CN212485699U

CN212485699U - Electric connector assembly

Info

Publication number: CN212485699U
Application number: CN202021818186.9U
Authority: CN
Inventors: 曾铁武; 赵乾普; 虞程博; 斯国安; 程牧
Original assignee: Wenzhou Yihua Connector Co Ltd
Current assignee: Wenzhou Yihua Connector Co Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-02-05
Anticipated expiration: 2030-08-26

Abstract

An electric connector assembly is used for being fixed to a butt-joint circuit board and realizing signal transmission with a butt-joint connector and comprises a signal terminal plate and a grounding terminal plate. The signal terminal piece comprises an insulating body and a plurality of signal terminals fixed with the insulating body. The ground terminal piece comprises a body part and at least one ground terminal fixed with the body part. The signal terminal pieces and the grounding terminal pieces are stacked to form a terminal module, and two signal terminal pieces are stacked between at least two adjacent grounding terminal pieces. The signal terminals of the two signal terminal pieces clamped between the two adjacent ground terminal pieces comprise at least one pair of high-speed differential signal terminals. The outer surface of the body part of each grounding terminal piece is provided with a conductive shielding layer. The electric connector assembly has better anti-interference capability.

Description

Electric connector assembly

[ technical field ] A method for producing a semiconductor device

The embodiment of the application relates to the field of communication transmission, in particular to an electric connector assembly.

[ background of the invention ]

A gigabit interface connector (GBIC) is a hot-pluggable input/output device that plugs into a gigabit ethernet port/slot responsible for connecting the port to a fiber optic network. GBIC can be used and interchanged on various Cisco products, and can be mixed port by port with 1000BaseSX, 1000BaseLX/LH or 1000BaseZX interfaces that conform to IEEE 802.3 z. Further, Cisco is offering a 1000BaseLX/LH interface that fully complies with the IEEE 802.3z1000BaseLX standard, but has a transmission distance on single mode fiber of up to 10 kilometers, 5 kilometers more than the normal 1000BaseLX interface. In summary, as new functions are continuously developed, it will be easier to upgrade these modules to the latest interface technologies, thereby maximizing customer investment.

These conventional plug-in designs have been successful in the past, but they tend not to meet the goals of continued miniaturization in the industry. It is desirable to miniaturize transceivers to increase port density associated with network connections such as switchboxes, cable patch panels, wiring closets, and computer input/output (I/O). Conventional pluggable module configurations are unable to meet these parameter requirements.

A new standard has been published and is referred to herein as the hot-plug (SFP) standard, which is an abbreviation for Small Form-factor plug, and may be simply understood as an upgraded version of GBIC. The SFP module has a half of volume reduction compared with the GBIC module, and the number of ports which is more than one time can be configured on the same panel. The other functions of the SFP module are substantially identical to the GBIC. Some switch vendors call SFP modules as miniaturized GBIC (MINI-GBIC).

At present, the QSFP-DD (Small Form-factor plug-able Double sensitivity) is developed, and the QSFP-DD specification is published, which defines a high-speed communication module with eight channels. The running speed of each channel is 25Gbit/s or 50Gbit/s, so that the QSFP-DD module supports 200Gbit/s or 400Gbit/s Ethernet application. When the speed is improved, the requirements on the mutual shielding and anti-interference capability between each pair of high-speed differential signal terminals in the interface connector are higher and higher, and the requirements on the assembly accuracy of the socket connector are higher and higher. The conventional structure has failed to satisfy the demand.

Therefore, there is a need for improvements to such interface connectors in the prior art to further improve the performance of such interface connectors.

[ Utility model ] content

An object of the present application is to provide a new electrical connector assembly with better interference rejection.

In order to achieve the above purpose, the present application is implemented by the following technical solutions:

an electrical connector assembly for securing to a mating circuit board and enabling signal transmission with a mating connector, the electrical connector assembly comprising:

the signal terminal piece comprises an insulating body and a plurality of signal terminals fixed with the insulating body;

a ground terminal piece including a body portion and at least one ground terminal fixed to the body portion;

each signal terminal comprises a signal fixing part which is embedded and fixed in the insulating body, a signal contact arm which extends forwards along the front-back direction of the electric connector component from the signal fixing part and is exposed out of the insulating body, and a signal connecting part which extends out of the insulating body from the signal fixing part and is correspondingly electrically connected with the butt circuit board;

the signal terminal pieces and the grounding terminal pieces are stacked to form a terminal module, and two signal terminal pieces are stacked between at least two adjacent grounding terminal pieces;

a conductive shield layer is formed on an outer surface of the body portion of each of the ground terminal pieces.

Further, the shielding layer is a metal layer structure formed by electroplating or spraying the outer surface of the body part, and the body part is formed by injection molding of an insulating material or formed by injection molding of conductive plastic.

Further, a through groove is formed in the body portion of the ground terminal piece at a position corresponding to the signal fixing portion of the signal terminal in the left-right direction of the electrical connector assembly, the ground terminal is integrally formed in the body portion, the ground terminal blocks the through groove and is formed with a blocking plate which leaks into the through groove in the left-right direction of the electrical connector assembly, and the blocking plate faces the signal fixing portion of the signal terminal in the left-right direction of the electrical connector assembly.

Further, the total length of the blocking plate of the ground terminal along the extending path of the signal fixing part of the corresponding signal terminal is not less than fifty percent of the total length of the signal fixing part of the signal terminal along the extending path thereof.

Further, the barrier plate is not provided with any through hole structure.

Furthermore, at least two signal terminals are fixed in the insulating body of each signal terminal piece, a through part is formed between the signal fixing parts of two adjacent signal terminals by the insulating body, the extending trend of the through part is the same as that of the signal fixing parts, a blocking part protruding into the through part is formed on the body part of the grounding terminal piece, and the blocking parts of the two grounding terminal pieces positioned at two sides of the two adjacent signal terminal pieces respectively penetrate through the through parts formed on the two signal terminal pieces to be mutually butted.

Each grounding terminal comprises a grounding fixing part fixed with the body part, a cantilever-shaped grounding contact arm extending forwards from the grounding fixing part along the front-back direction of the electric connector assembly and exposed out of the body part, and a grounding connecting part extending out of the body part from the grounding fixing part and correspondingly electrically connected with the butt circuit board;

the terminal module defines the protruding areas corresponding to the signal contact arms and the ground contact arms as contact areas, the protruding areas corresponding to the signal connecting parts and the ground connecting parts on the terminal module are defined as butt-joint areas, and the other outer surface areas of the terminal module except the contact areas and the butt-joint areas form blocking areas for shielding the signal terminals from the outside by the ground terminal pieces.

Furthermore, the ground terminal of each ground terminal piece is an integral metal piece, and a material flowing hole is formed in the part of the ground terminal correspondingly embedded in the body part.

Furthermore, the electric connector assembly also comprises at least one serial connecting piece which is correspondingly assembled on the outer side surface of the terminal module and connects the grounding terminal pieces in series.

Furthermore, the outer surface of the terminal module is provided with an inward concave groove, each grounding terminal is provided with a contact end part protruding into the corresponding concave groove, the string connecting piece corresponds to the contact end part and is provided with a buckling hole, the string connecting piece is assembled into the concave groove, the contact end part correspondingly interferes with the buckling hole, and the string connecting piece extends along the left and right directions of the electric connector assembly and is in a long strip shape.

Further, the insulating body 11 and the body portion constitute a body module, the body module defines an upper surface and a lower surface which are oppositely arranged along the up-down direction of the electrical connector assembly, the body module defines a front end surface and a rear end surface which are oppositely arranged along the front-rear direction of the electrical connector assembly, and the body module defines two side surfaces which are oppositely arranged along the left-right direction of the electrical connector assembly;

the electrical connector assembly further comprises a metal housing covering at least a partial location of the upper surface and/or the metal housing covering at least a partial location of the lower surface and/or the metal housing covering at least a partial location of the rear face.

The front shell module is combined at the front end position of the terminal module, a plugging space is formed on the front shell module, and an insertion opening for inserting a butting connector is formed at the front end position of the front shell module;

four signal terminals are fixed in each insulating body, a plurality of signal terminals are arranged in four rows along the left-right direction of the electric connector assembly, the signal terminals in the same row comprise at least one pair of high-speed differential signal terminals, and two sides of each high-speed differential signal terminal are respectively provided with one grounding terminal;

the front shell module also comprises a partition plate, and the partition plate divides the plugging space into an upper space and a lower space which are stacked along the vertical direction of the electric connector assembly;

the signal contact arms of two rows of signal terminals are projected into the upper space, and the signal contact arms of the other two rows of signal terminals are projected into the lower space.

Further, the electrical connector assembly is one of an SFP type socket connector, an SFP-DD type socket connector, a QSFP-DD type socket connector, a CXP type socket connector and an OSFP type socket connector, and the signal terminals of the two signal terminal pieces clamped between the two adjacent ground terminal pieces include at least one pair of high-speed differential signal terminals.

Compared with the prior art, the application has at least the following beneficial effects: has better anti-interference capability.

[ description of the drawings ]

Fig. 1 is a perspective view of an electrical connector assembly of the present application;

fig. 2 is a perspective view of the electrical connector assembly of fig. 1 from another angle;

fig. 3 is a partial exploded perspective view of the electrical connector assembly of the present application, showing a perspective view of the front housing module separated from the rear housing module;

fig. 4 is a perspective view of the electrical connector assembly of fig. 3 from another angle;

fig. 5 is a further exploded perspective view of the electrical connector assembly of fig. 4 showing the front housing module, the upper metal shell, the lower metal shell and the rear metal shell in perspective view after they are separated from the terminal module 200;

fig. 6 is a partial exploded perspective view of the terminal module 200 of the electrical connector assembly of the present application, showing a perspective view of two signal terminal wafers and two ground terminal wafers separated from the terminal module 200;

fig. 7 is a perspective view of a piece of ground terminal plate of the electrical connector assembly of the present application, further showing a perspective view of a piece of ground terminal plate located on the outermost side of the terminal module 200;

FIG. 8 is a sectional view taken along line A-A of FIG. 3, further showing a sectional view of the backshell module;

fig. 9 is a partial exploded perspective view of the terminal module 200 of the electrical connector assembly of the present application, showing a perspective view with two of the feedthroughs separated from the terminal module 200;

fig. 10 is a partial exploded perspective view of the terminal module 200 of the electrical connector assembly of the present application, showing a perspective view of two of the series members, a signal terminal plate and a ground terminal plate separated from the terminal module 200;

fig. 11 is an exploded perspective view of the ground terminal plate shown in fig. 7, showing a perspective view of the ground terminal separated from the body portion;

fig. 12 is a cross-sectional view taken along line B-B of fig. 1.

[ detailed description ] embodiments

It should be noted that the embodiments and features of the embodiments in the application may be combined with each other without conflict. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the application can be understood by those of ordinary skill in the art as the case may be.

In the description of the application, it is to be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Furthermore, for the sake of accuracy of the description of the present application, all references to directions in the present application are made to fig. 1, wherein the X-axis extending direction is the left-right direction of the electrical connector assembly (i.e. the transverse direction of the electrical connector assembly); wherein the extending direction of the Y axis is the front-back direction of the electrical connector assembly (i.e. the plugging direction of the butting connector, and also the longitudinal direction of the electrical connector assembly), and the forward direction of the Y axis is the back; wherein the Z-axis extends in a vertical direction (i.e., a thickness direction of the opposing circuit board) of the electrical connector assembly, and wherein the Z-axis is in a positive direction. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 to 11, the present application discloses an electrical connector assembly for fixing to a mating circuit board (not shown) and performing signal transmission with at least one mating connector (not shown), the electrical connector assembly including a front housing module 6 and a rear housing module 20 combined with each other.

Referring to fig. 3 to 11, the rear housing module 20 includes a terminal module 200 and a metal shell 5 covering the terminal module 200. The terminal module 200 includes a plurality of signal terminal plates 1 and a plurality of ground terminal plates 2. Each signal terminal plate 1 includes an insulating body 11 and a plurality of signal terminals 12 fixed to the insulating body 11. Each of the ground terminal pieces 2 includes a main body 21 and at least one ground terminal 22 fixed to the main body 21. The signal terminal plate 1 and the ground terminal plate 2 are stacked along the left-right direction of the electrical connector assembly to form the terminal module 200. Two signal terminal pieces 1 are held between at least two adjacent ground terminal pieces 2.

Referring to fig. 6, each of the signal terminals 12 includes a signal fixing portion 121 embedded and fixed in the insulating body 11, a cantilever-shaped signal contact arm 122 extending forward from the signal fixing portion 121 along the front-rear direction of the electrical connector assembly and exposed out of the insulating body 11, and a signal connecting portion 123 extending from the signal fixing portion 121 out of the insulating body 11 and electrically connected to a corresponding mating circuit board.

As shown in fig. 6, 7 and 11, each of the ground terminals 22 includes a ground fixing portion 2210 fixed to the body portion 21, a cantilevered ground contact arm 2211 extending forward from the ground fixing portion 2210 along the front-back direction of the electrical connector assembly and exposed out of the body portion 21, and a ground connection portion 2212 extending out of the body portion 21 from the ground fixing portion 2210 and electrically connected to the mating circuit board. In the present application, the ground terminal 22 of each ground terminal piece 2 is a one-piece metal piece.

In the present application, four independent signal terminals 12 are provided in each signal terminal plate 1, and a plurality of the signal terminals 12 are arranged in four rows along the left-right direction of the electrical connector assembly. Four cantilevered ground contact arms 2211 are formed by extending the front end of each ground terminal 21 forward, and the four cantilevered ground contact arms 2211 correspond to the signal contact arms 122 of the four rows of signal terminals 12, respectively. That is, the signal contact arms 122 and the ground contact arms 2211 are arranged in four rows along the left-right direction of the electrical connector assembly. Each two adjacent signal contact arms 122 are spaced apart by one of the ground contact arms 2211. The signal terminals 12 of two adjacent signal terminal pieces 1 clamped between two ground terminal pieces 2 form a pair of high-speed differential signal terminals, so that the anti-interference and anti-noise effects are realized, and the design can enable the electric connector assembly to transmit higher high-speed signals.

Referring to fig. 6 and 11, the body 21 of the ground terminal plate 2 is formed by injection molding of an insulating material. A shield layer 201 is formed on the outer surface of the main body 21 of each ground terminal piece 2. In this application, the shielding layer 201 is a metal layer structure formed by electroplating or spraying the outer surface of the body portion 21. The shielding layer 201 can make the whole of the grounding terminal piece 2 have a grounding shielding effect, and can make the whole of the grounding terminal piece 2 have better anti-interference performance to the adjacent signal terminal piece 1. In addition, the insulating material has better fluidity, and the body part 21 formed by injection molding of the insulating material can ensure better flatness and more accurate control of the size (including length, width and height) of each ground terminal plate 2, so that tolerance can be better controlled, the uniformity of the medium between each pair of high-speed differential signal terminals 12 is easier to control, and the high-frequency characteristic of the electric connector assembly is improved.

Referring to fig. 6 and 11, a through groove 215 is formed in the main body 21 of the ground terminal plate 2 at a position corresponding to the signal fixing portion 121 of the signal terminal 12 in the left-right direction of the electrical connector assembly, the ground terminal 22 is integrally formed in the main body 21, the ground terminal 22 closes the through groove 215 and a blocking plate 221 is formed to leak into the through groove 215 in the left-right direction of the electrical connector assembly, and the blocking plate 221 faces the signal fixing portion 121 of the signal terminal 12 in the left-right direction of the electrical connector assembly. By the design, shielding and interference resistance between the grounding terminal piece 2 and the two adjacent pairs of high-speed differential signal terminals 12 can be guaranteed, and the grounding terminal piece 2 is thinner, so that the overall size of the electric connector module is reduced.

Further, the total length of the blocking plate 221 of the ground terminal 22 along the extending path of the signal fixing portion 121 of each signal terminal 12 is not less than fifty percent (preferably seventy percent or even higher) of the total length of the signal fixing portion 121 of the signal terminal 12 along the extending path thereof. The design is designed to ensure the medium between two adjacent pairs of high-speed differential signal terminals 12 to be uniform as much as possible, so as to further ensure and improve the high-frequency characteristic of the electrical connector assembly. In addition, each of the blocking plates 221 is not provided with any through hole structure, so as to ensure better shielding and anti-interference performance.

As shown in fig. 5 to 7 and 9 to 11, an upper edge 211 and a lower edge 212 (see fig. 7) are defined and formed at two ends of the main body 21 of each ground terminal plate 2 along the vertical direction of the electrical connector assembly, and a front edge 213 and a rear edge 214 (see fig. 7) are defined and formed at two ends of the main body 21 of each ground terminal plate 2 along the front-rear direction of the electrical connector assembly. The upper side edge 211, the lower side edge 212 and the rear side edge 214 are respectively provided with a convex portion 40 (that is, formed on the outer surface of the body module) in an outward protruding manner, and the metal shell 5 is correspondingly provided with a receiving groove 50 for the convex portion 40 to be inserted in an interference manner. And further. At least one pair of mutually attached protrusions 40 and convex columns 4 are formed on any two adjacent grounding terminal pieces 2, and the convex columns 4 are inserted into the same accommodating groove 50 in an interference manner.

The convex portion 40 is matched with the accommodating groove 50 of the metal shell 5, and the plurality of grounding terminal pieces 2 and the plurality of signal terminal pieces 1 are positioned after being stacked and assembled through the metal shell 5, so that the plurality of grounding terminal pieces 2 and the plurality of signal terminal pieces 1 can be assembled and attached more tightly. This application has longer length because ground terminal piece 2 and signal terminal piece 1 have along electric connector assembly's fore-and-aft direction to make ground terminal piece 2 and signal terminal piece 1 have great stacking contact area, the easy problem that warpage or roughness are not good that appears when the equipment, consequently set up above-mentioned cooperation structure and become especially important.

Referring to fig. 6 and 10, the insulation body 11 forms a through portion 110 between the signal fixing portions 121 of the two signal terminals 12. The through portion 110 extends in the same direction as the signal fixing portion 121. The body portion 21 of the ground terminal plate 2 is formed with a blocking portion 202 protruding into the through portion 110. The blocking portions 202 of the two ground terminal pieces 2 located on both sides of the two adjacent signal terminal pieces 1 are butted to each other through the penetrating portions 110 formed in the two signal terminal pieces 1. The signal fixing portions 11 of the high-speed differential signal terminals 12 of each pair are shielded and isolated by the ground terminal pieces 2 in the left-right direction and the up-down direction, so that the better shielding and anti-interference performance is achieved, and the better high-frequency performance is achieved for the electric connector assembly.

Referring to fig. 6, 9 and 10, the terminal module 200 defines the protruding areas of the corresponding signal contact arms 122 and ground contact arms 2211 as contact areas 101. The terminal module 200 defines the area where the corresponding signal connection portion 123 and the ground connection portion 2212 protrude as the mating area 102. The other outer surface areas of the terminal module 200 except the contact area 101 and the docking area 102 are all formed by the ground terminal plate 2 to form a blocking area 103 for shielding the signal terminal 12 from the outside, which is favorable for shielding and anti-interference performance. In the present application, the blocking area 103 is preferably formed by the body 21 and the ground terminal 22.

Referring to fig. 11, a material flowing hole 222 is formed on a portion of the ground terminal 22 embedded in the main body 21, so as to facilitate flowing of the hot melt plastic material during injection molding and improve injection molding stability.

Referring to fig. 5, 6, 9 and 10, the electrical connector assembly further includes a plurality of serial connectors 3, and the serial connectors 3 are correspondingly assembled on the outer side surfaces of the terminal modules 200 and connect the ground terminal plates 2 in series. Specifically, the outer surface of the terminal module 200 (referred to as the outer surface of the body module herein) is formed with an inwardly recessed groove 100, each of the ground terminals 22 is formed with a contact end 223 protruding into the corresponding recessed groove 100, the serial piece 3 is formed with a snap hole 31 corresponding to the contact end 223, the serial piece 3 is assembled into the recessed groove 100, the contact end 223 correspondingly interferes with the snap hole 31, and the serial piece 3 extends in a long strip shape along the left and right direction of the electrical connector assembly.

In some embodiments, the serial connector 3 may be made of a pure metal material, and the serial connector 3 may also be made of a conductive plastic material. Furthermore, in some embodiments, the contact ends 223 may be designed not to protrude beyond the outer surface of the terminal module 200, and the serial connection 3 may be designed to protrude into the body module to make electrical connection with the contact ends 223. In this application, at least one of the connecting pieces 3 is disposed on at least the lower surface 112 and the rear end surface 114 of the body module, and one of the connecting pieces 3 is fixed at a position close to the front end of the lower surface 112 of the body module.

The arrangement of the serial connection piece 3 can further ensure that each grounding terminal 2 has the same zero potential at different extending positions, so that the grounding effect is ensured, and meanwhile, the metal shell 5 can be better contacted with the grounding terminal 2.

Referring to fig. 4 in conjunction with fig. 5, the insulating body 11 and the body 21 of the terminal module 200 constitute a body module. The body module defines an upper surface 111 and a lower surface 112 opposite to each other along the vertical direction of the electrical connector assembly, a front end surface 113 and a rear end surface 114 opposite to each other along the front-rear direction of the electrical connector assembly, and two side surfaces 115 opposite to each other along the left-right direction of the electrical connector assembly. The metal shell 5 includes an upper metal shell 51, a lower metal shell 52 and a rear metal shell 53. The upper metal case 53 covers at least a partial portion of the upper surface of the body module (which may also be understood as the upper surface of the terminal module 200). The lower metal shell 52 covers at least a partial portion of the lower surface of the body module (also understood as the lower surface of the terminal module 200). The rear metal shell 53 covers at least a part of the rear end surface of the body module (also understood as the rear end surface of the terminal module 200). The upper metal shell 51 and the lower metal shell 52 are engaged with each other at two side surfaces of the terminal module 200 (which may also be understood as two side surfaces of the terminal module 200) to form a side metal shell 504 covering at least a partial position of the two side surfaces. The rear metal shell 53 and the side metal shell 504 are fastened to each other.

Referring to fig. 1 to 5, the front housing module 6 is formed by injection molding of an insulating material, the front housing module 6 is formed with a plug space 601 and an insertion opening 602 for inserting a mating connector is formed at a front end position, the rear housing module 20 is combined with the front housing module 6 along a front-rear direction of the electrical connector assembly (preferably, assembled and fixed in this application), and the signal contact arm 122 and the ground contact arm 2211 at least partially protrude into the plug space 601. The front housing module 6 includes a base 61 and an extension 62 formed by extending the rear end of the base 61 rearward, the insertion space 601 is formed on the base 61, and the extension 62 is enclosed in the outer surface of the front end of the body module. In the present application, the extension 62 is in a closed ring shape, and the extension 62 covers the outer surface of the body module for a circle.

The front shell module 6 further comprises a partition plate 63, and the partition plate 63 divides the plugging space 601 into an upper space 6011 and a lower space 6012 which are stacked in the vertical direction of the electrical connector assembly; the signal contact arms 122 of two rows of signal terminals 12 protrude into the upper space 6011, and the signal contact arms 122 of the other two rows of signal terminals 12 protrude into the lower space 6012. In this application, can be more favorable to the equipment with preceding shell module 6 and the design of the 20 components of a whole that can function independently of backshell module, be applicable to the longer product of electric connector length, cooperate the outer 5 of metal, concatenate the fastener 7 isotructures that piece 3 and following description arrived simultaneously, can make multi-disc earthing terminal piece 2 and multi-disc signal terminal piece 1 fix a position more accurately when piling up the equipment, and the overall structure intensity is better after the equipment, can realize better ground connection and anti-interference effect simultaneously again.

Referring to fig. 3 to 8, the point connector assembly further includes a fastening member 7, a fixing groove 631 receiving the fastening member 7 is concavely formed at a rear end position of the partition plate 63, and the fastening member 7 is exposed rearward of the fixing groove 631 and fixed to at least one of the body parts 21. The front end edge of the main body 21 of each ground terminal plate 2 is formed with a boss 216 projecting forward, the fastener 7 is formed with a recess 71 corresponding to the boss 216, and the boss 216 is fixed by interference with the recess 71. The fastener 7 is in a long strip shape along the left and right directions of the electric connector assembly. The recess 71 of the fastening member 7 is matched with the boss 216 of the body portion 21, that is, the fastening member 7 positions the plurality of grounding terminal pieces 2 and the plurality of signal terminal pieces 1 during stacking and assembling, so that the plurality of grounding terminal pieces 2 and the plurality of signal terminal pieces 1 can be assembled and attached more tightly.

Referring to fig. 2 and with reference to fig. 4, a concave-convex structure 1121 (referring to a similar gear-shaped structure shown in fig. 4) is formed on the lower surface 112 of the body module near the front end, a locking structure 621 (referring to a similar gear-shaped structure shown in fig. 4) is formed on the extension portion 62 corresponding to all concave-convex structures 1121, and the concave-convex structure 1121 is engaged with the locking structure 621 (referring to a similar gear-gear engagement), so that the lower surface 112 of the body module is locked and limited with the extension portion 62.

As shown in fig. 6, 7, and 9 to 12, a skirt tail 8 is formed at a local position of the insulating body 11 in a protruding manner, a metal connecting section 9 is integrally fixed in the skirt tail 8, and the metal connecting section 9 is not electrically connected to the corresponding signal terminal 12. The metal connecting section 9 comprises a fixing section 91 embedded in the skirt tail 8 of the insulating body 11 and a material breaking section 92 extending from the fixing section 91 and protruding out of the skirt tail 8, and the material breaking section 92 is connected with the material belt and is formed by material belt breaking. Furthermore, an oblique angle portion 116 is formed at an upper corner of the signal terminal plate 1 at the rear end position, the skirt tail portion 8 is formed by protruding the oblique angle portion 116, and a receiving cavity 205 for receiving the skirt tail portion 8 is formed at a corresponding position of the ground terminal plate 2. The skirt tail portions 8 and the metal connecting sections 9 of two signal terminal pieces 1 located in two adjacent ground terminal pieces 2 are completely covered by the two adjacent ground terminal pieces. The signal terminal plate 1 is provided with only one skirt tail portion 8.

The signal terminal plate 1 in the present application is covered with the ground terminal plate 2 except for the contact region 101 and the mating region 102 (i.e., the blocking region 103). The signal terminal piece do not have material area hookup location when equipment and shaping transport, in this application, has designed into solitary material area hookup location with skirt afterbody 8 position, will implant the metal in the skirt afterbody 8 and expect section 9 as the tie point with outside material area simultaneously, and metal is expected section 9 and is connected the design with corresponding signal terminal 12 does not do the electricity, reduces the influence of metal and expects section 9 to the high frequency transmission characteristic of signal terminal 12.

In this application, the electrical connector assembly is a socket connector, and may specifically be one of an SFP type socket connector, an SFP-DD type socket connector, a QSFP-DD type socket connector, a CXP type socket connector, and an OSFP type socket connector.

Although the present application has been described in detail with reference to preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present application.

The above description is only a part of the embodiments of the present application, and not all embodiments, and any equivalent changes to the technical solutions of the present application, which are made by those skilled in the art through reading the present specification, are covered by the claims of the present application.

Claims

1. An electrical connector assembly for securing to a mating circuit board and for signal transmission with a mating connector, the electrical connector assembly comprising:

2. The electrical connector assembly of claim 1, wherein: the shielding layer is a metal layer structure formed by electroplating or spraying the outer surface of the body part, the body part is formed by injection molding of an insulating material, or the body part is formed by injection molding of conductive plastic.

3. The electrical connector assembly of claim 1, wherein: the grounding terminal sheet is characterized in that a through groove is formed in the body part of the grounding terminal sheet along the left and right direction of the electric connector assembly and corresponds to the signal fixing part of the signal terminal, the grounding terminal is integrally formed in the body part, the grounding terminal blocks the through groove and is provided with a blocking plate which leaks into the through groove along the left and right direction of the electric connector assembly, and the blocking plate is opposite to the signal fixing part of the signal terminal along the left and right direction of the electric connector assembly.

4. The electrical connector assembly of claim 3, wherein: the total length of the baffle plate on the extending path of the ground terminal along the signal fixing part of the corresponding signal terminal is not less than fifty percent of the total length of the signal fixing part of the signal terminal on the extending path.

5. The electrical connector assembly of claim 4, wherein: the barrier plate is not provided with any through hole structure.

6. The electrical connector assembly of claim 3, wherein: at least two signal terminals are fixed in the insulating body of each signal terminal piece, a through part is formed between the signal fixing parts of two adjacent signal terminals by the insulating body, the extending trend of the through part is the same as that of the signal fixing parts, a blocking part protruding into the through part is formed on the body part of the grounding terminal piece, and the blocking parts of the two grounding terminal pieces positioned at two sides of the two adjacent signal terminal pieces respectively penetrate through the through parts formed on the two signal terminal pieces to be mutually butted.

7. The electrical connector assembly of claim 3 or 4 or 5 or 6, wherein:

8. The electrical connector assembly of claim 1, wherein: the ground terminal of each ground terminal piece is an integral metal piece, and a material flowing hole is formed in the part of the ground terminal, which is embedded in the body part correspondingly.

9. The electrical connector assembly of claim 1, wherein: the electric connector assembly also comprises at least one serial connecting piece which is correspondingly assembled on the outer side surface of the terminal module and connects the grounding terminal pieces in series.

10. The electrical connector assembly of claim 9, wherein: the external surface of the terminal module is provided with an inward sunken depressed groove, each grounding terminal is provided with a contact end part protruding into the corresponding depressed groove, the string connecting piece corresponds to the contact end part and is provided with a buckling hole, the string connecting piece is assembled into the depressed groove, the contact end part correspondingly interferes with the protruding buckling hole, and the string connecting piece extends along the left and right directions of the electric connector assembly and is in a long strip shape.

11. The electrical connector assembly of claim 1, wherein: the insulating body 11 and the body part form a body module, the body module is defined with an upper surface and a lower surface which are oppositely arranged along the up-down direction of the electric connector assembly, the body module is defined with a front end surface and a rear end surface which are oppositely arranged along the front-back direction of the electric connector assembly, and the body module is defined with two side surfaces which are oppositely arranged along the left-right direction of the electric connector assembly;

12. The electrical connector assembly of claim 1, wherein: the front shell module is combined at the front end position of the terminal module, a plugging space is formed on the front shell module, and an insertion opening for inserting a butting connector is formed at the front end position of the front shell module;

13. The electrical connector assembly of claim 1, wherein: the electric connector assembly is one of an SFP type socket connector, an SFP-DD type socket connector, a QSFP-DD type socket connector, a CXP type socket connector and an OSFP type socket connector, and the signal terminals of the two signal terminal pieces clamped between the two adjacent grounding terminal pieces comprise at least one pair of high-speed differential signal terminals.