Sound device

Abstract

The invention provides a sound-generating device, which includes a basin frame, a vibration system and a magnetic circuit system; the vibration system includes a diaphragm and a dome; the diaphragm includes a vibrating part, a ring part, a fixing part and a first A through hole, the basin frame, the diaphragm and the magnetic circuit system together form a sounding inner cavity, the first through hole communicates with the sounding inner cavity; the ball top is fitted and fixed on the vibrating part, and the ball top is fitted and fixed on the The first body layer of the vibrating part, the second body layer facing the first body layer, and the air-permeable spacer sandwiched between the first body layer and the second body layer, the first body layer is provided with The second through hole on the top, the second through hole communicates with the first through hole, the second body layer is provided with a third through hole passing through it, the third through hole communicates with the second through hole; the breathable spacer completely covers at the same time the second through hole and the third through hole. Compared with related technologies, the sound emitting device of the present invention has good reliability and excellent acoustic performance.

Description

【Technical field】 [0001] The invention relates to the field of electroacoustic conversion, in particular to a sound generating device used in portable electronic products. 【Background technique】 [0002] With the advent of the mobile Internet era, the number of smart mobile devices continues to rise. Among the many mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. Sound-generating devices for playing sound are widely used in smart mobile devices such as mobile phones. [0003] The sound-generating device in the related art includes a pot frame, a vibration system fixed on the pot frame, and a magnetic circuit system that drives the vibration system to vibrate and sound. The vibration system includes a diaphragm fixed to the pot frame and drives the diaphragm to vibrate. The voice coil, the basin frame, the vibration system and the diaphragm together form a sounding inner cavity. The magnetic circuit system is provided wit...

AI Technical Summary

Problems solved by technology

[0004] However, in the related art, due to the small size of the pressure relief hole, foreign matter from the outside can easily block the pressure relief hole or external liquid can enter the inner cavity of the sounding device through the pressure relief hole, thereby reducing the reliability of the sounding device's vibration and sound. , making its acoustic performance poor

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