An electrical connector assembly

Abstract

An electrical connector assembly is used to be fixed to a docking circuit board and realize signal transmission with a docking connector, and the electrical connector assembly includes a signal terminal piece and a ground terminal piece. The signal terminal piece includes an insulating body and a plurality of signal terminals fixed to the insulating body. The ground terminal piece includes a main body and at least one ground terminal fixed to the main body. Several of the signal terminal pieces and several of the ground terminal pieces are stacked to form a terminal module, and two signal terminal pieces are stacked between at least two adjacent ground terminal pieces. 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. A conductive shielding layer is formed on the outer surface of the main body of each ground terminal piece. The electrical connector assembly of the present application has better anti-interference ability.

Description

Technical field

[0001] The embodiments of the present application relate to the field of communication transmission, and in particular to an electrical connector assembly. [Background Technology]

[0002] A Gigabit Interface Connector (GBIC) is a hot-swappable input / output device that plugs into a Gigabit Ethernet port / slot and connects the port to the fiber-optic network. GBICs are interchangeable across various Cisco products and can be mixed with 1000BaseSX, 1000BaseLX / LH, or 1000BaseZX interfaces that comply with IEEE 802.3z on a port-by-port basis. Furthermore, Cisco is offering a 1000BaseLX / LH interface that fully complies with the IEEE 802.3z 1000BaseLX standard, but with a transmission distance of up to 10 km on single-mode fiber, 5 km longer than the standard 1000BaseLX interface. As new features are developed, these modules will be easier to upgrade to the latest interface technology, maximizing customer investment.

[0003] While these traditional plug-in designs have been successful in the past, they have tended to fall short of the industry's ongoing miniaturization goals. It is desirable to miniaturize transceivers to increase port density associated with network connections in applications such as distribution boxes, cable patch panels, wiring closets, and computer input / output (I / O). Traditional plug-in module configurations are unable to meet these parameters.

[0004] A new standard has been published, referred to here as the Small Form-factor Pluggable (SFP) standard. SFP stands for Small Form-factor Pluggable and can be simply understood as an upgraded version of the GBIC. SFP modules are half the size of GBIC modules, allowing for more than double the number of ports on the same panel. Other functions of SFP modules are essentially the same as GBICs. Some switch manufacturers refer to SFP modules as miniaturized GBICs (MINI-GBICs).

[0005] Currently, the industry has reached the stage of QSFP-DD (Quad Small Form-factor Pluggable Double Density), and the QSFP-DD specification has been published. It defines a high-speed communication module with eight channels. Each channel operates at 25Gbit / s or 50Gbit / s, so the QSFP-DD module supports Ethernet applications at 200Gbit / s or 400Gbit / s. As speeds increase, the requirements for mutual shielding and interference resistance between the pairs of high-speed differential signal terminals within the interface connector are becoming increasingly stringent, as are the requirements for the assembly precision of the socket connector. Traditional structures are no longer able to meet these requirements.

[0006] Therefore, it is necessary to improve such interface connectors in the prior art to further improve the performance of such interface connectors. [Summary of the invention]

[0007] The purpose of this application is to provide a new electrical connector assembly with better anti-interference capability.

[0008] In order to achieve the above objectives, this application is implemented through the following technical solutions:

[0009] An electrical connector assembly, used for being fixed to a docking circuit board and realizing signal transmission with a docking connector, the electrical connector assembly comprising:

[0010] The signal terminal piece comprises an insulating body and a plurality of signal terminals fixed to the insulating body;

[0011] A grounding terminal piece, comprising a main body and at least one grounding terminal fixed to the main body;

[0012] Each of the signal terminals includes a signal fixing portion embedded and fixed in the insulating body, a signal contact arm extending forward from the signal fixing portion along the front-to-rear direction of the electrical connector assembly and exposed outside the insulating body, and a signal connection portion extending from the signal fixing portion out of the insulating body and correspondingly electrically connected to a mating circuit board;

[0013] A plurality of the signal terminal pieces and a plurality of the ground terminal pieces are stacked to form a terminal module, and two of the signal terminal pieces are stacked between at least two adjacent ground terminal pieces;

[0014] A conductive shielding layer is formed on the outer surface of the main body of each grounding terminal piece.

[0015] Furthermore, the shielding layer is a metal layer structure formed by electroplating or spraying the outer surface of the main body, and the main body is formed by injection molding of an insulating material, or the main body is formed by injection molding of a conductive plastic.

[0016] Furthermore, a through groove is formed on the main body of the grounding 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, and the grounding terminal is integrally formed on the main body. The grounding terminal blocks the through groove and forms a blocking plate that leaks into the through groove along the left-right direction of the electrical connector assembly, and the blocking plate is opposite to the signal fixing portion of the signal terminal along the left-right direction of the electrical connector assembly.

[0017] Furthermore, the total length of the blocking plate of the ground terminal along the extension path of the signal fixing portion of the corresponding signal terminal is not less than 50% of the total length of the signal fixing portion of the signal terminal along the extension path.

[0018] Furthermore, the blocking plate is not provided with any through-hole structure.

[0019] Furthermore, at least two of the signal terminals are fixed in the insulating body of each of the signal terminal pieces, and the insulating body forms a through portion between the signal fixing portions of the two adjacent signal terminals. The extension trend of the through portion is the same as that of the signal fixing portion. A blocking portion protruding into the through portion is formed on the main body of the grounding terminal piece, and the blocking portions of the two grounding terminal pieces located on both sides of the two adjacent signal terminal pieces respectively pass through the through portions formed on the two signal terminal pieces and dock with each other.

[0020] Furthermore, each of the grounding terminals includes a grounding fixing portion fixed to the main body, a cantilevered grounding contact arm extending forward from the grounding fixing portion along the front-to-rear direction of the electrical connector assembly and exposed outside the main body, and a grounding connecting portion extending from the grounding fixing portion outside the main body and electrically connected to the docking circuit board.

[0021] The protruding areas of the corresponding signal contact arms and ground contact arms on the terminal module are defined as contact areas, and the protruding areas of the corresponding signal connection parts and ground connection parts on the terminal module are defined as docking areas. The other outer surface areas of the terminal module except the contact area and the docking area are all formed by the ground terminal sheet to form a barrier area that shields the signal terminal from the outside world.

[0022] Furthermore, the grounding terminal of each of the grounding terminal sheets is an integral metal sheet, and a flow hole is formed on a portion of the grounding terminal corresponding to the portion buried in the main body.

[0023] Furthermore, the electrical connector assembly further includes at least one serial connection member, which is assembled on the outer side of the terminal module and connects the grounding terminal pieces in series.

[0024] Furthermore, an inwardly recessed groove is formed on the outer surface of the terminal module, and each of the grounding terminals is formed with a contact end protruding into the corresponding recessed groove. The serial connector is formed with a snap hole corresponding to the contact end. The serial connector is assembled into the recessed groove, and the contact end protrudes into the snap hole corresponding to the interference. The serial connector extends in the left and right directions of the electrical connector assembly in the shape of a long strip.

[0025] Furthermore, the insulating body 11 and the main body portion constitute a body module, and the body module defines an upper surface and a lower surface that are oppositely arranged along the vertical direction of the electrical connector assembly, and defines a front face and a rear face that are oppositely arranged along the front-back direction of the electrical connector assembly, and defines two side faces that are oppositely arranged along the left-right direction of the electrical connector assembly;

[0026] The electrical connector assembly further includes a metal shell, which covers at least a portion of the upper surface and / or at least a portion of the lower surface and / or at least a portion of the rear end surface.

[0027] Furthermore, it also includes a front shell module combined with the front end position of the terminal module, the front shell module is formed with a plug-in space and an insertion port for inserting a docking connector at the front end position;

[0028] Four signal terminals are fixed in each of the insulating bodies. The signal terminals are arranged in four rows along the left-right direction of the electrical connector assembly. The signal terminals in the same row include at least one pair of high-speed differential signal terminals. A ground terminal is provided on each side of the at least one pair of high-speed differential signal terminals.

[0029] The front shell module further includes a partition plate, which divides the plugging space into an upper space and a lower space stacked in the vertical direction of the electrical connector assembly;

[0030] The signal contact arms of two rows of signal terminals protrude into the upper space, and the signal contact arms of the other two rows of signal terminals protrude into the lower space.

[0031] Furthermore, the electrical connector assembly is one of an SFP-type socket connector, an SFP-DD-type socket connector, a QSFP-type socket connector, a QSFP-DD-type socket connector, a CXP-type socket connector, or 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.

[0032] Compared with the prior art, the present application has at least the following beneficial effects: better anti-interference capability.

Brief Description of the Drawings

[0033] Figure 1 is a three-dimensional schematic diagram of the electrical connector assembly of the present application;

[0034] Figure 2 yes Figure 1 A perspective schematic diagram of the electrical connector assembly as viewed from another angle;

[0035] Figure 3 is a partial exploded perspective view of the electrical connector assembly of the present application, showing a perspective schematic diagram after the front shell module and the rear shell module are separated;

[0036] Figure 4 yes Figure 3 A perspective schematic diagram of the electrical connector assembly as viewed from another angle;

[0037] Figure 5 yes Figure 4 A further exploded perspective view of the electrical connector assembly is shown, which shows a perspective schematic diagram of the front shell module, the upper metal shell, the lower metal shell and the rear metal shell after being separated from the terminal module 200;

[0038] Figure 6 is a partial exploded perspective view of the terminal module 200 of the electrical connector assembly of the present application, showing a perspective schematic view of two signal terminal pieces and two ground terminal pieces separated from the terminal module 200;

[0039] Figure 7 is a perspective schematic diagram of a grounding terminal piece of the electrical connector assembly in the present application. Further, it shows a perspective schematic diagram of a grounding terminal piece located on the outermost side of the terminal module 200;

[0040] Figure 8 It is from Figure 3 The cross-sectional view along the AA line further shows a cross-sectional view of the rear housing module;

[0041] Figure 9 is a partial exploded perspective view of the terminal module 200 of the electrical connector assembly of the present application, showing a perspective schematic view of two serial connectors separated from the terminal module 200;

[0042] Figure 10 This is a partial exploded perspective view of the terminal module 200 of the electrical connector assembly of the present application, showing a perspective schematic diagram of two serial connectors, a signal terminal piece, and a ground terminal piece separated from the terminal module 200;

[0043] Figure 11 yes Figure 7 The exploded perspective view of the ground terminal piece shown in FIG, which shows a perspective schematic diagram of the ground terminal after being separated from the main body;

[0044] Figure 12 It is from Figure 1 Cross-sectional view along line BB. [Specific implementation method]

[0045] It should be noted that, unless there is a conflict, the embodiments and features within the embodiments in the application may be combined with each other. Furthermore, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the application based on the specific circumstances.

[0046] In the description of the application, it should be understood that the terms "including" and "having" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0047] In addition, for the accuracy of the description of this application, all directions involved in this application should be referred to as Figure 1 For reference, the X-axis extends in the left-right direction of the electrical connector assembly (i.e., the lateral direction of the electrical connector assembly); the Y-axis extends in the front-to-back direction of the electrical connector assembly (i.e., the plugging and unplugging direction of the docking connector, and also the longitudinal direction of the electrical connector assembly), with the positive direction of the Y-axis being the rear; and the Z-axis extends in the up-down direction of the electrical connector assembly (i.e., the thickness direction of the docking circuit board), with the positive direction of the Z-axis being the top. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0048] Please refer to Figures 1 to 11 As shown, the present application discloses an electrical connector assembly for fixing to a docking circuit board (not shown) and realizing signal transmission with at least one docking connector (not shown), the electrical connector assembly includes a front shell module 6 and a rear shell module 20 that are combined with each other.

[0049] Please refer to Figures 3 to 11As shown, the rear shell module 20 includes a terminal module 200 and a metal shell 5 covering the periphery of the terminal module 200. The terminal module 200 includes a plurality of signal terminal pieces 1 and a plurality of ground terminal pieces 2. Each of the signal terminal pieces 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 body portion 21 and at least one ground terminal 22 fixed to the body portion 21. The signal terminal pieces 1 and the ground terminal pieces 2 are stacked along the left and right directions of the electrical connector assembly to form the terminal module 200. Two of the signal terminal pieces 1 are clamped between at least two adjacent ground terminal pieces 2.

[0050] Please refer to Figure 6 As shown, each of the signal terminals 12 includes a signal fixing portion 121 embedded and fixed in the insulating body 11, a cantilevered signal contact arm 122 extending forward from the signal fixing portion 121 along the front-to-back direction of the electrical connector assembly and exposed outside the insulating body 11, and a signal connection portion 123 extending from the signal fixing portion 121 outside the insulating body 11 and electrically connected to the docking circuit board.

[0051] Please refer to Figure 6 、 Figure 7 and Figure 11 As shown, each grounding terminal 22 includes a grounding fixing portion 2210 fixed to the main body 21, a cantilevered grounding contact arm 2211 extending forward from the grounding fixing portion 2210 in the front-to-back direction of the electrical connector assembly and exposed outside the main body 21, and a grounding connection portion 2212 extending from the grounding fixing portion 2210 outside the main body 21 and electrically connected to the mating circuit board. In this application, the grounding terminal 22 of each grounding terminal piece 2 is a single piece of metal.

[0052] In the present application, four independent signal terminals 12 are provided in each of the signal terminal pieces 1, and a number of the signal terminals 12 are arranged in four rows along the left-right direction of the electrical connector assembly. The front end of each of the grounding terminals 21 extends forward to form four cantilevered grounding contact arms 2211, and the four cantilevered grounding contact arms 2211 correspond to the signal contact arms 122 of the four rows of signal terminals 12. In other words, the signal contact arms 122 and the grounding contact arms 2211 are arranged in four rows along the left-right direction of the electrical connector assembly. Every two adjacent signal contact arms 122 are separated by a grounding contact arm 2211. Among them, a pair of high-speed differential signal terminals are formed between the signal terminals 12 of the two adjacent signal terminal pieces 1 clamped between the two grounding terminal pieces 2, so as to achieve the effect of anti-interference and anti-noise. Such a design enables the electrical connector assembly to transmit higher high-speed signals.

[0053] Please refer to Figure 6 and Figure 11 As shown, the main body 21 of the grounding terminal piece 2 is formed by injection molding of an insulating material. A shielding layer 201 is formed on the outer surface of the main body 21 of each grounding terminal piece 2. In the present application, the shielding layer 201 is a metal layer structure formed by electroplating or spraying the outer surface of the main body 21. The shielding layer 201 can make the grounding terminal piece 2 as a whole have a grounding shielding effect, and can make the grounding terminal piece 2 as a whole have better anti-interference performance to the adjacent signal terminal piece 1. In addition, the insulating material has good fluidity. By forming the main body 21 by injection molding of the insulating material, better flatness can be guaranteed and the size (including length, width, and height) of each grounding terminal piece 2 can be controlled more accurately. In this way, the manufacturing tolerance can be better controlled, and the dielectric uniformity between each pair of high-speed differential signal terminals 12 can be more easily controlled, which is conducive to improving the high-frequency characteristics of the electrical connector assembly.

[0054] Please refer to Figure 6 and Figure 11 As shown, the body 21 of the grounding terminal piece 2 is formed with a through-slot 215 at a position corresponding to the signal fixing portion 121 of the signal terminal 12 along the left-right direction of the electrical connector assembly. The grounding terminal 22 is integrally formed with the body 21. The grounding terminal 22 blocks the through-slot 215 and is formed with a blocking plate 221 that extends into the through-slot 215 along the left-right direction of the electrical connector assembly. The blocking plate 221 faces the signal fixing portion 121 of the signal terminal 12 along the left-right direction of the electrical connector assembly. This design ensures that the grounding terminal piece 2 provides shielding and interference resistance between two adjacent pairs of high-speed differential signal terminals 12 while making the grounding terminal piece 2 thinner, thereby reducing the overall size of the electrical connector module.

[0055] Furthermore, the total length of the blocking plates 221 along the extension path of the signal-fixing portions 121 of each signal terminal 12 along the ground terminal 22 is no less than 50 percent (preferably 70 percent or greater) of the total length of the signal-fixing portions 121 of each signal terminal 12 along its extension path. This design maximizes dielectric uniformity between two adjacent pairs of high-speed differential signal terminals 12, further ensuring and enhancing the high-frequency characteristics of the electrical connector assembly. Furthermore, each blocking plate 221 is free of any through-hole structures to ensure better shielding and anti-interference performance.

[0056] Please refer to Figures 5 to 7 and Figures 9 to 11 As shown, the main body 21 of each ground terminal piece 2 is defined along the upper and lower ends of the electrical connector assembly to form an upper side edge 211 and a lower side edge 212 (see FIG. Figure 7), the main body 21 of each ground terminal piece 2 is defined along the front and rear ends of the electrical connector assembly to form a front side edge 213 and a rear side edge 214 (see Figure 7 The upper side edge 211, the lower side edge 212, and the rear side edge 214 are each formed with a protrusion 40 extending outward (i.e., formed on the outer surface of the main body module), and the metal shell 5 is correspondingly formed with a receiving groove 50 for the interference insertion of the protrusion 40. Furthermore, any two adjacent grounding terminal pieces 2 are each formed with at least one pair of mutually abutting protrusions 40 and a protrusion 4, and the protrusion 4 is interference inserted into the same receiving groove 50.

[0057] The protrusion 40 cooperates with the receiving groove 50 of the metal shell 5, and the metal shell 5 is used to position the multiple ground terminal pieces 2 and the multiple signal terminal pieces 1 after they are stacked and assembled, so that the multiple ground terminal pieces 2 and the multiple signal terminal pieces 1 can be assembled and fit more tightly. In this application, since the ground terminal pieces 2 and the signal terminal pieces 1 have a long length along the front-to-back direction of the electrical connector assembly, the ground terminal pieces 2 and the signal terminal pieces 1 have a large stacking contact area, which makes it easy for warping or poor flatness to occur during assembly. Therefore, the provision of the above-mentioned matching structure becomes particularly important.

[0058] Please refer to Figure 6 and Figure 10 As shown, the insulating body 11 forms a through portion 110 between the signal fixing portions 121 of the two signal terminals 12. The extension trend of the through portion 110 is the same as that of the signal fixing portion 121. A blocking portion 202 protruding into the through portion 110 is formed on the main body 21 of the grounding terminal piece 2. The blocking portions 202 of the two grounding terminal pieces 2 located on both sides of the two adjacent signal terminal pieces 1 respectively pass through the through portions 110 formed on the two signal terminal pieces 1 and dock with each other. Such a design enables the signal fixing portions 11 of each pair of high-speed differential signal terminals 12 to be shielded and isolated by the grounding terminal piece 2 in the left-right direction and the up-down direction, which is also for better shielding and anti-interference performance, and also for the electrical connector assembly to obtain better high-frequency performance.

[0059] Please refer to Figure 6 、 Figure 9 and Figure 10As shown, the terminal module 200 defines the area corresponding to the protrusion of the signal contact arm 122 and the ground contact arm 2211 as the contact area 101. The terminal module 200 defines the area corresponding to the protrusion of the signal connection portion 123 and the ground connection portion 2212 as the docking area 102. The other outer surface areas of the terminal module 200, except for the contact area 101 and the docking area 102, are all formed by the ground terminal plate 2 to form a barrier area 103 that shields the signal terminal 12 from the outside world, thereby facilitating shielding and anti-interference performance. In the present application, the barrier area 103 is preferably formed by the main body 21 and the ground terminal 22.

[0060] Please refer to Figure 11 As shown, a flow hole 222 is formed on the portion of the ground terminal 22 corresponding to the portion buried in the main body 21 , which facilitates the flow of hot-melt plastic material during injection molding and improves injection molding stability.

[0061] Please refer to Figure 5 、 Figure 6 、 Figure 9 and Figure 10 As shown, the electrical connector assembly further includes a plurality of serial connectors 3, which are assembled correspondingly to the outer surface of the terminal module 200 and connect the grounding terminal pieces 2 in series. Specifically, the outer surface of the terminal module 200 (here also referring to the outer surface of the main body module) is formed with an inwardly recessed recessed groove 100, and each grounding terminal 22 is formed with a contact end 223 protruding into the corresponding recessed groove 100. The serial connector 3 is formed with a snap hole 31 corresponding to the contact end 223. The serial connector 3 is assembled into the recessed groove 100, and the contact end 223 protrudes into the snap hole 31 correspondingly. The serial connector 3 extends in the left-right direction of the electrical connector assembly in an elongated strip shape.

[0062] In some embodiments, the serial connector 3 can be made of pure metal or conductive plastic. Furthermore, in some embodiments, the contact end 223 can be designed not to protrude from the outer surface of the terminal module 200. The serial connector 3 can be designed to protrude into the body module to achieve electrical connection with the contact end 223. In this application, at least one serial connector 3 is disposed on each of at least the lower surface 112 and the rear end 114 of the body module, and one of the serial connectors 3 is fixed to a position near the front end of the lower surface 112 of the body module.

[0063] The arrangement of the above-mentioned serial connection member 3 can further ensure that each grounding terminal 2 has the same zero potential at different extension positions, thereby ensuring the grounding effect, and at the same time can better achieve the contact between the metal housing 5 and the grounding terminal 2.

[0064] Please refer to Figure 4 Combined with Figure 5As shown, the insulating body 11 and the main body 21 of the terminal module 200 constitute a main body module. The main body module defines an upper surface 111 and a lower surface 112 arranged oppositely along the vertical direction of the electrical connector assembly, and defines a front face 113 and a rear face 114 arranged oppositely along the front-to-back direction of the electrical connector assembly. The main body module defines two side faces 115 arranged oppositely 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 shell 53 covers at least a part of the upper surface of the main body module (which can also be understood as the upper surface of the terminal module 200). The lower metal shell 52 covers at least a part of the lower surface of the main body module (which can also be understood as the lower surface of the terminal module 200). The rear metal shell 53 covers at least a part of the rear face of the main body module (which can also be understood as the rear face of the terminal module 200). The upper metal housing 51 and the lower metal housing 52 are interlocked at two side surfaces of the terminal module 200 (which can also be understood as two side surfaces of the terminal module 200) to form a side metal housing 504 that covers at least a portion of the two side surfaces. The rear metal housing 53 is interlocked with the side metal housing 504.

[0065] Please refer to Figures 1 to 5 As shown, the front shell module 6 is formed by injection molding of an insulating material. The front shell module 6 is formed with a plug-in space 601 and an insertion port 602 for inserting a docking connector at the front position. The rear shell module 20 is combined with the front shell module 6 along the front-to-back direction of the electrical connector assembly (preferably assembled and fixed in this application). The signal contact arm 122 and the ground contact arm 2211 at least partially protrude into the plug-in space 601. The front shell module 6 includes a base 61 and an extension 62 formed by extending backward from the rear end position of the base 61. The plug-in space 601 is formed on the base 61, and the extension 62 is arranged around the outer surface of the front end position of the main body module. In this application, the extension 62 is in the shape of a closed ring, and the extension 62 covers the outer surface of the main body module.

[0066] The front shell module 6 also includes a partition plate 63, which divides the plug-in space 601 into an upper space 6011 and a lower space 6012 stacked in the vertical direction of the electrical connector assembly; wherein 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 the present application, the split design of the front shell module 6 and the rear shell module 20 can be more convenient for assembly and is suitable for products with longer electrical connectors. At the same time, in conjunction with the metal outer 5, the serial connector 3 and the fasteners 7 described below, the positioning of multiple grounding terminal pieces 2 and multiple signal terminal pieces 1 during stacking and assembly can be more accurate, and the overall structural strength after assembly is better, while achieving better grounding and anti-interference effects.

[0067] Please refer to Figures 3 to 8 As shown, the point connector assembly also includes a fastener 7. A fixing groove 631 for accommodating the fastener 7 is formed at the rear end position of the partition plate 63. The fastener 7 exposes the fixing groove 631 rearward and is fixed to at least one of the main body parts 21. The front end edge of the main body part 21 of each grounding terminal piece 2 protrudes forward to form a boss 216. The fastener 7 forms a recess 71 corresponding to the position of the boss 216. The boss 216 interferes with the insertion recess 71 to be fixed. The fastener 7 is in the shape of an elongated strip along the left and right directions of the electrical connector assembly. The recess 71 of the fastener 7 cooperates with the boss 216 of the main body part 21, that is, the fastener 7 is used to position the multiple grounding terminal pieces 2 and the multiple signal terminal pieces 1 when they are stacked and assembled, and can also make the multiple grounding terminal pieces 2 and the multiple signal terminal pieces 1 assembled more tightly.

[0068] Please refer to Figure 2 Combined with Figure 4 As shown, the lower surface 112 of the main body module is formed with a concave-convex structure 1121 near the front end (referring to Figure 4 The extension portion 62 forms a locking structure 621 (such as a gear-like structure shown in FIG. 1 ) corresponding to all the concave-convex structures 1121. Figure 4 As shown, it refers to a gear-like structure), the concave-convex structure 1121 is engaged with the locking structure 621 (similar to the engagement of gears), so that the position of the lower surface 112 of the main body module is locked and limited with the extension part 62.

[0069] Please combine Figure 6 、 Figure 7 and Figures 9 to 12As shown, a skirt tail portion 8 is formed protruding from a local position of the insulating body 11, and a metal connecting section 9 is fixed integrally within the skirt tail portion 8. The metal connecting section 9 is not electrically connected to the corresponding signal terminal 12. The metal connecting section 9 includes a fixed section 91 embedded in the skirt tail portion 8 of the insulating body 11 and a broken section 92 extending from the fixed section 91 and protruding outside the skirt tail portion 8. The broken section 92 is connected to the material strip and formed by breaking the material strip. Furthermore, the signal terminal piece 1 is formed with an angled portion 116 at the upper corner of the rear end position. The skirt tail portion 8 is formed by protruding from the position of the angled portion 116. A corresponding position of the grounding terminal piece 2 is formed with a receiving cavity 205 for accommodating the skirt tail portion 8. The two adjacent grounding terminal pieces 2 completely cover the skirt tail portions 8 and metal connecting section 9 of the two signal terminal pieces 1 located therein. Each signal terminal piece 1 is provided with only one skirt tail portion 8.

[0070] The signal terminal piece 1 in this application, except for the contact area 101 and the docking area 102 (also referred to as the barrier area 103), is covered by the ground terminal piece 2. The signal terminal piece has no strip connection point during assembly, molding, and transportation. In this application, the location of the skirt tail 8 is designed as a separate strip connection point. At the same time, the metal connecting section 9 embedded in the skirt tail 8 serves as the connection point with the external strip. The metal connecting section 9 is not electrically connected to the corresponding signal terminal 12, reducing the impact of the metal connecting section 9 on the high-frequency transmission characteristics of the signal terminal 12.

[0071] In the present application, the electrical connector assembly is a socket connector, which can be specifically an SFP socket connector, an SFP-DD socket connector, a QSFP socket connector, a QSFP-DD socket connector, a CXP socket connector, or an OSFP socket connector.

[0072] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

[0073] The above description is only part of the implementation methods of the present application, not all of the implementation methods. Any equivalent changes made to the technical solution of the present application by ordinary technicians in this field after reading the description of the present application are covered by the claims of the present application.

Claims

1. An electrical connector assembly, used to be fixed to a docking circuit board and realize signal transmission with a docking connector, characterized in that: The electrical connector assembly comprises: The signal terminal piece comprises an insulating body and a plurality of signal terminals fixed to the insulating body; A grounding terminal piece, comprising a main body and at least one grounding terminal fixed to the main body; Each of the signal terminals includes a signal fixing portion embedded and fixed in the insulating body, a signal contact arm extending forward from the signal fixing portion along the front-to-rear direction of the electrical connector assembly and exposed outside the insulating body, and a signal connection portion extending from the signal fixing portion out of the insulating body and correspondingly electrically connected to a mating circuit board; A plurality of the signal terminal pieces and a plurality of the ground terminal pieces are stacked to form a terminal module, and two of the signal terminal pieces are stacked between at least two adjacent ground terminal pieces; A conductive shielding layer is formed on the outer surface of the main body of each grounding terminal piece; A skirt tail portion is formed by protruding from a local position of the insulating body, and a metal connecting section is fixed integrally in the skirt tail portion. The metal connecting section is not electrically connected to the corresponding signal terminal. The metal connecting section includes a fixed section buried in the skirt tail portion of the insulating body and a broken section extending from the fixed section and protruding out of the skirt tail portion. The broken section is connected to the material strip and formed by breaking the material strip.

2. The electrical connector assembly according to claim 1, wherein: The signal terminal piece is formed with an oblique angle portion at the upper corner of the rear end position, the skirt tail portion is formed by protruding from the position of the oblique angle portion, and a receiving cavity for receiving the skirt tail portion is formed at the corresponding position of the ground terminal piece.

3. The electrical connector assembly according to claim 2, wherein: The two adjacent ground terminal pieces completely cover the skirt tails and metal connecting sections of the two signal terminal pieces located therebetween.

4. The electrical connector assembly according to claim 3, wherein: The one signal terminal piece is provided with only one skirt tail portion.

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

6. The electrical connector assembly according to claim 1, wherein: A through groove is formed on the main body of the grounding 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 grounding terminal is integrally formed on the main body. The grounding terminal blocks the through groove and forms a blocking plate that leaks into the through groove along the left-right direction of the electrical connector assembly. The blocking plate is opposite to the signal fixing portion of the signal terminal along the left-right direction of the electrical connector assembly.

7. The electrical connector assembly according to claim 6, wherein: The total length of the blocking plate of the ground terminal along the extension path of the signal fixing portion of the corresponding signal terminal is not less than 50% of the total length of the signal fixing portion of the signal terminal along the extension path.

8. The electrical connector assembly according to claim 7, wherein: The blocking plate is not provided with any through-hole structure.

9. The electrical connector assembly according to claim 6, wherein: At least two signal terminals are fixed in the insulating body of each signal terminal piece, and the insulating body forms a through portion between the signal fixing portions of the two adjacent signal terminals. The extension trend of the through portion is the same as that of the signal fixing portion. A blocking portion protruding into the through portion is formed on the main body of the grounding terminal piece, and the blocking portions of the two grounding terminal pieces located on both sides of the two adjacent signal terminal pieces respectively pass through the through portions formed on the two signal terminal pieces and connect with each other.

10. The electrical connector assembly according to claim 6, 7, 8 or 9, wherein: Each of the grounding terminals includes a grounding fixing portion fixed to the main body, a cantilevered grounding contact arm extending forward from the grounding fixing portion along the front-to-rear direction of the electrical connector assembly and exposed outside the main body, and a grounding connecting portion extending from the grounding fixing portion out of the main body and electrically connected to the mating circuit board. The protruding areas of the corresponding signal contact arms and ground contact arms on the terminal module are defined as contact areas, and the protruding areas of the corresponding signal connection parts and ground connection parts on the terminal module are defined as docking areas. The other outer surface areas of the terminal module except the contact area and the docking area are all formed by the ground terminal sheet to form a barrier area that shields the signal terminal from the outside world.

11. The electrical connector assembly according to claim 1, wherein: The grounding terminal of each grounding terminal sheet is an integral metal sheet, and a flow hole is formed on a portion of the grounding terminal corresponding to the portion buried in the main body.

12. The electrical connector assembly according to claim 1, wherein: The electrical connector assembly further includes at least one serial connection piece, which is correspondingly assembled on the outer surface of the terminal module and connects the grounding terminal pieces in series.

13. The electrical connector assembly according to claim 12, wherein: The outer surface of the terminal module is formed with an inwardly recessed groove, and each of the grounding terminals is formed with a contact end protruding into the corresponding recessed groove. The serial connector is formed with a snap hole corresponding to the contact end. The serial connector is assembled into the recessed groove, and the contact end protrudes into the snap hole corresponding to the interference. The serial connector extends in the left and right directions of the electrical connector assembly in the shape of a long strip.

14. The electrical connector assembly according to claim 1, wherein: The insulating body and the main body portion constitute a body module, the body module defines an upper surface and a lower surface disposed oppositely along the vertical direction of the electrical connector assembly, the body module defines a front face and a rear face disposed oppositely along the front-to-back direction of the electrical connector assembly, and the body module defines two side faces disposed oppositely along the left-to-right direction of the electrical connector assembly; The electrical connector assembly further includes a metal shell, which covers at least a portion of the upper surface and / or at least a portion of the lower surface and / or at least a portion of the rear end surface.

15. The electrical connector assembly according to claim 1, wherein: Also included is a front shell module coupled to the front end of the terminal module, wherein the front shell module is formed with a plug-in space and an insertion port for inserting a docking connector at the front end; Four signal terminals are fixed in each of the insulating bodies. The signal terminals are arranged in four rows along the left-right direction of the electrical connector assembly. The signal terminals in the same row include at least one pair of high-speed differential signal terminals. A ground terminal is provided on each side of the at least one pair of high-speed differential signal terminals. The front shell module further includes a partition plate, which divides the plugging space into an upper space and a lower space stacked in the vertical direction of the electrical connector assembly; The signal contact arms of two rows of signal terminals protrude into the upper space, and the signal contact arms of the other two rows of signal terminals protrude into the lower space.

16. The electrical connector assembly according to claim 1, wherein: The electrical connector assembly is one of an SFP type socket connector, an SFP-DD type socket connector, a QSFP type socket connector, a QSFP-DD type socket connector, a CXP type socket connector, or 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.

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