Unjacketed Wire Structure with Segmented Ground Members
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Solution Overview
Problem
Conventional electric wires with electromagnetic shielding measures are heavy and inflexible, making them difficult to route in aircraft, and replacing existing wires with shielded wires is time-consuming and requires significant effort.
Innovation Solution
An electric wire structure featuring individual electric wires and ground members bundled without a jacket, allowing for flexible placement of ground members only where needed, minimizing weight and improving routing ease, and enabling existing wires to be retrofitted with shielding without replacing them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a jacket is used to integrate core wire, metal braid, and return line into a single shielded electric wire structure, then electromagnetic shielding effect is achieved, but weight increases and flexibility decreases
Solution Approach 1:
The invention divides the shielded electric wire structure into separate components: individual return lines are positioned between adjacent core wires rather than being integrated into a single jacketed structure. This segmentation allows each component to perform its function independently while achieving electromagnetic shielding without the weight penalty of a continuous jacket.
Solution Approach 2:
The invention extracts the return lines from the traditional jacketed structure and positions them directly between adjacent core wires. By taking out the return lines and placing them in this intermediate position, the structure achieves electromagnetic shielding functionality without requiring a heavy enclosing jacket, thus reducing overall weight while maintaining shielding effectiveness.
2Reliability
If a jacket is used to integrate core wire, metal braid, and return line into a single shielded electric wire structure, then electromagnetic shielding effect is achieved, but flexibility and ease of routing decrease
Solution Approach 1:
By segmenting the shielded structure into separate return lines positioned between core wires rather than a unified jacketed assembly, each component maintains its individual flexibility. This allows the electric wire to be routed more easily through narrow passages and complex paths in aircraft while preserving the electromagnetic shielding effect.
Solution Approach 2:
The return lines are extracted from the rigid jacketed structure and positioned independently between core wires. This extraction allows the electric wire components to bend and flex more freely, improving ease of routing through narrow passages without compromising the electromagnetic shielding functionality.
3Reliability
If existing electric wire is replaced with a new shielded electric wire to provide electromagnetic shielding, then electromagnetic shielding effect is achieved, but time and effort required for installation increase significantly
Solution Approach 1:
The invention enables preliminary positioning of return lines between adjacent core wires during the wire assembly process, creating a shielded structure that can be installed as a complete unit. This preliminary arrangement of shielding components allows existing wires to be retrofitted with shielding functionality without requiring removal and replacement, significantly reducing installation time and effort.
Solution Approach 2:
The invention merges the shielding function with the existing wire structure by positioning return lines between adjacent core wires, effectively combining the original wire with electromagnetic shielding components into a single integrated assembly. This merging allows existing wires to gain shielding capability without replacement, reducing installation time and effort.
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
The solution provides effective electromagnetic shielding while reducing weight and improving flexibility, allowing for easier routing and retrofitting of existing wires, thus addressing the weight and flexibility issues of conventional shielded wires.
Implementation Method 1
an electromagnetic shielding effect can be obtained as a current flows through the GND members when the electric wires are irradiated with electromagnetic waves
Data Source
AI summary
An electric wire structure keeps down the weight and improves the ease of routing, as well as allows an existing electric wire to be easily provided with measures against electromagnetic waves. The electric wire structure includes: a single or plurality of electric wires; a single or plurality of GND members which are disposed around the electric wires along the electric wires and are grounded at both ends; and a bundling member for directly bundling the electric wires and the GND members which are not covered integrally by a jacket.