Segmented Wire Harness Holder to Restrict Wire Rotation
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Solution Overview
Problem
Conventional wire harnesses in vehicles, such as hybrid and electric vehicles, face challenges in restricting the rotation of wires within holders, often requiring adjustable jigs that complicate the structure and are less versatile for wires with different cross-sectional shapes.
Innovation Solution
A wire harness design featuring a tubular holder with a first segment and a second segment separated by a longitudinal separation plane, each with holding portions to securely sandwich the wire, eliminating the need for a bundling jig and accommodating various wire shapes, thereby restricting wire rotation effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional holder with a true-circular cross section is used, then the holder structure is simple, but the wire can easily rotate in the holder due to large gaps between the holder and wire
Solution Approach 1:
The holder's cross-sectional shape is changed from a true circle to an asymmetric shape that matches the wire's cross-sectional shape. This asymmetric design eliminates large gaps between the holder and wire, effectively restricting wire rotation while maintaining structural simplicity.
2Stability of the object's composition
If a jig for restraining the wire is used to restrict rotation, then wire rotation is restricted, but the structure becomes more complex and the jig needs to be adjusted for different wire types
Solution Approach 1:
The wire rotation restriction function is merged into the holder itself by giving the holder an asymmetric cross-sectional shape that matches the wire. This eliminates the need for a separate adjustable jig, simplifying the overall structure while maintaining effective wire rotation restriction.
Solution Approach 2:
The asymmetric holder design is universally applicable to wires with different cross-sectional shapes. By matching the holder's cross-section to the wire's cross-section, the same holder design can accommodate various wire types without requiring adjustable components or additional jigs.
3Device complexity
If a conventional holder is used, then the structure is simple, but versatility for handling wires with different cross-sectional shapes is reduced
Solution Approach 1:
The holder's cross-sectional shape is locally adapted to match the specific wire cross-sectional shape it needs to accommodate. This local quality matching approach allows the holder to effectively restrict rotation for that specific wire type while maintaining overall structural simplicity.
Data Source
AI summary
To provide a wire harness that restricts rotation of a wire in a holder, a wire harness includes a tubular member, a wire member extending through the tubular member, and a tubular holder holding the wire member in the tubular member. The holder includes a first segment and a second segment, which are separated by a separation plane extending in a longitudinal direction of the holder. The first segment includes a holding portion that holds the wire member in the holder. Also, the second segment includes a holding portion that holds the wire member in the holder.