Fiber Optic Connector Caps with Sealing Mechanisms for Contamination Control
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Solution Overview
Problem
Optical fiber connectors often arrive at installation sites contaminated, requiring field cleaning due to inadequate protection by dust caps, which prioritizes physical damage prevention over contamination protection.
Innovation Solution
A fiber optic cable assembly with a cap apparatus that includes a sealing mechanism, such as a mechanical seal with packing or adhesive tape, to protect the precision mating surfaces of the connector from contamination, allowing for effective cleaning and sealing of the connector before installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If dust caps are applied to fiber optic connectors in the factory, then physical damage protection is improved, but contamination protection deteriorates
Solution Approach 1:
The cap apparatus is divided into distinct functional segments: a cap body that provides physical protection and a separate sealing apparatus (such as adhesive tape or mechanical seal) that specifically addresses contamination. This segmentation allows each component to optimize its specialized function without compromising the other.
Solution Approach 2:
The invention merges the cap and sealing apparatus into an integrated cap apparatus assembly that is applied to the connector as a unified protective system. The sealing apparatus is positioned within the cap body, creating a combined structure that simultaneously provides both physical damage protection and contamination protection.
2Object-affected harmful factors
If field cleaning process is required, then contamination protection is improved, but loss of time increases
Solution Approach 1:
The sealing apparatus is applied to the connector in the factory before shipment, performing the contamination protection function in advance. This preliminary action eliminates the need for time-consuming field cleaning operations, as the connector arrives at the installation site already sealed and protected from contamination.
Solution Approach 2:
The sealing apparatus uses disposable sealing materials (such as adhesive tape) that are applied once in the factory and remain effective throughout transport and storage. These inexpensive sealing elements provide long-lasting contamination protection without requiring maintenance or replacement at the installation site.
3Object-affected harmful factors
If sealing mechanism is added to cap apparatus, then contamination protection is improved, but device complexity increases
Solution Approach 1:
The sealing apparatus utilizes flexible sealing elements such as adhesive tape or thin film membranes that can be easily integrated into the cap body structure. These flexible sealing components conform to the connector geometry and provide effective contamination protection without adding significant structural complexity to the cap apparatus.
Solution Approach 2:
The sealing apparatus acts as an intermediary element between the cap body and the connector, providing contamination protection through a simple interface. The sealing material serves as a mediator that seals the interface without requiring complex mechanical arrangements, thereby maintaining cap apparatus simplicity while achieving effective contamination protection.
Data Source
Figure 1~2
Figure 3A~3C
Figure 4~5
AI summary
A cap apparatus is mounted to a connector having a ferrule supporting optical fiber(s). A sealing apparatus is cooperatively configured with the cap apparatus for protecting an end face of the ferrule. The cap apparatus includes a body having opposite ends between which a cavity extends. The opposite ends of the body respectively define first and second openings to the cavity. A portion of the fiber optic connector extends through the first opening and into the cavity. The cap apparatus includes a cover mounted to the body and at least partially obstructing the second opening, wherein the end face of the ferrule is positioned within the cavity at a location spaced from the cover. The sealing apparatus is positioned between at least a portion of the cover and the end face of the ferrule.