Chassis Slot Flap Mechanism for Automatic Airflow Closure

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Solution Overview

Problem

Computer chassis slots often experience issues where flaps fail to return to a closed position after a module is withdrawn, leading to unwanted airflow.

Innovation Solution

A system comprising a push rod and latch mechanism that translates within the slot, engaging and disengaging to move the flap between open and closed positions based on module insertion and withdrawal, ensuring airflow control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the flap is left open to allow module insertion, then module accessibility is improved, but unwanted airflow enters or escapes the chassis

Engineering Contradiction:

Improvemodule insertionVSAvoidunwanted airflow

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The push rod is pre-configured in a retracted position that allows the flap to remain open during module insertion. When the module is withdrawn, the push rod automatically advances to push the flap closed, preventing unwanted airflow before it can occur during normal operation cycles.

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The system transitions from a static flap position to a dynamic system where the flap can move between open and closed positions based on module presence. The push rod and latch mechanism enable the flap to adapt its position automatically, being open when needed for insertion and closed to prevent airflow when the slot is empty.

Inventive Principle:

Principle #15Dynamics

2Device complexity

If a simple flap mechanism is used, then device complexity is reduced, but the flap cannot return to closed position automatically

Engineering Contradiction:

Improveflap mechanismVSAvoidflap position control

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The push rod serves as an intermediary mechanism between the module insertion event and the flap position control. It translates the mechanical action of module withdrawal into controlled flap movement, enabling automatic position control without requiring complex sensors or actuators directly on the flap.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The latch mechanism is designed to automatically engage with the push rod during module insertion and disengage during withdrawal. This self-actuating system uses the module's own movement to trigger the flap closure sequence, eliminating the need for external control systems or additional power sources.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS11395441B2Systems and methods for operating a flap

Publication Date: 2022.07.19 QUANTA COMPUTER INC

AI summary

Systems and methods include a chassis having a slot configured to receive a module with a flap are disclosed. The flap is configured to be in at least a first position and a second position. The system further includes a push rod configured to translate within the slot. The push rod is configured in a first position to allow the flap to move to the first flap position, and in a second position to move the flap into the second flap position. The system further includes a latch configured to translate within the slot and engage the push rod to travel in a first direction with the push rod, from the first push rod position to the second push rod position. The latch is also configured to withdraw the push rod from the second push rod position in a second direction, opposite from the first direction.