Lockable Signaling Column Axial Bar Mechanism
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Solution Overview
Problem
Existing signaling columns with superposed levels lack a simple and effective mechanism to prevent unauthorized dismantling, which can lead to unintended intervention or tampering.
Innovation Solution
A locking mechanism featuring an axial bar that can be displaced between a locked and unlocked position, with one end accessible by a tool and the other capable of penetrating an opening in the adjacent body to prevent pivoting, is integrated into the signaling column's design, utilizing guide surfaces and elements to facilitate translation and maintain the bar's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple bayonet-type mounting is used for assembling levels, then the ease of assembly and dismantling is improved, but the protection against unauthorized dismantling deteriorates
Solution Approach 1:
The locking mechanism is segmented into distinct functional components: a locking bar with first and second ends, guide surfaces, guide elements, and an opening. This segmentation allows each component to perform its specific function while maintaining overall system simplicity. The locking bar can move independently between locked and unlocked positions, providing security without complicating the assembly process.
Solution Approach 2:
The locking mechanism is designed to be self-servicing through the interaction of its components. The guide surfaces and guide elements automatically guide the locking bar into the correct position during assembly, while the bar's ability to abut against the opening edge automatically prevents dismantling when in the locked position. No additional actuators or complex control systems are needed.
2Reliability
If a locking mechanism is added to prevent unauthorized dismantling, then the protection against untimely dismantling is improved, but the device complexity increases
Solution Approach 1:
The locking function is extracted as a separate, dedicated mechanism rather than being integrated into the existing bayonet mounting structure. The locking bar operates independently from the pivoting connection, allowing it to provide security functionality without interfering with the simplicity of the assembly process. This extraction enables the locking feature to be added without fundamentally redesigning the mounting system.
Solution Approach 2:
Instead of requiring active engagement to lock the levels, the mechanism uses passive engagement where the locking bar naturally assumes a locked position by abutting against the opening edge. The guide surfaces and guide elements ensure proper positioning without requiring additional locking actions. This inversion of the typical locking approach reduces complexity while maintaining security.
Data Source
AI summary
The invention relates to a signaling column with levels which are assembled by a relative pivoting limited in amplitude and interconnected by axially-extending conductors. The body of a level includes a locking bar which extends axially to penetrate an opening in an adjacent level and abuts an edge of the opening on a rotation attempt. The ends of the bar may be displaced and the opening is of such a size as to accommodate the top end of a relevant bar and the bottom end of the bar above.