Shielded Inductor Assembly for Dense PCB Mounting
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Solution Overview
Problem
The challenge is to reduce the influence of the magnetic field generated by an inductor's conduction path on electronic components mounted on a circuit board while downsizing the overall size, as existing techniques may not effectively mitigate magnetic interference and size reduction simultaneously.
Innovation Solution
An inductor design featuring a magnetic core, a conduction path, a pedestal portion for supporting electronic components, and a shield portion on the circuit board to shield the magnetic field, along with a conductive cover and terminal holding functions, which increases mounting density and reduces magnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the second electronic component is mounted in the recessed portion of the inductor component, then the mounting area is reduced and the size of the mounting board is reduced, but the magnetic field generated from the inductor component may affect the second electronic component
Solution Approach 1:
A shield portion is introduced as an intermediary element between the inductor's conduction path and the mounted electronic components. This shield portion blocks the magnetic field generated by the conduction path from reaching the electronic components, thereby resolving the harmful magnetic field influence while maintaining the compact mounting configuration
2Productivity
If the inductor is placed on the circuit board with support portion to accommodate electronic components, then the mounting density of electronic components is increased and size is reduced, but the distance between conduction path and electronic components becomes short increasing magnetic field influence
Solution Approach 1:
The shield portion acts as a magnetic field barrier positioned between the conduction path and the electronic components mounted on the circuit board. This intermediary structure enables the inductor to be placed close to the circuit board for high mounting density while preventing magnetic field interference from reaching the sensitive electronic components
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 effectively reduces the magnetic field's influence on electronic components, allowing for increased mounting density and size reduction while maintaining the inductor's functionality.
Implementation Method 1
a shield portion that is provided on the circuit board side with respect to the magnetic core, and that shields a magnetic field generated by flow of electricity in the conduction path
Data Source
AI summary
An inductor includes: a magnetic core; a conduction path penetrating the magnetic core; a pedestal portion including a core holding portion that holds the magnetic core, and support portions that support, when placed on a circuit board, electronic components at a height at which the electronic components can be accommodated on the circuit board side with respect to the core holding portion; and a shield portion that is provided on the circuit board side with respect to the magnetic core, and that shields a magnetic field generated by flow of electricity in the conduction path.