Coil Component With Interposed Magnetic Core Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing coil components face reliability issues due to exposed wires and reduced inductance caused by magnetic flux division when wires and substrates directly face each other, leading to compromised performance.
Innovation Solution
A coil component design featuring a drum-shaped magnetic core with a plate-like second magnetic core interposed between the substrate and winding core, eliminating direct wire-substrate contact and using a plate-like member to cover the core from the side, thereby enhancing reliability and inductance without the need for openings in the flange parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wires are exposed to connect to terminal electrodes, then connection is simplified, but reliability reduces
Solution Approach 1:
The patent introduces an insulating coating as an intermediary layer on the wires. This coating serves as a mediator that prevents direct contact between the wire and surrounding components while maintaining electrical connection functionality through terminal electrodes, thereby improving reliability without compromising connection simplicity
2Device complexity
If wires wound around the winding core part and mounting substrate directly face each other, then component structure is simplified, but reliability reduces
Solution Approach 1:
The patent positions the winding core part and mounting substrate in different spatial dimensions, specifically arranging them such that they do not directly face each other. This dimensional arrangement prevents direct wire-substrate contact while maintaining a compact overall structure, resolving the contradiction between structural simplicity and reliability
3Ease of operation
If openings are formed in the flange part of the magnetic core for wire connection, then wire connection is facilitated, but inductance reduces
Solution Approach 1:
The patent uses terminal electrodes as intermediaries to connect wires to the magnetic core assembly. Instead of forming openings in the flange part that would divide magnetic flux, the wires connect to terminal electrodes that are positioned on the flange surface, maintaining magnetic flux continuity while enabling wire connection
4Ease of operation
If terminal electrodes are arranged on flange parts for input/output connections, then electrical connection is achieved, but component height increases
Solution Approach 1:
The patent merges the terminal electrodes with the flange part structure, integrating the electrical connection function into the existing magnetic core assembly. This consolidation allows terminal electrodes to be arranged on the flange surface without adding significant height to the component, as they share the same spatial envelope as the flange 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
This configuration enhances reliability and inductance by preventing direct wire-substrate contact and reducing magnetic resistance, allowing for high inductance without increasing the component's height, while also simplifying handling and manufacturing.
Implementation Method 1
a plurality of openings are formed in the flange part of the drum-shaped magnetic core, and the wires are made to pass through the openings for connection to the terminal electrodes. The openings formed in the flange part of the magnetic core area each widened in a direction perpendicular to a magnetic flux flowing direction, so that many magnetic fluxes are divided to increase magnetic resistance
Implementation Method 2
capable of being mounted such that the second magnetic core is interposed between the mounting substrate and the winding core part
Data Source
AI summary
Disclosed herein is a coil component that includes: a first magnetic core extending in the first direction and around which the wires are wound; a second magnetic core covering the first magnetic core from one side in a third direction; first and second terminal electrodes connected respectively to one ends of the first and second wires; and third and fourth terminal electrodes connected respectively to other ends of the first and second wires. The first and second electrodes are arranged in the first direction along the first surface of the first magnetic core, and the third and fourth terminal electrodes are arranged in the first direction along the second surface of the first magnetic core.