WO2009129881A1 - Élément déformable pour un véhicule automobile - Google Patents

Élément déformable pour un véhicule automobile Download PDF

Info

Publication number
WO2009129881A1
WO2009129881A1 PCT/EP2009/000864 EP2009000864W WO2009129881A1 WO 2009129881 A1 WO2009129881 A1 WO 2009129881A1 EP 2009000864 W EP2009000864 W EP 2009000864W WO 2009129881 A1 WO2009129881 A1 WO 2009129881A1
Authority
WO
WIPO (PCT)
Prior art keywords
deformation element
intermediate body
element according
force
phase
Prior art date
Application number
PCT/EP2009/000864
Other languages
German (de)
English (en)
Inventor
Viktor Nowikow
Walter Nuber
Bärbel SONNTAG
Original Assignee
Daimler Ag
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 Daimler Ag filed Critical Daimler Ag
Publication of WO2009129881A1 publication Critical patent/WO2009129881A1/fr

Links

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
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • 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
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/186—Additional energy absorbing means supported on bumber beams, e.g. cellular structures or material

Definitions

  • the invention relates to a deformation element for a motor vehicle, in particular a passenger car, specified in the preamble of claim 1.
  • the local deformation element is designed as a foam body, which has a cross member and a bumper part facing support elements or support surfaces, which are interconnected via an extending in the vehicle longitudinal direction intermediate body.
  • the foam body has the property to deform at an accidental force application to absorb impact energy or shorten in length, which has the consequence that the intermediate body with increasing deformation is stiffer or opposes a higher deformation force of the accident force. After a certain deformation length, the local deformation element then goes to block.
  • Object of the present invention is to provide a deformation element of the type mentioned, which has other deformation properties.
  • the intermediate body of the deformation element is made stiffer in a first phase of an accidental application of force than in a second phase of the accident Application of force.
  • the deformation element when the intermediate body is formed in the second phase of the accidental application of force at least substantially abruptly failed.
  • the deformation element must fail in this case practically abruptly, so may not act energy-consuming, which is achieved for example by suitable predetermined breaking points, predetermined bending points or predetermined bending points.
  • it is ensured in a particularly reliable manner that the deformation force counteracting the accident force by the deformation element abruptly drops.
  • the intermediate body is designed to absorb impact energy in the first phase of the accidental application of force. As a result, in particular an excessive admission of the legs of the pedestrian is avoided.
  • the intermediate body has at least one strip part running in the vehicle longitudinal direction.
  • a strip part can be made particularly favorable so that it is correspondingly stiff in the first phase of the accidental application of force, while it is correspondingly softer in the second phase or preferably gives way abruptly. In order to achieve the above-described properties of the strip part particularly well, it is provided in a further embodiment of the invention that this extends substantially horizontally.
  • the strip portion is reinforced by a reinforcing strip which extends in the vehicle longitudinal direction and transverse to the strip portion.
  • a reinforcing strip which extends in the vehicle longitudinal direction and transverse to the strip portion.
  • a particularly simple to be designed and yet highly effective intermediate body can be created by this is designed as a sheet metal component.
  • the deformation element / the intermediate body made of plastic material.
  • a particularly preferred embodiment also provides for the functional integration of a sensor unit in the deformation element.
  • the sensor unit is arranged near the bumper-side support element. This results in a particularly close arrangement to the outside of the motor vehicle.
  • Fig. 1 is a schematic perspective view of a deformation element for a passenger car, which has respective, designed as support flanges and a cross member or a bumper member facing support elements which are interconnected via an extending in the vehicle longitudinal direction intermediate body, wherein the intermediate body of a plurality of strip parts and Reinforcing strip is formed, and wherein the intermediate body in one the first phase of an accidental application of force is stiffer than in a second phase;
  • FIG. 2 shows a perspective view of a deformation element according to an alternative embodiment, in which a sensor unit is received near the bumper-side support element by the deformation element;
  • a deformation element 10 is shown for a passenger car in a schematic perspective view.
  • the arrangement of the deformation element 10 can be seen from FIG. 3, which shows a course of an accident scenario or deformation of a deformation element 10, which will be explained in more detail below, in a sequence of four representations.
  • FIG. 3 shows in a respective side view the arrangement of the deformation element 10 at the front end of the passenger car. More specifically, the deformation element 10 is supported on an underlying cross member 12, which in turn is supported by the intermediary of a respective crash box 14 on the underlying front structure of the passenger car.
  • the crash box 14 is correspondingly designed so that it responds to more serious or more serious head-on collisions of the passenger car.
  • the arrangement consists of at least two deformation elements 10, which are laterally spaced from each other at the front portion of the cross member 12 are supported.
  • a bumper part 16 is only extremely schematically recognizable.
  • the bumper part 16 is in the present case in the undeformed arrangement in contact with the deformation element 10.
  • a small distance between the deformation element 10 and the bumper portion 16 may be present.
  • the deformation element 10 comprises a support element 18 facing the transverse support 12 and a support element 20 facing the bumper part 16, both of which are designed as respective support flanges.
  • an intermediate body 22 of the deformation element 10 which in the present case essentially consists of two extending in the vehicle longitudinal strip portions 24, 26 and two reinforcing strips 28, 30 formed in the vehicle longitudinal direction and transverse to the Strip parts 24, 26 extend.
  • Each of the reinforcing strips 28, 30 forms a corresponding reinforcement of the associated strip portion 24 or 26, so that in total by the respective reinforcing strip 28, 30 and the respective strip portion 24, 26 results in each case a cross-sectionally approximately T-shaped structure.
  • the strip parts 24, 26 as well as the reinforcing strips 28, 30 in this case consist of a corresponding sheet.
  • the strip parts 24, 26 are adapted in their width to the two support elements or support flanges 18, 20. It would possibly also be possible to make some of the parts in one piece in the form of a bent sheet metal part. Likewise, it would of course also conceivable to make the deformation element 10 at least partially made of another material, for example a plastic.
  • FIG. 3 it can now be seen how the deformation element 10 functions in the case of an accident-induced application of force, as occurs, for example, in a head-on collision of the passenger vehicle with a pedestrian.
  • the pedestrian enters his legs with the bumper part 16 in contact.
  • a first phase of the accidental application of force is detectable in a head-on collision of the passenger car with the pedestrian, wherein it can be seen in particular that in this first phase of the accidental application of force, the deformation element 10 or its intermediate body 22 is relatively stiff.
  • this rigidity and arrangement of the deformation element 10 in a predisposed position on the vehicle it is achieved that the pedestrian, who first strikes with his legs, is braked early with the elimination of energy.
  • a second phase of the accidental application of force is shown, in which the intermediate body 22 has a lower rigidity than in the first phase described above.
  • the stiffness should subside more or less abruptly and thus at least substantially abruptly fail the intermediate body. This is achieved, for example, via predetermined breaking points, predetermined bending points or predetermined bending points in the respective strip parts 24, 26 or reinforcing parts 28, 30.
  • the strip parts 24, 26 as well as the reinforcing strips 28, 30 are substantially planar and extend in the vehicle longitudinal direction, ie in the direction in which the deformation element 10 or intermediate body 22 is primarily acted upon by accident force.
  • the strip portions 24, 26 and reinforcing strips 28, 30 are initially relatively stiff in an accidental application of force in the vehicle longitudinal direction from the front, which abruptly decrease in their ability to deform or stiffness as soon as they bend, break or bend accordingly.
  • the deformation element 10 is finally shown in an alternative embodiment, again the two strip parts 24, 26 are provided, which connect front support elements 32 near the bumper part 16 with a rear support member 34.
  • the two strip parts 24, 26 are connected to one another via an intermediate web 36.
  • a sensor unit 38 is received by the deformation element 10 at the front end near the bumper-side support elements 32.
  • the sensor unit 38 is thus arranged near the bumper part 16, so that it is arranged particularly favorable at the front end of the motor vehicle bug.
  • the sensor unit 38 can thus be used, for example, as a proximity sensor or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Vibration Dampers (AREA)

Abstract

L'invention concerne un élément déformable pour un véhicule automobile, en particulier une voiture particulière, qui possède différents éléments d'appui (18, 20) qui sont tournés vers une traverse (12) et une partie de pare-chocs (16) et qui sont reliés ensemble par un corps intermédiaire (22) s'étendant dans la direction longitudinale du véhicule, le corps intermédiaire (22) étant configuré de manière plus rigide dans la première phase d'une application de forces en raison d'un accident que dans une deuxième phase d'application de forces en raison d'un accident.
PCT/EP2009/000864 2008-04-22 2009-02-07 Élément déformable pour un véhicule automobile WO2009129881A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008020055.7 2008-04-22
DE102008020055A DE102008020055A1 (de) 2008-04-22 2008-04-22 Deformationselement für einen Kraftwagen

Publications (1)

Publication Number Publication Date
WO2009129881A1 true WO2009129881A1 (fr) 2009-10-29

Family

ID=40577685

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/000864 WO2009129881A1 (fr) 2008-04-22 2009-02-07 Élément déformable pour un véhicule automobile

Country Status (2)

Country Link
DE (1) DE102008020055A1 (fr)
WO (1) WO2009129881A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022104524A1 (de) 2022-02-25 2023-08-31 Next.E.Go Mobile SE STOßFÄNGERANORDNUNG FÜR EIN KRAFTFAHRZEUG MIT WENIGSTENS EINER SOLLKNICKSTELLE UND KRAFTFAHRZEUG MIT EINER STOßFÄNGERANORDNUNG

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1318323A2 (fr) * 2001-12-05 2003-06-11 Peugeot Citroen Automobiles SA Dispositif d'absorption d'énergie
FR2836878A1 (fr) * 2002-03-08 2003-09-12 Plastic Omnium Cie Absorbeur d'energie destine a s'intercaler entre une poutre rigide et une peau de pare-chocs et ensemble d'absorption d'energie
EP1544052A1 (fr) * 2002-08-27 2005-06-22 Kaneka Corporation Materiau amortissant le choc d'une collision d'un vehicule et structure amortissant le choc d'une collision d'un vehicule utilisant ledit materiau
DE102004024468A1 (de) * 2004-05-14 2005-12-08 Volkswagen Ag Aufpralldämpfende Bauteilanordnung für ein Fahrzeug, insbesondere Stossfängeranordnung für ein Kraftfahrzeug
FR2883238A1 (fr) * 2005-03-17 2006-09-22 Peguform France Sa Pare-chocs de vehicule comprenant une peau, une poutre et des organes de renfort
EP1736381A1 (fr) * 2005-06-22 2006-12-27 HONDA MOTOR CO., Ltd. Dispositif de pare-choc avant pour véhicule

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3539214B2 (ja) * 1998-06-19 2004-07-07 日産自動車株式会社 衝撃吸収バンパー構造
US6846026B2 (en) * 2002-02-28 2005-01-25 Honda Giken Kogyo Kabushiki Kaisha Vehicle pedestrian safety bumper system
DE10253270A1 (de) * 2002-11-15 2004-06-09 Volkswagen Ag Aufpralldämpfendes Bauelement für ein Fahrzeug
EP1582413A1 (fr) * 2004-03-30 2005-10-05 Ford Global Technologies, Inc. Un dispositif de pare-choc pour un véhicule
DE102005037151A1 (de) 2005-08-06 2007-02-08 Daimlerchrysler Ag Stoßfängeranordnung für ein Kraftfahrzeug
DE102006000503A1 (de) * 2006-04-30 2007-10-31 Jan Jansen Deformationstruktur für den Frontbereich von Kraftfahrzeugen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1318323A2 (fr) * 2001-12-05 2003-06-11 Peugeot Citroen Automobiles SA Dispositif d'absorption d'énergie
FR2836878A1 (fr) * 2002-03-08 2003-09-12 Plastic Omnium Cie Absorbeur d'energie destine a s'intercaler entre une poutre rigide et une peau de pare-chocs et ensemble d'absorption d'energie
EP1544052A1 (fr) * 2002-08-27 2005-06-22 Kaneka Corporation Materiau amortissant le choc d'une collision d'un vehicule et structure amortissant le choc d'une collision d'un vehicule utilisant ledit materiau
DE102004024468A1 (de) * 2004-05-14 2005-12-08 Volkswagen Ag Aufpralldämpfende Bauteilanordnung für ein Fahrzeug, insbesondere Stossfängeranordnung für ein Kraftfahrzeug
FR2883238A1 (fr) * 2005-03-17 2006-09-22 Peguform France Sa Pare-chocs de vehicule comprenant une peau, une poutre et des organes de renfort
EP1736381A1 (fr) * 2005-06-22 2006-12-27 HONDA MOTOR CO., Ltd. Dispositif de pare-choc avant pour véhicule

Also Published As

Publication number Publication date
DE102008020055A1 (de) 2009-11-12

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