Relay Top Cover Openings for Higher Retention Force
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Solution Overview
Problem
Conventional relays in data centers face challenges in providing sufficient retention force for high-speed power supply switching, leading to complex structures, high installation difficulties, and low reliability due to reliance on primary and auxiliary permanent magnets.
Innovation Solution
The proposed relay utilizes a yoke iron and strategically designed openings on a top cover to enhance magnetic flux density, eliminating the need for glue and reducing complexity by riveting the static iron core, primary, and secondary permanent magnets to the yoke iron, thereby improving retention force and response speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a primary permanent magnet and an auxiliary permanent magnet are used to improve retention force, then the retention force is improved, but the structure becomes complex and installation difficulty increases
Solution Approach 1:
The patent extracts and eliminates the auxiliary permanent magnet from the conventional relay structure. Instead of using both primary and auxiliary permanent magnets, the invention uses only a primary permanent magnet combined with a specifically designed movable iron core structure that includes a retention arm extending into a retention cavity. This simplifies the structure while maintaining sufficient retention force through the magnetic interaction between the primary magnet and the retention arm.
Solution Approach 2:
The movable iron core is segmented into functional portions including a retention arm that extends into a retention cavity. This segmentation allows the retention function to be integrated into the movable iron core structure itself, eliminating the need for separate auxiliary permanent magnets and reducing overall structural complexity.
2Force
If a primary permanent magnet and an auxiliary permanent magnet are used to improve retention force, then the retention force is improved, but reliability decreases
Solution Approach 1:
By removing the auxiliary permanent magnet, the patent reduces the number of components that could potentially fail. The simplified structure with fewer permanent magnets and associated mounting elements improves reliability while the retention arm and retention cavity design ensures adequate retention force is maintained through optimized magnetic circuit geometry.
3Force
If conventional permanent magnet configuration is used, then retention force is provided, but assembly time increases due to complex structure
Solution Approach 1:
The patent merges the retention function into the movable iron core structure by integrating the retention arm as part of the movable iron core. This consolidation eliminates separate auxiliary magnets and their mounting structures, reducing the number of assembly steps and reducing assembly time while maintaining retention functionality through the integrated magnetic circuit design.
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
This configuration enhances the retention force, reduces assembly time, and improves transmission efficiency, resulting in a more reliable and efficient power switching mechanism for data centers.
Implementation Method 1
A coil in the relay drives a driving mechanism to move, so that a movable spring plate on the relay is in contact with a static spring plate
Implementation Method 2
a primary permanent magnet is used to provide a magnetic field for a coil, and an auxiliary permanent magnet is used to provide more electromagnetic lines for a movable iron core
Data Source
AI summary
A relay is disclosed to enhance a retention force by using a yoke iron and an opening group on a top cover. The relay includes the yoke iron, the top cover, a static iron core, a primary permanent magnet group, a secondary permanent magnet group, a first movable iron core, and a second movable iron core. The top cover is provided with a first opening group, the first opening group is provided at a position at which the top cover is configured to be in contact with the first movable iron core, the first opening group includes at least one first sub-opening, the yoke iron is provided with a second opening group, the second opening group is provided at a position at which the yoke iron is configured to be in contact with the second movable iron core, and the second opening group includes at least one second sub-opening.