Flat Cable Axial Symmetry for Signal Stability

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing round cables face challenges in maintaining the relative position of differential wires during twisting, affecting high-speed signal transmission and electrical stability, and are bulky, making them difficult to process.

Innovation Solution

A flat cable design with pairs of differential wires arranged in two rows axially symmetrically, enclosed by an insulative layer, a metal shielding layer, and a jacket, ensuring easier positional maintenance and stable electrical performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If differential wires are arranged in a round cable before twisting, then the cable can transmit high speed signals, but the relative position of differential wires cannot be maintained during twisting, affecting electrical stability

Engineering Contradiction:

Improveelectrical stabilityVSAvoidprocessing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent inverts the conventional round cable structure by using a flat cable configuration. Instead of twisting wires in a circular arrangement, the differential wires are arranged in two parallel rows within a flat structure, eliminating the twisting process while maintaining high-speed signal transmission capability.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent transitions from a two-dimensional circular arrangement to a three-dimensional flat structure with wires arranged in two rows. This dimensional change allows differential wires to maintain their relative positions through the insulative and shielding layers without requiring twisting, thereby improving electrical stability.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Speed

If round cable structure is used, then high speed signal transmission is possible, but the cable thickness increases, occupying large space and making processing difficult

Engineering Contradiction:

Improvesignal transmission speedVSAvoidcable thickness

Core Design Contradiction:

SpeedVSVolume of moving object

Solution Approach 1:

Inventive Principle:

Principle #13The other way round (Inversion)

3Manufacturing precision

If differential wires are arranged in two rows axially symmetrically, then positional relationship is easily maintained, but the arrangement complexity increases

Engineering Contradiction:

Improvepositional accuracyVSAvoidarrangement complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent employs axial symmetry within each pair of differential wires while maintaining an overall asymmetric flat structure. Each differential pair is arranged symmetrically about the vertical axis, which simplifies positioning and manufacturing while the overall flat configuration reduces complexity compared to round cable twisting.

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentUS10553334B2Flat cable

Publication Date: 2020.02.04 FOXCONN INTERCONNECT TECHNOLOGY LTD

AI summary

A flat cable (100) includes plural wires (10), an insulative layer (20) enclosing the wires, a metal shielding layer (30) enclosing the insulative layer, and a jacket (40) enclosing the metal shielding layer. The wires include plural pairs of differential wires (11) for transmitting high speed signals. The pairs of differential wires are evenly arranged in two rows, and each pair of differential wires is axially symmetrically arranged in the up and down direction.