Coaxial Speaker Shared Magnetic Circuit Integration
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Solution Overview
Problem
Conventional coaxial speakers have a complex structure with separate high-frequency and low-frequency magnetic circuits, leading to increased height, production costs, and limited vibration diaphragm area, which hinders space utilization and market competitiveness.
Innovation Solution
A coaxial speaker design featuring a shared magnetic circuit system with ring-shaped magnetic conduction plates and magnet assemblies, where the first and second voice coils are inserted into magnetic gaps, allowing for efficient space utilization and reduced overall height, with a support component and diaphragm configuration for enhanced sound wave propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate high-frequency and low-frequency magnetic circuit systems are used, then each speaker unit has independent vibration and magnetic systems, but the structure becomes complex and overall height increases
Solution Approach 1:
The patent merges the high-frequency and low-frequency magnetic circuit systems into a shared magnetic circuit structure. The magnetic circuit includes a yoke, pole pieces, and magnetic conduction plates that serve both speaker units simultaneously. This integration reduces structural complexity and overall height while maintaining independent vibration systems for each frequency range.
Solution Approach 2:
The magnetic circuit components are designed to perform multiple functions: the yoke and pole pieces provide magnetic flux paths for both high-frequency and low-frequency speakers, while the magnetic conduction plates enhance magnetic field distribution for both units. This multi-functional design eliminates the need for separate magnetic circuits.
2Reliability
If separate high-frequency and low-frequency magnetic circuit systems are used, then each speaker unit has independent vibration and magnetic systems, but production cost increases
Solution Approach 1:
By combining the magnetic circuit systems into a single integrated structure with shared components (yoke, pole pieces, magnetic conduction plates), the patent reduces the total number of parts that need to be manufactured and assembled. This integration directly lowers production costs while preserving the functional independence of each speaker unit through separate voice coil assemblies.
3Volume of moving object
If the vibration diaphragm area is limited away from the sound outlet surface, then the speaker unit structure is compact, but full sound range requirements cannot be met
Solution Approach 1:
The patent utilizes the vertical dimension by stacking the high-frequency and low-frequency speaker units in a coaxial arrangement. This allows both speaker units to operate simultaneously with adequate diaphragm areas for their respective frequency ranges, while maintaining a compact overall footprint. The magnetic conduction plates extend the magnetic field distribution to support larger effective diaphragm areas without increasing horizontal space requirements.
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 design improves space utilization, reduces production costs, and achieves full-frequency sound range by integrating the magnetic circuit and vibration systems, enhancing the speaker's applicability and market competitiveness.
Implementation Method 1
a first voice coil fixed on the first diaphragm and at least partially inserted into the first magnetic gap... and a second voice coil fixed to the second diaphragm and at least partially inserted into the second magnetic gap
Data Source
AI summary
The present invention provides a coaxial speaker, which includes a frame, a vibration system and a magnetic circuit system. The magnetic circuit system includes a magnetic conduction assembly and a magnet assembly. The magnetic conduction assembly includes a first magnetic conduction plate, an inner side wall and an outer side wall, and a second magnetic conduction plate fixed on the side of the inner side wall. The magnet assembly includes a first magnet that forms a first magnetic gap and a second magnet that forms a second magnetic gap, a first vibration assembly and a second vibration assembly. The present invention is provided with high internal space integration, high magnetic circuit utilization, and meets the requirements of the full frequency domain.