Flexible Hinge Attachment for Secure Yet Removable Input Covers

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Solution Overview

Problem

Conventional techniques for attaching input devices or covers to mobile computing devices alternate between providing significant protection but being difficult to remove, or limited protection with ease of installation and removal.

Innovation Solution

A flexible hinge and removable attachment system using a combination of magnetic and mechanical coupling, with a minimum bend radius and support layer to protect conductors, allowing secure physical and communicative coupling while facilitating easy detachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional attachment techniques provide significant protection, then device protection is improved, but removal difficulty increases

Engineering Contradiction:

Improveprotection from environmental harmVSAvoiddifficulty to remove

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The attachment system is divided into separate magnetic components: a first magnetic component in the input device and a second magnetic component in the computing device. This segmentation allows the attachment to be strong when connected but easily separated by overcoming the magnetic force, resolving the contradiction between protection strength and ease of removal.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The magnetic attachment mechanism changes the attachment parameter from mechanical interlocking (difficult to remove) to magnetic attraction (easy to remove by pulling). The magnetic force provides sufficient holding strength for protection while allowing simple detachment through force application, thus resolving the contradiction between strong attachment and easy removal.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If flexible hinge allows repeated connection and removal, then ease of operation is improved, but conductor reliability deteriorates

Engineering Contradiction:

Improverepeated connection and removalVSAvoidconductor integrity

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces the mechanical conductor system (wires running through the flexible hinge) with a wireless communication system. The input device and computing device communicate wirelessly, eliminating the physical conductors that would be damaged by repeated flexing, thus resolving the contradiction between operational flexibility and conductor reliability.

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

Enables secure attachment and easy removal of input devices or covers, protecting components from environmental harm while maintaining operational integrity.

Implementation Method 1

A flexible hinge and removable attachment system using a combination of magnetic and mechanical coupling

Methodology Applied

Scientific EffectMagnetic coupling: Magnetism

Data Source

PatentEP4040260B1Flexible hinge and removable attachment

Publication Date: 2025.12.10 MICROSOFT TECHNOLOGY LICENSING LLC

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AI summary

Flexible hinge and removable attachment techniques are described. In one or more implementations, a flexible hinge is configured to communicatively and physically couple an input device to a computing device and may implement functionality such as a support layer and minimum bend radius. The input device may also include functionality to promote a secure physical connection between the input device and the computing device. One example of this includes use of one or more protrusions that are configured to be removed from respective cavities of the computing device along a particular axis but mechanically bind along other axes. Other techniques include use of a laminate structure to form a connection portion of the input device.