USB Connector Buckling Members for EMI Shielding
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Solution Overview
Problem
Conventional USB electrical connectors experience signal interference issues such as EMI and RFI, leading to reduced signal transmission quality.
Innovation Solution
The design incorporates a metal shell, insulation housing, upper-row and lower-row elastic terminals, and buckling members with a low-impedance grounding path, allowing for flexible insertion orientation and improved structural strength through soldering, which reduces electromagnetic and radio frequency interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional USB electrical connectors are used, then the device structure is simple, but signal interference such as EMI and RFI occurs resulting in reduced signal transmission quality
Solution Approach 1:
The patent changes the electrical parameters of the connector by implementing a low-impedance grounding path through specifically designed buckling members with optimized dimensions and material properties. The buckling members have controlled thickness and length parameters that create effective EMI/RFI shielding, transforming the grounding impedance from high to low, thereby improving signal transmission quality by reducing electromagnetic interference
Solution Approach 2:
The buckling members serve as intermediary elements between the signal terminals and the grounding system. These members act as intermediate grounding paths that mediate the electromagnetic field interactions, providing a controlled impedance pathway that shields sensitive signal lines from EMI/RFI while maintaining electrical connectivity
2Reliability
If the buckling members are designed with proper grounding path, then EMI and RFI are reduced, but the device complexity increases
Solution Approach 1:
The patent merges multiple functions into the buckling members: they serve as both mechanical retention elements (buckling mechanism) and electrical grounding paths simultaneously. This integration eliminates the need for separate grounding components, reducing overall device complexity while achieving EMI/RFI reduction through the low-impedance grounding path provided by the buckling members
3Adaptability or versatility
If the terminals are arranged in upper-row and lower-row configurations, then insertion orientation flexibility is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent employs asymmetric arrangement of upper-row and lower-row terminals with different positioning and configurations. This asymmetric design provides distinct insertion orientations that prevent incorrect plugging while maintaining manufacturing feasibility through standardized terminal components and modular insulation housing structures
Data Source
AI summary
An electrical plug connector includes an insulation housing, a metal shell and plural buckling members. The insulation housing includes an insertion cavity, plural lateral sides and plural assembling spaces. The insertion cavity is disposed at a front portion of the insulation housing. The lateral sides are disposed at two sides of the insulation housing. The assembling spaces are disposed at the lateral sides and communicate with the insertion cavity. The metal shell encloses the insulation housing. The buckling members are respectively disposed in the assembling spaces and each includes a arm portion, a hook portion and a soldering portion. The arm portion is disposed in the assembling portion, the hook portion is extended from a front portion of the arm portion toward the insertion cavity, and the soldering portion is extended from a rear portion of the arm portion and exposed out of the assembling space.