Welded Electrical Cabinet Frame With Sealing and Wider Assembly Area

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Solution Overview

Problem

Existing electrical cabinet structures face challenges in providing a compact, rigid, and easily manufacturable design with adequate sealing and versatile fastening options that maximize the useful assembly area while preventing moisture and flame infiltration.

Innovation Solution

A welded frame structure composed of vertical and horizontal profiles with lifting brackets and a cage nut system for easy assembly and access, offering excellent sealing, structural rigidity, and a wide front opening to increase the internal useful area.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If complex format profiles with several edges and curves are used, then sealing capacity is improved, but the useful area inside the cabinet is reduced and construction difficulty increases

Engineering Contradiction:

Improvesealing capacityVSAvoiduseful area

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The cabinet structure is divided into modular components: straight profile sections, corner pieces, and separate sealing elements. This segmentation allows each component to be optimized independently - corner pieces provide sealing functionality without requiring complex curved profiles throughout the entire structure, thereby maintaining useful interior space while ensuring sealing capacity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Separate sealing elements are introduced as intermediary components that bridge the gap between simple straight profile sections and the requirement for sealing capacity. These sealing elements are positioned at critical joints and interfaces, providing the necessary sealing function without compromising the simplicity and space-efficiency of the main profile structure.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If complex format profiles with several edges and curves are used, then sealing capacity is improved, but construction difficulty increases

Engineering Contradiction:

Improvesealing capacityVSAvoidconstruction difficulty

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of manufacture

If bent sheet metal profiles are used, then manufacturing simplicity is improved, but structural rigidity is reduced

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidstructural rigidity

Core Design Contradiction:

Ease of manufactureVSStrength

Solution Approach 1:

The structure combines bent sheet metal profiles with additional reinforcing elements and rigid corner pieces. The bent sheet metal provides the basic cabinet body and simplicity of manufacture, while the added reinforcing elements and corner pieces compensate for the reduced structural rigidity, creating a composite structure that achieves both manufacturing simplicity and adequate strength.

Inventive Principle:

Principle #40Composite materials

4Ease of manufacture

If narrow sealing areas are used, then manufacturing simplicity is improved, but sealing effectiveness is reduced causing infiltrations

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidsealing effectiveness

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

Instead of providing uniform sealing width throughout the entire cabinet structure, sealing elements are strategically positioned at critical locations where infiltrations are most likely to occur (corners, joints, and interface areas). This local quality approach ensures sealing effectiveness at critical points while maintaining manufacturing simplicity and avoiding the need for uniformly wide sealing areas throughout.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12088068B2Welded board and structure for electrical cabinet

Publication Date: 2024.09.10 FRANCISQUINI MELQUISEDEC

AI summary

WELDED BOARD AND ELECTRICAL CABINET STRUCTURE presents a cabinet built with welded frames that use vertical and horizontal profiles, having an internal fastening wall with holes and cutouts to the fitting of a cage nut and an internal fastening tab, a side sealing surface, a front sealing surface and the isolation barrier, the structure being assembled with at least two welded frames, which are assembled in parallel and joined through four depth profiles, said depth profiles being joined directly to the welded frames vertices.