Spring-Loaded Safety Cover for Equipment Rack Busbar Access
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Solution Overview
Problem
Existing safety measures in data center equipment racks, such as warning labels and blanking panels, are inadequate in preventing unwanted access to live busbars, which poses a risk to technicians during maintenance or replacement of power modules.
Innovation Solution
A safety cover assembly that automatically locks into place when a power module is removed from the equipment rack, using a spring-loaded cover and spring stop locks to block access to the busbar, allowing for tool-free installation and removal of power modules while preventing unauthorized access to live electrical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blanking panel is installed to block access to the live busbar, then safety is improved, but device complexity and installation time increase
Solution Approach 1:
The safety cover is merged with the power module as an integrated assembly. The cover is pre-attached to the power module and moves together with it during installation and removal, eliminating the need for separate blanking panels and reducing overall device complexity while maintaining safety functionality
Solution Approach 2:
The safety cover serves multiple functions: it blocks access to the live busbar for safety, defines the physical boundary of the power module installation space, and guides proper alignment during installation. This multi-functionality replaces what would otherwise require multiple separate components
2Reliability
If a blanking panel is used to block the busbar, then safety is improved, but installation time and additional parts are required
Solution Approach 1:
The safety cover is combined with the power module into a single integrated unit. When the power module is installed or removed, the cover automatically moves with it, eliminating the need for separate installation steps for blanking panels and significantly reducing installation time
Solution Approach 2:
The safety cover is pre-installed and pre-positioned on the power module before the module is installed in the rack. This preliminary preparation ensures that safety protection is already in place and eliminates the need for additional installation steps at the rack location
3Reliability
If the safety cover is locked in closed position, then safety is improved, but ease of operation for maintenance is reduced
Solution Approach 1:
The safety cover transitions from a static fixed panel to a dynamic movable component. It automatically opens when the power module is installed and closes when removed, adapting its state based on operational context. This dynamic behavior maintains safety during normal operation while enabling easy access during maintenance
Solution Approach 2:
The safety cover is designed to automatically open and close based on the installation and removal of the power module itself, without requiring separate manual operations. The module's own movement serves to control the cover's state, eliminating the need for additional manual intervention
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
The safety cover assembly effectively prevents accidental exposure to live busbars, ensuring technician safety and maintaining thermal efficiency by blocking recirculation of hot air, without requiring additional tools or parts, and can be manually overridden for access when needed.
Implementation Method 1
A safety cover assembly that automatically locks into place when a power module is removed from the equipment rack, using a spring-loaded cover and spring stop locks
Implementation Method 2
using a spring-loaded cover and spring stop locks to block access to the busbar
Data Source
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AI summary
A cover assembly is provided to prevent access within a mounting slot of an equipment rack. The assembly includes a cover sufficiently sized to block access to a back of the equipment rack that includes an open power source. The cover is secured to frame members by at least one hinge. The cover is configured to rotate between a closed position in which the cover blocks access to the open power source and an open position in which the cover is rotated to enable installation of a power module in the mounting slot. The assembly further includes a first spring stop lock provided the first frame member. The first spring stop lock is configured to lock the cover in the closed position and to release the cover to enable an installation of the power module within the mounting slot of the equipment rack.