Negative Pressure Earphone Sealing Framework
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Solution Overview
Problem
Conventional earphones suffer from deformation of the diaphragm due to rapid air flow when inserted into the ear, leading to unpleasant noises and compromised sound performance, especially for medium-pitched and high-pitched sounds, and are not water-resistant due to the need for openings.
Innovation Solution
A negative pressure earphone design featuring a sealing framework with a negative pressure portion that diverts incoming air flow, eliminating the need for openings in the main body and cover portion, and utilizing a moving coil sound unit fitted to this framework, which is made of composite materials including metal, macromolecular chemicals, and organic materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If openings are provided in the main body and cover portion to allow air flow, then the earphone can vent air, but water resistance is compromised and sound performance is degraded
Solution Approach 1:
The patent introduces a negative pressure portion as an intermediary component between the diaphragm and the external environment. This component mediates the air flow by creating a pressure differential that redirects air away from the diaphragm, eliminating the need for openings while maintaining both water resistance and sound performance.
Solution Approach 2:
The patent utilizes pneumatic principles by employing the negative pressure portion to create and control pressure differentials within the earphone structure. This pneumatic mechanism redirects air flow patterns without requiring physical openings, thereby maintaining water resistance while preventing diaphragm deformation.
2Object-affected harmful factors
If openings are provided in the main body and cover portion to allow air flow, then the earphone can vent air, but sound performance is degraded
Solution Approach 1:
The negative pressure portion serves as a mediator that controls air flow dynamics without compromising sound quality. By creating a pressure differential, it redirects air away from the diaphragm while maintaining the integrity of the sealing structure, thus preserving sound performance.
Solution Approach 2:
The patent changes the pressure parameter within the earphone structure by introducing the negative pressure portion. This creates a pressure differential that alters air flow patterns, preventing direct impact on the diaphragm while maintaining optimal sound performance without requiring openings.
3Reliability
If a sealing framework is used to prevent air flow deformation, then water resistance is improved, but the structure becomes more complex
Solution Approach 1:
The patent merges the sealing framework and the negative pressure portion into an integrated structure. The negative pressure portion is fitted directly onto the sealing framework, combining multiple functions (sealing, pressure control, air flow redirection) into a unified component assembly, thereby reducing overall structural complexity.
Solution Approach 2:
The sealing framework with the integrated negative pressure portion performs multiple functions simultaneously: it provides water resistance through sealing, controls pressure differentials, and redirects air flow. This multi-functionality reduces the need for separate components, simplifying the overall structure.
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 prevents diaphragm deformation, enhances sound quality, particularly for low-pitched sounds, and ensures water resistance by eliminating the need for openings, allowing for better sound performance without air-induced noise and enabling use in underwater applications.
Implementation Method 1
A negative pressure portion (9) is disposed on the sealing framework portion (8). The moving coil sound unit (5) and the negative pressure portion (9) are fitted to the sealing framework portion (8).
Implementation Method 2
In the conventional earphones, a moving-coil sound-generating unit works according to the principles of electromagnetism and Fleming's left-hand rule. As electricity is fed to the sound generating unit, a diaphragm starts to vibrate.
Implementation Method 3
The negative pressure portion may be made of several layers or films that are made of different materials, which include metal, macromolecular chemical and organic material. The base portion may be sandwiched between a lower portion and an upper portion, which are made of a composite material.
Data Source
AI summary
A negative pressure earphone includes a main body, a cover portion, a silicone gel earplug, a filtering net and a moving coil sound unit. The silicone gel earplug is fitted to the protruding end of the main body. The filtering net is provided on the opening of the protruding end and the moving coil sound unit is disposed inside the main body. The cover portion is fitted to the other end of the main body. A sealing framework portion is disposed inside the main body and the moving coil sound unit is fitted to the sealing framework portion. A negative pressure portion is disposed on the sealing framework portion. The negative pressure earphone of the present invention is structurally simple and water resistant and does not have to have an opening in its cover portion.