Title:
SOUND GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/067986
Kind Code:
A1
Abstract:
Provided in the present utility model is a sound generation device, which comprises a vibration system used for vibrating and generating sound and a magnetic circuit system used for driving the vibration system to vibrate and generate sound and provided with a magnetic gap. The vibration system comprises a diaphragm, a voice coil inserted in the magnetic gap and driving the diaphragm to vibrate and generate sound, and a framework for connecting the voice coil and the diaphragm. The framework comprises a framework body and a framework connecting arm bent and extending from the framework body. The framework connecting arm comprises a protrusion portion formed by means of protruding from an end of the framework body away from the diaphragm, to approach the magnetic circuit system; a first extension portion bent and extending from an end of the protrusion portion away from the framework body, to the diaphragm along an outer side of the voice coil; and a second extension portion bent and extending from an end of the first extension portion away from the protrusion portion, wherein the second extension portion fixedly abuts against a side of the voice coil close to the diaphragm, and the protrusion portion and the first extension portion both fixedly abut against the side of the voice coil close to the framework. Compared with the related art, the sound generation device in the present utility model has better reliability.
Inventors:
SONG WEI (CN)
LINGHU RONGLIN (CN)
XIAO BO (CN)
KONG CHENLIANG (CN)
ZHANG TONG (CN)
LINGHU RONGLIN (CN)
XIAO BO (CN)
KONG CHENLIANG (CN)
ZHANG TONG (CN)
Application Number:
PCT/CN2020/128278
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:
H04R7/22; H04R9/04; H04R9/06
Foreign References:
| CN111641906A | 2020-09-08 | |||
| CN210641017U | 2020-05-29 | |||
| CN210899594U | 2020-06-30 | |||
| CN208112933U | 2018-11-16 | |||
| US20200213765A1 | 2020-07-02 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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