Patent ID: 8737665

Claim:
A negative pressure earphone, comprising: a main body; a cover portion, fitted to the rear end of the main body; a silicone gel earplug, fitted to the protruding end of the main body; a filtering net, fitted to the protruding end of the main body; and a moving coil sound unit, disposed inside the main body, wherein a sealing framework portion is disposed inside the main body and the moving coil sound unit is fitted to the sealing framework portion, and that a negative pressure portion is disposed on the sealing framework portion and the moving coil sound unit and the negative pressure portion are horizontally fitted to the sealing framework portion, wherein the negative pressure portion comprises one or more negative pressure elements, which are disposed on the sealing framework portion, and wherein the sealing framework portion, negative pressure portion and moving coil sound unit may be fitted or arranged in different manners and at different angles, wherein the negative pressure portion has a planar base portion, which is made of a thin film or layer of metal, macromolecular chemical or organic material, wherein the base portion is sandwiched between a lower portion and an upper portion, which are made of a composite material.