Vehicle Optical Coupler Layout to Prevent Harness Assembly Breakage
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Solution Overview
Problem
The breakage of optical couplers in vehicle wiring systems due to external forces during assembly with electric wire harnesses is a significant issue, as the material used for optical couplers is soft and prone to damage.
Innovation Solution
The optical coupler is disposed in a portion of the optical transmission line other than the section where the electric wire harness and optical transmission line are integrated, eliminating the need for assembly and thus reducing the risk of breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the optical coupler is assembled with the electric wire harness in the integrated section, then the wiring system can be more compact and space-efficient, but the optical coupler is prone to breakage due to external forces during assembly
Solution Approach 1:
The optical transmission line is divided into two distinct sections: an integrated section where the electric wire harness and optical transmission line are combined, and a non-integrated section where only the optical transmission line is present. The optical coupler is specifically placed in the non-integrated section, separating it from the electric wire harness assembly process and protecting it from assembly-related external forces while maintaining overall system compactness through the integrated section.
2Area of stationary object
If the optical coupler is placed in the integrated section with the electric wire harness, then space allocation is optimized, but the soft material of the optical coupler makes it vulnerable to damage during assembly
Solution Approach 1:
The optical coupler is extracted from the integrated section and placed in the non-integrated section of the optical transmission line. This extraction removes the optical coupler from the assembly environment of the electric wire harness, eliminating its exposure to harmful external forces during assembly while the integrated section maintains space optimization for the remaining components.
3Device complexity
If the optical transmission line and electric wire harness are fully integrated, then the wiring system becomes more compact, but the optical coupler cannot be protected from assembly forces
Solution Approach 1:
The wiring system exhibits different integration qualities in different sections: the integrated section combines electric wire harness and optical transmission line for compactness, while the non-integrated section contains only the optical transmission line to protect the optical coupler. This local differentiation of integration quality allows the system to achieve compactness where possible while providing protection where needed.
Data Source
AI summary
A vehicle wiring system includes a plurality of functional units to be mounted in a vehicle, an optical transmission line that is wired between the functional units and configured to transmit an optical signal of the functional units, an electric wire harness that is provided, in a partial section of the optical transmission line, together with the optical transmission line in a state of being integrated with the optical transmission line, and an optical coupler that is disposed in a portion of the optical transmission line other than the section and constitutes a part of the optical transmission line.