Wire Harness Exterior Structure Without Tape Winding
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Solution Overview
Problem
Conventional wire harness exterior members require time-consuming and skill-dependent tape winding operations, leading to variations in operation speed and appearance, and inefficient use of protective materials.
Innovation Solution
A wire harness design featuring an arc-shaped exterior body with an opening and a filling member, such as a hot melt adhesive, that fixes the exterior member to the wiring material bundle, reducing the need for tape winding and ensuring consistent operation speed and material efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tape winding is used to fix the exterior member to the wiring material bundle, then the exterior member can be secured, but the operation becomes skill-dependent with variations in operation speed and appearance quality
Solution Approach 1:
The patent replaces the mechanical tape winding operation with a filling member that is inserted into the exterior member. This substitution eliminates the skill-dependent tape winding process while maintaining the securing function through the filling member's physical presence and friction fit within the exterior member's internal structure.
Solution Approach 2:
The filling member acts as an intermediary element between the exterior member and the wiring material bundle. Instead of directly winding tape around the exterior member, the filling member is inserted through the exterior member's internal passage to provide securing, thereby simplifying the operation and improving consistency.
2Reliability
If tape winding is used to fix the exterior member, then the exterior member can be secured, but the appearance quality varies depending on operator skill
Solution Approach 1:
The patent replaces the mechanical tape winding operation with a filling member that is inserted into the exterior member. This substitution eliminates the skill-dependent tape winding process while maintaining the securing function through the filling member's physical presence and friction fit within the exterior member's internal structure.
3Ease of operation
If conventional exterior members with slits are used, then wire harness can be inserted, but additional tape winding work is required
Solution Approach 1:
The patent combines the insertion function and the securing function into a single integrated process. The filling member is inserted through the exterior member's internal passage, simultaneously achieving both the wire harness insertion and the securing of the exterior member, thereby eliminating the separate tape winding step.
Solution Approach 2:
The patent extracts the securing function from the tape winding process and integrates it into the exterior member design itself. The exterior member is designed with an internal passage that accepts a filling member, which provides the securing function inherently, eliminating the need for separate tape winding operations.
Data Source
AI summary
A wire harness includes a wiring material bundle, an exterior member including an exterior body which extends along an axial direction and of which a cross-sectional shape viewed from the axial direction is formed in an arc shape, and an opening formed to extend from one end to the other end of the exterior body along the axial direction, and a filling member filling at least a part of the inside of the opening in an accommodated state where the wiring material bundle is accommodated in the exterior body.