Refrigerator Speaker Mount Structure for EMC Isolation and Sound Directivity
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Solution Overview
Problem
Existing refrigerator sound structures suffer from electrostatic coupling during electromagnetic compatibility experiments, affecting precision, and resonance with the mounting panel degrades sound quality, with divergent sound emission making listening difficult.
Innovation Solution
The sound body and mounting panel are separated by a gap to prevent electrostatic coupling and resonance, and a cylindrical enclosing portion is used to converge sound waves, improving directivity and listening experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the sound body directly contacts the mounting panel, then the structure is simple and easy to manufacture, but electrostatic coupling occurs during electromagnetic compatibility experiments affecting precision
Solution Approach 1:
The patent introduces a mounting bracket as an intermediate component that segments the direct contact path between the sound body and mounting panel. The mounting bracket includes a first mounting portion connected to the mounting panel and a second mounting portion connected to the sound body, creating a physical separation that prevents electrostatic coupling while maintaining structural support.
Solution Approach 2:
The mounting bracket serves as an intermediary element between the sound body and mounting panel. This intermediate structure allows the sound body to be securely mounted while preventing direct contact that would cause electrostatic coupling during electromagnetic compatibility testing, thus resolving the contradiction between manufacturing simplicity and measurement precision.
2Ease of manufacture
If the sound body directly contacts the mounting panel, then the structure is simple, but resonance occurs during use affecting sound quality
Solution Approach 1:
By introducing the mounting bracket as a separate component, the patent segments the structural connection between sound body and mounting panel. This segmentation prevents direct mechanical coupling that would cause resonance, while the bracket's design maintains secure mounting and proper sound transmission.
Solution Approach 2:
The mounting bracket acts as a mediator that decouples the sound body from direct contact with the mounting panel. This intermediate structure eliminates the resonance pathway while maintaining the necessary mechanical support and acoustic transmission, thereby improving sound quality without significantly complicating the manufacturing process.
3Measurement precision
If the sound body is separated from the mounting panel, then electrostatic coupling is prevented and resonance is reduced, but the sound structure becomes more complex
Solution Approach 1:
The mounting bracket segments the sound structure into distinct functional portions: a first mounting portion for attachment to the mounting panel and a second mounting portion for attachment to the sound body. This segmentation achieves electrostatic isolation and resonance reduction while maintaining a relatively simple overall structure through modular design.
4Reliability
If the sound body is separated from the mounting panel, then sound quality is improved by reducing resonance, but the structure becomes more complex
Solution Approach 1:
The mounting bracket divides the mounting function into separate portions that can be independently optimized. The first mounting portion interfaces with the mounting panel while the second mounting portion interfaces with the sound body, achieving resonance reduction and improved sound quality through this segmented approach while keeping the overall structural complexity manageable.
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 solution ensures precise electromagnetic compatibility testing, enhances sound quality by reducing resonance, and focuses sound waves for a better listening effect.
Implementation Method 1
the sound-converging effect of the enclosing portion can improve the directivity of the sound generated by the sound body
Implementation Method 2
electrostatic coupling is likely to occur, thereby affecting the experiment precision
Implementation Method 3
the sound body directly contacts the mounting panel, and the sound body easily resonates with the mounting panel during use
Data Source
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AI summary
An anti-coupling sound structure (100) for a refrigerator and a refrigerator. Said anti-coupling sound structure (100) comprises: a mounting panel (1) for connecting to a refrigerator door body (4) or a refrigerator body (5), the mounting panel (1) being provided with several through holes (11); and a sound body (2) provided on one side of the back face of the mounting panel (1) and separated, by a gap (6), from the back face of the mounting plate (1), the gap (6) being provided therein with an enclosing portion (3). Said anti-coupling sound structure (100) separates the sound body (2) and the mounting panel (1) from each other, such that the refrigerator is less prone to electrostatic coupling in an electromagnetic compatibility experiment, helping to ensure experiment precision and avoiding the impact on sound quality due to the resonance of the sound body (2) in use with the mounting panel (1); moreover, the sound-converging effect of the enclosing portion (3) can improve the directivity of the sound generated by the sound body (2), achieving a better listening effect.