DE102017115304A1 - Molded part, in particular formed as a molded part decorative part and / or trim part for a vehicle interior, and method for producing such a molded part - Google Patents

Abstract

The invention relates to a molded part (10), in particular a formed as a molded part (10) decorative part and / or trim part for a vehicle interior, comprising a decorative layer (11) with at least one recess (12), one on the back of the decorative layer (11) arranged opaque layer (14) and one at the back of the opaque layer (14) arranged, in particular molded, at least partially transparent or translucent or light scattering carrier (15), wherein the at least one recess through the decorative layer (11) and through the opaque layer (14) extends through and at least partially filled with a transparent or translucent filler (13). The filler material (13) is color matched to the decorative layer (11). Alternatively or additionally, at least in the region of the at least one recess (12), a in particular translucent protective layer (16a) is provided on the front side of the decorative layer (11), which color is matched to the decorative layer (11).
The invention further relates to a method for producing such a molded part.

Description

The invention relates to a molded part, in particular a formed as a molded part decorative part and / or trim part for a vehicle interior, and a method for producing such a molded part.

Moldings for the vehicle interior are known per se. In particular, molded parts with integrated design elements are known. However, the demands placed on such moldings are always increasing. In particular, lighting effects for clarification or display of symbols or other designs on the molding surface are desired in order to make them recognizable, in particular in poor or poor lighting conditions, or to visually enhance the molding and thus the vehicle interior.

Furthermore, the requirement is placed on such moldings that under good lighting conditions, no changes or peculiarities on the surface of the molded part required for the lighting effects can be recognized. In this case, the viewer should not be able to recognize any design features made visible by the light effect when the light effect is switched off.

The invention is based on the object to provide a new molding in which the design features that are required for the representation of symbols or other design elements with the help of light, in the unlit state as far as possible in the background, that is, the components provided for this purpose for a viewer in the unlit state not or at least barely recognizable or identifiable.

It is another object of the invention to provide a novel process for producing such a molded part.

This object is achieved with regard to the molded part by the features of claim 1 and with respect to the method by the features of claim 12. Advantageous embodiments and further developments are specified in the respective dependent claims.

A molded part, in particular a decorative part and / or trim part designed for a vehicle interior, comprises a decorative layer with at least one recess, an opaque layer arranged on the rear side of the decorative layer and a transparent, at least partially transparent element, which is arranged on the back of the opaque layer or translucent or light scattering support, wherein the at least one recess extends through the decorative layer and through the opaque layer. The at least one recess is at least partially filled with a transparent or translucent filler, wherein the filler is color matched to the decorative layer. As an alternative or in addition to this filling material, a particularly translucent protective layer is provided on the front side of the decorative layer, at least in the area of the at least one recess, which is color matched to the decorative layer.

Since the filling material is color matched to the decorative layer or a translucent protective layer is provided, which is color matched to the decorative layer, the at least one recess optically enters the background, if the form or decorative part is not backed by a light source behind it is illuminated. In the case of background or fluoroscopy of the decorative part, on the other hand, the contours of the at least one recess visually come to the fore.

The recess may have a line-shaped, partially straight or curved contour on the visible side, and in particular form a design element which clearly becomes apparent only when the decorative layer is backlit, because light emerges from the recess. Preferably, a plurality of decorative elements are formed by a plurality of recesses, which form, for example, a pattern. Thus, in particular a plurality of mutually parallel, at least partially parallel, linear recesses may be provided in the decorative layer.

The recesses may in particular be both point-like and line-like recesses. Line-like recesses may be curved, curved and / or extend straight in the flat decorative layer or decorative layer. For example, a plurality of mutually parallel and preferably evenly spaced apart recessed lines may be provided.

The advantages of the invention are, in particular, that versatile design variants can be displayed on the molded part surface when the light source is switched on (night design). In addition, the recesses in the decorative layer and in the opaque layer or opaque printing layer may be formed so that the made visible by the backlight design elements or design features with the light source off on the visible surface of the molding are not visible (tag design).

The arrangement and shape of the recesses in the decorative layer of diverse symbols and designs can be displayed.

In other embodiments, the at least one recess on the visible side has a contour which corresponds at least to a part of a symbol to be displayed. For example, the symbol can be used to represent an operating parameter, an operating parameter, a warning and / or a vehicle function of the motor vehicle. For representing the symbolism, a plurality of light-guiding recesses may also be incorporated in the decorative layer.

Preferably, a plurality of light-guiding recesses are introduced into the decorative layer. The recesses may be formed in particular for the representation of symbols by punctiform microperforations. In other embodiments, the recesses are formed by cuts or cutouts. In the latter two cases, the viewing angle under which the recesses are visible is typically somewhat larger. This can be counteracted by introducing a color matched to the decorative layer filling material in the recesses and the decorative layer is coated with a corresponding color-matched protective layer.

The protective layer is formed, for example, by a lacquer layer of PMMA and / or polyurethane and / or polyurea and / or polyaspartics and / or polyester or comprises one or more of these materials. The protective layer is dyed and / or provided with color particles, in particular in cases in which the filling material introduced into the at least one recess is not adapted to the coloring of the decorative layer. Alternatively or additionally, the protective or lacquer layer may be formed shiny or frosted on its front side facing away from the decorative layer, wherein, for example, a matt lacquer is provided.

In a preferred embodiment, the filling material introduced into the at least one recess comprises glass spheres, in particular hollow glass spheres. Such fillers are used in particular to increase the light scattering and thus cause a diffuse light emission.

The filler preferably comprises light-scattering pigments or light-scattering fillers.

The filling material consists for example of plastic, in particular of a thermosetting or thermoplastic plastic, which is integrally introduced into the at least one recess. The at least one recess can for example be completely filled with such a filler material. The cohesive connection between filling material and decorative layer is preferably formed during curing of the plastic.

Particularly preferably, the filler material is the same material from which the carrier is formed. Manufacturing technology can thus be done filling the provided in the decorative layer recess or the recesses in the back of the decorative layer with plastic. Accordingly, in this injection molding step, a support of plastic material carrying the decorative layer is formed parallel to the filling of the recesses.

The opaque layer is preferably formed by a printing layer, in particular by a screen printing layer, or by an opaque film or by an adhesive layer, for example an adhesive film, or by laminating material, for example nonwoven or film or paper. The translucent layer serves, in particular, to concentrate the light exit in the case of background or fluoroscopy of the decorative part onto the region of the recess or the recesses or, ideally, to restrict it to this area. In this way it is achieved that the contours of the recess or the recesses clearly visible on the visible side in case of backlighting or fluoroscopy.

Particularly preferred is a light source, in particular light-emitting diode, which is provided for direct and / or indirect back lighting and illumination of the decorative layer, integrated in the region of the at least one recess in the material of the carrier or arranged in a recess in the carrier or on a back side of the carrier. According to a variant of the invention, the light source is integrated in a region of the at least partially transparent or translucent or light-scattering carrier facing the decorative layer or arranged there in a recess in the carrier. According to another variant of the invention, the light source is integrated in a region remote from the decorative layer of the at least partially transparent or translucent or light-scattering carrier or at this point in a recess in the carrier.

Particularly preferred is a sensor element, in particular a pressure-sensitive and / or optical and / or capacitive sensor element, arranged in the region of the at least one recess on the carrier or integrated in the material of the carrier. In this context, the at least one cutout preferably has a contour which on the visible side forms at least part of a symbol, in particular of a symbol for representing an operating parameter, an operating parameter, a warning and / or a vehicle function of the vehicle Motor vehicle, forms. The sensor element is designed to deliver a signal in response to a user activation, in particular to pressure or approximation. In this way, the sensor element forms an integrated into the decorative part switch element, which is visible only when backlight and fluoroscopy of the decorative part.

Preferably, the sensor element is designed as a proximity switch. In this case, a user-side activation of the sensor element can already take place in that the user touches the decorative part for example with his finger slightly on the front side or on the visible side in the region of the at least one recess or in the region of the sensor element without exerting pressure. In other cases, the user-side activation of the sensor element can be done without contact. With the activation of the sensor element, activation of a vehicle function is preferably linked.

The sensor element is preferably designed to output a haptic signal, in particular as feedback in the case of user-side activation of the sensor element. In this respect, the user immediately receives feedback about the activation of the associated vehicle function.

Particularly preferably, the decorative layer comprises a wood veneer.

In a method for producing the molding according to the invention described above, a decorative layer and an opaque layer attached to the back of the decorative layer are provided with at least one recess extending through the decorative layer and the opaque layer. A transparent or translucent filling material is introduced into the at least recess, wherein the filling material is color matched to the decorative layer. As an alternative or in addition to this introduction of the filling material, a particularly translucent protective layer is applied to the front side of the decorative layer at least in the region of the at least one recess, which is color matched to the decorative layer.

A molded or decorative part produced in this way is characterized by the optical design possibilities already described. In particular, design elements or symbols which are not or hardly recognizable under normal illumination can be made visible by light effects. For this purpose, the areas of the recess or the recesses are used for light emission when the molded part is illuminated or illuminated from behind.

Preferably, a portion of the carrier is formed by the decorative layer with the light-impermeable layer arranged thereon being at least partially back-injected by means of injection molding with a transparent or translucent plastic.

In this method step, the recesses provided are particularly preferably also filled with the transparent or translucent material of the carrier. The carrier is used in particular for stabilizing the decorative layer.

When injecting the decorative layer, a light source or a sensor element is particularly preferably integrated in the region of the at least one recess in the material of the carrier. In this way, in particular, the already described switching element can be integrated into the mold or decorative part, which is clearly visible only when backlighting or fluoroscopy.

• 1 in einer schematischen Querschnittsdarstellung ein erstes Ausführungsbeispiel eines erfindungsgemäßen Formteils,
• 2 in einer schematischen Querschnittsdarstellung ein zweites Ausführungsbeispiel eines erfindungsgemäßen Formteils,
• 3 in einer schematischen Querschnittsdarstellung ein drittes Ausführungsbeispiel eines erfindungsgemäßen Formteils,
• 4 in einer schematischen Querschnittsdarstellung ein viertes Ausführungsbeispiel eines erfindungsgemäßen Formteils,
• 5 in einer schematischen Querschnittsdarstellung ein fünftes Ausführungsbeispiel eines erfindungsgemäßen Formteils,
• 6 in einer schematischen Querschnittsdarstellung ein sechstes Ausführungsbeispiel eines erfindungsgemäßen Formteils,

The invention will be explained in more detail below with regard to further features and advantages with reference to the description of embodiments and with reference to the accompanying schematic drawings. Show

• 1 in a schematic cross-sectional representation of a first embodiment of a molded part according to the invention,
• 2 in a schematic cross-sectional representation of a second embodiment of a molded part according to the invention,
• 3 in a schematic cross-sectional representation of a third embodiment of a molded part according to the invention,
• 4 in a schematic cross-sectional representation of a fourth embodiment of a molded part according to the invention,
• 5 in a schematic cross-sectional representation of a fifth embodiment of a molded part according to the invention,
• 6 in a schematic cross-sectional representation of a sixth embodiment of a molded part according to the invention,

Corresponding parts and components are each denoted by the same reference numerals.

1 shows as a molding 10 trained decor part and / or trim part for a vehicle interior. The molding 10 includes a decorative layer 11 comprising, for example, a wood veneer into which at least one recess 12 is introduced. In the recess 12 is filling material 13 provided, which consists in the illustrated first embodiment of transparent glass balls, in particular glass hollow spheres. For improvement The light scattering can alternatively or additionally further fillers or color pigments in the recess 12 or in the filler 13 be embedded.

At the back of the decorative layer 11 is an opaque layer 14 , For example, a printing layer or a film arranged over which a carrier 15 in particular cohesively connected. The carrier 15 consists of a plastic, in particular a thermoplastic or thermosetting plastic and can in particular by injection molding of the decorative layer 11 be formed. The recess 13 extends through both the decorative layer 11 as well as through the opaque layer 14 therethrough.

The filling material 13 of the first embodiment is transparent. The entire molding 10 is visible, so on the carrier 15 opposite side of the molding 10 , with a protective layer 16a coated, which consists of a colored translucent lacquer to the introduced recess 13 to conceal. For this purpose, the protective layer 16a a coloring, which is essentially that of the decorative layer 11 corresponds and thus, for example, in the case of a wood veneer having decorative layer has a kind of "wood look".

In the production of the molding 10 First, the decorative layer 11 with opaque layer 14 and recesses 12 provided. In a preferred variant, the introduction of the provided recesses takes place 12 by laser ablation. Subsequently, the training of the carrier 15 who is the decor layer 11 back stabilized for stabilization, in an injection molding step. Then the at least one recess 12 , preferably all existing recesses 12 with filling material 13 filled and the front of the decorative layer 11 painted, with the protective layer 16a is formed.

2 shows a second embodiment in which in the recess 12 of the molding 10 introduced filling material 13 in terms of its visual appearance in particular color to the decorative layer 11 is adjusted. In the second embodiment, these are correspondingly colored glass spheres, in particular colored hollow glass spheres. To improve the light scattering, alternatively or additionally, further fillers or color pigments may enter the recess 12 or in the filler 13 be embedded.

In this way it is achieved that the contours of the recess 12 in accordance with low light conditions, especially when the decorative layer 11 is not artificially backlit or durchluchtet, step into the background. In the second embodiment is a color neutral and transparent protective layer 16b on the visible side on the decorative layer 11 applied, which consists for example of clearcoat.

With regard to the production, the second embodiment substantially corresponds to the first embodiment, so that reference is made to the relevant embodiments.

3 shows a third embodiment of the molding according to the invention 10 in which the in the recess 12 introduced filling material 13 is a translucent plastic, its color on the decorative layer 11 is tuned and thus in the case of a wood veneer having decorative layer, for example, a kind of "wood look" has. The filling material 13 is in this variant of the molding according to the invention 10 with the material from which the carrier 15 is formed, identical.

The introduction of the filling material 13 in the recess 12 takes place during the production of the molding 10 according to the third embodiment during injection molding of the carrier 15 , In other words, first a decorative layer 11 comprising, for example, a wood veneer with a back-mounted, opaque and in particular opaque layer 14 provided. In the decorative layer 11 and in the opaque layer 14 If necessary, several recesses 12 For example, introduced by laser ablation. Subsequently, the decorative layer 11 and opaque layer 14 existing component with colored plastic injected in an injection mold, wherein the carrier 15 is formed. It penetrates the material from which the carrier 15 is formed in the existing recesses 12 one. Because the filler material 13 colored to the decorative layer 11 adjusted, the recesses occur 13 in the visual appearance of the molding 10 especially with natural lighting in the background. Subsequently, if necessary, the front of the molding 10 provided with a varnish layer which is the protective layer 16b forms.

4 to 6 show further embodiments, in which in the region of each recess exemplified 12 a light source 17 and a sensor element 18 are arranged. The light source 17 and the sensor element 18 form in the non-limiting embodiments a part of a user-side activatable control element for controlling a function, in particular a comfort function of a motor vehicle.

The user-side activation of the corresponding function can according to alternative embodiments to pressure or already approaching the sensor element 18 respectively. Accordingly, the sensor element 18 pressure-sensitive, in particular as an inductive sensor element 18 or designed as an optical or inductive proximity switch or sensor. In particular, combinations are inductive, optical and / or pressure-sensitive sensor elements 18 intended. For example, it can be implemented that activation of the light source 17 when approaching one of the provided sensor elements 18 takes place and thus the molding 10 in the area of the recess 12 through or backlit.

When the background or fluoroscopy is activated, they are the ones on the molded part 10 On the visible side contours of the illuminated recess 12 or the illuminated recesses 12 clearly off. In the in 4 to 6 form the provided recesses 12 Contours that serve the symbolic representation of the function, which is linked to the activation of the respective associated control element.

In other embodiments, the recesses form 12 Design elements that only with backlighting, so with activated light source 17 clearly appear.

Optionally, the operating elements or sensor elements are designed to output a haptic signal, in particular to confirm a user-side activation.

The light sources 17 are designed as light-emitting diodes or as light guides. At the sensor elements 18 In the illustrated and non-restrictive exemplary embodiments, these are sensory conductor tracks.

The light sources 18 and the sensor elements 18 are in the material of the carrier 15 integrated.

The integration of the light sources 17 , the sensor elements 18 and the optionally required conductor tracks can be carried out in the production in the injection molding step already described, through which the carrier 15 is formed. For this purpose, in particular those in the carrier 15 to be integrated components are inserted into the injection mold and coated with plastic.

Alternatively, the light sources 17 , Sensor elements 18 and possibly required printed conductors even after the injection molding step in a separate step in or on the carrier 15 to be assembled.

In particular with regard to the specific arrangement of the light sources 17 or sensor elements 18 in the area of the recess 12 demonstrate 4 to 6 in non-conclusive ways possible variants. The light source 17 and / or the sensor element 18 are for example in a front or in a rear area of the carrier 15 embedded. At least in the area of the recesses 12 is the carrier 15 formed from a transparent or translucent plastic.

LIST OF REFERENCE NUMBERS

10

molding

11

decorative layer

12

recess

13

filling material

14

Opaque layer

15

carrier

16a

protective layer

16b

protective layer

17

light source

18

sensor element

Claims (15)

Molded part (10), in particular as a molded part (10) formed decorative part and / or trim part for a vehicle interior, comprising a decorative layer (11) with at least one recess (12), arranged on the back of the decorative layer (11) opaque layer (14) and an at least partially transparent or translucent or light-scattering support (15) arranged at the rear side of the light-impermeable layer (14), wherein the at least one recess extends through the decorative layer (11) and through the opaque layer (14) and at least partially filled with a transparent or translucent filling material (13), wherein the filler material (13) is color matched to the decorative layer (11) and / or at the front of the decorative layer (11) at least in the region of the at least one recess (12) one in particular translucent protective layer (16a) is provided, which color abge on the decorative layer (11) is true. Molding (10) after Claim 1 wherein the filler material (13) comprises glass beads. Molding (10) after Claim 1 or 2 wherein the filler comprises light diffusing pigments or light scattering fillers. Molding (10) according to any one of the preceding claims, wherein the filler material (13) consists of plastic, which is materially introduced into the at least one recess (12). Molding (10) according to the preceding claims, wherein the filling material (13) is the same material from which the carrier (15) is formed. A molding (10) according to any one of the preceding claims, wherein the opaque layer (14) is formed by a printing layer or by an opaque film or by an adhesive layer or by a laminating material. Molded part (10) according to one of the preceding claims, wherein at least one light source (17) is provided for direct and / or indirect backlighting and transillumination of the decorative layer (11), which in the region of the at least one recess (12) in the material of the support ( 15) is integrated or arranged in a recess in the carrier (15) or on a rear side of the carrier (15). Molded part (10) according to one of the preceding claims, wherein a sensor element (18) in the region of the at least one recess (12) arranged on the carrier (15) or in the material of the carrier (15) is integrated. Molding (10) after Claim 8 , wherein the sensor element (18) is designed as a proximity switch. Molding (10) after Claim 8 or 9 , wherein the sensor element (18) is designed to output a haptic signal. Molding (10) according to one of the preceding claims, wherein the decorative layer (11) comprises a wood veneer. Method for producing a molded part (10) according to one of the preceding claims, wherein a decorative layer (11) and an opaque layer (14) attached to the back of the decorative layer (11) have at least one cutout (12) extending through the decorative layer (12). 11) and the opaque layer (14), is provided, and a transparent or translucent filler material (13) is introduced into the at least recess (12), wherein the filler material (13) is color matched to the decorative layer (11) and / / or at the front of the decorative layer (11) at least in the region of the at least one recess (12) a protective layer (16a) is applied, which is color matched to the decorative layer (11). Method according to Claim 12 , wherein at least a portion of the carrier (15) is formed by that the decorative layer (11) arranged thereon with opaque layer (14) is at least partially back-injected by injection molding with a transparent or translucent plastic. Method according to Claim 13 , Wherein the decorative layer (11), a light source (17) or a sensor element (18) in the region of the at least one recess in the material of the carrier (15) is integrated. Method according to one of Claims 13 or 14 wherein the at least one recess in the back molding of the decorative layer (11) is at least partially filled with the same material as the carrier (15).

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