Electrical Connector Housing Notches for Contact Impedance Control
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Solution Overview
Problem
Existing electrical connectors experience an excessive reduction in impedance at the contact position of terminals, leading to a degradation in signal transmission characteristics.
Innovation Solution
The electrical connector design incorporates a housing with alternating groove and partition portions, featuring notch portions in the partition areas corresponding to the contact points of the terminals, which reduces permittivity and increases impedance in these areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the housing includes continuous partition portions separating adjacent groove portions, then the structural integrity and terminal support are improved, but the impedance reduction at contact positions becomes excessive
Solution Approach 1:
The partition portions are segmented by introducing notch portions that divide the continuous partition into multiple sections. This segmentation maintains the overall structural support function while creating local impedance control zones at the contact positions, preventing excessive impedance reduction without compromising overall structural integrity
Solution Approach 2:
The notch portions are strategically positioned only at the contact positions between terminals and counterpart terminals, creating local variations in the partition structure. This local quality change allows impedance control precisely where needed (at contact interfaces) while maintaining the continuous partition structure in other areas to preserve structural integrity
2Reliability
If the partition portions are formed with notch portions at contact areas, then the impedance control and signal transmission are improved, but the manufacturing complexity increases
Solution Approach 1:
The notch portions are formed as integral features of the partition portions during the housing molding process, rather than as separate components requiring post-assembly. This preliminary action incorporates the impedance control function directly into the housing manufacturing step, avoiding additional manufacturing complexity despite the enhanced 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
This configuration effectively suppresses excessive impedance reduction, thereby enhancing signal transmission characteristics by maintaining optimal impedance levels across the connector interface.
Implementation Method 1
an area, which corresponds to the contact portion of the arm portion in the mating direction, of each of the plurality of partition portions is formed with a notch portion cut in the terminal arrangement direction
Data Source
AI summary
Provided is an electrical connector including: a plurality of signal terminals; and a housing, the plurality of signal terminals is arranged in a terminal arrangement direction perpendicular to a mating direction, each of the plurality of signal terminals includes an arm portion, and each of the arm portions includes a contact portion, the housing includes a terminal arrangement wall on which the arm portions are arranged, an arrangement surface side, on which the arm portions are arranged, of the terminal arrangement wall is alternately formed in the terminal arrangement direction with a plurality of accommodating groove portions capable of accommodating the arm portions respectively, and a plurality of partition portions that separates the adjacent accommodating groove portions, and an area, which corresponds to the contact portion in the mating direction, of each of the plurality of partition portions is formed with a notch portion cut in the terminal arrangement direction.