EARPHONE DEVICE

摘要

An earphone device includes a housing, a speaker diaphragm, and a sealing cup. The housing includes a cavity and a plurality of vent holes acoustically coupled to the cavity. The speaker diaphragm is received in the cavity and configured to produce sound. The sealing cup is hermetically closed with the housing, and has at least one opening defined therethrough. The sealing cup and the housing cooperate to define an air chamber acoustically coupled to both the vent holes and the opening. The vent holes are configured to transfer the sound produced by the speaker diaphragm into the air chamber. The air chamber serves as an acoustic resonator to resonate the sound. The opening is configured to allow the sound transfer from the air chamber to outside of the air chamber.

主权项

1. An earphone device comprising:
a housing defining a cavity and a plurality of vent holes acoustically coupled to the cavity; a speaker diaphragm received in the cavity and configured to produce sound; and a sealing cap configured to hermetically close the housing and having at least one opening defined therethrough; wherein the sealing cap and the housing cooperate to define an air chamber acoustically coupled to both the vent holes and the opening, the vent holes are configured to transfer the sound produced by the speaker diaphragm into the air chamber, the air chamber serves as an acoustic resonator to resonate sound, and the opening is configured to allow the sound transfer from the air chamber to outside of the air chamber.