Title:
DIAPHRAGM AND SOUND GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/134189
Kind Code:
A1
Abstract:
Disclosed in the utility model is a diaphragm, comprising a central portion and a surrounding portion. The surrounding portion comprises a surrounding upper surface and a surrounding lower surface opposite to the surrounding upper surface. The diaphragm further comprises an upper pattern mold portion formed by protruding or recessing from the surrounding upper surface, and a lower pattern mold portion formed by protruding or recessing from the surrounding lower surface. The upper pattern mold portion comprises a plurality of upper characteristic patterns arranged at intervals along the circumferential direction of the surrounding portion, and the lower pattern mold portion comprises a plurality of lower characteristic patterns arranged at intervals along the circumferential direction of the surrounding portion. The shape of each upper characteristic pattern is the same as the that of each lower characteristic pattern. The plurality of upper characteristic patterns are respectively arranged in the manner of crossing the plurality of lower characteristic patterns along the surrounding direction of the surrounding portion. The utility model also provides a sound generation device using the membrane. Compared with the related art, the diaphragm and sound generation device of the utility model have good stability and better acoustic performance.
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Inventors:
LIANG PING (CN)
ZHAO BIN (CN)
ZHAO BIN (CN)
Application Number:
PCT/CN2019/129872
Publication Date:
July 08, 2021
Filing Date:
December 30, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R7/14
Foreign References:
| CN106231508A | 2016-12-14 | |||
| CN108900955A | 2018-11-27 | |||
| CN206923019U | 2018-01-23 | |||
| US20180367907A1 | 2018-12-20 |
Attorney, Agent or Firm:
GUANGDONG GUANGHE LAW FIRM (CN)
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