Sound device

Abstract

The invention provides a sound generating device, which includes a pot frame, a vibration system and a magnetic circuit system; the vibration system includes a diaphragm, a voice coil and an elastic support assembly; the magnetic circuit system includes a yoke, a main magnet, and a first auxiliary magnet and the second secondary magnet, the first secondary magnet and the second secondary magnet are spaced apart from the main magnet and together form a magnetic gap, the elastic support assembly includes an elastic member, the elastic member includes a first fixed arm, and a set of mutually spaced The two second fixed arms and the two elastic arms, the first fixed arm, the second fixed arm and the elastic arms together form an opening-shaped accommodation space facing the direction of the main magnet, and the second auxiliary magnet is accommodated in the accommodation space ; The second secondary magnet extends to the direction of the main magnet, and / or the main magnet extends to the direction of the second secondary magnet, so that the part of the magnetic gap close to the second secondary magnet is the same as the part of the magnetic gap close to the first secondary magnet The sections have the same width. Compared with the related art, the sound emitting device of the invention has high sensitivity and better acoustic performance.

Description

【Technical field】 [0001] The invention relates to the field of electroacoustic conversion, in particular to a sound generating device used in electronic sound box 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. At present, the functions of mobile phones are extremely diverse, one of which is the function of high-quality music. Therefore, sound-generating devices for playing sound are widely used in current smart mobile devices. [0003] The sound-generating device in the related art includes a frame, a vibration system fixed to the frame, and a magnetic circuit system with a magnetic gap. The vibration system includes a diaphragm fixed to the frame, a voice coil fixed to the diaphragm and inserted into the magnetic gap to drive the diaphragm to vibrate and produce soun...

AI Technical Summary

Problems solved by technology

[0004] However, in the sound-generating device of the related art, in order to better fit and fix one end of the voice coil on the elastic support component, and to ensure the glued state of the elastic support component and the voice coil, the second fixed arm of the elastic support component is a The overall structure, and the side width of the glued surface is greater than the width of the voice coil, there will be 0.05 ~ 0.1 mm elastic support components on the inner and outer sides of the bottom of the voice coil beyond the inner and outer walls of the voice coil, resulting in a magnetic gap on the short side of the main magnet Much larger than the magnetic gap on the long side, that is, the magnetic gap formed by the second auxiliary magnet and the main magnet is much larger than the magnetic gap formed by the first auxiliary magnet and the main magnet, resulting in low sensitivity of the sound-generating device

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