Composite Cable Mirror-Symmetric Twist Design
Solution Overview
Problem
Existing composite cables for connecting electronic devices lack reliable noise immunity and efficient electrical connection methods, particularly in ensuring proper alignment and flexibility during assembly.
Innovation Solution
A composite cable design featuring a position fixation portion with mirror-symmetric cable arrangement and a twist portion, where cables are fixed parallel to each other and then twisted, along with a manufacturing method that alternates between these configurations to enhance noise resistance and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cables are bundled together in a composite cable, then connectivity between electronic devices is achieved, but alignment precision and noise immunity are insufficient
Solution Approach 1:
The patent applies asymmetry by creating a mirror-symmetric arrangement pattern of cables relative to the centerline of the composite cable. This asymmetric design (mirror symmetry rather than simple symmetry) ensures that connection portions align precisely with substrate connection portions while maintaining balanced mechanical properties and noise immunity.
Solution Approach 2:
The composite cable is segmented into multiple individual cables that are independently arranged and then bundled together. This segmentation allows each cable to be positioned precisely according to the mirror-symmetric pattern, improving both alignment precision and noise immunity while maintaining connectivity functionality.
2Ease of manufacture
If cables are fixed in parallel arrangement, then manufacturing simplicity is maintained, but flexural strength and adaptability are reduced
Solution Approach 1:
The cable bundle is segmented into multiple individual cables that can be independently positioned and arranged in a mirror-symmetric pattern. This segmentation enables precise alignment during manufacturing while allowing the bundled structure to achieve superior flexural strength and adaptability compared to a solid cable.
Solution Approach 2:
The composite cable combines multiple individual cables into a unified bundled structure with an outer coat. This composite construction maintains manufacturing simplicity through standardized bundling processes while achieving enhanced flexural strength, adaptability, and mirror-symmetric arrangement precision.
3Adaptability or versatility
If cables are twisted together, then flexibility and noise resistance are improved, but alignment precision with substrate connection portions deteriorates
Solution Approach 1:
The cables are preliminarily arranged in a mirror-symmetric pattern before being twisted and bundled into the final composite cable structure. This preliminary arrangement ensures that alignment precision with substrate connection portions is established early, while subsequent twisting provides the desired flexibility and noise resistance without compromising the pre-established alignment.
Solution Approach 2:
The mirror-symmetric arrangement pattern creates an asymmetric configuration relative to the cable bundle centerline. This asymmetric design allows the cables to be positioned for precise substrate alignment while maintaining the flexibility benefits of the twisted bundle structure, resolving the contradiction between alignment precision and flexibility.
4Manufacturing precision
If a complex positioning system is used to ensure cable alignment, then manufacturing precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The mirror-symmetric arrangement pattern provides an inherent geometric reference system that simplifies positioning. By arranging cables symmetrically around a centerline, the design creates natural alignment references that reduce the need for complex external positioning systems, achieving high manufacturing precision with simpler manufacturing processes.
Solution Approach 2:
The mirror-symmetric arrangement is established as a preliminary design feature before manufacturing begins. This pre-planned symmetric configuration provides built-in alignment references that guide the manufacturing process, eliminating the need for complex real-time positioning systems and reducing both device complexity and manufacturing cost while maintaining high precision.
Data Source
AI summary
A composite cable that includes plural cables connectable to respective connection portions arranged on a substrate, and an outer coat that covers the cables, the composite cable including: a position fixation portion, in which the cables are fixed in positions so as to be parallel to one another in a longitudinal direction of the cables; and a twist portion, in which the cables extending from an end portion of the position fixation portion are twisted together, wherein in the position fixation portion, an arrangement pattern of the cables on a cross-section perpendicular to the longitudinal direction of the cables is mirror symmetric to an arrangement pattern of the connection portions.