Sound production device

Abstract

The invention provides a sound production device. The sound production device comprises a basin stand, a vibration system and a magnetic circuit system; the vibration system comprises a vibrating diaphragm and a dome; the vibrating diaphragm comprises a vibrating part, a folding ring part, a fixing part and a first through hole penetrating through the vibrating part; the basin stand, the vibratingdiaphragm and the magnetic circuit system jointly form a sound production inner cavity in an enclosing mode, and the first through hole is communicated with the sound production inner cavity. The dome is attached and fixed to the vibration part; the dome comprises a first body layer attached and fixed to the vibration part, a second body layer arranged right opposite to the first body layer, anda breathable isolation piece clamped between the first body layer and the second body layer. The first body layer is provided with a second through hole penetrating through the first body layer, the second through hole is communicated with the first through hole, the second body layer is provided with a third through hole penetrating through the second body layer, and the third through hole is communicated with the second through hole; and the breathable isolation piece completely covers the second through hole and the third through hole at the same time. Compared with the prior art, the soundproduction device is good in reliability and excellent in 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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