Fiber optic fabric and true wood combined trim, cutting die

Abstract

The utility model discloses a kind of ornaments of optical fiber fabric and true wood combination, for being assembled on the mounting surface of the inner base material of vehicle body, comprising: optical fiber fabric layer, non-woven fabric layer and veneer layer are sequentially laminated and mutually adhered along by inside to outside direction;The optical fiber fabric layer is composed of fabric and at least one optical fiber woven in the fabric;The input end of multiple optical fibers is set on the side edge of plastic base material after bundling, and is commonly optically coupled with a light-emitting component, to guide the light emitted by the light-emitting component into the optical fiber, the present application replaces rigid light guide plate with flexible optical fiber fabric, significantly reduces development and material cost, while realizing ultra-thin, curved surfaceable wood luminous effect;The utility model relates to the technical field of automotive interior.

Description

Technical Field

[0001] This utility model relates to the field of automotive interior technology, and more specifically to a decorative component and cutting mold that combines fiber optic fabric and real wood. Background Technology

[0002] Currently, there are three main types of exposed wood veneer trim pieces in the automotive industry. The first type is traditional trim, lacking touch control or light transmission. The second type is ambient lighting trim, where specific patterns are laser-engraved on the B-side of the wood veneer, and electronic components such as light guides, PCBAs, and LEDs are integrated underneath to achieve ambient lighting functionality. The third type is smart surfaces, where specific patterns are laser-engraved on the back of the wood veneer to achieve localized light transmission, and touch sensors, light-emitting modules, vibration motors, and other modules are integrated on the back to achieve interactive functions such as light emission, touch control, and feedback.

[0003] The product targeted by this patent is mainly the second type: ambient lighting decorative parts.

[0004] Disadvantages: Existing wood interior ambient lighting requires a light guide plate of the same size as the luminous surface to be placed on the back of the product to achieve full-surface illumination, along with several LED beads and other electronic components. This results in higher BOM and development costs, and the presence of the light guide plate increases the product's thickness, taking up more interior space. Furthermore, to ensure uniform light distribution, the complexity of the curved surface design of the light guide plate is limited, making it impossible to achieve complex curved shapes. Utility Model Content

[0005] To address the shortcomings and defects of existing technologies, a decorative component combining optical fiber fabric and real wood is provided. It uses flexible optical fiber fabric to replace rigid light guide plates, significantly reducing development and material costs, while achieving an ultra-thin, curved wood-like luminous effect.

[0006] A trim piece combining fiber optic fabric and real wood, for mounting on an interior substrate of a vehicle body, comprising: The optical fiber fabric layer, the non-woven fabric layer, and the wood veneer layer are stacked and bonded together in sequence from the inside out. The optical fiber fabric layer consists of a fabric and at least one optical fiber woven into the fabric; The optical fiber has an input end, and the input ends of multiple optical fibers are bundled together and positioned on the same side, and are coupled together to the light-emitting end of a light-emitting component to guide the light emitted by the light-emitting component into the optical fiber. The wood veneer layer has a light-transmitting pattern, and the light-transmitting pattern is correspondingly positioned to the side light-emitting area of ​​the optical fiber fabric layer.

[0007] With the above structure, the decorative piece combining optical fiber fabric and real wood of this invention has the following advantages compared with the prior art: 1. In existing products, light guide plates require the development of special injection molds, while optical fiber fabrics do not require injection molds, can be directly woven and assembled into the decorative panel, thus reducing development costs; 2. Existing products require several LED beads to achieve uniform light emission, while in this application, the light-emitting component can be equipped with only one LED bead. After being bundled at the input ends of multiple optical fibers, it is coupled with the same LED bead, which can realize the light guiding of multiple optical fibers and reduce the BOM cost. 3. The thickness of the light guide plate in existing products is relatively high, generally 3-6mm, while the thickness of the optical fiber fabric is ≤1mm, which can reduce the product thickness and leave more cabin space; 4. In existing products, light guide plates are generally injection molded from PMMA or PC materials, which are rigid sheets. To ensure uniform light guiding effect, this limits the complexity of the product's curved surface shape. In contrast, fiber optic fabric is a flexible material with higher styling flexibility, allowing for more aesthetically pleasing and complex curved surface designs.

[0008] As an improvement of this utility model, the optical fiber fabric layer is woven into a mesh-like fabric structure by multiple optical fibers, warp threads and weft threads. The sides of the optical fiber are laser-etched or mechanically bent to form a side-emitting area; The multiple optical fibers are arranged vertically at intervals and extend horizontally respectively; The meridian is parallel to the optical fiber and is disposed between adjacent optical fibers; The weft threads extend vertically and interweave with the optical fibers and warp threads to form the mesh-like fabric structure.

[0009] As an improvement of this utility model, the mounting surface and the optical fiber fabric are bonded together by a first adhesive layer.

[0010] As an improvement of this utility model, the optical fiber fabric and the non-woven fabric are bonded together by a second adhesive layer.

[0011] As an improvement of this utility model, the wood veneer and the non-woven fabric are bonded together with adhesive tape.

[0012] As an improvement of this utility model, the surface of the wood veneer is provided with a paint layer.

[0013] A cutting die for cutting decorative pieces combining fiber optic fabric and real wood as described in any of the above descriptions, comprising: The mounting base has a profile that matches the mounting surface of the substrate; The die-cutting mold can move up and down relative to the surface and has a cutting edge that adapts to the outer edge of the target trim piece; The cutting edge has a notch, the position of which corresponds to the position of the input end of the optical fiber after it is bundled together on the side of the plastic substrate, so as to avoid the input end of the optical fiber when the die moves down to cut. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the product of this utility model.

[0015] Figure 2 This is a schematic diagram of the CC-direction cross-sectional structure of this utility model.

[0016] Figure 3 This is the utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0017] Figure 4 This is a structural schematic diagram of the decorative component of this utility model in the state of component explosion.

[0018] Figure 5 This is a partial weaving structure diagram of the light-emitting fabric of this utility model.

[0019] Figure 6 This is a schematic diagram of the cutting mold structure of this utility model.

[0020] Figure 7 This is a schematic diagram of the cutting mold of this utility model when cutting decorative parts.

[0021] The figure shows: 1. Substrate; 1.1. Mounting surface; 2. Fiber optic fabric layer; 2.1. Fiber optic cable; 2.11. Input end; 2.2. Warp; 2.3. Weft; 3. Non-woven fabric layer; 4. Wood veneer layer; 4.1. Adhesive tape; 5. First adhesive layer; 6. Second adhesive layer; 7. Fixing base; 7.1. Profile; 8. Die-cutting die; 8.1. Blade; 8.11. Notch; 9. Light-emitting component; 10. Paint layer. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] Please see Figure 1-6 As shown, A decorative component combining fiber optic fabric and real wood is used to be mounted on the mounting surface 1.1 of the base material 1 inside the vehicle body. The base material 1 is generally a plastic bracket used for mounting decorative panels inside the vehicle body, and can be made of commonly used automotive interior materials such as PC+ABS+GF20. The accessories include: The optical fiber fabric layer 2, non-woven fabric layer 3 and wood veneer layer 4 are stacked and bonded together in sequence from the inside to the outside. The wood veneer layer 4 has a specific pattern laser-engraved on the B side of the wood veneer. The wood veneer layer 4 can be made of high light transmittance wood veneer such as maple or linden to ensure the final light emission effect of the optical fiber 2.1 fabric. The optical fiber fabric layer 2 is composed of a fabric and at least one optical fiber 2.1 woven into the fabric; Optical fiber 2.1 has an input end 2.11. Multiple optical fibers 2.1 have this input end 2.11 bundled together and positioned on the same side, and are coupled together to the light-emitting end of a light-emitting component 9 to guide the light emitted by the light-emitting component 9 into the optical fiber 2.1. The optical fiber 2.1 is mainly a polymer optical fiber 2.1 (POF or PMMA). After being woven into a fabric, the side of the optical fiber 2.1 is mechanically damaged, laser-etched, bent, etc. to form a side light-emitting area, so that some of the transmitted light can leak out from the side (the side opposite to the veneer layer 4). The veneer layer 4 is provided with a light-transmitting pattern, which is set to correspond to the side light-emitting area of ​​the optical fiber fabric layer 2.

[0024] When in use, the light emitted by the light-emitting component 9 is transmitted through the optical fiber 2.1, and the wood veneer layer 4 allows the light to pass through, ultimately presenting the desired light-emitting effect.

[0025] In this application, the fiber optic 2.1 fabric is woven with the fabric to form a thin sheet structure, which is placed between the plastic substrate 1, the non-woven fabric layer 3, and the wood veneer layer 4. The thickness of the fiber optic 2.1 fabric is ≤1mm, which can reduce the product thickness and leave more cabin space. After multiple optical fibers 2.1 are bundled together at their input ends 2.11, they are coupled to the same light-emitting component 9, where the light-emitting component 9 can be a single LED bead, thus enabling light guiding of multiple optical fibers 2.1 and reducing costs. In addition, the light guide plate requires the development of a special injection mold, while the fiber optic 2.1 fabric is directly woven and assembled into the decorative panel, without the need to develop a special injection mold, thus reducing development costs; In existing products, light guide plates are generally injection molded from PMMA or PC materials, which are rigid sheets. To ensure uniform light guiding effect, there are certain limitations on the complexity of the curved surface shape of the product.

[0026] Fiber optic 2.1 fabric is a flexible material with high styling flexibility, which can realize more aesthetically pleasing and complex curved surface product shapes.

[0027] In some embodiments, the optical fiber fabric layer 2 is woven from multiple optical fibers 2.1, warp threads 2.2, and weft threads 2.3 into a mesh-like fabric structure; Multiple optical fibers 2.1 are arranged vertically at intervals and extend horizontally respectively; Meridian 2.2 is parallel to fiber 2.1 and is located between adjacent fibers 2.1. Meridian 2.2 is distributed on the upper and lower sides of fiber 2.1 and serves to limit fiber 2.1. The weft 2.3 extends vertically and interweaves with the optical fiber 2.1 and the warp 2.2 to form a mesh-like fabric structure. There are multiple interweaving nodes between the weft 2.3 and the optical fiber 2.1 and the warp 2.2 to form a uniform constraint on the optical fiber 2.1 and the warp 2.2, so that the structure of the fabric has good load-bearing performance in the tensile and compressive directions, avoids local collapse or wrinkles, and ensures the flatness of the real wood veneer surface. In addition, the braided structure ensures that the bending radius of the optical fiber 2.1 is consistent and the light emission angle is stable, thereby achieving uniform light emission throughout the entire visible area; The flexibility of fabrics allows for the creation of complex curved surfaces in decorative pieces, making them more versatile.

[0028] In some embodiments, the mounting surface 1.1 is bonded to the fiber optic fabric 2.1 by a first adhesive layer 5; the fiber optic fabric 2.1 is bonded to the non-woven fabric by a second adhesive layer 6; and the wood veneer is bonded to the non-woven fabric by adhesive tape 4.1, or by glue. A paint layer 10 is applied to the surface of the wood veneer. This layer can be a clear varnish, a colored varnish, PUR, or other coatings to protect the surface of the wood veneer. Alternatively, this paint layer can be removed, leaving the wood veneer exposed for a better tactile and visual experience.

[0029] The above improvements result in a product that is simple to manufacture and has a stable and reliable connection between structures.

[0030] Please see Figure 7 As shown, a cutting die is used to cut decorative pieces combining fiber optic fabric and real wood as described above, comprising: The mounting base 7 has a profile 7.1 that is adapted to the mounting surface 1.1 of the base material 1; The die 8 can move up and down relative to the surface 7.1 and is provided with a cutting edge 8.1 that is adapted to the outer edge of the target trim piece; The blade 8.1 has a notch 8.11, the position of which corresponds to the position of the input end 2.11 of the optical fiber 2.1 after it is bundled together on the side of the plastic substrate 1, so as to avoid the input end 2.11 of the optical fiber 2.1 when the die 8 moves down to cut.

[0031] Since the overall dimensions of the optical fiber 2.1 fabric and the wood veneer need to be larger than those of the plastic substrate 1, the optical fiber fabric layer 2 and the wood veneer layer 4 need to be cut to fit the mounting surface 1.1 of the plastic substrate 1 before being bonded to the plastic substrate 1. Therefore, the profile 7.1 of the fixing base 7 is a contoured surface of the mounting surface 1.1 of the plastic substrate 1. In use, the adhesive layer of the optical fiber fabric layer 2 and the wood veneer layer 4 is adapted to the profile 7.1. Furthermore, the adhesive layer of the optical fiber fabric layer 2 and the wood veneer layer 4 is fixed (generally by inserting a pin into the fixing base 7). Further, the lowering die 8 is moved down, and the cutting edge 8.1 of the die 8 cuts off the excess material. In addition, the notch 8.11 allows the input end 2.11 of the optical fiber 2.1 to be retained. Finally, the cut adhesive layer of the optical fiber fabric layer 2 and the wood veneer layer 4 is bonded to the plastic substrate 1 to complete the assembly. It has the characteristics of convenient manufacturing, smooth cutting edge, and high yield.

[0032] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A decorative element combining fiber optic fabric and real wood, used for mounting on the mounting surface (1.1) of a substrate (1) inside a vehicle body, characterized in that, include: The optical fiber fabric layer (2), the non-woven fabric layer (3) and the wood veneer layer (4) are stacked and bonded together in sequence from the inside to the outside. The optical fiber fabric layer (2) is composed of a fabric and at least one optical fiber (2.1) woven into the fabric; The optical fiber (2.1) has an input end (2.11). The input ends (2.11) of multiple optical fibers (2.1) are arranged on the same side after being bundled together, and are coupled together to the light-emitting end of a light-emitting component (9) to guide the light emitted by the light-emitting component (9) into the optical fiber (2.1). The wood veneer layer (4) has a light-transmitting pattern, which is set in accordance with the side light-emitting area of ​​the optical fiber fabric layer (2).

2. The decorative piece combining optical fiber fabric and real wood according to claim 1, characterized in that: The optical fiber fabric layer (2) is woven into a mesh-like fabric structure by multiple optical fibers (2.1), warp threads (2.2) and weft threads (2.3); The side of the optical fiber (2.1) is laser-etched or mechanically bent to form a side-emitting area; The multiple optical fibers (2.1) are arranged vertically at intervals and extend horizontally respectively; The meridian (2.2) is parallel to the optical fiber (2.1) and is located between adjacent optical fibers (2.1); The weft (2.3) extends vertically and interweaves with the optical fiber (2.1) and warp (2.2) to form a mesh-like fabric structure.

3. The decorative piece combining optical fiber fabric and real wood according to claim 1, characterized in that: The mounting surface (1.1) and the fiber (2.1) fabric are bonded together by a first adhesive layer (5).

4. The decorative piece combining optical fiber fabric and real wood according to claim 1, characterized in that: The optical fiber (2.1) fabric and the nonwoven fabric are bonded together by a second adhesive layer (6).

5. The decorative piece combining optical fiber fabric and real wood according to claim 1, characterized in that: The wood veneer and the non-woven fabric are bonded together with adhesive tape (4.1).

6. The decorative piece combining optical fiber fabric and real wood according to claim 1, characterized in that: The surface of the wood veneer is provided with a paint layer (10).

7. A cutting die for cutting decorative pieces combining optical fiber fabric and real wood as described in any one of claims 1-6, characterized in that, include: The mounting base (7) has a profile (7.1) that is adapted to the mounting surface (1.1) of the substrate (1). The die (8) can move up and down relative to the surface (7.1) and is provided with a cutting edge (8.1) that is adapted to the outer edge of the target trim. The cutting edge (8.1) is provided with a notch (8.11), the position of which corresponds to the position of the input end (2.11) of the optical fiber (2.1) after it is bundled together on the side of the plastic substrate (1), so as to avoid the input end (2.11) of the optical fiber (2.1) when the die (8) moves down to cut.

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