Low crosstalk common ground connector and method of manufacturing the same

Abstract

A low crosstalk common ground connector and its manufacturing method are disclosed. The low crosstalk common ground connector includes a base and a terminal module fixed within the base. The terminal module includes a first terminal assembly, which comprises: a plurality of first terminal pieces arranged in a row, each first terminal piece forming a first terminal intermediate section, a first terminal contact section, and a first terminal mating section; a first insulating member fixed to one end of the plurality of first terminal intermediate sections; a second insulating member fixed to the other end of the plurality of first terminal intermediate sections; a first grounding plate fixed to the first insulating member, including a first shielding plate located on one side of one end of the plurality of first terminal intermediate sections; a second grounding plate fixed to the second insulating member, including a second shielding plate located on one side of the other end of the plurality of first terminal intermediate sections; and a first path plate, one edge of which is electrically connected to the first shielding plate, and the other edge of which is electrically connected to the second shielding plate.

Description

Technical Field

[0001] This application relates to a low crosstalk common ground connector and a method for manufacturing the same. Background Technology

[0002] In the field of input / output (I / O) connectors, and more specifically, in I / O connectors that transmit and receive data at high data rates (up to 112 gigabits (Gbits)), many design factors (including specific structural design) need to be considered to meet the requirements of such high-speed transmission, such as signal crosstalk, grounding, and impedance continuity of high-speed signals along the transmission path. Existing design methods can no longer meet these requirements, posing a significant challenge to improving signal data transmission. Therefore, it is necessary to improve these designs to address this issue. Summary of the Invention

[0003] The purpose of this application is to provide a low crosstalk common ground connector and its manufacturing method, which can effectively reduce the adverse effects of crosstalk on high-speed signal transmission and also help optimize impedance continuity.

[0004] To achieve the aforementioned objective, this application provides the following technical solution: A low crosstalk common ground connector includes a base and a terminal module fixed in the base; The base has a docking cavity that opens towards the front end and a mounting cavity that communicates with the docking cavity and is located at the rear end of the base. The terminal module is installed in the mounting cavity and includes a first terminal assembly. The first terminal assembly is provided with: Multiple first terminal components are arranged in a row along the left-right direction. Each first terminal component has a first terminal middle section, a first terminal contact section connected to one end of the first terminal middle section, and a first terminal mating section connected to the other end of the first terminal middle section. The first terminal contact section protrudes into the mating cavity. A first insulating element is fixed to one end of the middle section of a plurality of first terminals; The second insulating element is fixed to the other end of the middle section of the plurality of first terminals; The first grounding piece, fixed to the first insulating member, includes a first shielding piece located on one side of one end of the middle section of the plurality of first terminals; The second grounding piece, fixed to the second insulating member, includes a second shielding piece located on one side of the other end of the middle section of the plurality of first terminals; The first path sheet has one edge electrically connected to the first shielding sheet and the other edge electrically connected to the second shielding sheet.

[0005] Furthermore, the first grounding piece also includes a plurality of first grounding contact segments extending from the first shielding piece, the plurality of first grounding contact segments being interspersed among the plurality of first terminal contact segments; The second grounding plate also includes a plurality of second grounding connection segments extending from the second shielding plate, the plurality of second grounding connection segments being interspersed among the plurality of first terminal connection segments.

[0006] Furthermore, the first shielding sheet, the second shielding sheet, and the first path sheet all extend across the full width of the middle segments of the plurality of first terminals arranged in the left-right direction.

[0007] Furthermore, the first shielding sheet, the second shielding sheet, and the first path sheet extend throughout the entire path extending along the length of any one of the middle segments of the first terminal.

[0008] Furthermore, the thickness of the first path piece is less than the thickness of the first grounding piece and less than the thickness of the second grounding piece.

[0009] Furthermore, the first path sheet is welded and fixed to the first shielding sheet, but the first insulating component is not embedded therein; The first path sheet is welded and fixed to the second shielding sheet, and no second insulating component is embedded therein.

[0010] Furthermore, the first path piece overlaps on the side surface of the first shielding sheet away from the first terminal in the thickness direction to form a first path piece overlap portion, and the first path piece is bent towards the side closer to the first terminal at a position near the first path piece overlap portion to form a first path piece bend portion. The first path piece overlaps on the side surface of the second shielding sheet away from the first terminal in the thickness direction to form the second path piece overlap portion. The first path piece is bent towards the side closer to the first terminal at the position near the second path piece overlap portion to form the second path piece bend portion. The portion of the first path piece other than the first path piece overlap, the first path piece bend, the second path piece overlap, and the second path piece bend is closer to the first terminal piece than the first path piece overlap and the second path piece overlap.

[0011] Furthermore, it also includes: a first lap piece, having a plurality of first lap portions and a first arched portion integrally connecting two adjacent first lap portions, each of the first lap portions being electrically contacted with a second grounding docking section, and the first arched portion passing over the first terminal docking section between two corresponding adjacent second grounding docking sections and not contacting the first terminal docking section; The first extended tongue extends from the first arched portion along an extension path in the length direction of the first terminal mating segment corresponding to the first arched portion and is suspended on one side in the thickness direction of the first terminal mating segment.

[0012] Furthermore, the first overlapping piece, the first shielding piece, the second shielding piece, and the first path piece are located on the same side of the plurality of first terminal pieces.

[0013] Furthermore, the terminal module further includes a second terminal assembly, which is stacked with the first terminal assembly and installed within the mounting cavity. The second terminal assembly includes: Multiple second terminal components are arranged in a row along the left-right direction. Each second terminal component has a second terminal middle section, a second terminal contact section connected to one end of the second terminal middle section, and a second terminal mating section connected to the other end of the second terminal middle section. The second terminal contact section protrudes into the mating cavity. The second terminal contact section and the first terminal contact section are located on opposite sides of the mating cavity. The third insulating element is fixed to one end of the middle section of the plurality of second terminals; The fourth insulating element is fixed to the other end of the middle section of the plurality of second terminals; The third grounding piece, fixed to the third insulating member, includes a third shielding piece located on one side of one end of the middle section of the plurality of second terminals; The fourth grounding piece, fixed to the fourth insulating member, includes a fourth shielding piece located on one side of the other end of the middle section of the plurality of second terminals; The second path sheet has one edge electrically connected to the third shielding sheet and the other edge electrically connected to the fourth shielding sheet; The first shielding sheet, the second shielding sheet, and the first path sheet are located on the side of the plurality of first terminal pieces closer to the second terminal piece; The third shielding plate, the fourth shielding plate, and the second path plate are located on the side of the plurality of second terminal pieces closer to the first terminal piece.

[0014] Furthermore, the third grounding plate also includes a plurality of third grounding contact segments extending from the third shielding plate, the plurality of third grounding contact segments being interspersed among the plurality of second terminal contact segments; The fourth grounding plate also includes a plurality of fourth grounding connection segments extending from the fourth shielding plate, the plurality of fourth grounding connection segments being interspersed among the plurality of second terminal connection segments. Furthermore, it also includes: a second lap piece, having formed a plurality of second lap portions and a second arched portion integrally connecting two adjacent second lap portions, each of the second lap portions being electrically contacted with the fourth grounding docking section, and the second arched portion passing over the second terminal docking section between the corresponding two adjacent fourth grounding docking sections and not contacting the second terminal docking section; The second extended tongue extends from the second arched portion along the length direction of the second terminal mating section corresponding to the second arched portion and is suspended on one side of the thickness direction of the second terminal mating section. The second lap piece is located on the side of the plurality of second terminal pieces closer to the first terminal piece.

[0015] Furthermore, the third shielding plate, the fourth shielding plate, and the second path plate all extend across the full width of the middle segments of the multiple second terminals arranged in the left-right direction; The third shielding plate, the fourth shielding plate, and the second path plate extend along the entire length of any one of the middle segments of the second terminal.

[0016] Furthermore, the thickness of the second path piece is less than the thickness of the third grounding piece and less than the thickness of the fourth grounding piece.

[0017] Furthermore, the second path sheet is welded and fixed to the third shielding sheet, but no third insulating component is embedded in it; The second path sheet is welded and fixed to the fourth shielding sheet, but the fourth insulating component is not embedded.

[0018] Furthermore, the second path piece overlaps on the side surface of the third shielding sheet away from the second terminal in the thickness direction to form a third path piece overlap portion, and the second path piece is bent towards the side closer to the second terminal at a position near the third path piece overlap portion to form a third path piece bend portion. The second path piece overlaps with the fourth shielding sheet on the side surface away from the second terminal in the thickness direction to form the fourth path piece overlap portion. The second path piece is bent towards the side closer to the second terminal at the position near the fourth path piece overlap portion to form the fourth path piece bend portion. The other parts of the second path piece, excluding the overlapping portion of the third path piece, the bent portion of the third path piece, the overlapping portion of the fourth path piece, and the bent portion of the fourth path piece, are closer to the second terminal piece than the overlapping portion of the third path piece and the overlapping portion of the fourth path piece.

[0019] To achieve the aforementioned objective, this application also provides the following technical solution: A method for manufacturing a low crosstalk common ground connector as described in any of the above claims includes the following steps: S1. Prepare multiple first terminal pieces, and form a first insulating element and a second insulating element on the multiple first terminal pieces by one injection molding process; S2. Prepare a first grounding piece and a second grounding piece, and fix the first grounding piece and the second grounding piece to the first insulating component and the second insulating component respectively through one injection molding to form a semi-finished first terminal assembly; S3. The first terminal assembly of the semi-finished product obtained in step S2 is bent, and the specific bending position is the middle position of the middle section of the first terminal. S4. Prepare the first path piece, and weld and fix the first path piece to the first grounding piece and the second grounding piece of the first terminal assembly obtained in step S3; S5. Prepare the base and assemble the first terminal assembly obtained in step S4 into the base.

[0020] Furthermore, during step S4 or before step S3, the following operation is also included: preparing a first lap joint piece and welding the first lap joint piece to a plurality of second grounding connection segments.

[0021] To achieve the aforementioned objective, this application also provides the following technical solution: A method for manufacturing a low crosstalk common ground connector as described in any of the above claims includes the following steps: S1. Prepare multiple first terminal pieces, and form a first insulating element and a second insulating element on the multiple first terminal pieces through one injection molding process; prepare multiple second terminal pieces, and form a third insulating element and a fourth insulating element on the multiple second terminal pieces through one injection molding process; S2. Prepare a first grounding piece and a second grounding piece, and fix the first grounding piece and the second grounding piece to the first insulating component and the second insulating component respectively through one injection molding to form a semi-finished first terminal assembly; prepare a third grounding piece and a fourth grounding piece, and fix the third grounding piece and the fourth grounding piece to the third insulating component and the fourth insulating component respectively through one injection molding to form a semi-finished second terminal assembly; S3. The first terminal assembly of the semi-finished product obtained in step S2 is bent, specifically at the middle position of the middle section of the first terminal; the second terminal assembly of the semi-finished product obtained in step S2 is bent, specifically at the middle position of the middle section of the second terminal. S4. Prepare a first path piece, and weld the first path piece to the first grounding piece and the second grounding piece of the first terminal assembly obtained in step S3; prepare a second path piece, and weld the second path piece to the third grounding piece and the fourth grounding piece of the second terminal assembly obtained in step S3. S5. Prepare the base, and assemble the second terminal assembly obtained in step S4 into the base; assemble the first terminal assembly obtained in step S4 into the base; Alternatively, step S5 can be performed by: preparing a base, stacking the second terminal assembly with the second path piece integrated in step S4 and the first terminal assembly with the first path piece integrated together, and then assembling them into the base simultaneously.

[0022] Furthermore, during step S4 or before step S3, the following operations are also included: preparing a first lap joint piece and welding the first lap joint piece to a plurality of second grounding connection segments; preparing a second lap joint piece and welding the second lap joint piece to a plurality of fourth grounding connection segments.

[0023] Compared with the prior art, the beneficial effects of this application are: it can effectively reduce the adverse effects of crosstalk on high-speed signal transmission, and it is also conducive to optimizing impedance continuity. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the low crosstalk common ground connector of this application.

[0025] Figure 2 yes Figure 1 A three-dimensional schematic diagram of a low-crosstalk common ground connector viewed from another angle.

[0026] Figure 3 This is a partial exploded perspective view of the low crosstalk common ground connector of this application, specifically showing a perspective view of the terminal module after it has been separated from the base.

[0027] Figure 4 This is a front view of the low crosstalk common ground connector of this application.

[0028] Figure 5 This is a rear view of the low crosstalk common ground connector of this application.

[0029] Figure 6 It is self Figure 4 A cross-sectional view along line AA in the middle.

[0030] Figure 7 yes Figure 6 A schematic diagram of the sectional view after the base has been removed.

[0031] Figure 8 This is a partial exploded perspective view of the terminal module of the low crosstalk common ground connector of this application, specifically showing a perspective view of the first terminal assembly and the second terminal assembly when separated.

[0032] Figure 9 yes Figure 8A further exploded perspective view of the middle terminal module specifically shows a perspective view after the first path piece and the first overlapping piece are separated from the first terminal assembly and the second path piece and the second overlapping piece are separated from the second terminal assembly.

[0033] Figure 10 yes Figure 9 A further exploded 3D diagram of the middle terminal module.

[0034] Figure 11 yes Figure 9 A three-dimensional diagram viewed from another angle.

[0035] Figure 12 This is an exploded perspective view of the terminal module of the low crosstalk common ground connector of this application. Detailed Implementation

[0036] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0037] In this application description, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] In the description of this application, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, 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 that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product, or apparatus.

[0039] In this application, all directions should be referred to as... Figure 1 For reference, the direction of the X-axis is defined as the left-right direction; the direction of the Y-axis is defined as the up-down direction, with the positive direction of the Y-axis being up; and the direction of the Z-axis is defined as the front-back direction, with the positive direction of the Z-axis being back.

[0040] Please refer to the reference. Figures 1 to 12The diagram illustrates a low crosstalk common ground connector used in this application, comprising a base 1 and a terminal module 10 fixed within the base 1. The base 1 is integrally injection molded from insulating material. The base 1 forms a mating cavity 101 opening towards the front end and a mounting cavity 102 communicating with the mating cavity 101 and opening towards the rear end. In the illustrated embodiment, the mounting cavity 102 is open towards the rear end, and also opens downwards near the rear end. The terminal module 10 is mounted from rear to front within the mounting cavity 102, and the terminal module 10 includes a first terminal assembly 20 and a second terminal assembly 50. The low crosstalk common ground connector can also be used in conjunction with a metal shielding cage (not shown). Specifically, the metal shielding cage can be enclosed around the base 1.

[0041] The first terminal assembly 20 includes a plurality of first terminal pieces 2, a first insulating member 31 fixed to the plurality of first terminal pieces 2, a second insulating member 32, a first grounding piece 41, a second grounding piece 42, and a first path piece 43. The plurality of first terminal pieces 2 are arranged in a row along a left-right direction. Each first terminal piece 2 has a first terminal intermediate section 21, a first terminal contact section 22 connected to one end of the first terminal intermediate section 21, and a first terminal mating section 23 connected to the other end of the first terminal intermediate section 21. The first terminal contact section 22 protrudes into the mating cavity 101. The first insulating member 31 is integrally injection molded and fixed to one end of the plurality of first terminal intermediate sections 21; the second insulating member 32 is integrally injection molded and fixed to the other end of the plurality of first terminal intermediate sections 21.

[0042] Please refer to the reference. Figures 6 to 12 As shown, the first grounding piece 41 is integrally fixed to the first insulating member 31. The first grounding piece 41 includes a first shielding piece 411 located on one side of one end of a plurality of first terminal intermediate sections 21 and a plurality of first grounding contact sections 412 extending from the first shielding piece 411. The plurality of first grounding contact sections 412 are interspersed among the plurality of first terminal contact sections 22 (for example, the first grounding contact sections 412 can be interspersed on both sides of any adjacent pair of first terminal contact sections 22 transmitting high-speed differential signals). In a preferred embodiment, the first grounding piece 41 is integrally fixed to the first insulating member 31 by means of a first auxiliary insulating member 401 and integral injection molding. In a more preferred embodiment, a plurality of first fixing holes 402 are formed through the first insulating member 31 and the first shielding piece 411, and the first auxiliary insulating member 401 includes a portion extending into the first fixing holes 402, thereby ultimately achieving stable fixation between the first insulating member 31 and the first auxiliary insulating member 401, the first grounding piece 41, the plurality of first terminal intermediate sections 21 and the first shielding piece 411.

[0043] Furthermore, the second grounding piece 42 is integrally fixed with the second insulating member 32. The second grounding piece 42 includes a second shielding piece 421 located on one side of the other end of the plurality of first terminal intermediate sections 21 and a plurality of second grounding mating sections 422 extending from the second shielding piece 421. The plurality of second grounding mating sections 422 are interspersed among the plurality of first terminal mating sections 23 (for example, first grounding contact sections 412 can be interspersed on both sides of any adjacent pair of first terminal mating sections 23 transmitting high-speed differential signals). In a preferred embodiment, the second grounding piece 42 is integrally fixed with the second insulating member 32 by means of a second auxiliary insulating member 403 and integral injection molding. In a more preferred embodiment, a plurality of second fixing holes 404 are also formed through the second insulating member 32 and the second shielding piece 421, and the first auxiliary insulating member 403 includes a portion extending into the second fixing holes 404, ultimately achieving stable fixation between the second insulating member 32 and the second auxiliary insulating member 403 and the aforementioned second grounding piece 42, the plurality of first terminal intermediate sections 21 and the second shielding piece 421.

[0044] Of course, to ensure better shielding and achieve better impedance continuity and crosstalk optimization, the first fixing hole 402 and the second fixing hole 404 are designed to be as few as possible, and only elongated hole structures are selected if possible. The extension direction of the elongated hole is preferably along the extension path direction of the corresponding first terminal piece 2 (preferably parallel). In this embodiment, the first fixing hole 402 and the second fixing hole 404 are located between two adjacent first terminal pieces 2 in the left-right direction.

[0045] Of course, in some alternative embodiments, the first auxiliary insulating member 401 and the first insulating member 31 can be the same, that is, formed by a single injection molding. In this case, the injection molding positioning requirements between the first grounding piece 41, the intermediate sections 21 of the multiple first terminals, and the first shielding piece 411 are more stringent. In this application, designing the first auxiliary insulating member 401 and the first insulating member 31 to be formed by two injection moldings simplifies the manufacturing process. Similarly, the second auxiliary insulating member 403 and the second insulating member 32 are also formed in this way.

[0046] Furthermore, in this application, the first path piece 43 is a finished metal plate, preferably without any through-hole structures. Specifically, one edge of the first path piece 43 is electrically connected to the first shielding plate 411, and the other edge is electrically connected to the second shielding plate 421. In a preferred embodiment, the first path piece 43 and the first shielding plate 411 are fixed by welding without embedding the first insulating member 31; the first path piece 43 and the second shielding plate 421 are fixed by welding without embedding the second insulating member 32.

[0047] In a preferred embodiment, the first shielding plate 411, the second shielding plate 421, and the first path plate 43 all extend across the full width of the plurality of first terminal intermediate segments 21 arranged in the left-right direction. In a preferred embodiment, the first shielding plate 411, the second shielding plate 421, and the first path plate 43 extend across the entire length path of any one of the first terminal intermediate segments 21. In a preferred embodiment, the thickness of the first path plate 43 is less than the thickness of the first grounding plate 41 and less than the thickness of the second grounding plate 42.

[0048] In a preferred embodiment, the first path piece 43 overlaps the surface of the first shielding sheet 411 on the side away from the first terminal member 2 along the thickness direction, forming a first path piece overlap portion 431. The first path piece 43 is bent towards the first terminal member 2 near the first path piece overlap portion 431, forming a first path piece bend portion 432. The first path piece 43 overlaps the surface of the second shielding sheet 421 on the side away from the first terminal member 2 along the thickness direction, forming a second path piece overlap portion 433. The first path piece 43 is bent towards the first terminal member 2 near the second path piece overlap portion 432, forming a second path piece bend portion 434. The remaining portions of the first path piece 43, excluding the first path piece overlap portion 431, the first path piece bend portion 432, the second path piece overlap portion 433, and the second path piece bend portion 434, are closer to the first terminal member 2 than the first path piece overlap portion 431 and the second path piece overlap portion 433.

[0049] In a preferred embodiment, the surface of the first shielding sheet 411 adjacent to the plurality of first terminal pieces 2 has an equal spacing A1 with the plurality of first terminal pieces 2; the surface of the second shielding sheet 421 adjacent to the plurality of first terminal pieces 2 has an equal spacing A2 with the plurality of first terminal pieces 2; the surface of the first path piece 43, excluding the first path piece overlap portion 431, the first path piece bend portion 432, the second path piece overlap portion 433, and the second path piece bend portion 434, adjacent to the plurality of first terminal pieces 2 has an equal spacing A3 with the plurality of first terminal pieces 2; preferably, the spacing A1 is equal to the spacing A2 and equal to the spacing A3. The equality and equality described herein allow for the existence of necessary tolerance values. This design optimizes impedance continuity (meaning that the characteristic impedance of a high-speed differential signal remains as constant as possible in the transmission path, avoiding abrupt changes to ensure signal integrity).

[0050] In the low crosstalk common ground connector of this application, firstly, by separately setting the first grounding piece 41, the second grounding piece 42, and the first path piece 43, it is beneficial to position them during integral injection molding. If the first grounding piece 41, the second grounding piece 42, and the first path piece 43 are designed as a single piece, it is difficult to position such a large-area metal sheet when it is fixed together with multiple first terminal pieces 2 through integral injection molding. In particular, for first terminal pieces 2 located in the middle of the large-area metal sheet, to achieve a relatively stable and reliable integral injection molding fixation, it is necessary to make holes in the large-area metal sheet and insert positioning pins / mold cores into the holes to position the specific positions of the multiple first terminal pieces 2 and the specific positions of the large-area metal sheet. This is not conducive to the shielding function of the large-area metal sheet, and also increases the complexity of the mold layout and the difficulty of the manufacturing process. In addition, it is not conducive to reducing crosstalk. Secondly, as is well known, it is generally more difficult to control the flatness of large-area metal sheets, especially when large-area metal sheets need to be reprocessed (such as injection molding in this application). In the solution of this application, the first grounding piece 41, the second grounding piece 42 and the first path piece 43 are designed as single pieces, which is conducive to controlling the gap balance (or spacing balance) between them and each first terminal piece 2. This can optimize impedance continuity and is also very beneficial to reducing crosstalk. Thirdly, in this application, since the first grounding piece 41, the second grounding piece 42, and the first path piece 43 are single-piece designs, in order to obtain better impedance continuity and crosstalk optimization, the first path piece 43 is welded and attached to the surface of the first shielding piece 411 and the second shielding piece 421 away from the first terminal piece 2. Furthermore, the first path piece 43 is bent (at the positions of the first path piece bending portion 432 and the second path piece bending portion 434) to ensure, as far as possible, the gaps between the first shielding piece 411, the second shielding piece 421, and the first path piece 43 and each of the first terminal pieces 2 are balanced (or, as described above, to ensure that the spacing A1 is equal to the spacing A2 and equal to the spacing A3). In addition, the design that the thickness of the first path piece 43 is less than the thickness of the first grounding piece 41 and less than the thickness of the second grounding piece 42 is also to improve the above-mentioned technical effects and further reduce processing and manufacturing difficulties.

[0051] Furthermore, in this application, no grounding terminal is provided in the plurality of first terminal components 2. That is to say, the grounding terminal in the traditional sense is eliminated in the plurality of first terminal components 2. This can increase the spacing between the differential signal terminal pairs in the first terminal component 2 (that is, the terminals in the first terminal component 2 used for transmitting signals, especially the terminals for transmitting high-speed differential signals) in the left and right direction. The purpose is also to obtain better impedance continuity and crosstalk optimization effect.

[0052] Please refer to the reference. Figures 7 to 12As shown, the low crosstalk common ground connector of this application further includes a first lap piece 44. The first lap piece 44 forms a plurality of first lap portions 441 and a first arched portion 442 integrally connecting two adjacent first lap portions 441. Each first lap portion 441 is electrically contacted with a second grounding mating section 422. The first arched portion 442 extends over the first terminal mating section 23 (usually a differential signal terminal pair in the first terminal piece 2, or other necessary terminals in the first terminal piece 2) between two adjacent second grounding mating sections 422 and does not contact the first terminal mating section 23. A first extending tongue 443 extends along the length direction of the first terminal mating section 23 corresponding to the first arched portion 442. The first extending tongue 443 is suspended on one side of the plate thickness direction at the corresponding position of the first terminal mating section 23. The shielding function of the first terminal mating section 23 exposed outside the second insulating member 32 is achieved by the first lap piece 44, thereby obtaining better impedance continuity and crosstalk optimization. In a preferred embodiment of this application, the first lap piece 44, the first shielding piece 411, the second shielding piece 421, and the first path piece 43 are located on the same side of the plurality of first terminal members 2.

[0053] Please refer to the reference. Figures 6 to 12 As shown, the overall structure of the second terminal assembly 50 is basically the same as that of the first terminal assembly 20. Specifically, the second terminal assembly 50 includes a plurality of second terminal pieces 5, a third insulating member 61, a fourth insulating member 62, a third grounding piece 71, a fourth grounding piece 72, and a second path piece 73, all integrally fixed with the plurality of second terminal pieces 5. The plurality of second terminal pieces 5 are arranged in a row along the left-right direction. Each second terminal piece 5 has a second terminal intermediate section 51, a second terminal contact section 52 connected to one end of the second terminal intermediate section 51, and a second terminal mating section 53 connected to the other end of the second terminal intermediate section 51. The second terminal contact section 52 protrudes into the mating cavity 101. The second terminal contact section 52 and the first terminal contact section 22 are located on opposite sides of the mating cavity 101.

[0054] The third insulating member 61 is integrally injection molded to one end of the intermediate sections 51 of the plurality of second terminals. The fourth insulating member 62 is fixed to the other end of the intermediate sections 51 of the plurality of second terminals. Similar to the structure of the first terminal assembly 20, the second terminal assembly 50 is also provided with a third auxiliary insulating member 501 (corresponding to the first auxiliary insulating member 401 in structure and function), a third fixing hole 502 (corresponding to the first fixing hole 402 in structure and function), a fourth auxiliary insulating member 503 (corresponding to the second auxiliary insulating member 403 in structure and function), and a fourth fixing hole 504 (corresponding to the second fixing hole 404 in structure and function). The specific mating relationships and functions are not described in detail here; please refer to the detailed description of the first terminal assembly 20 above.

[0055] Furthermore, similarly, the third grounding plate 71 is fixed to the third insulating member 61, including a third shielding plate 711 located on one side of one end of the plurality of second terminal intermediate sections 51 and a plurality of third grounding contact sections 712 extending from the third shielding plate 711, the plurality of third grounding contact sections 712 being interspersed among the plurality of second terminal contact sections 52. The fourth grounding plate 72 is fixed to the fourth insulating member 62, including a fourth shielding plate 721 located on one side of the other end of the plurality of second terminal intermediate sections 51 and a plurality of fourth grounding mating sections 722 extending from the fourth shielding plate 721. The plurality of fourth grounding mating sections 722 being interspersed among the plurality of second terminal mating sections 53.

[0056] Furthermore, one edge of the second path piece 73 is electrically connected to the third shielding piece 711, and the other edge is electrically connected to the fourth shielding piece 721. The first shielding piece 411, the second shielding piece 421, and the first path piece 43 are located on the side of the plurality of first terminal pieces 2 near the second terminal pieces 5. The third shielding piece 711, the fourth shielding piece 721, and the second path piece 73 are located on the side of the plurality of second terminal pieces 5 near the first terminal pieces 2.

[0057] Similarly, similar to the structure of the first terminal assembly 20, the second terminal assembly 50 also includes a second lap piece 74. The second lap piece 74 has a plurality of second lap portions 741 and a second arched portion 742 integrally connecting two adjacent second lap portions 741. Each second lap portion 741 is in electrical contact with a fourth grounding docking segment 722. The second arched portion 742 extends over the second terminal docking segment 53 (typically a differential signal terminal pair in the second terminal member 5, but could also be other necessary terminals in the second terminal member 5) between corresponding adjacent two fourth grounding docking segments 722 and does not contact the second terminal docking segment 53. A second extending tongue 743 extends along the length direction of the second terminal docking segment 53 corresponding to the second arched portion 742. The second extending tongue 743 hangs on one side of the plate thickness direction at the corresponding position of the second terminal docking segment 53. The second lap piece 74 is located on the side of the plurality of second terminal members 5 closest to the first terminal member 2.

[0058] Further, the third shielding plate 711, the fourth shielding plate 721, and the second path plate 73 all extend across the full width of the plurality of second terminal intermediate segments 51 arranged in the left-right direction. The third shielding plate 711, the fourth shielding plate 721, and the second path plate 73 extend across the entire length path of any one of the second terminal intermediate segments 51. Further, the thickness of the second path plate 73 is less than the thickness of the third grounding plate 71 and less than the thickness of the fourth grounding plate 72. Further, the second path plate 73 is welded to the third shielding plate 711 and no third insulating member 61 is embedded therein. The second path plate 73 is welded to the fourth shielding plate 721 and no fourth insulating member 62 is embedded therein. Further, the second path plate 73 overlaps the surface of the third shielding plate 711 on the side away from the second terminal member 5 along the thickness direction, forming a third path plate overlap portion 731. The second path plate 73 is bent towards the side closer to the second terminal member 5 near the third path plate overlap portion 731, forming a third path plate bend portion 732. The second path piece 73 overlaps with the fourth shielding piece 721 on the side surface away from the second terminal piece 5 along the thickness direction to form a fourth path piece overlap portion 733. The second path piece 73 is bent towards the side closer to the second terminal piece 5 at a position near the fourth path piece overlap portion 733 to form a fourth path piece bend portion 734.

[0059] Furthermore, the other parts of the second path piece 73, excluding the third path piece overlap portion 731, the third path piece bend portion 732, the fourth path piece overlap portion 733, and the fourth path piece bend portion 734, are closer to the second terminal piece 5 than the third path piece overlap portion 731 and the fourth path piece overlap portion 733.

[0060] For details on the functions and effects of the second terminal assembly 50, please refer to the detailed description of the first terminal assembly 20 above; they will not be repeated here.

[0061] The following describes a method for manufacturing the low crosstalk common ground connector of this application, which includes at least the following steps: S1. Prepare a plurality of first terminal pieces 2, and form a first insulating element 31 and a second insulating element 32 on the plurality of first terminal pieces 2 by one injection molding; prepare a plurality of second terminal pieces 5, and form a third insulating element 61 and a fourth insulating element 62 on the plurality of second terminal pieces 5 by one injection molding.

[0062] S2. Prepare a first grounding piece 41 and a second grounding piece 42, and fix the first grounding piece 41 and the second grounding piece 42 to the first insulating member 31 and the second insulating member 32 respectively through one injection molding to form a semi-finished first terminal assembly 20; prepare a third grounding piece 71 and a fourth grounding piece 72, and fix the third grounding piece 71 and the fourth grounding piece 72 to the third insulating member 61 and the fourth insulating member 62 respectively through one injection molding to form a semi-finished second terminal assembly 50.

[0063] S3. The first terminal assembly 20 of the semi-finished product obtained in step S2 is bent, specifically at the middle position of the middle section 21 of the first terminal; the second terminal assembly 50 of the semi-finished product obtained in step S2 is bent, specifically at the middle position of the middle section 51 of the second terminal.

[0064] S4. Prepare a first path piece 43, and weld and fix the first path piece 43 to the first grounding piece 41 and the second grounding piece 42 of the first terminal assembly 20 obtained in step S3; prepare a second path piece 73, and weld and fix the second path piece 73 to the third grounding piece 71 and the fourth grounding piece 72 of the second terminal assembly 50 obtained in step S3. Before performing step S4 or step S3, the following operations are performed: preparing a first overlapping piece 44 and welding the first overlapping piece 44 to a plurality of second grounding connection segments 422; preparing a second overlapping piece 74 and welding the second overlapping piece 74 to a plurality of fourth grounding connection segments 722.

[0065] S5. Prepare base 1, assemble the second terminal assembly 50 obtained in step S4 into base 1; assemble the first terminal assembly 20 obtained in step S4 into base 1.

[0066] Alternatively, step S5 can be replaced by the following: prepare base 1, and stack the second terminal assembly 50 with the second path piece 73 obtained in step S4 and the first terminal assembly 20 with the first path piece 43 together and assemble them into base 1.

[0067] In some other implementations, if the low crosstalk ground connector only needs to be provided with one row of conductive terminals, it may also be possible to provide only one of the first terminal assembly 20 or the second terminal assembly 50.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0069] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low crosstalk common ground connector, characterized in that: Includes a base (1) and a terminal module (10) fixed in the base (1); The base (1) has a docking cavity (101) that opens towards the front end and a mounting cavity (102) that communicates with the docking cavity (101) and is located at the rear end of the base (1). The terminal module (10) is installed in the mounting cavity (102) and includes a first terminal assembly (20). The first terminal assembly (20) is provided with: Multiple first terminal pieces (2) are arranged in a row along the left and right direction. Each first terminal piece (2) has a first terminal middle section (21), a first terminal contact section (22) connected to one end of the first terminal middle section (21), and a first terminal mating section (23) connected to the other end of the first terminal middle section (21). The first terminal contact section (22) protrudes into the mating cavity (101). The first insulating element (31) is fixed to one end of the intermediate segment (21) of the plurality of first terminals; The second insulating member (32) is fixed to the other end of the intermediate section (21) of the plurality of first terminals; The first grounding piece (41) is fixed to the first insulating member (31) and includes a first shielding piece (411) located on one side of one end of the middle section (21) of the plurality of first terminals. The second grounding piece (42), fixed to the second insulating member (32), includes a second shielding piece (421) located on one side of the other end of the middle section (21) of the plurality of first terminals. The first path sheet (43) has one edge electrically connected to the first shielding sheet (411) and the other edge electrically connected to the second shielding sheet (421).

2. The low crosstalk common ground connector as described in claim 1, characterized in that: The first grounding plate (41) further includes a plurality of first grounding contact segments (412) extending from the first shielding plate (411), the plurality of first grounding contact segments (412) being interspersed among the plurality of first terminal contact segments (22); The second grounding plate (42) also includes a plurality of second grounding mating sections (422) extending from the second shielding plate (421), the plurality of second grounding mating sections (422) being interspersed among the plurality of first terminal mating sections (23).

3. The low crosstalk common ground connector as described in claim 1, characterized in that: The first shielding plate (411), the second shielding plate (421) and the first path plate (43) all extend across the full width of the middle sections (21) of the multiple first terminals arranged in the left and right directions.

4. The low crosstalk common ground connector as described in claim 1, characterized in that: The first shielding plate (411), the second shielding plate (421) and the first path plate (43) extend along the entire path of any one of the middle segments (21) of the first terminal.

5. The low crosstalk common ground connector as described in claim 1, characterized in that: The thickness of the first path piece (43) is less than the thickness of the first ground piece (41) and less than the thickness of the second ground piece (42).

6. The low crosstalk common ground connector as described in claim 1, 2, 3, 4, or 5, characterized in that: The first path piece (43) is welded and fixed to the first shielding piece (411) and the first insulating part (31) is not embedded therein. The first path piece (43) is welded and fixed to the second shielding piece (421) and the second insulating piece (32) is not embedded.

7. The low crosstalk common ground connector as described in claim 1, 2, 3, 4, or 5, characterized in that: The first path piece (43) overlaps on the side surface of the first shielding piece (411) away from the first terminal piece (2) along the thickness direction and forms a first path piece overlap portion (431). The first path piece (43) is bent towards the side closer to the first terminal piece (2) at a position close to the first path piece overlap portion (431) to form a first path piece bend portion (432). The first path piece (43) overlaps the second shielding piece (421) on the side surface away from the first terminal piece (2) along the thickness direction and forms the second path piece overlap portion (433). The first path piece (43) is bent towards the side closer to the first terminal piece (2) at a position close to the second path piece overlap portion (432) to form the second path piece bend portion (434). The other parts of the first path piece (43), except for the first path piece overlap (431), the first path piece bend (432), the second path piece overlap (433) and the second path piece bend (434), are closer to the first terminal piece (2) than the first path piece overlap (431) and the second path piece overlap (433).

8. The low crosstalk common ground connector as described in claim 1, 2, 3, 4, or 5, characterized in that, Also includes: The first lap piece (44) has a plurality of first lap portions (441) and a first arched portion (442) that integrally connects two adjacent first lap portions (441). Each first lap portion (441) is in electrical contact with a second grounding docking section (422). The first arched portion (442) crosses the first terminal docking section (23) between two adjacent second grounding docking sections (422) and does not contact the first terminal docking section (23). The first extended tongue (443) extends from the first arched portion (442) along the length direction of the first terminal mating section (23) corresponding to the first arched portion (442) and is suspended on one side of the thickness direction of the corresponding first terminal mating section (23).

9. The low crosstalk common ground connector as described in claim 8, characterized in that: The first overlapping piece (44), the first shielding piece (411), the second shielding piece (421) and the first path piece (43) are located on the same side of the plurality of first terminal pieces (2).

10. The low crosstalk common ground connector as described in claim 1, 2, 3, 4, or 5, characterized in that: The terminal module (10) further includes a second terminal assembly (50), which is stacked with the first terminal assembly (20) and installed in the mounting cavity (102). The second terminal assembly (50) includes: Multiple second terminal pieces (5) are arranged in a row along the left and right direction. Each second terminal piece (5) has a second terminal middle section (51), a second terminal contact section (52) connected to one end of the second terminal middle section (51), and a second terminal mating section (53) connected to the other end of the second terminal middle section (51). The second terminal contact section (52) protrudes into the mating cavity (101). The second terminal contact section (52) and the first terminal contact section (22) are located on opposite sides of the mating cavity (101). The third insulating member (61) is fixed to one end of the intermediate section (51) of the plurality of second terminals; The fourth insulating member (62) is fixed to the other end of the intermediate section (51) of the plurality of second terminals; The third grounding piece (71), fixed to the third insulating member (61), includes a third shielding piece (711) located on one side of one end of the intermediate section (51) of the plurality of second terminals. The fourth grounding piece (72), fixed to the fourth insulating member (62), includes a fourth shielding piece (721) located on one side of the other end of the middle section (51) of the plurality of second terminals. The second path plate (73) has one edge electrically connected to the third shielding plate (711) and the other edge electrically connected to the fourth shielding plate (721); The first shielding plate (411), the second shielding plate (421) and the first path plate (43) are located on the side of the plurality of first terminal pieces (2) closer to the second terminal piece (5); The third shielding plate (711), the fourth shielding plate (721) and the second path plate (73) are located on the side of the plurality of second terminal pieces (5) closer to the first terminal piece (2).

11. The low crosstalk common ground connector as described in claim 10, characterized in that: The third grounding plate (71) also includes a plurality of third grounding contact segments (712) extending from the third shielding plate (711), the plurality of third grounding contact segments (712) being interspersed among the plurality of second terminal contact segments (52); The fourth grounding plate (72) also includes a plurality of fourth grounding docking segments (722) extending from the fourth shielding plate (721), the plurality of fourth grounding docking segments (722) being interspersed among a plurality of second terminal docking segments (53).

12. The low crosstalk common ground connector as described in claim 11, characterized in that, Also includes: The second lap piece (74) has a plurality of second lap portions (741) and a second arched portion (742) that integrally connects two adjacent second lap portions (741). Each second lap portion (741) is in electrical contact with the fourth grounding docking section (722). The second arched portion (742) crosses the second terminal docking section (53) between the corresponding two adjacent fourth grounding docking sections (722) and does not contact the second terminal docking section (53). The second extended tongue (743) extends from the second arched portion (742) along the length direction of the second terminal mating section (53) corresponding to the second arched portion (742) and is suspended on one side of the plate thickness direction of the second terminal mating section (53). The second lap piece (74) is located on the side of the plurality of second terminal pieces (5) near the first terminal piece (2).

13. The low crosstalk common ground connector as described in claim 10, characterized in that: The third shielding plate (711), the fourth shielding plate (721) and the second path plate (73) all extend across the full width of the multiple second terminal middle sections (51) arranged in the left and right directions; The third shielding plate (711), the fourth shielding plate (721) and the second path plate (73) extend along the entire path of any of the intermediate segments (51) of the second terminal in the length direction.

14. The low crosstalk common ground connector as described in claim 10, characterized in that: The thickness of the second path piece (73) is less than the thickness of the third ground piece (71) and less than the thickness of the fourth ground piece (72).

15. The low crosstalk common ground connector as described in claim 10, characterized in that: The second path piece (73) is welded and fixed to the third shielding piece (711) and the third insulating part (61) is not embedded. The second path piece (73) is welded and fixed to the fourth shielding piece (721) and the fourth insulating piece (62) is not embedded.

16. The low crosstalk common ground connector as described in claim 10, characterized in that: The second path piece (73) overlaps the third shielding piece (711) on the side surface away from the second terminal piece (5) along the thickness direction and forms the third path piece overlap portion (731). The second path piece (73) is bent towards the side closer to the second terminal piece (5) at a position close to the third path piece overlap portion (731) to form the third path piece bend portion (732). The second path piece (73) overlaps the fourth shielding piece (721) on the side surface away from the second terminal piece (5) along the thickness direction and forms the fourth path piece overlap portion (733). The second path piece (73) is bent towards the side near the second terminal piece (5) at a position close to the fourth path piece overlap portion (733) to form the fourth path piece bend portion (734). The second path piece (73), except for the third path piece overlap (731), the third path piece bend (732), the fourth path piece overlap (733) and the fourth path piece bend (734), is closer to the second terminal piece (5) than the third path piece overlap (731) and the fourth path piece overlap (733).

17. A method for manufacturing a low crosstalk common ground connector as described in any one of claims 1 to 9, characterized in that, It should include at least the following steps: S1. Prepare multiple first terminal pieces (2), and form a first insulating member (31) and a second insulating member (32) on the multiple first terminal pieces (2) by one injection molding. S2. Prepare the first grounding piece (41) and the second grounding piece (42), and fix the first grounding piece (41) and the second grounding piece (42) to the first insulating member (31) and the second insulating member (32) respectively by injection molding to form the first terminal assembly (20) of the semi-finished product. S3. The first terminal assembly (20) of the semi-finished product obtained in step S2 is bent, and the specific bending position is the middle position of the middle section (21) of the first terminal. S4. Prepare the first path piece (43), and weld and fix the first path piece (43) to the first grounding piece (41) and the second grounding piece (42) of the first terminal assembly (20) obtained in step S3; S5. Prepare the base (1) and assemble the first terminal assembly (20) obtained in step S4 into the base (1).

18. A method for manufacturing a low crosstalk common ground connector as described in claim 17, characterized in that, The following operations are also included when performing step S4 or before performing step S3: Prepare the first lap joint (44) and weld the first lap joint (44) to multiple second grounding docking sections (422) for fixation.

19. A method for manufacturing a low crosstalk common ground connector as described in any one of claims 10 to 16, characterized in that, It should include at least the following steps: S1. Prepare multiple first terminal pieces (2), and form a first insulating member (31) and a second insulating member (32) on the multiple first terminal pieces (2) by one injection molding; prepare multiple second terminal pieces (5), and form a third insulating member (61) and a fourth insulating member (62) on the multiple second terminal pieces (5) by one injection molding. S2. Prepare a first grounding piece (41) and a second grounding piece (42). Through one injection molding process, fix the first grounding piece (41) and the second grounding piece (42) to the first insulating component (31) and the second insulating component (32) respectively to form a semi-finished first terminal assembly (20); prepare a third grounding piece (71) and a fourth grounding piece (72). Through one injection molding process, fix the third grounding piece (71) and the fourth grounding piece (72) to the third insulating component (61) and the fourth insulating component (62) respectively to form a semi-finished second terminal assembly (50). S3. The first terminal assembly (20) of the semi-finished product obtained in step S2 is bent, and the specific bending position is the middle position of the middle section (21) of the first terminal; the second terminal assembly (50) of the semi-finished product obtained in step S2 is bent, and the specific bending position is the middle position of the middle section (51) of the second terminal. S4. Prepare a first path piece (43), and weld the first path piece (43) to the first grounding piece (41) and the second grounding piece (42) of the first terminal assembly (20) obtained in step S3; prepare a second path piece (73), and weld the second path piece (73) to the third grounding piece (71) and the fourth grounding piece (72) of the second terminal assembly (50) obtained in step S3; S5. Prepare the base (1), assemble the second terminal assembly (50) obtained in step S4 into the base (1); assemble the first terminal assembly (20) obtained in step S4 into the base (1); Alternatively, step S5 can be performed by: preparing a base (1), stacking the second terminal assembly (50) obtained in step S4 with the first terminal assembly (20) and assembling them into the base (1) simultaneously.

20. A method for manufacturing a low crosstalk common ground connector as described in claim 19, characterized in that, The following operations are also included when performing step S4 or before performing step S3: Prepare a first lap joint (44) and weld the first lap joint (44) to a plurality of second grounding connection segments (422); prepare a second lap joint (74) and weld the second lap joint (74) to a plurality of fourth grounding connection segments (722).

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