Armored Optoelectronic Cable Layout for Smaller Diameter

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Solution Overview

Problem

Conventional optoelectronic cables with armoring layers increase the outer diameter, making them inconvenient for production, packaging, storage, and installation due to rigidity and lack of flexibility, while optical fibers are vulnerable to damage.

Innovation Solution

An optoelectronic cable design with an armoring layer around the innermost optical fiber, combined with electric wires and filler wires, reduces the overall diameter and enhances flexibility, providing robust protection against external forces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If armoring layers are arranged concentrically on optical fibers to improve mechanical strength and protection, then tensile strength and compressive strength are improved, but the outer diameter of the cable increases

Engineering Contradiction:
Improvemechanical strengthVSAvoidouter diameter
Core Design Contradiction:
StrengthVSVolume of moving object

Solution Approach 1:

The patent transitions from concentric armoring layers to a flat-lay structure where the armoring layer is positioned at the periphery of the cable cross-section rather than wrapping around the optical fibers concentrically. This dimensional reconfiguration reduces the cable's outer diameter while maintaining the protective function of the armoring layer against mechanical damage.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Reliability

If armoring layers are added to improve water resistance and prevent rodent bites, then reliability is improved, but the cable becomes too hard to roll and not soft enough to handle

Engineering Contradiction:
Improveprotection effectVSAvoidhandling flexibility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent applies the armoring layer selectively at the periphery of the cable cross-section rather than as a complete concentric wrap around the optical fibers. This localized placement provides targeted protection against water resistance and rodent bites while minimizing the overall rigidity of the cable, thereby maintaining handling flexibility and ease of installation.

Inventive Principle:
Principle #3Local quality

3Duration of action of stationary object

If conventional armoring structures are used to improve mechanical protection, then durability is improved, but production, packaging, storage and transportation become inconvenient

Engineering Contradiction:
Improveservice lifetimeVSAvoidproduction convenience
Core Design Contradiction:
Duration of action of stationary objectVSEase of manufacture

Solution Approach 1:

The patent reconfigures the armoring layer from a concentric cylindrical arrangement to a flat-lay peripheral structure. This dimensional change simplifies the manufacturing process by eliminating complex concentric layering operations, reduces packaging volume, and facilitates easier storage and transportation while preserving the durability and service lifetime of the cable.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS12619041B2Optoelectronic cable
Publication Date: 2026.05.05 ELKA INT
  • US12619041B2 patent drawing
  • US12619041B2 patent drawing
  • US12619041B2 patent drawing

AI summary

An optoelectronic cable comprises an optical fiber wire disposed at the center of the optoelectronic cable, with an armoring layer that is arranged at a periphery of the optical fiber wire. A plurality of electric wires is disposed around the periphery of the optical fiber wire, and an outer sheath is disposed as an outermost layer of the optoelectronic cable. By arranging the armoring layer at the periphery of the innermost optical fiber wire, optical fibers therein can be protected from being damaged by external forces. The overall assembly can also effectively reduce the total diameter, resulting in a softer and more flexible optoelectronic cable highly convenient for packaging and installation.