Electric connector

Abstract

The utility model provides an electric connector, which comprises an insulating seat body and two conductive terminal groups assembled in the insulating seat body, a plurality of signal terminals in the conductive terminal groups are all provided with bases made of insulating materials, and a plurality of grounding terminals are directly punched and formed by a connecting sheet. The butt joint parts of the plurality of grounding terminals are in a reverse folding mode, so that the suspended tail ends are in a relative bending state towards the direction of the butt joint space, the butt joint parts of the plurality of signal terminals are in a relative inclined extending state, and a wrapping rubber base is arranged at the position of the connecting piece. Therefore, the plurality of signal terminals and the plurality of grounding terminals are arranged in a non-coplanar shape, and noise of adjacent signal terminal pairs can be shielded and crosstalk interference between the signal terminals in the same row can be improved through the integral structure design.

Description

Technical Field

[0001] This utility model relates to an electrical connector, and more particularly to an electrical connector that improves crosstalk interference between signal pairs in the same row by using different designs of the shape and bending direction of the signal terminals and the ground terminals, thereby 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 often use Peripheral Component Interconnect Express (PCIe) buses as interfaces for high-speed signal transmission. Among them, Mini Cool Edge O (MCIO) has become the mainstream standard in the market. With the progress of technology, it has evolved from PCIe Gen4 to PCIe Gen6 and the latest standard PCIe Gen7. The speed of MCIO interface has also increased with the demand. In addition to miniaturization, MCIO interface electrical connectors also need to have excellent high-speed signal transmission stability. However, in the past, high-speed connectors were prone to interference because the terminals were on the same plane and the spacing between them was too small. Moreover, the effect of shielding crosstalk interference could not be optimized. In order to control the geometric size of impedance and meet the mass production requirements, continuous stamping of terminals and in-mold injection were usually used for production. However, with the increase of bandwidth, the requirements for crosstalk interference in the high-frequency characteristics of products are becoming more and more stringent. This structure has an inherent disadvantage in solving crosstalk interference between terminals in the same row, and it is something that those in this industry really need to improve. 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 formed therein; and

[0009] The conductive terminal assembly housed within the insulating base includes two sets of correspondingly arranged multiple signal terminals and multiple grounding terminals. Each of the multiple signal terminals has a base made of insulating material, and the base has mating and soldering portions on both sides. Each of the multiple grounding terminals has a connecting piece, and the connecting piece has mating and soldering portions on both sides. A rubber seat is provided at the location of the connecting piece. Both the base and the rubber seat of the multiple signal terminals and the multiple grounding terminals have mating and soldering portions on both sides. The mating portions of the multiple grounding terminals are bent in a reverse manner so that the suspended ends are relatively bent towards the mating space, while the mating portions of the multiple signal terminals are relatively obliquely extended.

[0010] The electrical connector wherein the base on the plurality of signal terminals is manufactured by in-mold injection molding.

[0011] The electrical connector wherein the rubber seat at the location of the connecting piece on the plurality of grounding terminals is manufactured by in-mold injection molding.

[0012] The electrical connector wherein: the base and the rubber seat are respectively provided with a positioning part and a locking part that fit together.

[0013] The electrical connector wherein each of the conductive terminal groups is arranged alternately with respect to the signal terminal and the ground terminal.

[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 the housing is made of insulating material or conductive plastic.

[0016] This utility model provides an electrical connector in which a plurality of signal terminals are provided with a base made of insulating material, and a plurality of ground terminals are directly stamped using a connecting piece. The mating portion of the plurality of ground terminals is bent in reverse so that the suspended ends are all bent relative to each other in the direction of the mating space, while the mating portion of the plurality of signal terminals is in a relatively oblique state. Even though the plurality of signal terminals and the plurality of ground terminals are arranged in a non-coplanar shape, not only can the large-area connecting piece shield and absorb various noise interferences during signal transmission between the plurality of signal terminals, but the bent mating portion of the plurality of ground terminals can also act as a shield to reduce signal interference. This structural design can also increase the effect of shielding other noise interference, that is, it can shield noise from adjacent signal terminal pairs, improve crosstalk interference between signal terminal pairs in the same row, and thus optimize high-frequency performance.

[0017] In one embodiment of this utility model, the plurality of grounding terminal bases are made of conductive plastic. The material properties of the conductive plastic base can significantly reduce the influence of various noise interferences, thereby achieving the purpose of suppressing high-frequency signal interference.

[0018] In one embodiment of this utility model, the base and the adhesive seat are respectively provided with a positioning part and a locking part that fit together. When the two are combined, the adhesive seat is pressed against the base to form a positioning state, so that the two conductive terminal groups can be placed into the accommodating space of the insulating seat to achieve a positioning, thereby achieving the purpose of easy assembly. Attached Figure Description

[0019] Figure 1 This is a perspective view of the electrical connector and plug connector of this utility model.

[0020] Figure 2 This is an exploded perspective view of the conductive terminal assembly of this utility model.

[0021] Figure 3 This is a three-dimensional appearance diagram of the conductive terminal assembly of this utility model.

[0022] Figure 4 This is a side sectional view of the electrical connector and plug connector of this utility model.

[0023] Figure 5 This is a cross-sectional view of the electrical connector and plug connector of this utility model from another side.

[0024] 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; 220-Connecting piece; 221-Glue base; 2211-Clamping part; 222-Mating part; 223-Welding part; 3-Plug connector; 31-Contact. Detailed Implementation

[0025] 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, so as to facilitate a complete understanding.

[0026] Please see Figures 1 to 5 As shown, the figures are respectively a three-dimensional appearance view of the electrical connector and plug connector of this utility model, a three-dimensional exploded view of the conductive terminal group, a three-dimensional appearance view of the conductive terminal group, a side sectional view of the electrical connector and plug connector, and another side sectional view of the electrical connector and plug connector. It can be clearly seen from the figures that this utility model provides an electrical connector, including an insulating base 1 and two conductive terminal groups 2.

[0027] The insulating base 1 has a receiving space 10, a mating space 11, and correspondingly positioned terminal slots 12 for inserting two conductive terminal groups 2. Two conductive terminal groups 2 are correspondingly 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 multiple signal terminal 21 is formed by in-mold injection molding of a base 211 made of insulating material, and each multiple signal terminal 21 has a mating portion 212 and a welding portion 213 formed on both sides of the base 211. The multiple ground terminals 22 are formed by directly stamping a connecting piece 220, so that each multiple ground terminal 22 has a mating portion 222 and a welding portion 223 formed on both sides of the connecting piece 220. The connection piece 220 is formed by in-mold injection molding. The connector has a base 221, and the base 211 and the base 221 are respectively provided with positioning parts 2111 and engaging parts 2211 that fit together. The plurality of grounding terminals 22 also have mating parts 222 and soldering parts 223 on both sides of the base 221. When the two are combined, the base 221 is in a positioning state by pressing against the base 211. The mating parts 212 and 222 of the plurality of signal terminals 21 and the plurality of grounding terminals 22 are separated by a safe distance from the soldering parts 213 and 223. This structural design can solve the tolerance problem of high-density construction after the miniaturization of the connector, improve the overall manufacturing yield and simplify the structural design. At the same time, it can also increase the effect of shielding other noise interference, that is, it can shield the noise of adjacent signal terminal 21 signal pairs, improve crosstalk interference between signal terminals 21 in the same row, and thus optimize high frequency performance.

[0028] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the mating portions 222 of the multiple grounding terminals 22 of the two sets of conductive terminal groups 2 are bent in reverse so that the suspended ends are all bent relative to each other towards the mating space 11, while the mating portions 212 of the multiple signal terminals 21 are in a relatively oblique state. Even though the multiple signal terminals 21 and the multiple grounding terminals 22 are arranged in a non-plane shape, and a mating space 11 for the plug connector 3 to be inserted is formed between the two sets of conductive terminal groups 2, so that when the plug connector 3 is mated, its multiple contacts 31 can be electrically connected with the conductive terminal group 2. In addition, since signal interference is not only horizontal but also multi-directional, this arrangement can also effectively reduce the probability of signal interference when the mating portions 212 of the adjacent multiple signal terminals 21 are transmitting at high frequency. Not only can the bent multiple grounding terminal 222 mating portions act as a shield, but the electrical connection paths of the mating portions 212 and 222 are transmitted in different directions, which can reduce the probability of signal interference.

[0029] In addition, each pair of signal terminals 21 is separated by a grounding terminal 22 to reduce crosstalk interference, noise, etc. Moreover, all grounding terminals 22 on the same side of the conductive terminal group 2 are set on a large-area connecting piece 220 to form a common ground, so that the large-area connecting piece 220 can shield and absorb various noise interferences during signal transmission between multiple signal terminals 21.

[0030] Please see Figure 3 , Figure 4 As shown, the base 221 can be made of insulating material or conductive plastic. Using a base 221 made of conductive plastic is a preferred embodiment. This method can reduce the influence of various noise interferences to suppress high-frequency signal interference. Combined with the connecting piece 220 of the multiple grounding terminals 22, which is a large-area shielding signal terminal 21, the common grounding design of this large-area structure and its material properties can more effectively shield and absorb most of the noise of the multiple signal terminals 21 when transmitting high-frequency signals, so as to achieve good high-frequency signal transmission stability.

[0031] However, it is well known that the conductivity of its conductive plastic is lower than that of metallic conductors such as gold, silver, and copper. Therefore, by adjusting the conductivity of the conductive plastic, 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 combination structure of the plug connector 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.

[0032] However, please see Figure 4 , Figure 5 As shown, terminals made of elastic metal are prone to metal fatigue deformation when subjected to external pressure for a long time. The curved mating portion 222 of the multiple grounding terminals 22 of this invention allows the straight portion of the multiple grounding terminals 22 before bending to abut against the wall of the terminal groove 12. This enables the multiple contacts 31 of the plug connector 3 to form elastic electrical contact with the mating portion 222 of the multiple grounding terminals 22 when they are mated. This approach can strengthen the multiple grounding terminals 22 to maintain elastic support under stress and prevent deformation.

[0033] As described above, the main feature of this utility model is that the multiple grounding terminals 22 of the two sets of conductive terminal groups 2 are directly stamped using a connecting piece 220, and the docking portions 222 of the multiple grounding terminals 22 are bent in reverse so that the suspended ends are all bent relative to each other in the direction of the docking space 11, while the docking portions 212 of the multiple signal terminals 21 are in a relatively oblique state. Even if the multiple signal terminals 21 and the multiple grounding terminals 22 are arranged in a non-plane shape, not only can the large-area connecting piece 220 shield and absorb various noise interferences during signal transmission between the multiple signal terminals 21, but the bent docking portions 222 of the multiple grounding terminals 22 can also act as a shield to reduce signal interference. In addition, when the base 221 is made of conductive plastic, the material properties of the conductive plastic base 221 can greatly reduce the influence of various noise interferences. Therefore, through this impedance matching design of the multi-point grounding path, the purpose of suppressing high-frequency signal interference is achieved.

[0034] 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, Comprising: an insulating base body, which has a mating space and a receiving space formed therein; and a plurality of conductive terminals received in the insulating base body, which includes two sets of a plurality of signal terminals and a plurality of ground terminals arranged correspondingly, wherein the plurality of signal terminals in the conductive terminal set are provided with a base made of insulating material and a mating portion and a soldering portion formed on two sides of the base, the plurality of ground terminals are provided with a connecting piece and a mating portion and a soldering portion formed on two sides of the connecting piece, and a rubber base is provided at the position of the connecting piece, wherein the base and the rubber base of the plurality of signal terminals and the plurality of ground terminals are both provided with a mating portion and a soldering portion, the mating portion of the plurality of ground terminals is reversely folded so that the free ends thereof are oppositely bent towards the mating space, and the mating portion of the plurality of signal terminals is oppositely inclined.

2. The electrical connector of claim 1, wherein: The base on the plurality of signal terminals is made by in-mold injection molding.

3. The electrical connector of claim 1, wherein: The rubber base at the position of the connecting piece on the plurality of ground terminals is made by in-mold injection molding.

4. The electrical connector of claim 1, wherein: The base and the rubber base are correspondingly provided with a positioning portion and a clamping portion which are mutually fitted.

5. The electrical connector of claim 1, wherein: Each of the signal terminals and the ground terminals of the conductive terminal set is arranged in a staggered manner.

6. The electrical connector of claim 1, wherein: The 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 conductive terminal set.

7. The electrical connector of claims 1 or 3, wherein: The rubber base is made of insulating material or conductive plastic.

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