Electric Wire Fixing Structure for Stable Sheath and Inner Wire Positioning

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Solution Overview

Problem

Existing electric wire fixing structures fail to provide stable protection for inner electric wires due to weak adhesion between inner electric wires and the sheath portion, leading to independent movement and stretching of the sheath, which destabilizes the arrangement of the fastening member and reduces the thickness of the sheath, compromising the protection of the inner electric wires.

Innovation Solution

An electric wire fixing structure that includes an arrangement member with a sheath fixing portion fixed to the sheath portion and an inner fixing portion fixed to the inner electric wires, distributing tensile forces to both, thereby stabilizing the position of the arrangement member and preventing sheath stretching.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the arrangement member is fixed only to the sheath portion, then the installation is simple, but the arrangement position of the arrangement member fluctuates when tensile force is applied

Engineering Contradiction:

Improveinstallation simplicityVSAvoidarrangement position stability

Core Design Contradiction:

Ease of manufactureVSStability of the object's composition

Solution Approach 1:

The arrangement member is divided into two separate fixing portions: a sheath fixing portion that attaches to the sheath and an inner wire fixing portion that attaches to the inner electric wires. This segmentation allows the arrangement member to be anchored at two different locations, preventing relative movement between the sheath and inner wires while maintaining installation simplicity.

Inventive Principle:

Principle #1Segmentation

2Device complexity

If the arrangement member is fixed only to the sheath portion, then the structure is simple, but the sheath portion stretches easily under tensile force

Engineering Contradiction:

Improvestructure simplicityVSAvoidsheath stretching resistance

Core Design Contradiction:

Device complexityVSStrength

Solution Approach 1:

The fixing structure is segmented into two independent attachment points: one on the sheath and one on the inner wires. This distributes the tensile load across both attachment points, preventing the sheath from bearing the full tensile force alone and thereby reducing sheath stretching while maintaining structural simplicity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The sheath fixing portion and inner wire fixing portion are combined into a single integrated arrangement member. This merging allows both fixing functions to work together simultaneously, providing combined support that prevents sheath stretching without requiring separate complex fixing mechanisms.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If the adhesion force between inner electric wires and sheath portion is weak, then the electric wire structure is flexible, but the inner electric wire and sheath portion move independently under tensile force

Engineering Contradiction:

Improveelectric wire flexibilityVSAvoidrelative position stability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The arrangement member is segmented into two separate fixing portions that independently attach to different components (sheath and inner wires). This segmentation creates two anchoring points that prevent relative movement between the sheath and inner wires, maintaining their structural relationship while preserving the overall flexibility of the electric wire assembly.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250364747A1Electric wire fixing structure

Publication Date: 2025.11.27 YAZAKI CORP

AI summary

In an electric wire fixing structure including an electric wire including a sheath portion covering an outer periphery of a plurality of inner electric wires, and an arrangement member being arranged on the sheath portion and the inner electric wire exposed from the sheath portion with respect to an outer periphery of the electric wire, the arrangement member includes a sheath fixing portion fixed to the sheath portion and an inner fixing portion fixed to the plurality of inner electric wires.