Wire Harness Electromagnetic Noise Suppression Nanocrystalline Core
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Solution Overview
Problem
The ferrite core used in existing wire harnesses for electromagnetic noise suppression is large in size and mass, limiting the degrees of freedom in routing layout and handling properties.
Innovation Solution
A wire harness with an electromagnetic wave suppression member comprising a restriction member with a harder inner wall section and an annular magnetic core made of nanocrystalline soft magnetic material, which covers the electric wires and is designed to be compact and lightweight, preventing external stress on the magnetic core.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a ferrite core is used as a magnetic core to reduce electromagnetic noise, then electromagnetic noise suppression is improved, but the mass and size of the wire harness increase
Solution Approach 1:
The patent changes the material parameter of the magnetic core from conventional ferrite to nanocrystalline soft magnetic material. This material substitution fundamentally alters the magnetic properties, achieving superior noise suppression performance with significantly reduced mass and size, directly resolving the contradiction between electromagnetic noise suppression and weight reduction.
Solution Approach 2:
The patent employs nanocrystalline soft magnetic material, which is a composite material with specific microstructure characteristics. This composite material combines the benefits of high magnetic permeability and low core loss, enabling effective electromagnetic noise suppression while maintaining a compact and lightweight form factor.
2Object-affected harmful factors
If a ferrite core is used as a magnetic core to reduce electromagnetic noise, then electromagnetic noise suppression is improved, but the degrees of freedom of routing layout are reduced
Solution Approach 1:
By changing the material parameter to nanocrystalline soft magnetic material, the physical dimensions of the magnetic core are dramatically reduced. This size reduction directly increases the routing layout flexibility, allowing the wire harness to be installed in more locations and configurations while maintaining electromagnetic noise suppression functionality.
3Object-affected harmful factors
If a ferrite core is used as a magnetic core to reduce electromagnetic noise, then electromagnetic noise suppression is improved, but the handling properties of the wire harness decrease
Solution Approach 1:
The material substitution to nanocrystalline soft magnetic material reduces the mass parameter of the magnetic core. This weight reduction directly improves the handling properties of the wire harness, making it easier for workers to install and manipulate during assembly operations.
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 reduces the mass and size of the wire harness while effectively suppressing electromagnetic noise, improving routing flexibility and handling properties.
Implementation Method 1
the magnetic core comprises a nanocrystalline soft magnetic material and is provided at a periphery of the inner wall section
Data Source
AI summary
A wire harness includes electric wires, and an electromagnetic wave suppression member provided at a periphery of the electric wires. The electromagnetic wave suppression member includes a restriction member and an annular magnetic core. The restriction member is provided so as to cover an outer periphery of the electric wires and includes an inner wall section that is harder than the electric wires. The magnetic core includes a nanocrystalline soft magnetic material and is provided at a periphery of the inner wall section.