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 an annular uppervibrating diaphragm, an annular lower vibrating diaphragm, an annular voice coil, an annular upper framework, an annular lower framework and an annular isolation vibrating diaphragm. The upper vibrating diaphragm is fixed to the basin frame and defines a containing space together with the basin frame, the side, away from the containing space, of the upper vibrating diaphragm communicates with theoutside and serves as an upper front cavity for the upper vibrating diaphragm to produce sound, and the upper vibrating diaphragm is arranged around the magnetic circuit system at intervals. The lower vibrating diaphragms are arranged around the magnetic circuit system at intervals, and the peripheral sides of the lower vibrating diaphragms are fixed on the basin stand. The upper framework is respectively connected with the upper vibrating diaphragm and the voice coil. The lower framework is respectively connected with the lower vibrating diaphragm and the voice coil. The outer peripheral side of the isolation diaphragm is connected with the basin stand body, the inner peripheral side of the isolation diaphragm is connected with the lower skeleton, and the lower diaphragm, the lower skeleton, the isolation diaphragm and the basin stand jointly divide the accommodation space into a lower front cavity used for sounding of the lower diaphragm and a rear cavity used for sharing of the upper diaphragm and the lower diaphragm. Compared with the prior art, the sound production device is higher in acoustic loudness and better 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 electronic sound box products. 【Background technique】 [0002] The sound-generating device in the related art includes a pot frame, a vibration system fixed to the pot frame, and a magnetic circuit system with a magnetic gap. The magnetic circuit system drives the vibration system to vibrate and produce sound. The vibration system includes a The frame is used to vibrate and sound the diaphragm, the dome attached to the diaphragm is close to the skeleton on the side of the magnetic circuit system, and the sound is inserted in the magnetic gap and connected with the skeleton to drive the diaphragm to vibrate. lock up. [0003] However, in the sound-generating device of the related art, the vibration system and the magnetic circuit system are stacked up and down, and the structure of the magnetic circuit system is limited in the sound-ge...

AI Technical Summary

Problems solved by technology

[0003] However, in the sound-generating device of the related art, the vibration system and the magnetic circuit system are stacked up and down, and the structure of the magnetic circuit system is limited in the sound-generating device of the same height, thereby limiting the BL value of its magnetic field; in addition , the sound-generating device has only one diaphragm structure, and the effective vibration area (SD) of the diaphragm is small, thereby limiting the loudness of the sound-generating device

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