公开(公告)号：US11736846B2

公开(公告)日：2023-08-22

申请号：US17451588

申请日：2021-10-20

Applicant: GOERTEK INC.

Inventor： Jie Zhang ,  Zhongxu Zhao ,  Zaikang Guo

IPC: H04R25/00 ,  H04R1/10

CPC classification number: H04R1/1008 ,  H04R1/105 ,  H04R2420/07

Abstract: Disclosed is an earphone, which includes a housing defined with a first sound hole, a second sound hole, and a resonant cavity communicating the first sound hole and the second sound hole inside the housing; and a loudspeaker in the resonant cavity, having a first sound emitting surface corresponding to the first sound hole, and a second sound emitting surface facing the first sound emitting surface, where sound emitted from the second sound emitting surface pass to the second sound hole through the resonant cavity.