High Frequency Connector Grounding via Insert Molding
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Solution Overview
Problem
High frequency connectors face challenges in minimizing size while preventing crosstalk and electromagnetic noise due to increased terminal density, leading to signal loss and interference.
Innovation Solution
A high frequency connector design featuring a grounding conductor formed from a thin metal sheet with shielding plates and flat plates, fixed on the tongue plate portion of the insulator via insert molding, which maintains shielding effectiveness and prevents breaking of the surface, thereby reducing electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the quantity of terminals per unit area is increased to minimize connector size, then the overall volume of the connector is reduced, but the space between conductive terminals decreases leading to crosstalk and electromagnetic interference
Solution Approach 1:
The patent applies local quality by providing different levels of shielding for different terminal groups. The first group of terminals is provided with a first shielding component while the second group of terminals is provided with a second shielding component, allowing each terminal group to have tailored electromagnetic shielding properties according to its specific requirements, thereby reducing crosstalk while maintaining compact dimensions.
Solution Approach 2:
The patent segments the shielding structure into multiple independent shielding components (first shielding component and second shielding component) that can be separately applied to different terminal groups. This segmentation allows for optimized electromagnetic interference protection for each terminal group independently, addressing the crosstalk issue without requiring a complete redesign of the entire connector structure.
2Object-affected harmful factors
If shielding components are added to prevent crosstalk between terminals, then electromagnetic interference is reduced, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent employs thin film-like shielding components that can be easily integrated into the connector structure. These shielding components are designed to wrap around or cover the terminals in a flexible manner, providing effective electromagnetic shielding without adding significant structural complexity or manufacturing difficulty compared to rigid shielding structures.
3Object-generated harmful factors
If grounding conductors are used to transmit high frequency electronic noise, then noise is directed to the grounding circuit, but the grounding conductor surface may break during assembly leading to loss of shielding effectiveness
Solution Approach 1:
The patent merges the grounding conductor with the insulator body through insert molding, creating an integrated structure where the grounding conductor is embedded within the insulator. This integration ensures that the grounding conductor surface remains intact and maintains continuous electrical connection for shielding effectiveness, while still providing a pathway to transmit high frequency electronic noise to the grounding circuit.
Solution Approach 2:
The patent replaces traditional mechanical assembly methods (such as separate mounting or welding) with insert molding technology. This substitution eliminates the risk of surface breaking during assembly operations, as the grounding conductor is formed and integrated into the insulator in a single molding process, ensuring continuous shielding effectiveness while maintaining the noise transmission function.
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
The solution effectively minimizes electromagnetic interference and maintains shielding protection, ensuring reliable high frequency signal transmission with reduced noise and crosstalk, even with increased terminal density.
Implementation Method 1
Utilizing the grounding conductor of the high frequency connector, the high frequency electronic noise of the docking connector can be transmitted to the grounding circuit
Implementation Method 2
the insulator A is restrained by the shielding case C. By utilizing the characteristics of the shielding of electromagnetic waves by the metallic material of the shielding case C, the terminals B fixed on the insulator A are protected
Data Source
AI summary
A high frequency connector includes an insulator, a plurality of terminals, a shielding case and a grounding conductor. The insulator includes a tongue plate portion and a base portion. The terminals respectively have a contact portion arranged on a surface of the tongue plate portion. The contact portion is electrically connected with a docking connector. The shielding case covers outside the tongue plate portion and the base portion. A surface of the base portion is closer to the shielding case than the surface of the tongue plate portion. The grounding conductor is formed to a shielding plate and a first flat plate from a metal sheet. The shielding plate is at least partially fixed within the tongue plate portion. The first flat plate is at least partially exposed from the base portion. The shielding plate and the first flat plate are located in a region covered by the shielding case.