Ribbon Diaphragm Layout for Full-Range Loudspeaker Output
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Solution Overview
Problem
Conventional ribbon speakers are unable to produce bass effectively, limiting their ability to cover the entire frequency spectrum, including high, medium, and low frequencies, which is a drawback in meeting user needs for comprehensive sound reproduction.
Innovation Solution
A diaphragm design featuring insulating films with magnetic pole areas and conductive films arranged in series, connected via connecting pieces to form an energized circuit, which is placed within a magnetic field to enhance low-frequency sound production, allowing the diaphragm to cover the high, medium, and low frequency spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a voice coil assembly is cooled by circulating cooling fluid through channels in the former, then the voice coil assembly can be cooled effectively, but the manufacturing complexity and cost increase due to requiring hermetic sealing and precise alignment of the former
Solution Approach 1:
The cooling system is segmented into modular components: a former with integrated cooling channels, a surround with separate cooling channels, and a spider component. This segmentation allows each component to be manufactured and cooled independently, then assembled together, reducing the complexity of hermetic sealing while maintaining effective cooling of the voice coil assembly.
Solution Approach 2:
A spider component acts as an intermediary element that connects the former and surround while providing additional cooling pathways. The spider serves as a mediator that facilitates thermal management without requiring direct hermetic sealing between the former and surround, simplifying the overall system complexity.
2Reliability
If the former is made hermetically sealed to contain cooling fluid, then cooling efficiency improves, but manufacturing precision requirements and production cost increase
Solution Approach 1:
The hermetic sealing requirement is distributed across multiple segmented components (former, surround, spider) rather than requiring a single hermetic seal. Each component can be sealed independently using simpler methods, and the assembly maintains fluid containment through the integrated structure of multiple parts, reducing individual manufacturing precision requirements.
Solution Approach 2:
The cooling channels are nested within the structure of the former, surround, and spider components. The cooling fluid pathway is contained within the nested structure of these components, providing hermetic sealing through the nested arrangement rather than requiring external sealing mechanisms, thereby reducing manufacturing precision demands.
3Temperature
If cooling channels are integrated into the former and surround, then cooling effectiveness improves, but the number of manufacturing steps and production complexity increase
Solution Approach 1:
The cooling channels are merged into the structural design of the former, surround, and spider components. By combining the cooling function with the structural components, the patent achieves effective cooling without adding separate cooling system parts, thereby maintaining ease of manufacture while improving temperature control.
Solution Approach 2:
The former, surround, and spider components serve multiple functions: they provide structural support for the voice coil assembly and simultaneously serve as cooling channels for fluid circulation. This multi-functionality eliminates the need for separate cooling system components, simplifying manufacturing while achieving effective cooling.
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 diaphragm effectively produces low-frequency sounds by optimizing the area and arrangement of conductive films within the magnetic field, enabling the diaphragm to cover the entire frequency spectrum, improving sound quality and meeting user needs.
Implementation Method 1
cooling fluid may be circulated through channels in the former and/or the surround to cool the voice coil assembly
Implementation Method 2
cooling fluid may be circulated through channels in the former and/or the surround to cool the voice coil assembly
Data Source
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AI summary
Embodiments of the present disclosure provide a diaphragm and an audio device. The diaphragm comprises: at least one insulating film, a plurality of conductive films, and a plurality of connecting pieces. The insulating film is provided with a magnetic pole corresponding area. Each of the conductive films is connected at least to one insulating film, the plurality of conductive films is arranged with an interval, and the magnetic pole corresponding regions are respectively arranged on the two sides of each conductive film. The plurality of conductive films is connected in series by means of the plurality of connecting pieces to form an energized circuit. According to the technical solution provided in the embodiments of the present disclosure, the at least one insulating film is connected with the plurality of conductive films arranged with an interval, and the magnetic pole corresponding regions are respectively arranged on the two sides of each conductive film, such that a conductive film having a relatively large area can be located in a relatively strong magnetic field, each conductive film also emits low-frequency sound that meets user's needs, and the conductive film can cover the high, medium and low frequency spectrum.