Unistructural Speaker Cone with Arcuated Segments
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Solution Overview
Problem
Conventional speaker systems face issues with time delay phase distortion, irregular off-axis response, and complex impedance loads due to the use of multiple drivers and crossover networks, leading to poor sound quality and increased costs.
Innovation Solution
A unistructurally formed acoustic speaker cone unit with a central dome-shaped cone and main diaphragm featuring arcuated segments and concentric ribs, providing a constant mechanical load and impedance for the voice coil, and a suspension ring for linear motion control, which operates as a mechanical wave transmission line to produce phase-coherent sound waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional speaker systems use multiple drivers and crossover networks, then they can cover a broad frequency range, but they produce time delay phase distortion and irregular off-axis response
Solution Approach 1:
The patent merges multiple driver functions into a single cone unit that integrates a central dome-shaped high-frequency driver and a main diaphragm low-frequency driver into one unistructurally formed component. This single integrated structure eliminates the phase distortion and timing issues caused by multiple separate drivers and crossover networks, while maintaining broad frequency coverage through the dual-driver design within the unified cone.
2Adaptability or versatility
If conventional speaker systems use multiple drivers, then they can achieve broad frequency coverage, but they increase system complexity and cost
Solution Approach 1:
The patent combines multiple driver components into a single unistructurally formed cone unit that includes both high-frequency (central dome) and low-frequency (main diaphragm) capabilities. This integration eliminates the need for separate drivers, crossover networks, and associated components, thereby reducing system complexity and cost while maintaining broad frequency coverage.
Solution Approach 2:
The single cone unit serves multiple functions simultaneously: the central dome-shaped portion handles high-frequency sounds while the main diaphragm handles low-frequency sounds. This multi-functional design replaces what would traditionally require multiple specialized drivers and crossover networks, simplifying the overall system architecture.
3Device complexity
If a single cone unit is used, then system complexity is reduced, but maintaining phase coherence and sound pressure level across all directions is challenging
Solution Approach 1:
The cone unit is segmented into distinct functional zones: a central dome-shaped high-frequency driver and a main diaphragm low-frequency driver. Each segment is optimized for its frequency range and positioned to work together as a unified structure, maintaining phase coherence and consistent sound pressure level across different listening angles.
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 solution achieves a phase-coherent wavefront that maintains sound pressure level and intensity on and off-axis, reducing the need for multiple drivers and crossover networks, resulting in improved sound quality and reduced system complexity.
Implementation Method 1
The aforementioned arc ribs act to maintain stiffness outwardly on each segment during sound (wave) propagation
Implementation Method 2
acoustic speaker cone unit for conversion of electromechanical energy to a broad range of audio frequency sounds
Data Source
AI summary
An unistructurally formed acoustic speaker cone unit includes (a) a suspension ring with at least one continuous loop rib; (b) a central dome-shaped cone with thin, arcuate pie-shaped segments which radiate outwardly, and with a plurality of arc ribs; and (c) a main diaphragm having a plurality of segments radiating outwardly and extending to the suspension ring. Each main diaphragm segment has an arcuate cross-section, thereby creating a concave side and a convex side. The central cone segments are preferably equal in number to the diaphragm segments and are in alignment therewith.