FR2927290A1 - Dashboard for motor vehicle, has plastic reinforcement plate fixed to inner face of wall of shutter, where plate includes incipient crack provided on inner face of plate located from side of housing - Google Patents
Dashboard for motor vehicle, has plastic reinforcement plate fixed to inner face of wall of shutter, where plate includes incipient crack provided on inner face of plate located from side of housing Download PDFInfo
- Publication number
- FR2927290A1 FR2927290A1 FR0850807A FR0850807A FR2927290A1 FR 2927290 A1 FR2927290 A1 FR 2927290A1 FR 0850807 A FR0850807 A FR 0850807A FR 0850807 A FR0850807 A FR 0850807A FR 2927290 A1 FR2927290 A1 FR 2927290A1
- Authority
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- Prior art keywords
- dashboard
- reinforcing plate
- inner face
- wall
- flap
- 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
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- 239000004033 plastic Substances 0.000 title claims abstract description 18
- 229920003023 plastic Polymers 0.000 title claims abstract description 18
- 230000002787 reinforcement Effects 0.000 title abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 19
- 238000003466 welding Methods 0.000 claims description 11
- 229920002457 flexible plastic Polymers 0.000 claims description 4
- 230000035939 shock Effects 0.000 abstract description 2
- 239000004743 Polypropylene Substances 0.000 description 4
- 238000010304 firing Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
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- 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
- B60R21/205—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in dashboards
-
- 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
Description
Planche de bord améliorée comportant un volet muni d'une plaque de renfort en plastique rigide La présente invention concerne une planche de bord d'un véhicule automobile, du type comportant une ligne de moindre résistance délimitant un volet relié à la planche de bord, le long d'un côté de la ligne, par une liaison charnière et destiné à s'ouvrir sous la pression du déploiement d'un coussin gonflable de sécurité lors d'un choc subi par le véhicule automobile, ledit volet comportant une paroi ayant une face intérieure du côté d'un boîtier renfermant le coussin gonflable de sécurité et une face extérieure opposée à la face intérieure, et une plaque de renfort en matière plastique rigide fixée sur la face intérieure de la paroi. Le boîtier renfermant le coussin gonflable de sécurité est fixé, entre autres, à la planche de bord par l'intermédiaire d'un cadre de support soudé sur une face intérieure de la planche de bord, sur tout ou partie du pourtour de l'ouverture ménagée dans la planche de bord et fermée par le volet. Le cadre de support délimite un canal de tir, obturé par le volet de la planche de bord, et permettant de guider le coussin lors du tir. Le document FR 2 811 952 Al divulgue une plaque de renfort en matière plastique rigide, venue de matière avec le cadre de support. Ainsi, avantageusement, le cadre de support et la plaque de renfort sont moulés au cours d'une même étape en utilisant un unique moule. Puis ils sont soudés sur la face intérieure de la planche de bord en même temps. Etant moulées en même temps, le cadre de support et la plaque de renfort sont réalisés dans la même matière plastique, par exemple du polypropylène. The present invention relates to a dashboard of a motor vehicle, of the type comprising a line of weakness defining a flap connected to the dashboard, the along one side of the line, by a hinge connection and intended to open under the pressure of the deployment of an airbag during an impact suffered by the motor vehicle, said shutter having a wall having a face inner side of a housing enclosing the airbag and an outer face opposite to the inner face, and a rigid plastic backing plate attached to the inner face of the wall. The casing enclosing the airbag is fixed, inter alia, to the dashboard by means of a support frame welded to an inner face of the dashboard, all or part of the periphery of the opening arranged in the dashboard and closed by the shutter. The support frame defines a firing channel, closed by the flap of the dashboard, and to guide the cushion during firing. The document FR 2 811 952 A1 discloses a rigid plastic reinforcement plate, integral with the support frame. Thus, advantageously, the support frame and the reinforcing plate are molded during a single step using a single mold. Then they are welded on the inside of the dashboard at the same time. Being molded at the same time, the support frame and the reinforcing plate are made of the same plastic material, for example polypropylene.
Pour supporter les contraintes appliquées par le coussin de sécurité lors de son actionnement, la tendance actuelle est de fabriquer des cadres de support dans des plastiques particulièrement rigides, par exemple en polypropylène renforcé de fibres de verre à 30% en masse. Ce faisant, on confère également à la plaque de renfort une rigidité importante, pouvant être supérieure à celle de la paroi du volet. De telles plaques de renfort en matière plastique rigide présentent des désavantages. In order to withstand the stresses applied by the safety cushion when it is actuated, the current trend is to manufacture support frames in particularly rigid plastics, for example 30% by weight glass fiber reinforced polypropylene. In doing so, the reinforcement plate is also given a high rigidity, which may be greater than that of the wall of the shutter. Such reinforcing plates of rigid plastics have disadvantages.
Ainsi, lors de l'actionnement du coussin, à la fin de son mouvement d'ouverture, le volet rigide entre en contact violent avec le pare-brise du véhicule. Le volet rebondit. L'élément formant charnière qui couple le volet au reste de la planche de bord est arraché et le volet se désolidarise du reste de la planche de bord. Le volet se brise en éclats. De plus, le pare-brise lui-même est abîmé : non seulement il peut être abîmé de manière irréversible imposant son remplacement, même pour des chocs à faible vitesse qui déclenchent le gonflement du coussin mais n'occasionnent pas de gros dégâts à la structure du véhicule ; mais encore, le pare-brise peut être brisé à cause du volet et projeter des éclats dans l'habitacle. Par ailleurs, en atelier, après fixation par soudure de la plaque de renfort sur la face intérieure du volet, lorsque la plaque de renfort comporte de légères déformations géométriques à l'issue du moulage, celles-ci conduisent à la présence de plis sur la peau thermosoudée sur la face extérieure de la paroi du volet. L'utilisation d'une plaque de renfort en matière plastique rigide risque donc de nuire à l'esthétique de la planche de bord. L'invention a pour but de proposer une planche de bord dont le volet, bien que comportant une plaque de renfort en matière plastique rigide, ne présente pas les problèmes précités et améliore la sécurité du véhicule. Thus, when the cushion is actuated, at the end of its opening movement, the rigid flap comes into violent contact with the windshield of the vehicle. The pane bounces. The hinge member that couples the flap to the rest of the dashboard is torn off and the flap disengages from the rest of the dashboard. The shutter breaks apart. In addition, the windshield itself is damaged: not only can it be damaged irreversibly imposing its replacement, even for low speed shocks that trigger the inflation of the cushion but do not cause major damage to the structure of the vehicle ; but still, the windshield can be broken because of the shutter and throw splinters in the cockpit. Furthermore, in the workshop, after attachment by welding of the reinforcing plate on the inner face of the flap, when the reinforcing plate has slight geometric deformations at the end of the molding, they lead to the presence of folds on the heat-sealed skin on the outside of the shutter wall. The use of a rigid plastic reinforcement plate may therefore affect the aesthetics of the dashboard. The invention aims to provide a dashboard whose shutter, although having a rigid plastic reinforcing plate, does not present the aforementioned problems and improves the safety of the vehicle.
A cet effet, l'invention a pour objet une planche de bord du type précité, caractérisée en ce que la plaque de renfort comporte au moins une amorce de rupture prévue sur une face intérieure de la plaque de renfort située du côté du boîtier. Suivant des modes particuliers de réalisation, la planche de bord comporte une ou plusieurs des caractéristiques suivantes, prise(s) isolément ou suivant toutes les combinaisons techniquement possibles : - la paroi du volet est en un matériau rigide, tel qu'une matière plastique rigide, et le module d'élasticité en flexion de la matière plastique dont est formée la plaque de renfort est supérieur à celui du matériau de la paroi. - l'amorce est une zone d'épaisseur réduite dans la plaque de renfort. - l'amorce est une rainure à section transversale en V ou en U . - la rainure s'étend sensiblement parallèlement à l'axe de la liaison charnière articulant le volet à la planche de bord. - une face extérieure de la plaque de renfort, du côté de la paroi, comporte des nervures de soudage pour souder la face extérieure de la plaque de renfort sur la face intérieure de la paroi, et l'amorce de rupture est disposée sur la face intérieure de la plaque de renfort de manière à être située, en vue de dessus de la plaque de renfort, entre deux nervures de soudage successives. - le volet comporte une peau recouvrant la face extérieure de la paroi et solidaire de celle-ci, la peau étant en un matériau souple, tel qu'une matière plastique souple. - la liaison charnière est réalisée par un filet dont une première partie est couplée au volet et une seconde partie est couplée au boîtier, les première et seconde parties étant séparées l'une de l'autre par une partie intermédiaire formant une surlongueur, notamment une boucle libre autour de l'axe de la liaison charnière. - la première partie du filet couvre une majeure partie de la surface de la plaque de renfort et assure la cohésion des parties de la plaque de renfort après rupture de celle-ci. - les première et seconde parties du filet sont surmoulées respectivement dans la plaque de renfort et dans un cadre de support du boîtier. L'invention a également pour objet un véhicule automobile comportant une planche de bord et un boîtier renfermant un coussin gonflable de sécurité, caractérisé en ce que la planche de bord est une planche de bord telle que définie ci-dessus. L'invention et ses avantages seront mieux compris 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 : - la figure 1 est une section transversale d'une planche de bord selon l'invention, le volet étant en position fermée; et - la figure 2 reprend la section de la figure 1, le volet étant cette fois-ci en position ouverte, arrivant en contact du pare-brise avant du véhicule. For this purpose, the invention relates to a dashboard of the aforementioned type, characterized in that the reinforcing plate comprises at least one breaking primer provided on an inner face of the reinforcing plate located on the side of the housing. According to particular embodiments, the dashboard comprises one or more of the following characteristics, taken separately or in any technically possible combination: the wall of the shutter is made of a rigid material, such as a rigid plastic material and the flexural modulus of elasticity of the plastic material of which the reinforcing plate is formed is greater than that of the material of the wall. the primer is a zone of reduced thickness in the reinforcing plate. the primer is a V-shaped or U-shaped cross-section groove. - The groove extends substantially parallel to the axis of the hinge link articulating the flap to the dashboard. - An outer face of the reinforcing plate, on the side of the wall, comprises welding ribs for welding the outer face of the reinforcing plate on the inner face of the wall, and the breaking primer is disposed on the face. interior of the reinforcing plate so as to be located, in top view of the reinforcing plate, between two successive welding ribs. - The flap comprises a skin covering the outer face of the wall and secured thereto, the skin being of a flexible material, such as a flexible plastic material. the hinge connection is made by a thread of which a first part is coupled to the flap and a second part is coupled to the casing, the first and second parts being separated from one another by an intermediate part forming an excess length, in particular a free loop around the axis of the hinge link. the first part of the net covers a major part of the surface of the reinforcing plate and ensures the cohesion of the parts of the reinforcing plate after rupture of the latter. the first and second parts of the net are overmolded respectively in the reinforcing plate and in a frame for supporting the casing. The invention also relates to a motor vehicle comprising a dashboard and a casing enclosing an airbag, characterized in that the dashboard is a dashboard as defined above. The invention and its advantages will be better understood on reading the description which will follow, given solely by way of example, and with reference to the appended drawings, in which: FIG. 1 is a transverse section of a dashboard according to the invention, the flap being in the closed position; and - Figure 2 shows the section of Figure 1, the flap being this time in the open position, coming into contact with the front windshield of the vehicle.
La figure 1 représente une section de la planche de bord selon un plan vertical parallèle à l'axe longitudinal du véhicule. La planche de bord 1 est située au-dessus d'une traverse de planche de bord 2 s'étendant dans la largeur du véhicule automobile, et en dessous d'un pare-brise 4 placé à l'avant de l'habitacle du véhicule. Le pare-brise 4 fait un angle aigu avec la planche de bord 1. La planche de bord 1 comporte une ouverture, sensiblement rectangulaire, et un volet 6 obturant l'ouverture. En fait, dans le mode de réalisation illustré sur les figures, la planche de bord comporte une ligne de moindre résistance L correspondant au périmètre de l'ouverture et délimitant le volet 6. Sensiblement en face du siège passager, un boîtier 8 est fixé sur la traverse 2. Le boîtier 8 renferme un coussin gonflable de sécurité 10 et des moyens 12 permettant de gonfler le coussin 10 lors de son actionnement au moment d'un choc entre un obstacle extérieur et le véhicule automobile. Le boîtier 8 est également fixé sur une face inférieure de la planche de bord 1, du côté du boîtier 8, par l'intermédiaire d'un cadre de support 14. Le cadre de support 14 est soudé à la face intérieure de la planche de bord sur tout ou partie du pourtour de l'ouverture délimitée par la ligne L. Le cadre de support 14 définit un canal de tir 16 permettant de guider le coussin 10 lors de son gonflement. Le canal 16 est obturé par le volet 6 dans l'état non actionné du coussin 10. Le volet 6 comporte une paroi 18, une plaque de renfort 20 et une peau 22. La paroi 18 est en un matériau plastique rigide, qui est celui de la planche de bord 1. Sur la face intérieure 24 de la paroi 18, face orientée du côté du boîtier 8, est fixée la plaque de renfort 20. La plaque de renfort 20, sensiblement rectangulaire et venue de matière lors du moulage du cadre de support 14, est reliée à celui-ci par plusieurs pattes frangibles 21. Elle est en une matière plastique qui présente une rigidité supérieure à celle de la paroi 18. Ainsi, le matériau de la plaque 20 présente un module d'élasticité en flexion supérieur à celui de la paroi 18. La plaque 20 est par exemple en polypropylène renforcé de 30 % en masse de fibre de verre ( PP FG 30 ). La plaque de renfort 20 est soudée par vibrations à la face intérieure 24. Pour cela, la face extérieure 25 de la plaque 20 est munie d'une série de nervures de soudage 26 qui s'étendent transversalement sur toute la largeur de la plaque 20. La face intérieure 28 de la plaque 20, du côté du boîtier 8, est munie de plusieurs amorces de rupture 40 pour conférer une certaine souplesse à la plaque de renfort 20 en matière plastique rigide et contrôler la casse du volet 6 lorsque celui-ci vient percuter le pare-brise 4. Les amorces de rupture prennent la forme de rainures 40 rectilignes à section transversale en V . En variante, les rainures ont une section transversale en U . Les rainures 40 sont situées parallèlement aux nervures de soudage 26 et disposées sur la face intérieure 28 de la plaque 20 de manière à être située, en vue de dessus, entre deux nervures de soudage 26 successives. Pour qu'elles jouent pleinement leur rôle, l'homme du métier saura disposer et conformer les amorces de rupture en fonction de la forme particulière du pare-brise 4 et des propriétés mécaniques des différents composants du volet 6, en particulier de la plaque de support 20. Le volet 6, de forme rectangulaire, est articulé, le long du côté de la ligne L adjacent au pare-brise 4, au rebord 29 de la planche de bord 1, au moyen d'une liaison charnière 30 qui est réalisée par un filet 31 en matière plastique souple, telle que des fibres de polyester ou d'aramide. Figure 1 shows a section of the dashboard in a vertical plane parallel to the longitudinal axis of the vehicle. The dashboard 1 is located above a dashboard cross member 2 extending in the width of the motor vehicle, and below a windshield 4 placed at the front of the passenger compartment of the vehicle . The windshield 4 is at an acute angle with the dashboard 1. The dashboard 1 has an opening, substantially rectangular, and a flap 6 closing the opening. In fact, in the embodiment illustrated in the figures, the dashboard comprises a line of least resistance L corresponding to the perimeter of the opening and defining the flap 6. Substantially in front of the passenger seat, a housing 8 is fixed on 2. The housing 8 encloses an airbag 10 and means 12 for inflating the cushion 10 during its actuation at the time of a collision between an external obstacle and the motor vehicle. The casing 8 is also fixed on a lower face of the dashboard 1, on the side of the casing 8, by means of a support frame 14. The support frame 14 is welded to the inner face of the support board. edge on all or part of the periphery of the opening delimited by the line L. The support frame 14 defines a firing channel 16 for guiding the cushion 10 during its swelling. The channel 16 is closed by the flap 6 in the non-actuated state of the cushion 10. The flap 6 comprises a wall 18, a reinforcing plate 20 and a skin 22. The wall 18 is made of a rigid plastic material, which is the of the dashboard 1. On the inner face 24 of the wall 18, face oriented on the side of the housing 8, is fixed the reinforcing plate 20. The reinforcing plate 20, substantially rectangular and integral during the molding of the frame 14 is connected to the latter by a plurality of frangible tabs 21. It is made of a plastics material which has a rigidity greater than that of the wall 18. Thus, the material of the plate 20 has a flexural modulus of elasticity greater than that of the wall 18. The plate 20 is for example polypropylene reinforced with 30% by weight of fiberglass (PP FG 30). The reinforcing plate 20 is vibratedly welded to the inner face 24. For this, the outer face 25 of the plate 20 is provided with a series of welding ribs 26 which extend transversely over the entire width of the plate 20 The inner face 28 of the plate 20, on the side of the casing 8, is provided with a plurality of fracture primers 40 to impart a certain flexibility to the rigid plastic reinforcing plate 20 and to control the breakage of the shutter 6 when the latter The rupture primer takes the form of straight grooves 40 with a V cross-section. Alternatively, the grooves have a U-shaped cross section. The grooves 40 are located parallel to the welding ribs 26 and disposed on the inner face 28 of the plate 20 so as to be located, in plan view, between two successive welding ribs 26. In order for them to play their role fully, those skilled in the art will know how to dispose and conform the rupture primers as a function of the particular shape of the windshield 4 and the mechanical properties of the various components of the flap 6, in particular of the plate of 20. The flap 6, of rectangular shape, is articulated, along the side of the line L adjacent to the windshield 4, to the flange 29 of the dashboard 1, by means of a hinge connection 30 which is made by a net 31 of flexible plastic material, such as polyester or aramid fibers.
Le filet 31 présente une première partie 32 surmoulée dans la partie du cadre 14 soudée au rebord 29 de la planche de bord 1, une seconde partie 34 surmoulée dans la plaque de renfort 20, et, entre les première et seconde parties 32 et 34, une boucle libre 36. Avantageusement, la surface de la seconde partie 34 du filet 31 couvre la majeure partie de la surface de la plaque de renfort 20, et en particulier la surface de la plaque 20 située en regard de chacune des amorces de rupture 40, pour assurer la cohésion des parties de la plaque 20 après rupture. La peau 22 recouvre et est solidaire d'une face extérieure 38 de la paroi 18, opposée à la face intérieure 24. La peau 22, qui s'étend sur les régions de la planche de bord 1 adjacentes au volet 6 et recouvre avantageusement l'essentiel, voire l'intégralité, de la surface de la planche de bord 1, est une feuille d'un matériau plastique souple, par exemple un polyoléfine (TPO). Sous la pression exercée par le coussin gonflable de sécurité 10 lors de son actionnement, le volet 6 s'ouvre et tourne autour de la liaison charnière 30 pour libérer le canal 16 du cadre de support 14 et permettre le gonflement du coussin 10. Lors de son ouverture, le mouvement de rotation du volet 6 se poursuit jusqu'à ce que le volet 6 entre en contact avec le pare-brise 4. Ce contact se fait au voisinage du bord 39 du volet 6 opposé au bord couplé par la liaison charnière 30 au rebord 29 de la planche de bord 1. The net 31 has a first portion 32 overmolded in the portion of the frame 14 welded to the flange 29 of the dashboard 1, a second portion 34 molded into the reinforcing plate 20, and, between the first and second parts 32 and 34, a free loop 36. Advantageously, the surface of the second portion 34 of the net 31 covers most of the surface of the reinforcing plate 20, and in particular the surface of the plate 20 located opposite each of the break primers 40 to ensure the cohesion of the parts of the plate 20 after rupture. The skin 22 covers and is integral with an outer face 38 of the wall 18, opposite the inner face 24. The skin 22, which extends over the regions of the dashboard 1 adjacent to the flap 6 and advantageously covers the l The essential, if not all, of the surface of the dashboard 1 is a sheet of a flexible plastic material, for example a polyolefin (TPO). Under the pressure exerted by the airbag 10 during its actuation, the flap 6 opens and rotates around the hinge connection 30 to release the channel 16 of the support frame 14 and allow the pad 10 to inflate. its opening, the rotational movement of the flap 6 continues until the flap 6 comes into contact with the windshield 4. This contact is made in the vicinity of the edge 39 of the flap 6 opposite the edge coupled by the hinge connection 30 at the edge 29 of the dashboard 1.
Sous l'effet de l'impact, la plaque 20 se brise en plusieurs parties au niveau des amorces de rupture 40. Les différents fragments de la plaque 20 brisée sont maintenus entre eux par la seconde partie 34 du filet 31 souple et déformable. Eventuellement, la paroi 18 éclate également lors de l'impact, mais ses différents éclats restent soudés sur la plaque de renfort 20. Ils sont aussi retenus par la peau 22. Le coussin gonflable 10 ouvre le volet 6 par appui sur la plaque de renfort 20. La pression étant répartie sur l'ensemble de la face intérieure 28 de la plaque 20, celle-ci ne se brise pas au niveau des amorces 40 sous l'action du coussin 10. Under the effect of the impact, the plate 20 breaks up into several parts at the level of the rupture primer 40. The various fragments of the broken plate 20 are held together by the second portion 34 of the flexible and deformable net 31. Eventually, the wall 18 also bursts during the impact, but its various splinters remain welded to the reinforcing plate 20. They are also retained by the skin 22. The airbag 10 opens the shutter 6 by pressing on the reinforcement plate 20. The pressure being distributed over the entire inner face 28 of the plate 20, it does not break at the level of the primers 40 under the action of the cushion 10.
Une partie de l'énergie cinétique du volet 6, acquise lors de son ouverture, est dissipée sous forme d'énergie de rupture permettant de briser la plaque 20. Ainsi, l'énergie cinétique du volet 6 est réduite. L'impact entre le volet 6 et le pare-brise 4 se fait de manière moins explosive. Par conséquent, le risque que le pare-brise 4 soit détérioré, que le volet 6 soit arraché du reste de la planche de bord 1 le long de la liaison charnière 30, ou qu'un éclat, provenant du volet 6 soit projeté dans l'habitacle du véhicule automobile, est fortement réduit. Par ailleurs, lors du montage par soudure de la plaque de renfort 20 sur la face intérieure 24 de la paroi 18, les rainures 40, conférant une souplesse à la plaque 20, permettent de compenser d'éventuelles déformations géométriques issues du moulage de la plaque 20. La plaque de renfort 20 génère alors moins de contraintes sur la paroi 18 sur laquelle elle est soudée. Extérieurement, la peau 22 est alors moins plissée et l'aspect esthétique de la planche de bord 1 est amélioré au niveau du volet 6. Part of the kinetic energy of the flap 6, acquired during its opening, is dissipated in the form of breaking energy to break the plate 20. Thus, the kinetic energy of the flap 6 is reduced. The impact between the shutter 6 and the windshield 4 is less explosive. Therefore, the risk that the windshield 4 is damaged, that the flap 6 is torn from the rest of the dashboard 1 along the hinge connection 30, or that a luster, from the flap 6 is projected in the cabin of the motor vehicle, is greatly reduced. Furthermore, during the assembly by welding of the reinforcing plate 20 on the inner face 24 of the wall 18, the grooves 40, giving flexibility to the plate 20, make it possible to compensate for any geometrical deformations resulting from the molding of the plate. 20. The reinforcing plate 20 then generates less stress on the wall 18 on which it is welded. Externally, the skin 22 is then less wrinkled and the aesthetic appearance of the dashboard 1 is improved at the flap 6.
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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FR0850807A FR2927290B1 (en) | 2008-02-08 | 2008-02-08 | IMPROVED DASHBOARD COMPRISING A SHUTTER WITH A RIGID PLASTIC REINFORCING PLATE. |
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FR0850807A FR2927290B1 (en) | 2008-02-08 | 2008-02-08 | IMPROVED DASHBOARD COMPRISING A SHUTTER WITH A RIGID PLASTIC REINFORCING PLATE. |
Publications (2)
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FR2927290A1 true FR2927290A1 (en) | 2009-08-14 |
FR2927290B1 FR2927290B1 (en) | 2010-06-11 |
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FR0850807A Expired - Fee Related FR2927290B1 (en) | 2008-02-08 | 2008-02-08 | IMPROVED DASHBOARD COMPRISING A SHUTTER WITH A RIGID PLASTIC REINFORCING PLATE. |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3007346A1 (en) * | 2013-06-24 | 2014-12-26 | Visteon Global Tech Inc | HOUSING CLOSURE DEVICE FOR AIRBAG |
FR3007347A1 (en) * | 2013-06-24 | 2014-12-26 | Faurecia Interieur Ind | METHOD FOR INJECTION MOLDING AN INFLATABLE SAFETY CUSHION CASE. |
US9022419B2 (en) | 2013-06-24 | 2015-05-05 | Faurecia Interieur Industrie | Safety device for vehicle |
US11230249B2 (en) * | 2018-01-22 | 2022-01-25 | Motherson Innovations Company Limited | Air bag assembly with an air bag guide and an interior trim component and method for producing the same |
FR3122623A1 (en) * | 2021-05-10 | 2022-11-11 | Faurecia Interieur Industrie | Vehicle security system |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2265340A (en) * | 1992-03-25 | 1993-09-29 | Takata Corp | Lid for vehicle air bag assembly |
JPH0761310A (en) * | 1993-08-30 | 1995-03-07 | Toyoda Gosei Co Ltd | Lid material for air bag device |
DE29922988U1 (en) * | 1999-12-30 | 2000-05-18 | TRW Automotive Safety Systems GmbH & Co. KG, 63743 Aschaffenburg | Airbag module cover |
FR2811952A1 (en) | 2000-07-18 | 2002-01-25 | Ecia Equip Composants Ind Auto | Hinged panel opening for vehicle airbag deployment, sandwiches reinforcing mesh in areas of cover, surrounding dashboard and hinge |
DE102004058826A1 (en) * | 2004-12-07 | 2006-06-14 | Volkswagen Ag | Safety device for vehicle e.g. motor vehicle has mechanism at cover wherein mechanism causes dysfunction of the cover, in order to reduce impact force acting upon a component, especially on windscreen |
EP1731381A2 (en) * | 2005-06-09 | 2006-12-13 | Volkswagen AG | Base module for an airbag device, associated airbag device, manufacturing method and manufacturing tool for an airbag module |
-
2008
- 2008-02-08 FR FR0850807A patent/FR2927290B1/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2265340A (en) * | 1992-03-25 | 1993-09-29 | Takata Corp | Lid for vehicle air bag assembly |
JPH0761310A (en) * | 1993-08-30 | 1995-03-07 | Toyoda Gosei Co Ltd | Lid material for air bag device |
DE29922988U1 (en) * | 1999-12-30 | 2000-05-18 | TRW Automotive Safety Systems GmbH & Co. KG, 63743 Aschaffenburg | Airbag module cover |
FR2811952A1 (en) | 2000-07-18 | 2002-01-25 | Ecia Equip Composants Ind Auto | Hinged panel opening for vehicle airbag deployment, sandwiches reinforcing mesh in areas of cover, surrounding dashboard and hinge |
DE102004058826A1 (en) * | 2004-12-07 | 2006-06-14 | Volkswagen Ag | Safety device for vehicle e.g. motor vehicle has mechanism at cover wherein mechanism causes dysfunction of the cover, in order to reduce impact force acting upon a component, especially on windscreen |
EP1731381A2 (en) * | 2005-06-09 | 2006-12-13 | Volkswagen AG | Base module for an airbag device, associated airbag device, manufacturing method and manufacturing tool for an airbag module |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3007346A1 (en) * | 2013-06-24 | 2014-12-26 | Visteon Global Tech Inc | HOUSING CLOSURE DEVICE FOR AIRBAG |
FR3007347A1 (en) * | 2013-06-24 | 2014-12-26 | Faurecia Interieur Ind | METHOD FOR INJECTION MOLDING AN INFLATABLE SAFETY CUSHION CASE. |
US9022419B2 (en) | 2013-06-24 | 2015-05-05 | Faurecia Interieur Industrie | Safety device for vehicle |
US9333936B2 (en) | 2013-06-24 | 2016-05-10 | Faurecia Interieur Industrie | Method for injection molding of an airbag case |
US10625702B2 (en) | 2013-06-24 | 2020-04-21 | Visteon Global Technologies, Inc. | Closing device for a housing for an airbag |
US11230249B2 (en) * | 2018-01-22 | 2022-01-25 | Motherson Innovations Company Limited | Air bag assembly with an air bag guide and an interior trim component and method for producing the same |
FR3122623A1 (en) * | 2021-05-10 | 2022-11-11 | Faurecia Interieur Industrie | Vehicle security system |
Also Published As
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