Flat Wire Harness Tape for Roof Lining Adhesion
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Solution Overview
Problem
Existing wiring structures for automobile roof portions face challenges in securely fixing wire harnesses due to non-uniform cross-sections and limited adhesive areas, leading to potential movement and reduced fixing strength, especially under vehicle vibrations.
Innovation Solution
The wire harness is fixed using belt-shaped tapes that sandwich and hold electric wires in a flat shape, with adhesive surfaces on the inner surfaces of the tapes, ensuring a wide adhesive area and stable fixation to the roof lining without additional components or complex processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the wire harness is fixed using a tubular body with gaps between flexible sheets, then the adhesion area is increased, but the electric wires can move freely causing insufficient adhesion in some areas and reduced fixing strength
Solution Approach 1:
The patent uses flat sheets with adhesive surfaces to replace the tubular body structure. These flat sheets are conformable to the wire harness and provide uniform adhesion across the entire surface, eliminating the gap issues of tubular structures while maintaining flexibility for proper attachment.
Solution Approach 2:
The patent changes the structural parameters from a tubular configuration with gaps to a flat sheet configuration with continuous adhesive surface. This parameter change ensures uniform contact and adhesion across the entire wire harness surface, preventing localized movement while maximizing the adhesion area.
2Adaptability or versatility
If the electric wires are left unbound to allow movement through the tubular body, then the wires can be routed flexibly, but the bundle cannot maintain a flat shape reducing adhesion effectiveness
Solution Approach 1:
The patent applies adhesive surfaces to flat sheets in advance, which are then positioned around the wire harness bundle. The adhesive is activated to bond the sheets to the wires, preliminarily securing the flat shape before final installation, ensuring the bundle maintains its form during routing and installation.
3Ease of manufacture
If only predetermined positions of the wire harness are fixed with adhesive tape, then the adhesive tape area is limited, but additional welding guns are required increasing device complexity
Solution Approach 1:
The patent integrates the adhesive function directly into the flat sheets that wrap around the wire harness. These multi-functional sheets provide both structural support and adhesion, eliminating the need for separate adhesive tapes and welding guns, thereby simplifying the manufacturing process and reducing device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration maintains a flat form, enhances fixing strength, reduces movement and vibration impact, and simplifies the wiring process while allowing flexibility for easy handling and storage, improving both adhesion and workability.
Implementation Method 1
a wire harness is wired by being fixed to an adhesive member (2) laid on a surface of a roof lining (1)
Data Source
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AI summary
A wiring structure (W) of a wire harness in which the wire harness (W) is wired by being fixed to an adhesive member (2) laid on a surface of a roof lining (1) of an automobile is provided. At least a part of a plurality of electric wires (Wa) constituting the wire harness (W) in a length direction are sandwiched between two belt-shaped tapes (11, 12) in which both side edges (11a, 12a) in the width direction are fixed to each other, are arranged side by side in the width direction of the tapes (11, 12), and are attached to an adhesive surface provided on an inner surface of at least one of the two tapes (11, 12), thereby holding the bundle of the electric wires in a flat shape, and an outer surface of one of the two tapes (11, 12) is attached to the adhesive member, whereby the wire harness (W) is fixed to the surface of the roof lining (1).