Earphone Charging Box Multipole Magnet Layout for Oblique Positioning

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Solution Overview

Problem

Conventional earphone boxes suffer from low internal space utilization, large volume, and inconvenient carrying due to inefficient positioning and charging stability, particularly under the influence of gravity.

Innovation Solution

The earphone box incorporates a multipole magnet on the box body and an earphone magnet with matching poles, allowing for multi-point positioning and attraction, enabling the earphone to be placed obliquely, thus improving stability and reducing volume by optimizing space usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the earphone is placed vertically in the earphone box to ensure charging stability, then the charging reliability is improved, but the volume of the earphone box increases and carrying convenience deteriorates

Engineering Contradiction:
Improvecharging stabilityVSAvoidearphone box volume
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The patent introduces an inclined accommodating groove that deviates from the conventional vertical placement. The groove is inclined at an angle of 15-45 degrees relative to the vertical direction, creating an asymmetric placement structure. This asymmetric design allows the earphone to be held at an oblique angle, reducing the vertical height requirement while maintaining charging contact through the inclined interface structure, thus resolving the contradiction between charging stability and compact volume.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The patent transitions from a single-dimensional vertical placement to a multi-dimensional oblique placement structure. By introducing the inclined groove angle, the earphone positioning moves from a straightforward vertical orientation to a three-dimensional oblique orientation. This dimensional change allows the charging interface to maintain contact while reducing the overall box volume, as the earphone utilizes diagonal space rather than purely vertical space.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Volume of moving object

If the earphone box is designed with a compact shape to improve portability, then the volume is reduced, but the internal space utilization becomes inefficient and positioning accuracy deteriorates

Engineering Contradiction:
Improveearphone box volumeVSAvoidpositioning accuracy
Core Design Contradiction:
Volume of moving objectVSManufacturing precision

Solution Approach 1:

The patent incorporates a magnet assembly that exerts preliminary magnetic attraction force on the earphone before physical contact is fully established. This preliminary magnetic action pre-positions the earphone in the correct location within the inclined groove, ensuring accurate alignment of the charging interface. The magnetic force acts in advance to guide the earphone into its proper oblique position, maintaining positioning accuracy despite the compact box design.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The magnet assembly serves as an intermediary between the box body and the earphone. Instead of relying solely on mechanical constraints for positioning, the magnetic field acts as a mediator to attract and hold the earphone (which contains a corresponding magnet) in the correct oblique position within the inclined groove. This intermediary magnetic interaction ensures precise positioning while allowing for the compact box geometry.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 charging stability, reduces the earphone box volume, and improves portability by allowing oblique placement, which addresses the issues of low space utilization and inconvenient carrying in conventional designs.

Implementation Method 1

The earphone box incorporates a multipole magnet on the box body and an earphone magnet with matching poles, allowing for multi-point positioning and attraction

Methodology Applied
Scientific EffectMagnetic attraction: Magnetism

Data Source

PatentEP4145850B1Earphone box and earphone
Publication Date: 2024.12.04 BEIJING XIAOMI MOBILE SOFTWARE CO LTD
  • EP4145850B1 patent drawingFigure 1
  • EP4145850B1 patent drawingFigure 2
  • EP4145850B1 patent drawingFigure 3

AI summary

An earphone box (1000) and an earphone (300) are described. The earphone box (1000) includes a box body (1001) and a box magnet (200). The box body (1001) defines an accommodating groove (100) configured to accommodate the earphone (300), and the accommodating groove (100) is provided with an interface (130) configured to be electrically coupled to the earphone (300). The box magnet (200) is mounted on the box body (1001) and configured as a multipole magnet, and the box magnet (200) attracts and couples with an earphone magnet (310) of the earphone (300) which has the same number of poles as the box magnet (200).