Appliance Door with Detachable Cover Shell for Design Customization

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Solution Overview

Problem

Household appliance doors, particularly in refrigeration appliances, have limited visual design variability due to their fixed outer design matching the housing color and material, lacking flexibility and user individuality.

Innovation Solution

A door design featuring a non-destructively detachable cover shell that can be magnetically, snap-connected, or Velcro-attached to the base body, allowing for various colors, materials, and designs, providing both visual and functional flexibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the outside is firmly connected to the door and designed in the same color as the housing, then the door has structural stability, but the variability of the visual design is limited

Engineering Contradiction:
Improvevisual design variabilityVSAvoidstructural stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The door is divided into two separate components: the base body (door) and the cover shell (outside). The cover shell is detachably attached to the base body using magnets, allowing the visual design to be changed by replacing the cover shell while the base body remains stable. This segmentation enables independent optimization of structural stability and design variability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The attachment between the cover shell and base body is made dynamic and reversible through magnetic attachment. The cover shell can be easily attached and detached without destructive forces, allowing the visual design to adapt to different user preferences while maintaining structural integrity during normal use.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If the outside is painted or made of reflective material, then the visual design is achieved, but the flexibility and user individuality are reduced

Engineering Contradiction:
Improveuser individualityVSAvoidmanufacturing flexibility
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

By separating the cover shell from the base body, each component can be manufactured independently using different materials and processes. The cover shell can be produced in various colors, materials, and designs to match user preferences, while the base body is manufactured once with standard materials.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The base body with its magnetic attachment system serves as a universal platform that can accommodate multiple different cover shells. This allows a single base body to support various visual designs and material choices, providing user individuality without requiring multiple complete door assemblies.

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

3Adaptability or versatility

If the cover shell is detachably attached using magnets, then the visual and functional variability is improved, but the device complexity increases

Engineering Contradiction:
Improvefunctional variabilityVSAvoidattachment mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The traditional mechanical fastening system (screws, clips, or adhesive) is replaced with a magnetic attachment system. Magnets provide sufficient holding force for the cover shell while allowing easy attachment and detachment without complex mechanical components, tools, or destructive forces.

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

Solution Approach 2:

The magnetic attachment system changes the attachment parameters from permanent or semi-permanent mechanical connections to a reversible magnetic field-based connection. This allows the cover shell to be securely held during normal use but easily removed and reattached by the user without tools or complex mechanisms.

Inventive Principle:
Principle #35Parameter changes

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

Enables a high level of user-specific design customization, protecting against scratches and dents, and allowing for easy replacement, maintaining a new appearance while reducing costs by using high-quality materials only for the cover shell.

Implementation Method 1

the cover shell is detachably attached to the base body in a non-destructive manner using magnets

Methodology Applied
Scientific EffectMagnetism: Magnetism

Data Source

PatentEP3011240B1Door for a domestic appliance with a front shell and domestic appliance with such a door
Publication Date: 2020.09.09 BSH HAUSGERATE GMBH
  • EP3011240B1 patent drawingFigure 1
  • EP3011240B1 patent drawingFigure 2~3
  • EP3011240B1 patent drawingFigure 4~5

AI summary

The invention relates to a door (3, 4) for a domestic appliance (1), comprising a main part (3a, 4a) which has an outer face (3b, 4b). A cover shell (5, 5', 5", 6, 6', 6") is arranged on the door (3, 4) in a non-destructively removable manner, and the outer face (3b, 4b) is covered by the cover shell (5, 5', 5", 6, 6', 6") at least in some regions. The invention also relates to a domestic refrigerator (1) comprising such a door (3, 4).