Shield Contact Spring Segmentation for Cable Shielding
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Solution Overview
Problem
Existing plug connections with shield contact springs lack durability and effective shielding, particularly for high-frequency signals, due to the simplicity and material inefficiency of the metal ring designs in prior art.
Innovation Solution
A shield contact spring with radially circumferential outer edges and connecting webs, featuring spring bars and gaps that enhance elasticity, contact force, and tolerance compensation, while reducing material usage and improving assembly simplicity through coaxial arrangement and stamping/bending production methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple metal ring is used for shield contact, then the structure is simple, but the durability and contacting reliability are insufficient
Solution Approach 1:
The shield contact spring is segmented into multiple connecting webs (at least three) radially distributed around the cable axis, replacing the simple metal ring with a segmented structure that provides both mechanical resilience and reliable electrical contact while maintaining structural simplicity
Solution Approach 2:
The shield contact spring incorporates elastic resilience through its connecting webs and spring bars, transforming the static metal ring into a dynamic component that can adapt to assembly tolerances and maintain reliable contact under varying mechanical conditions
2Object-affected harmful factors
If a continuous shield structure is used, then shielding effectiveness is improved, but material usage increases and manufacturing complexity rises
Solution Approach 1:
The continuous shield is segmented into discrete connecting webs with gaps between them, reducing material usage while maintaining shielding effectiveness through the strategic arrangement of these segments around the cable perimeter
Solution Approach 2:
The shield contact spring applies shielding locally through radially distributed connecting webs that make contact at multiple points around the cable, providing effective shielding without requiring a complete continuous ring structure
3Loss of substance
If gaps are introduced in the shield contact spring to reduce material, then material usage decreases, but shielding effectiveness may be compromised
Solution Approach 1:
The shield contact spring transitions from a two-dimensional planar ring to a three-dimensional radially distributed structure with gaps, using the radial dimension to maintain shielding effectiveness while reducing material through strategic gap placement
Solution Approach 2:
The shield contact spring combines conducting material for electrical contact with non-conducting material for the web structure, creating a composite that provides both shielding functionality and mechanical resilience with reduced material usage
4Force
If spring bars are added to increase contact force, then contact force improves, but device complexity increases
Solution Approach 1:
The spring bars are merged with the connecting webs to form an integrated shield contact spring structure, increasing contact force while avoiding the complexity of separate components through unified design
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 improved durability, enhanced shielding effectiveness, and reduced material costs by ensuring high-frequency signal isolation and mechanical stability, while simplifying assembly and production.
Implementation Method 1
the shield contact spring has an elasticity which has an advantageous effect on the contacting of the two shields of the cables
Implementation Method 2
high-frequency signals cannot pass through the gaps can enter or come out in the direction of the electrical conductors or from these to the outside
Data Source
Figure 1~3
AI summary
Plug connection (1) with a shield contact spring (6), wherein the shield contact spring (6) is suitable and constructed to establish an electrical connection between a plug connector (2) and a mating plug connector (3) for shielding purposes, characterised in that the shield contact spring comprises a first and second (6) radially circumferential outer edge (9, 10), a plurality of connecting webs (8) being arranged between the edges (9, 10).