Flexible Cable Fastening System for Aeronautic EMI Shielding
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Solution Overview
Problem
Conventional cable supports in aircraft are rigid, leading to exposure of cables to external electromagnetic interferences in non-straight cable routes and require multiple serrated racks for cover maintenance, lacking flexibility and increasing weight.
Innovation Solution
A flexible cable-fastening system comprising a composite sheet with a metal core and hook-and-loop fastening means, such as Velcro, which can be used to enclose cables and extend over multiple profiles, providing continuous protection against electromagnetic interferences and reducing weight by using adhesive bonding or fixation lugs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rigid profiled structures are used for cable support, then mechanical strength and structural stability are improved, but flexibility and adaptability to non-straight cable routes deteriorate
Solution Approach 1:
The patent replaces rigid profiled structures with flexible cable supports made of elastomeric or thermoplastic materials that can bend and conform to non-straight cable routes while maintaining mechanical integrity through material selection and cross-sectional geometry design
Solution Approach 2:
The cable support system transitions from static rigid profiles to dynamic flexible structures that can adapt their shape to accommodate varying cable routes and installation requirements, improving versatility without sacrificing strength
2Reliability
If multiple serrated racks are used to maintain covers in channels, then cover fixation reliability is improved, but device complexity and weight increase
Solution Approach 1:
The patent extracts and eliminates the complex serrated rack system from the cable support structure, replacing it with simpler integrated retention mechanisms that achieve adequate cover fixation without the complexity and weight of multiple discrete serrated racks
Solution Approach 2:
The cable support structure integrates multiple functions including cable protection, EMI shielding, and cover retention into a single unified component, eliminating the need for separate serrated racks and reducing overall device complexity
3Manufacturing precision
If rigid cable supports are used, then manufacturing precision and structural stability are improved, but flexibility for complex cable routes deteriorates
Solution Approach 1:
The patent changes the physical parameters of the cable support by transitioning from rigid materials with fixed geometry to flexible materials with variable cross-sections, enabling the structure to maintain stability during manufacturing while adapting to complex routes during installation
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 flexible cable-fastening system effectively shields cables from electromagnetic interferences, reduces weight, and maintains cable protection over complex routes, while being easier to use and potentially cheaper than traditional systems.
Implementation Method 1
In order that the fastening system makes it possible to achieve a shield against electromagnetic interferences, the sheet used is advantageously a composite sheet provided with a metal core
Implementation Method 2
the fastening means of a longitudinal rim are provided either with loops or with hooks of a hook-and-loop fastening system
Implementation Method 3
the fastening system is fixed at the bottom of a housing by adhesive bonding
Data Source
AI summary
This cable-fastening system is intended to maintain cables (4) in a longitudinally extending housing (10) having an aperture through which cables (4) can be introduced into the housing (10).It has the form of a flexible sheet (16) of elongated shape, provided on its two longitudinal rims with fastening intended to cooperate with complementary fastening.A cable support according to the invention is provided with a metal profiled structure (2) having at least one housing (10) intended to receive cables (4) or similar components, and also with such a fastening system (16).