CN2563788Y - Electric connector - Google Patents

Abstract

The utility model discloses an electric connector, which comprises an insulation body 10 and a terminal group 12 accommodated in the insulation body, wherein the terminal group comprises eight signal terminals (26a-26h) and two grounding terminals (28a,28b), an upper base plate 30 and a lower base plate 32, wherein all terminals are arranged in parallel and clamped between the upper base plate (30) and the lower base plate(32), the eight signal terminals are complete except that the two terminals (26c,26f) are cut into three segments, two ends (58a,58b;56a,56b) of the cut terminals pass through conductive loop on the upper and lower base plates to change conductive path, middle parts (58c,56c) are grounded, by the structure, the electrical capacity between the cut terminal and the adjacent terminal, thereby reducing the crosstalk interference between the cut terminal and the adjacent terminal.

Description

Electric connector

[technical field]

The utility model is relevant a kind of electric coupler component, refers to especially establish printed circuit board (PCB) (PCB) to reduce the electric connector of cross-talk between terminal in a kind of.

[background technology]

The module electric connector has been widely used in the telecommunication system a kind of module electric connector representative of type electric connector for this reason that is called the RJ45 type always since its exploitation.

RJ45 type electric connector comprises eight terminals altogether.Because the microminiaturization of computer, its all related electronic components comprise that electric connector also all must corresponding minification.Like this, microminiaturized consequence is following, and an one negative effect is the cross-talk problem can occur between the interior terminal of electric connector.When the module electric connector was used for the low speed signal transmission, the cross-talk between terminal with regard to its effect is can be uncared-for.But when it was used for high speed transmission of signals, the cross-talk between terminal will cause serious problems.If cross-talk between terminal is not controlled at an acceptable degree, RJ45 type electric connector can not be applied to high speed transmission of signals.

One of solution is formed a terminal differential pair for selecting pair of terminal.In the terminal differential pair, two terminals are with the identical signal of opposite phase transmission.So, the most of noise between two of same differential pair terminals can be cancelled in the data processing unit.

By prior art as can be known, by selecting terminal can form the terminal differential pair combination of at least eight kinds of various criterion types, as T568A, T568B, USOC4-pair, USOC1-, USOC2-or USOC3-pair, 10base-T (802.3), Token Ring (802.5), 3-pair (MMJ), TP-PMD (X3T9.5) and ATM.In each combination, be adjacent one another are a bit as two terminals of terminal differential pair, some is to be separated from each other.Each type all has its characteristics, need go to solve but also produce some problems such as cross-talk etc. simultaneously.

In these standard combination, T568A and T568B use very extensive.The terminal of T568A to combination in, terminal 4,5 is formed the first terminal differential pairs, terminal 1,2 is formed the 3rd terminal differential pair, terminal 3,6 is formed the second terminal differential pair, terminal 7,8 is formed the 4th terminal differential pair.The terminal of T568B to combination in, terminal 4,5 is formed the first terminal differential pairs, terminal 1,2 is formed the second terminal differential pair, terminal 3,6 is formed the 3rd terminal differential pair, terminal 7,8 is formed the 4th terminal differential pair.

Because spacing equates between these eight terminals, the electric capacity that produces between terminal can bring some problems really, as cross-talk.For example, terminal 3 can obtain the energy that adjacent terminal 2,4 with it causes.Simultaneously, transmission can obtain the energy that terminal 5,7 causes with the terminal 6 of terminal 3 similar antiphase signals.But because terminal 3,6 can not be set up the electric capacity that the equates electric capacity with 6,7 of balanced terminals 2,3 and terminals 1,8 of terminals, thereby terminal 3,6 can not be eliminated effectively from the energy of terminal 2,7 acquisitions.Therefore, can carry the noise that brings by adjacent terminal 2,7 separately in the signal of terminal 3,6 transmission.In addition, terminal 3,6 also can carry the noise that is brought by terminal 4,5, and these electric capacity be should give the noise of solution to avoid it to bring.

In order to reduce terminal 3,4, terminal 3,2, terminal 6,5 and terminal 6,7 separately between the influence of electric capacity, industry has adopted several different methods, for example, increase the electric capacity of electric capacity 3,5 of terminal 3,1 and terminals, increase the electric capacity of electric capacity with 6,5 of 6,7 of balanced terminals and terminals at terminal 6,8 and 6,4 of terminals with 3,4 of 3,2 of balanced terminals and terminals.

In order to address the above problem, new electrical electric capacity need be arranged or increase to terminal again.

One of existing mode is for to be arranged in ground floor with terminal 2,6, and terminal 8,5,4,1 is arranged in the second layer, and terminal 7,3 is arranged in the 3rd layer.

Wherein, the terminal 6 that is positioned at ground floor has a rectangular-shaped loops, and the terminal 4,8 that is positioned at the second layer is arranged in the position, long limit in this loop; The terminal 3 that is positioned at the 3rd layer also has a rectangular-shaped loops, and the terminal 5,1 that is positioned at the second layer is arranged in the position, long limit in this loop.

In addition, the right rectangular-shaped loops of terminal 6 also further comprises a square, and this square is corresponding to the square of terminal 4.Simultaneously, the left rectangular-shaped loops of terminal 3 also comprises a square, and this square is corresponding to the square of terminal 5.

Above-mentioned terminal arrange can increase terminal (1,3), (3,5) and terminal (4,6), (6,8) thus between electric capacity help electrical electric capacity between balanced terminals.

But above-mentioned eight terminals or four terminal differential pairs are arranged in three different aspects respectively, and each terminal differential pair is separated by an insulation board, and as United States Patent (USP) the 5th, 769,647 structures that disclosed can increase the manufacture difficulty of electric connector undoubtedly.

In addition, the shape and the structure of this eight butts have nothing in common with each other.Each types of terminals all has the configuration that is different from other terminal, and particularly terminal 3,6 has the rectangular-shaped loops of a covering corresponding terminal respectively, to produce the electrical couplings that needs.Each rectangular-shaped loops also further is formed with in order to increase the square of the electrical electric capacity between corresponding terminal, and the electrical electric capacity of Jian Liing helps to satisfy the requirement of high speed transmission system by this.So, the terminal of these eight kinds of different configurations will certainly increase complexity and the degree of difficulty in the manufacturing.

Other settling mode is arranged and then is influenced terminal 3,2, terminal 3,4, the electric capacity that terminal 6,5 and terminal are 6,7 as the tail position by changing terminal 3,6 and terminal 4,5.But this way can increase manufacturing cost undoubtedly.

The United States Patent (USP) of Steinman invention has disclosed another kind of solution the 6th, 120, No. 329.It still needs complicated processing procedure for terminal is made different shapes and size.

The United States Patent (USP) of Sakamoto invention proposes for 5,069, No. 641 circuit board is used for scheme in the module electric connector insulating body, but it fails to solve foregoing problems.

[summary of the invention]

The purpose of this utility model is to provide a kind of electric connector, and it adopts the printed circuit board arrangement that is formed with the galvanic circle thereon to reduce the cross-talk between terminal.

For achieving the above object, the utility model adopts following technical scheme: electric connector comprises insulating body and is contained in its interior terminal module, this terminal module comprises eight signal terminals and two earth terminals, upper substrate and infrabasal plates, and wherein all terminals are arranged side by side and are folded between the upper and lower substrate.The ground connection conductive materials is being set to reduce the electrical electric capacity between aforementioned two terminals at least between two selected adjacent signals terminals.

Signal terminal that at least one is selected is cut to several sections, and wherein two sections change conductive path by the galvanic circle on the printed circuit board (PCB), keep its terminals of adjacent intact simultaneously.Like this, reduce to cut off the electrical electric capacity between terminal and adjacent terminal, thereby reduced the cross-talk of cutting off between terminal and adjacent terminal.

Signal terminal that at least one is selected cuts into three sections, wherein is positioned at two sections of two ends and changes conductive path by the galvanic circle on the printed circuit board (PCB), and in the middle of it is positioned at one section is connected with grounded circuit.Like this, this section of being positioned at the centre can be the shutoff signal terminal and the adjacent signal terminal provides grounding function, thereby reduced the cross-talk of cutting off between terminal and adjacent terminal.

Compared with prior art, above-mentioned electric connector with electrical capacitive balance between the realization terminal, thereby reduces cross-talk between terminal by at least two signal terminals are cut to several sections.

[description of drawings]

Fig. 1 is the front perspective view of the utility model electric connector.

Fig. 2 is the front view of electric connector shown in Figure 1.

Fig. 3 is the rear perspective view of the utility model electric connector.

Fig. 4 is the three-dimensional exploded view of electric connector shown in Figure 3, and wherein the terminal module is not installed on the insulating body.

Fig. 5 is the three-dimensional exploded view of terminal module shown in Figure 4.

Fig. 6,7 is the plan view on relative two surfaces of upper substrate shown in Figure 5.

Fig. 8,9 is the plan view on relative two surfaces of infrabasal plate shown in Figure 5.

Figure 10 looks enlarged drawing for the end of terminal module, and wherein infrabasal plate is removed, with the attachment relationship of clear shows signal terminal and upper substrate.

Figure 11 is the cutaway view of terminal module along the A-A direction of Figure 14.

Figure 12 is in the utility model electric connector manufacture process, the stereogram after the terminal material belt punch forming.

Figure 13 is a terminal material belt shown in Figure 12 and stereogram after upper and lower substrate combines.

Figure 14 is the stereogram of terminal module.

Figure 15 is the terminal module stereogram of the utility model second embodiment.

[embodiment]

As shown in Figures 1 to 4, the utility model electric connector 1 comprises that an insulating body 10 and is by the terminal module 12 that inserts before the direction thereafter in it, insulating body 12 is provided with one and connects its forward and backward surperficial reception room of 16,14 18, is used to accommodate described terminal module 12 in it.Reception room 18 upper ends are provided with the separate slit 20 that eight bottoms communicate with reception room 18, with the signal terminal (describing in detail as the back) of host side submodule group 12.Be provided with passage 22 respectively in 24 places, vicinity two side, reception room 18 tops and be used for accommodating respectively two light-emitting diodes (Light Emitting Diode; LED) in it.

As shown in Figure 5, this terminal module 12 comprises that printed circuit board (PCB) is a upper substrate 30 on one, printed circuit board (PCB) is infrabasal plate 32 and eight signal terminal 26a, 26b, 26c, 26d, 26e, 26f, 26g, 26h and two earth terminal 28a, the 28b that are folded in 30,32 of upper and lower substrates once.Wherein signal terminal 26a and signal terminal 26b are the same signal of differential terminal with the transmission opposite phase.It is right that signal terminal 26d and 26e, 26c and 26f, 26g and 26h also constitute differential terminal respectively, and the 3rd (a) figure that is issued to No. the 5th, 941,734, the United States Patent (USP) of MatsushitaElectric Works company has disclosed similar terminal and arranged.Shown in the 5th figure of this creation, a key character of this creation is that signal terminal 26c, 26f all are cut to three sections, hereinafter will specify.

Shown in Fig. 6,7, upper substrate 30 comprises first surface 34 and opposing second surface 36.Be provided with ten conductive bond pads 38a, 38b, 38c, 38c ', 38d, 38e, 38f, 38f ', 38g, 38h in first surface 34 and be used for electrical activation signal terminal 26a～26h respectively, wherein welded gasket 38c, 38c ' activation signal terminal 26c, welded gasket 38f, 38f ' activation signal terminal 26f. Welded gasket 38a, 38b, 38c, 38d, 38e, 38f, 38g, 38h are arranged side by side and stagger along the vertical line direction of first surface 34 and arrange, and welded gasket 38c ' is located along the same line with welded gasket 38c, and welded gasket 38f ' and welded gasket 38f are located along the same line.Be provided with a conductive plate 40a between welded gasket 38c and welded gasket 38c ', its width is wider than welded gasket 38c and is had two and extends to end wafer 42a, the 42b that is positioned at relative both sides welded gasket 38c respectively.Between welded gasket 38f and welded gasket 38f ', be provided with a conductive plate 40b who is provided with conductive plate 40a mirror image.In contiguous upper substrate 30 relative both sides two bus 46a, 46b are installed.

Be provided with three successive loops in second surface 36, be respectively home loop 48a, intermediate loop 48b, external circuit 48c, wherein home loop 48a and external circuit 48c are the insulation loop, and intermediate loop 48b is the galvanic circle.On second surface 36, also be provided with the first conduction panel 50a that is positioned at home loop 48a and be positioned at the conduction of second outside the 48c of external circuit panel 50b.

Be positioned at conductive component on first, second surface 34,36 with electric connection in also being provided with several conductive through holes on the upper substrate 30.Wherein conductive through hole 52a, 52b are positioned at intermediate loop 48b and contact with welded gasket 38f, 38f ' respectively to set up a conductive path through welded gasket 38f, through hole 52a, intermediate loop 48b, through hole 52b and welded gasket 38f '.As shown in Figure 7, intermediate loop 48b comprises respectively first side 49a and the second side 49b that spatially links to each other with welded gasket 38d, 38h.Other through hole 54a, 54a ', 54b, 54b ', 54c, 54d, 54e, 54e ', 54f, 54f ' run through conduction panel 50a, 50b and electrically connect to set up two conductive paths with bus 46a, 46b and conductive plate 40a, 40b: one from conduction panel 50a, by through hole 54b, 54b ', conductive plate 40b, through hole 54c, panel 50b, through hole 54a, 54a ', 54f, the 54f ' conductive path up to bus 46a, 46b that conducts electricity; Another is for from conductive plate 40a, by through hole 54e, 54e ', 54d, conduction panel 50b, through hole 54a, 54a ', 54f, the 54f ' conductive path up to bus 46a, 46b.When bus 46a, 46b ground connection, conduction panel 50a, 50b can provide the function of anti-electromagnetic interference (EMI).

Shown in Fig. 8,9, the apparent surface of infrabasal plate 32 has and the identical layout in upper substrate 30 surfaces, will not describe in detail herein.

Be attached on bus 46a, the 46b by earth terminal 28a, the 28b that grounded circuit (not shown) reaches zero potential as shown in figure 10, and in conjunction with Fig. 6,7, two.Signal terminal 26a～26h is attached to respectively on welded gasket 38a～38h, and wherein signal terminal 26c contacts with two welded gasket 38c, 38c ', and signal terminal 26f contacts with two welded gasket 38f, 38f '.Signal terminal 26c is cut to 3 sections: docking section 56a, installation portion 56b and be positioned at above-mentioned pars intermedia 56c between the two.Signal terminal 26f also is cut to 3 sections: docking section 58a, installation portion 58b and be positioned at above-mentioned pars intermedia 58c between the two.Docking section 58a electrically connects by above-mentioned galvanic circle and installation portion 58b via welded gasket 38f, 38f '.Therefore, the signal transmission change path via signal terminal 26f is first side 49a and second side 49b transmission by intermediate loop 48b.

Since the first side 49a of intermediate loop 48b and signal terminal 26f electric connection and with signal terminal 26d space on be communicated with, the electric capacity between signal terminal 26f and signal terminal 26d can increase with the electric capacity between balanced signal terminal 26f and signal terminal 26e by first side 49a.Situation between signal terminal 26f, 26g, 26h is identical with aforementioned circumstances.After terminal was installed on the infrabasal plate 32, the situation between signal terminal 26c, 26d, 26a was also identical with above-mentioned condition with situation between signal terminal 26c, 26d, 26e.Like this, the cross-talk between signal terminal can be lowered.

Disclose as Figure 10, because the pars intermedia 58c of signal terminal 26f separates with its docking section 58a and installation portion 58b and does not have signal to pass through wherein, then signal terminal 26f has and relatively short can form the length of electric capacity with adjacent signal terminal 26e, 26g, thereby has reduced the electric capacity between signal terminal 26f and adjacent signal terminal 26e, 26g.This will help with signal terminal 26f and away from signal terminal 26d, 26h between electric capacity come electric capacity between balanced signal terminal 26f and adjacent signal terminal 26e, 26g.Situation between signal terminal 26a, 26b, 26c, 26d, 26e is also identical with said circumstances.Like this, the cross-talk between signal terminal can further reduce.

Equally as shown in figure 10, the end wafer 44b of the conductive plate 40b that is made of electric conducting material is between the docking section 58a of signal terminal 26g and signal terminal 26f, because above-mentioned end sheet 44b is in zero potential, it provides grounding function to reduce the cross-talk between signal terminal 26f, 26g.Like this, the cross-talk between signal terminal can further reduce.

Still as shown in figure 10, the pars intermedia 58c of signal terminal 26f and the pars intermedia 56c of signal terminal 26c also are positioned at zero potential, also can provide grounding function.This structure also can help to reduce the cross-talk degree between signal terminal.

As shown in figure 11, its to have disclosed above-mentioned conductive pad be arranging of welded gasket, through hole and terminal.Wherein, all signal terminal 26a～26h and earth terminal 28a, 28b all are positioned at one deck or same plane to reduce the thickness of terminal module 12.

Shown in Figure 12 to 14, in module electric connector manufacture process, terminal material belt 60 is formed by integrated punching on the metal plate, wherein eight signal terminal semi-finished product 62a, 62b, 62c, 62d, 62e, 62f, 62g, 62h arrange side by side, two earth terminal semi-finished product 64a, 64b lay respectively at the aforementioned signal terminal outside, and two strip intercell connector 66a, 66b lay respectively at the terminal opposite end and are attached thereto.Then, terminal material belt 60 is folded between the upper and lower substrate 30,32, and signal terminal semi-finished product 62a～62h and earth terminal semi-finished product 64a, 64b are contacted with the corresponding welded gasket 38a～38h that is positioned on the upper and lower substrate 30,32.As shown in figure 13, it has disclosed terminal module semi-finished product 68.Signal terminal semi-finished product 62c, 62f are cut into 3 sections, then with strip intercell connector 66a, 66b from terminal material belt 60 excision, adjust each terminal semi-finished product 62a～62h and form terminal module 12, again terminal module 12 is inserted in the insulating bodies 10.

As shown in figure 15, it is second embodiment of this creation, and the difference of itself and the foregoing description is that its terminal module 70 is different from the terminal module 12 of the foregoing description.This terminal module 70 comprises eight signal terminal 76a, 76b, 76c, 76d, 76e, 76f, 76g, 76h, upper substrate 72 and infrabasal plate 74, and wherein all terminals are folded between the upper and lower substrate 72,74.Signal terminal 76c, 76f all cut into 3 sections, and wherein pars intermedia system removes and stays two slit 78a, 78b from terminal module 70.

Claims (10)

1. electric connector, it includes insulating body, is contained in first, second and third terminal in the insulating body, and wherein second terminal is between the first terminal and the 3rd terminal; It is characterized in that: between second terminal and the 3rd terminal, be provided with the ground connection conductive component, to reduce the electric capacity between second terminal and the 3rd terminal.

2. electric connector as claimed in claim 1 is characterized in that: above-mentioned first, second and third terminal be attached on the printed circuit board (PCB) and with its on corresponding conductive pad physics and electrically contact.

3. electric connector as claimed in claim 2 is characterized in that: above-mentioned ground connection conductive component is attached on the above-mentioned printed circuit board (PCB) with mode of printing.

4. electric connector as claimed in claim 2 is characterized in that: above-mentioned the 3rd terminal electrically connect with the first terminal space on the galvanic circle that is connected with the electric capacity between change the first terminal and the 3rd terminal.

5. electric connector as claimed in claim 2 is characterized in that: above-mentioned the 3rd terminal is cut off, and reduces length to change the electric capacity between itself and second terminal.

6. electric connector as claimed in claim 1 is characterized in that: it also is included in first and second printed circuit board (PCB) which is provided with conductive pad and galvanic circle, and first, second printed circuit board (PCB) is folded in first, second and third terminal therebetween.

7. electric connector, it comprises insulating body and is contained in the interior terminal module of this insulating body, this terminal module comprises printed circuit board (PCB), be provided with several conductive pads and galvanic circle in described printed circuit board (PCB), on above-mentioned conductive pad, be provided with several conducting terminals side by side, it is characterized in that: at least one selected terminal is cut off and forms docking section and installation portion, and aforementioned docking section and installation portion are by above-mentioned conductive pad on the printed circuit board (PCB) and above-mentioned galvanic circle electrical interconnects.

8. electric connector as claimed in claim 7, it is characterized in that: between the docking section of at least one selected terminal and installation portion, be provided with conductive component, this conductive component and above-mentioned docking section and mounting portion be from setting, and electrically connect with the grounded circuit of above-mentioned printed circuit board (PCB).

9. electric connector as claimed in claim 8 is characterized in that: after cutting off at least one selected terminal, this conductive component still keeps.

10. electric connector, it comprises the insulating body that is provided with the docking section, the terminal module that is contained in the interior position that is connected with aforementioned docking section of aforementioned dielectric body, above-mentioned terminal module is included in substrate and several conducting terminals of arranging side by side which is provided with the galvanic circle, it is characterized in that: each terminal includes the contact site of diagonally extending, vertical weld part and the horizontal connecting portion between said two devices, and these connecting portions are on aforesaid substrate; The connecting portion of a special terminal is cut off in the above-mentioned terminal, and the part of intermediate portion and opposite end is separated and independent the setting, and above-mentioned pars intermedia links to each other with above-mentioned contact site and weld part respectively by above-mentioned galvanic circle; It comprises that also ground mat is mechanical with the above-mentioned independent pars intermedia that is provided with and electrically contacts that it also is positioned on this substrate.

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