Bus Plug Rotary Handle Interlock Using a Flexible Push-Pull Cable
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Solution Overview
Problem
Existing electrical systems and apparatuses face challenges in accommodating interlock mechanisms with rotary handles due to inflexibility, requiring modifications to fit different device layouts and sizes, and there is a need to minimize the number of parts while ensuring operational flexibility.
Innovation Solution
An electrical system with a flexible interlock mechanism using a push pull cable connected to a cam assembly and interlock slider, allowing operation via a rotary handle without modifying the electrical device, and incorporating a cam assembly to control the interlock mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid interlock mechanism is used to connect the cam assembly to the interlock slider, then the structural strength and stability are improved, but the adaptability to different device layouts and sizes deteriorates
Solution Approach 1:
The patent replaces rigid connecting structures with a flexible cable assembly that includes a cable, cable conduit, and cable retainers. The flexible cable can bend and extend to accommodate different device layouts and sizes while maintaining the functional connection between the cam assembly and interlock slider, thus resolving the contradiction between structural strength and adaptability.
2Adaptability or versatility
If the interlock mechanism is made flexible to accommodate various layouts, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The flexible cable assembly serves multiple functions: it connects the cam assembly to the interlock slider, accommodates different device layouts and sizes, and provides structural support. This multi-functional design reduces the need for additional specialized components, thereby maintaining adaptability while controlling device complexity.
Solution Approach 2:
The cable conduit acts as an intermediary element that guides and protects the flexible cable, enabling it to navigate around obstacles and accommodate various device configurations without requiring complex routing structures or additional parts.
3Adaptability or versatility
If a flexible cable assembly is used to connect the cam assembly to the interlock slider, then the adaptability to different layouts is improved, but the manufacturing precision requirements worsen
Solution Approach 1:
The cable retainers are designed to automatically secure the flexible cable at specific intervals along the cable conduit, providing self-alignment and self-positioning during installation. This self-service mechanism reduces the need for high-precision manual installation while ensuring proper cable routing and tension.
Solution Approach 2:
The cable conduit is pre-configured with retention points and routing paths before installation, allowing the flexible cable to be easily installed in the correct position without requiring high-precision alignment during the assembly process. This preliminary preparation simplifies installation while maintaining adaptability.
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 flexible operation of interlock mechanisms with rotary handles across various device layouts and sizes, reducing the number of parts while maintaining operational efficiency and safety.
Implementation Method 1
a flexible mechanical interlock assembly that connects the cam assembly to the interlock mechanism, and wherein the flexible mechanical interlock assembly includes a push pull cable
Implementation Method 2
the actuating system includes a cam assembly that is configured to control the interlock mechanism; The cam assembly of the actuating system includes a first cam, and wherein the first cam is operable upon the rotation of the first shaft to displace the enclosure
Data Source
AI summary
The present disclosure provides an electrical system and an electrical apparatus including a flexible interlock mechanism. An electrical system to operate an electrical device in an enclosure includes an interlock mechanism, where the interlock mechanism includes an interlock slider for selectively engaging the enclosure with a busway structure; an actuating system on a door of the enclosure, where the actuating system includes a cam assembly that is configured to control the interlock mechanism; and a flexible mechanical interlock assembly that connects the cam assembly to the interlock mechanism, and where the flexible mechanical interlock assembly includes a push pull cable having a first end and a second end, where the first end of the push pull cable is connected to the cam assembly through a first connecting element, and where the second end of the push pull cable is connected to the interlock mechanism through a second connecting element.