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:
Mar. 24, 2026
Filed:
Nov. 28, 2023
Aac Microtech (Changzhou) Co., Ltd., Changzhou, CN;
Zhang Ren, Changzhou, CN;
Zhiwei Zhong, Changzhou, CN;
AAC Microtech (Changzhou) Co., Ltd., Changzhou, CN;
Abstract
A sound-generating device, including a cone frame, a vibration system fixed to the cone frame, and a magnetic circuit system fixed to the cone frame and configured to drive the vibration system to vibrate. The vibration system includes a diaphragm, a first voice coil, a second voice coil and a third voice coil, where the first, second and third voice coils are arranged spaced apart, and are configured to drive the diaphragm to vibrate. The diaphragm includes a first surround, a second surround and a vibration portion. The magnetic circuit system is provided with a first magnetic gap, a second magnetic gap and a third magnetic gap spaced apart. The first voice coil is insertedly suspended in the first magnetic gap. The second voice coil is insertedly suspended in the second magnetic gap. The third voice coil is insertedly suspended in the third magnetic gap.