Chassis Ear Latch Assembly with Recessed Actuation Access

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Solution Overview

Problem

Existing chassis management systems face challenges in efficiently utilizing the limited front side real estate of computing devices for both latch actuation and other functional purposes, limiting the ease of detachment and maintenance access.

Innovation Solution

A latch assembly is integrated into the chassis ear, featuring a frame with recesses and a pivot mechanism that allows for selective force application, enabling easy actuation of the latch without obstructing the front side area, facilitating reversible attachment to structural members.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the latch is made wider to facilitate easier actuation, then the ease of operation improves, but the available front side real estate for other functional purposes decreases

Engineering Contradiction:
Improvelatch actuationVSAvoidfront side real estate
Core Design Contradiction:
Ease of operationVSArea of stationary object

Solution Approach 1:

The patent extracts the force application functionality from the main body of the latch by introducing a separate access tool that interfaces with a recessed port. This allows the latch mechanism itself to remain compact while providing full actuation capability through an external tool, effectively separating the actuation function from the latch structure's physical dimensions.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces an intermediary access tool that mediates between the user and the latch mechanism. The tool engages with a recessed port in the latch assembly, allowing force to be applied to actuate the latch without requiring the latch itself to be wide. This intermediary mechanism resolves the contradiction by decoupling the actuation interface from the latch body dimensions.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Area of stationary object

If the latch is recessed deeper to protect it and save front side space, then the area utilization improves, but the ease of operation deteriorates due to reduced access

Engineering Contradiction:
Improvefront side real estateVSAvoidlatch actuation
Core Design Contradiction:
Area of stationary objectVSEase of operation

Solution Approach 1:

The patent implements a nested structure where the access tool is designed to fit within or engage with a recessed port in the latch assembly. The tool itself may contain nested components (such as a handle that telescopes or a mechanism that folds), allowing full functionality to be packed into a compact form factor that does not protrude significantly from the chassis front.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent transitions the actuation interface from a two-dimensional surface interaction to a three-dimensional engagement through the recessed port. The access tool engages with the latch mechanism through depth rather than width, utilizing the third dimension (depth) to provide adequate actuation leverage while maintaining a compact front profile.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Reliability

If a frame is added to restrict access to the latch for protection, then the reliability improves, but the device complexity increases

Engineering Contradiction:
Improvelatch protectionVSAvoidlatch assembly structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent designs the frame and recessed port structure to serve multiple functions: it protects the latch mechanism from accidental activation or contamination, provides a precise interface for the access tool, and maintains structural integrity of the chassis ear. By combining these functions into a single integrated component, the complexity increase is minimized while achieving reliable protection.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent segments the latch assembly into distinct functional components: the latch mechanism itself, the protective frame, the recessed access port, and the interface for the external tool. This segmentation allows each component to be optimized independently and assembled modularly, reducing overall complexity while improving reliability through specialized design of each element.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12376246B2Latch assemblies for data processing systems
Publication Date: 2025.07.29 DELL PROD LP
  • US12376246B2 patent drawing
  • US12376246B2 patent drawing
  • US12376246B2 patent drawing

AI summary

Devices, systems, and methods for managing chassis of data processing systems are disclosed. The chassis may be managed by reversibly attaching them to structural members such as rails. When so attached, the chassis may be fixedly held in a position. To facilitate access to an interior of the chassis, the chassis may be detached from the structural member and moved to a maintenance position. To detach the chassis from the structural member, the chassis may include a latch. The latch may be positioned in an ear of the chassis and may be protected by a frame. The frame may include a recess, hole, or other feature to facilitate access to the latch. The access may allow application of force to a single portion of the latch to rotate or otherwise actuate the latch. Actuation of the latch may facilitate detachment of the chassis from the structural member.