Waterproof Acoustic Modules for Earphone Sensitivity Consistency
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Solution Overview
Problem
Earphones face challenges in maintaining sensitivity consistency among acoustic sensors due to installation errors and moisture-proof requirements, leading to low yield rates.
Innovation Solution
The earphone design integrates waterproof acoustic modules with pre-adjusted sensitivity, allowing flexible adjustment to ensure consistency across multiple units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If acoustic sensors are sealed and installed using a waterproof structure to prevent liquid penetration, then moisture-proof performance is improved, but sensitivity adjustment capability deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-adjusting the sensitivity of acoustic sensors during the assembly of waterproof acoustic modules before final installation into the earphone housing. This allows sensitivity calibration to be completed in advance, eliminating the need for post-assembly adjustments while maintaining waterproof integrity. The modules are pre-assembled with sensitivity adjustments made before the waterproof seal is finalized.
2Reliability
If acoustic sensors are sealed within waterproof structures, then liquid penetration is prevented, but sensitivity consistency across production batches deteriorates
Solution Approach 1:
The patent implements preliminary action by performing sensitivity adjustments on acoustic sensors during the manufacturing of waterproof acoustic modules, before these modules are installed into the final earphone products. This pre-adjustment process ensures that sensitivity parameters are standardized across all modules produced in the same batch, improving consistency while maintaining waterproof performance.
Solution Approach 2:
The patent applies segmentation by dividing the earphone system into separate waterproof acoustic modules, each containing pre-adjusted acoustic sensors. This modular approach allows independent sensitivity calibration of each module during production, ensuring that sensitivity consistency is maintained across all modules and final products without compromising waterproof integrity.
3Reliability
If waterproof structures are used to seal acoustic sensors, then liquid penetration is blocked, but disassembly and adjustment difficulty increases
Solution Approach 1:
The patent applies segmentation by creating separate, modular waterproof acoustic modules that can be independently handled. Each module contains the acoustic sensor, waterproof structure, and adjustment mechanisms as an integrated unit. This allows the modules to be assembled and adjusted before final installation, and if adjustments are needed later, entire modules can be replaced without disassembling the waterproof seal of the main housing.
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
The present application relates to the technical field of electronic devices, and provides earphones (01). Each earphone (01) comprises a housing (10) and at least one waterproof acoustic module (20); at least one accommodating cavity (130) and at least one sound through hole (140) are formed in the inner wall of the housing (10), and the at least one sound through hole (140) passes through the housing (10) and is communicated with the at least one accommodating cavity (130); the waterproof acoustic module (20) comprises a communication hole (240) and a waterproof assembly (220), the waterproof assembly (220) is configured to prevent liquid from entering the interior of the waterproof acoustic module (20) via the communication hole (240), and the at least one waterproof acoustic module (20) is arranged in the at least one accommodating cavity (130) and covers the at least one sound through hole (140), so as to prevent the liquid from entering the internal space of the housing (10) through the at least one sound through hole (140). By using the waterproof acoustic modules (20), the sensitivity difference of acoustic sensors installed in the earphones (01) can be controlled, ensuring that the sensitivity difference between different earphones ensuring the consistency of different earphones (01).