Title:
SOUND GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/068013
Kind Code:
A1
Abstract:
Provided in the present utility model is a sound generation device, comprising a cone frame, a vibration system and a magnetic circuit system. The vibration system comprises a diaphragm, a voice coil, a framework for connecting the voice coil to the diaphragm, and an elastic member, which is fixed on the cone frame and is connected to one end of the framework away from the diaphragm. The elastic member comprises a first elastic member and a second elastic member; the first elastic member and the second elastic member both comprise an elastic member body; the first elastic member further comprises a bonding pad portion extending from the elastic member body towards the voice coil; and the bonding pad portion is electrically connected to the voice coil. The vibrating diaphragm comprises a vibration portion, a rim portion, a fixing portion and a counterweight portion extending from a side of the vibration portion corresponding to the second elastic member; the fixing portion is fixed on the cone frame; and the counterweight portion is attached to the diaphragm and/or the framework, such that a side of the vibration system corresponding to the first elastic member, and a side of the vibration system corresponding to the second elastic member are balanced in terms of mass. Compared with the related art, the diaphragm of the sound generation device has a good symmetry and good acoustic performance.
Inventors:
SONG WEI (CN)
JIN XIN (CN)
TAO WEIWEI (CN)
WANG QI (CN)
JIN XIN (CN)
TAO WEIWEI (CN)
WANG QI (CN)
Application Number:
PCT/CN2020/129790
Publication Date:
April 07, 2022
Filing Date:
November 18, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R9/04
Foreign References:
| CN211531292U | 2020-09-18 | |||
| CN107396253A | 2017-11-24 | |||
| CN105979445A | 2016-09-28 | |||
| CN209659599U | 2019-11-19 | |||
| US20180220238A1 | 2018-08-02 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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