Abstract: Disclosed is an earphone jack including a housing, a circuit connector mounted in the housing, and a plurality of first connecting terminals each including a first connecting section outwardly protruded from the housing, to be connected to a circuit of an audio appliance, and a second connecting section extending from the first connecting section while being bent to have a C shape such that the second connecting section elastically fits around an associated one of the connecting terminals of the earphone plug. It is possible to elastically support the earphone plug even after the earphone plug is repeatedly inserted into and separated from the housing, because the first connecting terminals have a structure bent to have a circular shape.

Abstract: Provided is a receptacle connector for a battery in a mobile electric device. The receptacle connector includes a contact terminal, a connection terminal, and an extension portion. The contact terminal electrically contacts a plug connector of the mobile electric device. The connection terminal is fit and soldered in a through hole of a battery PCB, and is integrally formed with the contact terminal. The extension portion is bent and extends from a front end of the connection terminal to form a solder receiving space for receiving solder flowing through the through hole of the PCB together with the connection terminal while a soldering operation is performed on the connection terminal. The extension portion together with the connection terminal is fit and soldered in the through hole of the PCB.

Abstract: A plug connector for a mobile communication device is provided. The plug connector includes a plurality of contact pins, an insulator, and an outer shell. The contact pins are provided correspondingly to contact terminals of a socket connector for the mobile communication device, and are arranged with predetermined gaps therebetween. The insulator supports the contact pins. The outer shell encloses the insulator, and includes a substrate supporter extended outwardly from the insulator to support an outer surface of a PCB (printed circuit board). The substrate supporter comprises a side supporter enclosing lateral sides of the PCB, and a ground portion bonded to put to earth to a ground circuit of a PCB. The plug connector is capable of firmly bonding with a PCB, preventing from noise occurring.

Abstract: Provided is a receptacle connector for a battery in a mobile electric device. The receptacle connector includes a contact terminal, a connection terminal, and an extension portion. The contact terminal electrically contacts a plug connector of the mobile electric device. The connection terminal is fit and soldered in a through hole of a battery PCB, and is integrally formed with the contact terminal. The extension portion is bent and extends from a front end of the connection terminal to form a solder receiving space for receiving solder flowing through the through hole of the PCB together with the connection terminal while a soldering operation is performed on the connection terminal. The extension portion together with the connection terminal is fit and soldered in the through hole of the PCB.

Abstract: A plug connector for a mobile communication device is provided. The plug connector includes a plurality of contact pins, an insulator, and an outer shell. The contact pins are provided correspondingly to contact terminals of a socket connector for the mobile communication device, and are arranged with predetermined gaps therebetween. The insulator supports the contact pins. The outer shell encloses the insulator, and includes a substrate supporter extended outwardly from the insulator to support an outer surface of a PCB (printed circuit board). The substrate supporter comprises a side supporter enclosing lateral sides of the PCB, and a ground portion bonded to put to earth to a ground circuit of a PCB. The plug connector is capable of firmly bonding with a PCB, preventing from noise occurring.