DE102008033503A1 - Longitudinal beam i.e. rear longitudinal beam, for passenger car, has flanges for connection with body components and/or chassis components, where beam is represented in form of single-piece hollow-cast aluminum casting component - Google Patents
Longitudinal beam i.e. rear longitudinal beam, for passenger car, has flanges for connection with body components and/or chassis components, where beam is represented in form of single-piece hollow-cast aluminum casting component Download PDFInfo
- Publication number
- DE102008033503A1 DE102008033503A1 DE200810033503 DE102008033503A DE102008033503A1 DE 102008033503 A1 DE102008033503 A1 DE 102008033503A1 DE 200810033503 DE200810033503 DE 200810033503 DE 102008033503 A DE102008033503 A DE 102008033503A DE 102008033503 A1 DE102008033503 A1 DE 102008033503A1
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- Germany
- Prior art keywords
- longitudinal
- side member
- casting
- components
- longitudinal beam
- 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.)
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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
- B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/087—Luggage compartments
Abstract
Description
Die Erfindung betrifft einen Längsträger eines Personenkraftwagens (Pkw) nach dem Oberbegriff des Anspruchs 1.The The invention relates to a side member of a passenger car (Car) according to the preamble of claim 1.
In modernen Personkraftwagen werden hohe Anforderungen an die Steifigkeit der Karosserie gestellt, wobei stets ein massives Bestreben darin besteht, das Gewicht der Karosserie zu verringern und dabei dennoch kostengünstig zu produzieren.In Modern passenger cars have high rigidity requirements the body, with a constant effort reduce the weight of the body while still cost to produce.
Vielfach wurden dabei gegossene Bauteilkomponenten in den Karosserierohbau eingesetzt, die einzelne Blechbauteile substituierten.frequently cast component components were used in the body shop used, the individual sheet metal components substituted.
So
ist beispielsweise in der
In anderen Konstruktionen werden beispielsweise Aluminiumdruckgussbauteile in komplex geformte Rohbau- oder Karosseriekomponenten integriert und dabei beispielsweise mit anderen Blechbauteilen durch teilweise aufwendige Fügeverfahren zur Rohbau- oder Karosseriekomponente zusammengefügt.In Other constructions include aluminum die-cast components integrated into complex shaped shell or body components and thereby, for example, with other sheet metal parts by partially complex joining process to shell or body component together.
Aufgabe der Erfindung ist es, einen Längsträger eines Pkws derart darzustellen, dass er gegenüber dem Stand der Technik ein geringeres Gewicht bei gleicher Festigkeit aufweist und dabei kostengünstiger herstellbar ist.task The invention is a side member of a Passenger cars so that he compared to the state of Technology has a lower weight with the same strength and is less expensive to produce.
Die Lösung der Aufgabe besteht in einem Längsträger mit den Merkmalen des Patentanspruch 1.The Solution to the problem consists in a side member with the features of claim 1.
Der erfindungsgemäße Längsträger zeichnet sich dadurch aus, dass er einteilig ausgestaltet ist und dabei in Form eines hohlgegossenen Kokillengussbauteils dargestellt ist. Prinzipiell sind in diesem Zusammenhang alle Verfahren zum Giessen hohler Bauteile geeignet, besonders vorteilhaft sind allerdings die Verfahren des Kokillenguss oder aber des Sandguss anwendbar, da dadurch ein erfindungsgemäßer Längsträger entsprechend wirtschaftlich herstellbar ist.Of the inventive longitudinal beams is characterized by the fact that it is designed in one piece and represented in the form of a hollow cast Kokillengussbauteils is. In principle, in this context, all methods for Cast hollow components suitable, but are particularly advantageous the methods of chill casting or sand casting apply, as a result, an inventive longitudinal beam can be produced economically.
In dieser Ausgestaltung weist er gegenüber einem herkömmlichen Längsträger in Blechschalenbauweise, der in der Regel aus etwa 20 Einzelbauteilen zusammengesetzt ist, die vornehmlich Stahl-Blechteile sind, ein geringeres Gewicht auf. Zudem kann für jedes Einzelbauteil, das sonst zur Darstellung des Längsträgers benötigt würde, ein vergleichsweise teures Umformwerkzeug eingespart werden und durch ein einziges vergleichsweise günstiges Giesswerkzeug für den Aluminiumguss ersetzt werden.In this embodiment, he has over a conventional Side members in sheet metal shell construction, which in the Usually composed of about 20 individual components, mainly steel sheet metal parts are a lesser weight on. In addition, for each Single component, otherwise for the representation of the longitudinal member would be needed, a relatively expensive forming tool be saved and by a single comparatively cheap Casting tool for aluminum casting to be replaced.
Neben der Einsparung der Werkzeugkosten entfallen auch die Fügeprozesse – in der Regel Schweißen, Stanznieten oder Kleben – für das Zusammenfügen der einzelnen Komponenten.Next The saving of tool costs also eliminates the joining processes - in usually welding, punching or gluing - for the assembly of the individual components.
Der Längsträger ist dabei bevorzugt stufenförmig ausgestaltet und weist in Einbaulage eine Komponente in Fahrzeuglängsrichtung und eine Komponente in Fahrzeughochrichtung auf. Somit ist auf vorteilhafte Art und Weise die Möglichkeit geschaffen, den gegossenen Längsträger einfach an Fahrwerkstrukturen wie beispielsweise Hinterachse, Fahrschemel, Dämpferbein oder aber Federbein anzubinden. Gleichzeitig besteht aber auch die Möglichkeit den Längsträger alternativ oder additiv an Karosseriestrukturen wie beispielsweise Dach, B- oder C-Säule anzubinden. Dabei weist der Längsträger bevorzugt Flansche auf, die zur Verbindung mit anderen Karosserie- und/oder Fahrwerkstrukturen dienen.Of the The longitudinal member is preferably stepped configured and has in installation position a component in the vehicle longitudinal direction and a component in the vehicle vertical direction. Thus is on advantageous Way the possibility created the cast Longitudinal beams easy on suspension structures such as For example, rear axle, subframe, strut or but to connect strut. At the same time there is also the possibility the side member alternative or additive to body structures such as roof, B or C-pillar. there the longitudinal member preferably has flanges, for connection to other body and / or chassis structures serve.
Die Verbindung des Längsträgers mit weiteren Strukturen ist grundsätzlich mittels sämtlicher Fügemittel und -verfahren möglich. Als besonders vorteilhaft haben sich dabei thermische Fügeverfahren wie Schweißen, insbesondere zur Verbindung mit Karosseriestrukturen, und mechanische Fügeverfahren wie Stanznieten, insbesondere zur Verbindung mit Karosseriestrukturen, oder Schraubverbindungen, insbesondere zur Verbindung mit Fahrwerkstrukturen und/oder Montageteilen, herausgestellt. Zu beachten ist in diesem Zusammenhang allerdings die spezielle Problematik der Kontaktkorrosion, welche aus einer Verbindung vom Aluminiumgusswerkstoff des Längsträgers mit einem Eisenwerkstoff, wie er größtenteils bei den meisten Fahrwerks-, Montage- oder Karosserieteilen Verwendung findet, resultiert. Hierzu ist das jeweilige Fügemittel bzw. – verfahren selbstverständlich entsprechend der zu verbindenden Teile und Werkstoffe auszulegen oder aber es sind entsprechende korrosionsschützende Maßnahmen, beispielsweise mittels geeigneter passiver Korrosionsschutzbeschichtungen, vorzusehen.The Connection of the longitudinal member with other structures is basically by means of all joining agents and method possible. To be particularly advantageous thermal joining processes such as welding, in particular for connection to body structures, and mechanical Joining methods such as punched rivets, in particular for connection with Body structures, or screw, in particular for Connection with chassis structures and / or assembly parts, exposed. To note in this context, however, the specific problem the contact corrosion, which consists of a compound of the aluminum casting material of the longitudinal member with a ferrous material, like him mostly in most suspension, assembly and or body parts, results. This is the respective joining agent or method of course according to the parts and materials to be connected or it is appropriate corrosion protection measures, for example by means of suitable passive corrosion protection coatings, provided.
Ferner ist ein Verfahren zur Herstellung eines Längsträgers nach Anspruch 8 Bestandteil der Erfindung, welches sich dadurch auszeichnet, dass der Längsträger mittels eines Verfahrens zum Aluminiumguss, insbesondere Sandguss oder Druckguss, als ein einteiliges Bauteil aus Aluminium gegossen wird, wobei zur Darstellung eines entsprechenden Hohlraums im Längsträger Gießkerne verwendet werden.Further is a method for producing a longitudinal member according to claim 8 part of the invention, which is characterized characterized in that the longitudinal member by means of a Process for aluminum casting, in particular sand casting or die casting, as a one-piece component is cast from aluminum, wherein for illustration a corresponding cavity in the longitudinal member Casting cores are used.
Weitere vorteilhafte Merkmale und Ausgestaltungsformen der Erfindung sind Bestandteil der folgenden Spezialbeschreibung und werden an Hand der Figuren näher erläutert.Further advantageous features and embodiments of the invention are Part of the following special description and will be on hand of the Figures explained in more detail.
Dabei zeigen:there demonstrate:
In
Unter Kokillenguss wird hierbei ein Gießverfahren verstanden, das im Gegensatz zum Druckguss in der Regel mit dem Druck der Schwerkraft, die auf eine metallische Schmelze wirkt, auskommt. Eine Kokille ist dabei eine metallische Gießform, in die entsprechende Gießkerne eingelegt werden, insbesondere Sandkerne, die einen entsprechenden Formhohlraum beim Abgießen des Bauteils darstellen.Under Chill casting is understood to mean a casting process, unlike die-casting usually with the pressure of gravity, which acts on a metallic melt, gets by. A mold is a metallic mold, in the corresponding Casting cores are inserted, in particular sand cores, the a corresponding mold cavity during the casting of the component represent.
Alternativ ist allerdings auch Sandguss bei der Herstellung des Längsträgers anwendbar, wobei die Schmelze im Wesentlichen ebenfalls unter Schwerkraft vergossen wird. Weiterhin ist der erfindungsgemäße Längsträger aber alternativ ebenso mit einem Druckgussverfahren herstellbar, insbesondere mittels Niederdruckkokillenguss. Beim Niederdruckkokillenguss erfolgt die Formfüllung des Längsträgers entgegen der Schwerkraft, d. h. von unten, unter leichtem Überdruck.alternative However, sand casting is also involved in the production of the side member applicable, wherein the melt is also substantially under gravity is shed. Furthermore, the inventive But side members alternatively also with a die casting process producible, in particular by means of low-pressure chill casting. At the Low pressure chill casting is the mold filling of the longitudinal member against gravity, d. H. from below, under slight overpressure.
Auf Grund der Herstellung des Längsträgers mittels Kokillenguss oder der zuvor beschriebenen Alternativen sind die Werkzeugkosten als gering anzusehen, wodurch die Wirtschaftlichkeit des Längsträgers wesentlich gesteigert wird. Weiterhin lässt sich durch eine entsprechende Wärmebehandlung des Längsträgers eine höhere Bauteilfestigkeit erzielen, wodurch die Vorteile des gegossenen Längsträgers nochmals gesteigert werden.On Reason for producing the longitudinal member by means of Chill casting or the alternatives described above are the To consider tooling costs as low, thereby reducing cost-effectiveness of the longitudinal member is significantly increased. Farther can be achieved by an appropriate heat treatment of the Longitudinal member a higher component strength Achieve, thereby, the advantages of the cast longitudinal member be increased again.
Der
in
An
einem vorderen Ende
Der
Längsträger
In
- 22
- Längsträgerlongitudinal beams
- 44
- Blechteilsheet metal part
- 66
- Blechteilsheet metal part
- 88th
- Blechteilsheet metal part
- 1010
- Blechteilsheet metal part
- 1111
- Blechteilsheet metal part
- 1212
- Blechteilsheet metal part
- 1414
- Blechteilsheet metal part
- 1616
- Blechteilsheet metal part
- 1818
- Stufe im Längsträgerstep in the side member
- 2020
- Flanschflange
- 2121
- vorderes Endefront The End
- 2222
- Flanschflange
- 2424
- FahrzeuglängsrichtungVehicle longitudinal direction
- 2626
- FahrzeughochrichtungVehicle vertical direction
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 19922800 A1 [0004] DE 19922800 A1 [0004]
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810033503 DE102008033503A1 (en) | 2008-07-16 | 2008-07-16 | Longitudinal beam i.e. rear longitudinal beam, for passenger car, has flanges for connection with body components and/or chassis components, where beam is represented in form of single-piece hollow-cast aluminum casting component |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810033503 DE102008033503A1 (en) | 2008-07-16 | 2008-07-16 | Longitudinal beam i.e. rear longitudinal beam, for passenger car, has flanges for connection with body components and/or chassis components, where beam is represented in form of single-piece hollow-cast aluminum casting component |
Publications (1)
Publication Number | Publication Date |
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DE102008033503A1 true DE102008033503A1 (en) | 2010-01-21 |
Family
ID=41427189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE200810033503 Withdrawn DE102008033503A1 (en) | 2008-07-16 | 2008-07-16 | Longitudinal beam i.e. rear longitudinal beam, for passenger car, has flanges for connection with body components and/or chassis components, where beam is represented in form of single-piece hollow-cast aluminum casting component |
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DE (1) | DE102008033503A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010008615A1 (en) * | 2010-02-19 | 2011-08-25 | EDAG GmbH & Co. KGaA, 36039 | Structure node e.g. left and right front structure node, for body of passenger car, has wall structure comprising terminals for carriers of body, where node is cast with core tool for forming cavity |
DE102012024514A1 (en) | 2012-12-14 | 2013-07-18 | Daimler Ag | Longitudinal carrier for passenger car body, is formed as single-piece die casting component and as open profile, where longitudinal carrier has supporting surface for damping element and another supporting surface for spring element |
DE102013002701A1 (en) | 2013-02-16 | 2014-03-20 | Daimler Ag | Component assembly of motor vehicle for forming bearing structure, has several ribs are provided with structural components and are aligned in two directions |
CN114179911A (en) * | 2021-11-17 | 2022-03-15 | 武汉路特斯汽车有限公司 | Rear longitudinal beam, rear longitudinal beam structure and vehicle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19922800A1 (en) | 1998-05-20 | 1999-11-25 | Bayerische Motoren Werke Ag | Manufacture system for sub-frame for motor vehicle incorporates frame junction point made of cast light metal and includes fabricated lateral and longitudinal frame elements |
-
2008
- 2008-07-16 DE DE200810033503 patent/DE102008033503A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19922800A1 (en) | 1998-05-20 | 1999-11-25 | Bayerische Motoren Werke Ag | Manufacture system for sub-frame for motor vehicle incorporates frame junction point made of cast light metal and includes fabricated lateral and longitudinal frame elements |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010008615A1 (en) * | 2010-02-19 | 2011-08-25 | EDAG GmbH & Co. KGaA, 36039 | Structure node e.g. left and right front structure node, for body of passenger car, has wall structure comprising terminals for carriers of body, where node is cast with core tool for forming cavity |
DE102010008615B4 (en) | 2010-02-19 | 2018-04-26 | Edag Engineering Gmbh | Structure node for a body of a vehicle |
DE102012024514A1 (en) | 2012-12-14 | 2013-07-18 | Daimler Ag | Longitudinal carrier for passenger car body, is formed as single-piece die casting component and as open profile, where longitudinal carrier has supporting surface for damping element and another supporting surface for spring element |
DE102013002701A1 (en) | 2013-02-16 | 2014-03-20 | Daimler Ag | Component assembly of motor vehicle for forming bearing structure, has several ribs are provided with structural components and are aligned in two directions |
CN114179911A (en) * | 2021-11-17 | 2022-03-15 | 武汉路特斯汽车有限公司 | Rear longitudinal beam, rear longitudinal beam structure and vehicle |
CN114179911B (en) * | 2021-11-17 | 2023-12-22 | 武汉路特斯汽车有限公司 | Rear longitudinal beam, rear longitudinal beam structure and vehicle |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140201 |