	US 12,407,977 B2
	Speaker device and headphone
Bo Xiao, Changzhou (CN); and Ronglin Linghu, Changzhou (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Jiangsu (CN)
Filed on Jun. 19, 2023, as Appl. No. 18/337,421.
Application 18/337,421 is a continuation of application No. PCT/CN2023/089519, filed on Apr. 20, 2023.
Claims priority of application No. 202320345740.3 (CN), filed on Feb. 27, 2023.
Prior Publication US 2024/0292145 A1, Aug. 29, 2024
Int. Cl. H04R 1/24 (2006.01); H04R 1/10 (2006.01); H04R 7/12 (2006.01); H04R 7/18 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01); H04R 9/06 (2006.01)

CPC H04R 1/24 (2013.01) [H04R 1/1075 (2013.01); H04R 7/127 (2013.01); H04R 7/18 (2013.01); H04R 9/025 (2013.01); H04R 9/045 (2013.01); H04R 9/063 (2013.01); H04R 2400/11 (2013.01)]

18 Claims

1. A speaker device, comprising a woofer and a tweeter arranged at a side of the woofer, wherein the woofer comprises a first frame, a first magnetic circuit unit fixed in the first frame, and a first vibration unit fixed to the first frame and spaced apart from the first magnetic circuit unit; the tweeter comprises a second frame fixed to the first magnetic circuit unit, a second magnetic circuit unit fixed in the second frame and spaced apart from the first magnetic circuit unit, and a second vibration unit fixed to the second frame and located in a spacing between the first magnetic circuit unit and the second magnetic circuit unit; the first magnetic circuit unit comprises an auxiliary magnet close to the second vibration unit; the second magnetic circuit unit comprises 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 to each other and are both arranged along a vibrating direction of the first vibration unit; and magnetizing directions of the side magnets each point to the central magnet.