Title:
MINIATURE LOUDSPEAKER
Document Type and Number:
WIPO Patent Application WO/2021/164087
Kind Code:
A1
Abstract:
The present invention provides a miniature loudspeaker, comprising a substrate, a piston and connecting rod assembly, a driving device, a first charge injection device, and a second charge injection device. An accommodating cavity penetrates through the substrate in the thickness direction thereof. The piston and connecting rod assembly is accommodated in the accommodating cavity, and the piston and connecting rod assembly is spaced apart and insulated from the substrate. The driving device fixedly supports the piston and connecting rod assembly and the substrate, and the driving device is separately insulated from the piston and connecting rod assembly and the substrate. The driving device is used for driving the piston and connecting rod assembly to vibrate in the thickness direction of the substrate to produce sound. The first charge injection device is connected to the piston and connecting rod assembly to inject charges into the piston and connecting rod assembly. The second charge injection device is connected to the substrate to inject charges into the substrate. The electric polarity of the charges of the substrate is the same as that of the charges of the piston and connecting rod assembly, so as to generate electrostatic repulsion between the substrate and the piston and connecting rod assembly. Compared with the related art, the miniature loudspeaker of the present invention has high reliability, long service life, and excellent acoustic performance.
Inventors:
CHENG SHIYANG (CN)
ZHU GUO (CN)
DAN QIANG (CN)
LI YANG (CN)
ZHU GUO (CN)
DAN QIANG (CN)
LI YANG (CN)
Application Number:
PCT/CN2020/080108
Publication Date:
August 26, 2021
Filing Date:
March 19, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R19/00; H04R19/02
Foreign References:
| CN102006540A | 2011-04-06 | |||
| CN106454660A | 2017-02-22 | |||
| CN109905824A | 2019-06-18 | |||
| US20070154036A1 | 2007-07-05 | |||
| US20120230524A1 | 2012-09-13 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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