Wire Harness Shield Electrical Connection
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Solution Overview
Problem
Wire harnesses with both collective and individual shield members face a risk of decreased shield performance due to lack of electrical connection between these components.
Innovation Solution
A wire harness design featuring tubular, braided metal individual shields and a flexible collective shield with an electrical connection mechanism, including an inner and outer connection member, ensures the collective and individual shields are electrically connected, maintaining shield performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If both collective shield member and individual shield members are used in a wire harness, then electromagnetic shielding coverage is improved, but shield performance decreases when the shield members are not electrically connected to each other
Solution Approach 1:
The individual shield members are nested within the collective shield member, creating a hierarchical shielding structure where the collective shield provides outer-layer protection and individual shields provide inner-layer protection for specific wire bundles, maximizing shielding coverage while maintaining electrical connection
Solution Approach 2:
A connector is introduced as an intermediary component to electrically connect the collective shield member and individual shield members. The connector includes contact portions that establish electrical pathways between the overlapping shield members, ensuring continuous electrical connection and maintaining shield performance
2Reliability
If individual shield members are fitted into the collective shield member to ensure electrical connection, then shield performance is maintained, but the complexity of assembly increases
Solution Approach 1:
The individual shield members are designed to be fitted into the collective shield member in a nested configuration, where the individual shields form inner layers and the collective shield forms the outer layer. This nested arrangement naturally ensures electrical connection through overlap while maintaining a compact and organized structure
Solution Approach 2:
The overlapping configuration of individual and collective shields automatically provides electrical connection without requiring additional complex connection mechanisms. The shields serve themselves by establishing electrical contact through their geometric arrangement, simplifying the overall assembly process
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 electrical connection between collective and individual shields prevents a decrease in shield performance, ensuring reliable electromagnetic shielding even when components overlap.
Implementation Method 1
a plurality of flexible and conductive tubular individual shields individually covering and electromagnetically shielding the plurality of electric wires
Implementation Method 2
a connector configured to electrically connect the collective shield and the plurality of individual shields to each other
Data Source
AI summary
A wire harness includes a plurality of electric wires, a plurality of flexible and conductive tubular individual shields individually covering and electromagnetically shielding the plurality of electric wires, a flexible and conductive tubular collective shield collectively covering and electromagnetically shielding at least portions of the plurality of electric wires that are not covered by the individual shields, and a connector configured to electrically connect the collective shield and the plurality of individual shields to each other in a state in which the collective shield and the plurality of individual shields overlap each other.