PLC and Power Supply Interlock via Cam Latch
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Solution Overview
Problem
Traditional interlocking systems for industrial automation and control components are cumbersome, delicate, and expensive, requiring multiple actions for assembly and alignment, which complicates the connection of modules like programmable logic controllers and power supplies.
Innovation Solution
An interlocking system featuring vertical slots and hooks on one module and a latch with a flexible tongue on the other, allowing for a single-action assembly that secures the modules together by sliding hooks into slots and engaging a latch to prevent disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional mechanical interlocking systems are used to connect modules, then the connection is secure and rigid, but the system becomes cumbersome, delicate, expensive, and requires multiple assembly actions
Solution Approach 1:
The patent combines multiple interlocking functions into a single integrated mechanism. The cam-actuated latch system merges the locking, securing, and alignment functions into one component that performs all these operations simultaneously through a single user action, eliminating the need for separate mechanical parts for each function.
Solution Approach 2:
The cam-actuated latch mechanism serves multiple functions: it provides the primary locking action, secures the modules together, and facilitates alignment during assembly. This multi-functional design replaces traditional systems that required separate components for each function, reducing overall system complexity while maintaining connection strength.
2Reliability
If traditional mechanical interlocking systems with multiple parts are used, then the connection is secure, but the assembly process requires significant manipulation and multiple actions
Solution Approach 1:
The cam mechanism is pre-configured to automatically perform the locking and securing actions as the user inserts and releases the latch. The cam's geometric design ensures that the locking surfaces engage in the correct sequence and position, eliminating the need for the user to manually manipulate multiple separate locking components.
Solution Approach 2:
The cam-actuated latch system is designed to automatically complete the interlocking process through the user's single action of inserting and releasing the latch. The cam mechanism self-regulates the engagement sequence and ensures proper alignment, reducing the assembly process to a simple, intuitive motion that anyone can perform without specialized knowledge.
3Adaptability or versatility
If traditional interlocking systems are used, then modules can be connected, but the system is expensive and requires significant manipulation by the user
Solution Approach 1:
The patent integrates multiple interlocking functions into a single cam-actuated latch component, reducing the total number of parts that need to be manufactured, inventoried, and assembled. This consolidation lowers manufacturing costs while maintaining the ability to connect various modules, as the same latch mechanism can accommodate different module types.
Solution Approach 2:
The cam-actuated latch mechanism is designed as a universal component that can secure different types of modules through a standardized interface. This multi-functionality reduces the need for multiple specialized locking mechanisms, thereby lowering overall manufacturing costs while maintaining adaptability across various module configurations.
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 a rigid and secure connection between modules in a single assembly action, reducing complexity and cost by eliminating the need for multiple locking mechanisms and allowing for easy alignment and secure attachment.
Implementation Method 1
a first attachment feature disposed along a flexible tongue cantilevered proximate an opening in a housing of the power supply such that the tongue can flex into the opening
Data Source
AI summary
An interlocking system for connecting a programmable logic controller and a power supply of an industrial control and automation system is provided. The interlocking system includes features configured to facilitate coupling with a panel or rail and a plurality of vertical slots and a latch disposed on a side surface of the power supply. The latch includes a first attachment feature disposed along a flexible tongue cantilevered proximate an opening in a housing of the power supply such that the tongue can flex into the opening. The interlocking system also includes a plurality of hooks and a second attachment feature formed on a side surface of the programmable logic controller. The plurality of hooks are configured to slide along and engage with the plurality of vertical slots such that the programmable logic controller and the power supply are held together horizontally and the second attachment feature is configured to couple with the first attachment feature to resist disengagement of the plurality of hooks and the plurality of vertical slots.