Electric Cable End Slug Structure for Lower Conductor Resistance

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Solution Overview

Problem

Existing electric cables face challenges in maintaining low resistance to electric flow while minimizing the cross-sectional area of conductors, which can affect the quality of visual and audio signals transmitted.

Innovation Solution

Incorporating at least one metal slug at the end of the electric cable, where neutral and live wires extend around or make contact with the slug, utilizing multiple layers of insulation or shielding with varying cross-sectional areas to ensure efficient electrical connection without increasing resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the cross-sectional area of conductors is decreased to minimize cable size, then the cable becomes more compact and easier to handle, but the resistance to electric flow increases

Engineering Contradiction:
Improvecross-sectional area of conductorsVSAvoidresistance to electric flow
Core Design Contradiction:
Area of stationary objectVSReliability

Solution Approach 1:

The cable is divided into multiple individual conductors, each with its own insulation layer. This segmentation allows each conductor to be optimized for electrical performance while the overall cable structure achieves compactness through efficient packing of multiple smaller conductors rather than fewer larger ones.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple layers of insulation and shielding are nested around each conductor, with conductors themselves nested within the cable structure. This nested arrangement maximizes the use of space, allowing compact cable design while maintaining proper insulation distances and electrical properties for low resistance.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If multiple layers of insulation and shielding are added to protect conductors, then the protective capability and signal quality improve, but the cable diameter and complexity increase

Engineering Contradiction:
Improveprotective capabilityVSAvoidcable diameter
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

Different layers of insulation and shielding are applied to different conductors based on their specific electrical requirements. Critical signal conductors receive enhanced shielding and insulation, while less sensitive conductors have simpler protection, optimizing the balance between protection and cable size.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

Multiple materials with different properties (dielectric insulation, metallic shielding, outer jacket materials) are combined in layered structures. Each material is selected for its specific function, creating a composite cable structure that achieves maximum protection with minimum thickness.

Inventive Principle:
Principle #40Composite materials

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 effectively decreases the resistance of the electric cable despite a decrease in the cross-sectional area of the conductors, enhancing the quality of images and sounds produced by visual or audio devices.

Implementation Method 1

at least one piece of metal or metal slug at an end of the cable, wherein the neutral wire or wires and the live wire or wires extend around the piece or slug of metal

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS20240221977A1Electric Cable
Publication Date: 2024.07.04 DOSTAL LUBOMIR
  • US20240221977A1 patent drawing
  • US20240221977A1 patent drawing
  • US20240221977A1 patent drawing

AI summary

An improved electric cable is disclosed herein. The resistance of the electric cable of the present disclosure is surprisingly decreased despite a reduction in the cross-sectional area of the conductor when at least one metal slug is positioned at an end of the cable. Conductor wires, which may or may not be individually insulated, may extend around a metal slug or through an aperture of the slug. In combination with at least one metal slug, the cross-sectional area of individual wires or the amount of wires within a stranded wire cable may be substantially reduced without seeing an expected proportionate increase in electrical resistance, and surprisingly, a decrease in resistance may be observed.