Coaxial Connector Housing Fixing Without EMI Leakage
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Solution Overview
Problem
Existing electrical connectors face challenges in holding the housing securely while maintaining improved Electromagnetic Interference (EMI) characteristics, as forming openings in the external conductor to prevent housing peeling can lead to signal leakage and deteriorated EMI performance.
Innovation Solution
The electrical connector design includes a housing that holds the ground and signal contacts in an insulated state, with a fixing portion that extends from the housing and interlocks with the grounding connection portion outside the fitting portion, effectively preventing housing peeling without forming openings that could compromise EMI characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If openings are formed in the external conductor to prevent housing peeling, then the housing holding reliability is improved, but signal leakage increases and EMI characteristics deteriorate
Solution Approach 1:
The patent divides the fixing function into two separate components: the housing structure and the dedicated fixing portion. The housing provides insulation and structural support, while the fixing portion (extending from the housing in a direction intersecting the signal connection portion) provides mechanical attachment to the grounding connection portion. This segmentation allows the housing to be securely fixed without requiring openings that would compromise EMI shielding.
Solution Approach 2:
The fixing portion extends from the housing in a direction that intersects the signal connection portion, utilizing a different spatial dimension for fixation. This orthogonal or intersecting arrangement allows the fixing portion to engage with the grounding connection portion outside the fitting portion without creating openings in the external conductor, thus maintaining EMI characteristics while achieving secure housing attachment.
2Reliability
If a fixing configuration is provided to prevent housing peeling, then the housing holding reliability is improved, but the device complexity increases due to additional structure
Solution Approach 1:
The housing serves multiple functions: it provides electrical insulation between conductors, maintains the structural integrity of the connector, and supports the fixing portion that attaches to the grounding connection portion. The fixing portion itself serves dual purposes by both securing the housing and providing a mounting structure for the signal contact assembly. This multi-functionality reduces the need for separate dedicated components.
Solution Approach 2:
The patent merges the fixing function with the housing structure by integrating the fixing portion as an extension of the housing. Rather than using a separate fixing mechanism or opening in the external conductor, the fixing portion is formed as part of the housing assembly, allowing it to engage with the grounding connection portion while maintaining the insulating properties of the housing material.
Data Source
AI summary
A receptacle connector includes a ground contact including a cylindrical fitting portion and a grounding connection portion connected to a substrate, a signal contact disposed in a manner of being surrounded by the fitting portion, a housing holding the ground contact and the signal contact in an insulated state, and a fixing portion fixing the housing to the ground contact. The signal contact has a central conductor and a signal connection portion extending in a manner of being drawn out from the central conductor and connected to a signal terminal portion. The fixing portion extends from the housing in a direction intersecting an extending direction of the signal connection portion and fixes the housing to the ground contact by being interlocked with the grounding connection portion outside the fitting portion.