CN103872529B - Electric connector - Google Patents

Abstract

An electrical connector used to be installed on a horizontal circuit board, which has a receiving chamber for a mating plug to be inserted and fitted, and forms a plurality of differential signal channels connecting the aforementioned mating plug to a horizontal circuit board, the electrical connector It includes an insulating body and a terminal module mounted on the insulating body. The terminal module includes a number of docking terminals extending into the docking socket and pin terminals for connecting to a horizontal circuit board. The terminal module also includes connecting The upper circuit board assembly and the lower circuit board assembly between the docking terminal and the pin terminal, the upper circuit board assembly includes an upper built-in circuit board and a number of electronic components installed on the upper built-in circuit board, and the lower circuit board assembly includes The lower built-in circuit board and a number of electronic components installed on the lower built-in circuit board, the upper built-in circuit board and the lower built-in circuit board are arranged parallel to the horizontal direction and roughly aligned in the vertical direction.

Description

electrical connector

【Technical field】

The invention relates to an electrical connector, in particular to an electrical connector with an isolation transformer installed on a built-in circuit board.

【Background technique】

Chinese Patent No. CN101908682B published on May 23, 2012 discloses an electrical connector, the electrical connector is installed on the main circuit board, the electrical connector includes an insulating body and a terminal die accommodated in the insulating body The terminal module further includes a built-in circuit board perpendicular to the main circuit board, a docking terminal mated with a docking connector, and a transfer terminal group arranged under the docking terminal and the built-in circuit board, and the built-in circuit board has On the contrary, the inner surface and the outer surface are arranged, the inner surface is provided with a plurality of magnetic coils, and the outer surface is provided with an indicator light and a plurality of electronic components for indicating the working state.

【Content of invention】

The technical problem to be solved by the present invention is to provide an electrical connector with simpler manufacturing process and lower manufacturing cost of the magnetic module.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

An electrical connector used to be installed on a horizontal circuit board, which has a receiving chamber for a mating plug to be inserted and fitted, and forms a plurality of differential signal channels connecting the aforementioned mating plug to a horizontal circuit board, the electrical connector It includes an insulating body and a terminal module mounted on the insulating body. The terminal module includes a number of docking terminals extending into the docking socket and pin terminals for connecting to a horizontal circuit board. The terminal module also includes connecting The upper circuit board assembly and the lower circuit board assembly between the docking terminal and the pin terminal, the upper circuit board assembly includes an upper built-in circuit board and a number of electronic components installed on the upper built-in circuit board, and the lower circuit board assembly includes The lower built-in circuit board and some electronic components installed on the lower built-in circuit board, the upper built-in circuit board and the lower built-in circuit board are arranged parallel to the horizontal direction and roughly aligned in the vertical direction.

Compared with the prior art, the built-in circuit board of the electrical connector is equipped with a chip-type isolation transformer. This design not only meets the requirements for the space occupied by the magnetic module, but also simplifies the manufacturing process and reduces the manufacturing cost.

Other specific features of the present invention are as follows:

The electronic components include a plurality of isolation transformers mounted on at least one of the built-in circuit boards by surface welding, and each isolation transformer includes a primary coil connected to a butt terminal and a secondary coil connected to a pin terminal.

The electrical connector has two butt sockets that are aligned up and down and open forward, and also includes an upper set of butt terminals and a lower set of butt terminals. Docking socket.

Each of the built-in circuit boards is provided with a front connection portion arranged laterally on the front edge of the built-in circuit board, and a side connection portion arranged on one side of the built-in circuit board along the front and back direction, and each isolation transformer is provided with a coil for connecting the primary side and the secondary side. The coil is connected to the SMD terminal of the built-in circuit board, the butt terminal is connected to the corresponding SMD terminal of the primary coil of the isolation transformer through the front connection part, and the pin terminal is connected to the secondary coil of the isolation transformer through the side connection part. Corresponding to patch terminals.

The terminal module includes a bottom circuit board connected to the pin terminals and a connecting terminal connecting the bottom circuit board to the corresponding built-in circuit board, and the secondary coil of the isolation transformer is connected to the built-in circuit board, the connecting terminal, and the bottom circuit board in turn. to pin terminals.

The terminal module also includes an intermediate plastic disposed between the upper built-in circuit board and the lower built-in circuit board, and the upper group of butt terminals, the lower group of butt terminals, and the connecting terminals are fixed to the middle plastic.

The terminal module also includes positioning plastic disposed between the lower built-in circuit board and the bottom circuit board. The positioning plastic fixes the pin terminals and provides positioning of the connecting terminals, so as to facilitate the installation of the connecting terminals and the bottom circuit board.

The electrical connector has a docking socket, and the docking terminals are inserted into the docking socket, wherein some of the docking terminals are connected to the upper built-in circuit board, and some of the docking terminals are connected to the lower built-in circuit board.

The electrical connector is provided with four differential signal channels, and each differential signal channel is connected with one of the aforementioned isolation transformers, and two isolation transformers are arranged on the upper surface of the lower built-in circuit board, and two isolation transformers are arranged on the upper surface of the upper circuit board. lower surface.

The primary side coils of the isolation transformers all have center taps, and the center taps are connected to a resistor and then jointly connected to one pole of a capacitor, the other pole of the capacitor is grounded, and the resistors are arranged in parallel to form an exclusionary resistance. The above-mentioned exclusion and capacitance are arranged on the upper surface of the upper built-in circuit board.

【Description of drawings】

FIG. 1 is a perspective view of an electrical connector according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the electrical connector shown in FIG. 1 .

FIG. 3 is a perspective view of the terminal module shown in FIG. 2 .

FIG. 4 is an exploded perspective view of the terminal module shown in FIG. 3 .

FIG. 5 is an exploded perspective view of another viewing angle of the terminal module shown in FIG. 3 .

FIG. 6 is a front view of the first surface of the built-in circuit board shown in FIG. 4 .

FIG. 7 is a front view of the second surface of the built-in circuit board shown in FIG. 4 .

FIG. 8 is a perspective view of the isolation transformer shown in FIG. 4 .

Fig. 9 is a front view of the built-in circuit board, the isolation transformer and the common mode filter shown in Fig. 4 .

Fig. 10 is a front view of the built-in circuit board, capacitor and resistor shown in Fig. 4 after matching.

Fig. 11 is a working principle diagram of the electrical connector of the first embodiment.

FIG. 12 is a perspective view of an electrical connector according to a second embodiment of the present invention.

FIG. 13 is an exploded perspective view of the electrical connector shown in FIG. 12 .

FIG. 14 is an exploded perspective view of the electrical connector shown in FIG. 12 from another perspective.

FIG. 15 is an enlarged view of some components of the electrical connector shown in FIG. 14 .

FIG. 16 is an exploded perspective view of some components shown in FIG. 15 .

FIG. 17 is a front view of the upper surface of the upper circuit board assembly shown in FIG. 16 .

FIG. 18 is a front view of the lower surface of the upper circuit board assembly shown in FIG. 16. FIG.

FIG. 19 is a front view of the upper surface of the lower circuit board assembly shown in FIG. 16 .

FIG. 20 is a front view of the lower surface of the lower circuit board assembly shown in FIG. 16 .

Fig. 21 is a working principle diagram of the electrical connector of the second embodiment.

[Description of main component symbols]

Electrical Connector 10,10'

Front Shield Housing 11,11'

Rear Shield Housing 12,12'

Insulation body 13

Front Insulation Body 131'

First Containment Tank 132'

1st Horizontal Support 133'

Second tank 134'

Rear Insulation Body 135'

2nd Horizontal Support 136'

Third Containment Tank 137'

Docking socket 130,130'

Terminal block 14,14'

Built-in circuit board 140

Upper built-in circuit board 141'

Lower built-in circuit board 142'

First surface 140A

Second surface 140B

Front Connection 1401, 1401'

First front connection part 1401a

Second front connection part 1401b

Third front connection part 1401c

Fourth Front Connection 1401d

Fifth Front Connection 1401e

The sixth front connection part 1401f

The seventh front connection part 1401g

The eighth front connection part 1401h

Side connection 1402

First side connecting portion 1402a

Second side connecting portion 1402b

Third side connecting portion 1402c

Fourth side connecting portion 1402d

Fifth side connection 1402e

Sixth side connection part 1402f

Seventh side connection part 1402g

Eighth side connection part 1402h

Give way hole 1403

Rear connection 1404'

Isolation Transformer 15,15'

First isolation transformer 151

Second isolation transformer 152

Tertiary isolation transformer 153

Fourth isolation transformer 154

Core 16

I-shape core 161

Cover core 162

Primary Coil 171,171'

Secondary Coil 172,172'

Input 18

Center tap 19,19'

Common Mode Filter 20,20'

First common mode filter 201

Second common mode filter 202

Third common mode filter 203

Fourth common mode filter 204

Capacitor 21,21'

Resistance 22,22'

Intermediate plastic 23

Recessed hole 230

Butt terminal 24,24'

Upper set of docking terminals 241

Lower group of docking terminals 242

Connection terminal 25,25'

Pin terminal 26

1st pin terminal 261'

2nd pin terminal 262'

bottom circuit board 27

positioning plastic 28

Boss 280

LED device 29

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

【detailed description】

1 to 11, it shows an electrical connector 10 according to the first embodiment of the present invention, which is used to be installed on a horizontal external circuit board (not shown), and it is formed to connect to the horizontal external circuit board. Several differential signal channels. The electrical connector 10 includes an insulating body 13 with a horizontal opening, a terminal module 14 installed in the insulating body 13 , and a shielding shell covering the insulating body 13 . The shielding case includes a front shielding case 11 and a rear shielding case 12 , and the front shielding case 11 and the rear shielding case 12 are held by buckles. The terminal module 14 includes a docking terminal 24, a connecting terminal 25, a pin terminal 26, a number of circuit board components connected between the docking terminal 24 and the pin terminal 26, and a device for holding the docking terminal 24 and the connecting terminal 25. The middle plastic 23, the butt terminals 24 include an upper group of butt terminals 241 and a lower group of butt terminals 242, each of the circuit board components is set corresponding to each group of butt terminals 24, which includes an upper circuit board component and a lower circuit board component, the The upper circuit board assembly and the lower circuit board assembly are arranged symmetrically about the center and roughly aligned up and down. Each circuit board assembly includes a built-in circuit board 140 with a first surface 140A and a second surface 140B, and a number of electronic components mounted on the built-in circuit board 140 for connecting the upper circuit board assembly and the lower circuit board assembly One end of the terminal 25 is soldered to one of the corresponding built-in circuit boards 140 , and the other end passes through the other built-in circuit board 140 . The connecting terminals 25 have the same structure. The insulating body 13 is provided with upper and lower rows of docking sockets 130 that are aligned respectively. The docking sockets 130 are used for a plug to be inserted and fitted backwards along the horizontal direction. Each of the docking sockets 130 has four differential signal channels. The upper group of docking terminals 241 and the lower group of docking terminals 242 respectively extend forward into the corresponding docking sockets 130 .

The built-in circuit board 140 is arranged horizontally, and is provided with a front connecting portion 1401 arranged laterally on the front edge of the built-in circuit board 140, a side connecting portion 1402 arranged on a side edge of the built-in circuit board 140 along the front-to-rear direction, and a side connection portion 1402 connected to the side edge of the built-in circuit board 140. The relief hole 1403 on the opposite side of the connecting part 1402, the side connecting part 1402 is the first to the eighth side connecting parts (1402a~1402h) from front to back, and the front connecting part 1401 is close to the side connecting part 1402 There are first to eighth front connection parts (1401a~1401h) in order, and their first and second side connection parts (1402a, 1402b) and first and second front connection parts (1401a, 1401b) are connected to the first differential signal Channel, third and fourth side connections (1402c, 1402d) and third and fourth front connections (1401c, 1401d) are connected to second differential signal channel, fifth and sixth side connections (1402e, 1402f) And the fifth and sixth front connection parts (1401e, 1401f) are connected to the third differential signal channel, the seventh and eighth side connection parts (1402g, 1402h) and the seventh and eighth front connection parts (1401g, 1401h) are connected on the fourth differential signal channel. The electronic components include four isolation transformers 15 and four common-mode filters 20 respectively connected to the middle of each differential signal channel, and the isolation transformers 15 and the common-mode filters 20 are arranged on the built-in circuit board 140 close to the middle plastic 23 , and the lateral direction of the isolation transformer 15 is parallel to the front and rear direction of the electrical connector 10 , and is set away from the side connecting portion 1402 . The isolation transformers 15 and the common mode filters 20 are mounted on the built-in circuit board 140 by surface welding, and the isolation transformers 15 are the first isolation transformer 151, the second isolation transformer 152, and the third isolation transformer 151 from front to back. Transformer 153, fourth isolation transformer 154, the common-mode filters 20 are the first common-mode filter 201, the second common-mode filter 202, the third common-mode filter 203, and the fourth common-mode filter 20 from front to back. filter 204, and the first isolation transformer 151 and the first common-mode filter 201 are connected to the first differential signal channel, the second isolation transformer 152 and the second common-mode filter 202 are connected to the second differential signal channel, and the third isolation The transformer 153 and the third common-mode filter 203 are connected to the third differential signal channel, and the fourth isolation transformer 154 and the fourth common-mode filter 204 are connected to the fourth differential signal channel. Each of the isolation transformers 15 includes a primary coil 171 connected to the docking terminal 24 and a patch terminal for connecting the primary coil 171 to the built-in circuit board 140, a secondary coil 172 connected to the pin terminal 26, and a The secondary coil 172 is connected to the SMD terminal of the built-in circuit board 140, and each common mode filter 20 is also provided with a corresponding SMD terminal connected to the corresponding transformer coil to the built-in circuit board 140, and the SMD terminal makes the isolation The transformer 15 and the common-mode filter 20 can be chip-mounted on the built-in circuit board 140 , which simplifies the manufacturing and installation process of the transformer and saves costs. The upper group of docking terminals 241 and the lower group of docking terminals 242 are respectively connected to the corresponding SMD terminals of the isolation transformer 15 through the front connecting portion 1401 of the corresponding circuit board assembly, and the connecting terminals 25 correspond to both sides of the built-in circuit board 140 One end of the connection terminal 25 on one side is connected to the corresponding patch terminal of the common mode filter 20 through the side connection part 1402 of the upper circuit board assembly, and the other end passes through the relief hole 1403 of the lower circuit board assembly. One end of the connection terminal 25 on the other side passes through the relief hole 1403 of the upper circuit board assembly, and the other end is connected to the corresponding patch terminal of the common mode filter 20 through the side connection part 1402 of the lower circuit board assembly. The mode filter 20 is connected between the secondary coil 172 of the isolation transformer 15 and the pin terminal 26 for filtering 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 with an intermediate winding portion and a cover plate magnetic core 162 covering the I-shaped magnetic core 161. The primary coil 171 and the secondary coil 172 are wound on the winding portion of the I-shaped magnetic core 161 , and the winding portion extends longitudinally. Both the primary side coil 171 and the secondary side coil 172 have two input terminals 18 and a center tap 19, and the chip terminals connected to the two input terminals 18 of the primary side coil 171 and the center tap 19 are distributed on the horizontal side of the isolation transformer 15 and on the vertically opposite side. SMD terminals connecting the two input terminals 18 of the secondary coil 172 and the center tap 19 are distributed on the opposite ends of the isolation transformer 15 on the opposite side in the transverse direction, and the isolation transformers 15 are horizontally aligned and arranged in parallel on the built-in circuit board 140 On the first surface 140A of the first isolation transformer 151, the patch terminal of the primary coil 171 is closer to the front connection part 1401, and the patch terminal of the secondary coil 172 of the second isolation transformer 152 is closer to the first isolation transformer. 151 , the patch terminal of the primary coil 171 of the third isolation transformer 153 is closer to the second isolation transformer 152 , and the patch terminal of the secondary coil 172 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 connection parts (1401c, 1401f), and the conductive lines extend backwards no more than the primary side coil 171 connected to the first isolation transformer 151 SMD terminals. The built-in circuit board 140 is provided with conductive lines connected to the fourth and fifth front connecting parts (1401d, 1401e) on the second surface 140B opposite to the first surface 140A. Three isolation transformers 153 are located at the SMD terminal of the primary side coil 171 . The second surface 140B is also provided with conductive lines connected to the seventh and eighth front connecting parts (1401g, 1401h), and these two conductive lines extend backwards in parallel to the patch connected to the primary side coil 171 of the fourth isolation transformer 154 at the terminal. Since during the working process of the electrical connector 10, the primary side coil 171 corresponds to the corresponding high-voltage area, the secondary side coil 172 corresponds to the corresponding low-voltage area, and the shortest distance between the high-voltage area and the low-voltage area is not less than 1.5 mm, so this design avoids The discharge phenomenon is caused by the short distance between the high-voltage area and the low-voltage area.

The electronic component also includes a capacitor 21 and four resistors 22 in an overall structure, the capacitor 21 and the four resistors 22 of the overall structure are arranged on the second surface 140B of the built-in circuit board 140, and the four resistors 22 One end of each is electrically connected to the center tap 19 of the primary coil 171 of each isolation transformer 15, 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 connecting portion 1402 , and the grounded end of the capacitor 21 is disposed close to the connecting portion 1402 .

The terminal module 14 also includes a bottom circuit board 27 connected to 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 terminals 26, and The positioning of the connection terminal 25 is provided to facilitate the installation of the connection terminal 25 and the bottom circuit board 27 . The built-in circuit board 140 is roughly rectangular in shape, and has gaps at its obliquely symmetrical corners. The lower built-in circuit board is placed between the middle plastic 23 and the positioning plastic 28, and the middle plastic 23 corresponds to A concave hole 230 is provided at the notch, and the positioning plastic 28 is provided with a protrusion 280 at the corresponding notch, and the concave hole 230 is matched with the protrusion 280 at the notch.

12 to 21, it shows an electrical connector 10' according to the second embodiment of the present invention. The electrical connector 10' is used to be installed on a horizontal circuit board (not shown), which has The mating socket 130 ′ can be inserted into the mating socket 130 ′, and the electrical connector 10 ′ includes an insulating body, a terminal module 14 ′ mounted on the insulating body, and a shielding shell covering the outer side of the insulating body. The insulating body includes a front insulating body 131' and a rear insulating body 135'. The front insulating body 131' has a receiving cavity for mating plugs to be inserted and fitted, and a number of first terminals located at the rear end of the receiving cavity for receiving terminals. The receiving groove 132', the bottom of the front insulating body 131' has a first horizontal support part 133' with a gear-shaped edge for supporting the terminal module 14', and the first horizontal support part 133' has a gear-shaped edge A second receiving groove 134' is provided at the inward recess, and the rear insulating body 135' has a second horizontal support portion 136' with a gear-shaped edge, and a gear-shaped edge of the second horizontal support portion 136' is provided at the inward recess. There is a third receiving tank 137'. The terminal module 14' includes a number of docking terminals 24' extending into the aforementioned receiving cavity, pin terminals for connecting to a horizontal circuit board, an upper circuit board assembly and an upper circuit board assembly connected between the docking terminals 24' and the pin terminals. The lower circuit board assembly and the connecting terminal 25' connecting the upper circuit board assembly and the lower circuit board assembly, the butt joint terminal 24' is held in the aforementioned first receiving groove 132', and the pin terminals include a first pin terminal 261 'and the second pin terminal 262', the first pin terminal 261' is held in the second receiving groove 134', the second pin terminal 262' is held in the third receiving groove 137', the The front insulating body 131' is interference-fitted with the rear insulating body 135' through a gear-shaped edge. The shielding shell includes a front shielding shell 11 ′ and a rear shielding shell 12 ′, and the front shielding shell 11 ′ and the rear shielding shell 12 ′ are held by buckles. The electrical connector 10' further includes LED devices 29, and the LED devices 29 are mounted on both sides of the lower end of the front insulating body 131'.

The upper circuit board assembly includes an upper built-in circuit board 141' and some electronic components installed on the upper built-in circuit board 141', and the lower circuit board assembly includes a lower built-in circuit board 142' and a number of electronic components installed on the lower built-in circuit board 142'. For several electronic components, the upper built-in circuit board 141' and the lower built-in circuit board 142' are arranged parallel to the horizontal direction and roughly aligned in the vertical direction. Each of the built-in circuit boards is provided with a front connecting portion 1401 ′ arranged transversely at the front edge of the built-in circuit board, and a rear connecting portion 1404 ′ arranged transversely at the rear edge of the built-in circuit board. The electronic components include an isolation transformer 15', a common-mode filter 20', a resistor 22', and a capacitor 21'. Both the isolation transformer 15' and the common-mode filter 20' are provided with patches for connecting to a built-in circuit board terminals, the two isolation transformers 15' and the two common-mode filters 20' are mounted on the lower surface of the upper built-in circuit board 141' by surface welding, and the two isolation transformers 15' and the two common-mode filters 20' is mounted on the upper surface of the lower built-in circuit board 142' by surface welding, and each isolation transformer 15' includes a primary coil 171' connected to the butt terminal 24' and a secondary coil 172' connected to the pin terminal 26' , the primary coil 171 ′ and the secondary coil 172 ′ are connected to the built-in circuit board through the aforementioned patch terminals. The resistors 22' are arranged in parallel to form a resistance, and the resistance and the capacitor 21' are arranged on the upper surface of the upper built-in circuit board 141'.

The electrical connector 10' is provided with four differential signal channels, and each differential signal channel is connected to the aforementioned isolation transformer 15' and the aforementioned common-mode filter 20'. The front connecting part 1401' of the upper built-in circuit board 141' is ten through holes arranged horizontally, one through hole on each side is a welding hole for welding the connecting terminal 25', and the eight through holes in the middle are Four are welding holes for welding the butt terminal 24', and the remaining four are relief holes for penetrating the butt terminal 24'; the rear connection part 1404' of the upper built-in circuit board 141' is also a ten six through holes, six of which are welding holes for welding the pin terminals, and the remaining four are relief holes for penetrating the pin terminals. The front connecting part 1401' of the lower built-in circuit board 142' is ten through holes arranged horizontally, and one through hole on each side is a welding hole for welding the connection extending downward from the upper built-in circuit board 141'. Terminal 25', four of the eight through holes in the middle are welding holes for welding the butt terminals 24' extending downward after passing through the upper built-in circuit board 141', and the remaining four are relief holes for penetrating through the corresponding The butt joint terminal 24' extending downward from the upper built-in circuit board 141'; the rear connection part 1404' of the lower built-in circuit board 142' is also ten through holes arranged in a horizontal direction, and six of the ten through holes are Welding holes, four of the six welding holes are used for welding the pin terminals extending downwards after passing through the upper built-in circuit board 141', and the other two of the six welding holes are used for soldering corresponding to the upper built-in circuit board 141' For the pin terminals extending downward, the remaining four of the ten through holes are relief holes for penetrating through corresponding pin terminals extending downward from the upper built-in circuit board 141 ′. The docking terminal 24' is connected to the corresponding patch terminal of the primary side coil 171' of the isolation transformer 15' through the front connection part 1401', and the pin terminal is connected to the secondary side of the isolation transformer 15' through the rear connection part 1404'. Corresponding SMD terminal of coil 172'. The primary side coils 171' of each of the isolation transformers 15' have a center tap 19', each of the center taps 19' is connected to a resistor 22' and then connected to one pole of a capacitor 21', and the other pole of the capacitor 21' One pole is grounded.

Claims (9)

1. an electric connector, in order to be installed on a horizontal circuit boards, its have be available for a banjo insert Enter the host cavity coordinated, and be formed and connect aforementioned banjo to some differential signals of horizontal circuit boards Passage, described electric connector includes insulating body and is installed in the terminal module of insulating body, described terminal Module includes extending into the some docking terminals to plug receptacle and in order to be connected to connecing of horizontal circuit boards Foot, it is characterised in that: described terminal module also includes being connected to dock between terminal and pin terminal Upper circuit board assemblies and lower circuit board assemblies, described upper circuit board assemblies includes internal circuit board and peace Be loaded on some electronic components of internal circuit board, described lower circuit board assemblies include lower internal circuit board and Being installed on some electronic components of lower internal circuit board, upper internal circuit board is parallel to lower internal circuit board Horizontally arranged and substantially aligned at vertical direction, described electronic component includes in surface soldered mode Being installed on some isolating transformers of at least a part of which one internal circuit board, each isolating transformer includes being connected to The primary coil of docking terminal, the secondary coil being connected to pin terminal and connection primary coil and secondary line Enclosing the patching terminal to internal circuit board, described patching terminal makes described isolating transformer SMD to pacify It is loaded on internal circuit board.

2. electric connector as claimed in claim 1, it is characterised in that: described electric connector has up and down Alignment and to the two of open front pairs of plug receptacles, also include group docking terminal and lower group docking terminal, upper group Docking terminal docks terminal and includes aforementioned some docking terminals respectively with lower group, and insert respectively aforementioned two right Plug receptacle.

3. electric connector as claimed in claim 2, it is characterised in that: described each internal circuit board is provided with The transversely arranged front connecting portion in edge, internal circuit board front and be arranged in internal circuit board along the longitudinal direction The side connecting portion on edge, side, described docking terminal connects the former limit of described isolating transformer by front connecting portion The corresponding patching terminal of coil, described pin terminal connects described isolating transformer secondary by side connecting portion The corresponding patching terminal of coil.

4. electric connector as claimed in claim 3, it is characterised in that: described terminal module includes connecting The base circuit board of pin terminal and the connection terminal of the most corresponding internal circuit board of connection base circuit board, institute The secondary coil stating isolating transformer passes sequentially through internal circuit board, connection terminal and base circuit board even It is connected to pin terminal.

5. electric connector as claimed in claim 4, it is characterised in that: described terminal module also includes setting Be placed in the middle plastic cement between internal circuit board and lower internal circuit board, described upper group of docking terminal, under Group docking terminal, connection terminal are fixed on middle plastic cement.

6. electric connector as claimed in claim 5, it is characterised in that: described terminal module also includes setting The location plastic cement being placed between lower internal circuit board and base circuit board, described location plastic cement fixed pin end Son, and the location connecting terminal is provided, in order to connect the installation of terminal and base circuit board.

7. electric connector as claimed in claim 1, it is characterised in that: described electric connector has a pair Plug receptacle, described some docking terminals be all plugged in this in plug receptacle, wherein part docking terminal connects In upper internal circuit board, part docking terminal is connected to lower internal circuit board.

8. electric connector as claimed in claim 7, it is characterised in that: described electric connector is provided with four Differential signal channel, each differential signal channel connects an aforementioned isolating transformer, and two isolation Transformator is arranged at the upper surface of lower internal circuit board, and two isolating transformers are arranged under circuit board Surface.

9. electric connector as claimed in claim 8, it is characterised in that: described each isolating transformer former Sideline circle is respectively provided with centre cap, and described each centre cap is commonly connected to an electric capacity after connecting a resistance again A pole, another pole ground connection of electric capacity, described resistance is juxtaposed to exclusion, and described exclusion sets with electric capacity It is placed in the upper surface of internal circuit board.