Title:
SOUND GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/067991
Kind Code:
A1
Abstract:
Provided in the present utility model is a sound generation device, comprising a cone frame, and a vibration system and a magnetic circuit system which are respectively fixed on the cone frame, wherein the magnetic circuit system drives the vibration system to vibrate and generate sound; the vibration system comprises a diaphragm and a voice coil driving the diaphragm to vibrate and generate sound; the cone frame is provided with a plurality of notches which are spaced apart and formed by means of being recessed from a side close to the magnetic circuit system in the direction away from the magnetic circuit system; and the diaphragm comprises: a vibration portion, which is in an annular shape; an inner rim, which is bent and extends from an inner periphery of the vibration portion; an outer rim, which is bent and extends from an outer periphery of the vibration portion; a first fixing portion, which is bent and extends from a side of the outer rim away from the vibration portion, along an outer side of the cone frame; and a plurality of protrusions, which are formed and protrude from a side of the first fixing portion away from the outer rim in a manner corresponding to the plurality of notches. A side of the inner rim away from the vibration portion is fixed to the magnetic circuit system, the first fixing portion is fixedly attached to an outer side of the cone frame, and each of the protrusions is correspondingly accommodated in each of the notches. Compared with the related art, the sound generation device in the present utility model has a better reliability.
Inventors:
SONG WEI (CN)
XIAO BO (CN)
LINGHU RONGLIN (CN)
KONG CHENLIANG (CN)
ZHANG TONG (CN)
XIAO BO (CN)
LINGHU RONGLIN (CN)
KONG CHENLIANG (CN)
ZHANG TONG (CN)
Application Number:
PCT/CN2020/128318
Publication Date:
April 07, 2022
Filing Date:
November 12, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R7/18
Domestic Patent References:
| WO2019164174A1 | 2019-08-29 |
Foreign References:
| CN208924470U | 2019-05-31 | |||
| CN205040017U | 2016-02-17 | |||
| CN111436015A | 2020-07-21 | |||
| CN108632729A | 2018-10-09 | |||
| CN205545903U | 2016-08-31 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
Download PDF: