Patent ID: 9654865
Date: 2017-05-16
CPC Classifications: H04R

Claim:
1. An earphone, comprising a loudspeaker unit, an audio signal wire electrically connected to the loudspeaker unit, and an auxiliary structure for accommodating and fixing the loudspeaker unit and the audio signal wire; wherein, the auxiliary structure comprises a front cover and a housing; a front acoustic cavity is defined as a space between the front cover and the loudspeaker unit, and a rear acoustic cavity is defined as a space between the housing and the loudspeaker unit; the earphone is characterized in that, an acoustic guide channel capable of enhancing low-frequency performance of the earphone is disposed on one side of an inner sidewall of the housing closer to the loudspeaker unit, and the acoustic guide channel extends in a curved shape; the acoustic guide channel has an opening at one end and comprises an open end and a closed end, the open end is in communication with the rear acoustic cavity, and a bottom wall of the acoustic guide channel is provided with a plurality of through holes at a position closer to the closed end, the through holes are in communication with a sidewall of the housing, and an airflow in the acoustic guide channel is in communication with outside by means of the through holes.