Title:
LOUDSPEAKER AND LOUDSPEAKER BOX
Document Type and Number:
WIPO Patent Application WO/2021/000142
Kind Code:
A1
Abstract:
The present application provides a loudspeaker, comprising a basket, a vibration system for vibration sounding and a magnetic circuit system for driving the vibration of the vibration system; the magnetic circuit system comprises a secondary pole core and a magnetic bowl which are fixed to the basket, and the magnetic bowl and the basket are fitted to form an accommodation space; the secondary pole core separates the accommodation space into an upper space close to the vibration system and a lower space close to the magnetic bowl; the secondary pole core comprises an inner edge close to the accommodation space and an outer edge provided opposite to the inner edge, the outer edge is fixed to the basket, and the inner edge is recessed towards the outer edge to form a notch; and the notch enables the communication between the upper layer space and the lower layer space. The present application further provides a loudspeaker box comprising the described loudspeaker. The loudspeaker of the present application can enable the air below a first diaphragm to flow out smoothly from the notch, effectively reducing the piano noise of the loudspeaker.
Inventors:
ZHANG GUQING (CN)
Application Number:
PCT/CN2019/094042
Publication Date:
January 07, 2021
Filing Date:
June 30, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (CN)
AAC TECHNOLOGIES PTE LTD (CN)
International Classes:
H04R9/06; H04R9/02
Foreign References:
| CN204217119U | 2015-03-18 | |||
| CN205213039U | 2016-05-04 | |||
| CN203747990U | 2014-07-30 | |||
| CN109462805A | 2019-03-12 | |||
| CN208798197U | 2019-04-26 | |||
| US9674603B1 | 2017-06-06 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYUANLIHE PATENT AND TRADEMARK FIRM (GENERAL PARTNERSHIP) (CN)
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