Speaker Airflow-Area Demagnetization for Consistent Diaphragm Vibration
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Solution Overview
Problem
The inconsistency in vibration amplitude of the voice coil and diaphragm due to varying airflow conditions affects the acoustic performance of conventional speakers.
Innovation Solution
The speaker design incorporates demagnetization configurations in the airflow area of the magnetic and magnetic conductive components to balance the vibration amplitude by reducing magnetic flux, using features like through holes and notches in the magnetic and magnetic conductive members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the airflow space where the diaphragm vibrates is connected to the space of other cavities, then the housing structure is simplified, but the vibration amplitude of the voice coil and diaphragm becomes inconsistent, affecting acoustic performance
Solution Approach 1:
The patent applies local quality by introducing demagnetization components (first and second demagnetization components) at specific locations within the magnetic component and magnetic conductive component respectively. These components are strategically positioned in the airflow area to locally adjust magnetic flux distribution, thereby balancing the vibration amplitude of the voice coil and diaphragm while maintaining the simplified housing structure with connected cavities.
2Manufacturing precision
If demagnetization components are added to balance vibration amplitude, then acoustic performance is improved, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the magnetic flux parameter through the introduction of demagnetization components. The first demagnetization component in the magnetic component and the second demagnetization component in the magnetic conductive component work together to adjust and balance the magnetic flux distribution, thereby achieving consistent vibration amplitude across the voice coil and diaphragm while minimizing the increase in device complexity.
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 balancing of vibration amplitude leads to improved acoustic performance by ensuring consistent thrust and vibration across different areas, enhancing sound quality.
Implementation Method 1
alternated electric current passes through the voice coil to generate a corresponding magnetic field change
Implementation Method 2
an energized conductor is subjected to a force in the magnetic field
Implementation Method 3
The magnetic component is disposed on the carrying board. The magnetic conductive component is disposed at the magnetic component
Implementation Method 4
the magnetic component disposed in the airflow area comprises a first demagnetization configuration or/and the magnetic conductive component disposed in the airflow area comprises a second demagnetization component
Data Source
AI summary
The present disclosure provides a speaker, comprising a housing, a carrying board, a magnetic component, a magnetic conductive component, a voice coil, and a diaphragm component. The housing comprises an accommodating space and a rear cavity space communicated with the accommodating space. An area in the accommodating space communicating with the rear cavity space is an airflow area. The carrying board is disposed in the accommodating space. The magnetic component is disposed on the carrying board. The magnetic conductive component is disposed at the magnetic component. The voice coil is disposed in the magnetic component and the magnetic conductive component. The diaphragm component is disposed in the accommodating space, and is connected to the voice coil. Wherein, the magnetic component disposed in the airflow area comprises a first demagnetization configuration or/and the magnetic conductive component disposed in the airflow area comprises a second demagnetization component.