Flexible Cable Armor Layout for Cut-Resistant Theft Deterrence
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Solution Overview
Problem
Existing electric vehicle charging cables are vulnerable to theft due to their susceptibility to cutting by common tools, posing safety risks and operational disruptions, and existing protective solutions are either costly, inflexible, or difficult to retrofit.
Innovation Solution
A flexible anti-theft protection system comprising elongate flexible armor elements and compressible guide-channel bands, which include hardened metal strips and aircraft cable elements, arranged circumferentially around the cable to provide cut resistance while maintaining flexibility, with optional visual deterrents and tamper-indication features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rigid conduit enclosures or armored cables are used to protect against cutting, then cut resistance is improved, but cable flexibility and ease of installation deteriorate
Solution Approach 1:
The protective system is divided into discrete modular components: individual armor elements (hardened steel strips, aircraft cable elements) spaced along the cable length, and separate compressible guide-channel bands that secure these elements. This segmentation allows the protective features to be distributed rather than continuous, preserving cable flexibility while providing cut resistance at critical points.
Solution Approach 2:
The protection system applies armor elements and guide-channel bands at specific locations along the cable rather than uniformly throughout. The compressible guide-channel bands are positioned at intervals to secure armor elements where needed, providing localized reinforcement that maintains overall cable flexibility and range of motion.
2Strength
If integrated armored cables are used, then cut resistance is improved, but cable weight and manufacturing complexity increase
Solution Approach 1:
Rather than using continuous integrated armoring throughout the entire cable length, the invention employs discrete armor elements (hardened steel strips, aircraft cable elements) spaced at intervals along the cable. This segmented approach provides cut resistance only where threats are most likely, significantly reducing overall weight compared to full-length armoring.
Solution Approach 2:
The protective system combines multiple material types in a composite structure: hardened steel strips for cut resistance, aircraft cable elements for tensile strength, and compressible guide-channel bands (fabric material with loop structures) for retention. This composite approach provides optimized protection-to-weight ratio by selecting materials with distinct mechanical properties for specific functions.
3Strength
If rigid enclosures are installed around existing cables, then cut resistance is improved, but installation complexity and cost increase
Solution Approach 1:
The compressible guide-channel bands are designed to be dynamically adjustable during installation. They can be compressed radially inward to accommodate cables of varying diameters and then secured in place, allowing the system to adapt to different cable sizes without requiring custom-fitted rigid enclosures for each installation scenario.
Solution Approach 2:
The compressible guide-channel bands change their physical state during installation: they are compressed radially inward to fit around the cable, then secured to maintain this compressed state. This parameter change (from uncompressed to compressed) enables a single modular component to accommodate various cable diameters, simplifying installation across different applications.
4Strength
If armor elements are rigidly fixed to the cable, then cut resistance is improved, but cable bending and flexibility are restricted
Solution Approach 1:
The protective system uses discrete armor elements secured by separate compressible guide-channel bands positioned at intervals along the cable, rather than continuous rigid fixation. This segmentation allows the cable to bend and flex between the secured points while maintaining cut resistance at the anchored locations.
Solution Approach 2:
The compressible guide-channel bands provide dynamic retention rather than rigid fixation. They secure armor elements circumferentially while permitting axial sliding movement of the armor elements relative to the cable, allowing the cable to bend and flex naturally during use while maintaining the protective armor positioning.
Data Source
AI summary
A flexible anti-theft protection system for an elongated cable is disclosed. The system comprises a plurality of elongate flexible armor elements disposed parallel to a longitudinal axis of the cable and arranged circumferentially around the cable. A plurality of compressible guide-channel bands are spaced along a length of the cable, each band comprising longitudinal guide channels configured to receive and maintain circumferential positioning of the armor elements. The guide-channel bands are configured to compress radially inward to accommodate cables of varying diameters. The invention also encompasses a method of installing the anti-theft protection system comprising positioning the plurality of elongate flexible armor elements circumferentially around the cable, securing the armor elements using compressible guide-channel bands having longitudinal guide channels that maintain circumferential positioning of the armor elements, and compressing each guide-channel band radially inward against the cable using a fastening member.