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:
May. 28, 2024
Filed:
Feb. 21, 2020
Huawei Technologies Co., Ltd., Shenzhen, CN;
Ligang Yu, Shenzhen, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
A loudspeaker includes a first diaphragm group, a second diaphragm group, and a first voice coil, a second voice coil, and a magnetic circuit system located between the first diaphragm group and the second diaphragm group. The first diaphragm group, the second diaphragm group, the first voice coil, and the second voice coil are disposed on a same center line. The first voice coil is disposed on the first diaphragm group. The second voice coil is disposed on the second diaphragm group. A magnetic field generated by the magnetic circuit system intersects with the center line. The first voice coil is spaced opposite to the second voice coil. The first voice coil and the second voice coil are at least partially located in the magnetic field generated by the magnetic circuit system, and have opposite vibration directions. The first voice coil and the second voice coil respectively provide vibration forces for the first diaphragm group and the second diaphragm group, so that the first diaphragm group and the second diaphragm group produce sound in two opposite directions.