Coil Apparatus Rear Wire Routing for Front Surface Shielding

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Solution Overview

Problem

Conventional coil apparatuses generate electromagnetic field radiation on the front surface side due to conductive wires, which is undesirable for the surrounding environment.

Innovation Solution

The coil apparatus design includes a base with a magnetic portion and a coil portion where the conductive wire is drawn out from the rear surface through specific passing regions, allowing the base to shield electromagnetic field radiation on the front surface side.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the conductive wire is drawn out from the front surface side of the base, then the connection is simple and direct, but electromagnetic field radiation is generated around the conductive wire on the front surface side

Engineering Contradiction:

Improvewire connection simplicityVSAvoidelectromagnetic field radiation

Core Design Contradiction:

Ease of manufactureVSObject-generated harmful factors

Solution Approach 1:

The conductive wire is drawn out from the rear surface side of the base instead of the front surface side, inverting the conventional wire exit position. This inversion allows the base to shield the conductive wire from the front surface, reducing electromagnetic field radiation on the front surface side while maintaining electrical connection functionality

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The base acts as an intermediary shielding structure between the conductive wire and the front surface environment. By positioning the conductive wire on the rear surface side and using the base as a shield, the harmful electromagnetic radiation is blocked from reaching the front surface side, resolving the contradiction between simple connection and radiation reduction

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-generated harmful factors

If the conductive wire is drawn out from the rear surface side of the base, then electromagnetic field radiation on the front surface side is reduced, but the wire routing becomes more complex

Engineering Contradiction:

Improveelectromagnetic field radiation reductionVSAvoidwire routing complexity

Core Design Contradiction:

Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The wire routing path is merged with the base structure itself. The conductive wire passes through the base from the rear surface side to the front surface side, combining the shielding function of the base with the wire routing function, thereby reducing electromagnetic radiation without significantly increasing overall device complexity

Inventive Principle:

Principle #5Merging (Combining)

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 design effectively reduces electromagnetic field radiation on the front surface side of the coil apparatus, minimizing its impact on the surrounding environment.

Implementation Method 1

the base to shield electromagnetic field radiation on the front surface side

Methodology Applied

Scientific EffectElectromagnetic shielding: Faraday Cage

Data Source

PatentUS11264834B2Coil apparatus

Publication Date: 2022.03.01 IHI CORP

AI summary

A coil apparatus includes a base having a front surface and a rear surface, a magnetic portion provided on a side of the front surface of the base, and a coil portion which is provided on an opposite side from the base with respect to the magnetic portion and includes a conductive wire. The magnetic portion includes a first passing region, the base includes a second passing region, and the conductive wire is drawn out from the rear surface of the base through the first passing region and the second passing region.