Title:
LOUDSPEAKER
Document Type and Number:
WIPO Patent Application WO/2021/174569
Kind Code:
A1
Abstract:
The present invention provides a loudspeaker capable of increasing the effective vibration area. The loudspeaker comprises a housing, a vibration system and a magnetic circuit system. The vibration system comprises vibrating diaphragms, a voice coil for driving the vibrating diaphragms to vibrate for sound production, and a framework. The vibrating diaphragms comprise an upper vibrating diaphragm and a lower vibrating diaphragm that are oppositely arranged at an interval, wherein the outer edges of the upper vibrating diaphragm and the lower vibrating diaphragm are fixed on the housing, and the lower vibrating diaphragm is arranged around the magnetic circuit system; the framework comprises a connecting part connected to the upper vibrating diaphragm and a connecting frame connected to the connecting part and arranged around the magnetic circuit system; the inner edge of the lower vibrating diaphragm is fixed on the connecting frame; a clamping plate arranged around the connecting frame and fixed on the housing is arranged between the upper vibrating diaphragm and the lower vibrating diaphragm; the upper vibrating diaphragm, the lower vibrating diaphragm, the clamping plate and the connecting frame divide the internal space of the housing into an upper diaphragm front chamber for the upper vibrating diaphragm to produce sound, a lower diaphragm front chamber for the lower vibrating diaphragm to produce sound, and a rear chamber shared by the upper vibrating diaphragm and the lower vibrating diaphragm; and a first sound outlet in communication with the upper diaphragm front chamber and a second sound outlet in communication with the lower diaphragm front chamber are provided in the housing in a penetrating mode.
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Inventors:
LINGHU RONGLIN (CN)
ZHANG TONG (CN)
XIAO BO (CN)
ZHANG TONG (CN)
XIAO BO (CN)
Application Number:
PCT/CN2020/078760
Publication Date:
September 10, 2021
Filing Date:
March 11, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R9/02; H04R7/12; H04R7/20; H04R9/04; H04R9/06
Foreign References:
| CN209201325U | 2019-08-02 | |||
| CN203301728U | 2013-11-20 | |||
| US6219431B1 | 2001-04-17 |
Attorney, Agent or Firm:
SHENZHEN ZICHEN INTELLECTUAL PROPERTY AGENCY LIMITED (CN)
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