Title:
SOUND PRODUCING DEVICE AND EARPHONE
Document Type and Number:
WIPO Patent Application WO/2022/166383
Kind Code:
A1
Abstract:
Disclosed are a sound producing device and an earphone. The sound producing device comprises a magnet yoke, a tweeter unit and a woofer unit, wherein the magnet yoke comprises an accommodating portion comprising a side wall and a bottom wall which are connected to each other to form an accommodating space; the tweeter unit comprises a first magnetic portion, a tweeter diaphragm and a tweeter voice coil connected to the tweeter diaphragm, the first magnetic portion is placed in the accommodating space, a tweeter magnetic gap for the tweeter voice coil to insert is formed between the first magnetic portion and the side wall, and the tweeter diaphragm is a planar metal diaphragm; and the woofer unit comprises a second magnetic portion, a woofer diaphragm and a woofer voice coil connected to the woofer diaphragm, a woofer magnetic gap for the woofer voice coil to insert is formed between the second magnetic portion and the side wall, and the woofer unit and the tweeter unit are coaxially arranged. The present invention takes high-frequency and low-frequency performances into consideration, and the tweeter unit is embedded in the woofer unit, directly replacing a central magnetic circuit portion of the woofer unit, such that the occupied space of the sound producing device in the earphone is reduced while magnetic flux is provided.
Inventors:
WANG YING (CN)
GUO XIAODONG (CN)
GUO XIAODONG (CN)
Application Number:
PCT/CN2021/136331
Publication Date:
August 11, 2022
Filing Date:
December 08, 2021
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/02
Foreign References:
| CN112770235A | 2021-05-07 | |||
| CN214481176U | 2021-10-22 | |||
| CN205726386U | 2016-11-23 | |||
| CN209787376U | 2019-12-13 | |||
| CN108600896A | 2018-09-28 | |||
| CN204316715U | 2015-05-06 | |||
| US20110170736A1 | 2011-07-14 |
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