Electric connector

Abstract

The utility model provides an electric connector, which comprises an insulating seat body, a conductive terminal group and an impedance matching element, the conductive terminal group accommodated in the insulating seat body comprises two groups of a plurality of signal terminals and a plurality of grounding terminals which are correspondingly arranged, each two adjacent signal terminals is provided with a base for in-mold injection, and the impedance matching element is arranged on the base. The grounding terminals are provided with bridging parts covering the base at intervals, the impedance matching element is arranged between the two adjacent conductive terminal groups and comprises conductive plastic and a plurality of grounding sheets arranged on the two surfaces of the conductive plastic, and the grounding terminals and the grounding sheets are electrically contacted to form common grounding. Therefore, noise of adjacent signal terminal pairs is shielded, crosstalk interference between signal pairs in the same row is improved, and high-frequency performance is further optimized.

Description

Technical Field

[0001] This utility model relates to an electrical connector, and more particularly to an electrical connector in which a bridging portion of a grounding terminal covers a base that is injection molded within a signal terminal mold, and the grounding terminal and the grounding plate are electrically in contact to form a common ground, thereby shielding noise from adjacent signal terminal signal pairs, improving crosstalk interference between signal pairs in the same row, and thus optimizing high-frequency performance. Background Technology

[0002] To maintain optimal electrical characteristics when cables are coupled to electronic devices, it is necessary to avoid system impedance discontinuities in order to maintain a fixed impedance. Setting up an electrical connector between the cable and the electronic device will create discontinuities in impedance at the connection point, which will further lead to insertion loss, which reduces signal strength, and return loss, which causes the signal to be reflected back to the signal source.

[0003] As mentioned above, insertion loss is related to cable length and the number of connection points; the longer the cable or the more connection points, the greater the loss. Reflection loss, on the other hand, refers to the energy reflected back to the signal source during signal transmission within a conductor due to impedance mismatch or discontinuity. These parameters have a significant impact on the transmission speed, integrity, and reliability of high-frequency signals.

[0004] Furthermore, in high-frequency characteristics, near-end crosstalk (NEXT) and far-end crosstalk (FEXT) are two common problems. Near-end crosstalk refers to interference signals coupling onto adjacent cables near the signal source, affecting signal integrity. Far-end crosstalk refers to interference signals coupling onto adjacent cables near the signal receiver, causing signal distortion. The impact of far-end crosstalk is generally greater than that of near-end crosstalk because its cumulative interference signal energy increases with cable length.

[0005] Furthermore, electronic products commonly use Peripheral Component Interconnect Express (PCIe) buses as interfaces for high-speed signal transmission. Among them, Mini Cool Edge 0 (MCIO) has become the mainstream specification in the market. With the advancement of technology, it has evolved from PCIe Gen4 to PCIe Gen6 and the latest specification PCIe Gen7. The speed of the MCIO interface has also increased with the demand. In addition to miniaturization, MCIO interface connectors also need to have excellent high-speed signal transmission stability. However, in the past, high-speed connectors were usually produced by continuously stamping terminals and using in-mold injection molding in order to control the geometric dimensions of impedance and meet mass production requirements due to the small terminal spacing. However, with the increase in bandwidth, the requirements for crosstalk interference in the high-frequency characteristics of products have become more stringent. This production method has an inherent disadvantage in terms of far-end crosstalk interference between terminals in the same row. Therefore, this project will improve the insertion loss and crosstalk and other high-frequency characteristics of the product by changing the terminal stamping and assembly method and combining impedance components. Utility Model Content

[0006] Therefore, in view of the above-mentioned problems and deficiencies, the main objective of this utility model is to provide an electrical connector.

[0007] This utility model provides an electrical connector, characterized in that it includes:

[0008] An insulating base having a mating space and a receiving space; and

[0009] The conductive terminal group housed in the insulating base includes two sets of correspondingly arranged multiple signal terminals and multiple ground terminals. Each pair of adjacent signal terminals is provided with a base and a bridging portion covering the ground terminal on the base, and the ground terminal is provided on the outer side of each pair of signal terminals with the base.

[0010] The electrical connector wherein each of the conductive terminal groups is arranged alternately with respect to the signal terminal and the ground terminal.

[0011] The electrical connector, wherein: the plurality of signal terminals of the conductive terminal group have a mating portion inserted into the mating space of the insulating base and a soldering portion located on one side of the mating portion.

[0012] The electrical connector, wherein: the plurality of grounding terminals of the conductive terminal group have a mating portion inserted into the mating space of the insulating base and a soldering portion located on one side of the mating portion.

[0013] The electrical connector wherein the bridging portion of the plurality of ground terminals of the conductive terminal group covers the base at intervals.

[0014] The electrical connector wherein: the conductive terminal group is disposed within the receiving space of the insulating base, and the insulating base is provided with a terminal slot for positioning the conductive terminal group.

[0015] The electrical connector, wherein: an impedance matching element is provided between the two conductive terminal groups in the insulating housing, and the impedance matching element includes a conductive plastic and a plurality of grounding plates that are electrically contacted with the plurality of grounding terminals to form a common ground and are disposed on the two surfaces of the conductive plastic.

[0016] The electrical connector, wherein: the base of the conductive terminal group is provided with a positioning part, and the conductive plastic is provided with a positioning groove that mates with the positioning part.

[0017] The electrical connector wherein the grounding plate of the impedance matching element is provided with a plurality of through holes through which the positioning portion penetrates to engage with the positioning groove.

[0018] This utility model provides an electrical connector in which each of the two adjacent signal terminals is provided with a base made of insulating material. The grounding terminal has a bridging portion that covers the base at intervals, and each pair of signal terminals and grounding terminals are arranged in an alternating manner, so that each pair of signal terminals on the base has a grounding terminal on its outer side, and the grounding terminal is electrically in contact with the grounding plate to form a common ground. The base made of insulating material prevents short circuits between the bridging portion of the grounding terminal and the base. This structural design can also increase the effect of shielding other noise interference, that is, it can shield the noise of adjacent signal terminal pairs, improve crosstalk interference between signal terminal pairs in the same row, and thus optimize high-frequency performance.

[0019] In one embodiment of this utility model, a positioning part is provided on the base. The positioning part penetrates a plurality of through holes on the grounding plate and cooperates with the positioning groove to form a positioning function. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the electrical connector of this utility model.

[0021] Figure 2 This is a three-dimensional view of the electrical connector of this utility model from another perspective.

[0022] Figure 3 This is an exploded perspective view of the electrical connector of this utility model.

[0023] Figure 4 This is an exploded perspective view of the electrical connector of this utility model.

[0024] Figure 5This is a cross-sectional view (a-a') of the electrical connector of this utility model.

[0025] Figure 6 This is a cross-sectional view of the electrical connector of this utility model, shown in section b-b'.

[0026] Figure 7 This is a side sectional view of the electrical connector of this utility model.

[0027] Figure 8 This is a cross-sectional view of the electrical connector of this utility model from another side.

[0028] Figure 9 This is a partial exploded perspective view of the electrical connector of this utility model.

[0029] Figure 10 This is a partial exploded perspective view of the electrical connector of this utility model.

[0030] Explanation of reference numerals in the attached drawings: 1-Insulating base; 10-Accommodation space; 11-Mating space; 12-Terminal slot; 2-Conductive terminal group; 21-Signal terminal; 211-Base; 2111-Positioning part; 212-Mating part; 213-Welding part; 22-Grounding terminal; 221-Bridging part; 222-Mating part; 223-Welding part; 3-Impedance matching element; 31-Conductive plastic; 310-Positioning slot; 32-Grounding piece; 320-Through hole. Detailed Implementation

[0031] To achieve the above objectives and effects, the technical means and structure adopted by this utility model are described in detail below with reference to the accompanying drawings, which will help to fully understand the features and functions of the preferred embodiments of this utility model.

[0032] Please see Figures 1 to 10 The figures shown are, respectively, a three-dimensional appearance view, a three-dimensional appearance view from another perspective, an exploded three-dimensional view, an exploded three-dimensional view from another perspective, a cross-sectional view along line a-a', a cross-sectional view along line b-b', a side view, another side view, a partial exploded three-dimensional view, and a partial exploded three-dimensional view from another perspective of the electrical connector of this utility model. As can be clearly seen from the figures, this utility model provides an electrical connector, including an insulating base 1, two conductive terminal groups 2, and an impedance matching element 3.

[0033] The insulating base 1 has a receiving space 10, a docking space 11, and a terminal slot 12 for inserting the conductive terminal group 2. Two conductive terminal groups 2 are arranged on both sides of the insulating base 1, including two sets of correspondingly arranged multiple signal terminals 21 and multiple ground terminals 22. Each adjacent two signal terminals 21 are provided with a base 211 made of insulating material. The base 211 is provided with a positioning part 2111. The docking part 212 of the multiple signal terminals 21 is inserted into the insulating base 1 and located in the docking space 11. The other end of the docking part 212 is provided with a welding part 213. The ground terminal 22 is provided with a bridging part 221 that covers the base 211 at intervals. The docking part 222 of the multiple ground terminals 22 is inserted into the insulating base 1 and located in the docking space 11. The other end of the multiple ground terminals 22 of the conductive terminal group 2 is provided with a welding part 223.

[0034] The impedance matching element 3 installed between the two adjacent conductive terminal groups 2 includes a conductive plastic 31. The conductive plastic 31 is provided with a positioning groove 310 that cooperates with the positioning part 2111, and a plurality of grounding pieces 32 that are electrically in contact with the grounding terminals 22 and are provided on the two surfaces of the conductive plastic 31. The grounding pieces 32 are provided with a plurality of through holes 320 for the positioning part 2111 to pass through.

[0035] The signal terminals 21 of the two adjacent conductive terminal groups 2 are each provided with a base 211 formed by in-mold molding.

[0036] Please see Figure 3 , Figure 4 , Figure 9 and Figure 10 The figures shown are an exploded perspective view, an exploded perspective view from another angle, a partial exploded perspective view, and a partial exploded perspective view from another angle, respectively, of the present invention. Each pair of grounding terminals 22 is provided with an electrical bridging portion 221. These bridging portions 221 of the grounding terminals 22 cover the base 211 at intervals, and each pair of signal terminals 21 and grounding terminals 22 are arranged in an alternating pattern, so that each of the two signal terminals 21 on the base 211 has a grounding terminal 22 on its outer side. The base 211, made of insulating material, prevents short circuits between the bridging portions 221 of the grounding terminals 22 and the base 211. This structural design can solve the tolerance problems in the high-density structure resulting from connector miniaturization, improving the overall manufacturing yield and simplifying the structural design. It also increases the effect of shielding other noise interference, that is, it can shield noise from adjacent signal terminal pairs 21, improve crosstalk interference between signal terminal pairs in the same row, and thus optimize high-frequency performance.

[0037] Please see Figure 5 , Figure 6 , Figure 9 and Figure 10 The figures shown are a-a' cross-sectional view, b-b' cross-sectional view, partial exploded perspective view, and another perspective partial exploded perspective view of this utility model. An impedance matching element 3 is provided between two adjacent conductive terminal groups 2. The impedance matching element 3 includes conductive plastic 31 and a plurality of grounding plates 32 disposed on two surfaces of the conductive plastic 31. When the two conductive terminal groups 2 are assembled with the impedance matching element 3, the bridging portions 221 of the grounding terminals 22 cover the base 211 at intervals and make electrical contact with the grounding plates 32 to form a common ground. At the same time, the positioning portion 2111 of the base 211 penetrates the grounding plate 32 through the through hole 320. The grounding plate 32 contacts the two surfaces of the conductive plastic 31, and the positioning portion 2111 penetrating the through hole 320 is positioned in the positioning groove 310 of the conductive plastic 31.

[0038] As described above, the multi-point grounding path of this utility model utilizes the impedance matching element 3 electrically connected to the grounding terminals 22 of each of the two conductive terminal groups 2 to form a common grounding state. This effectively suppresses crosstalk interference, static electricity, and external electromagnetic waves generated by the signal terminals 21 of the conductive terminal group 2 during signal transmission, and transmits the signals to the grounding loop for release through the soldering parts 223 soldered on the circuit board.

[0039] Please see Figures 1 to 4 As shown, the conductive terminal group 2 and the impedance matching element 3 are combined as a whole. The mating part 212 and the mating part 222 of the conductive terminal group 2 are inserted into the mating space 11 of the insulating base 1. After insertion, the conductive terminal group 2 and the impedance matching element 3 are placed in the receiving space 10 of the insulating base 1. At this time, the conductive terminal group 2 will be positioned at the terminal slot 12 of the insulating base 1, and the mating part 212 and the mating part 222 of the conductive terminal group 2 are located at the mating space 11.

[0040] The insulating base 1 is mainly assembled and fixed with the aforementioned conductive terminal group 2 and impedance matching element 3 through a snap-fit ​​structure (such as a snap-fit ​​and a snap-slot). However, this is not a technical feature of this case and will not be described in detail.

[0041] The conductivity of the aforementioned conductive plastic 31 is lower than that of metallic conductors such as gold, silver, and copper. By adjusting the conductivity of the conductive plastic 31, impedance matching with the conductive terminal group 2 can be achieved, which can significantly reduce the overall return loss, insertion loss, near-end crosstalk (NEXT), and far-end crosstalk (FEXT) problems of the connector, resulting in better and more stable high-speed signal transmission characteristics. In addition to enhancing impedance matching, the combined structure of the impedance matching element 3 also has the functions of absorbing vibrations and instantaneous arcs generated when mating with interlocking connectors (such as board-end connectors), shielding electromagnetic interference (EMI), and forming a multi-point grounding loop with the multiple grounding terminals 22.

[0042] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Therefore, any simple modifications and equivalent structural changes made based on the description and drawings of the present utility model should also be included in the patent scope of the present utility model.

Claims

1. An electrical connector, characterized by, The application relates to an electrically conductive terminal set, which comprises: an insulating base body having a mating space and a receiving space; and a plurality of signal terminals and a plurality of ground terminals arranged correspondingly in two groups, each of two adjacent signal terminals is provided with a base and a bridging portion of the ground terminal covering the base, and the two signal terminals with the base have the ground terminal outside.

2. The electrical connector of claim 1, wherein: The signal terminals and the ground terminals of the electrically conductive terminal set are arranged in an interlaced manner.

3. The electrical connector of claim 1, wherein: The plurality of signal terminals of the electrically conductive terminal set has a mating portion arranged in the mating space of the insulating base body and a welding portion arranged on one side of the mating portion.

4. The electrical connector of claim 1, wherein: The plurality of ground terminals of the electrically conductive terminal set has a mating portion arranged in the mating space of the insulating base body and a welding portion arranged on one side of the mating portion.

5. The electrical connector of claim 1, wherein: The bridging portions of the plurality of ground terminals of the electrically conductive terminal set are arranged in a spaced manner on the base.

6. The electrical connector of claim 1, wherein: The electrically conductive terminal set is arranged in the receiving space of the insulating base body, and the insulating base body is provided with a terminal groove for positioning the electrically conductive terminal set.

7. The electrical connector of claim 1, wherein: Two electrically conductive terminal sets are arranged correspondingly on two sides of the insulating base body, and an impedance matching element is arranged between the two electrically conductive terminal sets in the insulating base body, wherein the impedance matching element comprises an electrically conductive plastic and a plurality of ground sheets electrically connected to the plurality of ground terminals to form a common ground and arranged on two surfaces of the electrically conductive plastic.

8. The electrical connector of claim 7, wherein: The base of the electrically conductive terminal set is provided with a positioning portion, and the electrically conductive plastic is provided with a positioning groove matched with the positioning portion.

9. The electrical connector of claim 8, wherein: The ground sheets of the impedance matching element are provided with a plurality of through holes for the positioning portion to penetrate and match with the positioning groove.

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