Speaker Shield Can Layout for Low-Frequency Resonance Space
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Solution Overview
Problem
The challenge of miniaturizing electronic devices while maintaining high-quality audio output, particularly in the low sound range, is addressed by the need for a resonance space that is not compromised by the inclusion of various electronic components.
Innovation Solution
The implementation of a shield can that partially encloses the speaker and electronic components, creating a resonance space by connecting spaces between the shield can and the printed circuit board, ensuring adequate space for audio signal resonance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the electronic device is miniaturized to improve portability, then the device size is reduced, but the resonance space for low-frequency audio signals is insufficient
Solution Approach 1:
The shield can extends in the vertical direction (thickness direction of PCB) to create resonance space, rather than expanding horizontally. The first portion encloses the speaker while the second portion extends downward to enclose electronic components, utilizing the z-dimension to maximize resonance volume within the constrained footprint of the miniaturized device.
Solution Approach 2:
The shield can nests electronic components within its structure by having the second portion extend to enclose them. This nesting approach allows the resonance space to incorporate otherwise space-consuming electronic components, effectively using their volume for acoustic resonance while maintaining compact overall device dimensions.
2Adaptability or versatility
If various electronic components are disposed inside the electronic device to implement various functions, then device functionality is improved, but the resonance space for audio signals is reduced
Solution Approach 1:
The shield can merges the function of shielding electronic components with the function of creating resonance space. By having the second portion extend to enclose electronic components while maintaining connection to the first portion, the structure combines electromagnetic shielding and acoustic resonance functions into a single integrated component.
Solution Approach 2:
The shield can serves multiple functions: it shields the speaker from electromagnetic interference, creates resonance space for low-frequency audio enhancement, and encloses electronic components to provide electromagnetic shielding for them. This multi-functionality allows simultaneous achievement of audio quality and functional integration in a miniaturized device.
3Reliability
If the shield can fully encloses the speaker to maximize resonance space, then audio signal quality is improved, but access to electronic components for manufacturing and maintenance becomes difficult
Solution Approach 1:
The shield can is segmented into a first portion that encloses the speaker and a second portion that extends to enclose electronic components, with openings provided in both portions. This segmentation allows selective access to different components through appropriate openings while maintaining the enclosing structure for resonance and shielding functions.
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 configuration enhances the quality of audio signals in the low sound range by providing a sufficient resonance space, despite the presence of other components, thereby maintaining audio performance in compact devices.
Implementation Method 1
A first space between the first portion and the speaker may be connected to a second space between the second portion and the PCB, to provide a resonance space for an audio signal output from the speaker
Data Source
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AI summary
This electronic device comprises: a first support member; a second support member; a printed circuit board disposed on the first support member; a speaker disposed on the first support member; an electronic component disposed on the printed circuit board; a shield can including a first portion that surrounds the speaker and a second portion that extends from the first portion toward the electronic component, surrounds the electronic component, and includes a first opening; and a first sealing member surrounding an edge of the first opening. A first space between the first portion and the speaker is connected to a second space between the second portion and the printed circuit board for a resonance space.