Pluggable Module Housing With Offset Seating Protrusions
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Solution Overview
Problem
Existing communication module designs lack efficient mechanisms for securely and precisely positioning PCBs within housings, leading to potential misalignment and contamination risks during assembly, especially when dealing with optoelectronic transceivers.
Innovation Solution
The design incorporates specific seating, locking, and ramp protrusions on the housing to guide and secure the PCB, ensuring precise alignment and preventing contamination through a combination of offset surfaces and crossbars, which facilitate secure fastening and optical fiber retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional PCB mounting methods are used in housing, then assembly is simpler, but positioning precision and alignment accuracy deteriorate
Solution Approach 1:
The housing structure is segmented into multiple functional protrusions: first seating protrusion with first seating surface, second seating protrusion with second seating surface, and locking protrusion with locking surface. Each protrusion performs a specific positioning or securing function, allowing precise PCB positioning through distributed geometric constraints rather than a single complex mounting mechanism.
Solution Approach 2:
The solution transitions from traditional planar mounting to three-dimensional positioning by utilizing offset seating surfaces and vertical locking surfaces. The first and second seating surfaces are offset relative to each other, creating multi-dimensional constraints that precisely locate the PCB in space while maintaining structural simplicity.
2Stability of the object's composition
If PCB is securely fastened with multiple fasteners, then positioning stability improves, but manufacturing complexity and assembly time increase
Solution Approach 1:
The housing structure provides self-aligning and self-locating features through its geometric protrusions and offset seating surfaces. The PCB naturally positions itself against these features during assembly, eliminating the need for complex fastening mechanisms or precision alignment procedures, thereby improving both stability and assembly speed.
Solution Approach 2:
The housing pre-configures the positioning geometry with offset seating surfaces and locking surfaces before assembly begins. This preliminary structural arrangement ensures that when the PCB is installed, it automatically achieves precise positioning and stable fixation without requiring complex real-time adjustment or multiple fastening steps.
3Area of moving object
If PCB usable area is increased, then functional capacity improves, but risk of contamination and misalignment increases
Solution Approach 1:
The first and second seating protrusions act as intermediary positioning elements between the housing and PCB. These geometric features provide precise locators that guide PCB placement, ensuring proper alignment even as PCB size increases. The locking protrusion serves as an intermediary securing mechanism that fixes the PCB without requiring direct extensive contact, reducing contamination risk.
Data Source
AI summary
A housing for a pluggable module may include a first seating protrusion, a second seating protrusion, and a locking protrusion. The first seating protrusion may have a first seating surface facing a first direction. The second seating protrusion may have a second seating surface facing a second direction opposite the first direction. The second seating surface may be positioned parallel to the first seating surface. The second seating protrusion may be offset relative to the first seating surface in a direction parallel and a direction perpendicular to the first seating surface. The locking protrusion may have a locking surface facing the first direction. The locking surface may be positioned parallel to the first seating surface. The locking surface may be offset relative to the first seating surface in the direction perpendicular to the first seating surface.