Title:
SPEAKER AND AUDIO DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/103070
Kind Code:
A1
Abstract:
Provided in the present application are a speaker and an audio device. The speaker comprises a basket, a rear cover, an audio diaphragm, a vibration system, and a magnetic circuit system. The vibration system comprises a vibration diaphragm. The magnetic circuit system comprises a magnetic bowl. The vibration diaphragm, the magnetic bowl, and the basket are joined to form an inner cavity. The rear cover is arranged at the side of the magnetic bowl away from the vibration diaphragm and is joined with the magnetic bowl to form a rear cavity, the rear cavity being in communication with the inner cavity. The rear cover is provided with a first through hole. The audio diaphragm is fixed on the rear cover and covers the first through hole. As such, with the inner cavity being in communication with the rear cavity, the vibration diaphragm vibrates to allow the compression of air in the inner cavity to affect the flow of air in the rear cavity; because the audio diaphragm is a flexible element, a change in the air of the rear cavity causes the audio diaphragm to vibrate, thereby increasing the volume of the rear cavity and reducing F0 (the lowest resonance frequency), thus increasing the low-frequency sensitivity of the speaker, and effectively reducing power consumption. The audio device provided in the present application employs the described speaker and thus is provided with all of the beneficial effects of the speaker.
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Inventors:
XIAO BO (CN)
LINGHU RONGLIN (CN)
LINGHU RONGLIN (CN)
Application Number:
PCT/CN2019/122970
Publication Date:
June 03, 2021
Filing Date:
December 04, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R9/02; H04R9/06
Foreign References:
| CN208836403U | 2019-05-07 | |||
| CN104185102A | 2014-12-03 | |||
| CN209390330U | 2019-09-13 | |||
| US5497427A | 1996-03-05 | |||
| US4008374A | 1977-02-15 |
Attorney, Agent or Firm:
SHENZHEN CIPRUN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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