DE102009040861A1 - Cast part i.e. body part, for building body of vehicle, has elastic element attached on part of surface by adhesive layer and provided for holding cast part fragments during breaking of part, where elastic element limits deformation of part - Google Patents

Cast part i.e. body part, for building body of vehicle, has elastic element attached on part of surface by adhesive layer and provided for holding cast part fragments during breaking of part, where elastic element limits deformation of part Download PDF

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Publication number
DE102009040861A1
DE102009040861A1 DE102009040861A DE102009040861A DE102009040861A1 DE 102009040861 A1 DE102009040861 A1 DE 102009040861A1 DE 102009040861 A DE102009040861 A DE 102009040861A DE 102009040861 A DE102009040861 A DE 102009040861A DE 102009040861 A1 DE102009040861 A1 DE 102009040861A1
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Prior art keywords
elastic element
casting
part according
cast
cast part
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DE102009040861A
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German (de)
Inventor
Jean-Marc Segaud
Wolfgang Dr. Bluemlhuber
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Priority to DE102009040861A priority Critical patent/DE102009040861A1/en
Publication of DE102009040861A1 publication Critical patent/DE102009040861A1/en
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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
    • B62D29/005—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material preformed metal and synthetic material elements being joined together, e.g. by adhesives
    • 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
    • B62D29/004—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material the metal being over-moulded by the synthetic material, e.g. in a mould

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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 part has an elastic element attached on a part of a surface by an adhesive layer and provided for holding cast part fragments during breaking of the part, where the elastic element limits deformation of the part by reducing deformation energy. The elastic element is formed as a laminar element and made of fiber-reinforced plastic material such as carbon fibers, glass fibers, aramide fibers, fibers made of steel and/or metal alloy reinforcement fibers. The elastic element is resistant to pressure and comprises elastomer and/or plastic foam.

Description

Die vorliegende Erfindung betrifft ein Gussteil, insbesondere für Fahrzeuge, gemäß dem Oberbegriff des Patentanspruches 1.The present invention relates to a casting, in particular for vehicles, according to the preamble of claim 1.

Im modernen Karosseriebau werden bislang verwendete, großflächige, dünnwandige Schweißkonstruktionen bisweilen durch „integrative Gussteile” aus Aluminium bzw. Magnesium substituiert. Gussstrukturteile können in Sand-, Kokillen-, Lost Foam- oder Druckguss-Verfahren hergestellt werden. Zur Verbesserung ihrer mechanischen Eigenschaften werden Gussteile üblicherweise einer Wärmebehandlung unterzogen.In modern bodywork, previously used, large-area, thin-walled welded constructions are sometimes substituted by "integrative castings" made of aluminum or magnesium. Cast structural parts can be made in sand, mold, lost foam or die casting processes. To improve their mechanical properties castings are usually subjected to a heat treatment.

Da Gussteile bei hohen dynamischen Beanspruchungen und insbesondere bei starken Deformationen, wie sie bei einem Unfall auftreten können, brechen können, sind sie im Karosseriebau nur in begrenztem Umfang einsetzbar. Aus Gründen der passiven Sicherheit muss nämlich ausgeschlossen werden, dass bei einem Unfall Gussteilbruchstücke in die Fahrgastzelle eindringen.Since castings can break under high dynamic loads and in particular with strong deformations, as they can occur in an accident, they can be used in body construction only to a limited extent. For reasons of passive safety namely must be ruled out that penetrate castings fragments in an accident in the passenger compartment.

Aufgabe der Erfindung ist es, ein Gussteil, insbesondere für den Fahrzeugkarosseriebau zu schaffen, das im Vergleich zu herkömmlichen Gussteilen eine höhere passive Sicherheit und damit ein breiteres Anwendungsspektrum bietet.The object of the invention is to provide a casting, in particular for the vehicle body construction, which offers a higher passive safety and thus a wider range of applications compared to conventional castings.

Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.This object is solved by the features of claim 1. Advantageous embodiments and further developments of the invention can be found in the dependent claims.

Das Grundprinzip der Erfindung besteht darin, zumindest auf einen Teil der Oberfläche des Gussteils ein ”elastisches Element” aufzubringen.The basic principle of the invention is to apply an "elastic element" to at least part of the surface of the casting.

Der Begriff ”elastisches Element” ist äußerst breit auszulegen, in dem Sinn, dass das elastische Element dazu vorgesehen ist, bei einem Bruch des Gussteils einzelne Gussteilbruchstücke zumindest in gewissem Umfang zusammenzuhalten, Deformationsenergie zu absorbieren und somit die Deformation des Gussteils zu begrenzen. Konkret geht es darum, zu verhindern, dass bei einem Bruch des Gussteils einzelne Gussteilbruchstücke ”unkontrolliert” fortgeschleudert werden. Insbesondere gilt es zu verhindern, dass Bruchstücke des Gussteils unkontrolliert in die Fahrgastzelle eindringen und Insassen gefährden.The term "elastic element" is to be construed extremely broadly, in the sense that the elastic element is intended to at least to a certain extent hold together individual casting fragments in the event of breakage of the casting, to absorb deformation energy and thus to limit the deformation of the casting. Specifically, it is important to prevent individual casting fragments from being ejected "uncontrollably" when the casting is broken. In particular, it is necessary to prevent fragments of the casting from entering the passenger compartment in an uncontrolled manner and jeopardizing occupants.

Bei dem elastischen Element kann es sich um ein „flächiges Element” handeln. Der Begriff ”flächiges Element” ist so zu verstehen, dass die Länge und die Breite des elastischen Elements wesentlich größer, insbesondere um ein Vielfaches größer ist, als seine Dicke. Das elastische Element kann beispielsweise die Form eines Bandes, einer Folie, eines Lappens, einer Matte o. ä. aufweisen.The elastic element may be a "planar element". The term "sheet-like element" is to be understood as meaning that the length and the width of the elastic element are substantially greater, in particular many times greater, than its thickness. The elastic element may, for example, have the shape of a band, a foil, a flap, a mat or the like.

Das elastische Element kann aus einem faserverstärkten Kunststoffmaterial hergestellt sein. Als Verstärkungsfasern können z. B. Kohlefasern, Glasfasern, Aramidfasern oder auch Fasern aus Stahl oder einem Metall eingesetzt werden.The elastic member may be made of a fiber reinforced plastic material. As reinforcing fibers, for. As carbon fibers, glass fibers, aramid fibers or fibers of steel or a metal can be used.

Alternativ oder ergänzend dazu kann das elastische Element druckelastisch sein, vergleichbar mit einer Dämmmatte. Es kann eine Dicke von mehreren Millimetern aufweisen und zumindest teilweise oder ganz aus einem Elastomer und/oder aus einem Kunststoffschaum bestehen. Derartige ”weiche elastische Elemente” kommen insbesondere für Gussteile in Betracht, die in Karosseriebereichen eingesetzt werden, bei denen bei einem Unfall die Gefahr besteht, dass der Insasse z. B. mit dem Kopf oder mit einem anderen Körperteil auf das betreffende Karosserieteil aufschlägt. Das elastische Element kann dazu beitragen, den Aufprall abzuschwächen und Verletzungen zu vermeiden; es hat in diesem Fall also eine unmittelbare passive Sicherheitsfunktion.Alternatively or additionally, the elastic element may be pressure-elastic, comparable to an insulating mat. It may have a thickness of several millimeters and consist at least partially or entirely of an elastomer and / or of a plastic foam. Such "soft elastic elements" come in particular for castings into consideration, which are used in body areas in which in an accident there is a risk that the occupant z. B. hits the body part in question with the head or with another body part. The elastic element can help to mitigate the impact and avoid injury; it has an immediate passive safety function in this case.

Zusätzlich dazu kann das elastische Element auch eine Korrosionsschutzfunktion erfüllen und/oder als Dämmelement zur Körperschalldämmung eingesetzt werden.In addition, the elastic element can also fulfill a corrosion protection function and / or be used as an insulating element for structure-borne sound insulation.

Je nach Gestaltung des elastischen Elements kann es auch unmittelbar als Dekorelement für den Fahrgastraum eingesetzt werden. Um den Designanforderungen moderner Fahrzeuginnenraumdesigns gerecht zu werden kann es beispielsweise mit einer optisch und haptisch ansprechenden bzw. Oberfläche versehen sein, z. B. mit einer Maßerung, Riffelung, Gummierung o. ä. Gegebenenfalls kann sogar auf bislang übliche Abdeckteile bzw. Blenden verzichtet werden, was Kostenreduzierungspotentiale erschließt und Gewichtseinsparungen ermöglicht.Depending on the design of the elastic element, it can also be used directly as a decorative element for the passenger compartment. In order to meet the design requirements of modern vehicle interior design, it can be provided, for example, with an optically and haptically appealing or surface, for. If necessary, can even be dispensed with hitherto conventional cover parts or panels, which opens up cost reduction potentials and allows weight savings.

Nach einer Weiterbildung der Erfindung ist das elastische Element flächig durch eine Klebstoffschicht mit der Oberfläche des Gussteils verbunden. Bei dem elastischen Element kann es sich beispielsweise um ein klebebandartiges Element bzw. um ein elastisches Element, ähnlich einer Klebefolie, handeln.According to a development of the invention, the elastic element is connected in a planar manner by an adhesive layer to the surface of the casting. The elastic element may, for example, be a tape-like element or an elastic element, similar to an adhesive film.

Claims (10)

Gussteil, insbesondere Karosserieteil für Fahrzeuge, dadurch gekennzeichnet, dass zumindest auf einen Teil der Oberfläche des Gussteils ein elastisches Element aufgebracht ist.Casting, in particular body part for vehicles, characterized in that at least on a part of the surface of the casting, an elastic element is applied. Gussteil nach Anspruch 1, dadurch gekennzeichnet, dass das elastische Element dazu vorgesehen ist, bei einem Bruch des Gussteils einzelne Gussteilbruchstücke zumindest in gewissem Umfang zusammenzuhalten und durch den Abbau von Deformationsenergie die Deformation des Gussteils zu begrenzen.Cast part according to claim 1, characterized in that the elastic element is intended to individual in a fraction of the casting To hold castings fragments at least to some extent and to limit the deformation of the casting by reducing deformation energy. Gussteil nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das elastische Element ein flächiges Element ist.Casting part according to claim 1 or 2, characterized in that the elastic element is a planar element. Gussteil nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das elastische Element aus einem faserverstärkten Kunststoffmaterial besteht.Cast part according to one of claims 1 to 3, characterized in that the elastic element consists of a fiber-reinforced plastic material. Gussteil nach Anspruch 4, dadurch gekennzeichnet, dass es sich bei den Verstärkungsfasern um Kohlefasern, Glasfasern, Aramidfasern oder Fasern aus Stahl oder einem anderen Metall bzw. einer Metalllegierung handelt.Casting part according to claim 4, characterized in that the reinforcing fibers are carbon fibers, glass fibers, aramid fibers or fibers made of steel or another metal or a metal alloy. Gussteil nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das elastische Element durch eine Klebstoffschicht mit der Oberfläche des Gussteils verbunden ist.Cast part according to one of claims 1 to 5, characterized in that the elastic element is connected by an adhesive layer with the surface of the casting. Gussteil nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass es sich bei dem elastischen Element um ein klebebandartiges Element bzw. um ein Element in der Art einer Klebefolie handelt.Cast part according to one of Claims 1 to 6, characterized in that the elastic element is a tape-like element or an element in the form of an adhesive film. Gussteil nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das elastische Element druckelastisch ist.Cast part according to one of claims 1 to 7, characterized in that the elastic element is pressure-elastic. Gussteil nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das elastische Element eine Dicke von mehreren Millimetern aufweist.Cast part according to one of claims 1 to 8, characterized in that the elastic element has a thickness of several millimeters. Gussteil nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das elastische Element zumindest teilweise aus einem Elastomer und/oder aus einem Kunststoffschaum besteht.Cast part according to one of claims 1 to 9, characterized in that the elastic element consists at least partially of an elastomer and / or of a plastic foam.
DE102009040861A 2009-09-09 2009-09-09 Cast part i.e. body part, for building body of vehicle, has elastic element attached on part of surface by adhesive layer and provided for holding cast part fragments during breaking of part, where elastic element limits deformation of part Withdrawn DE102009040861A1 (en)

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DE102009040861A DE102009040861A1 (en) 2009-09-09 2009-09-09 Cast part i.e. body part, for building body of vehicle, has elastic element attached on part of surface by adhesive layer and provided for holding cast part fragments during breaking of part, where elastic element limits deformation of part

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DE102009040861A DE102009040861A1 (en) 2009-09-09 2009-09-09 Cast part i.e. body part, for building body of vehicle, has elastic element attached on part of surface by adhesive layer and provided for holding cast part fragments during breaking of part, where elastic element limits deformation of part

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011014852A1 (en) * 2011-03-24 2012-01-12 Daimler Ag Motor gear box carrier for use in motor car, has base part whose upper section is made of polymer or polymer composite material, where gear box carrier is dimensioned, so that section breaks while part is deformed during accident
CN105026248A (en) * 2013-03-01 2015-11-04 标致雪铁龙集团 Rear loading floor panel made of composite material for a motor vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3731526A1 (en) * 1986-09-19 1988-04-07 Toyoda Gosei Kk SOFT RESIN PRODUCT
DE19847612A1 (en) * 1998-10-15 2000-04-20 Volkswagen Ag Body component
EP1340668A2 (en) * 2002-02-28 2003-09-03 Bayer Ag Lightweight structural element with outside ribbing
DE102007006493A1 (en) * 2007-02-09 2008-08-14 Lanxess Deutschland Gmbh Lightweight component in hybrid construction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3731526A1 (en) * 1986-09-19 1988-04-07 Toyoda Gosei Kk SOFT RESIN PRODUCT
DE19847612A1 (en) * 1998-10-15 2000-04-20 Volkswagen Ag Body component
EP1340668A2 (en) * 2002-02-28 2003-09-03 Bayer Ag Lightweight structural element with outside ribbing
DE102007006493A1 (en) * 2007-02-09 2008-08-14 Lanxess Deutschland Gmbh Lightweight component in hybrid construction

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011014852A1 (en) * 2011-03-24 2012-01-12 Daimler Ag Motor gear box carrier for use in motor car, has base part whose upper section is made of polymer or polymer composite material, where gear box carrier is dimensioned, so that section breaks while part is deformed during accident
DE102011014852A8 (en) * 2011-03-24 2012-03-22 Daimler Ag Motor gear carrier
DE102011014852B4 (en) * 2011-03-24 2014-06-12 Daimler Ag Motor gear carrier
CN105026248A (en) * 2013-03-01 2015-11-04 标致雪铁龙集团 Rear loading floor panel made of composite material for a motor vehicle

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