Composite Cable Twist Direction Synchronization for Termination
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Solution Overview
Problem
The existing composite cables require time and effort to terminate due to the need to remove lubricants like talc powder, which complicates the termination process.
Innovation Solution
A composite cable design featuring a pair of first electric wires, a twisted pair wire with a smaller outer diameter, and a tape member spirally wound around the assembled article, where the twist direction of the twisted pair wire, the assembled article, and the tape member's winding direction are the same, facilitating easier termination without lubricants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a lubricant such as talc powder is interposed between electric wires and a sheath to reduce friction and improve flex resistance, then flex resistance is improved, but cable termination workability deteriorates due to the need to remove the lubricant
Solution Approach 1:
The patent extracts and removes the lubricant (talc powder) from the cable structure, eliminating the need to remove it during termination while preserving flex resistance through the twisted pair configuration and tape member design
Solution Approach 2:
The cable is segmented into distinct functional components: twisted pairs for signal transmission and a separate tape member for structural support, allowing each component to be optimized independently for its specific function
2Stability of the object's composition
If multiple electric wires are twisted together to form a composite cable, then distorsion resistance is improved, but cable termination complexity increases
Solution Approach 1:
The cable is divided into separate twisted pairs that can be handled and terminated independently, reducing the complexity of termination procedures while maintaining the distorsion resistance benefits of the twisted structure
Solution Approach 2:
Instead of terminating all wires simultaneously as a bundled composite cable, the patent allows termination of individual twisted pairs separately, inverting the conventional approach to simplify the termination process
Data Source
AI summary
A composite cable is provided that improves terminal machinability while maintaining bending resistance. The composite cable is provided with: a pair of first electric wires; a twisted-pair wire obtained by twisting together a pair of second electric wires having an outer diameter that is smaller than that of the first electric wires; and a tape member spirally wrapped around an aggregate obtained by twisting the pair of first electric wires together with the twisted-pair wire. The twisting direction of the twisted-pair wire, the twisting direction of the aggregate, and the wrapping direction of the tape member are all the same direction.