A kind of electric connectorTechnical field
It the utility model is related to technical field of electric connectors, more particularly to a kind of high-speed light communication type electric connector.
Background technology
With the continuous upgrading of national bandwidth, the development of cloud, the popularization of 4G technologies and the development of 5G technologies, people coupleTransmission rate request more and more higher, communication equipment density is less and less, QSFP (Quad Small Form-factorPluggable, four-way SFP equipment) arise at the historic moment, it is as optical communication, data center and network application marketHigh density, high-speed product solution, have been widely used.However, with the raising of transmission rate, high speed signal is brought moreThe problems such as more incidence, reflection, decay, coupling, crosstalk etc., how in the small space of high density to realize the complete of high-speed signal transmissionWhole property is current all big enterprises technical barrier to be solved.
Utility model content
The purpose of this utility model is to provide a kind of electric connector, real by being designed to the size of its each terminalExisting excellent cross talk resistance energy, ensures high-speed signal transmission quality.
To use following technical scheme up to this purpose, the utility model：
A kind of electric connector, including insulating body, and the upper row's terminal group being installed in the insulating body and lower rowTerminal group；Some signal terminals and some earth terminals of upper row's terminal group and lower row's terminal group including arranged in sequenceSon, upper row's terminal group and/or lower row's terminal group also include to be consolidated for holding the terminal of signal terminal and/or ground terminalGripping member, in the position that it is coated by the terminal fixing part formed with encapsulated region on the signal terminal and/or ground terminal；
The signal terminal includes first level portion, the first contact formed by the front end bending extension in first level portionArm, bend the first vertical portion that extension is formed downwards by the rear end in first level portion, bent backward by the bottom of the first vertical portionExtend the first weld part formed；
The ground terminal includes the second horizontal part, the second contact formed by the front end bending extension of the second horizontal partArm, bend the second vertical portion that extension is formed downwards by the rear end of the second horizontal part, bent backward by the bottom of the second vertical portionExtend the second weld part formed；
The width of the head end of first contact arm of the signal terminal is 0.22mm ± 0.02mm, and first level portion is notThe width in encapsulated region is 0.5mm ± 0.02mm, and the width in the not encapsulated region of the first vertical portion is 0.54mm ± 0.02mm, theThe width of one weld part is 0.2mm ± 0.02mm；
The width of the head end of second contact arm of the ground terminal is 0.22mm ± 0.02mm, and the second horizontal part is notThe width in encapsulated region is 0.4mm ± 0.02mm, and the width in the not encapsulated region of the second vertical portion is 0.46mm ± 0.02mm；InstituteThe width for stating the second weld part is 0.2mm ± 0.02mm.
Optionally, in upper row's terminal group and lower row's terminal group, the center lines of adjacent described two signal terminals away fromFrom for 0.76mm ± 0.02mm.
Optionally, the width of the bending part between the first level portion of the signal terminal and the first contact arm and describedThe width of bending part between the second horizontal part and the second contact arm of ground terminal is 0.32mm-0.02mm~0.32mm+0.01mm。
Optionally, the width in the encapsulated region of the first level portion of the signal terminal and the first vertical portion, and described connectSecond horizontal part of ground terminal and the width in the encapsulated region of the second vertical portion are 0.27mm ± 0.02mm.
Optionally, the first level portion of each signal terminal and the second water of each ground terminal in upper row's terminal groupThe same position in flat portion is respectively formed with encapsulated region；Meanwhile in upper row's terminal group each signal terminal the first vertical portionSame position formed with encapsulated region；
The terminal fixing part includes the first retaining piece and the second retaining piece；First retaining piece is coated on row's terminalThe encapsulated region exterior of second horizontal part of the first level portion of each signal terminal and each ground terminal in group；Second fixingThe encapsulated region exterior of first vertical portion of each signal terminal in the part only row's of being coated on terminal group.
Optionally, in upper row's terminal group on the first vertical portion of each signal terminal formed with the encapsulated area of two sectionsDomain.
Optionally, in upper row's terminal group and/or lower row's terminal group, some ground terminals are arranged in parallel intervalRow, and it has been spaced two signal terminals between every two adjacent ground terminals.
Optionally, in upper row's terminal group on the first vertical portion of each signal terminal, its with it is immediate otherThe adjacent side of signal terminal, the vertical range of the outer surface in the outer surface in its encapsulated region and not encapsulated region for 0.1mm ±0.02mm；In its side adjacent with immediate ground terminal, the appearance of the outer surface in its encapsulated region and not encapsulated regionThe vertical range in face is 0.17mm ± 0.02mm.
Optionally, the terminal fixing part is formed using injection molding.
Optionally, lower row's terminal group is fitted into the insulating body using direct-assembling mode.
Compared with prior art, the utility model embodiment has the advantages that：
The utility model embodiment have adjusted the distance between signal terminal and ground terminal, signal terminal and ground terminalWidth, the shaping distance of insulating body and signal terminal, so as to change the spatial distribution of the unfavorable magnetic line of force so that overallCharacteristic impedance is consistent, effectively reduces resonance problems caused by nearly far-end cross talk so that electric connector has excellent anti-interferencePerformance, improve high-speed signal transmission quality.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior artOr the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are onlyIt is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paidPut, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is topology view of the electric connector in decomposing state of the utility model embodiment offer；
Fig. 2 is lower row's terminal group that the utility model embodiment provides and the assembling schematic diagram of insulating body；
Fig. 3 is the side view of lower row's terminal group before assembling shown in Fig. 2；
Fig. 4 is the processing technology schematic diagram for upper row's terminal group that the utility model embodiment provides；
Fig. 5 is upper row's terminal group that the utility model embodiment provides and the assembling schematic diagram of insulating body；
Fig. 6 is the side view of upper row's terminal group before assembling shown in Fig. 5；
Fig. 7 is the topology view for stamping forming upper row's terminal group that the utility model embodiment provides；
Fig. 8 is the topology view of upper row's terminal group after the injection molding that the utility model embodiment provides；
Fig. 9 is the partial enlarged view of local A in Fig. 7；
Figure 10 is the partial enlarged view of local B in Fig. 7；
Figure 11 is the partial enlarged view of Local C in Fig. 9；
Figure 12 is the near-end cross test result view for the electric connector that the utility model embodiment provides；
Figure 13 is the far-end cross talk test result view for the electric connector that the utility model embodiment provides.
Illustrate：Insulating body 1, upper row's terminal group 2, lower row's terminal 3, signal terminal 21, ground terminal 22, first are solidGripping member 23, the second retaining piece 24, first level portion 211, the first contact arm 212, the first vertical portion 213, the first weld part 214,Second horizontal part 221, the second contact arm 222, the second vertical portion 223, the second weld part 224, signal terminal 31, ground terminal32nd, first level portion 311, the first contact arm 312, the first vertical portion 313, the first weld part 314, the second horizontal part 321, secondContact arm 322, the second vertical portion 323, the second weld part 324.
Embodiment
, below will knot to enable purpose of utility model of the present utility model, feature, advantage more obvious and understandableThe accompanying drawing in the utility model embodiment is closed, the technical scheme in the embodiment of the utility model is clearly and completely described,Obviously, the embodiments described below are only the utility model part of the embodiment, and not all embodiment.Based on this realityWith the embodiment in new, those of ordinary skill in the art are obtained all other under the premise of creative work is not madeEmbodiment, belong to the scope of the utility model protection.
Embodiment one
Referring to Fig. 1, a kind of electric connector is present embodiments provided, including insulating body 1, it is installed in insulating bodyUpper row's terminal group 2 and lower row's terminal group 3.In the present embodiment, electric connector is specially QSFP connectors, for docking connectionDevice is connected, and carries out data transmission.
Refer to shown in Fig. 1 and Fig. 2, insulating body 1 includes：Interface, relative to the rear surface of interface, by interfaceIt is through to the host cavity on rear surface；Upper row's terminal group 2 and lower row's terminal group 3 are in be installed in up and down in host cavity.It is in use, rightConnecting connector is inserted by interface and electrically connected with upper row's terminal group 2 in host cavity and lower row's terminal group 3.
Refer to shown in Fig. 1 and Fig. 6, upper row's terminal group 2, including some signal terminals 21 of arranged in sequence and some ground connectionTerminal 22, and for holding the terminal fixing part of each signal terminal 21 and ground terminal 22.
Wherein, the signal terminal 21 in upper row's terminal group 2 includes first level portion 211, the front end by first level portion 211The first contact arm 212 that bending extension downwards is formed, first erecting of bending by the rear end in first level portion 211 that extension formed downwardsStraight portion 213, by bottom the first weld part 214 that vertically bending extension is formed backward of the first vertical portion 213.First contact arm212 is cantilever-shaped, including bend by the front end in first level portion 211 the extended into inside the host cavity of insulating body 1 downwardsOne contact site, to be folded upward at extending the first guidance part formed by the first contact site.
Ground terminal 22 in upper row's terminal group 2 includes the second horizontal part 221, downward by the front end of the second horizontal part 221The second contact arm 222 that bending extension is formed, second erecting of bending by the rear end of the second horizontal part 221 that extension formed vertically downwardStraight portion 223, by bottom the second weld part 224 that vertically bending extension is formed backward of the second vertical portion 223.Second contact arm222 is cantilever-shaped, including bend by the front end of the second horizontal part 221 the extended into inside the host cavity of insulating body 1 downwardsTwo contact sites, and the second guidance part for being formed of extension is folded upward at by the second contact site.
The structure of signal terminal 21 and ground terminal 22 in upper row's terminal group 2 is consistent, arranged in parallel, correspondingEach several part is located at sustained height.
Terminal fixing part includes the first retaining piece 23 and the second retaining piece 24, the side that the first retaining piece 23 passes through injection moldingFormula is coated on horizontal part (including the first level portion 211 of signal terminal 21 and the ground terminal 22 of each terminal in row's terminal groupThe second horizontal part 221) on, the second retaining piece 24 is coated on signal terminal in upper row's terminal group 2 by way of injection moldingOn 21 the first vertical portion 213, so as to which each signal terminal 21 of upper row and ground terminal 22 are integrally fixed.
On this row's terminal group 2 processing technology as shown in figure 4, including：
Punching press is carried out to metal sheet, forms some signal terminals 21 and some ground terminals 22 of arranged in sequence；
In the first retaining piece of correspondence position injection molding 23 of the horizontal part of each terminal, the correspondence in the vertical portion of each terminalThe second retaining piece of position injection molding 24；
Bending operation twice is carried out, including：Bending is carried out in the junction of horizontal part and vertical portion, in the bottom of vertical portionBending forms weld part, so far forms in Fig. 1 the upper row's terminal group 2 shown.
Based on above-mentioned processing technology, the assemble method of upper row's terminal group 2 and insulating body 1 is as shown in fig.5, so as to will be upperTerminal group 2 is arranged to insert in the host cavity of insulating body 1.
Refer to shown in Fig. 1 and Fig. 3, lower row's terminal group 3, including some signal terminals 31 of arranged in sequence and some ground connectionTerminal 32, its arrangement mode and upper row's terminal group 2 are completely the same.
Wherein, the signal terminal 31 in lower row's terminal group 3 includes first level portion 311, the front end by first level portion 311The for being folded upward at the first contact arm 312 that extension formed, bending that extension is formed vertically downward by the rear end in first level portion 311One vertical portion 313, by bottom the first weld part 314 that vertically bending extension is formed backward of the first vertical portion 313.First contactArm 312 is cantilever-shaped, including is folded upward at extending into inside the host cavity of insulating body 1 by the front end in first level portion 311First contact site, to bend the first guidance part that extension is formed downwards by the first contact site.
Ground terminal 32 in lower row's terminal group 3 includes the second horizontal part 321, upward by the front end of the second horizontal part 321The second contact arm 322 that bending extension is formed, second erecting of bending by the rear end of the second horizontal part 321 that extension formed vertically downwardStraight portion 323, by bottom the second weld part 324 that vertically bending extension is formed backward of the second vertical portion 323.Second contact arm322 is cantilever-shaped, including by the front end of the second horizontal part 321 be folded upward at extending into inside the host cavity of insulating body 1 theTwo contact sites, to bend the second guidance part that extension is formed downwards by the second contact site.
Referring to Fig. 2, lower row's terminal group 3 and the assembling mode of insulating body 1 are direct-assembling formula, it is specially：By metalSheet material is directly stamped and formed out some signal terminals 31 and some ground terminals 32 of arranged in sequence, and causes the shape of each terminal such asIt is upper described, and the afterbody of the weld part of each terminal connects a continuous material simultaneously；It is in assembling, the lower row's terminal being stamped and formed out is straightPatch in host cavity, then continuous material is cut.This direct-assembling mode, without bending operation twice, it is ensured that SMTThe flatness in face, improve product quality.
Quantity, type and the arrangement mode of terminal in lower row's terminal group 3 and upper row's terminal group 2 are completely the same.For convenienceDescription, refers to upper row's terminal group 2 after the punch forming shown in Fig. 7, including the ground connection of several spaced and parallel arrangementsTerminal 22, and it has been spaced two signal terminals 21 between every two adjacent ground terminals 22.
In order to optimize the overall inductance of electric connector, cut off and change bad magnetic line of force distribution, reduce the near, crosstalk of distal endResonance problems, the present embodiment are set to the width and mutual spacing of signal terminal 21/31 and ground terminal 22/32Meter.Because the size design scheme of upper row's terminal group 2 and lower row's terminal group 3 is completely the same, therefore, for convenience of describing, above rowIt is described, is referred to shown in Fig. 7 to Figure 11 exemplified by terminal group 2, it is specific as follows：
Distance between center line between two adjacent signal terminals 21 is 0.76mm ± 0.02mm.
The head end of the first contact arm 212 of signal terminal 21 in upper row's terminal group 2, the second contact arm of ground terminal 22The width of 222 head end is 0.22mm ± 0.02mm；
The width of bending part between the contact arm 212 of first level portion 211 and first of signal terminal 21 is 0.32mm-0.02mm~0.32mm+0.01mm, bending part between the second horizontal part 221 and the second contact arm 222 of ground terminal 22Width is 0.32mm-0.02mm~0.32mm+0.01mm；
The width in the not encapsulated region (being free of stuck point) in the first level portion 211 of signal terminal 21 be 0.5mm ± 0.02mm,The width in encapsulated region is 0.27mm ± 0.02mm；The not encapsulated region of second horizontal part 221 of ground terminal 22 is (without cardPoint) width be 0.4mm ± 0.02mm, the width in encapsulated region be 0.27mm ± 0.02mm；
The width in the not encapsulated region of the first vertical portion 213 of signal terminal 21 is 0.54mm ± 0.02mm, encapsulated regionWidth be 0.27mm ± 0.02mm；The width of second vertical portion 223 of ground terminal 22 is 0.46mm ± 0.02mm；
Second weld part 224 of the first weld part 214 of the afterbody of signal terminal 21 and the afterbody of ground terminal 22, widthIt is 0.2mm ± 0.02mm.
In addition, in the present embodiment, it is used on the first vertical portion 213 of signal terminal 21 formed with upper and lower two identicalsCoat the encapsulated region of the second retaining piece 24.First vertical portion 213 of signal terminal 21, with other immediate signal terminalsAdjacent side, the vertical range of the outer surface in its encapsulated region and the outer surface in not encapsulated region is 0.1mm ± 0.02mm；The side adjacent with immediate ground terminal, the vertical range of the outer surface in its encapsulated region and the outer surface in not encapsulated regionFor 0.17mm ± 0.02mm.
Based on above-mentioned design, the distance between signal terminal 21 and ground terminal 22, signal terminal 21 and ground connection have adjustedWidth, the insulating body 1 of terminal 22 are molded distance with signal terminal 21, so as to change the spatial distribution of the unfavorable magnetic line of force,So that overall permanence impedance is consistent, resonance problems caused by nearly far-end cross talk are effectively reduced.By near shown in Figure 12 and Figure 13End and far-end cross talk test result view are understood, using above-mentioned size design scheme so that electric connector has excellent resistJamming performance.
Described above, above example is only to illustrate the technical solution of the utility model, rather than its limitations；Although ginsengThe utility model is described in detail according to previous embodiment, it will be understood by those within the art that：It is stillTechnical scheme described in foregoing embodiments can be modified, or which part technical characteristic is equally replacedChange；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technical schemeSpirit and scope.