DE102009035777A1 - Structural component for motor vehicle, has structural element form-fittingly connected with another structural element by wall area of hollow cross section profile deformed by internal pressure application - Google Patents

Abstract

The component (10) has a structural element i.e. bending cross beam (12), and another structural element i.e. energy absorption element (14), running perpendicular to the former structural element. The latter structural element exhibits a closed hollow cross section profile in a connecting area with the former structural component. The latter structural element is form-fittingly connected with the former structural element by a wall area of the hollow cross section profile deformed by internal pressure application. A fin structure (24) is made of plastic (22). An independent claim is also included for a method for manufacturing a structural component for a motor vehicle.

Description

The The invention relates to a structural component for a motor vehicle, according to the preamble of claim 1 and a method for producing such a structural component according to the preamble of claim 14. The invention relates also a structural component for a motor vehicle according to the preamble of claim 23 and a method for producing such a structural component according to The preamble of claim 24. Furthermore, the invention relates a structural component for a motor vehicle according to the preamble of claim 28 and a method for producing such a structural component according to the preamble of claim 32.

such Structural components are usually made Steel sheet metal or extruded aluminum parts produced, wherein Components of these structural components welded together and / or are bolted. Tool costs for the production of these structural components are to be counted as high and have a particularly negative effect low quantities out.

As well are pure structures made of fiber-reinforced plastics known which used for example as a bending beam in cars become. These pure, pressed structures made of fiber-reinforced plastic are very expensive and have a limited stretch and a limited one structural integrity on.

at the known solutions are energy absorption elements, so-called crash boxes, by means of screw mounted on bending cross members.

The known solutions have a high production cost and thus high production costs on.

It is therefore an object of the present invention, structural components for a To provide motor vehicles and methods for producing such structural components, which have low production costs.

These Task is governed by the objects of independent claims solved. Advantageous embodiments with expedient and non-trivial developments of the invention are in the dependent claims specified.

One inventive structural component for one Motor vehicle with a first structural element, in particular a Bending crossmember and with at least one transverse, in particular perpendicular, to the first Structural element extending further structural element, in particular an energy absorbing element connected to the first structural element is and which at least in the connection region with the first structural element has a closed hollow section profile is characterized characterized in that the further structural element via at least one by a Innendruckbeaufschlagung converted wall portion of the hollow section profile form-fitting is connected to the first structural element. This connection of the first with the further structural element as a result of an internal pressure allows an inexpensive and cost-effective production of the structural component.

This results from the fact that in the structural component according to the invention to the compound furthermore, with the first structural element, no further connecting elements of need are. In the context of the invention are substantially perpendicular to each other standing structural components, for example with closed profiles and board-like structures, which, for example, consist of an aluminum sheet or a consolidated, thermoplastic and fiber reinforced Plastic structure, in particular from an organic sheet, formed are unaufwendig connectable, wherein the resulting, inventive structural component high rigidity, high strength and high structural integrity in case an accident with low weight and low costs having.

at The first structural element may be, for example, a Bending crossmember in the form of a bumper beam one Acting motor vehicle, which in a front or in the rear area desselbigen is used. The bending cross member is on the described Way with at least one, but usually with two Energy absorption elements, which are referred to as crash boxes, connected. The energy absorption elements are ideally each case arranged symmetrically on both sides in each one end region of the bending cross member.

A particularly cost-effective but at the same time highly precise connection of the further structural element to the first structural element is made possible when the further structural element is positively connected to the first structural element via at least one wall region of the hollow cross-sectional profile which is deformed by an internal pressure application by a melt of a plastic. Advantageously, the structural component has a rib structure which is formed from precisely this plastic of the melt. Thus, in a manufacturing process of the structural component according to the invention, the plastic or the melt of the plastic is present anyway, which is why an additional pressure medium for the representation of the inside pressurization is obsolete. This reduces manufacturing costs of the structural component by a further measure.

At This point should be noted that instead of the melt of the plastic However, other fluids for the representation of the internal pressure can be used.

The Connection of the further structural element with the first structural element through the melt of the plastic is to be called melt-joining, because of a high pressure of the melt, which, for example 600 bar is, at least a wall portion of the hollow cross-sectional profile is formed, whereby the positive connection the first and the further structural element is formed.

in the Frame of the structural component according to the invention are also closed profiles with substantially perpendicular thereto overflowing open profiles at least one reshaped by an internal pressure Wall area connectable to each other. The joining method described, in particular the melt joining, represents a very precise Manufacturing process, which low manufacturing tolerances and low installation costs possible due to a reduction or elimination of adjustment expenses.

As already indicated, the first structural element is, for example from an aluminum sheet or even from a consolidated, thermoplastic fiber reinforced Plastic structure, an organic sheet, formed, which is itself in an organic sheet around a continuously fiber-reinforced thermoplastic can act, which for example made of polyamide or polypropylene is formed with glass fiber textiles and / or glass fiber fabrics. One Such organo sheet can also based on materials such Polyphenylene sulfide or thermoplastic polyurethane with carbon or aramid reinforcements be formed. For example, the organic sheet is also high Temperatures by deep drawing, bending or folding editable and by known welding methods fügbar. Likewise in the organo sheet fibers and / or ropes, in particular from a metallic material, be provided.

has the first and / or the further structural element at least one through opening, which with a plastic, in particular with the plastic of the melt, is penetrated, so this has the advantage that thereby a particularly firm connection between the plastic and the corresponding Structural element allows is. Such a passage opening, which thus allows a positive connection, can thereby punching or cut or the like may be formed.

As already indicated, the structural component has a ribbed structure from a plastic, which advantageously the plastic the melt is by means of which realizes the internal pressure is, by this rib structure a significant stiffening of the structural component according to the invention is reached.

The The invention also relates to a method for producing a structural component for one Motor vehicle, in which a first structural element, in particular a bender crossbeam, with at least one transverse, in particular perpendicular, to the first Structural element extending further extending structural element, in particular an energy absorbing element, which is connected at least in the connection region with the first structural element has closed hollow cross-sectional profile, which provided according to the invention is that the further structural element via at least one by a Innendruckbeaufschlagung deformed wall portion of the hollow cross-sectional profile with a positive fit the first structural element is connected. Advantageous embodiments of the first aspect of the invention, so the structural component, are as advantageous embodiments of the second aspect of the invention, So the process to look at and vice versa. The inventive method thus allows a cost-effective Production of the structural component with simultaneous realization less Manufacturing tolerances to form a highly rigid composite from the first and the further structural element.

in the Following is one possible embodiment the method according to the invention for making a possible embodiment of the structural component according to the invention described. It is understood that steps are omitted or added in a different order and / or in a different combination can be provided for producing alternative embodiments of the structural component according to the invention.

to Production of the structural component becomes the first structural element made from an aluminum sheet or from an organic sheet and at least one passage opening described above for a passage of a plastic punched out or cut out. Subsequently, the first structural element bent. Advantageously, for the connection with the other Structural element on the first structural element a bag-shaped, substantially to a cross-sectional shape of the further structural element corresponding Receiving trained, through which the further structural element at least is partially absorbable.

The so prefabricated first structural elements and the further structural element, For example, in the form of an energy absorbing element, then be placed in an injection mold and in a melt joining process provided with a plastic, for example, overmoulded, by a high pressure of a melt of the above plastic as a result of an internal pressurization by the melt, a wall area the hollow cross-sectional profile of the further structural element formed becomes. In this case, by this reshaped wall area a positive connection between formed the first and the further structural element.

In This step can also be done by the plastic to represent the Innendruckbeaufschlagung a rib structure for stiffening the structural component be formed. Likewise, the first structural element, for example essentially a bowl-shaped Have cross-section, in which the plastic and thus the rib structure be introduced. additionally can for further reinforcement and to protect the plastic, a lid with the first structural element be connected, which has the substantially cup-shaped cross-section to a closed hollow cross section and the first structural element added and thus covers the plastic.

Consists For example, the lid made of aluminum, so become the first structural element and the lid, for example, by a metal laser welding or by gluing on a flange connected to each other, as well the first structural element is formed from aluminum.

are the first structural element and the lid from above Organoblechen formed, they are for example about a Flange by a plastic hybrid laser welding (infrared and laser) with each other welded. At this point it should be noted that through the plastic flanges and / or Fastening devices for Attachments such as sensors can be formed. at such attachments may be, for example, a strut a distance control system or act on a front end strut. The mentioned Fastening devices are formed for example as clips.

The said encapsulation of the first structural element and the other Structural element and the formation of the rib structure happens with a high temperature and with a high pressure of the melt of the plastic. A further advantageous embodiment of the invention sees in that by means of the internal pressure by the melt the plastic in the first structural element and / or in the further structural element at least one bead is formed. This bead is, for example, by the plastic at least partially filled with the plastic.

When Beading is a trough-shaped Understanding deepening. The formation of the bead creates a positive Connection between the first structural element and the other Structural element, what the strength and rigidity of the thus produced Structural component further increased. In the formation of the bead and in the production of the positive connection For example, a use of at least one tool punch provided that so the deformation of the wall area active or passive supports. This means that the formation of the positive connection or the Beading by the internal pressure, for example by the Melt of the plastic at 600 bar, only through the melt takes place, with a passive support the formation of the compound or the bead is provided.

alternative a movable or displaceable tool punch can be provided be by his movement during the formation of the compound or the bead a shape of the wall portion supports and, for example, an undercut form fit between the first and the further structural element and between the plastic and the corresponding structural element allowed.

to additional Stiffening of the structural component according to the invention and to increase an energy absorption capacity This same is as additional Procedural step possible, that locally at least one foam body in a region of the further structural element and / or in one Center region of the first structural element, optionally between the rib structure is arranged. The foam body can for example from a metal foam, from an APM foam (Advanced Pore Morphology), made of a polyurethane foam or other plastic be.

In the arrangement of the foam body, in turn, there are several possibilities with regard to introducing a material of the foam body. In the region of the further structural element, the foam body can be supplied, for example, with a carrier and optionally treated subsequently with a heat treatment for curing the foam body or its material. In addition, the carrier may be formed of the same material as the rib structure and formed in the same process step. The foam body is then between the first structural element and the rib structure and / or between the further structural element and the first structural element, for example subsequently filled or injected into the structural component, wherein a heat treatment can be dispensed with.

In addition, can the advantage of a sheet metal construction, in particular of the first structural element of an aluminum sheet or an organic sheet so used at least one end region, ideally two-sided end regions, of the first structural element, in particular in the form of the bending cross member, narrower than to form the middle area, since there are burdens in these areas are lower. This advantage is with structural elements of extruded profiles not given. An integration or space creation for attachments such as sensors is flexible by adjusting the rib structure and outbreaks in this as well possible.

is the first structural element formed from an aluminum sheet, so there is the possibility of a additional Connection between the first and the further structural component through flow-forming screws such as pentaflow in addition to the melt joining, which also as Hydroclinchen is to be designated and in which the melt of the plastic as Stamp substitute may provide.

at a further advantageous embodiment of the second aspect the invention, the further structural element by a cohesive connection connected to the first structural element. This can be, for example be provided when the first structural element of a coated Sheet metal, for example made of aluminum, or of a fiber-reinforced plastic is formed, wherein the plastic acts as a matrix for the fibers. there is then the said coating, which for example from the the same material as the above-mentioned melt of the plastic exists, or the matrix, which, for example, from the same Material is formed as the melt of the plastic, melted and fused with the melt of the plastic or with the plastic, from which a cohesive and thus particularly strong connection between the plastic or the rib structure and the first structural element results.

One Third aspect of the invention relates to a structural component for a Motor vehicle with a first structural element, in particular a Bending crossmember and with at least one transverse, in particular perpendicular, to the first Structural element extending further structural element, in particular an energy absorption element, which is connected to the first structural element is connected and which at least in the connection area with the first structural element has a closed hollow cross-sectional profile, being provided according to the invention is that the other structural element through a Hydrostanznietprozess is connected to the first structural element. Also the Hydrostanznieten allows a firm connection between the two structural elements in realization of low manufacturing tolerances. In addition, in the Hydrostanznietprozess as well as a melt of a plastic as Die to produce a needed Counterpressure, so as a pressure medium, can be used.

Becomes by means of this melt or this plastic a rib structure trained as related to the first two aspects the invention has been described, this has the advantage that this melt is present anyway and thus an additional, Cost-causing pressure medium for the Hydrostanznietprozess is obsolete. This saves costs for the structural component according to the invention one.

One Fourth aspect of the invention relates to a method of manufacturing a structural component for a Motor vehicle, in which a first structural element, in particular a bender crossbeam, with at least one transverse, in particular perpendicular, to the first Structural element extending further structural element, in particular an energy absorption element is connected, which at least in the connection area with the first structural element a closed Hollow cross-sectional profile having provided according to the invention is that the other structural element through a Hydrostanznietprozess is connected to the first structural element. Advantageous embodiments of the fourth aspect of the invention are as advantageous embodiments of the third aspect of the invention and vice versa.

at an advantageous embodiment of the fourth aspect of the invention is an inserted punch rivet formed in the context of the Hydrostanznietprozesses such that optionally existing fibers or ropes at least one of the two structural elements be punched. These fibers or ropes are for example Components of a fiber reinforced Plastic or an organic sheet, from which, for example the first structural element is formed. By using a such punch rivets, with usually several punch rivets in the frame of the Hydrostanznietprozesses be these ropes or fibers are not severed, so that a through the ropes or Fibers formed structure in one of the two structural elements, especially in the first structural element, is preserved and a secure connection to the further structural element, in particular the energy absorption element, for example in the form of a crash box, is achieved.

At this point should be mentioned that the further structural component, in particular the energy absorption element, in all aspects of the invention advantageously by an extrusion process is made. Thus, there is the possibility of the further structural element to give any shape and any profile. moreover can thereby produced in a train several such structural elements and be reworked.

One fifth Aspect of the invention relates to a structural component for a Motor vehicle with a first structural element, in particular a Bending crossmember and with at least one transverse, in particular perpendicular, to the first Structural element extending further structural element, in particular an energy absorption element, which is connected to the first structural element is connected and which at least in the connection area with the first structural element has a closed hollow cross-sectional profile, being provided according to the invention is that the further structural element via a cohesive plastic compound is connected to the first structural element. As with the first four aspects of the invention indicated in which a material connection between the plastic and the first structural element or between the two structural elements in addition to the positive Connection or is provided for the Hydrostanznietprozess is in the fifth aspect the invention provided, that the further structural element primarily and possibly only one cohesive Plastic connection is connected to the first structural element.

One Sixth aspect of the invention relates to a method for manufacturing a structural component for a Motor vehicle, in which a first structural element, in particular a bender crossbeam, with at least one transverse, in particular perpendicular, to the first Structural element extending further structural element, in particular an energy absorption element is connected, which at least in the connection region with the first structural element a closed Hollow cross-sectional profile having provided according to the invention is that the further structural element via a cohesive plastic compound is connected to the first structural element. Advantageous embodiments of the fifth Aspect of the invention are as advantageous embodiments of sixth aspect of the invention and vice versa.

at the fifth and the sixth aspect of the invention is the cohesive plastic compound For example, formed such that a coating or a Plastic matrix of a fiber-reinforced plastic structure, in particular of the first structural element, possibly of the same material like a melt of a plastic through which a ribbed structure of the structural component is formed, is melted and so with this plastic is fused. This results in a cohesive and thus firm connection between the plastic matrix or the coating and the plastic, for example, on the further structural element by at least one passage opening passes through and thus connected by a positive connection with this is, thereby reducing the connection between the two structural elements is shown.

At It should be noted that the embodiments according to the invention the individual aspects of the invention readily combine with each other are. An example for is that according to the first Aspect of the invention also in the third or fifth aspect of the invention It may well be provided that the first structural element and / or the further structural element have at least one bead or through which the first structural element with the other Structural element form-fitting connected is. According to this Example are the others embodiments the different aspects of the invention in any combination combinable with each other.

has the structural component, for example, two crash boxes on, so will one of these crash boxes, for example with a 3-chamber profile manufactured, with a towing eye connection in the other crash box of the motor vehicle is integrated. In a junction to a Biege cross member of the Structural component may have a recess for the described rib structure be incorporated. A training of this crash box with a 5-chamber profile and an additional Exciting editing is also possible.

For the mentioned Towing connection is made a thread on the said crash box and milled a guide. to Improvement of the described positive connection between the plastic and the further structural element, in particular the Crash box, a slot is formed, which is made of plastic can be penetrated.

Out one of the towing connection opposite Front of the crash box material is milled out, resulting in a reduction a weight of the entire structural component is associated. It is For example, a processing of three cycles required.

Another variant for towing connection to the crash box is possible by joining two aluminum extruded profiles. When joining a form-fitting Connection can be made by a hydroforming or punching and a cohesive connection by welding.

A Production of the structural components according to the invention as well as the implementation the inventive method advantageously takes place with a single tool, which the Manufacturing costs keeps low. The structural components according to the invention and the methods of the invention enable an additional Integration of functional elements as well as a flexible installation space design with a low weight of the structural components. By the local Introduction of a foam body can the structural component while a high energy absorption potential be lent, what an accident behavior of the structural component clearly improved.

Further Advantages, features and details of the invention will become apparent the following description of several preferred embodiments as well as from the drawings. The above in the description mentioned features and feature combinations and the following mentioned in the description of the figures and / or in the figures alone shown features and feature combinations are not only in the each specified combination, but also in other combinations or used alone, without the scope of the invention to leave.

The Drawings show in:

1 two rear perspective views and a front perspective view of a structural part for a motor vehicle with a Biegequerträger and with two substantially perpendicular to the Biegequerträger extending energy absorbing elements, which are each connected via at least one deformed by an internal pressure wall portion with the bending beam,

2 in sections, a rear view of the connection of an energy absorption element to the bending cross member according to 1 .

3 a perspective rear view and a schematic longitudinal sectional view of an alternative embodiment of the structural component according to 1 in which foamed bodies are provided locally on the structural component,

4 a perspective view of a possibility for introducing a foam body in an energy absorbing element of a structural component according to the preceding figures,

5 a schematic view of a Hydrostanznietprozesses for connecting two substantially mutually perpendicular structural elements, wherein a melt of a plastic is provided as the pressure medium and

6 a schematic representation of a Hydrostanznietprozesses according to 4 , wherein a structural element is formed of a fiber-reinforced plastic structure.

In In the figures, like reference numerals designate like elements.

The 1 shows a structural component 10 for a motor vehicle, in which a bending cross member 12 with two substantially perpendicular to the bending cross member 12 extending energy absorption elements 14 and 16 connected is. The energy absorption elements 14 and 16 are in each, pocket-shaped shots 18 and 20 taken in some areas, whereby the connection between the energy absorption elements 14 and 16 with the bending cross member 12 is stiffened.

The energy absorption elements 14 and 16 have in the connection area with the bending cross member 12 each a closed hollow section profile.

The energy absorption elements 14 and 16 are with the bender crossbeam 12 each positively connected via at least one deformed by an internal pressure wall portion of the respective hollow section profile. The deformed wall region is formed by a melt joining process, in which the internal pressure is applied by a melt of a plastic 22 is pictured.

Again 1 can be seen, is still through the melt of the plastic 22 or through the plastic 22 a rib structure 24 formed, which is the structural component 10 gives a very high rigidity and strength.

Is the bending crossbeam 12 formed for example from a metal sheet with a coating or as a fiber-reinforced plastic structure with a plastic matrix, it can be provided, for example, that the coating or the plastic matrix by the melt of the plastic 22 melted and melted with the plastic 22 is melted, resulting in a solid, cohesive connection in addition to the described positive connection.

The bending crossmember 12 points in the area of the pocket-shaped receptacle 18 a passage opening 26 through which a towing loop can be passed and with a in the energy absorption element 14 integrated towing eye attachment tion and thus firmly with the energy absorption element 14 itself is connectable.

For further stiffening of the structural component 10 and to protect the rib structure 24 is a lid 28 provided, which via a flange 30 with the bending cross member 12 glued or welded.

The 2 shows a rear view of a portion of the structural component 10 in which the energy absorbing element 14 over the above-described positive connection with the bending cross member 12 connected is. Of the 2 clearly to be seen is the mentioned towing connection 32 which enter the energy absorption element 14 is integrated.

For connection of the energy absorption element 14 with the bending cross member 12 is a bead 36 at the energy absorption element 14 formed, which through a passage opening 44 of the bending crossmember 12 partially penetrates. Thus, the positive connection of the energy absorbing element 14 with the bending cross member 12 created. The same applies to the energy absorption element 16 analogous.

An area 34 represents a possibility, the bead 36 train. According to this option, the bead is 36 by a pressure of a melt 42 of the plastic 22 , which may be about 600 bar, designed such that the melt 42 the energy absorption element 14 or a wall region desselbigen through the passage opening 14 through suppressed. A movable tool stamp 38 supports the training and a shaping of the bead 36 actively supporting, with the tool punch 38 according to a directional arrow 40 is moved. This production of the bead 36 can be done for example in an injection mold, wherein by the melt 42 of the plastic 22 in this tool as well the rib structure 24 is trained.

An area 34 ' illustrates a training of the bead 36 by a passive support of a tool punch, which is not shown and not movable. Due to the high pressure of the melt 42 of the plastic 22 becomes the energy absorbing element 14 or a wall portion desselbigen formed and through the passage opening 44 pushed through. An active support by a movable tool punch 38 not done.

The 3 shows the structural component 10 according to the preceding figures, wherein the reference numeral 46 Points indicates which foam bodies can be arranged locally to improve an energy absorption potential of the structural component 10 What with an improvement in accident behavior of the structural component 10 and associated with a stiffening desselbigen.

A schematic longitudinal sectional view of the structural component 10 indicates possibilities, a first foam body 48 in a middle region of the bending crossmember 12 to arrange, as well as a second foam body 50 and a third foam body 52 into the corresponding energy absorption elements 14 respectively. 16 to integrate.

At this point it should be mentioned that the bending cross member 12 represents the shape of a first structural element, and that the energy absorbing elements 14 respectively. 16 represent the shape of each of a further structural element which extend perpendicular to the first structural element, are connected thereto and which have a closed hollow cross-sectional profile at least in the connection region with the first structural element.

The 4 clarifies the related 3 mentioned integration of a foam body in the corresponding energy absorption elements 14 and 16 , here representative of the energy absorption element 14 is shown.

This is in a chamber 54 of the energy absorbing element 14 a separate carrier 56 which is a plastic foam 57 carries, pickles and, if necessary, heat-treated, resulting in the plastic foam 57 expands and the chamber 54 fills. The energy absorption element 14 can have a single or multi-chamber profile, wherein the chambers of a metallic material in the context of an extrusion process and / or from the plastic 22 formed and possibly stiffened with a rib structure.

In an alternative possibility for introducing a foam body into the energy absorption element 14 a foam of the foam body in a two-component injection molding process in the energy absorption element 14 or a corresponding chamber injected and thus the chamber foamed without a necessary heat treatment.

In a further alternative possibility, a foam body, for example made of polyurethane, subsequently by an injection molding process for the formation of said rib structure 24 filled in the chamber.

The 5 shows an alternative or possibly additional connection possibility of the energy absorption element 14 with the bending cross member 12 by a Hydrostanznietprozess.

It is by means of a stamp 58 a punch rivet 60 in through a hold-down 62 held down bending cross member 12 and in the energy absorbing element 14 brought in. An opposing pressure medium in the form of a pressurized fluid is through the melt 42 of the plastic 22 shown in the preceding figures. By using the melt 42 of the plastic 22 as a holding pressure fluid an additional, cost-causing pressure fluid is avoided because the melt 42 of the plastic 22 anyway in the production of the structural component 10 is provided for producing the stiffening rib structure 24 ,

The illustrations A, B and C show gradually the introduction of the punch rivet 60 in the bender crossbeam 12 and the energy absorbing element 14 ,

The 6 shows the Hydrostanznietprozess according to 5 , wherein the bending cross member 12 Here is formed from a fiber-reinforced plastic structure.

Like in the 6 schematically and exemplified, is in the Hydrostanznietprozess a fiber 64 of the bending crossmember 12 through the punch rivet 60 punched and not severed during the Hydrostanznietprozesses. Thus, one remains through several fibers like the fiber 64 formed structure in the bending cross member 12 , which is present for example in the form of an organic sheet obtained, what rigidity properties of the bending cross member 12 benefits. At the same time, a secure and firm connection between the bending cross member 12 and the energy absorbing element 14 shown.

Claims (32)

Structural component ( 10 ) for a motor vehicle with a first structural element ( 12 ), in particular a bending crossmember ( 12 ), and with at least one transverse, in particular perpendicular, to the first structural element ( 12 ) extending further structural element ( 14 . 16 ), in particular an energy absorption element ( 14 . 16 ), which with the first structural element ( 12 ) and which at least in the connection region with the first structural element ( 12 ) has a closed hollow cross-sectional profile, characterized in that the further structural element ( 14 . 16 ) by way of at least one wall region of the hollow cross-sectional profile, which is shaped by an internal pressure application, in a form-fitting manner with the first structural element (FIG. 12 ) connected is. Structural component ( 10 ) according to one of the preceding claims, characterized in that the further structural element ( 14 . 16 ) via at least one by an internal pressure by a melt ( 42 ) of a plastic ( 22 ) formed wall portion of the hollow cross-sectional profile with the first structural element ( 12 ) connected is. Structural component ( 10 ) according to one of claims 1 or 2, characterized in that the first structural element ( 12 ) at least one pocket-shaped, substantially to a cross-sectional shape of the further structural element ( 14 . 16 ) corresponding recording ( 18 . 20 ), through which the further structural element ( 14 . 16 ) is included at least in some areas. Structural component ( 10 ) according to one of the preceding claims, characterized in that the structural component ( 10 ) a rib structure ( 24 ), which consists of a plastic ( 22 ) is trained. Structural component ( 10 ) according to one of the preceding claims, characterized in that the first structural element ( 12 ) and / or the further structural element ( 14 . 16 ) has or has at least one passage opening, which with a plastic ( 22 ) is penetrated. Structural component ( 10 ) according to one of the preceding claims, characterized in that the further structural element ( 14 . 16 ) by at least one undercut positive connection with the first structural element ( 12 ) connected is. Structural component ( 10 ) according to one of the preceding claims, characterized in that the first structural element ( 12 ) and / or the further structural element ( 14 . 16 ) at least one bead ( 36 ), by which the first structural element ( 12 ) with the further structural element ( 14 . 16 ) is positively connected. Structural component ( 10 ) according to claim 6, characterized in that the bead ( 36 ) at least partially with a plastic ( 22 ) is filled out. Structural component ( 10 ) according to one of the preceding claims, characterized in that in a central region of the first structural element ( 12 ) and / or in a region of the further structural element ( 14 . 16 ) at least one foam body ( 48 . 50 . 52 ) is arranged. Structural component ( 10 ) according to one of the preceding claims, characterized in that at least the further structural element ( 14 . 16 ) is produced by an extrusion process. Structural component ( 10 ) according to one of the preceding claims, characterized in that the further structural element ( 14 . 16 ) has an integrated thread. Structural component ( 10 ) according to one of the preceding claims, characterized in that the further structural element ( 14 . 16 ) a towing loop ( 32 ) having. Structural component ( 10 ) according to one of the preceding claims, characterized in that the further structural element ( 14 . 16 ) via a cohesive connection with the first structural element ( 12 ) connected is. Method for producing a structural component ( 10 ) for a motor vehicle, in which a first structural element ( 12 ), in particular a bending crossmember ( 12 ), with at least one transverse, in particular perpendicular, to the first structural element ( 12 ) extending further structural element ( 14 . 16 ), in particular an energy absorption element ( 14 . 16 ), which at least in the connection region with the first structural element ( 12 ) has a closed hollow cross-sectional profile, characterized in that the further structural element ( 14 . 16 ) by way of at least one wall region of the hollow cross-sectional profile, which is shaped by an internal pressure application, in a form-fitting manner with the first structural element (FIG. 12 ) is connected. Method according to claim 14, characterized in that the further structural element ( 14 . 16 ) is acted upon by means of a fluid with the internal pressure. Method according to one of claims 14 or 15, characterized in that the further structural element ( 14 . 16 ) by means of a melt ( 42 ) of a plastic ( 22 ) is charged with the internal pressure. A method according to claim 16, characterized in that by means of the plastic ( 22 ) a rib structure ( 24 ) is formed. Method according to one of claims 14 to 17, characterized in that by means of the internal pressure in the first structural element ( 12 ) and / or in the further structural element ( 14 . 16 ) at least one bead ( 36 ) is formed. Process according to claims 18 and 16, characterized in that the bead ( 36 ) at least partially with the plastic ( 22 ) is filled out. Method according to one of claims 14 to 19, characterized in that the further structural element ( 14 . 16 ) by at least one undercut positive connection with the first structural element ( 12 ) and connected. Method according to one of claims 14 to 20, characterized in that the further structural element ( 14 . 16 ) using at least one tool punch ( 38 ), in particular a movable tool punch ( 38 ), with the first structural element ( 12 ) is connected. Method according to one of claims 14 to 21, characterized in that the further structural element ( 14 . 16 ) by a material connection with the first structural element ( 12 ) is connected. Structural component ( 10 ) for a motor vehicle with a first structural element ( 12 ), in particular a bending crossmember ( 12 ), and with at least one transverse, in particular perpendicular, to the first structural element ( 12 ) extending further structural element ( 14 . 16 ), in particular an energy absorption element ( 14 . 16 ), which with the first structural element ( 12 ) and which at least in the connection region with the first structural element ( 12 ) has a closed hollow cross-sectional profile, characterized in that the further structural element ( 14 . 16 ) by a Hydrostanznietprozess with the first structural element ( 12 ) connected is. Method for producing a structural component ( 10 ) for a motor vehicle, in which a first structural element ( 12 ), in particular a bending crossmember ( 12 ), with at least one transverse, in particular perpendicular, to the first structural element ( 12 ) extending further structural element ( 14 . 16 ), in particular an energy absorption element ( 14 . 16 ), which at least in the connection region with the first structural element ( 12 ) has a closed hollow cross-sectional profile, characterized in that the further structural element ( 14 . 16 ) by a Hydrostanznietprozess with the first structural element ( 12 ) is connected. A method according to claim 24, characterized in that as a pressure medium for the Hydrostanznietprozess a melt ( 42 ) of a plastic ( 22 ) is used. A method according to claim 25, characterized in that by means of the plastic ( 22 ) a rib structure ( 24 ) of the structural component ( 10 ) is formed. Method according to one of claims 24 to 26, characterized in that in the Hydrostanznietprozess fibers ( 46 ) and / or ropes of the first structural element ( 12 ) remain at least predominantly imperforate. Structural component ( 10 ) for a motor vehicle with a first structural element ( 12 ), in particular a bending crossmember ( 12 ), and with at least one transverse, in particular perpendicular, to the first structural element ( 12 ) extending further structural element ( 14 . 16 ), in particular an energy absorption element ( 14 . 16 ), which with the first structural element ( 12 ) and which at least in the connection region with the first structural element ( 12 ) has a closed hollow cross-sectional profile, characterized in that the further structural element ( 14 . 16 ) via a cohesive plastic connection with the first structural element ( 12 ) connected is. Structural component ( 10 ) according to claim 27, characterized in that the cohesive connection at least partially from a coating of the first and / or the further structural element ( 12 . 14 . 16 ) is formed. Structural component ( 10 ) according to claim 27, characterized in that the cohesive connection at least partially made of a plastic of a matrix of the first and / or the further structural element ( 12 . 14 . 16 ) is formed. Structural component ( 10 ) according to one of claims 27 to 29, characterized in that the structural component ( 10 ) a rib structure ( 24 ), which consists of a plastic ( 22 ) is formed of the plastic compound. Method for producing a structural component ( 10 ) for a motor vehicle, in which a first structural element ( 12 ), in particular a bending crossmember ( 12 ), with at least one transverse, in particular perpendicular, to the first structural element ( 12 ) extending further structural element ( 14 . 16 ), in particular an energy absorption element ( 14 . 16 ), which at least in the connection region with the first structural element ( 12 ) has a closed hollow cross-sectional profile, characterized in that the further structural element ( 14 . 16 ) via a cohesive plastic connection with the first structural element ( 12 ) is connected.

Images