Earthing Technique for Fence Panels

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Solution Overview

Problem

Fencing systems near electrical plants, potentially explosive environments, or high voltage power lines require effective electrical earthing to prevent harm from static or induction effects and accidental electrical contact, as conventional methods do not adequately address these risks.

Innovation Solution

An earth connector system for mesh fence panels, featuring conductive members in electrical contact with rods, secured by fasteners that can be clamped or welded, and connected to earthing conductors, ensuring secure and reliable electrical grounding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the conductive member is fixed to the rods using conventional methods, then the installation process is simple, but the electrical contact reliability is insufficient in high-risk environments

Engineering Contradiction:

Improveelectrical contact reliabilityVSAvoidfastening mechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the conductive member with the fastening mechanism into an integrated earth connector assembly. The conductive member is permanently attached to the fastener through welding or mechanical fixation, ensuring that electrical contact and mechanical fastening occur simultaneously as a single unit, thereby improving reliability without requiring separate installation steps

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The conductive member is pre-positioned and secured to the fastener before the entire assembly is installed onto the rod. This preliminary action ensures that the electrical contact path is established and secured in advance, preventing any potential gaps or poor contacts that might occur during final installation

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the protective material on the rods is removed to enhance electrical contact, then the electrical contact quality improves, but the corrosion resistance of the rods deteriorates

Engineering Contradiction:

Improveelectrical contact qualityVSAvoidcorrosion susceptibility

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies different treatments to different parts of the rod: the contact surface where the conductive member attaches is left bare or treated to ensure optimal electrical conductivity, while the remaining portions of the rod retain their protective coating for corrosion resistance. This local differentiation resolves the contradiction between electrical contact quality and corrosion protection

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The conductive member acts as an intermediary between the rod and the earthing system. It provides a dedicated electrical contact path that does not require removing the rod's protective coating, thereby maintaining both electrical contact quality and corrosion resistance simultaneously

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If the conductive member is designed to penetrate the protective material layer, then the electrical contact is direct and reliable, but the manufacturing precision requirements increase

Engineering Contradiction:

Improveelectrical contact reliabilityVSAvoidpenetration depth control

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The conductive member is designed with a self-penetrating feature such as a sharp edge or dome shape that automatically penetrates the protective material layer during installation. The penetration depth is controlled by the geometry of the conductive member itself rather than requiring precise external control, thereby achieving reliable electrical contact without increasing manufacturing precision requirements for the penetration process

Inventive Principle:

Principle #25Self-service

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 earth connector system effectively reduces the risk of electrical harm by providing a secure and reliable earthing mechanism for mesh fence panels, even in high-risk environments, by ensuring sound electrical contact and mechanical engagement with the fence rods and any metallic sheet material, thereby minimizing the likelihood of electrical hazards.

Implementation Method 1

the earth connector including at least one conductive member which is in electrical contact with at least two of the rods

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 2

the conductive member is shaped, e.g. with a sharp edge, so as to penetrate a layer of a pre-applied protective material

Methodology Applied

Scientific EffectMechanical penetration: Impact Force

Implementation Method 3

at least one fastener which is fixed to and which is in electrical contact with the at least one conductive member

Methodology Applied

Scientific EffectMechanical fastening: Mechanical Fastener

Implementation Method 4

the conductive member is welded to the rods

Methodology Applied

Scientific EffectWelding: Welding

Data Source

PatentUS11362446B2Earthing technique

Publication Date: 2022.06.14 COCHRANE STEEL PRODS

AI summary

An earth connector for a fence panel includes a member with a sharp edge which penetrates protective material on rods of the panel to come into electrical contact with at least two of the rods.