Wire Harness Sewing Flat Curved Sheathing
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Solution Overview
Problem
Existing wire harness technologies face challenges in accommodating both flat and flexed regions with a single sheathing member, leading to increased components and complex shapes, making it difficult to efficiently cover and protect electric wires in various vehicle routing scenarios.
Innovation Solution
A wire harness design featuring a sheet-shaped sheathing member with a combination of flat and curved regions, where the sheathing member is sewn to the electric wire using a sewing thread, allowing for easy curvature and flexibility, and optionally including a slit and fixating member to maintain the curved state, enabling the use of a single sheathing member for both flat and flexed regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate sheathing members are attached to flat and flexed regions, then each region can be properly covered, but the number of components increases
Solution Approach 1:
The single sheathing member is divided into multiple functional regions (flat region and curved region) along its length, allowing it to adapt to different wire harness configurations. The flat region covers straight sections while the curved region covers flexed sections, eliminating the need for multiple separate sheathing members while maintaining proper coverage of all regions.
2Device complexity
If a single molded sheathing member is used to accommodate both flat and flexed regions, then the number of components is reduced, but the shape becomes complicated
Solution Approach 1:
The sheathing member features locally differentiated properties: a flat region for straight wire harness sections and a curved region for flexed sections. This local quality variation allows the single sheathing member to properly accommodate both flat and flexed regions without requiring a completely complicated three-dimensional molded shape, as each region has the appropriate local geometry for its function.
3Stability of the object's composition
If a sheathing member is made rigid to maintain shape, then structural stability is improved, but flexibility and ease of curvature are reduced
Solution Approach 1:
The sheathing member incorporates a curved region that is designed to be more flexible than the flat region, allowing it to bend and conform to flexed wire harness configurations. This dynamic design enables the sheathing member to transition between different states (flat and curved) as needed, providing both shape stability where required and flexibility where needed without compromising overall structural integrity.
Data Source
AI summary
The wire harness includes a sheathing member that is formed in a sheet shape, at least one electric wire that is arranged on a first principal surface side of the sheathing member, and a sewing thread that sews the electric wire to the sheathing member. A partial region of the sheathing member that is arranged along an extension direction of the electric wire is in a flat state, while another at least partial region of the sheathing member that is arranged along the extension direction of the electric wire is curved in a direction intersecting with the extension direction of the electric wire.