Electrical Plug Contact Shielding Transfer via Axial Spring Rim
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Solution Overview
Problem
Electrical plug contacts for motor vehicles face challenges such as high current requirements, vibrations, and impacts, which demand improved tightness, optimized installation space, and ease of preparation while minimizing material diversity and installation complexity.
Innovation Solution
A modular electrical plug contact system with a prefabricated housing and detachable linkage of electrical devices, featuring a continuous shield linkage, elastic shielding transfer means, and alignment detection for secure and efficient mounting, including a seal with annular beads and rib-groove configuration for correct orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a modular concept with multiple identical plug contacts in one housing is used, then installation space is optimized and mounting is simplified, but shielding transfer becomes problematic at the housing end faces
Solution Approach 1:
The shielding transfer means are arranged in the axial direction (plug-in direction S) rather than only in the radial direction, creating a three-dimensional shielding network that effectively blocks electromagnetic interference at the housing end faces while maintaining the modular compact design
2Object-affected harmful factors
If conventional shielding transfer is used at housing end faces, then electromagnetic interference is blocked, but the housing cannot be coded for differentiation of identical plug contacts
Solution Approach 1:
The housing is provided with local coding features in the form of ribs and grooves at specific positions, while the shielding transfer means are arranged in other areas, allowing both functions to coexist without interference - the ribs/grooves provide differentiation for identical plug contacts while the shielding transfer means maintain electromagnetic interference protection
3Manufacturing precision
If alignment detection means are added to recognize plug contact orientation, then correct mounting is ensured, but device complexity increases
Solution Approach 1:
The alignment detection means utilize visual differentiation through color coding or geometric pattern variations on the housing and plug contact surfaces, allowing installers to quickly identify correct orientation without complex mechanical or electronic detection systems - the coding is intuitive and requires no additional active components
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 enhanced shielding, secure mounting, and reduced material diversity, ensuring reliable operation under high current conditions and environmental stresses while simplifying installation and reducing errors.
Implementation Method 1
the especially elastically made shielding transfer means, especially peripherally closed, preferably made as a spring rim
Implementation Method 2
shielding transfer can take place in a simple, space-saving manner... by the arrangement of the shielding transfer means in the fastening section
Implementation Method 3
a seal which adjoins especially the periphery of the line jacket, forming a seal, for sealing of the fastening and/or contact-making section relative to the insulating section. For better sealing, the seal advantageously has at least two annular beads
Implementation Method 4
there is at least one rib for alignment of the electrical plug contact relative to at least one corresponding groove of the housing on the periphery of the insulating retainer
Data Source
AI summary
The present invention relates to an electrical plug contact, comprising—a line having an insulating section, a fastening section, and a contacting section,—a line shield that at least partially encloses the line,—a connector that electrically contacts the line at the end of the line in the contacting section,—an insulating retainer, which locks with the connector and which is arranged in the contacting and fastening sections, for insulating the connector from an electrically conductive housing, and—a secondary locking sleeve that at least partially surrounds the line in the fastening section and that can be fastened to the line, wherein shielding transfer means are provided in order to transfer the shielding from the line shield to the housing.