Wearable Charging Layout With Ring PCB and Wider Magnetic Contacts
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Solution Overview
Problem
Conventional wearable devices face limitations in magnetic contact size due to battery placement, resulting in weakened magnetic attraction forces during charging.
Innovation Solution
The wearable device design includes a main circuit board with outwardly arched sections and recessed notches and reserving spaces to accommodate magnetic components and a battery, allowing adjustable magnetic contact widths to enhance magnetic attraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If magnetic contacts are disposed adjacent to the battery notch, then the battery can be accommodated, but the magnetic contact size is limited and magnetic attraction force is weakened
Solution Approach 1:
The patent extends magnetic contacts along the circumferential direction of the ring-shaped housing, utilizing the circular geometry to increase contact area without expanding radial space. This dimensional approach allows larger magnetic contacts to be accommodated within the limited cross-sectional area near the battery notch, thereby enhancing magnetic attraction force while maintaining compact form factor.
Solution Approach 2:
The magnetic charging system is divided into multiple magnetic contacts distributed around the ring-shaped housing. By segmenting the magnetic interaction into multiple contact points rather than a single large contact, the design achieves cumulative magnetic attraction force while accommodating each individual contact within available space constraints imposed by the battery placement.
2Reliability
If larger magnetic contacts are used to enhance magnetic attraction force, then charging reliability improves, but more assembly space is required which conflicts with compact device design
Solution Approach 1:
The magnetic contacts are nested within the ring-shaped housing structure, utilizing the hollow circular space efficiently. The battery is positioned in the central region while magnetic contacts are arranged in the annular region, creating a nested spatial configuration that maximizes the use of available internal volume without requiring additional device size.
Solution Approach 2:
The design transitions from considering only radial space to utilizing the circumferential dimension of the ring structure. By arranging magnetic contacts along the circular path, the system achieves larger effective magnetic contact area without increasing the cross-sectional area or overall device volume, thereby maintaining compact form factor while improving charging reliability.
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 easy adjustment of magnetic strength by selecting magnetic components with varying widths, ensuring robust magnetic charging compatibility.
Implementation Method 1
When the conventional wearable device is to be charged, the user may make a magnetic charger 50′ attracted to the inner surface of the conventional wearable device to charge the conventional wearable device
Data Source
AI summary
A wearable device includes a housing, a main circuit board, two magnetic components and a battery. An inside of the housing has a ring-shaped accommodating space. The main circuit board is mounted in the accommodating space. The main circuit board includes a level section, a first curving section, a second curving section and two electrode contacts. A rear edge of a free side of the first curving section is recessed inward to form a notch. A rear edge of the first curving section is recessed inward to form a first reserving space. A rear edge of the second curving section is recessed inward to form a second reserving space. The two magnetic components are mounted in the accommodating space. The battery is accommodated in the accommodating space. The battery is received in the notch.