Speaker Shield Can Layout for Compact Low-Frequency Resonance
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Solution Overview
Problem
Existing electronic devices face challenges in miniaturization while maintaining high-quality audio output, particularly in the low sound range, due to the need for large resonance spaces for low-frequency audio signals.
Innovation Solution
The electronic device incorporates a shield can with a first and second support member, a printed circuit board with a through-hole, and a speaker inserted into the through-hole, along with a shield can that partially covers the speaker and an electronic component, creating a resonance space for audio signals.
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 becomes insufficient
Solution Approach 1:
The shield can is designed to serve dual functions: shielding electromagnetic interference and providing resonance space for audio signals. By merging these two functions into a single component, the patent eliminates the need for separate resonance chambers, thereby maintaining adequate resonance volume while achieving device miniaturization.
Solution Approach 2:
The shield can is configured to perform multiple functions simultaneously: electromagnetic shielding, acoustic resonance chamber, and structural support. This multi-functionality allows the device to maintain portability while preserving the necessary resonance space for low-frequency audio output.
2Reliability
If a resonance space is provided for low-frequency audio signals to improve audio quality, then the audio quality is enhanced, but the device size increases
Solution Approach 1:
The shield can integrates the resonance chamber function directly into its structure, eliminating the need for separate acoustic chambers. This merging allows the device to maintain high-quality low-frequency audio output while avoiding the space penalty that would result from adding dedicated resonance spaces.
Solution Approach 2:
The shield can extends in the vertical dimension (thickness direction) rather than expanding horizontally. By utilizing the vertical space efficiently, the patent creates adequate resonance volume without increasing the device's footprint, thereby maintaining compact form factor while ensuring audio quality.
3Object-affected harmful factors
If the shield can covers both the speaker and electronic component, then electromagnetic shielding is improved, but the resonance space may be compromised
Solution Approach 1:
The shield can combines electromagnetic shielding and resonance chamber functions into a single integrated structure. The can is configured to cover both the speaker and electronic component for comprehensive shielding, while simultaneously providing the necessary resonance space through its internal geometry, thus resolving the potential conflict between shielding coverage and resonance volume.
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 audio quality by optimizing resonance, allowing for miniaturization without compromising sound performance.
Implementation Method 1
A quality of the audio signal may be improved through a resonance phenomenon that vibrates with a large amplitude at a specific frequency
Data Source
AI summary
An electronic device is provided. The electronic device includes a first support member, a second support member spaced apart from the first support member, a printed circuit board (PCB) defining a first through-hole, the PCB being disposed on a surface of the first support member facing the second support member, a speaker, inserted into the first through-hole, disposed on the surface of the first support member, an electronic component, disposed on a surface of the PCB facing the second support member, spaced apart from the speaker, a shield can, disposed on the surface of the PCB, at least partially enclosing the speaker and the electronic component, the shield can including a first portion, including a region overlapping the speaker when the shield can is viewed from above, at least partially covering the speaker, and a second portion, partially covering the electronic component by extending from the first portion toward the electronic component, defining a first opening aligned with the electronic component, and a first sealing member, surrounding a periphery of the first opening, disposed between the second portion and the second support member, wherein a first space between the first portion and the speaker is connected to a second space between the second portion and the PCB for a resonance space for an audio signal output from the speaker.