公开(公告)号：US11477577B2

公开(公告)日：2022-10-18

申请号：US17256607

申请日：2018-12-14

Applicant: GOERTEK INC.

Inventor： Xinglong Wang ,  Lianshan Ge ,  Chunfa Liu

IPC: H04R9/02 ,  H04R9/06

Abstract: A sounding device includes a first vibrating system, a second vibrating system and a magnetic circuit system, where the first vibrating system includes a first vibrating diaphragm and a voice coil arranged inside the first vibrating diaphragm, and the first vibrating diaphragm includes a first central portion; the second vibrating system includes a second vibrating diaphragm disposed opposite to the first vibrating diaphragm, and the second vibrating diaphragm includes a second central portion; and the magnetic circuit system is arranged between the first vibrating diaphragm and the second vibrating diaphragm, and the voice coil is accommodated in a magnetic gap of the magnetic circuit system; the magnetic circuit system defines an avoid hole; and at least one of the first central portion and the second central portion is extended into the avoid hole to fixedly connect the first central portion and the second central portion.