Fiber Optic Tensioning Pulley Subsystem for Connector Wear Control
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Solution Overview
Problem
Existing fiber optic cross-connect systems face challenges in managing excess fiber optic cable lengths with inefficient tensioning mechanisms, leading to cable slack and potential mechanical interference, which can degrade connector durability and increase wear.
Innovation Solution
A fiber optic tensioning system utilizing a combination of fixed and movable pulleys with spring-loaded mechanisms to maintain optimal cable tension, integrated with a gripper system for precise connector handling and a telescopic robotic arm for minimal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional tensioning mechanisms are used to manage fiber optic cables, then the system structure is simple, but cable slack and mechanical interference occur leading to degraded connector durability
Solution Approach 1:
The patent introduces a pulley system as an intermediary mechanism between the fiber optic cable and the tensioning force. The pulleys redirect and distribute tension forces along the cable path, preventing direct mechanical stress on connectors while maintaining cable tension. This intermediary system resolves the contradiction by providing effective tensioning without requiring complex direct-actuation mechanisms at the connector points.
Solution Approach 2:
The tensioning system is segmented into multiple independent pulley units distributed along the cable path rather than using a single complex tensioning device. Each pulley handles a local section of the cable, allowing independent adjustment and reducing the complexity of any single component while collectively managing the entire cable run effectively.
2Ease of operation
If excessive cable length is allowed to manage flexibility, then cable routing is easier, but mechanical interference and wear increase
Solution Approach 1:
Pulleys serve as intermediary guide elements that redirect cables along predetermined paths, allowing the cable to maintain adequate length for flexibility while preventing random coiling and mechanical interference. The pulleys constrain the cable to smooth routing paths that eliminate sharp bends and contact points that would cause wear.
Solution Approach 2:
The patent employs curved routing paths through pulley arrangements rather than sharp angular bends. This curvature principle allows the cable to flex naturally along rounded paths, maintaining ease of routing while distributing mechanical stress evenly and preventing concentrated wear at sharp corners or contact points.
3Object-affected harmful factors
If tight cable tension is applied to prevent slack, then mechanical interference is reduced, but connector wear increases
Solution Approach 1:
The pulley system acts as a force-distributing intermediary that converts concentrated tension forces into distributed forces along the cable path. This allows the cable to maintain adequate tension to prevent slack and interference while the pulleys themselves absorb and redirect the mechanical stress, protecting connectors from direct wear.
Solution Approach 2:
The pulley system pre-establishes the cable routing path and tension distribution before connectors are subjected to operational stresses. By configuring the pulley arrangement in advance, the system pre-lays the cable along optimal paths that minimize mechanical interference while distributing tension forces away from connector interfaces.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system ensures low-loss, reliable fiber optic connections by maintaining consistent tension and reducing mechanical wear, enhancing the durability and efficiency of fiber optic connections in high-density environments.
Implementation Method 1
spring-loaded mechanisms to maintain optimal cable tension
Implementation Method 2
spring-loaded mechanisms to maintain optimal cable tension
Implementation Method 3
A fiber optic tensioning system utilizing a combination of fixed and movable pulleys
Implementation Method 4
low friction through guides
Implementation Method 5
combination of fixed and movable pulleys with spring-loaded mechanisms to maintain optimal cable tension
Data Source
AI summary
A fiber optic cable tray system with a three dimension array of pulleys is disclosed, comprised of a central, stacked linear array of flexible, low friction through guides attached to substrate, and a multiplicity of the length buffers arrayed on the substrate, wherein the length buffers each include a spring-loaded moving sled with a multiplicity of freely rotating pulleys on a moving common shaft, and a spaced-apart fixed common shaft with an equal multiplicity of freely rotating pulleys thereon, wherein the fiber optic cable wraps in a repeated circuit around opposing sets of pulleys on the moving shaft and on the fixed shaft and is routed through one of the low friction through guides to a fiber optic connector at the distal fiber end. Multiple identical trays can be stacked on top of one another within a common housing, to produce modules with a number of cables in multiples of 12.