High-speed expansion bus connector

Abstract

The utility model provides a high-speed expansion bus connector, which comprises an insulating body, and a plurality of metal terminals and a shielding piece 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, two sides of the central slot are provided with terminal accommodating holes which penetrate through the top surface and the bottom surface of the insulating body, and the terminal accommodating holes are communicated with the shielding piece. 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, partition walls are arranged between the shielding piece side face containing grooves and the terminal containing holes, the metal terminals comprise a plurality of grounding terminals and a plurality of signal terminals, the shielding piece comprises a bottom piece and two side pieces, and the bottom piece is connected with the lengthwise bottom edges of the two side pieces. Each side piece is fixed in the corresponding shielding piece side face containing groove, the lower edge of each side piece is provided with a grounding piece in contact with the grounding terminal at the position corresponding to the grounding terminal, and the grounding piece is bent to bypass the bottom of the partition wall and then extends into the terminal containing hole from the bottom of the terminal containing hole containing the grounding terminal to be in contact with the grounding terminal. According to the high-speed expansion bus connector, the strength of the insulating body is improved.

Description

Technical Field

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

[0002] Electronic and IT products demand increasingly faster transmission speeds, requiring both product upgrades and compatibility with older specifications. For example, the physical interface standard for PCIe slot connectors remains unchanged between PCIe 4.0 and PCIe 5.0; however, PCIe 5.0 offers double the transmission speed. This necessitates more stringent connector design requirements to meet the demands of this increased speed.

[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 slots are cut into 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 slot, and each slot connects to the shielding recess. Some of these slots are also grounding plate receiving slots. Because this side wall is cut into multiple slots, the strength of the insulating body is weakened. Therefore, improvements are needed. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a high-speed expansion bus 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 expansion bus connector includes 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 longitudinal direction to form a central slot. 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 shield side receiving grooves along the longitudinal direction of the insulating body on both sides. A partition wall is formed between the shield side receiving grooves and the terminal receiving holes. The metal terminals include multiple ground terminals and multiple signal terminals. The shield includes a 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 shield side receiving groove. A grounding plate is provided at the bottom edge of each side plate at the corresponding position of each ground terminal, which contacts the ground terminal. The grounding plate is bent around the bottom of the partition wall and extends into the terminal receiving hole from the bottom of the terminal receiving hole to contact the ground terminal.

[0008] Furthermore, 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 welded portion of the grounding terminal that contacts the contact arm of the grounding plate.

[0009] 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.

[0010] Furthermore, each of the side plates is connected to its upper and lower sides by a side connecting plate, and both the upper and lower sides have absorbing plates.

[0011] Furthermore, a bottom connecting piece is provided between the grounding pieces at the corresponding locations of two adjacent metal terminals that are both grounding terminals to connect the bottom piece and the side piece.

[0012] Furthermore, a side connecting piece is provided between the upper and lower sides at a location corresponding to only one signal terminal; two side connecting pieces are provided between the upper and lower sides at locations where two adjacent metal terminals are both ground terminals, and the lower end of each side connecting piece is connected to the outer end of the bent portion.

[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, the absorbing sheet is provided on the upper and lower sides at the locations where the two adjacent terminals are both signal terminals.

[0015] Furthermore, the upper and lower absorbing sheets are not directly connected, but are indirectly connected through the upper and side connecting sheets and the lower sheet.

[0016] Furthermore, the absorber is hollowed out in a ring shape; the width of the absorber along the longitudinal direction of the shield does not exceed the distance between the two opposite sides of the two signal terminals.

[0017] Compared with the prior art, the advantages of this utility model are mainly reflected in the following aspects: After the grounding piece is bent around the bottom of the partition wall, it extends into the terminal receiving hole of the grounding terminal from the bottom of the terminal receiving hole and contacts the grounding terminal, without the need to cut the partition wall, thereby improving the strength of the insulation body; by placing the bent part of the grounding piece above the welding part of the grounding terminal that contacts the contact arm of the grounding piece, if the grounding piece falls, it will be supported by the grounding terminal, without worrying about the grounding piece coming off and causing a short circuit in the signal terminal; by designing absorbing plates on the upper and lower sides, the upper and lower absorbing plates are not directly connected to conduction but are indirectly connected to conduction through the upper and side connecting plates and the lower side, and the width of the absorbing plate along the longitudinal direction of the shield does not exceed the distance between the two opposite sides of the two signal terminals, which improves the resonance in the high-frequency state, greatly reduces the signal transmission loss, and greatly improves the signal integrity performance of the electrical connector, which can meet the requirements of higher transmission rates. Attached Figure Description

[0018] Figure 1 This is an exploded perspective view of the high-speed expansion bus connector of this utility model.

[0019] Figure 2 A three-dimensional schematic diagram of the high-speed expansion bus connector assembly;

[0020] Figure 3 A three-dimensional schematic diagram of the combination of the insulating body and the shielding component;

[0021] Figure 4 This is a three-dimensional exploded view of the insulating body and the shielding component;

[0022] Figure 5 This is a magnified view of a portion of the insulating body;

[0023] Figure 6 This is a top view of the shielding component;

[0024] Figure 7 This is a 3D view of the shielding component;

[0025] Figure 8 This is a partial schematic diagram of the shielding component after it has been cut longitudinally in the middle.

[0026] Figure 9 This is a 3D view of the metal terminals;

[0027] Figure 10 The relationship between metal terminals and shielding Figure 1 ;

[0028] Figure 11 The relationship between metal terminals and shielding Figure 2 ;

[0029] Figure 12 The relationship between metal terminals and shielding Figure 3 ;

[0030] Figure 13 This is a cross-sectional view of the insulator body and the shielding component when they are combined.

[0031] Figure 14 This is a cross-sectional view of the metal terminal combined with the insulating body and shielding.

[0032] Reference numerals: Insulating body 1, central slot 11, terminal receiving hole 12, shielding side receiving groove 13, partition wall 14, 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 3, bottom plate 31, end connecting piece 311, side plate 32, upper side 32a, lower side 32b, side connecting piece 32c, grounding piece 321, bending part 321a, contact arm 321b, inclined section 321b1, vertical section 321b2, bottom connecting piece 322, absorbing plate 323, iron foot 4. Detailed Implementation

[0033] 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.

[0034] like Figure 1-14 As shown, the high-speed expansion bus connector of this utility model includes an insulating body 1 and a plurality of metal terminals 2 and a shielding component 3 fixed within the insulating body 1.

[0035] The top surface of the insulating body 1 is recessed in the longitudinal direction to form a central slot 11. 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. 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. Iron feet 4 are fixed to the bottom of both ends of the insulating body 1 along its longitudinal direction, used to fix the insulating body 1 onto the circuit board.

[0036] 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.

[0037] 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 is connected to the two side plates 32.

[0038] The two side plates 32 have the same structure but are asymmetrical. Each side plate 32 includes an upper side 32a, a lower side 32b, and a side connecting plate 32c connecting the upper side 32a and the lower side 32b. A grounding plate 321 is provided at each corresponding position of the grounding terminal G on the lower side 32b, and the grounding plate 321 contacts the grounding terminal G. The grounding plate 321 bends and extends inwards into the insulating body 1 and contacts the outer surface of the grounding terminal G facing outwards from the insulating body 1.

[0039] 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.

[0040] 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.

[0041] A side connecting piece 32c is provided between the upper side 32a and the lower side 32b at a location corresponding to only one signal terminal S. Two side connecting pieces 32c are provided between the upper side 32a and the lower side 32b at locations where two adjacent metal terminals are grounding terminals G. The lower end of each side connecting piece 32c is connected to the outer end of the bent portion 321a. A bottom connecting piece 322 is provided between the grounding pieces 321 at locations where two adjacent metal terminals are grounding terminals G, connecting the bottom piece 31 and the lower side 32b of the side piece 32. An end connecting piece 311 is connected to the lower side 32b of both side pieces 32.

[0042] Both the upper side 32a and the lower side 32b have absorbing sheets 323, which are positioned at corresponding locations of the two signal terminals S. The absorbing sheets 323 on the upper side 32a and the lower side 32b are not directly connected; instead, they are indirectly connected via the upper side 32a, the side connecting piece 32c, and the lower side 32b. The absorbing sheet 323 is hollowed out in a ring shape; the width D1 of the absorbing sheet 323 along the longitudinal direction of the shielding member 3 does not exceed the distance D2 between the two opposite sides of the two signal terminals S.

[0043] Compared with the prior art, the main advantages of this utility model are as follows: After the grounding piece 321 is bent around the bottom of the partition wall 14, it extends into the terminal receiving hole 12 of the grounding terminal G from the bottom and contacts the grounding terminal G, eliminating the need to cut the partition wall 14, thus 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, eliminating concerns about the grounding piece 321 coming off and causing a short circuit in the signal terminal S; by designing the bottom piece 31 to connect the two side pieces 32, and designing the side pieces 32 as an upper edge 32a and a lower edge 32b, the design of the side pieces... The face connecting piece 32c connects the upper side 32a and the lower side 32b. Absorbing pieces 323 are designed on the upper side 32a and the lower side 32b, and a grounding piece 321 is designed on the lower side 32b. A bottom connecting piece 322 is designed. By changing the contact position between the grounding piece 321 and the grounding terminal G, the absorbing pieces 323 on the upper side 32a and the lower side 32b are not directly connected but indirectly connected through the upper side 32a, the side connecting piece 32c, and the lower side 32b. Furthermore, by ensuring that the width of the absorbing piece 323 along the longitudinal direction of the shielding member 3 does not exceed the distance between the two opposite sides of the two signal terminals S, resonance at high frequencies is improved, signal transmission loss is greatly reduced, and the signal integrity performance of the electrical connector is significantly improved, meeting the requirements of higher transmission rates.

[0044] 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.

[0045] 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 expansion bus connector comprising an insulating body and a plurality of metal terminals and a shield fixed in the insulating body, a central slot is formed in the middle of the top surface of the insulating body and is concave downward along the longitudinal direction, terminal receiving holes are formed through the top and bottom surfaces of the insulating body on both sides of the central slot, shield side receiving grooves are formed along the longitudinal direction of the insulating body on both sides of the bottom surface of the insulating body in the width direction, a partition wall is formed between the shield side receiving grooves and the terminal receiving holes, the metal terminals comprise a plurality of ground terminals and a plurality of signal terminals, the shield comprises a bottom sheet and two side sheets, the longitudinal bottom edges of the two side sheets are connected by the bottom sheet, each side sheet is fixed in the corresponding shield side receiving groove, and a ground sheet is arranged on the lower edge of each side sheet at the corresponding position of each ground terminal to contact the ground terminal, characterized in that: The grounding sheet is bent around the bottom of the partition wall, and the grounding sheet extends into the terminal accommodating hole from the bottom of the terminal accommodating hole to contact the grounding terminal.

2. The high speed expansion bus connector of claim 1, wherein: The grounding sheet comprises a bent portion below the bottom of the partition wall, the outer end of the bent portion is connected with the lower edge of the side sheet, the inner end of the bent portion is bent upward to form a contact arm, the inner surface of the upper end of the contact arm contacts the grounding terminal, and the bent portion of the grounding sheet is above the welding portion of the grounding terminal contacting the contact arm of the grounding sheet.

3. The high speed expansion bus connector of claim 2, wherein: The contact arm comprises an inclined segment and a vertical segment, the lower end of the inclined segment is connected with the inner end of the bent portion, the upper end of the inclined segment is connected with the lower end of the vertical segment, the inner surface of the vertical segment contacts the holding portion of the grounding terminal, the lower end of the inclined segment is away from the holding portion, and the lower end of the holding portion is bent outward to form the welding portion.

4. The high speed expansion bus connector of claim 2 or 3, wherein: The upper edge and the lower edge of each side sheet are connected with a side connecting sheet, and the upper edge and the lower edge are provided with a wave-absorbing sheet.

5. The high speed expansion bus connector of claim 4, wherein: A bottom connecting sheet is arranged between the grounding sheets corresponding to the two adjacent grounding terminals to connect the bottom sheet with the side sheets.

6. The high speed expansion bus connector of claim 4, wherein: The upper edge and the lower edge are provided with one side connecting sheet at the position corresponding to one signal terminal, and the upper edge and the lower edge are provided with two side connecting sheets at the position corresponding to two adjacent grounding terminals, and the lower end of each side connecting sheet is connected with the outer end of the bent portion.

7. The high speed expansion bus connector of claim 4, wherein: At least one end of the bottom sheet in the longitudinal direction is provided with an end connecting sheet to connect the bottom sheet with the two side sheets.

8. The high speed expansion bus connector of claim 4, wherein: The upper edge and the lower edge are provided with the wave-absorbing sheet at the position corresponding to two signal terminals.

9. The high speed expansion bus connector of claim 8, wherein: The wave-absorbing sheets of the upper edge and the lower edge are not directly connected and are indirectly connected through the upper edge, the side connecting sheet and the lower edge.

10. The high speed expansion bus connector of claim 8, wherein: The wave-absorbing sheet is hollowed in a ring shape, and the width of the wave-absorbing sheet along the longitudinal direction of the shielding member is not more than the interval between the two opposite side edges of two signal terminals.

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