Multicore Cable Filler for Roundness and Lateral Pressure Protection
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Solution Overview
Problem
Multicore cables face challenges in maintaining roundness and protecting core and optical units due to external forces during installation, particularly when subjected to lateral pressure, which can lead to damage and mechanical vulnerability.
Innovation Solution
A filler with a symmetric frame structure that includes rotating parts and cut sections, allowing it to open and close, providing a circular arc shape to maintain roundness and accommodate optical units, while support parts distribute external forces to prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If core parts are arranged symmetrically in a multicore cable, then power transmission function is achieved, but roundness maintenance becomes difficult under external forces
Solution Approach 1:
A filler structure is introduced as an intermediary element between the core parts and the protective layer. This filler acts as a mediator that maintains roundness and distributes external forces, preventing direct transmission of lateral pressure to the core parts while preserving their functional arrangement.
Solution Approach 2:
The filler structure changes its physical parameters (expands or contracts) in response to external forces such as lateral pressure during installation. This parameter change allows the filler to adapt to installation conditions, maintaining cable roundness and protecting core parts from damage.
2Reliability
If optical units are added to create composite cables for simultaneous power and information transmission, then communication bandwidth is improved, but mechanical vulnerability increases
Solution Approach 1:
The filler structure provides beforehand cushioning protection for optical units by absorbing and distributing external forces before they can reach the vulnerable optical fibers. This pre-protective mechanism prevents mechanical damage during installation and operation, ensuring transmission reliability.
Solution Approach 2:
The filler serves as an intermediary protective layer between external forces and the optical units, isolating the fragile optical fibers from direct mechanical stress while allowing the composite cable to function as intended for simultaneous power and data transmission.
3Reliability
If filler is provided to maintain roundness and protect core parts, then mechanical protection is improved, but device complexity increases
Solution Approach 1:
The filler is segmented into multiple functional parts including a frame structure with support portions and a rotating part. This segmentation allows each component to perform specific protective functions while maintaining overall structural manageability and assembly feasibility.
Solution Approach 2:
The filler incorporates a rotating part that enables dynamic adjustment of the filler structure. This dynamic element allows the filler to adapt to different installation conditions and external forces, providing versatile protection without requiring an overly complex static structure.
Data Source
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AI summary
The present invention relates to a filler and a cable having the same and, more particularly, to a filler and a multicore cable comprising a plurality of core portions, which comprises a conductor, and a protective layer that surrounds the core portions, the filler being provided between the core portions and the protective layer of the multicore cable, the filler being characterized by comprising: frame portions comprising a first frame portion and a second frame portion, which are rotated by predetermined angles towards both sides about the center portion thereof and then incised; and a support portion provided between the frame portions so as to connect the frame portions to each other.