Dual-Textile Electromagnetic Shielding Sleeve for Radial Expansion
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Solution Overview
Problem
Existing electromagnetic shielding sleeves face challenges in providing consistent shielding and mechanical protection due to limited radial expansion, high weight, and mismatched dimensions with electric cables and connectors, leading to inefficiencies in energy consumption and handling complexities.
Innovation Solution
A dual-textile sleeve system with separate rest diameters for protective and connecting sleeves, allowing for adjustable weight optimization and maintaining shielding properties through electrically conductive securing areas, enabling radial expansion to fit various connector shapes while preserving cable protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fully-metal shielding sleeve is used, then shielding properties are ensured, but weight increases and radial expansion capability is limited
Solution Approach 1:
The patent uses a composite structure combining metal yarns (for electromagnetic shielding) with plastic material yarns (for radial expansion and weight reduction). This composite textile sleeve maintains shielding effectiveness while enabling radial deformation and reducing overall weight compared to fully-metal alternatives.
2Weight of moving object
If a radially deformable shielding sleeve is used to fit cables, then weight is reduced, but shielding properties deteriorate when expanded to cover connectors
Solution Approach 1:
The shielding sleeve is divided into two functional segments: a first portion with higher metal yarn content optimized for electromagnetic shielding when covering connectors, and a second portion with lower metal yarn content optimized for radial expansion and cable fitting. This segmentation allows each segment to perform its specific function effectively without compromising overall performance.
Solution Approach 2:
Different portions of the sleeve have different material compositions tailored to their specific functions. The first portion (for connector coverage) has higher metal content for shielding, while the second portion (for cable coverage) has lower metal content for flexibility and expansion, creating local quality variations that optimize overall system performance.
3Reliability
If a shielding sleeve is sized to cover the connector, then connector protection is ensured, but excessive material is used for cable protection increasing weight
Solution Approach 1:
The sleeve is segmented into a first portion for connector coverage and a second portion for cable coverage, allowing each to be optimized independently. The transition zone between segments enables the sleeve to adapt to both connector and cable dimensions without requiring excessive material throughout the entire length.
Solution Approach 2:
The sleeve incorporates radial expansion capability through plastic yarns, allowing it to dynamically adjust its diameter. This enables a single sleeve design to accommodate both the larger connector dimensions and the smaller cable dimensions, eliminating the need for oversized sleeves and reducing overall material usage.
4Adaptability or versatility
If the sleeve is expanded to cover the connector, then connector coverage is achieved, but mechanical protection capability decreases due to large openings
Solution Approach 1:
The composite textile structure combining metal and plastic yarns maintains structural integrity during radial expansion. The plastic yarns provide the expansion mechanism while the metal yarns maintain sufficient density and continuity to provide both electromagnetic shielding and mechanical protection even in the expanded state.
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 dual-textile sleeve system effectively protects electric cables from mechanical and electromagnetic interference, reduces weight, and simplifies handling by ensuring consistent shielding and mechanical protection across different states, meeting industry standards for electromagnetic compatibility.
Implementation Method 1
said shielding device comprises a first electrically conductive, in particular at least partially annular, securing area in which the rear part of the connecting sleeve and the front part of the protective sleeve are at least partly secured
Data Source
AI summary
The present invention relates to an electromagnetic shielding device including at least one hollow protective textile sleeve having a main rest diameter D1 and an interior volume configured to receive one or several elongated element(s), and at least one hollow connecting textile sleeve having a rest diameter D2, D2 greater than Dl. The protective textile sleeve includes a substantially annular front part having a front open end, the connecting textile sleeve includes a substantially annular rear part having a rear open end, and the shielding device includes a first electrically conductive securing area in which the rear part of the connecting sleeve and the front part of the protective sleeve are at least partly secured.