Flexible Earbud Charging Case for Tactile Feedback and Breathability

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Solution Overview

Problem

Existing charging solutions for in-ear audio listening devices are not pocket-friendly and lack tactile and vision feedback for confirming the presence of the devices, and they do not provide adequate breathability to maintain device freshness.

Innovation Solution

A charging container with a flexible second part that is removably or permanently attached to a first part, featuring a flexible and potentially transparent material, allowing for a thinner design, tactile feedback, and vision confirmation of device presence, along with breathability and magnetic hinge for easy assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a rigid charging container is used, then structural strength is maintained, but the container becomes bulky and less pocket-friendly

Engineering Contradiction:

Improvestructural strengthVSAvoidcontainer thickness

Core Design Contradiction:

StrengthVSVolume of moving object

Solution Approach 1:

The patent applies a flexible material for the second part (lid) of the charging container, replacing traditional rigid materials. This flexible material maintains sufficient structural strength while enabling the container to collapse to a thinner profile when empty, making it pocket-friendly and easy to carry without adding bulk.

Inventive Principle:

Principle #30Flexible shells and thin films

2Loss of information

If a transparent material is used for the second part, then vision feedback for device presence is provided, but the material strength may be reduced

Engineering Contradiction:

Improvevision feedbackVSAvoidmaterial strength

Core Design Contradiction:

Loss of informationVSStrength

Solution Approach 1:

The flexible material used for the second part inherently provides transparency or translucency, enabling users to visually confirm device presence without opening the container. This flexible transparent material maintains sufficient strength for the application while delivering continuous visual feedback about the stored device.

Inventive Principle:

Principle #30Flexible shells and thin films

3Stability of the object's composition

If a non-breathable material is used, then structural integrity is maintained, but device freshness is compromised

Engineering Contradiction:

Improvestructural integrityVSAvoiddevice freshness

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The flexible material incorporates a porous structure that allows air permeability and breathability. This enables gas exchange to maintain device freshness by preventing moisture and bacterial buildup, while the porous structure is designed to maintain sufficient structural integrity for the container's protective function.

Inventive Principle:

Principle #31Porous materials

4Ease of manufacture

If a magnetic hinge is used, then ease of assembly is improved, but manufacturing precision requirements increase

Engineering Contradiction:

Improveease of assemblyVSAvoidmagnetic alignment precision

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent replaces traditional mechanical hinge mechanisms with a magnetic hinge system. This substitution eliminates complex mechanical components and assembly steps, allowing for easier manufacturing and assembly. The magnetic attraction provides sufficient holding force while tolerating greater variations in positioning compared to precision mechanical hinges.

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

The solution results in a pocket-friendly charging container that provides tactile and vision feedback for device presence, maintains device freshness, and offers easy assembly and cleaning, enhancing user convenience and device longevity.

Implementation Method 1

the portion of the second part that is flexible provides a softness to the second part. For example, when the charging container is in a closed position a user may touch the softer portion of the second part to confirm to himself or herself whether the in-ear audio listening device(s) is/are present or not

Methodology Applied

Scientific EffectTactile feedback:

Implementation Method 2

the second part is attached to the first part to form a lid for enclosing an in-ear audio listening device

Methodology Applied

Scientific EffectMagnetic attraction: Magnetism

Data Source

PatentUS12470076B2Charging container for storing and charging an in-ear audio listening device

Publication Date: 2025.11.11 MARSHALL GRP AB

AI summary

This disclosure presents a charging container (100) configured to store and charge an in-ear audio listening device (200A; 200B). The charging container (100) comprises a first part (110) and a second part (120). The second part (120) is attached to the first part (110) to form a lid for enclosing an in-ear audio listening device (200A; 200B) when the second part (120) faces the first part (110). At least a portion (122) of the second part (120) is flexible, e.g., made of a flexible material.