Stackable Laundry Appliance Assembly Without Separate Rack Structure

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Solution Overview

Problem

Existing laundry treating apparatuses require a separate, costly rack to stack washing and drying machines, which increases manufacturing costs and makes it difficult to easily move or carry one machine on top of the other.

Innovation Solution

A laundry treating apparatus with a guide panel and rear bracket system that allows for easy stacking and support of two treating apparatuses, enabling them to be carried and stacked securely without detaching, using a guide panel for rolling motion and a rear bracket for stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a separate rack is used to position one treating apparatus on the other, then the treating apparatuses can be stacked, but the manufacturing cost increases due to the large volume of the rack

Engineering Contradiction:
Improvestacking stabilityVSAvoidmanufacturing cost
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The rack structure is merged with the front panels of the treating apparatuses. The guide panel is detachably coupled to the lower front panel and coupled to the upper front panel, integrating the support function into the existing apparatus structure rather than using a separate rack component.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The guide panel serves multiple functions: it acts as a structural guide for alignment, provides a rolling surface for easy movement, and serves as part of the support structure. This multi-functionality eliminates the need for dedicated rack components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Stability of the object's composition

If a separate rack is used to position one treating apparatus on the other, then the treating apparatuses can be stacked, but it becomes difficult to easily carry the treating apparatus positioned on the top

Engineering Contradiction:
Improvestacking stabilityVSAvoidease of carrying
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The guide panel is designed to be detachable rather than fixed. It can be attached when stacking is needed and detached when the upper apparatus needs to be moved or serviced, providing dynamic adaptability to different operational requirements.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The guide panel acts as an intermediary component between the upper and lower treating apparatuses. It facilitates the stacking relationship while maintaining the ability to easily separate and move the upper apparatus when needed.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If a guide panel is detachably provided in the panel seating portion, then the guide panel can be attached or removed as needed, but the structure becomes more complex

Engineering Contradiction:
Improveflexibility of assemblyVSAvoidassembly structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The guide panel is segmented into a detachable portion and a fixed portion. The detachable portion can be coupled to or separated from the lower front panel, allowing flexible assembly while keeping the overall structure relatively simple through modular design.

Inventive Principle:
Principle #1Segmentation

4Ease of operation

If the guide panel performs a rolling motion in contact with the lower surface of the upper treating apparatus, then the upper apparatus can be easily moved, but the contact surface requires precise alignment

Engineering Contradiction:
Improveease of movementVSAvoidalignment precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The guide panel is pre-positioned and detachably coupled to the lower front panel before the upper apparatus is placed. This preliminary positioning ensures proper alignment of the rolling surface, reducing the alignment precision requirements during the actual stacking operation.

Inventive Principle:
Principle #10Preliminary action

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 reduces manufacturing costs by eliminating the need for a separate rack and facilitates easy handling and stacking of washing and drying machines, ensuring stability and preventing detachment during use.

Implementation Method 1

a roller provided on the guide panel body, performing a rolling motion in contact with the lower surface of the first treating apparatus when the second step is performed

Methodology Applied
Scientific EffectRolling motion: Roller

Data Source

PatentEP3875660B1Laundry treating apparatus and assembly method of the same
Publication Date: 2024.05.01 LG ELECTRONICS INC
  • EP3875660B1 patent drawingFigure 1
  • EP3875660B1 patent drawingFigure 2
  • EP3875660B1 patent drawingFigure 3

AI summary

An assembly method comprises a first step of positioning a second treating apparatus in a desired place, the apparatus including a second front panel (201), provided with an upper fastening unit (201A) bent from an upper surface (201B, 201) and extended to an upper portion, a second rear panel (128, 203), a second side panel (205); a second step of seating a first treating apparatus on the second treating apparatus, the first treating apparatus including a first front panel (101), a first rear panel (103, 118), a first side panel (105); a third step of coupling the upper fastening unit (201A) with a lower portion of the first treating apparatus; and a fourth step of coupling a control panel (500) onto a panel seating portion provided between a lower surface of the first front panel (101) and the upper surface (201B, 201) of the second front panel (201).