Resin Identifying Portion for Wiring Harness High-Voltage Warning
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Solution Overview
Problem
Wiring harnesses in electric and hybrid vehicles carrying high-voltage currents face high painting costs due to the need for severe environmental resistance, making it expensive to provide visual warnings for high-voltage currents.
Innovation Solution
A resin identifying portion is formed on the outer surface of the conduit member, colored in a predetermined color to warn of high-voltage and high-ampere currents, using extrusion or resin sheet materials, allowing for targeted and cost-effective application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If painting is used to color the conduit member for high-voltage warning, then visual identification is provided, but manufacturing cost increases due to severe environmental resistance requirements
Solution Approach 1:
The patent applies a resin identifying portion that is extruded directly onto the conduit member surface, replacing expensive painting processes. This resin layer provides the necessary visual identification without requiring the severe environmental resistance that painting would demand, thereby reducing manufacturing costs while maintaining the warning function.
Solution Approach 2:
The patent changes the method of applying identification from painting (which requires environmental resistance parameters) to resin extrusion (which provides identification through material presence and color). This parameter change in the identification method eliminates the need for expensive environmental resistance treatments while maintaining visual warning capability.
2Loss of information
If the entire conduit member is colored for identification, then complete warning coverage is provided, but material costs and processing complexity increase
Solution Approach 1:
The patent applies the resin identifying portion selectively to specific locations on the conduit member where high-voltage warning is most needed, rather than coloring the entire conduit member. This local application reduces resin material costs and simplifies the extrusion process while providing adequate warning coverage at critical areas.
Solution Approach 2:
The patent implements partial coloring of the conduit member using resin extrusion, applying identification only to the extent necessary for safety warnings. This partial action approach reduces both material consumption and processing complexity compared to complete conduit member coloring, while maintaining sufficient warning functionality.
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
The resin identifying portion provides a cost-effective means to warn of high-voltage currents only where necessary, reducing material costs and simplifying the application process compared to painting, while maintaining environmental resistance.
Implementation Method 1
The resin identifying portion is formed by extruding a resin or by winding the resin sheet material or tape material around the outer surface of the conduit member
Data Source
Figure 1A~1C
Figure 2A~2C
Figure 3
AI summary
A wiring harness includes one or a plurality of conductor lines and a conduit member which accommodates therein the conductor line or lines, an identification in a predetermined color being applied to an outer surface of the conduit member. A resin identifying portion is formed on the outer surface of the conduit member by extruding a resin, or a resin sheet material or tape material is wound around the outer surface of the conduit member that is formed as the resin identifying portion.