Insulating Meter Jaw Guide for Watt-Hour Socket Safety

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Solution Overview

Problem

Thermal plastic meter jaw guides are prone to breaking under excessive force and can cause electrical shock or short circuits due to potential contact with 'hot' meter jaws during meter cover removal or installation, leading to safety and reliability issues.

Innovation Solution

A metal meter jaw guide combined with an insulating meter jaw guide overlay that secures and protects meter blades, preventing accidental contact and ensuring proper alignment and insulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If thermal plastic meter jaw guides are used, then insulation and safety protection are improved, but strength and reliability deteriorate at high temperature

Engineering Contradiction:
Improveelectrical shock protectionVSAvoidguide strength at high temperature
Core Design Contradiction:
Object-affected harmful factorsVSStrength

Solution Approach 1:

The meter jaw guide system is divided into two separate components: a metal meter jaw guide (1100) that provides structural strength and positioning, and an insulating meter jaw guide (1200) that provides electrical insulation and safety protection. This segmentation allows each component to specialize in its primary function without compromise.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The solution employs a composite structure combining metal and insulating materials in a coordinated assembly. The metal guide offers mechanical strength while the insulating guide provides electrical protection, creating a composite system that delivers both strength and insulation properties simultaneously.

Inventive Principle:
Principle #40Composite materials

2Object-affected harmful factors

If thermal plastic meter jaw guides are used, then insulation is improved, but device reliability deteriorates due to breaking under excessive force

Engineering Contradiction:
Improveelectrical shock protectionVSAvoidguide reliability under excessive force
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The meter jaw guide system is divided into two separate components: a metal meter jaw guide (1100) that provides structural strength and positioning, and an insulating meter jaw guide (1200) that provides electrical insulation and safety protection. This segmentation allows each component to specialize in its primary function without compromise.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The metal meter jaw guide acts as an intermediary structural support that bears mechanical loads and positioning stresses, protecting the insulating meter jaw guide from excessive force that would cause breaking while maintaining electrical insulation functionality.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Manufacturing precision

If metal meter jaw guides are used, then strength and alignment precision are improved, but electrical safety protection deteriorates

Engineering Contradiction:
Improvemeter blade alignmentVSAvoidelectrical shock risk
Core Design Contradiction:
Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The meter jaw guide system is divided into two separate components: a metal meter jaw guide (1100) that provides structural strength and positioning, and an insulating meter jaw guide (1200) that provides electrical insulation and safety protection. This segmentation allows each component to specialize in its primary function without compromise.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The solution employs a composite structure combining metal and insulating materials in a coordinated assembly. The metal guide offers mechanical strength while the insulating guide provides electrical protection, creating a composite system that delivers both strength and insulation properties simultaneously.

Inventive Principle:
Principle #40Composite materials

4Device complexity

If single material meter jaw guides are used, then device complexity is reduced, but functional performance deteriorates

Engineering Contradiction:
Improveguide structure complexityVSAvoiddual function performance
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The meter jaw guide system is divided into two separate components: a metal meter jaw guide (1100) that provides structural strength and positioning, and an insulating meter jaw guide (1200) that provides electrical insulation and safety protection. This segmentation allows each component to specialize in its primary function without compromise.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The combined meter jaw guide system achieves multi-functionality by integrating positioning, support, and electrical insulation functions into a coordinated two-component assembly, allowing the system to perform multiple functions that a single material guide could not achieve alone.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS7614908B2Insulating meter jaw guide for a watt-hour meter socket
Publication Date: 2009.11.10 SIEMENS INDUSTRY INC
  • US7614908B2 patent drawing
  • US7614908B2 patent drawing
  • US7614908B2 patent drawing

AI summary

The invention provides an insulating meter jaw guide featuring a loop belt, a retaining fastener, a meter blade receiving slot, and a cavity housing. The insulating meter jaw guide may be positioned on a meter jaw of watt-hour meter socket, effectively covering the receiving end of a meter jaw or a meter jaw assembly, therefore, protecting the meter jaw from accidental contact by a meter cover or the like.