Rotatable PSU Cover for Chassis Space and Orientation
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Solution Overview
Problem
The existing system chassis with a fixed PSU housing limits the size of the printed circuit board (PCB) that can be accommodated, restricting the efficient utilization of chassis space and hindering faster computing performance due to incorrect PSU orientation detection.
Innovation Solution
A rotatable PSU cover mechanism is introduced, featuring a first and second elongated plate that rotates relative to the top panel, allowing correct PSU orientation detection and preventing upside-down insertion by exposing a retractable latch when incorrect, thus enabling larger PCBs and more efficient space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed PSU housing with rear panel is used, then the PSU can be prevented from incorrect insertion, but the chassis space utilization is limited and larger PCBs cannot be accommodated
Solution Approach 1:
The PSU cover is made rotatable relative to the top panel, transitioning from a fixed structure to a dynamic one. The cover can rotate between a first orientation (blocking access) and a second orientation (allowing access), enabling the system to adapt between different operational states while maintaining both reliability and space efficiency
Solution Approach 2:
The PSU cover is divided into two perpendicular elongated plates (first and second elongated plates) that can rotate independently relative to the top panel. This segmentation allows the cover to provide orientation detection functionality while minimizing obstruction to chassis space and PCB installation
2Reliability
If a stopper is added to prevent incorrect PSU insertion, then reliability improves, but the PCBA size is limited by the rear panel position
Solution Approach 1:
Instead of a fixed stopper that permanently blocks space, the PSU cover provides a dynamic blocking mechanism that only obstructs the insertion path when in the first orientation. When rotated to the second orientation, the cover allows full access for PCBA installation, thus preventing incorrect insertion without permanently limiting PCBA size
Solution Approach 2:
The PSU cover acts as an intermediary mechanism between the PSU insertion prevention function and the PCBA installation space requirement. By rotating the cover to different orientations, it mediates between these two conflicting requirements, providing prevention when needed and space when needed
Data Source
AI summary
A power supply unit (PSU) housing configured to receive a PSU is disclosed. The PSU housing includes a top panel, a bottom panel opposite to the top panel, a first side panel, a second side panel opposite to the first side panel, and a PSU cover. The first side panel and the second side panel define a width of the PSU housing. The PSU cover extends along the width of the PSU housing. The PSU cover includes a first elongated plate and a second elongated plate, which are perpendicular to each other. The PSU cover is rotatable relative to the top panel, such that (i) in a first orientation, the first elongated plate of the PSU cover is above and parallel to the top panel, and (ii) in a second orientation, the second elongated plate of the PSU cover is about flush and parallel to the top panel.