Conductive Coating Shield for Gap-Free Magnetic Components
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional magnetic components with shielding face issues such as gaps between the shield and the inductor body due to material tolerances and complex shape fitting challenges, leading to incomplete coverage and potential damage during assembly, which affects electromagnetic interference management.
Innovation Solution
A magnetic component with an electrically conductive coating on its outer surface, insulated from pin portions and optionally grounded via a ground lug, forming a seamless shield that minimizes magnetic field leakage and can be easily applied to complex surfaces without mechanical processing, with a protective coating to prevent oxidation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a preformed housing is used to shield the inductor body, then shielding coverage is improved, but gaps occur between the housing and inductor body due to dimensional tolerances
Solution Approach 1:
The patent changes the physical state of the shielding material from rigid (preformed housing) to fluid (moldable material). The shielding material is designed to be moldable during assembly and then solidify to maintain the shielding structure, allowing it to conform to the inductor body's dimensions and eliminate gaps caused by tolerances
Solution Approach 2:
The patent employs a flexible molding approach where the shielding material can be deformed and molded around the inductor body during the assembly process. This flexibility allows the material to adapt to dimensional variations and create a tight fit, similar to how flexible shells conform to underlying structures
2Strength
If excessive pressure is applied to clamp the housing and inductor body, then connection strength is improved, but the inductor body may be damaged
Solution Approach 1:
The patent replaces the mechanical clamping system with a chemical bonding system. Instead of using external clamps or fasteners that require high mechanical pressure, the shielding material is designed to bond chemically or adhesively to the inductor body, achieving strong connection without excessive clamping force that could damage the inductor
3Area of stationary object
If the housing is processed into a complex shape to fit the inductor body, then coverage is improved, but manufacturing complexity increases
Solution Approach 1:
The shielding material is designed to self-form the required complex shape during the molding process. Rather than requiring pre-processing of a rigid housing into a complex geometry, the material automatically conforms to the inductor body's shape when molded, eliminating the need for complex machining or forming operations beforehand
4Ease of manufacture
If a gap is left at the corner to facilitate bending process, then ease of manufacture is improved, but shielding effectiveness deteriorates
Solution Approach 1:
The patent changes the physical state of the shielding material from rigid to moldable during assembly, allowing continuous bending and forming without gaps. The material maintains its moldable state during the forming process, enabling seamless corners and continuous shielding coverage, then solidifies to maintain this gap-free structure
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 a complete and effective shielding that minimizes magnetic field leakage, enhances electromagnetic interference management, and reduces manufacturing costs by eliminating the need for complex mechanical processing, while ensuring reliable grounding without extending the ground lug excessively.
Implementation Method 1
an electrically conductive coating disposed on a surface of the magnetic component... The electrically conductive coating disposed on the outer surface of the magnetic component serves as an entire and well-fitted shield... form a complete seamless shield, thereby minimizing the likelihood of magnetic field leakage
Implementation Method 2
The electrically conductive coating may be formed by spraying and coating a metal-based electrically conductive material
Data Source
AI summary
A magnetic component with shielding comprises: a magnetic component including a body and a plurality of pin portions; and an electrically conductive coating disposed on a surface of the magnetic component, wherein the electrically conductive coating is insulated from each of the pin portions. In the invention, the electrically conductive coating covers an outer surface of the magnetic component as a shield, such that the shield completely encloses the outer surface of the magnetic component without leaving any gaps. The magnetic component with shielding according to the invention offers manufacturing advantages over the conventional art in which a housing must be provided to serve as a shield.