Optical Fiber Cleaning Device with Sagging Fabric Slots
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Solution Overview
Problem
Existing cleaning devices for optical fiber components often result in fabric tearing or scoring due to high compression loads and poor tensile recovery, especially when cleaning small diameter fiber optic connectors with sharp angles, leading to reduced transmission capacity and contamination.
Innovation Solution
A cleaning device with a card-like support member featuring slotted fabric-retaining structures that allow a free length of hydro-entangled polyester fabric to sag into cleaning slots, providing durable sag and minimal contact with the slot floor, while fabric-retaining structures secure the fabric in place without permanent attachment, enabling effective cleaning without fabric damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fabric is tightly secured to the support member, then the fabric remains stable during cleaning operations, but the fabric is prone to tearing and scoring due to high compression loads
Solution Approach 1:
The support member is divided into multiple cleaning slots, each independently supporting a section of fabric. This segmentation allows the fabric to be divided into separate zones, where each zone can deflect and recover independently under compression loads, reducing stress concentration and preventing tearing across the entire fabric length.
Solution Approach 2:
The fabric is allowed to have different degrees of freedom at different locations. Over the cleaning slots, the fabric can deflect and sag under compression without being constrained, while at the edges and between slots, the fabric-retaining structures provide localized support. This local variation in constraint quality allows the fabric to accommodate high compression loads without tearing.
2Adaptability or versatility
If the fabric is loosely retained on the support member, then the fabric can deflect and conform to connector geometry, but the fabric may shift or become misaligned during cleaning operations
Solution Approach 1:
The fabric-retaining structures are designed to provide dynamic retention rather than rigid fixation. The fabric can move and deflect within controlled limits, allowing it to adapt to different connector geometries, while the retention structures prevent excessive movement or misalignment. This dynamic balance enables both conformability and position stability.
Solution Approach 2:
The cleaning slots act as intermediaries between the fabric and the support member. They allow the fabric to deflect and conform to connector shapes while the slots themselves provide a controlled environment that prevents uncontrolled fabric movement. The slots mediate between the need for fabric flexibility and the need for fabric stability.
3Manufacturing precision
If high compression pressure is applied to clean small diameter connectors with sharp angles, then cleaning effectiveness is improved, but the fabric tears and scores
Solution Approach 1:
The fabric-retaining structures are positioned to provide support before the fabric reaches high-stress areas. By anticipating where compression loads will be applied during cleaning operations, the retention structures are strategically placed to cushion and distribute these loads, preventing fabric tearing before it occurs.
Solution Approach 2:
The system changes the physical parameters of fabric support by transitioning from continuous rigid support to discrete slot-based support. This parameter change allows the fabric to experience controlled deflection and recovery, transforming the stress distribution pattern from concentrated high-stress points to distributed lower-stress areas across multiple slots, thereby preventing fabric damage during high-pressure cleaning.
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 device ensures thorough cleaning of optical fiber tips with reduced risk of fabric tearing or scoring, maintaining transmission capacity by allowing the fabric to conform to the connector's geometry and distribute pressure effectively, while the fabric-retaining structures ensure secure placement without excessive tension.
Implementation Method 1
the fabric to sag into the cleaning slots, providing durable sag and minimal contact with the slot floor
Implementation Method 2
The wipe fabric is held in place by frictional engagement only (either by feed slots or retention members)
Data Source
AI summary
A cleaning device (10, 110, 210) may be a card-like member such as a flap (16, 116), integrally formed with a dispenser container (12), or a slotted member (36) mounted on a stand-alone cleaning device (110). A cleaning wipe fabric (22, 122) has a modulus of stiffness which is high enough to bridge a plurality of cleaning slots (26a-26d, 126a-126d) and hold the fabric out of contact with the slot floor surfaces (26a′), and low enough to be deflected by a fiber optic end being cleaned to sag within the cleaning slot to better enclose and clean the tip of the fiber optic end. Used cleaning fabric (22, 122) can easily be advanced or removed as needed to avoid using the same area of fabric for cleaning more than once.