Molded part and method for producing a molded part

Abstract

The invention relates to a molded part and a method of manufacturing a molded part. The molded part (10) comprises: a decorative layer (11) having a front side (12) and a rear side (13); a light guide element (15) comprising a body (16) and one or more light conductors (19) protruding on a front face (17) of the body, where the front face of the body is arranged at the back face of the decorative layer and the light conductors completely penetrate the decorative layer; and one or more light elements (21) arranged in and / or at the light guide element, light emitted from the light elements being guided to the front face of the decorative layer via the light conductor. A light-shielding layer (22), in particular a light-shielding element, is arranged between the surface (20) of the light conductor and the decorative layer, the light-shielding layer having an interruption (23) at each light conductor on the front side of the decorative layer, through which light can escape. The method step of manufacturing the molded part comprises pressing the light conductor of the light-shielding element and / or the light-guiding element into the decorative material (11a) to form the decorative layer.

Description

[0001] The invention relates to a molded part and a method for producing such a molded part. In particular, the molded part is a decorative part (also called trim part) and / or interior trim part for a vehicle interior, which is designed as a molded part.

[0002] A large number of decorative and interior parts (eg, door trims, consoles, and instrument panels) are installed in the interior space of a vehicle. The decorative and interior parts also include operating buttons or their cover parts.

[0003] Such a molded part comprises a decorative layer having a front side configured as a visible side and a rear side opposite the front side.

[0004] In order to display backlit or illuminated functional symbols on the front side of the decorative layer, it is known from DE 20 2018 101 500 U1 to introduce light channels into the decorative layer. Light conductor inserts made of light-conducting material are inserted into these light channels. The light channels are illuminated by light elements.

[0005] A disadvantage of this known solution is that when the light channel is illuminated, light enters the decorative layer, so that on the front side of the decorative layer, the area around the light channel is also illuminated. This reduces the edge definition of the illuminated area on the front side, making the symbol to be displayed appear unclear.

[0006] The object of the present invention is to provide a new moulding and a new method for producing a moulding, in particular a moulding and a method which at least partially eliminate the above-mentioned disadvantages.

[0007] This object is achieved with respect to the molded part by the features of claim 1 and with respect to the method by the features of claim 9 and the features of claim 13. Advantageous embodiments and developments are specified in the respective dependent claims.

[0008] The molded part according to the present invention comprises: a decorative layer having a front side configured as a visible surface and a back side opposite to the front side; a light-guiding element; and one or more light elements arranged in and / or at the light-guiding element, wherein light emitted from the light element is guided to the front side of the decorative layer via one or more light conductors of the light-guiding element.

[0009] The light guide element comprises a main body and one or more light conductors protruding from the main body on the front side of the main body. The front side of the main body is arranged at the back side of the decorative layer, and the one or more light conductors completely penetrate the decorative layer from the back side to the front side.

[0010] The present invention proposes that a shading layer is arranged between the surface of one or more optical waveguides and a decorative layer, wherein the shading layer has an interruption at each optical waveguide on the front side of the decorative layer, and light guided from one or more optical waveguides to the front side of the decorative layer can escape through the interruption at the front side of the decorative layer.

[0011] In particular, the molded part is a decorative part (also called: trim part) and / or interior trim part for the vehicle interior, which is designed as a molded part.

[0012] The body of the light-guiding element and / or one or more light conductors can be made of a transparent or translucent material (in particular a transparent or translucent plastic), or can include a transparent or translucent material (in particular a transparent or translucent plastic). The body and the one or more light conductors can be manufactured separately or together, for example, by means of an injection molding process or a casting process.

[0013] The light-guiding element, in particular one or more light conductors of the light-guiding element, can extend right up to one or more interruptions in the light-shielding layer, in particular forming a flat surface together with the material of the decorative layer on the front side of the decorative layer. However, the light-guiding element, in particular one or more light conductors of the light-guiding element, can also pass through one or more interruptions in the light-shielding layer and protrude above the material of the decorative layer. Furthermore, the light-shielding element and the light-guiding element, in particular one or more light conductors of the light-guiding element, can protrude above the material of the decorative layer on the front side of the decorative layer.

[0014] The body of the light-conducting element can form a carrier for the molding. In this case, an additional carrier is omitted. However, a separate carrier can also be arranged on the back side of the body opposite the front side of the body. Furthermore, the carrier can also be used to mount the molding on other objects, for example on other objects in the interior of a vehicle. For this purpose, the carrier can have attachment elements for mounting.

[0015] The light-shielding layer is a layer that prevents light from penetrating the layer. Therefore, in particular, the light-shielding layer is light-impermeable.

[0016] The light shielding layer prevents light from one or more light conductors of the light-conducting element from entering the decorative layer and from there reaching the front side of the decorative layer. This ensures that light from the one or more light conductors can only escape in one or more interruptions at the front side of the decorative layer, so that the light can escape at sharp edges.

[0017] The light-shielding layer can be a light-shielding adhesive layer or a hard coating, particularly a hard coating of a lacquer surface. It can be provided here that before the light conductor is introduced into the decorative layer, the adhesive layer or the hard coating has been coated on the light conductor or is applied to the light conductor.

[0018] However, the shading layer can also be a shading element, in particular a self-supporting and / or independent dimensionally stable shading element. In this case, one or more light conductors and / or light guide elements can be sprayed onto the shading element, in particular by injection molding. Alternatively, bonding is also possible, in which case the light conductors and / or light guide elements are prefabricated.

[0019] The diaphragm element can be a one-piece element for all light conductors. However, the diaphragm element can also be a plurality of components which are initially separate during the production process and which are only connected to one another via the light-conducting element in the finished molded part.

[0020] A further development provides that the diaphragm element has one or more tips, in particular sharp edges, on the side facing away from the body of the light-conducting element. The one or more tips are particularly designed to be pressed into the solid material of the decorative layer during the production of the molded part and thus form one or more continuous recesses (also called through-holes) through the decorative layer for one or more light conductors.

[0021] According to the design of the molded part of the present invention, it is provided that the shading layer, in particular the shading element, comprises or is made of metal and / or light-proof plastic. For example, the plastic can be a coated plastic.

[0022] The shading layer can be designed to reflect (reflektierend) or specularly reflect (verspiegelt) toward one or more light conductors. If the shading layer is a shading element, the shading element can be provided with a reflective or specularly reflective coating, for example. Through these designs, little or no light is lost due to absorption and / or scattering in the decorative material, and the light is guided through the one or more light conductors at least almost without loss.

[0023] The extended solution provides that the decorative layer is made of a decorative material or includes a decorative material, and the shading layer, in particular the shading element, is made of a first material, and the light-conducting element is made of a second material or includes a second material, wherein the first material and / or the second material has a greater hardness and / or strength than the decorative material of the decorative layer. In one embodiment, the first material can also have a greater hardness and / or strength than the second material. Therefore, in particular, the shading layer (in particular the shading element) is a reinforcement layer for one or more light conductors of the light-conducting element.

[0024] According to one design, one or more optical conductors and / or light shielding layers (particularly light shielding elements) of the light guide element have a shape that tapers toward the front side of the decorative layer, particularly a conical or funnel-shaped shape, at least in sections. Therefore, the light passage area of ​​the optical conductor located at the front side of the decorative layer is smaller than the light incident area of ​​the optical conductor located at the back side of the decorative layer.

[0025] For example, the decorative layer can comprise or consist of a wood layer, in particular a laminated wood layer, to the back of which, for example, a nonwoven is laminated. The decorative layer can also comprise or consist of plastic and / or film and / or paper and / or fabric and / or textile and / or cloth and / or leather and / or artificial leather and / or nonwoven and / or carbon and / or stone and / or slate and / or marble and / or metal (for example, aluminum and / or stainless steel).

[0026] It can be provided that a transparent or translucent protective layer and / or appearance layer is arranged on the front side of the decorative layer, wherein the protective layer and / or appearance layer comprises, for example, lacquer or polyurethane (PUR) or plastic, or is made of lacquer or polyurethane (PUR) or plastic. In order to arrange the protective layer and / or appearance layer made of PUR or plastic on the front side of the decorative layer, the PUR or plastic is, for example, cast onto the front side.

[0027] One or more light elements arranged in and / or at the light-guiding element may be a light source (e.g., an LED) or an element comprising a light source. However, one or more light elements may also be or comprise a light exit point of a light conductor, to which light from a distant light source is guided by the light conductor. For example, the light element may be integrated and / or embedded in the light-guiding element, in particular in the body of the light-guiding element, or may be bonded to the light-guiding element, in particular in the body of the light-guiding element, and / or introduced into a recess in the light-guiding element, in particular in the body of the light-guiding element.

[0028] In particular, the light elements are arranged in or at the light guide element so that light emitted from one or more light elements is guided to the front side of the decorative layer via one or more light conductors of the light guide element. For example, the light elements can be arranged in the body of the light guide element and / or at the back side of the body of the light guide element and / or at the side of the body of the light guide element. The arrangement can be carried out in such a way that one light element is assigned to each light conductor. In particular, the arrangement can be carried out in such a way that the light channel through each light conductor of the light guide element is separated, in particular independently of the light channel through the other light conductors, so that the light channel through each light conductor can be controlled separately.

[0029] On the front side of the decorative layer, the light can be used to display indications and / or symbols and / or designs and / or provide illumination.

[0030] A first method according to the invention for producing a molded part relates to a molded part, which comprises: a decorative layer having a front side configured as a visible surface and a back side opposite to the front side; a light guide element; and one or more light elements arranged in and / or at the light guide element. The light guide element of the molded part comprises a body and one or more light conductors protruding from the body on the front side of the body, wherein the front side of the body is arranged at the back side of the decorative layer, and the one or more light conductors completely penetrate the decorative layer from the back side to the front side. Light emitted from one or more light elements is guided to the front side of the decorative layer by the one or more light conductors of the light guide element. In the molded part, a light shielding layer is arranged between the surface of the one or more light conductors and the decorative layer, wherein the light shielding layer has an interruption at each light conductor on the front side of the decorative layer, so that light guided from one or more light conductors to the front side of the decorative layer can escape from the front side of the decorative layer. The light shielding layer of the molded part is a self-supporting and / or independent shape-stable light shielding element. In particular, the molded part to be produced is the molded part according to the invention described above in terms of other features.

[0031] A first method according to the present invention comprises the following steps:

[0032] a) providing a decorative material to form a decorative layer, wherein a front side of the decorative material is used to form a front side of the decorative layer, and a back side of the decorative material is used to form a back side of the decorative layer,

[0033] b) providing a light-guiding element comprising a body and one or more light conductors protruding at a front side of the body,

[0034] c) providing a self-supporting and / or independent dimensionally stable shading element having a front side and a rear side, wherein one or more free spaces are formed at the rear side for accommodating one or more light conductors of the light-guiding element,

[0035] d) placing the decorative material and the shading element into a pressing tool, wherein the front side of the shading element faces the back side of the decorative material,

[0036] e) Pressing the shading element into the decorative material such that the shading element completely penetrates the decorative material from the back side to the front side after pressing, and defines one or more through recesses formed in the decorative material by pressing into the decorative material.

[0037] In particular, a self-supporting and / or independent dimensionally stable shading element is to be understood as an element which can be present and processed even without further layers or elements attached thereto (eg light-conducting elements).

[0038] The advantage of the pressing-in provided in the first method according to the invention is that it is not necessary to introduce through-holes into the decorative material beforehand, thus eliminating the associated process steps.

[0039] In a first embodiment of the first method according to the invention, it is provided that before the shading element is placed in the pressing tool according to step d), a light guide element is attached to the back side of the shading element. The attachment is carried out in such a way that one or more light conductors of the light guide element are introduced into one or more free spaces on the back side of the shading element and these free spaces are completely filled, so that according to step e), the shading element with the light guide element attached to the back side of the shading element is pressed into the decorative material. In particular, the shading element thus acts as a reinforcement layer for the one or more light conductors of the light guide element during the pressing process.

[0040] In a second alternative embodiment of the first method according to the invention, it is provided that after the shading element has been pressed into the decorative material according to step e), a light guide element is attached to the back side of the shading element. The attachment is carried out in such a way that one or more light conductors of the light guide element are introduced into one or more free spaces on the back side of the shading element and completely fill these free spaces.

[0041] According to a development of the first method according to the invention, it is provided that the diaphragm element provided according to step c) is produced by means of an injection molding process and / or a casting process and / or a forming process and / or a stamping process.

[0042] For example, the shading element may comprise or be made of metal and / or light-proof plastic. For example, the plastic may be a coated plastic.

[0043] A second method according to the invention for producing a molded part relates to a molded part comprising: a decorative layer having a front side configured as a visible surface and a back side opposite the front side; a light-guiding element; and one or more light elements arranged in and / or at the light-guiding element. The light-guiding element of the molded part comprises a main body and one or more light conductors protruding from the main body at the front side of the main body, wherein the front side of the main body is arranged at the back side of the decorative layer, and the one or more light conductors completely penetrate the decorative layer from the back side to the front side. Light emitted from the one or more light elements is guided to the front side of the decorative layer by the one or more light conductors of the light-guiding element. In particular, the molded part to be produced is the above-described molded part according to the invention.

[0044] The second method according to the present invention comprises the following steps:

[0045] a) providing a decorative material to form a decorative layer, wherein a front side of the decorative material is used to form a front side of the decorative layer, and a back side of the decorative material is used to form a back side of the decorative layer,

[0046] b) providing a light-guiding element comprising a body and one or more light conductors protruding at a front side of the body,

[0047] c) placing the decorative material and the light guide element into a pressing tool, wherein the front side of the main body of the light guide element faces the back side of the decorative material,

[0048] d) Pressing one or more light conductors of the light-conducting element into the decorative material, so that the one or more light conductors completely penetrate the decorative material after pressing.

[0049] The advantage of the pressing-in provided in the second method according to the invention is that it is not necessary to introduce through-holes into the decorative material beforehand, thus eliminating the associated process steps.

[0050] According to an embodiment of the second method of the invention, a light shielding layer is arranged on the surface of one or more light conductors of the light-conducting element provided according to step b) before providing according to step b) or before placing in the pressing tool according to step c), wherein the light shielding layer of each light conductor has interruptions through which light from the one or more light conductors can escape. The arrangement of the light shielding layer on the surface of the one or more light conductors can be achieved, for example, by coating or by gluing.

[0051] The light-shielding layer can be a light-shielding adhesive layer or a hard coating, in particular a hard coating of a lacquer surface. It can be provided here that before the light conductor is introduced into the decorative layer, the adhesive layer or the hard coating has been coated on the light conductor or is applied to the light conductor.

[0052] The shading layer may also be a shading element. The shading element may have a tip with one or more sharp edges on a side facing away from the main body of the light-guiding element. The shading element may include or be made of metal and / or opaque plastic.

[0053] The light shielding layer can be designed to reflect or specularly reflect toward one or more optical waveguides. In the case of being designed as a light shielding element, the light shielding element can be provided with a reflective or specularly reflective coating.

[0054] In all the above methods according to the invention, the pressing can be performed by placing an insert into a pressing tool at the front side of the decorative material. The insert can be a material that is softer than the material of the shading element and / or the material of the light-guiding element. For example, the insert can be cardboard or foam or a non-woven fabric. In this way, by pressing these materials into the insert, the shading element and / or the light-guiding element can protrude beyond the front side of the decorative material during the pressing process. The same applies to the material that is displaced during the pressing process. After pressing, the insert can be removed from the front side of the decorative material, in particular peeled off. During the pressing process, the protrusion can support the shading element and / or the light-guiding element to completely penetrate the decorative material from the back side of the decorative material to the front side.

[0055] According to the design of the method of the present invention, the front side of the decorative material is polished and / or brushed off after pressing in. The polishing and / or brushing process removes projections of the shading element and / or the light guide element and / or decorative material squeezed out during the pressing in process.

[0056] In all methods according to the invention, the decorative material provided may consist of one or more decorative layers. For example, the decorative material may comprise or consist of a wooden plywood, in particular a laminated wooden plywood, with a nonwoven fabric laminated on the back, for example. The decorative material may also comprise or consist of plastic and / or film and / or paper and / or fabric and / or textile and / or cloth and / or leather and / or artificial leather and / or nonwoven and / or carbon and / or stone and / or slate and / or marble and / or metal (for example, aluminum and / or stainless steel).

[0057] Before and / or after the pressing in, the decorative material can be processed and thus designed by surface treatment, for example by a coloring process and / or by using a scrubber and / or by a sanding process and / or by a polishing process and / or by an etching process.

[0058] A further development provides that the shading layer, in particular the shading element, is made of a first material and the light-conducting element is made of a second material, wherein the first material and / or the second material has a greater hardness and / or strength than one or more decorative layers of the decorative material. Furthermore, it can be provided that the first material has a greater hardness and / or strength than the second material. In particular, the shading layer, in particular the shading element, is in this case a reinforcement layer for one or more light conductors of the light-conducting element.

[0059] According to the design of the method of the invention, before being placed in the pressing tool, the provided decorative material is provided with an adhesive layer on its back side, in particular by lamination. After the light guide element is introduced, the front side of the body of the light guide element adheres to the adhesive layer, so that the light guide element adheres to the decorative material.

[0060] According to an embodiment of the method according to the invention, one or more optical waveguides and / or light shielding layers, in particular light shielding elements, of the light guide element have a tapering shape, in particular a conical or funnel-shaped shape, at least in sections. If the light shielding layer is a light shielding element, it can be provided that the light shielding element has one or more tips, in particular sharp edges, which are designed in particular to be pressed into the decorative material during the production process of the molded part and thus produce one or more through-holes for the one or more optical waveguides of the light guide element through the decorative material. The above measures support the pressing in.

[0061] According to the design of the method of the present invention, the provided light-guiding element is manufactured in one piece, wherein one or more light elements are arranged in and / or at the one-piece light-guiding element, in particular in and / or at the body of the light-guiding element. The body of the light-guiding element and one or more light conductors can be manufactured together in one manufacturing step. For example, the light-guiding element manufactured in one piece including the body and the light conductor can be manufactured by means of an injection molding process or a casting process. One or more light elements can be embedded during injection molding or casting or subsequently bonded and / or inserted into a recess in the body.

[0062] According to an alternative embodiment of the method according to the invention, the body of the light-conducting element to be provided and the one or more optical conductors are manufactured separately and then connected to one another, in particular by means of bonding, wherein the one or more optical elements are arranged in and / or on the body. For example, both the body and the one or more optical conductors can be manufactured by means of an injection molding process or a casting process. Here, the one or more optical elements can be embedded in the body during injection molding or casting, or can be subsequently bonded to the body and / or inserted into a recess in the body, wherein the bonding and / or insertion takes place before or after or simultaneously with the connection of the body to the one or more optical conductors.

[0063] In all designs, the light-guiding element with the light element has the following advantages: an integrated light system with the light element can be provided, the light element being embedded or arranged in a body of a desired shape, thereby simplifying the production.

[0064] According to an embodiment of the method according to the invention, the carrier is attached to the rear side of the body of the light-conducting element, opposite the front side. In particular, the carrier has a connecting element which serves to mount the finished molding on another object, for example on another object in the interior of a vehicle. The carrier can be attached before or after the light-conducting element is provided and / or before or after the light-conducting element is introduced into the decorative material. In the case of separate production of the body and the light conductor, the carrier can also be attached before or after the body and the light conductor are connected.

[0065] The carrier can be prefabricated as a single component, for example by injection molding, and can be bonded, for example, to the back side of the main body. However, it is also possible to inject the carrier onto the back side of the main body.

[0066] Alternatively, the light guide element itself can also be configured as a carrier and the mounting of the molding can be achieved by means of an attachment element. In this case, there is no need to attach the carrier and the carrier can be omitted.

[0067] According to the embodiment of the method of the invention, a transparent or translucent protective layer and / or appearance layer is attached to the front side of the decorative material. This is preferably done after pressing in. During the grinding and / or brushing of the front side of the decorative material, this attachment of the protective layer and / or appearance layer is done after pressing in and subsequent grinding and / or brushing.

[0068] For example, the protective layer and / or the appearance layer can include or be made of paint or polyurethane (PUR) or plastic. In order to arrange the protective layer and / or the appearance layer made of PUR or plastic on the front side of the decorative layer, for example, PUR or plastic is poured onto the front side. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] The following will further describe other features and advantages of the present invention in more detail based on the description of the embodiments and with reference to the attached schematic diagrams. In the drawings:

[0070] Figure 1 A first exemplary embodiment of the method according to the invention for producing a molded part according to the invention is shown.

[0071] Figure 2 Shown according to Figure 1 method or according to Figures 7 to 9 A first embodiment of a molded part according to the invention manufactured by a method

[0072] Figure 3 As part of a second exemplary embodiment of the method according to the invention for producing a molded part according to the invention, a method for producing a two-part light element is shown.

[0073] Figure 4 Shows the use of Figure 3 A two-piece optical element with a light-shielding layer manufactured by the method,

[0074] Figure 5 Further process steps of a second embodiment of the method according to the invention are shown for using a Figure 4 The molded part according to the present invention is manufactured by using an optical element having a light-shielding layer.

[0075] Figure 6 Shows the use of Figures 3 to 5 A second embodiment of a molded part according to the invention manufactured by a method of

[0076] Figure 7 As part of a third exemplary embodiment of the method according to the invention for producing a molded part according to the invention, a diaphragm element is shown pressed into a decorative material.

[0077] Figure 8 Shows the use of Figure 7 An intermediate product manufactured by the method of claim 1, comprising a decorative material and a pressed-in shading element, and

[0078] Fig. 9 A further process step according to a third embodiment of the method according to the invention is shown, which process step is used to Figure 8 The intermediate product is used to produce the molded part according to the invention.

[0079] Corresponding parts and components are also denoted by the same reference numerals in different exemplary embodiments.

[0080] Figure 2 and Figure 6 A first and a second embodiment of a molding 10 according to the invention are shown. In both embodiments, the molding 10 comprises a decorative layer 11 having a front side 12 configured as a visible side and a rear side 13 opposite the front side 12. The molding 10 further comprises a light-guiding element 15 comprising a body 16 and a plurality of light conductors 19 protruding from the body 16 at its front side 17.

[0081] The front side 17 of the main body 16 is arranged on the rear side 13 of the decorative layer 11. For this purpose, an adhesive layer 14 is provided in both embodiments, by means of which the main body 16 is bonded to the decorative layer 11. Figure 6 In the second embodiment, an adhesive 34 is further arranged between the main body 16 and the decorative layer 11 .

[0082] The light guide 19 completely penetrates the decorative layer 11 from the rear side 13 to the front side 12 .

[0083] In accordance with Figure 2In the first embodiment of the present invention, the light guide element 15 including the body 16 and the light conductor 19 is manufactured in one piece. Figure 6 In a second embodiment of the present invention, the body 16 of the light-conducting element 15 and the light conductor 19 are manufactured separately and then connected to each other. Figure 6 It can be seen from the adhesive 34 shown in FIG. 1 that the adhesive 34 forms an adhesive layer for connecting the optical waveguide 19 on the front side 17 of the main body.

[0084] Furthermore, in both exemplary embodiments, the molded part 10 comprises a plurality of light elements 21. Figure 2 In a first embodiment of the present invention, these light elements 21 are integrated into the body 16 of the light-guiding element 15 by being completely embedded in the material of the body 16. Figure 6 In the second embodiment of the present invention, the light element 21 is arranged at the body 16 of the light-guiding element 15, specifically in a recess at the back side 18 of the body 16 opposite the front side 17. In both cases, the light element 21 is arranged so that the light emitted from the light element 21 is guided via the light conductor 19 of the light-guiding element 15 to the front side 12 of the decorative layer 11, for example, to display symbols or decorations there or to provide lighting.

[0085] In both embodiments, the shading layer 22 is arranged between the surface 20 of the light conductor 19 and the decorative layer 11. The shading layer 22 can be a self-supporting and / or independent, dimensionally stable shading element. The front side 25 of the shading element 22 adjoins the decorative layer 11, and the back side 26 of the shading element 22 adjoins the light conductor 19.

[0086] The body 16 of the light-guiding element 15 and the optical conductor 19 are configured to be transparent or translucent so as to transmit light as losslessly as possible. This also applies to the adhesive 34. On the other hand, the light-shielding layer 22 is opaque, thereby preventing the light from the optical conductor 19 from entering the decorative layer 11. For example, the light-shielding layer 22 may include or be made of metal and / or opaque plastic. The light-shielding layer 22 may also be configured to reflect or specularly reflect toward the optical conductor 19.

[0087] In both embodiments, the light shielding layer 22 has an interruption 23 at each light conductor 19 on the front side 12 of the decorative layer 11, through which the light guided from the light conductor 19 to the front side 12 of the decorative layer 11 can escape at the front side 12 of the decorative layer 11. These interruptions 23 are penetrated by the light conductor 19 assigned to each other, wherein in the example shown, the light conductor 19 protrudes beyond the front side 12 of the decorative layer 11. This protrusion can, for example, be subsequently ground off, thereby forming a flat visible surface of the molded part 10. In addition, a transparent or translucent protective layer and / or appearance layer can be applied to the front side 12 of the decorative layer (not shown in the figure).

[0088] In order to simplify the production by means of pressing, the light conductor 19 and the light shielding layer 22 of the light guide element 15 in the two embodiments have a shape that tapers gradually toward the front side 12 of the decorative layer 11. In addition, the light shielding element 22 has one or more tips 24 on the side facing away from the body 16 of the light guide element 15, which facilitates the entry into the decorative layer 11 and thus facilitates the pressing.

[0089] The decorative layer 11 is made of or includes a decorative material 11a. The light shielding layer 22 is made of or includes a first material, and the light guide element 15 is made of or includes a second material. The first material and / or the second material has a greater hardness and / or strength than the decorative material 11a of the decorative layer 11. In addition, it can be provided that the first material has a greater hardness and / or strength than the second material, so that the light shielding layer 22 is a reinforcement layer for the light conductor 19 of the light guide element 15.

[0090] In accordance with Figure 2 and Figure 6 In both embodiments, a carrier 30 can also be attached to the back side 18 of the body 16 of the light-conducting element 15, wherein the attachment process is respectively shown in the figure (reference mark 32). However, the carrier 30 can also be attached at an earlier point in time. The carrier 30 has an attachment element 31 for mounting the molding 10 to other objects, for example other objects in the interior space of a vehicle. The carrier 30 and its attachment 32 are shown in dotted lines to indicate that the molding 10 does not absolutely require the carrier 30. Alternatively, it can also be provided that the light-conducting element 15, in particular its body 16, forms a carrier for the molding 10, which enables the molding 10 to be mounted on other objects.

[0091] Figure 1 A first embodiment of a method according to the invention is shown for manufacturing Figure 2 A molding 10 shown in FIG. 1 is provided with a decorative material 11a for forming a decorative layer 11 in the molding 10 to be manufactured. A front surface 12a of the decorative material 11a is used to form a front surface 12 of the decorative layer 11 of the molding 10, and a back surface 13a of the decorative material 11a is used to form a back surface 13 of the decorative layer 11 of the molding 10. An adhesive layer 14 is attached from the back surface 13a of the decorative material 11a. The decorative material 11a is provided in Figure 1 is shown in the upper area of ​​.

[0092] Furthermore, a light guide element 15 is provided. The light guide element 15 is integrally formed, for example, by means of an injection molding process and / or a casting process, and comprises a body 16 and one or more light conductors 19, which protrude at a front side 17 of the body 16 and taper as the distance from the body 16 increases. A plurality of light elements 21 are embedded in the body 16 of the light guide element 15, wherein in the example shown, one light element 21 is assigned to each light conductor 19. The body 16 and the light conductors 19 are designed to be transparent or translucent.

[0093] The shading layer 22 is arranged on the surface 20 of the optical waveguide 19 of the light-guiding element 15. Here, the shading layer can be a coating. But in the present case, the shading layer is a self-supporting and / or independent shape-stable shading element 22 having a front side 25 and a back side 26. The back side 26 of the shading element 22 is against the surface 20 of the optical waveguide 19. Accordingly, the shading element 22 also forms a segment that tapers as the distance from the main body 16 increases. The shading element 22 forms a tip 24 in the most protruding area. The shading element 22 has interruptions 23 between these tips 24. The optical waveguide 19 completely fills the free space generated on the back side due to the tapering of the shading element 22. In addition, each optical waveguide 19 fills one of the interruptions 23, passes through the interruption 23 and extends from the interruption 23. Except for the interruption 23, the shading element 22 completely covers the surface 20 of the optical waveguide 19 and prevents the light from the optical element 21 from escaping from the optical waveguide 19 through the surface 20. Therefore, the light of the light element 21 can escape only in the region of the interruption 23 in the diaphragm element 22 .

[0094] Arrow 28 indicates the process step of pressing. To this end, the provided decorative material 11a and the combination of the shading element 22 and the light guide element 15 are placed in a pressing tool (not shown), wherein as Figure 1 As shown, the front side 25 of the shading element 22 faces the back side 13a of the decorative material 11a. Then, as shown by arrow 28, the shading element 22 and the light guide element 15 arranged on the back side are pressed into the decorative material 11a.

[0095] Already described Figure 2The result of this pressing is shown. During the manufacturing process, the shading element 22 and the light conductor 19 completely penetrate the decorative material 11a from the back side 13a to the front side 12a after being pressed in 28. The decorative material 11a is displaced in this area, whereby the recess formed in the decorative material 11a is completely separated from the light conductor 19 arranged on the back side 25 of the shading element 22 by the shading element 22. Therefore, the light from the light conductor 19 cannot enter the decorative material 11a. The light conductor 19 protrudes beyond the front side 12a of the decorative material 11a at the interruption 23. These protrusions can be ground off in subsequent process steps. If necessary, a transparent or translucent protective layer and / or appearance layer (not shown) can also be cast on the front side 12a.

[0096] exist Figure 1 In FIG. 1 , a dashed line indicates that a carrier 30 can be attached to the back side 18 of the body 16 of the light-guiding element 15 . Arrow 32 indicates this optional process step. This optional attachment of the carrier 30 can be performed before or at the same time as the pressing in. In this case, Figure 2 In the embodiment, the carrier 30 serves as a fixed component of the molded part. Alternatively, the carrier 30 (if any) can also be attached after the pressing, such as Figure 2 The carrier 30 enables the molding 10 to be mounted on other objects, for example on other objects in the interior of a vehicle, for which purpose an attachment element 31 is symbolically shown in the figure. Without the attachment of the carrier 30, the body 16 of the light guide element 15 assumes the carrier function of the molding 10 and, for example, enables the mounting of the molding 10.

[0097] Figures 3 to 5 Shown for manufacturing Figure 6 The second embodiment of the method according to the invention of the molded part 10 shown in FIG. The main difference from the first embodiment is that the light-conducting element 15 is not manufactured in one piece, but the body 16 and the light conductor 19 are initially manufactured separately. For this purpose, firstly a molded part 10 is provided in FIG. Figure 3 The unit shown above is composed of a shading layer 22 (here again a self-supporting and / or independent dimensionally stable shading element 22) and a light conductor 19 attached to the shading layer 22, wherein the back side 26 of the shading element 22 rests on the surface 20 of the light conductor 19, similar to the explanation of the first embodiment described above. In addition, a separately manufactured body 16 is provided, which is Figure 3 In the case shown, the light element 21 is arranged in a recess in the rear side 18 of the body 16. The front side 17 of the body 16 is provided with a transparent or translucent adhesive 34, which forms an adhesive layer for attaching the light conductor 19. Arrow 33 indicates the process step of connecting the body 16 with the light conductor 19 to which the shading element 22 is attached. For this purpose, as shown in FIG. Figure 3As shown by arrow 33 in FIG. 1 , the main body 16 and the optical conductor 19 are pressed together.

[0098] exist Figure 3 In the lower region of the illustration, dashed lines again indicate that a carrier 30 can be attached to the back side 18 of the body 16 of the light-conducting element 15. Arrow 32 again indicates this optional process step. This optional attachment of the carrier 30 can take place before, during or after the body 16 and the light conductor 19 are connected.

[0099] Figure 4 shows the use of the above Figure 3 The light guide element 15 manufactured by the method shown in FIG. 1 and now assembled has a light shielding element 22 attached thereto. The connection is made via an adhesive 34. If the carrier 30 has been attached before or during the connection of the body 16 and the optical conductor 19, then Figure 4 In the embodiment, the carrier 30 has been added as a fixed component. Alternatively, Figure 4 As shown by the dashed lines in FIG. 3 , the carrier 30 can also be attached only after the body 16 and the optical waveguide 19 are connected.

[0100] Figure 5 A further process step is shown, namely Figure 4 The combined light guide element 15 and the light shielding element 22 attached thereto shown in FIG. 1 are pressed into the provided decorative material 11a with the attached adhesive layer 14. This process step corresponds to the above reference Figure 1 The corresponding process step of the first embodiment explained. For more details on this process step, please refer to the above. If the carrier 30 has not yet been attached, the instructions regarding the optional attachment of the carrier 30 also apply accordingly. Figure 6 The molded part 10 is shown after being pressed in. For further details on the optional attachment of the carrier 30, please refer to Figure 2 and Figure 6 The above description.

[0101] Figures 7 to 9 It is also used to make Figure 2 The third embodiment of the method according to the invention is a molded part 10 shown in FIG. The difference from the second embodiment is that the light guide element 15 is also manufactured in one piece in a similar manner to the first embodiment, rather than being manufactured separately according to the body 16 and the light conductor 19 (see FIG. Fig. 9 ). Another major difference is that initially only the shading element 22 is pressed into the decorative material without any light conductor 19 being attached to the shading element 22. Figure 7 shown.

[0102] Therefore, if Figure 7As shown, first a self-supporting and / or independent dimensionally stable shading element 22 is provided, the construction of which corresponds to the shading element 22 already described on the basis of the preceding figures, so reference is made to these descriptions. Similar to the first and second embodiments, a decorative material 11a with an adhesive layer 14 is also provided. However, in contrast to the first embodiment, in this case, an independent shading element 22 to which no light guide element 15 is attached is pressed into the decorative material 11a, that is, there is a free space 27 at the back 26 of the shading element.

[0103] Thus, a Figure 8 2 shows a component consisting of a decorative material 11a and a pressed-in shading element 22. After being pressed in 28, the shading element 22 completely penetrates the decorative material 11a from the back side 13a to the front side 12a. The decorative material 11a is displaced in this area, so that recesses 29 are formed in the decorative material 11a. These recesses 29 are completely defined by the shading element 22. Therefore, no light can enter the decorative material 11a from the recesses 29. On the front side 12a of the decorative material 11a, the interruption 23 in the shading element 22 forms a passage for light.

[0104] Fig. 9 The next process step is shown, as indicated by arrow 35, in which the light guide element 15 produced in one piece with the integrated light element 21 is attached to Figure 8 The structure of the light guide element 15 corresponds to the structure based on Figure 1 The light guide element 15 is described above, so for more details please refer to the above description. The light conductor 19 of the light guide element 15 is inserted into the recess 29 and completely fills the recess 29. The surface 20 of the light conductor 19 is in contact with the back side 26 of the shading element 22. In addition, the light conductor 19 passes through the interruption 23 and protrudes from the front side 12a of the decorative material 11a. Thus, the above-described and Figure 2 10, for which more details please refer to the above description. The main function of the shading element 22 is to prevent the light from the light conductor 19 from entering the decorative material 11a. More precisely, the light from the light conductor 19 can only escape at the interruption 23. The light conductor 19 protruding at the interruption 23 can be ground off in a subsequent process step. If necessary, the front side 12a can also be cast with a transparent or translucent protective layer and / or appearance layer (not shown).

[0105] Fig. 9 Optional attachment of the carrier 30 is again shown in dashed lines in FIG. Such attachment can be performed before, during or after attaching the light guide element 15 to the shading element 22.

[0106] Reference Mark List

[0107] 10 Molded parts

[0108] 11 Decorative layer

[0109] 11a Decorative materials

[0110] 12 front side of the decorative layer 11

[0111] 12a Front side of decorative material 11a

[0112] 13 Back side of the decorative layer 11

[0113] 13a Back side of decorative material 11a

[0114] 14 Adhesive layer

[0115] 15 Light guide element

[0116] 16 Main Body

[0117] 17 Front side of main body 16

[0118] 18 Back side of main body 16

[0119] 19 Photoconductor

[0120] 20 Surface of the light conductor 19

[0121] 21 Optical Components

[0122] 22Shading layer, shading element

[0123] 23 Interruption in the light shielding layer 22 or the light shielding element 22

[0124] 24 Tip of the shading element 22

[0125] 25 front side of the shading element 22

[0126] 26 Back side of the shading element 22

[0127] 27 Free space at the rear side 26 of the shading element 22

[0128] 28 Press in

[0129] 29 Recessed portion in the decorative material 11a

[0130] 30 carriers

[0131] 31 Attachment element of carrier 30

[0132] 32 Attachment of carrier 30

[0133] 33 Connection between the body 16 and the optical conductor 19

[0134] 34 Adhesives

[0135] 35 The light guide element 15 is attached to the light shielding element 22 .

Claims

1. A molded part (10), comprising: A decorative layer (11) having a front side (12) configured as a visible side and a back side (13) opposite to the front side (12), A light-guiding element (15) comprising a body (16) and one or more light conductors (19), the one or more light conductors (19) protruding from the body (16) at a front side (17) of the body (16), wherein the front side (17) of the body (16) is arranged at a back side (13) of the decorative layer (11), and the one or more light conductors (19) completely penetrate the decorative layer (11) from the back side (13) to the front side (12), and one or more light elements (21) arranged in and / or at the light-guiding element (15), wherein light emitted from the light elements (21) is guided to the front side (12) of the decorative layer (11) via the one or more light conductors (19) of the light-guiding element (15), It is characterized in that A shading layer (22) is arranged between a surface (20) of the one or more optical conductors (19) and the decorative layer (11), wherein the shading layer (22) has an interruption (23) at each optical conductor (19) on the front side (12) of the decorative layer (11), and light guided from the one or more optical conductors (19) to the front side (12) of the decorative layer (11) can escape through the interruption (23) at the front side (12) of the decorative layer (11).

2. The molded part (10) according to claim 1, characterized in that The light shielding layer (22) is a light shielding element (22).

3. The molded part (10) according to claim 2, characterized in that The shading element (22) has one or more tips (24) on a side facing away from the main body (16) of the light-guiding element (15).

4. The molded part (10) according to any one of the preceding claims, characterized in that The light-shielding layer (22) comprises metal and / or light-proof plastic or is made of metal and / or light-proof plastic.

5. The molded part (10) according to any one of the preceding claims, characterized in that The light shielding layer (22) is configured to reflect or specularly reflect toward the one or more optical waveguides (19).

6. The molded part (10) according to any one of the preceding claims, characterized in that The decorative layer (11) is made of or includes a decorative material (11a), the light-shielding layer (22) is made of or includes a first material, and the light-guiding element (15) is made of or includes a second material, wherein the first material and / or the second material has a greater hardness and / or strength than the decorative material (11a) of the decorative layer (11).

7. The molded part (10) according to claim 6, characterized in that The first material has a greater hardness and / or strength than the second material.

8. The molded part (10) according to any one of the preceding claims, characterized in that One or more optical waveguides (19) of the light-guiding element (15) and / or the light-shielding layer (22) at least partially have a shape that tapers toward the front side (12) of the decorative layer (11).

9. A method for producing a molded part (10), wherein the molded part (10) comprises: A decorative layer (11) having a front side (12) configured as a visible side and a back side (13) opposite to the front side (12), A light-guiding element (15) comprising a body (16) and one or more light conductors (19), the one or more light conductors (19) protruding from the body (16) at a front side (17) of the body (16), wherein the front side (17) of the body (16) is arranged at a back side (13) of the decorative layer (11), and the one or more light conductors (19) completely penetrate the decorative layer (11) from the back side (13) to the front side (12), and one or more light elements (21) arranged in and / or at the light guide element (15), wherein light emitted from the one or more light elements (21) is guided to the front side (12) of the decorative layer (11) via the one or more light conductors (19) of the light guide element (15), A light shielding layer (22) is arranged between a surface (20) of the one or more light conductors (19) and the decorative layer (11), wherein the light shielding layer (22) has an interruption (23) on the front side (12) of the decorative layer (11) at each light conductor (19), so that light guided from the one or more light conductors (19) to the front side (12) of the decorative layer (11) can escape at the front side (12) of the decorative layer (11), The shading layer (22) is a self-supporting and / or independent, dimensionally stable shading element (22). Wherein, the method comprises the following steps: a) providing a decorative material (11a) to form the decorative layer (11), wherein the front side (12a) of the decorative material (11a) is used to form the front side (12) of the decorative layer (11), and the back side (13a) of the decorative material (11a) is used to form the back side (13) of the decorative layer (11), b) providing a light-guiding element (15) comprising a body (16) and one or more light conductors (19) protruding at a front side (17) of the body (16), c) providing the self-supporting and / or independent dimensionally stable shading element (22) with a front side (25) and a rear side (26), wherein one or more free spaces (27) are formed at the rear side (26) for accommodating the one or more light conductors (19) of the light-guiding element (15), d) placing the decorative material (11a) and the shading element (22) into a pressing tool, wherein the front side (25) of the shading element (22) faces the back side (13) of the decorative material (11), e) pressing (28) the shading element (22) into the decorative material (11a) so that the shading element (22) completely penetrates the decorative material (11a) from the back side (13a) to the front side (12a) after being pressed (28) and defines one or more through-going recesses (29) formed by pressing (28) into the decorative material (11a).

10. The method according to claim 9, characterized in that Before the shading element (22) is placed into the pressing tool according to step d), the light-guiding element (15) is attached to the back side (26) of the shading element (22) so that the one or more optical conductors (19) of the light-guiding element (15) are introduced into the one or more free spaces (27) of the shading element (22) and completely fill the one or more free spaces (27), thereby pressing the shading element (22) and the light-guiding element (15) attached to the back side (26) of the shading element into the decorative material (11a) according to step e).

11. The method according to claim 9, characterized in that After the shading element (22) is pressed (28) into the decorative material (11a) according to step e), the light-guiding element (15) is attached to the back side (26) of the shading element (22) so that the one or more optical conductors (19) of the light-guiding element (15) are introduced into the one or more free spaces (27) of the shading element (22) and completely fill the one or more free spaces (27).

12. The method according to any one of claims 9 to 11, characterized in that The shading element (22) provided according to step c) is produced by means of an injection molding process and / or a casting process and / or a forming process and / or a stamping process.

13. A method for manufacturing a molded part (10), wherein the molded part (10) comprises: A decorative layer (11) having a front side (12) configured as a visible side and a back side (13) opposite to the front side (12), A light-guiding element (15) comprising a body (16) and one or more light conductors (19), the one or more light conductors (19) protruding from the body (16) at a front side (17) of the body (16), wherein the front side (17) of the body (16) is arranged at a back side (13) of the decorative layer (11), and the one or more light conductors (19) completely penetrate the decorative layer (11) from the back side (13) to the front side (12), and one or more light elements (21) arranged in and / or at the light guide element (15), wherein light emitted from the one or more light elements (21) is guided to the front side (12) of the decorative layer (11) via the one or more light conductors (19) of the light guide element (15), Wherein, the method comprises the following steps: a) providing a decorative material (11a) to form the decorative layer (11), wherein the front side (12a) of the decorative material (11a) is used to form the front side (12) of the decorative layer (11), and the back side (13a) of the decorative material (11a) is used to form the back side (13) of the decorative layer (11), b) providing a light-guiding element (15) comprising a body (16) and one or more light conductors (19) protruding at a front side (17) of the body (16), c) placing the decorative material (11a) and the light guide element (15) into a pressing tool, wherein the front side (17) of the main body (16) of the light guide element (15) faces the back side (13a) of the decorative material (11a), d) pressing the one or more light conductors (19) of the light-guiding element (15) into the decorative material (11a), so that the one or more light conductors (19) completely penetrate the decorative material (11a) after being pressed.

14. The method according to claim 13, characterized in that Before providing according to step b) or before being placed in the pressing tool according to step c), a shading layer (22) is arranged on the surface (20) of the one or more optical conductors (19) of the light-guiding element (15) provided according to step b), wherein the shading layer (22) of each optical conductor (19) has an interruption (23) through which light from the one or more optical conductors (19) can escape.

15. The method according to any one of claims 9 to 14, characterized in that After the pressing, the front side (12a) of the decorative material (11a) is sanded and / or brushed off.

16. The method according to any one of claims 9 to 15, characterized in that Before being placed in the pressing tool, the provided decorative material (11a) is provided with an adhesive layer (14) on its back side (12a).

17. The method according to any one of claims 9 to 16, characterized in that The provided light guide element (15) is manufactured in one piece, wherein the one or more light elements (21) are arranged in and / or on the one piece light guide element (15).

18. The method according to any one of claims 9 to 16, characterized in that The body (16) and the one or more optical waveguides (19) of the provided light-guiding element (15) are manufactured separately and then connected to one another (33), wherein the one or more light-guiding elements (21) are arranged in and / or at the body (16).

19. The method according to any one of claims 9 to 18, characterized in that A carrier (30) is attached (32) to a back surface (18) of the body (16) of the light-guiding element (15) opposite to the front surface (17).

20. The method according to any one of claims 9 to 19, characterized in that A transparent or translucent protective layer and / or appearance layer is attached to the front side (12a) of the decorative material (11a).

Images