Multi-Core Cable Braid Angle for Bend and Twist Durability
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Solution Overview
Problem
Existing multi-core cables require complex structures or expensive materials to achieve high bendability and twistability, which complicates their durability and practicality.
Innovation Solution
A multi-core cable design featuring a plurality of cable units bundled with a metallic braid shield layer, where the braid angle is set between 60 degrees and 64 degrees, and the cable units include coaxial wires with a center conductor diameter of 0.09 mm or less.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a complicated structure or expensive material is used, then bendability and twistability of the multi-core cable are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent changes the braid angle parameter of the metallic shield layer to a specific range (45° to 60°) to improve bendability and twistability. By optimizing this geometric parameter, the cable achieves better flexibility without requiring complex structures or expensive materials, directly resolving the technical contradiction between ease of operation and device complexity
2Reliability
If a complicated structure or expensive material is used, then durability of the multi-core cable is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent optimizes the braid angle parameter (45° to 60°) of the metallic shield layer to simultaneously improve both durability and flexibility. This parameter optimization allows the cable to withstand repeated bending and twisting while maintaining structural integrity, achieving high durability with a relatively simple structure that does not require expensive materials or complex designs
Data Source
AI summary
A multi-core cable includes a plurality of cable units, a shield layer that covers the plurality of cable units, and a first sheath. The plurality of cable units are bundled. An outer diameter of the first sheath is 10 mm or less. The cable unit includes a plurality of core electric wires. The core electric wire includes a coaxial wire. The coaxial wire includes a center conductor, an insulating layer that covers the center conductor, an outer conductor that covers the insulating layer, and a second sheath that covers the outer conductor. A diameter of the center conductor is 0.09 mm or less. The shield layer is formed of a metallic braid where metal wires are braided. A braid angle of the metallic braid is 60 degrees or more and 64 degrees or less.