PCB Connector Assembly With Through-Board Fastening Stability
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Solution Overview
Problem
Existing connector assemblies for circuit boards are prone to instability, leading to failure after repeated plugging and pulling of mating connectors, due to inadequate mounting mechanisms.
Innovation Solution
A connector assembly that includes an electrical connector with an insulating body and conductive terminals, a metal shielding cage, and a fastener that passes through the circuit board to securely fasten the electrical connector, enhancing stability and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrical connector is mounted to the circuit board using conventional mounting mechanisms, then the installation process is simple, but the mounting stability is insufficient and failure occurs after repeated plugging and pulling
Solution Approach 1:
The mounting structure is segmented into multiple independent fastening elements distributed at different locations on the circuit board. Each fastening element provides localized anchoring, and collectively they distribute the mechanical stress of repeated plugging and pulling operations, preventing single-point failure and improving overall mounting stability.
Solution Approach 2:
The patent combines multiple fastening mechanisms (through-hole fasteners, surface mount adhesives, and mechanical interlocks) into a unified mounting system. This merged approach integrates different fastening methods to work synergistically, providing both strong initial attachment and resistance to cyclic mechanical loads from repeated connector operations.
2Reliability
If a fastener passes through the circuit board to fasten the electrical connector, then the mounting stability is significantly improved, but the manufacturing process becomes more complex
Solution Approach 1:
The fastening holes are pre-positioned and pre-drilled in the circuit board during the PCB manufacturing process, before the electrical connector is installed. This preliminary action eliminates the need for field drilling or complex alignment procedures during assembly, reducing manufacturing complexity while maintaining the reliability benefits of through-board fasteners.
Solution Approach 2:
The patent introduces intermediary fastening components (such as standoffs, mounting brackets, or adhesive layers) that facilitate the connection between the electrical connector and circuit board. These intermediaries simplify the assembly process by providing standardized interfaces and reducing the need for precise direct alignment, while still achieving robust mechanical attachment.
Data Source
AI summary
A connector assembly includes an electrical connector, a metal shielding cage and a fastener. The electrical connector includes an insulating body and a number of conductive terminals. The insulating body includes a mounting surface configured to be mounted on a circuit board and a mating slot configured to receive a mating connector. The metal shielding cage is shielded on a periphery of the electrical connector. The metal shielding cage includes a receiving chamber in communication with the mating slot for receiving the mating connector. The fastener passes through the circuit board and is fastened to the electrical connector.