Wire Harness Corrugated Tube Layout for Vehicle Routing Flexibility
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Solution Overview
Problem
Conventional wire harnesses lack versatility in bending restrictions, making them unsuitable for various vehicle types, as they have fixed configurations that do not adapt well to different vehicle requirements.
Innovation Solution
A wire harness design featuring a tubular exterior member with a linear portion and a corrugated portion, where the corrugated portion has higher bendability and is restricted by a route restricting member, allowing for adjustable bending characteristics to accommodate different vehicle types by changing the position and length of the restricting member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed configuration wire harness is used, then the route restriction is maintained, but the adaptability to different vehicle types deteriorates
Solution Approach 1:
The exterior tube is divided into multiple sections: a linear portion (first exterior tube) and a corrugated portion (second exterior tube). The route restricting member is selectively attached to different portions depending on vehicle type requirements. This segmentation allows the wire harness to maintain route restriction where needed while providing flexibility where required, enabling adaptation to different vehicle types.
Solution Approach 2:
The wire harness transitions from a static, fixed configuration to a dynamic, adjustable configuration. The route restricting member can be positioned at different locations along the exterior tube based on specific vehicle type requirements. This dynamic positioning capability allows the same wire harness design to adapt to multiple vehicle types while maintaining necessary route restrictions.
2Reliability
If the entire exterior tube is made rigid for route restriction, then the route control is improved, but the bendability deteriorates
Solution Approach 1:
Different portions of the exterior tube have different properties: the linear portion provides rigidity for route control, while the corrugated portion provides flexibility for bending. The route restricting member is selectively attached to specific portions based on where route control is needed, allowing local optimization of both rigidity and flexibility within the same wire harness.
Data Source
AI summary
A wire harness including: a wire; an exterior tube that is tubular and covers an outer circumference of the wire; and a first route restrictor that is attached to an outer circumference of the exterior tube, and is configured to restrict a route of the exterior tube, wherein: the exterior tube includes a linear portion, and a corrugated portion that is continuous from the linear portion, the corrugated portion has a higher bendability than the linear portion, and the first route restrictor is attached to the corrugated portion.