Longitudinal Earbud Component Arrangement and Charging
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Solution Overview
Problem
Current wireless earbuds face challenges in optimizing battery life management, acoustic quality, and convenience, particularly in switching between idle and operational modes, and in efficient storage and charging solutions.
Innovation Solution
The design includes a wireless earbud with a rechargeable battery, printed circuit board for wireless communication and audio control, and a storage and charging capsule with a retractable cover and pogo pins for efficient charging, along with a controller that automatically switches between idle and operational modes based on battery status, determining device roles for power preservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless earbuds remain in operational mode continuously, then audio playback functionality is maintained, but battery consumption increases
Solution Approach 1:
The earbud system dynamically switches between operational mode (for audio playback) and idle mode (for power conservation) based on usage conditions. The controller automatically transitions the earbuds to idle mode when connected to a charger and when no audio host device is detected, thereby reducing battery consumption while maintaining functionality when needed.
2Use of energy by moving object
If automatic role switching between master and slave devices is implemented, then power distribution is optimized, but device complexity increases
Solution Approach 1:
The earbud system performs automatic role assessment and switching without user intervention. The controller autonomously evaluates battery charge statuses of paired earbuds and automatically switches master/slave roles to optimize power distribution, thereby improving energy efficiency while minimizing the perceived complexity for the user.
3Ease of operation
If charging interface is integrated into the storage capsule, then charging convenience is improved, but capsule complexity increases
Solution Approach 1:
The storage capsule integrates multiple functions including storage, charging, and protective housing into a single unified structure. The charging interface is incorporated into the capsule body, allowing automatic charging when earbuds are placed inside, thereby improving charging convenience while consolidating components rather than adding separate charging devices.
4Manufacturing precision
If successive arrangement of components along longitudinal axis is used, then manufacturing precision is improved, but acoustic quality may be compromised
Solution Approach 1:
The loudspeaker element is oriented with its acoustic axis aligned along the longitudinal main axis of the earbud housing, matching the successive arrangement of components. This dimensional alignment optimizes both manufacturing precision through standardized component placement and acoustic quality by ensuring proper sound direction toward the ear canal.
Data Source
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AI summary
A wireless earbud (10) has an earbud housing (12, 16) having a longitudinal main axis (19) and an essentially circular cross section, a loudspeaker element (13), a rechargeable battery (14), at least one main printed circuit board (15) having disposed thereon circuitry for wireless radio communication (110), audio codec (112) and earbud operation control (114), and a charging interface member (17). The loudspeaker element, the rechargeable battery, the main printed circuit board and the charging interface member are arranged in a successive order along the longitudinal main axis of the earbud housing.