Speaker Magnetic Circuit Segmentation for Miniaturization
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Solution Overview
Problem
Conventional speakers in portable electronic devices are large due to low magnetic efficiency, which hinders their miniaturization and performance.
Innovation Solution
A speaker design featuring a magnetic circuit system with multiple magnetic circuit devices and a vibration system driven by a voice coil assembly, where the magnetic circuit devices are connected through a yoke and a magnetic gap, and an elastic diaphragm assembly is used to enhance vibration stability and sound quality, along with a rectangular dome and suspension ring for improved vibration mode and balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a conventional speaker design is used, then the speaker can be manufactured with simple structure, but the speaker size becomes large due to low magnetic efficiency
Solution Approach 1:
The magnetic circuit is divided into multiple magnetic circuit devices connected in series, with each device containing a magnetic assembly and yoke structure. This segmentation allows the magnetic field to be distributed across multiple units, improving overall magnetic efficiency while enabling miniaturization of the entire speaker system.
Solution Approach 2:
The magnetic assembly is received within the yoke structure, creating a nested configuration where the magnetic components are contained within the structural framework. This nesting optimizes space utilization and improves magnetic field concentration, leading to higher magnetic efficiency in a compact design.
2Loss of energy
If multiple magnetic circuit devices are connected through yoke and magnetic gap, then magnetic field efficiency is improved, but device complexity increases
Solution Approach 1:
Multiple magnetic circuit devices are connected through a common yoke structure that serves as both the structural framework and the magnetic circuit path. This merging of structural and magnetic functions reduces the need for separate components, improving magnetic efficiency while controlling overall structural complexity.
Solution Approach 2:
The yoke structure serves multiple functions: it provides mechanical support, forms the magnetic circuit path, and connects the magnetic assemblies. This multi-functionality reduces the number of separate components needed, thereby improving magnetic efficiency without proportionally increasing device complexity.
3Reliability
If elastic diaphragm assembly is used to support the diaphragm, then vibration stability and sound quality are improved, but device complexity increases
Solution Approach 1:
The elastic diaphragm assembly acts as an intermediary between the voice coil and the diaphragm, providing elastic support that stabilizes vibration and improves sound quality. This intermediary structure filters out unwanted vibrations and maintains the diaphragm's vibration characteristics, enhancing overall system reliability.
Solution Approach 2:
The elastic diaphragm assembly uses flexible elastic materials to support the diaphragm, allowing it to vibrate freely while maintaining stability. The flexible nature of the elastic components enables them to accommodate vibration movements without causing distortion, improving sound quality while adding minimal structural 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
The design achieves higher magnetic field efficiency, miniaturization, and improved sound quality with better high-frequency performance and structural stability, suitable for applications in portable devices like mobile phones and car speakers.
Implementation Method 1
a plurality of voice coil assembly inserted into the magnetic gap drive the diaphragm vibrate jointly
Implementation Method 2
a magnetic circuit system fixed to the frame, comprises a plurality of magnetic circuit devices connected to each with a magnetic gap
Data Source
AI summary
A speaker including a frame; a magnetic circuit system fixed to the frame, comprises a plurality of magnetic circuit devices connected to each with a magnetic gap; a vibration system driven by the magnetic to vibrator, comprises a diaphragm fixed to the frame and a plurality of voice coil assembly inserted into the magnetic gap drive the diaphragm vibrate jointly. the speaker can drive the diaphragm to vibrate and produce sound with a greater driving force, and the magnetic circuit system has a higher magnetic field. The efficiency makes the speaker have a better sound effect.