DE102017106028A1 - Shaping a memory container integrated in a structural component of a vehicle frame - Google Patents

Abstract

The invention relates to a structural component (10) for a chassis frame (100) of a vehicle (N) which comprises at least one flange end (10A) for attaching the structural component (10) to the chassis frame (100) The at least one flange end (10A) has a flange receptacle (10A-2) which receives the storage container (10E) at the end. It is provided that the storage container (10E) attaches to the at least one flange receptacle (10A-2). has adapted geometry, which is optimized in response to the forces acting on the storage container (10E) forces and allows a high storage volume.

Description

The invention relates to a structural component for a chassis frame of a vehicle, which comprises at least one flange end for fastening the structural component to the chassis frame, which is in communication with a storage container, wherein the at least one flange end has a Flanschaufnahme.

A chassis frame of a vehicle, in particular a load vehicle, typically comprises two longitudinal members connected to a plurality of cross members, which are manufactured in conventional construction from steel components, in particular from steel profiles. The aforementioned crossbeams are subjected to high loads and their rigidity has a significant influence on the handling and comfort of the vehicles. In order to reduce the weight and subsequently the fuel consumption and CO ₂ emissions, from the ONLINE plastic magazine is a publication from 03.11.2015 entitled "High performance material in the car - functional integration cross member is also high-pressure tank" known, which is a cross member in composite metal hybrid design, in which a high-pressure tank is integrated.

From the publication DE 20 2013 004 660 U1 a vehicle trailer is described with a frame, which comprises at least a hollow frame member part, the inner cavity is formed as a compressed air reservoir pressure-tight.

From the publication DE 20 2012 102 721 U1 is also a compressed air tank for use in vehicles, especially in commercial vehicles, known, which is designed as a hollow profile and forms a structural component of the vehicle or at least partially replaced the structural component.

A manufacturing process for the production of a pressurized gas tank is from the document DE 10 2011 116 656 B3 , wherein the compressed gas tank has a filling and removal nozzle and a wall of the compressed gas tank consists of a carbon fiber composite material layer and is free of an inner-walled liner layer. In the interior of the pressurized gas tank, a support structure of struts or spokes of carbon fiber material is arranged, wherein the distal strut or spoke ends are received in a polymeric matrix in the wall of the pressurized gas tank forming carbon fiber composite layer.

The invention is based on the prior art, the object to provide a structural part of a chassis frame of a vehicle with an integrated storage container, which has a high stiffness with a low weight, the storage volume of the storage container should be optimally designed.

The optimum design of the storage volume and the requirements on the rigidity of the storage container of the structural component is advantageously carried out by the shape of the storage container and by the shape of the adjacent components, as will be explained in detail below and with reference to the embodiments shown in the figures.

The starting point of the invention is a structural component for a chassis frame of a vehicle, which comprises at least one flange end for attachment of the structural component to the chassis frame, which communicates with a storage container, wherein the at least one flange end has a Flanschaufnahme which receives the storage container end.

According to the invention, it is provided that the storage container (liner) has a geometry which is adapted to the at least one flange receptacle and which is optimized as a function of the forces acting on the storage container and enables a high storage volume.

In a preferred embodiment of the invention, the storage container is a liner which forms an envelope core of the pressure tank with a cavity formed inside the envelope. The storage container is referred to below as a liner.

Storage tank (liner) and a connecting element, which will be discussed in detail, form after completion of the cross member a pressure tank.

It is preferably provided that the structural component has two flange ends, each with a flange receptacle, which receive the liner on both sides, wherein the Flanschaufnahmen the Flanschenden have inner contours, which correspond to the outer contours of the liner.

By matching the geometry of the liner to the Flanschaufnahmen the Flanschenden the liner can be advantageously connected to save space within a given space with the flange ends. In addition, the entire cavity provided in the flange receptacles can be used as a storage volume for the medium to be stored in the liner of the pressure tank.

In detail, it is preferably provided that a body of the liner has two opposite necks, each in opposed to each other Go over caps, wherein between the caps a central body of the liner is formed.

The opposing necks are in the assembled state positively engaging in the Flanschenden and the respective opposite caps of the liner in the assembled state positively in the Flanschaufnahmen fitting, the Flanschaufnahmen each having a flange, between which arranged in the assembled state of the central body as part of the body of the liner is. This structure has been found to be advantageous because the opposite necks serve to fix the liner in the flange ends, while the subsequent caps can be positioned on the Flanschaufnahmen form fit in the flange, wherein at the same time on the caps already an enlarged storage volume for Is made available.

It is preferably provided that the body of the liner arranged between the flange ends has a uniform cross-section when viewed in a longitudinal extension of the structural component. In various embodiments, the uniform cross section of the body of the liner between the flange ends is circular or elliptical or rectangular. The possible embodiments are explained and illustrated in detail in the description part. The embodiments with a uniform cross section are advantageously easier to produce than the embodiments with a non-uniform cross section.

In another alternative embodiment, it is provided that the body of the liner arranged between the flange ends has a non-uniform cross-section when viewed in a longitudinal extent of the structural component.

In various embodiments, the uneven cross-section of the body of the storage container is barrel-shaped or biconical or circular / elliptical.

The possible embodiments are explained and illustrated in detail in the description part.

Although the embodiments having uneven cross sections are less easy to manufacture, the storage volume may be affected by the shape of uneven cross sections in terms of maximizing the storage volume.

With regard to the storage volume, a uniform round cross section of the liner is the optimum. However, if the storage volume is not the sole reference variable, depending on other boundary conditions (stability of the liner and / or wall thickness of the liner and / or weight of the liner) with regard to the shape of the best compromise between volume and weight can be achieved, so that ultimately uneven cross-sections of the liner come into question.

It has been found a preferred embodiment with the non-uniform circular / elliptical cross section of the body of the liner, which is characterized in that the circular cross section of the necks with one end subsequent circular caps in other end elliptical caps merges, which are up to the longitudinally extending center the central body of the storage container assume a circular cross-section. Advantageously, a particularly large storage volume was formed in this embodiment. This shape was determined to achieve a maximum storage volume depending on the available space and the stiffness and load requirements of the structural component and is particularly advantageous due to its large storage volume. It is preferably provided that the circular cross-sections of the necks and the one-sided subsequent circular cross sections of the caps have a predetermined outer diameter, the other end formed elliptical cross sections of the elliptical caps the geometrically defined, with respect to the length predetermined semi-axes (small and large half-axis of an ellipse) and the circular cross section of the center of the central body of the liner has a predeterminable outer diameter.

As a preferred embodiment, a geometrical definition has been found in the design of the liner, namely that the small half-axis a maximum radius of the inner diameter of the ellipsoid Flandschrandkonturen the Flanschaufnahmen and thus analogous to the maximum radius of the outer diameter of the caps of the storage container in the region of the transition of the storage container of the caps corresponds to the central body.

Another geometric definition of the embodiment has also been found, which consists in that the large semiaxis corresponds to the maximum radius of the outer diameter of the liner in the middle of the central body of the liner.

In addition, in this preferred embodiment, a determination is made concerning the transition between the elliptical cross-section of the caps in the region of the transition of the liner from the elliptical caps to the central body.

According to the invention, the transfer of the elliptical cross section of the caps of the liner in the region of the transition of the liner from the elliptical caps to the central body to the formed in the middle of the central body circular cross section of the liner with the predetermined outer diameter tangent-like.

According to the invention, it is further provided that an indirect, firm connection between the storage container (liner) and flange receptacle is effected by a connecting element designed as a fiber composite laminate, which at least partially surrounds a lateral surface of the flange receptacle and at least partially a lateral surface of the storage container in one piece.

Advantageously, the storage container and the flange end form a unit, which are firmly connected indirectly by means of the connecting element. By running fiber composite layer of the storage container and the flange are connected to each other in an advantageous manner, without the usual connection techniques are used. In the description is explained in detail how the indirect connection between the storage container and the flange is executed and made. Due to the integration of the storage container in the structural component, in particular in a cross member, installation space is advantageously obtained in a vehicle, since the storage container previously arranged outside the structural component is now arranged within the structural component.

In addition, it is advantageously ensured that the structural component meets the stability requirements and strength requirements within a chassis frame and at the same time has a low weight.

It is also preferred that the liner is made, for example, from a thermoplastic material, in particular from polyethylene or polyamide or polyoxymethylene.

The liner is in this case a sealing layer, while the pressure loads are taken on a pressure filling of the liner and the mass loads when filling the liner with a medium of high density of the intended as a connecting element, the liner surrounding wall.

During the production of the cross member, the liner also advantageously serves as the component of the envelope around which the said wall, in particular by winding, is constructed, as will be explained below.

By the production of the liner from a thermoplastic material and / or by the production of the flange of at least one lightweight material, in particular aluminum, it is already ensured that the structural component has a low weight.

In addition, according to the invention, the connecting element, which indirectly connects the two components, the liner and the flange end, is likewise made of a lightweight material, in particular of the fiber composite laminate, so that the structural component consists of three components, which in the most advantageous Design are all formed of a lightweight material, resulting in a structural component with a very low weight.

It is preferably provided that the flange receptacle of the flange end is formed like a shell, wherein an outer contour of a cap of the liner corresponds to an inner contour of the cup-like Flanschaufnahme. This solution advantageously ensures that the liner, irrespective of the indirect connection with the flange end, comes to a desired position with respect to the end of the flange, before the indirect connection between flange end and liner is produced.

The liner in turn has a cap which allows the liner to be positively inserted into the cup-like flange receptacle of the flange end, the flange receptacle forming a flanged edge at its end opposite the flange end. The flange edge forms the transition of the Flanschaufnahme to the liner, as explained in more detail in the description.

It is further preferred that the flange end has a circular circumferential flange groove on its inner side facing the liner, a sliding bushing and a seal being arranged in the flange groove. As a result, it is ensured in an advantageous manner that a precisely fitting recording and storage of the liner in the flange is possible, while at the same time it is ensured that the liner is sealed against the flange.

The structural component is preferably characterized in that a neck of the liner on the one hand via the sliding bush is positively inserted into the flanged groove of the flange, wherein the seal provides a seal against the flange. To ensure a transition between the end of the liner and the flange end, the liner advantageously has the neck.

The connecting element is, as already explained, formed as a fiber composite laminate, wherein it is preferably provided that the fiber composite laminate is made as a fiber plastic composite of a plastic matrix as a bedding mass and in the ballast lining reinforcing fibers, in particular carbon fibers, wherein the carbon fibers by at least partially wrapping the Flanschaufnahme and at least partially wrapping the liner forming the connection element which establishes the indirect connection between the flange receptacle of the flange end and the liner.

By this procedure, it is easily possible to indirectly connect the flange receptacle of the flange end and the liner via the above the lateral surface of the Flanschaufnahme and above the outer surface of the liner arranged fiber composite laminate, wherein the outer shape of the Flanschaufnahme and the liner are designed very variable can.

The at least partially wrapping the lateral surface of the flange receptacle and the at least partially wrapping the lateral surface of the liner is a technique that is not limited to circular cylindrical geometries with respect to the shape of the composite fiber laminate formed as a connecting element.

In other words, the connection technique according to the invention by means of the fiber composite laminate establishes an indirect connection between the flange receptacle and the liner, in which the components are arranged fixed relative to one another without the flange receptacle and the liner being directly connected to one another. In this respect, an indirect connection between the flange receptacle and the liner is produced by the fiber composite laminate. As a result, the effect is achieved that the liner can contract in the context of the available space between the inner surface of the fiber composite laminate and the outer surface of the liner in a cooling material and can expand when a material warming.

In a preferred embodiment of the invention, the liner on at least one side of a liner opening and the flange end at least one standing in contact with the liner opening flange opening. The at least one liner opening and the at least one flange opening enable the supply and removal of the medium stored in the liner. The medium is, for example, pressurized air, although other gaseous or liquid media may be stored in the liner.

If the structural component is used as a crossbeam in the chassis frame, it is provided that the structural component has two flange ends, each with a flange receiving loosely on both sides of the liner, wherein the indirect fixed connection between the liner and the flange is effected by the connecting element designed as fiber composite laminate which at least partially surrounds the lateral surfaces of the flange receptacles and at least partially the lateral surface of the liner, wherein in the installed state, in which the cross member is arranged between two longitudinal members of the chassis frame, forces acting on the flange ends can advantageously be transmitted via the connecting element.

1. a) Fertigen von zwei Flanschenden mit je einer Flanschaufnahme,
2. b) Fertigen eines Liners,
3. c) Einstecken des Liners in die Flanschaufnahmen, so dass die Flanschaufnahmen den Liner im Zusammenbauzustand beidseitig endseitig lose aufnehmen.

A cross member as a preferred embodiment of the invention is produced according to the invention in a method comprising the following steps:

1. a) manufacture of two flange ends, each with a flange receptacle,
2. b) finishing a liner,
3. c) inserting the liner into the flange receptacles, so that the flange receptacles loosely receive the liner on both sides in the assembled state.

According to the invention, in a step d), a lateral surface of the flange receptacles is at least partially and a lateral surface of the liner at least partially surrounded by a connecting element made of a fiber composite laminate, whereby the Flanschaufnahmen and the liner are indirectly fixed after completion of the connecting element.

1. a) Fertigen eines Flanschendes mit einer Flanschaufnahme,
2. b) Fertigen eines Liners,
3. c) Einstecken des Liners in die Flanschaufnahme, so dass die Flanschaufnahme den Liner im Zusammenbauzustand endseitig lose aufnimmt.

In principle, a structural component with only one end of the flange can be produced with the following steps:

1. a) producing a flange end with a flange receptacle,
2. b) finishing a liner,
3. c) inserting the liner into the flange receptacle, so that the flange receptacle loosely receives the liner in the assembled state at the end.

According to the invention, it is then provided that in a step d) the lateral surface of a flange receptacle is at least partially surrounded and the lateral surface of the liner at least partially with a connecting element made of a fiber composite laminate, whereby the Flanschaufnahme and the liner are connected firmly after completion of the connecting element.

• 1A einen Fahrgestellrahmen eines Nutzfahrzeuges in einer perspektivischen Darstellung mit einem als Einzelheit I herausgezogenen Querträger als Strukturbauteil des Fahrgestellrahmens nach dem Stand der Technik;
• 1B den Querträger gemäß 1A in einer perspektivischen Darstellung gemäß der in 1A dargestellten Einzelheit I;
• 2A einen mit einem integrierten Liner versehenen erfindungsgemäßen Querträger in einer ersten Ausführungsform in einer perspektivischen Darstellung in Längsträgern eines Fahrgestellrahmens;
• 2B den mit dem integrierten Liner versehenen Querträger gemäß der 2A in einer anderen perspektivischen Darstellung in einer Einzeldarstellung;
• 3 eine Schnittdarstellung in einer perspektivischen Ansicht durch den Querträger gemäß 2B;
• 4 eine Einzelheit II des Querträgers gemäß 3 in einer Schnittdarstellung;
• 5 eine Draufsicht auf ein Flanschende des erfindungsgemäßen Querträgers;
• 6 eine perspektivische Ansicht auf eine erste spezifische Ausführungsform eines in den Querträger integrierten Tankes;
• 7A-7D perspektivische Ansichten auf weitere spezifische Ausführungsformen des in den Querträger integrierten Tankes mit gleichmäßigen Querschnitten;
• 8A-8B perspektivische Ansichten auf weitere spezifische Ausführungsformen des in den Querträger integrierten Tankes mit ungleichmäßigen Querschnitten.

The invention will be explained below in embodiments with reference to the accompanying drawings. Show it:

• 1A a chassis frame of a commercial vehicle in a perspective view with a pulled out as a detail I cross member as a structural component of the chassis frame according to the prior art;
• 1B according to the cross member 1A in a perspective view according to the in 1A shown detail I;
• 2A a cross member according to the invention provided with an integrated liner in a first embodiment in a perspective view in longitudinal members of a chassis frame;
• 2 B the provided with the integrated liner cross member according to 2A in another perspective view in a single representation;
• 3 a sectional view in a perspective view through the cross member according to 2 B ;
• 4 a detail II of the cross member according to 3 in a sectional view;
• 5 a plan view of a flange of the cross member according to the invention;
• 6 a perspective view of a first specific embodiment of an integrated into the cross member tank;
• 7A-7D perspective views of further specific embodiments of the tank integrated in the cross member with uniform cross-sections;
• 8A-8B perspective views of other specific embodiments of integrated in the cross member tank with non-uniform cross-sections.

For the purposes of the description, the direction lying in the longitudinal direction of a vehicle shall be denoted by "x". "Y" denotes the direction in the horizontal of the vehicle transverse to the x-direction, and "z" denotes the direction in the vertical of the vehicle transverse to the x-direction. This designation of the spatial directions in Cartesian coordinates corresponds to the coordinate system commonly used in the automotive industry. Within all figures, the same reference numerals for the same components are used below, which may not be explained again in each figure again all components already presented by reference numerals.

The 1A shows a chassis frame 100 a vehicle, not shown, in particular commercial vehicle N in a perspective view with one as a detail I pulled out cross member 1 as a structural component of the chassis frame 100 According to the state of the art.

The commercial vehicle N includes several wheel axles Y1 . Y2 . Y3 , which are transverse to the longitudinal members 2 of the chassis frame 100 are arranged.

The chassis frame 100 has several cross beams 1' . 1 on, wherein at least one cross member 1 according to the 1A parallel to a wheel axle Y2 . Y3 of the commercial vehicle N at least near an axle suspension 3 (compare detail I ) is arranged.

The in 1A as a detail I pulled out cross member 1 has a longitudinal axis, in its extension directly the axle suspension 3 is trained.

The cross member designated 1 'is in contrast to the cross members 1 removed from the wheel axles Y1, Y2 and thus has no axle suspension in its extension.

The arranged between the longitudinal beams cross member 1 . 1' are claimed to train, pressure, bending and torsion, being close to an axle suspension 3 and / or directly in extension of the axle suspension 3 arranged cross member 1 must absorb larger tensile forces, compressive forces, bending forces and torsional forces as a cross member 1' , the remote of an axle suspension 3 is arranged.

An inventive with the reference numeral 10 provided cross member (see the following 2A to 8th ) is both close to an axle suspension 3 and / or immediately in extension of the axle suspension 3 according to the conventional cross member 1 and / or far from an axle suspension 3 according to the conventional cross member 1' locatable.

As in the 1A and 1B shown are the one-piece cross member 1 made of cast iron, while the one-piece cross member 1' designed as a steel structure. They have flanges or so-called flange ends 1A on.

The flange ends 1A serve on the one hand the attachment of the between the flange ends 1A as a hollow profile 1B trained cross member 1 . 1' at the respectively mostly U-shaped longitudinal members 2 and on the other hand in the in 1A in detail I shown embodiment, in which the cross member 1 immediately in extension of Axle suspension 3 is arranged. The axle suspension 3 is with the same screws as the cross member 1 . 1' on the side rails 2 attached. The screws are replaced by the axle suspension 3, the side member 2 and the flange end 1A inserted and on the inside of the flange plates of the flange ends 1A screwed into mother plates.

The following with reference to 2A to 8th explained cross member according to the invention 10 represents a structural component of a chassis frame 100 a vehicle, which is advantageously provided with an integrated tank, wherein the cross member 10 advantageously has a low weight and high rigidity.

The cross member according to the invention 10 is designed to be close to an axle suspension 3 and / or immediately in extension of the axle suspension 3 and / or the distance of an axle suspension 3 via the longitudinal members 2 in the cross member 10 introduced maximum occurring tensile forces, compressive forces, bending forces and torsional forces.

The 2A shows one with an integrated liner 10E (compare in advance 3 ) provided cross member 10 in a perspective view, in the illustrated embodiment directly in extension of the axle suspension 3 between the side rails 2 a chassis frame 100 is arranged.

The liner 10E and the connecting element 10B in combination form in the finished state of manufacture a pressure tank, in the stored medium is usually below a predetermined pressure deviating from the ambient pressure. Here comes the liner 10E the function of a sealing layer, while formed as a fiber composite laminate connecting element 10B receives the pressure of the medium, so that the pressure-absorbing function substantially through the connecting element 10B is effected.

The cross member provided with the integrated pressure tank 10 according to the 2A is in 2 B shown in a perspective view in a single representation.

The flange ends 10A differ according to the invention of the flange ends 1A the conventional cross member 1 . 1' according to the prior art according to the figures 1A and 1B , as will be explained below.

To reduce the weight of the cross member 10 formed in several parts and in a manufacturing method according to the invention, which will be explained below, the individual prefabricated components are interconnected or produced within the manufacturing process and made into a component assembly in a lightweight construction.

In other words, the cross member according to the invention 10 comprises the prefabricated components 10A, 10C, 10D, 10E and at least one component 10B , which is only in one of the intended manufacturing steps of the associated manufacturing process of the cross member 10 is formed.

The 3 shows a sectional view in a perspective view through the cross member 10 according to Figure 2B and the 4 shows a detail II of the cross member according to 3 in an enlarged sectional view. The 3 and 4 be subsequent to the components of the cross member 10 explained in detail in a synopsis.

The flange ends 10A or the flanges are prefabricated from steel or a cast steel material or preferably from a lightweight material, in particular an aluminum material or a plastic material.

The flange ends 10A are one piece preferably made of aluminum and either cast or milled from a solid material.

Due to the high tightening torques, the flange plates become 10A-1 the flange ends 10A provided with openings around the flange ends 10A via a through-bolt connection with the side members 2 to be able to connect. Where space-limited Durchsteckverschraubungen can not be realized, threaded bushes are screwed into blind holes in order to accommodate the screws and occurring torques can.

The flange ends 10A embrace on their to the liner 10E directed inside a circular circumferential flange groove 10A-11 , In the Flanschnut 10A-11 are in the assembled state each a prefabricated sliding bushing 10C and a prefabricated gasket 10D.

The flange ends 10A or in the embodiment of their flange plates 10A-1 each go from the inside of the flange ends 10A starting in the longitudinal direction y (y-direction) pointing flange receptacles 10A-2 over, the shell-like, with the flange shots 10A-2 on the one hand on the flange plates ( 10A-1 ) and into the Flanschnuten 10A-11 go over and on the other hand in each case a flange 10A-21 form.

Another prefabricated component is as a liner 10E educated. The liner 10E includes a neck on both sides 10E-1 and a cap 10E-2 where the diameter and the wall thickness of the neck 10E-1 with the diameter and the groove width of the flute grooves 10A-11 corresponds. The outer contour of the respective cap 10E-2 corresponds to the inner contour of the respective shell-like flange receptacle 10A-2 ,

By this above-described embodiment, the respective neck 10E-1 and the respective cap 10E-2 of the prefabricated liner 10E positive fit in the flanged grooves 10A-11 and the cup-shaped flange receptacle 10A-2 inserted form-fitting, in particular be plugged, the seals 10D for sealing against the flange ends 10A to care.

The crossbeam 10 forms in this state of assembly a form-fitting assembled from two components assembly component of the prefabricated flanges 10A and the liner 10E ,

In a preferred embodiment, the storage container 10E a so-called liner made of plastic (also called plastic bubble), wherein in particular a thermoplastic material with high density, in particular HDPE (HDPE stands for high density polyethylene, English: High Density polyethylene), is proposed, so that the prefabricated liner 10E can be inexpensively manufactured in a blow molding process, wherein during manufacture it is ensured that the liner 10E has a desired tightness against gaseous and / or liquid media.

In an alternative embodiment, the liner 10E made of another thermoplastic such as polyamide (abbreviation: PA) or polyoxymethylene (abbreviation: POM).

In principle, there is also the possibility that the liner 10E is prefabricated from a metal.

The choice of material depends on the desired stability of the liner, the weight and / or the tightness compared to those in the liner 10E stored medium depending on the physical and chemical properties of the medium in the liner 10E ,

The assembled to the assembly component components, the prefabricated flange ends 10A and the liner 10E , are joined together in a further manufacturing step by lamination.

Proposed is the formation of a connecting element 10B , which indirectly a firm connection between the previously form-fitting assembled flange ends 10A and the liner 10E is produced, wherein it is provided in a manufacturing manner, the connecting element 10B to produce as a wound fiber composite laminate.

The procedure is as follows: The liner 10E protective and the force between the flange ends 10A force-transmitting connection element 10B is applied as a fiber composite laminate (CFK here) in the wet winding process. The connection element 10B thus advantageously a multiple function. One function is the protection of the liner 10E , Another function is to absorb the forces caused by the pressure in the liner 10E stored medium come from. In addition, the connecting element takes over 10B as a further function the necessary power transmission between the flange ends in case of operation 10A as the previously only joined prefabricated components 10A and 10E after completion by means of the connecting element 10B indirectly connected to each other.

The connecting element 10B is on the flange receptacles 10A-2 the flange ends 10A and the liner 10E applied by the wet winding process.

The connecting element 10B surrounds after completion with its inner surface an outer surface of the Flanschaufnahme 10A-2 the flange ends 10A and an outer surface of the liner 10E. In other words, the liner 10E is advantageously indirectly via the connecting element 10B with the Flanschaufnahme 10A-2 the flange ends 10A fixedly connected. The materials of the liner 10E and the flange receptacle 10A-2 the flange ends 10A are thus not physically connected to each other, whereby the effect is achieved that the liner 10E temperature-dependent with a material expansion in the sense of the changing dimensions of the flange receptacle 10A-2 the flange ends 10A can move. The other coefficient of expansion having flange receptacle 10A-2 a flange end 10A is characterized in terms of the temperature-dependent material expansion in terms of changing dimensions in an advantageous manner of the liner 10E decoupled.

In an optional embodiment may be on the flanges 10A an adhesive may be applied so that the inner surface of the connecting element 10B and the outer surface of the flange receptacle 10A-2 of the flange ends 10A additionally glued together.

In an embodiment for producing the connecting element 10B in the wet winding process are winding combs 20 used in the prefabrication of the flange ends 10A considered and in the flange shots 10A-2 the flange ends 10A attached, in particular glued, be.

The winding combs 20 be annular on a predetermined outer circumference of the opposing Flanschaufnahmen 10A-2 arranged, with the teeth substantially orthogonal to the Flanschaufnahmen 10A-2 protrude.

To make a transition between the edges 10A-21 the flange receptacles 10A-2 and to ensure the liner 10E and thus the in the wet winding process between the flange ends 10A to the teeth of the winding combs 20 guided reinforcing fibers, in particular carbon fibers, as possible can be stored without kinks are - as in the 4 is made visible - circumferentially encircling wedge rings 10F frontally to the edges 10A-21 of the Flanschaufnahmen 10A-2 the flange ends 10A on the liner 10E placed.

After completion, that is after winding and curing of the connecting element 10B , the teeth of the winding combs become 20 broken off or severed, leaving only the winding comb back and the area of the teeth wrapped in the connecting element by the reinforcing fibers, in particular carbon fibers 10B remain.

In addition, in the transition between the flange plates 10A-1 and the flange receptacles 10A-2 on the outsides of the flange receptacles 10A-2 wells 10A-22 educated.

The advantage is that the connecting element 10B by the two-sided storage of the loops, the winding around the teeth of the winding combs 20 guided reinforcing fibers, in particular carbon fibers, in the through the recess 10A-22 formed undercut, a stationary and secure attachment of the connecting element 10B on the conically tapered contours of the flange receptacles 10A-2 the flange ends 10A causes.

Alternatively, as the production method instead of the wet winding process called the RTM process (abbreviation: Resin Transfer Molding) resin injection method can be used, the advantage is that the cross member side of the respective winding comb 20 and after completion in the cross member 10 remaining remnants of the winding combs 20 may be omitted if necessary. In the RTM process, the reinforcing fibers, in particular carbon fibers, are applied and, in contrast to wet winding, only subsequently impregnated. In the RTM process, a fiber plastic composite of a plastic matrix is used as a bedding compound of a thermosetting plastic, such as polyester, epoxy or phenolic resin, in which in turn reinforcing fibers einliegen.

As already explained, before was the liner 10E into the flange ends 10A used, wherein for sealing the liner 10E opposite the flange ends 10A the seals 10D are used. To accommodate different thermal expansion of the liner 10E preferably on both sides in the flange ends via the sliding bushes 10C 10A loosely mounted, the indirect stationary connection of the flange ends 10A finally done by means of the connecting element 10B.

A one-sided floating bearing of the liner 10E is also possible in principle. By the floating bearing on one or both sides is achieved in an advantageous manner that in the liner 10E No supercritical tensions arise, as in the operation of the commercial vehicle N on the flange ends 10A of the cross member 10 acting tensile forces, compressive forces, bending forces and torsional forces not on the liner 10E be transmitted.

It is intended that the liner 10E open at least one side. This is indicated by the liner 10E in principle at least one liner opening 10E -11 on. In the embodiment, the liner 10E at least one side of the neck 10E-1 with an opening 10E -11 in the assembled state in the flanged groove 10A-11 is inserted, wherein the flange plate 10A-1 a flange end 10A a flange opening 10A-12 that has the medium in the liner 10E over the liner opening 10E -11 and over the flange opening 10A-12 in the flange plate 10A-1 in at least one direction.

In the illustrated embodiment, the liner 10E open on both sides, so that the described embodiment is provided on both sides.

In the embodiment, the liner 10E thus open to both sides in the y-direction.

In the flange openings 10A-12 are preferably internal thread. On one of the internal threads, for example, an air supply and air discharge line of a closed circuit brake system of the commercial vehicle N connected, wherein it is provided that on the internal thread of the analogously formed opposite flange opening 10A-12 a drainage line of an openable drainage system is connected. There is also the option of a medium at the one flange opening 10A-12 feed and at the other flange openings 10A-12 dissipate.

As a presently preferred embodiment, the flange ends 10A made of aluminium prefabricated. The liner 10E is prefabricated from high density polyethylene. The prefabricated components 10A . 10E are joined together in a manufacturing step and by the connecting element 20 , which is preferably produced in the wet winding process as a fiber composite layer, joined together in a further manufacturing step. This possible combination of the described embodiments solves the problem that the cross member 10 as a structural component of the chassis frame 100 of the commercial vehicle N advantageously has an integrated pressure tank, wherein the cross member 10 has a very low weight and high rigidity. The weight saving is depending on the configuration of the cross member according to the invention 10 compared to conventional crossbeams 1 . 1' according to the figures 1A and 1B up to 60 percent. In addition, the advantage is that is gained in an advantageous manner by the integration of the pressure tank with simultaneous weight saving additional space.

A particularly large volume of the pressure tank is achieved by the fact that the liner 10E according to the 3 and 4 does not have a continuous circular cylindrical tube cross section.

A uniform pressure of the internal pressure of a liner 10E or the liner 10E receiving flange receptacle 10A-21 is one in longitudinal extension y the liner 10E seen constant circular cross-section, as used in known pressure vessels, of which according to the invention, in order to generate the largest possible storage volume, is abandoned.

A circular cylindrical cross section is in 5 with the line L3 characterized, having an inner diameter of the Flanschaufnahme 10A-21 or to illustrate an outer diameter of the liner 10E.

Shaping the flange end 10A and the liner 10E in a first embodiment:

As a requirement for the cross member 10 For example, given that all components of the cross member 10 not about the grid dimensions a and b the rectangular flange plate 10A-1 seen in the x and z directions (cf. 5 ) should protrude. It is understood that an embodiment in which the outer contour of the liner 10E about the grid dimensions a and or b the flange ends 10A goes, is basically possible.

According to the invention, it is provided that the associated flange receptacle 10A-2 (see 3 . 4 and 5 ) of the flange end 10A in longitudinal direction y has seen an inner contour with a predetermined inner diameter, with the outer contour of the liner 10E corresponds to a predetermined outer diameter, wherein the Flanschaufnahme 10A-2 goes from a circle contour into an elliptical contour.

An in 5 registered elliptical line L1 shows that the exemplified flange end 10A with the grid dimensions a and b the rectangular flange plate 10A-1 a Flanschaufnahme 10A-21 with an ellipsoid flange edge contour 10A-21 having.

Ellipses are defined by semiaxes. Semi-axes are the characteristic radii of an ellipse. There is a distinction between the large - here b1 - and the small semiaxis - here a1 -.

The big half-axle b1 is half the length of the largest diameter of an ellipse, which is also called the main axis. The shortest half diameter, which is exactly at 90 ° to the main axis, is the small half-axis a1 assigned.

In the 5 registered small semi-axis a1 corresponds to the maximum radius of the inner diameter of the ellipsoid flange edge contour 10A-21 the flange receptacle 10A-2 or the maximum radius of the outer diameter of the cap 10E-2 of the liner 10E in the region of the transition of the liner from the cap 10E-2 to a central body 10E-3 compare the dashed lines in the perspective view of FIG 6 of the liner 10E ,

With central body 10E-3 of the liner 10E becomes the part of the body of the liner 10E defined between the caps 10E-2 Consequently, in the assembled state between the flange edge contours 10A-21 of the Flanschaufnahmen 10A-2 is arranged as in the 3 and 4 is clarified.

The in the 5 and 6 registered diameter d2 refers according to the line L2 in 5 to the maximum circular outer diameter of the central body 10E-3 of the liner 10E in terms of the longitudinal extent y on a longitudinal axis y _s lying defined center of the liner 10 , The longitudinal axis y _s runs (compare 6 ) through the center M ,

In the 5 registered semi-major axis b1 corresponds to the maximum radius of the outer diameter d2 of the liner 10 in the defined center of the central body 10E-3 of the liner 10E.

The transfer of the elliptical cross-section of the caps 10E-2 of the storage container 10E in the area of the transition of the storage tank 10E from the caps 10E-2 to the central body 10E-3 to the circular cross-section of the liner 10E with the outer diameter d2 in the longitudinal extent y lying center of the central body 10E-3 takes place according to the invention tangentenstetig.

In synopsis with the 6 it becomes clear that the liner 10E in the first embodiment in each case opposite the neck 10E-1 and the cupped cap 10E-2 has, in the assembled state form-fitting in the Flanschaufnahmen 10A-2 (see 3 and 4 ) are arranged.

The opposite necks 10E-1 of the liner 10E are formed circular with the predetermined diameters d1.

The caps 10E-2 have analogous to the liner 10E a special contour, seen in longitudinal direction y geometrically from one to the caps 10E-2 adjacent circle contour of the necks 10E-1 with the diameters d1 go over into an elliptical contour.

In other words, to the necks 10E-1 subsequent circular caps 10E-2 be starting from the diameter d1 down to the maximum radius a1 (small semi-axis) of the outside diameter of the cap 10E-2 of the liner 10E in the area of transition of a liner from a cap 10E-2 to a central body 10E-3 enlarged to the elliptical cross section.

In other words, the caps 10E-2 are starting from an elliptical cross-section of the flange edges 10E-21 according to the line L1 with the maximum radius a1 in the direction of the necks 10E-1 tapered and go into the circular cross-section of the necks 10E-1 with the outside diameter d1 of the liner 10E above.

In 5 is based on the circular line L2 clarifies that the circular contour 10E-31 in the middle of the liner 10E with the maximum circular outer diameter d2 in the embodiment not on the grid dimensions a × b of the rectangular flange ends 10A goes.

In the illustrated embodiment is within the grid a × b of the rectangular flange ends 10A made sure that the memory contents or the volume of the liner 10E considering the in the liner 10E effective internal pressure is optimized, that is as large as possible under the given flange edge conditions. The geometric shape described thus provides in connection with the described flange edge conditions and as a function of the predefinable internal pressure and / or in dependence on the liner 10E acting from the outside forces an optimized shape of the liner 10E, thus the cross member 10 , dar.

Undoing the requirement that the outer contour of the liner 10E the grid dimensions a × b should not exceed the outer contour, that is, in the middle of the central body 10E-31 lying central outer diameter d2 of the liner 10E about the grid dimensions a × b of the rectangular flange plate 10A-1 the flange ends 10A be led out, reducing the volume of the liner 10E can be increased even further. In other words, the outer diameter d2 is set larger than the one or more pitches / ea and / or b.

In a particular embodiment of the first embodiment can also by canceling the default that the outer contour of the liner 10E the grid dimensions a × b, to react to a space situation, for example, in the space below the chassis frame 100 , thus below the cross member 10 but not above the chassis frame 100 is available. The example explained below is applicable to space situations in which space in the upper area in the + z-direction of the chassis frame 100 but not below the chassis frame 100 in z direction is available. It is understood that installation space situations may also be present, with only one-sided degrees of freedom for enlarging a liner in the +/- x direction 10E available.

A description of an alternative embodiment of the first embodiment with reference to the above-mentioned installation space situations 6 , for example, the space below the chassis frame 100 is available.

Starting from the through the longitudinal axis y _s running center M (see 6 ) of the central body 10E-3 of the liner 10E is provided in the alternative embodiment that the center M around a vertical dimension Δ-Z in the point M ' moved down. In other words, the center M of the central body 10E-3 of the liner 10E is no longer on the longitudinal axis y _s but below the longitudinal axis y _s , 6 shows that around the vertical dimension Δ-Z shifted central body 10E-3 with its circular contour 10E-31 who is no longer on the line L2 lies. If you connect the point M ' with the centers M " the half-axis intersections of the axes a1 the elliptical end sections of the elliptical flange edge contours of the caps 10E-21 Together, this results in a downwardly bent longitudinal axis, the 6 is shown as a dashed line. The displacement also changes the contour of the liner 10E between the flange edge contours of the caps 10E-21 , The lower wall area of the liner 10E that with the reference number L4-1 and the upper wall portion of the liner 10E , denoted by the reference character L4-4, are displaced vertically downwards in the -z direction. This will be in the area below the liner 10E used available space, while at the same time optimized by shaping the storage volume of the liner 10E is maintained.

The 7A to 7D show in perspective views specific embodiments of the in the cross member 10 integrated liner 10E but with uniform cross sections.

The 7A schematically shows a rectangular flange plate 10A-1 with the grid dimension a × b with a liner 10E in a second embodiment having a uniform ellipsoidal cross section, the length of the semiaxes a1 . b1 in such a way - according to a slot - are selected to each other, that the large semi-axis b1 is much longer than the small half-axis a1.

The uniform ellipsoidal cross section does not go beyond the grid dimension a × b of the rectangular flange plate 10A-1 out. A liner 10E with such a uniform ellipsoidal cross section takes advantage of the internal pressure forces and the outside of the operation of the cross member 10 on the liner 10E acting tensile forces, compressive forces, bending forces and torsional forces safely, wherein the storage volume through the selected with a large length large semi-axis b1 taking into account the favorable absorption of the internal pressure forces and the tensile forces, compressive forces, bending forces and torsional forces is relatively large. The selected uniform ellipsoidal cross-section can be used to generate the large storage volume of the liner 10E at least down to the grid a × b of the flange plate 10A-1 or even beyond that, so the measure 2 × b1 almost the measure b and the measure 2 × a1 almost the measure a equivalent.

The 7B schematically shows a rectangular flange plate 10A-1 of the flange end 10A with the grid dimension a × b with a liner 10E in a third embodiment with a uniform ellipsoidal cross section, the length of the semiaxes a1 . b1 are selected similar to the first embodiment, wherein the transverse to the longitudinal extent y of the liner 10E in the direction a and b of the grid extending semiaxes a1 . b1 are selected differently long, but without the grid dimensions a × b to go out.

This liner 10E takes advantage of the internal pressure forces and the outside of the operation of the cross member 10 on the liner 10E Although the storage volume, taking into account the favorable absorption of the internal pressure forces and the tensile forces, compressive forces, bending forces and torsional forces is smaller than in the second embodiment, but the liner is 10E easier to produce. The chosen uniform ellipsoidal cross-section can analogously to the second embodiment for generating the largest possible storage volume of the liner 10E at least down to the grid a × b of the flange plate 10A-1 or even beyond that.

The 7C schematically shows a rectangular flange plate 10A-1 with the grid dimension a × b with a liner 10E in a fourth embodiment having a uniform rectangular cross-section, which is transverse to the longitudinal extent y of the liner 10E extending symmetry axes of the uniform rectangular cross-section of the liner 10E in the ratio of the grid dimension a × b of the flange plate 10A-1 are selected, with the grid dimensions of the liner 10E are smaller than the grid size a × b of the flange plate 10A-1 of the flange end 10A , A liner 10E with a uniform rectangular cross section analogous to the shape of the flange plate 10A-1 is particularly easy to produce. A liner 10E with this selected shape takes advantage of the internal pressure forces and the outside of the operation of the cross member 10 on the liner 10E acting tensile forces, compressive forces, bending forces and torsional forces safely. The selected uniform rectangular cross-section can be used to generate the largest possible storage volume of the liner 10E at least down to the grid a × b of the flange plate 10A-1 or even beyond.

The 7D schematically shows a rectangular flange plate 10A-1 with the grid dimension a × b with a liner 10E in a fifth embodiment with a uniform circular cross-section, the same length semiaxes a1 . b1 the radius of the uniform circular cross-section of the liner 10E form. A liner 10E with a circular cross-section is particularly easy to produce and has good pressure stability in terms of values, which advantageously the internal pressure forces and the outside of the operation of the cross member 10 to the liner 10E acting tensile forces, compressive forces, bending forces and torsional forces are absorbed at low wall thicknesses. The selected uniform circular cross section can be used to generate the largest possible storage volume of the liner 10E at least up to the grid a × b of the flange plate 10A-1 or even beyond that.

8A-8B show in perspective views further specific embodiments of the cross member 10 integrated liner 10E With non-uniform cross sections, which represent modifications of the preferred first embodiment.

The 8A schematically shows a rectangular flange plate 10A-1 with the grid dimension a × b with a liner 10E in a sixth embodiment with in longitudinal extension y of the liner 10E formed different circular cross sections in a barrel shape.

The sixth embodiment is similar to the first embodiment, but the caps go off 10E-2 of the liner 10E in longitudinal direction y seen geometrically not from a circular contour in an elliptical contour over.

The outside diameter of the necks 10E-1 and the caps 10E-2 of the liner 10E and thus the inner diameter of the Flanschaufnahmen 10A-2 the flange ends 10A first go from a circular cross section of the necks 10E-1 of the liner 10E with the outside diameter d1 over the caps 10E-2 down to the middle of the central body 10E-3 continuously circular expanding in the outer diameter d2 in the middle of the central body 10E-3 over, so that the predeterminable outside diameter d1 of the necks 10E-1 is greater than the predetermined outer diameter d2 in the middle of the central body 10E-3 ,

The 8B schematically shows a rectangular flange plate 10A-1 with the grid dimension a × b with a liner 10E in a seventh embodiment with in longitudinal extension y of the liner 10E formed different circular cross sections in a double cone shape.

In the seventh embodiment, the caps go 10E-2 of the liner 10E seen in the longitudinal direction y geometrically also not from a circular contour in an elliptical contour over.

The outside diameter of the necks 10E-1 and the caps 10E-2 of the liner 10E and thus the inner diameter of the Flanschaufnahmen 10A-2 the flange ends 10A first go from a circular cross section of the necks 10E-1 of the liner 10E with the outside diameter d1 over the caps 10E-2 down to the middle of the central body 10E-3 continuously circularly tapering in the outer diameter d2 in the middle of the central body 10E-3 over, so that the predeterminable outside diameter d1 of the necks 10E-1 is smaller than the predetermined outer diameter d2 in the middle of the central body 10E-3 ,

The liners 10E with non-uniform cross-sections according to Figures 8A and 8B and the accompanying description have very good values in terms of their pressure stability, whereby the tensile forces, compressive forces, bending forces and torsional forces can be accommodated at low wall thicknesses in an advantageous manner. The selected non-uniform cross sections or the selected shapes can be used to generate a large storage volume of the liner 10E at least down to the grid a × b of the flange plate (s) 10A-1 or even beyond. In particular, the torsional moments in the operation of the cross member 10 on the liner 10E act in addition to the internal pressure forces and shear forces are particularly well received in the non-uniform shape.

With regard to the shaping is summarized that the selection depending on the available space for the cross member 10 within the chassis frame 100 and as a function of the largest possible storage volume of the liner 10E and as a function of the liner 10E acting internal pressure and taking into account the stability of the cross member 10 both during operation and in the event of a crash, securing the tensile forces, compressive forces, bending forces and torsional forces takes place within an optimization process taking into account the boundary conditions.

In this case, forms according to the invention were found out - in particular according to 6 , First embodiment and in particular according to Figure 8A, sixth embodiment - which are optimized with regard to the creation of a large storage volume, which ensure the recording of the maximum tensile forces, compressive forces, bending forces and torsional forces, both in operation and in the event of a crash, with low wall thicknesses are selected can to the weight of the cross member 10 to keep low.

In the various embodiments, an optimization is carried out with regard to the maximum storage volume, wherein the optimization is also made with respect to the maximum occurring during operation and in the event of a crash tensile forces, compressive forces, bending forces and torsional forces, so that the wall thicknesses of the liner 10E can be chosen as small as possible with a large storage volume to the weight of the cross member 10 overall decrease.

LIST OF REFERENCE NUMBERS

N

commercial vehicle

Y1, Y2, Y3

axles

100

chassis frame

1

Crossmember (prior art)

1'

Crossmember (prior art)

1A

Flange ends (prior art)

1B

hollow profile

2

longitudinal beams

3

Axle

10

Structural component, cross member (invention)

10A

flanging

10A-1

flange

10A-11

flange groove

10A-12

flange

10A-2

flange mounting

10A-21

Flange edge, flanged edge contour

10A-22

deepening

10B

connecting member

10C

bush

10D

seal

10E

Storage tank (liner)

10E-1

neck

10E-2

cap

10E-21

elliptical flange edge contour of the cap

10E-3

Central body

10E-31

circular contour of the central body

10F

wedge ring

20

winding ridge

a

Grid dimension of the flange plate 10A-1 of the crossbeam

b

Grid dimension of the flange plate 10A -1

a1

Half axis of an ellipse

d1

Outer diameter of a neck 10E-1 of the liner 10E

b1

Half axis of an ellipse

d2

Outer diameter of a central body 10E-3 of the liner 10E

L1

elliptical line

L2

circular line

L3

circular line

L4-1

Line of the lower wall area

L4-2

Line of the upper wall area

I

Detail according to 1A

II

Detail according to 3

M

Center of the central body 10E-3 of the liner 10E

M '

center point of the central body shifted by Δz 10E-3 of the liner 10E

M "

Center of the flange edge contour 10E-21 the cap 10E of the liner 10E

x

Longitudinal direction of a vehicle

+ x

Direction in the usual direction of travel of a vehicle

-x

Direction opposite to the usual direction + x

y

Direction in the horizontal direction transverse to the x-direction

y _s

longitudinal axis

z

Direction in the vertical direction transverse to the x-direction

Δ-Z

vertical dimension

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202013004660 U1 [0003]
• DE 202012102721 U1 [0004]
• DE 102011116656 B3 [0005]

Claims (12)

A structural member (10) for a chassis frame (100) of a vehicle (N) comprising at least one flange end (10A) connected to a storage container (10E) for attachment of the structural member (10) to the chassis frame (100) the at least one flange end (10A) has a flange receptacle (10A-2) which accommodates the storage container (10E) at its end, characterized in that the storage container (10E) has a geometry adapted to the at least one flange receptacle (10A-2) is optimized as a function of the forces acting on the storage container (10E) and allows a high storage volume. Structural component (10) according to Claim 1 , characterized in that the structural component (10) has two flange ends (10A) each having a Flanschaufnahme (10A-2), which receive the storage container (10E) on both sides, wherein the Flanschaufnahmen (10A-2) of the flange (10A) have inner contours that correspond to the outer contours of the storage container (10E). Structural component (10) according to Claim 1 , characterized in that a body of the storage container (10E) has two opposite necks (10E-1) each transitioning into opposed caps (10E-2), between the caps (10E-2) a central body (10E-3 ) of the storage container (10E) is formed. Structural component (10) according to Claim 2 and 3 , characterized in that the opposite necks (10E-1) in the assembled state positively engage in the Flanschenden (10A-1) and the respective opposite caps (10E-2) of the storage container (10E) in the assembled state form fit in the Flanschaufnahmen (10A -2), the flange receptacles (10A-2) each having a flange edge (10A-21) between which, in the assembled state, the central body (10E-3) is disposed as part of the body of the storage container (10E). Structural component (10) according to Claim 4 , characterized in that between the flange (10A) arranged body of the storage container (10E) seen in a longitudinal extent (y) of the structural component (10) has a uniform cross-section. Structural component (10) according to Claim 4 , characterized in that between the flange (10A) arranged body of the storage container (10E) seen in a longitudinal extent (y) of the structural component (10) has a non-uniform cross-section. Structural component (10) according to Claim 5 characterized in that the uniform cross-section of the body of the storage container (10E) between the flange ends (10A) is circular or elliptical or rectangular. Structural component (10) according to Claim 6 , characterized in that the non-uniform cross-section of the body of the storage container (10E) is barrel-shaped or biconical or circular / elliptical. Structural component (10) according to Claim 8 characterized in that the non-uniform circular / elliptical cross-section of the body of the storage container (10E) is such that circular cross-sections of the necks (10E-1) with one end-side adjacent circular caps (10E-2) in other end elliptical caps (10E-2) 2), which assume a circular cross section up to the center of the central body (10E-3) of the storage container (10E) lying in the longitudinal extent (y). Structural component (10) according to Claim 9 , characterized in that the circular cross-sections of the necks (10E-1) and the end subsequent circular cross-sections of the caps (10E-2) have a predetermined outer diameter (d1), wherein the other end formed elliptical cross-sections of the elliptical caps (10E-2 ) has the geometrically defined predetermined semi-axes (a1, b1; a1 ≠ b1) and the circular cross-section of the center of the central body (10E-3) of the storage container (10E) has a predetermined outer diameter (d2). Structural component (10) according to Claim 10 , characterized in that the small half-axis (a1) has a maximum radius of the inner diameter of the ellipsoidal flange contours (10A-21) of the flange receptacles (10A-2) and the maximum radius of the outer diameter (d1) of the caps (10E-2) of the storage container ( 10E) in the region of the transition of the storage container (10E) from the caps (10E-2) to the central body (10E-3), wherein the semi-major axis (b1) corresponds to the maximum radius of the outer diameter (d2) of the storage container (10E) the center of the central body (10E-3) of the storage container (10E-3) corresponds. Structural component (10) according to Claim 11 , characterized in that the transfer of the elliptical cross-section of the caps (10E-2) of the storage container (10E) in the region of the transition of the storage container (10E) from the elliptical caps (10E-2) to the central body (10E-3) to the in the center of the central body (10E-3) formed circular cross section of the Storage tank (10E) with the predetermined outer diameter (d2) is tangent-continuous.

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