Adjustable EMI Baffle for Data Storage Connectors

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Solution Overview

Problem

Current methods for reducing electromagnetic interference (EMI) in data storage systems are limited by increased part counts, costs, and design constraints, making it difficult to comply with EMI emission regulations without affecting the internal components of computer systems.

Innovation Solution

An adjustable EMI baffling apparatus is attached to the exterior of data storage system components, featuring a baffle that can be moved between closed and open positions to block or allow access to connectors, utilizing EMI-absorbing materials and designed to meet specific EMI requirements, while allowing airflow and not interfering with other components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional EMI reduction methods (gaskets, shields, faraday cages) are used, then EMI containment is improved, but device complexity and part count increase

Engineering Contradiction:
ImproveEMI containmentVSAvoidpart count
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent extracts the EMI shielding function from internal components and relocates it to an external adjustable baffle that can be positioned away from the connectors. This removes the need for multiple internal shields and gaskets, reducing part count while maintaining EMI containment effectiveness.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent employs an adjustable baffle that can be dynamically positioned between closed and open states, allowing the EMI shielding capability to be activated only when needed. This dynamic approach eliminates the need for permanent internal shielding structures, reducing overall device complexity.

Inventive Principle:
Principle #15Dynamics

2Object-affected harmful factors

If internal shields and gaskets are installed, then EMI emission is reduced, but assembly labor and cost increase

Engineering Contradiction:
ImproveEMI emissionVSAvoidassembly labor
Core Design Contradiction:
Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The patent combines multiple EMI shielding functions (blocking, absorbing, and containing EMI) into a single external baffle assembly. This consolidation reduces the number of assembly steps and labor required compared to installing multiple separate internal shields and gaskets throughout the system.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The adjustable baffle is pre-configured with EMI-absorbing materials and mounting mechanisms during manufacturing, allowing for quick installation and adjustment in the field without requiring complex assembly procedures. This preliminary preparation significantly reduces assembly labor and cost.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If connectors are exposed for cable management, then ease of operation is improved, but EMI radiation increases

Engineering Contradiction:
Improvecable managementVSAvoidEMI radiation
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The patent uses an adjustable baffle that can be dynamically positioned to block EMI when connectors are not in use while allowing connectors to remain exposed and accessible when needed for cable management. This dynamic shielding approach maintains ease of operation while reducing EMI radiation during non-operational periods.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The adjustable baffle serves as an intermediary element between the connectors and the external environment, providing EMI shielding only when necessary. This mediator approach allows connectors to remain exposed for ease of operation while preventing EMI radiation when the baffle is in the closed position.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Effectively reduces EMI emissions in compliance with regulations like FCC standards without altering the internal system components, reducing assembly complexity and costs.

Implementation Method 1

The baffle may comprise an EMI absorbing material and may be tuned to meet specific EMI requirements

Methodology Applied
Scientific EffectEMI absorbing: Absorption (EM radiation)

Data Source

PatentUS9307683B2Adjustable EMI baffling apparatus for data storage systems
Publication Date: 2016.04.05 NETAPP INC
  • US9307683B2 patent drawing
  • US9307683B2 patent drawing
  • US9307683B2 patent drawing

AI summary

The present invention is directed to an apparatus for reducing and constraining EMI (electronic magnetic radiation) emissions without affecting the internals of data storage system components. A baffle is attached to the exterior of the housing of a data storage system component by baffle mounts. The baffle is operable between a closed position, where the baffle blocks EMI emitted by connectors on the data storage system component, and an open position, where the connectors are not blocked allowing for servicing and cable management. The baffle may comprise an EMI absorbing material and be tuned to meet specific EMI requirements. The baffle mounts offsets the baffle from the data storage system component and the baffle includes a number of holes to allow airflow. The adjustable EMI baffling apparatus does not interfere with other mounted components while the data storage system component is mounted in a cabinet.