Title:
SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/062122
Kind Code:
A1
Abstract:
The present invention provides a sound production device, comprising a frame, and a vibration system and a magnetic circuit system which are respectively fixed to the frame, the magnetic circuit system driving the vibration system to vibrate and produce sound. The vibration system comprises a diaphragm, and a voice coil driving the diaphragm to vibrate and produce sound; the diaphragm comprises an annular vibration portion, an outer corrugated ring which is bent and extends from the outer periphery of the vibration portion, and an inner corrugated ring which is bent and extends from the inner periphery of the vibration portion; the side of the outer corrugated ring distant from the vibration portion is fixed to the frame; the side of the inner corrugated ring distant from the vibration portion is fixed to the magnetic circuit system; the outer corrugated ring or the inner corrugated ring comprises a first corrugated ring which is bent and extends from the vibration portion, and a second corrugated ring which is bent and extends from the side of the first corrugated ring distant from the vibration portion; and the second corrugated ring is fixed to the frame or the magnetic circuit system. Compared with the related art, the sound production device of the present invention has better acoustic performance.
Inventors:
LINGHU RONGLIN (CN)
ZHANG TONG (CN)
KONG CHENLIANG (CN)
XIAO BO (CN)
ZHANG TONG (CN)
KONG CHENLIANG (CN)
XIAO BO (CN)
Application Number:
PCT/CN2020/128778
Publication Date:
March 31, 2022
Filing Date:
November 13, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC MICROTECH CHANGZHOU CO LTD (CN)
AAC MICROTECH CHANGZHOU CO LTD (CN)
International Classes:
H04R7/14; H04R7/18; H04R9/02
Foreign References:
| CN205793289U | 2016-12-07 | |||
| CN209358773U | 2019-09-06 | |||
| CN205249470U | 2016-05-18 | |||
| CN111343544A | 2020-06-26 | |||
| US20200196049A1 | 2020-06-18 | |||
| CN111641900A | 2020-09-08 | |||
| CN106101941A | 2016-11-09 | |||
| CN106817658A | 2017-06-09 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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