Integrated Magnetic Assembly for Stronger Sound and Vibration
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Solution Overview
Problem
Existing multifunctional sound generating devices suffer from insufficient driving force and weak vibration sensation due to separate magnetic circuit structures, leading to degraded performance.
Innovation Solution
A multifunctional sound generating device with an integrated magnetic circuit system and magnet assembly, featuring an annular main magnet with fixed magnet assemblies and a driving coil positioned inside the housing, allowing the vibration unit to vibrate perpendicular to the diaphragm direction, enhancing mass and driving force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the magnetic circuit system and magnet assembly are designed into two separate magnetic circuit structures, then the overall mass of the vibration unit is reduced, but the driving force of the vibration unit becomes insufficient
Solution Approach 1:
The patent merges the magnetic circuit system and magnet assembly into an integrated structure where the magnet assembly is positioned within the magnetic circuit system. The magnet assembly includes a vibration magnet and driving magnet, while the magnetic circuit system provides magnetic poles that work together to generate both sound output and vibration force, eliminating the need for separate magnetic structures.
2Weight of moving object
If the magnetic circuit system and magnet assembly are designed into two separate magnetic circuit structures, then the overall mass of the vibration unit is reduced, but the vibration sense becomes weak
Solution Approach 1:
The patent combines the magnetic circuit system and magnet assembly into a unified structure where the driving coil interacts with both the driving magnet and magnetic poles simultaneously. This integrated design ensures that the electromagnetic force generated by the driving coil is efficiently transmitted to produce strong vibration sensation while maintaining compact mass.
3Weight of moving object
If the magnetic circuit system and magnet assembly are designed into two separate magnetic circuit structures, then the overall mass of the vibration unit is reduced, but the performance is degraded
Solution Approach 1:
The patent integrates the magnetic circuit system and magnet assembly into a single coordinated structure where the voice coil and driving coil work together with the unified magnetic field. This merger enables simultaneous optimization of sound output quality and vibration performance, achieving high-fidelity audio reproduction with enhanced bass response and vibration feedback.
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 integrated design improves the BL value and vibration sensation, resulting in improved performance and clearer sound output while reducing costs.
Implementation Method 1
a driving coil configured to drive the vibration unit to vibrate
Implementation Method 2
a voice coil configured to drive the diaphragm to vibrate and output the sound
Implementation Method 3
The magnetic circuit system includes a lower engaging plate, an annular main magnet fixed to the lower engaging plate, and at least one secondary magnet fixed to the lower engaging plate and located on an outer side of the main magnet
Data Source
AI summary
A multifunctional sound generating device is provided and includes a housing, a vibration unit received in the housing, and a driving coil configured to drive the vibration unit to vibrate. The vibration unit includes a sound generating unit and at least one magnet assembly fixed to the sound generating unit. The sound generating unit includes a basin frame, and a vibration system and a magnetic circuit system respectively fixed on the basin frame. In the multifunctional sound generating device of the disclosure, the magnetic circuit system and the magnet assembly are integrated with each other to improve the overall mass and driving force of the vibration unit, thereby improving the BL value and the vibration sense of the multifunctional sound generating device and improving the performance thereof.