Title:
AUXILIARY DIAPHRAGM AND SOUND-PRODUCING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/068014
Kind Code:
A1
Abstract:
The present invention provides an auxiliary diaphragm, which extends from a starting end to a tail end in a bending manner, and comprises a first fixing portion, a second fixing portion, and a folding ring portion; in an orthographic projection of the auxiliary diaphragm along a vibration direction thereof, at the starting end and/or the tail end, the folding ring portion is recessed inward relative to the first fixing portion and the second fixing portion located at the same end, a segment in which the folding ring portion is connected to the first fixing portion is in a curve shape and is defined as a first curve, and a segment in which the folding ring portion is connected to the second fixing portion is in a curve shape and is defined as a second curve; and an angle formed between a tangent line of the first curve at a position connected to the first fixing portion and a connection plane of the folding ring portion and the first fixing portion is an acute angle, and an angle formed between a tangent line of the second curve at a position connected to the second fixing portion and a connection plane of the folding ring portion and the second fixing portion is an acute angle. The present invention further provides a sound-producing device using the auxiliary diaphragm. Compared with the related art, the auxiliary diaphragm and the sound-producing device of the present invention have better reliability.
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Inventors:
ZHANG CHAO (CN)
Application Number:
PCT/CN2020/129792
Publication Date:
April 07, 2022
Filing Date:
November 18, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC MICROTECH CHANGZHOU CO LTD (CN)
AAC MICROTECH CHANGZHOU CO LTD (CN)
International Classes:
H04R7/12
Foreign References:
| CN211019214U | 2020-07-14 | |||
| CN211019210U | 2020-07-14 | |||
| CN210899583U | 2020-06-30 | |||
| JP2008048300A | 2008-02-28 | |||
| CN207010972U | 2018-02-13 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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