Connector Isolation Assembly for EMI Shielding and Creepage Distance
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Solution Overview
Problem
The existing electromagnetic isolation methods in connectors fail to adequately separate power and signal terminals, leading to electromagnetic interference and insufficient creepage distance, which results in short circuits and inadequate electrical insulation performance.
Innovation Solution
An electromagnetic isolation assembly comprising a metal isolation component and an electrical isolation component is inserted into a slit on a connector's insulator, increasing the creepage distance between power and signal terminals by protruding the electrical isolation component from the insulator's end face and using elastic contact arms and locking arms for secure fitment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a metal sheet is inserted into the insulation of the connector to separate power terminal and signal terminal electromagnetically, then electromagnetic interference is reduced, but the creepage distance between power terminal and signal terminal becomes too short causing short circuits
Solution Approach 1:
The isolation component is divided into two distinct parts: a metal isolation component for electromagnetic shielding and an electrical isolation component for creepage distance enhancement. This segmentation allows each component to perform its specific function optimally without compromising the other, resolving the contradiction between electromagnetic interference reduction and electrical insulation performance.
Solution Approach 2:
The isolation assembly combines metal material (for electromagnetic shielding) with electrical insulation material (for creepage distance). This composite structure integrates both electromagnetic interference reduction and electrical insulation functions in a single assembly, simultaneously addressing both requirements that were previously in conflict.
2Object-affected harmful factors
If the distance between the end of the metal sheet and the end of the signal terminal is reduced to improve electromagnetic isolation, then electromagnetic interference is minimized, but the creepage distance becomes insufficient leading to short circuits
Solution Approach 1:
The isolation structure is segmented into a metal isolation component that extends toward the power terminal for electromagnetic shielding, and an electrical isolation component that extends toward the signal terminal to increase creepage distance. This segmentation allows optimal positioning of each component to simultaneously minimize electromagnetic interference and maximize creepage distance.
Solution Approach 2:
The isolation assembly extends in multiple dimensions within the connector structure. The metal isolation component primarily extends in one dimension for electromagnetic shielding, while the electrical isolation component extends in another dimension to maximize the creepage path length, utilizing spatial dimensions to resolve the contradiction between electromagnetic isolation and creepage distance.
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 prevents short circuits and enhances the electrical insulation performance of the connector by increasing the creepage distance between power and signal terminals, ensuring compliance with industry standards.
Implementation Method 1
The metal isolation component is adapted to electromagnetically isolate a power terminal inserted in the insulator from a signal terminal inserted in the insulator
Data Source
AI summary
An electromagnetic isolation assembly adapted to be inserted into a slit of an insulator of a connector includes a metal isolation component and an electrical isolation component. The metal isolation component is adapted to electromagnetically isolate a power terminal inserted in the insulator from a signal terminal inserted in the insulator. The electrical isolation component is fixed to the metal isolation component and increases a creepage distance between the power terminal and the signal terminal.