Automotive interior trim panel

Abstract

The invention relates to an automotive interior trim part (10), wherein the automotive interior trim part (10) has a layered structure, the layered structure 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). The invention is characterized in that the vehicle interior trim part (10) has at least one shape memory material (15).

Description

[0001] The invention relates to a motor vehicle interior trim part according to the preamble of claim 1.

[0002] Interior trim parts for vehicles primarily refer to decorative elements (also known as trim pieces) and / or paneling for the vehicle interior. Numerous interior trim parts are installed in the vehicle interior, such as door panels, console and instrument panel covers, and center console trim. Control buttons and their covers are also considered interior trim parts.

[0003] Such automotive interior trim parts often require functional integration, for example a lighting function, a heating function, an acoustic function or even a (haptic) feedback function for integrated switches.

[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 functional integration can be realized with low material usage.

[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 respective dependent claims.

[0006] The motor vehicle interior trim part according to the invention has a layered structure, wherein the layered structure comprises a decorative layer with a front side designed as a visible side and a back side opposite the front side.

[0007] The invention is characterized in that the motor vehicle interior trim part has at least one shape memory material, in particular for functional realization.

[0008] The advantages of the invention lie in particular in the fact that the use of shape memory materials enables functions in the component with relatively little material input. Furthermore, this requires only a small amount of installation space.

[0009] Furthermore, shape memory materials can be used to create haptic effects, particularly by expanding the shape memory material, which provide a feedback function for a user, so that, for example, the driver receives haptic feedback when operating functional elements, for example in the area of ​​the center console, the steering wheel, the instrument panel, the backrest, the headrest or the door panel, and averting his gaze from the traffic situation can thus be avoided.

[0010] The decorative layer is preferably or comprises a wood veneer and / or a plastic, for example a foil, and / or stone and / or glass and / or fabric and / or textile and / or a soft-touch material and / or metal, in particular aluminum, and / or carbon. The decorative layer can also be transparent or translucent.

[0011] It can be provided that the decorative layer itself is or comprises the shape memory material at least in sections, in particular if the decorative layer is or comprises a metal.

[0012] The automotive interior trim part can be a single-component component, for example, made of aluminum. In this case, the decorative layer itself is preferably the shape memory material, at least in sections.

[0013] According to a further development of the invention, the shape memory material is introduced into the decorative layer and / or applied to the decorative layer, for example to the back of the decorative layer.

[0014] It can be provided that the shape memory material forms a symbol in or on the decorative layer, in particular in a plan view of the visible side of the vehicle interior trim part, preferably in the activated state. The symbol can be one or more functional symbols and / or geometries and / or shapes and / or emblems and / or one or more letters and / or lettering and / or characters and / or logos and / or lines, in particular shape-following lines, and / or other design elements, in a plan view of the visible side of the decorative layer.

[0015] Preferably, the layer structure comprises a carrier layer arranged on the back of the decorative layer, for example made of plastic or NFPP or natural fiber injection molding material or a biological material.

[0016] The phrase "on the back of the decorative layer" does not necessarily mean that the carrier layer must be arranged directly and / or immediately on the back of the decorative layer. The carrier layer should simply be arranged on the side opposite the front side of the decorative layer, which is designed as the visible side. Additional layers, in particular intermediate layers, can also be arranged between the decorative layer and the carrier layer, so that the carrier layer is arranged indirectly on the back of the decorative layer.

[0017] It may be provided that the shape memory material is incorporated into the substrate layer and / or applied to the substrate layer, for example to a front side of the substrate layer.

[0018] Preferably, the layer structure comprises at least one further layer, in particular an adhesive layer and / or a nonwoven fabric and / or a film, wherein the shape memory material is incorporated into the further layer or into one or more further layers and / or is applied to the further layer or to one or more of the further layers.

[0019] It is possible for a first adhesive layer and a second adhesive layer to be arranged on the back of the decorative layer. In particular, the first adhesive layer can be arranged on the back of the decorative layer. The second adhesive layer can, in turn, be arranged, especially in sections, on the back of the first adhesive layer. Furthermore, a nonwoven fabric can be arranged on the back of the decorative layer by means of the first and second adhesive layers. Alternatively, other stabilizing layers can be provided instead of the nonwoven fabric.

[0020] One embodiment of the invention provides that the layer structure comprises an FGM layer (FGM: abbreviation for shape memory material), which is formed from the shape memory material. The FGM layer can, for example, be arranged on the back of the decorative layer.

[0021] Preferably, a light function of the shape memory material is realized by a shape memory material incorporated or applied in or on a layer of the layer structure close to the visible side, in particular in order to create the strongest possible optical effect on the visible side of the motor vehicle interior trim part.

[0022] For a haptic effect, a shape memory material incorporated or applied in or to a layer of the layer structure close to the visible side is also advantageous, especially since reversible stretching has limited characteristics.

[0023] A heating function by means of the shape memory material is also preferably to be realized by a shape memory material incorporated or applied in or on a layer close to the visible side, in particular in order to ensure the most effective radiation possible.

[0024] The layer closest to the visible side can be, for example, the decorative layer and / or an adhesive layer and / or a fleece.

[0025] It can be provided that the FGM layer forms a light mask with a darkening effect, wherein the light mask is at least partially transparent or translucent when the shape memory material is energized and is opaque or at least partially opaque when the shape memory material is energized, or alternatively is opaque or at least partially opaque when the shape memory material is energized and at least partially transparent or translucent when the shape memory material is energized.

[0026] The light mask can also be designed dynamically, in particular such that the light mask appears transparent or translucent in varying sections, particularly over time, and opaque in the other sections. For this purpose, a series connection, in particular of several shape memory materials, preferably with separate control, is preferably provided.

[0027] The shape memory material can be or comprise a metallic shape memory material, in particular a, for example, stamped, sheet metal and / or a wire mat, and / or a metal alloy and / or a granulate and / or a component of a granulate and / or a shape memory polymer and / or a magnetic shape memory material and / or a piezoelectric shape memory material and / or an electroactive polymer. The shape memory material can also be admixed to a granulate as an additive.

[0028] If the shape memory material is a stamped sheet, one or more sections of the sheet can be activated when current is applied, causing these sections to undergo a shape change.

[0029] According to one embodiment of the invention, the vehicle interior trim part comprises one or more activation means for controlling the shape memory material by means of a pulse, wherein the pulse is provided by means of light and / or electromagnetic waves and / or electricity and / or temperature and / or force and / or acoustics and / or sensors.

[0030] Preferably, the shape memory material is provided to realize a deformation function and / or a light function and / or an acoustic function and / or a haptic effect, in particular by expansion of the shape memory material, and / or a heating function, in particular by heating during the expansion of the shape memory material after a, preferably electrical, control.

[0031] A haptic effect can be provided, in particular, as a feedback function and / or tactile aid for a user in, on, or near switches and / or sensors.

[0032] It may be provided that the vehicle interior trim part includes an electrical or electronic control for the shape memory material.

[0033] Preferably, the vehicle interior trim part comprises one or more light elements, for example LEDs, and / or one or more sensor elements and / or one or more heating elements.

[0034] The light element(s) and / or the sensor element(s) can be integrated into the carrier layer or arranged on the carrier layer, in particular the back of the carrier layer.

[0035] For example, the light element(s) and / or the sensor element(s) and / or the heating element(s) can be used to activate the shape memory material and thereby form, in particular, activation means.

[0036] The invention is explained in more detail below with regard to further features and advantages based on the description of an embodiment and with reference to the enclosed schematic drawing.

[0037] Fig.1 shows a section of a motor vehicle interior trim part 10 according to the invention in a schematic sectional view. The motor vehicle interior trim part 10 according to the invention has a layered structure, wherein the layered structure comprises a decorative layer 11 with a front side 12 formed as the visible side and a rear side 13 opposite the front side 12. The decorative layer 11 is preferably a wood veneer. The layered structure further comprises a carrier layer 14, for example made of plastic, arranged on the rear side 13 of the decorative layer 11.

[0038] The layer structure further comprises three additional layers: a first adhesive layer 17', a second adhesive layer 17", and a nonwoven fabric 18. The first adhesive layer 17' and the second adhesive layer 17" are arranged on the back side 13 of the decorative layer 11. The first adhesive layer 17' is arranged directly on the back side 13 of the decorative layer 11, whereas the second adhesive layer 17" is arranged section by section on the back side of the first adhesive layer 17'. Due to the section by section of the second adhesive layer 17" free space is formed in this layer, which can form a symbol when viewed from above on the visible side of the decorative layer 11. Furthermore, the nonwoven fabric 18 is arranged on the back side 13 of the decorative layer 11 by means of the first and second adhesive layers 17', 17" . The decorative layer 11 and the first adhesive layer 17' are preferably at least translucent. The second adhesive layer 17" can be opaque.Furthermore, the nonwoven fabric 18 and the carrier layer 14 can be at least translucent.

[0039] According to the invention, the automotive interior trim part 10 comprises a shape memory material 15 for functional realization, wherein the shape memory material 15 is incorporated into the second adhesive layer 17". In addition to the shape memory material, other materials may also be incorporated into the second adhesive layer 17".

[0040] The automotive interior trim panel 10 comprises several light elements 19 designed as LEDs. The light elements 19 are arranged on the rear side 20 of the carrier layer 14. The light elements 19 can be used to activate the shape memory material 15 by means of a pulse, the pulse being transmitted by light and / or electromagnetic waves. The automotive interior trim panel 10 can alternatively or additionally include an electrical or electronic control (not shown in the figure) for the shape memory material.

[0041] The shape memory material 15 is designed to implement a deformation function. When activated, the shape memory material 15 expands the second adhesive layer 17" both horizontally H and vertically V. If the decorative layer 11, the first adhesive layer 17', the nonwoven fabric 18, and the carrier layer 14 are translucent, and the second adhesive layer 17" is opaque, the symbol formed by the sectionally applied second decorative layer 17" can change when backlit by the light elements 19. This occurs when the second adhesive layer 17" expands due to the activation of the shape memory material 15, specifically by reducing the size of the open areas in the second adhesive layer 17" through which the light from the light elements 19 passes. In this way, the size of the symbol highlighted by backlighting can be varied. List of reference symbols 10 Automotive interior trim parts 11 Decorative layer 12 Front side (decorative layer) 13 Back side (decorative layer) 14 Carrier layer 15 Shape memory materials 16 Front side (carrier layer) 17' adhesive layer 17" adhesive layer 18 fleece 19 light elements 20 Back side (carrier layer) H Horizontal V Vertical

Claims

[1] Automotive interior trim part (10), wherein the motor vehicle interior trim part (10) has a layered structure, wherein the layered structure comprises a decorative layer (11) with a front side (12) formed as a visible side and a rear side (13) opposite the front side (12), characterized by , that the motor vehicle interior trim part (10) has at least one shape memory material (15). [2] Motor vehicle interior trim part (10) according to claim 1, characterized by that the shape memory material (15) is introduced into the decorative layer (11) and / or applied to the decorative layer (11). [3] Motor vehicle interior trim part (10) according to claim 1 or 2, characterized by that the layer structure comprises a carrier layer (14) arranged on the back (13) of the decorative layer (11). [4] Motor vehicle interior trim part (10) according to claim 3, characterized bythat the shape memory material (15) is introduced into the carrier layer (14) and / or applied to the carrier layer (14). [5] Motor vehicle interior trim part (10) according to one of the preceding claims, characterized by that the layer structure comprises at least one further layer, wherein the shape memory material (15) is introduced into the further layer or into one or more further layers and / or is applied to the further layer or to one or more of the further layers. [6] Motor vehicle interior trim part (10) according to one of the preceding claims, characterized by that the layer structure has an FGM layer, wherein the FGM layer is formed by the shape memory material (15). [7] Motor vehicle interior trim part (10) according to claim 6, characterized bythat the FGM layer forms a light mask with a darkening effect, wherein the light mask is transparent or translucent when the shape memory material (15) is energized and is opaque or at least partially opaque when the shape memory material (15) is not energized. [8] Motor vehicle interior trim part (10) according to one of the preceding claims, characterized by that the shape memory material (15) is or comprises a metallic shape memory material and / or a metal alloy and / or a granulate and / or component of a granulate and / or a shape memory polymer and / or a magnetic shape memory material and / or a piezoelectric shape memory material and / or an electroactive polymer. [9] Motor vehicle interior trim part (10) according to one of the preceding claims, characterized bythat the motor vehicle interior trim part (10) comprises one or more activation means for controlling the shape memory material by means of a pulse, wherein the pulse is effected by means of light and / or electromagnetic waves and / or electricity and / or temperature and / or force and / or acoustics and / or sensors. [10] Motor vehicle interior trim part (10) according to one of the preceding claims, characterized by that the shape memory material (15) is provided for realizing a deformation function and / or a lighting function and / or an acoustic function and / or a haptic effect and / or a heating function. [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 an electrical or electronic control for the shape memory material (15). [12] Motor vehicle interior trim part (10) according to one of the preceding claims, characterized bythat the motor vehicle interior trim part (10) comprises one or more light elements (19) and / or one or more sensor elements and / or one or more heating elements.

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