Title:
MINIATURE SOUND GENERATOR
Document Type and Number:
WIPO Patent Application WO/2018/205440
Kind Code:
A1
Abstract:
The present invention relates to the technical field of electroacoustic products, and provides a miniature sound generator, comprising a shell (10), and a vibration system and a magnetic circuit system which are received in the shell (10); the magnetic circuit system comprises a plate-like magnet yoke (20); a central magnet (24) and a central magnetic conductive plate (26) are sequentially provided at the center of the magnet yoke (20); a side magnet (22) and a side magnetic conductive plate (28) are sequentially provided at the edge portion of the magnet yoke (20); the magnet yoke (20) is fixed at the lower portion of the shell (10); the corner of the magnet yoke (20) is provided with a positioning gap (202) formed by two straight edges perpendicular to each other; the lower end of the shell (10) is provided with a positioning rim (120) matching the positioning gasp (202) and also formed by two straight edges perpendicular to each other; transition gaps (204) recessed inward are provided at a position where the two straight edges of the positioning gap (202) are connected; a right angle formed by the two straight edges of the positioning rim (120) is inserted in the transition gap (204); there are at least two transition gaps (204) diagonally provided. The miniature sound generator has good concentricity, high acoustic performance, good stability, and long service life.
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Inventors:
GUO XIANG (CN)
LIU HUAWEI (CN)
LIU HUAWEI (CN)
Application Number:
PCT/CN2017/096851
Publication Date:
November 15, 2018
Filing Date:
August 10, 2017
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/06
Foreign References:
| CN206807757U | 2017-12-26 | |||
| CN202551333U | 2012-11-21 | |||
| CN103269470A | 2013-08-28 | |||
| CN202050537U | 2011-11-23 | |||
| CN205864735U | 2017-01-04 | |||
| JP2005323096A | 2005-11-17 |
Attorney, Agent or Firm:
BEIJING LONGAN LAW FIRM (CN)
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