High-speed electric connector

Abstract

The utility model provides a high-speed electric connector, which comprises an insulating body, and a plurality of metal terminals and a shielding piece I which are fixed in the insulating body, the middle part of the top surface of the insulating body is recessed downwards along the lengthwise direction to form a central slot, and two sides of the central slot are provided with terminal accommodating holes penetrating through the top surface and the bottom surface of the insulating body; shielding piece side face containing grooves in the lengthwise direction of the insulation body are formed in the two sides of the bottom face of the insulation body in the width direction, the metal terminals comprise a plurality of grounding terminals and a plurality of signal terminals, the first shielding piece comprises a bottom piece and two side pieces, the bottom piece is connected with the lengthwise bottom edges of the two side pieces, and the side pieces are fixed in the corresponding shielding piece side face containing grooves. A plurality of first grounding pieces are arranged on the lower edge of each side piece, a plurality of second grounding pieces are arranged on the two longitudinal long edges of the second shielding piece, and when two adjacent metal terminals are grounding terminals, the two grounding terminals make contact with the first grounding pieces and the second grounding pieces respectively. The high-speed electric connector can greatly improve the signal integrity of a high frequency band.

Description

Technical Field

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

[0002] In recent years, with the rapid development of high-speed serial signal graphics cards and the rise of server computers, PCIe graphics cards with 32G transmission rates have become increasingly widely used. In addition, the signal transmission capability of the original PCIe 5.0 connector has become insufficient due to the requirements of high-speed serial signal transmission in PCI-E.

[0003] Chinese patent CN202210537972.9 discloses a high-speed electrical connector, including an insulating body and multiple metal terminals and a shield fixed within the insulating body. The top surface of the insulating body is recessed in the center along its longitudinal direction to form a central slot. Terminal receiving holes are located on both sides of the central slot. The bottom surface of the insulating body has shield side receiving grooves along its longitudinal direction on both sides. The insulating body also has grounding plate receiving grooves at certain locations, located between the terminal receiving holes and the shield side receiving grooves, and communicating with both. The metal terminals include multiple grounding terminals and multiple signal terminals. The shield includes a bottom plate and two side plates, both of which are hollowed out. The bottom plate connects to the longitudinal bottom edges of the side plates. The side plates include a top edge, a bottom edge, and side connecting plates connecting the top and bottom edges. Both the top and bottom edges have absorbing plates, and the bottom edge also has a grounding plate.

[0004] This high-speed electrical connector significantly improves resonance at high frequencies, greatly reduces signal transmission loss, and substantially enhances signal integrity, meeting the demands of higher transmission rates. However, multiple cuts are formed on the side wall between the shielding recess and the terminal receiving hole of the connector's insulating body. Each terminal receiving hole connects to one of these cuts, and each cut slot connects to the shielding recess. Some of these cut slots are also grounding plate receiving slots. Because this side wall is cut into multiple slots, the strength of the insulating body is weakened. Furthermore, where two adjacent metal terminals are both grounding terminals, the two grounding terminals are connected to the grounding plate of the same shielding component, which affects signal integrity in the high-frequency band. Therefore, improvements are needed. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a high-speed electrical connector to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution used in this utility model is as follows:

[0007] A high-speed electrical connector includes an insulating body and a plurality of metal terminals and a shielding element 1 fixed within the insulating body. The top surface of the insulating body is recessed in the middle along the longitudinal direction to form a central slot. The central slot has terminal receiving holes on both sides that penetrate the top and bottom surfaces of the insulating body. The bottom surface of the insulating body has side receiving grooves along the longitudinal direction of the insulating body on both sides in the width direction. The metal terminals include a plurality of grounding terminals and a plurality of signal terminals. The shielding element 1 includes a uniform bottom plate and two side plates. The bottom plate is connected to the longitudinal bottom edge of the side plates. Each side plate is fixed in the corresponding side receiving groove of the shielding element. A plurality of grounding plates 1 are provided on the lower edge of each side plate. The connector also includes a shielding element 2 located below the bottom plate. A plurality of grounding plates 2 are provided on the two longitudinal sides of the shielding element 2. Where two adjacent metal terminals are both grounding terminals, the two grounding terminals are in contact with a grounding plate 1 and a grounding plate 2, respectively.

[0008] Furthermore, at a location with only one grounding terminal, the grounding terminal is in contact with one of the grounding plates, or with one of the grounding plates, or the grounding terminal is in contact with both the grounding plate one and the grounding plate two simultaneously.

[0009] Furthermore, a partition wall is formed between the side receiving groove of the shield and the terminal receiving hole. After the grounding piece is bent around the bottom of the partition wall, it extends into the terminal receiving hole from the bottom of the terminal receiving hole that receives the grounding terminal and contacts the grounding terminal.

[0010] Furthermore, the grounding piece one includes a bent portion located below the bottom of the partition wall. The outer end of the bent portion is connected to the lower edge of the side piece, and the inner end of the bent portion bends upward to form a contact arm. The inner surface of the upper end of the contact arm contacts the grounding terminal. The bent portion of the grounding piece one is located above the welding portion of the grounding terminal that contacts the contact arm of the grounding piece one.

[0011] Furthermore, the contact arm includes an inclined section and a vertical section. The lower end of the inclined section is connected to the inner end of the bent portion, the upper end of the inclined section is connected to the lower end of the vertical section, the inner surface of the vertical section is in contact with the holding portion of the grounding terminal, the lower end of the inclined section is away from the holding portion, and the lower end of the holding portion bends outward to form the welding portion.

[0012] Furthermore, a bottom connecting piece is provided between the grounding pieces corresponding to the grounding terminals of two adjacent metal terminals to connect the bottom piece and the side piece. Each side piece has a slot on both sides corresponding to the bottom connecting piece, and a connecting piece is formed between the two slots. The lower end of the connecting piece is bent inward to form a bent piece. Each bent piece is located below the bottom of the partition wall and is connected to one of the bending parts.

[0013] Furthermore, at least one end of the substrate along its longitudinal direction is provided with an end connecting piece to connect the substrate with the two side pieces.

[0014] Furthermore, each of the side plates has openings spaced apart along the longitudinal direction.

[0015] Furthermore, the longitudinal side of the grounding plate two self-shielding component two is bent upwards and extended.

[0016] Furthermore, the shielding component one and the shielding component two do not contact each other. The shielding component two has fixing holes at both ends in the longitudinal direction. The bottom of the insulating body has a fixing block that matches the fixing hole. The fixing block is used to fix the grounding piece two by heat fusion.

[0017] Compared with the prior art, the advantages of this utility model are mainly reflected in the following aspects: by having two grounding terminals contacting the first and second grounding plates respectively at two adjacent metal terminals that are both grounding terminals, the signal integrity of the high-frequency band can be greatly improved, meeting the requirements of higher transmission rates; by having the first grounding plate bend around the bottom of the partition wall and extend into the terminal receiving hole of the grounding terminal from the bottom of the terminal receiving hole to contact the grounding terminal, it is not necessary to cut the partition wall, thereby improving the strength of the insulation body; by positioning the bent part of the first grounding plate above the welded part of the grounding terminal that contacts the contact arm of the first grounding plate, if the first grounding plate falls, it will be supported by the grounding terminal, so there is no need to worry about the first grounding plate coming off and causing a short circuit in the signal terminal. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the high-speed electrical connector of this utility model. Figure 1 ;

[0019] Figure 2 This is a three-dimensional schematic diagram of the high-speed electrical connector of this utility model. Figure 2 ;

[0020] Figure 3 To remove Figure 2 A three-dimensional schematic diagram of the metal terminals in the diagram;

[0021] Figure 4 To remove Figure 3 A three-dimensional schematic diagram of grounding plate two in the diagram;

[0022] Figure 5 To remove Figure 3 A three-dimensional schematic diagram of grounding plate one in the diagram;

[0023] Figure 6 This is a partial schematic diagram of the insulating body;

[0024] Figure 7 This is a three-dimensional view of shielding component two;

[0025] Figure 8 This is a three-dimensional view of shielding component one;

[0026] Figure 9A top view of the shielding component;

[0027] Figure 10 This is a schematic diagram of the shielding component after it has been cut longitudinally in the middle.

[0028] Figure 11 A three-dimensional view of the combination of shielding component one and shielding component two;

[0029] Figure 12 This is a front view of shielding component one and shielding component two combined with the metal terminal;

[0030] Figure 13 This is a 3D view of the metal terminals;

[0031] Figure 14 This is a partial schematic diagram showing the connection between two adjacent metal terminals, both of which are grounded terminals, and shielding component one and shielding component two. Figure 1 ;

[0032] Figure 15 This is a partial schematic diagram showing the connection between two adjacent metal terminals, both of which are grounded terminals, and shielding component one and shielding component two. Figure 2 ;

[0033] Figure 16 This is a partial schematic diagram showing the connection between two adjacent metal terminals, both of which are grounded terminals, and shielding component one and shielding component two. Figure 3 ;

[0034] Figure 17 This is a partial schematic diagram showing the metal terminal, which is a grounding terminal, connected to shielding component one and shielding component two. Figure 1 In this diagram, one grounding terminal is in contact with both shielding component one and shielding component two.

[0035] Figure 18 This is a partial schematic diagram showing the metal terminal, which is a grounding terminal, connected to shielding component one and shielding component two. Figure 2 In the diagram, one grounding terminal is in contact with both shielding component one and shielding component two, while the other grounding terminal is in contact with shielding component two.

[0036] Figure 19 A side view showing the metal terminal combined with shielding component one and shielding component two;

[0037] Figure 20 This is a cross-sectional view of the high-speed electrical connector of this utility model at the contact point between the shielding component and the metal terminal;

[0038] Figure 21 This is a cross-sectional view of the high-speed electrical connector of this utility model at the contact point between the shield and the metal terminal.

[0039] Reference numerals: Insulating body 1, central slot 11, terminal receiving hole 12, shielding side receiving groove 13, partition wall 14, fixing block 15, metal terminal 2, contact part 21, elastic arm 22, holding part 23, welding part 24, guiding part 25, pressing part 26, extension part 27, shielding part one 3, bottom plate 31, end connecting piece 311, side plate 32, upper side 32a, lower side 32b, grounding piece one 321, bending part 321a, contact arm 321b, inclined section 321b1, vertical section 321b2, bottom connecting piece 322, slot 323, connecting piece 324, bending piece 325, opening 326, shielding part two 4, grounding piece two 41, fixing hole 42. Detailed Implementation

[0040] To facilitate a better understanding of the purpose, structure, features, and effects of this utility model, the present utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0041] like Figure 1-21 As shown, the high-speed electrical connector of this utility model includes an insulating body 1 and a plurality of metal terminals 2, a shielding component 3 and a shielding component 4 fixed within the insulating body 1.

[0042] The top surface of the insulating body 1 has a recessed central slot 11 along its longitudinal direction. Terminal receiving holes 12 are located on both sides of the central slot 11, penetrating both the top and bottom surfaces of the insulating body 1 and the two slot walls of the central slot 11. The bottom surface of the insulating body 1 has shielding side receiving grooves 13 along its longitudinal direction on both sides. A partition wall 14 separates the shielding side receiving grooves 13 from the terminal receiving holes 12. Fixing blocks 15 protrude from both ends of the bottom of the insulating body 1.

[0043] The metal terminal 2 includes multiple grounding terminals G and multiple signal terminals S, with the signal terminals S having the same structure as the grounding terminals G. Each metal terminal 2 includes a contact portion 21, an elastic arm 22, a holding portion 23, and a welding portion 24 connected sequentially from top to bottom. The upper end of the contact portion 21 is connected to the pressing portion 26 via a guiding portion 25, and the lower end of the holding portion 23 is connected to the welding portion 24 via an extension portion 27 (the lower end of the holding portion 23 bends outward to form the welding portion 24). The holding portion 23 is held within the terminal receiving hole 12 of the insulating body 1.

[0044] The shielding component 3 includes a base plate 31 and two side plates 32. The base plate 31 is located below the bottom of the insulating body 1 and is connected to the longitudinal bottom edge of the two side plates 32. One end of the base plate 31 in the longitudinal direction is provided with an end connecting piece 311 connecting the two side plates 32 and the base plate 31. The other end of the base plate 31 in the longitudinal direction has another end connecting piece 311 that is not connected to the base plate 31, and this other end connecting piece 311 connects to the two side plates 32.

[0045] The two side plates 32 have the same structure but are asymmetrical. The side plate 32 includes an upper side 32a and a lower side 32b. The lower side 32b is provided with a plurality of grounding plates 321, each grounding plate 321 contacting a corresponding grounding terminal G. The grounding plates 321 bend and extend into the insulating body 1 and contact the outer surface of the grounding terminal G facing the outside of the insulating body 1.

[0046] The grounding piece 321 is bent around the bottom of the partition wall 14 and extends into the terminal receiving hole 12 of the grounding terminal G from the bottom of the terminal receiving hole 12 to contact the grounding terminal G. The grounding piece 321 includes a bent portion 321a, which is located below the bottom of the partition wall 14. The outer end of the bent portion 321a is connected to the lower edge 32b of the side piece 32. The inner end of the bent portion 321a is bent upward to form a contact arm 321b. The inner surface of the upper end of the contact arm 321b contacts the outer surface of the grounding terminal G. The bent portion 321a of the grounding piece 321 is located above the welding portion 24 and the extension portion 27 of the grounding terminal G that contacts the contact arm 321b of the grounding piece 321.

[0047] The contact arm 321b includes an inclined section 321b1 and a vertical section 321b2. The lower end of the inclined section 321b1 is connected to the inner end of the bent portion 321a, the upper end of the inclined section 321b1 is connected to the lower end of the vertical section 321b2, the inner surface of the vertical section 321b2 is in contact with the outer surface of the holding portion 23 of the grounding terminal G, and the lower end of the inclined section 321b1 is away from the holding portion 23.

[0048] A bottom connecting piece 322 is provided between two adjacent metal terminals that are grounding terminals G, connecting the bottom piece 31 and the lower edge 32b of the side piece 32. An end connecting piece 311 is connected to the lower edge 32b of both side pieces 32. Each side piece 32 has a slot 323 on both sides corresponding to the bottom connecting piece 322, forming a connecting piece 324 between the two slots 323. The lower end of the connecting piece 324 is bent inward to form a bent piece 325. Each bent piece 325 is located below the bottom of the partition wall 14 and is integrally connected to a bent portion 321a. Each side piece 32 has openings 326 spaced apart along the longitudinal direction.

[0049] The second shielding component 4 is located below the base plate 31 of the first shielding component 3 and does not contact the first shielding component 3. Multiple grounding plates 41 are provided along the two longitudinal sides of the second shielding component 4, with each grounding plate 41 extending upwards from its longitudinal side. Fixing holes 42 are provided at both ends of the second shielding component 4 along its longitudinal direction. These fixing holes 42 mate with corresponding fixing blocks 15, which are then heat-fused to fix the grounding plates 4.

[0050] Where two adjacent metal terminals 2 are both grounding terminals G, the two grounding terminals G are in contact with a grounding piece 321 and a grounding piece 41 respectively. Where there is only one grounding terminal G, in some cases one grounding terminal G is in contact with a grounding piece 321, in some cases one grounding terminal G is in contact with a grounding piece 41, and in some cases one grounding terminal G is in contact with both grounding piece 321 and grounding piece 41 simultaneously.

[0051] Compared with the prior art, the beneficial effects of this utility model are mainly reflected in the following aspects: By having two grounding terminals G in contact with a grounding piece 321 and a grounding piece 41 respectively at two adjacent metal terminals 2 that are both grounding terminals G, the signal integrity of the high-frequency band can be greatly improved, meeting the requirements of higher transmission rates; By bending the grounding piece 321 around the bottom of the partition wall 14 and extending it into the terminal receiving hole 12 that accommodates the grounding terminal G from the bottom of the terminal receiving hole 12 to contact the grounding terminal G, it is not necessary to cut the partition wall 14, thereby improving the strength of the insulating body 1; By positioning the bent portion 321a of the grounding piece 321 above the welding portion 24 of the grounding terminal G that contacts the contact arm 321b of the grounding piece 321, if the grounding piece 321 falls, it will be supported by the grounding terminal G, so there is no need to worry about the grounding piece 321 coming off and causing a short circuit in the signal terminal.

[0052] In other embodiments, the end connecting pieces 311 at both ends of the substrate 31 connect the substrate 31 to the two side pieces 32.

[0053] In other embodiments, shielding element 3 and shielding element 4 may also be in contact with each other.

[0054] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A high-speed electrical connector, comprising an insulating body and a plurality of metal terminals and a shielding element fixed within the insulating body, wherein the top surface of the insulating body is recessed in the longitudinal direction to form a central slot, and terminal receiving holes penetrating the top and bottom surfaces of the insulating body are located on both sides of the central slot; the bottom surface of the insulating body has shielding element side receiving grooves along the longitudinal direction of the insulating body on both sides in the width direction; the metal terminals include a plurality of grounding terminals and a plurality of signal terminals; the shielding element includes a uniform bottom plate and two side plates, the bottom plate being connected to the longitudinal bottom edges of the side plates; each side plate being fixed within a corresponding shielding element side receiving groove; and a plurality of grounding plates are provided on the lower edge of each side plate, characterized in that: It also includes a shielding component two located below the substrate. Multiple grounding plates two are provided on the two longitudinal sides of the shielding component two. At the locations where two adjacent metal terminals are both grounding terminals, the two grounding terminals are in contact with one of the grounding plates one and one of the grounding plates two, respectively.

2. The high-speed electrical connector according to claim 1, characterized in that: At a location with only one grounding terminal, the grounding terminal is in contact with either one of the grounding plates or one of the grounding plates, or the grounding terminal is in contact with both the grounding plate one and the grounding plate two simultaneously.

3. The high-speed electrical connector according to claim 1 or 2, characterized in that: The shielding component has a partition wall between the side receiving groove and the terminal receiving hole. After the grounding piece is bent around the bottom of the partition wall, it extends into the terminal receiving hole from the bottom of the terminal receiving hole that receives the grounding terminal and contacts the grounding terminal.

4. The high-speed electrical connector according to claim 3, characterized in that: The grounding plate includes a bent portion located below the bottom of the partition wall. The outer end of the bent portion is connected to the lower edge of the side plate, and the inner end of the bent portion bends upward to form a contact arm. The inner surface of the upper end of the contact arm contacts the grounding terminal. The bent portion of the grounding plate is located above the welding portion of the grounding terminal that contacts the contact arm of the grounding plate.

5. The high-speed electrical connector according to claim 4, characterized in that: The contact arm includes an inclined section and a vertical section. The lower end of the inclined section is connected to the inner end of the bent portion, the upper end of the inclined section is connected to the lower end of the vertical section, the inner surface of the vertical section is in contact with the holding portion of the grounding terminal, the lower end of the inclined section is away from the holding portion, and the lower end of the holding portion bends outward to form the welding portion.

6. The high-speed electrical connector according to claim 4, characterized in that: A bottom connecting piece is provided between the grounding pieces at the corresponding grounding points of two adjacent metal terminals that are both grounding terminals to connect the bottom piece and the side piece. Each side piece has a slot on both sides corresponding to the bottom connecting piece. A connecting piece is formed between the two slots. The lower end of the connecting piece is bent inward to form a bent piece. Each bent piece is located below the bottom of the partition wall and is connected to one of the bending parts.

7. The high-speed electrical connector according to claim 1 or 2, characterized in that: At least one end of the substrate along its longitudinal direction is provided with an end connecting piece to connect the substrate to the two side pieces.

8. The high-speed electrical connector according to claim 1 or 2, characterized in that: Each of the side plates has openings spaced apart along its longitudinal direction.

9. The high-speed electrical connector according to claim 1 or 2, characterized in that: The grounding plate two and the self-shielding component two are formed by bending and extending the longitudinal side upwards.

10. The high-speed electrical connector according to claim 1 or 2, characterized in that: The shielding component one and the shielding component two are not in contact. The shielding component two has fixing holes at both ends in the longitudinal direction. The bottom of the insulating body has a fixing block that matches the fixing hole. The fixing block is used to fix the grounding piece two by heat fusion.

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