EP2518286A1 - Component for motor vehicles and method for its production - Google Patents

Abstract

The component (1) has a carrier (2) and a plate (3) for increasing the structural stiffness of a part of the carrier, where the plate is fixed at the carrier over a connection (4). The plate has a partial honeycomb structure (W). The carrier has an opening (10a) for executing an exhaust gas pipe (16), where the plate is fixed at the carrier spaced from the opening. Independent claims are included for the following: (1) a method for manufacturing a component; and (2) a sound absorber with a housing.

Description

The invention relates to a component for motor vehicles, a method for producing a component for motor vehicles and a use. In particular, the invention thus relates to a vehicle component, preferably a silencer and a heater, such. B. a heater or a heater.

Components are used in a variety of fields of technology use, such as in construction, in motor vehicles or the like. In order to adapt components to special requirements, these are often reinforced in order to be able to withstand greater loads or to enable a longer service life of the component.

For example, in the area of house construction from the DE 20 2008 014 465 U1 has become known a component which is provided with a reinforcing layer of hydraulically set material of a cement mortar or concrete mixture, wherein the reinforcing layer of a reinforcing mat, an outer skin and interposed cement mortar or concrete mixture is formed.

From the DE 10 2006 035 578 A1 Furthermore, a method for producing a fiber-reinforced component has become known. Here, a fiber reinforcement structure is first prepared and then embedded in the manufacture of the component in the carrier material of the component.

The present invention addresses the problem of simply and inexpensively improving a component for a motor vehicle in terms of its rigidity.

• In Anspruch 1 ist ein Bauteil für Kraftfahrzeuge, insbesondere in Abgasanlagen oder in Standheizungen, definiert, umfassend einen Träger, wobei der Träger eine vorgegebene Struktursteifigkeit aufweist, und eine Platte zur Erhöhung der vorgegebenen Struktursteifigkeit zumindest eines Teils des Trägers, wobei die Platte an dem Träger über zumindest eine Verbindung festgelegt ist, wobei die Platte zumindest teilweise eine Wabenstruktur aufweist.
• In Anspruch 10 ist ein Verfahren zur Herstellung eines Bauteils, insbesondere gemäß zumindest einem der Ansprüche 1-9, definiert, umfassend den Schritt Festlegen der Platte an zumindest einem Teil des Trägers. Es ist klar, dass zuvor der Träger und die Platte hergestellt werden müssen, wobei bei der Herstellung der Platte diese zumindest teilweise mit einer Wabenstruktur versehen wird.
• In Anspruch 13 ist eine Verwendung eines Bauteils gemäß zumindest einem der Ansprüche 1-9 in einem Kraftfahrzeug definiert, insbesondere in einem Abgasstrang und/oder in einer Standheizung des Kraftfahrzeugs.

This problem is solved according to the invention by the subject matters of the independent claims:

• Claim 1 defines a component for motor vehicles, in particular in exhaust systems or in parking heaters, comprising a carrier, wherein the carrier has a predetermined structural stiffness, and a plate for increasing the predetermined structural rigidity of at least a part of the carrier, wherein the plate on the carrier is determined via at least one connection, wherein the plate has at least partially a honeycomb structure.
• Claim 10 defines a method for producing a component, in particular according to at least one of claims 1-9, comprising the step of fixing the plate to at least a part of the carrier. It is clear that the carrier and the plate must first be prepared, wherein in the manufacture of the plate, this is at least partially provided with a honeycomb structure.
• In claim 13, a use of a component according to at least one of claims 1-9 is defined in a motor vehicle, in particular in an exhaust system and / or in a parking heater of the motor vehicle.

By arranging a plate with at least partial honeycomb structure, an increase in the rigidity of the carrier and thus of the component is achieved at least in the region of the plate. The at least partially honeycomb-shaped plate can be set in a simple and cost-effective manner to the support of the component. At the same time, the life of the component as a whole is improved as a result of the increased rigidity cracks or material fatigue of the material of the carrier can be reduced. Since the at least partially honeycomb-shaped plate a part of the loads acting on the component can act, can be reduced in this way, for example, the wall thickness of the carrier, so that less material is needed for the production of the carrier. Finally, the at least partially honeycomb plate can also be used flexibly and can be fixed both on flat, flat and / or on curved surfaces of the carrier. Suitably, the carrier is in the area in which the plate is arranged, flat and in particular just designed, which simplifies the arrangement of the plate, the purpose of which may be complementary, so in particular also flat, designed.

A honeycomb structure of the plate may in particular comprise triangular, quadrangular, hexagonal, octagonal and / or dodecagonal honeycombs. In addition, other, preferably symmetrical polygons are conceivable as honeycomb, for example, ten-cornered or the like. The honeycomb structure may be formed differently in different regions of the plate, for example, a hexagonal honeycomb structure may be arranged in one region, while in another region, for example, dodecagonal honeycombs may be arranged on the basis of an expected different load. The honeycomb structure can be impressed on a plate, for example by embossing technique. In addition, it is also possible to assemble the plate from individual elements and to arrange the individual elements in a honeycomb structure.

Advantageous embodiments are the subject of the dependent claims.

An embodiment in which the carrier has at least one opening for passing through an exhaust pipe is advantageous, wherein the plate is fixed at a distance from the at least one opening on the carrier. If such exhaust gas leading exhaust pipe is fixed in the installed state on the carrier, vibrations can be introduced via the pipe in the carrier in vehicle applications in the operation of the exhaust system or the heater, with a small wall thickness stimulate the wearer in a region spaced from the opening to vibrate, which can be radiated as sound waves into the environment. By mounting the plate in this vibration-prone area, the plate can be stiffened in this area, which significantly reduces the tendency to vibrational excitation.

Advantageously, it can be provided that the carrier has a respective edge enclosing the collar, projecting from the carrier edge. At this edge, the respective exhaust pipe can be supported and - if necessary - also fixed. Preferably, the edge is in a side facing away from the plate side from the carrier.

In an advantageous development of the solution according to the invention, the plate is formed in multiple layers. In this way, the rigidity of the plate and thus of the component is substantially increased, since the plate can have different layers of different materials and thus also different stiffness. At the same time, the lifetime of the plate as a whole increases because, for example, the outermost layer can be formed as a protective layer for a specific application of the component.

In a further advantageous embodiment, the connection is non-positively and / or cohesively formed. In this way it is ensured that the plate is reliably connected to the component and forces acting on the component and its carrier, so for example vibrations when the component is arranged in an exhaust line of a motor vehicle, are reliably transmitted to the plate at least partially , This reduces vibrations of the component itself.

In a further advantageous development, the connection is designed as an adhesive, soldering, welding, riveting, vulcanizing and / or screw connection. This allows a simple, inexpensive and reliable connection of the at least partially honeycomb-shaped plate with the carrier. It is of course possible to combine several of the aforementioned features to improve the connection of plate and carrier together.

To form the honeycomb structure, the plate may be designed as a bump plate. Such a bump plate is characterized in that a plurality of bumps are formed from a, in particular flat, base plate, e.g. by deep drawing or by high pressure forming, which protrude from the base plate on a front side and at the same time produce complementary cavities on the back side of the base plate. These cavities then form the honeycomb of the honeycomb structure. The individual bumps may preferably have flat, flat end faces and have a conical or pyramid-shaped jacket. In that regard, the end faces of the honeycomb structure are connected via the respective jacket with the base plate. These shells are arranged at an angle between zero degrees and less than ninety degrees perpendicular to a surface of the carrier, in particular, this angle is forty-five degrees. Another part of the honeycomb structure is substantially flat directly on the support and is e.g. connected by welds with the carrier cohesively. Depending on the arrangement of the bump plate are either the front sides of the bumps directly on the carrier and the base plate is spaced therefrom or the base plate is located directly on the carrier and the end faces of the bumps are spaced therefrom.

Suitably, the plate may be configured as a composite plate which is assembled from a plurality of individual plates. Particularly advantageous is the use of a hump composite plate, which is assembled from at least two bump plates is. This is expediently carried out such that the bumps of the first bump plate bear with their end faces flat against the base plate of the second bump plate and optionally attached thereto, namely at the front thereof, in each case between adjacent bumps of the second bump plate. Conversely, at the same time, the bumps of the second bump plate also come with their end faces on the front side of the base plate of the first bump plate to the plant and can be fixed there. As a result, a particularly rigid honeycomb structure is produced. In order to further increase the stiffness of the honeycomb structure, the bumps may optionally be dimensioned and spaced from each other so that the bumps of the first bump plate over their coats on the bumps of the second bump plate come to rest and thereby allow intensive support in the shear direction. Such a hump composite plate is for example from the DE 10 2008 004 544 B3 known.

In an advantageous embodiment of the method, the plate is non-positively and / or materially connected to the carrier. In this way, it is ensured that the plate is reliably connected to the component and forces acting on the component and its carrier, so for example vibrations when the component is arranged in an exhaust line of a motor vehicle, are reliably transmitted to the plate at least partially , and so reduce vibrations of the component itself.

In a further advantageous embodiment of the method, the plate is glued to the carrier, soldered, welded, riveted, vulcanized and / or screwed. This allows a simple, inexpensive and reliable connection of the plate to the carrier. It is of course possible to combine several of the aforementioned features to improve the connection of plate and carrier together.

Other important features and advantages of the invention will become apparent from the subclaims, from the drawings and the accompanying description of the figures with reference to the drawings.

It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the invention.

Preferred embodiments of the invention are illustrated in the drawings and will be described in more detail in the following description, wherein like reference numerals refer to the same or similar or functionally identical components.

Fig. 1

einen Querschnitt eines erfindungsgemäßen Bauteils in der Art eines Schalldämpfers in einer ersten Ausführungsform;

Fig. 2

einen Querschnitt eines erfindungsgemäßen Bauteils in der Art eines Schalldämpfers in einer zweiten Ausführungsform; und

Fig. 3

eine teilweise geschnittene Aufsicht eines erfindungsgemäßen Bauteils in der Art eines Schalldämpfers gemäß der Fig. 1.

In each case show schematically

Fig. 1

a cross section of a device according to the invention in the manner of a muffler in a first embodiment;

Fig. 2

a cross section of a device according to the invention in the manner of a muffler in a second embodiment; and

Fig. 3

a partially sectioned plan view of a component according to the invention in the manner of a muffler according to the Fig. 1 ,

According to the Fig. 1 Reference numeral 1 denotes a component according to the invention, which is designed here in the manner of a silencer. The component 1 comprises a carrier 2, which may form part of a housing 17 of the component 1 or may be arranged in the interior of the housing 17 of the component 1. In the lower area, the carrier 2 according to FIG. 1 a substantially circular opening 10a having a protruding edge R; Through this opening 10a, an exhaust pipe 16 is passed. The exhaust pipe 16 may form a sliding seat with the edge R. Alternatively, the exhaust pipe 16 may be attached to the edge R, for example by means of a gas-tight weld. In the upper area above the edge R, the carrier 2 extends substantially vertically upwards in the plane of the page. On the side of the carrier 2, which faces away from the edge R, and which faces, for example, an inner side of the component 1, the carrier 2 has a flat and in particular flat region in the upper region, in which a plate 3 is arranged on the carrier 2 , The plate 3 has a honeycomb-shaped structure W, ie a honeycomb structure W, and is in particular according to FIG Fig. 1 formed such that a part of the honeycomb structure W is spaced from the carrier 2.

To form the honeycomb structure W, the plate 3 can be designed as a cuspidate, which is also referred to below as 3. Such a bump plate 3 is characterized in that a plurality of bumps 11 are formed from a, in particular flat, base plate 12, for example by deep drawing or by high-pressure forming, on a front side (in Fig. 1 right) protrude from the base plate 12 while at the same time complementary to cavities 13 on the back (in Fig. 1 left) of the base plate 12 produce. These cavities 13 then form the honeycombs of the honeycomb structure W, which can also be referred to below as 13. The individual bumps 11 may preferably have flat, flat end faces 14 and have a conical or pyramidal jacket 15. In that regard, the end faces 14 of the honeycomb structure W are connected via the respective jacket 15 to the base plate 12. These coats 15 are at an angle between zero degrees and arranged less than ninety degrees perpendicular to a surface of the carrier 2, in FIG. 1 the angle is forty-five degrees. Another part of the honeycomb structure W lies directly on the carrier 2 substantially flat and is connected by welding points 4 to the carrier 2 cohesively. Depending on the arrangement of the bump plate 3 are either the end faces 14 of the bumps 11 directly on the carrier 2 and the base plate 12 is spaced therefrom or as in Fig. 1 the base plate 12 is located directly on the carrier 2 and the end faces 14 of the bumps 11 are spaced therefrom.

In Fig. 2 is essentially a component 1 according to Fig. 1 shown. In contrast to Fig. 1 is the plate 3 according to Fig. 2 two-ply with two layers 3a, 3b formed. There may also be arranged three or more layers. The layers 3a, 3b can consist of completely or partially the same or preferably different material. The plate 3 in turn has due to its honeycomb structure W areas which abut substantially flat on the carrier 2 and areas which are spaced from the carrier 2.

To further increase the rigidity of the component 1 and the honeycomb-shaped plate 3, a further, in particular flat plate 5 may be arranged on the side facing away from the carrier 2 of the plate 3 in the areas spaced from the carrier 2 areas. This plate 5 is fixed via a further connection 6, for example a welded connection, to the honeycomb-shaped plate 3. The plate 5 is arranged substantially parallel to the region of the carrier 2, on which the plate 3 is fixed.

The further plate 5 can likewise have a honeycomb structure W, the honeycombs projecting from this plate 5 in the direction of the other plate 3 and contacting the other plate 3 between the honeycombs of the other plate 3. to To improve the shear stiffness, the honeycombs of the two plates 3, 5 can also support one another transversely to the respective plane of the plate.

In the examples shown, the carrier 2 is designed as an intermediate bottom, which is arranged in the interior of the housing 17. Alternatively, the carrier may also be an end bottom of the casing 17. Here, the carrier 2, so the respective bottom edge bordered by a jacket 18 of the housing 17. For Beeseren connection to the jacket 18, the carrier 2 may have at its outer edge a projecting from the carrier 2, collar-like circulation 19, which rests on the jacket 18. In the examples, the circulation 19 is on the same side from the carrier 2, on which the plate 3 is arranged.

Suitably, the plate 3 is thus configured as a composite plate which is assembled from a plurality of individual plates. Particularly advantageous is the use of a hump composite plate, which is assembled from at least two bump plates 3. This is expediently such that the bumps 11 of the first bump plate 3 abut with their end faces 14 flat against the base plate 12 of the second cusp plate 3 and optionally attached thereto, at the front thereof, respectively between adjacent bumps 11 of the second cusp plate 3. Conversely At the same time, the bumps 11 of the second bump plate 3 with their end faces 14 on the front side of the base plate 12 of the first bump plate 3 come to rest and can be fastened there. As a result, a particularly rigid honeycomb structure W is generated. In order to further increase the rigidity of the honeycomb structure W, the bumps 11 may be dimensioned and spaced from each other such that the bumps 11 of the first bump plate 3 abut against the bumps 11 of the second bump plate 3 via their shrouds 15, thereby providing intensive support allow the shear direction.

In Fig. 3 is a component 1 in the form of a muffler according to Fig. 1 shown in the supervision. In this case, the component 1 comprises the support 2, which is designed, for example, as an end floor or as an intermediate floor, which has two openings 10a, 10b. These are essentially in the lower region of the carrier 2 according to Fig. 3 arranged. Above the two openings 10a, 10b, the plate 3 is arranged with the honeycomb structure W. The plate 3 is partially formed analogous to the curved shape of the component 1 and the carrier 2.

In summary, the invention has several advantages. On the one hand, it allows a simple and cost-effective increase in the structural rigidity and strength of components. On the other hand, the wall thickness of the carrier 2 can be reduced while maintaining a desired structural rigidity or component strength.

Claims (15)

Component (1) for motor vehicles, in particular in exhaust systems or in parking heaters, comprising
a support (2) and a plate (3) for increasing the structural rigidity of at least part of the support (2), the support (2) being fixed to the support (2) via at least one connection (4),
characterized in that
the plate (3) at least partially a honeycomb structure (W). Component according to claim 1,
characterized in that
the carrier (2) has at least one opening (10a, 10b) for passing through an exhaust pipe (16), wherein the plate (3) is fixed at a distance to the at least one opening (10a, 10b) on the carrier (2). Component according to claim 2,
characterized by
in that the carrier (2) has an edge (R) which surrounds the respective opening (10a, 10b) and projects in the shape of a collar from the carrier (2). Component according to one of claims 1 to 3,
characterized by the fact that
the plate (3) is formed in several layers (3a, 3b). Component according to at least one of claims 1-4,
characterized in that
the connection (4) is non-positively and / or cohesively formed. Component according to at least one of claims 1-5,
characterized in that
the connection (4) is designed as an adhesive, soldering, welding, riveting, vulcanizing and / or screw connection. Component according to at least one of claims 1-6,
characterized in that
in that the plate (3) in the region of the honeycomb structure (W) is configured as a bump plate (3), which has a base plate (12) from which bumps (11) each project from an end face (14) spaced from the base plate (12) ) and a jacket (15) which connects the end face (14) to the base plate (12), the respective jacket (15) enclosing a cavity (13) delimited by the end face (14) and comprising a honeycomb (13) of the honeycomb structure (W) forms. Component according to at least one of claims 1-7,
characterized in that
the sheaths (15) are disposed at an angle greater than zero degrees and less than ninety degrees relative to a surface of the carrier (2). Component according to one of the preceding claims,
characterized,
that the plate (3) at least in the region of the honeycomb structure (W) is designed as a composite panel. Component according to claims 7 and 9,
characterized,
that the composite plate is configured as a cusp composite plate (3). Component according to claim 10,
characterized,
in that the bumps (11) of one bump plate (3) are laterally supported by the respective jacket (15) on the bumps (11) of the other bump plate (3). Method for producing a component (1), in particular according to at least one of Claims 1-11, in which the plate (3) is fixed to at least one part of the carrier (2),
characterized in that
the plate (3) is at least partially provided with a honeycomb structure (W). Method according to claim 12,
characterized in that
the plate (3) non-positively and / or materially connected to the carrier (2), wherein the plate (3) with the carrier (2) in particular glued, soldered, welded, riveted, by means of vulcanization and / or screwed. Use of a component (1) according to at least one of claims 1-11 in a motor vehicle, in particular in an exhaust gas system and / or in a parking heater of the motor vehicle. A muffler of an exhaust system or auxiliary heater for a motor vehicle, comprising a housing (17) having a component (1) according to one of claims 1 to 11, wherein the support (2) forms an end floor or an intermediate floor of the housing (17) and of a jacket (18) of the housing (17) is bordered edge.

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