TWI506887B - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector having an isolation transformer mounted on a circuit board.

An electrical connector is disclosed in the Chinese Patent No. CN101908682B, which is issued on May 23, 2012. The electrical connector is mounted on a main circuit board. The electrical connector includes an insulative housing and a terminal module received in the insulative housing. The terminal module further includes a built-in circuit board perpendicular to the main circuit board, a mating terminal mated with the mating connector, and a set of transfer terminals disposed under the mating terminal and the built-in circuit board, the built-in circuit board having the opposite The inner side and the outer side are provided, the inner side is provided with a plurality of magnetic coil assemblies, and the outer side is provided with an indicator light for indicating the working state and a plurality of electronic components. The magnetic coil assembly needs to be manually wound, and the process is complicated and the cost is high.

Therefore, in order to solve the above problems, it is necessary to modify the aforementioned electrical connector.

It is an object of the present invention to provide an electrical connector that is simpler in process and less costly, while at the same time avoiding the problem of high voltage during operation of the electrical connector.

In order to solve the foregoing technical problems, the present invention provides an electrical connector formed with a plurality of differential signal channels including a plurality of pairs of docking terminals as one end of each differential signal path, a plurality of butt pins as the other ends of the differential signal channels, and a circuit board component for connecting a mating terminal and a pin terminal, the circuit board component comprising a built-in circuit board and a plurality of electronic components mounted on the built-in circuit board, the electronic components including the middle of each of the differential signal channels a plurality of isolation transformers, each isolation transformer comprising a magnetic core, a primary side coil connecting the butt terminal, a chip terminal for connecting the primary side coil to the built-in circuit board, a secondary side coil connecting the pin terminal, and a secondary side coil Connected to the chip terminal of the built-in circuit board, the chip terminal enables the isolation transformer to be mounted on the built-in circuit board in a chip form, and the primary side coil and the secondary side coil have two input ends and a center tap, and the two input ends of the primary side coil are connected The chip terminals with the center tap are distributed on the opposite ends of the lateral side of the isolation transformer, and the secondary side lines are connected. The two input ends and the center tapped patch terminals are distributed on opposite ends of the isolation transformer laterally opposite to the other side, and the isolation transformers are laterally aligned and arranged in parallel on the first surface of the built-in circuit board, and two adjacent to each other The side of the isolation transformer connecting the primary side coil patch terminals is opposite to each other or opposite to each other.

Compared with the prior art, the built-in circuit board of the electrical connector of the present invention is provided with a chip type isolation transformer, which is designed to simplify the process and reduce the cost; and at the same time, due to the space limitation of the built-in circuit board, the patch The isolation transformers need to be arranged very closely. The two patch-type isolation transformers adjacent to each other are connected to one side of the primary coil patch terminals opposite to each other or opposite to each other. This design eliminates the high voltage problem that may be caused by the distance.

Other specific designs of the invention are as follows:

The electrical connector is mounted on a horizontal external circuit board and includes an insulative housing having a horizontally forward opening for a plug to be inserted back into the opening in a horizontal direction, the built-in circuit board being horizontally arranged and provided a front connecting portion that is horizontally arranged on a front edge of the built-in circuit board, and a side connecting portion that is arranged in a front-rear direction on a side edge of the built-in circuit board, and the mating terminal is connected to a corresponding patch terminal of the isolation transformer through a front connecting portion, The pin terminal is connected to a corresponding chip terminal of the isolation transformer through a side connection portion.

The isolation transformer core includes an I-shaped magnetic core having an intermediate winding portion and a cover magnetic core covered on the I-shaped magnetic core, and the primary-side coil and the secondary-side coil are wound around the winding of the I-shaped magnetic core And the winding portion extends in the longitudinal direction.

Each of the docking jacks has four differential signal channels, and a series transformer for filtering common mode noise is connected between the secondary coil and the pin terminal of the isolation transformer in each differential signal channel, and the lateral direction of the isolation transformer The electrical connectors are parallel in front and rear directions and are disposed away from the side connecting portions, and the series transformers are disposed on the same side of the built-in circuit board near the side connecting portions.

The side connecting portion is a first to eighth side connecting portion from the front to the rear, and the front connecting portion is a first to eighth front connecting portion from the side connecting portion, and the first and second side connecting portions thereof One and the second front connecting portion are connected to the first differential signal channel, the third and fourth side connecting portions and the third and fourth front connecting portions are connected to the second differential signal channel, the fifth and sixth side connecting portions and the first The fifth and sixth front connecting portions are connected to the third differential signal path, and the seventh and eighth side connecting portions and the seventh and eighth front connecting portions are connected to the fourth differential signal path.

The isolation transformers are first to fourth isolation transformers from front to back, and the first isolation transformer is connected to the first differential signal channel, the second isolation transformer is connected to the second differential signal channel, and the third isolation transformer is connected to the third a differential signal path, a fourth isolation transformer is connected to the fourth differential signal channel, and a chip terminal connected to the primary isolation coil of the first isolation transformer is closer to the front connection portion, and the first surface of the built-in circuit board is connected with at least a portion A plurality of conductive lines of the front connection portion, the plurality of conductive lines extending rearward beyond a patch terminal connecting the primary side coil of the first isolation transformer.

The built-in circuit board is provided with a conductive line connecting the seventh and eighth front connecting portions on the second surface opposite to the first surface, and the two conductive lines extend rearward in parallel to the patch connecting the primary winding of the fourth isolation transformer At the terminal.

The electronic component further includes a capacitor and four resistors in a unitary structure. The capacitor and the four resistors of the overall structure are disposed on the second surface of the built-in circuit board, and one ends of the four resistors are respectively electrically connected The center tap of the primary winding of the isolation transformer, the other end is connected in parallel to one pole of the capacitor, and the other pole of the capacitor is grounded.

The resistor is disposed on a side of the capacitor away from the side connecting portion, and a pole of the capacitor ground is disposed adjacent to the side connecting portion.

The electrical connector is provided with a pair of upper and lower aligned butt sockets, and the insulating body is provided with the corresponding opening.

10. . . Electrical connector

11. . . Front cover housing

12. . . Rear mask housing

13. . . Insulating body

130. . . Docking socket

14. . . Terminal module

140. . . Built-in board

140A. . . First surface

140B. . . Second surface

1401. . . Front connection

1401a. . . First front connection

1401b. . . Second front connection

1401c. . . Third front connection

1401d. . . Fourth front connection

1401e. . . Fifth front connection

1401f. . . Sixth front connection

1401g. . . Seventh front connection

1401h. . . Eighth front connection

1402. . . Side connection

1402a. . . First side connection

1402b. . . Second side connection

1402c. . . Third side connection

1402d. . . Fourth side connection

1402e. . . Fifth side connection

1402f. . . Sixth side connection

1402g. . . Seventh side connection

1402h. . . Eighth side connection

1403. . . Placement hole

15. . . Isolation transformer

151. . . First isolation transformer

152. . . Second isolation transformer

153. . . Third isolation transformer

154. . . Fourth isolation transformer

16. . . Magnetic core

161. . . I-shaped magnetic core

162. . . Cover core

171. . . Primary coil

172. . . Secondary coil

18. . . Input

19. . . Center tap

20. . . Series transformer

201. . . First series transformer

202. . . Second series transformer

203. . . Third series transformer

204. . . Fourth series transformer

twenty one. . . capacitance

twenty two. . . resistance

twenty three. . . Intermediate plastic

230. . . Concave hole

twenty four. . . Docking terminal

241. . . Upper group docking terminal

242. . . Lower group butt terminal

25. . . Connection terminal

26. . . Pin terminal

27. . . Bottom board

28. . . Positioning plastic

280. . . Tab

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

The second figure is an exploded perspective view of the electrical connector in the first figure.

The third figure is a perspective view of the terminal module in the second figure.

The fourth figure is an exploded perspective view of the terminal module in the third figure.

The fifth figure is an exploded perspective view of another perspective of the terminal module in the third figure.

The sixth figure is a front view of the first surface of the built-in circuit board in the fourth figure.

The seventh figure is a front view of the second surface of the built-in circuit board in the fourth figure.

The eighth figure is a perspective view of the isolation transformer in the fourth figure.

The ninth figure is a front view of the built-in circuit board, the isolation transformer and the series transformer in the fourth figure.

The tenth figure is a front view of the built-in circuit board, capacitor and resistor in the fourth figure.

The eleventh figure is a working principle diagram of the electrical connector.

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to the first to eleventh drawings, the present invention is an electrical connector 10 for mounting on a horizontal external circuit board (not shown) formed with a plurality of differentials connected to a horizontal external circuit board. Signal channel. The electrical connector 10 includes an insulative housing 13 that is horizontally open to the front, a terminal module 14 that is mounted in the insulative housing 13 , and a mask housing that is wrapped around the insulative housing 13 . The mask housing includes a front mask housing 11 and a rear mask housing 12, and the front mask housing 11 and the rear mask housing 12 are held by snaps. The terminal module 14 includes a mating terminal 24 , a connecting terminal 25 , a pin terminal 26 , a plurality of circuit board components connected between the mating terminal 24 and the pin terminal 26 , and a holding terminal 24 and a connecting terminal 25 . The intermediate plastic 23, the docking terminal 24 includes an upper set of docking terminals 241 and a lower set of docking terminals 242, and the circuit board components are disposed corresponding to the respective sets of docking terminals 24, including an upper circuit board component and a lower circuit board component, The upper circuit board component is centrally symmetric with the lower circuit board component and is substantially aligned up and down. Each of the circuit board components includes a built-in circuit board 140 having a first surface 140A and a second surface 140B, and a plurality of electronic components mounted on the internal circuit board 140 for connecting the connection between the upper circuit board component and the lower circuit board component. One end of the terminal 25 is soldered to one of the built-in circuit boards 140, and the other end is passed through the other built-in circuit board 140. The connection terminals 25 are identical in structure. The insulative housing 13 is provided with two oppositely aligned butt sockets 130. The mating sockets 130 are inserted into the plugs in a horizontal direction. The mating sockets 130 each have four differential signal channels. The group docking terminal 241 and the lower group docking terminal 242 respectively extend forward into the corresponding mating sockets 130.

The built-in circuit board 140 is horizontally arranged, and is provided with a front connecting portion 1401 laterally arranged at a front edge of the built-in circuit board 140, and a side connecting portion 1402 and a side thereof which are arranged at one side of the built-in circuit board 140 in the front-rear direction. The connecting hole 1403 is located at the opposite side of the connecting portion 1402. The side connecting portion 1402 is a first to eighth side connecting portion (1402a to 1402h) from the front to the rear, and the front connecting portion 1401 is sequentially adjacent to the side connecting portion 1402. For the first to eighth front connecting portions (1401a to 1401h), the first and second side connecting portions (1402a, 1402b) and the first and second front connecting portions (1401a, 1401b) are connected to the first differential signal path. The third and fourth side connecting portions (1402c, 1402d) and the third and fourth front connecting portions (1401c, 1401d) are connected to the second differential signal path, the fifth and sixth side connecting portions (1402e, 1402f) and The fifth and sixth front connecting portions (1401e, 1401f) are connected to the third differential signal path, and the seventh and eighth side connecting portions (1402g, 1402h) and the seventh and eighth front connecting portions (1401g, 1401h) are connected to The fourth differential signal path. The electronic component includes four isolation transformers 15 and four series transformers 20 respectively connected between the differential signal channels, and the isolation transformer 15 and the series transformer 20 are disposed on the same side of the built-in circuit board 140 near the intermediate plastic 23 And the lateral direction of the isolation transformer 15 is parallel to the front-back direction of the electrical connector 10, and is disposed away from the side connection portion 1402. The isolation transformers 15 and the series transformers 20 are surface-mounted to the built-in circuit board 140. The isolation transformers 15 are, in order from the front to the rear, a first isolation transformer 151, a second isolation transformer 152, and a third isolation transformer 153. The fourth isolation transformer 154 is a first series transformer 201, a second series transformer 202, a third series transformer 203, a fourth series transformer 204, and the first isolation transformer 151 is connected in series with the first series. The transformer 201 is connected to the first differential signal channel, the second isolation transformer 152 and the second series transformer 202 are connected to the second differential signal channel, and the third isolation transformer 153 and the third series transformer 203 are connected to the third differential signal channel, and the fourth The isolation transformer 154 and the fourth series transformer 204 are connected to the fourth differential signal path. Each of the isolation transformers 15 includes a primary side coil 171 connected to the butt terminal 24, a chip terminal for connecting the primary side coil 171 to the built-in circuit board 140, a secondary side coil 172 connected to the pin terminal 26, and The secondary winding 172 is connected to the patch terminal of the built-in circuit board 140, and each of the series transformers 20 is also provided with a corresponding patch terminal that connects the corresponding transformer coil to the built-in circuit board 140, which causes the isolation transformer 15 The series transformer 20 can be mounted on the built-in circuit board 140 in a chip form, which simplifies the manufacturing and installation process of the transformer and saves costs. The upper group butt terminal 241 and the lower group butt terminal 242 are respectively connected to corresponding patch terminals of the isolating transformer 15 through the front connecting portion 1401 of the corresponding circuit board component, and the connecting terminal 25 corresponds to both sides of the built-in circuit board 140. Along the arrangement, one end of the connection terminal 25 at one side is connected to the corresponding patch terminal of the series transformer 20 through the side connection portion 1402 of the upper circuit board component, and the other end penetrates the yield hole 1403 of the lower circuit board component, and the other end One end of the connecting terminal 25 of the side edge penetrates the receiving hole 1403 of the upper circuit board component, and the other end is connected to the corresponding patch terminal of the series transformer 20 through the side connecting portion 1402 of the lower circuit board component, and the series transformer 20 is connected to The secondary winding 172 of the isolation transformer 15 and the pin terminal 26 are used to filter common mode noise.

The isolation transformer 15 includes a magnetic core 16 , and the magnetic core 16 of the isolation transformer 15 includes an I-shaped magnetic core 161 having an intermediate winding portion and a cover magnetic core 162 disposed on the I-shaped magnetic core 161. The primary coil 171 and the secondary coil 172 are wound around the winding portion of the I-shaped magnetic core 161, and the winding portion extends in the longitudinal direction. Both the primary coil 171 and the secondary coil 172 have two input ends 18 and a center tap 19, and the two input ends 18 connecting the primary coil 171 and the patch terminals of the center tap 19 are distributed on the lateral side of the lateral side of the isolation transformer 15 in opposite directions. The two input ends 18 connecting the secondary winding 172 and the patch terminals of the center tap 19 are distributed at opposite longitudinal ends of the isolation transformer 15 on the opposite side of the other side, and the isolation transformers 15 are laterally aligned and arranged in parallel on the built-in circuit board 140. On the first surface 140A, the patch terminal of the primary winding 171 of the first isolation transformer 151 is closer to the front connecting portion 1401, and the patch terminal of the secondary winding 172 of the second isolation transformer 152 is closer to the first isolation transformer. 151. The chip terminal of the primary isolation coil 153 of the third isolation transformer 153 is closer to the second isolation transformer 152, and the patch terminal of the secondary isolation coil 154 of the fourth isolation transformer 154 is closer to the third isolation transformer 153. The first surface 140A of the built-in circuit board 140 is provided with conductive lines connected to the third and sixth front connecting portions (1401c, 1401f), and the conductive lines extend rearward beyond the primary winding 171 of the first isolation transformer 151. Patch terminal. The built-in circuit board 140 is provided with a conductive line connected to the fourth and fifth front connecting portions (1401d, 1401e) on the second surface 140B opposite to the first surface 140A. The two conductive lines extend rearward in parallel to the third connection. The isolation terminal of the primary winding 171 of the transformer 153 is at the patch terminal. The second surface 140B is further provided with a conductive line connected to the seventh and eighth front connecting portions (1401g, 1401h), and the two conductive lines extend rearward in parallel to the patch terminal connecting the primary winding 171 of the fourth isolation transformer 154. At the office. Since the primary coil 171 corresponds to the corresponding high pressure zone during the operation of the electrical connector 10, the secondary coil 172 corresponds to the corresponding low pressure zone, and the shortest distance between the high pressure zone and the low pressure zone is not less than 1.5 mm, so the design avoids The high voltage zone and the low pressure zone cause a discharge phenomenon due to the short distance.

The electronic component further includes a capacitor 21 and four resistors 22 in a unitary structure. The capacitor 21 and the four resistors 22 of the overall structure are disposed on the second surface 140B of the built-in circuit board 140. The four resistors 22 One end of each of the isolation transformers 15 is electrically connected to the center tap 19 of the primary winding 171, and the other end is connected in parallel to one pole of the capacitor 21, and the other pole of the capacitor 21 is grounded. The resistor 22 is disposed on a side of the capacitor 21 away from the side connecting portion 1402, and a pole of the capacitor 21 being grounded is disposed adjacent to the side connecting portion 1402.

The terminal module 14 further includes a bottom circuit board 27 connecting the pin terminals 26, and a positioning plastic 28 disposed between the lower built-in circuit board and the bottom circuit board 27. The positioning plastic 28 fixes the pin terminal 26, and The positioning of the connection terminal 25 is provided to facilitate the mounting of the connection terminal 25 and the bottom circuit board 27. The built-in circuit board 140 is substantially rectangular, and is provided with a notch at two corners of the oblique symmetry. The lower built-in circuit board is disposed between the intermediate plastic 23 and the positioning plastic 28, and the intermediate plastic 23 corresponds to A recessed hole 230 is defined in the notch, and the positioning plastic 28 is provided with a stud 280 at a corresponding notch, and the recessed hole 230 and the stud 280 are engaged at the notch.

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 within the scope of the following patent application.

140A. . . First surface

1401a. . . First front connection

1401b. . . Second front connection

1401c. . . Third front connection

1401f. . . Sixth front connection

151. . . First isolation transformer

152. . . Second isolation transformer

153. . . Third isolation transformer

154. . . Fourth isolation transformer

171. . . Primary coil

172. . . Secondary coil

201. . . First series transformer

202. . . Second series transformer

203. . . Third series transformer

204. . . Fourth series transformer

Claims (10)

An electrical connector formed with a plurality of differential signal channels including a plurality of pairs of docking terminals as one end of each differential signal path, a plurality of butt pins as the other ends of the differential signal channels, and a connection terminal and pin terminal a circuit board component, the circuit board component comprising a built-in circuit board, and a plurality of electronic components mounted on the built-in circuit board, the electronic component comprising a plurality of isolation transformers respectively connected between the differential signal channels, wherein each isolation transformer comprises a magnetic core, a primary side coil connecting the mating terminal, a patch terminal for connecting the primary side coil to the built-in circuit board, a secondary side coil connecting the pin terminal, and a patch for connecting the secondary side coil to the built-in circuit board The terminal and the chip terminal enable the isolation transformer to be mounted on the built-in circuit board in a chip form, and the primary coil and the secondary coil have two input ends and a center tap, and the two input ends of the primary coil and the patch terminal of the center tap are distributed. On the opposite ends of the lateral side of the isolation transformer, the two input ends of the secondary coil are connected to the center tap The terminals are distributed on opposite ends of the isolation transformer laterally opposite to the other side, and the isolation transformers are laterally aligned in parallel on the first surface of the built-in circuit board, and the two isolation transformers adjacent to each other are connected to the primary coil patch terminals. One side is opposite to each other or opposite to each other. The electrical connector of claim 1, wherein the electrical connector is mounted to a horizontal external circuit board and includes an insulative housing having a horizontally forward opening for a plug to be inserted back horizontally In the opening, the built-in circuit board is horizontally arranged, and has a front connecting portion laterally arranged at a front edge of the built-in circuit board, and a side connecting portion arranged at a side edge of the built-in circuit board in a front-rear direction, the mating terminal passing The front connecting portion is connected to a corresponding chip terminal of the isolation transformer, and the pin terminal is connected to a corresponding chip terminal of the isolation transformer through a side connecting portion. The electrical connector of claim 2, wherein the isolation transformer core comprises an I-shaped magnetic core having an intermediate winding portion and a cover magnetic core covered on the I-shaped magnetic core, the original The side coil and the secondary side coil are wound around the winding portion of the I-shaped magnetic core, and the winding portion extends in the longitudinal direction. The electrical connector of claim 3, wherein each of the docking jacks has four differential signal channels, and a filter is connected between the secondary coil and the pin terminal of the isolation transformer in each differential signal channel. In addition to the series transformer of common mode noise, and the lateral direction of the isolation transformer is parallel to the front and rear direction of the electrical connector, and is disposed away from the side connection portion, the series transformer is disposed on the same side of the built-in circuit board near the side connection portion. The electrical connector of claim 4, wherein the side connecting portion is a first to eighth side connecting portion from the front to the rear, and the front connecting portion is first to eighth from the side connecting portion. a front connecting portion, wherein the first and second side connecting portions and the first and second front connecting portions are connected to the first differential signal path, and the third and fourth side connecting portions and the third and fourth front connecting portions are connected to the first a second differential signal path, the fifth and sixth side connecting portions and the fifth and sixth front connecting portions are connected to the third differential signal channel, and the seventh and eighth side connecting portions and the seventh and eighth front connecting portions are connected to the first Four differential signal channels. The electrical connector of claim 5, wherein the isolation transformers are first to fourth isolation transformers from front to back, and the first isolation transformer is connected to the first differential signal channel, and the second isolation transformer is connected. In the second differential signal path, the third isolation transformer is connected to the third differential signal channel, the fourth isolation transformer is connected to the fourth differential signal channel, and the chip terminal connected to the primary winding of the first isolation transformer is closer to the front connection portion. And the first surface of the built-in circuit board is provided with a plurality of conductive lines connecting at least part of the front connecting portions, and the plurality of conductive lines extend rearward beyond the patch terminals connecting the primary windings of the first isolation transformer. The electrical connector of claim 6, wherein the built-in circuit board is provided with a conductive line connecting the seventh and eighth front connecting portions on the second surface opposite to the first surface, the two conductive lines It extends back in parallel to the patch terminal that connects the primary winding of the fourth isolation transformer. The electrical connector of claim 6, wherein the electronic component further comprises a capacitor and four resistors in a unitary structure, the capacitor and the overall structure of the four resistors being disposed on the second of the built-in circuit board. On the surface, one end of the four resistors is electrically connected to the center tap of the primary winding of each isolation transformer, and the other end is connected in parallel to one pole of the capacitor, and the other pole of the capacitor is grounded. The electrical connector of claim 8, wherein the resistor is disposed on a side of the capacitor away from the side connection portion, and a pole of the capacitor ground is disposed adjacent to the side connection portion. The electrical connector of claim 2, wherein the electrical connector is provided with a pair of upper and lower aligned butt sockets, and the insulating body is provided with the corresponding opening.