HF Circuit Board Connector With Movable EMI Gap Shielding
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Solution Overview
Problem
Existing circuit board plug-in connectors experience gaps due to component, positional, and assembly tolerances, leading to electromagnetic interference through these gaps when transmitting high-frequency signals.
Innovation Solution
A circuit board plug-in connector with a movable shielding element that bridges the gap between the connector and the circuit board, ensuring continuous electromagnetic shielding by being conductively connected to the ground potential.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the circuit board plug-in connector is connected to the printed circuit board in a position-controlled manner to minimize the gap, then the electromagnetic shielding effect is improved, but the assembly complexity and manufacturing precision requirements increase
Solution Approach 1:
The shielding element is designed to be movable relative to the connector housing, allowing it to dynamically adapt its position. During assembly, the shielding element can move to accommodate gaps caused by tolerances, automatically maintaining contact with the circuit board ground plane without requiring precise position control of the entire connector assembly.
Solution Approach 2:
The shielding function is segmented into a separate movable shielding element that can independently adjust its position relative to the connector housing. This separation allows the shielding element to compensate for assembly tolerances independently from the main connector positioning.
2Ease of manufacture
If component tolerances and manufacturing tolerances are accommodated with larger assembly tolerances, then the ease of assembly is improved, but the gap between the connector and circuit board increases leading to electromagnetic interference
Solution Approach 1:
The movable shielding element acts as an intermediary component between the connector housing and the circuit board ground plane. It fills the gap created by assembly tolerances and provides a continuous electromagnetic shield, preventing interference while allowing the main connector to be assembled with relaxed tolerance requirements.
Solution Approach 2:
The shielding element's position parameter is made variable rather than fixed. It can change its position relative to the connector housing to accommodate different gap sizes resulting from assembly tolerances, maintaining effective shielding across a range of assembly conditions.
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 movable shielding element maintains reliable electromagnetic shielding across various positional and assembly tolerances, minimizing interference and ensuring effective transmission of high-frequency signals.
Implementation Method 1
The plug face has a fixed shield for electromagnetic shielding of the electrical conductor. The circuit board interface has a shielding element, mounted movably relative to the electrical conductor and to the shield, for electromagnetic shielding of the electrical conductor.
Implementation Method 2
The shielding element bears against the circuit board, is electrically conductively connected to a ground potential of the circuit board and bridges a gap between the circuit board and the circuit board plug-in connector.
Data Source
AI summary
A circuit board plug-in connector for high-frequency signals, the circuit board plug-in connector has a plug face for reversible connection to a corresponding plug-in connector for high-frequency signals, and a circuit board interface for permanent connection to a circuit board. The plug face and the circuit board interface have at least one continuous electrically conductive electrical conductor. The plug face has a fixed shield for electromagnetic shielding of the electrical conductor, and the circuit board interface has a shielding element, mounted movably relative to the electrical conductor, for electromagnetic shielding of the electrical conductor.