BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical receptacle connector, and more particularly to an I/O receptacle connector having a mating tongue with contacting sections of the corresponding contacts on two opposite surfaces thereon wherein a shielding/reinforcement plate between the two opposite surface under condition that the shielding/reinforcement plate are mechanically and electrically connected to some of the grounding contacts. 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.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide An electrical connector for mating with a plug and mounting to a printed circuit board, includes an insulative housing with a forwardly extending mating tongue thereof. A terminal module includes an insulator associated with a plurality of contacts commonly assembled into the housing. Those contacts are categorized with the differential pairs, the grounding contacts and the power contacts while each of the contacts includes a front contacting section exposed upon the mating tongue, a middle retention section retained to the insulator, and a rear tail section extending out of the housing. A metallic shielding/reinforcement plate associated with the terminal module is assembled into the housing, and includes a front region inserted into the mating tongue, a middle region with a spring tang to mechanically and electrically connected to the selected grounding contact, and a rear tail section extending out of the housing.
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.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view showing the mated receptacle connector and plug connector in accordance with a first embodiment of the present invention;
FIG. 2 is a side cross-sectional view of the receptacle connector of FIG. 1;
FIG. 3 is a front cross-sectional view of the receptacle connector of FIG. 1;
FIG. 4 is a perspective view of the contacts of the receptacle connector of FIG. 1;
FIG. 5 is an exploded perspective view of the receptacle connector of FIG. 1;
FIG. 6 is a partially exploded perspective view of the receptacle connector of FIG. 1;
FIG. 7 is another partially exploded perspective view of the receptacle connector of FIG. 1;
FIG. 8 is a perspective view of the receptacle connector in accordance with another embodiment of the present invention;
FIG. 9 is a cross-sectional view of the receptacle connector of FIG. 8;
FIG. 10 is an exploded downward perspective view of the receptacle connector of FIG. 8;
FIG. 11 is an exploded upward perspective view of the receptacle connector of FIG. 8.
FIG. 12 is a partially assembled downward perspective view of the terminal modules of receptacle connector;
FIG. 13 is a partially assembled upward perspective view of the terminal modules of receptacle connector;
FIG. 14 is a exploded perspective view of the receptacle connector with the terminal modules are preassembled together;
FIG. 15 is a diagram to show the positions of the different categorized contacts of a receive side; and
FIG. 16 is a diagram to show the positions of the different categorized contacts of a transmit side.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Reference will now be made in detail to the first preferred embodiment of the present invention.
Referring to FIGS. 1-7, an electrical connector assembly of a first embodiment including a receptacle connector 10 mounted upon a printed circuit board 90 and a plug cable connector 92 mated with each other. As best shown in FIGS. 5 and 6, the receptacle connector 10 includes an insulative housing 12 defining a rear base 14 with a receiving cavity 16 therein and a front mating tongue 18 extending forwardly from the base 14. The receiving cavity 16 opens rearwards. An upper/first terminal module 20 and a lower/second terminal module 22 are located behind the mating tongue 18. Each of the upper and lower terminal modules 20, 22 includes an insulator 24, 26 commonly located in the receiving cavity 16, and a plurality of upper and lower contacts 28, 30 associatively insert-molded within the corresponding insulator 24, 26 with contacting sections 32, 34 extending from font ends of the insulator 24, 26 and as shown in FIG. 2, exposed upon opposite upper and lower surfaces 17, 19 of the mating tongue 18 and tail sections 36, 40 exposed out of a rear side of the housing 12 for mounting to the printed circuit board 90. The contacts 28, 30 as best shown in FIG. 3, are categorized with differential pairs 95, the grounding contacts 97 and the power contacts 99 mixed up with one another as shown in FIG. 15.
As best shown in FIGS. 5 and 6, a metallic shielding/reinforcement plate 42 is located between the upper and lower terminal modules 20, 22 and defines a pair of spring tangs 44 extending upwardly to mechanically and electrically contact the corresponding grounding contacts 82. The shielding/reinforcement plate 42 includes a front region 46 extending into the mating tongue 18 for reinforcing the mating tongue 18, and a pair of rear tail sections 48 extending through the lower insulator 26 for mounting to the printed circuit board 90, and thee mounting tabs 50 fastened to the lower insulator 26 for fastening the shielding/reinforcement plate 42 to the lower insulator 26. The mounting tabs 50 and the tail sections 48 are lined and alternated with each other.
During assembling as best shown in FIGS. 6 and 7, the shielding/reinforcement plate 42 is first assembled to the lower insulator 26 and commonly forwardly inserted into the housing 12 from a rear side of the housing 12 wherein the contacting sections 34 of the lower contacts 30 are exposed upon the lower surface 19 of the mating tongue 18 and the lower insulator 26 is received in a lower portion of the receiving cavity 16. The upper terminal module 20 is successively forwardly inserted into an upper portion of the receiving cavity 16 with the contacting section 32 exposed upon the upper surface 17 of the mating tongue 18. The lower terminal module 22 has no projection portion higher than the spring tangs 44 so that the upper terminal module 22 is inserted into the receiving cavity 16 after the lower terminal module 22 is retained in the receiving cavity. Finally, a metallic shell 52 encloses the housing 12 and a rear wall 54 of the shell 52 is bent downwardly to shield the housing 12.
Referring to FIGS. 8-14, a receptacle connector 60 of another embodiment of the present invention includes an insulative housing 62 defining a rear base 64 and a front mating tongue 66 extending forwardly from the base portion 64 and defining opposite upper and lower surfaces thereon. A plurality of contact receiving passageways 68 are formed in the corresponding upper and lower surfaces. Upper and lower terminal modules 70 are stacked with each other in a vertical direction. Each of the upper and lower terminal modules 70 includes an insulator 72 received in the base 64, and a plurality of contacts 74 are integrally insert-molded in the insulator 72. Similar to those in the first embodiment, those contacts 74 are categorized with the differential pairs, the grounding contacts and the power contacts mixed up with one another. Each of the contacts 74 includes a front contacting section 76 extending from a front end of the insulator 72 and received in the corresponding passageway 68, a middle retention section 78 as best shown in FIG. 9 embedded within the insulator 72 and a rear tail section 80 extending out of the insulator 72 and the housing 62 for mounting to a printed circuit board.
A metallic shielding/reinforcement plate 82 is sandwiched between the upper and lower terminal modules 70 and includes a front region 84 inserted into a slit of the mating tongue 66 for reinforcing the mating tongue 66, a middle region 86 sandwiched between the insulators 72 of the upper and lower modules 70, and a rear region 88 extending downwardly through the corresponding through holes 79 of the insulator 72 of the lower terminal module 70 for mounting to the printed circuit board. A pair of spring tangs 89 unitarily extend from the middle region 86 toward to selectively contact the corresponding grounding contacts 74 of the upper terminal module 70. Notably, the insulator 72 of the upper terminal module 70 defines in an underside two apertures 73 corresponding to the selected grounding contacts 74 for allowing such spring tangs 89 to extend therethrough for contacting such selected grounding contacts 74. A metallic shell 96 is assembled to and encloses the housing 62 to cooperate with the mating tongue 66 to define a mating port for receiving a plug.
Different from those in the first embodiment which discloses the terminal modules 20, 22 are assembled into the housing 12 in sequence, the upper and lower terminal modules 70 are first assembled to each other before commonly assembled into the housing 62. Correspondingly, the insulator 72 of the lower terminal module 70 include a pair of mounting holes 75 and an insulator 72 of the upper terminal module 70 includes a pair of mounting posts 77 received in the corresponding mounting holes 75 respectively. Understandably, the shielding/reinforcement plate 82 is structured not to hinder engagement between the mounting posts 77 and the mounting holes 75. Understandably, in some instances at least a portion of the mating tongue 66 may be provided by at least one of the upper and lower terminal modules 70 for consideration of manufacturability. Notably, the lower terminal module 70 further defines shaping convexes 722 corresponding to the tail sections 80 of the contacts 74. The shaping convexes 722 are integrated with a bottom face of the insulator 72 and projecting downwards from the bottom face, which are formed during automotive forming process of the lower terminal module 72. Each tail section 80 is fitly surrounded with one shaping convex 722 and pierce through an apex of the shaping convex 722.
Notably, in the first embodiment, as shown in FIGS. 3, 4 and 15, the contacts 28, 30 defines four channels each including two differential pairs respectively for transmission and reception, and two enlarged power contacts 99, and three pairs of grounding contacts 97 each sandwiching a corresponding differential pair therebetween while sharing a same mounting tail with each other. Therefore, the differential pair 95, which is sandwiched by a pair of grounding contacts 97 sharing the same mounting tail, defines the corresponding mounting tails arranged in one row while the shared mounting tails of those three pairs of grounding contacts 97 are located in another row behind
Patent Application
20140194005
