US 12,407,973 B2
Earphone
Tienan Zhang, Dongguan (CN); Haibo Shan, Dongguan (CN); Yan Li, Shenzhen (CN); and Dasheng Mo, Dongguan (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Appl. No. 18/270,270
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
PCT Filed Dec. 18, 2021, PCT No. PCT/CN2021/139404
§ 371(c)(1), (2) Date Jun. 29, 2023,
PCT Pub. No. WO2022/143234, PCT Pub. Date Jul. 7, 2022.
Claims priority of application No. 202011612556.8 (CN), filed on Dec. 30, 2020.
Prior Publication US 2024/0107221 A1, Mar. 28, 2024
Int. Cl. H04R 1/10 (2006.01); H04R 1/02 (2006.01)
CPC H04R 1/1083 (2013.01) [H04R 1/023 (2013.01); H04R 1/1016 (2013.01); H04R 1/1075 (2013.01); H04R 2400/11 (2013.01); H04R 2460/01 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An earphone, comprising a housing, a loudspeaker, and a noise cancellation microphone, wherein:
the housing comprises an internal space, a communication surface for connecting the internal space and an outside world, and a sound pickup channel;
the noise cancellation microphone is connected to the communication surface by the sound pickup channel;
the loudspeaker is disposed in the internal space, the internal space comprises a front cavity, and the loudspeaker is connected to the communication surface by the front cavity;
the housing comprises an outer housing and a frame, the housing is provided with the internal space and a communication hole, and the frame is provided with the communication surface facing the communication hole;
the communication surface comprises a sound-emitting hole and a sound pickup hole, the sound-emitting hole and the sound pickup hole are isolated from each other, and the sound-emitting hole is connected to the front cavity;
the sound pickup channel is disposed on the frame, the sound pickup channel forms a radio reception port on the communication surface and forms a sound reception hole at a position of the frame, and the sound reception hole is connected to a sound reception end of the noise cancellation microphone; and,
the sound pickup channel and the front cavity are isolated from each other through the frame.