WO2015003983A1 - Dispositif d'absorption des impacts destiné à un véhicule automobile - Google Patents

Dispositif d'absorption des impacts destiné à un véhicule automobile Download PDF

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Publication number
WO2015003983A1
WO2015003983A1 PCT/EP2014/064128 EP2014064128W WO2015003983A1 WO 2015003983 A1 WO2015003983 A1 WO 2015003983A1 EP 2014064128 W EP2014064128 W EP 2014064128W WO 2015003983 A1 WO2015003983 A1 WO 2015003983A1
Authority
WO
WIPO (PCT)
Prior art keywords
cross member
section
energy absorption
shock absorbing
absorbing device
Prior art date
Application number
PCT/EP2014/064128
Other languages
German (de)
English (en)
Inventor
Rolf Schwarzer
Marco Toeller
Original Assignee
Kirchhoff Automotive Deutschland Gmbh
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 Kirchhoff Automotive Deutschland Gmbh filed Critical Kirchhoff Automotive Deutschland Gmbh
Publication of WO2015003983A1 publication Critical patent/WO2015003983A1/fr

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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
    • B60R19/18—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
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • B60R2019/1813—Structural beams therefor, e.g. shock-absorbing made of metal

Definitions

  • the invention relates to a substituted shock absorption device for a motor vehicle, comprising a substantially made of a cross-sectionally C-shaped cross member, which is arranged open in the direction of the body, with at least one integrally formed therein energy absorption component section and with at least one integrally formed therein longitudinal support connection portion.
  • Such a shock absorbing device usually a cross member, two spaced apart and attached to this crash boxes, as well as materially connected connection plates, so-called baseplates, for attachment to the longitudinal members of the body ,
  • the cross member can be designed as an open or closed profile.
  • An open profile is usually represented by a single substantially U-, C- or hat-shaped sheet metal shell.
  • a closed profile is understood to mean either a U-, C- or hat-shaped shell profile, which is provided on its rear side with a striking plate or, for example, an extruded extrusion profile or a profile in which just mentioned shell designs are directed opposite to one another and along their longitudinal course ie transverse to the direction of travel and thus in the y-direction, are at least partially connected such that they support each other at least on their sides or flanks parked on it.
  • both closed and open profiles it is not necessary to close the respective outer sides to improve the impact properties.
  • a substituted shock absorption device essentially consists of only one cross member, in which the crash boxes are integrated as energy absorption component sections and the base plates are integrally formed as side member connection sections.
  • DE 10 2007 038 496 A1 addresses the disadvantage described in DE 10 2008 026 334 A1 by disclosing therein a method for producing a U-shaped cross member, which has a middle section and respectively adjoining connecting sections which at the same time terminate as Serve Crashbox and are integrally formed with the cross member.
  • a method for producing a U-shaped cross member which has a middle section and respectively adjoining connecting sections which at the same time terminate as Serve Crashbox and are integrally formed with the cross member.
  • the cross member In order for the cross member to meet the desired crash requirements, i. rigid and firm, but additional steps, such as additional hardening necessary.
  • DE 197 15 874 A1 shows a front structure for a passenger car with an upper and lower cross member assembly, which are connected to each other by at least two spaced apart in the vehicle direction tension struts force transfer.
  • a cross member shown here shows a U-shaped cross member profile with lateral leg extensions which protrude approximately horizontally in the vehicle longitudinal direction to the rear. The mentioned leg extensions are detachable on the longitudinal member sections of the body structure, preferably by means of screw connections. fixed and locked inward.
  • DE 10 2006 057 993 A1 discloses an energy absorption device having a first hollow longitudinal section of first cross-sectional depth and a second hollow longitudinal section of second cross-sectional width and an inverted transitional region between the hollow longitudinal sections, in which these are aligned obliquely to one another prior to energy absorption.
  • the device can be manufactured from TWIP steels.
  • a problem in the prior art is also that open profiles, in contrast to closed profiles have a much lower energy absorption potential. This can be countered, either additional steps, such as partial hardening, or the introduction of additional reinforcing elements are required. In a conventional multi-part embodiment, there are also the disadvantages in terms of process control, tolerance compensation and high costs associated therewith.
  • the problem is solved by the aforementioned generic shock absorption device in which the cross member is formed closed at least in the extent of its energy absorption sections of TWIP steel and to form a shell at its pointing in the y direction outer side.
  • TWIP steel (Twinning Induced Plasticity) is a reduced-density steel grade that undergoes twinning during plastic deformation, which causes the steel to strongly solidify with high elongation at fracture.
  • the property of high ductility has been made in the present invention for the benefit of the shock absorption device in one piece in at least one deep drawing process is designed such that the basically C-shaped shell profile of the cross member at its outer, pointing in the y direction sides closed is.
  • the integrally formed energy absorption component section of the shell profile formed in this way is further formed in lateral view in its cross section larger than the rest of the cross section of the shell profile.
  • the impact absorbing device according to the invention does not collapse in the event of an impact, but the formed energy absorption regions undergo a folding process even without the introduction of beads, which among other things explain the good energy absorption results.
  • An advantage of the present invention is the high degree of integration that no additional components, such as separate crash boxes or connecting plates for connection to a side member must be made. As a result, the manufacturing process is simplified and also runs much faster. This is mainly because no additional welding operations must be performed and any tolerance problems of a multi-part assembly in the device according to the invention are not existent.
  • the deep drawing methods and apparatuses commonly used in the automotive industry for forming body panels can also be used to manufacture the shock absorbing device of the present invention. As a result, a reliable and robust forming process is available on the one hand, and high repeatability on the other.
  • the one-piece shock absorbing device is extremely variable in the structural designs, also offers the advantage that account can be taken with regard to the flexibility required by car manufacturers in the design space, for example, in terms of size and geometry. Selecting the material also results in lower weight and lower product costs.
  • Fig. 1 is an isometric view of a first embodiment of the shock absorbing device according to the invention
  • Fig. 2 is a front view of the shock absorbing device of the embodiment of Fig. 1;
  • Fig. 3 is a plan view of the shock absorbing device of the embodiment of Fig. 1;
  • Fig. 4 is a sectional view of the shock absorbing device of the embodiment of Fig. 1 along the line A-A;
  • Fig. 5 a rear view of another embodiment of the shock absorbing device according to the invention.
  • the substituted shock absorbing device 1 for a motor vehicle comprises a cross member 2 with a substantially C-shaped shell profile, which is arranged open towards the body, with at least one integrated therein energy absorption component section 3, 3.1 and at least one longitudinal carrier connection section 4, 4.1 integrally formed therein.
  • the impact absorption device 1 is preferably produced continuously from a TWIP steel, for example from HSD 600, by a deep-drawing process, as an open hollow profile in the form of a substantially C-shaped design.
  • the opening of the C-shaped cross member 2 is in the direction of the body, thus opposite to the direction of travel (x-direction), and is preferably over its longitudinal course, ie transverse to the direction of travel (y-direction), bent towards the rear. It goes without saying that the cross member naturally also comes from a tailor Rolled Blank can be formed.
  • the shock absorption device 1 can certainly also be formed in mate alkombinations, provided that at least the energy absorption section 3, 3.1 consists of TWIP steel. In such a configuration, it makes sense to provide at least the adjacent to the respective energy absorption section 3, 3.1 first section of the actual cross member 2 made of TWIP steel. In this respect, it is then also possible to form the device according to the invention, for example, as a tailored welded blank.
  • a shock absorbing device 1 is preferably fully circumferential flange formed on the C-shaped cross member 2 in the z direction, which is turned off by the frames 10, 10.1 and the contour of the cross member 2 to preferably 90 °.
  • a bead 7 extending transversely to the direction of travel is preferably introduced in the front side of the cross member 2 for stiffening purposes.
  • an opening 6, 6.1 is formed in the front side in each case in addition to the running transversely to the direction of travel bead 6, 6.1, which is suitable for receiving additional attachments, such as a towing device, threaded sleeves, nuts, etc.
  • such a bead is merely optional and therefore can be omitted, introduced in multiple training or at other locations of the shock absorbing device 1.
  • such an alternative location would be, for example, the energy absorption section 3, 3.1, which would additionally assist in the event of an impact of the folding process, which would also be present without introduced beads.
  • the shock absorption device 1 comprises two energy-absorbing sections 3, 3.1 designed in integrated construction.
  • the energy absorption sections 3, 3.1 have been created from one and the same board with the cross member 2 in the course of a forming process.
  • the energy absorption section 3 will be described. It is understood that the same statements speaking for the energy absorption section 3.1 apply.
  • the energy absorption section 3 is formed on an outer side of the cross member 2 such that it is pulled substantially lower than the viewed over its longitudinal average portion of the cross member 2.
  • the cross section of the energy absorption component section 3 is greater than the cross section of the other cross member 2, ie substantially the central region of the cross member 2. This is particularly clear from the cross-sectional view along the line AA of Fig. 4.
  • the transition from the energy absorption section 3 to the central region of the cross member 2 is preferably flowing.
  • the outer side of the shell profile 2 is formed closed, so that structurally a conventional crash box is shown integrated, which is open towards the inside and to the rear and therefore brings a material savings compared to the conventional devices.
  • the energy absorption section 3 is, viewed over the longitudinal extension of the cross member 2, formed so broad that this width largely corresponds to the width of the longitudinal member to be connected (not shown).
  • drawing depths in a range from 80 mm to 200 mm are preferably realized.
  • the impact absorption device 1 comprises two longitudinal carrier connection sections 4, 4.1, which are designed in integrated construction.
  • the side member connecting portion 4 will be described. It is understood that the same statements apply accordingly to the side member connecting section 4.1.
  • the flange 8 enclosing the energy absorption section 3 forms the side member connection section 4 in this region. This is provided with openings 6.2, 6.3, 6.8, 6.9 via which the impact absorption device 1 is connected to the longitudinal member of a body by means of connecting elements. It will be apparent to a person skilled in the art that optionally a reinforcing plate can also be interposed during the connection to the side member.
  • FIG. 5 a further embodiment of the impact absorption device 1 according to the invention is shown there.
  • Characteristic is the additional attachment of a striker plate 5 at the rear of the cross member 2, which further increases the flexural rigidity of the shock absorbing device 1. It would also be conceivable, of course, to provide the cross member 2 with a plurality of strike plates in its rear region, which are arranged at different sections. Incidentally, the statements made for the first embodiment apply.
  • the cross member 2 over its longitudinal course straight or space-optimized, for example, by an S-shaped transition from the Energyabsorptionsbauteilab- section to the central region of the cross member 2 is formed.

Landscapes

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

Abstract

L'invention concerne un dispositif d'absorption des impacts (1) destiné à un véhicule automobile, comprenant une traverse (2) constituée principalement d'un profilé de section transversale en C et dans laquelle est intégrée au moins une partie élément d'absorption d'énergie (3, 3.1) et dans laquelle est intégrée au moins une partie raccordement (4, 4.1) de longeron. La traverse (2) est constituée au moins dans la périphérie de ses parties absorption d'énergie (3, 3.1) d'acier TWIP, et est fermée au niveau de ses côtés extérieurs (9, 9.1) orientés dans la direction y pour former une coque.
PCT/EP2014/064128 2013-07-08 2014-07-03 Dispositif d'absorption des impacts destiné à un véhicule automobile WO2015003983A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013107179.1 2013-07-08
DE102013107179.1A DE102013107179B4 (de) 2013-07-08 2013-07-08 Stoßabsorptionsvorrichtung für ein Kraftfahrzeug

Publications (1)

Publication Number Publication Date
WO2015003983A1 true WO2015003983A1 (fr) 2015-01-15

Family

ID=51162767

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/064128 WO2015003983A1 (fr) 2013-07-08 2014-07-03 Dispositif d'absorption des impacts destiné à un véhicule automobile

Country Status (2)

Country Link
DE (1) DE102013107179B4 (fr)
WO (1) WO2015003983A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108749925A (zh) * 2018-05-28 2018-11-06 江铃汽车股份有限公司 一种具有碰撞缓冲功能的车架前端装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017201068A1 (de) * 2017-01-24 2018-07-26 Thyssenkrupp Ag Fahrzeugrahmen und Verwendung
JP7210104B2 (ja) * 2019-01-29 2023-01-23 ダイハツ工業株式会社 車両前部構造

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19715874A1 (de) 1997-04-16 1998-10-29 Mc Micro Compact Car Ag Vorbaustruktur für einen Personenkraftwagen
WO2006002531A1 (fr) * 2004-07-01 2006-01-12 Magna International Inc. Poutre de pare-chocs pour vehicule a moteur
US20070029824A1 (en) * 2005-08-05 2007-02-08 Aisin Seiki Kabushiki Kaisha Bumper reinforcement for vehicle
DE102006057993A1 (de) 2006-12-08 2008-06-12 Cosma Engineering Europe Ag Energieabsorptionsvorrichtung
DE102007038496A1 (de) 2007-08-14 2009-02-26 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung einer Stoßfängeranordnung eines Kraftfahrzeugs
DE102008026334A1 (de) 2008-05-31 2009-12-03 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Querträger einer Rahmenstruktur
KR20110061928A (ko) * 2009-12-02 2011-06-10 주식회사 포스코 자동차 범퍼 레일
DE102011008864A1 (de) * 2011-01-18 2012-08-23 Benteler Automobiltechnik Gmbh Verstärktes Stoßfängersystem in integrierter Bauweise
DE202012104117U1 (de) 2012-10-26 2012-11-19 Kirchhoff Automotive Deutschland Gmbh Stoßfängerquerträgerbaugruppe

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FR2481218A1 (fr) * 1980-04-25 1981-10-30 Peugeot Element d'extremite pour carrosserie de vehicule automobile
DE4437083C2 (de) * 1993-10-25 1996-10-17 Fuji Heavy Ind Ltd Modulträgerstruktur
DE19602186C1 (de) * 1996-01-23 1997-05-22 Porsche Ag Kraftfahrzeug mit einer bugseitigen Kühleranordnung
ITTO20001203A1 (it) * 2000-12-22 2002-06-22 Fiat Auto Spa Autoveicolo provvisto di una struttura per l'intubamento di un grupposcambiatore di calore nel vano motore.
DE102009009882B4 (de) * 2009-02-20 2022-10-13 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Frontenmodul für ein Kraftfahrzeug

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19715874A1 (de) 1997-04-16 1998-10-29 Mc Micro Compact Car Ag Vorbaustruktur für einen Personenkraftwagen
WO2006002531A1 (fr) * 2004-07-01 2006-01-12 Magna International Inc. Poutre de pare-chocs pour vehicule a moteur
US20070029824A1 (en) * 2005-08-05 2007-02-08 Aisin Seiki Kabushiki Kaisha Bumper reinforcement for vehicle
DE102006057993A1 (de) 2006-12-08 2008-06-12 Cosma Engineering Europe Ag Energieabsorptionsvorrichtung
DE102007038496A1 (de) 2007-08-14 2009-02-26 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung einer Stoßfängeranordnung eines Kraftfahrzeugs
DE102008026334A1 (de) 2008-05-31 2009-12-03 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Querträger einer Rahmenstruktur
KR20110061928A (ko) * 2009-12-02 2011-06-10 주식회사 포스코 자동차 범퍼 레일
DE102011008864A1 (de) * 2011-01-18 2012-08-23 Benteler Automobiltechnik Gmbh Verstärktes Stoßfängersystem in integrierter Bauweise
DE202012104117U1 (de) 2012-10-26 2012-11-19 Kirchhoff Automotive Deutschland Gmbh Stoßfängerquerträgerbaugruppe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108749925A (zh) * 2018-05-28 2018-11-06 江铃汽车股份有限公司 一种具有碰撞缓冲功能的车架前端装置

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Publication number Publication date
DE102013107179B4 (de) 2016-01-21
DE102013107179A1 (de) 2015-01-08

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