CN201741834U - Electric connector - Google Patents

Abstract

The utility model relates to an electric connector comprising an insulating body and a plurality of conducting terminals fixedly held in the insulating body, wherein the insulating body is provided with an inserting opening for containing a butt-jointing connector; the conducting terminals comprise a first terminal including at least two pairs of differential signal terminals; the first terminal is provided with a first contact part and a first welding part, wherein the first contact part extends into the inserting opening forward, and the first welding part is positioned at the rear side of the first contact part along the inserting direction of the butt-jointing connector; the electric connector also comprises a switching circuit board connecting the first contact part and the first welding part; the switching circuit board is provided with a conducting line which is respectively and electrically connected with the first contact part and the first welding part; the distance of the two pairs of conducting lines respectively connected with the two pairs of differential signal terminals on the switching circuit board along the transverse direction of the insulating body is larger than that of the first contact parts of the two pairs of differential signal terminals, therefore, the crosstalk phenomenon in the transmission process of the two pairs of differential signals can be effectively reduced.

Description

Electric connector

[technical field]

The utility model relates to a kind of electric connector, relates in particular to a kind of electric connector that carries out high-frequency signal transmission.

[background technology]

At the end of Year 2008, USB association has issued the USB standard of 3.0 versions, this kind USB 3.0 electric connectors be on the basis of original USB 2.0 electric connectors, increase be provided with include two pairs of difference signal terminal and an earth terminal USB 3.0 terminals to improve the transmission rate of original USB electric connector.

The prior art relevant with the utility model can be consulted a kind of USB 3.0B type electric connector that is disclosed for 201374399Y number in the Chinese utility model patent CN of on December 30th, 2009 bulletin, it comprises insulating body, is immobilizated in the interior plurality of conductive terminals of insulating body and the shielding casing of coated insulation body; Wherein conducting terminal comprise be positioned at the upper strata in order to USB 3.0 terminals of transmission USB 3.0 signals and be positioned at USB 2.0 terminals in order to transmission USB 2.0 signals of lower floor.Wherein each USB 3.0 terminal includes the traversing section that extends along fore-and-aft direction and from the vertical section of the downward-sloping extension in traversing section rear end.Described traversing section comprises and is positioned at front end with contact site that electrically connects with butt connector and the holding parts that extands rearward to the insulating body rear side from the contact site rear end, and described holding parts forms installation and fixing to make things convenient for terminal from the contact site straight-line extension.In view of this, the traversing section development length of USB 3.0 terminals is longer, and spacing between the terminals of adjacent and front end contact site are consistent, make that the spacing between the traversing section terminals of adjacent is all less, then USB 3.0 connectors are when transmitting high-frequency signal, crosstalk easily because of spacing is less between adjacent two pairs of difference signal terminal, influence the high frequency performance of USB 3.0 connectors.

Therefore, be necessary existing electric connector is transformed to overcome above-mentioned defective.

[utility model content]

The purpose of this utility model is to provide a kind of and can effectively prevents to crosstalk to guarantee the electric connector of high-frequency signal transmission.

For achieving the above object, the utility model adopts following technical scheme: a kind of electric connector, comprise insulating body and be immobilizated in the interior plurality of conductive terminals of insulating body, described insulating body is provided with in order to accommodate the interface of butt connector, described conducting terminal comprises the first terminal that includes at least two pairs of difference signal terminal, described the first terminal is provided with first weld part that extends forwardly to first contact site in the interface and be positioned at the first contact site rear side along the butt connector direction of insertion, described electric connector also comprises the switching circuit board that connects first contact site and first weld part, described switching circuit board be provided with respectively with first contact site and first weld part electrically connect the conducting wire, two pairs of conducting wires that are connected respectively with two pairs of difference signal terminal on the described switching circuit board along the distance between the insulating body horizontal direction greater than the distance between first contact site of described two pairs of difference signal terminal.

In preferred embodiment, described the first terminal also comprises an earth terminal between two pairs of difference signal terminal, all of described the first terminal first contact sites equate along the distance that the insulating body horizontal direction is arranged as between a row and adjacent two first contact sites, and the described switching circuit board and first contact site be arranged in parallel and be positioned at the rear of first contact site along the butt connector direction of insertion.

In preferred embodiment, described switching circuit board front side is provided with the conducting strip that connects first contact site and conducting wire, and rear side is provided with correspondence and is connected in the rear end, conducting wire to connect the through hole on weld part top.

In preferred embodiment, described conducting wire comprise from the first of the outward-dipping extension of conducting strip rear side, the second portion that extends along the butt connector direction of insertion from the first rear end and from second portion rear end diagonally extending to connect the third part of each weld part.

In preferred embodiment, lay respectively at the outside of first contact site along the insulating body horizontal direction with the second portion of the corresponding two pairs of conducting wires of first contact site of two pairs of difference signal terminal.

In preferred embodiment, described first contact site is provided with and is positioned at front end and extends into interface with tabular first docking section that is connected with butt connector and be positioned at the rear end and be first connecting portion that bending extends to connect with switching circuit board.

In preferred embodiment, described first weld part is arranged as a row along the insulating body horizontal direction, distance between first weld part of described two pairs of difference signal terminal greater than and corresponding two pairs first contact sites of this first weld part between distance, each first weld part be provided with along the insulating body above-below direction upwards be fixed in junction in the through hole, the pars intermedia that vertically extends downwards from junction and extend leg to be connected with a female circuit board from the pars intermedia lower ends downward.

In preferred embodiment, all pars intermedias of described first weld part along the width of insulating body horizontal direction respectively greater than all first contact sites, junction and leg width along the insulating body horizontal direction, and the pars intermedia of described earth terminal along the width of insulating body horizontal direction greater than the pars intermedia of difference signal terminal width along the insulating body horizontal direction.

In preferred embodiment, the distance between adjacent two junctions and adjacent two legs is all greater than the distance between adjacent two first contact sites.

In preferred embodiment, described electric connector is a USB 3.0B type socket connector, described the first terminal is in order to transmission USB 3.0 signals, described conducting terminal also comprises four second terminals that are positioned at the first terminal downside with transmission USB 2.0 signals, described insulating body comprises base portion and first hyoplastron and second hyoplastron in base portion extends forwardly to interface, described first hyoplastron is provided with some in order to accommodate the first terminal accepting groove of first contact site, described base portion is provided with from the base portion rear surface and is arranged with forward with host cavity of accommodating switching circuit board and the some the first terminal accepting holes with fixing first contact site that are communicated with the first terminal accepting groove and host cavity, and described second hyoplastron is provided with some in order to accommodate second terminal containing slot of second terminal.

Compared with prior art, the utlity model has following beneficial effect: by being connected between contact site and the weld part switching circuit board being set, and on the switching circuit board respectively with conducting wire that two pairs of difference signal terminal are connected between distance be set to greater than the distance between the contact site of these two pairs of difference signal terminal, thereby can effectively reduce the interference that produces in adjacent two pairs of differential signal transmission processes, guarantee the high-frequency signal transmission performance of the utility model electric connector.

[description of drawings]

Fig. 1 is the three-dimensional combination figure of the utility model electric connector.

Fig. 2 is the schematic diagram of another angle of Fig. 1.

Fig. 3 is the part exploded view after the utility model electric connector decomposes shielding casing.

Fig. 4 is the schematic diagram of another angle of Fig. 3.

Fig. 5 is the further exploded view of Fig. 4.

Fig. 6 is the three-dimensional exploded view of the utility model electric connector.

Fig. 7 is the schematic diagram of another angle of Fig. 6.

Fig. 8 is the three-dimensional exploded view of the first terminal and switching circuit board and collets among Fig. 6.

Fig. 9 is the vertical view of switching circuit board among Fig. 8.

[embodiment]

Please refer to Fig. 1 to shown in Figure 9, the utility model electric connector 100 is to be welded in a female circuit board (not shown) to go up USB 3.0B type socket connector to peg graft with a butt connector (not shown).This butt connector can be the USB 3.0B type pin connector (not shown) of standard, also can be the USB 2.0B type pin connector (not shown) of standard.Described electric connector 100 comprises an insulating body 1, be immobilizated in conducting terminal 2 on the insulating body 1, be connected in the switching circuit board 8 on the conducting terminal 2 and hide the shielding casing 4 of insulating body 1 periphery.

Please refer to Fig. 5 to shown in Figure 7, described insulating body 1 is provided with base portion 11, be positioned at base portion 11 left and right sides and the both walls 110 of extending forward respectively, the diapire 111 that extends forward from base portion 11 lower ends and first hyoplastron 112 and second hyoplastron 113 that extend forward respectively from base portion 11 front end upper-lower positions.Form opening interface 114 forward between described both walls 110 and the diapire 111 to accommodate butt connector.Described interface 114 comprises and is positioned at the first narrower interface 1141 of upside and is positioned at first interface, 1141 downsides and along insulating body 1 horizontal direction second interface 1142 wideer than first interface 1141, described first interface 1141 is connected along insulating body 1 above-below direction with second interface 1142.Described first hyoplastron 112 extends forwardly in first interface 1141, and described second hyoplastron 113 extends forwardly in second interface 1142.Described first hyoplastron 112 and second hyoplastron 113 are parallel to each other, and second hyoplastron 113 is thicker than first hyoplastron 112 along insulating body 1 above-below direction.Be concaved with five the first terminal accepting grooves 1121 that extend along fore-and-aft direction on described first hyoplastron, 112 lower surfaces.Described the first terminal accepting groove 1121 does not run through the front end face of first hyoplastron 112 with restriction and location conducting terminal 2.Be concaved with a pair of second terminal containing slot 1131 that extends to insulating body 1 rear end along fore-and-aft direction on described second hyoplastron, 113 upper and lower surfaces respectively.

Described base portion 11 is provided with the host cavity 115 that is arranged with from the rear end upside accommodating switching circuit board 8, and is communicated with five terminal accommodation holes 116 of the first terminal accepting groove 1121 and host cavity 115 along insulating body 1 fore-and-aft direction.Described base portion 11 is provided with from host cavity 115 roofs and extends down into a pair of fin 1151 in the host cavity 115 compressing switching circuit board 8, thereby prevents that switching circuit board 8 from moving along insulating body 1 above-below direction.Described base portion 11 rear end downsides also are provided with second terminal containing slot 1131 along the corresponding holding slot 117 of insulating body 1 above-below direction to accommodate and fixing conducting terminal 2 rear ends.Be respectively equipped with outward extending button on the described both walls 110 and hold piece 1101, and be positioned at the depressed part 1102 that button is held piece 1101 rear sides and caved inward.Described base portion 11 also is provided with the groove 118 that caves in forward from the both sides, rear surface, and described groove 118 is positioned at the rear side of depressed part 1102 and connects along insulating body 1 fore-and-aft direction with depressed part 1102.

Please refer to Fig. 5 to shown in Figure 9, described conducting terminal 2 comprises the first terminal 21 that is positioned at the upper strata and is positioned at second terminal 22 of lower floor.Described the first terminal 21 is in order to electrically connecting USB 3.0 terminals with transmission USB 3.0 signals with the USB 3.0B type pin connector of standard, thereby the first terminal 21 includes two pairs of difference signal terminal 23 and an earth terminal 24 between two pairs of difference signal terminal 23.Described second terminal 22 is to electrically connect to transmit the USB2.0 terminal of USB 2.0 signals in order to the USB 2.0B type pin connector with standard, thereby described second terminal 22 includes a power supply terminal, a pair of difference signal terminal and an earth terminal, and lays respectively at the both sides up and down of second hyoplastron 113.

Each the first terminal 21 includes first weld part 212 that extends into first contact site 211 in first interface 1141 and be positioned at first contact site, 211 rears along insulating body 1 fore-and-aft direction (being the butt connector direction of insertion).Described first contact site 211 is arranged as a row along insulating body 1 horizontal direction, and is positioned on the same horizontal plane.Described first weld part 212 also is arranged as a row along insulating body 1 horizontal direction, and is positioned on the same vertical plane.This shows, each the first terminal 21 is divided into respectively along horizontal-extending and vertical two parts that extend, and each part is design in the form of sheets all, do not need too much bending design, so make in order to the mould (not shown) of manufacturing the first terminal 21 comparatively simple, can save the convenient again manufacturing of cost, and can use material effectively to utilize, can not produce too much waste material with punch forming the first terminal 21.Described first contact site 211 equates along the distance between identical and adjacent two first contact sites 211 of width of insulating body 1 horizontal direction.

Described switching circuit board 8 is connected between first contact site 211 and first weld part 212.The described switching circuit board 8 and first contact site 211 be arranged in parallel and are positioned at the rear of first contact site 211 along the butt connector direction of insertion.Described switching circuit board 8 is provided with some in order to the conducting strip 81 that connects with first contact site 211, the conducting wire 82 that is connected in conducting strip 81 rear sides, and corresponding and run through the through hole 83 of switching circuit board 8 along insulating body 1 above-below direction with each conducting wire 82 respectively.Described conducting strip 81 is positioned at the front end of switching circuit board 8, and described through hole 83 is positioned at the rear end of switching circuit board 8 to connect and fixing described first weld part 212, and described conducting wire 82 is electrically connected between conducting strip 81 and the through hole 83.

Each first contact site 211 is provided with first fixed part 2110 that is fixed in the terminal accommodation holes 116, extends forwardly to tabular first docking section 2111 the first terminal accepting groove 1121 in from first fixed part, 2110 front ends, reaches and bends extension downwards to connect first connecting portion 2112 of described conducting strip 81 from first fixed part, 2110 rear ends.2112 one-tenth bendings extensions of described first connecting portion are inserted host cavity 115 from back to front with guiding switching circuit board 8, and connect along insulating body 1 above-below direction and conducting strip 81.

Each first weld part 212 be provided with one along insulating body 1 above-below direction upwards be welded in junction 2121 in the through hole 83, the pars intermedias 2122 that vertically extend downwards from junction 2121 and extend leg 2123 to be connected with female circuit board from pars intermedia 2122 lower ends downward.All pars intermedias 2122 of described the first terminal 21 along the width of insulating body 1 horizontal direction respectively greater than first contact site 211, junction 2121 and leg 2123 width along insulating body 1 horizontal direction.Adjacent two junctions 2121 and adjacent two legs 2123 along the spacing of insulating body 1 horizontal direction respectively greater than adjacent two first contact sites 211 and adjacent two pars intermedias 2122 along the spacing between insulating body 1 horizontal direction, thereby can widen the distance between adjacent two the first terminals 21, prevent collision mutually in installation or the forming process, and can conveniently be welded on described switching circuit board 8 and the female circuit board, connect and cause short circuit and be difficult for the scolding tin that is used to weld.Adjacent two junctions 2121 are corresponding identical along the spacing between insulating body 1 horizontal direction with adjacent two legs 2123 along the spacing between insulating body 1 horizontal direction in the present embodiment, spacing between the junction 2121 of the junction 2121 of earth terminal 24 and the difference signal terminal 23 adjacent with earth terminal 24 greater than each to the spacing between the junction 2121 of difference signal terminal 23, and the pars intermedia 2122 of described earth terminal 24 along the width of insulating body 1 horizontal direction greater than the pars intermedia 2122 of described difference signal terminal 23 width along insulating body 1 horizontal direction, thereby make described two pairs of difference signal terminal 23 two couples, first weld part 212 along the distance between insulating body 1 horizontal direction greater than and this two couple first weld part 212 corresponding two pairs first contact sites 211 between distance, and then reduce crosstalking between described two pairs of difference signal terminal 23; And the pars intermedia 2122 of the pars intermedia 2122 relative difference signal terminal 23 of earth terminal 24 is along the wider width of insulating body 1 horizontal direction, can regulate the impedance variation that causes after distance between first weld part 212 of two pairs of difference signal terminal 23 widens, also can further reduce crosstalking between adjacent two pairs of difference signal terminal 23.

Described electric connector 100 also comprises the collets 5 of an injection mo(u)lding around first weld part 212, cause short circuit to prevent adjacent two first weld parts 212 to be in contact with one another when assembling, and first weld part 212 is installed as a whole, made easy to assembly.Described collets 5 both sides are outward extended with a pair of projection 52 respectively, and described projection 52 offsets to prevent that collets 5 from moving along the vertical direction with the inwall up and down of groove 118 respectively.

Described conducting wire 82 comprise be positioned at both sides respectively with two couples, first conducting wire 821 of two pairs of difference signal terminal 23 corresponding connections, and second conducting wire 822 to be connected in the middle of being positioned at earth terminal 24.Described conducting strip 81 and first contact site 211 are along the corresponding setting of insulating body 1 fore-and-aft direction.Described first conducting wire 821 is provided with the first 8211 from the outward-dipping extension of conducting strip 81 rear sides, the second portion 8212 that extends along the butt connector direction of insertion from first 8211 rear ends, and from the third part 8213 of second portion 8212 rear end diagonally extendings to electrically connect first weld part 212.The length that the length that described second portion 8212 extends along insulating body 1 fore-and-aft direction is extended along insulating body 1 fore-and-aft direction greater than first 8211 and third part 8213 respectively.Described second conducting wire 822 is along first contact site 211 and first weld part 212 of butt connector direction of insertion straight-line extension with electric connection earth terminal 24.

On the described switching circuit board 8 and each to difference signal terminal 23 corresponding each to the distance between first conducting wire 821 less than the distance between adjacent with second conducting wire 822 one first conducting wire 821 and second conducting wire 822.And lay respectively at the both sides of all first contact sites 211 along insulating body 1 horizontal direction with the corresponding respectively two pairs of second portions 8212 of the two pairs of difference signal terminal 23, make these two pairs of second portions 8212 along the distance between insulating body 1 horizontal direction greater than the distance between first contact site 211 of described two pairs of difference signal terminal 23, thereby widen greatly in order to the distance between two couples, first conducting wire 821 of differential signal transmission, reduce two pairs of crosstalk phenomenons in the differential signal transmission process; In addition, widen distance between these two pairs of differential signal transmission paths, conveniently regulate and control the impedance variation that causes after distance widens between these two pairs of differential signals, make stable signal transmission by switching circuit board 8 is set.

All be arranged at the same side of switching circuit board 8 in conducting strip described in the utility model 81 and conducting wire 82, really, conducting strip 81 and conducting wire 82 also can be arranged at the both sides of switching circuit board 8 respectively in other embodiments.During assembling, first contact site 211 with the first terminal 21 is installed on first hyoplastron 112 from back to front earlier, and at this moment, described fixed part 2110 is fixed in the terminal accommodation holes 116, and described first connecting portion 2112 is contained in the host cavity 115; Then, the switching circuit board 8 that is fixed with first weld part 212 is installed in the host cavity 115 from back to front, this moment, described first connecting portion 2112 edges were pressed on the conducting strip 81 downwards, and described fin 1151 also compresses switching circuit board 8 downwards so that switching circuit board 8 is fixed on the insulating body 1.

Described second terminal 22 be provided with second holding parts 222 that is immobilizated on the base portion 11 in second terminal containing slot 1131, from described second holding parts, 222 front ends extend forwardly to second contact site 221 second interface 1142 in, and from described second holding parts 222 rear ends vertical second weld part 223 of extension downwards.221 one-tenth two of described second contact sites row is respectively in cantilever-shaped second terminal containing slot 1131 that is housed in second hyoplastron, 113 upper and lower surfaces to electrically connect with USB 2.0B type pin connector.Described second weld part 223 becomes two rows to arrange along insulating body 1 fore-and-aft direction, and is contained in the holding slot 117 of base portion 11 rear sides to prevent double swerve.Described collets 5 front end downsides are provided with outstanding forward a pair of protuberance 51, and described protuberance 51 presses on the rear end of second weld part 223, and is contained in forward in the described holding slot 117, thereby prevent that second weld part 223 from moving backward.In the time of in USB 2.0B type pin connector inserts interface 114, described USB 2.0B type pin connector only is contained in second interface 1142, and only electrically connects 2.0 signals with transmission USB with second contact site 221; And when USB 3.0B type pin connector inserted in the interface 114, described USB 3.0B type pin connector filled up first, second interface 1141,1142, and electrically connected to transmit USB 3.0 signals with first, second contact site 211,221 simultaneously.

Described shielding casing 4 comprises along fore-and-aft direction detains first housing 41 and second housing of holding 42 mutually.Described first housing 41 comprises the roof 411 that hides in insulating body 1 top, bend downwards respectively from roof 411 both sides with hide insulating body 1 both sides two side 412 and the butt joint wall 413 that forms from the bending downwards of roof 411 front ends.Described butt joint wall 413 be provided with one with described interface 114 corresponding openings 4131 so that butt connector pass.Described butt joint wall 413 both sides bend backward respectively to interlock with two side 412 and hold to prevent to dock wall 413 perk forward.Be respectively equipped with on the described two side 412 a pair of in order to insulating body 1 on button hold piece 1101 interlock the button held hold hole 4121 and be positioned at described button hold hole 4121 rear sides with the elongated lockhole 4122 of second housing, 42 snap closes.Described two side 412 be respectively equipped with one from front end earlier inwardly, more backward bending extend compress shell fragment 4123, extend the button that extends to bend inwards to hold with insulating body 1 diapire 111 buttons from lower ends downward and hold sheet 4125 with the fixing pin 4124 of female circuit board holding and from the lower end.The described shell fragment 4123 that compresses extends rearwardly in the interface 114, and the left and right sides that is positioned at second hyoplastron 113 to be compressing with the butt connector both sides, thereby makes the butt connector difficult drop-off when using of pegging graft.Described second housing 42 is provided with the rear wall 421 that hides insulating body 1 rear side, the both side edges 422 of extending forward respectively from rear wall 421 both sides and the apical margin 423 that extends forward from rear wall 421 tops.The latch part 4221 that described both side edges 422 is respectively equipped with one earlier inwardly, extends forward.Described latch part 4221 comprises the flat parts 4222 that are contained in the depressed part 1101 and both sides distinguishes outward extending grip tab 4223 from flat part 4222 about.Described grip tab 4223 relevant snap closes are held in together so that first, second housing 41,42 is detained in lockhole 4122.

Get by above, the utility model electric connector 100 is by being connected between first contact site 211 of the first terminal 21 and first weld part 212 switching circuit board 8 being set, and the distance between two couples, first conducting wire 8211 that is connected with two pairs of difference signal terminal 23 respectively on the switching circuit board 8 is set to greater than the distance between first contact site 211 of these two pairs of difference signal terminal 23, thereby effectively reduces the interference in adjacent two pairs of differential signal transmission processes on horizontal plane; In addition, between first weld part 212 of described two pairs of difference signal terminal 23 along the distance of insulating body 1 horizontal direction greater than the distance between first contact site 211 of these two pairs of difference signal terminal 23, thereby widen the distance of two pairs of difference signal terminal 23, and further on vertical plane, reduce interference phenomenon in two pairs of differential signal transmission processes, and then improve the high frequency performance of the utility model electric connector 100 to a greater degree.

In sum, it below only is preferred embodiment of the present utility model, should not limit scope of the present utility model with this, promptly every simple equivalent of doing according to the utility model claims and description changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims (10)

1. electric connector, comprise insulating body and be immobilizated in the interior plurality of conductive terminals of insulating body, described insulating body is provided with in order to accommodate the interface of butt connector, described conducting terminal comprises the first terminal that includes at least two pairs of difference signal terminal, described the first terminal is provided with first weld part that extends forwardly to first contact site in the interface and be positioned at the first contact site rear side along the butt connector direction of insertion, it is characterized in that: described electric connector also comprises the switching circuit board that connects first contact site and first weld part, described switching circuit board be provided with respectively with first contact site and first weld part electrically connect the conducting wire, two pairs of conducting wires that are connected respectively with two pairs of difference signal terminal on the described switching circuit board along the distance between the insulating body horizontal direction greater than the distance between first contact site of described two pairs of difference signal terminal.

2. electric connector as claimed in claim 1, it is characterized in that: described the first terminal also comprises an earth terminal between two pairs of difference signal terminal, all of described the first terminal first contact sites equate along the distance that the insulating body horizontal direction is arranged as between a row and adjacent two first contact sites, and the described switching circuit board and first contact site be arranged in parallel and be positioned at the rear of first contact site along the butt connector direction of insertion.

3. electric connector as claimed in claim 2 is characterized in that: described switching circuit board front side is provided with the conducting strip that connects first contact site and conducting wire, and rear side is provided with correspondence and is connected in the rear end, conducting wire to connect the through hole on weld part top.

4. electric connector as claimed in claim 3 is characterized in that: described conducting wire comprise from the first of the outward-dipping extension of conducting strip rear side, the second portion that extends along the butt connector direction of insertion from the first rear end and from second portion rear end diagonally extending to connect the third part of each weld part.

5. electric connector as claimed in claim 4 is characterized in that: lay respectively at the outside of first contact site along the insulating body horizontal direction with the second portion of the corresponding two pairs of conducting wires of first contact site of two pairs of difference signal terminal.

6. electric connector as claimed in claim 3 is characterized in that: described first contact site is provided with and is positioned at front end and extends into interface with tabular first docking section that is connected with butt connector and be positioned at the rear end and be first connecting portion that bending extends to connect with switching circuit board.

7. electric connector as claimed in claim 3, it is characterized in that: described first weld part is arranged as a row along the insulating body horizontal direction, distance between first weld part of described two pairs of difference signal terminal greater than and corresponding two pairs first contact sites of this first weld part between distance, each first weld part be provided with along the insulating body above-below direction upwards be fixed in junction in the through hole, the pars intermedia that vertically extends downwards from junction and extend leg to be connected with a female circuit board from the pars intermedia lower ends downward.

8. electric connector as claimed in claim 6, it is characterized in that: all pars intermedias of described first weld part along the width of insulating body horizontal direction respectively greater than all first contact sites, junction and leg width along the insulating body horizontal direction, and the pars intermedia of described earth terminal along the width of insulating body horizontal direction greater than the pars intermedia of difference signal terminal width along the insulating body horizontal direction.

9. electric connector as claimed in claim 7 is characterized in that: the distance between adjacent two junctions and adjacent two legs is all greater than the distance between adjacent two first contact sites.

10. electric connector as claimed in claim 1, it is characterized in that: described electric connector is a USB 3.0B type socket connector, described the first terminal is in order to transmission USB 3.0 signals, described conducting terminal also comprises four second terminals that are positioned at the first terminal downside with transmission USB 2.0 signals, described insulating body comprises base portion and first hyoplastron and second hyoplastron in base portion extends forwardly to interface, described first hyoplastron is provided with some in order to accommodate the first terminal accepting groove of first contact site, described base portion is provided with from the base portion rear surface and is arranged with forward with host cavity of accommodating switching circuit board and the some the first terminal accepting holes with fixing first contact site that are communicated with the first terminal accepting groove and host cavity, and described second hyoplastron is provided with some in order to accommodate second terminal containing slot of second terminal.

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