Fool-Proofing Structure for Cabinet Power Modules

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Solution Overview

Problem

Existing cabinet systems face challenges in providing a fool-proofing structure that prevents power modules from being inserted incorrectly while maintaining structural strength and space utilization, as conventional concave and convex structures either limit neighboring space or compromise structural integrity.

Innovation Solution

A device with a fool-proofing structure featuring a first and second protrusion portion on an elastic sheet module, which abuts against the cabinet to prevent incorrect insertion, and a corresponding notch on the cabinet partition allows the device to be rapidly installed by detaching the protrusion portion from the notch, enhancing structural strength and space utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a recess is formed on the partition to accommodate the block for fool-proofing, then the fool-proofing function is achieved, but the utilization of neighboring space is limited due to the bulge on the opposite side

Engineering Contradiction:
Improvefool-proofing functionVSAvoidutilization of neighboring space
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

Instead of forming a recess in the partition to accommodate the block, the invention inverts the approach by forming a protrusion on the power module that actively engages with a corresponding recess in the cabinet body. This reversal eliminates the space-wasting bulge on the partition while achieving the same fool-proofing effect through complementary geometric engagement.

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The invention extracts the fool-proofing feature from the partition structure and relocates it to the power module itself. By moving the engagement feature from the cabinet side to the insertable device side, the partition remains flat and space-efficient while the power module carries the active engagement element.

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If a hollowed groove is formed on the partition to realize fool-proofing function, then incorrect insertion is prevented, but the structural strength of the cabinet is badly affected

Engineering Contradiction:
Improvefool-proofing functionVSAvoidstructural strength of the cabinet
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The invention inverts the location of the hollowed groove from the partition to the cabinet body. The power module carries the protrusion that engages with the recess in the cabinet body, thereby preserving the partition's structural integrity while maintaining the fool-proofing function through the cabinet body's engagement feature.

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The hollowed groove feature is extracted from the partition and relocated to the cabinet body. This extraction allows the partition to remain a solid, strength-providing element while the cabinet body assumes the role of providing the engagement recess, thus separating the structural function from the fool-proofing function.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If conventional fool-proofing structures are used, then incorrect insertion is prevented, but the installation process becomes complex and time-consuming

Engineering Contradiction:
Improvefool-proofing functionVSAvoidinstallation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The invention inverts the engagement mechanism so that the power module's protrusion actively guides itself into the cabinet body's recess during insertion. This self-guiding approach eliminates the need for complex alignment procedures or multiple adjustment steps, reducing installation time while maintaining fool-proofing through the geometric constraint of the protrusion-recess pairing.

Inventive Principle:
Principle #13The other way round (Inversion)

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

The solution effectively prevents incorrect insertion of power modules while allowing for easy and correct installation, maintaining structural integrity and space utilization, thereby addressing the limitations of prior art.

Implementation Method 1

an elastic sheet module (3), wherein the first end (31) is disposed on the case (2)

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS11805612B2Device having fool-proofing structure
Publication Date: 2023.10.31 DELTA ELECTRONICS INC(CN)
  • US11805612B2 patent drawing
  • US11805612B2 patent drawing
  • US11805612B2 patent drawing

AI summary

A device having fool-proofing structure is configured to be inserted into a cabinet along a first direction and includes a case and an elastic sheet module. The elastic sheet module is disposed on a side of the case and includes a first end disposed on the case, a second end opposite to the first end, a first protrusion portion and a second protrusion portion. The first protrusion portion is adjacent to the second end, protrudes from the case and is configured to abut against the cabinet. The second protrusion portion is farther from the second end than the first protrusion portion, protrudes from the case, and is configured to make the second end and the first protrusion portion move toward the interior of the case as being pressed by a force.