Sound device

Abstract

The invention provides a sound-generating device, which includes a basin frame, a vibration system and a magnetic circuit system. The vibration system includes: an upper diaphragm, which is fixed to the basin frame and together forms a storage space, and the upper diaphragm is far away from the magnetic circuit system. One side of the lower diaphragm communicates with the outside world and serves as the upper front chamber where the upper diaphragm emits sound; the lower diaphragm is ring-shaped, and the outer peripheral side of the lower diaphragm is fixed to the frame; the upper frame is respectively connected to the voice coil and the upper Diaphragm connection, the lower skeleton is connected with the lower diaphragm; the ring-shaped isolation diaphragm, the outer peripheral side of the isolation diaphragm is connected with the basin frame, and the inner peripheral side is connected with the upper skeleton and the lower skeleton, the lower diaphragm, the lower skeleton, The isolation diaphragm and the basin frame jointly divide the storage space into a lower front chamber for sounding of the lower diaphragm and a rear chamber shared by the lower diaphragm and the upper diaphragm; The anterior cavity communicates with the outside world. Compared with the related art, the sound emitting device of the present invention has higher acoustic loudness 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] 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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