Fiber Optic Spooling Tool with Friction Cap
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Solution Overview
Problem
Fiber optic cabling installations at user premises require multiple technicians to unwind and route cables, making the process time-consuming and labor-intensive, as it is challenging for a single installer to manage cable payout without damaging the cable or its fibers.
Innovation Solution
A spooling tool with a base plate and an elongate arbor that secures the cable drop box, allowing it to pivot and featuring a cap mechanism to apply friction, enabling a single installer to unwind and route fiber optic cables without damage by controlling the cable payout speed and preventing the box from free wheeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single installer attempts to unwind and route the cable manually, then labor requirements are reduced, but the risk of cable damage increases due to inability to control payout speed and routing properly
Solution Approach 1:
The spooling tool acts as an intermediary device between the cable and the installer. It includes a spool mechanism with a brake system that controls cable payout speed, and a guiding structure that routes the cable through a riser shaft. This intermediary device enables a single installer to control the cable unwinding process without damaging the cable, as the tool manages the forces and routing that would otherwise require multiple people.
Solution Approach 2:
The spooling tool is designed to be self-regulating through its brake mechanism that controls the spool's rotation speed. As the installer pulls the cable, the brake automatically adjusts to maintain controlled payout without requiring additional personnel to manage the spool. The tool serves itself by converting the installer's pulling action into controlled cable deployment through the brake-spool system.
2Reliability
If multiple technicians are used to hold the spool and route the cable, then cable damage is prevented, but installation time and labor costs increase
Solution Approach 1:
The spooling tool serves as a mechanical intermediary that automates the coordination between cable payout and routing. The integrated brake system and guiding structure allow one person to perform functions that previously required two or more people, thereby reducing installation time while maintaining cable integrity through controlled deployment.
Solution Approach 2:
The manual mechanical coordination between multiple technicians is replaced by a mechanical brake system on the spool. Instead of relying on human operators to synchronize their actions, the brake mechanism automatically controls the spool's rotation to match the cable payout rate, eliminating the need for multiple workers and reducing installation time.
3Ease of operation
If the spool is allowed to free wheel during cable payout, then cable tension is reduced, but control over payout speed is lost leading to potential cable damage
Solution Approach 1:
The brake mechanism changes the friction parameter between the spool and cable during payout. By adjusting the brake force, the system transitions from free-wheeling (low friction) to controlled payout (optimal friction level). This parameter change enables the installer to maintain cable tension within safe limits while preventing free-wheeling that would cause uncontrolled payout speeds and potential damage.
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
Enables a single installer to efficiently unwind and route fiber optic cables from a spool or drop box without damaging the cable, reducing the need for multiple technicians and streamlining the installation process.
Implementation Method 1
A drag mechanism arranged to apply a frictional force on the box sufficient to inhibit the box from free wheeling on the arbor
Data Source
AI summary
A spooling tool for paying out a fiber optic cable prewound on a spool region of a drop box or on an associated spool, when installing a cable at a user's premises. In one embodiment, the tool includes a base plate and a stud projecting from one side of the plate. An elongate arbor has one end secured to the stud in such a manner as to support the arbor perpendicular to the base plate. The arbor is dimensioned to pass through an axial passage in the box so that the box pivots on the arbor when the cable is unwound by an installer. A cap mechanism at the opposite end of the arbor retains the drop box on the arbor, and applies enough drag on the box to inhibit it from free wheeling on the arbor.