Title:
SOUNDER
Document Type and Number:
WIPO Patent Application WO/2019/137191
Kind Code:
A1
Abstract:
An embodiment of the present invention provides a sounder, comprising a housing, a vibration system, and a magnetic circuit system; a first end of the housing accommodates and fixes the vibration system and the magnetic circuit system sequentially from top to bottom; the magnetic circuit system is provided with a rear sound hole; the housing comprises a first portion corresponding to the vibration system and the magnetic circuit system, and a second portion integrally extending downwardly from the first portion beyond a bottom surface of the magnetic circuit system; and a second end portion of the housing is integrally provided with a bottom housing wall or separately mounted with a lower cover plate, and a rear cavity which is in communication with the rear sound hole is formed between the second portion of the housing, the bottom surface of the magnetic circuit system, and the bottom housing wall or the lower cover plate. The technical solution provided in the present invention facilitates the miniaturization of products.
Inventors:
ZHAO GUODONG (CN)
ZHENG ZEDONG (CN)
LI PEIJUN (CN)
JI YAQIAN (CN)
ZHENG ZEDONG (CN)
LI PEIJUN (CN)
JI YAQIAN (CN)
Application Number:
PCT/CN2018/123194
Publication Date:
July 18, 2019
Filing Date:
December 24, 2018
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/06
Foreign References:
| CN207835801U | 2018-09-07 | |||
| CN203574814U | 2014-04-30 | |||
| CN202799131U | 2013-03-13 | |||
| CN106131757A | 2016-11-16 | |||
| CN102413405A | 2012-04-11 | |||
| CN203747999U | 2014-07-30 |
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