Vehicle Console Shielding Structure for Electromagnetic Wave Isolation

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Solution Overview

Problem

Conventional electromagnetic wave shielding structures for vehicles have limited flexibility in arranging power supplies due to the requirement for the power supply to be located behind a rear sheet, restricting the effective shielding of electromagnetic waves from reaching the passenger compartment.

Innovation Solution

An electromagnetic wave shielding structure for a vehicle console that includes a metal shielding member between an electrical instrument and a transmission, where the transmission is positioned within a defined shield region such that a straight line connecting the electromagnetic wave radiating portion to the shielding member's edge is continuously moved along the edge, effectively preventing electromagnetic wave radiation to the passenger compartment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the power supply is located behind the rear sheet as in conventional structures, then electromagnetic wave shielding is achieved, but the arrangement flexibility of the power supply is limited

Engineering Contradiction:

Improvearrangement flexibility of power supplyVSAvoidelectromagnetic wave radiation to passenger compartment

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

A shielding member made of electrically conductive material is introduced as an intermediary between the power supply and the passenger compartment. This shielding member blocks electromagnetic waves while allowing the power supply to be positioned more flexibly within the vehicle interior, resolving the contradiction between arrangement flexibility and electromagnetic wave shielding effectiveness.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the shielding member is not provided, then arrangement flexibility is improved, but electromagnetic waves are transmitted to the passenger compartment via the metal member of the transmission

Engineering Contradiction:

Improvearrangement flexibility of electrical instrumentVSAvoidelectromagnetic wave radiation

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The shielding member serves as a protective intermediary that blocks electromagnetic waves generated by the electrical instrument from reaching the passenger compartment through the transmission's metal members, enabling flexible instrument placement without compromising shielding effectiveness.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of manufacture

If the transmission is located outside the shield region, then ease of installation is improved, but electromagnetic waves are efficiently transmitted to the passenger compartment

Engineering Contradiction:

Improveease of installationVSAvoidelectromagnetic wave transmission

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The shield region is defined in three-dimensional space by moving a straight line along the circumferential edge of the shielding member, creating a volumetric protected zone. This spatial definition allows the transmission to be positioned within the shielded volume while maintaining ease of installation, as the shielding member's geometry naturally defines the protected space.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 expands the arrangement possibilities of the power supply while efficiently shielding electromagnetic waves, preventing radio noise and allowing for a more flexible placement of the electrical instrument, thereby enhancing the shielding effectiveness.

Implementation Method 1

a shielding member which is located between the electrical instrument and the transmission... The electromagnetic waves are transmitted radially from the electromagnetic wave radiating portion of the electrical instrument. If the shielding member is not provided, the electromagnetic waves radiated from the electromagnetic wave radiating portion of the electrical instrument are transmitted to the passenger compartment via the metal member of the transmission

Methodology Applied

Scientific EffectElectromagnetic wave shielding: Faraday Cage

Data Source

PatentUS9902332B2Electromagnetic wave shielding structure of vehicle console

Publication Date: 2018.02.27 NISSAN MOTOR CO LTD

AI summary

An electromagnetic wave shielding structure of a console installed in a passenger compartment of a vehicle has an electrical instrument installed in the console from which electromagnetic waves are radiated, a transmission including a metal member that receives the electromagnetic waves and transmits the electromagnetic waves to the passenger compartment and separated by a distance from the electrical instrument, and a shielding member located between the electrical instrument and the transmission to function as a shield against the electromagnetic waves radiated from the electrical instrument. The transmission is located in a shield region defined such that an electromagnetic wave radiating portion provided at the electrical instrument from which the electromagnetic waves are radiated is connected to a circumferential edge of the shielding member via a straight line, and the line is continuously moved along the circumferential edge of the shielding member around the electromagnetic wave radiating portion.