Lockable Dust Cap for Fiber Optic Adapter Ingress Protection
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Solution Overview
Problem
Conventional connector assemblies in harsh environments often become unintentionally disconnected due to vibrations, impacts, and exposure to debris, dust, and moisture, which compromises the reliability of telecommunication networks, especially fiber optic connections that require precise alignment.
Innovation Solution
An ingress protected connector with a lockable dust cap and adapter assembly featuring a rotatable locking pin, O-ring seal, and gripping portion, which secures the dust cap to prevent debris and moisture ingress, ensuring secure connections and alignment in harsh conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional connector assembly is used in harsh environments, then the device complexity remains low, but the reliability deteriorates due to unintentional disconnection and contaminant ingress
Solution Approach 1:
The connector assembly is divided into separate functional components: a dust cap with locking mechanism, an adapter assembly with receipt, and a fiber optic connector. The dust cap can be removed when connection is needed and locked back when not in use, providing protection without requiring a permanently complex sealed structure.
Solution Approach 2:
The dust cap transitions from a static protective cover to a dynamic component with rotatable locking pins that engage with locking arms on the adapter assembly. This dynamic locking mechanism allows the dust cap to be securely attached during transport/storage and easily removed when connection is needed, improving reliability without permanent complexity.
2Object-affected harmful factors
If a lockable dust cap with locking mechanism is added, then the protection against contaminants is improved, but the ease of operation deteriorates due to additional locking steps
Solution Approach 1:
The locking function is extracted as a separate mechanism within the dust cap assembly, with locking pins positioned on the distal end that can independently engage with locking arms on the adapter. This allows the locking action to be performed with a simple rotational motion without requiring complex multi-step procedures.
Solution Approach 2:
The locking pins automatically engage with the locking arms on the adapter assembly when the dust cap is inserted, providing self-locking functionality. The visual indicator automatically shows the locked/unlocked state, eliminating the need for users to manually check or operate additional mechanisms.
3Reliability
If a rotatable locking pin with visual indicator is implemented, then the connection security is improved, but the device complexity increases due to additional components
Solution Approach 1:
A visual indicator is integrated into the locking mechanism that changes its visible state based on the locking pin position. When the locking pin rotates to engage the locking arm, the visual indicator provides immediate feedback (such as color change or positional visibility) to confirm the locked state, enhancing connection security without requiring complex electronic or mechanical indicators.
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 solution provides reliable and secure connections by preventing unintentional disconnection and protecting against environmental contaminants, maintaining precise alignment and preventing ingress of unwanted substances, thus enhancing the reliability of telecommunication networks.
Implementation Method 1
an o-ring or seal that is received within a groove formed as part of a lockable dust cap. The O-ring seals an adapter assembly with the lockable dust cap to prevent debris or moisture ingress
Data Source
AI summary
A lockable dust cap is inserted over a proximal end of an adapter assembly. The lockable dust cap has locking arms that secured the dust cap hub to the proximal end of the adapter assembly, and a grip portion that when rotated from an unlocked “0” or locked “1” position the dust cap is secured at the proximal end of the adapter. The dust cap is ingress protected with a seal and polymer shroud that covers the proximal end of the adapter. This helps to prevent moisture or debris ingress into the adapter assembly.