DE102009002777A1 - Reinforcement bar i.e. electrical conductor, for use in front hood of motor vehicle, has metal wire mesh extended in longitudinal direction and encapsulated by plastic such that bar is rigid - Google Patents

Abstract

The bar (100) has a metal wire mesh (104) extended in a longitudinal direction. The metal wire mesh is encapsulated by plastic (102) such that the bar is rigid. A reinforcement rib is arranged at a radius of the bar, where the radius is formed by a reinforcing seam. An end piece is provided for fastening the bar at vehicle components such as lining and/or body part. A plastic molded part is provided for retaining the vehicle components. Sensors e.g. pressure sensor, strain sensor and crash sensor, are surrounded by the plastic.

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.

In contrast, The invention is based on the object, a stiffening strut for a motor vehicle, an improved motor vehicle trim part and to provide an improved motor vehicle.

The The objects underlying the invention are each with the Characteristics of the independent claims solved. Preferred embodiments of the invention are in the specified dependent claims.

According to the invention a stiffening strut for a motor vehicle with a in the longitudinal direction of the strut extending metal wire fabric created, wherein the metal wire mesh encased in a plastic is, wherein the stiffening strut is rigid. The properties of Stiffening brace can be made by almost any variation of metal wire fabric in terms of diameter, fabric composition and Metal choice for both warp and weft, type of fabric braid and mesh density are affected. Another adaptation of the Properties lies in the proper choice of a plastic, from which the metal wire mesh is cast.

Under a stiffening strut is understood in the following to be a strut, which spatially separated from the component to be stiffened is provided and on this device by fasteners can be fixed to stiffen the component. The fixation can thereby by a positive, cohesive or material Be achieved, in all cases only the stiffening on the component is fixed selectively, d. H. at isolated points between stiffening and structural element positive or cohesive connection is achieved. Consequently is under a stiffening strut, in particular no rib-shaped stiffening of Component understood, the ribs consistently in one piece connected to the component.

embodiments The invention has the advantage that a highly stable stiffening material can be provided, which despite its high stability due to the use of a metal wire braid and its use of plastic has a low weight. Compared to common ones Steel braces can be used at almost the same mechanical level Properties weight savings up to 85% can be achieved. This is therefore particularly relevant in the vehicle sector, as any weight savings ensures a reduced consumption of drive energy of motor vehicles.

A high mechanical stability is the result of that due to the use of metal wire mesh an extremely high tensile strength is given. By the addition of the plastic On the other hand, the compressive strength is ensured, bringing a total a composite material is created for which the mechanical Properties almost arbitrary by appropriate choice of materials such as is variable above and which optimally the Properties of plastic and metal combined.

Of Further, there are no anti-rust measures regarding the Metal wire mesh necessary because the metal wire mesh or Metal wire mesh is encased in the plastic. While in the State of the art in many places stiffening in motor vehicles Steel beams are effected, which in a corresponding manner had to be protected against corrosion, unnecessary Thus, such a corrosion protection by the use of the stiffening strut.

One Another advantage over the prior art is that the stiffening struts independent of other vehicle components can be produced. In a single one cost-effective, quick and easy work step thus only the stiffening strut and the part to be stiffened be joined together, which of the prior art known elaborate step of casting on Plastic on body and metal fiber material to obtain a total composite eliminated.

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, bringing the mechanical Stability of the stiffening brace 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.

To a further embodiment of the invention, the Stiffening strut at least one reinforcing rib, wherein the reinforcing rib is at a radius of the stiffening strut is arranged. Preferably, the reinforcing rib at a radius formed by the bead of the stiffening strut arranged. Due to the additional training of reinforcing ribs continues the stability of the stiffening brace given "break points", that is, places where the stiffening strut one certain radius has increased. Preferably, the Reinforcing rib itself only the plastic on, with which the metal wire mesh is cast. This results from the one-piece nature stiffening brace and plastic reinforcement rib a highly stable composite, with the increase in weight of the stiffening strut by introducing the reinforcing ribs almost not is changed, because these are made of pure plastic material consist.

To a further embodiment of the invention, the Stiffening strut at least one end of an end piece on, with the tail and the stiffening strut in one piece are, with the tail to attach the stiffening strut to a motor vehicle trim part and / or a motor vehicle body part is trained.

In order to it is possible in a simple and rapid manner, preferably separate from the vehicle trim part and / or the vehicle body part made stiffening strut on the motor vehicle trim part and / or motor vehicle body part. At the tail can it may be, for example, an end nipple, which in a appropriate counter-recording is used. It may also be an eyelet and / or a locking means and / or act a sweat dome, with which the connection between the stiffening strut and the vehicle trim part and / or the vehicle body part is made. Possible are also the use of special adhesive joints and the Using a plastic other than the end piece, wherein in the latter case, preferably this other plastic to the effect is optimized to be as simple, faster and safer Way the connection with the motor vehicle trim part and / or manufacture the motor vehicle body part. Generally that serves End piece for producing a positive, material or non-positive Connection to the motor vehicle trim part and / or the motor vehicle body part.

To An embodiment of the invention has the stiffening strut Furthermore, at least a first plastic molded part, wherein the first Plastic molded part designed to hold vehicle components is. This first plastic molded part is again preferably formed integrally with the stiffening strut itself and is also preferably exclusive from the plastic of the stiffening strut. The total weight of Stiffening strut is not through the first plastic molding changed significantly.

Under "Vehicle Component" is in the present case, any component of a motor vehicle, which is arranged loosely in the motor vehicle and which an attachment needed on a rigid motor vehicle component, so as to move the motor vehicle occurring impact noise or rattling noises to prevent, which therefore stir, that the loose vehicle component due to the movement of the motor vehicle and therefore resulting Shaking movements against other vehicle components thrown becomes. By the holder of the vehicle component by the first Plastic part will be a corresponding movement of the vehicle component considerably restricted or prevented. This becomes the necessity a separate complex attachment of brackets on motor vehicle trim parts and / or motor vehicle body parts significantly reduced or avoided. So instead of extra Plastic mounts to automotive trim parts and / or To arrange motor vehicle body parts, it is sufficient here these brackets in the form of the first plastic moldings together to provide 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 wheel drive in a simple manner, in particular when using the stiffening strut in a motor vehicle door. However, the first plastic molded part can also, for example, holding clips or snap hook elements for attaching soundproofing mats, recordings for engaging windshield washer nozzles, recordings of hinges and erection rods and their rest position clips.

To a further embodiment of the invention, the Stiffening strut at least a second plastic molded part, wherein the second plastic molded part for holding the stiffening strut even on a motor vehicle trim part and / or a vehicle body part is trained. In this case comes the second plastic molding unlike the first plastic molding not the function of Holder of a vehicle component, but the second plastic molded part is used for holding the stiffening strut to corresponding motor vehicle trim parts and / or Vehicle body parts themselves. Again, for example any types of fasteners for holding the stiffening strut insert find, such as locking means, or loops for Production of appropriate screw or rivet connections.

To a further embodiment of the invention, the Reinforcing strut at least one sensor means, wherein the sensor means is encapsulated by the plastic of the stiffening strut. For example it is the sensor means to a pressure sensor and / or a train sensor and / or a crash sensor and / or a sensor for Measurement of physical environmental conditions such as temperature or Ambient brightness.

The Implementation of appropriate sensor means in the stiffening strut itself has the advantage of being optimal at critical points the motor vehicle corresponding sensor information is detected can. For example, is the sensor means around a pressure sensor, so can occur locally in a simple manner be detected by voltage spikes in the stiffening strut, thus in cooperation with other sensors of the motor vehicle determine if there is only one for vehicle occupants insignificant external force on the stiffening strut present, or if there are any signs of a current taking place vehicle crash, due to which, for example to activate various safety systems of the motor vehicle, for. B. trigger airbags or tighten straps.

To a further embodiment of the invention form the Metal wire mesh and the plastic a penetration composite. In In other words, this is not just a massive example Steel rope before, which only on the rope surface is encased in plastic, but there is a network of metal wires before, this network is interspersed by the plastic. This However, does not exclude that the metal wires themselves consist of other thin Drahtfi lament which however, they are not interspersed with the plastic itself.

By the formation of a penetration composite becomes overall stability the stiffening strut further increased.

To a further embodiment of the invention, the Stiffening strut on a Vorschwachtungsstelle, wherein the preweakening point for a deformation the stiffening strut in a predetermined direction from a predetermined force is formed on the stiffening strut. This is for example then of relevant importance, if such a stiffening strut arranged as Fahrzeugquerquerversteifungselement in the motor vehicle is. In the case of a side impact can be controlled by the Deformation of the stiffening strut due to the preweakening point Side impact energy are reduced, but at the same time can be ensured that the deformation of the stiffening strut takes place in one direction away from the motor vehicle interior. This basic principle Can be applied to a variety of arrangements of stiffening struts in one Motor vehicle be extended. For example, it is also conceivable that a stiffening strut, which in a front hood of a motor vehicle is housed, a corresponding Vorschwachtungsstelle which ensures in a frontal crash of the motor vehicle, that a crease-shaped folding of the hood in controlled manner for energy reduction takes place.

To Another embodiment of the invention is the stiffening strut designed as an electrical conductor. In other words, that serves Stiffening strut for conducting the electrical current in the motor vehicle. For example, could a stiffening strut, which on Transmission tunnel of the motor vehicle is arranged to be used to a power supply of electrical components in the rear to realize electrical components in the front of the vehicle. A battery of the motor vehicle could be for this purpose be housed in the rear trunk, whereas the vehicle engine housed in the front area, where at by the stiffening strut at least partially the power supply from the battery to Motor is realized.

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. For example, it is in the Kraftfahrzeugverklei Form part to a front hood or a rear hood or a vehicle door or a roof component of a motor vehicle.

In In another aspect, the invention relates to a motor vehicle a stiffening strut, wherein the stiffening strut is preferably arranged as Fahrzeugquerversteifungselement in the motor vehicle is. In the prior art are corresponding vehicle transverse stiffeners mostly steel pipes with welded on further functional elements. Such Functional elements are end plates with holes and Bends, steel struts, also with bends and breakthroughs for connection to center consoles, pedal blocks, steering wheel holder and glove compartments and smaller items such as weld nuts. By now instead a stiffening strut is used, which has a metal wire mesh, which is encapsulated with a plastic is, can now with constant stability a considerable Guaranteed weight saving of the vehicle transverse reinforcement element become. In addition, as already described above, by the use of first plastic moldings which are integral formed with the stiffening strut, a substitute for the above-mentioned functional elements are provided.

When Another place to use a cross bracing strut, for example the tailgate of the motor vehicle conceivable. Especially here offers It is back to appropriate functional elements on the stiffening strut to arrange with, such. B. attachment points for rear window wiper or windscreen washers themselves.

It It should be noted that the stiffening struts an almost arbitrary can take geometric shape, which is suitable to meet the corresponding mechanical requirements. 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, wherein especially for all hollow sections in the context of a weight saving preferably only the profile casing a corresponding metal fabric and otherwise the cavity surrounded by the jacket filled with plastic.

So For example, it is possible by spiraling Winding a steel cord belt on an extruded plastic tube and then overmolding with plastic a very stable Pipe in Durchdringungsverbundbauweise produce its total weight considerably below that of a corresponding steel tube with similar ones mechanical properties lies. During the encapsulation process can, as in metal die casting, in the steel technology welded functional elements, as already mentioned above, be sharpened directly with. If the functional elements are lever or Striving to be able to turn here for reinforcement Steel cord belts are inserted.

in the The following are preferred embodiments of the invention 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.

in the Below are similar elements with the same Reference number marked.

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 were formed by 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 highest possible risk is Rigidity of the vehicle door 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.

task The strut is among other things, the side impact the resistance against the ingress of larger objects to increase in the interior. It should be a part of the impacting Energy can be absorbed by deformation and also great Parts of the energy are distributed to the door frame parts, which are usually executed reinforced. Such Struts can in the prior art as hollow profile tubes be executed, 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, like 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 of polypropylene with similar dimensions as the steel door strut from the prior art, 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 weighs only less than 200 g. So be corresponding stiffening struts according to the invention in a variety of automotive trim parts, such as automobile doors, Front or rear hoods, in the vehicle roof or other automotive components installed, can be a simple and inexpensive way significant overall weight reduction of the motor vehicle can be effected.

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 profile 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 somatic 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 is. Now, if the corresponding counter-piece receiving is formed so that only the taper of the H-shaped end piece is taken, then 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 In turn, reinforcing ribs are shown 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 in the present the case serves 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.

at Such a construction can besides weight reduction additional costs due to a high degree of integration in Limits are kept. This technique also allows for production pre-assembled modules, which are ready to be installed on the automotive belt could become.

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. Through another Processing to a rope and then to a fabric remains the tensile strength receive. The tensile strength can be in a tissue production independent by selecting the ropes for warp and weft vary from each other. Compared to the prior art is a such variation of tensile strength in solid sheets not the Case. The tensile strength in this case is approximate in all directions equal.

The Processing of thin steel wires to ropes and then to tissues allows a flexibility that depends is of the quality of steel wire, the rope construction and the mesh density. The flexibility of the fabric allows it, as already mentioned, the tissue without appropriate Preform in a plastic injection mold insert, wherein the closing force of the tool is sufficient to the tissue to press in a predetermined shape. The necessary rigidity is then by molding with a plastic generated.

It it should be noted, however, that for the production of the inventive Stiffening struts not only plastic injection molding techniques for Can use, but any kind of known manufacturing processes, by means of which a metal wire mesh of a plastic can be.

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 It should be noted that by the penetration of the plastic through the meshes of the fabric have a significantly higher bond strength as results in pure laminates.

The Functional elements such as ribs, screw-on domes, retaining clips and clips and spring arms, for example, directly be sprayed onto the stiffening strut. Also, the so produced Part in 2K technique with other elements of another plastic be supplemented. This can also be an extruded sealing lip 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 is a Metalldrahtgewe have, 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.

Also it is possible stiffening struts according to the invention together with laminar composite materials, consisting of a metal wire mesh and a molded plastic, to combine. Either two separately produced composite elements be joined together or both composite elements produced in a manufacturing process. These are in particular for the production of hollow profiles processes, such as "water" or "gas injection "available.

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 Plastics molding

504

first Plastics molding

506

first Plastics molding

508

first Plastics molding

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - US 6296301 B1 [0002]

Claims (15)

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. 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 ) at 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 any one of the preceding claims, 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 8, 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 13, 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 12 wherein the stiffening strut ( 100 ) is arranged as Fahrzeugquerversteifungselement in the motor vehicle.