Sounding device

Abstract

The invention provides a sounding device, which comprises a basin stand, a vibration system and a magnetic circuit system. The vibration system comprises an upper vibrating diaphragm, a lower vibrating diaphragm, a voice coil, an annular framework and an isolation voice diaphragm. The upper vibrating diaphragm is fixed on the basin stand and forms an accommodating space together with the basin stand. One side, far away from the accommodating space, of the upper vibrating diaphragm is communicated with the outside and serves as an upper front cavity for the upper vibrating diaphragm to producesound. The outer peripheral side of the lower vibrating diaphragm and the outer peripheral side of the isolation vibrating diaphragm are respectively connected with the basin stand, and the inner peripheral side of the lower vibrating diaphragm and the inner peripheral side of the isolation voice diaphragm are respectively connected with the skeleton. The voice coil is connected with the upper vibrating diaphragm and the framework respectively, drives the upper vibrating diaphragm to vibrate and drives the framework to drive the lower vibrating diaphragm to vibrate at the same time. The isolation vibrating diaphragm, the lower vibrating diaphragm, the framework and the basin stand jointly divide the accommodating space into a lower front cavity used for sounding of the lower vibrating diaphragm and a rear cavity used for sharing of the upper vibrating diaphragm and the lower vibrating diaphragm. The frame is provided with a sounding hole for communicating the lower front cavity with the outside. 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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