DIAPHRAGM AND SOUND GENERATION DEVICE

WIPO Patent Application WO/2022/067982

A1

Provided in the present utility model is a diaphragm, comprising a vibration portion located in the middle position thereof, a rim portion surrounding the vibration portion and connected to the vibration portion, and a fixing portion bent and extending from the side of the rim portion away from the vibration portion. A first pattern group and a second pattern group are sequentially arranged on the rim portion from a side close to the vibration portion to a side away from the vibration portion; the first pattern group comprises a plurality of first patterns which are circumferentially distributed at intervals along an inner side of the rim portion, and each first pattern extends from a central portion of the rim portion to the vibration portion in a direction away from the fixing portion, and is connected to the vibration portion; and the second pattern group comprises a plurality of second patterns which are circumferentially distributed at intervals along an outer side of the rim portion, and each second pattern extends in a direction from the central portion of the rim portion to the fixing portion. Compared with the related art, the diaphragm in the present utility model is uniform in terms of stress distribution, low in high-order harmonic frequency distortion and high in reliability.

WU MEIWEI (CN)
CHEN ZHIZHU (CN)

PCT/CN2020/128072

April 07, 2022

November 11, 2020

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AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)

H04R9/06; H04R7/14

CN206908822U	2018-01-19
CN208638638U	2019-03-22
CN207266276U	2018-04-20
US20120002838A1	2012-01-05

SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)

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