Optical Connection Assembly With Deformable Hole Projections
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Solution Overview
Problem
Existing optical connection assemblies face challenges in achieving high positioning accuracy between ferrules and receptacles due to limitations in dimensional tolerances of guiding holes, which hinder precise alignment and insertion of guiding pins.
Innovation Solution
The optical connection assembly incorporates a protrusion from one component inserted into a hole in another component, with an inner surface featuring projections that fill gaps and deform to ensure precise alignment, using materials with lower hardness to facilitate insertion and maintain positional accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If guiding pins are inserted into guiding holes for positioning, then positioning function is achieved, but positioning accuracy is insufficient due to dimensional tolerance limitations
Solution Approach 1:
The patent changes the physical state of the hole's inner surface from smooth to rough by forming projections that protrude from the inner surface. This parameter change in surface morphology enables the protrusions to fill gaps between the guiding pin and hole wall, eliminating displacement and improving positioning accuracy while maintaining insertion reliability.
Solution Approach 2:
The patent applies local quality by forming projections only at specific locations on the inner surface of the hole where gap filling is needed. These projections are distributed along the insertion direction and at specific radial positions to optimally contact the guiding pin, providing localized gap filling without requiring the entire hole surface to be modified.
2Manufacturing precision
If the inner diameter of guiding holes is reduced to improve positioning accuracy, then positioning precision improves, but insertion difficulty increases
Solution Approach 1:
The patent changes the surface morphology parameter of the hole's inner surface by forming projections that protrude from it. This allows the hole to maintain a smaller inner diameter for precision while the projections provide mechanical guidance and reduce friction during insertion, making insertion easier despite the reduced diameter.
Solution Approach 2:
The projections act as intermediary elements between the guiding pin and the hole wall. They provide a mechanical interface that facilitates smooth insertion by distributing contact forces and reducing direct friction between the pin and hole surface, even when the hole diameter is reduced for precision.
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
This configuration enhances the positional accuracy between optical connection components by reducing displacement and ensuring reliable insertion, allowing for precise optical coupling of optical fibers to circuit board input-output portions.
Implementation Method 1
an inner surface of the hole includes at least one projection projecting from the inner surface toward the protrusion
Data Source
AI summary
An optical connection assembly of the present disclosure includes a first optical connection component, a second optical connection component configured to be connected to the first optical connection component, and a positioning structure configured to maintain relative positions between the first optical connection component and the second optical connection component. The positioning structure includes a protrusion protruding from the first optical connection component, and a hole formed in the second optical connection component and into which the protrusion is inserted. An inner surface of the hole includes at least one projection projecting from the inner surface toward the protrusion.