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:
Sep. 02, 2025
Filed:
May. 26, 2023
Aac Microtech (Changzhou) Co., Ltd., Jiangsu, CN;
Zhang Ren, Changzhou, CN;
Zhiwei Zhong, Changzhou, CN;
AAC Microtech (Changzhou) Co., Ltd., Changzhou, CN;
Abstract
The present disclosure discloses a coaxial earphone core including a magnet system, which includes a first yoke, a first magnet, a second magnet surrounding the first magnet to form a first magnetic gap, a second yoke fixed to the first magnet, and an annular third magnet fixed to the second yoke; the second yoke includes an extending wall bending and extending into the third magnet; the extending wall is spaced apart from the third magnet to form a second magnetic gap; the first coil and the second coil are inserted into the first magnetic gap and second magnetic gap, respectively; the first sound unit surrounds the second sound unit, the second diaphragm is located on one side of the first diaphragm facing the magnet system. The coaxial earphone core has better sound quality.