Flexible Screen Support Frame for Stable Low-Noise Extension

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Solution Overview

Problem

The stability of extendable screens in terminal devices is unstable during extension and contraction processes, affecting user experience due to mechanical complexity and noise issues.

Innovation Solution

A supporting apparatus with a support frame featuring an overturning curved surface and a driving mechanism with an extendable rod, where the rod is connected to the display screen, allowing it to push the frame during extension and pull it during contraction, maintaining tight attachment and reducing noise through a hydraulic and magnetic module.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional mechanical structures are used for screen extension and contraction, then the screen can be extended and contracted, but the stability becomes unstable and mechanical noise increases

Engineering Contradiction:
Improvescreen extension and contraction capabilityVSAvoidstability during extension/contraction
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent replaces traditional mechanical extension/contraction structures with a magnetic field-based driving mechanism. The magnetic driving mechanism uses magnetic attraction and repulsion forces to achieve screen extension and contraction without complex mechanical linkages, thereby eliminating mechanical noise and improving stability during the extension/contraction process

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

Solution Approach 2:

The patent introduces a hydraulic damping mechanism to control the screen's movement during extension and contraction. The hydraulic damper provides fluid resistance that smooths the movement process, preventing instability and oscillations that would occur with purely mechanical systems

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Adaptability or versatility

If traditional mechanical structures are used for screen extension and contraction, then the screen can be extended and contracted, but mechanical complexity and noise increase

Engineering Contradiction:
Improvescreen extension and contraction capabilityVSAvoidmechanical structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent replaces traditional mechanical extension/contraction structures with a magnetic field-based driving mechanism. The magnetic driving mechanism uses magnetic attraction and repulsion forces to achieve screen extension and contraction without complex mechanical linkages, thereby eliminating mechanical noise and improving stability during the extension/contraction process

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

Solution Approach 2:

The patent employs a flexible support frame with an overturning curved surface that allows the screen to extend and contract through bending and deformation rather than rigid mechanical movements. This flexible structure simplifies the overall mechanism by eliminating the need for complex joints, bearings, and linkages

Inventive Principle:
Principle #30Flexible shells and thin films

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 solution enhances the stability and noise reduction of extendable screens by ensuring the display screen is always tightly attached during extension and contraction, while avoiding mechanical complexity, thus improving user experience.

Implementation Method 1

a hydraulic and magnetic module

Methodology Applied
Scientific EffectHydraulic pressure: Hydraulic Press

Implementation Method 2

a hydraulic and magnetic module

Methodology Applied
Scientific EffectMagnetic force: Magnetism

Data Source

PatentEP4068044A1Supporting apparatus, screen assembly and terminal device
Publication Date: 2022.10.05 BEIJING XIAOMI MOBILE SOFTWARE CO LTD
  • EP4068044A1 patent drawingFigure 1~2
  • EP4068044A1 patent drawingFigure 3
  • EP4068044A1 patent drawingFigure 4~5

AI summary

A supporting apparatus for supporting a flexible display screen includes a support frame provided with an overturning curved surface; and a driving mechanism arranged at a side, away from the overturning curved surface, of the support frame, wherein the driving mechanism is provided with an extendable rod, wherein an axial direction of the overturning curved surface is perpendicular to an extension/contraction direction of the extendable rod, and wherein the extendable rod is configured to be connected with the display screen overturned along the overturning curved surface, and the extendable rod is capable of pushing the support frame to move during extension and pulling the display screen to move during contraction..