Universal Cable Ground Clamp Assembly for Shielded Cables

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Solution Overview

Problem

Existing cable grounding technologies face challenges in effectively grounding cables with conductive shields of varying sizes and configurations, as they often require custom solutions for different diameter dimensions and whether the shield is insulated or bare, leading to inefficiencies in installation and contact.

Innovation Solution

A modular ground clamp assembly comprising interlocking clamp members of varying dimensions, with a conductive strip and resilient elements, that can be adapted for different cable sizes and shield configurations, ensuring secure engagement and grounding by piercing the insulation to contact the shield.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If custom grounding solutions are used for different cable diameters and shield configurations, then grounding reliability is improved, but device complexity and installation time increase

Engineering Contradiction:
Improvegrounding reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The clamp assembly is designed with adjustable components that allow a single device to accommodate multiple cable diameters and shield configurations. The clamp members can be positioned at different locations along the cable, and the conductive element can engage with both insulated and bare shields, making one device serve multiple grounding functions that previously required custom solutions.

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

2Reliability

If custom grounding solutions are used for different cable configurations, then grounding reliability is improved, but installation efficiency decreases

Engineering Contradiction:
Improvegrounding reliabilityVSAvoidinstallation efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The universal clamp assembly eliminates the need for installers to select from multiple custom-designed clamps for different cable types. The single adjustable device can be installed on various cable configurations using the same procedure, significantly reducing installation time and improving efficiency while maintaining reliable grounding contact.

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

3Device complexity

If a single clamp assembly design is used for all cable sizes, then device complexity is reduced, but grounding reliability deteriorates

Engineering Contradiction:
Improvedevice complexityVSAvoidgrounding reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The clamp assembly incorporates adjustable and movable components that allow the same basic design to adapt dynamically to different cable sizes. The clamp members can be repositioned along the cable length, and the conductive element can be adjusted to make proper contact with the shield regardless of cable diameter, maintaining grounding reliability without requiring multiple fixed designs.

Inventive Principle:
Principle #15Dynamics

4Reliability

If multiple custom clamp designs are created for different cables, then grounding contact quality is improved, but manufacturing cost and time increase

Engineering Contradiction:
Improvegrounding contact qualityVSAvoidmanufacturing efficiency
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

Instead of manufacturing multiple custom clamp designs for different cable types, the invention uses a single universal clamp design with adjustable features. This dramatically reduces manufacturing complexity and cost while maintaining proper grounding contact quality across all cable configurations through the adjustable positioning and engagement mechanisms.

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

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 modular clamp assembly provides a universal solution for grounding cables of various sizes and configurations, ensuring reliable and efficient grounding by securely engaging with both insulated and bare shield cables, facilitating easy installation and effective electrical connection.

Implementation Method 1

resilient elements, that can be adapted for different cable sizes and shield configurations, ensuring secure engagement and grounding by piercing the insulation to contact the shield

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS8755664B2Cable ground clamp assembly
Publication Date: 2014.06.17 HUBBELL POWER SYSTEMS INC
  • US8755664B2 patent drawing
  • US8755664B2 patent drawing
  • US8755664B2 patent drawing

AI summary

A grounding clamp assembly for a cable having a spiral metal shield employs a first clamp and a second clamp. The clamps have concave cradles. The clamps are forced together around the cable. A biased contact element connects with a conductive strip extending from one of the clamps. The cable is captured between the cradles, and the contact element engages the shield.