FR2749263A1 - Reinforced structure element for automobiles - Google Patents

Reinforced structure element for automobiles Download PDF

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Publication number
FR2749263A1
FR2749263A1 FR9606714A FR9606714A FR2749263A1 FR 2749263 A1 FR2749263 A1 FR 2749263A1 FR 9606714 A FR9606714 A FR 9606714A FR 9606714 A FR9606714 A FR 9606714A FR 2749263 A1 FR2749263 A1 FR 2749263A1
Authority
FR
France
Prior art keywords
foam
filled
chamber
inner walls
hollow body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR9606714A
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French (fr)
Other versions
FR2749263B1 (en
Inventor
Francois Roussel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
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 SAS filed Critical Renault SAS
Priority to FR9606714A priority Critical patent/FR2749263B1/en
Publication of FR2749263A1 publication Critical patent/FR2749263A1/en
Application granted granted Critical
Publication of FR2749263B1 publication Critical patent/FR2749263B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
    • B62D29/002—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material a foamable synthetic material or metal being added in situ

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

Abstract

The reinforced structure element for an road vehicle is formed by a hollow external body (20) in which the internal walls delimit a chamber (23) filled with foam. The filled chamber encloses an internal ribbed aluminium frame (25) which delimits cavities (30) filled with foam. These cavities are limited by the internal walls (20i) of the external body. The frame ribs (26,27,35) are orientated towards the internal walls of the external body.

Description

ELERIENT DE STRUCTURE RENFORCE ET SON PROCEDE DE
FABRICATION L'inventioll concerne un élément de structure renforcé et son procédé de fabrication.REINFORCED STRUCTURE ELERIENT AND METHOD OF
MANUFACTURING The inventioll concerns a reinforced structural element and its manufacturing process.

L'invention concerne plus précisément un élément de structure renforcé destiné à etre utilisé dans les véhicules automobiles, sur lequel les parois intérieures d'un corps creux délimitent une chambre de remplissage d'une matière telle qu'une mousse.The invention more specifically relates to a reinforced structural element for use in motor vehicles, wherein the inner walls of a hollow body delimit a filling chamber of a material such as a foam.

Cul connait par la publication DE-U- 1983413 un véhicule dans lequel on associe à la structure du véhicule un élément d'absorption d'énergie, qui s'étend sur la largeur du véhicule et qui est formé par un corps creux de section transversale en U dont les branches opposées sont alignées horizontalement. Le corps creux est rempli d'une mousse plastique. Ce mode d'exécution a cependant pour inconvénient que le corps creux ne présente qu'une faible rigidité. Les branches du corps creux ainsi réalisé fléchissent sous l'effet d'efforts relativement faibles. de sorte que son pouvoir d'absorption d'énergie par déformation est insuffisante. Cul discloses by the publication DE-U-1983413 a vehicle in which the vehicle structure is associated with an energy absorbing element, which extends over the width of the vehicle and which is formed by a hollow body of cross section. in U whose opposite branches are aligned horizontally. The hollow body is filled with a plastic foam. This embodiment however has the disadvantage that the hollow body has only a low rigidity. The branches of the hollow body thus produced flex under the effect of relatively low forces. so that its energy absorption capacity by deformation is insufficient.

A partir de ces considérations, I'invention a pour objet de réaliser un élément de structure renforcé à forte rigidité. Non seulement la fabrication doit en ètre simple mais on doit aussi pouvoir adapter le renforcement proposé à différentes variantes d'éléments de structure compte tenu de leur section et de leur localisation.From these considerations, the invention aims to provide a reinforced structural element with high rigidity. Not only must the manufacture be simple but it must also be able to adapt the proposed reinforcement to different variants of structural elements given their section and their location.

Poul- atteindre cet objectif, selon l'invention la chambre de remplissage de l'élément de structure renferme un élément intérieur rigide nervuré qui délimite des cavités remplies de mousse formées au contact de l'élément intérieur et limitées par les parois de l'élément extérieur.In order to achieve this objective, according to the invention the filling chamber of the structural element encloses a ribbed rigid inner element which delimits cavities filled with foam formed in contact with the inner element and limited by the walls of the element. outside.

L'invention présente l'avantage de s'adapter à des corps creux faiblement résistants faisant partie d'une structure ou d'un châssis allégé. The invention has the advantage of adapting to weakly resistant hollow bodies forming part of a lightened structure or chassis.

L'invention présente également l'avantage de pouvoir équiper certains tronçons de la structure ou du châssis d'un véhicule support de la carrosserie dudit véhicule.The invention also has the advantage of being able to equip certain sections of the structure or of the frame of a carrier vehicle of the bodywork of said vehicle.

L'davantage principal de Invention consiste en ce que l'on obtient au moyen d'un élément de structure et de son remplissage un élément transmetteur d'effort indépendamment de la forme de l'élément de structure. L'élément de structure permet de la sorte d'accroitre localement la rigidité de ladite structure.  The main feature of the invention is that a structural element and its filling is provided with a force-transmitting element regardless of the shape of the structural element. The structural element thus makes it possible to locally increase the rigidity of said structure.

La réalisation de l'élément de structure est particulièrement simple et s'obtient par simple chauffage de l'élément intérieur, pour réaliser l'expansion d'un produit moussant qui assurera de la sorte l'enrobage et l'immobilisation dudit élément intérieur et le collage du produit moussant sur les parois intérieures de l'élément extérieur. The embodiment of the structural element is particularly simple and is obtained by simple heating of the inner element, to achieve the expansion of a foaming product which will thereby ensure the coating and the immobilization of said inner element and bonding the foaming product on the inner walls of the outer member.

D'autres caractéristiques et avantages de l'invention apparaltront au cours de la description qui va suivre en référence au dessin annexé donné uniquement à titre d'exemple dans lequel - la figure I est une sue en élévation d'une carrosserie de véhicule
automobile sur laquelle on a représenté à titre d'exemple non limitatif les
localisations possibles de l'élément de structure conforme à l'invention.Other features and advantages of the invention will become apparent from the following description with reference to the accompanying drawing given solely by way of example in which - Figure I is an elevational view of a vehicle body
automobile, on which is shown by way of non-limiting example the
possible locations of the structural element according to the invention.

- la figure 2 est une représentation perspective de l'armature intérieure.- Figure 2 is a perspective representation of the inner frame.

- les figures 3 et 4 sont des sues en coupe de l'élément de structure suivant
la lippe IV-IVde la figure I respectivement avant et après l'expansion de
l'élément moussant.- Figures 3 and 4 are sues in section of the following structural element
I-IV in Figure I respectively before and after the expansion of
the foaming element.

La figure 1 représente schématiquement une carrosserie 10 de véhicule automobile montée sur un soubassement 11. Sur le soubassement 11 la rèlérence 12 désigne le longeron intérieur dont les parties 13, 14 en pointillé sont constituées à titre d'exemples non limitatifs par des éléments de structure conformes à Pinvention. FIG. 1 schematically represents a motor vehicle body 10 mounted on a base 11. On the base 11, the reference 12 designates the inner spar, the dotted portions 13, 14 of which are constituted as non-limiting examples by structural elements. according to the invention.

Ainsi que cela est représenté à la figure 3 ou A un élément creux extérieur 20 est constitué par un profilé à section en U 21 dont les sommets rabattus constituent un bord de soudure au contact d'une tole de fermeture 22. As is shown in FIG. 3 or A, an outer hollow element 20 is constituted by a U-section section 21 whose folded vertices form a weld edge in contact with a closure plate 22.

Les parois intérieures 20i de l'élément 20 délimitent une chambre de remplissage 28.The inner walls 20i of the element 20 delimit a filling chamber 28.

Selon l'invention, une armature constituée par l'élément nervuré 25, qui supporte le produit moussant non expansé 24. L'armature 25 est introduite dans la chambre 28 et est reliée rigidement à la tole de fermeture 22. According to the invention, an armature constituted by the ribbed element 25, which supports the foamed unexpanded product 24. The armature 25 is introduced into the chamber 28 and is rigidly connected to the closure plate 22.

L'ensemble ainsi constitué est rapporté soudé, selon la figure 4 pour former un corps creux avec le profilé 21 de section en U.The assembly thus formed is reported welded, according to Figure 4 to form a hollow body with the section section 21 U.

L'ensemble ainsi assemblé permet le libre passage 23 des produits de décapage et de traitement de surface avant cuisson et donc l'auto-nettoyage de la paroi intérieure 20i de la pièce 21. 1
L'annature 25 est constituée par un profilé en matériau conducteur thermique tel qu'une fonte d'aluminium, de magnésium etc... dont les nervures 26, 27, 3s sont orientées vers la paroi intérieure 20i de l'élément extérieur 20. Ces nelwtlles qui délimitent des cavités 30. remplies de mousse assurent au cours d'un apport calorifique, la diffusion de la chaleur pour l'obtention d'une élévation de température. suffisante au déclenchement de l'expansion du produit moussant et son adhérence sur la paroi intérieure 20i (figure 4) lors du traitement du longeron 12 et de l'armature 25 au cours du passage de l'ensemble du véhicule dans les fours de cuisson.The assembly thus assembled allows the free passage of 23 stripping products and surface treatment before baking and thus the self-cleaning of the inner wall 20i of the room 21. 1
The annature 25 is constituted by a profile of thermal conductive material such as cast aluminum, magnesium etc ... whose ribs 26, 27, 3s are oriented towards the inner wall 20i of the outer member 20. These nelwtlles which delimit cavities 30. filled with foam ensure during a heat supply, the diffusion of heat to obtain a rise in temperature. sufficient to trigger the expansion of the foaming product and its adhesion to the inner wall 20i (Figure 4) during the treatment of the spar 12 and the frame 25 during the passage of the entire vehicle in the cooking ovens.

L'expansion envisagée de la mousse permet sensiblement de tripler son xolullle initial. L'armature 25 assure de la sorte simultanément l'apport de l'ellelgie calorifique nécessaire à l'expansion homogène du produit moussant le long de la portion nécessaire du profilé 21 et le renforcement local de ce dentier par suite du collage de l'armature 25 dans ledit profilé 21 par l'intermédiaire de la matière moussante.  The envisaged expansion of the foam substantially allows to triple its initial xolullle. The reinforcement 25 thus simultaneously ensures the supply of the heat transfer element necessary for the homogeneous expansion of the foaming product along the necessary portion of the profile 21 and the local reinforcement of this denture as a result of the bonding of the reinforcement. In said profile 21 via the foaming material.

Claims (4)

REVENDICATIONS extérieur (20). outside (20). intérieur et limitées par lesdites parois intérieures (20i) de l'élément interior and limited by said inner walls (20i) of the element des cavités (30) remplies de mousse, formées au contact de l'élément cavities (30) filled with foam, formed in contact with the element remplissage (23) renferme un élément intérieur (25) nervuré qui délimite filling (23) encloses a ribbed interior element (25) which delimits matière telle qu'une mousse. caractérisé par le fait que la chambre de material such as a foam. characterized by the fact that the chamber of lequel les parois intérieures délimitent une chambre de remplissage d'une which the inner walls delimit a filling chamber of a I > Elément de structure renforcé formé par un corps creux extérieur (20) sur I> Reinforced structural element formed by an outer hollow body (20) on 2) Elément de structure selon la revendication 1 caractérisé par le fait que2) Structure element according to claim 1 characterized in that l'élément intérieur (25) porte des nervures (26, 27, 35) orientées vers les the inner element (25) has ribs (26, 27, 35) oriented towards the parois intérieures (20i) de l'élément extérieur (20). inner walls (20i) of the outer member (20). 3) Elément de structure selon la revendication 2, caractérisé par le fait que3) Structure element according to claim 2, characterized in that les nervures (26 27 35) de l'élément intérieur (25) sont portées par un the ribs (26 27 35) of the inner member (25) are carried by a renfort en fonte d'aluminium.  reinforcing cast aluminum. 4) Procédé de fabrication de l'élément de structure renforcé selon l'une4) Method of manufacturing the reinforced structural element according to one quelconque des revendications 1, 2 ou 3, caractérisé par le fait que l'on any of claims 1, 2 or 3, characterized by the fact that introduit dans une chambre de remplissage (28) une armature (25) introduced into a filling chamber (28) an armature (25) supportant un produit moussant (24) pour laisser le libre passage aux supporting a foaming product (24) to allow free passage to produits de traitement de surface et que l'on réalise l'apport calorifique surface treatment products and that one carries out the calorific nécessaire à l'expansion du produit moussant et à l'adhérence de celui-ci necessary for the expansion of the foaming product and the adhesion thereof aux surfaces (20i) intérieures du corps creux extérieure (20) pendant le to the inner surfaces (20i) of the outer hollow body (20) during the passage de l'ensemble du véhicule dans les fours de cuisson.  passage of the whole vehicle in the cooking ovens.
FR9606714A 1996-05-31 1996-05-31 REINFORCED STRUCTURAL ELEMENT AND MANUFACTURING METHOD THEREOF Expired - Fee Related FR2749263B1 (en)

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Cited By (27)

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Publication number Priority date Publication date Assignee Title
WO2000043254A1 (en) * 1999-01-25 2000-07-27 Henkel Corporation Reinforcing laminate containing carrier and expandable polymer
US6199940B1 (en) 2000-01-31 2001-03-13 Sika Corporation Tubular structural reinforcing member with thermally expansible foaming material
EP1109713A1 (en) * 1998-09-09 2001-06-27 Henkel Corporation Three dimensional laminate beam structure
US6253524B1 (en) 2000-01-31 2001-07-03 Sika Corporation Reinforcing member with thermally expansible structural reinforcing material and directional shelf
WO2001055523A1 (en) * 2000-01-31 2001-08-02 Sika Corporation Reinforcing member with beam shaped carrier and thermally expansible reinforcing material
EP1122156A2 (en) * 2000-02-07 2001-08-08 Sika Corporation Reinforcing member with intersecting support legs
WO2001058741A1 (en) * 2000-02-11 2001-08-16 L & L Products, Inc. Structural reinforcement system for automotive vehicles
EP1149679A2 (en) * 2000-04-26 2001-10-31 Neo-Ex Lab. Inc. Devices and structures for reinforcing hollow structural members
US6341467B1 (en) 1996-05-10 2002-01-29 Henkel Corporation Internal reinforcement for hollow structural elements
US6419305B1 (en) 2000-09-29 2002-07-16 L&L Products, Inc. Automotive pillar reinforcement system
EP1227030A1 (en) * 2001-01-30 2002-07-31 Ford Global Technologies, Inc., A subsidiary of Ford Motor Company Use of different versions of a profiled beam of a load-carrying structure
GB2375328A (en) * 2001-05-08 2002-11-13 L & L Products Reinforcing element for hollow structural member
US6494525B1 (en) 2000-09-15 2002-12-17 Sika Corporation Side impact reinforcement
FR2826093A1 (en) * 2001-06-15 2002-12-20 Peugeot Citroen Automobiles Sa Method for acoustically insulating cavity in car body comprises filling it with flakes of open-celled foam poured into it from flexible bag of same volume as cavity filled with flakes
JP2003522075A (en) * 2000-02-11 2003-07-22 エルアンドエル・プロダクツ・インコーポレイテッド Automotive structural reinforcement system
EP1707477A1 (en) * 2005-03-30 2006-10-04 L & L Products, Inc. A part for placement within a hollow member, and corresponding foaming process
US7141194B1 (en) 1998-03-20 2006-11-28 L&L Products, Inc. Hollow section with internal reinforcement and method of producing the hollow section
EP2159109A1 (en) * 2008-09-01 2010-03-03 Sika Technology AG Reinforcement with channel design
WO2010054194A1 (en) * 2008-11-07 2010-05-14 Zephyros, Inc. Hybrid reinforcement structure
US7735906B2 (en) 2007-09-28 2010-06-15 Zephyros, Inc. Reinforcement system for an automotive vehicle
US8530015B2 (en) 2006-01-17 2013-09-10 Zephyros, Inc. Reinforcement of hollow profiles
USRE44796E1 (en) 2000-06-12 2014-03-11 Zephyros, Inc. Bladder system for reinforcing a portion of a longitudinal structure
CN102317140B (en) * 2009-02-27 2015-06-03 Sika技术股份公司 Structural reinforcement system
US10106205B2 (en) 2016-07-21 2018-10-23 Zephyros, Inc. Reinforcement structure
EP3093222B1 (en) 2008-08-12 2018-12-12 Sika Technology AG Structural reinforcement system
US10173727B2 (en) 2016-07-28 2019-01-08 Zephyros, Inc. Multiple stage deformation reinforcement structure for impact absorption
DE112015005270B4 (en) 2014-12-17 2022-07-14 Mazda Motor Corporation vehicle frame

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US6482486B1 (en) 2000-03-14 2002-11-19 L&L Products Heat activated reinforcing sleeve
US6296298B1 (en) 2000-03-14 2001-10-02 L&L Products, Inc. Structural reinforcement member for wheel well
US6422575B1 (en) 2000-03-14 2002-07-23 L&L Products, Inc. Expandable pre-formed plug
US6820923B1 (en) 2000-08-03 2004-11-23 L&L Products Sound absorption system for automotive vehicles
US6634698B2 (en) 2000-08-14 2003-10-21 L&L Products, Inc. Vibrational reduction system for automotive vehicles
US6471285B1 (en) 2000-09-29 2002-10-29 L&L Products, Inc. Hydroform structural reinforcement system
US6561571B1 (en) 2000-09-29 2003-05-13 L&L Products, Inc. Structurally enhanced attachment of a reinforcing member
GB0106911D0 (en) 2001-03-20 2001-05-09 L & L Products Structural foam
US6502821B2 (en) 2001-05-16 2003-01-07 L&L Products, Inc. Automotive body panel damping system
US6729425B2 (en) 2001-09-05 2004-05-04 L&L Products, Inc. Adjustable reinforced structural assembly and method of use therefor
US6786533B2 (en) 2001-09-24 2004-09-07 L&L Products, Inc. Structural reinforcement system having modular segmented characteristics
US6793274B2 (en) 2001-11-14 2004-09-21 L&L Products, Inc. Automotive rail/frame energy management system
US7318873B2 (en) 2002-03-29 2008-01-15 Zephyros, Inc. Structurally reinforced members
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US7374219B2 (en) 2004-09-22 2008-05-20 Zephyros, Inc. Structural reinforcement member and method of use therefor
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Cited By (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6341467B1 (en) 1996-05-10 2002-01-29 Henkel Corporation Internal reinforcement for hollow structural elements
US7141194B1 (en) 1998-03-20 2006-11-28 L&L Products, Inc. Hollow section with internal reinforcement and method of producing the hollow section
EP1109713A1 (en) * 1998-09-09 2001-06-27 Henkel Corporation Three dimensional laminate beam structure
EP1109713A4 (en) * 1998-09-09 2003-02-12 Henkel Corp Three dimensional laminate beam structure
WO2000043254A1 (en) * 1999-01-25 2000-07-27 Henkel Corporation Reinforcing laminate containing carrier and expandable polymer
US6455144B1 (en) 1999-01-25 2002-09-24 Henkel Corporation Oven cured structural foam with designed-in sag positioning
US6199940B1 (en) 2000-01-31 2001-03-13 Sika Corporation Tubular structural reinforcing member with thermally expansible foaming material
US6253524B1 (en) 2000-01-31 2001-07-03 Sika Corporation Reinforcing member with thermally expansible structural reinforcing material and directional shelf
WO2001055523A1 (en) * 2000-01-31 2001-08-02 Sika Corporation Reinforcing member with beam shaped carrier and thermally expansible reinforcing material
US6305136B1 (en) * 2000-01-31 2001-10-23 Sika Corporation Reinforcing member with beam shaped carrier and thermally expansible reinforcing material
EP1122156A3 (en) * 2000-02-07 2001-09-12 Sika Corporation Reinforcing member with intersecting support legs
EP1122156A2 (en) * 2000-02-07 2001-08-08 Sika Corporation Reinforcing member with intersecting support legs
US6475577B1 (en) 2000-02-07 2002-11-05 Sika Corporation Reinforcing member with intersecting support legs
JP2003522075A (en) * 2000-02-11 2003-07-22 エルアンドエル・プロダクツ・インコーポレイテッド Automotive structural reinforcement system
JP4780634B2 (en) * 2000-02-11 2011-09-28 ゼファロス インコーポレイテッド Structural reinforcement system for automobiles
WO2001058741A1 (en) * 2000-02-11 2001-08-16 L & L Products, Inc. Structural reinforcement system for automotive vehicles
EP1149679A2 (en) * 2000-04-26 2001-10-31 Neo-Ex Lab. Inc. Devices and structures for reinforcing hollow structural members
US6550847B2 (en) 2000-04-26 2003-04-22 Neo-Ex Lab, Inc. Devices and methods for reinforcing hollow structural members
EP1149679A3 (en) * 2000-04-26 2002-07-17 Neo-Ex Lab. Inc. Devices and structures for reinforcing hollow structural members
USRE44796E1 (en) 2000-06-12 2014-03-11 Zephyros, Inc. Bladder system for reinforcing a portion of a longitudinal structure
US6494525B1 (en) 2000-09-15 2002-12-17 Sika Corporation Side impact reinforcement
US6519854B2 (en) 2000-09-15 2003-02-18 Sika Corporation Side impact reinforcement
US6419305B1 (en) 2000-09-29 2002-07-16 L&L Products, Inc. Automotive pillar reinforcement system
EP1227030A1 (en) * 2001-01-30 2002-07-31 Ford Global Technologies, Inc., A subsidiary of Ford Motor Company Use of different versions of a profiled beam of a load-carrying structure
GB2375328A (en) * 2001-05-08 2002-11-13 L & L Products Reinforcing element for hollow structural member
WO2002102624A1 (en) * 2001-06-15 2002-12-27 Peugeot Citroen Automobiles Method for acoustic insulation of a hollow body such as part of a motor vehicle body shell
FR2826093A1 (en) * 2001-06-15 2002-12-20 Peugeot Citroen Automobiles Sa Method for acoustically insulating cavity in car body comprises filling it with flakes of open-celled foam poured into it from flexible bag of same volume as cavity filled with flakes
EP1707477A1 (en) * 2005-03-30 2006-10-04 L & L Products, Inc. A part for placement within a hollow member, and corresponding foaming process
US8530015B2 (en) 2006-01-17 2013-09-10 Zephyros, Inc. Reinforcement of hollow profiles
US7735906B2 (en) 2007-09-28 2010-06-15 Zephyros, Inc. Reinforcement system for an automotive vehicle
EP3093222B1 (en) 2008-08-12 2018-12-12 Sika Technology AG Structural reinforcement system
WO2010023325A2 (en) * 2008-09-01 2010-03-04 Sika Technology Ag Reinforcement with channel design
KR20160106199A (en) * 2008-09-01 2016-09-09 시카 테크놀러지 아게 Method for reinforcing object
US20110236610A1 (en) * 2008-09-01 2011-09-29 Vincent Belpaire Reinforcement with channel design
JP2012501266A (en) * 2008-09-01 2012-01-19 シーカ・テクノロジー・アーゲー Reinforcement with groove design
EP2159109A1 (en) * 2008-09-01 2010-03-03 Sika Technology AG Reinforcement with channel design
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