Shield Contact Lamella Structure for Gap-Reduced Plug Shielding
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Solution Overview
Problem
Existing shield contact elements for high-voltage cables face challenges such as insufficient shielding due to gaps between contact lamellae, complex assembly requirements, and increased installation space needs, which affect the effectiveness of grounding and shielding.
Innovation Solution
A shield contact element with a cylindrical housing shell and axially extending contact lamellae, where the contact lamella has a contact foot in a recess of the housing shell to enhance electrical connection and reduce gaps, allowing for improved shielding without compromising flexibility or increasing assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If gaps are introduced between contact lamellae to ensure flexibility, then flexibility is improved, but shielding effectiveness deteriorates
Solution Approach 1:
The contact lamellae are extended in the axial direction with contact feet that reach into recesses, adding an axial dimension to the contact path. This axial extension compensates for the radial gaps between lamellae, maintaining shielding effectiveness while preserving flexibility through the segmented lamellae structure.
2Reliability
If bent contact lamellae are used to extend grounding path, then grounding coverage is improved, but installation space requirement increases
Solution Approach 1:
The grounding path is segmented into multiple contact lamellae with contact feet distributed along the axial direction. This segmentation allows the grounding function to be achieved through multiple discrete contact points rather than a single extended bent structure, reducing the axial space requirement while maintaining comprehensive grounding coverage.
3Reliability
If U-shaped bent contact lamellae are used to form conduction path, then conduction path is created, but eddy currents are generated degrading shielding
Solution Approach 1:
Instead of bending the contact lamellae in a U-shape that creates large current loops, the contact feet are extended axially into recesses to create direct radial contact paths. This inverts the traditional bent-lamella approach, creating shorter conduction paths that minimize eddy current generation while maintaining effective grounding.
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 provides effective shielding with reduced gaps and extended axial overlap, enhancing the grounding path and shielding performance while maintaining flexibility and simplifying assembly, thus addressing the limitations of existing designs.
Implementation Method 1
The contact lamella extends in the axial direction and creates an electrical connection between the housing shell and a shield for shielding the plug contact element. The contact lamella has a contact foot disposed in a recess formed in the housing shell to electrically contact the housing shell with the shield in the recess.
Data Source
AI summary
A shield contact element for shielding a plug connection includes a housing shell and a contact lamella. The housing shell has a cylindrical shape and extends in an axial direction for receiving a plug connector, the plug connector connecting to a plug contact element to form the plug connection. The contact lamella extends in the axial direction and creates an electrical connection between the housing shell and a shield for shielding the plug contact element. The contact lamella has a contact foot disposed in a recess formed in the housing shell to electrically contact the housing shell with the shield in the recess.