Retractable Pivoting Trap Door for Confined Server Rack Access

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Solution Overview

Problem

Conventional swinging doors in server racks are impractical due to limited space, hindering access to modular electronics while requiring airflow protection and maintenance access.

Innovation Solution

A retractable pivoting trap door system with an upper and lower component that slides and pivots, allowing for minimal space usage when open and full coverage when closed, facilitating easy insertion and removal of electronics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional swinging door is used to cover the opening, then airflow protection is provided, but the limited space in server racks prevents the door from swinging open sufficiently for access

Engineering Contradiction:

Improveaccess to modular electronicsVSAvoidspace required for door movement

Core Design Contradiction:

Ease of operationVSVolume of moving object

Solution Approach 1:

The door is divided into two separate components: a stationary upper door component and a movable lower trap door component. This segmentation allows the lower component to be pulled outward and rotated upward independently, providing access without requiring the entire door structure to swing open in the traditional manner.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of rotating the door component in a horizontal arc (traditional swinging motion), the lower trap door component rotates upward in a vertical dimension. This dimensional change allows the door to open within the confined vertical space of the server rack while still providing adequate access to the electronics bay.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of operation

If the door structure is made larger to provide sufficient opening space, then access to electronics is improved, but the space available in the server rack is exceeded

Engineering Contradiction:

Improveaccess to electronicsVSAvoidspace occupied in server rack

Core Design Contradiction:

Ease of operationVSArea of stationary object

Solution Approach 1:

The lower door component is designed with dynamic movement capabilities, allowing it to be pulled outward along guides and rotated upward on hinges. This dynamic configuration enables the door to achieve a large effective opening area during access operations while maintaining a compact footprint when closed, fitting within the server rack's spatial constraints.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

When closed, the lower trap door component nests beneath the stationary upper door component, creating a compact closed structure. During operation, the lower component can be extracted outward and rotated upward, providing access space without permanently occupying additional volume within the server rack.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Volume of moving object

If a retractable pivoting trap door system is implemented, then space requirements are minimized and access is facilitated, but the device complexity increases

Engineering Contradiction:

Improvespace required for door operationVSAvoiddoor mechanism complexity

Core Design Contradiction:

Volume of moving objectVSDevice complexity

Solution Approach 1:

Guide structures act as intermediaries between the lower trap door component and the stationary upper door component. These guides constrain and direct the movement of the lower component, enabling the complex retractable and rotational motions while maintaining structural integrity and proper alignment throughout the opening and closing sequence.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12439544B2Retractable pivoting trap door

Publication Date: 2025.10.07 PURE STORAGE INC

AI summary

A server door assembly including at least one side mounting panel, a pivoting door disposed coupled to the at least one side mounting panel, wherein the pivoting door includes a first door component coupled to a pivot point of the side mounting panel, and a second door component configured to slide along the first component as the first component pivots about the pivot point.