Foldable Support Assembly for Screen Stress Compensation

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Solution Overview

Problem

The bending process in foldable electronic devices causes large internal stress on the screen, leading to damage and reduced structural stability.

Innovation Solution

A foldable supporting apparatus with a mounting base, rotating shaft, telescopic assembly, and pushing assembly that adjusts the distance between components to compensate for differences in screen length between folded and unfolded states, using a telescopic assembly and inclined pushing surfaces to manage stress.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the screen is folded to achieve portability, then the device becomes more portable, but large internal stress is generated on the screen causing damage

Engineering Contradiction:
ImproveportabilityVSAvoidscreen durability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

A supporting assembly is introduced as an intermediary component between the screen and the folding mechanism. This assembly includes a supporting plate with through holes that allows the screen to pass through, and a supporting rod that can move relative to the screen. The supporting assembly mediates the stress during folding by providing structural support while allowing the screen to maintain its shape, thereby preventing screen damage while enabling portability.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The supporting rod is designed to move dynamically during the folding process. When the device is folded, the supporting rod moves to a position where it supports the screen from behind, preventing the screen from bending excessively. When the device is unfolded, the supporting rod moves away to allow the screen to flatten. This dynamic adjustment allows the system to maintain screen integrity while achieving portability through folding.

Inventive Principle:
Principle #15Dynamics

2Area of stationary object

If the screen size is increased to meet display requirements, then the display area is enlarged, but the device portability is reduced

Engineering Contradiction:
Improvedisplay areaVSAvoidportability
Core Design Contradiction:
Area of stationary objectVSAdaptability or versatility

Solution Approach 1:

The supporting assembly provides dynamic structural support that enables the screen to be folded without permanent deformation. This allows a large-area screen to be used while maintaining portability, as the screen can be folded into a compact form factor when not in use, yet still provide a large display area when unfolded for viewing.

Inventive Principle:
Principle #15Dynamics

3Device complexity

If the folding mechanism is simplified to reduce complexity, then the device structure is simpler, but the screen is more prone to damage during bending

Engineering Contradiction:
Improvefolding mechanism complexityVSAvoidscreen protection
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The supporting assembly serves as a simple intermediary component that can be integrated into existing folding mechanisms without significantly increasing complexity. The supporting plate with through holes and the movable supporting rod add minimal structural elements while providing substantial screen protection during the folding process.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Prevents large internal stress on the screen by compensating for distance differences during folding and unfolding, enhancing the structural stability and durability of foldable electronic devices.

Implementation Method 1

the rotating member is in transmission connection with the rotating shaft; in the axial direction of the rotating shaft, one of the rotating member and the push-pull member is relatively fixed to the mounting base, and the other thereof is relatively fixed to the pushing assembly

Methodology Applied
Scientific EffectMechanical transmission: Mechanical Advantage

Implementation Method 2

the pushing assembly is provided with a first inclined pushing surface, where the first inclined pushing surface is configured to change a distance between the base and the rotating shaft in a radial direction of the rotating shaft in a reciprocating manner

Methodology Applied
Scientific EffectInclined plane mechanism: Inclined Plane

Data Source

PatentEP4440086B1Foldable supporting apparatus and electronic device
Publication Date: 2025.11.19 VIVO MOBILE COMM CO LTD
  • EP4440086B1 patent drawingFigure 1
  • EP4440086B1 patent drawingFigure 2
  • EP4440086B1 patent drawingFigure 3

AI summary

Disclosed in this application are a foldable supporting apparatus and an electronic device, which relate to the field of communication devices. The foldable supporting apparatus includes a mounting base, a rotating shaft, a telescopic assembly, a pushing assembly, and a base, where the mounting base is rotatably connected to the rotating shaft, and the mounting base and the rotating shaft are relatively fixed in an axial direction of the rotating shaft; the pushing assembly and the rotating shaft are relatively fixed in a circumferential direction of the rotating shaft, and the pushing assembly and the rotating shaft are movably matched in the axial direction; the mounting base is connected to the pushing assembly through the telescopic assembly, and in a case that a length of the telescopic assembly is changed, the pushing assembly is driven to move relative to the mounting base; and the pushing assembly is provided with a first inclined pushing surface, where the first inclined pushing surface is configured to change a distance between the base and the rotating shaft in a radial direction of the rotating shaft in a reciprocating manner in a case that the pushing assembly reciprocates in the axial direction of the rotating shaft.