Decorative part for interior trim and use of a decorative part as well as motor vehicle

Abstract

Decorative part (10) for an interior trim of a motor vehicle, with a carrier part (12) comprising natural fibers for attachment in the motor vehicle, a core part (18) having cavities for supporting forces and a cover part (14) having natural fibers attached to the carrier part (12) to form a decorative surface (15), wherein the core part (18) is arranged between the support part (12) and the cover part (14) and the support part (12) and / or the cover part (14) define a first channel opening and the support part (12) and / or the cover part (14) define a second channel opening that communicates with the first channel opening via the core part (18), characterized by the fact that the cover part (14) is coated with a lacquer on the decorative surface (15) for protection and / or to form the visible decorative surface (15) and the support part (12) and the cover part (14) are connected to each other via two separate connecting strips (16) extending from the first channel opening to the second channel opening, with the core part (18) being arranged between the connecting strips (16).

Description

[0001] The invention relates to a decorative part for an interior trim and to a use of such a decorative part with the aid of which an interior of a motor vehicle can be trimmed, as well as to such a motor vehicle.

[0002] From DE 102 55 039 A1 a decorative part for an interior lining of a motor vehicle is known, in which a cavity-forming core layer is connected to a lower natural fibre / thermoplastic composite material and an upper natural fibre / thermoplastic composite material is connected to the opposite side of the core layer.

[0003] From WO 2008 / 061807 A1, an air-conditioned seat cover is known in which a base body having channels is provided between layers comprising natural fibers, wherein the channels end at the back of the upper breathable layer and release air-conditioned air through this breathable layer.

[0004] From the generic DE 101 61 745 A1, a composite component for a vehicle roof of a motor vehicle is known, in which a foam layer is provided between an outer skin of the motor vehicle and an air-permeable interior lining layer, in which ventilation channels can be incorporated. The outer skin can have reinforcement layers comprising natural fibers on the underside facing the foam layer.

[0005] There is a constant need to improve the functionality of cost-effective decorative parts of a motor vehicle's interior trim.

[0006] The object of the invention is to show measures that enable a cost-effective decorative part with a high level of functionality.

[0007] The object is achieved according to the invention by a decorative part having the features of claim 1, a motor vehicle having the features of claim 8 and a use having the features of claim 9. Preferred embodiments of the invention are specified in the subclaims and the following description, which can each represent an aspect of the invention individually or in combination.

[0008] According to the invention, a decorative part for an interior trim of a motor vehicle is provided, comprising a carrier part comprising natural fibers for fastening in the motor vehicle, a core part comprising cavities for supporting forces, and a cover part comprising natural fibers fastened to the carrier part for forming a decorative surface, wherein the core part is arranged between the carrier part and the cover part, and the carrier part and / or the cover part define a first channel opening, and the carrier part and / or the cover part define a second channel opening communicating with the first channel opening via the core part, wherein the cover part is coated with a lacquer on the decorative surface for protection and / or for forming the visible decorative surface, wherein the carrier part and the cover part are connected to one another via two separate connecting strips extending from the first channel opening to the second channel opening,wherein the core part is arranged between the connecting strips.,

[0009] The natural fibers in the carrier part and the cover part can enable high strength with a low weight. The core part can prevent the cover part from being pushed into the, for example, tubular cavity defined between the carrier part and the cover part. The core part can in particular fill at least a large part of the cavity and preferably rest against the carrier part and the cover part. As a result, suddenly occurring impact forces can be supported by the core part and distributed over a larger area, thus preventing damage, particularly to the cover part. For this purpose, the core part can be sandwiched between the carrier part and the cover part.In this case, the carrier part can in particular be designed as a substantially flat plate against which the cover part with a substantially U-shaped cross-section can rest in order to delimit the cavity provided for the core part. However, complete coverage of the cavity is not intended. Instead, the carrier part and / or the cover part can delimit the first channel opening and the second channel opening, via which a fluid, in particular air, can communicate with the cavity. At the same time, the cavities of the core part can be shaped such that the first channel opening can communicate with the second channel opening. This makes it possible for the decorative part not only to shape the visual appearance of the interior trim of a motor vehicle but also to conduct a fluid from one location to another.This utilizes the knowledge that the cavities of the core part can form a connecting channel through a suitable design. This allows the core part not only to form a sufficient number of supporting struts in a lightweight construction with low weight, but can also utilize the cavities provided between the struts to conduct a fluid, allowing the decorative part to fulfill an additional function by conducting a fluid. Due to the channel openings communicating with each other via the cavities of the core part, the decorative part can also assume the function of a fluid conduit, thus enabling a cost-effective decorative part with high functionality.

[0010] The natural fibers of the carrier part and / or the cover part can be embedded in a matrix made of a plastic and / or a resin. Furthermore, the carrier part and / or the cover part can comprise plastic fibers. Suitable materials for the natural fibers and suitable materials for the plastic are specified in DE 10 2011 056 933 A1, the contents of which are hereby incorporated by reference as part of the invention. In particular, the cover part is optionally connected directly to the carrier part via a connecting means, thus avoiding an indirect connection via the core part. The stability of the decorative part is thereby improved.

[0011] Because the support part and the cover part are connected to one another via two separate connecting strips running from the first channel opening to the second channel opening, with the core part arranged between the connecting strips, the support part and the cover part can jointly form the respective channel opening in an area at the front ends of the connecting strips. A three-dimensional box-shaped configuration of the support part and / or the cover part can thus be avoided, so that corner regions with three different levels can be avoided. The support part and the cover part can delimit a tubular cavity which can be open at its front sides to form the channel openings. The tubular cavity can preferably have a flow cross-section of essentially any shape.A completely circumferential and closed connecting strip is therefore not provided. Instead, two separate connecting strips are provided, which can be used simultaneously to connect the cover part to the carrier part, thereby reducing the production time for manufacturing the decorative part. The connecting strips preferably run essentially parallel to each other.

[0012] The core part preferably has a plurality of regularly and / or irregularly shaped connecting channels extending from the first channel opening to the second channel opening. The fluid is therefore not guided from the first channel opening to the second channel opening in a space between the core part on the one hand and the support part and / or the cover part on the other. Instead, the cavities of the core part can be used to guide the fluid through the core part itself. The flow cross-section for the fluid guided through the decorative part can thus be significantly increased. The manufacturing process used to produce the core part can be adapted accordingly.

[0013] Particularly preferably, the core part is made of a foamed material and / or can be produced by extrusion, in particular to form a honeycomb structure. If the core part is foamed, the foamed pores can, for example, be designed with a pore size large enough to ensure coalescence of the pores. Furthermore, it is possible to provide cores during production of the core part which, once removed, form the connecting channels. During extrusion, the connecting channels can be predetermined by the shape of a die and / or a punch provided for extrusion. The same applies if the core part is produced by extrusion.

[0014] In particular, the core part is clamped between the support part and the cover part. This eliminates the need for a separate connection between the core part and the support part and / or the cover part. For example, the core part can be pre-stressed between the support part and the cover part by slightly compressing some of the core part's cavities. This results in a good, stable connection of the core part in the cavity formed between the support part and the cover part, even without separate fastening.

[0015] The cover part is preferably connected to the carrier part by welding, needling, or sewing. During welding, plastic components in the cover part and the carrier part can be melted to form a material bond, in which fibers of the carrier part can preferably partially penetrate into the cover part and vice versa. When needling or sewing the cover part to the carrier part, a preferred orientation of the fibers of the carrier part and / or the cover part can be exploited to achieve a positive bond between the fibers of the carrier part and the fibers of the cover part with the aid of a yarn.

[0016] Particularly preferably, the cover part and the support part are designed as natural fiber pressed components, with the cover part and the support part in particular comprising a meltable plastic. Through the pressing process, the natural fibers can be easily pressed into a plastic, which, for example, forms a matrix for the natural fibers. This results in a stable composite that enables a two-dimensional and / or three-dimensional component with high strength.

[0017] The invention further relates to a motor vehicle with an interior trim comprising a decorative part, which can be designed and developed as described above, and with an air conditioning system for air conditioning an interior at least partially delimited by the interior trim, wherein the air conditioning system communicates with the decorative part for the supply and / or discharge of air. Due to the duct openings communicating with one another via the cavities of the core part, the decorative part can additionally assume the function of a fluid line for the air conditioning system, thus enabling a cost-effective decorative part with high functionality. The air conditioning system can draw in fresh air via the decorative part or direct conditioned air to a suitable outlet location.Preferably, an outlet nozzle is provided in the decorative part, in particular in the cover part, for introducing air conditioned by the air conditioning system into the interior of the motor vehicle. The outlet nozzle communicates with a cavity formed between the support part and the cover part. The outlet nozzle can be inserted in the first duct opening and / or the second duct opening.

[0018] The invention further relates to the use of a decorative part, which can be designed and further developed as described above, for the purpose of directing an air flow between the carrier part and the cover part, wherein the air flow is used in particular for air conditioning the passenger compartment of a motor vehicle. Due to the channel openings communicating with one another via the cavities of the core part, the decorative part can additionally assume the functionality of a fluid line for an air conditioning system, thus enabling a cost-effective decorative part with high functionality. The air conditioning system can draw in fresh air via the decorative part or direct conditioned air to a suitable outlet location. The use can be designed and further developed as explained above with reference to the decorative part and / or the motor vehicle.

[0019] The invention will be explained below by way of example with reference to the accompanying drawings using a preferred embodiment, wherein the features presented below can represent an aspect of the invention both individually and in combination. It shows: Figure: a schematic sectional view of a decorative part.

[0020] The decorative part 10 shown in the figure has a substantially flat, plate-shaped carrier part 12 that can be installed in the interior trim of a motor vehicle. For example, the decorative part 10 is intended for a side panel of a center console. A cover part 14 is connected to the carrier part 12. The cover part 14 has a decorative surface 15, for example coated, which faces into the interior of the motor vehicle for visual design. The carrier part 12 and the cover part 14 are designed as a natural fiber pressed component in which natural fibers can be pressed into a matrix comprising plastic fibers. The cover part 14 is welded to the carrier part 12 by melting some of the plastics in the carrier part 12 and in the cover part 14 in a hot-melt process and pressing them together to form a connecting strip 16.

[0021] The cover part 14 has a substantially U-shaped cross-section, so that a cavity is formed between the carrier part 12 and the cover part 14, in which cavity a core part 18 is arranged. The core part 18, which is made, for example, from a foam and has a plurality of interconnected cavities, can be clamped between the carrier part 12 and the cover part 14, in particular with prestressing. The core part 18, in a lightweight construction, can distribute forces acting on the cover part 14 and support it on the carrier part 12. The cavities of the core part 18 can, for example, form connecting channels 20 running in the longitudinal direction of the cavity formed between the carrier part 12 and the cover part 14, which can connect a first channel opening formed by the carrier part 12 and / or the cover part 14 with a second channel opening formed by the carrier part 12 and / or the cover part 14.The connecting channels 20 can be defined, for example, by support struts 22, via which forces between the cover part 14 and the support part 12 can be supported. For this purpose, the cross-section of the core part 18 can, for example, have a honeycomb or diamond structure that can be produced by extrusion.

[0022] The first channel opening and / or the second channel opening can, for example, be formed jointly by the support part 12 and the cover part 14 at the respective front end of the cavity formed between the support part 12 and the cover part 14. However, it is also possible for an opening to be provided in the support part 12 and / or in the cover part 14 to form the channel opening, wherein this opening is preferably extended via a branch channel into the interior of the core part 18 in order to be able to fluidically connect several connecting channels 20. An air conditioning system can, for example, be connected to one of the channel openings in order to draw in fresh air via the connecting channels 20 and the other channel opening or to discharge conditioned air to the interior of the motor vehicle.

Claims

[1] Decorative part (10) for an interior panel of a motor vehicle, with a carrier part (12) comprising natural fibres for fastening in the motor vehicle, a core part (18) having cavities for supporting forces and a cover part (14) having natural fibres attached to the carrier part (12) for forming a decorative surface (15), wherein the core part (18) is arranged between the carrier part (12) and the cover part (14) and the carrier part (12) and / or the cover part (14) define a first channel opening and the carrier part (12) and / or the cover part (14) define a second channel opening communicating with the first channel opening via the core part (18), characterized by , that the cover part (14) is coated with a lacquer on the decorative surface (15) for protection and / or for the formation of the visible decorative surface (15) and the carrier part (12) and the cover part (14) are connected to one another via two connecting strips (16) which are separate from one another and run from the first channel opening to the second channel opening, wherein the core part (18) is arranged between the connecting strips (16). [2] Decorative part (10) according to claim 1 characterized by that the support part (12) and the cover part (14) delimit a tubular cavity which is open at its end faces to form the channel openings. [3] Decorative part (10) according to one of claims 1 to 2 characterized by that the core part (18) has a plurality of regularly and / or irregularly shaped connecting channels (20) extending from the first channel opening to the second channel opening. [4] Decorative part (10) according to one of claims 1 to 3 characterized bythat the core part (18) is made of a foamed material and / or can be produced by extrusion, in particular to form a honeycomb structure. [5] Decorative part (10) according to one of claims 1 to 4 characterized by that the core part (18) is clamped between the carrier part (12) and the cover part (14). [6] Decorative part (10) according to one of claims 1 to 5 characterized by that the cover part (14) is connected to the support part (12) by welding, needling or sewing. [7] Decorative part (10) according to one of claims 1 to 6 characterized by that the cover part (14) and the support part (12) are designed as a natural fiber pressed component, wherein in particular the cover part (14) and the support part (12) comprise a meltable plastic. [8] Motor vehicle with an interior trim having a decorative part (10) according to one of claims 1 to 7 and an air conditioning system for air conditioning an interior space at least partially delimited by the interior trim, wherein the air conditioning system communicates with the decorative part (10) for supplying and / or removing air. [9] Use of a decorative part (10) according to one of claims 1 to 7 for the purpose of directing an air flow between the carrier part (12) and the cover part (14), wherein in particular the air flow is used for air conditioning a passenger compartment of a motor vehicle.

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