WO2007147966A2 - Dashboard having a door mounted on a flexible hinge - Google Patents

Dashboard having a door mounted on a flexible hinge Download PDF

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Publication number
WO2007147966A2
WO2007147966A2 PCT/FR2007/001010 FR2007001010W WO2007147966A2 WO 2007147966 A2 WO2007147966 A2 WO 2007147966A2 FR 2007001010 W FR2007001010 W FR 2007001010W WO 2007147966 A2 WO2007147966 A2 WO 2007147966A2
Authority
WO
WIPO (PCT)
Prior art keywords
dashboard
hinge
overmolded
gate
net
Prior art date
Application number
PCT/FR2007/001010
Other languages
French (fr)
Other versions
WO2007147966A3 (en
Inventor
David Pereira
Original Assignee
Faurecia Interieur Industrie
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 Faurecia Interieur Industrie filed Critical Faurecia Interieur Industrie
Publication of WO2007147966A2 publication Critical patent/WO2007147966A2/en
Publication of WO2007147966A3 publication Critical patent/WO2007147966A3/en

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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
    • 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
    • B60R21/216—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 comprising tether means for limitation of cover motion during deployment
    • B60R2021/2161—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 comprising tether means for limitation of cover motion during deployment the cover being displaced towards the occupant during deployment

Definitions

  • the present invention relates to a dashboard having a door mounted on a hinge, and a method of manufacturing such a dashboard.
  • Automobile dashboards frequently include an air bag that is a safety device that, when operating, passes through a dashboard opening that is closed by a door to inflate in front of a passenger.
  • Many devices for hinging a door on a dashboard body are already known, designed to create the conditions necessary for the deployment of the airbag without any additional risk for the passengers. These devices generally comprise several members requiring several assembly steps, so that their cost is high.
  • the invention relates to the production of such a dashboard whose gate is mounted on a hinge and whose realization is particularly inexpensive.
  • US-2005/0127641 discloses a method of manufacturing an airbag assembly of the dashboard whose gate is hinged by a hinge member made entirely of a thermoplastic elastomer reinforced with a layer of fabric, no or a film, from the side secured to the gate to the opposite side attached to the dashboard through the joint.
  • This body must therefore have in its entirety properties that allow its welding gate, its mechanical attachment to the dashboard and its deformation in the joint.
  • the member since the member must form a joint, it must be flexible, but since it must also be welded to the door, it must be compatible with the material of this door which is rigid.
  • flexibility properties are essential, and they are reduced by the presence of the elastomer which is elastic and reduces the flexibility that would be obtained with the single layer of reinforcement. For welding, the elastomeric properties are useless, otherwise contrary, although obtained at the cost of an additional cost.
  • Document KP-I 199 228 describes a dashboard having a gate which can separate from the dashboard by breaking along a line of weakness.
  • This gate is secured to a shutter driven to an open position by an inflatable bag that unfolds.
  • the hinge disposed between the door and the dashboard is integrated with the flap and a support member of the flap on the dashboard.
  • a net is disposed on the one hand between the flap and the gate, and on the other hand between the support member of the flap and the dashboard. ; in case of breakage of the hinge at low temperature, the net, which is not fragile at low temperatures, constitutes an auxiliary hinge.
  • the dashboard described in this document is made in a method which comprises the manufacture of a dashboard body, the arrangement of the net on this body, the provision of a shutter member and flap support, with integrated hinge , on the dashboard body with interposition of the net, then the vibration welding of the flap to the gate and the support of the flap to the dashboard body.
  • This method has disadvantages because the attachment of the flap and its support to the dashboard body presents difficulties due to the interposition of the net. Indeed, it is necessary that the projections of the flap and / or the dashboard are aligned and correspond to the mesh of the net so that the vibration welding is effective. It is therefore necessary to position the net accurately on the dashboard, and to check each piece after welding, so that the cost of the dashboard obtained is high.
  • the object of the invention is to take advantage of the properties of a hinge member formed of a simple net, not as an auxiliary hinge, as described in the aforementioned document, but as a single hinge member. So that the hinge member comprising: the net can work reliably, it is necessary that the fastening of the net with on the one hand the flap and on the other hand the support integral with the dashboard is robust and effective, without requiring a delicate positioning, nor a systematic verification.
  • the invention implements, in an initial step, an overmolding of the thread in two parts arranged on either side of a hinge part, the overmoulded parts being particularly effective from the point of view of the resistance and cooperation with the net, and facilitating the fastening with the gate and attachment to the dashboard.
  • the invention relates to a door dash board mounted on a hinge member, of the type in which the hinge member of the articulation is formed by a flexible thread, one side of the hinge member being secured at the gate and an opposite side of the hinge member being attached to a member of the dashboard;
  • the portion of the hinge member secured to the door comprises a first portion of thread overmolded in a flap, and the flap is welded to the door
  • the portion of the hinge member attached to the integral member of the dashboard comprises a second portion of overmolded net attached to an attachment member to the dashboard
  • the hinge portion of the hinge member is formed by a thread portion separating the two overmolded net portions, the thread portion forming the hinge portion being free of over-molding material to maintain its flexibility.
  • the flexible net is the only device connecting the gate to the dashboard after the separation of the gate of the dashboard.
  • the dashboard attachment member comprises a housing of the second overmolded thread portion, such that the second overmolded thread portion is inserted into the housing by pivoting in one direction.
  • the hinge portion of the hinge member is connected to the second molded portion of the thread so that a pulling force applied by the hinge portion to the second portion su ⁇ noulée tend to rotate the second portion overmolded in said pivoting direction.
  • the attachment member to the dashboard comprises fingers which pass through holes in the second overmoulded part during pivoting of the second overmoulded portion in its housing.
  • the second overmoulded portion is locked in its housing by a pulling force exerted by the net on the second overmolded portion.
  • the hinge hinge portion has a large dimension between the two overmolded thread portions, and the hinge portion is folded on itself in a plurality of thicknesses.
  • the folded sections are advantageously kept folded by a retaining device intended to exert a small holding force.
  • the retaining device by folded sections may be chosen from retaining devices by welding, gluing, and sewing.
  • the portion of the hinge member attached to the attachment member to the dashboard has, near the edge of the opening, at least one deflector member for moving the connecting device towards the center of the opening released by the gate.
  • the invention also relates to a method of manufacturing a dashboard, of the type which comprises the production of a dashboard body having a separable gate for forming an airbag passage opening, and the embodiment of a hinge between the gate and the dashboard body;
  • the production of a hinge comprises the following steps: the production of a hinge member by overmoulding a flexible thread in two end portions of the thread, a non-overmolded transverse portion being disposed between the two overmoulded parts, the welding of one of the two molded parts to the gate, and the attachment of the other of the two overmolded parts to the dashboard body.
  • the welding is done by vibration.
  • the attachment of the other over-molded parts to the dashboard body is effected by interlocking the other molded parts in a housing of the dashboard body.
  • FIGS. 1 and 2 show an example of a dashboard of automobile, firstly in the normal state and secondly after operation of an airbag;
  • Figures 3 and 4 show the hinge portion of the dashboard of Figures 1 and 2, in the same two positions;
  • Figure 5 illustrates the mounting of a shutter hinge member according to the invention;
  • Figure 6 shows in enlarged form a part of Figure 5, allowing the description of the mounting of the hinge member on a dashboard;
  • FIG. 7 shows a mold having an insert in the form of a net, ready for the manufacture of a hinge member according to the invention;
  • Figure 8 shows in enlarged form the part of the mold of Figure 7 adjacent to the hinge member hinge.
  • a dashboard body 10 is placed under a windshield 12.
  • a gate 14, intended to separate from the dashboard body 10 to form an opening, is secured to a flap 16 itself connected by a hinge member 18 to the dashboard body
  • the reference 20 designates an air bag placed under the gate 14 and its flap 16.
  • the gate 14 When a collision causes the deployment of the airbag, as shown in Figure 2, the gate 14 is projected towards the windshield 12 by the force of the airbag, and a thread 22 connects the gate 14 to the dashboard by the hinge member 18.
  • the thread 22 comprises a long flexible portion, so that the gate 14 can come to press against the bumper -brise 12.
  • the invention also relates to the case where the hinge portion of the hinge is formed by a short section of thread, so that the edge of the door adjacent the hinge member 18 remains very close to the body of the board. 10 edge, and the opposite end of the door may come possibly hit the inner face of the windshield 12.
  • the invention therefore applies both to hinges having a simple function of articulation by pivoting, as hinges that add to this hinge movement, an additional displacement in translation.
  • Figures 3 and 4 show in greater detail the vicinity of the hinge member 18, illustrated in Figures 1 and 2.
  • a thread 22 is disposed in a first overmolded portion 24, a second molded portion 28 and an intermediate portion of articulation 26.
  • the first overmoulded portion 24 is in fact the flap 16 which is then welded by vibration to the gate 14.
  • the thread portion 22 incorporated in the flap 16 is a reinforcement that increases its mechanical strength.
  • the second overmolded portion 28 includes an end
  • deflector 32 forming deflector (as shown in Figure 4), secured to a body 34 which has a thinned portion 36 allowing articulation of the body 34 around the reinforcing net.
  • the intermediate hinge portion 26 is shown with a stack 30 formed by folding the thread 22 on itself. However, this stack can be removed, the end of the overmolded body 34 being directly connected to the end of the first overmoulded portion 24.
  • the second overmoulded portion 28 is placed in a housing 42 defined by a fastening member 38 integral a plate 40 welded by vibration to the dashboard body 10.
  • FIGS. 5 and 6 show how the second overmolded portion 28 is introduced into the housing 42 delimited by the fixing member 38.
  • the fixing member comprises fingers 41 intended to penetrate holes formed in the second overmoulded portion 28.
  • This second overmolded portion 28 is introduced into the housing 42 by its connecting end to the hinge portion 26, and it can bend around its thinned portion 36.
  • a thrust exerted on the end 32 causes a slight deflection of the body 34 around the thinned portion 36 and the introduction of the end into the housing 42, while the fingers 41 of the fixing member 38 penetrate progressively into the holes of the second overmoulded portion 28.
  • FIG. 3 shows in full the hinge member which comprises the first overmolded part 24 forming the flap 16, the intermediate hinge portion 26 and the second overmolded portion 28 for attachment to the dashboard.
  • An internal member 43 of the dashboard is placed on the opposite side to the hinge 28 and defines the passage of the air bag.
  • the overmolded portion 28 comes into contact with the fingers 41 which collect the upward force.
  • This maintenance Finger engagement with the overmoulded portion is favored because the pulling force applied to the thread 22 has a component applied to the end 32 of the second overmolded portion 28 which is pushed toward the fingers 41. Then, this same pulling force is applied laterally to the lower end of the second overmolded part whose lower end portion tends to pivot towards the thread 22: the latter is then firmly clamped between this end portion and the side of the housing 42.
  • this system ensures automatic double locking, on the one hand of the second part overmolded in its housing, and on the other hand of the net between this second overmoulded part and its housing. It has an integrated security.
  • the net 22 may be either textile or metal, or any sufficiently resistant material of sufficient longevity.
  • the term "net” refers to any flexible web material, for example woven with various weaves, or even - knitted. Thanks to the overmoulding process, it is possible to obtain a very good cooperation between the net and the plastic material on the one hand of the flap 16 and on the other hand of the attachment member to the dashboard.
  • Figures 7 and 8 illustrate the method of manufacturing the hinge member.
  • a lower mold part 44 and an upper mold part 46 define a first cavity 48, a second cavity 50 and a third cavity 52.
  • the two mold parts leave a space corresponding substantially to the thickness of the net.
  • a plastic material is injected into the cavity 48, on both sides of the net previously inserted. Similarly, in the cavity
  • the manufacture of the dashboard according to the invention differs from known techniques in that the method comprises the production of a hinge member by overmolding a flexible net in two end portions, leaving a transverse intermediate portion not overmolding to form the hinge portion, then the attachment by welding of one of the overmoulded parts to the gate, and the attachment of the other part to the dashboard body.
  • This method thus allows an excellent bonding of the net and the shutter; the vibration welding of the flap to the door is excellent because it has no intermediate member that can reduce the welding resistance or requiring a delicate positioning operation.
  • the second overmoulded part cooperates with a mechanical interlocking fastener, this characteristic being advantageous in the dashboard mounting method, it is possible to weld the second molded part on the board body. edge, outside the gate portion, for example in place of the plate 40.

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

Abstract

The invention relates to a dashboard having a door mounted on a hinge member, of the type in which the articulation of the hinge member is formed by a flexible strap, one side of the hinge member being secured to the door and an opposite side being fastened to a member for fastening to the dashboard. The part (24) secured to the door (14) comprises a first strap part overmoulded into a flap (16) and the flap (16) is welded to the door, the part (28) fastened to the member (38) for fastening to the dashboard comprises a second overmoulded strap part, and the articulation part (26) is formed by a strap part separating the two overmoulded strap parts. The invention can be applied to motor vehicle dashboards.

Description

Planche de bord à portillon monté sur charnière souple Operated dashboard with flexible hinge
La présente invention concerne une planche de bord ayant un portillon monté sur une charnière, ainsi qu'un procédé de fabrication d' une telle planche de bord. Les planches de bord d'automobiles comportent fréquemment un sac gonflable constituant un dispositif de sécurité qui, lorsqu'il fonctionne, passe par une ouverture de planche de bord fermée par un portillon pour se gonfler devant un passager. On connaît déjà de nombreux dispositifs d'articulation d'un portillon sur un corps de planche de bord, destinés à créer les conditions nécessaires au déploiement du sac gonflable sans risque supplémentaire pour les passagers . Ces dispositifs comportent en général plusieurs organes néces- sitant plusieurs étapes de montage, si bien que leur coût est élevé .The present invention relates to a dashboard having a door mounted on a hinge, and a method of manufacturing such a dashboard. Automobile dashboards frequently include an air bag that is a safety device that, when operating, passes through a dashboard opening that is closed by a door to inflate in front of a passenger. Many devices for hinging a door on a dashboard body are already known, designed to create the conditions necessary for the deployment of the airbag without any additional risk for the passengers. These devices generally comprise several members requiring several assembly steps, so that their cost is high.
L'invention a pour objet la réalisation d'une telle planche de bord dont le portillon est monté sur une charnière et dont la réalisation est particulièrement peu coûteuse.The invention relates to the production of such a dashboard whose gate is mounted on a hinge and whose realization is particularly inexpensive.
Le document US-2005/0127641 décrit un procédé de fabrication d'un ensemble à sac gonflable de planche de bord dont le portillon est articulé par un organe de charnière constitué entièrement d'un élastomère thermoplastique armé d'une couche de tissu, de non-tissé ou d'un film, allant du côté solidarisé au portillon au côté opposé fixé à la planche de bord en passant par l'articulation. Cet organe doit donc posséder dans sa totalité des propriétés qui permettent son soudage au portillon, sa fixation mécanique à la planche de bord et sa déformation dans l'articulation. En particulier, comme l'organe doit former une articulation, il doit être souple, mais comme il doit aussi être soudé au portillon, il doit être compatible avec le matériau de ce portillon qui est rigide. Pour l'articulation, des propriétés de souplesse sont indispensables, et elles sont réduites par la présence de l' élastomère qui est élastique et réduit la souplesse qui serait obtenue avec la seule couche d' armature . Pour le soudage, les propriétés élastomères sont inutiles, sinon contraires, bien qu'elles soient obtenues au prix d'un surcoût.US-2005/0127641 discloses a method of manufacturing an airbag assembly of the dashboard whose gate is hinged by a hinge member made entirely of a thermoplastic elastomer reinforced with a layer of fabric, no or a film, from the side secured to the gate to the opposite side attached to the dashboard through the joint. This body must therefore have in its entirety properties that allow its welding gate, its mechanical attachment to the dashboard and its deformation in the joint. In particular, since the member must form a joint, it must be flexible, but since it must also be welded to the door, it must be compatible with the material of this door which is rigid. For the joint, flexibility properties are essential, and they are reduced by the presence of the elastomer which is elastic and reduces the flexibility that would be obtained with the single layer of reinforcement. For welding, the elastomeric properties are useless, otherwise contrary, although obtained at the cost of an additional cost.
Le document KP-I 199 228 décrit une planche de bord ayant un portillon qui peut se séparer de la planche de bord par cassure suivant une ligne d'affaiblissement. Ce portillon est solidaire d'un volet chassé vers une position d'ouverture par un sac gonflable qui se déploie. La charnière disposée entre le portillon et la planche de bord est intégrée au volet et à un organe de support du volet sur la planche de bord. A titre de précaution pour le cas où cette charnière présenterait une défaillance aux basses températures, un filet est disposé d'une part entre le volet et le portillon, et d'autre part entre l'organe de support du volet et la planche de bord ; en cas de cassure de la char- nière à basse température, le filet, qui n'est pas fragile aux basses températures, constitue une charnière auxiliaire. La planche de bord décrite dans ce document est réalisée dans un procédé qui comprend la fabrication d'un corps de planche de bord, la disposition du filet sur ce corps, la disposition d'un organe formant volet et support de volet, avec charnière intégrée, sur le corps de planche de bord avec interposition du filet, puis le soudage par vibration du volet au portillon et du support du volet au corps de planche de bord. Ce procédé présente des inconvénients parce que la fixation du volet et de son support au corps de planche de bord présente des difficultés dues à l ' interposition du filet. En effet, il est nécessaire que des saillies du volet et/ou de la planche de bord soient alignées et correspondent à la maille du filet pour que le soudage par vibration soit efficace. Il est donc nécessaire de positionner le filet avec précision sur la planche de bord, et de vérifier chaque pièce après soudage, de sorte que le coût de la planche de bord obtenue est élevé. L'invention a pour objet de tirer avantage des propriétés d'un organe de charnière formé d'un simple filet, non comme charnière auxiliaire, comme décrit dans le document précité, mais comme organe unique de charnière. Pour que l ' organe de charnière comprenant: le filet puisse travailler de manière fiable, il est nécessaire que la solidarisation du filet avec d'une part le volet et d'autre part le support solidaire de la planche de bord soit robuste et efficace, sans nécessiter un positionnement délicat, ni une vérification systématique.Document KP-I 199 228 describes a dashboard having a gate which can separate from the dashboard by breaking along a line of weakness. This gate is secured to a shutter driven to an open position by an inflatable bag that unfolds. The hinge disposed between the door and the dashboard is integrated with the flap and a support member of the flap on the dashboard. As a precaution for the case where this hinge would fail at low temperatures, a net is disposed on the one hand between the flap and the gate, and on the other hand between the support member of the flap and the dashboard. ; in case of breakage of the hinge at low temperature, the net, which is not fragile at low temperatures, constitutes an auxiliary hinge. The dashboard described in this document is made in a method which comprises the manufacture of a dashboard body, the arrangement of the net on this body, the provision of a shutter member and flap support, with integrated hinge , on the dashboard body with interposition of the net, then the vibration welding of the flap to the gate and the support of the flap to the dashboard body. This method has disadvantages because the attachment of the flap and its support to the dashboard body presents difficulties due to the interposition of the net. Indeed, it is necessary that the projections of the flap and / or the dashboard are aligned and correspond to the mesh of the net so that the vibration welding is effective. It is therefore necessary to position the net accurately on the dashboard, and to check each piece after welding, so that the cost of the dashboard obtained is high. The object of the invention is to take advantage of the properties of a hinge member formed of a simple net, not as an auxiliary hinge, as described in the aforementioned document, but as a single hinge member. So that the hinge member comprising: the net can work reliably, it is necessary that the fastening of the net with on the one hand the flap and on the other hand the support integral with the dashboard is robust and effective, without requiring a delicate positioning, nor a systematic verification.
A cet effet, l ' invention met en oeuvre, dans une étape initiale, un surmoulage du filet dans deux parties disposées de part et d'autre d'une partie d'articulation, les parties surmoulées étant particulièrement efficaces au point de vue de la résistance et de la coopération avec le filet, et facilitant la solidarisation avec le portillon et la fixation à la planche de bord.For this purpose, the invention implements, in an initial step, an overmolding of the thread in two parts arranged on either side of a hinge part, the overmoulded parts being particularly effective from the point of view of the resistance and cooperation with the net, and facilitating the fastening with the gate and attachment to the dashboard.
Plus précisément, l'invention concerne une planche de bord à portillon monté sur un organe de charnière, du type dans lequel l'articulation de l'organe de charnière est formée par un filet souple, un côté de l ' organe de charnière étant solidarisé au portillon et un côté opposé de l ' organe de charnière étant fixé à un organe de la planche de bord ; selon l'invention, la partie de l'organe de charnière solidarisée au portillon comprend une première partie de filet surmoulée dans un volet, et le volet est soudé au portillon , la partie de l ' organe de charnière fixée à l ' organe solidaire de la planche de bord comprend une seconde partie de filet surmoulée fixée à un organe de fixation à la planche de bord, et la partie d'articulation de l'organe de charnière est formée par une partie de filet séparant les deux parties de filet surmoulées , la partie de filet formant la partie d' articulation étant dépourvue de matière de sur- moulage afin qu'elle garde sa souplesse.More specifically, the invention relates to a door dash board mounted on a hinge member, of the type in which the hinge member of the articulation is formed by a flexible thread, one side of the hinge member being secured at the gate and an opposite side of the hinge member being attached to a member of the dashboard; according to the invention, the portion of the hinge member secured to the door comprises a first portion of thread overmolded in a flap, and the flap is welded to the door, the portion of the hinge member attached to the integral member of the dashboard comprises a second portion of overmolded net attached to an attachment member to the dashboard, and the hinge portion of the hinge member is formed by a thread portion separating the two overmolded net portions, the thread portion forming the hinge portion being free of over-molding material to maintain its flexibility.
De préférence, le filet souple constitue le seul dispositif de liaison du portillon à la planche de bord après la séparation du portillon de la planche de bord.Preferably, the flexible net is the only device connecting the gate to the dashboard after the separation of the gate of the dashboard.
De préférence, l ' organe de fixation à la planche de bord comprend un logement de la seconde partie de filet surmoulée, telle que la seconde partie de filet surmoulée est introduite dans le logement par pivotement dans un sens . De préférence, la partie d'articulation de l'organe de charnière est raccordée à la seconde partie de filet surmoulée de manière qu'une force de traction appliquée par la partie d'articulation à la seconde partie suπnoulée ait tendance à faire pivoter la seconde partie surmoulée dans ledit sens de pivotement .Preferably, the dashboard attachment member comprises a housing of the second overmolded thread portion, such that the second overmolded thread portion is inserted into the housing by pivoting in one direction. Preferably, the hinge portion of the hinge member is connected to the second molded portion of the thread so that a pulling force applied by the hinge portion to the second portion suπnoulée tend to rotate the second portion overmolded in said pivoting direction.
De préférence , l ' organe de fixation à la planche de bord comprend des doigts qui passent dans des trous de la seconde partie surmoulée lors du pivotement de la seconde partie surmoulée dans son logement.Preferably, the attachment member to the dashboard comprises fingers which pass through holes in the second overmoulded part during pivoting of the second overmoulded portion in its housing.
De préférence, la seconde partie surmoulée est bloquée dans son logement par une force de traction exercée par le filet sur la seconde partie surmoulée .Preferably, the second overmoulded portion is locked in its housing by a pulling force exerted by the net on the second overmolded portion.
Dans un mode de réalisation, la partie d'articulation de charnière a une dimension importante entre les deux parties de filet surmoulées, et la partie d'articulation est pliée sur elle-même en plusieurs épaisseurs . Les tronçons plies sont avantageusement maintenus plies par un dispositif de retenue destiné à exercer une faible force de retenue . Le dispositif de retenue par des tronçons plies peut être choisi parmi les dispositifs de retenue par soudage, par collage, et par couture.In one embodiment, the hinge hinge portion has a large dimension between the two overmolded thread portions, and the hinge portion is folded on itself in a plurality of thicknesses. The folded sections are advantageously kept folded by a retaining device intended to exert a small holding force. The retaining device by folded sections may be chosen from retaining devices by welding, gluing, and sewing.
De préférence, la partie de l ' organe de charnière fixée à l'organe de fixation à la planche de bord possède, à proximité du bord de l'ouverture, au moins un organe déflecteur destiné à écarter le dispositif de liaison vers le centre de l ' ouverture dégagée par le portillon .Preferably, the portion of the hinge member attached to the attachment member to the dashboard has, near the edge of the opening, at least one deflector member for moving the connecting device towards the center of the opening released by the gate.
L'invention concerne aussi un procédé de fabrication d'une planche de bord, du type qui comprend la réalisation d'un corps de planche de bord ayant un portillon séparable destiné à former une ouverture de passage de sac gonflable, et la réalisation d'une charnière entre le portillon et le corps de planche de bord ; selon l'invention, la réalisation d'une charnière comprend les étapes suivantes : la réali- sation d'un organe de charnière par surmoulage d'un filet souple dans deux parties d'extrémité du filet, une partie transversale non surmoulée de filet étant disposée entre les deux parties surmoulées , le soudage de l ' une des deux parties surmoulées au portillon, et la fixation de l'autre des deux parties surmoulées au corps de planche de bord.The invention also relates to a method of manufacturing a dashboard, of the type which comprises the production of a dashboard body having a separable gate for forming an airbag passage opening, and the embodiment of a hinge between the gate and the dashboard body; According to the invention, the production of a hinge comprises the following steps: the production of a hinge member by overmoulding a flexible thread in two end portions of the thread, a non-overmolded transverse portion being disposed between the two overmoulded parts, the welding of one of the two molded parts to the gate, and the attachment of the other of the two overmolded parts to the dashboard body.
De préférence, le soudage est effectué par vibration. De préférence, la fixation de l'autre des parties sur- moulées au corps de planche de bord est effectuée par emboîtement de l ' autre des parties surmoulées dans un logement du corps de planche de bord.Preferably, the welding is done by vibration. Preferably, the attachment of the other over-molded parts to the dashboard body is effected by interlocking the other molded parts in a housing of the dashboard body.
D ' autres caractéristiques et avantages de l ' invention seront mieux compris à la lecture de la description qui va suivre d'un exemple de réalisation, faite en référence aux dessins annexés sur lesquels : les figures 1 et 2 représentent un exemple de planche de bord d'automobile, d'une part à l'état normal et d'autre part après fonctionnement d'un sac gonflable ; les figures 3 et 4 représentent la partie de charnière de la planche de bord des figures 1 et 2 , dans les deux mêmes positions ; la figure 5 illustre le montage d'un organe de charnière à volet selon l ' invention ; la figure 6 représente sous forme agrandie une partie de la figure 5 , permettant la description du montage de 1 ' organe de charnière sur une planche de bord ; la figure 7 représente un moule ayant un insert sous forme d'un filet, prêt pour la fabrication d'un organe de charnière selon l'invention ; et la figure 8 représente sous forme agrandie la partie du moule de la figure 7 voisine de l ' articulation de 1 ' organe de charnière .Other features and advantages of the invention will be better understood on reading the following description of an exemplary embodiment, with reference to the accompanying drawings in which: FIGS. 1 and 2 show an example of a dashboard of automobile, firstly in the normal state and secondly after operation of an airbag; Figures 3 and 4 show the hinge portion of the dashboard of Figures 1 and 2, in the same two positions; Figure 5 illustrates the mounting of a shutter hinge member according to the invention; Figure 6 shows in enlarged form a part of Figure 5, allowing the description of the mounting of the hinge member on a dashboard; FIG. 7 shows a mold having an insert in the form of a net, ready for the manufacture of a hinge member according to the invention; and Figure 8 shows in enlarged form the part of the mold of Figure 7 adjacent to the hinge member hinge.
Sur les figures 1 et 2 , -un corps de planche de bord 10 est placé sous un pare-brise 12. Un portillon 14, destiné à se séparer du corps de planche de bord 10 pour former une ouverture, est solidarisé à un volet 16 lui-même raccordé par un organe de charnière 18 au corps de planche de bordIn Figures 1 and 2, a dashboard body 10 is placed under a windshield 12. A gate 14, intended to separate from the dashboard body 10 to form an opening, is secured to a flap 16 itself connected by a hinge member 18 to the dashboard body
10. La référence 20 désigne un sac gonflable placé sous le portillon 14 et son volet 16.10. The reference 20 designates an air bag placed under the gate 14 and its flap 16.
Lorsqu'une collision provoque le déploiement du sac gonflable, comme l'indique la figure 2, le portillon 14 est projeté vers le pare-brise 12 par la force du sac gonflable, et un filet 22 relie le portillon 14 à la planche de bord par l'organe de charnière 18. Dans le mode de réalisation représenté, le filet 22 comprend une longue partie souple, si bien que le portillon 14 peut venir se plaquer contre le pare-brise 12.When a collision causes the deployment of the airbag, as shown in Figure 2, the gate 14 is projected towards the windshield 12 by the force of the airbag, and a thread 22 connects the gate 14 to the dashboard by the hinge member 18. In the embodiment shown, the thread 22 comprises a long flexible portion, so that the gate 14 can come to press against the bumper -brise 12.
Cependant, l'invention concerne aussi le cas où la partie d'articulation de la charnière est formée par un court tronçon de filet, de sorte que le bord du portillon voisin de l'organe de charnière 18 reste très près du corps de planche de bord 10, et l'extrémité opposée du portillon peut venir éventuellement heurter la face intérieure du pare-brise 12.However, the invention also relates to the case where the hinge portion of the hinge is formed by a short section of thread, so that the edge of the door adjacent the hinge member 18 remains very close to the body of the board. 10 edge, and the opposite end of the door may come possibly hit the inner face of the windshield 12.
L'invention s'applique donc aussi bien à des charnières ayant une simple fonction d'articulation par pivotement, qu'à des charnières qui ajoutent, à ce mouvement d'articulation, un déplacement supplémentaire en translation .The invention therefore applies both to hinges having a simple function of articulation by pivoting, as hinges that add to this hinge movement, an additional displacement in translation.
Les figures 3 et 4 représentent plus en détail le voisinage de l'organe de charnière 18, illustré par les figures 1 et 2. Un filet 22 est disposé dans une première partie surmoulée 24, une seconde partie surmoulée 28 et une partie intermédiaire d'articulation 26.Figures 3 and 4 show in greater detail the vicinity of the hinge member 18, illustrated in Figures 1 and 2. A thread 22 is disposed in a first overmolded portion 24, a second molded portion 28 and an intermediate portion of articulation 26.
La première partie surmoulée 24 constitue en fait le volet 16 qui est ensuite soudé par vibration au portillon 14. La partie de filet 22 incorporée au volet 16 en constitue une armature qui accroît sa résistance mécanique.The first overmoulded portion 24 is in fact the flap 16 which is then welded by vibration to the gate 14. The thread portion 22 incorporated in the flap 16 is a reinforcement that increases its mechanical strength.
La seconde partie surmoulée 28 comprend une extrémitéThe second overmolded portion 28 includes an end
32 formant déflecteur (comme indiqué sur la figure 4) , solidaire d'un corps 34 qui possède une partie amincie 36 permettant une articulation du corps 34 autour du filet d' armature .32 forming deflector (as shown in Figure 4), secured to a body 34 which has a thinned portion 36 allowing articulation of the body 34 around the reinforcing net.
La partie intermédiaire d'articulation 26 est représentée avec un empilement 30 formé par pliage du filet 22 sur lui-même. Cependant, cet empilement peut être supprimé, l'extrémité du corps surmoulé 34 étant directement reliée à l'extrémité de la première partie surmoulée 24.The intermediate hinge portion 26 is shown with a stack 30 formed by folding the thread 22 on itself. However, this stack can be removed, the end of the overmolded body 34 being directly connected to the end of the first overmoulded portion 24.
La seconde partie surmoulée 28 est placée dans un logement 42 délimité par un organe de fixation 38 solidaire d'une plaque 40, soudée par vibration au corps de planche de bord 10.The second overmoulded portion 28 is placed in a housing 42 defined by a fastening member 38 integral a plate 40 welded by vibration to the dashboard body 10.
Les figures 5 et 6 indiquent comment la seconde partie surmoulée 28 est introduite dans le logement 42 délimité par l'organe de fixation 38. L'organe de fixation comporte des doigts 41 destinés à pénétrer dans des trous formés dans la seconde partie surmoulée 28. Cette seconde partie surmoulée 28 est introduite dans le logement 42 par son extrémité de raccordement à la partie d'articulation 26, et elle peut fléchir autour de sa partie amincie 36.FIGS. 5 and 6 show how the second overmolded portion 28 is introduced into the housing 42 delimited by the fixing member 38. The fixing member comprises fingers 41 intended to penetrate holes formed in the second overmoulded portion 28. This second overmolded portion 28 is introduced into the housing 42 by its connecting end to the hinge portion 26, and it can bend around its thinned portion 36.
Depuis la position indiquée sur la figure 6, une poussée exercée sur l'extrémité 32 provoque un léger fléchissement du corps 34 autour de la partie amincie 36 et 1 ' introduction de l ' extrémité dans le logement 42 , alors que les doigts 41 de l'organe de fixation 38 pénètrent progressivement dans les trous de la seconde partie surmoulée 28.From the position indicated in FIG. 6, a thrust exerted on the end 32 causes a slight deflection of the body 34 around the thinned portion 36 and the introduction of the end into the housing 42, while the fingers 41 of the fixing member 38 penetrate progressively into the holes of the second overmoulded portion 28.
Lorsque les doigts 41 ont ainsi pénétré dans les trous antagonistes, le corps 34 a tendance è se redresser si bien que la seconde partie surmoulée 28 prend la position indi- quée sur la figure 3. Dans une variante, ce maintien en position de la seconde partie surmoulée 28 peut être assuré par tout autre moyen, par exemple des griffes élastiques placées à l'extrémité des doigts 41 pour empêcher cette seconde partie de sortir de son logement. La figure 5 représente en totalité l ' organe de charnière qui comprend la première partie surmoulée 24 formant le volet 16, la partie intermédiaire d'articulation 26 et la seconde partie surmoulée 28 de fixation à la planche de bord. Un organe interne 43 de la planche de bord est placé du côté opposé à la charnière 28 et délimite le passage du sac gonflable .When the fingers 41 have thus penetrated the opposing holes, the body 34 tends to straighten up so that the second overmolded part 28 takes the position shown in FIG. 3. In a variant, this holding in position of the second overmoulded portion 28 may be provided by any other means, for example elastic claws placed at the end of the fingers 41 to prevent this second part out of its housing. Figure 5 shows in full the hinge member which comprises the first overmolded part 24 forming the flap 16, the intermediate hinge portion 26 and the second overmolded portion 28 for attachment to the dashboard. An internal member 43 of the dashboard is placed on the opposite side to the hinge 28 and defines the passage of the air bag.
On note sur la figure 4 qu ' une force de traction exercée sur la partie intermédiaire d' articulation formée par le filet 22 a tendance à faire remonter la seconde partie surmoulée 28. Cependant, ce mouvement est empêché de deux manières différentes .Note in Figure 4 that a tensile force exerted on the intermediate hinge portion formed by the thread 22 tends to raise the second overmoulded portion 28. However, this movement is prevented in two different ways.
D'abord, la partie surmoulée 28 vient au contact des doigts 41 qui encaissent la force ascendante. Ce maintien en coopération des doigts avec la partie surmoulée est favorisé parce que la force de traction appliquée au filet 22 a une composante appliquée à l ' extrémité 32 de la seconde partie surmoulée 28 qui est poussée vers les doigts 41. Ensuite, cette même force de traction est appliquée latéralement à l ' extrémité inférieure de la seconde partie surmoulée dont la portion d'extrémité inférieure tend à pivoter vers le filet 22 : celui-ci est alors fermement serré entre cette portion d'extrémité et le côté du logement 42.First, the overmolded portion 28 comes into contact with the fingers 41 which collect the upward force. This maintenance Finger engagement with the overmoulded portion is favored because the pulling force applied to the thread 22 has a component applied to the end 32 of the second overmolded portion 28 which is pushed toward the fingers 41. Then, this same pulling force is applied laterally to the lower end of the second overmolded part whose lower end portion tends to pivot towards the thread 22: the latter is then firmly clamped between this end portion and the side of the housing 42.
Ainsi, ce système assure un double blocage automatique, d'une part de la seconde partie surmoulée dans son logement, et d'autre part du filet entre cette seconde partie surmoulée et son logement. Il possède ainsi une sécurité intégrée. Le filet 22 peut être soit textile, soit métallique, soit en tout matériau suffisamment résistant et de longévité suffisante. Le terme "filet" désigne tout matériau souple en nappe, par exemple tissé à diverses armures, ou même -,^ tricoté. Grâce au procédé de surmoulage, il est possible d'obtenir une très bonne coopération entre le filet et la matière plastique d'une part du volet 16 et d'autre part de 1 ' organe de fixation à la planche de bord.Thus, this system ensures automatic double locking, on the one hand of the second part overmolded in its housing, and on the other hand of the net between this second overmoulded part and its housing. It has an integrated security. The net 22 may be either textile or metal, or any sufficiently resistant material of sufficient longevity. The term "net" refers to any flexible web material, for example woven with various weaves, or even - knitted. Thanks to the overmoulding process, it is possible to obtain a very good cooperation between the net and the plastic material on the one hand of the flap 16 and on the other hand of the attachment member to the dashboard.
Les figures 7 et 8 illustrent le procédé de fabrication de l'organe de charnière. Selon ce procédé, une partie infé- rieure de moule 44 et une partie supérieure de moule 46 délimitent une première cavité 48, une seconde cavité 50 et une troisième cavité 52. Dans les deux passages reliant d'une part la cavité 48 à la cavité 50 et d'autre part la cavité 50 à la cavité 52 , les deux parties de moule laissent un espace correspondant pratiquement à l'épaisseur du filet.Figures 7 and 8 illustrate the method of manufacturing the hinge member. According to this method, a lower mold part 44 and an upper mold part 46 define a first cavity 48, a second cavity 50 and a third cavity 52. In the two passages connecting on the one hand the cavity 48 to the cavity 50 and secondly the cavity 50 to the cavity 52, the two mold parts leave a space corresponding substantially to the thickness of the net.
Lors de la fabrication de l ' organe de charnière , une matière plastique est injectée dans la cavité 48, des deux côtés du filet préalablement inséré. De même, dans la cavitéDuring the manufacture of the hinge member, a plastic material is injected into the cavity 48, on both sides of the net previously inserted. Similarly, in the cavity
52, une matière plastique est injectée des deux côtés du filet. Au contraire, dans la cavité 50 dans laquelle est disposé l'empilement de couches du filet, aucune matière plastique n'est injectée, si bien que l'empilement 30, qui a de préférence été au préalable maintenu par soudage, collage, couture, etc., n'est pas enrobé de matière plastique. La fabrication de la planche de bord selon l ' invention se distingue des techniques connues en ce que le procédé comprend la réalisation d'un organe de charnière par surmoulage d'un filet souple dans deux parties d'extrémité, laissant une partie intermédiaire transversale non surmoulée destinée à former la partie d'articulation, puis la fixation par soudage de l ' une des parties surmoulées au portillon, et la fixation de l'autre partie au corps de planche de bord.52, a plastic material is injected on both sides of the net. On the contrary, in the cavity 50 in which the stack of layers of the net is arranged, no plastic material is injected, so that the stack 30, which has preferably been previously held by welding, gluing, sewing, etc., is not coated with plastic. The manufacture of the dashboard according to the invention differs from known techniques in that the method comprises the production of a hinge member by overmolding a flexible net in two end portions, leaving a transverse intermediate portion not overmolding to form the hinge portion, then the attachment by welding of one of the overmoulded parts to the gate, and the attachment of the other part to the dashboard body.
Ce procédé permet ainsi une excellente solidarisation du filet et du volet ; le soudage par vibration du volet au portillon est excellent, car il ne comporte aucun organe intermédiaire pouvant réduire la résistance de soudage ou nécessitant une opération délicate de positionnement.This method thus allows an excellent bonding of the net and the shutter; the vibration welding of the flap to the door is excellent because it has no intermediate member that can reduce the welding resistance or requiring a delicate positioning operation.
Bien qu ' on ait indiqué que la seconde partie surmoulée coopérait avec un organe de fixation par emboîtement mécanique, cette caractéristique étant avantageuse dans le procédé de montage de la planche de bord, il est possible de souder la seconde partie surmoulée sur le corps de planche de bord, à l'extérieur de la partie formant portillon, par exemple à la place de la plaque 40. Although it has been stated that the second overmoulded part cooperates with a mechanical interlocking fastener, this characteristic being advantageous in the dashboard mounting method, it is possible to weld the second molded part on the board body. edge, outside the gate portion, for example in place of the plate 40.

Claims

REVENDICATIONS
1. Planche de bord à portillon monté sur un organe de charnière, du type dans lequel l ' articulation de l ' organe de charnière est formée par un filet souple, un côté de 1 ' organe de charnière étant solidarisé au portillon et un côté opposé de l ' organe de charnière étant fixé à un organe de fixation à la planche de bord, caractérisée en ce que la partie (24) de l'organe de charnière solidarisée au portillon (14) comprend une première partie de filet surmoulée dans un volet (16) , et le volet (16) est soudé au portillon, la partie (28) de l'organe de charnière fixée à l'organe (38) de fixation à la planche de bord comprend une seconde partie de filet surmoulée fixée à l ' organe de fixation à la planche de bord, et la partie d'articulation (26) de l'organe de charnière est formée par une partie de filet séparant les deux parties de filet surmoulées , la partie de filet formant la partie d'articulation (26) étant dépourvue de matière de surmoulage afin qu ' elle garde sa souplesse .1. A dashboard with a gate mounted on a hinge member, of the type in which the articulation of the hinge member is formed by a flexible net, one side of the hinge member being secured to the gate and an opposite side. the hinge member being attached to a fastening member to the dashboard, characterized in that the portion (24) of the hinge member secured to the gate (14) comprises a first portion of the net overmolded in a shutter (16), and the flap (16) is welded to the door, the portion (28) of the hinge member attached to the dashboard attachment member (38) comprises a second portion of the overmolded net attached to the attachment member to the dashboard, and the hinge portion (26) of the hinge member is formed by a thread portion separating the two overmolded thread portions, the thread portion forming the dart portion. articulation (26) being devoid of surmou material so that it retains its flexibility.
2. Planche de bord selon la revendication 1 , caractérisée en ce que le filet souple (22) constitue le seul dispositif de liaison du portillon (14) à la planche de bord après la séparation du portillon (14) de la planche de bord.2. Dashboard according to claim 1, characterized in that the flexible net (22) is the only connecting device of the gate (14) to the dashboard after the separation of the gate (14) of the dashboard.
3. Planche de bord selon l ' une des revendications 1 et 2, caractérisée en ce que l'organe (38) de fixation à la planche de bord comprend un logement (42) de la seconde partie de filet surmoulée (28) de forme telle que la seconde partie de filet surmoulée est introduite dans le logement par pivotement dans un sens .3. Dashboard according to one of claims 1 and 2, characterized in that the member (38) for attachment to the dashboard comprises a housing (42) of the second portion of overmolded net (28) shaped such that the second part of the overmolded net is introduced into the housing by pivoting in one direction.
4. Planche de bord selon la revendication 3 , caractérisée en ce que la partie d'articulation (26) de l'organe de charnière est raccordée à la seconde partie de filet surmoulée (28) de manière qu'une force de traction appliquée par la partie d'articulation (26) à la seconde partie surmoulée (28) ait tendance à faire pivoter la seconde partie surmoulée (28) dans ledit sens de pivotement. 4. Dashboard according to claim 3, characterized in that the hinge portion (26) of the hinge member is connected to the second overmolded thread portion (28) so that a tensile force applied by the hinge portion (26) at the second molded portion (28) tends to pivot the second molded portion (28) in said pivoting direction.
5. Planche de bord selon l 'une des revendications 3 et 4, caractérisée en ce que l'organe (38) de fixation à la planche de bord comprend des doigts (41) qui passent dans des trous de la seconde partie surmoulée (28) lors du pivotement de la seconde partie surmoulée (28) dans son logement.5. Dashboard according to one of claims 3 and 4, characterized in that the member (38) for attachment to the dashboard comprises fingers (41) which pass through holes in the second overmoulded portion (28). ) during the pivoting of the second overmoulded portion (28) in its housing.
6. Planche de bord selon l ' une quelconque des revendications 3 à 5 , caractérisée en ce que la seconde partie surmoulée (28) est bloquée dans son logement (42) par une force de traction exercée par le filet (22) sur la seconde partie surmoulée .6. Dashboard according to any one of claims 3 to 5, characterized in that the second overmoulded portion (28) is locked in its housing (42) by a traction force exerted by the net (22) on the second overmolded part.
7. Planche de bord selon l 'une quelconque des revendications précédentes, caractérisée en ce que la partie d'articulation (26) de charnière a une dimension importante entre les deux parties de filet surmoulées (24, 28), et la partie d'articulation (26) est pliée sur elle-même en plusieurs épaisseurs .7. Dashboard according to any one of the preceding claims, characterized in that the hinge portion (26) has a large dimension between the two overmolded thread parts (24, 28), and the part of articulation (26) is folded on itself in several thicknesses.
8. Planche de bord selon la revendication 7 , caractérisée en ce que les tronçons plies sont maintenus plies par un dispositif de retenue destiné à exercer une faible force de retenue .8. Dashboard according to claim 7, characterized in that the folded sections are kept folded by a retaining device for exerting a low holding force.
9. Planche de bord selon l ' une quelconque des revendications précédentes, caractérisée en ce que la partie (28) de l'organe de charnière (18) fixée à l'organe (38) de fixation à la planche de bord possède, à proximité du bord de l'ouverture, au moins un organe déflecteur (32) destiné à écarter le dispositif de liaison vers le centre de 1 ' ouverture dégagée par le portillon .9. Dashboard according to any one of the preceding claims, characterized in that the portion (28) of the hinge member (18) attached to the member (38) for attachment to the dashboard has, near the edge of the opening, at least one deflector member (32) for moving the connecting device towards the center of the opening released by the door.
10. Procédé de fabrication d'une planche de bord, du type qui comprend : la réalisation d'un corps (10) de planche de bord ayant un portillon séparable (14) destiné à former une ouverture de passage de sac gonflable, et la réalisation d'une charnière entre le portillon (14) et le corps (10) de planche de bord, caractérisé en ce que la réalisation d'une charnière comprend les étapes suivantes : la réalisation d'un organe de charnière par surmoulage d'un filet souple (22) dans deux parties d'extrémité du filet, une partie transversale non surmoulée de filet étant disposée entre les deux parties surmoulées , le soudage de l'une (24) des deux parties surmoulées au portillon (14) , et la fixation de l'autre (28) des deux parties surmoulées au corps de planche de bord.A method of manufacturing a dashboard, of the type which comprises: providing a dashboard body (10) having a separable gate (14) for forming an airbag passage opening, and embodiment of a hinge between the gate (14) and the body (10) of the dashboard, characterized in that the production of a hinge comprises the following steps: the production of a hinge member by overmolding a flexible thread (22) in two end portions of the thread, a non-overmolded transverse portion of thread being disposed between the two overmolded portions, the welding of one ) of the two parts molded to the gate (14), and the fixing of the other (28) of the two overmoulded parts to the dashboard body.
11. Procédé selon la revendication 10, caractérisé en ce que la fixation de l'autre (28) des parties surmoulées au corps (10) de planche de bord est effectuée par emboîtement de l'autre (28) des parties surmoulées dans un logement (42) d'un organe (38) de fixation à la planche de bord. 11. A method according to claim 10, characterized in that the fixing of the other (28) overmoulded portions to the body (10) of the dashboard is performed by interlocking the other (28) of the molded parts in a housing (42) a member (38) for attachment to the dashboard.
PCT/FR2007/001010 2006-06-21 2007-06-18 Dashboard having a door mounted on a flexible hinge WO2007147966A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0605544A FR2902727B1 (en) 2006-06-21 2006-06-21 DASHBOARD WITH PORTILLON MOUNTED ON FLEXIBLE HINGE
FR0605544 2006-06-21

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WO2007147966A2 true WO2007147966A2 (en) 2007-12-27
WO2007147966A3 WO2007147966A3 (en) 2008-02-21

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CN103332163A (en) * 2013-06-10 2013-10-02 锦州锦恒汽车安全系统有限公司 SRS decorative cover turning device mounted on steering wheel
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