Dual-Layer Expansion Card Chassis for Independent Card Removal

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Solution Overview

Problem

The existing method of removing expansion cards from a motherboard requires sequential removal, leading to inefficient installation and disassembly due to the need to remove upper cards before lower cards, which complicates the process.

Innovation Solution

A chassis design with guided rails and latching handles allows independent removal of expansion cards from upper and lower layers, eliminating the need for sequential removal by using separate upper and lower handles and positioning mechanisms to facilitate easy insertion and extraction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If expansion cards are arranged in two layers on the motherboard, then the quantity of expansion cards that can be installed is increased, but the complexity of removal increases because upper cards must be removed before lower cards

Engineering Contradiction:
Improvequantity of expansion cardsVSAvoidcomplexity of removal process
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

The chassis is divided into an upper chassis and a lower chassis that can be independently separated. The upper chassis holds upper expansion cards while the lower chassis holds lower expansion cards. This segmentation allows independent access to each layer through separate handles, eliminating the need to remove upper cards before lower cards and thus reducing removal process complexity while maintaining the ability to install multiple expansion cards in two layers

Inventive Principle:
Principle #1Segmentation

2Quantity of substance

If expansion cards are arranged in two layers, then the density of card installation is improved, but the time required for installation and removal increases due to sequential access requirements

Engineering Contradiction:
Improvecard installation densityVSAvoidtime for installation and removal
Core Design Contradiction:
Quantity of substanceVSLoss of time

Solution Approach 1:

The chassis is divided into an upper chassis and a lower chassis that can be independently separated. The upper chassis holds upper expansion cards while the lower chassis holds lower expansion cards. This segmentation allows independent access to each layer through separate handles, eliminating the need to remove upper cards before lower cards and thus reducing removal process complexity while maintaining the ability to install multiple expansion cards in two layers

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The upper chassis is designed to be movable relative to the lower chassis through a latching mechanism with handles. The upper chassis can be dynamically opened and closed to provide independent access to upper expansion cards, while lower expansion cards remain accessible through the lower chassis. This dynamic design enables parallel access to both layers, significantly reducing the time required for installation and removal operations compared to fixed sequential access

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12610494B2Chassis and electronic host
Publication Date: 2026.04.21 FULIAN PRESION ELECTRONICS (TIANJIN) CO LTD
  • US12610494B2 patent drawing
  • US12610494B2 patent drawing
  • US12610494B2 patent drawing

AI summary

A chassis for holding electronic devices includes a main body, a guiding component, and a latching component. The main body defines a storage cavity with an upper layer and a lower layer, the upper layer can hold an electronic device, and the lower layer can hold another electronic device. The electronic devices can slide along the guiding component into or out of the storage cavity. The latching component have an upper handle and a lower handle, the upper handle can latch or unlatch the electronic device in the upper layer, and the lower handle can latch or unlatch the electronic device in the lower layer. An avoiding space is defined between the upper handle and the lower handle, the avoiding space is configured for providing a space to rotate the lower handle, so the lower handle never contacts the upper handle. An electronic host using the chassis is also disclosed.