Optical Transceiver Shield Finger Hooking Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing optical transceivers face challenges in securely fastening the shield finger to the housing, leading to potential detachment and assembly issues, which affect electromagnetic interference shielding and reliability.
Innovation Solution
The optical transceiver design incorporates a shield finger with tabs that are securely hooked into a pocket on the lid, featuring acute angles that correspond to the slopes of the pocket, along with an elastic member for enhanced contact and a unique assembly mechanism involving a gasket and screw engagement, ensuring secure fastening and effective shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shield finger is fastened to the housing using conventional methods, then the assembly is simple, but the shield finger may detach and electromagnetic interference shielding is compromised
Solution Approach 1:
The fastening structure is segmented into multiple independent tabs on the shield finger that correspond to multiple pockets on the lid. Each tab-pocket pair provides an independent attachment point, distributing the fastening function across multiple locations to enhance overall reliability while maintaining structural simplicity.
Solution Approach 2:
The tab is nested within the pocket structure, where the tab fits into the pocket formed by two slopes on the lid. This nested configuration ensures the shield finger remains securely attached to the housing while allowing for easy assembly and disassembly when needed.
2Reliability
If the tab is bent in acute angles corresponding to the slopes of the pocket, then the hooking is secure, but the manufacturing precision requirements increase
Solution Approach 1:
The tab is designed with specific local geometric characteristics - acute angles at specific locations that correspond to the slopes of the pocket. This local quality enhancement ensures secure hooking at the critical attachment points while the rest of the structure maintains standard manufacturing tolerances.
Solution Approach 2:
The tab and pocket are designed with asymmetric acute angles rather than symmetric right angles. The acute angles create a directional insertion path that guides the tab into the pocket, providing self-aligning characteristics that reduce the impact of manufacturing variations and improve assembly reliability.
3Reliability
If the pocket is formed by two slopes extending from the lid surface, then the tab hooking is secure, but the lid structure complexity increases
Solution Approach 1:
The pocket structure is segmented into two distinct slopes rather than a single complex curved surface. This segmentation simplifies the manufacturing process while creating an effective retention mechanism where the two slopes work together to secure the tab in place.
Solution Approach 2:
Instead of creating a complex retention mechanism that prevents tab removal, the design uses simple slopes that guide the tab in during assembly but naturally resist removal in the opposite direction. The geometry is inverted to provide secure retention through the insertion path itself rather than through additional locking features.
Data Source
AI summary
A pluggable optical transceiver is disclosed where the optical transceiver provides a housing, a lid, and a shield finger. The lid and the shield finger are assembled with the housing such that the shield finger fastens the lid against the housing. The housing provides a pocket that receives an end of the shield finger. The pocket provides negative slopes to gradually widen the cross section thereof as advancing a bottom of the pocket. The shield finger provides a tab in an end thereof, where the tab is bent inward to be hooked with the negative slope of the pocket.