MCIO high-frequency high-speed electric connector

Abstract

The invention relates to the field of electric connectors, and provides an MCIO high-frequency and high-speed electric connector which comprises a plastic body, a terminal assembly installed in the plastic body and a metal shell installed on the outer side of the plastic body, the terminal assembly comprises an upper terminal assembly, a lower terminal assembly and conductive plastic, and the front side face and the rear side face of the conductive plastic are each provided with a protruding point. And the salient points are respectively contacted with the grounding terminals of the upper terminal assembly and the lower terminal assembly. The conductive plastic is arranged between the upper terminal assembly and the lower terminal assembly, the salient points on the conductive plastic are in contact with the grounding terminals of the upper terminal assembly and the lower terminal assembly, and the same terminal corresponds to two or more salient points, so that all the grounding terminals of the whole connector are ensured to be connected in series; interference signals generated in the high-frequency transmission process can be well reduced, and the requirement for high-frequency and high-speed development of the electric connector can be better met.

Description

Technical Field

[0001] This invention relates to the field of electrical connectors, and more specifically to an MCIO high-frequency high-speed electrical connector. Background Technology

[0002] MCIO (Multi-Channel Input / Output) technology is typically used in data centers, but its applications are gradually expanding to other fields. It's primarily used for high-bandwidth, low-latency data transmission in servers, storage systems, and network devices, supporting AI training, cloud computing, and big data analytics. Common technical forms include PCIe multi-channel, NVMe-oF (a multi-channel based storage protocol), or dedicated interfaces (such as NVIDIA's GPUDirect). A single server may integrate dozens of MCIO channels, and the annual demand from global data centers can reach millions of interface modules. Each high-end desktop computer may contain 2-4 multi-channel interfaces, and about 30% of the approximately 300 million desktop computers shipped globally each year utilize this technology.

[0003] As one of MCIO's common products, the main challenges faced by MCIO high-frequency and high-speed electrical connectors are the increased hardware complexity and cost resulting from high-frequency signal wiring, as well as the increased requirements for energy efficiency and stability due to high-density transmission. Summary of the Invention

[0004] To meet the demands of the rapid development of MCIO, ensure the stability of the electrolyzer, and solve problems such as signal interference during high-density transmission, this invention provides a high-frequency, high-speed electrical connector for MCIO.

[0005] The technical solution adopted in this invention is as follows: A high-frequency, high-speed MCIO electrical connector includes a plastic body, a terminal assembly installed inside the plastic body, and a metal housing installed outside the plastic body. The terminal assembly includes an upper terminal assembly, a lower terminal assembly, and conductive plastic. The upper terminal assembly includes a row of upper contact terminals and an upper plastic part injection-molded outside the row of upper contact terminals. The lower terminal assembly includes a row of lower contact terminals and a lower plastic part injection-molded outside the row of lower contact terminals. The upper and lower plastic parts are connected and fixed by a connecting structure. The conductive plastic is installed between the upper and lower terminal assemblies. The conductive plastic has protrusions on its front and rear sides, and the protrusions contact the grounding terminals of the upper and lower terminal assemblies, respectively.

[0006] Furthermore, the conductive plastic includes a horizontal part and a vertical part. The conductive plastic is installed at the inner corner of the plastic bottom of the upper terminal assembly. The front and rear sides of the vertical part are respectively provided with multiple lower protrusions, and the lower protrusions are in contact with the grounding terminal of the upper contact terminal and the lower contact terminal.

[0007] Furthermore, the top surface of the horizontal portion of the conductive plastic is provided with multiple upper protrusions, which are in contact with the grounding terminal in the upper contact terminal.

[0008] Furthermore, the bottom of the upper plastic part is provided with two positioning posts, and the conductive plastic is provided with two positioning holes that cooperate with the positioning posts.

[0009] Furthermore, the bottom of the conductive plastic is provided with multiple dovetail grooves, and the lower plastic part is provided with dovetail bosses that cooperate with the multiple dovetail grooves.

[0010] Furthermore, the connection structure is a dovetail structure, with multiple dovetail bosses on the bottom of the upper plastic part and multiple dovetail grooves on the lower plastic part that mate with the dovetail bosses.

[0011] Furthermore, the end faces of both ends of the lower plastic body are provided with limiting protrusions, the limiting protrusions are provided with transverse and longitudinal stepped surfaces, and the two ends of the inner side of the plastic body are provided with positioning grooves that cooperate with the limiting protrusions.

[0012] Furthermore, the top surface of the upper plastic part and the bottom surface of the lower plastic part are respectively provided with a plurality of protruding ribs evenly distributed along the length direction, and the protruding ribs are extruded and fitted with the inner side of the plastic body.

[0013] After adopting the above technical solutions, the beneficial effects of the present invention are as follows: By using in-mold molding, a plastic body is formed on the outside of the terminal, ensuring the terminal's precision. By installing conductive plastic between the upper and lower terminal assemblies, the protrusions on the conductive plastic contact the grounding terminals of the upper and lower terminal assemblies. Each terminal has two or more protrusions, ensuring that all grounding terminals of the entire connector are connected in series. This effectively reduces interference signals generated during high-frequency transmission and better meets the requirements of the high-frequency, high-speed development of electrical connectors.

[0014] The conductive plastic is positioned below the upper plastic body using positioning posts and hard interference. The conductive plastic and the lower plastic body are fixedly installed using a dovetail structure. This ensures stable installation and stable contact between the conductive plastic and the terminal, thus improving the stability of the electrical connector. Attached Figure Description

[0015] Figure 1 This is an exploded view of an electrical connector.

[0016] Figure 2 This is an exploded view of the terminal assembly.

[0017] Figure 3 This is a cross-sectional view of the electrical connector.

[0018] In the diagram: plastic body 1, terminal assembly 2, upper terminal assembly 21, upper contact terminal 211, upper plastic part 212, positioning post 213, dovetail boss 214, lower terminal assembly 22, lower contact terminal 221, lower plastic part 222, dovetail boss 223, dovetail groove 224, limiting protrusion 225, conductive plastic 23, upper protrusion 231, lower protrusion 232, dovetail groove 233, metal housing 3, mounting foot 31. Detailed Implementation

[0019] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings: like Figure 1 As shown, an MCIO high-frequency, high-speed electrical connector comprises a plastic body 1, a terminal assembly 2 installed within the plastic body, and a metal housing 3 installed on the outside of the plastic body 1. This application uses a horizontal clamp-type electrical connector as an example.

[0020] Terminal assembly 2 consists of three parts: upper terminal assembly 21, lower terminal assembly 22, and conductive plastic 23. Both upper terminal assembly 21 and lower terminal assembly 22 are formed in-mold, with the plastic body molded outside a row of contact terminals. Upper terminal assembly 21 consists of a row of upper contact terminals 211 and an upper plastic part 212 injection-molded outside the row of upper contact terminals. Lower terminal assembly 22 includes a row of lower contact terminals 221 and a lower plastic part 222 injection-molded outside the row of lower contact terminals. Because it is a clamp-type electrical connector, the contact terminals are welded to the contact portion at a 90° angle, therefore the bent portion of the contact terminal is a 90-degree arc bend. Upper plastic part 212 and lower plastic part 222 are strip-shaped plastic bodies formed in the bent portion, each including a horizontal portion and a vertical portion. The horizontal and vertical portions form a right-angled stepped surface.

[0021] The terminal assembly is installed as follows: conductive plastic 23 is installed between the upper terminal assembly 21 and the lower terminal assembly 22. Conductive plastic 23 also includes a horizontal part and a vertical part. The conductive plastic is installed at the inner corner step of the upper plastic part 212 of the upper terminal assembly 21. Two positioning posts 213 are provided at the bottom of the horizontal part of the upper plastic part 212. Two positioning holes with interference fit to the positioning posts 213 are provided on the conductive plastic 23. The two outer surfaces of the conductive plastic 23 mate with the stepped surface of the upper plastic part.

[0022] Multiple upward protrusions 231 are provided on the top surface of the horizontal portion of the conductive plastic 23. These upward protrusions 231 engage with the upper section of the bent portion of the grounding terminal in the upper contact terminal 211. Each upward protrusion 231 is divided into two sections along its length, forming two surface contacts to ensure effective contact. Multiple downward protrusions 232 are provided on the front and rear sides of the vertical portion of the conductive plastic 23. These downward protrusions 232 engage with the lower section of the bent portion of the grounding terminal in the upper contact terminal 211 and the lower contact terminal 221. For the upper contact terminal 211, at least two small sections of the upward protrusions 231 and one downward protrusion 231 make contact, effectively preventing "seesaw" behavior in cases of insufficient precision. At least one contact point ensures that all grounding terminals are connected in series. For the lower contact terminal 221, at least one downward protrusion makes contact; alternatively, the same scheme as the upper contact terminal can be used, with multiple protrusions making contact.

[0023] Two sets of dovetail grooves 233 are provided at the bottom of the horizontal portion of the conductive plastic 23, and dovetail bosses 223 that mate with the two sets of dovetail grooves are provided on the top surface of the horizontal portion of the lower plastic part 222. The conductive plastic 23 and the lower plastic part 222 are fixed by the dovetail fit, ensuring stable contact between the conductive plastic 23 and the grounding terminal in the lower contact terminal. Three dovetail bosses 214 are provided on the outer edge of the bottom of the horizontal portion of the upper plastic part 212, and three dovetail grooves 224 that mate with the dovetail bosses are provided on the top surface of the vertical portion of the lower plastic part 222. The upper and lower terminal assemblies are further fixed by the dovetail structure, improving the stability and reliability of the electrical connector.

[0024] Limiting protrusions 225 are provided on the end faces of both ends of the lower plastic body 222. The limiting protrusions 225 are irregularly shaped and have horizontal and vertical stepped surfaces. Positioning grooves that cooperate with the limiting protrusions are provided on both ends of the inner side of the plastic body 1. Through the cooperation between the limiting protrusions and the positioning grooves, the terminal assembly can be installed and positioned in both the horizontal and vertical directions. Multiple ribs are provided on the top and side end faces of the upper plastic part, and on the bottom and side end faces of the lower plastic part, respectively. The terminal assembly is fixed in the plastic body by the pressing and cooperation between the ribs and the inner side of the plastic body.

[0025] The metal casing 3 is an iron casing that fits over the outside of the plastic body 1, covering the top and side faces of the plastic body. The iron casing is fixed to the plastic body by engaging with protrusions on the outside of the plastic body through mounting holes on three surfaces. The bottom of the plastic body 1 has positioning feet, and the bottom of each of the two sides of the iron casing has two mounting feet 31, each with a nail hole. These mounting feet allow for secure mounting to the printed circuit board and provide locking force.

Claims

1. An MCIO high-frequency high-speed electrical connector, comprising a plastic body, a terminal assembly installed within the plastic body, and a metal housing installed on the outside of the plastic body, characterized in that, The terminal assembly includes an upper terminal assembly, a lower terminal assembly, and conductive plastic. The upper terminal assembly includes a row of upper contact terminals and an upper plastic part injection-molded on the outside of the row of upper contact terminals. The lower terminal assembly includes a row of lower contact terminals and a lower plastic part injection-molded on the outside of the row of lower contact terminals. The upper plastic part and the lower plastic part are connected and fixed by a connecting structure. The conductive plastic is installed between the upper terminal assembly and the lower terminal assembly. The conductive plastic has protrusions on its front and rear sides, and the protrusions are in contact with the grounding terminals of the upper and lower terminal assemblies, respectively.

2. The MCIO high-frequency high-speed electrical connector according to claim 1, characterized in that, The conductive plastic includes a horizontal part and a vertical part. The conductive plastic is installed at the inner corner of the plastic bottom of the upper terminal assembly. The front and rear sides of the vertical part are respectively provided with multiple lower protrusions. The lower protrusions are in contact with the grounding terminal of the upper contact terminal and the lower contact terminal.

3. The MCIO high-frequency high-speed electrical connector according to claim 1, characterized in that, The top surface of the horizontal part of the conductive plastic is provided with multiple upper protrusions, and the multiple upper protrusions are in contact with the grounding terminal in the upper contact terminal.

4. The MCIO high-frequency high-speed electrical connector according to claim 1, characterized in that, The bottom of the upper plastic part is provided with two positioning posts, and the conductive plastic is provided with two positioning holes that cooperate with the positioning posts.

5. The MCIO high-frequency high-speed electrical connector according to claim 1, characterized in that, The bottom of the conductive plastic is provided with multiple dovetail grooves, and the lower plastic part is provided with dovetail bosses that cooperate with the multiple dovetail grooves.

6. The MCIO high-frequency high-speed electrical connector according to claim 1, characterized in that, The connection structure is a dovetail structure, with multiple dovetail bosses on the bottom of the upper plastic part and multiple dovetail grooves on the lower plastic part that mate with the dovetail bosses.

7. The MCIO high-frequency high-speed electrical connector according to claim 1, characterized in that, The end faces of both ends of the lower plastic body are provided with limiting protrusions, and the limiting protrusions are provided with transverse and longitudinal stepped surfaces. The two ends of the inner side of the plastic body are provided with positioning grooves that cooperate with the limiting protrusions.

8. The MCIO high-frequency high-speed electrical connector according to claim 1, characterized in that, The top surface of the upper plastic part and the bottom surface of the lower plastic part are respectively provided with a plurality of raised ribs evenly distributed along the length direction, and the raised ribs are extruded and fitted with the inner side of the plastic body.

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