Speaker Assembly Casing for Slim Electronic Devices
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Solution Overview
Problem
Electronic devices with slim casings face limitations in configuring speaker assemblies due to restricted space, which hinders the size of the speaker components, particularly the magnet, affecting sound pressure and performance.
Innovation Solution
The speaker assembly is designed with a casing that exposes elements like the magnet and cone paper externally, optimizing space utilization by minimizing the casing thickness and incorporating a resonant region and cushion to enhance sound delivery and prevent casing deformation, allowing for improved performance without size constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the casing thickness is reduced to achieve a slim electronic device, then the external appearance is improved, but the space for speaker components is limited, affecting sound pressure and performance
Solution Approach 1:
The speaker element is rotated by 90 degrees relative to the casing thickness direction, allowing the magnet to be positioned in the plane of the casing rather than along its thickness. This dimensional reorientation enables the magnet size to be determined by the casing's width and depth rather than its limited thickness, resolving the contradiction between slim casing and adequate sound pressure
2Power
If the magnet size is increased to improve sound pressure, then the speaker performance is improved, but the casing size must be increased, which is not feasible in slim devices
Solution Approach 1:
By rotating the speaker element 90 degrees, the magnet is positioned in the horizontal plane of the casing rather than along its thickness dimension. This allows the magnet to utilize the casing's width and depth dimensions, enabling a larger magnet area without increasing the overall casing thickness or external dimensions
3Power
If the speaker element is positioned away from the center of the casing, then the magnet size can be increased, but the casing may deform or vibrate
Solution Approach 1:
The casing is divided into functional regions: a first region that contacts the speaker element and a second region that serves as a resonant chamber. This segmentation allows the casing to be optimized for different functions - structural support where needed and acoustic resonance where beneficial - reducing overall deformation while accommodating a larger magnet
Solution Approach 2:
The casing thickness is varied across different regions, with increased thickness in areas subject to stress from the speaker element and optimized thickness in the resonant region to enhance acoustic performance. This parameter change allows the casing to withstand forces from a larger magnet while maintaining acoustic benefits
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 enables the speaker assembly to achieve high sound pressure and performance even in slim electronic devices by maximizing the size of the magnet and reducing material costs, while preventing casing deformation and vibration transfer.
Implementation Method 1
The casing may include a resonant region to which a sound generated by the speaker unit is delivered
Implementation Method 2
The speaker assembly may include at least one of cone paper, a frame outside the cone paper, and a magnet configured to operate in response to an electrical signal
Data Source
AI summary
Disclosed herein is an electronic device. In an embodiment, the electronic device may include a body, a display combined with the front of the body, and a speaker assembly embedded on at least one side of the body, wherein the speaker assembly may include a casing configured to form an external appearance and a speaker unit combined with the casing and configured to have at least part of an element of the speaker assembly exposed to an outside of the casing.