Nested Vibration Sound Device for Electronic Products
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Solution Overview
Problem
Existing vibration sound devices for electronic products with full-screen designs face challenges in achieving high sensitivity and good listening experiences due to the need for resonant frequency matching between the exciter and the electronic product, resulting in low sensitivity and poor sound quality.
Innovation Solution
A vibration sound device featuring a magnetic assembly with a sandwiched configuration of magnets and a coil assembly, where the magnetic assemblies are positioned on opposite sides of a housing with a movable second housing, allowing for improved space utilization and assembly precision, and enabling effective magnetic interaction to drive sound production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a traditional exciter with basin frame, magnet and coil is used, then the structure is simple and production is easy, but the resonant frequency consistency between exciter and electronic product is poor resulting in low sensitivity
Solution Approach 1:
The magnetic assembly is divided into multiple independent magnets (first magnet, second magnet, third magnet, fourth magnet) arranged in specific patterns. This segmentation allows each magnet to be independently positioned and adjusted, enabling precise control of the magnetic field distribution and resonant frequency characteristics while maintaining simple production processes.
Solution Approach 2:
Different magnets are positioned at specific locations within the housing to create localized magnetic field zones. The magnetic assemblies are arranged with specific magnetization directions to optimize the magnetic interaction with the coil assembly at different positions, achieving consistent resonant frequency across the entire exciter structure.
2Ease of manufacture
If the exciter structure is simplified for easy production, then manufacturing is easier, but the resonant frequency matching with electronic product deteriorates
Solution Approach 1:
The magnetic assembly uses an asymmetric arrangement of magnets with different magnetization directions. The first and second magnets have one magnetization direction while the third and fourth magnets have another, creating an optimized magnetic field pattern that achieves reliable resonant frequency matching while maintaining simple production.
3Power
If magnets are arranged to form closed magnetic circuit, then magnetic interaction efficiency is improved, but device complexity increases
Solution Approach 1:
Multiple magnets are combined to form integrated magnetic assemblies that create closed magnetic circuits. The first magnetic assembly combines the first and second magnets, while the second magnetic assembly combines the third and fourth magnets. This merging approach achieves efficient magnetic interaction through closed flux paths while keeping the overall structure manageable and not excessively complex.
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 solution reduces the overall height of the vibration sound device, enhances space utilization, and improves assembly precision, resulting in better sound quality and increased sensitivity by optimizing the magnetic interaction between the magnetic and coil assemblies.
Implementation Method 1
a magnetic assembly and a coil assembly, the magnetic assembly comprises a first magnetic assembly and a second magnetic assembly... the coil assembly is connected with the second housing and positioned in the first channel
Implementation Method 2
the second housing further includes a plurality of elastic pieces, and the plurality of the elastic pieces are positioned corresponding to the magnetic assembly and bonded to the magnetic assembly
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 and sound. According to the present disclosure, the magnetic assembly and the coil assembly are configured into a nested form, so that the overall height of the vibration sound device is reduced, the space utilization rate and the assembly precision are improved, and enough utilization space is provided for an electronic device.