Title:
SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/110433
Kind Code:
A1
Abstract:
The present application provides a sound production device, comprising a frame, a vibration system, and a magnetic circuit system for driving the vibration system to vibrate to produce a sound, wherein the vibration system and the magnetic circuit system are respectively fixed on the frame. The vibration system comprises a diaphragm fixed on the frame, and a voice coil that drives the diaphragm to vibrate, and the magnetic circuit system comprises a magnetic bowl, and a magnetic steel component that is accommodated and fixed in the magnetic bowl and is spaced apart from the magnetic bowl to form a magnetic gap therebetween, wherein the voice coil is inserted in the magnetic gap, and the magnetic bowl comprises a magnetic bowl bottom wall, a magnetic bowl side wall and a flange. The flange comprises a first section that is formed by the end of the magnetic bowl side wall close to the diaphragm bending and extending towards the frame, and a second section that extends from the first section, wherein the distance between the side of the first section close to the diaphragm and the diaphragm is smaller than the distance between the side of the second section close to the diaphragm and the diaphragm; and the side of the first section close to the second section and the second section define a fixed step, and the second section is fixed to the frame. Compared with the related art, the sound production device of the present application has better reliability.
Inventors:
JIN XIN (CN)
ZHONG ZHIWEI (CN)
ZHONG ZHIWEI (CN)
Application Number:
PCT/CN2020/139096
Publication Date:
June 02, 2022
Filing Date:
December 24, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R9/06; H04R7/18; H04R9/02; H04R9/04
Foreign References:
| CN208638633U | 2019-03-22 | |||
| CN210899600U | 2020-06-30 | |||
| CN205545903U | 2016-08-31 | |||
| US20180367889A1 | 2018-12-20 | |||
| CN201947433U | 2011-08-24 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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