Overlapped Sheet Wire Harness Protector for Fewer Part Variants

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Solution Overview

Problem

Existing wire harness protection systems require a large number of different protection members to achieve various protection performances, leading to increased complexity and costs in manufacturing and inventory management.

Innovation Solution

A wire harness protection member is designed using a protector made by overlapping multiple sheet materials, where the same materials and shapes are used, and the sheet materials are shifted in the axial direction to overlap partially, allowing for efficient attachment to the wire harness using a fixing portion that welds the end portions of the protector together.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a dedicated protection member is manufactured according to the required protection performance, then the protection performance is improved, but the number of types of members increases

Engineering Contradiction:
Improveprotection performanceVSAvoidnumber of types of members
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention uses a single type of sheet material that can be configured in different ways (different numbers of overlapping sheets, different wrapping configurations) to achieve various protection performance levels. This universal base material serves multiple protection functions instead of requiring dedicated materials for each protection level.

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

Solution Approach 2:

The protection member is segmented into multiple identical sheet materials that are overlapped and wrapped around the wire harness. By controlling the number of sheets and their overlap configuration, different protection performances are achieved using the same basic component, thus reducing the number of member types while maintaining protection effectiveness.

Inventive Principle:
Principle #1Segmentation

2Reliability

If multiple types of protection members are manufactured for different protection performances, then the required protection performance is achieved, but the manufacturing efficiency decreases

Engineering Contradiction:
Improveprotection performanceVSAvoidmanufacturing efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

A single type of sheet material is designed to perform multiple protection functions by varying the configuration (number of sheets, overlap amount, wrapping method). This eliminates the need to manufacture and manage multiple specialized protection members, thereby improving manufacturing efficiency while still achieving different protection performance levels.

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

Solution Approach 2:

The protection performance is adjusted by changing parameters of the same sheet material configuration rather than using different materials. Parameters such as the number of overlapping sheets, the degree of overlap, and the wrapping tension can be varied to achieve different protection levels from a universal base material, streamlining the manufacturing process.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If multiple types of protection members are maintained in inventory for different protection performances, then the required protection performance is achieved, but the inventory management complexity increases

Engineering Contradiction:
Improveprotection performanceVSAvoidinventory management complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The inventory is simplified to a single type of sheet material that can be configured to meet different protection requirements. This universal component replaces multiple specialized protection members in the inventory, reducing management complexity while maintaining the ability to provide appropriate protection performance for different applications.

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

Data Source

PatentUS20250183634A1Wire harness protection member and method of manufacturing protection member-equipped wire harness
Publication Date: 2025.06.05 YAZAKI CORP
  • US20250183634A1 patent drawing
  • US20250183634A1 patent drawing
  • US20250183634A1 patent drawing

AI summary

A wire harness protection member has: a protector constituted by overlapping a plurality of sheet materials; and a fixing portion which fixes both end portions of the protector to each other, in which the plurality of sheet materials has same materials and same shapes, the plurality of sheet materials includes a first sheet material and a second sheet material, the second sheet material is disposed at a position shifted from the first sheet material in an axial direction of the wire harness, the protector is wound around the wire harness such that the inner side surfaces of both end portions of the protector face each other, and the fixing portion fixes both end portions of the protector to each other along an opposing direction in which the inner side surfaces of both end portions of the protector face each other.