Modular Device Latch Assembly for Torque and Pressure Relief
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Solution Overview
Problem
Existing latch assemblies for securing electronic devices in computing systems often apply excessive torque, risking damage to mechanical features of the devices and chassis, and fail to manage fluid pressure buildup effectively.
Innovation Solution
A latch assembly design incorporating a traveling body, latch pawl, and spring device, which controls force application and allows for controlled insertion and movement of electronic devices, using a spring device to distribute force and accommodate fluid pressure changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a latch assembly applies high torque to secure an electronic device in a chassis, then the securing strength is improved, but the mechanical features of the electronic device and chassis may be damaged
Solution Approach 1:
The latch assembly incorporates a compliant mechanism that acts as a cushion between the fastener and the electronic device. This compliant mechanism deformable under load, absorbing excess torque before it reaches the mechanical features of the electronic device and chassis. The cushioning effect prevents damage while maintaining secure attachment.
Solution Approach 2:
The latch assembly changes the mechanical parameters of force transmission by introducing a compliant mechanism with controlled flexibility. This mechanism allows the system to adapt the applied torque dynamically - providing high securing strength when needed while automatically reducing torque when damage risk is detected, thus resolving the contradiction between strength and damage prevention.
2Stability of the object's composition
If a latch assembly rigidly secures an electronic device in a chassis, then the stability is improved, but fluid pressure buildup cannot be relieved
Solution Approach 1:
The latch assembly transitions from a rigid static connection to a dynamic compliant connection. The compliant mechanism can deform in response to fluid pressure changes while maintaining overall stability. This dynamic behavior allows the system to accommodate pressure buildup by allowing controlled movement, preventing damage while maintaining secure attachment.
Solution Approach 2:
The compliant mechanism serves as a cushion that absorbs fluid pressure buildup before it can cause damage. The mechanism's flexibility allows it to deform under pressure, providing a pressure relief pathway while maintaining the secure connection between the electronic device and chassis.
3Device complexity
If a latch assembly uses a simple fastening mechanism, then the device complexity is reduced, but excessive torque cannot be controlled
Solution Approach 1:
The latch assembly introduces a compliant mechanism as an intermediary between the fastener and the electronic device. This intermediary component simplifies the overall control system while providing sophisticated torque control through its inherent mechanical compliance. The compliant mechanism automatically regulates force transmission without requiring complex electronic sensors or actuators.
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
The design minimizes torque-related damage, ensures proper mating of connectors, and allows for movement to relieve fluid pressure, enhancing the reliability and durability of electronic device integration within computing systems.
Implementation Method 1
a spring device to distribute force applied to the electronic device
Implementation Method 2
allows movement of the electronic device within the chassis to relieve fluid pressure that may build up between the electronic device and the chassis
Data Source
AI summary
A latch assembly includes a latch body, a fastener longitudinally inserted through the latch body, a traveling body, a latch pawl, and a spring device. The fastener includes a head and a shank. The shank includes a thread portion and a second portion, with the second portion disposed between the thread portion and the head. The traveling body is threaded onto the thread portion of the shank such that the traveling body longitudinally traverses the thread portion as the fastener is rotated. The latch pawl is pivotally coupled to the traveling body and pivots while engaging and disengaging the latch body. The spring device is disposed on the shank between the head and the latch body. The spring device surrounds the second portion of the shank.