Server information handling system hybrid rail support system

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Solution Overview

Problem

Existing server racks with wider width information handling systems require the entire chassis to be powered off and removed for servicing, lacking sufficient space for sliding rail structures, which complicates operations like hot swapping of drives.

Innovation Solution

A hybrid rail support system comprising a static rail and a sliding rail, designed with features like sliding rail ball bearings, static rail L flange, and slam latch components, allowing the wider width chassis to be accessed in a rack service position without disassembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a wider width information handling system chassis is installed in a server rack, then the system can accommodate more components and provide better performance, but there is insufficient space for sliding rail structures requiring the entire chassis to be removed for servicing

Engineering Contradiction:

Improvechassis width capacityVSAvoidservicing accessibility

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The rail support system is divided into multiple segments: a fixed rail portion mounted to the rack and a sliding rail portion attached to the chassis. This segmentation allows the sliding rail to extend outward, providing service access to the wider chassis without requiring complete removal from the rack.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The rail system transitions from a static fixed rail to a dynamic hybrid system where the sliding rail can move between retracted and extended positions. This dynamic capability enables the chassis to be accessed in a partially extended state, facilitating servicing operations while maintaining rack integration.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If the entire chassis is removed from the rack for servicing, then complete access to all components is achieved, but system downtime increases and operational continuity is disrupted

Engineering Contradiction:

Improvecomponent accessVSAvoidservice downtime

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The sliding rail enables partial extension of the chassis outward from the rack, providing sufficient access for common servicing operations without requiring complete removal. This partial action approach maintains the chassis in a serviced state while minimizing disruption to system operation and rack configuration.

Inventive Principle:

Principle #16Partial or excessive action

3Ease of operation

If a sliding rail structure is added to enable chassis extension, then servicing accessibility is improved, but the complexity of the rail support system increases

Engineering Contradiction:

Improvechassis accessibilityVSAvoidrail support structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The sliding functionality is extracted as a separate, modular component that can be independently implemented. The sliding rail portion is designed as a distinct element that interfaces with the fixed rail, allowing the complexity to be managed through modular design while achieving the desired accessibility improvement.

Inventive Principle:

Principle #2Taking out (Extraction)

4Ease of operation

If friction between the sliding rail and fixed rail is reduced, then smooth extension and retraction is achieved, but additional components like ball bearings are required increasing system complexity

Engineering Contradiction:

Improverail movement smoothnessVSAvoidfriction reduction mechanism

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The friction-based sliding interface is replaced with a ball bearing mechanism that converts sliding friction into rolling contact. This substitution dramatically reduces friction between the sliding rail and fixed rail, enabling smooth extension and retraction of the chassis while managing the added complexity through proven mechanical components.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

Enables efficient servicing of wider width information handling systems by allowing access without powering off, facilitating operations like hot swapping of drives while reducing friction and ensuring smooth extension and retraction of the chassis.

Implementation Method 1

sliding rail ball bearings

Methodology Applied

Scientific EffectBall bearing: Ball Bearing

Data Source

PatentUS12513848B2Server information handling system hybrid rail support system

Publication Date: 2025.12.30 DELL PROD LP

AI summary

A hybrid rail support system. The hybrid rail support system includes a wider width information handling system chassis; and, a hybrid rail support component extending from a front portion of the server rack to a rear portion of the server rack, the hybrid rail support component comprising: a static rail, the static rail being configured to mount to a side of a server rack; and, a sliding rail, the sliding rail being configured to move along the static rail from an inserted position to an extended position, the sliding rail being configured to mount to a rear portion of a wider width information handling system chassis, the sliding rail enabling the wider width information handling system chassis to extend from a rack to a rack service position.