I/O Module Latching Mechanism for Reliable Connection
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Solution Overview
Problem
Conventional I/O module connection techniques face challenges in reliability and user accessibility, particularly due to complex installation and servicing processes, especially in hard-to-reach locations, leading to suboptimal connection reliability.
Innovation Solution
A latching mechanism for I/O modules that includes a latch element with lateral latching extensions and a release lever, along with counterbalanced integral spring elements, which secures and easily releases the I/O module from a terminal base, enhancing module retention and user accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional latching mechanism with multiple steps is used to secure the I/O module to the terminal base, then connection reliability is improved, but installation and servicing complexity increases
Solution Approach 1:
The latching mechanism is segmented into distinct functional components: a latch element with lateral extensions that engage with the terminal base, and a separate release lever that actuates the latch. This segmentation allows the securing function to be reliable while the release function remains simple and accessible.
Solution Approach 2:
The release lever serves as an intermediary element between the user and the latch mechanism. By providing a lever that can be easily manipulated from the front of the device, it mediates the complex latch release action, making servicing simple even though the underlying latching mechanism is robust.
2Adaptability or versatility
If the I/O module is disposed in hard-to-reach locations to optimize system layout, then system integration is improved, but user accessibility deteriorates
Solution Approach 1:
The release function is extracted from the rear latching mechanism and brought to the front of the I/O module through the release lever. This allows users to access and operate the module from the front, eliminating the need to reach behind the terminal base while maintaining secure installation.
Solution Approach 2:
Instead of requiring users to access the latching mechanism from the rear where the module is installed, the release lever is positioned at the front of the module. This inverts the conventional approach where the securing mechanism is accessed from the installation side, thereby improving accessibility without compromising system layout flexibility.
3Reliability
If multiple attachment steps are used to ensure reliable connection, then module retention is improved, but installation time increases
Solution Approach 1:
The latch element is pre-configured with lateral extensions that automatically engage with corresponding features on the terminal base during insertion. This preliminary engagement action ensures reliable retention is established during the insertion process itself, eliminating the need for additional securing steps and reducing installation time.
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 proposed solution improves connection reliability and user accessibility by simplifying the installation and servicing of I/O modules, ensuring secure attachment and easy detachment, even in confined spaces.
Implementation Method 1
a pair of counterbalanced integral spring elements in the input/output module that urge the latch element to a biased latched position
Data Source
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AI summary
An input/output (I/O) device for an automation control system may include a terminal base configured to physically and communicatively connect with an I/O module. The I/O module may include I/O communication circuitry and a latching mechanism that may allow the securing or releasing of the I/O module from the terminal base. The latching mechanism may include a release lever urged to a biased latched position by integral springs and a latch element with latching extensions configured to interact with the terminal base.