DE102009002777B4 - Versteifungsstrebe - Google Patents

Abstract

Stiffening strut (100) for a motor vehicle with a metal wire mesh (104) extending in the longitudinal direction of the strut, the metal wire mesh (104) being encapsulated by a plastic (102), the stiffening strut (100) being rigid, the stiffening strut (100) has at least one sensor means, the sensor means being encapsulated by the plastic (102) of the stiffening strut (100).

Description

The invention relates to a stiffening strut for a motor vehicle, a motor vehicle trim part and a motor vehicle.

Various structural reinforcements for vehicle bodies are known in the prior art. For example, is from the US 6,296,301 B1 discloses a structural reinforcement for a vehicle body, comprising a woven fiber material, which is penetrated and solidified with a fusible resin. This structural reinforcement is part of the body itself, with a stable overall composite is created by the fact that the composite material connects itself to the body parts. However, this gives rise to the problem of a complicated and complicated process, by means of which the fiber material is joined together with the resin and the body parts.

DE 42 15 427 A1 relates to a stiffened plastic article and an injection molding method for producing the same. GB 2 196 584 A1 discloses a stiffening element for a motor vehicle. The stiffening element has a metal insert or a mesh fabric which is embedded in a plastic. US 5,290,079 discloses a bumper for a motor vehicle, the bumper including a plastic surface, in which a mesh fabric is embedded. DE 10 2006 041 099 A1 discloses a frame member for a motor vehicle and a mounting arrangement of such a frame member on a motor vehicle body. DE 10 2005 033 030 A1 relates to a body stem of a motor vehicle having an end wall which separates a front engine assembly space from a passenger compartment of the motor vehicle, wherein a stiffening strut is provided, via which the aggregate partition wall is supported on a body cross member. US 6,315,326 B1 relates to a roll bar for a sports vehicle. The roll bar in this case has a body which follows the shape of the roll bar and consists of a two-dimensionally cast material having a ribbing. DE 199 58 605 A1 concerns a roof module of a vehicle roof with a roof outer skin and a sky, wherein at least one surface area of the roof outer skin made of plastic and below this surface area at least one antenna, in particular for mobile, between the roof outer skin and the sky is arranged. DE 195 21 793 C1 discloses a steering column for motor vehicles, which comprises struts as a support of the jacket tube in vehicle parts, of which at least one strut extends in the vehicle transverse direction.

In contrast, the present invention seeks to provide a stiffening strut for a motor vehicle, an improved motor vehicle trim part and an improved motor vehicle.

The objects underlying the invention are each achieved with the features of the independent claims. Preferred embodiments of the invention are indicated in the dependent claims.

According to the invention, a stiffening strut for a motor vehicle is provided with a metal wire fabric extending in the longitudinal direction of the strut, wherein the metal wire fabric is encapsulated by a plastic, wherein the stiffening strut is rigid. The properties of the stiffening strut can be influenced by almost any variation of the metal wire mesh in terms of diameter, weave construction and metal choice for both warp and weft, type of mesh and mesh density. A further adaptation of the properties lies in the suitable selection of a plastic, from which the metal wire mesh is encapsulated.

A stiffening strut is understood in the following to mean a strut which is provided spatially separated from the component to be stiffened and can be fixed to this component by fastening means for stiffening the component. The fixation can be achieved by a positive, non-positive or cohesive connection, in all cases, only the stiffening is fixed to the device selectively, d. H. at isolated points between the stiffener and component the positive, cohesive or material connection is achieved. Thus, a stiffening strut is understood, in particular, to mean no rib-shaped stiffening of a component, the ribs being connected in one piece with the component throughout.

Embodiments of the invention have the advantage that a highly stable stiffening material can be provided, which, despite its high stability due to the use of a metal wire mesh and the use of plastic has a low weight. Compared to common steel struts, weight savings of up to 85% can be achieved with almost the same mechanical properties. This is particularly relevant in the vehicle sector, since each weight saving ensures a reduced consumption of drive energy of motor vehicles.

On the one hand, high mechanical stability results from the fact that, due to the use of the metal wire mesh, an extremely high tensile strength is given. By the addition of the plastic is on the other hand ensures the compressive strength, which in total a composite material, for which the mechanical properties can be varied almost arbitrarily by appropriate choice of materials as mentioned above and which optimally combines the properties of plastic and metal.

The value is no anti-rust measures with respect to the metal wire mesh necessary because the metal wire mesh or metal wire mesh is encased in the plastic. While stiffening in motor vehicles by steel girders has been caused in many places in the state of the art, which in a corresponding manner had to be protected against corrosion, such corrosion protection is unnecessary by the use of the stiffening strut.

Another advantage over the prior art is that the stiffening struts can be made independently of other vehicle components. In only a single cost-effective, quick and simple operation thus only the stiffening strut and the part to be stiffened must be assembled, which eliminates the known from the prior art complex step of casting plastic on body and metal fiber material to obtain an overall composite.

Next, the stiffening strut according to the invention has at least one sensor means, wherein the sensor means is encapsulated by the plastic of the stiffening strut. By way of example, the sensor means are a pressure sensor and / or a pull sensor and / or a crash sensor and / or a sensor for measuring physical environmental conditions such as temperature or ambient brightness.

The implementation of corresponding sensor means in the stiffening strut itself has the advantage that corresponding sensor information can be detected in an optimal manner at critical points of the motor vehicle. If, for example, the sensor means are a pressure sensor, the occurrence of voltage peaks in the stiffening strut can be detected locally in a simple manner, in order to determine, in cooperation with other sensors of the motor vehicle, whether only an external force effect on the stiffening strut which is insignificant for vehicle occupants is present, or if there are overall signs of a current vehicle crash, in order to activate, for example, different safety systems of the motor vehicle, for. B. trigger airbags or tighten straps.

According to one embodiment of the invention, the stiffening strut has at least one bead, wherein the bead is formed to increase the bending stiffness of the stiffening strut. Through the use of beads in the stiffening strut, the flexural rigidity of the stiffening strut is further increased in a simple manner, whereby the mechanical stability of the stiffening strut is further optimized. This is a solution which is technically very simple to implement: If, for example, a mold is used to produce the stiffening strut into which the plastic is poured, then it suffices, with the appropriate amount of metal wire fabric, to depict the corresponding bead shape in the tool. Depending on the flexibility of the wire mesh, this assumes the intended shape by its own weight already when inserting into the tool. Alternatively or additionally, it is also possible that the wire mesh is pressed by the introduction of the plastic into the mold. Thus preferably a previous molding of the beads is not required.

According to a further embodiment of the invention, the stiffening strut has at least one reinforcing rib, wherein the reinforcing rib is arranged at a radius of the stiffening strut. Preferably, the reinforcing rib is arranged on a radius formed by the bead of the reinforcing strut. Due to the additional formation of reinforcing ribs, the stability of the stiffening strut is further increased given "break points", ie points at which the stiffening strut has a certain radius. Preferably, the reinforcing rib itself only has the plastic with which the metal wire mesh is cast. This results due to the one-piece stiffening strut and plastic reinforcing rib a highly stable overall composite, the weight increase of the stiffening strut is almost not changed by the introduction of the reinforcing ribs, since they consist of pure plastic material.

According to a further embodiment of the invention, the stiffening strut has an end piece on at least one end, wherein the end piece and the stiffening strut are integral, wherein the end piece is designed for fastening the stiffening strut to a motor vehicle trim part and / or a motor vehicle body part.

Thus, it is possible in a simple and rapid manner to attach the stiffening strut preferably made separately from the vehicle trim part and / or the vehicle body part to the motor vehicle trim part and / or motor vehicle body part. The end piece may be, for example, an end nipple, which in a corresponding counterpart recording is used. It can also be an eyelet and / or a latching means and / or a welding dome, with which the connection between the stiffening strut and the motor vehicle trim part and / or the motor vehicle body part is produced. Also possible are the use of special adhesive bonds and the use of a plastic other than an end piece, wherein in the latter case, preferably this other plastic is optimized in order to produce the connection with the motor vehicle trim part and / or the motor vehicle body part in the simplest possible, faster and safer way. In general, the end piece is used to produce a positive, material or non-positive connection with the motor vehicle trim part and / or the motor vehicle body part.

According to one embodiment of the invention, the stiffening strut further comprises at least a first plastic molded part, wherein the first plastic molded part is designed for mounting vehicle components. This first plastic molded part is in turn preferably formed integrally with the stiffening strut itself and also preferably consists exclusively of the plastic of the stiffening strut. The total weight of the stiffening strut is not significantly changed by the first plastic molding.

Under "vehicle component" is understood in the present case, any component of a motor vehicle, which is arranged loosely in the motor vehicle and which requires attachment to a rigid motor vehicle component to prevent thus occurring during movement of the motor vehicle whirling sounds or rattling noises, which are due to the loose Vehicle component is thrown against other vehicle components due to the movement of the motor vehicle and therefore resulting shaking movements. By holding the vehicle component by the first plastic part, a corresponding movement of the vehicle component is significantly restricted or prevented. This considerably reduces or avoids the need for a separate, expensive attachment of brackets to motor vehicle trim parts and / or motor vehicle body parts. So instead of arranging additional plastic brackets to automotive trim parts and / or motor vehicle body parts, it is sufficient here to provide these brackets in the form of the first plastic moldings together with the stiffening strut.

Corresponding first plastic molded parts can comprise, for example, screw-on domes, clips, or brackets or any type of retaining means for vehicle components. Vehicle components include, for example, electrical connection cables, cables for keyless entry antennas or hose lines, which can thus be kept out of the disk drive in a simple manner, particularly when using the reinforcing brace in a motor vehicle door. However, the first plastic molded part may also comprise, for example, retaining clips or latching hook elements for suspending sound insulation mats, recordings for latching windshield washing nozzles, recordings of hinges and erecting rods and their rest position clips.

According to a werteren embodiment of the invention, the stiffening strut on at least a second plastic molded part, wherein the second plastic molded part is designed to hold the stiffening strut itself to a motor vehicle trim part and / or a vehicle body part. In this case, the second plastic molded part in contrast to the first plastic molded part does not have the function of holding a vehicle component, but the second plastic molded part serves to hold the stiffening strut to corresponding motor vehicle trim parts and / or vehicle body parts themselves. Here, for example, any types of fastening means for holding the Reinforcement strut find use, such as locking means, or loops for the preparation of appropriate screw or rivet connections.

According to another embodiment of the invention, the metal wire mesh and the plastic form a penetration composite. In other words, here is not only a solid steel cable, for example, which is encapsulated only on the rope surface of plastic, but there is a network of metal wires, this network is interspersed by the plastic. However, this does not exclude that the metal wires themselves consist of other thin wire filaments, which in turn are not interspersed by the plastic itself.

The formation of a penetration composite material increases the overall stability of the stiffening strut.

According to a further embodiment of the invention, the stiffening strut has a Vorschwächungsstelle, wherein the Vorschwachtungsstelle is designed for a deformation of the stiffening strut in a predetermined direction from a predetermined force on the stiffening strut. This is of relevance, for example, if such a stiffening strut is arranged as a vehicle transverse stiffening element in the motor vehicle. In the event of a side impact, controlled stiffening of the stiffening strut may occur due to the Vorschwachtungsstelle be reduced side impact energy, but at the same time it can be ensured that the deformation of the stiffening strut takes place in a direction away from the motor vehicle interior. This basic principle can be extended to various arrangements of stiffening struts in a motor vehicle. For example, it is also conceivable that a stiffening strut, which is accommodated in a front hood of a motor vehicle, has a corresponding Vorschwachtungsstelle which ensures in a frontal crash of the motor vehicle that a kink-shaped folding of the hood takes place in a controlled manner for energy reduction According to a werteren embodiment of the invention the stiffening strut is designed as an electrical conductor. In other words, the stiffening strut serves to conduct the electrical current in the motor vehicle. For example, a stiffening strut, which is arranged on the transmission tunnel of the motor vehicle, could be used to realize a current routing of electrical components in the rear to electrical components in the front region of the vehicle. A battery of the motor vehicle could be accommodated for this purpose in the rear trunk, whereas the vehicle engine is housed in the front area, wherein at least partially the power supply from the battery to the engine is realized by the stiffening strut.

In a further aspect, the invention relates to a motor vehicle trim part with at least one stiffening strut, wherein the stiffening strut is arranged parallel to the plane of extent formed by the motor vehicle trim part on the motor vehicle trim part. By way of example, the motor vehicle trim part is a front hood or a rear hood or a vehicle door or a roof component of a motor vehicle.

In another aspect, the invention relates to a motor vehicle with a stiffening strut, wherein the stiffening strut is preferably arranged as a vehicle transverse stiffening element in the motor vehicle. In the prior art, corresponding motor vehicle transverse stiffeners are usually steel tubes with welded-on further functional elements. Such functional elements are end plates with holes and bends, steel struts, also with bends and openings for connection to center consoles, pedal blocks, steering wheel holders and glove compartments and smaller elements such as weld nuts. By now instead a stiffening strut is used, which has a metal wire mesh, which is encapsulated with a plastic, a significant weight saving of the vehicle transverse reinforcement element can now be ensured with constant stability. In addition, as already described above, by the use of first plastic moldings, which are integrally formed with the stiffening strut, a replacement for the above-mentioned functional elements can be provided.

As a further site of a transverse reinforcement strut, for example, the tailgate of the motor vehicle is conceivable. In particular, it is advisable again to arrange appropriate functional elements on the stiffening strut with, such. B. attachment points for rear wiper or windscreen washer nozzles themselves.

It should be noted that the stiffening struts can assume an almost arbitrary geometric shape, which is suitable to meet corresponding mechanical requirements. It is possible, for example, the formation of H-shaped profiles, T-shaped profiles, general polygonal profiles, for example in the form of a triangular or quadrangular shape, round profile shapes, in particular for all hollow sections within a weight saving preferably only the profile coat can have a corresponding metal mesh and otherwise the cavity surrounded by the jacket is filled with plastic.

It is thus possible, for example, to produce a very sturdy tube in a perforated composite construction by spirally winding a steel cord fabric band onto an extruded plastic tube and then encapsulating it with plastic whose total weight is considerably lower than that of a corresponding steel tube with similar mechanical properties. During Umspritzungsvorganges, as in the metal diecast, welded in the steel technology functional elements, as already mentioned above, can be sharpened directly with. If the functional elements are levers or struts, steel cable belts can be inserted here for reinforcement.

In the following, preferred embodiments of the invention are explained in more detail with reference to the drawings. Show it:

1 a schematic view of a stiffening strut,

2 a schematic view of a motor vehicle door with a stiffening strut,

3 schematic cross-sectional views of various stiffening strut profiles and a stiffening strut with reinforcing ribs,

4 a schematic view of a stiffening strut with beads,

5 a schematic view of a motor vehicle front hood with stiffening struts.

Hereinafter, similar elements will be denoted by like reference numerals.

The 1 shows a schematic view of a stiffening strut 100 wherein this stiffening strut comprises a metal wire mesh. The metal wire mesh is in the present case, for the sake of simplicity not as tissue, but only in the form of parallel metal wires 104 shown. In practice, however, these metal wires 104 either interwoven or intertwined or twisted together. The metal wires 104 may in turn consist of wire filaments, which in turn are interwoven or intertwined within each other within a metal wire.

The stiffening strut 100 is from a plastic 102 cast over, leaving cavities 106 passing through the metal wire mesh 104 formed sores, from the plastic 102 are permeated. This results in a total of a Durchdringungsverbundwerkstoff with optimal mechanical properties.

The 2 shows a schematic view of a motor vehicle door 200 , The vehicle door 200 as a covering part has hinges 204 on, by means of which the vehicle door 200 can be screwed to a motor vehicle body. A castle 202 On the opposite side of the hinges makes the operative connection with the bodywork. In order to minimize the risk of injury to vehicle occupants, in particular in the event of a side impact, the vehicle door should be as stiff as possible 200 desired. This rigidity was in the prior art by the installation of appropriate steel profiles in the vehicle door 200 guaranteed. Although this ensures a high level of security, however, it does mean that the motor vehicle door as a whole becomes very heavyweight. For example, the additional weight of a conventional door strut with 1 m length, consisting of 1.5 mm sheet steel with a sheet width of 100 mm is approximately 1.2 kg.

The task of the strut is, inter alia, to increase the resistance to intrusion of larger objects into the interior during a side impact. Part of the impact energy is to be absorbed by deformation and also large parts of the energy to be distributed to the Türrahmenteile, which are usually carried out reinforced. Such struts can be designed in the prior art as a hollow profile tubes, but also as bent stamped and bent parts. These parts are connected in the prior art with the door reinforcement area by welding, gluing or by separate fasteners, such as screws or rivets.

Like in the 2a shown, but instead the stiffening strut according to the invention 100 are used, which preferably connects mutually opposite connection points of the motor vehicle door to the vehicle body. In the present case the 2a this is a connection of the lower hinge 204 with the castle 200 , In case of 2 B even comes a coupled door stiffening strut 100 used, creating a connection between both hinges 204 and the castle 202 is reached.

A typical door stiffening strut using, for example, polypropylene of similar dimensions to the prior art steel door strut, d. H. at 1 m length, 1.5 mm thickness and even 120 mm width results in an average weight saving of 85%, since such a strut only weighs less than 200 g. Thus, if corresponding stiffening struts according to the invention are installed in a large number of motor vehicle trim parts, such as motor vehicle doors, front or rear hoods, in the motor vehicle roof or other motor vehicle components, a significant overall weight reduction of the motor vehicle can be effected in a simple and cost-effective manner.

The 3 shows various cross-sectional views of stiffening strut profiles. For example, it is T-shaped profiles 310 , rectangular profiles 312 , triangular profiles 316 , Profiles with curved components for optimal power distribution, such as the profit 314 , or even profiles, which in addition to horizontal components and V-shaped components which are arranged on the horizontal components (see profile 318 ).

In the case of hollow sections 312 and 316 can have corresponding cavities 306 and 304 be filled, for example, by the plastic of the stiffening strut, whereby the mechanical stability, in particular the compressive strength, is further increased. For weight saving reasons, however, it is also possible to use the cavities 306 and 304 not to be completed.

In the 3b is a view of a stiffening strut 100 shown, with the stiffening strut 100 different breakpoints 302 having. At these breakpoints 302 is in each case a reinforcing rib 330 arranged. Through the reinforcing ribs 330 receives the stiffening element 100 at the break points the required stability in order to transmit in an optimal manner acting on the stiffening element moments and forces can.

Furthermore, in the 3b a tail 308 shown, in the present case in the form of a nipple, which can be used in a corresponding counter-receiving a motor vehicle trim part or a part of the vehicle body. The tail 308 here has a taper of the diameter 320 on, whereby the tail undergoes an H-shaped configuration. The taper here represents the crossbar of the H. If now the corresponding counter-piece receiving is formed so that only the taper of the H-shaped end piece is received, so a positive connection of tail and motor vehicle body or motor vehicle trim part is granted in a simple manner, both can be loaded on train as well as on pressure, and which can be mounted in a simple manner by a mechanic.

The 4 shows a further schematic view of a stiffening strut 100 , wherein the stiffening strut beads 404 having. These beads significantly increase the flexural stiffness of the stiffening strut. Also in the 4 again shown are reinforcing ribs 330 which are arranged on the Radii formed by the beads.

Instead of using stiffening ribs 330 , which at the Radii of the stiffening struts 404 are arranged, it is also possible through the Radii of the stiffening struts 404 formed cavities completely filled with the plastic of the stiffening strut.

Furthermore, in the 4 a first plastic molding 402 shown, which serves in the present case, a cable element 400 to hold the motor vehicle elastic. The first plastic molded part is designed as a cable clamp and forms with the stiffening strut 100 an integral unit.

The 5 shows a motor vehicle front hood, in particular a hood 500 , On the front hood 500 are again different stiffening struts 100 arranged. These stiffening struts connect the corners of the front hood 500 with each other, in particular emanating from the corners of the bonnet stiffening struts 100 all with a circular stiffening strut 100 , which is arranged centrally on the front hood, are coupled. Due to the circular design of the stiffening strut 100 This can be effected in a particularly optimal manner, a force distribution within the stiffening strut assembly.

Further stiffening struts of the bonnet 500 are the parallel to the bonnet edges extending stiffening struts.

The stiffening struts 100 are now configured with corresponding first plastic moldings, wherein the respective first plastic moldings and the stiffening struts form an integral overall composite. Thus, for example, the stiffening struts different fasteners 502 arranged for an insulating mat of the front hood. The first plastic moldings also include fasteners 504 for a windscreen cleaning hose, a receptacle 506 for a lock bracket of the front hood, a receptacle 508 for a Aufstellstange the bonnet and shots 508 for the cleaning nozzles, which are arranged on the front hood.

With such a construction, in addition to weight reduction additional costs can be limited by a high degree of integration. This technique also allows for production with pre-assembled modules that could be delivered ready to install to the automobile line.

Stiffening struts as in 5 can also be used as reinforcements in the roof area of a motor vehicle, especially when the original roof structure is weakened by openings, sliding and lifting roofs.

As mentioned above, it is preferably in the stiffening struts 100 around penetration composites. Application-specific guarantees that the different advantages of the individual materials in the end product are combined and corresponding disadvantages are excluded.

Preferably steel wires are used here. By further processing to a rope and then to a fabric, the tensile strength is maintained. The tensile strength of a fabric production can be varied independently by selecting the warp and weft ropes. In comparison with the prior art, such a variation of the tensile strength is not the case with solid sheets. The tensile strength in this case is approximately the same in all directions.

The processing of thin steel wires to ropes and then to fabrics allows for a flexibility that depends on the quality of the steel wire, the rope construction and the mesh density. The flexibility of the fabric makes it possible, as already mentioned, to insert the fabric into a plastic injection molding tool without corresponding preforming, wherein the closing force of the tool is sufficient to press the tissue into a predetermined shape. The necessary rigidity is then produced by molding with a plastic.

It should be noted, however, that not only plastic injection molding techniques can be used for producing the stiffening struts according to the invention, but any type of known production method by means of which a metal wire mesh can be encapsulated by a plastic.

The bending strength of the overall composite of metal wire mesh and plastic is also in the stiffening struts 100 in the 5 predominantly determined by the material properties of the plastic. The use of beads further increases the flexural strength. However, due to the tensile strength of the integrated metal wires, bending of the stiffening strut increases its strength.

It should be noted that the penetration of the plastic through the meshes of the fabric results in a significantly higher bonding force than in the case of pure laminates.

The functional elements such as ribs, Anschraubdome, headband and clips and spring arms can be molded, for example, directly to the stiffening strut. Also, the part thus produced in 2K technique can be supplemented with other elements of another plastic. This can also be an extruded sealing lip of an elastomer.

Also possible is the production of thin, large-area parts with greatly increased pressure resistance. For example, hoods can be made due to trim parts of corresponding composite materials, which have a metal wire mesh, which is encapsulated by a plastic as described above. In addition to a low weight such paneling have the advantage that can be painted in the car color by the use of plastics in a simple manner. Front end parts, mirror housings or any vehicle parts can be integrated into existing motor vehicle development series in a simple and cost-effective manner.

It is also possible to combine stiffening struts according to the invention together with laminar composite materials, consisting of a metal wire mesh and a cast plastic. In this case, either two separately produced composite elements can be joined together or even both composite elements can be produced in a manufacturing process. For this purpose, in particular for the production of hollow chamber profiles, processes such as "water" or "gas injection" are available.

LIST OF REFERENCE NUMBERS

100

Versteifungsstrebe

102

plastic

104

Metal Wire Mesh

106

cavity

200

Motor vehicle door

202

lock

204

hinge

302

inflection point

304

cavity

306

cavity

308

tail

310

profile

312

profile

314

profile

316

profile

318

profile

320

rejuvenation

330

rib

400

cable element

402

cable clamp

404

Beading

500

bonnet

502

first plastic molding

504

first plastic molding

506

first plastic molding

508

first plastic molding

Claims (14)

Stiffening strut ( 100 ) for a motor vehicle with a metal wire mesh extending in the longitudinal direction of the strut ( 104 ), wherein the metal wire mesh ( 104 ) of a plastic ( 102 ), wherein the stiffening strut ( 100 ) is rigid, wherein the stiffening strut ( 100 ) has at least one sensor means, wherein the sensor means of the plastic ( 102 ) of the stiffening strut ( 100 ) is poured around. Stiffening strut ( 100 ) according to claim 1, wherein the stiffening strut ( 100 ) at least one bead ( 404 ), wherein the bead ( 404 ) to increase the bending stiffness of the stiffening strut ( 100 ) is trained. Stiffening strut ( 100 ) according to claim 1 or 2, wherein the stiffening strut ( 100 ) at least one reinforcing rib ( 330 ), wherein the reinforcing rib ( 330 ) at a radius of the stiffening strut ( 100 ) is arranged. Stiffening strut ( 100 ) according to claim 3, wherein the reinforcing rib ( 330 ) at one through the bead ( 404 ) formed radius of the stiffening strut ( 100 ) is arranged. Stiffening strut ( 100 ) according to any one of the preceding claims, wherein the stiffening strut ( 100 ) on at least one end a tail ( 308 ), wherein the end piece ( 308 ) and the stiffening strut ( 100 ) are integral, wherein the end piece for fastening the stiffening strut ( 100 ) on a motor vehicle trim part ( 200 ; 500 ) and / or a motor vehicle body part is formed. Stiffening strut ( 100 ) according to any one of the preceding claims, wherein the stiffening strut ( 100 ) Furthermore, at least a first plastic molded part ( 402 ; 502 ; 504 ; 506 ; 508 ), wherein the first plastic molded part is designed for mounting vehicle components. Stiffening strut ( 100 ) according to any one of the preceding claims, wherein the stiffening strut ( 100 ) further comprises at least a second plastic molded part, wherein the second plastic molded part for holding the stiffening strut ( 100 ) is formed on a motor vehicle trim part and / or a motor vehicle body part. Stiffening strut ( 100 ) according to one of the preceding claims, wherein the sensor means are a pressure sensor and / or a tension sensor and / or a crash sensor and / or a sensor for measuring physical environmental conditions. Stiffening strut ( 100 ) according to one of the preceding claims, wherein the metal wire mesh ( 104 ) and the plastic ( 102 ) form a penetration composite. Stiffening strut ( 100 ) according to any one of the preceding claims, further comprising a pre-weakening point, said pre-weakening point for deformation of said reinforcing brace ( 100 ) in a predetermined direction from a predetermined force on the stiffening strut ( 100 ) is trained. Stiffening strut ( 100 ) according to one of the preceding claims, wherein the stiffening strut is formed as an electrical conductor. Motor vehicle trim part with at least one stiffening strut ( 100 ) according to any one of the preceding claims, wherein the stiffening strut ( 100 ) is arranged parallel to the extension plane formed by the motor vehicle trim part on the motor vehicle trim part. Motor vehicle trim part according to claim 12, wherein the motor vehicle trim part is a front hood ( 500 ) or a rear hood or a vehicle door ( 200 ) or a roof component of a motor vehicle. Motor vehicle with at least one stiffening strut ( 100 ) according to one of the preceding claims 1 to 11 wherein the stiffening strut ( 100 ) is arranged as Fahrzeugquerversteifungselement in the motor vehicle.

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