Folded Vehicle Interior Textile for Protected Optical Fiber Lighting

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Solution Overview

Problem

Existing methods for attaching illumination devices to textiles in vehicle interiors often result in exposure and damage of optical fibers, especially when the area between the textile and the soft layer is insufficient or when fibers inadvertently extend outside the textile geometry.

Innovation Solution

A method involving folding the textile along a specific fold line to cover the first end of the protective sheath, potentially incorporating cut-outs for the protective sheath and using fixing devices to secure the fold, thereby preventing optical fibers from being exposed and damaged.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the area between the textile and the soft layer is reduced, then the illumination device can be more compact, but optical fibers may be exposed and damaged

Engineering Contradiction:
Improvecompactness of illumination deviceVSAvoidprotection of optical fibers
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The textile is folded along a fold line, transforming the spatial arrangement from a two-dimensional planar layout to a three-dimensional folded structure. This dimensional change allows the optical fibers to be routed through the folded textile layers, providing protection without requiring additional space between the textile and soft layer.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The optical fibers are nested within the folded textile structure, where the textile layers are folded over the protective sheath containing the fibers. This nesting arrangement protects the fibers by embedding them within the textile folds, eliminating the need for a large gap between textile and soft layer.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Area of stationary object

If optical fibers extend outside the textile geometry, then the illumination coverage can be expanded, but the fibers become exposed and vulnerable to damage

Engineering Contradiction:
Improveillumination coverage areaVSAvoidexposure and damage risk of optical fibers
Core Design Contradiction:
Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

By folding the textile along a fold line, the patent creates a three-dimensional configuration where optical fibers can extend beyond the original two-dimensional textile boundaries while remaining protected within the folded structure. The fold line acts as a hinge that allows fiber extension in a new spatial dimension.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The folded textile itself serves as an intermediary protective structure between the optical fibers and the external environment. The fold line creates an intermediate folded configuration that allows fibers to extend outward while being shielded by the folded textile layers.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If a soft layer is laminated on the back side of the textile, then the touch sensation is improved, but the space for fiber protection is reduced

Engineering Contradiction:
Improvetouch sensationVSAvoidspace available for fiber protection
Core Design Contradiction:
Ease of operationVSVolume of moving object

Solution Approach 1:

The folding operation transforms the available protection space by creating a three-dimensional folded structure. This dimensional transformation allows the textile to provide fiber protection through its folded configuration rather than requiring additional space between the textile and soft layer.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The textile is folded along a fold line to create a flexible protective structure that envelops the optical fibers. This flexible folded configuration provides protection without requiring additional volume, allowing the soft layer to be laminated close to the textile while maintaining fiber safety.

Inventive Principle:
Principle #30Flexible shells and thin films

Data Source

PatentEP4556315A1Method for attaching an illumination device at a textile, textile for an interior part of a vehicle comprising an illumination device, interior part comprising such a textile and vehicle having such an interior part and/or such a textile
Publication Date: 2025.05.21 MOTHERSON INNOVATIONS CO LTD
  • EP4556315A1 patent drawingFigure 1~2
  • EP4556315A1 patent drawingFigure 3~6
  • EP4556315A1 patent drawingFigure 7~9

AI summary

The present invention relates to a method for attaching an illumination device (20) at a textile (30), the illumination device (20) comprising a protective sheath (22) with a first end (22a) and a second end (22b), at least one optical fiber (24) being guided in the protective sheath (22), the optical fiber (24) comprising a first end (22a) protruding over the first end (22a) of the protective sheath (22), the method comprising the steps of - providing a textile (30) comprising a front side (30a) and a back side (30b) - folding the textile (30) along a fold line (34) such that the first end (22a) of the protective sheath (22) is covered.