Title:
SOUND GENERATING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/107617
Kind Code:
A1
Abstract:
Disclosed is a sound generating apparatus. The apparatus comprises: a magnetic circuit system that is configured to be used for forming a magnetic field; and a vibration system, wherein the vibration system comprises a voice coil, a vibration diaphragm, and a reinforcing layer; one end of the voice coil is connected with the center part of the vibration diaphragm, and the other end is located within the magnetic field; the reinforcing layer is provided at the center part; the reinforcing layer comprises a carbon fiber prepreg layer; the orientation angle of the graphite nanocrystallite of the carbon fiber in the carbon fiber prepreg layer is less than or equal to 30 degrees; and the orientation angle is an included angle between the graphite nanocrystallite and a fiber axis.
Inventors:
LI MEILING (CN)
LING FENGGUANG (CN)
ZHENG ZEDONG (CN)
ZHANG CHENGFEI (CN)
LI CHUN (CN)
LING FENGGUANG (CN)
ZHENG ZEDONG (CN)
ZHANG CHENGFEI (CN)
LI CHUN (CN)
Application Number:
PCT/CN2018/124936
Publication Date:
June 04, 2020
Filing Date:
December 28, 2018
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/06; H04R9/02
Foreign References:
| CN207968945U | 2018-10-12 | |||
| CN107257534A | 2017-10-17 | |||
| CN208029081U | 2018-10-30 | |||
| CN206433152U | 2017-08-22 | |||
| EP1398992A1 | 2004-03-17 |
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