Magnetic Contact Assembly for Low-Resistance Eyewear Charging
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Solution Overview
Problem
Consumer electronics devices face challenges in achieving low electrical resistance between conductive contacts due to the substrate material, plating material, and contact force, which affects charging and data communication efficiency.
Innovation Solution
The use of magnetic contacts, specifically repelling or attracting magnets, to provide a resilient engagement force between conductive surfaces, reducing electrical resistance by utilizing Neodymium disc magnets and conductive materials like nickel, copper, or gold, and incorporating non-conductive housings to ensure effective contact and connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrical contacts are used with substrate material and plating material, then electrical connection is established, but electrical resistance is present between contacts
Solution Approach 1:
The patent replaces conventional mechanical pressure-based contact systems with a magnetic field-based contact system. Magnets are embedded in the contact surfaces to generate magnetic attraction forces that pull conductive elements into intimate contact, substituting mechanical compression with magnetic force for achieving low-resistance electrical connection
Solution Approach 2:
The patent changes the physical parameters of the contact interface by introducing magnetic field strength as a new controlling parameter. By adjusting magnet strength, polarity arrangement, and magnetic field distribution, the contact pressure and contact area are dynamically optimized to minimize electrical resistance while maintaining reliable connection
2Reliability
If contact force between contacts is increased to reduce resistance, then electrical connection improves, but device complexity increases
Solution Approach 1:
The patent merges the functions of contact pressure generation and electrical conduction into a single integrated magnetic contact assembly. The magnets are embedded directly within the contact structure, combining the mechanical function of pressure application with the electrical function of current conduction, thereby reducing overall device complexity
Solution Approach 2:
The magnetic contact system is self-regulating, where the magnetic attraction force automatically adjusts the contact pressure based on the interaction between opposing magnetic elements. This self-adjusting mechanism eliminates the need for external pressure control systems, springs, or complex actuation mechanisms, reducing device complexity while maintaining optimal electrical connection
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 magnetic contact system effectively reduces electrical resistance and enhances the efficiency of charging and data transfer by providing a consistent and reliable connection force, improving the performance of consumer electronics devices.
Implementation Method 1
Magnetic force electrical contacts include first and second magnets positioned to repel or attract one another with a magnetic force that produces a resilient electrical contact between the first and second electrical contact surfaces
Data Source
AI summary
An electronic assembly including eyewear and/or an eyewear case having a support structure and a conductive contact surface supported by the support structure. The eyewear case includes electronic components, an electrical contact surface adapted to engage the conductive contact surface of the eyewear, a first magnet attached to the electrical contact surface, and a second magnet that is positioned to attract or repel the first magnet.