A high-frequency high-speed signal connector

Abstract

The utility model discloses a high frequency high speed signal connector, including insulating seat body, metal conductive sheet, terminal and metal gasket. Insulating seat body includes a pair of inner insulator and sets up the outer insulator of a pair of inner insulator periphery, a pair of mutually pasted metal conductive sheet clamping between a pair of inner insulator, terminal includes signal terminal and ground terminal, both assemble in the outside of inner insulator, and signal terminal includes the insertion end and fixed end, and ground terminal is connected with metal conductive sheet electricity, metal gasket is set up between inner insulator and signal terminal, and metal gasket is connected with signal terminal electricity. The utility model discloses utilize metal gasket to block laser welding high temperature, avoid insulating seat body to be damaged by heat, promote the welding yield, while metal gasket optimization conductive passage, and the conductivity is better, and the transmission stability of high frequency high speed signal is effectively promoted, in addition, metal gasket blocks the injection molding overflow and penetrates the conductive contact area, and further guarantees signal transmission performance and product overall reliability.

Description

Technical Field

[0001] This utility model relates to the field of high-frequency and high-speed connector technology, and in particular to a high-frequency and high-speed signal connector. Background Technology

[0002] In high-frequency and high-speed scenarios, the signal transmission of devices such as data center memory connectors and servers often adopts a combination structure of conductive plastic and ground terminals to achieve basic grounding and signal transmission functions and meet the normal data exchange requirements of the devices.

[0003] Currently, in existing technologies, conductive plastic (typically made of a material with a conductivity of 100 milliohms) directly contacts the soldering area at the ends of signal terminals and ground terminals to transmit electrical signals. However, this structure has significant technical drawbacks in practical applications, specifically in the following two aspects: Firstly, during resistance soldering, the soldering area temperature becomes excessively high. The direct contact and close proximity between the conductive plastic and the terminal soldering area can easily cause the conductive plastic to melt, deform, or even encapsulate the terminal, compromising the effectiveness of the electrical connection and thus affecting signal transmission quality. Secondly, the direct contact between the conductive plastic and the terminal soldering area poses a risk of excess adhesive during injection molding. This excess adhesive can cover the terminal soldering area, reducing signal transmission efficiency and leading to unstable signal transmission.

[0004] In view of the technical problems of poor welding reliability, low signal transmission efficiency and unstable transmission in the existing technology, there is an urgent need for an improved structure to enhance the safety and reliability of terminal welding, while improving the efficiency and stability of high-frequency and high-speed signal transmission. Utility Model Content

[0005] The purpose of this invention is to design a high-frequency, high-speed signal connector to solve the problems of the prior art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A high-frequency, high-speed signal connector is provided, comprising an insulating base, metal conductive plates, terminals, and metal gaskets. The insulating base includes a pair of inner insulators disposed opposite each other along the thickness direction of the connector, and an outer insulator covering the entire periphery of the pair of inner insulators. The outer insulator and the inner insulators are integrally injection molded. A pair of metal conductive plates are provided, which are fitted together along the thickness direction of the connector and sandwiched between the pair of inner insulators. The terminals include signal terminals and ground terminals. Both the signal terminals and the ground terminals are mounted on the side of the inner insulators away from the metal conductive plates. The signal terminals include a plug-in end and a fixed end arranged along the width of the connector. The ground terminals are electrically connected to the metal conductive plates. The metal gaskets are sandwiched between the inner insulators and the signal terminals, and the metal gaskets are electrically connected to the signal terminals.

[0008] Furthermore, the metal gasket includes a plurality of individual gaskets spaced apart along the length of the connector. Each individual gasket has a connecting rib extending integrally along the width of the connector on the same side edge. Adjacent connecting ribs are connected by a straight connecting arm, so that all individual gaskets, connecting ribs, and connecting arms constitute an integral metal component.

[0009] Furthermore, the ground terminal is provided with connecting ears at both ends along the width direction of the connector; a clearance groove is provided between two adjacent single pads for clearance and for the connecting ears of the ground terminal to pass through.

[0010] Furthermore, a receiving groove for embedding the individual gasket is formed on one side of the inner insulator facing the fixed end of the signal terminal. The length of the individual gasket is adapted to the length of the receiving groove, the width of the individual gasket is greater than the groove width of the receiving groove, the thickness of the individual gasket is greater than the groove height of the receiving groove, and the individual gasket and the receiving groove are interference-fitted to achieve limiting and fixing.

[0011] Furthermore, multiple connecting plates are equally spaced along the length of the connector on the metal conductive sheet, and the connecting plates abut against the ground terminal.

[0012] Furthermore, the connecting plate includes a first bent portion, a connecting side plate, a second bent portion, and a flat plate portion connected in sequence. The first bent portion is integrally connected to the metal conductive sheet, and the inner insulator is provided with a connecting groove adapted to the connecting plate.

[0013] Furthermore, the ends of the connecting ears on the same side of the grounding terminal are integrally connected by a connecting strip, and the connecting ears are welded and fixed to the metal conductive sheet; the grounding terminal also includes a first horizontal portion, a connecting portion formed by bending downward from one end of the first horizontal portion, and a second horizontal portion formed by bending horizontally outward from one end of the connecting portion. The first horizontal portion is attached to the flat plate portion and welded and fixed, and the second horizontal portion is attached to the metal conductive sheet and welded and fixed.

[0014] Furthermore, the plug end of the signal terminal has a bevel on the side facing away from the metal conductive sheet, and the bevel is embedded inside the inner insulator; the fixed end of the signal terminal has a relief recess on the side facing the metal conductive sheet.

[0015] Furthermore, multiple ground terminals are spaced apart along the length of the connector, and a pair of signal terminals are provided between two adjacent ground terminals.

[0016] Furthermore, the inner insulator has a positioning protrusion on the side away from the metal conductive sheet along the length of the connector, and the positioning protrusion is used to limit the terminal.

[0017] The beneficial effects of this utility model are as follows: This utility model provides a high-frequency, high-speed signal connector in which a metal gasket is sandwiched between the signal terminal and the inner insulator. Utilizing the high melting point of the metal, it effectively blocks the high temperatures generated during the welding process of the signal terminal, preventing the inner insulator from melting, deforming, detaching, or encasing the terminal. This solves the problem of high-temperature damage to the inner insulator during welding, improving the welding yield and the integrity of the electrical connection structure. Simultaneously, because the conductivity of metal is far superior to that of plastic, the transmission efficiency of high-frequency, high-speed signals is significantly improved. Furthermore, the metal conductive sheet sandwiched between the inner insulator and the signal terminal forms a physical barrier during external mold injection, preventing plastic overflow from seeping into the conductive contact area and ensuring pure metal contact between the metal gasket and the signal terminal, significantly improving the stability of high-frequency, high-speed signal transmission. In addition, the interference fit of the metal gasket within the receiving groove effectively limits the relative displacement between the signal terminal and the metal gasket, preventing terminal loosening, misalignment, and other defects, thus improving the overall reliability of the product structure. Attached Figure Description

[0018] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0019] Figure 1 A schematic diagram of the overall structure of a high-frequency, high-speed signal connector provided in an embodiment of this utility model;

[0020] Figure 2A partial structural schematic diagram of a high-frequency, high-speed signal connector provided for an embodiment of this utility model;

[0021] Figure 3 This is an embodiment of the present utility model. Figure 2 A sectional view;

[0022] Figure 4 This is an embodiment of the present utility model. Figure 2 A cross-sectional view from another perspective;

[0023] Figure 5 An exploded view of a high-frequency, high-speed signal connector provided for an embodiment of this utility model;

[0024] Figure 6 A schematic diagram of the structure of a metal conductive sheet in a high-frequency, high-speed signal connector provided for an embodiment of this utility model;

[0025] Figure 7 This is an embodiment of the present utility model. Figure 6 Enlarged structural diagram at point A;

[0026] Figure 8 A top view of a metal gasket in a high-frequency, high-speed signal connector provided for an embodiment of this utility model;

[0027] Figure 9 A schematic diagram of the structure of the ground terminal in a high-frequency, high-speed signal connector provided for an embodiment of this utility model;

[0028] Figure 10 This is a schematic diagram of the structure of a signal terminal in a high-frequency, high-speed signal connector provided for an embodiment of the present invention.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] Inner insulator-1, receiving groove-11, positioning protrusion-12, connecting groove-13, outer insulator-2, metal conductive sheet-3, connecting plate-31, first bend-311, connecting side plate-312, second bend-313, flat plate-314, signal terminal-4, inclined surface-41, clearance recess-42, ground terminal-5, connecting ear-51, connecting strip-52, first horizontal part-53, connecting part-54, second horizontal part-55, metal gasket-6, single gasket-61, connecting rib-62, connecting arm-63, clearance groove-64. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0032] like Figures 1 to 10 The following is an embodiment of this application:

[0033] This utility model provides a high-frequency, high-speed signal connector, including an insulating base, a metal conductive sheet 3, terminals, and a metal gasket 6. Specifically:

[0034] The insulating base includes a pair of inner insulators 1 arranged opposite each other along the thickness direction of the connector, and an outer insulator 2 covering the outer periphery of the pair of inner insulators 1. The outer insulator 2 is integrally injection molded with the inner insulators 1. The outer insulator 2 provides protection for the terminals, metal conductive sheets 3, metal gaskets 6 and the pair of inner insulators 1, thereby improving the product's dustproof, moisture-proof and vibration-resistant performance.

[0035] The metal conductive sheets 3 are provided in pairs, and the pair of metal conductive sheets 3 are attached to each other along the thickness direction of the connector and sandwiched between a pair of inner insulators 1; a plurality of connecting plates 31 are provided at equal intervals along the length direction of the connector on the metal conductive sheets 3, and the connecting plates 31 abut against the ground terminal 5; in addition, the connecting plate 31 includes a first bent part 311, a connecting side plate 312, a second bent part 313 and a flat plate part 314 connected in sequence, the first bent part 311 is integrally connected to the metal conductive sheets 3, and the inner insulator 1 is provided with a connecting groove 13 adapted to the connecting plate 31; after assembly, the connecting plate 31 is embedded in the interior of the connecting groove 13 to achieve precise positioning of the metal conductive sheets 3 and the inner insulator 1 and prevent the metal conductive sheets 3 from shifting laterally.

[0036] The terminals include signal terminals 4 and ground terminals 5. Both signal terminals 4 and ground terminals 5 are mounted on the side of the inner insulator 1 facing away from the metal conductive sheet 3. The signal terminal 4 includes a plug-in end and a fixed end arranged along the width direction of the connector. The plug-in end of the signal terminal 4 has a bevel 41 on the side facing away from the metal conductive sheet 3, and the bevel 41 is embedded inside the inner insulator 1. The fixed end of the signal terminal 4 has a relief recess 42 on the side facing the metal conductive sheet 3. Multiple ground terminals 5 are spaced apart along the length direction of the connector. A pair of signal terminals 4 is provided between every two adjacent ground terminals 5. The ground terminals 5 are electrically connected to the metal conductive sheet 3, forming multiple signal transmission and grounding channels to meet the requirements of high-frequency, high-speed, multi-channel transmission.

[0037] Furthermore, the ground terminal 5 is provided with connecting ears 51 at both ends along the width direction of the connector. The ends of the connecting ears 51 on the same side of the ground terminal 5 are integrally connected by connecting strips 52. The ground terminal 5 has high overall structural strength and is not easily deformed. The connecting ears 51 and the metal conductive sheet 3 are fixed by laser welding. The welding contact area is large, the grounding conduction is stable, and it can effectively reduce high-frequency interference and improve shielding performance. In addition, the ground terminal 5 also includes a first horizontal part 53, a connecting part 54 formed by bending downward from one end of the first horizontal part 53, and a second horizontal part 55 formed by bending horizontally outward from one end of the connecting part 54. The first horizontal part 53 is attached to the flat part 314 and welded and fixed, and the second horizontal part 55 is attached to the metal conductive sheet 3 and welded and fixed. The grounding terminal 5 is configured as a split drop structure formed by bending the first horizontal part 53, the connecting part 54, and the second horizontal part 55 in sequence. By utilizing the high and low misaligned surfaces formed by bending, the grounding terminal 5 can be respectively attached and welded to the two different mounting reference surfaces, the flat part 314 and the metal conductive sheet 3. On the one hand, it realizes the double-point welding and fixing of the grounding terminal 5, which greatly improves the overall assembly firmness of the terminal, disperses the structural stress under assembly and vibration operation, and avoids the problems of solder joint detachment and terminal offset loosening that are easy to occur in single-point welding. On the other hand, it constructs a dual-path grounding conductive loop, effectively increases the grounding conductive contact area, reduces the overall grounding impedance, and weakens electromagnetic crosstalk and signal loss in the high-frequency signal transmission process.

[0038] The metal gasket 6 is sandwiched between the inner insulator 1 and the signal terminal 4, and the metal gasket 6 is electrically connected to the signal terminal 4, that is, the metal gasket 6 and the signal terminal 4 are in pure metal contact. Moreover, the conductivity of the metal material is better than that of the plastic material, which greatly improves the high-frequency and high-speed signal transmission efficiency. At the same time, the metal material has a high melting point, which effectively isolates the high temperature generated by the welding operation of the signal terminal, avoids the inner insulator from melting, deforming or falling off due to heat, solves the problem of high temperature damage to the inner insulator during welding, and improves the welding yield and the structural integrity of the electrical connector.

[0039] Furthermore, the metal gasket 6 includes a plurality of individual gaskets 61 spaced apart along the length of the connector. Each individual gasket 61 has a connecting rib 62 integrally extending along the width of the connection on the same side edge. Adjacent connecting ribs 62 are connected by a straight connecting arm 63, so that all individual gaskets 61, connecting ribs 62, and connecting arms 63 constitute an integral metal component. An avoidance groove 64 is provided between two adjacent individual gaskets 61 for avoiding and allowing the connecting lug of the ground terminal to pass through. In this embodiment, the avoidance groove 64 is "T" shaped to allow the connecting lug 51 of the ground terminal 5 to pass through, avoiding structural interference and ensuring the consistency of the assembly of multiple sets of ground terminals 5.

[0040] Furthermore, the inner insulator 1 has a receiving groove 11 on the side facing the fixed end of the signal terminal 4 for embedding the individual gasket 61. The length L1 of the individual gasket 61 is adapted to the length L2 of the receiving groove 11. The width W1 of the individual gasket 61 is greater than the groove width W2 of the receiving groove 11. The thickness H1 of the individual gasket 61 is greater than the groove height H2 of the receiving groove 11. The individual gasket 61 and the receiving groove 11 are interference-fitted to achieve limiting and fixing, secure assembly, no loosening during long-term use, and improve the reliability of the overall product structure.

[0041] In addition, the inner insulator 1 has a positioning protrusion 12 on the side away from the metal conductive sheet 3 along the length of the connector. The positioning protrusion 12 is used to limit the terminal and prevent the signal terminal 4 and the ground terminal 5 from shifting or loosening, thereby further improving the stability of the terminal assembly.

[0042] The assembly process of this utility model embodiment adopts a process of pre-assembling two sets of identical structural components separately, then assembling the joint, and finally injection molding the whole. The specific steps are as follows: First, assemble two sets of terminal pre-assembly components with identical structures. The assembly method of a single component is as follows: First, rivet the ground terminal and the signal terminal. Then, inject the riveted ground terminal and signal terminal into an inner mold to form an inner insulator. The positioning protrusions on the inner insulator fix and position the terminals. Then, weld the ground terminal to the metal conductive sheet, so that the connecting plate of the metal conductive sheet is embedded in the connecting groove of the inner insulator. Then, the individual gasket of the metal gasket is interference-fitted into the receiving groove opened on the side of the inner insulator facing the fixed end of the signal terminal. The signal terminal and the individual gasket are laser welded to fix them, completing the structural pre-assembly of a single component. After the two components are pre-assembled independently, the corresponding metal conductive sheets of the two components are connected to each other and fixed by laser welding, so that the two separate structures are integrated into a whole structure. Finally, the integrated whole structure is injection molded. After the outer insulator is formed, the product is completed.

[0043] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A high-frequency, high-speed signal connector, characterized in that, include: Insulating base, metal conductive sheet, terminal and metal gasket; The insulating base includes a pair of inner insulators disposed opposite each other along the thickness direction of the connector, and an outer insulator covering the entire outer periphery of the pair of inner insulators, wherein the outer insulator and the inner insulator are integrally injection molded. The metal conductive sheets are provided in pairs, and the pair of metal conductive sheets are attached to each other along the thickness direction of the connector and sandwiched between a pair of inner insulators. The terminal includes a signal terminal and a ground terminal. Both the signal terminal and the ground terminal are mounted on the side of the inner insulator away from the metal conductive sheet. The signal terminal includes a plug end and a fixed end arranged along the width of the connector. The ground terminal is electrically connected to the metal conductive sheet. The metal gasket is sandwiched between the inner insulator and the signal terminal, and the metal gasket is electrically connected to the signal terminal.

2. The high-frequency, high-speed signal connector according to claim 1, characterized in that, The metal gasket includes multiple individual gaskets spaced apart along the length of the connector. Each individual gasket has a connecting rib extending integrally along the width of the connector on the same side edge. Adjacent connecting ribs are connected by a straight connecting arm, so that all individual gaskets, connecting ribs, and connecting arms constitute an integral metal component.

3. The high-frequency, high-speed signal connector according to claim 2, characterized in that, The ground terminal is provided with connecting ears at both ends along the width direction of the connector; a clearance groove is provided between two adjacent single gaskets for clearance and for the connecting ears of the ground terminal to pass through.

4. The high-frequency, high-speed signal connector according to claim 2, characterized in that, The inner insulator has a receiving groove on the side facing the fixed end of the signal terminal for embedding the individual gasket. The length of the individual gasket is adapted to the length of the receiving groove, the width of the individual gasket is greater than the width of the receiving groove, the thickness of the individual gasket is greater than the height of the receiving groove, and the individual gasket and the receiving groove are interference-fitted to achieve limiting and fixing.

5. The high-frequency, high-speed signal connector according to claim 3, characterized in that, Multiple connecting plates are evenly spaced along the length of the connector on the metal conductive sheet, and the connecting plates abut against the ground terminal.

6. The high-frequency, high-speed signal connector according to claim 5, characterized in that, The connecting plate includes a first bent portion, a connecting side plate, a second bent portion, and a flat plate portion connected in sequence. The first bent portion is integrally connected to the metal conductive sheet, and the inner insulator is provided with a connecting groove adapted to the connecting plate.

7. The high-frequency, high-speed signal connector according to claim 6, characterized in that, The ends of the connecting ears on the same side of the grounding terminal are integrally connected by a connecting strip, and the connecting ears are welded and fixed to the metal conductive sheet; the grounding terminal also includes a first horizontal part, a connecting part formed by bending downward from one end of the first horizontal part, and a second horizontal part formed by bending horizontally outward from one end of the connecting part. The first horizontal part is attached to the flat plate and welded and fixed, and the second horizontal part is attached to the metal conductive sheet and welded and fixed.

8. The high-frequency, high-speed signal connector according to claim 1, characterized in that, The plug end of the signal terminal has a bevel on the side facing away from the metal conductive sheet, and the bevel is embedded inside the inner insulator; the fixed end of the signal terminal has a relief recess on the side facing the metal conductive sheet.

9. The high-frequency, high-speed signal connector according to claim 1, characterized in that, The ground terminals are spaced apart along the length of the connector, and a pair of signal terminals are provided between two adjacent ground terminals.

10. The high-frequency, high-speed signal connector according to claim 1, characterized in that, The inner insulator has a positioning protrusion on one side away from the metal conductive sheet along the length of the connector, and the positioning protrusion is used to limit the terminal.

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