Title:
MICROACOUSTIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/058852
Kind Code:
A1
Abstract:
The invention relates to the technical field of electroacoustic products. Disclosed is a microacoustic device comprising a housing. The housing receives a vibration system and a magnetic circuit system therein. The magnetic circuit system comprises a magnet yoke. A side magnet and a side magnetic conductive plate are sequentially fixed to an edge of the magnet yoke. A magnetic flux leakage-resistant component is provided at an outer side of the side magnet. The magnetic flux leakage-resistant component is made of a magnetic conductive material. The microacoustic device of the invention solves a technical problem in which a severe magnetic flux leakage occurs at a side surface of a prior art microacoustic device. In the microacoustic device of the invention, only a small amount of magnetic flux leaks from a side surface thereof, and thus causes no interference on other components of a portable electronic device. Moreover, the invention has good water resistance, high reliability and long service life.
Inventors:
ZHENG ZEDONG (CN)
XU CHAO (CN)
LI PEIJUN (CN)
XU CHAO (CN)
LI PEIJUN (CN)
Application Number:
PCT/CN2017/070155
Publication Date:
April 05, 2018
Filing Date:
January 04, 2017
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/02; H04R9/06
Foreign References:
| CN103369436A | 2013-10-23 | |||
| CN202374439U | 2012-08-08 | |||
| CN102595262A | 2012-07-18 | |||
| CN202488688U | 2012-10-10 | |||
| CN205179350U | 2016-04-20 | |||
| US20080181446A1 | 2008-07-31 |
Attorney, Agent or Firm:
BEIJING GRANDER IP LAW FIRM (CN)
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