Switchgear Actuator Aligner for Reliable Door-Mounted Toggle Engagement
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Solution Overview
Problem
Electrical panels in IP66 conditions often lack visual access to the breaker knob or toggle of switch gears, leading operators to apply excessive force when engaging actuators, which can damage the panel door and prevent proper engagement.
Innovation Solution
An actuator system comprising an aligner assembly and an actuator plate assembly, where the aligner is pivotably mounted on the switch gear housing with slanting flanges defining a valley and gap, allowing the actuator to engage the toggle without requiring significant force, and a handle element that facilitates rotation of the shaft element to angularly displace the aligner and engage the toggle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the actuator is pushed with a relatively large amount of force to ensure engagement with the toggle, then the engagement reliability is improved, but the panel door may be damaged and the actuator may fail to engage properly
Solution Approach 1:
The aligner assembly acts as an intermediary mechanism between the actuator and the toggle. It includes a valley with guide surfaces that receive and guide the actuator, and a toggle engagement surface that interfaces with the toggle. This intermediary structure ensures proper alignment and distributes the engagement force, allowing reliable toggle engagement without requiring excessive force that could damage the panel door.
2Reliability
If the actuator is pushed with a relatively large amount of force to ensure engagement with the toggle, then the engagement reliability is improved, but the actuator may fail to engage with the toggle
Solution Approach 1:
The aligner assembly performs preliminary alignment and positioning actions before the actual toggle engagement. The valley with its guide surfaces pre-aligns the actuator with the toggle, and the guide surfaces gradually guide the actuator into the correct position. This preliminary action eliminates the need for operators to apply excessive force, making the actuator easy to operate while ensuring reliable engagement.
3Manufacturing precision
If the aligner is made with slanting flanges defining a valley and gap, then the engagement precision is improved, but the device complexity increases
Solution Approach 1:
The aligner assembly is segmented into distinct functional features: slanting flanges that define a valley with guide surfaces, and a separate toggle engagement surface. This segmentation allows each feature to perform its specific function - the valley guides and aligns the actuator, while the engagement surface interfaces with the toggle. The segmentation improves engagement precision by ensuring proper alignment while keeping the overall design manageable through functional decomposition.
Data Source
AI summary
The present disclosure relates to the field of switch gears, and envisages an actuator for a switch gear of an electric panel having a door. The actuator comprises an aligner assembly and an actuator plate assembly. The aligner assembly comprises an aligner pivotably mounted on the switch gear housing, and engaging with a toggle of a circuit breaker, of the switch gear, to angularly displace the toggle. The aligner has a pair of slanting flanges configured to define a valley separated by a gap. The actuator plate assembly comprises a mounting plate mounted on the enclosure door. A shaft element, having a handle element and an engaging element, passes through the mounting plate. The engaging element is configured to nest in the gap of the aligner to angularly displace the aligner.