Crimp Assembly Retention Shoulder for Shielded Cable Stability

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Solution Overview

Problem

Shielded electrical cables with high-voltage power transmission experience induction currents and external mechanical influences that impair functionality, necessitating effective electrical and mechanical contact solutions to maintain performance.

Innovation Solution

A crimp assembly comprising an anvil bushing with a retention shoulder and a compression sleeve, where the sleeve is compressed around the anvil bushing to securely contact and stabilize the conductive component of the cable, providing both electrical and mechanical stability through a form-fit mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional crimp connection is used for shielded electrical cables with high-voltage power transmission, then the cable can transmit power, but induction currents impair functionality and external mechanical influences can damage the connection

Engineering Contradiction:

Improvefunctionality of shielded electrical cableVSAvoidinduction currents and external mechanical influences

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The anvil bushing is segmented into multiple functional zones: a retention shoulder for mechanical support, a crimping section for electrical contact, and a flange section for positioning. This segmentation allows each section to address specific harmful factors independently, improving overall reliability against induction currents and mechanical influences

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The retention shoulder is pre-formed on the anvil bushing to provide preliminary mechanical support and positioning for the conductive component before crimping occurs. This preliminary action ensures proper alignment and stress distribution, preventing damage from external mechanical influences during the crimping process

Inventive Principle:

Principle #10Preliminary action

2Stability of the object's composition

If the compression sleeve inner diameter is smaller to tightly contact the anvil bushing, then mechanical stability improves, but electrical contact reliability may be compromised

Engineering Contradiction:

Improvemechanical stability of crimp connectionVSAvoidelectrical contact reliability

Core Design Contradiction:

Stability of the object's compositionVSReliability

Solution Approach 1:

The compression sleeve is designed with different functional zones: a first section with a smaller inner diameter for tight mechanical contact with the anvil bushing body, and a second section with a larger inner diameter to accommodate the conductive component (shield braid) for reliable electrical contact. This local quality differentiation resolves the contradiction between mechanical stability and electrical reliability

Inventive Principle:

Principle #3Local quality

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 crimp assembly ensures reliable electrical contact and enhanced mechanical stability, effectively addressing induction currents and external forces, thereby maintaining the functionality of shielded electrical cables.

Implementation Method 1

securely contact and stabilize the conductive component of the cable, providing both electrical and mechanical stability through a form-fit mechanism

Methodology Applied

Scientific EffectForm-fit mechanism:

Implementation Method 2

A crimp assembly for electrically contacting a conductive component of an electrical cable

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS11431113B2Crimp connection and crimp method for a crimp assembly with at least one retention shoulder

Publication Date: 2022.08.30 TE CONNECTIVITY GERMANY GMBH

AI summary

A crimp assembly for electrically contacting a conductive component of an electrical cable includes an anvil bushing and a compression sleeve. The anvil bushing has a retention shoulder extending circumferentially on an outer peripheral surface of the anvil bushing and supporting a section of the conductive component. The compression sleeve has an inner diameter larger than an outer diameter of the retention shoulder.