Stacked Speaker Dome Structure for Strength and High-Frequency Output
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing speakers face challenges in achieving a balance between thickness, rigidity, heat dissipation, and high-frequency performance due to the use of a single-material dome structure.
Innovation Solution
A speaker design featuring a stacked diaphragm with a first dome and a second dome, where the second dome is smaller and fits within a receiving groove on the first dome, enhancing strength and performance without increasing overall height, and a magnetic circuit system with an avoidance groove to provide additional vibration space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single-material dome is used in the vibration system, then the manufacturing process is simple, but the dome cannot simultaneously achieve the required thickness, rigidity, molding quality, heat dissipation, and high-frequency performance
Solution Approach 1:
The patent applies composite materials by constructing the dome as a multi-layer structure consisting of a first dome and a second dome made of different materials. The first dome provides structural support while the second dome enhances vibrational performance and heat dissipation. This composite structure allows each layer to contribute its specific material properties, achieving simultaneous optimization of strength, rigidity, heat dissipation, and high-frequency performance that cannot be obtained with a single material.
Solution Approach 2:
The patent segments the dome into multiple independent layers (first dome and second dome) that can be manufactured separately and then assembled. This segmentation allows each layer to be optimized for specific functions - the first dome for structural integrity and the second dome for vibrational characteristics - while maintaining manufacturing feasibility through separate production processes followed by assembly.
2Strength
If the dome structure is made more complex to improve strength and performance, then the dome strength and vibrational reliability are enhanced, but the overall height of the speaker increases
Solution Approach 1:
The patent employs the nesting principle by placing the second dome on top of the first dome in a stacked configuration where the smaller second dome rests within the boundary of the larger first dome. This nested arrangement allows the multi-layer structure to achieve enhanced strength and vibrational performance while minimizing the increase in overall height, as the layers are arranged vertically rather than extending the speaker housing outward.
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 stacked dome structure improves the speaker's strength and performance by maintaining a compact size while enhancing vibrational reliability and high-frequency capabilities.
Implementation Method 1
a bonding layer is provided between the first dome and the second dome, the bonding layer is a glue or solder
Implementation Method 2
a vibration system and a magnetic circuit system fixed to the frame, comprising a diaphragm and a voice coil driving the diaphragm to vibrate and emit sounds
Data Source
AI summary
A speaker includes a frame, a vibration system including a diaphragm and a voice coil driving the diaphragm to vibrate and emit sounds, and a magnetic circuit system. The diaphragm includes a dome and a suspension surrounding the dome, the dome includes a first dome and a second dome stacked on the first dome, the second dome is smaller than the first dome and a projection of the second dome along a vibration direction of the diaphragm is entirely located on the first dome, the first dome is a metal dome, or a plastic dome, or a composite dome comprising a metal layer and a foam layer, the second dome is a metal dome, or a plastic dome, or a composite dome with a metal layer and a foam layer. Compared with the related art, the speaker disclosed by the present disclosure has a high strength of the dome.