Fixed Electrode Protrusions for Electroacoustic Transducer Spacing
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Solution Overview
Problem
Existing electrostatic electroacoustic transducers require separate production and mounting of spacers or nonwoven fabrics to create a space between the diaphragm and electrodes, increasing complexity and cost.
Innovation Solution
A fixed electrode with protrusions formed by plastic deformation on one surface to face the diaphragm, eliminating the need for intermediate spacers or nonwoven fabrics by varying protrusion heights to create a vibrating space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spacer or nonwoven fabric is interposed between the diaphragm and electrode to provide a space for diaphragm vibration, then the diaphragm can vibrate properly, but the production process becomes more complex and requires additional mounting steps
Solution Approach 1:
The patent merges the spacer function with the fixed electrode by forming protrusions directly on the electrode surface. The protrusions are created by plastic deformation of the electrode material itself, combining the electrode and spacer into a single integrated component, thereby eliminating the need for separate spacer production and mounting steps while maintaining the necessary vibration space for the diaphragm
Solution Approach 2:
The protrusions are formed on the fixed electrode in advance during the electrode manufacturing process through plastic deformation. This preliminary formation of the vibration space eliminates the need for subsequent mounting operations, simplifying the overall production process while ensuring proper diaphragm spacing and vibration characteristics
2Reliability
If spacers or nonwoven fabrics are used to space the diaphragm from the electrode, then the vibration space is provided, but additional components increase production cost
Solution Approach 1:
The patent combines the electrode and spacer functions into a single component by forming protrusions directly on the electrode surface through plastic deformation. This integration eliminates the need for separate spacer materials and reduces the total component count, thereby lowering production costs while maintaining effective diaphragm spacing and vibration
Solution Approach 2:
The fixed electrode serves multiple functions: it provides the electrostatic field for diaphragm actuation and simultaneously creates the vibration space through its protrusions. This multi-functionality eliminates the need for dedicated spacer components, reducing material costs and simplifying the manufacturing process
3Device complexity
If protrusions are formed on the fixed electrode by plastic deformation, then the space for diaphragm vibration is provided without additional members, but the electrode structure becomes more complex
Solution Approach 1:
The patent integrates the spacing function into the electrode structure itself by forming protrusions through plastic deformation. While the electrode shape becomes more complex, this is offset by the elimination of separate spacer components, resulting in a net reduction of overall device complexity and component count
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
Simplifies the production process, reduces component count, and maintains diaphragm vibration without additional members, thereby lowering production costs and enhancing operational efficiency.
Implementation Method 1
a fixed electrode configured to face a diaphragm and forming a capacitance with the diaphragm
Implementation Method 2
an electrostatic electroacoustic transducer
Implementation Method 3
a plurality of protrusions formed by plastic deformation on one surface of the fixed electrode that is to face the diaphragm
Data Source
AI summary
A fixed electrode configured to face a diaphragm and forming a capacitance with the diaphragm, including a plurality of protrusions formed by plastic deformation on one surface of the fixed electrode that is to face the diaphragm, so as to protrude toward the diaphragm.