Sound device

Abstract

The invention provides a sound-generating device, which includes a frame, a vibration system and a magnetic circuit system. The vibration system includes an upper diaphragm, a lower diaphragm, a voice coil, a skeleton and an isolation diaphragm; One side of the magnetic circuit system; the lower diaphragm is ring-shaped and set around the magnetic circuit system at intervals, the lower diaphragm and the upper diaphragm are set at intervals relative to each other, and the outer peripheral side of the lower diaphragm is fixed on the basin frame; the voice coil is connected to the upper diaphragm close to One side of the magnetic circuit system is inserted in the magnetic gap; the skeleton is ring-shaped and set around the magnetic circuit system at intervals. The skeleton is connected to the voice coil and the lower diaphragm respectively. The voice coil drives the upper diaphragm to vibrate, and at the same time drives the skeleton to drive The lower diaphragm vibrates; the isolation diaphragm is ring-shaped and is set around the magnetic circuit system at intervals. The isolation diaphragm is arranged between the upper diaphragm and the lower diaphragm at intervals. The inner peripheral side is connected with the skeleton. 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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