Plug-In Connector Tapered Contact Geometry for Tilted Shielding
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Solution Overview
Problem
Existing electrical plug-in connections struggle to maintain reliable peripheral contact between external conductor contact elements, especially in tilted states, leading to impaired shielding and high-frequency transmission characteristics.
Innovation Solution
The electrical plug-in connection features a configuration where the inner surface of the external conductor contact element tapers oppositely to the plug-in direction, and the outer surface of the mating external conductor contact element tapers in the plug-in direction, allowing contact solely on a circular line, which maintains contact force with both axial and radial components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If axial contact pressure is increased to achieve reliable full-area contact, then contact reliability improves, but device complexity and risk of damage increase
Solution Approach 1:
The patent applies curvature by replacing flat contact surfaces with spherical contact surfaces. The first contact element has a spherical outer contact surface and the second contact element has a spherical inner contact surface, allowing contact to occur at a point or small area rather than requiring high pressure for full-area contact. This geometric transformation enables reliable contact with reduced axial pressure requirements.
2Ease of operation
If radial play is allowed for easy assembly, then ease of operation improves, but contact stability deteriorates due to tilting
Solution Approach 1:
The spherical contact surfaces automatically accommodate radial play and tilting movements while maintaining stable contact. The curved geometry allows the contact point to self-adjust within the spherical surfaces, preventing the tilting-induced instability that occurs with flat surfaces. This enables radial play for easy assembly without compromising contact stability.
Solution Approach 2:
The patent introduces dynamic adaptability through spherical contact surfaces that can self-adjust to tilting and radial movements. Rather than requiring rigid fixed-position contact, the spherical geometry allows the contact point to move dynamically within the spherical surfaces, maintaining stable electrical contact despite positional variations caused by assembly tolerances.
3Object-affected harmful factors
If full-area contact is implemented for optimum shielding, then shielding performance improves, but manufacturing precision requirements increase
Solution Approach 1:
The spherical contact surfaces reduce manufacturing precision requirements by transforming the contact geometry from flat surfaces requiring precise alignment to spherical surfaces where contact occurs at a point or small area. The curved geometry provides self-aligning characteristics that tolerate greater variations in manufacturing tolerances while still achieving effective shielding through maintained contact.
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 configuration ensures reliable all-round contacting and optimized shielding even in tilted states, while also allowing for higher contact pressure and reduced contact resistance due to scrubbing movements, thereby enhancing high-frequency transmission characteristics.
Implementation Method 1
an inner surface being configured in a plug-side end region of the external conductor contact element, which inner surface is rotationally symmetrical with respect to a longitudinal axis of the plug-in connector and has an internal diameter which tapers in a direction which is opposed to a plug-in direction of the plug-in connector, and an outer surface being configured in a plug-side end region of the mating external conductor contact element, which outer surface is rotationally symmetrical with respect to a longitudinal axis of the mating plug-in connector and has an external diameter which tapers in a plug-in direction of the mating plug-in connector
Implementation Method 2
the inner surface and the outer surface making contact solely on a circular line... maintains contact force with both axial and radial components
Implementation Method 3
reduced contact resistance due to scrubbing movements
Data Source
AI summary
An electrical plug-in connection having an electrical plug-in connector that has an external conductor contact element and a corresponding electrical mating plug-in connector that has a mating external conductor contact element. A plug-side end region of the external conductor contact element defines an inner surface that is rotationally symmetrical with a longitudinal axis L1 of the plug-in connector and the inner surface has an internal diameter which tapers in a direction opposite a plug-in direction S1 of the plug-in connector; and a plug-side end region of the mating external conductor contact element defines an outer surface that is rotationally symmetrical with a longitudinal axis U of the corresponding electrical mating plug-in connector and the outer surface has an external diameter which tapers in a plug-in direction S2 of the mating plug-in connector; and the inner surface and the outer surface make contact solely on a circular ling.