Circuit Board Connector Ground Terminal Placement
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Solution Overview
Problem
Conventional circuit board electrical connectors have limited flexibility in arranging and positioning ground terminals, making it difficult to improve grounding and control electrical characteristics according to signal speed.
Innovation Solution
The design features a housing with a groove for signal terminals at the front and ground terminals at the rear, allowing for arbitrary placement and number of ground terminals without reducing the number of signal terminals, along with a shielding plate for enhanced strength and shielding effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the ground terminal is provided adjacent to the signal terminals at both ends in the arrangement direction, then the grounding structure is simplified, but the number and position of ground terminals are limited and cannot be optionally selected
Solution Approach 1:
The connector is divided into a front portion for signal terminals and a rear portion for ground terminals. This segmentation allows ground terminals to be independently arranged at different positions without being constrained by signal terminal locations, enabling flexible grounding configurations while maintaining manufacturing simplicity.
Solution Approach 2:
The patent transitions from a one-dimensional arrangement where ground terminals are only at the ends to a multi-position arrangement along the arrangement direction. By utilizing the longitudinal dimension of the connector, ground terminals can be positioned at multiple locations (front, middle, rear) to match signal terminal positions, providing design flexibility without complicating the grounding structure.
2Reliability
If the number of ground terminals is increased to improve grounding, then the grounding performance is improved, but the device complexity increases
Solution Approach 1:
The rear portion of the housing serves multiple functions: it provides structural support, defines the arrangement of ground terminals, and enables flexible positioning of ground terminals at different locations. This multi-functionality allows increased ground terminal count for improved grounding without proportionally increasing device complexity.
Solution Approach 2:
The patent provides a flexible framework where the number and positions of ground terminals can be dynamically adjusted according to design requirements. The housing structure accommodates varying configurations of ground terminals at the rear portion, allowing optimization of grounding performance without fixed structural constraints that would increase complexity.
3Adaptability or versatility
If signal terminals are removed to arrange ground terminals, then ground terminal placement flexibility is improved, but the number of signal terminals is reduced
Solution Approach 1:
The connector is segmented into a front portion dedicated to signal terminals and a rear portion dedicated to ground terminals. This spatial segmentation allows both signal terminals and ground terminals to coexist without conflict, enabling flexible ground terminal placement in the rear portion while preserving all signal terminals in the front portion.
Solution Approach 2:
The patent utilizes the longitudinal dimension of the connector to separate signal and ground terminal arrangements. By placing ground terminals at the rear portion along the arrangement direction, the design achieves ground terminal flexibility without occupying the spatial positions of signal terminals, thus maintaining the full complement of signal terminals.
Data Source
AI summary
An electrical circuit board connector includes a housing made of an electrical insulating material; a groove formed in the housing for receiving a flat conductive member from a rear side of the housing; a signal terminal arranged at a front side of the housing; a ground terminal disposed at a position closer to the rear side relative to the signal terminal; and a pressing member supported to be movable. The signal terminal includes a contact arm, a first contact section for contacting with a circuit section of the flat conductive member, and a connecting section protruding outside the housing. The ground terminal includes a second contact section for contacting with a ground plate of the flat conductive member. When the pressing member moves, the pressing member presses the flat conductive member to the first contact section and the second contact section.