TWM613704U - Corresponding structure between signal terminal and ground terminal - Google Patents

Abstract

This creation provides a corresponding structure of signal terminals and ground terminals, and provides a socket electrical connector applied to the Displayport (display port) specification. The electrical connector includes an insulating body and a plurality of upper rows are arranged in the insulating body. Terminals and multiple lower-row terminals. These upper-row terminals and these lower-row terminals are classified into multiple pairs of channels with differential positive and negative signal terminals, a pair of auxiliary channels with differential positive and negative signal terminals, and multiple grounds according to their pin definitions. Terminals, a plurality of Config terminals, a joint power terminal and a joint power return terminal, the rear end of the mating part of the grounding terminals and the Config terminals extends to the width of the welding part, and the difference between the two adjacent channels is positive The distance between the rear end of the butting portion of the negative signal terminal extends to the welding portion is reduced, and the differential positive and negative signal terminals are based on the width of the rear end of the butting portion extending to the welding portion, and the grounding terminals are behind the butting portion The width of the terminal extending from the end to the welding part is 1.5~2.5 times the width of the differential positive and negative signal terminal, which is improved by adjusting the rear end extension width and spacing of the mating part of the upper row of terminals and the lower row of terminals Far-end crosstalk effect.

Description

Corresponding structure of signal terminal and ground terminal

This creation provides a corresponding structure of signal terminals and ground terminals, especially a method of improving the far-end crosstalk effect by adjusting the rear end extension width and spacing of the mating part of the plurality of upper row terminals and the plurality of lower row terminals.

Press, electronic connectors are widely used in various communication equipment, as electronic signal transmission and connection components, generally common standard specifications of connector sockets include RJ-11 (telephone line socket), RJ-45 (network line socket) , USB (universal serial bus), IEEE1394 (serial bus), RF (wireless transmission port), Pin-header (discharge) and Displayport (display port) and many other different types.

Among the above-mentioned connectors, the Displayport (DP) connector is widely used in image signal transmission and can transmit high frequency. The display port connector consists of an insulating body, a complex array of differential signal terminal pairs installed in the insulating body, and Ground terminal between two adjacent pairs of differential signal terminals. When the display port connector is miniaturized, the terminal spacing of the terminal group is too close. When the terminal spacing is too close, the problem of electromagnetic waves and cross-talk interference when transmitting high-frequency signals will be amplified, and the cross-talk interference will be magnified. The sound interference problem has an absolute influence on the transmission signal speed, so the terminal structure of the traditional connector is poorly designed. The problems of crosstalk and short circuit need to be improved by those engaged in this industry.

Therefore, in view of the above-mentioned conventional problems and deficiencies, the creators collected relevant information through multiple evaluations and considerations, and used years of research and development experience in this industry to make continuous trials and modifications. Only this type of signal terminal and ground terminal The corresponding structural new patent was born.

This creation is a corresponding structure of signal terminal and ground terminal. The main purpose is to provide a socket electrical connector applied to the Displayport (display port) specification. The electrical connector includes an insulating body and a plurality of pieces are arranged in the insulating body. The upper row of terminals and the plurality of lower row of terminals. These upper row of terminals and the lower row of terminals are divided into multiple pairs of channels with differential positive and negative signal terminals, a pair of auxiliary channels with differential positive and negative signal terminals, according to their pin definitions. Multiple grounding terminals, multiple Config terminals (directly grounded or grounded by the device), a joint power terminal and a power return terminal, the width of the back end of the butting part of the grounding terminal and the Config terminal extending to the welding part is widened , And the distance between the rear end of the butting portion of the adjacent two channels of differential positive and negative signal terminals extending to the welding portion is reduced, and the differential positive and negative signal terminal is based on the width of the rear end of the butting portion extending to the welding portion. , The width of the terminal extending from the rear end of the mating portion of the grounding terminals to the welding portion is 1.5~2.5 times the width of the differential positive and negative signal terminal, by the butting of the upper row of terminals and the lower row of terminals Adjust the width and spacing of the rear end to improve the far-end crosstalk effect.

The secondary purpose of this creation is that the rear end of the butting part of the differential positive and negative signal terminals of the auxiliary channel extends to reduce the distance between the welding parts, and the differential positive and negative signal terminals of the pair of auxiliary channels are from the rear end of the butting part. The width of the terminal extending to the welding part is 0.8~1.2 times the width of the differential positive and negative signal terminal. The rear end of the mating part extends to the width of the welding part. The terminal width at the front end of the part is 0.40mm~0.55mm, and the width of the terminal extending from the rear end of the mating part to the welding part is 0.50mm.

Another purpose of this creation is that the rear ends of the two mating parts of the differential positive and negative signal terminals of the pair of auxiliary channels extend to the two welding parts to be bent inwardly to narrow the distance between each other so as to make the mating part The rear end extends until the distance between the two welding parts is less than or equal to the distance between the front ends of the two mating parts.

Another purpose of this creation is that the rear ends of the two mating parts of the differential positive and negative signal terminals of the two adjacent channels extend to the two welding parts to be widened to form a parallel narrowing of the distance between each other, so that the two mating The rear end of the part extends until the distance between the two welding parts is less than or equal to the distance between the front ends of the two mating parts.

1: Insulating body

10: accommodating space

11: Tongue plate

111: terminal slot

2: The first terminal block

2a: Horizontal part

2b: oblique part

21: Lower terminal

21a: Ground terminal

21b: Differential positive signal terminal of channel 1

21c: Differential negative signal terminal of channel 1

21d: Ground terminal

21e: Differential positive signal terminal of channel 3

21f: Differential negative signal terminal of channel 3

21g: Config2 terminal

21h: Ground terminal

21i: Hot plug detection terminal

21j: Connector power terminal

22: The front end of the docking section

221: Turning Surface

23: Rear end of docking department

24: Welding Department

3: The second terminal block

3a: Horizontal part

3b: oblique part

31: Upper terminal

31a: Differential positive signal terminal of channel 0

31b: Differential negative signal terminal of channel 0

31c: Ground terminal

31d: Differential positive signal terminal of channel 2

31e: Differential negative signal terminal of channel 2

31f: Ground terminal

31g: Config1 terminal

31h: Differential positive signal terminal of the auxiliary channel

31i: Differential negative signal terminal of the auxiliary channel

31j: Connector power return terminal

32: The front end of the docking section

321: Turning Surface

33: Rear end of docking section

34: Welding Department

4: Shielding shell

40: positioning space

G1: The distance between the front ends of the two mating parts of the differential positive and negative signal terminals of the adjacent two channels

G2: The distance between the rear end of the two butting parts of the differential positive and negative signal terminals of the adjacent two channels extending to the welding part

G3: The distance between the front ends of the two mating parts of the differential positive and negative signal terminals of the two auxiliary channels

G4: The distance between the rear end of the two butting parts of the differential positive and negative signal terminals of the two auxiliary channels extending to the welding part

W1: The width of the front end of the mating part of the ground terminal

W2: The width of the rear end of the butting part of the ground terminal extending to the welding part

W3: The width of the rear end of the butting part of the channel's differential positive and negative signal terminals extending to the welding part

W4: The width of the rear end of the butting part of the differential positive and negative signal terminals of the auxiliary channel extending to the welding part

[Picture 1] is the three-dimensional appearance of the electrical connector of this creation.

[Picture 2] is a three-dimensional exploded structure diagram of this creative electrical connector.

[Picture 3] is another three-dimensional exploded structure diagram of this creative electrical connector.

[Picture 4] is the three-dimensional appearance diagram of the upper finger terminal and the lower row terminal of this creation.

[Picture 5A] is the top view of the structure after bending the upper row of terminals for this creation.

[Picture 5B] is a structural diagram after bending the upper row of terminals for this creation.

[Picture 6A] is the top structure diagram of the lower row of terminals of this creation after bending.

[Picture 6B] is a structural diagram after bending the lower row of terminals for this creation.

In order to achieve the above purpose and effect, the technical means and structure used in this creation The structure and function of the preferred embodiment of this creation are described in detail as follows, in order to fully understand.

Please refer to Figures 1 to 6B, which are the three-dimensional appearance diagram, three-dimensional exploded structure diagram, another three-dimensional exploded structure diagram, the three-dimensional appearance diagram of the upper row of terminals and the lower row of terminals, and the upper The top structure diagram of the bent row of terminals, the structure diagram of the top row of terminals after bending, the top structure diagram of the bottom row of terminals after bending, and the structure diagram of the bottom row of terminals after bending, these drawings reveal the creation It is an electrical socket connector used in the Displayport specification. The components of the electrical connector include an insulating body 1, a first terminal block 2, a second terminal block 3, and a shielding shell 4. The details of each component are as follows:

One side of the insulating body 1 is provided with a tongue plate 11 for a predetermined plug connector (not shown in the figure) to be connected to each other. The upper and lower surfaces of the tongue plate 11 are provided with a plurality of terminal grooves 111, and the insulating body 1 has An accommodating space 10 communicates with the terminal grooves.

The first terminal base 2 is provided with a plurality of lower-row terminals 21, and the assembly of the lower-row terminals 21 and the first terminal base 2 can be achieved by using an insert molding method, and the lower-row terminals 21 has a horizontally arranged butting portion (including the front end 22 of the butting portion and the rear end 23 of the butting portion) and a welding portion 24 that extends downwardly. The welding portion 24 is matched and welded to a preset circuit board (not shown in the figure) Show) It can be designed as a horizontal shape by surface soldering technology (SMT) or a vertical shape by a dual-in-line package component mounting process (DIP), and the shape of the first terminal block 2 with the lower row terminals 21 also has A horizontal portion 2a and a downwardly bent oblique portion 2b, the first terminal base 2 is inserted into the accommodating space 10 of the insulating body 1, and the front end of the mating portion of the lower row of terminals 21 22 The terminal grooves 111 inserted and exposed on the lower surface of the tongue plate 11 of the insulating body 1 Wherein, the front end 22 of the mating portion has a turning surface 221, and the turning surface 221 is formed by mechanical stamping or bending. When the lower row terminals 21 have the turning surface 221 that is not higher than the surface of the tongue 11 At this time, when the male and female ends of the electrical connector are mated, the lower row of terminals 21 will not retract or withdraw from the insulating body 1.

The second terminal base 3 is provided with a plurality of upper-row terminals 31, and the assembly of the upper-row terminals 31 and the second terminal base 3 can be achieved by using the buried injection method, and the front of the upper-row terminals 31 is horizontal A butting part (including the front end 32 of the butting part and the rear end 33 of the butting part) and a welding part 34 extending downwardly are arranged in the direction. The welding part 34 is matched and welded to a preset circuit board and can be designed as surface welding technology (SMT ) The shape of the second terminal block 3 with the upper row of terminals 31 also has a horizontal portion 3a and is bent downwards. An oblique portion 3b, the second terminal base 3 is inserted into the accommodating space 10 of the insulating body 1, and the front end 32 of the mating portion of the upper row of terminals 31 is inserted and exposed to the insulating body 1 in the terminal grooves 111 on the upper surface of the tongue 11, and the front end 32 of the mating portion has a turning surface 321. The turning surface 321 is formed by mechanical punching or bending. When 31 has the turning surface 321 that is not higher than the surface of the tongue plate 11, so that the upper row of terminals 31 will not retract or withdraw from the insulating body 1 when the electrical connector performs the mating action of the male and female ends.

The shielding shell 4 has a positioning space 40 that covers the insulating body 1, the first terminal base 2, and the second terminal base 3 inside. The shielding shell 4 is provided with electromagnetic waves that isolate a plurality of terminals during signal transmission.

The electrical connector includes an insulating body and the insulating body 1 is provided with a composite Several upper-row terminals 31 and a plurality of lower-row terminals 21, each of the upper-row terminals 31 and the lower-row terminals 21 has a mating part and a welding part (24, 34) extending from the mating part and bending downward, The upper-row terminals 31 and the lower-row terminals 21 are classified into multiple pairs of channels with differential positive and negative signal terminals, a pair of auxiliary channels with differential positive and negative signal terminals, multiple grounding terminals, and multiple Config according to their pin definitions. Terminals (directly grounded or grounded by the device), a joint power terminal and a joint power return terminal, the rear end (23, 33) of the mating part of the ground terminals extending to the width W2 of the welding part (24, 34) It is greater than the width W1 of the front end (22, 32) of the mating part, and the rear end (23, 33) of the mating part of the differential positive and negative signal terminals of two adjacent channels extends to the distance G2 between the welding parts (24, 34) Less than the distance G1 between the front ends (22, 32) of the two mating parts, and the distance between the rear ends (23, 33) of the two mating parts (23, 33) of the pair of auxiliary channel differential positive and negative signal terminals extends to the distance G4 between the welding parts (24, 34) The distance G3 between the front ends (22, 32) of the two mating parts is less than G3, and the distance between the rear ends (23, 33) of the mating parts of the upper row of terminals 31 and the lower row of terminals 21 is adjusted to improve the distal string Sound effect.

There are ten pins on the upper row of terminals 31 and the pins from left to right are defined as pin 1 as the differential positive signal terminal of ML_Lane0(p) channel 0 [31a]; pin 3 is the differential of ML_Lane0(n) channel 0 Negative signal terminal [31b]; Pin 5 is the GND ground terminal [31c]; Pin 7 is the differential positive signal terminal of ML_Lane2(p) channel 2 [31d]; Pin 9 is the differential negative of ML_Lane2(n) channel 2 Signal terminal [31e]; Pin 11 is the GND ground terminal [31f]; Pin 13 is the Config1 terminal [31g]; Pin 15 is the differential positive signal terminal [31h] (Signal fo r Auxiliary Channel); Pin 17 is the differential negative signal terminal of the AUX_CH(n) auxiliary channel [31i]; Pin 19 is the DP_PWRReturn connector power response terminal [31j].

For example, the differential positive and negative signal terminals of the pin 1 [31a] or the pin 3 [31b] extend from the rear end 33 of the mating portion to the terminal width W3 of the welding portion 34 as a reference, and the auxiliary channel is differential The positive and negative signal terminals [31h, 31i] extend from the rear end 33 of the mating part to the terminal width W4 of the welding part 34, which is the rear end 33 of the mating part of the pin 1 [31a] or the pin 3 [31b] The width of the terminal extending to the welding portion 34 is 0.8~1.2 times, and the far-end crosstalk effect is improved by adjusting the width of the upper row of terminals 31.

Taking the pin 1 [31a] or the pin 3 [31b] as an example, the differential positive and negative signal terminals extend from the rear end 33 of the mating portion to the terminal width W3 of the welding portion 34 as a reference, the pin 5 [31c] and the ground terminal of the pin 11[31f] The rear end 33 of the mating portion extends to the terminal width W2 of the soldering portion 34 is the terminal width of the pin 1[31a] or the pin 3[31b] 1.5~2.5 times, by adjusting the extension width of the rear end 33 of the mating portion of the upper row of terminals 31 to improve the far-end crosstalk effect.

There are ten pins in the lower row of terminals 21 and the pins from left to right are defined as pin 2 as the GND ground terminal [21a]; pin 4 is the differential positive signal terminal of ML_Lane1(p) channel 1 [21b]; Pin 6 is the differential negative signal terminal of ML_Lane1(n) channel 1 [21c]; Pin 8 is the GND ground terminal [21d]; Pin 10 is the differential positive signal terminal of ML_Lane3(p) channel 3 [21e]; 12 is the differential negative signal terminal of ML_Lane3(n) channel 3 (21 f]; Pin 14 is the Config2 terminal [21g]; Pin 16 is the GND ground terminal [21h]; Pin 18 is the Hot Plug Detect hot plug detection terminal [21i]; Pin 20 is the DP_PWR connector power terminal [ 21j].

Take the pin 4[21b] or the pin 6[21c] as an example. The differential positive and negative signal terminals extend from the rear end of the mating portion to the terminal width W3 of the soldering portion as a reference, and the pin 2[ 21a], the pin 8[21d], the pin 14[21g], the ground terminal of the pin 18[21i], etc. The rear end 23 of the mating portion extends to the welding portion 24. The terminal width W2 is the lead The terminal width of pin 4 [21b] or pin 6 [21c] is 1.5~2.5 times, and the far-end crosstalk effect can be improved by adjusting the extension width of the rear end 23 of the mating portion of the lower row of terminals 21.

The two adjacent channels of differential positive and negative signal terminals ([21b, 21c], [21e, 21f], [31a, 31b], [31d, 31e]) extend the rear ends (23, 33) of the two mating parts The two welding parts (24, 34) are widened to form a parallel narrowing of the distance between each other, so that the rear ends (23, 33) of the two mating parts extend to less than the distance between the two welding parts (24, 34) Or equal to the distance between the front ends (22, 32) of the two mating parts, the distance between the upper row of terminals 31 and the lower row of terminals 21 is adjusted to improve the far-end crosstalk effect.

The rear ends 33 of the two mating parts of the differential positive and negative signal terminals [31h, 31i] of the pair of auxiliary channels extend to the two welding parts 34, and the distance between each other is narrowed by bending inward in translation to make the mating part The rear end 33 extends until the distance between the two welding portions 34 is less than or equal to the distance between the front ends 32 of the two mating portions. The distance between the upper row terminals 31 is adjusted to improve the distance. End crosstalk effect.

Integrating the aforementioned changes in the width of the upper row of terminals 31 and the lower row of terminals 21, the optimized design parameters can be obtained as shown in the table below:

Combining the aforementioned changes in the distance between the upper row of terminals 31 and the lower row of terminals 21 of the differential positive and negative signal terminals and the differential positive and negative signal terminals of the pair of auxiliary channels, the optimized design parameters can be obtained as follows The list grid shows:

According to the disclosure in Figures 1 to 6B, we can understand that this creation is the corresponding structure of the signal terminal and the ground terminal, which is applied to the socket electrical connector of the Displayport (display port) specification. The electrical connector includes an insulating body and A plurality of upper-row terminals and a plurality of lower-row terminals are arranged in the insulating body. The upper-row terminals and the lower-row terminals are divided into multiple pairs of channels of differential positive and negative signal terminals, and a pair of auxiliary channels according to their pin definitions. Differential positive and negative signal terminals, multiple ground terminals, multiple Config terminals (directly grounded or grounded by the device), a connector power terminal and a power return terminal, the grounding terminals and the Config terminals are behind the mating part The end extends to the width of the welding part is widened, and the rear end of the butting part of the differential positive and negative signal terminals of two adjacent channels extends to the distance between the welding parts, and the differential positive and negative signal terminal is at the rear end of the butting part. The width extending to the welding part is the reference, and the width of the terminal extending from the rear end of the mating part of the grounding terminals to the welding part is 1.5~2.5 times the width of the differential positive and negative signal terminal. The extension width and spacing of the rear end of the mating portion with the lower row of terminals are adjusted to improve the far-end crosstalk effect. Has excellent in the commercial market Competitiveness, so file a patent application to seek patent protection.

The above detailed description is only for a better feasible embodiment of this creation, but this embodiment is not used to limit the scope of patent application of this creation, all other equal changes and modifications completed without departing from the spirit of the technique disclosed in this creation All changes shall be included in the scope of patents covered by this creation.

In summary, the corresponding structure of the signal terminal and the ground terminal in this creation can indeed achieve its effects and purposes when used. Therefore, this creation is a creation with excellent practicality, and it actually meets the requirements of a new patent application. The application is submitted in accordance with the law, and we hope that the review committee will approve this case as soon as possible to protect the creator’s hard work. If there are any doubts, please feel free to write instructions. The creator will do our best to cooperate and feel good.

31: Upper terminal

31a: Differential positive signal terminal of channel 0

31b: Differential negative signal terminal of channel 0

31c: Ground terminal

31d: Differential positive signal terminal of channel 2

31e: Differential negative signal terminal of channel 2

31f: Ground terminal

31g: Config1 terminal

31h: Differential positive signal terminal of the auxiliary channel

31i: Differential negative signal terminal of the auxiliary channel

31j: Connector power return terminal

32: The front end of the docking section

321: Turning Surface

33: Rear end of docking section

34: Welding Department

G1: The distance between the front ends of the two mating parts of the differential positive and negative signal terminals of the adjacent two channels

G2: The distance between the rear end of the butting part of the differential positive and negative signal terminals of the adjacent two channels extending to the welding part

G3: The distance between the front ends of the two butting parts of the differential positive and negative signal terminals of the two auxiliary channels

G4: The distance between the rear end of the mating part of the differential positive and negative signal terminals of the two auxiliary channels extending to the welding part

W1: The width of the front end of the mating part of the ground terminal

W2: The width of the rear end of the butting part of the ground terminal extending to the welding part

W3: The width of the rear end of the butting part of the channel's differential positive and negative signal terminals extending to the welding part

W4: The width of the rear end of the butting part of the differential positive and negative signal terminals of the auxiliary channel extending to the welding part

Claims (9)

A corresponding structure of a signal terminal and a ground terminal is applied to a socket electrical connector of the Displayport (display port) specification. The electrical connector includes an insulating body and a plurality of upper-row terminals and a plurality of lower-row terminals are arranged in the insulating body , The upper row of terminals and the lower row of terminals each have a mating portion and a welding portion extending from the butting portion to the lower row of terminals, and the upper row of terminals and the lower row of terminals are defined according to their pin positions It is divided into a plurality of pairs of channels of differential positive and negative signal terminals, a pair of auxiliary channels of differential positive and negative signal terminals, a plurality of ground terminals and a plurality of Config terminals, a connector power terminal and a connector power return terminal, which are characterized by: these The rear end of the mating part of the grounding terminal and the Config terminal extends to the width of the welding part, and the rear end of the mating part of the differential positive and negative signal terminals of the adjacent two channels extends to the welding part, and the distance between the welding parts is reduced. The positive and negative signal terminals are based on the width of the rear end of the mating part extending to the welding part, and the width of the terminal extending from the rear end of the mating part to the welding part of the grounding terminals is the width of the differential positive and negative signal terminal 1.5 ~2.5 times, by adjusting the width and spacing of the upper row of terminals and the lower row of terminals to improve the far-end crosstalk effect. The corresponding structure of the signal terminal and the ground terminal as described in item 1 of the scope of patent application, wherein the rear end of the mating part of the differential positive and negative signal terminal of the pair of auxiliary channels extends to the distance between the welding parts is reduced, and the distance between the pair of auxiliary channels is reduced. The differential positive and negative signal terminals extend from the rear end of the mating part to the terminal width of the welding part, which is 0.8 to 1.2 times the width of the differential positive and negative signal terminal extending from the rear end of the mating part to the welding part. The corresponding structure of the signal terminal and the ground terminal as described in item 2 of the scope of patent application, in which the rear ends of the two mating parts of the pair of differential positive and negative signal terminals of the auxiliary channel extend The distance between the two welding parts is narrowed by bending inward by translation, or the rear end of the two butting parts extends to the two welding parts to be widened to form a parallel narrowing of the distance between each other, so that the butting part The rear end extends until the distance between the two welding parts is less than or equal to the distance between the front ends of the two mating parts. The corresponding structure of the signal terminal and the ground terminal as described in item 1 of the scope of patent application, wherein the terminal width at the front end of the mating part of the pair of auxiliary channels is 0.40mm~0.55mm, and the rear end of the mating part extends to the welding part. The terminal width is 0.50mm. The corresponding structure of the signal terminal and the ground terminal as described in item 1 of the scope of the patent application, wherein the rear ends of the two mating parts of the differential positive and negative signal terminals of the two adjacent channels extend to the two welding parts to move inwardly Bending to narrow the distance between each other, or the rear ends of the two mating parts extend to the two welding parts to be widened to form a parallel narrowing of the distance between each other, so that the rear ends of the two mating parts extend to the two welding parts The distance is less than or equal to the distance between the front ends of the two mating parts. For example, the corresponding structure of the signal terminal and the ground terminal described in the first item of the scope of patent application, wherein the terminal width of the front end of the mating part of the channel differential positive and negative signal terminal is 0.40mm~0.55mm, and the back end of the mating part extends to The terminal width of the welding part is 0.45~0.51mm, and the rear end of the butting part of the channel differential positive and negative signal terminal extends to the width of the welding part is 0.8 to 1.2 times the width of the front end of the butting part of the channel differential positive and negative signal terminal . The corresponding structure of the signal terminal and the ground terminal as described in item 1 of the scope of patent application, wherein the terminal width of the front end of the mating part of the ground terminal and the Config terminal The range is 0.40mm~0.55mm. The terminal width from the rear end of the butting part to the welding part is 0.48~0.90mm, and the rear end of the butting part of the grounding terminal extends to the front end of the butting part of the grounding terminal. 0.8 to 2.2 times the width. The corresponding structure of the signal terminal and the ground terminal as described in item 1 of the scope of patent application, wherein the distance between the rear end of the butting portion of the adjacent two-channel differential positive and negative signal terminals extends to the welding portion is 0.6 of the distance between the front end of the butting portion ~1.0 times, the distance between the front end of the butting part is 0.45mm~0.60mm, and the distance between the rear end of the butting part and the welding part is 0.36mm~0.40mm. The corresponding structure of the signal terminal and the ground terminal as described in item 1 of the scope of patent application, wherein the rear end of the butting portion of the differential positive and negative signal terminals of the two auxiliary channels extends to the distance between the front end of the butting portion 0.6~1.0 times, the distance between the front end of the butting part is 0.45mm~0.60mm, and the distance between the rear end of the butting part and the welding part is 0.40mm.

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