Speaker Device With Series Voice Coils in Shared Magnetic Gap
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Solution Overview
Problem
Conventional speaker devices have limitations in terms of acoustic characteristics and component efficiency, particularly in the arrangement and connection of magnetic circuits and voice coil bodies.
Innovation Solution
A speaker device design featuring two magnetic circuits with magnetic gaps, voice coil bodies connected in series, and a diaphragm with specific dimensions and shape, where the voice coil bodies are coupled to the diaphragm and attached to a frame, facilitating improved acoustic characteristics and simplified wiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple speaker units are arranged in the longitudinal direction of the diaphragm, then the acoustic characteristics can be improved, but the device complexity and wiring complexity increase
Solution Approach 1:
The patent combines multiple voice coil bodies (first and second voice coil bodies) into a single integrated magnetic circuit structure. The voice coils are connected in series within the same magnetic circuit, eliminating the need for separate magnetic circuits and reducing wiring complexity while maintaining improved acoustic characteristics through the combined operation of multiple voice coil bodies.
2Reliability
If multiple magnetic circuits are used to accommodate multiple voice coil bodies, then acoustic performance can be enhanced, but the device occupies more space and becomes thicker
Solution Approach 1:
The patent merges multiple voice coil bodies into a single magnetic circuit rather than using separate magnetic circuits for each voice coil body. This integration allows multiple voice coil bodies to share the same magnetic circuit space, reducing the overall device thickness while maintaining enhanced acoustic performance through the combined operation of multiple voice coil bodies connected in series.
3Reliability
If voice coil bodies are arranged side by side in separate magnetic circuits, then acoustic characteristics improve, but the component variability and manufacturing complexity increase
Solution Approach 1:
The patent combines multiple voice coil bodies into a single magnetic circuit structure, reducing the number of separate components that need to be manufactured and assembled. This integration reduces component variability and manufacturing complexity while maintaining improved acoustic characteristics through the coordinated operation of multiple voice coil bodies within the unified magnetic circuit.
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 design enhances acoustic performance and reduces the complexity of wiring, allowing for a thinner, more efficient speaker device with improved sound quality and reduced component variability.
Implementation Method 1
two magnetic circuits arranged side by side and each including a magnetic gap; two voice coil bodies each corresponding to a shape of the magnetic gap and arranged in the magnetic gap in an inserted state
Data Source
AI summary
A speaker device that includes: two magnetic circuits arranged side by side and each including a magnetic gap; two voice coil bodies each corresponding to a shape of the magnetic gap and arranged in the magnetic gap in an inserted state; a diaphragm to which the two voice coil bodies are coupled, the diaphragm having a width shorter than a length in a direction in which the two magnetic circuits are arranged; and a frame to which the diaphragm and the two magnetic circuits are attached. In the speaker device, the two voice coil bodies include two coils connected in series, the two coils being connected to a pair of input terminals for receiving an input of an electric signal, the pair of input terminals being disposed between the two voice coil bodies.