SOUND PRODUCTION APPARATUS AND ELECTRONIC DEVICE

WIPO Patent Application WO/2019/184477

A1

Disclosed is a sound production apparatus, comprising a housing and a sound generator. A rear cavity is formed between the housing and the sound generator; the housing is provided with an opening communicated with an outer part of the rear cavity and the sound generator; the periphery of the opening is surrounded by an opening wall, and the top surface of the opening wall is configured to be sealingly connected to an external device to realize sealing of the rear cavity; a filling area is provided in the rear cavity, the filling area is filled with a sound-absorbing material, and the filling area is surrounded by an enclosing wall; at least a portion of the opening corresponds to the filling area, and at least a portion of the opening wall overlaps with the enclosing wall; a packaging part used for sealing the filling area is provided on the top surface of the enclosing wall; an annular elastic gasket having a sealing effect is provided on the top surface of the opening wall; at the position where the opening wall overlaps with the enclosing wall, the annular elastic gasket is pressed on the upper surface of the edge of the packaging part. Further disclosed is an electronic device comprising the sound production apparatus. The present invention can improve the filling volume of the sound-absorbing material, and improve the acoustic performance of the sound production apparatus.

ZHANG FENG (CN)
JI LIXIA (CN)

PCT/CN2018/123303

October 03, 2019

December 25, 2018

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GOERTEK INC (CN)

H04R9/06; H04R9/02

CN108377451A	2018-08-07
CN107659876A	2018-02-02
CN107333210A	2017-11-07
CN205987346U	2017-02-22
US20150172800A1	2015-06-18

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