Twisted Pair Cable Shield Structure for Lightweight Noise Reduction
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Solution Overview
Problem
Conventional shield structures for twisted pair cables are complex and weight-intensive, making weight saving and noise resistance challenging due to the use of metal shields covering wires side by side.
Innovation Solution
A shield structure with conductive side wall portions and connecting portions around a parallel portion of twisted pair cables, where the wires are arranged side by side, simplifying the structure and reducing weight while improving noise resistance by electromagnetic shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a shield member covers the two wires disposed side by side in the vertical and lateral directions, then noise resistance is improved, but structure becomes complicated and weight increases
Solution Approach 1:
The shield member is divided into two separate side wall portions (first and second side wall portions) that are disposed apart from each other, rather than using a continuous enclosing shield. This segmentation reduces structural complexity while maintaining noise shielding effectiveness through the conductive surfaces.
Solution Approach 2:
The shield member extends primarily in the lateral direction rather than enclosing the wires in all three dimensions. By focusing shielding in the critical lateral dimension where noise interference most commonly occurs, the structure achieves effective noise resistance without the complexity of a fully enclosed shield.
2Object-affected harmful factors
If a shield member covers the two wires disposed side by side in the vertical and lateral directions, then noise resistance is improved, but weight increases
Solution Approach 1:
The shield member is segmented into two separate side wall portions rather than a continuous enclosing structure. This reduces the total amount of conductive material required, thereby reducing weight while maintaining effective noise shielding through the distributed conductive surfaces.
Solution Approach 2:
The shield member provides shielding coverage in the critical lateral direction where noise interference most commonly occurs, rather than providing complete 360-degree enclosure. This partial shielding approach achieves sufficient noise resistance with reduced material and weight.
3Object-affected harmful factors
If the two side wall portions are electrically connected, then electromagnetic shielding effectiveness is improved, but structure becomes more complex
Solution Approach 1:
The first and second side wall portions are electrically connected through conductive connecting portions, creating an equipotential surface that enhances electromagnetic shielding effectiveness. This electrical connection allows the segmented shield to function as a unified shielding structure without requiring complex interconnection mechanisms.
Solution Approach 2:
The connecting portions integrate the electrical connection function with the structural support function, merging multiple functions into a single component. This reduces overall structural complexity by eliminating the need for separate connection elements and simplifying the assembly process.
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 simplifies the structure, reduces weight, and enhances noise resistance performance by homogenizing the electromagnetic environment and reducing noise interference, while maintaining effective shielding.
Implementation Method 1
a shield member including two conductive side wall portions disposed around the parallel portion and two connecting portions configured to electrically connect the two side wall portions
Data Source
AI summary
A shield structure includes a twisted pair cable formed by twisting two wires and including a parallel portion, the two wires being arranged side by side in the parallel portion, and a shield member including two conductive side wall portions disposed around the parallel portion and two connecting portions configured to connect the two side wall portions. The two connecting portions are respectively disposed on front end parts and rear end parts in an extending direction of the parallel portion, out of the two side wall portions.