Title:
SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/114210
Kind Code:
A1
Abstract:
Disclosed is a sound production device, comprising a basket frame, and a vibration system and a magnetic circuit system separately fixed to the basket frame, the magnetic circuit system being used for driving the vibration system to vibrate to produce sound, wherein the vibration system comprises a vibrating diaphragm fixed to the basket frame and used for vibration to produce sound; the magnetic circuit system comprises main magnetic steel and auxiliary magnetic steel arranged at intervals to form a magnetic gap, and a magnet yoke fixed to both the main magnetic steel and the auxiliary magnetic steel; the auxiliary magnetic steel is arranged on the periphery of the main magnetic steel in a surrounding manner; the auxiliary magnetic steel comprises an auxiliary magnetic steel body fixed to the magnet yoke, and a positioning part protruding and extending from the auxiliary magnetic steel body towards the vibrating diaphragm; and the positioning part is fixed to the basket frame. Compared with the related art, the sound production device of the present invention has a good acoustic performance.
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Inventors:
SONG WEI (CN)
ZHANG FAN (CN)
ZHANG FAN (CN)
Application Number:
PCT/CN2019/125074
Publication Date:
June 17, 2021
Filing Date:
December 13, 2019
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:
| CN208015991U | 2018-10-26 | |||
| CN204539459U | 2015-08-05 | |||
| CN209314078U | 2019-08-27 | |||
| CN202551325U | 2012-11-21 | |||
| CN110166902A | 2019-08-23 | |||
| US20170347199A1 | 2017-11-30 |
Attorney, Agent or Firm:
GUANGDONG GUANGHE LAW FIRM (CN)
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