Sound production device

Abstract

The invention discloses a sound production device, the sound production device comprises a shell, a magnetic circuit system and two vibration systems, the magnetic circuit system comprises a central magnetic circuit structure and side magnetic circuit structures, the central magnetic circuit structure comprises a central magnet and two central magnetic conductive plates, each central magnetic conductive plate comprises a first magnetic conductive part corresponding to the central magnet, the at least one central magnetic conductive plate comprises a first connecting part extending outwards from the edge of the first magnetic conductive part, and the first connecting part is connected with the shell; the side magnetic circuit structure comprises a plurality of side magnets and side magnetic conductive plates, and the side magnets and the first connecting parts are distributed at intervals in the circumferential direction of the central magnet; and magnetic gaps are formed between the central magnet and the central magnetic conductive plate and between the side magnets and the side magnetic conductive plates. Each vibration system comprises a vibrating diaphragm and a voice coil, the vibrating diaphragms are installed on the shell, the two vibrating diaphragms are arranged on the two opposite sides of the magnetic circuit system respectively, and the voice coil of each vibration system extends into the magnetic gap. According to the technical scheme, the sound loudness of the sound production device can be improved while double-sided sound production is realized.

Description

technical field [0001] The invention relates to the technical field of acoustic-electric conversion, in particular to a sound generating device. Background technique [0002] In the current double-sided sounding acoustic devices, a suspension bracket with side walls is usually used to support the central magnetic circuit assembly and the outer magnetic circuit assembly, and the sizes of the voice coils of the two vibration systems are different, and the two voice coils are respectively Located on the inner and outer sides of the side wall of the bracket. However, this structure will cause the distance between the inner magnetic circuit and the outer magnetic circuit to be too large, and the space for the magnet to be placed is small, resulting in a small volume of the magnet. In turn, the magnetic performance of the double-sided sounding acoustic device is poor, the effective magnetic field intensity obtained by the two voice coils is small, and the sound loudness of the ac...

AI Technical Summary

Problems solved by technology

However, this structure will cause the distance between the inner magnetic circuit and the outer magnetic circuit to be too large, and the space for the magnet to be placed is small, resulting in a small magnet size

As a result, the magnetic performance of the double-sided sounding acoustic device is poor, the effective magnetic field strength obtained by the two voice coils is small, and the sound loudness of the acoustic device is low

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