Board Connector Ground Spring Layout for Multi-Point Shielding
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Solution Overview
Problem
Conventional board connectors experience deteriorated communication performance due to noise interference, particularly in high-speed communication scenarios, as the shell-side ground connecting portion is only provided on the upper surface of the shell.
Innovation Solution
A board connector design featuring a housing with a receptacle open forward, an outer conductor fixed to the housing through a rear wall, an insulating dielectric, and a ground spring connected to the outer conductor, which includes multiple enclosure connecting portions to provide stable and improved shielding by connecting to the enclosure at multiple points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shell-side ground connecting portion is provided only on the upper surface of the shell, then the connector structure is simple, but communication performance deteriorates due to noise interference
Solution Approach 1:
The ground spring extends in the depth direction (third dimension) of the connector to contact the enclosure at multiple positions, transforming a single-surface grounding approach into a multi-point three-dimensional grounding structure. This dimensional extension provides additional grounding paths that reduce noise interference and improve communication performance without complicating the overall connector structure.
2Object-affected harmful factors
If the ground spring contacts the enclosure at multiple positions, then shielding performance improves and noise is reduced, but the connector structure becomes more complex
Solution Approach 1:
The ground spring integrates multiple grounding contact positions along its length, combining several grounding functions into a single component. This merging approach provides multi-point shielding and noise reduction capabilities while avoiding the need for multiple separate grounding elements, thus reducing overall structural complexity.
Solution Approach 2:
The ground spring serves multiple functions simultaneously: it provides electrical grounding at multiple enclosure contact positions, establishes shielding, and reduces noise interference. This multi-functionality allows a single component to address several concerns that would otherwise require multiple separate elements, maintaining structural simplicity while improving performance.
Data Source
AI summary
A board connector of the present disclosure is to be mounted on a circuit board and provided with a housing including a receptacle open forward and a rear wall provided on a side opposite to a front end part where the receptacle is open, an outer conductor fixed to the housing through the rear wall, an insulating dielectric disposed inside the outer conductor, an inner conductor disposed inside the dielectric, and a ground spring to be connected to the outer conductor. The receptacle includes a first wall to be disposed on a side opposite to the circuit board, a second wall to be disposed on the side of the circuit board and a third wall coupling the first wall and the second wall.