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:
Jun. 19, 2023
Aac Microtech (Changzhou) Co., Ltd., Jiangsu, CN;
Bo Xiao, Changzhou, CN;
Ronglin Linghu, Changzhou, CN;
AAC Microtech (Changzhou) Co., Ltd., Changzhou, CN;
Abstract
A headphone includes a housing and a speaker device. The speaker device includes a woofer and a tweeter. The woofer includes a first frame, a first magnetic circuit unit, and a first vibration unit. The tweeter includes a second frame, a second magnetic circuit unit, and a second vibration unit. The first magnetic circuit unit includes an auxiliary magnet close to the second vibration unit. The second magnetic circuit unit includes a central magnet fixed to the second frame and side magnets located at a periphery of the central magnet. A magnetizing direction of the auxiliary magnet and a magnetizing direction of the central magnet are opposite and are arranged along a vibrating direction. Magnetizing directions of the side magnets each point to the central magnet. The speaker device can better satisfy requirements of markets on the size and sound production performance of the headphone.