Patent ID: 11483660

Abstract:
The present invention discloses a sound production apparatus, comprising a first vibration system, a second vibration system and a magnetic circuit system, wherein the first vibration system comprises a first diaphragm and a voice coil arranged on a side, facing the magnetic circuit system, of the first diaphragm; the second vibration system comprises a second diaphragm arranged opposite to the first diaphragm, and a middle position of the second diaphragm is combined with a reinforcement portion; the reinforcement portion is provided with an extension portion extending along a direction close to the first diaphragm, and a position, corresponding to the extension portion, in the magnetic circuit system is provided with an avoidance portion; and the extension portion is capable of passing through the avoidance portion, and is fixed to the first diaphragm. The sound production apparatus of the present invention is configured with two sets of vibration systems but only adopts one set of a voice coil and magnetic circuit system, so as to realize a structure for synchronized bidirectional sound production, occupying a small volume, facilitating its wide application to portable terminals.