WO2008003885A1 - Double-skinned exterior panel for a motor vehicle - Google Patents

Double-skinned exterior panel for a motor vehicle Download PDF

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Publication number
WO2008003885A1
WO2008003885A1 PCT/FR2007/051511 FR2007051511W WO2008003885A1 WO 2008003885 A1 WO2008003885 A1 WO 2008003885A1 FR 2007051511 W FR2007051511 W FR 2007051511W WO 2008003885 A1 WO2008003885 A1 WO 2008003885A1
Authority
WO
WIPO (PCT)
Prior art keywords
edge
wall
rim
groove
outer edge
Prior art date
Application number
PCT/FR2007/051511
Other languages
French (fr)
Inventor
Hervé LEGROS
Yvon Tetu
Original Assignee
Renault S.A.S.
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 Renault S.A.S. filed Critical Renault S.A.S.
Publication of WO2008003885A1 publication Critical patent/WO2008003885A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D27/00—Connections between superstructure or understructure sub-units
    • B62D27/02—Connections between superstructure or understructure sub-units rigid
    • B62D27/026—Connections by glue bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/021—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • B62D25/105—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles for motor cars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/0096—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by using permanent deformation

Definitions

  • the present invention relates to an outer panel with a double wall of a motor vehicle, adapted to deform under the effect of impacts and in particular pedestrian impacts.
  • Known double-walled outer panels comprise a metal outer wall and an inner wall, for example made of thermoplastic or thermoplastic material, forming a lining. These two walls are then assembled by their edge to form the panel.
  • the inner wall has an inner edge and along this inner edge, on one side, an inner bearing edge and on the other side an opposite inner edge.
  • As for the outer wall it has an outer edge and on one of its faces, an outer edge along a zone of applique.
  • the outer wall is then adapted to cover the inner wall so that the applied area comes to bear against the internal bearing edge, and the outer edge is likely to be folded against the opposite inner edge by means of a wheel tool carried for example by the arm of a controllable robot. In this way, the inner edge is crimped between the applied area and the outer edge.
  • an adhesive for example of the epoxy type, is generally applied between the zone of application and the internal border of support in order to perfect the connection of the two walls.
  • an adhesive for example of the epoxy type, is generally applied between the zone of application and the internal border of support in order to perfect the connection of the two walls.
  • document JP 10 180 373 which describes such a panel made by assembling two walls.
  • the adhesive is well intended to perfect the bond between the two walls, however, after its application a certain time is necessary for it to harden and that it is fully active.
  • the outer edge compresses the adhesive between the area of application and the internal border of support, but it slightly relaxes the internal border after the passage of the wheel because of the elasticity of the metal, without the adhesive being fully active. he will usually be after a baking. Therefore, the inner wall is likely to slide slightly inside the outer wall or to deviate substantially.
  • a problem that arises and that aims to solve the present invention is to provide a double-walled outer panel, the two walls remain in a fixed position after the passage of the wheel even though the adhesive is not yet completely active.
  • the present invention proposes a double wall outer wall of a motor vehicle, said outer panel comprising a metal outer wall and an inner lining wall, said inner wall having an inner edge. an internal support rim and an internal rim opposite to said inner bearing rim, said external wall having an outer edge, an outer rim and an applicator zone which runs along said outer rim, said outer wall being adapted to cover said inner wall, so that said applied area comes to bear against said inner bearing edge, while said outer edge is adapted to be folded against said opposite inner edge to crimp said inner edge between said inner zone; applies and said outer border; according to the invention, said opposite inner edge has a groove which runs along said inner edge and said outer edge is adapted to be bent in said groove to lock in translation said walls against each other.
  • a feature of the invention lies in the implementation of a groove in the opposite inner edge so as to fold down and bend the outer edge of the outer wall.
  • the outer edge remains in contact with the opposite inner edge, since the outer edge which extends is anchored in the groove, and also said applied area is in contact with the inner bearing edge. Therefore, the inner edge is held crimped between the applique area and the outer edge, even after the crimping wheel has passed, so that the adhesive that is not yet fully active, can be later without the walls have moved relative to each other.
  • said outer edge has cutouts along said outer edge so as to form tabs spaced step by step, said tabs which then protrude from the outer edge are alone adapted to be bent in said groove.
  • the tabs are they adapted to maintain the outer edge bearing against the inner edge even in the outer edge area between two consecutive tongues.
  • said opposite internal edge has notches which open into said groove, and said outer edge is stamped into said notch. These notches extend substantially transversely in the opposite inner edge and they then open substantially perpendicularly in the groove. Also, either the outer edge which is curved in the groove is stamped at the level and inside the notches, or, when the outer edge is made of tongues, only notches are formed at the tabs and the latter are then recessed in the notches. This latter mode of implementation then allows surplus, to lock in translation the outer edge relative to the inner edge in their longitudinal direction.
  • the inner wall has an extra thickness between said inner bearing edge and said opposite inner edge, and the latter are advantageously inclined relative to each other by an angle of between 5 and 15 °, for example 10 °.
  • said zone of application and said outer rim form a rounded whose radius of curvature is between 1, 6 and 2 mm, for example 1, 8 mm. In this way, the edge of the panel is devoid of stop that could be offensive and it has an aesthetic character.
  • the present invention provides a motor vehicle double wall outer wall crimping installation, said outer panel comprising a metal outer wall and an inner lining wall, said inner wall having an inner edge, an inner edge of a a support and an internal rim opposite to said inner bearing rim, said outer wall having an outer edge, an outer rim and an applicator zone which runs along said outer rim, said outer wall being adapted to cover said inner wall, in such a manner that said zone of application comes to bear against said internal bearing edge, said crimping installation comprising a controllable wheel tool for folding said outer edge against said opposite internal edge so as to crimp said internal edge between said applique zone and said outer rim; according to the invention said opposite inner edge has a groove which runs along said inner edge and said wheel tool further comprises a deformation finger for bending said outer edge in said groove so as to lock in translation said walls against one another; other.
  • the outer edge can be bent into the groove via the deformation finger, after the wheel has been applied. against the outer border.
  • the wheel tool is mounted for example on the arm of a robot, which robot can then be programmed to control the wheel tool, either in a work phase in which the wheel curls the outer edge or in another phase in which the deformation finger is applied against the outer edge to bend it.
  • said outer edge has cutouts along said outer edge so as to form tongues
  • said wheel tool is adapted to be controlled so that said deformation finger specifically bends said tongues in said groove.
  • FIG. 2 is a schematic view of another section of a double-walled outer panel already made
  • Figure 3 is a schematic view of said one section of the outer panel shown in Figure 1 being completed.
  • Figure 4 is a schematic view of said one section of the outer panel shown in Figure 3, completed.
  • FIG. 1 shows schematically a portion of a double wall outer panel 10, which outer panel is intended for motor vehicles to cushion the impact especially in case of pedestrian impact.
  • This outer panel 10 has a metal outer wall 12 and an inner wall 14 made of plastic which thus forms a lining.
  • the inner wall 14 has an inner edge 16, an inner bearing edge 18 and an opposite inner edge 20 located on the other face, and whose surfaces are inclined with respect to each other by an angle of About 10 °.
  • a groove 21 is formed in the opposite inner edge 20 at a distance from the inner edge 16.
  • the outer wall 12 has an outer edge 22, an outer rim 24 and an applicator zone 26 which runs along the outer rim 24 when the metal outer wall is not yet transformed and the outer edge 24 is still in the extension of the applied zone 26.
  • the outer wall 12 is preformed by making a rebate between the outer edge 24 and the application zone 26, then the inner edge 16 of the inner wall 14 is engaged in the rebate so that the inner bearing edge 18 precisely applies in the area of application 26.
  • an epoxy adhesive is applied between the zone of application 26 and the internal bearing edge 18.
  • the outer edge 24 is folded against the opposite internal edge 20 by means of a wheel tool 28 of a crimping installation, so that that the outer edge 22 comes to extend overhanging the groove 21 and also, forming an outer rounded portion 29 between the outer edge 24 and the area of application 26.
  • This rounding has a radius of curvature of 1.8 mm.
  • the wheel tool 28 is installed on the arm of a not shown robot of the crimping installation, which robot controls the movement of the arm.
  • the rotary tool 28 has a knob 30 which is driven in movement against the underside of the outer rim 24 to fold it against the opposite inner rim 20.
  • the ratchet 28 has the opposite of the rim. wheel 30, a deformation finger 32 whose function will be explained below.
  • the outer edge 22 is discontinuous and is then cut to reveal tabs which thus overhang the groove 21. Between two consecutive tongues, the outer edge 22 is cut along the outer edge 24.
  • FIG. 2 thus illustrates in section, a portion of the double-walled inner panel 10, between two consecutive tongues, and on which the outer rim 24 which has a free edge 34, is applied against the opposite inner edge 20, the free edge 34 along the groove 21.
  • the rotary tool 28 shown in FIG. 1 being driven in movement against the back of the outer rim 24, folds the outer rim 24 in the same manner and continuously against the inner rim opposite 20, when the outer edge 22 consists of tabs.
  • the free edge 34 thus runs along the groove 21 as illustrated in FIG. 2, and when the outer edge 24 has a tongue, the wheel 30 comes into use during its stroke also against the tongue to fold together the outer edge 24 and the tongue that extends.
  • the edge external 22 consists of the tongue is in a position similar to that which is illustrated in Figure 1.
  • the ratchet tool 28 will be controlled by the robot to turn over so as to implement the deformation finger 32.
  • the deformation finger 32 of the robot is precisely applied against the outer edge 22 constituted by a tongue, in order to complete the crimping of the inner edge 16 between the zone of application 26 and the external edge 24, by bending said tongue in the groove 21.
  • the inner edge 16 of the inner wall 14 is totally trapped between the outer edge 24 and the area of application 26. Also, with respect to a plane P defined by the joint plane of the internal bearing edge 18 and the application zone 26, the metal outer wall 12 and the inner wall 14 are locked in translation relative to each other both according to a component included in the plane P and according to a component perpendicular to this plane P. In addition, the outer edge 24 remains in abutment against the opposite inner edge 20 thanks to the outer edge 22 which is anchored in the groove 21, although the elasticity of the outer wall 12 tends to spread this external border 24.
  • the wheel tool controlled by the robot has two functions, one of which is to fold the outer edge 24 against the opposite inner edge 20 precisely thanks to the wheel 30, the other of bending the outer edge 22 with the deformation finger 32, in the groove 21.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Finishing Walls (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The invention relates to a crimping installation and to an exterior panel (10) of a motor vehicle that is produced using said installation. Said exterior panel comprises a metal outer skin (12) and an inner skin (14), said inner skin having an internal edge (16), an internal bearing border (18) and an opposite internal border (20), said outer skin (12) having an outer edge (22), an outer border (24) and a bearing zone (26), said bearing zone (26) coming to bear against said internal bearing border (18), said crimping installation comprising a knurling tool (28) that can be operated in such a way as to turn said outer border (24) over against said opposite internal border (20); according to the invention, said opposite internal border (20) has a groove (21) running alongside said internal edge (16) and said knurling tool (28) also comprises a deforming finger (32) for bending said external edge (22) into said groove (21).

Description

Panneau extérieur à double paroi de véhicule automobile Exterior double wall motor vehicle panel
La présente invention se rapporte à un panneau extérieur à double paroi de véhicule automobile, adapté à se déformer sous l'effet des impacts et notamment des chocs piéton.The present invention relates to an outer panel with a double wall of a motor vehicle, adapted to deform under the effect of impacts and in particular pedestrian impacts.
Des panneaux extérieurs à double paroi connus comprennent une paroi externe métallique et une paroi interne, par exemple en matière thermo dure ou thermoplastique, formant doublure. Ces deux parois sont alors assemblées par leur bord pour former le panneau. La paroi interne présente un bord interne et le long de ce bord interne, sur une face, une bordure interne d'appui et sur l'autre face une bordure interne opposée. Quant à la paroi externe, elle présente un bord externe et sur l'une de ses faces, une bordure externe longée par une zone d'applique. La paroi externe est alors adaptée à recouvrir la paroi interne de façon que la zone d'applique vienne s'appliquer contre la bordure interne d'appui, et la bordure externe est susceptible d'être rabattue contre la bordure interne opposée au moyen d'un outil à molette portée par exemple par le bras d'un robot commandable. De la sorte, le bord interne est serti entre la zone d'applique et la bordure externe.Known double-walled outer panels comprise a metal outer wall and an inner wall, for example made of thermoplastic or thermoplastic material, forming a lining. These two walls are then assembled by their edge to form the panel. The inner wall has an inner edge and along this inner edge, on one side, an inner bearing edge and on the other side an opposite inner edge. As for the outer wall, it has an outer edge and on one of its faces, an outer edge along a zone of applique. The outer wall is then adapted to cover the inner wall so that the applied area comes to bear against the internal bearing edge, and the outer edge is likely to be folded against the opposite inner edge by means of a wheel tool carried for example by the arm of a controllable robot. In this way, the inner edge is crimped between the applied area and the outer edge.
En outre, un adhésif, par exemple du type époxy, est généralement appliqué entre la zone d'applique et la bordure interne d'appui afin de parfaire la liaison des deux parois. On pourra notamment se référer au document JP 10 180 373, lequel décrit un tel panneau réalisé par l'assemblage de deux parois.In addition, an adhesive, for example of the epoxy type, is generally applied between the zone of application and the internal border of support in order to perfect the connection of the two walls. In particular, it will be possible to refer to document JP 10 180 373, which describes such a panel made by assembling two walls.
L'adhésif est bien destiné à parfaire la liaison entre les deux parois, cependant, après son application un certain temps est nécessaire pour qu'il durcisse et qu'il soit pleinement actif. Or, durant le sertissage à la molette du bord interne, la bordure externe vient comprimer l'adhésif entre la zone d'applique et la bordure interne d'appui, mais elle relâche légèrement la bordure interne après le passage de la molette à cause de l'élasticité du métal, sans pour autant que l'adhésif soit pleinement actif. Il ne le sera d'ailleurs généralement qu'après un passage au four. Par conséquent, la paroi interne est susceptible de glisser légèrement à l'intérieur de la paroi externe ou de s'en écarter sensiblement.The adhesive is well intended to perfect the bond between the two walls, however, after its application a certain time is necessary for it to harden and that it is fully active. However, during crimping with the wheel of the inner edge, the outer edge compresses the adhesive between the area of application and the internal border of support, but it slightly relaxes the internal border after the passage of the wheel because of the elasticity of the metal, without the adhesive being fully active. he will usually be after a baking. Therefore, the inner wall is likely to slide slightly inside the outer wall or to deviate substantially.
Aussi, un problème qui se pose et que vise à résoudre la présente invention est de fournir un panneau extérieur à double paroi, dont les deux parois demeurent en position fixe après le passage de la molette quand bien même l'adhésif ne serait pas encore complètement actif.Also, a problem that arises and that aims to solve the present invention is to provide a double-walled outer panel, the two walls remain in a fixed position after the passage of the wheel even though the adhesive is not yet completely active.
Dans le but de résoudre ce problème, et selon un premier aspect, la présente invention propose un panneau extérieur à double paroi de véhicule automobile, ledit panneau extérieur comprenant une paroi externe métallique et une paroi interne formant doublure, ladite paroi interne présentant un bord interne, une bordure interne d'appui et une bordure interne opposée à ladite bordure interne d'appui, ladite paroi externe présentant un bord externe, une bordure externe et une zone d'applique qui longe ladite bordure externe, ladite paroi externe étant adaptée à recouvrir ladite paroi interne, de manière à ce que ladite zone d'applique vienne s'appliquer contre ladite bordure interne d'appui, tandis que ladite bordure externe est adaptée à être rabattue contre ladite bordure interne opposée pour sertir ledit bord interne entre ladite zone d'applique et ladite bordure externe ; selon l'invention, ladite bordure interne opposée présente une rainure qui longe ledit bord interne et ledit bord externe est adapté à être recourbé dans ladite rainure pour bloquer en translation lesdites parois l'une contre l'autre.In order to solve this problem, and according to a first aspect, the present invention proposes a double wall outer wall of a motor vehicle, said outer panel comprising a metal outer wall and an inner lining wall, said inner wall having an inner edge. an internal support rim and an internal rim opposite to said inner bearing rim, said external wall having an outer edge, an outer rim and an applicator zone which runs along said outer rim, said outer wall being adapted to cover said inner wall, so that said applied area comes to bear against said inner bearing edge, while said outer edge is adapted to be folded against said opposite inner edge to crimp said inner edge between said inner zone; applies and said outer border; according to the invention, said opposite inner edge has a groove which runs along said inner edge and said outer edge is adapted to be bent in said groove to lock in translation said walls against each other.
Ainsi, une caractéristique de l'invention réside dans la mise en oeuvre d'une rainure dans la bordure interne opposée de manière à pouvoir y rabattre et y recourber le bord externe de la paroi externe. De la sorte, la bordure externe demeure en contact avec la bordure interne opposée, puisque le bord externe qui la prolonge est ancré dans la rainure, et aussi ladite zone d'applique est en contact avec la bordure interne d'appui. Par conséquent, le bord interne est maintenu serti entre la zone d'applique et le bord externe, même après le passage de la molette de sertissage, de telle sorte que l'adhésif qui n'est pas encore pleinement actif, pourra l'être ultérieurement sans que les parois ne se soient déplacées l'une par rapport à l'autre.Thus, a feature of the invention lies in the implementation of a groove in the opposite inner edge so as to fold down and bend the outer edge of the outer wall. In this way, the outer edge remains in contact with the opposite inner edge, since the outer edge which extends is anchored in the groove, and also said applied area is in contact with the inner bearing edge. Therefore, the inner edge is held crimped between the applique area and the outer edge, even after the crimping wheel has passed, so that the adhesive that is not yet fully active, can be later without the walls have moved relative to each other.
Selon un mode de mise en oeuvre de l'invention particulièrement avantageux, ledit bord externe présente des découpes le long de ladite bordure externe de façon à former des languettes espacées de proche en proche, lesdites languettes qui font alors saillie de la bordure externe sont seules adaptées à être recourbées dans ladite rainure. Ainsi, les languettes sont-elles adaptées à maintenir la bordure externe en appui contre la bordure interne même dans la zone de bordure externe située entre deux languettes consécutives.According to a particularly advantageous embodiment of the invention, said outer edge has cutouts along said outer edge so as to form tabs spaced step by step, said tabs which then protrude from the outer edge are alone adapted to be bent in said groove. Thus, the tabs are they adapted to maintain the outer edge bearing against the inner edge even in the outer edge area between two consecutive tongues.
Selon un autre mode de réalisation, ladite bordure interne opposée présente des encoches qui débouchent dans ladite rainure, et ledit bord externe est embouti dans ladite encoche. Ces encoches s'étendent sensiblement transversalement dans la bordure interne opposée et elles débouchent alors sensiblement perpendiculairement dans la rainure. Aussi, soit le bord externe qui est recourbé dans la rainure est embouti au niveau et à l'intérieur des encoches, soit, lorsque le bord externe est constitué de languettes, seules des encoches sont ménagées au niveau des languettes et ces dernières sont alors encastrées dans les encoches. Ce dernier mode de mise en oeuvre permet alors en surplus, de bloquer en translation la bordure externe par rapport à la bordure interne selon leur direction longitudinale.According to another embodiment, said opposite internal edge has notches which open into said groove, and said outer edge is stamped into said notch. These notches extend substantially transversely in the opposite inner edge and they then open substantially perpendicularly in the groove. Also, either the outer edge which is curved in the groove is stamped at the level and inside the notches, or, when the outer edge is made of tongues, only notches are formed at the tabs and the latter are then recessed in the notches. This latter mode of implementation then allows surplus, to lock in translation the outer edge relative to the inner edge in their longitudinal direction.
En outre, la paroi interne présente une surépaisseur entre ladite bordure interne d'appui et ladite bordure interne opposée, et ces dernières sont avantageusement inclinées l'une par rapport à l'autre d'un angle compris entre 5 et 15°, par exemple 10°. De plus, et selon une caractéristique particulière de mise en oeuvre, ladite zone d'applique et ladite bordure externe forment un arrondi dont le rayon de courbure est compris entre 1 ,6 et 2 mm, par exemple 1 ,8 mm. De la sorte, le bord du panneau est dépourvu d'arrêté qui pourrait être blessante et il présente un caractère esthétique. Selon un autre aspect, la présente invention propose une installation de sertissage de panneau extérieur à double paroi de véhicule automobile, ledit panneau extérieur comprenant une paroi externe métallique et une paroi interne formant doublure, ladite paroi interne présentant un bord interne, une bordure interne d'appui et une bordure interne opposée à ladite bordure interne d'appui, ladite paroi externe présentant un bord externe, une bordure externe et une zone d'applique qui longe ladite bordure externe, ladite paroi externe étant adaptée à recouvrir ladite paroi interne, de manière à ce que ladite zone d'applique vienne s'appliquer contre ladite bordure interne d'appui, ladite installation de sertissage comprenant un outil à molette commandable pour rabattre ladite bordure externe contre ladite bordure interne opposée de façon à sertir ledit bord interne entre ladite zone d'applique et ladite bordure externe ; selon l'invention ladite bordure interne opposée présente une rainure qui longe ledit bord interne et ledit outil à molette comprend en outre un doigt de déformation pour recourber ledit bord externe dans ladite rainure de façon à bloquer en translation lesdites parois l'une contre l'autre.In addition, the inner wall has an extra thickness between said inner bearing edge and said opposite inner edge, and the latter are advantageously inclined relative to each other by an angle of between 5 and 15 °, for example 10 °. In addition, and according to a particular embodiment of implementation, said zone of application and said outer rim form a rounded whose radius of curvature is between 1, 6 and 2 mm, for example 1, 8 mm. In this way, the edge of the panel is devoid of stop that could be offensive and it has an aesthetic character. According to another aspect, the present invention provides a motor vehicle double wall outer wall crimping installation, said outer panel comprising a metal outer wall and an inner lining wall, said inner wall having an inner edge, an inner edge of a a support and an internal rim opposite to said inner bearing rim, said outer wall having an outer edge, an outer rim and an applicator zone which runs along said outer rim, said outer wall being adapted to cover said inner wall, in such a manner that said zone of application comes to bear against said internal bearing edge, said crimping installation comprising a controllable wheel tool for folding said outer edge against said opposite internal edge so as to crimp said internal edge between said applique zone and said outer rim; according to the invention said opposite inner edge has a groove which runs along said inner edge and said wheel tool further comprises a deformation finger for bending said outer edge in said groove so as to lock in translation said walls against one another; other.
De la sorte, en équipant l'outil à molette d'un organe supplémentaire, un doigt de déformation, le bord externe est susceptible d'être recourbé dans la rainure par l'intermédiaire du doigt de déformation, après que la molette a été appliquée contre la bordure externe. L'outil à molette est monté par exemple sur le bras d'un robot, robot qui peut alors être programmé pour commander l'outil à molette, soit dans une phase de travail dans laquelle la molette recourbe la bordure externe soit dans une autre phase de travail dans laquelle le doigt de déformation est appliqué contre le bord externe pour le recourber.In this way, by equipping the rotary tool with an additional member, a deformation finger, the outer edge can be bent into the groove via the deformation finger, after the wheel has been applied. against the outer border. The wheel tool is mounted for example on the arm of a robot, which robot can then be programmed to control the wheel tool, either in a work phase in which the wheel curls the outer edge or in another phase in which the deformation finger is applied against the outer edge to bend it.
Selon un autre mode de réalisation, ledit bord externe présente des découpes le long de ladite bordure externe de façon à former des languettes, et ledit outil à molette est adapté à être commandé de façon que ledit doigt de déformation vienne spécifiquement recourber lesdites languettes dans ladite rainure. D'autres particularités et avantages de l'invention ressortiront à la lecture de la description faite ci-après d'un mode de réalisation particulier de l'invention, donné à titre indicatif mais non limitatif, en référence aux dessins annexés sur lesquels : - la Figure 1 est une vue schématique d'une section d'une portion d'un panneau extérieur à double paroi en cours de réalisation ;According to another embodiment, said outer edge has cutouts along said outer edge so as to form tongues, and said wheel tool is adapted to be controlled so that said deformation finger specifically bends said tongues in said groove. Other features and advantages of the invention will appear on reading the following description of a particular embodiment of the invention, given by way of indication but not limitation, with reference to the accompanying drawings in which: Figure 1 is a schematic view of a section of a portion of a double-walled outer panel in progress;
- la Figure 2 est une vue schématique d'une autre section d'un panneau extérieur à double paroi déjà réalisé ;- Figure 2 is a schematic view of another section of a double-walled outer panel already made;
- la Figure 3 est une vue schématique de ladite une section du panneau extérieur représenté sur la Figure 1 en cours de parachèvement ; etFigure 3 is a schematic view of said one section of the outer panel shown in Figure 1 being completed; and
- la Figure 4 est une vue schématique de ladite une section du panneau extérieur représenté sur la Figure 3, parachevé.- Figure 4 is a schematic view of said one section of the outer panel shown in Figure 3, completed.
La Figure 1 montre de manière schématique une portion d'un panneau extérieur à double paroi 10, lequel panneau extérieur est destiné aux véhicules automobiles pour amortir l'impact notamment en cas de choc piéton. Ce panneau extérieur 10 présente une paroi externe métallique 12 et une paroi interne 14 en matière plastique qui forme ainsi une doublure. La paroi interne 14 présente un bord interne 16, une bordure interne d'appui 18 et une bordure interne opposée 20 située sur l'autre face, et dont les surfaces sont inclinées l'une par rapport à l'autre d'un angle de 10° environ. En outre, une rainure 21 est ménagée dans la bordure interne opposée 20 à distance du bord interne 16. La paroi externe 12 présente un bord externe 22, une bordure externe 24 et une zone d'applique 26 qui longe la bordure externe 24 lorsque la paroi externe métallique n'est pas encore transformée et que la bordure externe 24 est encore dans le prolongement de la zone d'applique 26.Figure 1 shows schematically a portion of a double wall outer panel 10, which outer panel is intended for motor vehicles to cushion the impact especially in case of pedestrian impact. This outer panel 10 has a metal outer wall 12 and an inner wall 14 made of plastic which thus forms a lining. The inner wall 14 has an inner edge 16, an inner bearing edge 18 and an opposite inner edge 20 located on the other face, and whose surfaces are inclined with respect to each other by an angle of About 10 °. In addition, a groove 21 is formed in the opposite inner edge 20 at a distance from the inner edge 16. The outer wall 12 has an outer edge 22, an outer rim 24 and an applicator zone 26 which runs along the outer rim 24 when the metal outer wall is not yet transformed and the outer edge 24 is still in the extension of the applied zone 26.
Généralement, la paroi externe 12 est préformée en réalisant une feuillure entre la bordure externe 24 et la zone d'applique 26, puis le bord interne 16 de la paroi interne 14 est engagé dans la feuillure de façon que la bordure interne d'appui 18 s'applique précisément dans la zone d'applique 26. Éventuellement un adhésif du type époxy est appliqué entre la zone d'applique 26 et la bordure interne d'appui 18. Et ensuite, la bordure externe 24 est rabattue contre la bordure interne opposée 20 au moyen d'un outil à molette 28 d'une installation de sertissage, de manière à ce que le bord externe 22 vienne s'étendre en surplomb de la rainure 21 et aussi, en formant un arrondi externe 29 entre la bordure externe 24 et la zone d'applique 26. Cet arrondi présente un rayon de courbure de 1 ,8 mm.Generally, the outer wall 12 is preformed by making a rebate between the outer edge 24 and the application zone 26, then the inner edge 16 of the inner wall 14 is engaged in the rebate so that the inner bearing edge 18 precisely applies in the area of application 26. Optionally an epoxy adhesive is applied between the zone of application 26 and the internal bearing edge 18. And then, the outer edge 24 is folded against the opposite internal edge 20 by means of a wheel tool 28 of a crimping installation, so that that the outer edge 22 comes to extend overhanging the groove 21 and also, forming an outer rounded portion 29 between the outer edge 24 and the area of application 26. This rounding has a radius of curvature of 1.8 mm.
L'outil à molette 28 est installé sur le bras d'un robot non représenté de l'installation de sertissage, lequel robot commande le déplacement du bras. L'outil à molette 28 présente une molette 30 qui est entraînée en mouvement contre l'envers de la bordure externe 24 pour la rabattre contre la bordure interne opposée 20. Par ailleurs, l'outil à molette 28 présente à l'opposé de la molette 30, un doigt de déformation 32 dont on expliquera la fonction ci-après. Avantageusement, le bord externe 22 est discontinu et il est alors découpé pour faire apparaître des languettes qui surplombent ainsi la rainure 21 . Entre deux languettes consécutives, le bord externe 22 est découpé le long de la bordure externe 24.The wheel tool 28 is installed on the arm of a not shown robot of the crimping installation, which robot controls the movement of the arm. The rotary tool 28 has a knob 30 which is driven in movement against the underside of the outer rim 24 to fold it against the opposite inner rim 20. Furthermore, the ratchet 28 has the opposite of the rim. wheel 30, a deformation finger 32 whose function will be explained below. Advantageously, the outer edge 22 is discontinuous and is then cut to reveal tabs which thus overhang the groove 21. Between two consecutive tongues, the outer edge 22 is cut along the outer edge 24.
La Figure 2 illustre ainsi en section, une portion du panneau intérieur à double paroi 10, entre deux languettes consécutives, et sur laquelle la bordure externe 24 qui présente un bord libre 34, s'applique contre la bordure interne opposée 20, le bord libre 34 longeant la rainure 21. L'outil à molette 28 illustré sur la Figure 1 , étant entraîné en mouvement contre l'envers de la bordure externe 24, rabat la bordure externe 24 de la même façon et de manière continue, contre la bordure interne opposée 20, lorsque le bord externe 22 est constitué de languettes. Ainsi, lorsque la bordure externe 24 n'est pas prolongée par une languette, le bord libre 34 longe ainsi la rainure 21 comme illustré sur la Figure 2, et lorsque la bordure externe 24 présente une languette, la molette 30 vient s'appliquer durant sa course aussi contre la languette pour rabattre ensemble la bordure externe 24 et la languette qui la prolonge. À cet instant, le bord externe 22 constitué de la languette est dans une position analogue à celle qui est illustrée sur la Figure 1 .FIG. 2 thus illustrates in section, a portion of the double-walled inner panel 10, between two consecutive tongues, and on which the outer rim 24 which has a free edge 34, is applied against the opposite inner edge 20, the free edge 34 along the groove 21. The rotary tool 28 shown in FIG. 1, being driven in movement against the back of the outer rim 24, folds the outer rim 24 in the same manner and continuously against the inner rim opposite 20, when the outer edge 22 consists of tabs. Thus, when the outer edge 24 is not extended by a tongue, the free edge 34 thus runs along the groove 21 as illustrated in FIG. 2, and when the outer edge 24 has a tongue, the wheel 30 comes into use during its stroke also against the tongue to fold together the outer edge 24 and the tongue that extends. At this moment, the edge external 22 consists of the tongue is in a position similar to that which is illustrated in Figure 1.
Après que la bordure externe 24 a été rabattue contre la bordure interne opposée 20, l'outil à molette 28 va être commandé en retournement par l'intermédiaire du robot de manière à mettre en oeuvre le doigt de déformation 32. Ainsi, et tel que l'illustre la Figure 3, le doigt de déformation 32 du robot est précisément appliqué contre le bord externe 22 constitué d'une languette, afin de parachever le sertissage du bord interne 16 entre la zone d'applique 26 et la bordure externe 24, en recourbant à force ladite languette dans la rainure 21.After the outer rim 24 has been folded against the opposite inner edge 20, the ratchet tool 28 will be controlled by the robot to turn over so as to implement the deformation finger 32. Thus, and as 3 illustrates, the deformation finger 32 of the robot is precisely applied against the outer edge 22 constituted by a tongue, in order to complete the crimping of the inner edge 16 between the zone of application 26 and the external edge 24, by bending said tongue in the groove 21.
Ainsi que l'illustre la Figure 4, le bord interne 16 de la paroi interne 14 est totalement emprisonné entre la bordure externe 24 et la zone d'applique 26. Aussi, par rapport à un plan P défini par le plan de joint de la bordure interne d'appui 18 et la zone d'applique 26, la paroi externe métallique 12 et la paroi interne 14 sont bloquées en translation l'une par rapport à l'autre tant selon une composante incluse dans le plan P que selon une composante perpendiculaire à ce plan P. En outre, la bordure externe 24 demeure en appui contre la bordure interne opposée 20 grâce au bord externe 22 qui vient s'ancrer dans la rainure 21 , bien que l'élasticité de la paroi externe 12 tend à écarter cette bordure externe 24.As illustrated in Figure 4, the inner edge 16 of the inner wall 14 is totally trapped between the outer edge 24 and the area of application 26. Also, with respect to a plane P defined by the joint plane of the internal bearing edge 18 and the application zone 26, the metal outer wall 12 and the inner wall 14 are locked in translation relative to each other both according to a component included in the plane P and according to a component perpendicular to this plane P. In addition, the outer edge 24 remains in abutment against the opposite inner edge 20 thanks to the outer edge 22 which is anchored in the groove 21, although the elasticity of the outer wall 12 tends to spread this external border 24.
Par ailleurs, et de façon particulièrement avantageuse il est pratiqué des encoches dans la bordure interne opposée 20, perpendiculaires à la rainure 21 au droit des languettes du bord externe 22. Ces encoches non représentées et qui débouchent dans la rainure 21 , sont adaptées à recevoir à force les languettes qui viennent s'y encastrer de manière à mieux encore maintenir en appui la bordure externe 24 contre la bordure interne opposée 20. Les languettes du bord externe 22, sont entraînées à force dans les encoches et dans la rainure 21 par le doigt de déformation 32 de l'outil à molette 28. Ainsi, l'outil à molette commandée par le robot présente deux fonctions, l'une qui consiste à rabattre la bordure externe 24 contre la bordure interne opposée 20 précisément grâce à la molette 30, l'autre consistant à recourber le bord externe 22 à l'aide du doigt de déformation 32, dans la rainure 21. Furthermore, and particularly advantageously, there are notches in the opposite internal edge 20, perpendicular to the groove 21 at the tabs of the outer edge 22. These not shown notches and which open into the groove 21, are adapted to receive by force the tabs which are embedded therein so as to further support the outer edge 24 against the opposite inner edge 20. The tongues of the outer edge 22, are driven by force in the notches and in the groove 21 by the deformation finger 32 of the wheel tool 28. Thus, the wheel tool controlled by the robot has two functions, one of which is to fold the outer edge 24 against the opposite inner edge 20 precisely thanks to the wheel 30, the other of bending the outer edge 22 with the deformation finger 32, in the groove 21.

Claims

REVENDICATIONS
1. Panneau extérieur (10) à double paroi de véhicule automobile, ledit panneau extérieur comprenant une paroi externe métallique (12) et une paroi interne (14) formant doublure, ladite paroi interne présentant un bord interne (16), une bordure interne d'appui (18) et une bordure interne opposée (20) à ladite bordure interne d'appui, ladite paroi externe (12) présentant un bord externe (22), une bordure externe (24) et une zone d'applique (26) qui longe ladite bordure externe (24), ladite paroi externe (12) étant adaptée à recouvrir ladite paroi interne (14), de manière à ce que ladite zone d'applique (26) vienne s'appliquer contre ladite bordure interne d'appui (18), tandis que ladite bordure externe (24) est adaptée à être rabattue contre ladite bordure interne opposée (20) pour sertir ledit bord interne (16) entre ladite zone d'applique (26) et ladite bordure externe (24) ; caractérisé en ce que ladite bordure interne opposée (20) présente une rainure (21 ) qui longe ledit bord interne (16) et en ce que ledit bord externe (22) est adapté à être recourbé dans ladite rainure (21 ) pour bloquer en translation lesdites parois (12, 14) l'une contre l'autre.An outer panel (10) with a double wall of a motor vehicle, said outer panel comprising a metal outer wall (12) and an inner wall (14) forming a lining, said inner wall having an inner edge (16), an inner border of a support (18) and an opposite inner rim (20) to said inner bearing rim, said outer wall (12) having an outer edge (22), an outer rim (24) and a rim area (26) which runs along said outer edge (24), said outer wall (12) being adapted to cover said inner wall (14), so that said applied zone (26) comes to bear against said internal bearing edge (18), while said outer rim (24) is adapted to be folded against said opposite inner rim (20) to crimp said inner edge (16) between said rim area (26) and said outer rim (24); characterized in that said opposite inner edge (20) has a groove (21) which runs along said inner edge (16) and in that said outer edge (22) is adapted to be bent in said groove (21) to lock in translation said walls (12, 14) against each other.
2. Panneau extérieur selon la revendication 1 , caractérisé en ce que ledit bord externe (22) présente des découpes le long de ladite bordure externe (24) de façon à former des languettes, lesdites languettes étant adaptées à être recourbées dans ladite rainure (21 ). 2. An outer panel according to claim 1, characterized in that said outer edge (22) has cutouts along said outer edge (24) so as to form tabs, said tabs being adapted to be bent in said groove (21). ).
3. Panneau extérieur selon la revendication 1 , caractérisé en ce que ladite bordure interne opposée (20) présente des encoches qui débouchent dans ladite rainure (21 ), et en ce que ledit bord externe (22) est embouti dans ladite encoche.3. Outer panel according to claim 1, characterized in that said opposite inner edge (20) has notches which open into said groove (21), and in that said outer edge (22) is pressed into said notch.
4. Panneau extérieur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ladite bordure interne d'appui (18) et ladite bordure interne opposée (20) sont inclinées l'une par rapport à l'autre d'un angle compris entre 5 et 15°. 4. Outer panel according to any one of claims 1 to 3, characterized in that said inner bearing edge (18) and said opposite inner edge (20) are inclined relative to each other of a angle between 5 and 15 °.
5. Panneau extérieur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que ladite zone d'applique (26) et ladite bordure externe (24) forment un arrondi dont le rayon de courbure est compris entre 1 ,6 et 2 mm. 5. An outer panel according to any one of claims 1 to 4, characterized in that said area of application (26) and said outer edge (24) form a rounded whose radius of curvature is between 1, 6 and 2 mm.
6. Installation de sertissage de panneau extérieur (10) à double paroi de véhicule automobile, ledit panneau extérieur comprenant une paroi externe métallique (12) et une paroi interne (14) formant doublure, ladite paroi interne présentant un bord interne (16), une bordure interne d'appui (18) et une bordure interne opposée (20) à ladite bordure interne d'appui, ladite paroi externe (12) présentant un bord externe (22), une bordure externe (24) et une zone d'applique (26) qui longe ladite bordure externe (24), ladite paroi externe (12) étant adaptée à recouvrir ladite paroi interne (14), de manière à ce que ladite zone d'applique (26) vienne s'appliquer contre ladite bordure interne d'appui (18), ladite installation de sertissage comprenant un outil à molette (28) commandable pour rabattre ladite bordure externe (24) contre ladite bordure interne opposée (20) de façon à sertir ledit bord interne (16) entre ladite zone d'applique (26) et ladite bordure externe (24) ; caractérisé en ce que ladite bordure interne opposée (20) présente une rainure (21 ) qui longe ledit bord interne (16) et en ce que ledit outil à molette (28) comprend en outre un doigt de déformation (32) pour recourber ledit bord externe (22) dans ladite rainure (21 ) de façon à bloquer en translation lesdites parois (12, 14) l'une contre l'autre.A motor vehicle double wall outer wall crimping installation (10), said outer panel comprising a metal outer wall (12) and an inner liner wall (14), said inner wall having an inner edge (16), an inner bearing edge (18) and an opposite inner edge (20) to said inner bearing edge, said outer wall (12) having an outer edge (22), an outer edge (24) and an area of applique (26) which runs along said outer edge (24), said outer wall (12) being adapted to cover said inner wall (14), so that said applied zone (26) comes to bear against said border internal support member (18), said crimping apparatus comprising a controllable thumb tool (28) for folding said outer edge (24) against said opposite inner edge (20) to crimp said inner edge (16) between said area applique (26) and said outer rim (24); characterized in that said opposite inner edge (20) has a groove (21) which runs along said inner edge (16) and in that said thumb tool (28) further comprises a deforming finger (32) for bending said edge external (22) in said groove (21) so as to lock in translation said walls (12, 14) against each other.
7. Installation de sertissage de panneau selon la revendication 6, caractérisé en ce que ledit bord externe (22) présente des découpes le long de ladite bordure externe (24) de façon à former des languettes, et en ce que ledit outil à molette (28) est adapté à être commandé de façon que ledit doigt de déformation (32) vienne recourber lesdites languettes dans ladite rainure (21 ). A panel crimping installation according to claim 6, characterized in that said outer edge (22) has cutouts along said outer edge (24) so as to form tongues, and in that said thumb tool ( 28) is adapted to be controlled so that said deformation finger (32) comes bending said tongues in said groove (21).
PCT/FR2007/051511 2006-07-05 2007-06-25 Double-skinned exterior panel for a motor vehicle WO2008003885A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0606109A FR2903368B1 (en) 2006-07-05 2006-07-05 EXTERIOR PANEL WITH DOUBLE WALL OF MOTOR VEHICLE
FR0606109 2006-07-05

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WO2008003885A1 true WO2008003885A1 (en) 2008-01-10

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FR (1) FR2903368B1 (en)
WO (1) WO2008003885A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2216035A1 (en) * 1973-01-31 1974-08-30 Nissan Motor
DE19708369C1 (en) * 1997-03-01 1998-04-23 Webasto Karosseriesysteme Cover for sunroof of motor vehicle
JPH10180373A (en) 1996-12-20 1998-07-07 Mazda Motor Corp Roller type behemming method and device therefor
DE10116282A1 (en) * 2001-03-31 2002-10-02 Volkswagen Ag Vehicle bodywork component has stampings on inner skin edge region

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2216035A1 (en) * 1973-01-31 1974-08-30 Nissan Motor
JPH10180373A (en) 1996-12-20 1998-07-07 Mazda Motor Corp Roller type behemming method and device therefor
DE19708369C1 (en) * 1997-03-01 1998-04-23 Webasto Karosseriesysteme Cover for sunroof of motor vehicle
DE10116282A1 (en) * 2001-03-31 2002-10-02 Volkswagen Ag Vehicle bodywork component has stampings on inner skin edge region

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FR2903368B1 (en) 2008-09-26

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