Connector Shell Grounding Structure for Stable EMI Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional connectors suffer from deformation of small, thin contact shrapnels due to repeated plugging and unplugging, leading to poor electromagnetic wave shielding and elimination.
Innovation Solution
A shell grounding structure with a hooking plate on the shielding shell having wide and thick resisting elastic pieces that maintain their shape during repeated use, ensuring stable contact between the metal and shielding shells for effective electromagnetic wave shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple contact shrapnels are designed to be small and thin to form multi-point contacts, then the contact precision is improved, but the reliability deteriorates due to deformation after repeated plugging and unplugging
Solution Approach 1:
The patent changes the dimensional parameters of the resisting elastic pieces, making them wide and thick rather than small and thin. This parameter change allows the pieces to maintain their shape after repeated plugging and unplugging while still forming effective contact points, thus improving reliability without sacrificing contact precision
Solution Approach 2:
The hooking plate is segmented into multiple resisting elastic pieces that are distributed across the plate. Each piece independently forms a contact point with the metal shell, creating multiple contact points that ensure reliable electromagnetic wave shielding while maintaining the ability to withstand repeated mechanical stress
2Reliability
If the hooking plate has a large volume to accommodate wide and thick resisting elastic pieces, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent merges the resisting elastic pieces into a single integrated hooking plate structure. The multiple resisting elastic pieces are formed as one piece rather than separate components, which simplifies the overall structure and reduces assembly complexity while maintaining the reliability benefits of multiple contact points
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 structure maintains connector shape integrity and enhances electromagnetic wave shielding and elimination by preventing deformation of contact points, ensuring reliable electrical connections.
Implementation Method 1
the free end forms a resisting surface that is vertically attached to the surface of the metal shell of the board-end connector, and the board-end and wire-end connectors can maintain their original shape after repeated plugging and unplugging without deformation
Data Source
AI summary
A shell grounding structure of electrical connector includes: a board-end connector including a housing with a docking space, conductive terminals pierced on both sides of the docking space, and a metal shell assembled on the housing; and a wire-end connector including a holder base with a bottom inserting portion combined with the docking space, contact terminals piercing the inserting portion in contact with the respective conductive terminals and connected with respective electrical cables, and a shielding shell having a cable opening for the cables to be exposed and a hooking plate provided with resisting elastic pieces extending toward the metal shell and forming contact.