TW201628272A - Electrical connector and electrical connector system - Google Patents

Abstract

An electrical connector is used for mounting to an exterior printed circuit board (PCB). The electrical connector includes a plurality of transmitting passageways each has two mating contacts, a transformer, a common mode choke, and two mounting contacts. The mounting contacts are used for mounting to the exterior PCB. The mating contacts electrically connect to the mounting contacts through the transformers and common mode chokes. The transformer includes a primary winding with a center tap and a secondary winding. The exterior PCB includes a resistance, a capacitance, and a grounding point. The capacitance has an end electrically connecting with the resistance and the other end electrically connecting with the capacitance. The electrical connector also has a transferring contact connecting with the center tap and the resistance.

Description

Electrical connector and electrical connector system

The present invention relates to an electrical connector and system therefor, and more particularly to a placement and connection of resistors and capacitors in an electrical connector.

The RJ45 electrical connector is mounted on an external circuit board for transmitting network signals between the RJ45 plug connector and the external board. Transformers, common mode chokes, resistors, and capacitors are often integrated into electrical connectors. In order to place resistors and capacitors in Bob-smith circuits, additional circuits are usually required. Board connections result in increased costs. In the prior art, reference is made to U.S. Patent No. 6,568,966 B1 and U.S. Patent No. 7,524,206 B2, the entire disclosure of which is incorporated herein by reference.

The technical problem to be solved by the present invention is to provide an electrical connector with low production cost.

In order to solve the above technical problems, the technical means of the present invention is:

An electrical connector mountable to an external circuit board, the electrical connector being provided with a plurality of signal transmission channels, each signal transmission channel being provided with two butt terminals, a transformer coil, a common mode suppression coil and two pin terminals The docking terminal is electrically connected to the pin terminal by a transformer coil and a common mode suppression coil, the pin terminal is mounted on an external circuit board, the transformer coil includes a primary coil and a secondary coil, and the primary coil a first center tap is disposed, the external circuit board is provided with a resistor, a capacitor and a grounding point, and one end of the capacitor is electrically connected to the resistor, and the other end is electrically connected to the grounding point, wherein the electrical connector further The adapter terminal is provided with one end connected to the first center tap and the other end for mounting on an external circuit board and electrically connected to the resistor.

Another technical problem to be solved by the present invention is to provide an electrical connector system which is low in production cost.

In order to solve the above technical problems, the technical means of the present invention is:

An electrical connector system includes an external circuit board and an electrical connector mounted on the external circuit board, the electrical connector is provided with a plurality of signal transmission channels, each signal transmission channel is provided with two docking terminals, a transformer coil, a common mode suppression coil and two pin terminals, the docking terminal is electrically connected to the pin terminal by a transformer coil and a common mode suppression coil, the pin terminal is mounted on an external circuit board, and the transformer coil includes a primary coil And a secondary coil, the primary coil is provided with a first center tap, and the external circuit board is provided with a resistor, a capacitor and a grounding point, and one end of the capacitor is electrically connected to the resistor, and the other end is electrically connected to the grounding point. The connection, wherein the electrical connector is provided with a transfer terminal, one end of the transfer terminal is connected to the first center tap, and the other end is mounted on the external circuit board and electrically connected to the resistor.

Compared with the prior art, the present invention mounts the resistors and capacitors in the Bob-smith circuit on an external circuit board, and electrically connects the resistors and capacitors of the Bob-smith circuit to the transformer coil through the transfer terminals, saving. The internal circuit board of the resistor and capacitor in which the Bob-smith circuit is placed is removed, and the production cost of the electrical connector and its system is reduced.

The first figure is a top view of an electrical connector in accordance with the present invention.

The second figure is in accordance with the layout of the external circuit board of the present invention.

The third figure is a first embodiment of an electrical connector system circuit in accordance with the present invention.

The fourth figure is a second embodiment of the electrical connector system circuit in accordance with the present invention.

The fifth figure is a third embodiment of the electrical connector system circuit in accordance with the present invention.

The sixth drawing is a fourth embodiment of the electrical connector system circuit in accordance with the present invention.

Referring to the first and second figures together, an electrical connector system includes an external circuit board 100 and an electrical connector 200 mounted on the external circuit board 100.

Please refer to the third to sixth figures together, which is a circuit diagram of four embodiments of an electrical connector system, wherein the third and fourth figures are electrical connector systems conforming to a 10/100 Mbps network, and the fifth figure And the sixth figure is an electrical connector system that conforms to a 10/1000 Mbps and above (1 Gbps, 10 Gbps) network.

Please refer to the third and fourth figures together for the circuit diagram of the 10/100 Mbps RJ45 electrical connector system. The electrical connector 200 is provided with a plurality of signal transmission channels, and each signal transmission channel is provided with two butt terminals 1 and a transformer coil. 2. A common mode suppression coil 3 and two pin terminals 4. The docking terminal 1 is electrically connected to the pin terminal 4 by the transformer coil 2 and the common mode suppression coil 3, and the pin terminal 4 is mounted into the conductive via 101 on the external circuit board 100.

The transformer coil 2 includes a primary coil 21 and a secondary coil 22, the primary coil 21 is provided with a first center tap 211, and the external circuit board 100 is provided with a resistor 5, a capacitor 6 and a grounding point 7, One end of the capacitor 6 is electrically connected to the resistor 5, and the other end is connected to the ground point 7. The electrical connector 200 is further provided with a transfer terminal 8 connected at one end to the first center tap 211 and at the other end to the external circuit board 100 and electrically connected to the resistor 5.

The primary coil 21 has two first ends 212 connected to the two mating terminals 1, respectively. The secondary coil 22 is connected to the common mode suppression coil 3 and electrically connected to the external circuit board 100 by the pin terminal 4, and the common mode suppression coil 3 has two second lines respectively connected to the two pin terminals 4. Head 32. The secondary coil 22 is provided with a second center tap 221 having a line 31 connected to the second center tap 221. In the physical structure of the electrical connector 200 (not shown), the two first wire ends of the primary coil are respectively wound on the two mating terminals, and the two second wire ends of the common mode suppressing coil are wound and connected to the two pin terminals; the transformer coil And the common mode suppression coil comprises a plurality of enameled wires of a core and a wound core, and the plurality of enameled wires are wound around the transformer core and the common mode suppression core, and the first wire and the second wire are respectively opposite ends of the enameled wire.

In the third and fifth figures, the external circuit board 100 is provided with four resistors 5 and a capacitor 6. The four resistors 5 are connected in series with the capacitor 6 in parallel, and the electrical connector 200 is provided with four mounted on The adapter terminal 8 on the external circuit board 100 is electrically connected to a resistor 5 and a first center tap 211 (or a docking terminal 1) of a transformer coil 2.

In the fourth and sixth figures, the external circuit board 100 is provided with a resistor 5 and a capacitor 6. The electrical connector 200 is provided with a transfer terminal 8 mounted on the external circuit board 100, and a plurality of transformer coils 2 The first center tap 211 (or the docking terminal 1) is connected in parallel and in series with the switching terminal 8. Compared to the third and fifth embodiment, the fourth and sixth embodiments have fewer transfer terminals and resistors and are less expensive to produce.

Referring to the first and second figures, the electrical connector 200 includes an insulative housing 91 and a mask housing 92 that is wrapped around the outside of the insulative housing 91. The insulative housing 91 is provided with a receiving slot that opens from the front to the rear. As shown in the figure, the receiving slot is for inserting and mating a mating connector (not shown). The insulative housing 91 has a bottom wall 911 for mounting to the outer circuit board 100, and both the pin terminal 4 and the adapter terminal 8 project downward from the insulative housing 91 beyond the bottom wall 911. The portion of the pin terminal 4 that extends downward beyond the bottom wall 911 is located before the pin terminal 4 extends beyond the portion of the bottom wall 911, which facilitates the layout of the external circuit board.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above-mentioned embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. It should be covered by the following patent application.

1‧‧‧Docking terminal

100‧‧‧External circuit board

101‧‧‧ conductive through holes

2‧‧‧Transformer coil

200‧‧‧Electrical connector

21‧‧‧ primary coil

211‧‧‧First Center Tap

212‧‧‧First line head

22‧‧‧secondary coil

221‧‧‧second center tap

3‧‧‧Common mode suppression coil

31‧‧‧ midline

32‧‧‧second line head

4‧‧‧ pin terminal

5‧‧‧Resistors

6‧‧‧ capacitor

7‧‧‧ Grounding point

8‧‧‧Transfer terminal

91‧‧‧Insulated body

911‧‧‧ bottom wall

92‧‧‧mask housing

no

1‧‧‧Docking terminal

2‧‧‧Transformer coil

21‧‧‧ primary coil

211‧‧‧First Center Tap

212‧‧‧First line head

22‧‧‧secondary coil

221‧‧‧second center tap

3‧‧‧Common mode suppression coil

31‧‧‧ midline

32‧‧‧second line head

4‧‧‧ pin terminal

5‧‧‧Resistors

6‧‧‧ capacitor

7‧‧‧ Grounding point

8‧‧‧Transfer terminal

Claims (10)

An electrical connector mountable to an external circuit board, the electrical connector being provided with a plurality of signal transmission channels, each signal transmission channel being provided with two butt terminals, a transformer coil, a common mode suppression coil and two pin terminals The docking terminal is electrically connected to the pin terminal by a transformer coil and a common mode suppression coil, the pin terminal is mounted on an external circuit board, the transformer coil includes a primary coil and a secondary coil, and the primary coil a first center tap is disposed, the external circuit board is provided with a resistor, a capacitor and a grounding point, and one end of the capacitor is electrically connected to the resistor, and the other end is electrically connected to the grounding point, wherein the electrical connector further The adapter terminal is provided with one end connected to the first center tap and the other end for mounting on an external circuit board and electrically connected to the resistor. The electrical connector of claim 1, wherein the electrical connector is provided with four adapter terminals for mounting on an external circuit board, and each of the adapter terminals is electrically connected to a transformer coil. A center tap. The electrical connector of claim 1, wherein the electrical connector is provided with a transfer terminal for mounting on an external circuit board, and the first center tap of the plurality of transformer coils is connected in parallel with the transfer The terminals are connected in series. An electrical connector system includes an external circuit board and an electrical connector mounted on the external circuit board, the electrical connector is provided with a plurality of signal transmission channels, each signal transmission channel is provided with two docking terminals, a transformer coil, a common mode suppression coil and two pin terminals, the docking terminal is electrically connected to the pin terminal by a transformer coil and a common mode suppression coil, the pin terminal is mounted on an external circuit board, and the transformer coil includes a primary coil And a secondary coil, the primary coil is provided with a first center tap, and the external circuit board is provided with a resistor, a capacitor and a grounding point, and one end of the capacitor is electrically connected to the resistor, and the other end is electrically connected to the grounding point. The connection, wherein the electrical connector is provided with a transfer terminal, one end of the transfer terminal is connected to the first center tap, and the other end is mounted on the external circuit board and electrically connected to the resistor. The electrical connector system of claim 4, wherein the primary coil has two first wire ends that are respectively connected to the two butt terminals. The electrical connector system of claim 4, wherein the secondary coil is connected to the common mode suppression coil and electrically connected to the external circuit board by the pin terminal. The electrical connector system of claim 5, wherein the two first ends of the primary coil are respectively wound on the two mating terminals. The electrical connector system of claim 6, wherein the common mode suppression coil has two second wire ends respectively connected to the two pin terminals, and the second wire ends are wound and connected to the two pin terminals. . The electrical connector system of claim 4, wherein the external circuit board is provided with four resistors and a capacitor, the four resistors being connected in parallel and connected in series with a capacitor, the electrical connector being provided There are four transfer terminals mounted on the external circuit board, and each of the transfer terminals is electrically connected to a resistor and a first center tap of a transformer coil. The electrical connector system of claim 4, wherein the circuit board is provided with a resistor and a capacitor, the electrical connector is provided with a transfer terminal mounted on the external circuit board, and a plurality of transformer coils. The first center taps are connected in parallel and connected in series with the switching terminals.