Foldable Magnet Support Structure for Display-Safe Closure

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Solution Overview

Problem

Electronic devices with magnets to maintain a folded state face issues due to weakened magnetic force from heat or external impact, leading to malfunctions and potential damage to displays.

Innovation Solution

The solution involves enhancing the attaching force between structures and magnets by direct contact with the display's rear surface, using supports to adjust the distance between magnets and the display, and employing compressible elastic materials and shape memory alloys to ensure secure magnetic coupling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If magnets are disposed close to the display to enhance attaching force, then the magnetic coupling strength is improved, but the risk of magnet-induced damage to the display increases

Engineering Contradiction:
Improvemagnetic attaching forceVSAvoidmagnet damage to display
Core Design Contradiction:
ForceVSObject-affected harmful factors

Solution Approach 1:

A support structure is introduced as an intermediary element between the magnet and the display. This support maintains a controlled distance, allowing the magnet to exert sufficient magnetic force for maintaining the folded state while preventing direct contact that could cause damage to the display surface.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The distance parameter between the magnet and display is optimized to a specific range. By controlling this parameter, the system achieves sufficient magnetic coupling force while maintaining safety margins to prevent display damage. The support structure enables this precise parameter control.

Inventive Principle:
Principle #35Parameter changes

2Stability of the object's composition

If magnets are disposed on the rear surface of the display, then the folded state is maintained, but the pressing force may damage the display

Engineering Contradiction:
Improvefolded state stabilityVSAvoiddisplay damage from pressing force
Core Design Contradiction:
Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The support structure serves as a mediator that distributes and controls the pressing force. It allows the magnet to maintain the folded state through controlled magnetic attraction while preventing excessive localized pressure that could damage the display through the support's load-distributing geometry.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Object-affected harmful factors

If the distance between magnets and display is increased to prevent damage, then display safety is improved, but the magnetic attaching force is weakened

Engineering Contradiction:
Improvedisplay protectionVSAvoidmagnetic attaching force
Core Design Contradiction:
Object-affected harmful factorsVSForce

Solution Approach 1:

The optimal distance parameter is precisely controlled through the support structure design. This controlled separation maintains display safety while keeping the distance within the effective range of magnetic force, thus preventing both damage and excessive weakening of the attaching force.

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

This approach maintains a stable folded state, prevents battery consumption, and protects the display from magnet-induced damage while ensuring reliable magnetic engagement.

Implementation Method 1

a second magnetic body disposed between the first cover surface and the second cover surface and is positioned at a position to effect magnetic coupling of the first magnetic body to the second magnetic body in the closed state

Methodology Applied
Scientific EffectMagnetic coupling: Magnetism

Implementation Method 2

The support may be formed of a compressible elastic material

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 3

The support may include one or more hollows penetrating in a direction perpendicular to the connection direction

Methodology Applied
Scientific EffectShape memory effect: Shape Memory Alloy

Data Source

PatentUS12494812B2Electronic device including magnets
Publication Date: 2025.12.09 SAMSUNG ELECTRONICS CO LTD
  • US12494812B2 patent drawing
  • US12494812B2 patent drawing
  • US12494812B2 patent drawing

AI summary

An electronic device including a first housing and second housing that are movable relative to one another such that the electronic device is transitionable between an open state and a closed state. The second housing includes first and second cover surfaces. In the open state, the first surface of the first housing may be visually exposed to an outside and in the closed state, the first cover surface may face the first surface and visually occludes the first housing surface. A first magnetic body may be disposed inside the first housing and may be positioned between the second surface and the display. A second magnetic body between the first and second cover surfaces may be positioned at a position to effect magnetic coupling of the first and second magnetic bodies in the closed state. A support coupling the second surface and the first magnetic body may be transitionable between shortened and expanded lengths.