Adjustable Sound Cavity in Miniature Electronic Devices
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Solution Overview
Problem
Many electronic devices have limited internal space, resulting in inadequate bass production due to insufficient sound cavities.
Innovation Solution
The electronic device incorporates an enlarged sound cavity design that can be adjusted without occupying additional internal space, achieved through a modular cover system that expands the sound cavity volume, allowing for enhanced bass effect while maintaining device miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If the internal space of the electronic device is increased to provide larger sound cavities, then bass quality is improved, but device size increases
Solution Approach 1:
The patent extends the sound cavity in the depth direction (z-axis) by making the back cover protrude from the front cover, creating a three-dimensional sound cavity space that does not increase the device's length, width, or height dimensions. This dimensional approach allows larger sound cavity volume while maintaining compact device footprint.
Solution Approach 2:
The sound cavity is nested within the existing device structure by utilizing the space between the front cover and back cover. The back cover is positioned to define the sound cavity space, effectively nesting the acoustic chamber within the device's overall form factor without requiring additional external volume.
2Volume of stationary object
If the sound cavity volume is increased to enhance bass effect, then sound quality is improved, but the device becomes less portable
Solution Approach 1:
By utilizing the depth dimension through the protruding back cover design, the patent increases sound cavity volume without increasing the device's length and width dimensions that directly impact portability. The sound cavity is created in the z-direction, allowing enhanced bass while maintaining a compact footprint for easy handling.
3Device complexity
If a fixed sound cavity design is used, then device structure is simple, but sound quality cannot be adjusted
Solution Approach 1:
The patent incorporates a movable back cover that can be adjusted between different positions, allowing the sound cavity volume to be dynamically changed. The back cover can be moved closer to or farther from the speaker unit, enabling users to adjust bass response according to their preferences while maintaining a relatively simple overall structure.
Solution Approach 2:
The back cover serves multiple functions: it defines the sound cavity space, provides structural support, and acts as an adjustable element for sound quality customization. This multi-functionality allows the single component to address both structural simplicity and sound adjustability requirements.
Data Source
AI summary
An electronic device includes a body and a sound cavity assembly. The sound cavity assembly is coupled to the body and forms a sound cavity cooperatively with the body. The sound cavity includes a speaker and a cover. The cover is coupled to the body and at least partially protruding from the body to adjust a volume of the sound cavity.