Earpiece Magnetic Field Alignment for Energy Efficiency
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Solution Overview
Problem
Conventional earpieces experience reduced magnetic energy efficiency due to the net magnetic force being in a different direction than the moving direction of the extending portion, leading to suboptimal sound generation.
Innovation Solution
The earpiece design incorporates a magnetic field system with a permanent magnet generating a first magnetic field and a coil generating a second magnetic field, both aligned parallel to each other within the frame, producing a net magnetic force that causes the vibration system to move, enhancing sound generation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the coil generates a magnetic field perpendicular to the permanent magnet's field, then the extending portion can rotate about the arc portion, but the net magnetic force is in a different direction than the moving direction, reducing magnetic energy efficiency
Solution Approach 1:
The patent changes the spatial relationship between the coil and permanent magnet from a perpendicular configuration to a parallel configuration. The coil is positioned such that its magnetic field axis is parallel to the permanent magnet's field axis, allowing the net magnetic force to act in the same direction as the moving direction of the extending portion, thereby improving magnetic energy efficiency while maintaining the rotational movement capability
Solution Approach 2:
The patent modifies the geometric parameters of the magnetic field system by adjusting the orientation angle between the coil and permanent magnet from 90 degrees to parallel alignment. This parameter change ensures that the magnetic force vector aligns with the displacement vector of the extending portion, maximizing energy transfer efficiency
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 ensures that the net magnetic force is in the same direction as the movement of the moving element, resulting in improved vibration and sound production, increasing the magnetic energy efficiency and sound quality.
Implementation Method 1
The magnetic field system includes a magnet to generate a first magnetic field on a first axis and a coil to generate a second magnetic field on a second axis
Implementation Method 2
The first and the second magnetic fields produce a net magnetic force to cause the vibration system to move
Implementation Method 3
The first axis is parallel to the second axis... the net magnetic force is in the same direction as the movement of the moving element
Data Source
AI summary
An earpiece for communications comprises a frame, a vibration system disposed in the frame and a magnetic field system disposed in the frame. The vibration system includes a vibrating armature, a diaphragm and a connecting rod. The magnetic field system includes a magnet to generate a first magnetic field on a first axis and a coil to generate a second magnetic field on a second axis. One of the magnet and the coil is connected to the frame. The first and the second magnetic fields produce a net magnetic force to cause the vibration system to move. The first axis is parallel to the second axis.