Title:
SOUND PRODUCING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/168937
Kind Code:
A1
Abstract:
The present invention provides a sound producing device, comprising a basket, and a vibration system and a magnetic circuit system having a magnetic gap respectively fixed to the basket. The vibration system comprises a diaphragm fixed to the basket and a voice coil for driving the diaphragm to vibrate and produce sound; the voice coil is inserted into the magnetic gap; the magnetic circuit system comprises a magnetic bowl fixedly connected to the basket and a magnetic steel assembly stacked in the magnetic bowl; the magnetic circuit system is provided with a pressure relief port which is communicated with the magnetic gap and the outside; a vibration gap is formed between the upper surface of one side of the magnetic steel assembly directly facing the diaphragm and the diaphragm; the magnetic steel assembly is provided with a through structure running therethrough, and the through structure is communicated with the magnetic gap and the vibration gap. Compared with the prior art, the sound producing device in the present invention is excellent in high-frequency acoustical property.
Inventors:
ZENG JIAN (CN)
CAO CHENGMING (CN)
CAO CHENGMING (CN)
Application Number:
PCT/CN2020/080102
Publication Date:
September 02, 2021
Filing Date:
March 19, 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
Foreign References:
| CN209105448U | 2019-07-12 | |||
| CN209897258U | 2020-01-03 | |||
| CN209390356U | 2019-09-13 | |||
| CN210093516U | 2020-02-18 | |||
| US20170332175A1 | 2017-11-16 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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