Loudspeaker Module Rear Acoustic Cavity Integration
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Solution Overview
Problem
The challenge is to reduce the space occupied by loudspeaker modules in portable electronic devices while maintaining good acoustic performance, as the modules require a certain cavity size that increases the device's volume.
Innovation Solution
The loudspeaker module design incorporates a rear acoustic cavity that communicates with the terminal's internal space, utilizing the available space to enhance acoustic performance without altering the device's internal dimensions, by using a through hole or snap-fitting mechanisms to integrate the module housing with the terminal housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cavity with certain dimensions is reserved inside the loudspeaker module to ensure good acoustic performance, then the acoustic performance is improved, but the loudspeaker module occupies more space in the portable electronic product
Solution Approach 1:
The patent merges the loudspeaker module cavity with the terminal housing cavity to form a unified rear acoustic cavity. The lower module housing is fixed on the terminal housing, and the rear acoustic cavity is defined as a closed space formed by the loudspeaker unit, an outer wall of the lower module housing, and the terminal housing. This integration allows the terminal housing to contribute to the acoustic cavity volume, improving acoustic performance without increasing the loudspeaker module's physical dimensions.
2Volume of moving object
If the volume of the portable electronic product is reduced, then the device becomes more portable, but the space available for the loudspeaker module is reduced
Solution Approach 1:
The patent utilizes the third dimension (depth/thickness) of the terminal housing to expand the rear acoustic cavity volume. By defining the rear acoustic cavity as a closed space formed by the loudspeaker unit, the lower module housing, and the terminal housing, the design effectively uses the available space in the depth direction of the terminal to increase cavity volume without increasing the device's external dimensions.
3Device complexity
If the rear acoustic cavity is sealed and independent within the loudspeaker module, then the module structure is simplified, but the cavity volume is limited
Solution Approach 1:
The patent combines the terminal housing space with the loudspeaker module cavity to create a larger integrated rear acoustic cavity. The lower module housing is fixed on the terminal housing, forming a unified closed space that serves as the rear acoustic cavity. This merging allows the cavity volume to extend into the terminal housing volume, significantly increasing the effective cavity volume without adding complex separate structures.
Data Source
AI summary
Disclosed is a loudspeaker module applied inside a terminal, wherein, the terminal comprises a terminal housing, and the loudspeaker module is fixed inside the terminal. The loudspeaker module comprises a loudspeaker unit and a module housing for accommodating and fixing the loudspeaker unit. A closed space formed by the loudspeaker unit, an outer wall of the module housing, and the terminal housing is a rear sound cavity. By means of the loudspeaker module provided in the present invention, the usable space inside the terminal can be converted into the rear sound cavity, so that the space of the rear sound cavity is enlarged, and the acoustic performance of the loudspeaker module can be effectively improved. Therefore, the present invention makes full use of the inside space of the terminal to realize the thinning of the loudspeaker module without changing the inside space of the terminal, and achieves good acoustic performance.