公开(公告)号：US11265630B2

公开(公告)日：2022-03-01

申请号：US16993262

申请日：2020-08-14

Applicant: AAC Technologies Pte. Ltd.

Inventor： Zhiqiang Qiu ,  Shasha Liu

IPC: H04R1/02

Abstract: A speaker includes a frame, a vibration unit fixed to the frame, and a magnetic circuit unit fixed to the frame. The vibration unit includes a diaphragm fixed to the frame, and a coil configured to drive the diaphragm to vibrate and sound. The diaphragm includes a dome. The dome includes a first layer, a second layer and a third layer which are stacked sequentially in a direction from the coil to the diaphragm. The second layer includes a honeycomb structure. The third layer includes a body and a plurality of through holes extending through the body in a vibration direction of the diaphragm. The through holes communicate with the honey structure of the second layer form a resonance cavity.

公开(公告)号：US11665472B2

公开(公告)日：2023-05-30

申请号：US16993217

申请日：2020-08-13

Applicant: AAC Technologies Pte. Ltd.

Inventor： Zhiqiang Qiu ,  Shasha Liu

IPC: H04R5/02 ,  H04R1/28 ,  H04R1/02 ,  H04R31/00

CPC classification number: H04R1/2888 ,  H04R1/025 ,  H04R1/2811 ,  H04R31/003 ,  H04R2201/02

Abstract: A speaker box includes a housing and a speaker unit accommodated in the housing. The speaker unit includes a diaphragm configured to vibrate and sound. The diaphragm is spaced from the housing to form a front sound cavity therebetween. The speaker box further includes a sound transmitting channel communicating the front sound cavity with outside. The front sound cavity and the sound transmitting channel cooperatively form a front cavity of the speaker box. A sound absorption layer is disposed at a portion of the housing facing the front cavity. The sound absorption layer includes a micro-porous structure. When the sound wave passes through the front cavity, the sound absorption layer is capable of absorbing the resonance vibration of the front cavity in high frequency, thus suppressing the amplification of the sound distortion due to the resonance vibration of the front cavity and improving the acoustic performance of the speaker box.