FR2822115A1 - Energy absorber for fitting between motor vehicle fender and supporting bar comprises roll of combined corrugated and smooth metal strips - Google Patents

Energy absorber for fitting between motor vehicle fender and supporting bar comprises roll of combined corrugated and smooth metal strips Download PDF

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Publication number
FR2822115A1
FR2822115A1 FR0103377A FR0103377A FR2822115A1 FR 2822115 A1 FR2822115 A1 FR 2822115A1 FR 0103377 A FR0103377 A FR 0103377A FR 0103377 A FR0103377 A FR 0103377A FR 2822115 A1 FR2822115 A1 FR 2822115A1
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France
Prior art keywords
element according
metal strips
energy absorber
rep
fitting
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Granted
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FR0103377A
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French (fr)
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FR2822115B1 (en
Inventor
Denis Bastien
Frederic Caramanos
Bertrand Ardilouze
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TREVINAL MAURICE
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TREVINAL MAURICE
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Priority to FR0103377A priority Critical patent/FR2822115B1/en
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Publication of FR2822115B1 publication Critical patent/FR2822115B1/en
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Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
    • F16F7/121—Vibration-dampers; Shock-absorbers using plastic deformation of members the members having a cellular, e.g. honeycomb, structure
    • F16F7/122—Vibration-dampers; Shock-absorbers using plastic deformation of members the members having a cellular, e.g. honeycomb, structure characterised by corrugations, e.g. of rolled corrugated material
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)

Abstract

The energy absorber consists of a roll (5) made from corrugated (7) and smooth (6) metal strips, stuck together with adhesive where they meet. The roll can be round, oval or polygonal in cross-section and enclosed in a capsule to protect it from corrosion and for fixing it in place, and it is locally weakened for efficient operation, either by pre-crushing it, or making slots or holes at one end.

Description

<Desc/Clms Page number 1> <Desc / Clms Page number 1>

La présente invention concerne un dispositif absorbeur d'énergie destiné a des utilisations de sécurité passive dans des véhicules routiers. The present invention relates to an energy absorbing device intended for passive safety uses in road vehicles.

L'absorption d'énergie, en ce qui concerne les véhicules, est traditionnellement réalisée, par le bouclier et la poutre qu'il contient d'une part et par la déformation propre de leur structure par ailleurs.

Figure img00010001
Energy absorption, with regard to vehicles, is traditionally carried out, by the shield and the beam which it contains on the one hand and by the proper deformation of their structure on the other hand.
Figure img00010001

L'absorbeur, objet de la présente invention, permet d'intercaler, entre la structure et le bouclier et sa poutre, un ou plusieurs éléments fusibles destinés a absorber une quantité d'énergie importante. The absorber, object of the present invention, allows to interpose, between the structure and the shield and its beam, one or more fusible elements intended to absorb a large amount of energy.

Cette absorption d'énergie présente plusieurs avantages. D'une part, elle accroît d'une manière importante, la capacité globale d'absorption du véhicule, d'autre part, elle retarde l'apparition de dommages irréversibles a la structure, minimisant de ce fait les coûts de réparation.  This energy absorption has several advantages. On the one hand, it significantly increases the overall absorption capacity of the vehicle, on the other hand, it delays the appearance of irreversible damage to the structure, thereby minimizing repair costs.

L'élément absorbeur, objet de la présente invention, est réalisé a partir d'un feuillard métallique (rép 1, figl) déformé, a l'aide d'un dispositif mécanique (rép 2, figl) en une sorte de tôle ondulée (rép 3, figl). Ce feuillard dit également"gaufré"est encollé en ligne par un dispositif connu (rép 4, figl) puis associés a un feuillard lisse (rép 6, fig).  The absorbing element, object of the present invention, is produced from a metal strip (rep 1, figl) deformed, using a mechanical device (rep 2, figl) into a kind of corrugated sheet ( rep 3, figl). This strip also called "embossed" is glued online by a known device (rep 4, figl) and then associated with a smooth strip (rep 6, fig).

Ces deux feuillards, ainsi cdllé ensembles par le sommet des ondulations, sont enroulés selon un axe (xx'fig 1) en une sorte de cylindre dans lequel les couches se superposent en une spirale (rép5, figl)
Il est remarquable que l'enroulement peut volontairement s'écarter de la forme cylindrique afin d'obtenir par exemple un absorbeur a section ovale (fig 2) ou polygonal (fig 3) en fonction des caractéristiques recherchées. These two strips, thus joined together by the top of the undulations, are wound along an axis (xx'fig 1) in a kind of cylinder in which the layers are superimposed in a spiral (rep5, figl)
It is remarkable that the winding can voluntarily deviate from the cylindrical shape in order to obtain, for example, an absorber with an oval (fig 2) or polygonal (fig 3) section depending on the characteristics sought.

Afin d'obtenir un écrasement progressif, il est nécessaire que l'élément réalisé possède au moins une zone d'affaiblissement qui peut être réalisée de plusieurs manières : - Soit par un pré-écrasement (rep A fig 4) de l'une au moins des extrémités.  In order to obtain a progressive crushing, it is necessary that the produced element has at least one weakening zone which can be carried out in several ways: - Either by a pre-crushing (rep A fig 4) from one to minus the ends.

- Soit par des évidements a la surface de l'une au moins des extrémités (fig 5) - Soit par des perçages transverses a l'axe xx'réalisés après l'enroulement. (fig 6) - Soit par des perçages réalisés avant leur mise en forme sur l'un ou l'autre des deux feuillards. (rep 7 fig 1) - Either by recesses on the surface of at least one of the ends (fig 5) - Or by holes transverse to the axis xx'realized after winding. (fig 6) - Either by holes made before their shaping on one or the other of the two strips. (rep 7 fig 1)

<Desc/Clms Page number 2> <Desc / Clms Page number 2>

L'élément absorbeur ainsi réalisé permet d'absorber des efforts dirigés suivant l'axe principal mais également, avec une efficacité moindre, suivant un axe convergent a cet axe principal. The absorber element thus produced makes it possible to absorb forces directed along the main axis but also, with less efficiency, along an axis converging on this main axis.

Une présentation particulière de l'élément absorbeur ainsi réalisé, consiste en son encapsulage afin de le protéger de la corrosion et de faciliter sa fixation. A particular presentation of the absorber element thus produced, consists of its encapsulation in order to protect it from corrosion and to facilitate its fixing.

Claims (9)

REVENDICATIONS 1) Elément absorbeur d'énergie destiné a des utilisations de sécurité passive dans les véhicules automobiles caractérisé par le fait qu'il est constitué de l'enroulement d'un feuillard gaufré (Rep 1, fig A) et d'un feuillard lisse (Rep 2, fig A). 1) Energy absorbing element intended for passive safety uses in motor vehicles characterized by the fact that it consists of the winding of an embossed strip (Rep 1, fig A) and of a smooth strip (Rep 2, fig A). 2) Elément selon la revendication 1 caractérisé par la liaison par collage des feuillards sus-cités en chaque point et génératrice où ils sont en contact. 2) Element according to claim 1 characterized by the bonding by gluing of the aforementioned strips at each point and generator where they are in contact. 3) Elément selon les revendications 1 et 2 caractérisé par le fait que l'enroulement est circulaire et qu'il produit un absorbeur de forme cylindrique (Rep 3, fig A). 3) Element according to claims 1 and 2 characterized in that the winding is circular and that it produces an absorber of cylindrical shape (Rep 3, fig A). 4) Elément selon les revendications 1 et 2 caractérisé par le fait que l'enroulement peut également être de section ovale (fig B) ou polygonale (fig C). 4) Element according to claims 1 and 2 characterized in that the winding can also be of oval section (fig B) or polygonal (fig C). 5) Elément selon les revendications 1,2, 3,4 comportant un affaiblissement localisé. 5) Element according to claims 1,2, 3,4 comprising a localized weakening. 6) Elément selon la revendication 5 caractérisé par le fait que l'affaiblissement est réalisé par un pré-écrasement. 6) Element according to claim 5 characterized in that the weakening is achieved by a pre-crushing.
Figure img00030001
Figure img00030001
 7) Elément selon la revendication 5 caractérisé par le fait que l'affaiblissement est réalisé par un enlèvement localisé de matière. 7) Element according to claim 5 characterized in that the weakening is achieved by a local removal of material. 8) Elément selon les revendications 1,2, 3,4, 5,6 ou 7 caractérisé par un encapsulage permettant sa protection contre la corrosion. 8) Element according to claims 1,2, 3,4, 5,6 or 7 characterized by an encapsulation allowing its protection against corrosion.
Figure img00030002
Figure img00030002
 9) Elément selon la revendications 8 caractérisé par un encapsulage permettant également sa liaison avec la structure et le bouclier.9) Element according to claim 8 characterized by an encapsulation also allowing its connection with the structure and the shield.
FR0103377A 2001-03-13 2001-03-13 ENERGY ABSORBING ELEMENT FOR PROVIDING PASSIVE SAFETY IN ROAD VEHICLES Expired - Fee Related FR2822115B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0103377A FR2822115B1 (en) 2001-03-13 2001-03-13 ENERGY ABSORBING ELEMENT FOR PROVIDING PASSIVE SAFETY IN ROAD VEHICLES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0103377A FR2822115B1 (en) 2001-03-13 2001-03-13 ENERGY ABSORBING ELEMENT FOR PROVIDING PASSIVE SAFETY IN ROAD VEHICLES

Publications (2)

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FR2822115A1 true FR2822115A1 (en) 2002-09-20
FR2822115B1 FR2822115B1 (en) 2003-06-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1878620A1 (en) * 2006-07-11 2008-01-16 Honda Motor Co., Ltd Vehicle bumper assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466733A (en) * 1963-05-31 1969-09-16 American Cyanamid Co Method of making shock absorber cartridge
DE19650647A1 (en) * 1996-12-06 1997-04-24 Audi Ag Energy-absorbing deformation element for vehicles
DE19820463A1 (en) * 1998-05-07 1999-11-11 Emitec Emissionstechnologie Support structure with a deformation element with radial deformation limiters

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466733A (en) * 1963-05-31 1969-09-16 American Cyanamid Co Method of making shock absorber cartridge
DE19650647A1 (en) * 1996-12-06 1997-04-24 Audi Ag Energy-absorbing deformation element for vehicles
DE19820463A1 (en) * 1998-05-07 1999-11-11 Emitec Emissionstechnologie Support structure with a deformation element with radial deformation limiters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1878620A1 (en) * 2006-07-11 2008-01-16 Honda Motor Co., Ltd Vehicle bumper assembly

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Effective date: 20111130