1. Field of the Invention
The present invention relates to an electrical connector, and more particularly to an I/O receptacle connector. The invention is related to the copending application Ser. No. 13/479,289 filed May 24, 2012.
2. Description of Related Art
A connector capable of transmitting high-speed differential signals is used as an interface connector or an internal connector of a digital appliance or a PC. Such connector includes a plurality of signal contacts and a plurality of ground contacts. The signal contacts are paired in order to transmit differential signals in the manner known in the art. Generally, on the side of a fitting portion or a contacting portion side of the connector is fitted to or contacted with a mating connector. On the other hand, on the terminal portion side of the contacts to be connected to a board, the terminal portions are arranged in a plurality of rows because the terminal portions are inserted into a plurality of through holes, respectively.
At present, transmission of high-speed differential signals is required in a growing number of software applications. Under the circumstances, there is a demand for an improved connector having a compact size, a low piece, and excellent high-frequency characteristics.
Accordingly, the object of the present invention is to provide an electrical connector with an improved shielding and grounding feature.
In order to achieve the above-mentioned object, an electrical connector for mating with a plug and mounting to a printed circuit board, comprises an insulative housing defining a rear base and a front mating tongue, two rows of terminals received in the insulating housing and a shielding plate interposed between said two rows of the terminals. The terminals comprise contacting portions exposed upon opposite surfaces of the front mating tongue and board-connecting legs extending out of the rear base for mounting to the printed circuit board. The terminals are categorized with differential pairs of signal and grounding terminals mixed up with one another for coupling to the plug. The shielding plate includes at least one grounding finger split therefrom and a grounding leg for mounting to the printed circuit board. Each of the at lease one grounding finger is disposed between two adjacent differential pairs and parallel to the contacting portions of said terminals.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
Reference will now be made in detail to the first preferred embodiment of the present invention.
Referring to
As shown in
The lower row of second terminals 22 is molded with a terminal module 14. The terminal module 14 comprises an insulator 141. The terminals 22 comprise contacting portions 204 extending forwards from a front of the insulator 141 and connecting legs 205 extending downward from a bottom face of the insulator 141. The insulator 141 has partitioning grooves 1411 along a rear end thereof. The tongue member 13 and the terminal module 14 are assembled together and interlocking with each other. The contacting portions 204 of the terminal module 14 are accommodated in the grooves defined on a lower surface 138 of the tongue member 13. The terminal module 14 has locking arms 1412 interlocking with locking recesses 139 on the tongue member 13. The connecting legs 202 of the upper row run through the partitioning grooves 1411.
The tongue member 13 with the terminal module 14 is then commonly forwardly inserted into an insulating base 15, the front portion of the tongue member 13 extends from the insulating base 15 to be served as the front mating tongue 12. Then, the shielding shell 20 is retained on the insulating base 15 and surrounds the front mating tongue 12 of the housing, completing an I/O connection interface.
It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
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