This invention generally relates to the art of electrical connectors and, particularly, to an improved arrangement for mounting conductive terminals in the connector housing.
When electrical current flows through the RJ11 terminals 20, an electromagnetic field (EMF) is produced and which interferes with the signals of the surrounding terminals. This phenomenon is called cross-talk or electromagnetic interference (EMI). The cross-talk or EMI will affect the quality of signal transmission. Therefore, common electrical design specifications require that each RJ11 terminal in this type of electrical connector be kept at a minimum distance away from other signal terminals, usually 2.54 mm.
An object, therefore, of the invention is to provide a new and improved electrical connector of the character described.
In the exemplary embodiment of the invention, an electrical connector includes a generally rectangular housing having a pair of opposite long sides defining a long direction and a pair of short ends defining a short direction. A plurality of terminal receiving passages are formed in the housing. The connector includes a plurality of power terminals, and a plurality of signal terminals including RJ45 terminals and RJ11 terminals. The terminal-receiving passages are divided into a power terminal-receiving section and a signal terminal-receiving section spaced from each other in the long direction. The signal terminal-receiving section is divided into an RJ45 terminal-receiving section and an RJ11 terminal-receiving section spaced from each other in the short direction.
According to one aspect of the invention, the RJ11 terminal-receiving section is located at an outside corner of the signal terminal-receiving section. The terminal-receiving passages in the RJ11 terminal-receiving section are in an oblique line relative to the long direction.
According to another aspect of the invention, the insulative housing includes a base portion through which the terminal-receiving passages extend. A pair of opposite side walls and a pair of opposite end walls project upwardly from the base portion. The connector is adapted for mounting on a printed circuit board, and the circuit board has terminal-receiving holes aligned with the terminal-receiving passages in the base portion of the housing.
According to a further aspect of the invention, a shielding metal shell substantially surrounds the insulative housing of the connector. In the exemplary embodiment, the shell includes a pair of shielding metal shell halves substantially covering the side walls of the housing. A shielding metal shell portion substantially covers a top of the housing spanning the side walls and end walls thereof.
Other objects, features and advantages of the invention will be apparent from the following detailed description taken in connection with the accompanying drawings.
The features of this invention which are believed to be novel are set forth with particularity in the appended claims. The invention, together with its objects and the advantages thereof, may be best understood by reference to the following description taken in conjunction with the accompanying drawings, in which like reference numerals identify like elements in the figures and in which:
Referring to the drawings in greater detail, and first to
Insulative housing 30 of connector 26 is generally rectangular and defines an upwardly-facing opening 38. This connector is designed so that the upwardly facing opening 38 extends through a bottom portion of a portable computer (not shown) which mates with a connector in a computer docking station (not shown). The housing has a pair of opposite side walls 40 at opposite long sides of the opening to define a long direction “A”. The housing has a pair of opposite end walls 42 which define opposite short ends of the opening to define a short direction “B”. A pair of locating or orienting holes 44 are formed in the end walls for orienting a mating connector in the docking station. The side walls and the end walls project upwardly from a base portion 46 of the housing. The base portion has a plurality of terminal-receiving passages 48 for receiving tail portions of the power and signal terminals 34 and 36, respectively. Finally, a plurality of support posts 50 and 52 project upwardly from base portion 46, inside opening 38, for supporting the power and signal terminals. The entire housing, including side walls 40, end walls 42, base portion 46, and support posts 50 and 52, can be a one piece structure unitarily molded of dielectric material such as plastic or the like.
Generally, a shielding metal shell 54 substantially surrounds insulative housing 30 or at least the long sides and the top of the housing. Specifically, the shielding metal shell includes a pair of shell halves 54a and 54b which are in the form of long metal plates which cover the side walls of the housing and which are latched thereto, as at 56 (
Referring to
With those understandings and still referring to
However, it also can be seen that the RJ45 terminal-receiving section 78 and the RJ11 terminal-receiving section 80 are spaced from each other in the short direction “B” of the connector.
Further, the RJ11 terminal-receiving section 80 is located at an outside corner of the entire signal terminal-receiving section 74. Finally, it can be seen that the passages and holes in the RJ11 terminal-receiving section are in an oblique line relative to the long direction “A”. This entire arrangement allows for the RJ11 terminals to be a farther distance from the other signal terminals, including both the common signal terminals 64 and the RJ45 terminals 66, than the distance is in the prior art. This helps to reduces crosstalk and EMI interference and, therefore, enhances the quality of signal transmission. This arrangement can be made without requiring a larger footprint on the printed circuit board or a lengthening of the connector housing.
It will be understood that the invention may be embodied in other specific forms without departing from the spirit or central characteristics thereof. The present examples and embodiments, therefore, are to be considered in all respects as illustrative and not restrictive, and the invention is not to be limited to the details given herein.
Number | Date | Country | Kind |
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094210438 | Jun 2005 | TW | national |