公开(公告)号：US11317218B2

公开(公告)日：2022-04-26

申请号：US16975772

申请日：2018-12-25

Applicant: Goertek Inc.

Inventor： Guodong Zhao ,  Peijun Li ,  Yaqian Ji ,  Zhilei Han

IPC: H04R15/02 ,  H04R9/02 ,  H04R9/06 ,  H04R9/18

Abstract: A sound generator comprises a shell, a vibration system and a magnetic circuit system, wherein the shell sequentially accommodates and fixes the vibration system and the magnetic circuit system from top to bottom; the magnetic circuit system comprises a magnetic conductive yoke, and a central magnetic circuit portion and a side magnetic circuit portion that are mounted on an upper surface of the magnetic conductive yoke; a magnetic gap is formed between the central magnetic circuit portion and the side magnetic circuit portion; and at least one of the central magnetic circuit portion and the side magnetic circuit portion is provided with a permanent magnet; the magnetic circuit system is provided with a rear sound hole; a rear cavity in communication with the rear sound hole is provided directly below the magnetic circuit system.

公开(公告)号：US20200351592A1

公开(公告)日：2020-11-05

申请号：US16961357

申请日：2018-12-24

Applicant: Goertek Inc.

Inventor： Guodong Zhao ,  Zedong Zheng ,  Peijun Li ,  Yaqian Ji

IPC: H04R9/06 ,  H04R9/02

Abstract: An embodiment of the present invention provides a sound generating device which comprises a housing, wherein a sound generating unit is mounted in the housing, a closed rear cavity is formed between the sound generating unit and the housing, and the sound generating unit is provided with a rear sound hole in communication with the rear cavity, wherein the sound generating unit comprises a magnetic circuit system, an expandable-capacity cavity being provided on the magnetic circuit system, and the expandable-capacity cavity acting as part of the rear cavity to increase a volume of the rear cavity.

公开(公告)号：US11223905B2

公开(公告)日：2022-01-11

申请号：US16975254

申请日：2018-12-25

Applicant: Goertek Inc.

Inventor： Guodong Zhao ,  Peijun Li ,  Yaqian Ji ,  Zhilei Han

IPC: H04R9/02 ,  H04R9/04 ,  H04R9/06

Abstract: A sound generator comprises a shell, a vibration system and a magnetic circuit system sequentially accommodated and fixed at a first end of the shell from top to bottom; the magnetic circuit system is provided with a rear sound hole; the shell comprises a first portion corresponding to the vibration system and the magnetic circuit system, and a second portion integrally extending downward from the first portion beyond a bottom surface of the magnetic circuit system. A second end portion of the shell is integrally provided with a shell bottom wall or separately mounted with a lower cover plate; and a rear cavity in communication with the rear sound hole is formed.

公开(公告)号：US11178494B2

公开(公告)日：2021-11-16

申请号：US16961357

申请日：2018-12-24

Applicant: Goertek Inc.

Inventor： Guodong Zhao ,  Zedong Zheng ,  Peijun Li ,  Yaqian Ji

IPC: H04R9/06 ,  H04R9/02

Abstract: An embodiment of the present invention provides a sound generating device which comprises a housing, wherein a sound generating unit is mounted in the housing, a closed rear cavity is formed between the sound generating unit and the housing, and the sound generating unit is provided with a rear sound hole in communication with the rear cavity, wherein the sound generating unit comprises a magnetic circuit system, an expandable-capacity cavity being provided on the magnetic circuit system, and the expandable-capacity cavity acting as part of the rear cavity to increase a volume of the rear cavity.

公开(公告)号：US20200382875A1

公开(公告)日：2020-12-03

申请号：US16961463

申请日：2018-12-24

Applicant: Goertek Inc.

Inventor： Guodong Zhao ,  Zedong Zheng ,  Peijun Li ,  Yaqian Ji

IPC: H04R9/02 ,  H04R9/06

Abstract: A sound generator, which comprises: a housing, a vibration system and a magnetic circuit system. The vibration system and the magnetic circuit system are sequentially accommodated and fixed at a first end of the housing from top to bottom; the magnetic circuit system is provided with a rear sound hole; the housing comprises a first portion corresponding to the vibration system and the magnetic circuit system, and a second portion integrally extending downward from the first portion beyond a bottom surface of the magnetic circuit system; a second end portion of the housing is integrally provided with a housing bottom wall or separately mounted with a lower cover plate; and a rear cavity which is in communication with the rear sound hole is formed between the second portion of the housing, the bottom surface of the magnetic circuit system, and the housing bottom wall or the lower cover plate.