Electrical Plug Shielding Vibration Absorption
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Solution Overview
Problem
Plug connections in vehicles experience premature failure due to vibration exposure, leading to increased transitional resistance and wear at the contacting points of shielding elements, which compromises the effectiveness of electromagnetic shielding.
Innovation Solution
An electrical shielding system featuring a first and second shielding element, where the second element includes a base body and a contacting body mechanically coupled via a flexible element, allowing for vibration absorption and decoupling of the contacting point from the rest of the shielding system, thereby preventing relative movements and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If shielding elements are rigidly connected to plug components, then mechanical stability is improved, but wear at contacting points increases due to vibration exposure
Solution Approach 1:
The second shielding element is divided into a base body and a contacting body that are movable relative to each other. The base body is rigidly connected to the plug component for stability, while the contacting body can move independently to accommodate vibrations without transmitting stress to the contacting point.
Solution Approach 2:
A flexible element is introduced as an intermediary between the base body and the contacting body. This flexible element absorbs vibrations and relative movements, protecting the contacting point from wear while maintaining the mechanical connection to the plug component.
2Reliability
If shielding elements are rigidly connected to each other, then electrical connection stability is improved, but relative movements cause increased transitional resistance
Solution Approach 1:
The contacting body is designed to be movable relative to the base body, allowing dynamic adjustment during vibration exposure. This movement capability enables the contacting point to maintain stable electrical contact despite external vibrations, preventing increased transitional resistance.
Solution Approach 2:
The flexible element changes its mechanical properties under vibration loads, allowing it to absorb and dampen relative movements. This parameter change enables the system to maintain electrical connection stability while accommodating vibrational stresses.
3Strength
If shielding elements are clamped together at contacting points, then mechanical connection is improved, but wear at clamping points leads to premature failure
Solution Approach 1:
The second shielding element is segmented into a base body and a contacting body that can move relative to each other. This segmentation allows the contacting body to absorb vibrations through movement rather than transmitting wear to the clamping point, thereby extending the shielding system's lifespan.
Solution Approach 2:
The flexible element changes its mechanical state under vibration loads, allowing it to accommodate relative movements between the base body and contacting body. This parameter change reduces stress concentration at the clamping point, preventing premature failure while maintaining connection strength.
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 flexible coupling mechanism effectively absorbs vibrations and reduces wear at the contacting points, enhancing the longevity and reliability of the shielding system by maintaining a stable electrical connection despite exposure to vibrations.
Implementation Method 1
The flexible element may be electrically conductive and/or may electrically couple the base body and the contacting body. In other words, the second shielding element is designed as two parts, the contacting point for the first shielding element being isolated from the base body and being connected to a flexible element. As a result, the contacting point is mechanically decoupled from the rest of the shielding. In this way, relative movements and thus premature wear of the contacting point may be prevented.
Data Source
AI summary
An electrical shielding system for an electrical plug connecting includes: a first shielding element; and a second shielding element. The first shielding element and the second shielding element are configured to be plugged into each other, so that the two shielding elements are mechanically and electrically connected. The second shielding element includes a base body and a contacting body which are movable in relation to each other. The electric shielding system further includes a flexible element via which the base body and the contacting body are mechanically coupled to each other.