PCB Positioning Mechanism With Compressible Structure
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Solution Overview
Problem
The assembly of electronic modules is challenging due to size limitations and tolerance variations in printed circuit board (PCB) construction, making it difficult to accurately secure the internal circuit board within the module.
Innovation Solution
The implementation of a PCB positioning mechanism that includes a solderable plate with a compressible structure, which is attached to the PCB and secured by posts in the module's shell, allowing for automated positioning and securing of the PCB without the need for screws or fasteners, thereby addressing manufacturing tolerances and assembly complexities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional securing methods (screws or fasteners) are used to secure the PCB, then the PCB can be firmly fixed within the module, but the assembly process becomes complex and time-consuming, and automated assembly becomes difficult
Solution Approach 1:
The patent replaces traditional mechanical fastening systems (screws, clips, or fasteners) with a simplified mechanical interference fit system. The PCB includes positioning features that directly engage with corresponding features in the module housing, eliminating the need for separate fastening components and enabling automated assembly through simple insertional engagement.
Solution Approach 2:
The PCB positioning mechanism is designed to be self-securing through inherent mechanical features on the PCB itself. The positioning features on the PCB automatically engage with the module housing when the PCB is inserted, providing self-alignment and self-securing functionality without requiring external fastening operations or additional components.
2Manufacturing precision
If traditional securing methods are used, then the PCB can be firmly fixed, but manufacturing tolerance variations in PCB construction make accurate positioning and securing difficult
Solution Approach 1:
The patent incorporates positioning features with adjusted geometric parameters that are less sensitive to manufacturing tolerance variations. The positioning features include elements such as positioning ribs, grooves, or holes with enlarged clearance or flexible geometry that can accommodate variations in PCB manufacturing tolerances while maintaining accurate positioning and secure attachment.
3Volume of moving object
If the module size is reduced to meet space limitations, then the module becomes more compact, but it becomes increasingly difficult to accurately secure the internal circuit board within the module
Solution Approach 1:
The patent integrates the PCB positioning features directly into the PCB structure and module housing, creating a nested arrangement where positioning elements are built-in rather than added as separate components. This nested design minimizes the space required for PCB securing mechanisms while maintaining positioning accuracy, allowing compact module dimensions without sacrificing securing 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 solution enables quick and automated installation and removal of the PCB, reduces assembly costs and time, and eliminates issues related to manufacturing tolerances, ensuring secure positioning within the electronic module.
Implementation Method 1
the plurality of posts compress the plurality of PCB positioning mechanisms such that the PCB is substantially secured
Implementation Method 2
a compressible structure attached to the solderable plate
Data Source
AI summary
In one example embodiment, a printed circuit board positioning mechanism includes a solderable plate and a compressible structure attached to the solderable plate.