Vehicle Wire Harness Routing for Small-Space Flex Resistance
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Solution Overview
Problem
Wire harnesses for connecting vehicle body-side and wheel-side devices face challenges in routing in small spaces and require improved flex resistance to withstand bending deformations.
Innovation Solution
A wire harness comprising a first wiring member with a longer outer path length and a second wiring member with higher flex resistance, where the first wiring member is routed along a detour path to avoid bending and the second wiring member is routed along a shorter path prone to bending, allowing both to be routed separately outside the vehicle body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the wire harness is routed in a small space, then the routing flexibility is improved, but the flex resistance deteriorates
Solution Approach 1:
The wire harness is segmented into multiple wiring members (first wiring member and second wiring member) with different path lengths. The first wiring member has a longer outer path length that avoids bending paths, while the second wiring member has a shorter outer path length that can accommodate bending. This segmentation allows each wiring member to be optimized for its specific routing requirements, improving overall routing flexibility while maintaining flex resistance through the longer path member.
2Reliability
If the outer path length of the first wiring member is increased to avoid bending, then the flex resistance is improved, but the routing space requirement increases
Solution Approach 1:
Different wiring members are assigned different path lengths based on their local routing requirements. The first wiring member is given a longer outer path length specifically in the regions prone to bending, while the second wiring member has a shorter path where bending is acceptable. This local differentiation of path lengths allows the system to achieve flex resistance where needed without unnecessarily increasing the overall routing space requirements.
3Reliability
If separate routing paths are used for different wiring members, then the flex resistance is improved, but the device complexity increases
Solution Approach 1:
The wire harness is divided into multiple wiring members, each with distinct outer path lengths optimized for their specific functions. The first wiring member with the longer path is routed to avoid bending zones, while the second wiring member with the shorter path is routed through areas where bending is acceptable. This segmentation strategy achieves improved flex resistance through differentiated routing without requiring complex routing structures, as each member's path is optimized independently based on simple length differentiation.
Data Source
AI summary
A wire harness for connecting a vehicle body-side device and a wheel-side device includes: a first wiring member; and a second wiring member that has higher flex resistance than the first wiring member. A first outer path length of the first wiring member is defined by a length of a first outer path portion of the first wiring member. A second outer path length of the second wiring member is defined by a length of a second outer path portion of the second wiring member. The first outer path length of the first wiring member is greater than the second outer path length of the second wiring member.