figures, les bords opposés de ce volet désignés par les références 8 et 9, sont articulés et fixés sur l'armature de support par l'intermédiaire de moyens d'articulation 10 et 11 formés par exemple par des plis de ce volet (Fig.1) et de moyens de fixation. In the embodiment described with reference to these figures, the opposite edges of this flap designated by the references 8 and 9, are articulated and fixed to the support frame by means of articulation means 10 and 11 formed for example by folds of this flap (Fig. 1) and fixing means.

Dans sa partie intermédiaire, ce volet comporte des nervures de renfort par exemple 12, venues de matière avec le volet et s'étendant de part et d'autre d'une zone de section réduite 13 de rupture préférentielle du volet lors du gonflage du sac permettant aux portions symétriques 7a et 7b du volet de s'escamoter. In its intermediate part, this flap comprises reinforcing ribs for example 12, integrally formed with the flap and extending on either side of a reduced cross-sectional area 13 of preferential rupture of the flap during inflation of the bag allowing the symmetrical portions 7a and 7b of the flap to retract.

La peau d'aspect 5 comporte également en regard de cette partie intermédiaire du volet, une zone de section réduite 14 de déchirure préférentielle lors du gonflage du sac. The appearance skin 5 also includes, opposite this intermediate part of the flap, a reduced cross-sectional area 14 of preferential tearing during inflation of the bag.

Dans l'exemple de réalisation décrit en regard de cette figure 1, les nervures de renfort 12 sont venues de matière avec le reste du volet. In the embodiment described with reference to this FIG. 1, the reinforcing ribs 12 have come integrally with the rest of the flap.

Cependant, il va de soi bien entendu que ces nervures de renfort peuvent également être formées par des nervures ménagées sur des pièces indépendantes fixées sur le volet par tout moyen approprié, comme par exemple par l'intermédiaire de moyens d'accrochage comme cela est représenté sur la figure 2. However, it goes without saying of course that these reinforcing ribs can also be formed by ribs formed on independent parts fixed to the flap by any suitable means, such as for example by means of attachment means as shown. in figure 2.

Dans l'exemple de réalisation représenté sur cette figure 2, les nervures de renfort 15 et 16 sont ménagées sur des pièces d'accrochage 17 et 18 disposées de part et d'autre de la zone de section réduite 13 du volet et munies de crochets, par exemple 19 et 20, adaptés pour s'engager dans des évidements ménagés dans le reste du volet pour assurer l'accrochage de ces pièces et de ces nervures de renfort sur le volet. In the embodiment shown in this figure 2, the reinforcing ribs 15 and 16 are formed on hooking pieces 17 and 18 arranged on either side of the reduced section area 13 of the flap and provided with hooks , for example 19 and 20, adapted to engage in recesses made in the rest of the flap to ensure the attachment of these parts and these reinforcing ribs on the flap.

On notera également que dans cet exemple de réalisation représenté sur la figure 2, les moyens d'articulation du volet sur l'armature sont formés par des zones de section réduite 21 et 22 des bords de celui-ci. It will also be noted that in this embodiment shown in FIG. 2, the means of articulation of the flap on the frame are formed by zones of reduced section 21 and 22 of the edges thereof.

La fixation du volet sur l'armature est dans les exemples de réalisation représentés sur ces figures 1 et 2, assurée par l'intermédiaire de rivets. The fixing of the flap on the frame is in the embodiments shown in these Figures 1 and 2, provided by means of rivets.

Il va de soi bien entendu que d'autres moyens de fixation peuvent être envisagés. It goes without saying of course that other fixing means can be envisaged.

On conçoit alors que la structure de recouvrement selon l'invention présente un certain nombre d'avantages dans la mesure où le volet d'obturation du passage de l'armature est également réalisé en matière thermoplastique, ce qui facilite son recyclage. It is therefore understood that the covering structure according to the invention has a certain number of advantages insofar as the shutter for closing the passage of the frame is also made of thermoplastic material, which facilitates its recycling.

Par ailleurs, la forme particulière de ce volet en V inversé et la présence de nervures de renfort permet d'obtenir une rigidité suffisante de celui-ci. Furthermore, the particular shape of this inverted V flap and the presence of reinforcing ribs makes it possible to obtain sufficient rigidity thereof.

Enfin, les différents éléments entrant dans la constitution de cette structure peuvent etre réalisés en matière plastique, ce qui réduit son coût de fabrication et facilite les opérations de recyclage de celle-ci.  Finally, the various elements involved in the constitution of this structure can be made of plastic, which reduces its manufacturing cost and facilitates its recycling operations.

Claims (9)

REVENDICATIONS 1. Structure de recouvrement d'un module à sac gonflable implanté dans un organe d'un véhicule automobile, du type comportant une armature de support (2) sur laquelle est disposé un garnissage (3) et dans laquelle est ménagé un passage (6) obturé par au moins un volet (7) articulé sur l'armature et escamotable par le sac lors de son gonflage, caractérisée en ce que le volet (7) est en matière thermoplastique et présente une section de forme générale en V inversé dont l'angle d'ouverture entre les branches est compris entre environ 100" et environ 160 .  1. Covering structure of an airbag module installed in a member of a motor vehicle, of the type comprising a support frame (2) on which is arranged a lining (3) and in which is formed a passage (6 ) closed by at least one flap (7) articulated on the frame and retractable by the bag when it is inflated, characterized in that the flap (7) is made of thermoplastic material and has a generally V-shaped inverted section of which l the opening angle between the branches is between approximately 100 "and approximately 160. 2. Structure selon la revendication 1, caractérisée en ce que des moyens de renfort (12;15,16) sont prévus dans la partie intermédiaire du volet. 2. Structure according to claim 1, characterized in that reinforcing means (12; 15,16) are provided in the intermediate part of the flap. 3. Structure selon la revendication 2, caractérisée en ce que les moyens de renfort sont formés par des nervures. 3. Structure according to claim 2, characterized in that the reinforcing means are formed by ribs. 4. Structure selon la revendication 2 ou 3, caractérisée en ce que les moyens de renfort (12) sont venus de matière avec le volet (7). 4. Structure according to claim 2 or 3, characterized in that the reinforcing means (12) came integrally with the flap (7). 5. Structure selon la revendication 2 ou 3, caractérisée en ce que les moyens de renfort (15,16) sont ménagés sur des pièces d'accrochage (17,18) fixées sur le volet. 5. Structure according to claim 2 or 3, characterized in that the reinforcing means (15,16) are provided on attachment pieces (17,18) fixed on the flap. 6. Structure selon l'une quelconque des revendications précédentes, caractérisée en ce que le volet comporte sur des bords opposés, des moyens d'articulation (10,11; 21,22) et de fixation sur l'armature. 6. Structure according to any one of the preceding claims, characterized in that the flap comprises on opposite edges, articulation means (10,11; 21,22) and fixing on the frame. 7. Structure selon la revendication 6, caractérisée en ce que les moyens d'articulation sont formés par des plis (10,11) du volet. 7. Structure according to claim 6, characterized in that the articulation means are formed by folds (10,11) of the flap. 8. Structure selon la revendication 6, caractérisée en ce que les moyens d'articulation sont formés par des zones de section réduite (21,22) du volet.  8. Structure according to claim 6, characterized in that the articulation means are formed by zones of reduced section (21,22) of the flap. 9. Structure selon la revendication 6,7 ou 8, caractérisée en ce que les moyens de fixation du volet sur l'armature comprennent des rivets.  9. Structure according to claim 6,7 or 8, characterized in that the means for fixing the flap on the frame comprise rivets.
FR9408088A 1994-06-30 1994-06-30 COVERING STRUCTURE OF A MODULE WITH AN INFLATABLE BAG IMPLANTED IN A COMPONENT OF A MOTOR VEHICLE Expired - Fee Related FR2721877B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9408088A FR2721877B1 (en) 1994-06-30 1994-06-30 COVERING STRUCTURE OF A MODULE WITH AN INFLATABLE BAG IMPLANTED IN A COMPONENT OF A MOTOR VEHICLE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9408088A FR2721877B1 (en) 1994-06-30 1994-06-30 COVERING STRUCTURE OF A MODULE WITH AN INFLATABLE BAG IMPLANTED IN A COMPONENT OF A MOTOR VEHICLE

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FR2721877A1 true FR2721877A1 (en) 1996-01-05
FR2721877B1 FR2721877B1 (en) 1996-08-30

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FR9408088A Expired - Fee Related FR2721877B1 (en) 1994-06-30 1994-06-30 COVERING STRUCTURE OF A MODULE WITH AN INFLATABLE BAG IMPLANTED IN A COMPONENT OF A MOTOR VEHICLE

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1970183A3 (en) * 2007-03-12 2008-11-05 GM Global Technology Operations, Inc. Hidden airbag flap, device and method for its production
EP2055537A3 (en) * 2007-10-31 2010-06-02 Takata Corporation Interior component and airbag apparatus for vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0428935A2 (en) * 1989-11-06 1991-05-29 Tip Engineering Group, Inc. Arrangement for providing an air bag deployment opening
JPH0478637A (en) * 1990-07-13 1992-03-12 Toyota Motor Corp Automobile air bag device
EP0495188A1 (en) * 1990-12-07 1992-07-22 Davidson Textron Inc. Decorative panel with invisible tear seam

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0428935A2 (en) * 1989-11-06 1991-05-29 Tip Engineering Group, Inc. Arrangement for providing an air bag deployment opening
JPH0478637A (en) * 1990-07-13 1992-03-12 Toyota Motor Corp Automobile air bag device
EP0495188A1 (en) * 1990-12-07 1992-07-22 Davidson Textron Inc. Decorative panel with invisible tear seam

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 16, no. 290 (M - 1272) 26 June 1992 (1992-06-26) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1970183A3 (en) * 2007-03-12 2008-11-05 GM Global Technology Operations, Inc. Hidden airbag flap, device and method for its production
EP2055537A3 (en) * 2007-10-31 2010-06-02 Takata Corporation Interior component and airbag apparatus for vehicle

Also Published As

Publication number Publication date
FR2721877B1 (en) 1996-08-30

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