Foldable Hinge Structure With Elastic Arms for Stable Display Motion

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Solution Overview

Problem

Existing foldable portable electronic devices face challenges in maintaining stability and reducing movement between hinge structures, which can lead to inconvenience and decreased device lifespan.

Innovation Solution

The proposed solution involves a hinge structure with a first rotation member and a second rotation member, each coupled to a housing, along with a first arm and a second arm, and elastic bodies to press these arms. The arms include upper and lower arms with inclined surfaces, allowing for precise contact and reduced movement during folding and unfolding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If a foldable display is used to increase screen size while maintaining portability, then the display area is improved, but the stability and movement control of the hinge structure deteriorates

Engineering Contradiction:
Improvedisplay areaVSAvoidhinge structure stability
Core Design Contradiction:
Area of stationary objectVSStability of the object's composition

Solution Approach 1:

The hinge structure is divided into multiple independent components including first and second rotation members, first and second arms, and elastic bodies. Each component performs a specific function, allowing precise control of the foldable display's movement while maintaining overall stability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The elastic bodies are pre-configured to press the arms before folding or unfolding occurs. This preliminary action ensures that the arms maintain proper contact and alignment throughout the movement, preventing instability and excessive movement between housings.

Inventive Principle:
Principle #10Preliminary action

2Stability of the object's composition

If the hinge structure components are increased to improve stability, then the hinge stability is improved, but the device complexity increases

Engineering Contradiction:
Improvehinge structure stabilityVSAvoidhinge structure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The hinge structure merges rotational and elastic elements into a unified mechanism. The rotation members and arms work together with the elastic bodies to provide both stability and movement control without requiring separate complex systems for each function.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The hinge structure incorporates dynamic elements that adapt during operation. The elastic bodies dynamically adjust the pressure on the arms during folding and unfolding, maintaining optimal contact and stability throughout the range of motion rather than requiring fixed rigid connections.

Inventive Principle:
Principle #15Dynamics

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 design enhances the stability of the hinge structure by minimizing movement and maintaining contact between the arm members and link members, thereby improving the robustness of the hinge operation and extending the device's lifespan.

Implementation Method 1

a first elastic body configured to press the first arm and a second elastic body configured to press the second arm

Methodology Applied
Scientific EffectElastic force: Elasticity

Data Source

PatentUS20250126729A1Hinge structure and portable electronic device including the same
Publication Date: 2025.04.17 SAMSUNG ELECTRONICS CO LTD
  • US20250126729A1 patent drawing
  • US20250126729A1 patent drawing
  • US20250126729A1 patent drawing

AI summary

Disclosed are a portable electronic device including a housing, in which at least a portion of a display is disposed, and a hinge structure coupled to the housing, wherein at least one of arms included in the hinge structure includes a plurality of sub-arms, and is rotated at a specific angle and in different directions due to pressing of an elastic body included in the hinge structure, and a portable electronic device including the same.