Electrical connector having improved electrical element

An electrical connector (1) has a base portion (22), a number of terminals (3) mounted to the base portion, a first circuit board (42) assembled to the base portion, a substrate paralleled with the base portion and a number of pins (212) mounted on the substrate and a second circuit board (41) electrically engaging with the number of pins. The first and the second circuit boards together defines a receiving space (6). The electrical connector further has a number of electrical elements (5) received in the receiving space and together electrically connecting with the first circuit board and the second circuit board.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an electrical connector, and particularly to an electrical connector having a plurality of electrical elements for preventing electromagnetic interference (EMI).

2. Description of the Prior Art

A conventional modular jack mounted to an electrical connector is disclosed in TW Patent No. 486169 issued on May 01, 2002. The connector has a base board defining a plurality of terminal slots, a number of first terminals received in the terminal slot, a substrate parallel to the base board and a plurality of pins assembled to the substrate. The first terminal has a first end mating with a mating plug and a second end extending beyond the terminal slots. The electrical connector further comprises a printed circuit board electrically connected the base board to the substrate. The printed circuit board is provided with a plurality of first terminal holes engaging with the second ends of first terminals and a plurality of second terminal holes coupling with the pins. A plurality of electrical elements are soldered to the printed circuit board, thus forming a conductive trace between the first terminals, the printed circuit board and the pins.

During assembling, however, it is difficult to solder a plurality of electrical elements on a limited printed circuit board, and it is easy to cause a mutual collision between the electrical elements.

Hence, an improved electrical connector is needed to solve the above problem.

BRIEF SUMMARY OF THE INVENTION

One object of the present invention is to provide an electrical connector having larger enough space for receiving a plurality of electrical elements.

The present invention provides an electrical connector mounted on a printed circuit board. The electrical connector comprises a base portion defined a plurality of terminal slots, a plurality of terminals received in the terminal slots, a substrate paralleled with the base portion and a plurality of pins mounted on the substrate, a first circuit board electrically engaging with the terminals and a second circuit board electrically engaging with the plurality of pins. The first and the second circuit boards together define a receiving space. The electrical connector further includes a plurality of electrical elements received in the receiving space and electrically connecting with the first circuit board and the second circuit board.

Advantages of the present invention are to provide a first circuit board and a second circuit board on which a number of electrical elements are soldered. Therefore, the electrical connector has enough space adapted for locating the electrical elements and avoiding mutual collision between the electrical elements.

Other objects, advantages and novel features of the invention will become more apparent from the following detailed description of the present embodiments when taken in conjunction with the accompanying drawings.

DETAILED DESCRIPTION OF THE INVENTION

Reference will now be made to the drawing figures to describe the present invention in detail. Referring toFIG. 1, an electrical connector1in accordance with the present invention comprises a base portion22, a plurality of terminals3mounted to the base portion22, a first circuit board42assembled to the base portion22, a second circuit board41and a substrate21having a plurality of pins212mounted to the substrate21. The electrical connector1is provided with a plurality of electrical elements5such as coil chokes. The electrical elements5has a plurality of wires51both soldered to the first circuit board42and the second circuit board41.

As shown inFIGS. 1-3, the base portion22has two arrays of rectangular protrusions222,223paralleled with each other and arranged along regular intervals lengthwise along opposite sides of top surface of the base portion22. The base portion22comprises an indentation220defined between the two arrays of rectangular protrusions222,223and a plurality of terminal slots each formed between two adjacent rectangular protrusions222or223and communicating with the indentation220. Each rectangular protrusions222and223is provided with a rib224disposed on an inner side face thereon for engaging with the terminal3. The terminal3is retained in the terminal slot200firmly. The base portion22further has a pair of corresponding posts221extending form a side face thereof. Each terminal3has an elongate portion31received in the terminal slot200and a contacting portion32bent from the elongate portion31for engaging with a mating plug. The terminal3further comprises a tail portion33extending from the elongate portion31and beyond the base portion22.

The substrate21is parallel with the base portion22and has an planar portion213and a step portion210defining a pair of holes211thereon. A plurality of pins212are assembled to the planar portion213and each pin212has a first contacting end2120extending through a plurality of vias411defined on the second circuit board41and a second contacting end2121extending downwardly from the substrate21for engaging with a printed circuit board.

The first circuit board42is perpendicularly assembled to the base portion22and has a pair of projecting portions421extending downwardly therefrom and received in the holes211of the substrate21. The first circuit board42includes a pair of passages422respectively defined on side edge thereof for engaging with the corresponding posts221of the base portion22. A plurality of first holes423are provided on a top portion of the first circuit board42for engaging with tail portions33of the terminals3. Therefore, the first circuit board42is firmly fixed between the base portion22and the substrate21. The second circuit board41is mounted on the planar portion213of the substrate21thus being perpendicularly to the first circuit board42. At the same time, the first contacting ends2120of the pins212extend through the vias411of the second circuit board41. The first circuit board42and the second circuit board41, respectively, has a pair of pads400for electrically connecting the wires51of the electrical elements5. Thus the electrical elements5are located in a receiving space6formed between the first circuit board22and second circuit board41. At that time, a conductive trace is formed between the terminals3, the first and second circuit board42,41, and the pins212.