Small Form Factor Fiber-Optic Connector Dust Cap With Extension Grip
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Solution Overview
Problem
Small form factor fiber-optic connectors lack sufficient space for secure attachment of dust caps, and existing solutions are either too tight or difficult to remove without tools.
Innovation Solution
A dust cap design with a main body featuring cutouts, an extension, and an engagement mechanism that securely attaches to the fiber-optic connector while allowing easy removal by hand, utilizing projections and grooves for anchoring and a push-pull boot for ergonomic handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the dust cap is made smaller to fit VSFF connectors, then it can fit the small connector, but it becomes difficult to grip and remove without tools
Solution Approach 1:
The dust cap is segmented into a compact main body and a separate extension component. The extension acts as a grip aid that can be inserted through cutouts in the connector housing, providing leverage for removal without increasing the overall size of the dust cap itself.
Solution Approach 2:
The extension serves as an intermediary tool between the user's fingers and the dust cap. By inserting the extension through cutouts in the connector housing, it provides mechanical leverage that enables easy removal of the small dust cap without requiring direct gripping of the cap's small surface.
2Reliability
If the attachment mechanism is made stronger to secure the dust cap, then it stays attached firmly, but it becomes difficult to remove by hand
Solution Approach 1:
The attachment mechanism uses a dynamic balance between the engagement features (protrusions fitting into recesses) that provide secure attachment during normal use, and the same features that can be overcome with simple manual force when needed for removal. The engagement is strong enough for reliability but not so strong as to require tools.
Solution Approach 2:
The dust cap's extension is designed to work with the connector housing structure itself. By utilizing existing cutouts in the housing, the extension creates a self-service removal mechanism where the housing features assist in providing leverage points for easy manual removal without requiring additional complex release mechanisms.
3Ease of manufacture
If the dust cap design is simplified to reduce manufacturing complexity, then it is easier to manufacture, but it may lack secure attachment features for small connectors
Solution Approach 1:
The design separates the dust cap into simple geometric components (main body and extension) that can be manufactured using basic molding processes. The segmentation allows each part to be optimized for its specific function while maintaining overall manufacturing simplicity through standard production techniques.
Solution Approach 2:
The dust cap employs asymmetric engagement features where protrusions on one side fit into corresponding recesses on the connector housing. This asymmetric design provides secure attachment through interlocking geometry while maintaining manufacturing simplicity by using standard molding capabilities to create the asymmetric shapes in a single production step.
Data Source
AI summary
A small form factor dust cap for a fiber-optic connector includes a main body having a front portion, a middle portion, a rear portion, and an internal opening extending within the main body from the rear portion toward the front portion, the main body formed by two long side walls joined by a short top wall and an oppositely placed short bottom wall, a pair of cutouts in each of the respective two long side walls and located nearer to one of the short top wall and the short bottom wall, an extension extending rearwardly from the middle portion and having a free end, and an engagement mechanism at the free end of the extension to engage a housing of the fiber optic connector. The dust cap is also combined with a small form factor fiber optic connector.