公开(公告)号：US10986440B2

公开(公告)日：2021-04-20

申请号：US16621180

申请日：2019-06-25

Applicant: Goertek Inc.

Inventor： Caiyun Hu ,  Hongmei Wang ,  Xiaoli Zhao ,  Kaibo Xing ,  Huijin Chen

IPC: H04R1/10 ,  H04R1/28

Abstract: An earbud comprises: a casing in which a sound cavity is provided; a speaker disposed in the sound cavity and dividing the sound cavity into a front sound cavity and a rear sound cavity; and an acoustic structure located in the rear sound cavity. The acoustic structure comprises a first sound guiding wall and a cover plate, the first sound guiding wall is attached to a bottom surface of the rear sound cavity and is configured to, together with at least a part of an inner wall of the casing, constitutes a sound guiding groove, and the cover plate is mounted at an upper opening part of the sound guiding groove, such that the sound guiding groove forms a bass pipe which communicates from the rear sound cavity to at least one aperture of the casing.