Magnetic Flexible Display Hinge for Compact Folding Locking

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Solution Overview

Problem

Large-screen display devices compromise portability due to their rigid structure, necessitating the development of flexible display technologies that can be bent or folded for size reduction.

Innovation Solution

A flexible assembly comprising a shaft body, rotating and sliding components, and magnetic bodies that create locking and attractive forces to facilitate the bending and unfolding of a flexible display screen, ensuring secure locking and smooth operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If a flexible display screen is matched with a flexible assembly to enable bending, then the size of the display device after bending becomes smaller, but the portability is still compromised due to the complex mechanical structure required for controlled bending

Engineering Contradiction:
Improvesize of display device after bendingVSAvoidmechanical structure complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical locking mechanisms with a magnetic field-based locking system. Magnetic bodies are positioned on the rotating component and sliding component to create magnetic attraction forces that automatically lock the assembly at specific bending angles, eliminating the need for traditional mechanical locks while maintaining structural stability.

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

Solution Approach 2:

The patent utilizes changes in magnetic field parameters (strength, direction, distribution) to control the locking and unlocking of the flexible assembly. By adjusting the magnetic pole directions and positions of the magnetic bodies, the system achieves controlled bending at different angles without mechanical intervention.

Inventive Principle:
Principle #35Parameter changes

2Stability of the object's composition

If magnetic bodies are used to create locking force for securing the bent position, then the structural integrity is maintained, but the magnetic interaction complexity increases

Engineering Contradiction:
Improvestructural integrity at bent positionVSAvoidmagnetic interaction complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The magnetic locking system is segmented into multiple magnetic bodies distributed at different positions and orientations. Each magnetic body contributes to the overall locking force at specific bending angles, allowing the system to achieve stable locking at multiple discrete positions through distributed magnetic interactions rather than a single complex magnetic mechanism.

Inventive Principle:
Principle #1Segmentation

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 the flexible display device to change size by bending, enhancing portability while maintaining structural integrity and user experience through controlled magnetic interactions.

Implementation Method 1

the first magnetic body and the second magnetic body are opposite to each other in a first direction as the first sliding component moves along a first linear path relative to the first rotating component... in a case where the first sliding component moves to an end of the first linear path, a first locking force is created between the first magnetic body and the second magnetic body

Methodology Applied
Scientific EffectMagnetic attraction force: Magnetism

Data Source

PatentUS20250003447A1Flexible assembly and display device
Publication Date: 2025.01.02 BOE TECHNOLOGY GROUP CO LTD
  • US20250003447A1 patent drawing
  • US20250003447A1 patent drawing
  • US20250003447A1 patent drawing

AI summary

A flexible assembly includes: a shaft body; a first rotating component rotatably connected to the shaft body; a first sliding component connected to the first rotating component; a first magnetic body fixed on the first rotating component; and a second magnetic body fixed on the first sliding component. The first magnetic body and the second magnetic body are opposite to each other in a first direction as the first sliding component moves along a first linear path relative to the first rotating component. In a case where the first sliding component moves to an end of the first linear path, a first locking force is created between the first and second magnetic bodies. In a case where the first sliding component moves to a middle of the first linear path, an attractive force between the first and second magnetic bodies is smaller than the first locking force.