Fiber Connector Dust Cap With Controlled Deformation Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional dust caps for fiber optic connectors introduce contamination and misalignment risks, leading to signal degradation due to debris and misalignment, and customer handling often exacerbates these issues.
Innovation Solution
A dust cap designed with an interference fit and varying wall thicknesses to create a seal, coupled with a lensing element for visual fault indication, minimizing contamination and ensuring alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a dust cap is coupled to the ferrule of a fiber optic connector to preserve cleanliness, then the end face is protected from contamination, but the dust cap may introduce additional contamination through contact with the ferrule end face or sides
Solution Approach 1:
The dust cap is divided into multiple wall sections (first wall section, second wall section, third wall section) with different thicknesses and functions. The first wall section has greater thickness to prevent contact with the ferrule end face, while the second and third wall sections have smaller thicknesses to provide sealing without contacting the ferrule sides, thereby eliminating contamination sources while maintaining protective function.
Solution Approach 2:
Different portions of the dust cap have different thickness characteristics tailored to their specific functions: the first wall section has greater thickness for non-contact protection, while the second and third wall sections have reduced thickness for sealing purposes. This localized differentiation allows each section to perform its function without introducing contamination.
2Stability of the object's composition
If the dust cap contacts the sides of the ferrule to provide sealing, then the seal is improved, but contamination may be introduced to the sides of the ferrule
Solution Approach 1:
The sealing function is assigned to specific wall sections (second and third wall sections with smaller thicknesses) rather than having the entire dust cap contact the ferrule. This segmented approach provides necessary sealing while limiting contact area to prevent contamination.
Solution Approach 2:
The dust cap features localized thin wall sections specifically positioned to provide sealing contact with the ferrule sides, while other sections maintain greater thickness to avoid contact. This local quality differentiation enables sealing effectiveness without introducing contamination to the ferrule sides.
3Ease of manufacture
If the dust cap is designed with uniform wall thickness, then manufacturing is simplified, but it cannot simultaneously provide sealing and prevent contact with the ferrule end face
Solution Approach 1:
The dust cap employs varying wall thicknesses in different sections to achieve multiple functions: the first wall section has greater thickness to prevent end face contact, while the second and third wall sections have smaller thicknesses for sealing. This local quality differentiation enables the dust cap to simultaneously provide sealing effectiveness and prevent contamination, overcoming the limitations of uniform thickness design.
Data Source
AI summary
The present disclosure relates to a dust cap that is coupled to a fiber optic connector via an interference fit between the dust cap and a connector housing of the fiber optic connector. The dust cap has a first wall section having a first thickness and a second wall section having a second thickness greater than the first thickness such that when the dust cap is coupled to the connector housing via an interference fit, the first wall section deforms and thereby provides a seal of the fiber optic connector. The dust cap may also include a lensing element.