Foldable Display Hinge Structure With Detent Angle Locking

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Solution Overview

Problem

The challenge is to design a hinge structure for foldable electronic devices that allows for a larger display while maintaining compactness, and provides a secure and user-friendly mechanism for rotating the device between unfolded and folded states.

Innovation Solution

The proposed solution involves a hinge structure that includes rotating members, detent members, and pin members. The detent members provide an elastic force to the pin members, allowing the device to be securely fastened at specific angles, enhancing user control and convenience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If a larger display is implemented to satisfy multimedia service requirements, then the display area is increased, but the device size and complexity increase

Engineering Contradiction:
Improvedisplay areaVSAvoiddevice structure complexity
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The hinge structure employs nested components where the detent member is positioned within the rotating member, and the pin member slides within the detent slot. This nesting arrangement allows multiple functional elements to occupy overlapping spatial volumes, enabling a larger display area while containing the overall device complexity through compact component integration.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Adaptability or versatility

If a hinge structure with multiple components is used to enable rotation between folded and unfolded states, then the adaptability is improved, but the device complexity increases

Engineering Contradiction:
Improverotation state adaptabilityVSAvoidhinge structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The hinge structure achieves multi-functionality through a integrated design where the rotating member simultaneously provides rotational support and houses the detent mechanism. The detent member with its slot and elastic element serves both as a positioning mechanism and a locking mechanism. This multi-functional approach enables the hinge to provide rotation, stabilization, and locking capabilities while minimizing the number of separate components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Reliability

If a detent mechanism with elastic force is implemented to secure the device at specific angles, then the reliability is improved, but the device complexity increases

Engineering Contradiction:
Improvepositioning reliabilityVSAvoidhinge mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The detent mechanism merges the positioning function and the locking function into a single integrated system. The detent member combines the elastic element, the slot structure, and the engagement feature in one component. The pin member serves dual purposes as both a connector and a trigger for the detent mechanism. This merging of functions achieves reliable positioning at specific angles while minimizing the number of separate components required.

Inventive Principle:
Principle #5Merging (Combining)

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 effectively addresses the need for a compact yet functional hinge structure, enabling the device to maintain a secure and user-friendly operation across various angles, thus enhancing the overall user experience.

Implementation Method 1

The detent member may include a first detent member disposed in the first rotating member and including a first detent slot and/or a second detent member disposed in the second rotating member and including a second detent slot. The pin member may include a first pin member slidably connected to the first detent slot and/or a second pin member slidably connected to the second detent slot. The first detent member may be configured to provide an elastic force to the first pin member. The second detent member may be configured to provide an elastic force to the second pin member.

Methodology Applied
Scientific EffectElastic force: Elasticity

Data Source

PatentUS12339703B2Electronic device including hinge structure
Publication Date: 2025.06.24 SAMSUNG ELECTRONICS CO LTD
  • US12339703B2 patent drawing
  • US12339703B2 patent drawing
  • US12339703B2 patent drawing

AI summary

According to an embodiment of the disclosure, an electronic device may comprise a first housing, a second housing, a hinge structure, and/or a flexible display. The hinge structure may be rotatably connect the second housing to the first housing. The flexible display may be at least partially bendable in response to the rotation of the second housing relative to the first housing. The hinge structure may include at least one rotating member, at least one detent member, and/or at least one pin member. The rotating member may include a first detent member coupled to the first housing and rotatable about a first rotational axis and/or a second detent member coupled to the second housing and rotatable about a second rotational axis parallel to the first rotational axis. The detent member may include a first detent member disposed in the first rotating member and including a first detent slot and/or a second detent member disposed in the second rotating member and including a second detent slot. The pin member may include a first pin member slidably connected to the first detent slot and/or a second pin member slidably connected to the second detent slot. The first detent member may be configured to provide an elastic force to the first pin member. The second detent member may be configured to provide an elastic force to the second pin member.