Magnetic Input Device Attachment with Rotatable Hinge

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Solution Overview

Problem

Conventional techniques for attaching input devices to mobile computing devices, such as keyboards, lack stability, especially when used on unstable surfaces like a user's lap, limiting user interactions.

Innovation Solution

The implementation of a rotatable hinge and magnetic coupling system that securely attaches an input device to a mobile computing device, providing both physical and communicative coupling, allowing for rotational movement and improved stabilization during use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional attachment techniques are used, then the input device can be attached to the computing device, but the attachment lacks stability especially on unstable surfaces

Engineering Contradiction:
Improveattachment stabilityVSAvoiduser interaction limitation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces conventional mechanical attachment mechanisms (screws, clips, adhesives) with a magnetic coupling system. The magnetic attachment mechanism uses magnetic fields to provide secure yet easily removable attachment, solving the stability problem while maintaining ease of operation. The magnetic force provides consistent holding strength that adapts to different surfaces including unstable ones like laps.

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

2Reliability

If a rigid fixed attachment is used, then stability is improved, but user interactions and rotational movements are limited

Engineering Contradiction:
Improveattachment stabilityVSAvoiduser interaction flexibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent implements a dynamic attachment system where the input device can rotate and adjust its position while remaining securely attached through magnetic coupling. The magnetic attachment allows the device to maintain stable connection during use while permitting rotational movements for different user interactions, combining stability with adaptability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The attachment system is divided into separate magnetic coupling components at different locations (front and back attachments). This segmentation allows independent attachment points that work together to provide both stability and rotational flexibility, enabling the device to be securely held while allowing user interactions.

Inventive Principle:
Principle #1Segmentation

3Reliability

If a magnetic coupling system is implemented, then attachment stability and rotational movement are achieved, but device complexity increases

Engineering Contradiction:
Improveattachment stabilityVSAvoidattachment mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical attachment mechanisms with a simpler magnetic coupling system. By using magnetic fields instead of mechanical interlocking components, the system achieves stable attachment and rotational movement with fewer parts and simpler structure, actually reducing overall device complexity despite the advanced attachment capability.

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

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 of the input device attachment, enabling consistent alignment and secure connection, thereby supporting efficient typing and other interactions on various surfaces, including unstable ones like a lap.

Implementation Method 1

The physical attachment of the spine is configured to be removable using a magnetic coupling between the spine and a surface of the computing device

Methodology Applied
Scientific EffectMagnetic coupling: Magnetism

Data Source

PatentEP3629126B1Input device attachment
Publication Date: 2023.01.11 MICROSOFT TECHNOLOGY LICENSING LLC
  • EP3629126B1 patent drawingFigure 1
  • EP3629126B1 patent drawingFigure 2
  • EP3629126B1 patent drawingFigure 3~4

AI summary

Input device attachment techniques are described. In one or more implementations, a device includes a portion (e.g., an input portion or cover) is configured to be positioned over a display device of a computing device to cover the display device. The device also includes a spine (e.g., a mid-spine) that is physically attached to the portion in a manner that supports rotational movement of the portion in relation to the display device. The physical attachment of the spine is configured to be removable using a magnetic coupling between the spine and a surface of the computing device that includes the display device.