Speaker Vent Membrane Integration for Waterproof Acoustic Assembly
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Solution Overview
Problem
The existing sounding devices in portable mobile terminals face assembly challenges due to complex glue structures between the air-permeable membrane and diaphragm, which negatively affect acoustic performance.
Innovation Solution
The sounding device integrates the frame and air-permeable membrane through injection molding, with a connection hole allowing communication between front and rear cavities, and includes a silicone waterproof ring for enhanced assembly and waterproof performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the air-permeable membrane is attached to the diaphragm using glue to cover the through hole, then waterproof performance is improved, but the assembly process becomes complex and acoustic performance deteriorates
Solution Approach 1:
The patent merges the air-permeable membrane and diaphragm into a single integrated component. The air-permeable membrane is formed as an integral part of the diaphragm structure, eliminating the need for separate attachment processes and glue application. This integration simplifies assembly while maintaining waterproof performance and improving acoustic characteristics by removing the glue layer that interfered with diaphragm vibration.
2Reliability
If the air-permeable membrane is attached to the diaphragm using glue, then waterproof performance is improved, but acoustic performance is reduced due to negative effects on diaphragm vibration
Solution Approach 1:
The air-permeable membrane and diaphragm are merged into a single integrated component. This eliminates the glue layer that negatively affected diaphragm vibration and acoustic performance. The integrated structure ensures that the air-permeable membrane moves synchronously with the diaphragm, maintaining acoustic integrity while providing waterproof protection.
3Manufacturing precision
If a through hole is provided on the diaphragm to communicate with the rear cavity, then acoustic performance is improved, but waterproof performance deteriorates
Solution Approach 1:
The diaphragm is designed with localized different properties: the air-permeable membrane portion allows air passage for acoustic performance, while the surrounding diaphragm material provides waterproof protection. This local differentiation enables the structure to simultaneously achieve both acoustic communication and waterproofing functions.
Solution Approach 2:
The air-permeable membrane is implemented as a porous material that allows air to pass through while maintaining structural integrity for waterproofing. The porous structure enables acoustic communication between front and rear cavities while the membrane's material properties prevent water penetration.
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
This integration simplifies assembly, improves acoustic performance, and ensures stable vibration and waterproofing, enhancing overall device functionality.
Implementation Method 1
a magnet system configured to drive the vibration system to generate sound
Implementation Method 2
an air-permeable membrane is inserted into the frame and covers the connection hole
Data Source
AI summary
The present disclosure discloses a sounding device including a frame, a vibration system mounted on the frame, including a diaphragm fixed to the frame and enclosing a front cavity with the frame; and a magnet system configured to drive the vibration system to generate sound, enclosing a rear cavity with the diaphragm and the frame; a connection hole is provided on the frame for connecting the front cavity with the rear cavity; an air-permeable membrane is inserted into the frame and covers the connection hole. The sounding device in the present disclosure has high assembly performance, waterproof performance and acoustic performance.