Gen-Z high-speed electric connector

Abstract

The utility model relates to the field of electric connectors, and provides a Gen-Z high-speed electric connector. Comprising a terminal assembly, the terminal assembly comprises two rows of terminals which are symmetrically distributed and a plastic body, and all grounding terminals in each row of terminals are connected in series through one or more of a first conductive structure, a second conductive structure and a third conductive structure; the first conductive structure comprises an installation groove in the plastic body and a conductive strip installed in the installation groove, the second conductive structure comprises a metal sheet, an elastic piece is formed on one side of the metal sheet in the width direction in a punching mode, the position of the elastic piece corresponds to the position of the grounding terminal, and the third conductive structure comprises a wire. The wire is provided with a plurality of welding heads corresponding to the grounding terminals. The grounding terminals are connected in series by adopting a plurality of independent or combined series grounding terminal structures, so that the interference problem of the electric connector during high-frequency signal transmission is solved, and the requirement of high-frequency signal transmission is met.

Description

Technical Field

[0001] This utility model relates to the field of electrical connectors, specifically to a Gen-Z high-speed electrical connector. Background Technology

[0002] Gen-Z is a new high-speed interconnect standard targeting the data center and server markets. It's a memory-centric bus architecture protocol offering advantages such as high bandwidth, low latency, support for advanced workloads, good compatibility, and cost-effectiveness. Currently, Gen-Z high-speed interfaces offer numerous advantages. Gen-Z connectors have a 0.6mm pin pitch, meaning higher pin density and higher speeds within the same size configuration, supporting high-speed differential pairs for 32G NRZ and 56G PAM4. Gen-Z 1.1 introduces PCIe 5.0, increasing the speed per lane to 32GT / s. With relatively relaxed technical limitations, it enables Gen-ZE-PAM4-50G-Fabric links, achieving a raw data rate of 53.125GT / s, aiming for higher transmission speeds and lower latency.

[0003] Due to the smaller terminal spacing and higher transmission rate of Gen-Z high-speed electrical connectors, signal transmission problems such as signal interference may occur at the ground terminal during the transmission of high-frequency information. The electrical connectors need to pass rigorous high-frequency tests to meet the requirements of high-frequency signal transmission during use. Summary of the Invention

[0004] To address the interference issues encountered by point connectors during high-frequency signal transmission, this invention provides a Gen-Z high-speed electrical connector.

[0005] The technical solution adopted by this utility model is as follows:

[0006] A Gen-Z high-speed electrical connector includes a terminal assembly comprising two symmetrically distributed rows of terminals and a plastic body. Each terminal includes signal terminals and ground terminals, and each terminal includes a retaining portion, a contact portion, and a soldering portion. The retaining portion of the terminal is fixedly connected to the plastic body, and the soldering portion and contact portion of the terminal extend from both sides of the plastic body. All ground terminals in each row are connected in series via one or more of a first conductive structure, a second conductive structure, and a third conductive structure. The first conductive structure includes a mounting groove extending along the terminal arrangement direction on the plastic body. The first conductive structure includes a conductive strip installed in a mounting groove, the mounting groove extending to the holding part of the terminal in the depth direction. The conductive strip has a protrusion at the position corresponding to the grounding terminal, and the protrusion contacts the grounding terminal. The second conductive structure includes a metal sheet installed on the outside of the plastic body. A spring is stamped on one side of the width direction of the metal sheet, and the position of the spring corresponds to the grounding terminal. The spring is pressed into the welding part or contact part of the grounding terminal. The third conductive structure includes a wire with multiple welding heads corresponding to the grounding terminal on the wire. The welding heads are welded to the welding part or contact part of the grounding terminal.

[0007] Furthermore, the second conductive structure is characterized in that spring sheets are stamped on both sides of the metal sheet in the width direction, and the spring sheets on both sides are respectively pressed and fitted with the welding part and contact part of a row of grounding terminals on the same side.

[0008] Furthermore, the solder joints and contact joints of all grounding terminals in the same row of terminals are connected in series by wires.

[0009] Furthermore, a pair of positioning posts and a pair of limiting bosses are provided on the mating surface of the plastic body and the metal sheet, and the metal sheet is provided with positioning holes and limiting holes corresponding to the positioning posts and limiting bosses.

[0010] Furthermore, the high-speed electrical connector includes multiple terminal assemblies, which are installed within a plastic housing. The plastic housing includes multiple cavities corresponding to the terminal assemblies. The interior of each cavity is provided with a guide groove, and the outer side of the plastic body is provided with a guide boss that mates with the guide groove.

[0011] Furthermore, the metal sheet is located between the plastic body and the inner wall of the cavity.

[0012] Furthermore, the conductive strip is made of conductive plastic, electroplated plastic, or metal, and the conductive strip is pressed against the inner wall of the mounting groove by the protruding ribs on both sides.

[0013] After adopting the above technical solutions, the beneficial effects of this utility model are as follows: by using a variety of individual or combined series grounding terminal structures to connect the grounding terminals in series, the interference problem of electrical connectors when transmitting high-frequency signals is solved, and the requirements of high-frequency signal transmission are met. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the first conductive structure.

[0016] Figure 3 This is a schematic diagram of the second conductive structure.

[0017] Figure 4 This is a schematic diagram of the third conductive structure.

[0018] In the figure: plastic housing 1, terminal assembly 2, terminal 21, contact part 211, holding part 212, welding part 213, plastic body 22, guide groove 3, mounting groove 4, conductive strip 5, protrusion 6, metal sheet 7, positioning post 8, limiting boss 9, spring 10, wire 11, welding head 12. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0020] As shown in the figure, a Gen-Z high-speed electrical connector consists of a plastic housing 1 and multiple terminal assemblies 2 installed inside the plastic housing. The plastic housing 1 has multiple cavities corresponding to the terminal assemblies, and the terminal assemblies 2 are fixedly installed in the corresponding cavities to form a high-speed electrical connector.

[0021] The terminal assembly 2 includes two symmetrically distributed rows of terminals 21 and a plastic body 22. The plastic body 22 adopts a split design, that is, one row of terminals corresponds to one plastic body, and two plastic bodies are connected by dovetail grooves or T-slots to form a plastic body. A guide groove 3 is provided inside the cavity of the plastic housing, and a guide boss that mates with the guide groove is provided on the outside of the plastic body 22. The plastic body 22 and the plastic housing 1 are fixed together by interference.

[0022] The corresponding plastic parts are injection molded on the outside of the terminals 21 in the same row using an in-mold molding method. The terminals in the same row include multiple signal terminals and multiple ground terminals. Each terminal, from head to tail, consists of a contact portion 211, a holding portion 212, and a soldering portion 213. The holding portion 212 of the terminal is integrally formed with the plastic body 22. The soldering portion 213 and the contact portion 211 of the terminal extend from both sides of the plastic body 22. The contact parts 211 of the two rows of terminals press against the contact points of the memory chip from both sides to form an electrical connection. The soldering portions 213 of the two rows of terminals clamp and solder to the printed circuit board from both sides to form an electrical connection.

[0023] To improve the high-frequency performance of electrical connectors, it is necessary to connect the grounding terminals on the same side in series through a conductive structure to prevent signal interference. There are three main types of series conductive structures.

[0024] The first conductive structure consists of mounting grooves 4 extending along the terminal arrangement direction on each plastic body, and conductive strips 5 installed within the mounting grooves 4. The mounting grooves 4 extend to the terminal holding portion 212 in the depth direction. The conductive strips 5 have protrusions 6 at positions corresponding to the grounding terminals. The protrusions 6 contact the holding portions 212 of the grounding terminals, thus connecting the grounding terminals in the same row in series. The conductive strips 5 are made of conductive plastic, electroplated plastic, or metal. The conductive strips are fixed by pressing against the inner wall of the mounting groove through the protrusions on both sides, ensuring stable contact between the protrusions 6 and the holding portions of the grounding terminals.

[0025] The second conductive structure is a stamped metal sheet 7, which is installed on the outside of the plastic body 22. A pair of positioning posts 8 and a pair of limiting bosses 9 are provided on the mating surface between the plastic body 22 and the metal sheet 7. The metal sheet 7 has positioning holes and limiting holes corresponding to the positioning posts 8 and limiting bosses 9, enabling the positioning and installation of the metal sheet 7. After the terminal assembly is installed into the plastic housing, the metal sheet 7 is clamped and fixed by the outer wall of the plastic body 22 and the inner wall of the plastic housing 1. Spring pieces 10 are stamped on both sides of the metal sheet 7 in the width direction. The spring pieces 10 have an arc shape to ensure their elasticity. The spring pieces on both sides are respectively pressed and fitted with the welding part and contact part of a row of grounding terminals on the same side. All grounding terminals on the same side are connected in series through the spring pieces 10 and the metal sheet 8. Depending on actual needs, a two-sided spring piece method can be used, or a simple spring piece method can be used, that is, the contact part and welding part of the grounding terminals on the same side can be connected in series using spring pieces simultaneously, or only one part of the contact part and welding part can be connected in series using spring pieces.

[0026] The third conductive structure is a conductor 11, which extends along the terminal arrangement direction. The conductor 11 is provided with multiple solder heads 12 corresponding to the grounding terminals. The solder heads 12 are soldered to the soldering part or contact part 213 of the grounding terminal, or two guides are used, and the soldering part and contact part of the terminal on the same side are soldered in series. The conductor is wrapped with an insulating layer except for the solder joints.

[0027] Based on the actual frequency of the transmitted signal and the results of high-frequency testing, the grounding terminals are connected in series using any one or a combination of the first, second, and third conductive structures to ensure the transmission effect.

Claims

1. A Gen-Z high-speed electrical connector, comprising a terminal assembly, the terminal assembly including two symmetrically distributed rows of terminals and a plastic body, each terminal including a signal terminal and a ground terminal, each terminal including a retaining portion, a contact portion, and a soldering portion, the retaining portion of the terminal being fixedly connected to the plastic body, the soldering portion and the contact portion of the terminal extending from both sides of the plastic body, characterized in that, All grounding terminals in each row of terminals are connected in series via one or more of the following conductive structures: a first conductive structure, a second conductive structure, and a third conductive structure. The first conductive structure includes a mounting groove extending along the terminal arrangement direction on the plastic body, and a conductive strip installed in the mounting groove. The mounting groove extends to the holding portion of the terminal in the depth direction. The conductive strip has a protrusion at a position corresponding to the grounding terminal, and the protrusion contacts the grounding terminal. The second conductive structure includes a metal sheet installed on the outside of the plastic body. A spring is stamped on one side of the metal sheet in the width direction. The spring is positioned corresponding to the grounding terminal, and the spring is pressed into the welding portion or contact portion of the grounding terminal. The third conductive structure includes a wire with multiple welding heads corresponding to the grounding terminals. The welding heads are welded to the welding portion or contact portion of the grounding terminal.

2. The Gen-Z high-speed electrical connector according to claim 1, characterized in that, The metal sheet of the second conductive structure has spring pieces stamped on both sides in the width direction. The spring pieces on both sides are respectively pressed and fitted with the welding part and contact part of a row of grounding terminals on the same side.

3. The Gen-Z high-speed electrical connector according to claim 1, characterized in that, The soldered parts and contact parts of all grounding terminals in the same row of terminals are connected in series by wires.

4. A Gen-Z high-speed electrical connector according to claim 1, characterized in that, The plastic body and the metal sheet have a pair of positioning posts and a pair of limiting bosses on their mating surfaces. The metal sheet has positioning holes and limiting holes corresponding to the positioning posts and limiting bosses.

5. A Gen-Z high-speed electrical connector according to claim 1, characterized in that, The high-speed electrical connector includes multiple terminal assemblies, which are mounted in a plastic housing. The plastic housing includes multiple cavities corresponding to the terminal assemblies. The interior of each cavity is provided with a guide groove, and the exterior of the plastic body is provided with a guide boss that mates with the guide groove.

6. A Gen-Z high-speed electrical connector according to claim 5, characterized in that, The metal sheet is located between the plastic body and the inner wall of the cavity.

7. A Gen-Z high-speed electrical connector according to claim 1, characterized in that, The conductive strip is made of conductive plastic, electroplated plastic, or metal. The conductive strip is pressed against the inner wall of the mounting groove by the convex ribs on both sides.

Images