US Patent No. 10,375,480

LOUDSPEAKER UNIT


Patent No. 10,375,480
Issue Date August 06, 2019
Title Loudspeaker Unit
Inventorship Kuanhong Hsieh, Shenzhen (CN)
Bocheng You, Shenzhen (CN)
Shihchia Chiu, Shenzhen (CN)
Assignee 1MORE INC., Shenzhen, Guangdong Province (CN)

Claim of US Patent No. 10,375,480

1. A loudspeaker unit, comprising: a housing, a magnetic assembly, a diaphragm, a first voice coil, a second voice coil and an elastic element; wherein the magnetic assembly is disposed in the housing, the diaphragm is disposed on the housing; the first voice coil is connected to the diaphragm; the magnetic assembly is connected to the housing by the elastic element; the magnetic assembly vibrates along with the elastic element with respect to the housing when the elastic element vibrates; wherein an annular gap and another annular gap are formed on a side of the magnetic assembly facing the diaphragm, one end of the first voice coil is connected to the diaphragm, the other end of the first voice coil extends into the annular gap; one end of the second voice coil is connected to the housing, the other end of the second voice coil extends into the another annular gap, wherein the housing is provided with a limiting structure configured to limit a vibration amplitude of the elastic element and/or the magnetic assembly with respect to the housing.