Board-to-Board Connector Shielding via Frame Shell and Inner Plate
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Solution Overview
Problem
Existing board-to-board connectors suffer from electromagnetic leakage through side inspection windows, degrading the shielding effect and failing to provide excellent electromagnetic shielding performance, especially in downsized, high-density, and high-frequency electronic equipment.
Innovation Solution
The connector assembly design eliminates visible components like shells and solder from a side view, utilizing a rectangular frame-like shell with specific cutouts and protrusions to ensure complete shielding between boards without gaps, using a first and second connector with insulators, terminals, and shells that are soldered to ground patterns for effective electromagnetic shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If side inspection windows are provided in the conductive shell to allow visual observation of board connection end portions, then ease of operation (inspection) is improved, but electromagnetic shielding performance deteriorates due to electromagnetic leakage through the windows
Solution Approach 1:
A transparent or translucent insulating cover is introduced as an intermediary component that covers the side inspection windows. This cover allows visual observation of the board connection end portions through its transparent/translucent material while simultaneously blocking electromagnetic waves, thus preventing electromagnetic leakage. The insulating cover acts as a mediator that reconciles the conflicting requirements of inspection accessibility and electromagnetic shielding.
2Ease of operation
If the connector structure includes visible shells and components from the side view, then ease of inspection is improved, but electromagnetic shielding performance deteriorates due to gaps and openings
Solution Approach 1:
A thin insulating cover is used to cover the side inspection windows and connector structure. This thin film component maintains the visual inspection capability while providing continuous electromagnetic shielding without creating gaps or openings in the shielding structure.
3Object-affected harmful factors
If complete electromagnetic shielding is implemented by eliminating all openings and windows, then electromagnetic shielding performance is improved, but ease of inspection deteriorates as visual observation becomes impossible
Solution Approach 1:
The insulating cover is applied specifically to the side inspection window regions where electromagnetic leakage would occur, rather than covering the entire connector. This localized application maintains electromagnetic shielding at critical areas while preserving the inspection function. The cover has different properties (transparent/translucent) at the inspection areas compared to the rest of the connector structure.
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
This design achieves excellent electromagnetic shielding performance by ensuring that the space between boards is completely shielded from the outside, preventing electromagnetic leakage and enhancing the connector's ability to counter electromagnetic interference.
Implementation Method 1
a first conductive shell 50 which is an outer shell of the first connector 100 and has conductivity and a rectangular frame-like shape; a second conductive shell 80 which is an outer shell of the second connector 200 and has conductivity and a rectangular frame-like shape; an inner shielding plate 73 which is held by the second insulator 60
Data Source
AI summary
In a connector assembly in which a first connector that includes a first insulator, first terminals, and a first shell and is mounted on a first board and a second connector that includes a second insulator, second terminals, and a second shell and is mounted on a second board are connected with each other, a first ground pattern that has a frame-like shape and is formed on the first board is soldered to the first shell with first solder, and a second ground pattern that has a frame-like shape and is formed on the second board is soldered to the second shell with second solder. An inner space in which the first terminals and the second terminals are positioned is completely shielded from the outside without any gap.