Wireless Earbuds Charging Capsule Magnetic Connector
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Solution Overview
Problem
Current wireless earbuds face challenges in design efficiency, user convenience, and durability due to the need for reliable recharging and protection from wear and tear, while also requiring effective acoustic quality and noise reduction.
Innovation Solution
The design includes a spatially folded circuit board assembly with interleaved rechargeable batteries, dual microphones for noise reduction, and a storage and charging capsule with a magnetic connector interface and status indicator, allowing for secure charging and efficient battery management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If wireless earbuds use internal rechargeable batteries, then operational autonomy is improved, but reliability of recharging deteriorates
Solution Approach 1:
The earbuds are nested within a charging capsule that contains a power source. The capsule houses the earbuds in a dedicated chamber and provides charging through contact interfaces, creating a nested structure where the smaller earbuds are contained within the larger charging device.
Solution Approach 2:
The charging capsule acts as an intermediary device between the power source and the earbuds. It provides a reliable charging interface through magnetic connectors and contact pads, mediating the power transfer and ensuring consistent recharging without direct user intervention.
2Duration of action of moving object
If wireless earbuds require frequent recharging, then operational autonomy is reduced, but device complexity increases
Solution Approach 1:
The storage case and charging device are merged into a single integrated capsule. The capsule simultaneously provides protection, storage, and charging functions, eliminating the need for separate accessories and reducing overall system complexity.
Solution Approach 2:
The charging capsule serves multiple functions: it stores the earbuds when not in use, charges them through magnetic connectors, and provides a protective case. This multi-functional design reduces the number of separate devices needed.
3Manufacturing precision
If dual microphones are added for noise reduction, then acoustic quality is improved, but device complexity increases
Solution Approach 1:
Different microphones are positioned at specific locations within the earbud housing to capture different sound sources. The first microphone is positioned to pick up sound from the ear canal, while the second microphone captures external sound, creating localized sampling for noise reduction.
4Volume of moving object
If circuit board assembly is spatially folded to fit compact space, then volume is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The circuit board assembly is folded into a three-dimensional spatial configuration rather than a flat layout. Multiple circuit boards are stacked and interconnected in layers, utilizing the third dimension to reduce the overall footprint and fit compact components within the limited earbud volume.
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 configuration enhances the durability and convenience of wireless earbuds by ensuring reliable charging, efficient battery life indication, and improved noise reduction, while maintaining a compact and user-friendly design.
Implementation Method 1
a magnetic connector interface being provided in the earbud chamber of the elongate insert part, being connected to the power source and being adapted to engage with a respective at least one charge pad of each earbud so as to secure the earbud in the earbud chamber
Data Source
AI summary
A wireless earbud (100) for in-ear use has an earbud housing (110), a loudspeaker (130), a rechargeable battery (140), a first microphone (132) and a second microphone (134). The first microphone (132) is adapted to pick up sound internally from an ear canal of a user wearing the wireless earbud. The second microphone (134) is adapted to pick up sound externally from outside of the ear canal of the user wearing the wireless earbud. Disclosed is also a storage and charging capsule (200) for at least one wireless earbud (100a, 100b). The capsule has an elongate insert part (240) having an earbud chamber (246) adapted to receive the or each wireless earbud (100a, 100b). A cover part (260) slidably receives the elongate insert part (240) and is placeable in an open position in which the cover part is retracted from the elongate insert part to allow insertion/removal of the or each wireless earbud (100a, 100b) into/from the earbud chamber (246) of the elongate insert part (240). The cover part is also placeable in a closed position in which it encapsulates the elongate insert part. The storage and charging capsule (200) further has a power source (270), and a magnetic connector interface (257) in the earbud chamber (246) of the elongate insert part (240). The magnetic connector interface (257) is connected to the power source (270) and is adapted to engage with a respective at least one charge pad (101) of the earbud (100a, 100b) so as to secure the earbud (100a, 100b) in the earbud chamber and allow charging thereof by the power source (270).