PCB Retention Assembly for Expansion Module
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The use of traditional screw-based mounting systems for expansion modules in computing devices reduces the available signal routing paths on printed circuit boards, limiting their functionality.
Innovation Solution
A retention assembly with a support member and a locking mechanism that secures the expansion module without obstructing signal routing paths, using a sliding or rotating locking member to stabilize the module on the printed circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional screw-based mounting systems are used to secure expansion modules, then the expansion module is firmly secured to the printed circuit board, but the available signal routing paths on the printed circuit board are reduced
Solution Approach 1:
The patent removes the traditional screw-based mounting system from the printed circuit board entirely. Instead, it uses a retention assembly that includes a retention member extending from the PCB and a locking member that engages with the expansion module, thereby extracting the harmful mounting mechanism while preserving signal routing paths.
Solution Approach 2:
The patent introduces a retention assembly as an intermediary mechanism between the printed circuit board and the expansion module. This retention assembly includes a retention member and a locking member that work together to secure the module without requiring direct screw mounting on the PCB, thus mediating the connection while preserving signal integrity.
2Strength
If screw mounting holes are created on the printed circuit board, then the expansion module can be mechanically secured, but the signal routing path length is reduced
Solution Approach 1:
The patent segments the mounting function from the signal routing function. The retention assembly is divided into a retention member (secured to PCB via soldering) and a locking member (engages with expansion module), allowing mechanical securing to be achieved without creating mounting holes that would interrupt signal paths.
Solution Approach 2:
The patent moves the mechanical securing mechanism from the two-dimensional plane of the PCB surface (where screw holes would be) to a three-dimensional retention assembly that extends vertically from the PCB. This dimensional change allows securing without sacrificing the planar signal routing paths.
3Reliability
If traditional mounting methods are used, then the expansion module is securely fixed, but the manufacturing process becomes more complex due to additional mounting holes
Solution Approach 1:
The patent merges the retention member and locking member into a integrated retention assembly. The retention member is secured to the PCB through existing soldering processes, and the locking member engages with the expansion module, combining multiple securing functions into a single assembly that simplifies manufacturing.
Solution Approach 2:
The retention assembly serves multiple functions: the retention member provides structural support and electrical connection to the PCB, while the locking member provides mechanical securing of the expansion module. This multi-functionality eliminates the need for separate screw mounting operations.
Data Source
AI summary
Example implementations relate to a retention assembly. One example retention assembly includes a support member extending from a printed circuit board. The support member includes a body region having a slot and a first flange extending from the body region. The retention assembly also includes a locking member slidably coupled to the support member via the slot. The locking member includes a second flange. The second flange includes a protruded region, and wherein the protruded region and the first flange are to secure a proximal end of expansion module.