Automotive interior trim part

Abstract

The invention relates to a motor vehicle interior trim part (10) comprising a decorative layer (11) with a front side (12) designed as a visible side and a back side (13) opposite the front side (12), wherein the decorative layer (11) comprises SMA wires (15) for realizing an anti-slip function of the decorative layer (11), wherein the SMA wires (15) are electrically contacted or contactable and without electrical current flow through the SMA wires (15) in a first form and with electrical current flow through the SMA wires (15) in a second form which differs from the first form, wherein the front side (12) of the decorative layer (11) has a first state when the SMA wires (15) are in the first form and a second state when the SMA wires (15) are in the second form, wherein the front side (12) of the decorative layer (11) forms an anti-slip surface in the second state.

Description

[0001] The invention relates to a motor vehicle interior trim part.

[0002] Automotive interior trim parts are understood to mean, in particular, decorative parts (also: trim parts) and / or trim parts for a vehicle interior. Numerous automotive interior trim parts are installed in the vehicle interior, for example, door panels, console and instrument panels, for example, center console panels. Automotive interior trim parts also include control buttons and their covers. Automotive interior trim parts also include, in particular, door panels, for example, the driver's door, the passenger door, or other doors in the vehicle, table surfaces in the vehicle, covers, for example, the center console, (extendable) boards or tables, seat panels or seat covers, for example, the driver's seat or the passenger seat, or floor coverings.Furthermore, the vehicle interior trim part may also be a sun visor and / or a privacy screen, which can be mounted or inserted or attached, in particular, in the area of ​​one or more of the windows of the vehicle.

[0003] With such automotive interior trim parts, it may be desirable to provide the option of charging a mobile device positioned on the vehicle interior trim part. However, even if such a charging function is provided, the problem often arises that the mobile device slips on the surface of the vehicle interior trim part. This can be at least largely avoided by an anti-slip finish on the surface of the vehicle interior trim part, and thus on the front side of a decorative layer of the vehicle trim part. However, a permanent anti-slip finish on the surface is often perceived as visually unappealing or disadvantageous for other reasons.

[0004] The invention is based on the object of specifying a new motor vehicle interior trim part, in particular a new motor vehicle interior trim part in which a front side of a decorative layer forms an anti-slip surface only when required, for example when a mobile terminal is placed on it.

[0005] This object is achieved by a motor vehicle interior trim part having the features of claim 1. Advantageous embodiments and further developments are specified in the dependent claims.

[0006] The automotive interior trim part according to the invention comprises a decorative layer with a front side configured as the visible side and a rear side opposite the front side. The decorative layer comprises SMA wires to implement an anti-slip function of the decorative layer. The SMA wires are electrically contacted or contactable. Without electrical current flowing through the SMA wires, the SMA wires are present in a first form, and with electrical current flowing through the SMA wires, they are present in a second form, wherein the second form differs from the first form. The front side of the decorative layer has a first state when the SMA wires are present in the first form and a second state when the SMA wires are present in the second form. In the second state, the front side of the decorative layer forms an anti-slip surface.

[0007] In other words, without electrical current flowing through the SMA wires, the SMA wires exhibit the first shape, and the front side of the decorative layer is in the first state. When the electrical current flowing through the SMA wires is switched on, the SMA wires assume the second shape, and the front side of the decorative layer is converted to the second state. The SMA wires remain in the second shape as long as the electrical current flowing through the SMA wires is maintained, and the front side of the decorative layer accordingly remains in the second state. When the electrical current flowing through the SMA wires is switched off, the SMA wires return to the first shape, and the front side of the decorative layer is converted from the second state to the first state.

[0008] The advantages of the invention lie in particular in the fact that, by using SMA wires, the shape of which can be changed by applying an electrical current, the front side of the decorative layer can assume two different states. By simply switching the electrical current through the SMA wires on and off, an anti-slip surface, for example a rough surface, can be formed on the front side of the decorative layer and then removed again, i.e. converted back into a normal, for example flat, in particular smooth or even, decorative surface. Thus, the anti-slip surface, for example in the form of a rough surface structure, can only be formed when it is needed or desired, for example when placing a mobile device on it. Otherwise, the front side of the decorative layer can have its otherwise usual, for example flat, in particular smooth or even structure.

[0009] A further advantage is that, compared to conventional anti-slip coatings or anti-slip structures on the decorative surface, it is possible to reduce the installation height of the vehicle interior trim part.

[0010] The phrase "on the rear side" does not necessarily mean that a first component of the automotive interior trim part must be arranged directly and / or immediately on the rear side of a second component. The first component should simply be arranged on the side of the respective component opposite the visible side. Additional layers, in particular intermediate layers, can also be arranged between the two components, so that the first component is arranged (only) indirectly on the rear side of the second component.

[0011] SMA wires (SMA: shape memory alloy) are wires made of a shape memory alloy. When energized, i.e., when an electric current flows through the wire, the SMA wire heats up due to its electrical resistance and changes its shape from a first shape to a second. When the current is removed, the SMA wire cools and changes its shape back to its original shape.

[0012] The first form of the SMA wires can be a conventional elongated, linear, or thread-like shape, which each of the SMA wires has, wherein the SMA wires are integrated into the decorative layer, for example, a fabric, in a conventional manner and with a conventional shape. The second form of the SMA wires can, for example, be a wave-like and / or sinusoidal shape along the longitudinal extent of each wire. In the second form, each SMA wire can, in addition to its conventional elongated, linear, or thread-like shape, have a shape that extends perpendicular to the longitudinal extent of the SMA wire, in particular in a plane perpendicular to the longitudinal extent of the SMA wire.

[0013] In particular, the first shape of the SMA wires is the basic shape of the wires. The second shape of the SMA wires is, in particular, a modified shape compared to the basic shape. For example, the SMA wires in the second shape are extended or shortened compared to the first shape. The SMA wires can also bend inward in the second shape, for example due to expansion when energized, and / or assume a helical and / or sinusoidal and / or wave-like shape.

[0014] The vehicle interior trim part can have a shell-like shape overall, which is particularly suitable for accommodating a mobile device. The vehicle interior trim part can also have a shape with at least one edge, which is particularly suitable for supporting a mobile device. It is also possible for the vehicle interior trim part to have a substantially flat area, which is particularly suitable for supporting a mobile device. Slipping of the mobile device can be prevented by the formation of the anti-slip surface.

[0015] One embodiment of the invention provides that the decorative layer is or comprises a fabric, wherein the fabric comprises the SMA wires. For example, the SMA wires are woven into the fabric.

[0016] The fabric has the advantage of a comparatively soft decorative surface, so that scratching of a mobile device placed on it is at least largely avoided.

[0017] A further advantage of the fabric is that it offers the possibility of integrating optical fibers. Furthermore, the fabric's air-permeability property can be utilized to eliminate the need for additional cutouts in the decorative layer, for example, to direct a cooling fluid, such as a cooling air stream, to the front of the decorative layer.

[0018] The fabric comprising the SMA wires may comprise one or more other thread types, for example, textile fibers and / or glass fibers and / or natural fibers and / or synthetic fibers and / or glass fibers and / or carbon fibers. For example, the SMA wires may be woven into a fabric comprising one or more other thread types.

[0019] A further development of the invention provides for a wireless charging unit (also known as a wireless charging unit) to be arranged on the back of the decorative layer for charging a mobile device positioned on the front of the decorative layer. In this case, the anti-slip surface is designed to at least largely prevent a mobile device positioned on the front of the decorative layer from slipping.

[0020] The mobile device can be a mobile phone, a cell phone, a smartphone, a tablet, a computer, a laptop, a pager, a watch, in particular a smartwatch, or similar.

[0021] The anti-slip surface formed by the front side of the decorative layer in the second state can be a surface with elevations and / or depressions. It can be a rough surface. The anti-slip surface is created by converting the SMA wires into the second shape.

[0022] In the first state, the front side of the decorative layer can be at least largely flat, for example smooth and / or even. In particular, a largely flat surface is understood to mean a surface of the decorative layer which, unlike the anti-slip surface, does not form any elevations and / or depressions. In other words: a "flat surface" is understood to mean, in particular, a flat and / or smooth and / or even and / or plane and / or two-dimensional surface which, although it may possibly have or form an overarching shape of the vehicle interior trim part, has little or no small structure, for example roughness.However, in the case of a flat surface, a small structure, for example the small structure of a wood grain or a fabric, is not taken into account, even in the case of non-energized SMA wires, since many decorations, for example wood or fabric, entail a structuring of the surface, which in the case of wood is due to the type of wood and in the case of fabrics to the weave and / or the material and / or the type of thread.

[0023] In contrast, an anti-slip surface is understood to be a surface with a microstructure, i.e., a surface with elevations and / or depressions as a microstructure beneath the overall design of the vehicle interior trim part. The anti-slip surface can be rough, uneven, hilly, wavy, and / or three-dimensional.

[0024] The vehicle interior trim part may comprise a carrier arranged on the rear side of the vehicle interior trim part or in the region of the rear side of the vehicle interior trim part. The carrier may be a plastic carrier, for example, injection-molded or manufactured by injection molding and attached or glued to the vehicle interior trim part. The aforementioned wireless charging unit may be integrated into this carrier and / or arranged on this carrier.

[0025] It can be provided that the vehicle interior trim part comprises a power source or a power connection for the indirect or direct electrical contacting of the SMA wires.

[0026] According to a further embodiment of the invention, the automotive interior trim part comprises a cooling device for cooling a mobile device positioned on the front side of the decorative layer. Cooling the mobile device allows for a more stable charging process and higher charging performance than without cooling.

[0027] The cooling device can comprise a fan and / or a fluid-guiding device, for example, an air-guiding device. Fans and / or fluid-guiding devices are particularly designed and arranged such that a fluid, for example, air, can be conveyed from a ventilation and / or air-conditioning system of the motor vehicle to the front side of the decorative layer, in particular for cooling a mobile terminal positioned there. The fluid is, in particular, a gaseous fluid, in particular air.

[0028] One embodiment of the invention provides for a lamination, in particular a soft lamination, to be arranged on the back of the decorative layer, for example, between the back of the decorative layer and the wireless charging unit or a wireless charging unit. The lamination is, for example, a spacer fabric. In particular, the lamination can be fluid-permeable, in particular air-permeable.

[0029] The lamination can be designed and arranged in such a way that a fluid, in particular air, can be introduced into the lamination laterally and / or on a first side of the lamination opposite the back of the decorative layer. For example, the particularly cold fluid, for example air, comes from a ventilation and / or air conditioning system of the motor vehicle. Furthermore, the lamination can be designed and arranged in such a way that the introduced fluid, for example air, exits on a second side of the lamination facing the back of the decorative layer and from there the decorative layer, for example a fabric, flows to the front of the decorative layer to cool a mobile terminal device positioned there.

[0030] For example, a decorative layer that is or comprises a fabric is fluid-permeable, in particular air-permeable, and thus allows air to flow through to the front side of the decorative layer; additional perforation of the decorative layer is not necessary. The strength of the fluid flow, in particular air flow, can be influenced by the design and / or shape and / or other properties of the fabric or of the decorative layer in general. For example, the strength of the air flow can differ from the shape of the SMA wires. For example, the strength of the fluid flow in the first state of the decorative layer with SMA wires in the first shape can be lower or higher than the strength of the fluid flow in the second state of the decorative layer with SMA wires in the second shape. The strength of the cooling fluid flow can thus be adjusted and / or controlled by energizing the SMA wires.

[0031] A further development of the invention provides that the vehicle interior trim part comprises a lighting device, for example, for implementing a lighting scene and / or for visualizing the charging process or charging status of the mobile device. For example, a red light can indicate a charging process, and a green light can indicate a fully charged mobile device. The light thus provides active feedback to the user.

[0032] For example, the lighting device can be designed to display a light scene and / or play a light animation that signals a charging state and / or charging process of the charging unit and / or the mobile terminal positioned on the front side of the decorative layer.

[0033] It can be provided that the lighting device comprises one or more LEDs. The LED or LEDs can be arranged on and / or at least partially in the decorative layer, and in the case of a fabric as the decorative layer, thus in the fabric. For example, the LED or LEDs can be applied to the back of the decorative layer, for example a fabric, for example mounted and / or printed. The LED or LEDs can also be arranged on a film arranged on the back of the decorative layer, in particular between a lamination or a wireless charging unit on the one hand and the back of the decorative layer on the other. This film is in particular perforated to enable the above-described air flow from the lamination through the decorative layer to the front of the decorative layer. The LEDs can be arranged both on the front side of the film oriented towards the decorative layer and on the back of the film.

[0034] Furthermore, the lighting device can comprise electrical contact and / or control of the LED(s). The electrical contact and / or control can be incorporated into the decorative layer or applied, for example, printed, to the decorative layer. In the case of a fabric as the decorative layer, the contact and / or control can be woven in, for example. In the case of the aforementioned film with the LED(s), the electrical contact and / or control can also be implemented via the electrical conductor integrated into the film or applied to the film.

[0035] The lighting device can also comprise one or more light guides. If a fabric is used as the decorative layer, the light guide(s) can be woven into the fabric. The lighting device can comprise at least one coupling element, wherein the coupling element is provided and / or designed to couple light into the light guide(s). The coupling element is preferably arranged on one side or in a side region of the decorative layer.

[0036] The invention will be explained in more detail below with regard to further features and advantages based on the description of exemplary embodiments and with reference to the accompanying schematic drawings. Fig. 1 shows a section of a first embodiment of a motor vehicle interior trim part according to the invention in a schematic sectional view; Fig. 2 the front side of the decorative layer of the vehicle interior trim part Fig. 1 in a first state in a schematic perspective view; Fig. 3 the front side of the decorative layer of the vehicle interior trim part Fig. 1 in a second state in a schematic perspective view; Fig. 4 a schematic exploded view of a second embodiment of a motor vehicle interior trim part according to the invention; Fig. 5 is a schematic exploded view of a third embodiment of a motor vehicle interior trim part according to the invention; Fig. 6 the decorative layer of the vehicle interior trim part according to Fig. 5 in a schematic plan view of the back of the decorative layer; Fig. 7 the decorative layer of a fourth embodiment of a motor vehicle interior trim part according to the invention in a schematic plan view.

[0037] Fig. 1, Fig. 4, Fig. 5 and Fig. 7 each show a motor vehicle interior trim part 10 according to the invention, comprising a decorative layer 11 with a front side 12 formed as a visible side and a rear side 13 opposite the front side 12. The decorative layer 11 can be a fabric, for example. The motor vehicle interior trim part 10 further comprises a wireless charging unit 14 arranged on the rear side 13 of the decorative layer 11 for charging a mobile terminal (not shown) positioned on the front side 12 of the decorative layer 11.

[0038] The mobile device can be, for example, a mobile phone, a cell phone, a smartphone, a tablet, a computer, a laptop, a pager, a watch, in particular a smartwatch, or similar.

[0039] The decorative layer 11, for example a fabric, comprises, as Fig. 2, Fig. 3 and Fig. 7 show SMA wires 15 for realizing an anti-slip function of the decorative layer 11, wherein the SMA wires 15 can be woven into the fabric during the formation of the decorative layer 11 as a fabric.

[0040] The SMA wires 15 are connected via a power connector 17, which is Fig. 1 is shown schematically. Without electrical current flow through the SMA wires 15, the SMA wires 15 are in a first form, which is Fig. 2. In this case, the front side 12 of the decorative layer 11 has a first state in which it is flat. When an electrical current flows through the SMA wires 15, the SMA wires 15 are in a second shape that differs from the first shape. The second shape of the SMA wires 15 is shown in Fig. 3. When the SMA wires 15 are energized, the front side 12 of the decorative layer 11 has a second state in which it forms an anti-slip surface 16 with elevations and depressions, which is designed to prevent a mobile terminal positioned on the front side 12 of the decorative layer 11 from slipping. When the SMA wires 15 are energized, the SMA wires 15 are transformed from the first shape to the second shape, and the front side 12 of the decorative layer 11 is transformed from the first state to the second state.

[0041] Furthermore, the motor vehicle interior trim part 10 according to the embodiments according to Fig. 1, Fig. 4, Fig. 5 and Fig. 7 a lamination 18, in particular a soft lamination, arranged on the back 13 of the decorative layer 11. The lamination 18 is, for example, an air-permeable spacer fabric.

[0042] Furthermore, the vehicle interior trim part 10 comprises Fig. 1 shows a cooling device 19 for cooling a mobile terminal positioned on the front side 12 of the decorative layer 11. The cooling device 19 can be a fan. The cooling device 19 can also be a fluid-conducting device that transports fluid, for example, air, from the ventilation and / or air conditioning system of the motor vehicle to the mobile terminal.

[0043] The fluid coming from the fan or from the fluid guiding device is directed to the front side 12 of the decorative layer 11, whereby the fact that the decorative layer 11, for example a fabric, is fluid-permeable, in particular air-permeable, is utilized, and thus no additional perforation of the decorative layer 11 is required. The strength of the fluid flow, in particular air flow, can be influenced by the design and / or shape and / or other properties of the decorative layer 11, for example a fabric. For example, the strength of the fluid flow can depend on the shape of the SMA wires 15. For example, the strength of the fluid flow in the first state of the decorative layer 11 with SMA wires 15 in the first shape can be lesser or greater than the strength of the fluid flow in the second state of the decorative layer 11 with SMA wires 15 in the second shape.The strength of the cooling fluid flow can thus be adjusted and / or controlled by energizing the SMA wires 15.

[0044] According to the embodiment according to Fig. 1, the fluid, for example air, is introduced from the cooling device 19 laterally into the lamination 18. Alternatively, the fluid could also be introduced at a rear side of the lamination 18, in Fig. 1 from below, into the lamination. In the lamination 18, the introduced fluid flows to the Fig. 1 upper front side of the lamination 18, exits there from the lamination 18 and at the back 13 of the decorative layer 11 into the fabric of the decorative layer 11 and then flows through the fabric to the front side 12 of the decorative layer 11 for cooling a mobile terminal device positioned there.

[0045] The vehicle interior trim part 10 according to the embodiments according to Fig. 4 to Fig. 7 each includes a lighting device 20 for implementing a lighting scenario and / or for visualizing the charging process or charging status of the mobile device. For example, a red light can indicate a charging process, and a green light can indicate a fully charged mobile device.

[0046] The lighting device 20 of the motor vehicle interior trim part 10 according to the embodiment according to Fig. 4 comprises a plurality of LEDs 21 arranged on a preferably perforated and thus fluid-permeable film 22. The film 22 is arranged on the back 13 of the decorative layer 11, between the decorative layer 11 and the lamination 18. The LEDs 21 are arranged on the front side of the film 22, oriented toward the decorative layer 11. Alternatively, the LEDs 21 could also be arranged on the back of the film 22.

[0047] The lighting device 20 of the motor vehicle interior trim part 10 according to the embodiment according to Fig. 5 comprises a plurality of LEDs 21, wherein the LEDs 21 are arranged on the back 13 of the decorative layer 11. Furthermore, the lighting device 20 comprises an electrical contact 23 and / or control of the LEDs 21, which is applied to the decorative layer 21, for example a fabric, or integrated into the decorative layer 21, for example a fabric, as Fig. 6 shows.

[0048] The lighting device 20 of the motor vehicle interior trim part 10 according to the embodiment according to Fig.7 comprises a plurality of light guides 24, which, in the example shown, are woven into the decorative layer 11 comprising or consisting of a fabric. Furthermore, the lighting device 20 comprises a coupling element 25, wherein the coupling element 25 is provided and / or configured to couple light into the light guides 24. The coupling element 25 is arranged on one side of the decorative layer 11. List of reference symbols 10 Automotive interior trim part 11 decorative layer 12 Front side (decorative layer) 13 Back (decorative layer) 14 wireless charging unit 15 SMA wire 16 Anti-slip surface 17 Power connection 18 Laminating 19 Cooling device 20 Lighting device 21 LED 22 Slide 23 Contacting 24 light guides 25 coupling element

Claims

[1] Motor vehicle interior trim part (10), comprising a decorative layer (11) with a front side (12) designed as a visible side and a back side (13) opposite the front side (12), wherein the decorative layer (11) comprises SMA wires (15) for realizing an anti-slip function of the decorative layer (11), wherein the SMA wires (15) are electrically contacted or contactable and are in a first form without electrical current flow through the SMA wires (15) and in a second form, which differs from the first form, when electrical current flows through the SMA wires (15), wherein the front side (12) of the decorative layer (11) has a first state when the SMA wires (15) are in the first form and a second state when the SMA wires (15) are in the second form, wherein the front side (12) of the decorative layer (11) forms an anti-slip surface in the second state. [2] Motor vehicle interior trim part (10) according to claim 1, characterized by , that wherein the decorative layer (11) is or comprises a fabric, wherein the fabric comprises the SMA wires (15). [3] Motor vehicle interior trim part (10) according to claim 2, characterized by that the SMA wires (15) are woven into the fabric. [4] Motor vehicle interior trim part (10) according to one of the preceding claims, characterized by , that a wireless charging unit (14) for charging a mobile terminal positioned on the front side (12) of the decorative layer (11) is arranged on the back side (13) of the decorative layer (11), wherein the anti-slip surface is designed to at least largely prevent slipping of a mobile terminal positioned on the front side (12) of the decorative layer (11). [5] Motor vehicle interior trim part (10) according to one of the preceding claims, characterized bythat the anti-slip surface is a surface with elevations and / or depressions. [6] Motor vehicle interior trim part (10) according to one of the preceding claims, characterized by that the front side (12) of the decorative layer (11) is at least largely flat in the first state. [7] Motor vehicle interior trim part (10) according to one of the preceding claims, characterized by that the motor vehicle interior trim part (10) comprises a power source or a power connection (17) for indirect or direct electrical contacting of the SMA wires. [8] Motor vehicle interior trim part (10) according to one of the preceding claims, characterized by that the motor vehicle interior trim part (10) comprises a cooling device (19) for cooling a mobile terminal positioned on the front side (12) of the decorative layer (11). [9] Motor vehicle interior trim part (10) according to claim 8, characterized bythat the cooling device (19) comprises a fan and / or a fluid guiding device. [10] Motor vehicle interior trim part (10) according to claim 8 or 9, characterized by that a lamination (18) is arranged on the rear side (13) of the decorative layer (11), into which a fluid can be introduced laterally and / or on a first side opposite the rear side (13) of the decorative layer (11), wherein the lamination (18) is designed and arranged in such a way that the introduced fluid emerges on a second side of the lamination facing the rear side (13) of the decorative layer (11) and flows from there through the decorative layer (11) to the front side (12) of the decorative layer (11) for cooling a mobile terminal positioned there. [11] Motor vehicle interior trim part (10) according to one of the preceding claims, characterized by that the motor vehicle interior trim part (10) comprises a lighting device (20). [12] Motor vehicle interior trim part (10) according to claim 11 and claim 4, characterized by that the lighting device (20) is designed to display a light scene and / or play a light animation that signals a charging state and / or charging process of the charging unit (14) and / or the mobile terminal positioned on the front side of the decorative layer. [13] Motor vehicle interior trim part (10) according to claim 11 or 12, characterized by , that the lighting device (20) comprises one or more LEDs (21), wherein the LED or LEDs (21) are arranged on and / or at least partially in the decorative layer (11) and / or on a film (22) arranged on the back (13) of the decorative layer (11). [14] Motor vehicle interior trim part (10) according to one of claims 11 to 13, characterized by that the lighting device (20) comprises one or more light guides (24). [15] Motor vehicle interior trim part (10) according to claim 14 and claim 2, characterized by that the light guide(s) (24) are woven into the fabric.

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