WO2022200700A1 - Hybrid impact absorber having positioning means for pre-assembly thereof - Google Patents

Hybrid impact absorber having positioning means for pre-assembly thereof Download PDF

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Publication number
WO2022200700A1
WO2022200700A1 PCT/FR2022/050242 FR2022050242W WO2022200700A1 WO 2022200700 A1 WO2022200700 A1 WO 2022200700A1 FR 2022050242 W FR2022050242 W FR 2022050242W WO 2022200700 A1 WO2022200700 A1 WO 2022200700A1
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WO
WIPO (PCT)
Prior art keywords
absorber
positioning means
designed
fixing
structural element
Prior art date
Application number
PCT/FR2022/050242
Other languages
French (fr)
Inventor
Guillaume Royer
Rodolphe Peron
Thibault Gourvennec
Original Assignee
Psa Automobiles Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Psa Automobiles Sa filed Critical Psa Automobiles Sa
Priority to EP22707810.2A priority Critical patent/EP4313689A1/en
Publication of WO2022200700A1 publication Critical patent/WO2022200700A1/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
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type

Definitions

  • Hybrid shock absorber having positioning means for its pre-assembly
  • shock absorbers for motor vehicles in particular hybrid shock absorbers, made of metal and plastic material, as well as vehicles fitted with such absorbers.
  • repairability shocks i.e. shocks suffered at low speeds of the order of 15 to 20 kilometers per hour.
  • the behavior of motor vehicles in these three situations is regulated and tested by implementing standardized test procedures. The requirements in terms of the results of these tests are always more numerous and more difficult to meet and force car manufacturers to constantly innovate.
  • shock absorption systems which as a rule comprise a bumper beam connected to the vehicle chassis by means of absorption boxes arranged between the beam of bumpers and a side member and designed to deform during an impact, typically by undergoing compression so as to allow the approximation of the bumper beam towards the side members.
  • the bumper beam and the absorption boxes are made of steel or aluminum.
  • Automobile manufacturers know very well how to model the deformations of these metallic shock absorption systems.
  • these absorption systems have defects such as excessive mass for steel elements or their cost for aluminum elements.
  • absorption boxes made of plastic material they present risks of breakage during an impact, therefore no longer performing their function of maintaining the bumper beam, or even risk undergoing uncontrolled deformations unacceptable for most regulations, such as those known from document FR3047950. Due to their drawbacks, hybrid absorbers are still little used.
  • the usual masses of the absorption boxes and of the beam are such that the assembly of the absorption systems, in particular following a shock repairability in a garage not equipped with robots to handle the parts to be assembled, can be prove laborious and dangerous for operators in the event of a fall, before or during their assembly.
  • an object of the present invention is to overcome the problems set out above.
  • an object of the present invention is to provide a shock absorber making it possible to manufacture a hybrid shock-absorbing device, that is to say comprising plastic material elements whose mass is reduced compared to to a classic system, whose manufacturing costs are controlled and facilitate their assembly.
  • the present invention relates to a shock absorber, for a motor vehicle, comprising a deformation casing made at least in part of plastic material and designed to absorb by deforming at least part of the energy of a shock transmitted to the absorber, the housing being designed to be fixed by one end to a bumper crossmember and by another end to a structural element of the vehicle chassis, at least one of the ends comprising a fixing interface allowing the fixing of the absorber on a fixing zone arranged on the structural element and/or the crosspiece, the absorber being characterized in that it comprises means of positioning, resulting from material with the deformation box, designed to cooperate with the structural element and/or the crosspiece so as to position and maintain the attachment interface opposite the attachment zone.
  • the invention also relates to a vehicle comprising at least one shock absorber according to the invention.
  • the shock absorber according to the invention has reduced mass and manufacturing costs thanks to the use of plastic material, in particular to manufacture the deformation box.
  • the shock absorber according to the invention can be positioned on a structural element of a chassis of a vehicle thanks to the positioning means: thus the fixing interface is easily positioned and is held by said positioning means, facing of the fixation area, awaiting further fixation. There is then no need to attach the shock absorber to keep it in position.
  • the positioning means comprise at least one positioning pin.
  • the positioning means are made of plastic material.
  • the fixing interface is an absorber plate comprising a passage orifice allowing the positioning means to pass through the absorber plate.
  • Figure 1 shows a perspective view from below of a shock absorber according to the invention, fixed to a bumper cross member;
  • FIG. 2 shows the absorber of FIG. 1 according to a perspective and top view as well as the fixing zone provided on a chassis element of a vehicle according to the invention.
  • a shock absorber 1 according to the invention is intended to equip a front face of a motor vehicle in order to secure a bumper crossmember 2, illustrated in FIGS. 1 and 2, to the vehicle so that it meets regulatory safety requirements.
  • the absorber 1 comprises a deformation casing 3 made at least partly of plastic material.
  • the deformation casing 3 is designed to absorb, by deforming, at least part of the energy of an impact transmitted to the absorber 1.
  • the casing 3 is designed to be fixed by one end 4 to the crosspiece 2 of bumper and by another end 5 to a structural element 6 of the vehicle frame, illustrated in FIG. 2, such as a cradle 7.
  • At least one 5 of the ends 4, 5 comprises a fixing interface 8 which allows the fixing of the absorber 1 on a fixing zone 9 provided on the structural element 6, such as a cradle plate 10 illustrated in the figure 2.
  • the fixing interface 8 is for example an absorber plate 11, metallic, having a plurality of orifices 12 positioned to be brought, during the assembly of the absorber 1, facing holes 13 for fixing corresponding, formed on the cradle plate 10.
  • the orifices 12 and the fixing holes 13 obviously allow the attachment of the cradle plate 10 and the absorber plate 11, for example by means of nuts.
  • the absorber 1 further comprises positioning means 14, integral with the deformation housing 3, designed to cooperate with the structural element 6, in particular the cradle plate 10, so as to make it possible to position and maintain the fixing interface 8 opposite the fixing zone 9.
  • the positioning means 14 integral with the deformation housing 3, designed to cooperate with the structural element 6, in particular the cradle plate 10, so as to make it possible to position and maintain the fixing interface 8 opposite the fixing zone 9.
  • the 14 comprise at least one positioning pin 15, integral with the deformation housing 3, illustrated in the figures.
  • the pin 15 is made of plastic material and protrudes from the fixing interface 8.
  • the absorber plate 11 comprises a passage orifice 16 which allows the passage of the positioning means 14, in this case the pin 15, through the absorber plate 11.
  • the cradle plate 10 includes an indexing hole 17 which allows the introduction of the pin 15, their respective positions making it possible to position and maintain the fixing interface 8 opposite the fixing zone 9. In order to prevent the pawn
  • the pin 15 advantageously comprises a groove 18, illustrated in Figure 1 and provided on the circumference of the pin 15, capable of cooperating with the periphery of the indexing hole 17.
  • the shock absorber 1 according to the invention has the advantages of a hybrid absorber made at least in part from plastic material, namely reduced mass and reduced manufacturing costs.
  • the positioning means 14, in particular the pin 15 make it possible to facilitate the assembly of the absorber 1 on the structural element 6 of the vehicle chassis, without requiring its immediate attachment.

Abstract

The invention relates to an impact absorber (1) comprising a deformation box (3) made at least in part of plastic and designed to absorb at least some of the energy of an impact, the box (3) being designed to be fastened by one end (4) to a bumper crossmember (2) and by another end (5) to a chassis structural element (6), at least one (5) of the ends (4, 5) comprising a fastening interface (8) for fastening the absorber (2) on a fastening zone (9) formed on the structural element (6) and/or the crossmember (2). The absorber (1) comprises positioning means (14) designed to cooperate with the structural element (6) and/or the crossmember (2) in such a way that the fastening interface (8) can be positioned and maintained facing the fastening zone (9).

Description

DESCRIPTION DESCRIPTION
Titre de l’invention : Absorbeur de chocs hybride présentant des moyens de positionnement pour son pré-montage Title of the invention: Hybrid shock absorber having positioning means for its pre-assembly
La présente invention revendique la priorité de la demande française 2102890 déposée le 23 mars 2021 , dont le contenu (texte, dessins et revendications) est ici incorporé par référence. The present invention claims the priority of French application 2102890 filed on March 23, 2021, the content of which (text, drawings and claims) is incorporated herein by reference.
Le domaine technique concerne les absorbeurs de chocs pour véhicule automobile, notamment les absorbeurs de chocs hybrides, réalisés en métal et en matière plastique ainsi que les véhicules équipés de tels absorbeurs. The technical field concerns shock absorbers for motor vehicles, in particular hybrid shock absorbers, made of metal and plastic material, as well as vehicles fitted with such absorbers.
En matière de sécurité routière, les constructeurs d’automobiles doivent prendre en compte de multiples préoccupations et réglementations lors du développement de nouveaux véhicules. Ainsi, les constructeurs d’automobiles doivent assurer la sécurité des passagers du véhicule en cas de collision mais également protéger les autres usagers de la route les plus vulnérables tels que les piétons. Enfin, il convient de chercher à maîtriser les coûts de réparations des véhicules lorsqu’ils subissent des chocs urbains, dénommés chocs réparabilité, c’est-à-dire des chocs subis à de faibles vitesses de l’ordre de 15 à 20 kilomètres par heure. Le comportement des véhicules automobiles dans ces trois situations est réglementé et testé en mettant en œuvre des procédures de tests normalisées. Les exigences en termes de résultats à ces tests sont toujours plus nombreuses et plus difficiles à satisfaire et obligent les constructeurs d’automobiles à innover constamment. When it comes to road safety, automakers need to consider multiple concerns and regulations when developing new vehicles. Thus, car manufacturers must ensure the safety of vehicle passengers in the event of a collision but also protect the other most vulnerable road users such as pedestrians. Finally, efforts should be made to control vehicle repair costs when they suffer urban shocks, called repairability shocks, i.e. shocks suffered at low speeds of the order of 15 to 20 kilometers per hour. The behavior of motor vehicles in these three situations is regulated and tested by implementing standardized test procedures. The requirements in terms of the results of these tests are always more numerous and more difficult to meet and force car manufacturers to constantly innovate.
Pour répondre aux exigences mentionnées précédemment, les constructeurs de véhicules automobiles ont ainsi développé des systèmes d’absorption de chocs, qui en règle générale comportent une poutre de pare-chocs reliée au châssis du véhicule au moyens de caissons d’absorption disposés entre la poutre de pare- chocs et un longeron et conçus pour se déformer lors d’un choc, typiquement en subissant une compression de sorte à permettre le rapprochement de la poutre de pare-chocs vers les longerons. Habituellement, la poutre de pare-chocs et les caissons d’absorption sont fabriqués en acier ou en aluminium. Les constructeurs d’automobiles savent très bien modéliser les déformations de ces systèmes d’absorption de chocs métalliques. Cependant, ces systèmes d’absorption présentent des défauts tels qu’une masse excessive pour les éléments en acier ou leur coût pour les éléments en aluminium. Quelques systèmes d’absorption de chocs non conventionnels, en matériau composite, sont connus mais présentent également des défauts majeurs : une poutre réalisée en matériau composite doit être réservée à des véhicules de faible masse, car une telle poutre présente une capacité d’absorption d’énergie d’un choc réduite par rapport à une poutre métallique. Quant aux caissons d’absorption réalisés en matériau plastique, ils présentent des risques de casse lors d’un choc, n’assurant dès lors plus leur fonction de maintien de la poutre de pare-chocs, ou encore risquent de subir des déformations non contrôlées inacceptables pour la plupart des réglementations, tels que ceux connus du document FR3047950. De par leurs inconvénients, les absorbeurs hybrides sont encore peu utilisés. To meet the requirements mentioned above, motor vehicle manufacturers have thus developed shock absorption systems, which as a rule comprise a bumper beam connected to the vehicle chassis by means of absorption boxes arranged between the beam of bumpers and a side member and designed to deform during an impact, typically by undergoing compression so as to allow the approximation of the bumper beam towards the side members. Usually, the bumper beam and the absorption boxes are made of steel or aluminum. Automobile manufacturers know very well how to model the deformations of these metallic shock absorption systems. However, these absorption systems have defects such as excessive mass for steel elements or their cost for aluminum elements. A few unconventional shock absorption systems, made of composite material, are known but also have major flaws: a beam made of composite material must be reserved for low-mass vehicles, because such a beam has a capacity to absorb energy of a reduced impact compared to a metal beam. As for the absorption boxes made of plastic material, they present risks of breakage during an impact, therefore no longer performing their function of maintaining the bumper beam, or even risk undergoing uncontrolled deformations unacceptable for most regulations, such as those known from document FR3047950. Due to their drawbacks, hybrid absorbers are still little used.
Par ailleurs, les masses habituelles des caissons d’absorption et de la poutre sont telles que l’assemblage des systèmes d’absorption, notamment suite à un choc réparabilité dans un garage non équipé de robots pour manipuler les pièces à assembler, peut s’avérer laborieux et dangereux pour les opérateurs en cas de chute, avant ou pendant leur assemblage. Furthermore, the usual masses of the absorption boxes and of the beam are such that the assembly of the absorption systems, in particular following a shock repairability in a garage not equipped with robots to handle the parts to be assembled, can be prove laborious and dangerous for operators in the event of a fall, before or during their assembly.
Ainsi, il existe un besoin de nouveaux absorbeurs de chocs présentant une masse et des coûts de fabrication réduits tout en présentant un assemblage sur le véhicule facilité. Thus, there is a need for new shock absorbers having reduced mass and manufacturing costs while having easier assembly on the vehicle.
La présente invention a pour objet de pallier les problèmes exposés précédemment. Dans ce contexte technique, un but de la présente invention est de fournir un absorbeur de chocs permettant de fabriquer un dispositif d’absorption de chocs hybride, c’est-à-dire comportant des éléments en matière plastique dont la masse est réduite par rapport à un système classique, dont les coûts de fabrication sont maîtrisés et facilitant leur assemblage. The object of the present invention is to overcome the problems set out above. In this technical context, an object of the present invention is to provide a shock absorber making it possible to manufacture a hybrid shock-absorbing device, that is to say comprising plastic material elements whose mass is reduced compared to to a classic system, whose manufacturing costs are controlled and facilitate their assembly.
A cet effet, la présente invention se rapporte à un absorbeur de chocs, pour véhicule automobile, comportant un boîtier de déformation réalisé au moins en partie en matière plastique et conçu pour absorber en se déformant au moins une partie de l’énergie d’un choc transmise à l’absorbeur, le boîtier étant conçu pour être fixé par une extrémité à une traverse de pare-chocs et par une autre extrémité à un élément structurel de châssis du véhicule, au moins une des extrémités comportant une interface de fixation permettant la fixation de l’absorbeur sur une zone de fixation ménagée sur l’élément structurel et/ou la traverse, l’absorbeur étant caractérisé en ce qu’il comporte des moyens de positionnement, venant de matière avec le boîtier de déformation, conçus pour coopérer avec l’élément structurel et/ou la traverse de sorte à positionner et maintenir l’interface de fixation en regard de la zone de fixation. To this end, the present invention relates to a shock absorber, for a motor vehicle, comprising a deformation casing made at least in part of plastic material and designed to absorb by deforming at least part of the energy of a shock transmitted to the absorber, the housing being designed to be fixed by one end to a bumper crossmember and by another end to a structural element of the vehicle chassis, at least one of the ends comprising a fixing interface allowing the fixing of the absorber on a fixing zone arranged on the structural element and/or the crosspiece, the absorber being characterized in that it comprises means of positioning, resulting from material with the deformation box, designed to cooperate with the structural element and/or the crosspiece so as to position and maintain the attachment interface opposite the attachment zone.
L’invention concerne également un véhicule comportant au moins un absorbeur de chocs selon l’invention. The invention also relates to a vehicle comprising at least one shock absorber according to the invention.
Ainsi, l’absorbeur de choc selon l’invention présente une masse et des coûts de fabrication réduits grâce à l’emploi de matière plastique, notamment pour fabriquer le boîtier de déformation. L’absorbeur de chocs selon l’invention peut être positionné sur un élément structurel d’un châssis d’un véhicule grâce aux moyens de positionnement : ainsi l’interface de fixation est positionnée facilement et est maintenue par lesdits moyens de positionnement, en regard de la zone de fixation, en attente d’une fixation ultérieure. Il est alors inutile de fixer l’absorbeur de chocs pour le maintenir en position. Thus, the shock absorber according to the invention has reduced mass and manufacturing costs thanks to the use of plastic material, in particular to manufacture the deformation box. The shock absorber according to the invention can be positioned on a structural element of a chassis of a vehicle thanks to the positioning means: thus the fixing interface is easily positioned and is held by said positioning means, facing of the fixation area, awaiting further fixation. There is then no need to attach the shock absorber to keep it in position.
Selon un mode de réalisation de l’invention, les moyens de positionnement comportent au moins un pion de positionnement. According to one embodiment of the invention, the positioning means comprise at least one positioning pin.
Avantageusement, les moyens de positionnement sont réalisés en matière plastique. Advantageously, the positioning means are made of plastic material.
Selon une possibilité, l’interface de fixation est une platine d’absorbeur comportant un orifice de passage permettant le passage des moyens de positionnement au travers de la platine d’absorbeur. According to one possibility, the fixing interface is an absorber plate comprising a passage orifice allowing the positioning means to pass through the absorber plate.
L’invention sera mieux comprise à la lecture de la description détaillée qui va suivre, donnée uniquement à titre d’exemple non limitatif et faite en se référant aux dessins annexés sur lesquels : The invention will be better understood on reading the detailed description which follows, given solely by way of non-limiting example and made with reference to the appended drawings in which:
[Fig. 1 ] la figure 1 , représente une vue en perspective et de dessous d’un absorbeur de chocs selon l’invention, fixé à une traverse de pare-chocs; [Fig. 1] Figure 1 shows a perspective view from below of a shock absorber according to the invention, fixed to a bumper cross member;
[Fig. 2] la figure 2, représente l’absorbeur de la figure 1 selon une vue en perspective et de dessus ainsi que la zone de fixation ménagée sur un élément de châssis d’un véhicule selon l’invention. [Fig. 2] FIG. 2 shows the absorber of FIG. 1 according to a perspective and top view as well as the fixing zone provided on a chassis element of a vehicle according to the invention.
Dans ces figures, les mêmes références sont utilisées pour désigner les mêmes éléments. In these figures, the same references are used to designate the same elements.
Un absorbeur 1 de chocs selon l’invention, illustré sur les figures 1 et 2, est destiné à équiper une face avant d’un véhicule automobile afin de solidariser une traverse 2 de pare-chocs, illustrée sur les figures 1 et 2, au véhicule afin que ce dernier réponde aux exigences réglementaires de sécurité. L’absorbeur 1 comporte un boîtier 3 de déformation réalisé au moins en partie en matière plastique. Le boîtier 3 de déformation est conçu pour absorber, en se déformant, au moins une partie de l’énergie d’un choc transmise à l’absorbeur 1. Le boîtier 3 est conçu pour être fixé par une extrémité 4 à la traverse 2 de pare- chocs et par une autre extrémité 5 à un élément structurel 6 de châssis du véhicule, illustré sur la figure 2, tel qu’un berceau 7. A shock absorber 1 according to the invention, illustrated in FIGS. 1 and 2, is intended to equip a front face of a motor vehicle in order to secure a bumper crossmember 2, illustrated in FIGS. 1 and 2, to the vehicle so that it meets regulatory safety requirements. The absorber 1 comprises a deformation casing 3 made at least partly of plastic material. The deformation casing 3 is designed to absorb, by deforming, at least part of the energy of an impact transmitted to the absorber 1. The casing 3 is designed to be fixed by one end 4 to the crosspiece 2 of bumper and by another end 5 to a structural element 6 of the vehicle frame, illustrated in FIG. 2, such as a cradle 7.
Au moins une 5 des extrémités 4, 5 comporte une interface de fixation 8 qui permet la fixation de l’absorbeur 1 sur une zone de fixation 9 ménagée sur l’élément structurel 6, telle qu’une platine de berceau 10 illustrée sur la figure 2. L’interface de fixation 8 est par exemple une platine d’absorbeur 11 , métallique, présentant une pluralité d’orifices 12 positionnés pour être amenés, lors de l’assemblage de l’absorbeur 1 , en regard de trous 13 de fixation correspondants, ménagés sur la platine de berceau 10. Les orifices 12 et les trous 13 de fixations permettent évidemment la solidarisation de la platine de berceau 10 et de la platine d’absorbeur 11 , par exemple à l’aide d’écrous. At least one 5 of the ends 4, 5 comprises a fixing interface 8 which allows the fixing of the absorber 1 on a fixing zone 9 provided on the structural element 6, such as a cradle plate 10 illustrated in the figure 2. The fixing interface 8 is for example an absorber plate 11, metallic, having a plurality of orifices 12 positioned to be brought, during the assembly of the absorber 1, facing holes 13 for fixing corresponding, formed on the cradle plate 10. The orifices 12 and the fixing holes 13 obviously allow the attachment of the cradle plate 10 and the absorber plate 11, for example by means of nuts.
L’absorbeur 1 comporte en outre des moyens de positionnement 14, venant de matière avec le boîtier 3 de déformation, conçus pour coopérer avec l’élément structurel 6, notamment la platine de berceau 10, de sorte à permettre de positionner et maintenir l’interface 8 de fixation en regard de la zone de fixation 9. Dans le mode de réalisation illustré sur les figures, les moyens de positionnementThe absorber 1 further comprises positioning means 14, integral with the deformation housing 3, designed to cooperate with the structural element 6, in particular the cradle plate 10, so as to make it possible to position and maintain the fixing interface 8 opposite the fixing zone 9. In the embodiment illustrated in the figures, the positioning means
14 comportent au moins un pion 15 de positionnement, venant de matière avec le boîtier 3 de déformation, illustré sur les figures. Le pion 15 est réalisé en matière plastique et fait saillie de l’interface de fixation 8. A cette fin, la platine d’absorbeur 11 comporte un orifice de passage 16 qui permet le passage des moyens de positionnement 14, en l’occurrence le pion 15, au travers de la platine d’absorbeur 11. 14 comprise at least one positioning pin 15, integral with the deformation housing 3, illustrated in the figures. The pin 15 is made of plastic material and protrudes from the fixing interface 8. To this end, the absorber plate 11 comprises a passage orifice 16 which allows the passage of the positioning means 14, in this case the pin 15, through the absorber plate 11.
La platine de berceau 10 comporte un trou d’indexage 17 qui permet l’introduction du pion 15, leurs positions respectives permettant de positionner et de maintenir l’interface 8 de fixation en regard de la zone de fixation 9. Afin d’éviter que le pionThe cradle plate 10 includes an indexing hole 17 which allows the introduction of the pin 15, their respective positions making it possible to position and maintain the fixing interface 8 opposite the fixing zone 9. In order to prevent the pawn
15 de positionnement ne sorte du trou d’indexage 17 sans sollicitation, le pion 15 comporte avantageusement une rainure 18, illustrée sur la figure 1 et ménagée sur la circonférence du pion 15, capable de coopérer avec le pourtour du trou d’indexage 17. Ainsi, l’absorbeur 1 de chocs selon l’invention présente les avantages d’un absorbeur hybride fabriqué au moins en partie en matière plastique, à savoir une masse et des coûts de fabrication réduits. Les moyens de positionnement 14, en particuliers le pion 15 permettent de faciliter l’assemblage de l’absorbeur 1 sur l’élément structurel 6 de châssis du véhicule, sans nécessiter sa fixation immédiate. 15 positioning does not come out of the indexing hole 17 without stress, the pin 15 advantageously comprises a groove 18, illustrated in Figure 1 and provided on the circumference of the pin 15, capable of cooperating with the periphery of the indexing hole 17. Thus, the shock absorber 1 according to the invention has the advantages of a hybrid absorber made at least in part from plastic material, namely reduced mass and reduced manufacturing costs. The positioning means 14, in particular the pin 15 make it possible to facilitate the assembly of the absorber 1 on the structural element 6 of the vehicle chassis, without requiring its immediate attachment.
L’invention ne se limite pas au mode de réalisation de l’absorbeur de chocs décrit ci-avant, seulement à titre d’exemple, mais d’autres modes de réalisation peuvent être conçus par l’homme de métier sans sortir du cadre et de la portée de la présente invention. The invention is not limited to the embodiment of the shock absorber described above, solely by way of example, but other embodiments can be designed by those skilled in the art without departing from the scope and within the scope of the present invention.

Claims

REVENDICATIONS
1. Absorbeur (1 ) de chocs, pour véhicule automobile, comportant un boîtier (3) de déformation réalisé au moins en partie en matière plastique et conçu pour absorber en se déformant au moins une partie de l’énergie d’un choc transmise à l’absorbeur (1), le boîtier (3) étant conçu pour être fixé par une extrémité (4) à une traverse (2) de pare-chocs et par une autre extrémité (5) à un élément structurel (6) de châssis du véhicule, au moins une (5) des extrémités (4, 5) comportant une interface de fixation (8) permettant la fixation de l’absorbeur (1) sur une zone de fixation (9) ménagée sur l’élément structurel (6) et/ou la traverse (2), l’absorbeur (1) étant caractérisé en ce qu’il comporte des moyens de positionnement (14), venant de matière avec le boîtier (3) de déformation, conçus pour coopérer avec l’élément structurel (6) et/ou la traverse (2) de sorte à positionner et maintenir l’interface de fixation (8) en regard de la zone de fixation (9). 1. Shock absorber (1) for a motor vehicle, comprising a deformation housing (3) made at least in part of plastic material and designed to absorb by deforming at least part of the energy of an impact transmitted to the absorber (1), the casing (3) being designed to be fixed at one end (4) to a bumper cross member (2) and at another end (5) to a frame structural element (6) of the vehicle, at least one (5) of the ends (4, 5) comprising a fixing interface (8) allowing the fixing of the absorber (1) on a fixing zone (9) provided on the structural element (6 ) and/or the crosspiece (2), the absorber (1) being characterized in that it comprises positioning means (14), integral with the deformation housing (3), designed to cooperate with the structural element (6) and/or the crosspiece (2) so as to position and hold the fixing interface (8) facing the fixing zone (9).
2. Absorbeur (1) selon la revendication 1 , caractérisé en ce que les moyens de positionnement (14) comportent au moins un pion (15) de positionnement. 2. Absorber (1) according to claim 1, characterized in that the positioning means (14) comprise at least one pin (15) for positioning.
3. Absorbeur (1) selon la revendication 1 ou 2, caractérisé en ce que les moyens de positionnement (14) sont réalisés en matière plastique. 3. Absorber (1) according to claim 1 or 2, characterized in that the positioning means (14) are made of plastic.
4. Absorbeur (1) selon l’une des revendications 1 à 3, caractérisé en ce que l’interface de fixation (8) est une platine d’absorbeur (11) comportant un orifice de passage (16) permettant le passage des moyens de positionnement (14) au travers de la platine d’absorbeur (11 ). 4. Absorber (1) according to one of claims 1 to 3, characterized in that the fixing interface (8) is an absorber plate (11) comprising a passage orifice (16) allowing the passage of means positioning (14) through the absorber plate (11).
5. Véhicule comportant au moins un absorbeur (1) de chocs selon l’une des revendications 1 à 4. 5. Vehicle comprising at least one shock absorber (1) according to one of claims 1 to 4.
PCT/FR2022/050242 2021-03-23 2022-02-10 Hybrid impact absorber having positioning means for pre-assembly thereof WO2022200700A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22707810.2A EP4313689A1 (en) 2021-03-23 2022-02-10 Hybrid impact absorber having positioning means for pre-assembly thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2102890A FR3121092A1 (en) 2021-03-23 2021-03-23 Hybrid shock absorber having positioning means for its pre-assembly.
FRFR2102890 2021-03-23

Publications (1)

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WO2022200700A1 true WO2022200700A1 (en) 2022-09-29

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EP (1) EP4313689A1 (en)
FR (1) FR3121092A1 (en)
WO (1) WO2022200700A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2102890A6 (en) 1970-08-27 1972-04-07 Gueytron Jean Claude
EP1038733A2 (en) * 1999-03-26 2000-09-27 Draftex Industries Limited Energy absorbing arrangements
EP1197398A2 (en) * 2000-10-18 2002-04-17 Adlev S.r.l. Impact energy absorption system for vehicles
US20160159303A1 (en) * 2014-06-03 2016-06-09 Hyundai Motor Company Crash box for vehicle
FR3047950A3 (en) 2016-12-23 2017-08-25 Plastic Omnium Cie IMPACT ABSORBER FOR VEHICLE AND SHOCK BEAM COMPRISING THIS SHOCK ABSORBER

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2102890A6 (en) 1970-08-27 1972-04-07 Gueytron Jean Claude
EP1038733A2 (en) * 1999-03-26 2000-09-27 Draftex Industries Limited Energy absorbing arrangements
EP1197398A2 (en) * 2000-10-18 2002-04-17 Adlev S.r.l. Impact energy absorption system for vehicles
US20160159303A1 (en) * 2014-06-03 2016-06-09 Hyundai Motor Company Crash box for vehicle
FR3047950A3 (en) 2016-12-23 2017-08-25 Plastic Omnium Cie IMPACT ABSORBER FOR VEHICLE AND SHOCK BEAM COMPRISING THIS SHOCK ABSORBER

Also Published As

Publication number Publication date
EP4313689A1 (en) 2024-02-07
FR3121092A1 (en) 2022-09-30

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