Patent ID: 8597061

Claim:
An earphone plug, comprising: a terminal, having an external signal interface and an internal signal interface each having a plurality of signal interfaces adapted to transmit signals; and a switch device, combined with the terminal and having a first conductor and a second conductor, wherein, when the switch device is switched between a first mode and a second mode, the first conductor and the second conductor alternately contact with two of the signal interfaces to change the order of signals transmitted by the signal interfaces on the terminal, wherein in two of the plurality signal interfaces of the internal signal interface, each signal interface having a conduction area and an insulation area, and the conduction area and the insulation area are interlaced, wherein the first conductor has at least two pins and the second conductor has at least two pins, and wherein both the one pin of the first conductor and the one pin of the second conductor and both the other pin of the first conductor and the other pin of the second conductor alternately contact with the two signal interfaces having the conduction area and the insulation area in the internal signal interface.