Variable-Torque Friction Hinge for Multi-Orientation Kickstands

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Solution Overview

Problem

Mobile computing devices lack effective solutions for transitioning from handheld use to other orientations without compromising their mobile aesthetic, as traditional adaptation methods are awkward and do not support varied usage scenarios.

Innovation Solution

A friction hinge mechanism that provides a variable torque profile, allowing a support component, such as a kickstand, to be adjustably attached to a computing device, enabling it to be rotated to different positions for various orientations while maintaining a consistent alignment and preventing damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional adaptation methods are used to support varied usage scenarios, then the device can be used in multiple orientations, but the mobile aesthetic is compromised and the device appears awkward

Engineering Contradiction:
Improveusage orientationVSAvoidmobile aesthetic
Core Design Contradiction:
Adaptability or versatilityVSShape

Solution Approach 1:

The kickstand is nested within the device housing, allowing it to be stored inside the device body when not in use. This nesting approach maintains the sleek mobile aesthetic while enabling multiple usage orientations when the kickstand is deployed.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The kickstand employs a friction hinge mechanism that allows dynamic adjustment to various angles and positions. This dynamic capability enables the device to adapt to different usage scenarios while maintaining a clean appearance when the kickstand is retracted.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If a support component is added to enable multiple orientations, then usage versatility is improved, but the device complexity increases

Engineering Contradiction:
Improveusage orientationVSAvoidhinge mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The friction hinge mechanism is designed to be self-regulating, using friction between mating surfaces to maintain position without requiring additional motors, sensors, or control systems. This self-service approach enables multiple orientations while minimizing the increase in device complexity.

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If the kickstand is rotated to different positions, then multiple orientations are supported, but misalignment and potential damage may occur

Engineering Contradiction:
Improvedisplay orientationVSAvoiddisplay alignment
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The friction hinge mechanism incorporates localized friction zones at specific positions that provide natural stopping points and alignment features. This local quality approach ensures that when the kickstand is rotated to different positions, the display maintains proper alignment and prevents misalignment damage.

Inventive Principle:
Principle #3Local quality

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 seamless transition between handheld and other usage modes, supporting multiple orientations without compromising the device's aesthetic, and ensures consistent alignment and protection of the display, enhancing user interaction and functionality.

Implementation Method 1

A friction hinge is described. Generally, the friction hinge provides a variable torque profile for a movable component.

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3516476B1Friction hinge
Publication Date: 2022.04.13 MICROSOFT TECHNOLOGY LICENSING LLC
  • EP3516476B1 patent drawingFigure 1
  • EP3516476B1 patent drawingFigure 2~3
  • EP3516476B1 patent drawingFigure 4~5

AI summary

A friction hinge is described. Generally, the friction hinge provides a variable torque profile for a movable component.