Household appliance comprising a leveling assembly

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Solution Overview

Problem

Existing appliance leveling systems fail to efficiently adjust the gap between the front panel and doors on uneven surfaces, leading to instability and aesthetic issues.

Innovation Solution

A leveling assembly comprising a bracket housing with orthogonal portions, a leveler with a threaded shaft, and a knob, which allows for adjustable coupling to the frame and console, enabling precise adjustment of the gap between the front panel and doors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If existing leveling systems are used, then the appliance can be installed on uneven surfaces, but the gap between the front panel and doors cannot be precisely adjusted

Engineering Contradiction:
Improvegap adjustment precisionVSAvoidleveling system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The leveling assembly is nested within the console structure, with the bracket housing containing the leveler mechanism. The leveler with threaded shaft is housed within the bracket housing, creating a compact nested arrangement that achieves precise gap adjustment without adding external complexity to the appliance structure.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The leveling system incorporates a threaded shaft mechanism that allows dynamic adjustment of the gap between the front panel and doors. The rotatable shaft with external threading enables continuous position adjustment along the vertical axis, transforming a static mounting structure into a dynamically adjustable one for precise gap control.

Inventive Principle:
Principle #15Dynamics

2Reliability

If the gap between front panel and doors is not adjusted, then the structure is simpler, but the appliance appearance and stability are compromised

Engineering Contradiction:
Improveappliance stabilityVSAvoidcoupling system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The coupling between the console and frame is segmented into adjustable components. The leveling assembly is divided into a bracket housing portion attached to the console and a leveler portion that interfaces with the frame, allowing independent adjustment of each segment to achieve stable alignment without requiring complete system redesign.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system changes the positional parameter of the console relative to the frame by adjusting the gap distance. The threaded shaft mechanism enables continuous variation of the vertical position parameter, allowing the appliance to adapt to different installation conditions and achieve stable appearance by modifying the spacing parameter between components.

Inventive Principle:
Principle #35Parameter changes

3Measurement precision

If manual adjustment methods are used, then the system is simpler, but the alignment precision and consistency are poor

Engineering Contradiction:
Improvealignment precisionVSAvoidadjustment operation ease
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The manual adjustment method is replaced with a threaded mechanical adjustment system. The rotatable shaft with external threading provides mechanical advantage, allowing precise positional control through rotation rather than requiring complex manual positioning or specialized tools, thus improving alignment precision while maintaining ease of operation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 provides stable and adjustable alignment of the user interface relative to the frame, maintaining a consistent gap and enhancing the appliance's stability and appearance.

Implementation Method 1

A leveler (36) is operably coupled to the carrier (110) and is configured to translate the carrier (110) between a first position and a second position. The leveler (36) has a shaft (38) that defines threads along a length L of the shaft (38).

Methodology Applied
Scientific EffectThreaded mechanism: Screw

Data Source

PatentEP3879183B1Household appliance comprising a leveling assembly
Publication Date: 2023.10.04 WHIRLPOOL CORP
  • EP3879183B1 patent drawingFigure 1
  • EP3879183B1 patent drawingFigure 2
  • EP3879183B1 patent drawingFigure 3A~3B

AI summary

A leveling assembly (22) for a user interface (16) includes a bracket housing (26) that defines an aperture (30). A carrier (110) is disposed within the bracket housing (26). The carrier (116) defines an opening (116) proximate to the aperture (30) defined by the bracket housing (26). An engagement feature (112) is coupled to the carrier (110) and extends through the opening (116) and the aperture (30). A leveler (36) is operably coupled to the carrier (110) and is configured to translate the carrier (110) between a first position and a second position relative to the aperture (30) defined by the bracket housing (26).