An electrical connector assembly

Abstract

An electrical connector assembly is used to be fixed to a mating circuit board and achieve signal transmission with a mating connector. The electrical connector assembly includes: signal terminals, including an insulating body and a plurality of signal terminals fixed to the insulating body; a ground terminal piece, including a body portion and at least one ground terminal fixed to the body portion; the insulating body and the body portion form a body module; 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; at least one pair of high-speed differential signal terminals are included among the plurality of signal terminals; and a connecting piece is further included, the connecting piece is fixed to the body module and exposed on the outer surface of the body module, and the connecting piece electrically connects at least one ground terminal in each of the ground terminal pieces, having 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 Art

[0002] A Gigabit Interface Converter (GBIC) is a hot-pluggable input / output device that is inserted into a Gigabit Ethernet port / slot and is responsible for connecting the port to a fiber optic network. GBICs can be used and interchanged on various Cisco products and can be mixed with 1000BaseSX, 1000BaseLX / LH, or 1000BaseZX interfaces that comply with IEEE 802.3z on a per-port basis. Further, Cisco is offering a 1000BaseLX / LH interface that fully complies with the IEEE 802.3z 1000BaseLX standard, but its transmission distance on single-mode fiber is up to 10 kilometers, which is 5 kilometers farther than that of a normal 1000BaseLX interface. In summary, with the continuous development of new functions, it will be easier to upgrade these modules to the latest interface technology, thus maximizing the benefits of customer investment.

[0003] In the past, these traditional plug-in designs have been successful, but they tend not to achieve the goal of continuous miniaturization in the industry. It is desirable to miniaturize transceivers to increase the port density associated with network connections such as distribution boxes, cable patch panels, wiring closets, and computer input / output (I / O). Traditional plug-in module configurations cannot meet these parameter requirements.

[0004] A new standard has been announced and is hereby referred to as the Small Form-factor Pluggable (SFP) standard. SFP is an abbreviation for Small Form-factor Pluggable and can be simply understood as an upgraded version of GBIC. The volume of the SFP module is reduced by half compared to the GBIC module, and more than twice the number of ports can be configured on the same panel. Other functions of the SFP module are basically the same as those of the GBIC. Some switch manufacturers refer to the SFP module as a Miniature GBIC (MINI-GBIC).

[0005] At present, it has developed to the QSFP-DD (Quad Small Form-factor Pluggable Double Density) stage, and the QSFP-DD specification has also been announced, which defines a high-speed communication module with eight channels. The operating rate of each channel is 25 Gbit / s or 50 Gbit / s, so the QSFP-DD module supports Ethernet applications at rates of 200 Gbit / s or 400 Gbit / s. While the rate is increasing, the requirements for mutual shielding and anti-interference ability between each pair of high-speed differential signal terminals in the interface connector are also getting higher and higher, and at the same time, the assembly accuracy requirements for the socket connector are also getting higher and higher. The traditional structure can no longer meet the 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 ability.

[0008] To achieve the above purpose, this application is realized through the following technical solutions:

[0009] An electrical connector assembly is used to be fixed to a mating circuit board and achieve signal transmission with a mating connector. The electrical connector assembly includes:

[0010] Signal terminals, including an insulating body and a plurality of signal terminals fixed to the insulating body;

[0011] A ground terminal piece, including a body portion and at least one ground terminal fixed to the body portion;

[0012] The insulating body and the body portion form a body module;

[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] At least one pair of high-speed differential signal terminals is included among the plurality of signal terminals;

[0015] It further includes a connecting piece, which is fixed to the body module and exposed on the outer surface of the body module, and the connecting piece electrically connects at least one ground terminal in each ground terminal piece.

[0016] Furthermore, the ground terminal forms a contact end portion exposed outside the body portion, and each contact end portion is electrically connected to the connecting piece correspondingly.

[0017] Further, the grounding terminal is formed with a contact end portion protruding from the outer surface of the body portion. The series connection member is made of metal, and a snap hole is formed at a position corresponding to the contact end portion of the series connection member, and the contact end portion is correspondingly and interference-fitted into the snap hole.

[0018] Further, the series connection member is made of conductive plastic material.

[0019] Further, a recessed groove is formed by inward depression on the outer surface of the body module, and the series connection member is disposed in the recessed groove.

[0020] Further, the body module defines an upper surface and a lower surface that are oppositely arranged in the up-down direction of the electrical connector assembly, a front end surface and a rear end surface that are oppositely arranged in the front-rear direction of the electrical connector assembly, and two side surfaces that are oppositely arranged in the left-right direction of the electrical connector assembly;

[0021] At least one of the series connection members is provided on at least the lower surface and the rear end surface of the body module.

[0022] Further, the series connection member extends in a long strip shape in the left-right direction of the electrical connector assembly, and the series connection member fixed on the lower surface of the body module is located at a position close to the front end of the lower surface of the body module.

[0023] Further, each of the signal terminals includes a signal fixing portion buried and fixed in the insulating body, a signal contact arm extending forward from the signal fixing portion in the front-rear direction of the electrical connector assembly and exposed outside the insulating body, and a signal connection portion extending out of the insulating body and correspondingly electrically connected to the docking circuit board;

[0024] The grounding terminal includes a grounding fixing portion fixed to the body portion, a grounding contact arm extending forward from the grounding fixing portion in the front-rear direction of the electrical connector assembly and exposed outside the body portion, and a grounding connection portion extending out of the body portion and correspondingly electrically connected to the docking circuit board;

[0025] A plurality of the signal contact arms and a plurality of the grounding connection portions are arranged in four rows along the left-right direction of the electrical connector assembly, and two of the signal contact arms are provided between adjacent two of the grounding connection portions.

[0026] Further, it further includes a metal shell, and the metal shell includes an upper metal shell, a lower metal shell and a rear metal shell; the upper metal shell covers at least a partial position of the upper surface of the terminal module, the lower metal shell covers at least a partial position of the lower surface of the terminal module and the series connection member, and the rear metal shell covers at least a partial position of the rear end surface of the terminal module and the series connection member.

[0027] Further, 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 CFP type socket connector, a CXP type socket connector, and an OSFP type socket connector.

[0028] Compared with the prior art, the present application has at least the following beneficial effects: It has better anti-interference ability.

Description of the Drawings

[0029] Figure 1 is a three-dimensional schematic diagram of the electrical connector assembly of the present application;

[0030] Figure 2 is Figure 1 a three-dimensional schematic diagram of the shown electrical connector assembly viewed from another angle;

[0031] Figure 3 is a partial three-dimensional exploded view of the electrical connector assembly of the present application, which shows a three-dimensional schematic diagram after the front shell module and the rear shell module are separated;

[0032] Figure 4 is Figure 3 a three-dimensional schematic diagram of the shown electrical connector assembly viewed from another angle;

[0033] Figure 5 is Figure 4 a further three-dimensional exploded view of the shown electrical connector assembly, which shows a three-dimensional schematic diagram after the front shell module, the upper metal housing, the lower metal housing, and the rear metal housing are separated from the terminal module 200;

[0034] Figure 6 is a partial three-dimensional exploded view of the terminal module 200 of the electrical connector assembly of the present application, which shows a three-dimensional schematic diagram when two signal terminal pieces and two ground terminal pieces are separated from the terminal module 200;

[0035] Figure 7 is a three-dimensional schematic diagram of a ground terminal piece in the electrical connector assembly of the present application. Further, it shows a three-dimensional schematic diagram of a ground terminal piece located on the outermost side of the terminal module 200;

[0036] Figure 8 is from Figure 3 a cross-sectional view taken along line A-A in, which further shows a cross-sectional view of the rear shell module;

[0037] Figure 9 is a partial three-dimensional exploded view of the terminal module 200 of the electrical connector assembly of the present application, which shows a three-dimensional schematic diagram after two of the series connection parts are separated from the terminal module 200;

[0038] Figure 10FIG. 0 is a partial perspective exploded view of the terminal module 200 of the electrical connector assembly of the present application, showing a perspective schematic diagram of two series-connected parts, a signal terminal piece, and a ground terminal piece separated from the terminal module 200;

[0039] Figure 11 is Figure 7 a perspective exploded view of the ground terminal piece shown in FIG. 6, showing a perspective schematic diagram of the ground terminal separated from the body part;

[0040] Figure 12 is a cross-sectional view taken along line B-B in Figure 1 FIG. 12.

DETAILED DESCRIPTION

[0041] It should be noted that, without conflict, the embodiments in the application and the features in the embodiments can be combined with each other. In addition, unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the application can be understood according to specific circumstances.

[0042] In the description of the application, it should be understood that the terms "including" and "having" used herein and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or devices.

[0043] In addition, for the accuracy of the description of the present application, all directions involved in the present application shall be uniformly based on Figure 1 as a reference, where the extension direction of the X axis is the left-right direction of the electrical connector assembly (that is, the lateral direction of the electrical connector assembly); where the extension direction of the Y axis is the front-back direction of the electrical connector assembly (that is, the plugging and unplugging direction of the docking connector, and at the same time, it is also the longitudinal direction of the electrical connector assembly), where the positive direction of the Y axis is the back; where the extension direction of the Z axis is the up-down direction of the electrical connector assembly (that is, the thickness direction of the docking circuit board), where the positive direction of the Z axis is up). The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0044] Please refer to Figures 1 to 11As shown, the present application discloses an electrical connector assembly for being fixed to a mating circuit board (not shown) and achieving signal transmission with at least one mating connector (not shown). The electrical connector assembly includes a front housing module 6 and a rear housing module 20 which are combined with each other.

[0045] Please refer to Figures 3 to 11 As shown, the rear housing module 20 includes a terminal module 200 and a metal housing 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 in the left - right direction of the electrical connector assembly to jointly form the terminal module 200. Two of the signal terminal pieces 1 are clamped between at least two adjacent ground terminal pieces 2.

[0046] Please refer to Figure 6 As shown, each of the signal terminals 12 includes a signal fixing portion 121 buried and fixed in the insulating body 11, a cantilever - shaped signal contact arm 122 extending forward in the front - rear direction of the electrical connector assembly from the signal fixing portion 121 and exposed outside the insulating body 11, and a signal connection portion 123 extending out of the insulating body 11 from the signal fixing portion 121 and correspondingly electrically connected to the mating circuit board.

[0047] Please refer to in combination Figure 6 、 Figure 7 and Figure 11 As shown, each of the ground terminals 22 includes a ground fixing portion 2210 fixed to the body portion 21, a cantilever - shaped ground contact arm 2211 extending forward in the front - rear direction of the electrical connector assembly from the ground fixing portion 2210 and exposed outside the body portion 21, and a ground connection portion 2212 extending out of the body portion 21 from the ground fixing portion 2210 and correspondingly electrically connected to the mating circuit board. In the present application, the ground terminals 22 of each of the ground terminal pieces 2 are an integral metal sheet.

[0048] In this application, four independent signal terminals 12 are provided in each signal terminal piece 1, and a plurality of the signal terminals 12 are arranged in four rows along the left-right direction of the electrical connector assembly. At the front end of each ground terminal 21, four cantilever-shaped ground contact arms 2211 are formed to extend forward. The four cantilever-shaped ground contact arms 2211 respectively correspond to the signal contact arms 122 of the above four rows of signal terminals 12. That is to say, the plurality of signal contact arms 122 and the plurality of ground contact arms 2211 are arranged in four rows along the left-right direction of the electrical connector assembly. Each of the adjacent two signal contact arms 122 is separated by one of the ground contact arms 2211. Among them, a pair of high-speed differential signal terminals are formed between the signal terminals 12 of two adjacent signal terminal pieces 1 clamped between two ground terminal pieces 2, so as to achieve the effect of anti-interference and anti-noise. Such a design can enable the electrical connector assembly to transmit higher high-speed signals.

[0049] Please refer to Figure 6 and Figure 11 As shown, the body part 21 of the ground terminal piece 2 is formed by injection molding of an insulating material. A shielding layer 201 is formed on the outer surface of the body part 21 of each ground terminal piece 2. In this application, the shielding layer 201 is a metal layer structure formed by electroplating or spraying on the outer surface of the body part 21. The shielding layer 201 can enable the whole ground terminal piece 2 to have a ground shielding effect, and can enable the whole ground terminal piece 2 to have better anti-interference performance against the adjacent signal terminal piece 1. In addition, the insulating material has good fluidity. By forming the body part 21 by injection molding of the insulating material, better flatness can be ensured and the dimensions (including length, width, and height) of each ground terminal piece 2 can be more accurately controlled. In this way, the manufacturing tolerance can be better controlled, and the medium uniformity between each pair of high-speed differential signal terminals 12 can be more easily controlled, which is beneficial to improving the high-frequency characteristics of the electrical connector assembly.

[0050] Please refer to Figure 6 and Figure 11 As shown, a through groove 215 is formed at a position corresponding to the signal fixing part 121 of the signal terminal 12 on the body part 21 of the ground terminal piece 2 along the left-right direction of the electrical connector assembly. The ground terminal 22 is integrally formed with the body part 21. The ground terminal 22 seals the through groove 215 and forms a partition plate 221 leaking into the through groove 215 along the left-right direction of the electrical connector assembly. The partition plate 221 faces the signal fixing part 121 of the signal terminal 12 along the left-right direction of the electrical connector assembly. Such a design can, while ensuring that the ground terminal piece 2 shields and anti-interferes between adjacent two pairs of high-speed differential signal terminals 12, make the ground terminal piece 2 thinner, which is beneficial to reducing the overall size of the electrical connector module.

[0051] Further, the total length of the barrier plates 221 on the extension path of the signal fixing portions 121 of the signal terminals 12 along the grounding terminal 22 is not less than 50% (preferably 70% or even higher) of the total length of the signal fixing portions 121 of the signal terminals 12 on their extension paths. With such a design, in order to ensure as much as possible the uniformity of the dielectric between adjacent pairs of high-speed differential signal terminals 12, it is used to further ensure and improve the high-frequency characteristics of the electrical connector assembly. In addition, no through-hole structures are provided on each of the barrier plates 221 to ensure better shielding and anti-interference performance.

[0052] Please refer to Figures 5 to 7 and Figures 9 to 11 As shown, upper side edges 211 and lower side edges 212 are defined and formed at both ends of the main body portion 21 of each grounding terminal piece 2 in the up-down direction of the electrical connector assembly (see Figure 7 ), and front side edges 213 and rear side edges 214 are defined and formed at both ends of the main body portion 21 of each grounding terminal piece 2 in the front-rear direction of the electrical connector assembly (see Figure 7 ). Protrusions 40 are respectively protruded outward on the upper side edge 211, the lower side edge 212 and the rear side edge 214 (that is, formed on the outer surface of the main body module), and the metal housing 5 is correspondingly formed with receiving grooves 50 for the protrusions 40 to interfere and insert. Further. At least one pair of mutually fitting protrusions 40 are respectively formed on any two adjacent grounding terminal pieces 2 to form a protruding column 4, and the protruding column 4 interferes and inserts into the same receiving groove 50.

[0053] The cooperation between the protrusions 40 and the receiving grooves 50 of the metal housing 5 is used to position the multiple grounding terminal pieces 2 and the multiple signal terminal pieces 1 after being stacked and assembled through the metal housing 5, so that the multiple grounding terminal pieces 2 and the multiple signal terminal pieces 1 can be assembled and fitted more closely. In this application, since the grounding terminal pieces 2 and the signal terminal pieces 1 have a long length in the front-rear direction of the electrical connector assembly, the grounding terminal pieces 2 and the signal terminal pieces 1 have a large stacked contact area, and it is easy to have problems such as warping or poor flatness during assembly. Therefore, it is particularly important to provide the above-mentioned cooperation structure.

[0054] Please refer to Figure 6 and Figure 10As shown, a through portion 110 is formed between the signal fixing portions 121 of the two signal terminals 12 on the insulating body 11. The extending 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 body portion 21 of the ground terminal piece 2. The blocking portions 202 of the two ground terminal pieces 2 located on both sides of the adjacent two signal terminal pieces 1 respectively pass through the through portions 110 formed on the two signal terminal pieces 1 and are butted against each other. Such a design can shield and isolate the signal fixing portions 11 of each pair of high-speed differential signal terminals 12 in both the left-right direction and the up-down direction. Similarly, it is for better shielding and anti-interference performance, and also for the electrical connector assembly to obtain more excellent high-frequency performance.

[0055] Please refer to Figure 6 、 Figure 9 and Figure 10 As shown, the terminal module 200 defines the area where the corresponding signal contact arms 122 and the ground contact arms 2211 protrude as the contact area 101. The terminal module 200 defines the area where the corresponding signal connection portions 123 and the ground connection portions 2212 protrude as the docking area 102. The other outer surface areas of the terminal module 200 except the contact area 101 and the docking area 102 are formed by the ground terminal piece 2 to form a blocking area 103 for shielding the signal terminal 12 from the outside, which is beneficial to shielding and anti-interference performance. In this application, preferably, the blocking area 103 is jointly formed by the body portion 21 and the ground terminal 22.

[0056] Please refer to Figure 11 As shown, a material flow hole 222 is formed on the part of the ground terminal 22 correspondingly buried in the body portion 21, which is beneficial to the flow of the hot melt plastic material during injection molding and improves the injection molding stability.

[0057] Please refer to Figure 5 、 Figure 6 、 Figure 9 and Figure 10 As shown, the electrical connector assembly further includes a plurality of connecting pieces 3, and the connecting pieces 3 are correspondingly assembled on the outer side surface of the terminal module 200 and connect the ground terminal pieces 2 in series. Specifically, an inwardly recessed groove 100 is formed on the outer surface of the terminal module 200 (here it refers to the outer surface of the body module), each ground terminal 22 is formed with a contact end 223 protruding into the corresponding groove 100, the connecting piece 3 is formed with a snap hole 31 corresponding to the contact end 223, the connecting piece 3 is assembled into the groove 100, the contact end 223 interferes and protrudes into the snap hole 31, and the connecting piece 3 extends in a long strip shape along the left-right direction of the electrical connector assembly.

[0058] In some embodiments, the connecting member 3 may be made of a pure metal material, or the connecting member 3 may also be made of a conductive plastic material. In addition, in some embodiments, the contact end 223 may be designed not to protrude from the outer surface of the terminal module 200, and the connecting member 3 may be designed to protrude into the body module to achieve electrical connection with the contact end 223. In the present application, at least one of the connecting members 3 is provided on each of at least the lower surface 112 and the rear end surface 114 of the body module, and one of the connecting members 3 is fixed at a position near the front end of the lower surface 112 of the body module.

[0059] The arrangement of the connecting member 3 can further ensure that the grounding terminals 2 have the same zero potential at different extended positions, ensure the grounding effect, and at the same time can better realize the contact between the metal shell 5 and the grounding terminals 2.

[0060] Please refer to Figure 4 and in combination with Figure 5 As shown, the insulating body 11 and the body portion 21 of the terminal module 200 form the body module. The body module defines an upper surface 111 and a lower surface 112 that are oppositely arranged in the up-down direction of the electrical connector assembly, a front end surface 113 and a rear end surface 114 that are oppositely arranged in the front-rear direction of the electrical connector assembly, and two side surfaces 115 that are oppositely arranged in 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 partial position of the upper surface of the 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 partial position of the lower surface of the 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 partial position of the rear end surface of the body module (which can also be understood as the rear end surface of the terminal module 200). The upper metal shell 51 and the lower metal shell 52 are buckled with each other at the two side surfaces of the terminal module 200 (which can also be understood as the two side surfaces of the terminal module 200) to form a side metal shell 504 that covers at least a partial position of the two side surfaces. The rear metal shell 53 and the side metal shell 504 are buckled with each other.

[0061] Please refer to Figures 1 to 5As shown, the front housing module 6 is injection molded from an insulating material. The front housing module 6 forms an insertion and extraction space 601 and has an insertion port 602 at the front end for inserting a docking connector. The rear housing module 20 is combined (preferably assembled and fixed in this application) with the front housing module 6 in the front-rear direction of the electrical connector assembly. At least a part of the signal contact arm 122 and the ground contact arm 2211 protrude into the insertion and extraction space 601. The front housing module 6 includes a base 61 and an extension 62 formed by extending backward from the rear end position of the base 61. The insertion and extraction space 601 is formed on the base 61, and the extension 62 surrounds the outer surface of the front end position of the body module. In this application, the extension 62 is in a closed loop shape, and the extension 62 covers the outer surface of the body module for one week.

[0062] The front housing module 6 further includes a partition plate 63. The partition plate 63 divides the insertion and extraction space 601 into an upper space 6011 and a lower space 6012 that are stacked in the up-down 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, the separate design of the front housing module 6 and the rear housing module 20 is more conducive to assembly, is suitable for products with a longer electrical connector length, and at the same time, in cooperation with structures such as the metal outer 5, the series connection piece 3, and the fastener 7 described below, it can make the positioning of multiple ground terminal pieces 2 and multiple signal terminal pieces 1 more accurate during stacked assembly, the overall structural strength after assembly is better, and at the same time, good grounding and anti-interference effects can be achieved.

[0063] Please refer to Figures 3 to 8 As shown, the electrical connector assembly further includes a fastener 7. A fixing groove 631 for accommodating the fastener 7 is correspondingly recessed at the rear end position of the partition plate 63. The fastener 7 protrudes backward from the fixing groove 631 and is fixed to at least one of the body parts 21. A boss 216 is formed by protruding forward at the front edge of the body part 21 of each ground terminal piece 2. A depression 71 is formed at the position of the fastener 7 corresponding to the boss 216, and the boss 216 interferes and inserts into the depression 71 for fixation. The fastener 7 is in a long strip shape in the left-right direction of the electrical connector assembly. The depression 71 of the fastener 7 cooperates with the boss 216 of the body part 21, that is, the fastener 7 positions multiple ground terminal pieces 2 and multiple signal terminal pieces 1 during stacked assembly, and can also make the assembly of multiple ground terminal pieces 2 and multiple signal terminal pieces 1 fit more tightly.

[0064] Please refer to Figure 2 and in combination with Figure 4 As shown, an uneven structure 1121 is formed at a position near the front end of the lower surface 112 of the body module (referring to such as Figure 4a similar gear-like structure as shown), the extension portion 62 is formed with a locking structure 621 corresponding to all the concave and convex structures 1121 (such as Figure 4 shown, referring to a similar gear-like structure), the concave and convex structure 1121 meshes with the locking structure 621 (similar to the meshing of gears), so that the lower surface 112 of the body module is snap-limited with the extension portion 62.

[0065] Please refer to Figure 6 , Figure 7 and Figures 9 to 12 shown, a skirt tail portion 8 is formed by local protrusion of the insulating body 11, a metal connecting section 9 is integrally fixed in the skirt tail portion 8, and the metal connecting section 9 is not electrically connected to the corresponding signal terminal 12. The metal connecting section 9 includes a fixing section 91 buried in the skirt tail portion 8 of the insulating body 11 and a breaking section 92 extending from the fixing section 91 and protruding out of the skirt tail portion 8, and the breaking section 92 is connected to the tape and formed by tape breaking. Further, an oblique angle portion 116 is formed at the upper corner of the rear end position of the signal terminal piece 1, the skirt tail portion 8 protrudes from the position of the oblique angle portion 116, and a receiving cavity 205 for receiving the skirt tail portion 8 is formed at the corresponding position of the ground terminal piece 2. The skirt tail portions 8 and the metal connecting sections 9 of the two signal terminal pieces 1 located therein are completely covered by two adjacent ground terminal pieces 2. Only one skirt tail portion 8 is provided for one signal terminal piece 1.

[0066] In the present application, the area of the signal terminal piece 1 other than the above-mentioned contact area 101 and docking area 102 (that is, the blocking area 103) is covered by the ground terminal piece 2. So that there is no tape connection position for the signal terminal piece during assembly and forming handling. In the present application, the position where the skirt tail portion 8 is located is designed as a separate tape connection position, and at the same time, the metal connecting section 9 implanted in the skirt tail portion 8 is used as the connection point with the external tape, and the metal connecting section 9 is not designed to be electrically connected to the corresponding signal terminal 12, so as to reduce the influence of the metal connecting section 9 on the high-frequency transmission characteristics of the signal terminal 12.

[0067] In the present application, the electrical connector assembly is a socket connector, specifically, it can be 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, and an OSFP type socket connector.

[0068] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

[0069] The above are only some embodiments of the present application, not all embodiments. Any equivalent changes made by those of ordinary skill in the art to the technical solutions of the present application by reading the specification of the present application are covered by the claims of the present application.

Claims

1. An electrical connector assembly for being fixed to a mating circuit board and achieving signal transmission with a mating connector, characterized in that the electrical connector assembly comprises: Signal terminal pieces, including an insulating body and a plurality of signal terminals fixed to the insulating body; Ground terminal pieces, including a body portion and at least one ground terminal fixed to the body portion; The insulating body and the body portion form a body module; 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; At least one pair of high-speed differential signal terminals are included among the plurality of signal terminals; It further includes a connecting piece, the connecting piece is fixed to the body module and exposed on the outer surface of the body module, and the connecting piece electrically connects at least one ground terminal in each ground terminal piece; A skirt tail portion protrudes from a local position of the insulating body, a metal connecting section is integrally fixed in the skirt tail portion, the metal connecting section is not electrically connected to the corresponding signal terminal, the metal connecting section includes a fixing section buried in the skirt tail portion of the insulating body and a breaking section extending from the fixing section and protruding out of the skirt tail portion, and the breaking section is connected to a strip of material and formed by cutting the strip of material.

2. The electrical connector assembly according to claim 1, characterized in that: An inclined angle portion is formed at the upper corner of the rear end position of the signal terminal piece, the skirt tail portion protrudes from the position of the inclined 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, characterized in that: Two adjacent ground terminal pieces completely cover the skirt tail portions and the metal connecting sections of the two signal terminal pieces located therein.

4. The electrical connector assembly according to claim 3, characterized in that: Only one skirt tail portion is provided on one signal terminal piece.

5. The electrical connector assembly according to claim 1, characterized in that: The ground terminal forms a contact end portion exposed outside the body portion, and each contact end portion is correspondingly electrically connected to the connecting piece.

6. The electrical connector assembly according to claim 5, characterized in that: The ground terminal forms a contact end portion protruding from the outer surface of the body portion, the connecting piece is made of a metal material, a snap hole is formed at the position corresponding to the contact end portion of the connecting piece, and the contact end portion is correspondingly interference-fitted into the snap hole.

7. The electrical connector assembly according to any one of claims 1 to 6, characterized in that: The connecting piece is made of a conductive plastic material.

8. The electrical connector assembly according to any one of claims 1 to 6, characterized in that: A recessed groove is formed by inward depression on the outer surface of the body module, and the connecting piece is arranged in the recessed groove.

9. The electrical connector assembly according to any one of claims 1 to 6, characterized in that: The body module defines an upper surface and a lower surface that are oppositely arranged in the up - down direction of the electrical connector assembly, a front end face and a rear end face that are oppositely arranged in the front - rear direction of the electrical connector assembly, and two side faces that are oppositely arranged in the left - right direction of the electrical connector assembly. At least one of the series - connection components is provided on at least the lower surface and the rear end surface of the body module.

10. The electrical connector assembly according to claim 9, wherein: The series - connection component extends in a long - strip shape in the left - right direction of the electrical connector assembly, and the series - connection component fixed on the lower surface of the body module is located at a position close to the front end of the lower surface of the body module.

11. The electrical connector assembly according to any one of claims 1 to 6, wherein: Each of the signal terminals includes a signal fixing portion buried and fixed in the insulating body, a signal contact arm extending forward from the signal fixing portion in the front - rear direction of the electrical connector assembly and exposed outside the insulating body, and a signal connection portion extending out of the insulating body and correspondingly electrically connected to the docking circuit board. The ground terminal includes a ground fixing portion fixed to the body portion, a ground contact arm extending forward from the ground fixing portion in the front - rear direction of the electrical connector assembly and exposed outside the body portion, and a ground connection portion extending out of the body portion and correspondingly electrically connected to the docking circuit board. A plurality of the signal contact arms and a plurality of the ground connection portions are arranged in four rows along the left - right direction of the electrical connector assembly, and two of the signal contact arms are provided between two adjacent ground connection portions.

12. The electrical connector assembly according to claim 11, wherein: The terminal module defines the area where the corresponding signal contact arm and the ground contact arm protrude as the contact area, the area where the corresponding signal connection portion and the ground connection portion protrude as the docking area, and the other outer - surface areas of the terminal module except for the contact area and the docking area are formed by ground - terminal pieces to form a shielding area that shields the signal terminals from the outside.

13. The electrical connector assembly according to claim 9, wherein: It further includes a metal housing, and the metal housing includes an upper metal housing, a lower metal housing, and a rear metal housing; the upper metal housing covers at least a partial position of the upper surface of the terminal module, the lower metal housing covers at least a partial position of the lower surface of the terminal module and the series - connection components, and the rear metal housing covers at least a partial position of the rear end surface of the terminal module and the series - connection components.

14. The electrical connector assembly according to any one of claims 1 to 6, 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 CFP - type socket connector, a CXP - type socket connector, and an OSFP - type socket connector.

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