Loudspeaker module and sound generating device

Abstract

The invention discloses a loudspeaker module and a sound production device, and the loudspeaker module comprises a shell assembly, a loudspeaker unit, a sound absorption part, and a ventilation isolation part, and the shell assembly is provided with an installation cavity; the loudspeaker unit is installed in the installation cavity and forms a first sound cavity and a second sound cavity which are communicated with each other with the shell assembly in an enclosing mode, and a filling chamber is arranged in the second sound cavity; the filling chamber is filled with the sound absorption part;a communicating opening is formed in one side, close to the first sound cavity, of the filling chamber; the ventilation isolation part is arranged on the communicating opening; an air flow channel isdefined by the chamber wall of the filling chamber and the inner wall of the shell assembly, the air flow channel communicates with the first sound cavity, and at least one end, away from the ventilation isolation part, of the air flow channel is provided with a vent hole communicating with the filling chamber. According to the loudspeaker module, the filling area structure of the loudspeaker module is improved, the contact effect of airflow and the sound absorption part is better, and the acoustic performance is improved.

Description

technical field [0001] The invention relates to the technical field of loudspeakers, in particular to a loudspeaker module and a sounding device. Background technique [0002] With the development of social economy and the improvement of living standards, consumers have higher requirements for mobile phone audio performance indicators, which requires more mobile phone space for sound cavity design, but the contradiction is that the client also has It is required that the mobile phone should be as light and thin as possible to improve the grip feeling and be easy to carry. Therefore, the expansion of the sound chamber space is limited, and even needs to be compressed. [0003] In recent years, in order to expand the volume of the sound cavity, speaker module manufacturers have adopted the method of filling sound-absorbing particles in the existing sound cavity. Without expanding the physical volume of the sound cavity, the equivalent volume of the audio rear cavity has been i...

AI Technical Summary

Problems solved by technology

[0002] With the development of social economy and the improvement of living standards, consumers have higher requirements for mobile phone audio performance indicators, which requires more mobile phone space for sound cavity design, but the contradiction is that the client also has It is required that the mobile phone should be as light and thin as possible, improve the grip feeling, and be easy to carry. Therefore, the expansion of the sound chamber space is limited, and even needs to be compressed

[0003] In recent years, in order to expand the volume of the sound cavity, speaker module manufacturers have adopted the method of filling sound-absorbing particles in the existing sound cavity. Without expanding the physical volume of the sound cavity, the equivalent volume of the audio rear cavity has been increased. The room and the sound cavity are connected by inserting mesh cloth, but only the isolation mesh cloth in the entire filling room can allow the airflow to enter and exit, and the airflow at the far end is not smooth, resulting in poor gas adsorption effect of the sound-absorbing material, which affects the speaker module. Group Acoustic Performance

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