Outdoor Unit Electrical Box Structure for Multi-Directional Impact Resistance

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Solution Overview

Problem

Conventional air conditioner outdoor units' electrical component boxes are prone to deformation due to insufficient support, making them vulnerable to impacts in various directions.

Innovation Solution

The outdoor unit incorporates an electrical component box structure with a partition plate, front plate, and L-shaped arm, supported by a perpendicular support post, which fixes the partition and front plates to a box base plate, providing enhanced stability against impacts in the front-back, left-right, and top-bottom directions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the electrical component box uses only coupling members to support plate-like members in a V-shape, then the device complexity is reduced, but the strength and stability against impact are insufficient

Engineering Contradiction:
Improvestructure complexityVSAvoidimpact resistance
Core Design Contradiction:
Device complexityVSStrength

Solution Approach 1:

The electrical component box is segmented into multiple functional parts: partition plate, front plate, box base plate, L-shaped arm, and support post. Each part performs a specific structural function, distributing the load and impact forces across multiple components rather than relying on a single complex structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support post adds a vertical dimension to the support structure, joining perpendicularly to both the arm and box base plate. This three-dimensional arrangement provides stability against impacts in multiple directions (front-back, left-right, and top-bottom), transforming a two-dimensional V-shaped support into a three-dimensional rigid framework.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Manufacturing precision

If the electrical component box uses multiple coupling members arranged like a bridge, then the manufacturing precision is improved, but the stability against deformation under impact is insufficient

Engineering Contradiction:
Improveassembly precisionVSAvoidstructural stability
Core Design Contradiction:
Manufacturing precisionVSStability of the object's composition

Solution Approach 1:

The L-shaped arm merges the support function with the coupling function. It couples the partition plate to the front plate while simultaneously providing a mounting surface for the support post, combining multiple structural roles into a single integrated component that enhances overall stability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The electrical component box employs a composite structure combining different plate-like members (partition plate, front plate, box base plate) with the L-shaped arm and support post. This composite arrangement creates a rigid framework that resists deformation better than单一 materials or simple coupling structures.

Inventive Principle:
Principle #40Composite materials

3Ease of manufacture

If the electrical component box uses oblique coupling members, then the ease of manufacture is improved, but the reliability under impact load is insufficient

Engineering Contradiction:
Improveassembly easeVSAvoidimpact resistance
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The L-shaped arm is designed with predetermined right-angle configurations that are pre-formed during manufacturing. This preliminary shaping allows the arm to provide orthogonal support and coupling without requiring complex field adjustments or specialized assembly procedures, maintaining ease of manufacture while ensuring structural reliability.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS8978393B2Outdoor unit of air conditioner
Publication Date: 2015.03.17 FUJITSU GENERAL LTD
  • US8978393B2 patent drawing
  • US8978393B2 patent drawing
  • US8978393B2 patent drawing

AI summary

An outdoor unit of air conditioner for ensuring strength against an impact applied to an electrical component box in a front-back, left-right, or top-bottom direction. The electrical component box has an upper partition plate, a front plate, and a box base plate coupled to one another and supported by an arm and a support post. The arm substantially perpendicularly supports the front plate in a front-back direction, and the upper partition plate. Thus, the electrical component box is strong enough to withstand an impact in the front-back and the left-right directions. Further, the support post substantially perpendicularly supports the arm and the box base plate in a top-bottom direction allowing the electrical component box to withstand an impact in the top-bottom direction. Also material of the electrical component box can be reduced.