Inclined Support for Low-Stress Fiber Splice Module Pivoting
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Solution Overview
Problem
Existing splice module stacks with pivoting modules face challenges in optimizing cable routing and providing adequate guidance during pivoting movements, leading to undesirable tensile and bending loads on fiber optic cables, which can result in suboptimal leverage ratios and mechanical stress.
Innovation Solution
A latch system is integrated into the housing of the splice module stack, featuring latches on the inside opposite the pivot axis to support modules remotely, allowing them to slide or roll along, combined with a bevel or rolling element design, and a step on the rear housing for additional support, ensuring robust handling and space efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If splice modules are designed to pivot around a pivot axis for space-efficient storage, then space utilization is improved, but the leverage ratio becomes unfavorable and mechanical stress increases
Solution Approach 1:
The patent introduces a vertical support dimension by positioning support elements on the rear wall of the housing, perpendicular to the pivot axis. This creates a three-dimensional support structure that counters the unfavorable leverage ratio caused by the horizontal pivot movement, allowing modules to be supported at multiple points in space rather than relying solely on the pivot axis connection.
Solution Approach 2:
The patent introduces intermediary support elements (support blocks and corresponding support surfaces) between the splice modules and the housing rear wall. These intermediaries distribute the mechanical loads and reduce stress concentrations at the pivot axis, acting as mediators that transfer forces more evenly across the module-housing interface.
2Length of stationary object
If the vertical height of splice modules is reduced for efficient space use, then space efficiency is improved, but the leverage ratio worsens and mechanical stability decreases
Solution Approach 1:
By reducing vertical height while introducing rear-wall support elements, the patent compensates for the reduced stability in the vertical dimension through support in the horizontal and depth dimensions. The support elements create a distributed support system that maintains mechanical stability despite the compact vertical profile.
Solution Approach 2:
The patent applies local quality by providing support elements at specific locations (rear wall positions) rather than uniform support throughout. The support surfaces are positioned to contact specific regions of the splice modules, creating localized support zones that enhance stability where mechanical stresses are highest.
3Ease of operation
If PTFE coating is applied to reduce friction during pivoting, then ease of operation is improved, but material cost and complexity increase
Solution Approach 1:
The patent replaces the expensive and complex PTFE coating with simpler, more economical materials such as standard plastics or metals with basic lubrication. These alternative materials achieve sufficient pivoting smoothness without requiring specialized coatings, thereby reducing material cost and manufacturing complexity while maintaining operational ease.
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a splice module stack for fiber optic cables, wherein individual pivotable splice modules 1 are supported on a side of a housing 11 remote from a pivot axis A by latches 12. Optionally, additional supporting steps 14 can also be provided on the rear of the housing 13.