Wire Harness Movement Restrictor for Absorber Positioning

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Solution Overview

Problem

Conventional wire harnesses experience positional displacement of electromagnetic wave absorption members until they are fixed by tape, which complicates assembly and increases the risk of wire damage.

Innovation Solution

A wire harness design that includes an electromagnetic wave absorber with a through hole for the wire and a movement restrictor adjacent to it, which restricts movement in the wire's length direction, along with a covering member and tape for fixation, to prevent displacement and maintain the assembly's ease.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the electromagnetic wave absorption member is not fixed immediately, then the assembly process is simplified, but the electromagnetic wave absorption member experiences positional displacement relative to the wire

Engineering Contradiction:

Improveease of assemblyVSAvoidpositioning accuracy

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The movement restrictor is provided in advance on the electromagnetic wave absorption member to preliminarily prevent positional displacement. This allows the absorption member to be easily assembled without immediate fixation while maintaining positioning accuracy through the pre-installed restriction mechanism.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The movement restrictor acts as an intermediary component between the electromagnetic wave absorption member and the wire. It mediates the interaction by providing preliminary positional restriction without requiring immediate tape fixation, thus simplifying assembly while preventing displacement.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Manufacturing precision

If the electromagnetic wave absorption member is fixed with a tape member, then positional displacement is prevented, but the assembly process becomes more complex and time-consuming

Engineering Contradiction:

Improvepositioning accuracyVSAvoidassembly complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The movement restrictor performs the positioning function in advance, eliminating the need for complex tape fixation procedures. This preliminary restriction mechanism simplifies the overall assembly process while maintaining positioning accuracy.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The positioning function is extracted from the tape member and transferred to the movement restrictor. This separation allows the restrictor to handle positioning independently, reducing the complexity of the tape fixation process and simplifying assembly.

Inventive Principle:

Principle #2Taking out (Extraction)

3Ease of operation

If the electromagnetic wave absorption member is not securely positioned, then assembly is easier, but the wire is at risk of damage during the assembly process

Engineering Contradiction:

Improveease of assemblyVSAvoidwire protection

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The movement restrictor is provided in advance to preliminarily secure the electromagnetic wave absorption member to the wire. This preliminary securing prevents wire damage during assembly while maintaining ease of assembly by avoiding the need for immediate complex fixation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The movement restrictor provides beforehand protection for the wire by preventing excessive movement of the absorption member. This prior cushioning mechanism protects the wire from damage while allowing simple assembly procedures.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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 suppresses positional displacement of the electromagnetic wave absorber, simplifies assembly, and prevents wire damage by ensuring proper positioning and fixation without increasing the number of components.

Implementation Method 1

an electromagnetic wave absorption member that has a through hole through which the wire passes, and that is provided so as to surround an outer circumference of the wire

Methodology Applied

Scientific EffectElectromagnetic wave absorption: Absorption (EM radiation)

Data Source

PatentUS11225208B2Wire harness

Publication Date: 2022.01.18 SUMITOMO WIRING SYSTEMS LTD

AI summary

A wire harness including: a wire; an electromagnetic wave absorber that has a through hole through which the wire passes, and that is provided so as to surround an outer circumference of the wire; and a movement restrictor that is provided adjacent to the electromagnetic wave absorber, and that restricts movement of the electromagnetic wave absorber in a length direction of the wire.