Fiber Drop Terminal Mounting Plate with Sequential Locking
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Solution Overview
Problem
Conventional fiber drop terminals (FDTs) are large, expensive, inconvenient to install and service, and lack secure access, making them unsuitable for mounting on vertical surfaces in multi-dwelling units (MDUs).
Innovation Solution
A fiber drop terminal assembly with a mounting plate that allows secure mounting to vertical surfaces, featuring a locking mechanism to prevent unauthorized access, where the cover and base must be removed sequentially to dismount the assembly, ensuring secure and convenient installation and access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional FDTs are used, then optical connectivity is provided, but the device is large and expensive
Solution Approach 1:
The FDT is divided into separate components: a mounting plate for wall attachment, a base containing the optical connection elements, and a cover for security. This segmentation allows each component to be optimized independently, reducing overall size and material usage while maintaining functionality.
Solution Approach 2:
The optical connection elements (adapters, splitters, cables) are nested within the base enclosure, which is itself mounted on the wall plate. This nested arrangement maximizes space utilization and minimizes the external footprint of the entire FDT assembly.
2Reliability
If conventional FDTs are used, then optical connectivity is provided, but access is not secure
Solution Approach 1:
The cover is designed with preliminary security features including tamper-evident seals and locking mechanisms that must be activated in a specific sequence. Technicians must first authenticate, then the cover releases in a controlled manner, preventing unauthorized access while maintaining ease of legitimate service.
Solution Approach 2:
The access mechanism transitions from a static locked state to a dynamic controlled-release state. The cover incorporates movable locking elements and sequential release mechanisms that adapt to different access scenarios (authorized technician vs. unauthorized user), providing both security and operational flexibility.
3Ease of operation
If conventional FDTs are used, then optical connectivity is provided, but installation and servicing is inconvenient
Solution Approach 1:
The FDT is divided into separate components: a mounting plate for wall attachment, a base containing the optical connection elements, and a cover for security. This segmentation allows each component to be optimized independently, reducing overall size and material usage while maintaining functionality.
Solution Approach 2:
The mounting plate includes pre-drilled holes and attachment features that simplify wall installation. The base and cover are pre-assembled with alignment features, reducing on-site assembly complexity and installation time.
Data Source
AI summary
There is provided fiber drop terminal (“FDT”) assemblies for providing selective connections between optical fibers of distribution cables and optical fibers of drop cables, such as in multiple dwelling units. The FDT assemblies include a mounting plate that enables the FDT to be conveniently and securely mounted to a generally vertical surface, such as a wall. The mounting plate is structured such that the base of the FDT must be removed before the mounting plate can be removed, and the cover of the FDT is structured that neither the base nor the mounting plate can be removed without first removing the cover. The cover may be selectively locked to the base and/or mounting plate with a locking fastener; therefore, only technicians able to remove the locking fastener may remove the cover, base, and/or mounting plate of the FDT assembly.