Sound Generator With Segmented Magnetic Circuit
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Solution Overview
Problem
Existing sound generators with magnetic circuit systems have low efficiency, resulting in poor sound generation effects due to inadequate magnetic field distribution, which affects the loudness of sound produced by the vibration systems.
Innovation Solution
A sound generator design incorporating a magnetic circuit system with three sequentially spaced and oppositely disposed magnets, where the first and second magnets provide magnetic fields for the first voice coil, and the second and third magnets provide magnetic fields for the second voice coil, enhancing magnetic circuit efficiency and increasing vibration amplitudes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a magnetic circuit system with two magnets is used to drive two vibration systems, then the device can generate sound from both sides, but the magnetic circuit efficiency is low resulting in poor sound generation effects
Solution Approach 1:
The magnetic circuit system is segmented into three distinct magnets (first magnet, second magnet, third magnet) arranged sequentially. Each magnet is independently positioned to provide magnetic fields to specific voice coils, allowing optimized magnetic circuit efficiency while maintaining double-sided sound generation capability. The segmentation enables better control over magnetic field distribution compared to a two-magnet system.
Solution Approach 2:
The patent introduces a third dimension in the magnetic circuit arrangement by adding another magnet along the existing sequence. This dimensional expansion from two to three magnets creates additional magnetic field sources that can simultaneously drive both vibration systems, improving overall magnetic circuit efficiency without compromising the double-sided sound generation function.
2Power
If the magnetic circuit efficiency is improved by adding more magnets, then the vibration amplitudes increase, but the device complexity increases
Solution Approach 1:
The second magnet serves multiple functions: it provides magnetic fields to both the first voice coil and the second voice coil simultaneously. This multi-functionality allows the system to achieve higher vibration amplitudes with only one additional magnet rather than requiring separate magnets for each voice coil, thereby limiting the increase in device complexity while still improving power output.
Solution Approach 2:
The magnetic circuit system merges the functions of multiple magnets into a coordinated arrangement where the first, second, and third magnets work together to drive both vibration systems. By combining their magnetic fields in a unified circuit, the system achieves enhanced vibration amplitudes without proportionally increasing complexity, as the magnets are integrated into a single cohesive structure.
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 improved magnetic circuit efficiency leads to increased vibration amplitudes of the voice coils, resulting in enhanced loudness of sound generated by the sound generator.
Implementation Method 1
the magnetic circuit system comprises a first magnet, a second magnet, and a third magnet that are sequentially spaced and oppositely disposed in the second direction
Implementation Method 2
the first voice coil is sleeved on outer sides of the first magnet and the second magnet simultaneously, and the second voice coil is sleeved on outer sides of the second magnet and the third magnet simultaneously
Implementation Method 3
the magnetic circuit system is used for driving the first vibration system to generate sound in a first direction from the second opening toward the first opening and driving the second vibration system to generate sound in a second direction opposite to the first direction
Data Source
AI summary
Disclosed is a sound generator, including a bracket, a magnetic circuit system, a first vibration system, and a second vibration system. The bracket has a first opening and a second opening that face opposite directions. The magnetic circuit system is used for driving the first vibration system and the second vibration system to generate sound in different directions. The first vibration system includes a first voice coil, the second vibration system includes a second voice coil, and the magnetic circuit system includes a first magnet, a second magnet, and a third magnet. The first voice coil is sleeved on outer sides of the first magnet and the second magnet simultaneously, and the second voice coil is sleeved on outer sides of the second magnet and the third magnet simultaneously. In the present invention, the loudness of sound generated by the sound generator may be improved.