Fiber Optic Connector Assembly RF Shielding and Quick Connect
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Solution Overview
Problem
Existing fiber optic connector assemblies lack RF shielding and have complex, time-consuming, and costly installation processes, especially in challenging environments, due to the use of non-metallic materials and require access to internal components for installation.
Innovation Solution
The development of a fiber optic connector assembly with metallic components for RF shielding and a "quick connect" design allowing rotation and external installation, eliminating the need for splicing or polishing, and using washers or rotational clips for rotational freedom during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If plastic or non-metal materials are used in fiber optic connectors, then the connector is lightweight and easy to manufacture, but RF shielding is inadequate and unwanted RF signals can enter or exit the connector assembly
Solution Approach 1:
The connector assembly uses a composite structure combining plastic housing with metallic components (metallic adapter, metallic sleeve, or metallic washer). This composite approach provides both the lightweight manufacturing benefits of plastic and the RF shielding capabilities of metal, resolving the contradiction between ease of manufacture and RF protection.
2Productivity
If traditional fiber optic cable splicing and polishing methods are used, then precise optical connections are achieved, but the installation process is very time consuming and expensive requiring specialized technicians and sophisticated tools
Solution Approach 1:
The system divides the fiber optic connection into two independent parts: pre-terminated fiber optic cables with factory-made precision connectors, and the connector assembly with coupling mechanism. This segmentation allows factory precision work to be separated from field installation, enabling quick plug-and-play connections without requiring splicing or polishing skills at the installation site.
Solution Approach 2:
The fiber optic cables are pre-terminated with connectors at the factory before installation. This preliminary action performs the precision optical preparation work in advance under controlled conditions, so that during installation only a simple coupling operation is needed, dramatically reducing installation time and skill requirements while maintaining precision.
3Ease of operation
If the connector assembly requires access to the inside of the junction housing for installation, then internal connections can be made, but additional steps are required including removal of shell or cover, making connections inside, and replacing the cover
Solution Approach 1:
The coupling mechanism is extracted from the interior of the junction housing and positioned on the exterior. This allows the entire connector assembly to be installed from outside the housing by simply screwing it onto the housing opening, eliminating the need to open the housing, work inside, and close it again.
4Adaptability or versatility
If the connector assembly is installed in difficult to reach locations such as at the top of a telephone pole or in extreme weather situations, then fiber optic connections can be established, but the complex installation process becomes even more difficult and time consuming
Solution Approach 1:
The connection system is segmented into pre-terminated cables and an external coupling mechanism, creating a simple two-part assembly that can be quickly connected without complex internal work. This simplification makes installation feasible in hard-to-reach locations and adverse weather where time and complexity are critical constraints.
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 effective RF shielding, simplifies and speeds up the installation process, reduces the need for specialized tools and training, and ensures a weatherproof connection, making the assembly quicker, cheaper, and more reliable.
Implementation Method 1
the sleeve is formed from aluminum, steel, or brass... the metallic sleeve ensures that EMI is reduced and prevents RF signals from either entering or exiting the connector assembly
Implementation Method 2
The first threading is configured to matingly engage with a corresponding second threading defined within an opening of a junction housing
Implementation Method 3
The retention assembly axially fixes the adapter relative to the sleeve such that the adapter is rotatable relative to the sleeve
Data Source
AI summary
In one embodiment, a fiber optic connector assembly is provided that includes an adapter defining a first through opening in which a coupler is arranged. A sleeve defines a second through opening dimensioned to receive the adapter, and the sleeve includes a first threading on an axial end. The first threading is configured to matingly engage with a corresponding second threading defined within an opening of a junction housing. A retention assembly is provided between the adapter and the sleeve, and the retention assembly axially fixes the adapter relative to the sleeve such that the adapter is rotatable relative to the sleeve. The embodiments disclosed herein generally protect against electromagnetic interference (EMI), shield against radiofrequency (RF) signals, prevent attenuation of fiber optic cables due to varying rotational capability, and protect the connector assembly from debris and moisture.