Tool-less Latching Mechanism for Expansion Card Mounting
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Solution Overview
Problem
Traditional methods for mounting expansion cards in computing devices are cumbersome, requiring tools and potentially prone to breakage, and are difficult to automate, especially in systems that require frequent upgrades or have limited space.
Innovation Solution
A tool-less latching mechanism anchored to a printed circuit board, utilizing a compression spring to maintain a locked position, allowing for easy installation and removal of expansion cards without the need for additional tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional screw mounting methods are used, then expansion cards can be securely mounted, but the process requires tools and time for installation and removal
Solution Approach 1:
The mounting system is divided into separate functional components: a latch member with arm and grip, a base member with aperture, and a spring member. This segmentation allows the latch to be actuated independently for quick card removal without requiring tools to manipulate screws, directly addressing the time loss issue while maintaining secure mounting.
Solution Approach 2:
The latch member is designed to be dynamically movable between locked and unlocked positions. The arm can pivot within the aperture, and the grip can be actuated to compress the spring and move the arm away from the expansion card. This dynamic mechanism enables rapid card removal by simply pressing the grip, eliminating the time-consuming screw loosening process.
2Extent of automation
If traditional screw mounting methods are used, then expansion cards can be securely mounted, but additional tools are required and automation is difficult
Solution Approach 1:
The latch mechanism is designed to be self-actuating through the spring-loaded arm that automatically engages with the expansion card when the grip is released. The spring member provides the necessary force to return the arm to the locked position without requiring additional actuators or complex control systems, making the mechanism suitable for automation while keeping device complexity low.
Solution Approach 2:
The tool requirement is completely extracted from the mounting system. The grip member allows direct manual actuation without any tools, and this simple mechanical interface can be easily replicated by robotic systems. By removing the screw and tool dependency, the system achieves high automation potential with minimal complexity.
3Volume of moving object
If expansion cards are installed in recessed areas, then space is optimized, but traditional tools cannot reach the cards
Solution Approach 1:
The latch mechanism transitions the mounting interaction from a vertical screw-driving motion to a horizontal gripping motion. The grip member extends outward from the recessed area, allowing actuation from the front face of the device rather than requiring access to the rear mounting holes. This dimensional change in the actuation vector enables easy operation despite recessed card installation.
4Adaptability or versatility
If frequent upgrades are performed, then system flexibility is improved, but traditional mounting methods are prone to breakage
Solution Approach 1:
The spring member is pre-loaded to provide cushioning force that absorbs shock and stress during card insertion and removal. This beforehand cushioning prevents sudden impact forces from being transmitted to the latch arm and grip, reducing the risk of breakage during frequent upgrades while maintaining secure holding force.
Solution Approach 2:
The mounting force parameter is dynamically adjusted through the spring mechanism. The spring provides continuous contact force to maintain secure mounting during normal operation, but allows controlled release when the grip is actuated. This parameter change from static screw tension to dynamic spring force reduces stress concentration and breakage risk during frequent card swaps.
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
Facilitates faster and easier swapping of expansion components by providing a secure, tool-less mounting system that reduces the risk of damage and simplifies automation, enabling secure and efficient upgrades in computing systems.
Implementation Method 1
a compression spring wrapped around an arm of the latch such that the compression spring exerts tension to maintain a locked position of the latch
Data Source
AI summary
An expansion card latching mechanism may include a base anchored to a printed circuit board. The latching mechanism may also include a latch coupled to the base such that a proximal end of the latch locks a proximal end of an expansion card to a fixed position on the printed circuit board. In addition the latching mechanism may include a compression spring wrapped around an arm of the latch such that the compression spring exerts a tension to maintain a locked position of the latch. Various other apparatuses, systems, and methods are also disclosed.