Magnetic Element with Intermediate Core for High-Density Mounting

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Solution Overview

Problem

The challenge is to reduce the layout area of magnetic elements on a mounting substrate for high-density mounting while ensuring secure connection and efficient manufacturing, as existing configurations require significant space and intervals between elements.

Innovation Solution

A magnetic element configuration using a first and second core with flange portions and an intermediate core, forming a closed magnetic circuit, where the cross-sectional areas of the winding cores and intermediate core are optimized to reduce layout area and facilitate high-density mounting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If multiple inductance elements are disposed on a mounting substrate, then the functional requirements are met, but the mounting substrate becomes large due to the layout area requirement

Engineering Contradiction:
Improvenumber of inductance elementsVSAvoidmounting substrate area
Core Design Contradiction:
Quantity of substanceVSArea of stationary object

Solution Approach 1:

The patent combines multiple inductance elements into a single integrated magnetic element structure. The first and second inductance elements share common magnetic paths through the first and second common magnetic paths, allowing multiple functional units to occupy a reduced layout area while maintaining individual electrical characteristics.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The magnetic element structure serves multiple functions simultaneously: it provides separate inductance paths for multiple elements while sharing common magnetic flux paths, achieves high-density mounting capability, and maintains electrical isolation between elements through the insulating layer while reducing the overall footprint on the mounting substrate.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If mounting elements are kept at appropriate intervals to prevent damages during mounting work, then element reliability is maintained, but the layout area of inductance elements needs to be further reduced for high density mounting

Engineering Contradiction:
Improveelement reliabilityVSAvoidlayout area
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The patent merges multiple inductance elements into a single integrated structure where the first and second inductance elements share common magnetic paths and are mounted together as one unit. This eliminates the need for spacing intervals between separate elements while maintaining their individual functionality and reliability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The structure nests the first and second inductance elements within a shared magnetic circuit framework. The inductance elements are positioned adjacent to each other with their winding cores aligned, sharing common magnetic paths, which allows them to be mounted in close proximity without requiring protective spacing intervals.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Area of stationary object

If a common core is used to flow magnetic fluxes from multiple magnetic elements, then layout area is reduced, but the connection security between cores must be ensured

Engineering Contradiction:
Improvelayout areaVSAvoidconnection security
Core Design Contradiction:
Area of stationary objectVSReliability

Solution Approach 1:

The patent merges multiple magnetic elements into a unified magnetic circuit where the first and second inductance elements share common magnetic paths. The winding cores of both elements are integrally connected to the first and second common magnetic paths, ensuring secure magnetic flux flow while reducing layout area.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent employs curved or rounded corner designs in the magnetic core structure, particularly at the interfaces between winding cores and common magnetic paths. This curvature design ensures smooth magnetic flux transitions and secure mechanical connections, preventing flux leakage and maintaining connection integrity.

Inventive Principle:
Principle #14Spheroidality (Curvature)

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 layout area of magnetic elements, enables secure connection, and lowers manufacturing costs by using a common core to manage magnetic flux, allowing for efficient high-density mounting without increasing the size of the inductance element.

Implementation Method 1

an intermediate core to form a closed magnetic circuit which is disposed between the first core and the second core in a manner being integrally connected with the first core and the second core

Methodology Applied
Scientific EffectMagnetic flux: Magnetic Field

Implementation Method 2

a first core and a second core each of which has a winding core provided with a flange portion

Methodology Applied
Scientific EffectFerromagnetism: Ferromagnetism

Data Source

PatentUS7893807B2Magnetic element
Publication Date: 2011.02.22 SUMIDA CORP
  • US7893807B2 patent drawing
  • US7893807B2 patent drawing
  • US7893807B2 patent drawing

AI summary

A magnetic element including a first core and a second core each of which has a winding core provided with a flange portion having a flange surface at least at one end thereof; and an intermediate core to form a closed magnetic circuit which is disposed between said first core and said second core in a manner being integrally connected with said first core and said second core.