Electronic Module Latching Mechanism With Retractable Pin
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Solution Overview
Problem
Existing latching mechanisms for electronic modules in host devices either require separate extraction tools, leading to increased costs and compatibility issues, or have flexible receptacle edges that can cause electromagnetic interference.
Innovation Solution
A latching mechanism with a retractable engagement pin, automatically reengaging when the handle is released, and capable of insertion without handle manipulation, using a latch, latch return spring, and release slide to facilitate easy insertion and extraction, even in high-density host devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate extraction tool is used to retrieve the module, then the latching mechanism can securely hold the module, but the cost increases and compatibility issues arise
Solution Approach 1:
The latching mechanism is designed to be self-servicing through the integrated handle that allows users to manually actuate the latch mechanism. The handle enables the same component to both secure and release the module without requiring separate extraction tools, making the system self-contained and user-operable.
Solution Approach 2:
The handle is merged with the latching mechanism structure, combining the securing function and the release function into a single integrated component. This integration eliminates the need for separate extraction tools while maintaining secure holding capability through the engagement pin and latch arm design.
2Ease of operation
If the receptacle leading edge is made flexible to enable insertion and extraction, then the module can be easily inserted and removed, but electromagnetic radiation is unintentionally emitted causing interference
Solution Approach 1:
The latching function is segmented from the receptacle structure itself and placed into a separate, rigid latch mechanism. The engagement pin and latch arm provide the necessary flexibility and movement for insertion and extraction without requiring the receptacle leading edge to be flexible, thereby preventing electromagnetic radiation emission.
Solution Approach 2:
The latch mechanism acts as an intermediary between the rigid receptacle and the module. It provides the flexible movement needed for insertion and extraction while the rigid receptacle structure maintains electromagnetic shielding integrity, preventing radiation emission.
3Reliability
If the engagement pin remains fixed to facilitate secure latching, then the module is securely held, but the handle cannot be pulled to release the module
Solution Approach 1:
The engagement pin is designed to be dynamic rather than fixed - it can move between extended and retracted positions. The latch arm pivots on the latch body, allowing the engagement pin to extend for secure latching and retract when the handle is pulled, providing both secure holding and easy release capabilities.
Solution Approach 2:
The latch mechanism is pre-configured with the engagement pin in an extended position that automatically engages with the receptacle upon module insertion. The spring mechanism is pre-loaded to maintain the engaged state, and the handle is pre-positioned to enable easy release when needed.
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
Enables secure retention and easy removal of modules without additional tools, reduces electromagnetic interference, and simplifies insertion and extraction processes in high-density environments.
Implementation Method 1
The latch return spring is configured to bias the latch in the latched position
Implementation Method 2
The slide ramp is configured to engage the latch arm as the release slide is slid away from the engagement pin, which causes the latch to rotate from the latched position to the unlatched position
Data Source
AI summary
Latching mechanisms for electronic modules. In one example embodiment, a latching mechanism for an electronic module includes a latch, a latch return spring, and a release slide. The latch is configured to rotate between a latched position and an unlatched position. The latch includes a latch arm on a first end of the latch and an engagement pin on a second end of the latch. The latch return spring is configured to bias the latch in the latched position. The release slide includes a slide ramp. The slide ramp is configured to engage the latch arm as the release slide is slid away from the engagement pin, which causes the latch to rotate from the latched position to the unlatched position.