Wire end connector

Abstract

The utility model discloses a wire end connector, which is characterized in that a plurality of conductive terminals with signal and grounding terminals in upper and lower rows and impedance matching elements positioned between the upper and lower rows are positioned on a base, one side of each signal terminal is welded on a signal wire core of a plurality of cables, and shielding plates are positioned on the upper and lower surfaces of the base. The two shielding plates are provided with a plurality of contact and positioning components which are electrically connected with the plurality of grounding terminals, the plurality of contact and positioning components are in multipoint contact with the plurality of grounding terminals except the tongue plate positions of the plurality of conductive terminals, and the upper surface and the lower surface of the impedance matching element are electrically connected with the plurality of grounding terminals. And an insulating body is arranged outside the base and the two shielding plates, and a common grounding state is formed through the multi-point contact design.

Description

Technical Field

[0001] This utility model relates to a wire-end connector, specifically one that enhances the shielding efficiency against electromagnetic interference by forming a multi-point contact and common grounding state with the grounding terminal through multiple contact and positioning components and impedance matching elements of two shielding plates. 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] In addition, near-end crosstalk (NEXT) and far-end crosstalk (FEXT) are two common problems in high-frequency characteristics. 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 the Peripheral Component Interconnect Express (PCIe) bus as a high-speed signal transmission interface. Mini Cool Edge 0 (MCIO) has become the mainstream specification in the market. With technological advancements, from PCIe Gen4 to PCIe Gen6 and the latest PCIe Gen7, the MCIO interface speed has also increased with demand. Besides requiring miniaturization, MCIO interface connectors also need excellent high-speed signal transmission stability. However, the tongue structure of existing MCIO connectors consists of multiple contacts formed by copper foil on two surfaces of a printed circuit board. With the miniaturization of the tongue, there is often a 10% tolerance in size due to manufacturing process factors. But PCIe… The high-speed signal transmission required by the Gen7 specification cannot be met due to insertion loss and reflection loss. The main reason is the impedance mismatch caused by the size variation of the tongue plate, which leads to excessive reflection loss. However, the key factors to improve the high-frequency problem of connectors are short-circuit grounding, low impedance grounding, multi-point grounding, and grounding loop design that increases the grounding area of ​​the metal shield and grounding line. These factors are another major reason for improving the high-frequency problem of connectors. Therefore, it can be understood that the quality of the common grounding design of the connector shield and grounding line will affect the stability of high-frequency transmission. This part really needs to be improved and better design solutions by those in this industry. Utility Model Content

[0006] Therefore, in view of the above-mentioned problems and deficiencies, the purpose of this utility model is to provide a wire end connector.

[0007] The main purpose of this utility model is to position multiple conductive terminals with signal and grounding terminals in upper and lower rows on the base, as well as positioning impedance matching elements between the upper and lower rows. Each conductive terminal is positioned on both sides of a tongue plate and a signal core soldered to multiple cables. The shielding plate positioned on the upper and lower surfaces of the base is provided with multiple contact members and positioning members electrically connected to the multiple grounding terminals. The multiple contact members make multiple points of contact with the multiple grounding terminals in addition to being located at the tongue plate positions of the multiple conductive terminals. The positioning members are fixed to the positioning parts extending from the grounding terminals and are in electrical contact. The upper and lower surfaces of the impedance matching elements are electrically connected to the multiple grounding terminals. The base and the two shielding plates are equipped with an insulating body. The interference and noise from the two shielding plates, the impedance matching elements and the multiple grounding terminals are grounded together and released through the multiple grounding terminals by connecting to a preset docking connector.

[0008] To achieve the above objectives, this utility model provides a wire-end connector, comprising:

[0009] A base is positioned with two rows of multiple conductive terminals, and the two sides of the multiple conductive terminals are located outside the base respectively. The multiple conductive terminals include signal terminals and grounding terminals, and the multiple signal terminals are soldered to the signal cores of multiple cables.

[0010] Two shielding plates are installed on the base, and the two shielding plates include multiple contact members and positioning members electrically connected to multiple grounding terminals. In addition to the tongue plates located on the multiple conductive terminals, the multiple contact members and positioning members also make multiple electrical contacts with the multiple grounding terminals.

[0011] An insulating body is installed on the outside of the base and the two shielding plates.

[0012] The base includes a first terminal block and a second terminal block, and an impedance matching element is provided between the first terminal block and the second terminal block. The impedance matching element includes conductive plastic and a grounding sheet that are in-mold injection molded and contact the plurality of grounding terminals.

[0013] Both the first terminal block and the second terminal block are provided with multiple conductive terminals formed by in-mold injection molding.

[0014] The contact component includes a grounding spring and an abutment spring.

[0015] The shielding plate is provided with the plurality of positioning components, and the base is provided with the plurality of positioning parts between adjacent cables, which can allow the rear ends of the plurality of grounding terminals to protrude upward and isolate the plurality of cables, and the plurality of positioning components are fixed to the plurality of positioning parts in a position. Attached Figure Description

[0016] Figure 1 This is a perspective view of the wire end connector of this utility model.

[0017] Figure 2 This is a partial perspective view of the wire-end connector of this utility model.

[0018] Figure 3 This is another partial perspective view of the wire-end connector of this utility model.

[0019] Figure 4 for Figure 2 3D exploded view.

[0020] Figure 5 for Figure 2 Another perspective of the three-dimensional exploded view.

[0021] Figure 6 for Figure 2 Side view sectional view.

[0022] Explanation of reference numerals in the attached drawings: 1-Base; 11-First terminal block; 12-Second terminal block; 13-Conductive terminal; 131-Signal terminal; 132-Grounding terminal; 1321-Positioning part; 1322-Positioning groove; 14-Cable; 141-Signal wire core; 142-Grounding wire core; 15-Base plate; 151-Snap-on; 152-Snap-on groove; 153-Baffle; 154-Wire frame; 1541-Wire groove; 155-Hollow part; 156-Perforation; 157-Through hole; 16-Tongue plate; 2-Impedance matching element; 21-Conductive plastic; 211-Front row protrusion; 212-Rear row protrusion; 22-Grounding piece; 221-Spring arm; 3-Shielding plate; 31-Contact member; 311-Grounding spring piece; 312-Abutting spring piece; 32-Positioning member. Detailed Implementation

[0023] 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 preferred embodiment of this utility model, so as to facilitate a complete understanding.

[0024] Please see Figures 1-6 The figures shown are a three-dimensional view, a partial three-dimensional view, and another partial three-dimensional view of the wire-end connector of this utility model. Figure 2 3D exploded view, Figure 2 Another perspective 3D exploded view and Figure 2 The side sectional view clearly shows that the electrical connector of this utility model mainly includes a base 1, an impedance matching element 2, two shielding plates 3, and an insulating body 4. Its main components and features are described in detail below:

[0025] The base 1 includes a first terminal block 11 located in the upper row and a second terminal block 12 located in the lower row. Both the first terminal block 11 and the second terminal block 12 are provided with a plurality of conductive terminals 13 formed by in-mold injection molding. The plurality of conductive terminals 13 include signal terminals 131 and ground terminals 132 arranged in an alternating manner. A plurality of cables 14 are soldered on the first terminal block 11 and the second terminal block 12 at the rear end of the plurality of conductive terminals 13. The cables 14 include a plurality of signal wire cores 141 soldered to the plurality of signal terminals 131 and a plurality of ground wire cores 142 soldered to the plurality of ground terminals 132.

[0026] The impedance matching element 2 is disposed between the first terminal block 11 and the second terminal block 12. The impedance matching element 2 includes multiple front row bumps 211, rear row bumps 212, and multiple spring arms 221 of the grounding piece 22 inside the conductive plastic 21 whose upper and lower surfaces are in contact with the multiple grounding terminals 132.

[0027] The two shielding plates 3 are integrally formed by stamping and are mounted on the first terminal block 11 and the second terminal block 12. The shielding plate 3 includes multiple contact members 31 and positioning members 32 electrically connected to the multiple grounding terminals 132. The horizontal width of the shielding plate 3 is provided with multiple array-shaped and stamped contact members 31, grounding springs 311, contact springs 312 and positioning members 32. The multiple contact members 31 and positioning members 32 are in multi-point contact with the multiple grounding terminals 132 except at the position of the tongue plate 16 of the multiple conductive terminals 13. The upper and lower surfaces of the impedance matching element 2 are electrically connected to the multiple grounding terminals 132. The multiple spring arms 221 of the grounding piece 22 extending from the conductive plastic 21 also elastically contact the multiple grounding terminals 132. An insulating body 4 is installed on the base 1 and the outside of the two shielding plates 3. A common grounding state is formed through the above-mentioned multi-point contact design.

[0028] The insulating body 4 is installed on the outside of the base 1. The insulating body 4 is made of plastic and is assembled and fixed with the base 1 by a snap-fit ​​structure (such as a snap and a groove). The assembly structure between the base 1 and the insulating body 4 is not a technical feature of this case, so no additional drawings are provided for explanation.

[0029] The first terminal block 11 and the second terminal block 12 of the aforementioned base 1 have the same structure, each including a thick base plate 15 and a thin tongue plate 16 located at the front end of the base plate 15. A latch 151 and a latching groove 152 are formed on each side of the base plate 15 to allow the first terminal block 11 and the second terminal block 12 to engage and fix each other. A baffle 153 is formed on the front side of the base plate 15 to prevent the multiple conductive terminals 13 from warping, and a wire frame 154 is formed on the rear side of the base plate 15. Multiple wire grooves 1541 are formed on the wire frame 154 for positioning the multiple cables 14. A cutout portion 155 is formed between the baffle 153 and the wire frame 154 to expose the solder joints of the multiple conductive terminals 13 and the multiple cables 14. The cutout portion 155 also allows the rear ends of the multiple grounding terminals 132 to protrude upwards and... The shielding plate 3 has multiple positioning parts 1321 that isolate the multiple cables 14 and accommodates them. The shielding plate 3 has multiple positioning members 32 for the multiple positioning parts 1321 to pass through and position. The baffle 153 has multiple through holes 156 for the multiple grounding springs 311 of the shielding plate 3 to pass through. The multiple grounding terminals 132 have multiple positioning grooves 1322 corresponding to the multiple through holes 156 for the multiple grounding springs 311 to extend into and engage. The baffle 153 also has multiple hollow through holes 157 located above the signal terminals 131 of the multiple conductive terminals 13. The multiple hollow through holes 157 can retain the area where the signal terminals 131 and signal wire cores 141 are soldered to the air, so as to control the impedance matching of the wire end connector and reduce the transmission signal attenuation caused by insertion loss and reflection loss.

[0030] The impedance matching element 2 includes a conductive plastic 21 and a metal grounding piece 22 formed by in-mold injection inside the conductive plastic 21. The multiple bumps formed on the conductive plastic 21 include multiple front bumps 211 and multiple rear bumps 212. Multiple spring arms 221 are formed where the grounding piece 22 is exposed on the conductive plastic 21. The conductivity of the conductive plastic 21 is less than that of metal conductors such as gold, silver, and copper. By adjusting the conductivity of the conductive plastic 21, impedance matching with the conductive terminal 13 can be achieved, which can significantly reduce the problems of overall return loss, insertion loss, near-end crosstalk (NEXT), and far-end crosstalk (FEXT) of the line connector, thereby making the high-speed signal transmission characteristics better and more stable. In addition to enhancing impedance matching, the combined structure of impedance matching element 2 also has the functions of absorbing vibration and instantaneous arc generated when mating with interlocking connectors (such as board-end connectors), shielding electromagnetic interference (EMI), and forming a common ground with the two shielding plates 3 and multiple grounding terminals 132.

[0031] When the cable connector of this utility model is mated with a preset mating connector (not shown in the figure), the two shielding plates 3, the impedance matching element 2 and the multiple grounding terminals 132 are designed with multiple points of contact to form a common ground, so as to reduce high-frequency noise and effectively release electromagnetic waves by forming a common grounding loop through the grounding terminals 132 and the grounding structure of the preset mating connector. This ingenious design can simultaneously achieve the effects of short-circuit grounding, low impedance grounding, multi-point grounding and increasing grounding area, and can effectively suppress the interference and noise generated by the connector during high-frequency transmission, and further increase the stability of the cable connector during high-frequency signal transmission.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection 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 within the scope of the present utility model and are hereby stated.

[0033] In summary, the above-mentioned wire-end connector of this utility model can effectively achieve its function and purpose when used, thus this utility model is indeed a utility model with excellent practicality.

Claims

1. A wire end connector characterized by, Comprising: A base is positioned with two rows of multiple conductive terminals, and the two sides of the multiple conductive terminals are respectively located outside the base, and the multiple conductive terminals include signal terminals and ground terminals, and the multiple signal terminals are welded on the signal wire cores of multiple cables; Two shielding plates are installed on the base, and the two shielding plates include multiple contact members and positioning members electrically connected to the multiple ground terminals, and the multiple contact members and positioning members are electrically contacted with the multiple ground terminals at multiple points in addition to the tongue plates of the multiple conductive terminals; An insulating body is installed outside the base and the two shielding plates.

2. The wire end connector of claim 1, wherein, The base includes a first terminal seat and a second terminal seat, and an impedance matching element is arranged between the first terminal seat and the second terminal seat, and the impedance matching element includes conductive plastic molded by in-mold injection and ground sheets contacted with the multiple ground terminals.

3. The wire end connector of claim 2, wherein, The first terminal seat and the second terminal seat are both provided with multiple conductive terminals molded by in-mold injection.

4. The wire end connector of claim 1, wherein, The contact member includes a ground spring and a contact spring.

5. The wire end connector of claim 1, wherein, The shielding plate is provided with the multiple positioning members, and the base is provided with multiple positioning portions between adjacent cables, which can make the rear ends of the multiple ground terminals protrude upward and can isolate the multiple cables, and the multiple positioning members are fixed on the multiple positioning portions in a certain position.

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