The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2025
Filed:
Jul. 20, 2022
Aac Microtech (Changzhou) Co., Ltd., Changzhou, CN;
Zhang Ren, Shenzhen, CN;
Zhiwei Zhong, Shenzhen, CN;
AAC Microtech (Changzhou) Co., Ltd., Changzhou, CN;
Abstract
An earphone core includes a frame, a vibration system, and a magnetic circuit system. The vibration system includes a vibrating diaphragm and a voice coil. The magnetic circuit system includes an inner magnetic gap and an outer magnetic gap. The vibrating diaphragm includes a first vibrating diaphragm and a second vibrating diaphragm. An outer periphery of the first vibrating diaphragm and an inner periphery of the second vibrating diaphragm are both fixed to the magnetic circuit system. The outer periphery of the second vibrating diaphragm is fixed to the frame. The voice coil includes a first voice coil and a second voice coil. The earphone core further includes a front cover. The front cover is fixed to the frame. The present disclosure further provides earphones. The earphone core and an earphone including the earphone core well broaden a frequency band.