Title:
SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/045236
Kind Code:
A1
Abstract:
The present utility model provides a sound production device. The sound production device comprises: a frame; a first vibration system, the first vibration system comprising a first diaphragm and a first voice coil; a magnetic circuit system, the magnetic circuit system being provided with a first magnetic gap and a second magnetic gap at an interval, and the first voice coil being inserted into the first magnetic gap; a cover body, the frame, the first vibration system, the magnetic circuit system, and the cover body jointly defining a sound production inner cavity; a second vibration system, the second vibration system being located in the sound production inner cavity and comprising a second diaphragm and a second voice coil, and the second voice coil being inserted into the second magnetic gap; and a support ring and an insert, a through hole of the support ring being in communication with the sound production inner cavity, airflow generated by the vibration of the first diaphragm passing through the through hole of the support ring to push the second diaphragm, the insert being located below the second diaphragm, the insert being provided with a pressure relief hole passing through the insert, and airflow generated by the vibration of the second diaphragm being transmitted to the outside through the pressure relief hole. Compared with the related art, the sound production device of the present utility model facilitates the improvement of low-frequency performance and has a good user experience effect.
Inventors:
REN ZHANG (CN)
ZHONG ZHIWEI (CN)
ZHONG ZHIWEI (CN)
Application Number:
PCT/CN2022/120190
Publication Date:
March 07, 2024
Filing Date:
September 21, 2022
Export Citation:
Assignee:
AAC MICROTECH CHANGZHOU CO LTD (CN)
International Classes:
H04R9/06; H04R9/02
Foreign References:
| CN212812019U | 2021-03-26 | |||
| CN201699968U | 2011-01-05 | |||
| CN216391399U | 2022-04-26 | |||
| CN212324356U | 2021-01-08 | |||
| US8831270B1 | 2014-09-09 | |||
| US20090180648A1 | 2009-07-16 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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