Removable Interference Shield for Server Sled EMI Protection
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Solution Overview
Problem
Existing server rack designs are inefficient in terms of space utilization, cooling, and maintenance, with issues such as excess cable length causing interference and stress on connectors, and inadequate protection against electromagnetic interference (EMI) and radio frequency interference (RFI).
Innovation Solution
The proposed solution includes a device platform with continuously powered device sleds, a latch handle with plunger lock for secure positioning, an extension limit latch to prevent accidental removal, a removable fan cartridge for easy maintenance, a cable management enclosure to manage excess cable length, and an interference shield for EMI/RFI protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If device sleds are made easily accessible for maintenance, then ease of operation is improved, but protection against EMI/RFI and safety against exposed conductors deteriorate
Solution Approach 1:
The interference shield is divided into multiple sections that can be independently removed or adjusted, allowing maintenance personnel to access specific components without removing the entire shield. This segmentation enables easy access for maintenance while maintaining protection where needed.
Solution Approach 2:
The interference shield acts as an intermediary barrier between the device sleds and the external environment. It provides a removable protective layer that can be temporarily removed during maintenance and reinstalled afterward, mediating between the need for access and the need for protection.
2Ease of operation
If communication cables are made long enough to accommodate full sled travel, then ease of operation is improved, but cable management and interference prevention deteriorate
Solution Approach 1:
The cable management enclosure nests excess cable length within its structured interior, organizing the cable in a compact, protected space. This allows the cable to be long enough for full sled travel while preventing it from causing interference or stress outside the enclosure.
Solution Approach 2:
The cable management enclosure serves as an intermediary structure that accommodates the cable's length requirements while isolating it from potential sources of interference and stress. It mediates between the need for long cables and the need to prevent cable-related problems.
3Productivity
If more storage devices are housed within a server rack, then space efficiency is improved, but cooling and interference prevention become more difficult
Solution Approach 1:
The server rack is segmented into multiple device sleds that can be independently accessed and managed. Each sled acts as a modular unit, allowing for targeted cooling and interference protection without affecting the entire rack, thus enabling higher density while maintaining cooling and EMI/RFI efficiency.
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 space efficiency, reduces maintenance complexity, prevents cable-related issues, and ensures effective airflow while providing secure and efficient access for maintenance and protection against electromagnetic interference.
Implementation Method 1
an interference shield for EMI/RFI protection
Data Source
AI summary
Technology is provided for a device sled with an interference shield. The device sled includes a sled chassis having a bottom wall and first and second opposed sidewalls. A shield support bracket is coupled to the first sidewall and an interference shield is removably coupled to the shield support bracket and the second sidewall. The interference shield includes a shield panel, first and second opposed side flanges extending from the shield panel, and a latch coupled to the first side flange and positioned to engage the shield support bracket.