Sound Device Frame Through-Hole for Symmetrical Sound Quality
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Solution Overview
Problem
Existing sound devices exhibit asymmetric sound quality and large amplitude differences between the sound hole side and non-sound hole side due to the fixation of the magnet assembly blocking the front cavity, leading to suboptimal acoustic performance.
Innovation Solution
A sound device design featuring a frame with a through hole on the side away from the sound outlet, symmetrically arranged with respect to the frame's axis, and a magnet system with a central assembly and side magnets to balance sound quality and reduce amplitude differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the magnet assembly is fixed to the housing, then the magnet assembly is stable and supported, but it blocks part of the front cavity resulting in asymmetric sound quality and large amplitude difference
Solution Approach 1:
The patent extracts the harmful blocking effect by introducing a through hole in the frame that removes the obstruction caused by the magnet assembly fixation, allowing sound waves to pass through and eliminating the asymmetry in sound quality and amplitude distribution
Solution Approach 2:
The patent applies asymmetry by positioning the through hole specifically on the side of the frame away from the sound outlet, creating a symmetric sound field distribution that counterbalances the asymmetric blocking effect of the fixed magnet assembly
2Device complexity
If the magnet assembly blocks part of the front cavity, then the magnet assembly structure is simple, but the sound quality becomes asymmetric with large amplitude difference
Solution Approach 1:
The through hole extracts the harmful blocking function while preserving the simple fixation structure of the magnet assembly, removing only the obstructive effect on sound waves without complicating the mechanical support structure
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
The design achieves symmetrical sound quality and reduces the maximum amplitude difference between the sound hole side and non-sound hole side, enhancing acoustic performance.
Implementation Method 1
a coil configured to drive the diaphragm; and a magnet system configured to drive the vibration system to generate sound signal
Implementation Method 2
an elastic member configured to support the vibration system
Data Source
AI summary
The present disclosure discloses a sound device including a housing and a speaker unit. The speaker unit of the sound device includes a basket, the vibration system, a magnet system, and an elastic member. The housing of the sound device includes an upper cover, a bottom cover, and a side wall having a sound outlet. A front cavity is formed between the upper cover and the speaker unit. The vibration system includes a diaphragm, a coil and a frame supporting the coil. The magnet system includes a central magnet assembly connected to the upper cover. The frame surrounds the central magnet assembly. A through hole is provided on a side of the frame away from the sound outlet. The sound device in the present disclosure has symmetrical sound quality and smaller amplitude difference.