EP1828566A1 - Shielding element for motor vehicles - Google Patents

Shielding element for motor vehicles

Info

Publication number
EP1828566A1
EP1828566A1 EP05809172A EP05809172A EP1828566A1 EP 1828566 A1 EP1828566 A1 EP 1828566A1 EP 05809172 A EP05809172 A EP 05809172A EP 05809172 A EP05809172 A EP 05809172A EP 1828566 A1 EP1828566 A1 EP 1828566A1
Authority
EP
European Patent Office
Prior art keywords
shielding element
metallic layers
element according
layers
consist
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.)
Withdrawn
Application number
EP05809172A
Other languages
German (de)
French (fr)
Inventor
Ralf Krus
Bernard Siegfried
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Federal Mogul Sealing Systems GmbH
Original Assignee
Federal Mogul Sealing Systems 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 Federal Mogul Sealing Systems GmbH filed Critical Federal Mogul Sealing Systems GmbH
Publication of EP1828566A1 publication Critical patent/EP1828566A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0869—Insulating elements, e.g. for sound insulation for protecting heat sensitive parts, e.g. electronic components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Definitions

  • the invention relates to a shielding for motor vehicles.
  • EP-A O 806 555 a heat shield, in particular for shielding exhaust leading parts is described in motor vehicles, with at least one arranged between two cover layers metallic Dämmlage, the selbige is formed by a structured by means of a plurality of perforations sheet metal part or a film.
  • the cover layers are formed as unstructured sheet metal parts.
  • the penetrations of the insulating layer form piercing burrs on opposite sides of the insulating layer, wherein the insulating layer is pressed with the cover layers.
  • the piercing burrs can be slotted, serrated or tongue-shaped and bent outwards.
  • the burrs form punctiform thermal bridges with the cover layers, over which only a very small heat exchange takes place between the hotter inner cover layer and the outer cover layer.
  • a heat shield for shielding parts leading to exhaust gas on a motor vehicle relative to the underbody of the motor vehicle has become known, with a front plate forming the shield support plate made of aluminum, which carries an insulating layer on its back.
  • the insulating layer has an insert made of a regular mesh and at least one aluminum cover foil, wherein the insert is pleated with a corrugation.
  • the invention has for its object to provide a shielding for motor vehicles, which is simple in construction, manufactured inexpensively and without manual manual operations and easy to install and also allows good heat and / or sound insulation.
  • a shielding element for motor vehicles consisting of at least two spaced, mutually operatively connected metallic layers about the same thickness of material between which at least one layer of an expanded metal is introduced under a defined bias.
  • the shielding element can be used here as a heat shield or as a soundproofing element in the area of a motor vehicle.
  • the shielding element consists of several layers, which result in a sandwich construction with air cushions.
  • the two outer layers are made of aluminum, stainless steel or Al-coated steels.
  • the inner layer provided between individual layers consists of an expanded metal.
  • the at least three layers described can simultaneously be unwound from each other by superimposed coils and moved directly without additional operation in a tool for further processing. In this case, it is possible to vary the distance and thus the amount of air cushion between the at least two outer layers by using differently thick expanded metal. As a result of the subsequent assembly and connection process of the layers, the same are connected to one another under prestress, so that rattling of the expanded metal between the layers is prevented.
  • the expanded metal between the outer layers serves as a spacer and prevents compression of the outer layers and thus the reduction of the predetermined air cushion.
  • the distance between the outer layers can be adjusted.
  • Figure 1 shows a cross section through a trained as a heat shield shielding
  • Figure 2 top view of an expanded metal.
  • Figure 1 shows a schematic diagram in cross-section of a trained in this example as a heat shield shielding element 1, as it can be used for example in the exhaust system of a motor vehicle.
  • the shielding element 1 includes two outer layers 2, 3, which in this example are made of stainless steel and should have the same material thickness d. Between the outer layers 2,3, a layer extends
  • an expanded metal 4 which is positioned under defined prestress between the outer layers 2, 3 of the shielding element 1.
  • the individual chambers 5 of the expanded metal 4 form between the mutually facing smooth end faces 6,7 of the outer layers 2,3 air cushion, wherein the amount of air cushion can be predetermined by varying the distance h of the two end faces 6,7 depending on the application.
  • the three layers 2, 3, 4 provided in this example can simultaneously be wound on one another by coils arranged one above the other and be advanced directly, without additional operation, into a downstream tool for further processing.
  • the same are connected to one another under defined prestress, so that rattling of the expanded metal 4 between the layers 2, 3 is prevented.
  • the expanded metal 4 serves as a spacer between the two outer layers 2, 3 and prevents compression of the outer layers 2, 3 and thus the reduction of the air cushion provided in the chambers 5.
  • the end regions 8, 9 of the outer layers 2, 3 should be connected to one another by crimping, wherein alternative connection methods, such as, for example, clinching, are also conceivable here.
  • Figure 2 shows a plan view of the expanded metal 4 used in Figure 1. Visible are the lattice-shaped structure of the expanded metal 4, wherein a plurality of meshes 10 are formed.
  • the meshes 10 are formed by webs 11, 11 nodes 12 are formed at the intersection between four abutting webs.
  • the expanded metal 4 has a predetermined height h, as it is addressed in Figure 1. By varying the mesh size, the mesh length, the web thickness and the web width a variety of technical requirements in the field of a motor vehicle can be operated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Laminated Bodies (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The invention relates to a shielding element for motor vehicles, consisting of at least two metallic layers which are arranged at a distance from each other and which are actively connected to each other, have approximately equal material thickness, between which the at least one layer of an extended metal is introduced with a predefined pretension.

Description

Abschirmelement für KraftfahrzeugeShielding element for motor vehicles
Beschreibungdescription
Die Erfindung betrifft ein Abschirmelement für Kraftfahrzeuge.The invention relates to a shielding for motor vehicles.
In der EP-A O 806 555 wird ein Hitzeschild, insbesondere zur Abschirmung Abgas führender Teile in Kraftfahrzeugen beschrieben, mit mindestens einer zwischen zwei Decklagen angeordneten metallischen Dämmlage, wobei selbige von einem mittels einer Vielzahl von Durchstoßungen strukturierten Blechteil oder einer Folie gebildet ist. Die Decklagen sind als unstrukturierte Blechteile ausgebildet. Die Durchstoßungen der Dämmlage bilden Durchstoßungsgrate auf gegenüberliegenden Seiten der Dämmlage, wobei die Dämmlage mit den Decklagen verpresst ist. Die Durchstoßungsgrate können geschlitzt, zacken- oder zungenformig ausgebildet und nach außen abgebogen sein. Die Grate bilden hierbei punktförmige Wärmebrücken mit den Decklagen, über die nur ein sehr geringer Wärmeaustausch zwischen der heißeren inneren Decklage und der äußeren Decklage erfolgt.In EP-A O 806 555 a heat shield, in particular for shielding exhaust leading parts is described in motor vehicles, with at least one arranged between two cover layers metallic Dämmlage, the selbige is formed by a structured by means of a plurality of perforations sheet metal part or a film. The cover layers are formed as unstructured sheet metal parts. The penetrations of the insulating layer form piercing burrs on opposite sides of the insulating layer, wherein the insulating layer is pressed with the cover layers. The piercing burrs can be slotted, serrated or tongue-shaped and bent outwards. The burrs form punctiform thermal bridges with the cover layers, over which only a very small heat exchange takes place between the hotter inner cover layer and the outer cover layer.
Durch das DE-Gbm 91 07 484 ist ein Hitzeschild zur Abschirmung von Abgas führenden Teilen an einem Kraftfahrzeug gegenüber der Bodengruppe des Kraftfahrzeugs bekannt geworden, mit einem die Schildvorderseite bildenden Trägerblech aus Aluminium, das an seiner Rückseite eine Isolierschicht trägt. Die Isolierschicht weist eine Einlage aus einem regelmäßigen Maschenwerk und mindestens eine Aluminiumdeckfolie auf, wobei die Einlage mit einer Wellung plissiert ist.By DE-Gbm 91 07 484 a heat shield for shielding parts leading to exhaust gas on a motor vehicle relative to the underbody of the motor vehicle has become known, with a front plate forming the shield support plate made of aluminum, which carries an insulating layer on its back. The insulating layer has an insert made of a regular mesh and at least one aluminum cover foil, wherein the insert is pleated with a corrugation.
Der Erfindung liegt die Aufgabe zugrunde, ein Abschirmelement für Kraftfahrzeuge bereitzustellen, das einfach im Aufbau ist, kostengünstig und ohne manuelle Handarbeitsgänge hergestellt sowie einfach montiert werden kann und darüber hinaus eine gute Wärme- und/oder Schallisolation ermöglicht. Diese Aufgabe wird gelöst durch ein Abschirmelement für Kraftfahrzeuge, bestehend aus mindestens zwei beabstandeten, miteinander in Wirkverbindung stehenden metallischen Lagen etwa gleicher Materialdicke, zwischen denen mindestens eine Lage eines Streckmetalls unter definierter Vorspannung eingebracht ist.The invention has for its object to provide a shielding for motor vehicles, which is simple in construction, manufactured inexpensively and without manual manual operations and easy to install and also allows good heat and / or sound insulation. This object is achieved by a shielding element for motor vehicles, consisting of at least two spaced, mutually operatively connected metallic layers about the same thickness of material between which at least one layer of an expanded metal is introduced under a defined bias.
Vorteilhafte Weiterbildungen des erfindungsgemäßen Abschirmelementes sind den Unteransprüchen zu entnehmen.Advantageous developments of the shielding element according to the invention can be found in the dependent claims.
Das Abschirmelement kann hierbei als Hitzeschild oder als Schallschutzelement im Bereich eines Kraftfahrzeuges eingesetzt werden. Das Abschirmelement besteht aus mehreren Lagen, die einen Sandwichaufbau mit Luftpolstern ergeben. Die beiden äußeren Lagen bestehen aus Aluminium, Edelstahl oder AI-beschichteten Stählen. Die zwischen einzelnen Lagen vorgesehene innere Lage besteht aus einem Streckmetall. Die mindestens drei beschriebenen Lagen können gleichzeitig von übereinander angeordneten Coils aufeinander abgewickelt und direkt ohne Zusatzarbeitsgang in ein Werkzeug zur Weiterverarbeitung bewegt werden. Hierbei ist es möglich, den Abstand und somit die Luftpolstermenge zwischen den zumindest beiden äußeren Lagen durch den Einsatz von unterschiedlich dickem Streckmetall zu variieren. Durch den in Folge ablaufenden Montage- und Verbindungsprozess der Lagen werden selbige unter Vorspannung miteinander verbunden, so dass ein Klappern des Streckmetalls zwischen den Lagen verhindert wird.The shielding element can be used here as a heat shield or as a soundproofing element in the area of a motor vehicle. The shielding element consists of several layers, which result in a sandwich construction with air cushions. The two outer layers are made of aluminum, stainless steel or Al-coated steels. The inner layer provided between individual layers consists of an expanded metal. The at least three layers described can simultaneously be unwound from each other by superimposed coils and moved directly without additional operation in a tool for further processing. In this case, it is possible to vary the distance and thus the amount of air cushion between the at least two outer layers by using differently thick expanded metal. As a result of the subsequent assembly and connection process of the layers, the same are connected to one another under prestress, so that rattling of the expanded metal between the layers is prevented.
Bei einer nachfolgenden, bedarfsweise dreidimensionalen Formgebung des beschriebenen Mehrlagen-Sandwiches, dient das Streckmetall zwischen den äußeren Lagen als Abstandshalter und verhindert ein Zusammenpressen der äußeren Lagen und somit die Reduzierung der vorgegebenen Luftpolster. Durch unterschiedliche Dicken der zwischen den äußeren Lagen vorgesehenen mittleren Streckmetalllage kann der Abstand zwischen den äußeren Lagen eingestellt werden. Somit ergibt sich die Möglichkeit, die Isolationswirkung des Abschirmelementes durch Vergrößerung des Außenlagenabstandes zu erhöhen, indem auch die Größe der Luftpolster erhöht wird.In a subsequent, if necessary, three-dimensional shaping of the multilayer sandwich described, the expanded metal between the outer layers serves as a spacer and prevents compression of the outer layers and thus the reduction of the predetermined air cushion. By varying the thickness of the intermediate layer of expanded metal between the outer layers, the distance between the outer layers can be adjusted. Thus, there is the possibility of increasing the insulating effect of the shielding element by increasing the outer layer spacing by also increasing the size of the air cushion.
Durch Einsatz von Aluminium oder beschichtetem Stahl für den Sandwichaufbau stellt sich als weiterer Vorteil eine optimale Gesamtrecyclingfähigkeit ein.By using aluminum or coated steel for the sandwich construction, an additional advantage is an optimal overall recycling capability.
Der Erfϊndungsgegenstand ist anhand eines Ausfuhrungsbeispiels in der Zeichnung dargestellt und wird wie folgt beschrieben. Es zeigen:The Erfϊndungsgegenstand is illustrated by an exemplary embodiment in the drawing and will be described as follows. Show it:
Figur 1 Querschnitt durch ein als Hitzeschild ausgebildetes Abschirmelement;Figure 1 shows a cross section through a trained as a heat shield shielding;
Figur 2 Draufsicht auf ein Streckmetall.Figure 2 top view of an expanded metal.
Figur 1 zeigt als Prinzipskizze im Querschnitt ein in diesem Beispiel als Hitzeschild ausgebildetes Abschirmelement 1, wie es beispielsweise im Abgasstrang eines Kraftfahrzeuges eingesetzt werden kann. Das Abschirmelement 1 beinhaltet zwei äußere Lagen 2,3, die in diesem Beispiel aus Edelstahl bestehen und gleiche Materialdicke d haben sollen. Zwischen den äußeren Lagen 2,3 erstreckt sich eine LageFigure 1 shows a schematic diagram in cross-section of a trained in this example as a heat shield shielding element 1, as it can be used for example in the exhaust system of a motor vehicle. The shielding element 1 includes two outer layers 2, 3, which in this example are made of stainless steel and should have the same material thickness d. Between the outer layers 2,3, a layer extends
eines Streckmetalls 4, das unter definierter Vorspannung zwischen den äußeren Lagen 2,3 des Abschirmelementes 1 positioniert ist. Die einzelnen Kammern 5 des Streckmetalls 4 bilden zwischen den einander zugewandeten glatten Stirnflächen 6,7 der äußeren Lagen 2,3 Luftpolster, wobei die Luftpolstermenge durch Variation des Abstandes h der beiden Stirnflächen 6,7 in Abhängigkeit vom Einsatzfall vorgebbar ist. Alternativ besteht die Möglichkeit, die äußeren Lagen 2,3 aus Aluminiumblechen oder aus mit Aluminium beschichteten Stahlblechen zu erzeugen. Die in diesem Beispiel vorgesehenen drei Lagen 2,3,4 können gleichzeitig von übereinander angeordneten Coils aufeinander abgewickelt werden und direkt, ohne Zusatzarbeitsgang in ein nachgeschaltetes Werkzeug zur Weiterverarbeitung vorgeschoben werden. Durch den in Folge ablaufenden Montage- und Verbindungsprozess der Lagen 2,3,4 werden selbige unter definierter Vorspannung miteinander verbunden, so dass ein Klappern des Streckmetalls 4 zwischen den Lagen 2,3 verhindert wird. Bei einer sich anschließenden nachfolgenden dreidimensionalen Formgebung des beschriebenen Mehrlagen- Sandwiches dient das Streckmetall 4 zwischen den beiden äußeren Lagen 2,3 als Abstandshalter und verhindert ein Zusammenpressen der äußeren Lagen 2,3 und somit die Reduzierung der in den Kammern 5 vorgesehenen Luftpolster. In diesem Beispiel sollen die Endbereiche 8,9 der äußeren Lagen 2,3 durch Umbördeln miteinander verbunden sein, wobei auch hier alternative Verbindungsmethoden, wie beispielsweise Clinchen, denkbar sind.an expanded metal 4, which is positioned under defined prestress between the outer layers 2, 3 of the shielding element 1. The individual chambers 5 of the expanded metal 4 form between the mutually facing smooth end faces 6,7 of the outer layers 2,3 air cushion, wherein the amount of air cushion can be predetermined by varying the distance h of the two end faces 6,7 depending on the application. Alternatively, it is possible to produce the outer layers 2, 3 from aluminum sheets or from aluminum-coated steel sheets. The three layers 2, 3, 4 provided in this example can simultaneously be wound on one another by coils arranged one above the other and be advanced directly, without additional operation, into a downstream tool for further processing. As a result of the assembly and connection process of the layers 2, 3, 4 taking place in succession, the same are connected to one another under defined prestress, so that rattling of the expanded metal 4 between the layers 2, 3 is prevented. In a subsequent subsequent three-dimensional shaping of the multilayer sandwich described, the expanded metal 4 serves as a spacer between the two outer layers 2, 3 and prevents compression of the outer layers 2, 3 and thus the reduction of the air cushion provided in the chambers 5. In this example, the end regions 8, 9 of the outer layers 2, 3 should be connected to one another by crimping, wherein alternative connection methods, such as, for example, clinching, are also conceivable here.
Figur 2 zeigt als Draufsicht das in Figur 1 eingesetzte Streckmetall 4. Erkennbar sind der gitterförmige Aufbau des Streckmetalls 4, wobei eine Vielzahl von Maschen 10 gebildet werden. Die Maschen 10 werden gebildet durch Stege 11, wobei im Kreuzungspunkt zwischen vier aneinander stoßenden Stegen 11 Knotenpunkte 12 gebildet werden. Das Streckmetall 4 hat eine vorgebbare Höhe h, wie sie in Figur 1 angesprochen ist. Durch Variation der Maschenweite, der Maschenlänge, der Stegdicke sowie der Stegbreite können unterschiedlichste technische Anforderungen im Bereich eines Kraftfahrzeuges bedient werden. Figure 2 shows a plan view of the expanded metal 4 used in Figure 1. Visible are the lattice-shaped structure of the expanded metal 4, wherein a plurality of meshes 10 are formed. The meshes 10 are formed by webs 11, 11 nodes 12 are formed at the intersection between four abutting webs. The expanded metal 4 has a predetermined height h, as it is addressed in Figure 1. By varying the mesh size, the mesh length, the web thickness and the web width a variety of technical requirements in the field of a motor vehicle can be operated.

Claims

Patentansprüche claims
1. Abschirmelement für Kraftfahrzeuge, bestehend aus mindestens zwei beabstandeten, miteinander in Wirkverbindung stehenden metallischen Lagen (2,3) etwa gleicher Materialdicke (d), zwischen denen mindestens eine Lage (4) eines Streckmetalls unter definierter Vorspannung eingebracht ist.1. Shielding element for motor vehicles, consisting of at least two spaced, mutually operatively connected metallic layers (2,3) about the same material thickness (d) between which at least one layer (4) of an expanded metal is introduced under a defined bias.
2. Abschirmelement nach Anspruch 1, dadurch gekennzeichnet, dass die metallischen Lagen (2,3) aus Aluminiumblech bestehen.2. Shielding element according to claim 1, characterized in that the metallic layers (2,3) consist of aluminum sheet.
3. Abschirmelement nach Anspruch 1, dadurch gekennzeichnet, dass die metallischen Lagen (2,3) aus Edelmetall bestehen.3. Shielding element according to claim 1, characterized in that the metallic layers (2,3) consist of precious metal.
4. Abschirmelement nach Anspruch 1, dadurch gekennzeichnet, dass die metallischen Lagen (2,3) aus einem AI-beschichteten Stahl bestehen.4. Shielding element according to claim 1, characterized in that the metallic layers (2,3) consist of an AI-coated steel.
5. Abschirmelement nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die metallische Lagen (2,3) aus einer Kombination von Aluminiumblech und/oder Edelstahl und/oder AI-beschichtetem Stahl bestehen.5. Shielding element according to one of claims 1 to 4, characterized in that the metallic layers (2,3) consist of a combination of aluminum sheet and / or stainless steel and / or Al-coated steel.
6. Abschirmelement nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die metallischen Lagen (2,3) zumindest streckmetalllagenseitig mit glatten Stirnflächen (6,7) versehen sind.6. Shielding element according to one of claims 1 to 5, characterized in that the metallic layers (2,3) are provided at least expanded metal layer side with smooth end faces (6,7).
7. Abschirmelement nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass zur Einstellung der Luftpolstermenge zwischen den Stirnflächen (6,7) der metallischen Lagen (2,3) Streckmetalle (4) unterschiedlicher Materialstärke (h) einsetzbar sind. 7. Shielding element according to one of claims 1 to 6, characterized in that for adjusting the amount of air cushion between the end faces (6,7) of the metallic layers (2,3) expanded metals (4) of different material thickness (h) can be used.
8. Abschirmelement nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Verbindung der metallischen Lagen (2,3,4) durch zumindest partielles Umbördeln von Randbereichen (8,9) mindestens einer der metallischen Lagen (2,3) herbeifuhrbar ist.8. Shielding element according to one of claims 1 to 7, characterized in that the connection of the metallic layers (2,3,4) by at least partial beading of edge regions (8,9) of at least one of the metallic layers (2,3) can be brought about ,
9. Abschirmelement nach einem der Ansprüche 1 bis 8, einsetzbar als Hitzeschild oder als Schallschutzelement. 9. Shielding element according to one of claims 1 to 8, can be used as a heat shield or as a soundproofing element.
EP05809172A 2004-12-22 2005-11-09 Shielding element for motor vehicles Withdrawn EP1828566A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410061826 DE102004061826B4 (en) 2004-12-22 2004-12-22 Shielding element for motor vehicles
PCT/DE2005/002005 WO2006066523A1 (en) 2004-12-22 2005-11-09 Shielding element for motor vehicles

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EP1828566A1 true EP1828566A1 (en) 2007-09-05

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WO (1) WO2006066523A1 (en)

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DE102010024733A1 (en) * 2010-06-23 2011-12-29 Volkswagen Ag Surface component i.e. door shell of side door, for vehicle i.e. motor car, has stretching lattice rigidly connected to edge areas of frame structure and/or sheet metal, where remaining area of lattice is arranged at distance to sheet metal
DE202014006987U1 (en) * 2014-09-01 2015-09-03 Reinz-Dichtungs-Gmbh Heat shield and shielded with such a heat shield component

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DE102004061826A1 (en) 2006-07-13
DE102004061826B4 (en) 2011-04-07
WO2006066523A1 (en) 2006-06-29

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