Patent ID: 8861769

Claim:
A headphone device, comprising: a first audio output module, including a first concave disposed in the first audio output module; a second audio output module, including a second concave disposed in the second audio output module; a head module connected between the first audio output module and the second audio output module that are located at both ends of the head module respectively; the head module further comprising a flexible metal strip including a plurality of first projections one of which is buckled to the first concave, a plurality of second projections one of which is buckled to the second concave, and two protective projections disposed at two ends of the flexible metal strip; and a head cushion module, surrounding middle of the flexible metal strip, wherein the head cushion module has a lining made of a recoverable material, a wrap made of a soft material, and a bottom made of a material which is allowed to be fastened and unfastened repeatedly; wherein the head module stays bent when in use and stays straight when in compact storage; wherein when the projections closest to the ends of the flexible metal strip are buckled to the first concave and the second concave, the protective projections prevent the flexible metal strip from coming off the first audio output module and the second audio output module; wherein when the headphone device is in the compact storage, one of the first projections and one of the second projections that are closest to the head cushion module are buckled to the first concave and the second concave respectively.