Magnetic Mounting for Household Appliance Electrical Components

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Solution Overview

Problem

Existing household appliances face challenges in securely fastening electrical components like interior lights or electronics housings without generating noise or damaging other components during operation, and existing solutions like clipping, screwing, or gluing are either noisy, aesthetically unappealing, or have limited service life.

Innovation Solution

A household appliance with a holding device featuring a magnetic element that uses ferromagnetic material for secure attachment, combined with a sealant to prevent noise and damage, and an adhesive for enhanced fixation, allowing for simplified assembly and increased service life without visible external connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If electrical components are fastened by clipping, screwing or gluing to an inner wall, then they can be securely attached, but noise is generated during operation or surrounding components are damaged

Engineering Contradiction:
Improvesecure attachmentVSAvoidnoise and damage
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces mechanical fastening systems (clips, screws, glue) with a magnetic field-based holding system. The magnetic element generates a magnetic attraction force that acts on the ferromagnetic material in the inner wall, securing the electrical component without mechanical contact that causes noise or damage.

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

Solution Approach 2:

The magnetic field serves as an intermediary between the holding device and the inner wall. Instead of direct mechanical contact, the magnetic attraction force transmits the holding action through space, preventing direct mechanical interaction that would generate noise or damage components.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If screw connections or clip connections are used to fasten electrical components, then secure attachment is achieved, but visible connections are created on the outside of the household appliance

Engineering Contradiction:
Improvesecure attachmentVSAvoidaesthetic appearance
Core Design Contradiction:
ReliabilityVSShape

Solution Approach 1:

By replacing mechanical fastening systems with a magnetic holding system, the patent eliminates the need for visible screws or clips on the exterior. The magnetic element can be positioned and secured internally, providing both functional attachment and aesthetic appearance.

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

3Shape

If adhesive solutions are used to fasten electrical components, then no visible connections are created, but the service life of the holding device is reduced

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidservice life
Core Design Contradiction:
ShapeVSDuration of action of stationary object

Solution Approach 1:

The patent replaces adhesive bonding with magnetic attraction, eliminating the degradation issues associated with adhesives over time. The magnetic holding device maintains consistent holding force throughout its service life without the weakening, drying out, or chemical degradation that plagues adhesive solutions.

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

4Ease of operation

If clip connections are used to fasten electrical components, then assembly is simplified, but preparatory measures such as deburring are required on surrounding components

Engineering Contradiction:
Improveassembly simplicityVSAvoidpreparatory measures required
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

By using magnetic attraction instead of mechanical clips, the patent eliminates the need for precise mechanical fits and surface preparations like deburring. The magnetic element can be positioned and secured without requiring the surrounding components to have specially prepared surfaces, simplifying both assembly and manufacturing.

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 magnetic holding device securely fastens electrical components without noise or damage, offers improved aesthetics by eliminating visible connections, and extends service life compared to traditional methods, while ensuring reliable sealing and protection against mechanical influences.

Implementation Method 1

the holding device having a magnetic element for generating a magnetic attraction force and the inner wall having a ferromagnetic material for fastening of the magnetic element

Methodology Applied
Scientific EffectMagnetic attraction force: Magnetism

Data Source

PatentEP3102728B1Household appliance
Publication Date: 2021.08.25 BSH HAUSGERATE GMBH
  • EP3102728B1 patent drawingFigure 1~2
  • EP3102728B1 patent drawingFigure 3

AI summary

The invention relates to a household appliance comprising an electrical component (103) which has a holding device (101) for fastening the electrical component (103) to an inner wall (105) of the household appliance, the holding device (101) comprising a magnetic element (107) for generating a magnetic attractive force and the inner wall (105) comprising a ferromagnetic material for fastening the magnetic element (107).