Expansion Card Retention Bracket With Spring Stop Mechanism

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Solution Overview

Problem

Expansion cards in information handling systems can become loosened during movement or shipment due to vibrations and external shocks, leading to malfunction.

Innovation Solution

A bracket with a spring and stop mechanism is coupled to the chassis, allowing it to engage with the expansion card closer to the second end, providing resilience and resistance to secure the card in place, reducing movement and vibration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If expansion cards are installed in information handling systems, then system functionality is enhanced, but the cards become loosened during movement or shipment due to vibrations and external shocks

Engineering Contradiction:

Improvesystem functionalityVSAvoidcard retention stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The retention mechanism is divided into separate functional components: a bracket with finger members for individual card engagement, a spring for resilient force application, and a stop for positioning. This segmentation allows each component to perform its specific function optimally while working together to secure the expansion card against vibrations and shocks.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The spring member is pre-loaded to provide resilient force that cushions the expansion card against external shocks and vibrations before they can cause loosening. The spring absorbs impact energy and maintains continuous contact pressure on the card, preventing it from becoming loose during transport or movement.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Reliability

If a bracket with spring and stop mechanism is used to secure expansion cards, then card retention stability is improved, but device complexity increases

Engineering Contradiction:

Improvecard retention stabilityVSAvoidretention mechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Multiple retention functions are merged into a single integrated bracket assembly. The bracket combines finger members for card engagement, a spring for resilient force, and a stop for positioning into one unified component that attaches to the chassis. This merging reduces the number of separate parts and simplifies installation while maintaining reliable card retention.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The spring member automatically adjusts to maintain contact pressure on the expansion card without requiring external control or adjustment mechanisms. The resilient nature of the spring provides self-regulating force that adapts to variations in card thickness and installation tolerances, eliminating the need for complex adjustment mechanisms.

Inventive Principle:

Principle #25Self-service

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 secures expansion cards within the information handling system, preventing loosening and ensuring functionality during transport and operation.

Implementation Method 1

A bracket with a spring and stop mechanism is coupled to the chassis, allowing it to engage with the expansion card closer to the second end

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

providing resilience and resistance to secure the card in place, reducing movement and vibration

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentUS7545650B2Systems for retaining expansion cards

Publication Date: 2009.06.09 DELL PROD LP

AI summary

An apparatus comprising a chassis defining an attachment slot suitable for receiving a first end of an expansion card and a bracket coupled to the chassis, the bracket movable into engagement with the expansion card closer to a second end than the first end when the expansion card is positioned in the attachment slot.