WO2021156421A1

WO2021156421A1 - Vehicle accessory part, in particular in the form of a roof box, comprising a composite material, vehicle, and method

Info

Publication number: WO2021156421A1
Application number: PCT/EP2021/052773
Authority: WO
Inventors: Nils FREYBERG
Original assignee: Freyberg Nils
Priority date: 2020-02-07
Filing date: 2021-02-05
Publication date: 2021-08-12
Also published as: EP4100247A1; DE102020103189A1

Abstract

The invention relates to a vehicle accessory part (10) for a vehicle (1), having a first accessory body (20) that comprises a wall (21), by means of which a shape of the first accessory body (20) is at least partially defined, and a fastening interface (23) for fastening to the vehicle (1), wherein the wall (21) has a composite material (40) having at least a first wall material (41) and a second wall material (42). The invention further relates to a vehicle (1).

Description

Vehicle accessory part, in particular in the form of a roof box, with composite material, vehicle and method

Description

The invention relates to a vehicle accessory part, in particular in the form of a roof box, for a vehicle. The invention also relates to a vehicle and a method for producing a vehicle accessory part.

Composite materials that are used for lightweight construction in vehicles are known from the prior art. For example, it is known to use carbon parts to reduce the weight of vehicles. Such parts are particularly widespread in the motorsport sector. However, it is disadvantageous here that the environmental balance of such parts can be improved during production and / or during disposal. For example, certain production steps require special precautionary measures without any negative effects on the Health would be feared. Disposal can also be problematic because, for example, residues can remain during incineration and / or a strongly negative C02 balance can result.

It is an object of the present invention to at least partially remedy the above disadvantages known from the prior art. In particular, it is an object of the present invention to provide a more environmentally friendly vehicle accessory which is lightweight and is preferably adapted to a lifestyle of a user and / or to strength requirements for, in particular optional, use on a vehicle.

The above object is achieved by a vehicle accessory part with the features of claim 1, a vehicle with the features of claim 22 and a method with the features of claim 23. Further features and details of the invention emerge from the respective subclaims, the description and the Drawings. Features and details that are described in connection with the vehicle accessory according to the invention and / or the vehicle according to the invention naturally also apply in connection with the method according to the invention and in each case vice versa, so that with regard to the disclosure of the individual aspects of the invention, reference is always made to each other or can be.

According to a first aspect of the invention, a vehicle accessory part for a vehicle is provided. The vehicle accessory has a first accessory body. The first accessory body comprises a wall through which a shape of the first accessory body is formed at least in sections. Furthermore, the first accessory body comprises a fastening interface for fastening to the vehicle, the wall having a composite material with at least a first wall material and a second wall material, the first wall material comprising a matrix material for stiffening the wall, provided. It is also provided that the second wall material has natural fibers.

The vehicle accessory part can preferably be understood to mean a supplementary part for a supplementary function for the vehicle. For example, the vehicle accessory can be a roof rack, wheel rack or a roof box that can be optionally mounted on the vehicle. However, it is also conceivable that the Vehicle accessory is a retrofit part, for example in the form of a bonnet, a stain spoiler, an exterior mirror and / or a seat shell. The vehicle accessory part can thus be an outer part for the vehicle or an inner part for a vehicle interior of the vehicle. The vehicle accessory part can be designed, for example, as a single body or, in particular, as a cohesive combination of individual bodies of a functional unit. The vehicle accessory part can thus also be referred to as a vehicle accessory or a functional accessory unit. The vehicle is preferably a motor vehicle, in particular an electric vehicle. Preferably, the first accessory body forms a substantial part of the shape of the vehicle accessory.

In particular, the wall has a flat extension. The first accessory body can thus preferably be a thin-walled component. In this case, the first and / or second wall material has a flat extension, in particular at least in regions. Furthermore, the first and / or second wall material can in particular be oriented parallel or essentially parallel to an outer surface of the first accessory body. The first and second wall material preferably extend along the entire wall. The fact that the shape of the first accessory body is formed at least in sections by the wall can be understood to mean that the shape of the first accessory body is at least partially or completely defined and / or predetermined by the wall. For example, the wall can also be covered on an outside of the first accessory body.

The composite material can in particular be understood to mean a composite material, preferably a fiber composite material. The matrix material can be a solidified casting material or laminate, in particular in the form of a bio-based synthetic resin. The bio-based synthetic resin preferably has a carbon of which 50% or more, preferably 60% or more, particularly preferably 100%, is obtained from plants. This can have a positive effect on the C02 balance, especially in the case of thermal recycling. In particular, the matrix material can make the wall watertight and / or gas-tight, at least in some areas. A cohesion of the natural fibers of the second wall material can thus be achieved through the matrix material. In this case, the natural fibers are preferably embedded in the matrix material and / or positively and / or cohesively connected to the matrix material. In particular, the wall can have a thickness of less than or equal to 10 mm, preferably less than or equal to equal to 5 mm, particularly preferably between 0.05 mm and 1.6 mm or between 1 mm and 1.6 mm.

The second wall material preferably consists of the natural fibers. The natural fibers can include, for example, wood fibers, flax, hemp, jute, ramie, kenaf, sisal, henequen, bamboo, silk, cellulose, lignin and / or cotton. It is also conceivable that the natural fibers consist, for example, of wood fibers, flax, hemp, jute, ramie, kenaf, sisal, henequen, bamboo, silk, cellulose, lignin and / or cotton. In particular, the wall can at least partially or completely consist of the first and second wall material. It is conceivable that the second wall material is designed as a fiber fabric, in particular as a flax fiber fabric. The fiber fabric can be designed with a bidirectional fiber structure.

The fastening interface is preferably designed for reversible and / or manual fastening of the first accessory body to a vehicle part of the vehicle. For example, the fastening interface can be designed for screwing the first accessory body to the vehicle part. Furthermore, it is conceivable that the fastening interface has a latching means for latching the vehicle accessory part on the vehicle part. It is also conceivable that the fastening interface comprises a quick-release fastener with which the first accessory body can be secured to the vehicle part. In particular, the fastening interface can be arranged directly on the wall. As a result, the fastening interface can in particular be integrated into a functional unit of the accessory body. Thus, despite the composite material, it can be made possible for a user to independently attach the first accessory body to the vehicle part and also release it again. This enables the user to mount the vehicle accessory part as required, for example. The fastening interface can in particular be designed for form-fitting and / or force-fitting fastening of the first accessory body on the vehicle. In particular, the fastening interface can also be designed for mounting the vehicle accessory on the vehicle by a user. For this purpose, the fastening interface can be accessible, for example, by the user, in particular without dismantling and / or destroying the vehicle accessory part.

The use of natural fibers thus results in an improved environmental friendliness of the vehicle accessory. For example, the C02 balance be improved thereby. In addition, the natural fibers can also be produced in an environmentally friendly way if they are available as woven fabrics, for example. As a result, an energy requirement for the production of the second wall material can be reduced. At the same time, the strength of the vehicle accessory part in particular can be improved by the natural fibers, so that it can have strength properties that are comparable or improved to carbon parts, for example. At the same time, the natural fibers offer the advantage that they are lightweight and can therefore have a positive effect on the vehicle's energy consumption. In particular, the vehicle accessory part can thus be designed as a lightweight component.

Furthermore, it is conceivable in a vehicle accessory part according to the invention that the wall is designed to be closed, circumferential and / or trough-like. This enables a three-dimensional shape of the vehicle accessory part. In the case of a trough-like shape, a demolding direction can in particular advantageously be given if a three-dimensional body is to be formed. For example, the first accessory body can thus be designed as a half-shell through the wall. In particular, the wall can have a base area and a closed circumferential side surface around the base area. The side surface can form an obtuse angle with the base surface. This can improve the demolding in a cast production. The first accessory body is preferably a floor element of a roof box.

Furthermore, in a vehicle accessory part according to the invention, it can advantageously be provided that the second wall material is formed by a woven fabric or a fleece from the natural fibers, in particular with the second wall material being formed in multiple layers. The second wall material can be arranged in layers, preferably in two or three layers. The layers of the second wall material can extend parallel or essentially parallel to an outer surface of the wall. Furthermore, the second wall material can advantageously be designed as a mat and / or flexible. It is thus conceivable that the second wall material is already pre-assembled in order to be placed in a mold when the vehicle part is being molded, to which the matrix material is added. Furthermore, a woven fabric or a fleece enables the natural fibers of the second wall material to hold together internally, as a result of which the strength of the wall can be increased. Furthermore, in a vehicle accessory part according to the invention, it can advantageously be provided that the first wall material and / or a protective layer for the second wall material is at least partially transparent and / or that the wall forms an outside of the first accessory body. The protective layer can preferably cover the second wall material. Due to the transparent design of the first wall material, the natural fibers of the second wall material can form the appearance of the vehicle accessory part, in particular if the wall forms an outside of the first accessory body. As a result, a natural look for the vehicle accessory part can be achieved, which can advantageously fit into the user's attitude to life. In particular, the first accessory body can be unpainted. Alternatively, it is conceivable that the first accessory body, in particular with the protective layer, is painted in order to achieve any optics of the outside of the vehicle accessory part. For example, the protective layer can be a clear lacquer. If the wall forms the outside of the first accessory body, this has the further advantage that the wall can provide protection for components and / or objects located behind it against environmental conditions. Thus, the wall can in particular have a housing function. The composite material has the advantage that it can provide an advantageous tensile strength and an advantageous flexural strength due to the natural fibers. Furthermore, the matrix material can advantageously protect the natural fibers from external, mechanical and chemical influences. It is therefore not necessary, for example, to provide additional protection for the accessory body from ambient conditions.

It is also conceivable in a vehicle accessory part according to the invention that the composite material has a third wall material. The composite material can have a sandwich structure and the third wall material can be formed by an intermediate layer of the sandwich structure. Furthermore, it can be provided that the intermediate layer has a plastic, preferably a biodegradable plastic. In particular, the intermediate layer can comprise a foam material, preferably a PET foam material. The sandwich structure can improve the flexural rigidity of the wall while at the same time being low in weight. For example, the intermediate layer can have a layer thickness of up to 5 mm, preferably of up to 3 mm. It is also conceivable that the intermediate layer has a honeycomb structure. The honeycomb structure allows a high degree of flexibility of the third Wall material and / or the wall be made possible. Furthermore, intermediate areas between honeycombs of the honeycomb structure can be filled at least in sections or completely with the matrix material. For example, the intermediate areas can be soaked and / or penetrated with the matrix material during manufacture. By filling the intermediate areas, a high bond strength of the composite material can be achieved.

Furthermore, in a vehicle accessory part according to the invention, it can be provided that the sandwich structure has a first and a second layer, between which the intermediate layer is arranged, the first and / or the second layer having the second wall material, in particular the first and second layers being of the same type Have the fiber structure of the natural fibers. The first and second layers can in particular also be referred to as cover layers. If the first and second layers have the second wall material with natural fibers, the natural look can be made possible for an inside and an outside of the vehicle accessory part. The similar fiber structure of the first and second layers can be understood to mean that the first and second layers have the same fiber structure. For example, both layers can have a checkerboard-like or honeycomb-like fiber structure, the same fiber orientations and / or the same fiber thicknesses. As a result, strength and / or manufacturing properties that are symmetrical with respect to the intermediate layer can be achieved for the first and second layers. This has the advantage that a distortion of the two layers with respect to one another during the manufacture of the vehicle accessory part, i.e. in particular during the hardening of the matrix material, is avoided. The first and / or second layer preferably has a bidirectional fiber structure.

Additionally or alternatively, it can be provided in a vehicle accessory part according to the invention that the third wall material is formed by reinforcing strands that extend along the second wall material, in particular wherein the reinforcing strands extend at least in sections in a grid-like or strip-like manner over the wall and / or where the reinforcing strands are natural fibers or comprise a metal. The third wall material can in particular extend over the entire wall or a wall section of the wall that is to be reinforced in particular. In particular, the third wall material can run parallel or essentially parallel to an outer surface of the wall. Furthermore, the reinforcement strands can rest on the second wall material or at a distance from the second wall material be arranged and in particular embedded in the first wall material at least partially or completely. For example, the third wall material can be glued or sewn onto the second wall material. The reinforcing strands preferably comprise a yarn made from the natural fibers. The yarn can be formed from a coherent natural fiber or from several natural fibers. The natural fibers can be the same natural fibers that the second wall material has. It is also conceivable that the natural fibers of the second wall material differ from the natural fibers of the third wall material. It is also conceivable that the reinforcement strands are formed from a metal, in particular in the form of wires. For example, the reinforcement strands can comprise aluminum. It is conceivable that the reinforcement strands are designed as a stamped part. The tensile and / or flexural strength of the wall can be improved by the lattice-like or strip-like extension of the reinforcement strands. In particular, it is therefore not necessary for the natural fibers of the third wall material to extend over the entire surface of the wall. As a result of the concentrated reinforcement strands, the strength of the wall, in particular in the case of a grid-like or strip-like extension of the reinforcement strands, can nevertheless be improved over the entire wall. The third wall material can preferably be combined and connected to the first and / or second wall material in the manner of a mat. In particular, the wall can at least partially or completely consist of the first, second and third wall material. It is conceivable that polygonal, in particular square, meshes are formed by the reinforcement strands.

Furthermore, it is conceivable in a vehicle accessory part according to the invention that intermediate spaces are formed between the reinforcement strands of the third wall material, which spaces have decayed with the first wall material or which are at least partially free of the first wall material, preferably so that the reinforcement strands are at least partially on an inner side of the wall, in particular with respect to the first and second wall material protrude. The reinforcement strands can preferably protrude like ribs on an inner side of the wall. Thus, the wall can preferably have a smaller thickness in the interspaces than on the reinforcement strands. As a result, if the interspaces are at least partially free of the first wall material, a weight of the vehicle accessory part can be reduced, in particular with the strength properties of the first accessory body being essentially retained. The reinforcement strands are preferably on the Wall inside of the first accessory body. For example, the outside of the first accessory body can be made smooth and / or flat. As a result, it can be provided that the appearance of the vehicle accessory part is not negatively influenced by the spaces and / or the reinforcement strands when the

Reinforcing strands are arranged behind the first and / or second wall material viewed from the outside.

Furthermore, in a vehicle accessory part according to the invention, it can advantageously be provided that a wall inside of the wall is at least partially or completely covered with a cladding material, in particular where the

Cladding material is positively, non-positively and / or cohesively connected to the wall. The cladding material can for example comprise a plastic and / or a textile. In this way, for example, the interspaces and the reinforcing strands can be covered when the interspaces and the reinforcing strands are on the

Wall inside of the wall are. Furthermore, a further functional property can be provided by the cladding material on the inside of the wall. The cladding material can be, for example, a protective material for thermal insulation of the first accessory body on the inside of the wall. In this way, for example, the vehicle accessory can be used advantageously in an engine compartment. It is also conceivable that the cladding material is designed to accommodate loose objects. For example, the cladding material can be designed to be non-slip and / or define an interior space of a roof box. The cladding material can be glued to the wall, for example. This can result in an advantageous, non-destructive connection option with the composite material.

It is also conceivable in a vehicle accessory part according to the invention that a second accessory body can be fixed or fixed to the first accessory body, in particular wherein the second accessory body has an additional wall with the composite material. The second accessory body is preferably designed to be complementary to the first accessory body. The second accessory body can advantageously be a cover element of the roof box that corresponds to the base element. It can thus be provided that the second accessory body has a circumferential outer edge which can be coupled to a circumferential outer edge of the first accessory body. This allows, for example, a closable interior space between the first and second Accessory body can be formed. The additional wall is in particular a further wall. A shape of the second accessory body is preferably defined at least in sections by the additional wall. The additional wall can consist of the composite material. It is thus conceivable that the vehicle accessory part is designed with several individual bodies, wherein the advantages of the composite material described above can also be transferred to the second accessory body. In particular, the first and second accessory bodies are made of the same material. Furthermore, this can result in an overall visual appearance that emphasizes the environmentally conscious design of the vehicle accessory part. For example, it is conceivable that the additional wall forms an outside of the second accessory body, preferably if the first wall material of the additional wall is at least partially transparent.

Furthermore, with a vehicle accessory part according to the invention, it is conceivable that the wall forms an outer edge of the first accessory body and / or the additional wall forms an outer edge of the second accessory body, in particular the outer edge of the first and / or second accessory body being sealed, milled and / or covered is. The seal can, for example, comprise a sealing compound, in particular a hardened one. The subsequent treatment of the outer edge by milling or cladding can thus create a high-quality outer edge that improves the appearance of the wall. If the composite material is a brittle material, this can also reduce the risk of injury to a user. To cover the outer edge, it can be provided that a cap element, for example made of plastic or rubber, is provided to cover the outer edge of the first and / or second accessory body. In particular, the cap element can be pretensioned by the securing unit in that the securing unit biases the second accessory body against the first accessory body in the closed position.

In a vehicle accessory part according to the invention, it can preferably be provided that the fastening interface has a load-bearing element through which a fastening force can be introduced into the wall, in particular wherein the load-bearing element is cohesively connected to the wall and / or is at least partially integrated locally into the composite material. The load-bearing element can, for example, be a metal profile, in particular an aluminum profile. For example, the load-bearing element can be designed as a flat body, particularly preferably as a stamped part. As a result, the fastening force can advantageously be introduced into the wall. The load-bearing element can, for example, be glued to the wall. It is also conceivable that the load-bearing element is placed in the composite material during the manufacture of the first accessory body. In particular, the load-bearing element can thus be formed integrally with the wall. This can result in an advantageous power transmission, so that, particularly if the composite material is a brittle material, the fastening interface can withstand high loads during operation and / or during assembly. The fastening force can in particular be a force which acts on the fastening interface and / or the wall when the first accessory body is fastened to the vehicle and / or when the vehicle is in operation. In this way, a local, load-appropriate configuration can be made possible, which is advantageously brought into harmony with the composite material. Furthermore, a lightweight construction of the vehicle accessory part can be supported by a merely local requirement of the load-bearing element and / or by the use of aluminum profiles.

Furthermore, it can advantageously be provided in a vehicle accessory part according to the invention that a lockable securing unit is provided for securing the first and / or second accessory body, in particular with a coupling element for coupling the securing unit with the first and / or second accessory body in the wall and / or the additional wall is integrated and / or cohesively connected to the wall and / or the additional wall. The lockable security unit can in particular be arranged on the first and / or second accessory body. The lockable security unit can include a mechanical and / or electronic lock. The coupling element can be, for example, a threaded sleeve through which the securing unit is fastened or can be fastened to the wall or the additional wall. In particular, the coupling element can enable advantageous power transmission when the securing unit is loaded. For example, if the vehicle accessory is a roof box, unauthorized opening of the roof box can thereby be prevented. For example, if the vehicle accessory is a hood, it can also be lockable. The securing unit is preferably arranged on a patch side of the vehicle accessory part, so that the securing unit is arranged on the rear of the vehicle when the vehicle accessory part is mounted on the vehicle. Advantageously, the electronic Lock have a receiver unit for actuating the lock via a radio link.

Furthermore, in a vehicle accessory part according to the invention, it can advantageously be provided that the first and second accessory bodies are connected to one another by a hinge unit and / or that the second accessory body, in particular by the hinge unit, is in a closed position in which the second accessory body is on the first accessory body, in particular flush on the outside, rests, and can be brought into an open position in which the second accessory body is at least partially or completely lifted off from the first accessory body. In the open position, the second accessory body is preferably pivoted relative to the first accessory body, in particular about a hinge axis of the hinge unit. The joint unit can in particular comprise a hinge. A flush termination of the first and second accessory body can also prevent turbulent air flows from forming in the area between the first and second accessory body or in the area of the connection between the first and second accessory body. This can reduce wind noise when driving the vehicle. As an alternative to a connection of the first and second accessory bodies to one another through the joint unit, the first accessory body can be arranged in an articulated manner on the vehicle part through the joint unit. The wall of the first accessory body preferably has a first bevel and the additional wall of the second accessory body has a second bevel. The first and second bevels can be designed to be complementary to one another in order to enable the wall and the additional wall to be flush with one another. For example, the first and second bevels can interlock in the closed position. The first bevel of the wall can be designed sloping towards the inside of the wall and the second bevel of the additional wall towards the outside. For improved comfort, the joint unit can comprise one or more gas pressure dampers for damping an opening and / or closing movement of the second accessory body.

In the context of the invention, it can be provided that an, in particular U-shaped, positioning element for positioning the second accessory body relative to the first accessory body in the closed position is arranged on the wall. The positioning element can be arranged, preferably fastened, directly or indirectly on the wall. For example, the positioning element can be an insert. In particular, the positioning element for centering the second accessory body for first accessory body formed. The U-shaped design of the positioning element can, for example, advantageously enable lateral centering. Furthermore, the U-shape of the positioning element can be opened to a stain side of the vehicle accessory part. This enables flush positioning of outer edges and / or outer sides, in particular outer surfaces, of the first and second accessory body in the wind direction, as a result of which aerodynamic properties can be improved. The positioning element can preferably have the composite material or consist of the composite material. It is also conceivable that the positioning element comprises a metal, in particular aluminum. Furthermore, the positioning element can be firmly attached, in particular glued, to the inside of the wall of the first accessory body. Furthermore, it is conceivable that a further positioning element for the relative positioning of the second accessory body to the first accessory body in the closed position is arranged on the additional wall of the second accessory body, in particular at the rear.

In the case of a vehicle accessory part according to the invention, it can be provided that a sealing means is provided for sealing a gap between the first and second accessory body. In particular, the positioning element can have the sealing means. The sealing means can preferably be elastic and contribute to the positioning and / or centering of the second accessory body in relation to the first accessory body. For example, the sealant can comprise a rubber, a silicone and / or the like. In the closed position, the sealing means preferably rests against the second accessory body, in particular an inner wall side of the additional wall. The gap can be understood, for example, as a parting line. In this case, the gap can, for example, be able to be formed circumferentially or in sections circumferentially between the first and second accessory body in the closed position. By sealing the gap, wind resistance of the vehicle accessory part can be reduced. Furthermore, components or objects arranged behind the seal, for example objects in a roof box, can be protected from the effects of the weather. In the closed position, an in particular arched shoulder of the first accessory body can engage in an in particular arched recess of the second accessory body on the stain side. In this way, for example, when the securing unit is closed, an advantageous bias can be exerted on the positioning element of the first accessory body and / or the further positioning element of the second accessory body. Furthermore, it is conceivable that the wall and / or the additional wall has a sealing surface onto which the sealing means can be pressed in the closed position in order to seal the gap. For this purpose, the first and second accessory bodies can be pretensioned against one another in the closed position. For example, the sealing means can be compressed and / or elastically pretensioned in the closed position. The sealing surface can in particular be formed on an outer edge of the wall and / or the additional wall. The sealing surface can have the second wall material, a seal and / or a cladding. The sealing surface can therefore create a flat surface through which a reliable sealing effect can be made possible. In particular, the sealing surface can be oriented horizontally when the vehicle accessory part is used as intended and / or when the vehicle accessory part is installed. As a result, a weight of the second accessory body can support the preload.

It can also be provided in a vehicle accessory part according to the invention that the additional wall and / or the wall has an overlap area which at least partially covers the gap, in particular on the outside, preferably so that a head wind is at least partially prevented from penetrating the gap . The overlap area can in particular extend along the outside of the wall and / or the additional wall. The additional wall and / or the wall can have a trough in which the overlap area is arranged in the closed position. As a result, the gap can be at least partially protected from the head wind, so that local turbulence in the head wind at the gap is reduced or prevented. In this way, wind noise can be reduced and / or an energy-saving driving style can be improved.

Furthermore, in a vehicle accessory part according to the invention, it can advantageously be provided that the joint unit comprises a flexible gear, by means of which the second accessory body can be lifted completely or substantially completely from the first accessory body, in particular by a combined linear and pivoting movement. The combined linear and pivoting movement can be curved with a variable curvature. Furthermore, the combined linear and pivoting movement can have, for example, a linear movement component with which the second accessory body can be moved out of the closed position, and a pivoting component with which an angle of the second accessory body to the first accessory body can be changed. In this way, for example, the first lifting movement can be at least partially decoupled from a pivoting movement being. As a result, greater constructive freedom can be created, particularly in the area of a gap between the first and second accessory body. Furthermore, reliable opening with a large access area between the first and second accessory body can thereby be made possible. Furthermore, in the closed position, the joint unit can thereby be arranged completely in an interior space between the first and second accessory body. The Flebel gear preferably has several articulated axes. Furthermore, it can be provided that the Flebel gear is designed in such a way that the second accessory body can be lifted off the first accessory body in the direction of a front side of the first and second accessory body, so that a movement from the closed position into the open position takes place at least partially in the direction of a vehicle front when the Vehicle accessory is mounted on the vehicle.

The Flebel gear can advantageously comprise a four-point hinge. The four-point hinge can, preferably only, comprise four joints and / or, preferably only, four brackets. The ribs can have different lengths. The four-point hinge can produce advantageous kinematics in which the second accessory body can slide over the first accessory body when it is moved into the open and / or closed position. If the vehicle accessory is a roof box, this can make loading and unloading easier. At the same time, a high degree of rigidity of the vehicle accessory part can be made possible when the second accessory body is moved between the open position and the closed position. In addition, a required, in particular vertical, space of movement when moving the second accessory body between the open and the closed position can be reduced by the linear and pivoting movement achieved. The Flebel gear can be designed symmetrically with respect to the vehicle accessory, for example in that a four-point hinge is arranged on two opposite sides of the vehicle accessory.

In a vehicle accessory part according to the invention, it can be provided that the hinge unit is arranged on a front side of the first and second accessory body, so that the hinge unit is arranged on a vehicle front when the vehicle accessory part is mounted on the vehicle. The arrangement on the front side ensures that when the vehicle is traveling forwards, there is a wind load on the joint unit, so that the risk of the first and second accessory body being opened unintentionally is reduced or prevented. At the same time there can be easy accessibility to be made possible for an interior space if the vehicle accessory is a roof box or a front hood.

Furthermore, it is conceivable in a vehicle accessory part according to the invention that at least one hinge receptacle for fastening the hinge unit is arranged on the wall, which is connected to the wall in a materially bonded manner or is at least partially integrated locally into the composite material. Through the joint receptacle, a power line can be introduced into the wall during operation or during assembly, in particular if the composite material is a brittle material. The joint receptacle can, for example, comprise an aluminum profile and / or a threaded sleeve. For example, the joint receptacle can be glued onto the wall in order to enable an integral connection. Thus, a load-appropriate design can also be provided for the joint receptacle and a long service life of the vehicle accessory part can be made possible even with frequent opening and closing of the joint. The joint receptacle is preferably arranged on an inner side of the wall.

Furthermore, in a vehicle accessory part according to the invention, it can advantageously be provided that the load-bearing element, the coupling element and / or the joint mount has a mounting plate for connection to the wall, in particular the mounting plate having mounting openings which are at least partially filled with an adhesive and / or the matrix material . A fastening element, for example in the form of a threaded pin, can extend from the mounting plate. The mounting plate can enable the load-bearing element, the coupling element and / or the joint holder to be fastened over a large area. The adhesive can be used for material-locking fastening of the load-bearing element, the coupling element and / or the joint holder. The mounting openings can therefore improve the fastening of the load-bearing element, the coupling element and / or the joint mount to the wall. For example, the matrix material can extend into the mounting openings of the mounting plate when the mounting plate is integrated into the wall and / or the additional wall.

Furthermore, in a vehicle accessory part according to the invention, it can advantageously be provided that the wall has a curvature, with at least one insert element for forming a local mounting surface in the curvature and / or the Wall is integrated, in particular wherein the insert element is formed from a foam material. In particular, the curvature can be configured essentially over the entire surface of the first accessory body. The curvature can be interrupted by the mounting surface or by several mounting surfaces. In particular, the insert element can form a projection with the mounting surface. The local mounting surface can in particular be understood to mean a flat partial surface that extends on the outside or the inside of the wall and / or the additional wall. In particular, the outside and / or the inside of the wall can have the curvature. A local straightening can therefore take place through the mounting surface in order to enable a simplified mounting of additional components. For example, the mounting plate can be arranged flat on the mounting surface. It can thus be provided that the load-bearing element, the coupling element and / or the joint receptacle is fastened to the mounting surface. The foam material can be a rigid PET foam, for example. Furthermore, the foam material can be made impermeable to the matrix material. This can prevent the matrix material from penetrating into the insert element in liquid form during the manufacture of the vehicle accessory, whereby a lightweight construction of the vehicle accessory can be supported. It can advantageously be provided that the insert element is arranged between the first and second layers of the sandwich structure.

Furthermore, in a vehicle accessory part according to the invention, it can advantageously be provided that the first accessory body has at least one bicycle holder for fixing at least part of a bicycle to the first accessory body, in particular wherein the bicycle holder is cohesively connected to the wall or is at least partially integrated locally into the composite material. The bicycle holder can, for example, comprise a wheel holder for holding a front wheel and / or a frame holder for holding a bicycle frame. Furthermore, the bicycle holder can comprise embedding elements for softly embedding the bicycle. As a result, a bicycle can be attached to the vehicle accessory part in a simple manner and carried along with the vehicle. In particular, if the vehicle accessory is a roof box, a bicycle can thereby be gently transported within the roof box without parts of the bicycle being damaged. A higher vehicle speed can also be achieved and / or tolerated as a result. Furthermore, taking into account a sport that is close to nature, such as cycling, can support the environmentally conscious effect of the composite material. Furthermore, the second accessory body can at least have a bicycle holder for fixing a bicycle to the second accessory body, in particular wherein the bicycle holder is materially connected to the additional wall or is at least partially integrated locally into the composite material of the additional wall.

In the case of a vehicle accessory part according to the invention, it can preferably be provided that the vehicle accessory part is a roof box for mounting on a vehicle roof. The roof box can in particular comprise a receiving space for carrying objects. The roof box can in particular be mountable on the outside of the vehicle roof. In particular, the roof box can be mounted directly or indirectly on the vehicle roof. The roof box preferably has an aerodynamic shape which can reduce wind resistance when driving the vehicle. It is also conceivable that the roof box has at least one aerodynamic element, in particular in the form of a stain spoiler and / or a stain diffuser. The aerodynamic element is preferably integrated into the wall of the first accessory body or into the additional wall of the second accessory body. This can reduce wind resistance in order to reduce wind noise. Particularly in the case of sports excursions into nature, where roof boxes are often used, it is desirable to provide a natural design of components so that they can fit into the user's lifestyle. The composite material makes it possible to provide an environmentally conscious design of a roof box in lightweight construction. In particular, a vehicle accessory part according to the invention in the form of a roof box thus represents a further aspect of the invention.

According to a further aspect of the invention, a vehicle is provided. The vehicle has at least one vehicle accessory part according to the invention.

The vehicle can be a motor vehicle, in particular an electric vehicle. The vehicle accessory part is preferably detachably or non-detachably connected to a vehicle part of the vehicle.

According to a further aspect of the invention, a method for lowering a vehicle accessory part, in particular a vehicle accessory part according to the invention, is provided for a vehicle. The procedure consists of the following steps:

Providing a first and a second wall material for a wall of a first accessory body of the vehicle accessory part, wherein the first wall material a matrix material to stiffen the wall and the second wall material has natural fibers,

Positioning the second wall material in a tool element which at least in sections corresponds to a negative shape of the first accessory body,

Finishing the first accessory body comprising applying the first wall material to at least the second wall material in the tool element, curing the first wall material so that at least the first and second wall material form a composite material, and providing a fastening interface for fastening to the vehicle.

A method according to the invention thus brings the same advantages as have already been described in detail with reference to a vehicle accessory part according to the invention and / or a vehicle according to the invention. The method is particularly suitable for lowering a roof box.

Due to the negative shape of the tool element, the wall can define, at least in sections, a shape of the first accessory body when the first wall material has hardened. The tool element can comprise a casting mold, a molding tool, a die and / or the like. The first and second wall material can preferably be provided separately from one another. The first wall material can be present as a casting material in liquid form or as a laminate. The first wall material in the hardened state can serve to stiffen the wall. The second wall material can, for example, be provided in layers as a fabric. The tool element can preferably form a pressure chamber which is preferably delimited by an elastic membrane. A negative pressure or an overpressure can be generated in the pressure chamber. The application of the second wall material can include introducing the second wall material into the pressure chamber until the second wall material presses against the elastic membrane. Furthermore, it is conceivable that the application of the second wall material comprises lamination and / or pressing of the second wall material with the first and / or third wall material.

When the second wall material is positioned in the tool element, a load-bearing element for the fastening interface, a coupling element for a securing unit and / or a hinge receptacle for a Joint unit for connecting the first accessory body to a second accessory body in the tool element and / or on the second wall material are arranged in order to integrate the load-bearing element, the coupling element and / or the joint receptacle into the wall. For this purpose, the load-bearing element, the coupling element and / or the joint receptacle can be arranged before the hardening, preferably before the application of the first wall material. Additionally or alternatively, it is conceivable that a load-bearing element for the fastening interface, a coupling element for a securing unit and / or a joint receptacle for a joint unit is fastened to the wall, in particular materially, after curing.

Furthermore, before or after the positioning of the second wall material, a third wall material can be arranged in the tool element, to which the first wall material is at least partially applied when the first wall material is applied to the second wall material. For example, the third wall material can be connected to the second wall material, in particular by sewing or gluing, before the second and third wall material are positioned together in the tool element. In particular, the third wall material has natural fibers, which are preferably formed into reinforcing strands. For example, the elastic membrane can be positioned on the third wall material. Reinforcement strands of the third wall material can be pressed into the elastic membrane when the first wall material is introduced into the pressure chamber. As a result, spaces between the reinforcement strands remain free of the first and second wall material, which can result in a structured surface. A smooth and / or flat surface of the wall, in particular on a side of the wall opposite the third wall material, is preferably produced when the first wall material is heard.

Furthermore, it is conceivable that initially a first layer of the second wall material is positioned, onto which the third wall material and a further layer of the second wall material are applied in order to produce a sandwich structure. The third wall material can be applied as a foam material, preferably as a PET foam material. The first wall material can be applied to the second and third wall material in order to impregnate the two layers and the intermediate layer and to bond them in a materially bonded manner during curing. Further advantages, features and details of the invention emerge from the following description, in which exemplary embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description can each be essential to the invention individually or in any combination. They show schematically:

Figure 1 shows a vehicle according to the invention with one according to the invention

Vehicle accessory part in a first embodiment in the form of a roof box,

FIG. 2 shows a composite material of a wall of the vehicle accessory part in a cross-sectional view,

FIG. 3 shows a plan view of the composite material of the wall of the vehicle accessory part from the inside of the wall,

Figure 4 shows the vehicle accessory in the form of the roof box in a schematic

Exploded view,

Figures 5a + b detailed views of the wall of the vehicle accessory part,

FIG. 6 shows a possible configuration of a wall of the vehicle accessory part,

FIG. 7 a further possible configuration of the wall of the vehicle accessory part,

FIG. 8 shows a vehicle according to the invention with vehicle accessories according to the invention in further exemplary embodiments,

FIG. 9 shows a vehicle according to the invention with one according to the invention

Vehicle accessory part in a first embodiment in the form of a seat shell,

FIG. 10 shows a method according to the invention for lowering a vehicle accessory part in a schematic representation of method steps, FIG. 11 shows a vehicle according to the invention with one according to the invention

Vehicle accessory part in a further embodiment in the form of a roof box,

FIG. 12 shows a detailed view of an outer edge of a wall of a

Vehicle accessory part in a further embodiment,

FIG. 13 a joint unit with a Flebel gear,

FIG. 14 a part of a wall with an insert element in a sectional view,

FIG. 15 shows a sandwich structure of a wall in a cross section, and

FIG. 16 shows a sealing means for sealing a gap between a first and a second accessory body.

In the following description of some exemplary embodiments of the invention, identical reference symbols are used for the same technical features in different exemplary embodiments.

FIG. 1 shows a vehicle 1 according to the invention with a vehicle accessory 10 according to the invention in the form of a roof box 10.1. The vehicle accessory part 10 has a first and a second accessory body 20, 30, which are connected to one another via a hinge unit 26. In particular, the first accessory body 20 is a base element of the roof box 10.1 and the second accessory body 30 is a cover element of the roof box 10.1. The first accessory body 20 has at least one fastening interface 23 for fastening the vehicle accessory 10 to a vehicle part 2 in the form of a vehicle roof 2.1 of the vehicle 1. The first accessory body 20 can preferably have a plurality of fastening interfaces 23. In particular, the vehicle accessory part 10 can be reversibly fastened to the vehicle 1 by the fastening interface 23. The first and second accessory bodies 20, 30 are preferably connected to one another by the joint unit 26 in such a way that the second accessory body 30 can be adjusted from a closed position I to an open position II is. In the closed position I, the second accessory body 30 rests on the first accessory body 20. In the open position II, the second accessory body 30 is lifted from the first accessory body 20. For this purpose, the joint unit 26 preferably has a lever mechanism 26. 2 which is fastened on an inner side 29 of the first accessory body 20. With the lever mechanism 26.2, a combined linear and pivoting movement can be executed by the second accessory body 30 when the second accessory body 30 is transferred from the closed position I to the open position II. This allows access to an interior space of the roof box 10.1. The lever mechanism 26.2 preferably has a four-point hinge, as shown in FIG. This enables advantageous kinematics for the combined linear and pivoting movement.

The first accessory body 20 has a wall 21 with a flat extension which at least partially defines a shape of the first accessory body 20. In particular, the first accessory body 20 is thus a thin-walled body. The wall 21 also comprises a composite material 40, which is shown in sections in FIGS. The composite material 40 has at least a first and a second wall material 41, 42. The first wall material 41 comprises a matrix material for stiffening the wall 21 and the second wall material 42 comprises natural fibers. The second wall material 42 can thereby improve tensile, compressive, tear and / or flexural strength of the wall 21. At the same time, the natural fibers represent, in particular, a biodegradable component with a low weight. For example, the natural fibers of the second wall material 42 can be in the form of a woven fabric. Furthermore, the second wall material 42 can have a multilayer design. In this case, two layers of the second wall material 42 can preferably be arranged next to one another, in particular directly. The matrix material of the first wall material 41 can comprise, for example, a solidified casting material or a laminate. The second wall material 42, in particular the fabric of the second wall material 42, can be impregnated with the first wall material 41 and / or penetrated by the first wall material 41. This results in an advantageous bond of the composite material 40. Furthermore, the composite material 40 comprises a third wall material 43 reinforcing strands 44, which preferably also have natural fibers. For example, the reinforcing strands 44, in particular in the form of a yarn, can be formed from the natural fibers of the third wall material 43. However, it is also conceivable that the Reinforcing strands 44 comprise a metal, for example an aluminum, preferably in the form of wires. As a result, the wall 21 can be reinforced without covering the wall 21 over a complete area with the third wall material 43. The reinforcement strands 44 advantageously extend over the wall 21 in a grid-like manner. In this case, spaces 45 are formed between the reinforcement strands 44, which are preferably at least partially free of the first wall material 41. As a result, weight can be saved through the spaces 45 and an improvement in the strength properties of the wall 21 can nevertheless be achieved through the reinforcement strands 44. Alternatively, it is conceivable that the interspaces 45 with the first wall material 41 have lapsed if, for example, an even higher component stiffness is to be achieved. The reinforcement strands 44 preferably protrude at least partially from the first and second wall material 41, 42 on an inner wall side 27 of the wall 21. In particular, a wall outer side 28 of the wall 21 forms an outer side 22 of the first accessory body 20. Preferably, the wall 21 on the wall outer side 28 is designed to be flat and / or smooth. As a result, the appearance of the vehicle accessory part 10 can be attractive and at the same time the weight advantage of the spaces 45 can be maintained in a simple manner.

In addition or as an alternative, it can furthermore be provided that the reinforcement strands 44 are arranged in the form of strips. The reinforcement strands 44 can run parallel or essentially parallel to one another. As a result, the spaces 45 can run horizontally or vertically in the wall 21 in order, for example, to enable improved strength properties in a specific direction.

Figure 4 shows the vehicle accessory part 10 in the form of the roof box 10.1 also in a schematic exploded view. The wall 21 of the first accessory body 20 is designed like a trough with a closed circumferential outer edge 20.1. The outer edge 20.1 is preferably sealed, milled or covered. As a result, the wall 21 can form the outer edge 20.1 and the composite material 40 can extend in particular to the outer edge 20.1. The second accessory body 30 also has an additional wall 31, which also includes the composite material 40 and / or is formed at least in sections from the composite material 40. The first and second accessory bodies 20, 30 can be secured to one another in the closed position I by a securing unit 25. The securing unit 25 is preferably arranged on a stain side 13 of the vehicle accessory part 10, so that the securing unit 25 is located on the Vehicle 1 is oriented to a vehicle rear 1.2. In particular, the securing unit 25 can prevent the second accessory body 30 from being transferred into the open position II. This can prevent unauthorized access to the interior of the roof box 10.1. Furthermore, the inner side 27 of the wall 21 of the first accessory body 20 is preferably covered with a cladding material 11, so that the cladding material 11 forms an inner side 29 of the first accessory body 20. In this way, for example, the spaces 45 can be optically hidden and / or an arrangement of objects in the roof box 10.1 can be simplified. Furthermore, it is conceivable that the additional wall 31 is also clad on the interior side.

The first accessory body 20 also has a joint receptacle 26.1 for receiving and fastening the joint unit 26, a coupling element 25.1 for coupling the securing unit 25 to the wall 21 of the first accessory body 20 and at least one load-bearing element 23.1 of the fastening interface 23 for introducing a fastening force into the wall 21. The joint receptacle 26.1, the coupling element 25.1 and / or the load-bearing element 23.1 are preferably materially connected to the wall 21, for example by gluing, or are each integrated locally in the composite material 40 of the wall 21. For example, an aluminum profile for the joint receptacle 26.1, the coupling element 25.1 and / or the load-bearing element 23.1 can be arranged on the second and / or third wall material 42, 43 when the wall 21 is lowered and then combined with the first wall material 41 to form the joint receptacle 26.1 to integrate the coupling element 25.1 and / or the load-bearing element 23.1 into the wall 21. Thus, an additional material, such as a metal, for the joint receptacle 26.1, the coupling element 25.1 and / or the load-bearing element 23.1 can be designed in accordance with the load and, at the same time, the need for the additional material can be kept low. It is conceivable that the second accessory body 30 also has a joint receptacle 26.1, a coupling element 25.1 and / or a load-bearing element 23.1. The joint receptacle 26.1, the coupling element 25.1 and / or the load-bearing element 23.1 of the second accessory body 30 can be integrated into the composite material 40 of the additional wall 31 or can be materially connected to the additional wall. The joint receptacle 26.1 is preferably arranged at least on the inner side 27 of the wall 21 and / or on an inner side 37 of the additional wall 31. In addition, a bicycle holder 60 for fixing a bicycle holder can, in particular on the inner wall side 27 of the wall 21 and / or the inner wall side 37 of the additional wall 31 Bicycle can be arranged on the first and / or second accessory body 20, 30. As a result, the bicycle can be safely transported in the interior of the roof box 10.1. It is conceivable that the joint receptacle 26.1, the coupling element 25.1 and / or the load receiving element 23.1 has a mounting plate 47 for connection to the wall 21, as shown in FIG. 13 for the joint receptacle 26.1. The mounting plate 47 preferably has mounting openings 47.1 which are at least partially filled with an adhesive and / or the matrix material.

Furthermore, the first and second accessory bodies 20, 30 are designed to be complementary to one another, so that the interior space between the first and second accessory bodies 20, 30 is closed in the closed position I. Thus, the first and second accessory bodies 20, 30 in particular form a housing of the roof box 10.1. The outer edge 20.1 and / or the wall outer side 27 of the wall 21 of the first accessory body 20 and an outer edge 30.1 and / or an outer wall 38 of the additional wall 31 of the second accessory body 30 are preferably designed such that the first and second accessory bodies 20, 30 are in the closed position I on the outside 22 are flush with one another. For this purpose, a positioning element 50, in particular a U-shaped, for centering the second accessory body 30 relative to the first accessory body 20 is preferably arranged on the inner side 27 of the wall 21. For this purpose, FIG. 5b shows the first accessory body 20 and the second accessory body 30 in the locking position I in a schematic partial cross-section. In this case, a gap 52 in the form of a parting line is formed between the first and second accessory bodies 20, 30, which gap is sealed by a sealing means 51 of the positioning element 50. The sealing means 51 also contributes to the centering of the first and second accessory bodies 20, 30. The positioning element 50 can be inclined towards the inside 29 of the first accessory body 20, in particular at an angle of approximately 65 °, in order to facilitate the centering process when transferring the second accessory body 30 from the open position II to the closed position I. A U-shape of the positioning element 50 is preferably open to the rear side 13 of the vehicle accessory part 10. As shown in FIG. 5a in a partial side view of the rear side 13, the second accessory body 30 can have a further positioning element 50 in the opening area of the U-shape, so that the interior of the roof box 10.1 is completely or substantially completely sealed in the closed position I. In this case, in the locking position I on the rear side 13, an in particular arched shoulder 21.4 of the first accessory body 20 can engage in an in particular arched recess 31.2 of the second accessory body 30. As a result, for example, when closing the securing unit 25, an advantageous Preload can be exerted on the positioning element 50 and / or the further positioning element 50.

Furthermore, at least one aerodynamic element 32, for example in the form of a rear spoiler or a rear diffuser, is arranged on the second accessory body 30. The aerodynamic element 32 can be part of the additional wall 31. Additionally or alternatively, it can be provided that the first accessory body 20 has an aerodynamic element 32, in particular as part of the wall 21. Furthermore, the roof box 10.1 can be designed like drops at least on the front side 12. As a result, the aerodynamic properties of the roof box 10.1 can be improved.

The composite material 40 can advantageously extend over the entire wall 21 of the first accessory body 21, as shown schematically in FIG. However, it is also conceivable that the composite material 40 extends only over a first wall section 21.2, as shown in FIG. In this case, further wall sections 21.3 can be provided which have a different material, e.g. aluminum.

FIGS. 8 and 9 show further exemplary embodiments of a vehicle accessory 10 according to the invention. According to FIG. The fastening interface 23 enables simple retrofitting or simple replacement of existing parts. It is also conceivable that the vehicle accessory part 10 is designed as a seat shell, as shown in FIG. A first accessory body 20 can be provided, by means of which a seat surface is formed. Furthermore, a second accessory body 30 can be provided, by means of which a backrest is formed. The first and second accessory bodies 20, 30 can be pivotably articulated to one another by a hinge unit 26. The first accessory body 20 has a, in particular closed or open, wall 21 and the second accessory body 30 has an, in particular closed or open, additional wall 31 be made possible. As a result, the seat shell can have a low weight and at the same time offer high strength. FIG. 10 also shows a method 100 for producing a vehicle accessory part 10 for a vehicle 1. In this case, the method 100 is suitable for producing the vehicle accessory part 10 according to the first exemplary embodiment. The method 100 comprises providing 101 a first and a second wall material 42 for a wall 21 of a first accessory body 20 of the vehicle accessory part 10. The first wall material 41 has a matrix material for stiffening the wall 21. The second wall material 42 has natural fibers. The method 100 further includes positioning 102 the second wall material 42 in a tool element which at least in sections corresponds to a negative shape of the first accessory body 20. Furthermore, as part of method 100, finishing 103 of first accessory body 20 takes place. During finishing 103, first wall material 41 is applied 103.1 to at least second wall material 42 in the tool element. The first wall material 41 is then hardened 103.2, so that the first and second wall material 41, 42 form a composite material 40. In addition, the finishing 103 includes providing 103.3 a fastening interface 23 for fastening to the vehicle 1. The fastening interface 23 can be provided 103.3, for example, before or after the hardening 103.2 of the first wall material 41.

FIG. 11 shows a vehicle 1 according to the invention with a vehicle accessory part 10 according to the invention in the form of a roof box 10.1 in a further exemplary embodiment. The roof box 10.1 is designed essentially in accordance with the first exemplary embodiment. A joint unit 26 is, however, arranged directly on a front side 12 of the vehicle accessory part 10 and thus in particular on a vehicle front 1.1 of the vehicle 1. As a result, even at high speeds of the vehicle 1, it can be ensured that the roof box 10.1 does not open unintentionally due to wind pressure while the vehicle 1 is traveling forwards.

As shown in Figure 12 in a schematic partial cross-section, according to a further embodiment of a vehicle accessory 10 according to the invention it can be provided that the wall 21 of the first accessory body 20 has a first bevel 21.1 and the additional wall 31 of the second accessory body 30 has a second bevel 31.1, the first and second bevels 21.1, 31.1 interlock in the closed position I. In particular, the first bevel 21.1 of the wall 21 is towards the inside of the wall 27 and the second bevel 31.1 of the additional wall 31 is towards the outside 22 sloping. As a result, a flush finish of the first and second accessory bodies 20, 30 can be achieved.

FIG. 14 shows a further partial cross section of a possible configuration of a wall 21 of a vehicle accessory part 10 according to the invention. The wall 21 has a curvature in which an insert element 46 is integrated. As a result, despite the curvature, a local mounting surface 46.1 is created, which at the same time enables the vehicle accessory part 10 to be manufactured in a simple manner.

FIG. 15 shows a sandwich structure 70 of a composite material 40 of a vehicle accessory part 10 according to the invention. The vehicle accessory part 10 can be, for example, a vehicle accessory part 10 according to one of the exemplary embodiments described above. The sandwich structure 70 has a first and a second layer 71, 73, between which an intermediate layer 72 is arranged. The first and second layers 71, 73 have a second wall material 42 with natural fibers. Advantageously, the first and second layers 71, 73 and the intermediate layer 72 can be connected by lamination. In particular, the first and second layers 71, 73 have a fiber structure of the same type as the natural fibers, as a result of which distortion during lamination can be avoided. The first and second layers 71, 73 are advantageously impregnated and / or penetrated by a first wall material 41 in the form of a matrix material of the composite material 40. The intermediate layer 72 forms a third wall material 43. The intermediate layer 72 or the third wall material 43 comprises a foam material, for example with a honeycomb structure. The intermediate layer 72 can also be at least partially impregnated and / or penetrated with the first wall material 41. One or more insert elements 46 can be locally integrated into the sandwich structure 70, as shown in FIG. Furthermore, it can advantageously be provided that a transparent protective layer 74, for example in the form of a lacquer, is applied to the first and / or second layer 71, 73. As a result, the composite material 40 can be protected from environmental influences.

FIG. 16 shows a section of a vehicle accessory part 10 according to the invention in the form of a roof box in a further exemplary embodiment. The vehicle accessory part 10 has a first and a second accessory body 20, 30, the second accessory body 30 being adjustable from a closed position I into an open position II. In the closed position I, the second accessory body 30 lies on the first accessory body 20 on. A sealing means 51 for sealing a gap 52 between the first and second accessory bodies 20, 30 is arranged on the second accessory body 30. A wall 21 of the first accessory body 20 comprises a sealing surface 53, onto which the sealing means 51 is pressed in the closed position I in order to seal the gap 52. For example, a securing unit 25 for securing the first and second accessory body 20, 30 via the first and second accessory body 20, 30 can exert a preload on the sealing means 51. An additional wall 31 of the second accessory body 30 further comprises an overlap area 54 which engages in a depression 55 of the wall 21 and thereby covers the gap 52 on an outer side 22 at least in some areas. In particular, the wall 21 and the additional wall 31 can be arranged flush in the closed position I in the region of the gap 52, that is to say in particular form a surface that is as flat as possible. As a result, a head wind is at least partially prevented from penetrating the gap 52, as a result of which air turbulence during travel is prevented or reduced.

The above explanation of the embodiments describes the present invention exclusively in the context of examples. Of course, individual features of the embodiments can be freely combined with one another, provided that they are technically sensible, without departing from the scope of the present invention.

References

1 vehicle

1.1 Front of the vehicle

1.2 Rear of the vehicle

2 vehicle part

2.1 Vehicle roof

10 vehicle accessory

10.1 Roof box

11 cladding material

12 front

13 stain side

20 first accessory body

20.1 outer edge

21 wall

21.1 first slope

21.2 first wall section

21.3 further wall section

22 outside of 20

23 Mounting interface

23.1 Load suspension element

25 Fuse Unit

25.1 coupling element

26 joint unit

26.1 Joint mount

26.2 Flebel gear

27 Inside wall of 21

28 outside wall of 21

29 inside of 20

30 second accessory body 30.1 outer edge

31 additional wall

31.1 second slope

32 aerodynamic element

37 Inside wall of 31

38 Outside wall of 31

40 composite material

41 first wall material

42 second wall material

43 third wall material

44 reinforcement strands

45 space

46 insert element

46.1 mounting surface

47 mounting plate

47.1 Assembly opening

50 positioning element

51 sealant

52 gap

53 sealing surface

54 Overlap area

55 hollow

60 bike racks

70 sandwich structure

71 first layer

72 intermediate layer

73 second layer

74 protective layer

I lock position

II open position

Claims

Patent claims

1. Vehicle accessory part (10) for a vehicle (1), comprising a first accessory body (20) with a wall (21) through which a shape of the first accessory body (20) is formed at least in sections, and a fastening interface (23) for fastening on the vehicle (1), the wall (21) having a composite material (40) with at least a first wall material (41) and a second wall material (42), the first wall material (41) being a matrix material for stiffening the wall (21) comprises, characterized in that the second wall material (42) comprises natural fibers.

2. Vehicle accessory part (10) according to claim 1, characterized in that the second wall material (42) is formed by a fabric made from the natural fibers, in particular wherein the second wall material (42) is multilayered.

3. Vehicle accessory part (10) according to one of claims 1 or 2, characterized in that the first wall material (41) and / or a protective layer (74) for the second wall material (42) is at least partially transparent and / or that the wall ( 21) forms an outside (22) of the first accessory body (20).

4. Vehicle accessory part (10) according to one of the preceding claims, characterized in that the composite material (40) has a third wall material (43), wherein the composite material (40) has a sandwich structure (70) and the third wall material (43) by a Intermediate layer (72) of the sandwich structure (70) is formed and / or wherein the third wall material (43) is formed by reinforcing strands (44) which extend along the second wall material (42).

5. Vehicle accessory part (10) according to one of the preceding claims, characterized in that that the sandwich structure (70) has a first and a second layer (71, 73), between which the intermediate layer (72) is arranged, the first and / or the second layer (71, 73) having the second wall material (42) , in particular wherein the first and second layers (71, 73) have a fiber structure similar to that of natural fibers.

6. Vehicle accessory part (10) according to one of the preceding claims, characterized in that the reinforcing strands (44) extend at least in sections in a grid-like or strip-like manner over the wall (21) and / or wherein the reinforcing strands (44) comprise natural fibers or a metal.

7. Vehicle accessory part (10) according to one of the preceding claims, characterized in that a wall inside (27) of the wall (21) is at least partially covered with a cladding material (28), in particular wherein the cladding material (11) shape, force and / or is firmly connected to the wall (21).

8. Vehicle accessory part (10) according to one of the preceding claims, characterized in that a second accessory body (30) can be fixed or fixed to the first accessory body (20), in particular wherein the second accessory body (30) has an additional wall (31) with the composite material (40).

9. Vehicle accessory part (10) according to one of the preceding claims, characterized in that through the wall (21) an outer edge (20.1) of the first accessory body (20) and / or through the additional wall (31) an outer edge (30.1) of the second accessory body (31) is formed, the outer edge (20.1, 30.1) of the first and / or second accessory body (20, 30) being sealed, milled and / or covered.

10. Vehicle accessory part (10) according to one of the preceding claims, characterized in that the fastening interface (23) has a load-bearing element (23.1) through which a fastening force can be introduced into the wall (21), in particular wherein the load-bearing element (23.1) is materially connected to the wall (21) and / or is at least partially locally integrated into the composite material (40).

11. Vehicle accessory (10) according to one of the preceding claims, characterized in that a lockable fuse unit (25) for securing the first and / or second accessory body (20, 30) is provided, in particular wherein a coupling element (25.1) for coupling the fuse unit (25) integrated with the first and / or second accessory body (20, 30) in the wall (21) and / or the additional wall (31) and / or integrally connected to the wall (21) and / or the additional wall (31) is.

12. Vehicle accessory part (10) according to one of the preceding claims, characterized in that the first and second accessory body (20, 30) are connected to one another by a hinge unit (26) and / or that the second accessory body (30) is in a closed position (I ), in which the second accessory body (30) rests on the first accessory body (20), in particular flush with the outside (22), and in an open position (II) in which the second accessory body (30) is separated from the first accessory body ( 20) is lifted off at least in some areas, can be brought.

13. Vehicle accessory part (10) according to one of the preceding claims, characterized in that on the wall (21) an, in particular U-shaped, positioning element (50) for the relative positioning of the second accessory body (30) to the first accessory body (20) in the Closure position (I) is arranged.

14. Vehicle accessory part (10) according to one of the preceding claims, characterized in that a sealing means (51) for sealing a gap (52) between the first and second accessory body (20, 30) is provided, in particular wherein the wall (21) and / or the additional wall (31) has a sealing surface (53) onto which the sealing means (51) can be pressed in the closed position (I) to seal the gap (52).

15. Vehicle accessory part (10) according to one of the preceding claims, characterized in that the additional wall (31) and / or the wall (21) has an overlap region (54) which defines the gap (52), in particular on the outside (22) , at least partially covered, so that a head wind is at least partially prevented from penetrating the gap (52).

16. Vehicle accessory part (10) according to one of the preceding claims, characterized in that the joint unit (26) comprises a Flebel gear (26.2), through which the second accessory body (30) from the first accessory body (20), in particular by a combined linear and Pivoting movement, can be lifted completely, preferably wherein the Flebel gear (26.2) comprises a four-point hinge.

17. The vehicle accessory part (10) according to any one of the preceding claims, characterized in that at least one hinge receptacle (26.1) for fastening the hinge unit (26) is arranged on the wall (21), which is or at least integrally connected to the wall (21) is partially integrated locally into the composite material (40).

18. Vehicle accessory part (10) according to one of the preceding claims, characterized in that the load-bearing element (23.1), the coupling element (25.1) and / or the joint receptacle (26.1) has a mounting plate (47) for connection to the wall (21), in particular wherein the mounting plate (47) has mounting openings (47.1) which are at least partially filled with an adhesive and / or the matrix material.

19. Vehicle accessory part (10) according to one of the preceding claims, characterized in that the wall (21) has a curvature, at least one insert element (46) being integrated into the curvature to form a local mounting surface (46.1), in particular wherein the insert element (46) is formed from a foam material.

20. Vehicle accessory part according to one of the preceding claims, characterized in that the first accessory body (20) has at least one bicycle holder (60) for fixing at least part of a bicycle on the first accessory body (20), in particular wherein the bicycle holder (60) cohesively with the Wall (21) is connected or at least partially locally integrated into the composite material (40).

21. Vehicle accessory (10) according to one of the preceding claims, characterized in that the vehicle accessory (10) is a roof box (10.1) for mounting on a vehicle roof (2.1).

22. Vehicle (1) having at least one vehicle accessory part (10) according to one of the preceding claims.

23. A method (100) for positioning a vehicle accessory part (10), in particular according to one of claims 1 to 21, for a vehicle (1), comprising the following steps:

Providing (101) a first and a second wall material (42) for a wall (21) of a first accessory body (20) of the vehicle accessory part (10), the first wall material (41) being a matrix material for stiffening the wall (21) and the second Wall material (42) comprises natural fibers, positioning (102) the second wall material (42) in a tool element which at least in sections corresponds to a negative shape of the first accessory body (20),

- Finishing (103) the first accessory body (20) comprising applying (103.1) the first wall material (41) to at least the second wall material (42) in the tool element, curing (103.2) the first wall material (41) so that at least the first and second wall material (41, 42) form a composite material (40), and provision (103.3) of a fastening interface (23) for fastening to the vehicle (1).