Vibration Sound Device With Sandwiched Magnetic Assembly
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Solution Overview
Problem
Existing vibration sound devices for electronic products face challenges in achieving high sensitivity and good listening experiences due to the need for matching resonant frequencies between the exciter and the electronic product, resulting in low sensitivity and poor sound quality.
Innovation Solution
A vibration sound device comprising a magnetic assembly with a closed magnetic circuit formed by four magnets and a coil assembly, where the magnets are strategically positioned to generate an interaction force that reduces the overall height and enhances space utilization, improving sound quality and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a traditional exciter with simple structure is used, then manufacturing is easier and development is simpler, but sensitivity is low and listening experience is poor
Solution Approach 1:
The magnetic assembly is divided into four separate magnets (first, second, third, and fourth magnets) arranged in a specific configuration. This segmentation allows each magnet to be independently positioned and magnetized, enabling precise control of the magnetic field distribution to improve sensitivity while maintaining manufacturing simplicity.
Solution Approach 2:
Each magnet in the assembly has a specific magnetization direction tailored to its position - the first and second magnets have magnetization directions along their arrangement directions, while the third and fourth magnets have opposite magnetization directions. This local quality optimization creates an enhanced magnetic field interaction with the coil assembly, improving sensitivity without complicating the overall structure.
2Device complexity
If the resonant frequency of the exciter is matched with the electronic product, then the structure is simpler, but sensitivity is low and listening experience is poor
Solution Approach 1:
The patent enables dynamic adjustment of resonant frequency by modifying the magnetic field strength through the coil assembly's current. The four-magnet configuration allows the system to achieve optimal resonance at different frequencies by adjusting the electrical input to the coil, providing dynamic adaptability while keeping the mechanical structure simple.
Solution Approach 2:
The resonant frequency parameter can be changed by adjusting the electrical characteristics of the coil assembly or the magnetic properties of the magnets. This allows the system to adapt to different electronic products without changing the physical structure, thereby improving sensitivity while maintaining structural simplicity.
3Force
If magnets are positioned closer to the coil assembly, then magnetic interaction is stronger, but space utilization is reduced
Solution Approach 1:
The four magnets are positioned asymmetrically relative to the coil assembly, with the first and second magnets on one side and the third and fourth magnets on the other side. This asymmetric arrangement creates an optimized magnetic field distribution that maximizes interaction force while maintaining a compact overall structure, effectively balancing force and space utilization.
Solution Approach 2:
The magnetic assembly extends in multiple dimensions around the coil assembly rather than simply approaching it from one direction. The four magnets are distributed in a spatial configuration that utilizes three-dimensional space efficiently, achieving strong magnetic interaction without increasing the overall footprint or height of the device.
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 device effectively drives vibrations in electronic products, enhancing sound quality and space utilization by leveraging a sandwiched magnetic and coil structure that optimizes magnetic interaction and reduces the overall height, leading to improved listening experiences.
Implementation Method 1
an interaction force is generated between the magnetic assembly in the first housing and the coil assembly on the second housing to drive the vibration sound device to vibrate and sound
Implementation Method 2
the first magnet, the second magnet, the third magnet and the fourth magnet constitute a closed magnetic circuit
Data Source
AI summary
Disclosed are a vibration sound device for an electronic product and the electronic product. The vibration sound device comprises a first housing, a magnetic assembly, a coil assembly and a second housing. The first housing includes a cavity and is opened at one side thereof. An interaction force is generated between the magnetic assembly in the first housing and the coil assembly on the second housing to drive the vibration sound device to vibrate so as to generate a sound. According to the present disclosure, the magnetic assembly and the coil assembly are configured in a sandwiched structure, so that the overall height of the vibration sound device is reduced, and thus space utilization of the electronic device is improved.