Shield Frame Electrical Connector EMI Management
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Solution Overview
Problem
Existing electrical connectors face challenges in effectively controlling electromagnetic interference (EMI) while exposing shield walls to the exterior, which can lead to short circuits with other electrical elements.
Innovation Solution
An electrical connector design featuring an insulative housing with passageways and windows, a shield frame with metallic shield walls and protrusions, and an insulative cover that protects spring contact portions from short circuits, utilizing a shield frame between the housing and cover to manage EMI by altering the resonance mode of electromagnetic waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If shield walls are exposed to the exterior to control electromagnetic interference, then EMI shielding effectiveness is improved, but short circuit risk with other electrical elements increases
Solution Approach 1:
The patent introduces an insulative cover as an intermediary component between the exposed shield walls and the external environment. This insulative material physically isolates the conductive shield walls from other electrical elements, preventing short circuits while maintaining the EMI shielding function. The insulative cover acts as a mediator that allows the shield walls to remain exposed for EMI control without creating safety hazards.
Solution Approach 2:
The patent employs an insulative cover that can be configured as a flexible protective layer surrounding or covering the exposed shield walls. This thin film or shell structure provides electrical insulation while allowing the shield walls to maintain their exposed configuration for effective EMI shielding. The flexible nature of this insulative layer allows it to conform to the shield wall geometry while providing continuous protection.
2Ease of operation
If spring portions of contacts are exposed outward for electrical connection, then electrical connectivity is improved, but susceptibility to external interference and short circuits increases
Solution Approach 1:
The insulative cover extends to cover the spring portions of the contacts, providing a flexible protective shell that maintains electrical connectivity while shielding against external interference. This insulative layer allows the spring contacts to remain exposed for connection purposes while protecting them from environmental factors and preventing unwanted electrical contact with surrounding elements.
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 design effectively reduces electromagnetic interference and prevents short circuits, enhancing the operational reliability of the electrical connector by isolating spring contact portions and modifying electromagnetic wave resonance.
Implementation Method 1
utilizing a shield frame between the housing and cover to manage EMI by altering the resonance mode of electromagnetic waves
Data Source
AI summary
An electrical connector includes an insulative housing having a number of walls formed with passageways thereof. An insulative cover defines a plurality of windows corresponding to the passageways. A shield frame has openings corresponding to the passageways and shield walls formed with the openings. A number of contacts are disposed in the passageways and have spring portions at upper portions. The shield frame is located between the insulative housing and the insulative cover. The spring portions of the contacts extend upwardly out of the openings and the windows.