Twist-Oriented Wire Harness Stranding for Easier Bending
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Solution Overview
Problem
Existing wire harnesses are difficult to bend in a direction where a twist occurs in the wires, limiting their flexibility and ease of installation.
Innovation Solution
A wire harness design featuring stranded conductors with a specific stranding direction that tightens when bent, combined with insulation coverings that facilitate bending by preventing loosening, allowing for easy twisting between terminal blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the wire harness is bent in a direction where a twist occurs in the wires, then the flexibility and ease of installation are improved, but the stranding of the stranded conductors loosens and the insulation coverings cannot follow the twist, making bending difficult
Solution Approach 1:
The patent changes the physical parameter of the stranded conductor by specifying a particular stranding direction that corresponds to the direction of twist when the wire harness is bent. This parameter change allows the stranding to tighten rather than loosen during bending, enabling easy installation while maintaining structural integrity
Solution Approach 2:
Instead of preventing twist during bending (conventional approach), the patent inverts the approach by designing the stranding direction to work with the twist. The stranding is arranged so that the twist tightens the strands rather than loosening them, converting what would normally be a harmful effect into a beneficial one
Data Source
AI summary
The wires 20 each include a stranded conductor 21, and an insulation covering 26 that covers the stranded conductor 21. One end portions of the plurality of wires 20 are held by a first holding portion 31 of the first terminal block 30, and the other end portions of the plurality of wires 20 are held by a second holding portion 41 of the second terminal block 40. A connection orientation of the wire harness 10 is an orientation in which the plurality of wires 20 are bent between the first holding portion 31 and the second holding portion 41, and in which a twist occurs in the plurality of wires 20. A stranding direction of the stranded conductors 21 of half or more of the plurality of wires 20 is a direction in which stranding of the stranded conductors 21 is tightened by the twist.