Electrical connector, transmission member of an electrical connector and printed circuit board

Abstract

The utility model provides a kind of electric connector, the transmission component of electric connector and printed circuit board.The electric connector includes: insulating shell, insulating shell has along the length direction of insulating shell extends the recess;Multiple transmission components, including transmission piece and the shield shell of accommodating transmission piece;Multiple transmission components are arranged on the two inner walls of recess in the length direction of insulating shell, constitute insertion space.

Description

Technical Field

[0001] This disclosure generally relates to the technical field of electrical connectors, and more specifically, to an electrical connector, a transmission component of the electrical connector, and a printed circuit board. Background Technology

[0002] This section provides background information related to the present invention, but such information does not necessarily constitute prior art.

[0003] In related technologies, electrical connectors are primarily used to connect two or more electronic devices together to provide a reliable electrical connection. Electrical connectors are used in various ways within electronic systems to connect different electronic systems together. For example, printed circuit boards (PCBs) can be electrically coupled using one or more electrical connectors to allow for the manufacture of individual PCBs for a specific purpose, and to electrically couple these individual PCBs with connectors to form the desired system. The application areas of electrical connectors are very broad, including but not limited to, electronic products, communication technologies, vehicles, and aerospace.

[0004] As electronic systems become smaller, faster, and more functionally complex, both the number of circuits and the operating frequency in a given area increase. Therefore, there is a need for electrical connectors used to interconnect these electronic systems with high-density electrical contacts (e.g., a pitch of less than 1 mm, where the pitch is the distance between adjacent electrical contacts within the connector) to transmit data at high speeds without significantly distorting the data signal (e.g., crosstalk and / or interference).

[0005] Therefore, there is an urgent need for a compact, robust, high-density electrical connector that can provide reliable mechanical and electrical connections while ensuring high-speed data transmission. Utility Model Content

[0006] This utility model relates to an electrical connector, a transmission component of the electrical connector, and a printed circuit board.

[0007] The first aspect of this utility model provides an electrical connector, which includes: an insulating housing having a groove extending along the length direction of the insulating housing; a plurality of transmission members, including a transmission member and a shielding shell for receiving the transmission member; the plurality of transmission members are arranged on two inner walls of the groove along the length direction of the insulating housing to form an insertion space.

[0008] Optionally, the plurality of transmission components include: a plurality of long transmission components, including a long transmission element and a long shielding shell accommodating the long transmission element; and a plurality of short transmission components, including a short transmission element and a short shielding shell accommodating the short transmission element; the long transmission components and the short transmission components constitute a transmission component group in such a way that the long transmission components cover the short transmission components.

[0009] Optionally, the long transmission member and the short transmission member may each include a mating part and a tail part, respectively.

[0010] Alternatively, the tail portion can be configured to be soldered to pads using surface mount technology (SMT).

[0011] Alternatively, the tail portion can be configured to be connected to pads via ball grid array (BGA) technology.

[0012] Optionally, the contact surface of the tail can be a flat quadrilateral shape for soldering to the pads using surface mount technology.

[0013] Optionally, the long shield and the short shield may each have a mating part protrusion and a tail protrusion, respectively.

[0014] Optionally, the cross-section of the long shielding shell along the height direction can be L-shaped, and the cross-section of the short shielding shell along the height direction can be elongated. The short shielding shell can be placed in the L-shaped recess of the long shielding shell that forms a transmission component group with the short shielding shell.

[0015] Optionally, the electrical connector may also include a loss element disposed at the bottom of the recess, the loss element being used to connect the short shield shells together.

[0016] Optionally, the electrical connector may include a low-speed signal section and a high-speed signal section separate from the low-speed signal section, the high-speed signal section including multiple long transmission components and multiple short transmission components.

[0017] Optionally, the insulating housing may be provided with locking elements for fixing the electrical connector and receiving grooves for inserting the locked elements on both sides along the length of the insulating housing.

[0018] Optionally, the insulating housing may also include a stop, which is disposed on the outermost side of the insulating housing to cover and secure the long shielding shell.

[0019] Optionally, the long transmission component may include a first long transmission component and a second long transmission component, and the short transmission component may include a first short transmission component and a second short transmission component.

[0020] Optionally, the distance between the center line of the first long transmission member in the length direction and the center line of the second long transmission member in the length direction can be 0.6 mm; the distance between the center line of the first short transmission member in the length direction and the center line of the second short transmission member in the length direction can be 0.6 mm.

[0021] Optionally, the spacing between the center lines of adjacent long transmission components along their length direction can be 2.10 mm, and the spacing between the center lines of adjacent short transmission components along their length direction can also be 2.10 mm.

[0022] Optionally, the long shielding shell and the short shielding shell may each include a front shell and a rear shell, with a mating part protrusion formed in the front shell and a tail protrusion formed at a position corresponding to the tail after the front shell and the rear shell are combined.

[0023] Optionally, the long transmission member and the short transmission member may each include a transmission member positioning block, which is penetrated and positioned by the long transmission member and the short transmission member, respectively.

[0024] Optionally, the long transmission member and the short transmission member may also include encapsulation components, which are disposed at the tail protrusion and are respectively penetrated by the tail.

[0025] Optionally, grounding pins may be formed on the edges of the front housing and / or rear housing that form the tail protrusion.

[0026] Optionally, the long transmission member and the short transmission member may also include grounding members, the grounding members being connected to the portion of the front housing corresponding to the protrusion of the mating part, and the grounding members may have grounding member openings corresponding to the protrusion of the mating part and grounding contact portions located on opposite sides of the grounding member openings.

[0027] Optionally, the grounding contact can be an elastic element capable of elastic deformation in a direction perpendicular to the surface of the mating part protrusion of the front housing.

[0028] Optionally, the long transmission member and the short transmission member also include grounding members, which are connected between adjacent long transmission members and between adjacent short transmission members, and the grounding members have elongated bodies with grounding contact portions provided on the bodies of the grounding members.

[0029] Optionally, a protrusion is provided in the direction perpendicular to the length direction of the body of the grounding member, and the protrusion is connected to the front housing.

[0030] Optionally, the long shield and the short shield are respectively composed of a grounding member and a rear shell, with a mating part protruding at the grounding member and a tail protruding at the position corresponding to the tail after the grounding member and the rear shell are combined.

[0031] Optionally, the grounding member is a member that is combined with multiple rear housings, and the grounding member has protrusions of mating parts at positions corresponding to multiple mating parts.

[0032] Optionally, a grounding member mounting port is formed in the grounding member at a position corresponding to the adjacent rear housing, and a grounding contact portion is provided in the grounding member mounting port.

[0033] Optionally, the grounding contact portion is an elastic element capable of elastic deformation in a direction perpendicular to the surface of the mating portion protruding from the grounding member.

[0034] Optionally, the grounding contact includes a flexible body and a grounding contact element embedded in the flexible body.

[0035] Optionally, the contact surface of the grounding contact is formed as a corrugated surface.

[0036] The second aspect of this utility model provides a transmission component for an electrical connector, which may include a transmission element and a shielding shell for accommodating the transmission element. The transmission element may include a first transmission element and a second transmission element, and the first transmission element and the second transmission element may respectively include a mating portion and a tail portion. The shielding shell has a mating portion protrusion and a tail portion protrusion.

[0037] Alternatively, the tail portion can be configured to be soldered to pads using surface mount technology (SMT).

[0038] Alternatively, the tail portion can be configured to be connected to pads via ball grid array (BGA) technology.

[0039] Optionally, the contact surface of the tail can be a flat quadrilateral shape for soldering to the pads using surface mount technology.

[0040] Optionally, the distance between the center line of the first transmission member in the length direction and the center line of the second transmission member in the length direction can be 0.6 mm.

[0041] Optionally, the shielding shell may include a front shell and a rear shell, with a mating protrusion formed in the front shell and a tail protrusion formed at a position corresponding to the tail after the front and rear shells are combined.

[0042] Optionally, the transmission component may also include a transmission component positioning block, which is penetrated and positioned by the transmission component.

[0043] Optionally, the transmission component may also include an encapsulation element disposed at the tail protrusion and penetrated by the tail.

[0044] Optionally, grounding pins may be formed on the edges of the front and rear housings that form the tail protrusion.

[0045] Optionally, the transmission member may also include a grounding member, which is connected to the portion of the front housing corresponding to the protrusion of the mating part, and the grounding member may have a grounding member opening corresponding to the protrusion of the mating part and grounding contact portions located on opposite sides of the grounding member opening.

[0046] Optionally, the grounding contact can be an elastic element capable of elastic deformation in a direction perpendicular to the surface of the mating part protrusion of the front housing.

[0047] Optionally, the transmission component may also include a grounding component connected between adjacent transmission components, and the grounding component may have an elongated body with a grounding contact portion provided on the body of the grounding component.

[0048] Optionally, a protrusion may be provided in the direction perpendicular to the length direction of the body of the grounding member, and the protrusion is connected to the front housing.

[0049] Optionally, the shielding shell is composed of a grounding member and a rear shell, with a mating part protruding at the grounding member and a tail protruding at the position corresponding to the tail after the grounding member and the rear shell are combined.

[0050] Optionally, the grounding member is a member that is combined with multiple rear housings, and the grounding member has protrusions of mating parts at positions corresponding to multiple mating parts.

[0051] Optionally, a grounding component mounting port may be formed at a position corresponding to the adjacent rear housing in the grounding component, and a grounding contact portion may be provided in the grounding component mounting port.

[0052] Optionally, the grounding contact portion can be an elastic element capable of elastic deformation in a direction perpendicular to the surface of the mating portion protruding from the grounding member.

[0053] Optionally, the grounding contact may include a flexible body and a grounding contact element embedded in the flexible body.

[0054] Optionally, the contact surface of the grounding contact can be formed as a corrugated surface.

[0055] Optionally, the transmission component may include: a plurality of long transmission components, including a long transmission element and a long shielding shell accommodating the long transmission element; and a plurality of short transmission components, including a short transmission element and a short shielding shell accommodating the short transmission element; the long transmission components and the short transmission components constitute a transmission component group in such a way that the long transmission components cover the short transmission components.

[0056] A third aspect of this invention provides a printed circuit board, the surface of which includes at least two columns of signal pads arranged along a first direction. The signal pad columns are formed by multiple signal pad groups arranged at intervals in the first direction. The signal pad columns are arranged side by side at intervals in a second direction perpendicular to the first direction. Around each of the signal pad groups, multiple ground pads are arranged at intervals in a direction surrounding the signal pad groups.

[0057] Optionally, the surface of the printed circuit board may include four columns of signal pads.

[0058] Optionally, the signal pad group may include two signal pads arranged at intervals.

[0059] Optionally, grounding pads may be provided on both sides of the first direction and on both sides of the second direction of each signal pad group.

[0060] Optionally, the signal pads can be formed in a circular shape and / or a quadrilateral shape.

[0061] Optionally, the ground pad located between the signal pad groups in the first direction can be formed in an "I" shape, and the ground pad located on both sides of the signal pad column in the first direction can be formed in a U-shape.

[0062] Optionally, the grounding pads located on both sides of the signal pad group in the second direction can be formed in a rectangular shape.

[0063] Optionally, the surface of the printed circuit board may further include at least two columns of low-speed signal pads arranged along the first direction, wherein the low-speed signal pad columns are formed by multiple low-speed signal pads arranged at intervals in the first direction, and the low-speed signal pad columns are arranged side by side at intervals in the second direction.

[0064] Optionally, the surface of the printed circuit board may include four columns of the low-speed signal pads.

[0065] These technologies can be used individually or in any suitable combination. The above overview is provided by way of example only and is not intended to be limiting. Attached Figure Description

[0066] The accompanying drawings are not to scale. In the drawings, every identical or nearly identical component shown in the various figures may be represented by the same reference numerals. For clarity, not every component in every figure is labeled with a reference numeral.

[0067] Figure 1 A perspective view of an electronic system according to some exemplary embodiments of the present invention is shown.

[0068] Figure 2 An exploded view of an electronic system according to some exemplary embodiments of the present invention is shown.

[0069] Figure 3 An exploded view of an electrical connector according to some exemplary embodiments of the present invention is shown.

[0070] Figure 4A A perspective view of the insulating housing of an electrical connector according to some exemplary embodiments of the present invention is shown.

[0071] Figure 4B A perspective view of the insulating housing of an electrical connector according to some exemplary embodiments of the present invention is shown, viewed from the bottom.

[0072] Figure 5A A front view of an electrical connector according to some exemplary embodiments of the present invention is shown.

[0073] Figure 5B An electrical connector according to some exemplary embodiments of the present invention is shown along... Figure 5A The cross-sectional view taken from line AA in the diagram.

[0074] Figure 5C An electrical connector according to some exemplary embodiments of the present invention is shown along... Figure 5A The cross-sectional view taken from line BB in the diagram.

[0075] Figure 6A A top view of an electrical connector according to some exemplary embodiments of the present invention is shown.

[0076] Figure 6B Electrical connectors according to some exemplary embodiments of the present invention are shown. Figure 6A A magnified view of part B.

[0077] Figure 6C A bottom view of an electrical connector according to some exemplary embodiments of the present invention is shown.

[0078] Figure 7A A perspective view of a transmission component assembly of an electrical connector according to some exemplary embodiments of the present invention is shown.

[0079] Figure 7B An exploded view of a long transmission component of an electrical connector according to some exemplary embodiments of the present invention is shown.

[0080] Figure 8A A perspective view of a short transmission component of an electrical connector according to some exemplary embodiments of the present invention is shown.

[0081] Figure 8B An exploded view of the short transmission component of an electrical connector according to some exemplary embodiments of the present invention is shown.

[0082] Figure 8C A perspective view of a short transmission element of an electrical connector according to some exemplary embodiments of the present invention is shown.

[0083] Figure 8D A bottom view of the short transmission component of an electrical connector according to some exemplary embodiments of the present invention is shown.

[0084] Figure 9A A perspective view of a short transmission component of an electrical connector according to some exemplary embodiments of the present invention is shown.

[0085] Figure 9B A perspective view of the grounding member of the short transmission component of an electrical connector according to some exemplary embodiments of the present invention is shown.

[0086] Figure 10A A perspective view of a short transmission component of an electrical connector according to some other exemplary embodiments of the present invention is shown.

[0087] Figure 10B A perspective view of the grounding member of the short transmission component of an electrical connector according to some other exemplary embodiments of the present invention is shown.

[0088] Figure 11A A perspective view of a short transmission component of an electrical connector according to some further exemplary embodiments of the present invention is shown.

[0089] Figure 11B An exploded view of the short transmission component of an electrical connector according to some further exemplary embodiments of the present invention is shown.

[0090] Figure 11C The following diagram illustrates the grounding member of the short transmission component of an electrical connector according to some further exemplary embodiments of the present invention. Figure 11B A magnified view of part C in the image.

[0091] Figure 12A A perspective view of a short transmission component of an electrical connector according to some further exemplary embodiments of the present invention is shown.

[0092] Figure 12B An exploded view of the short transmission component of an electrical connector according to some further exemplary embodiments of the present invention is shown.

[0093] Figure 13 A schematic diagram of an adapter card according to some exemplary embodiments of the present invention is shown.

[0094] Figure 14A A schematic diagram of a printed circuit board according to some exemplary embodiments of the present invention and a partial enlarged view of part E of the printed circuit board are shown.

[0095] Figure 14B Schematic diagrams of a long transmission member and a short transmission member according to some exemplary embodiments of the present invention are shown, as well as a partially enlarged view of the tail of the long transmission member and the short transmission member.

[0096] Figure 15AA schematic diagram of a printed circuit board according to some other exemplary embodiments of the present invention and a partial enlarged view of part F of the printed circuit board are shown.

[0097] Figure 15B Schematic diagrams of a long transmission member and a short transmission member according to some other exemplary embodiments of the present invention are shown, as well as partially enlarged views of the tails of the long transmission member and the short transmission member.

[0098] Figure 16 An exploded view of an electronic system according to some other exemplary embodiments of the present invention is shown.

[0099] Figure 17 An exploded view of an electrical connector according to some other exemplary embodiments of the present invention is shown.

[0100] Explanation of reference numerals in the attached figures:

[0101] 100 Electrical connectors 10 Insulating housings

[0102] 101 Low-speed signal section 20 Long transmission components

[0103] 102 High-speed signal section 210 Long transmission component

[0104] 110 Groove 211 First Long Transmission Component

[0105] 111 Separator 212 Second Long Transmission Component

[0106] 120 Receiving groove 2111 Mating part

[0107] 11 Stop component 2112 Rear end

[0108] 30 Short transmission component 221 Front housing

[0109] 310 Short transmission component 222 Rear housing

[0110] 311 First Short Transmission Component 2301 Package

[0111] 312 Second short transmission component 223 Mating part protrusion

[0112] 3111 Fitting part 224 Tail protrusion

[0113] 3314 Laser welding area 213 Transmission component positioning block

[0114] 3112 Tail end 220 long shielding shell

[0115] 323 Protruding part of mating section 230 Grounding component

[0116] 324 Tail protrusion opening 2201 Grounding component opening

[0117] 326 Package 232 Grounding Contact

[0118] 313 Transmission component positioning block 2321 Laser welding area

[0119] 330 Grounding component 40 Transmission component group

[0120] 3301 Grounding component opening 320 Short shielding shell

[0121] 332 Grounding contact part; 3211 Grounding component

[0122] 331 Grounding component 3210 Mating part protrusion

[0123] 3311 Body 3213 Grounding component installation port

[0124] 3312 Grounding contact part; 3221 Rear housing

[0125] 3313 Protrusion 3214 Grounding Contact

[0126] 300 Printed Circuit Board 3215 Flexible Body

[0127] 3010 First signal pad row 3216 Grounding contact

[0128] 3020 Second signal pad column; 3070 First ground pad.

[0129] 3030 Third column pad; 3080 Second ground pad.

[0130] 3040 Fourth column pad; 3051 Third grounding pad.

[0131] 3050 First column grounding pad; 30551 Fourth grounding pad

[0132] 3055 Second column grounding pad; 30561 Fifth grounding pad

[0133] 3056 Third column grounding pad; 3031 Third signal pad group

[0134] 3011 First signal pad group; 3041 Fourth signal pad group

[0135] 3021 Second signal pad group; 3061 Eighth ground pad

[0136] 3060 Four-column grounding pad; 30651 Ninth grounding pad

[0137] 3065 Fifth column grounding pad; 30661 Tenth column grounding pad

[0138] 3066 Sixth column ground pad; 31 First column low-speed signal pad

[0139] 3086 Sixth grounding pad; 33 Third column low-speed signal pad

[0140] 3096 Seventh grounding pad; 32 Second column low-speed signal pad

[0141] 50 Loss components 34 Fourth column low-speed signal pads

[0142] 60 locking parts, 200 adapter cards

[0143] 70 chamber 80 low-speed signal terminal

[0144] 71 Long shielding enclosure housing 81 Long signal terminals

[0145] 72 Short shielding enclosure housing; 82 Short signal terminals.

[0146] 75 chamber 90 terminal positioning block Detailed Implementation

[0147] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments. It should be noted that the following detailed description is for illustrative purposes only and is not intended to limit the scope of the invention.

[0148] The inventors have recognized a technique for a compact, robust, high-density electrical connector that can solve some of the technical problems in related technologies, providing reliable mechanical and electrical connections while ensuring high-speed data transmission. These techniques can be used individually or in any suitable combination.

[0149] The inventors have recognized that, in order to achieve high density in electrical connectors, increasing the number of signals passing through the connector by adding more terminals may undesirably result in a longer overall length of the connector and a larger spatial structure for the product, which is detrimental to miniaturization and micro-manufacturing. Furthermore, the inventors have recognized and realized that packing existing connection terminals more tightly together to support miniaturization can easily lead to signal crosstalk and affect signal transmission quality.

[0150] The inventors have recognized and realized that a compact, robust, and high-density electrical connector can be provided by employing a unique structural design. The electrical connector is constructed including an insulating shell, multiple transmission members, each including a transmission member and a shielding shell accommodating the transmission members; the multiple transmission members are arranged along the length of the insulating shell on the two inner walls of a recess, forming an insertion space. The electrical connector of this invention can be configured to include single-density and dual-density transmission members. In a single-density transmission member, a single row of transmission members is provided on each side of the length of the insulating shell. In a dual-density transmission member, a double row of transmission members is provided on each side of the length of the insulating shell. In the electrical connector of this invention, a separate shielding shell is provided for each transmission member, which is disposed around the transmission member to produce the desired shielding effect for signal transmission and to minimize crosstalk caused by signal differentials used for data transmission at the signal terminals, thereby achieving the desired signal integrity performance. Therefore, this invention provides a compact, robust, single-row or double-row high-density electrical connector that provides reliable mechanical and electrical connections while ensuring high-speed data transmission.

[0151] The inventors have recognized and realized that special structural designs can be made for multiple transmission components to further improve space utilization. Multiple transmission components can be designed to include multiple long transmission components and multiple short transmission components. Long and short transmission components are arranged in a manner where the long transmission components cover the short transmission components, forming transmission component groups. Multiple transmission component groups are arranged along the length of the insulating shell on the two inner walls of a groove, thus forming an insertion space. In the construction of such an electrical connector, a unique design is made for the lower space of the long transmission components. The long shielding shell is designed in an L-shape (e.g., an inverted L-shape), and the short shielding shell is placed in the lower recess of the L-shape of the long shielding shell, allowing the long transmission components to cover the short transmission components. This results in a double row of transmission components (i.e., long and short transmission components) on one side of the electrical connector. Compared to conventional edge connectors, the overall size of this novel electrical connector can be significantly shortened in length, thereby increasing the number of transmission components (i.e., connection terminals) within a limited space. Therefore, this invention provides a compact, robust, dual-row high-density electrical connector that provides reliable mechanical and electrical connections while ensuring high-speed data transmission.

[0152] The inventors have recognized and realized that the tail of the transmitter can be specially structurally designed to allow for the use of different semiconductor packaging technologies for different application scenarios. In some embodiments, the tail of the transmitter can be configured to be soldered to pads via surface mount technology (SMT). In some embodiments, the contact surface of the tail is a flat quadrilateral shape for soldering to pads via surface mount technology. In other embodiments, the tail of the transmitter can be configured to connect to pads via ball grid array (BGA) technology. In some embodiments, the tail of the transmitter can be configured as a needle shape for connection to pads via ball grid array (BGA) technology. The signal pads in the printed circuit board of this invention can be formed in circular and / or quadrilateral shapes to adapt to the needle shape and / or flat quadrilateral shape of the tail of the transmitter of the electrical connector for soldering to pads using ball grid array (BGA) technology and / or surface mount technology (SMT). The electrical connector of this invention further improves the freedom of structural design by setting the tail of the transmission component with different structures to allow for packaging with different semiconductor packaging technologies.

[0153] The inventors have recognized and realized that it is possible to provide designs for high-density electrical connectors that also improve connection stability and transmission quality. In some embodiments, such an electrical connector may include connection terminals having long and short transmission elements, both of which have mating portions exposed in an insertion space within the insulating housing of the electrical connector, the mating portions being designed with a unique hook-shaped configuration. Furthermore, the inventors have recognized and realized that the transmission elements (including the long and short transmission elements) can be configured to include a first transmission element and a second transmission element. The mating portions (i.e., signal contacts) of the first and second transmission elements can be configured as differential pairs. These differential pairs can be coupled differential pairs of signal contacts spaced apart along the length of the insulating housing. Such coupled differential pairs can be positioned to mate with multiple rows of pads along an adapter card inserted into the electrical connector, thereby providing a large number of high-density interconnects without increasing the length of the electrical connector.

[0154] The inventors have recognized that some electrical connectors can utilize differential signals to transmit signals from a first electronic system to a second electronic system. A pair of conductors is used for signal transmission, one of which is driven by a first voltage, and the other by a voltage complementary to the first voltage. The voltage difference between the two conductors represents the signal. The electrical connector can include multiple pairs of conductors to transmit multiple signals. To control the impedance of these conductors and reduce crosstalk between signals, a ground conductor is required for each pair. The inventors further recognize and realize that to further ensure high-density electrical connectors transmit data at high speeds while minimizing crosstalk between signals, each differential pair in the electrical connector can be configured with a fully shielded shell. In such a structural design, both the long and short shields are formed as fully shielded shells. The long and short shields can each include a front shell and a rear shell, with a mating protrusion formed on the front shell and a tail protrusion formed at a position corresponding to the tail after the front and rear shells are combined. Two U-shaped metal shields (front and rear shells) are laser-welded together to form a fully shielded shell.

[0155] The inventors further recognized and realized that a grounding (GND) component with multiple contacts can be soldered onto the upper surface of the shielding shell. Specifically, the long transmission component and the short transmission component can each include a grounding component, the grounding component being connected to the portion of the front housing corresponding to the protrusion of the mating part, and the grounding component can have a grounding component opening corresponding to the protrusion of the mating part and grounding contact portions located on opposite sides of the grounding component opening. In such an electrical connector of this invention, from the contact point area (the mating part area of ​​the transmission component) to the solder joint (the area where the tail of the transmission component is joined), the signal pins are surrounded by GND pads or completely covered by the shielding shell, thereby constraining the differential pair on all four sides by grounding conductors. In other words, in the electrical connector of this invention, the grounding contact portion of the grounding component and the shielding shell can be disposed around the signal terminals (the mating part and the tail of the transmission component) to produce the desired shielding effect on signal transmission and to eliminate crosstalk caused by signal differentials used for data transmission at the signal terminals to the greatest extent, thereby achieving the desired signal integrity performance. In particular, the coupled differential pairs all employ a hook-shaped design, which helps reduce stubs to achieve better signal integrity (SI) performance.

[0156] The inventors have recognized and realized that high-frequency performance can be improved by incorporating a lossy element at the bottom of a recess in the insulating housing, which connects the short shielding shells together. Any suitable lossy material can be used for this "lossy" element. Such a material can be considered lossy: it dissipates a sufficient portion of the electromagnetic energy that interacts with it and significantly affects connector performance. The significant effect is due to attenuation in the frequency range that is critical to the connector. In some configurations, the lossy material can suppress resonance within the connector's grounding structure, and the critical frequency range may include the inherent frequencies of the resonant structure in the absence of the lossy material. In other configurations, the critical frequency range may be the entire or part of the connector's operating frequency range.

[0157] The inventors have recognized and realized that, in order to provide greater flexibility in application scenarios, electrical connectors can be constructed to include a low-speed signal segment and a high-speed signal segment separate from the low-speed signal segment. The high-speed signal segment includes multiple long transmission elements and multiple short transmission elements. The low-speed signal terminals are fixed with a sheet and face each other with their wide edges facing each other. Instead of separate grounding terminals between pairs of high-speed signal terminals, each pair of signal terminals is fully shielded by a shielding shell. Specifically, the low-speed and high-speed signal segments are configured with different terminal densities, thus allowing the electrical connector to be provided as connectors with different densities. Optionally or additionally, the low-speed terminals can be transformed into high-speed terminals by adding conductive plastic (e.g., lossy elements further described below) to the connector housing. The techniques described herein enable the electrical connector to be assembled with connection terminals of different configurations, which can be signal terminals or grounding terminals, thereby supporting different combinations of low-speed and high-speed signals to provide the electrical connector with more application scenarios.

[0158] The inventors have recognized and realized that a small-pitch design between signal pins is necessary to provide a compact, robust, high-density, dual-row electrical connector. The distance between the centerline of the first transmission element and the centerline of the second transmission element along their length can be 0.6 mm. The spacing between different differential pairs (the distance between the centerlines of adjacent long or short transmission elements along their length) can be 2.10 mm. A double-row mating portion (i.e., double-row contacts) of the dual-row transmission elements is provided on one side of the electrical connector, and each transmission element provides a differential pair; that is, each transmission element group has four mating portions (contacts) within the cross-section of the surface where the mating portion protrudes, such as... Figure 5BThe screenshot clearly shows this. Compared with a general edge connector, the overall size of the electrical connector of this utility model can be greatly shortened in length, and the number of the joints (signal pins) of the transmission components can be increased within a limited space, thereby enabling the electrical connector of this utility model to provide a compact, robust, dual-row high-density electrical connector.

[0159] The inventors have recognized and are aware that one or more techniques can be used to prevent unwanted signal crosstalk. These techniques may include designing grounding components (i.e., ground terminals) and transmission components (i.e., signal terminals). In the electrical connector of this invention, the long transmission component and the short transmission component may each include a grounding component connected to a portion of the front housing corresponding to the mating protrusion, and the grounding component may have a grounding component opening corresponding to the mating protrusion and grounding contacts located on opposite sides of the grounding component opening. In such a configuration, the differential signal pair has dual GND pins on both sides, and there are two rows of grounding contacts (four grounding contacts in total) around the mating protrusion. That is, the mating portions of the two transmission components can be constrained by the grounding component on at least both sides, and this structural design minimizes unwanted signal crosstalk.

[0160] The inventors have recognized and realized that by providing a locking element and a receiving groove for inserting the locked element into the insulating housing of the electrical connector, a reliable locking and mechanical connection can be provided for the electrical connector. Furthermore, the inventors have recognized and realized that by providing a stop element on the outermost side of the insulating housing of the electrical connector to cover and secure a long shielding shell, a reliable mechanical connection can be further provided for the electrical connector.

[0161] The inventors have recognized and realized that the grounding contact portion of the grounding member of an electrical connector can be configured as an elastic element capable of elastic deformation in a direction perpendicular to the surface of the mating protrusion of the front housing, thereby maintaining ideal insertion and retention forces for the inserted adapter card. Therefore, the grounding contact portion of this grounding member can reliably electrically connect and securely mechanically fix the adapter card inserted into the groove of the insulating housing with a simple design structure.

[0162] The inventors have recognized and are aware of alternative implementations of the grounding component in electrical connectors. Long and short shielding shells can be composed of grounding components and rear shells, respectively. The grounding component is a component combined with multiple rear shells, with mating protrusions formed at positions corresponding to multiple mating portions on the grounding component. In this configuration, the front shell of the shielding shell is formed into a complete front shielding shell (e.g., by laser welding). That is, in this configuration, the grounding component and the front shell of the shielding shell are formed as a single piece, and the grounding component is combined with multiple rear shells to form a complete shielding shell. In this configuration, there is at least one GND pin between each differential signal pair. In one implementation, a grounding mounting port is formed in the grounding component at a position corresponding to an adjacent rear shell, and a ground contact is provided at the grounding mounting port of the grounding component; that is, the GND pin is integrated with the front shell of the shielding shell (i.e., the integrated grounding component). Electrical connectors implemented in this way simplify the manufacturing process and reduce costs. In another implementation, the grounding contact includes a flexible body and a grounding contact element embedded in the flexible body, wherein the contact surface of the grounding contact element is formed as a corrugated surface. In both implementations, the mating portions of the two transmission elements can be constrained by the grounding member at least on both sides, which also enables the minimization of unwanted signal crosstalk.

[0163] The inventors have recognized and realized that printed circuit boards (PCBs) can be specially structurally designed to enable their use in compact, robust, high-density electrical connectors. This is achieved by configuring the surface of the PCB to include at least two rows of signal pads arranged along a first direction, each row consisting of multiple signal pad groups spaced apart in that direction, and the signal pad rows arranged side-by-side in a second direction perpendicular to the first direction. Around each signal pad group, multiple ground pads are spaced apart in a direction surrounding the signal pad group. In this configuration, each signal pad group can be surrounded by multiple ground pads, thereby minimizing unwanted signal crosstalk. In the PCB of this invention, the PCB includes at least two rows of signal pads. In the PCB of this invention, a signal pad group may include two signal pads arranged spaced apart. In some embodiments, the PCB of this invention includes two rows of the signal pads, allowing the PCB to be adapted for single-row high-density electrical connectors. In some embodiments, the printed circuit board of this invention includes four rows of signal pads, allowing it to be adapted to dual-row high-density electrical connectors. Therefore, the overall size of the electrical connector can be significantly reduced in length, increasing the number of signal pads within a limited space, thereby enabling the electrical connector using this printed circuit board to be provided as a compact, robust, single-row or dual-row high-density electrical connector.

[0164] The inventors have recognized and are aware that the surface of a printed circuit board can be configured to include low-speed signal pads. In some embodiments, the surface of the printed circuit board may further include at least two columns of low-speed signal pads arranged along a first direction, the columns being formed by a plurality of low-speed signal pads spaced apart in the first direction, and the columns being arranged side-by-side spaced apart in a second direction. In some embodiments, the surface of the printed circuit board may include two columns of the low-speed signal pads to accommodate a single-row high-density electrical connector. In some embodiments, the surface of the printed circuit board may include four columns of the low-speed signal pads to accommodate a double-row high-density electrical connector. The low-speed signal pads and high-speed signal pads of the printed circuit board are isolated from each other and are configured to have two different densities. Therefore, the printed circuit board of this invention can be adapted to mate with electrical connectors configured with different densities, further ensuring that electrical connectors using this printed circuit board can be provided as compact, robust, single-row or double-row high-density (and different density) electrical connectors.

[0165] The electrical connector 100, the transmission components 20 and 30 of the electrical connector, and the printed circuit board 300 according to some embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0166] Some exemplary embodiments of the present invention provide an electrical connector 100. The electrical connector 100 according to embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0167] Figure 1 A perspective view of an electronic system according to an exemplary embodiment of the present invention is shown. Figure 2 An exploded view of an electronic system according to an exemplary embodiment of the present invention is shown. (Reference) Figure 1 and Figure 2 The electronic system may include an electrical connector 100, an adapter card 200 inserted into the electrical connector 100, and a printed circuit board 300 mounted to the electrical connector 100.

[0168] Let's combine the following... Figures 3 to 12B as well as Figure 16 and Figure 17 The electrical connector 100 of this utility model will be described. Figure 3 and Figure 17 An exploded view of an electrical connector according to different exemplary embodiments of the present invention is shown. (Reference) Figure 3 and Figure 17The electrical connector 100 may include an insulating housing 10. The insulating housing 10 may have a groove 110 extending along the length direction of the insulating housing 10. The electrical connector 100 may include a plurality of transmission members, each transmission member including a transmission element and a shielding shell accommodating the transmission element. The plurality of transmission members are arranged along the length direction of the insulating housing on two inner walls of the groove, forming an insertion space. The electrical connector of this invention can be configured to include single-density and dual-density transmission members. In single-density transmission members (such as...) Figure 16 and Figure 17 In the example shown), a single row of transmission members is provided on each side of the length direction of the insulating housing. In the dual-density transmission members (such as...) Figures 1 to 3 As shown in the diagram, double rows of transmission members are provided on each side of the length direction of the insulating housing. In the electrical connector of this invention, a separate shielding shell is provided for each transmission member, which is disposed around the transmission member to produce the desired shielding effect on signal transmission and to minimize crosstalk caused by signal differentials used for data transmission at the signal terminals, thereby achieving the desired signal integrity performance. Therefore, this invention provides a compact, robust, single-row or double-row high-density electrical connector that provides reliable mechanical and electrical connections while ensuring high-speed data transmission.

[0169] refer to Figure 16 and Figure 17 The electrical connector 100 is a single-row high-density electrical connector, in which a single-row transmission member is provided on each side of the length direction of the insulating housing. The single-row transmission member is combined with multiple short transmission members in a double-row high-density electrical connector (as described below). Figures 8A to 8D The described structure is similar. Therefore, a detailed description of the dual-row high-density electrical connector will be provided below with reference to the accompanying drawings. In the single-row high-density electrical connector, the long transmission components (as described below with reference to the accompanying drawings) are omitted. Figures 7A to 7B As described above, it only has a single row of transmission components (i.e., short transmission components). Those skilled in the art will be able to clearly understand the implementation of the single-row high-density electrical connector of this invention based on the following description.

[0170] The following is combined with Figures 4A to 12BThis invention provides a detailed description of the dual-row high-density electrical connector. In the dual-row high-density electrical connector 100, the connector 100 may further include multiple long transmission components 20 and multiple short transmission components 30. The multiple long transmission components 20 include a long transmission element 210 and a long shielding shell 220 that accommodates the long transmission element 210. The multiple short transmission components 30 may include a short transmission element 310 and a short shielding shell 320 that accommodates the short transmission element 310, as described below in conjunction with... Figures 7A to 8B As described in detail above. The terms "long transmission component" and "short transmission component," as well as "long shielding shell" and "short shielding shell" used in this utility model are only based on a comparison of their relative dimensions and should not be construed as requiring the components to reach a specific physical length threshold, nor as representing that the components need to meet any preset size standards in actual applications. Therefore, they should not be construed as limitations on this utility model.

[0171] In some implementations, such as Figure 7A As shown, the long transmission member 20 and the short transmission member 30 can be configured into a transmission member group 40 in such a way that the long transmission member 20 covers the short transmission member 30. Multiple transmission member groups 40 are arranged on the two inner walls of the groove 110 in the length direction of the insulating housing 10 to form an insertion space.

[0172] In the construction of the electrical connector of this invention, a unique structural design is adopted for the lower space of the long transmission component, so that the short transmission components can be arranged using the lower space of the long transmission component. In this way, more (e.g., twice) number of transmission components can be arranged in a limited space without increasing the total length of the connector, thereby achieving high density of the electrical connector.

[0173] In some embodiments, the long shielding shell can be designed in an L-shape, and the short shielding shell can be disposed in the lower recess of the L-shape of the long shielding shell, so that the long transmission member can cover the short transmission member, thereby obtaining a double row of transmission members (i.e., long transmission member and short transmission member) on one side of the electrical connector. Specifically, as Figure 7A As shown, the cross-section of the long shielding shell 220 along the height direction can be L-shaped, and the cross-section of the short shielding shell 320 along the height direction can be elongated. The short shielding shell 320 can be disposed in the L-shaped recess of the long shielding shell 220. With this special structural design, compared to conventional edge connectors, the overall size of the electrical connector of this invention can be significantly shortened in length, thereby increasing the number of transmission components (i.e., connection terminals) within a limited space. Therefore, this invention provides a compact, robust, dual-row high-density electrical connector that provides reliable mechanical and electrical connections while ensuring high-speed data transmission.

[0174] In some exemplary embodiments, the long transmission member 210 of the long transmission member 20 and the short transmission member 310 of the short transmission member 30 may each include a mating portion and a tail portion. For example... Figure 7B As shown, the long transmission member 210 may include a mating portion 2111, a tail portion 2112, and a connecting portion 2113, the connecting portion 2113 being used to connect the mating portion 2111 and the tail portion 2112 together. In some embodiments, the connecting portion 2113 has an L-shaped shape, and the mating portion 2111 has a hook-shaped shape that curves downwards and is formed integrally with the connecting portion 2113. The tail portion 2112 is configured in a needle-like shape (e.g., ...). Figure 7B and Figure 14B As shown), it is connected to the pads using Ball Grid Array (BGA) technology, specifically to the solder balls 2115 at the bottom. In this case, each signal pad in the signal pad group corresponding to the tails of the long transmitter 210 and the short transmitter 310 on the circuit board is circular in shape (e.g., Figure 14A (As shown).

[0175] like Figure 8C As shown, the short transmission component 310 may include a mating portion 3111, a tail portion 3112, and a connecting portion 3113, wherein the connecting portion 3113 is used to connect the mating portion 3111 and the tail portion 3112 together. Specifically, the connecting portion 3113 is provided with a plurality of snap-fit ​​slots 3114 for engaging with the transmission component positioning block (as described below). Figure 8B The positioning structure described herein is used for snap-fit ​​fixation. In some embodiments, the connecting part 3113 has an elongated shape, and the mating part 3111 has a hook shape and is integrally formed with the connecting part 3113. The tail 3112 of the short transmission member 310 is provided in a needle-like shape for connection with the solder ball (not shown) at the bottom.

[0176] In alternative implementation methods, such as Figure 15B As shown, the mating portion of the long transmission member 210 and the short transmission member 310 has a hook-shaped shape that curves downwards, and the contact surface of the tail of the long transmission member 210 and the short transmission member 310 is a flat quadrilateral shape, which is soldered to the pads using surface mount technology (SMT). In this case, each signal pad in the signal pad group corresponding to the tail of the long transmission member 210 and the short transmission member 310 on the circuit board is quadrilateral in shape (e.g., Figure 15A (As shown).

[0177] In the electrical connector of this utility model, such as Figure 7B and Figure 8C As shown, the mating portion 2111 of the long transmission member 210 and the mating portion 3111 of the short transmission member 310 can be designed with a unique hook shape, which helps to reduce stubs and thus achieve better signal integrity (SI) performance.

[0178] In some exemplary embodiments, the long shielding shell 220 for accommodating the long transmission member 20 and the short shielding shell 320 for accommodating the short transmission member 30 may respectively have a mating portion protrusion and a tail protrusion. For example... Figure 7A and Figure 7B As shown, the long shielding shell 220 may have a mating portion protrusion 223 from which the mating portion 2111 extends and a tail protrusion 224 from which the tail extends. For example... Figure 8A and Figure 8B As shown, the short shielding shell 320 may have a mating portion protrusion 323 and a tail protrusion 324. In some exemplary embodiments, such as Figure 7B As shown, the shielding shell 220 may include a front shell 221 and a rear shell 222, which together form a complete shielding shell to accommodate the transmission component. A mating protrusion 223 is formed in the front shell 221, and a tail protrusion 224 is formed at a position corresponding to the tail portion after the front shell 221 and rear shell 222 are combined. In some exemplary embodiments, such as... Figure 8B As shown, the shielding shell 320 may include a front shell 321 and a rear shell 322, which together form a complete shielding shell to accommodate the transmission component. A mating portion protrusion 323 is formed in the front shell 321, and a tail protrusion 324 is formed at a position corresponding to the tail portion after the front shell 321 and the rear shell 322 are combined.

[0179] In the implementation of the electrical connector of this invention, each differential pair in the connector can be configured to have a fully shielded shell. In this structural design, both the long and short shields are formed as fully shielded shells. By laser welding, the front and rear shells are formed into a fully shielded shell, thereby further ensuring that the high-density electrical connector can transmit data at a high speed while minimizing crosstalk between signals.

[0180] like Figure 4A and Figure 4B As shown, evenly spaced chambers 70 can be provided on both sides of the groove 110 of the insulating housing 10 of the electrical connector to accommodate the shielding shell. In some embodiments, the chambers 70 of the insulating housing 10 of the electrical connector 100 for accommodating the shielding shell may include a long shielding shell accommodating chamber 71 and a short shielding shell accommodating chamber 72 (e.g., Figure 5B (As shown). In particular, as Figure 5BAs shown, the long shielding housing accommodating chamber 71 can have a shape and size matching the L-shaped long shielding housing; and the short shielding housing accommodating chamber 72 can have a shape and size matching the elongated short shielding housing. Furthermore, separate chambers 75 for accommodating low-speed signal terminals can be provided on both sides of the groove 110 of the insulating housing 10 of the electrical connector. These separate chambers 75 include slots 76 evenly spaced along the length of the insulating housing to accommodate each low-speed signal terminal, such as... Figure 4B and Figure 5C As shown.

[0181] In some exemplary implementations, such as Figure 3 As shown, locking members 60 for fixing the electrical connector 100 and receiving grooves 120 for inserting the locked members 60 can be provided on both sides of the insulating housing 10 along the length direction of the insulating housing 10. By providing locking members and receiving grooves for inserting the locked members on the insulating housing of the electrical connector, reliable locking and mechanical connection can be provided for the electrical connector.

[0182] In some exemplary embodiments, the insulating housing 10 may further include a stop 11 disposed on the outermost side of the insulating housing 10, covering and securing the long shielding shell 220. In embodiments of the present invention, by providing a stop on the outermost side of the insulating housing of the electrical connector to cover and secure the long shielding shell, a reliable mechanical connection is further provided for the electrical connector.

[0183] In some exemplary embodiments, the electrical connector 100 may further include a loss member 50 disposed at the bottom of a recess 110 in the insulating housing 10 (e.g., Figure 3 and Figure 6C As shown), the loss member 50 is used to connect the short shielding shells 320 together. In some embodiments, the loss member 50 includes: a body portion 51 extending along the length direction; and ribs 52 formed on both sides of the body portion 51 and evenly spaced apart in the length direction. In some embodiments, a recess 53 is provided at the end of the rib 52 of the loss member 50, the recess 53 of the rib 52 being used to connect with the pins 325 of the front housing 321 of the short shielding shell 320 (as described below). Figure 8B(As described) to make connections. In some embodiments, high-frequency performance can be improved by providing a lossy member at the bottom of a recess in the insulating housing that connects the short shield shells together. Any suitable lossy material can be used for this "lossy" member. Such a material can be considered lossy: the material dissipates a sufficient portion of the electromagnetic energy that interacts with it and significantly affects the connector performance. The significant effect is due to attenuation in the frequency range that is critical to the connector. In some configurations, the lossy material can suppress resonance within the connector's grounding structure, and the critical frequency range can include the inherent frequency of the resonant structure in the absence of the lossy material. In other configurations, the critical frequency range can be the entire or part of the connector's operating frequency range.

[0184] To test whether a material is lossy, it can be tested within a frequency range that is less than or different from the frequency range that is relevant to connectors using the material. For example, the test frequency range could be from 10 GHz to 25 GHz or from 1 GHz to 5 GHz. Alternatively, lossy materials can be identified from measurements taken at a single frequency such as 10 GHz or 15 GHz.

[0185] Losses can be caused by the interaction between the electric field component of electromagnetic energy and the material; in this case, the material can be called electrically destructive. Alternatively or additionally, losses can be caused by the interaction between the magnetic field component of electromagnetic energy and the material; in this case, the material can be called magnetically destructive.

[0186] Electrically dissipative materials can be formed from dissipative dielectric materials and / or poorly conductive materials. They can also be formed from materials traditionally considered dielectric materials, such as those with an electric loss tangent greater than approximately 0.01, greater than 0.05, or between 0.01 and 0.2 in the relevant frequency range. The "electric loss tangent" is the ratio of the imaginary part to the real part of the material's complex permittivity.

[0187] Dissipative materials can also be formed from materials that are generally considered conductors but are relatively poor conductors in the relevant frequency range. These materials can conduct electricity in the relevant frequency range, but with some loss, making their conductivity weaker than that of the conductors in an electrical connector, but better than that of the insulator used in that connector. Such materials can contain conductive particles or regions that are sufficiently dispersed to not provide high conductivity, or these particles or regions can be otherwise prepared to have the property that results in relatively weak bulk conductivity compared to good conductors such as pure copper in the relevant frequency range. For example, die-cast metals or alloys of poorly conductive metals can provide sufficient loss in certain configurations.

[0188] This type of electrically dissipative material typically has a bulk conductivity of about 1 siemens / meter to about 100,000 siemens / meter, or about 1 siemens / meter to about 30,000 siemens / meter, or about 1 siemens / meter to about 10,000 siemens / meter. In some embodiments, materials with a bulk conductivity between about 1 siemens / meter and about 500 siemens / meter can be used. As a specific example, materials with a conductivity between about 50 siemens / meter and 300 siemens / meter can be used. However, it should be understood that the conductivity of the material can be selected empirically or through electrical simulation using known simulation tools to determine the conductivity that provides suitable signal integrity (SI) characteristics in the connector. For example, the SI characteristics obtained by measurement or simulation can be low crosstalk combined with low signal path attenuation or insertion loss, or low insertion loss deviation as a function of frequency.

[0189] It should also be understood that a lossy component does not need to have uniform properties throughout its entire volume. For example, a lossy component may have, for instance, an insulating skin or a conductive core. A component can be identified as lossy if its properties, when averaged over the region interacting with electromagnetic energy, are sufficient to attenuate that electromagnetic energy.

[0190] In some embodiments, the lossy material is formed by adding a filler containing particles to a binder. In such embodiments, the lossy component can be formed by molding or otherwise shaping the binder with filler into a desired form. The lossy material can be molded onto a conductor and / or molded into a conductor through an opening, which may be a ground conductor or shielding of a connector. Molding the lossy material onto the conductor or molding it into the conductor through an opening ensures close contact between the lossy material and the conductor, which can reduce the likelihood that the conductor supports resonance at a relevant frequency. This close contact may, but does not necessarily, result in ohmic contact between the lossy material and the conductor.

[0191] Optionally or additionally, the dissipative material can be molded onto or injected into the insulating material, for example, in a secondary injection molding operation, or vice versa. The dissipative material can be positioned against or sufficiently close to a grounding conductor, thus achieving significant coupling with the grounding conductor. Close contact does not require electrical coupling between the dissipative material and the conductor, as sufficient electrical coupling, such as capacitive coupling, between the dissipative component and the conductor can produce the desired results. For example, in some cases, a 100 pF coupling between the dissipative component and the grounding conductor can have a significant effect on suppressing resonance in the grounding conductor. In other examples employing frequencies in the range of approximately 10 GHz or higher, the reduction in electromagnetic energy in the conductor can be provided by sufficient capacitive coupling between the dissipative material and the conductor, having a mutual capacitance of at least about 0.005 pF, such as mutual capacitance in the range of about 0.01 pF to about 100 pF, about 0.01 pF to about 10 pF, or about 0.01 pF to about 1 pF. To determine whether a lossy material is coupled to a conductor, the coupling can be measured at a test frequency such as 15 GHz or within a test range such as 10 GHz to 25 GHz.

[0192] To form electrically dissipative materials, the filler can be conductive particles. Examples of conductive particles that can be used as fillers to form electrically dissipative materials include carbon or graphite formed as fibers, flakes, nanoparticles, or other types of particles. Various forms of fibers can be used, in woven or nonwoven form, coated or uncoated. Nonwoven carbon fibers are a suitable material. Metals in the form of powder, flakes, fibers, or other particles can also be used to provide suitable electrical dissipation characteristics. Alternatively, combinations of fillers can be used. For example, metal-plated carbon particles can be used. Silver and nickel are metal platings suitable for fibers. Coated particles can be used alone or in combination with other fillers such as carbon flakes.

[0193] Preferably, the filler will be present in a volume percentage sufficient to allow the formation of conductive paths from particle to particle. For example, when metal fibers are used, the fibers may be present in a volume percentage of about 3% to 30%. The amount of filler can affect the conductivity of the material, and the volume percentage of filler will be lower within this range to provide sufficient losses.

[0194] The binder or matrix can be any material that solidifies to position the filler, cures to position the filler, or can otherwise be used to position the filler. In some embodiments, the binder can be a thermoplastic material conventionally used in the manufacture of electrical connectors to facilitate the molding of the dissipative material into the desired shape and into the desired location as part of the manufacture of the electrical connector. Examples of such materials include liquid crystal polymers (LCPs) and nylon. However, many alternative forms of binder materials can be used. Curable materials such as epoxy resins can be used as binders. Alternatively, materials such as thermosetting resins or adhesives can be used.

[0195] While the aforementioned binder materials can be used to form dissipative materials by forming a binder around conductive particulate fillers, other binders or other methods can also be used to form dissipative materials. In some examples, conductive particles can be impregnated into or coated onto the formed matrix material, for example, by applying a conductive coating to a plastic or metal component. As used herein, the term "binder" includes materials that encapsulate fillers, impregnate fillers, or otherwise act as retaining fillers in a substrate.

[0196] For example, magnetically depleting materials can be formed from materials traditionally considered ferromagnetic, such as those with a magnetic loss tangent greater than approximately 0.05 in the relevant frequency range. The magnetic loss tangent is the ratio of the imaginary to the real part of the material's complex permittivity. Materials with even higher loss tangents can also be used.

[0197] In some embodiments, the magnetic lossy material may be formed from a binder or matrix material filled with particles, wherein the particles impart magnetic loss properties to the layer. The magnetic lossy particles may be in any convenient form, such as sheets or fibers. Ferrites are common magnetic lossy materials. Materials such as magnesium ferrite, nickel ferrite, lithium ferrite, yttrium garnet, or aluminum garnet can be used. Ferrites typically have a magnetic loss tangent greater than 0.1 in the relevant frequency range. Currently preferred ferrite materials have a loss tangent between approximately 0.1 and 1.0 in the frequency range of 1 GHz to 3 GHz, and more preferably a magnetic loss tangent greater than 0.5 in this frequency range.

[0198] Practical magnetically depleting materials, or mixtures containing magnetically depleting materials, can also exhibit dielectric or conductive loss effects of useful magnitude in portions of the relevant frequency range. Similar to the methods described above for forming electrically depleting materials, suitable materials can be formed by adding fillers that generate magnetic losses to the binder.

[0199] The material may be both a lossy dielectric or a lossy conductor and a magnetically lossy material. For example, such a material can be formed by using a partially conductive magnetically lossy filler or by using a combination of magnetically lossy fillers and electrically lossy fillers.

[0200] The lossy portion can also be formed in a variety of ways. In some examples, the binder material and filler can be molded into a desired shape and then fixed in that shape. In other examples, the binder material can be formed into a sheet or other shape from which lossy components with desired shapes can be cut. In some embodiments, the lossy portion can be formed by interleaving layers of lossy and conductive materials, such as metal foil. These layers can be firmly attached to each other, for example, by using epoxy resin or other adhesives, or can be held together in any other suitable manner. The layers have the desired shape before they can be fixed to each other, or can be stamped or otherwise shaped after they are held together. As a further alternative, the lossy portion can be formed by coating a plastic or other insulating material with a lossy coating, such as a diffused metallic coating.

[0201] In some exemplary implementations, such as Figure 6A As shown, the electrical connector 100 may include a low-speed signal section 101 and a high-speed signal section 102 separated from the low-speed signal section 101. The high-speed signal section 102 includes multiple long transmission components 20 and multiple short transmission components 30. The electrical connector of this invention adopts a partitioned structure design, thereby making the electrical connector with the partitioned structure design more flexible in terms of application scenarios.

[0202] like Figure 4A and Figure 6A As shown, the low-speed signal segment 101 and the high-speed signal segment 102 can be physically separated by the separator 111. Figure 6A and Figure 2 As shown, such a separator 111 can mate with a slot in the adapter card 200 inserted into the connector and can prevent the adapter card 200 from being inserted into the electrical connector 100 in an improper orientation. However, it is not necessary for different sections of the electrical connector to be physically separated by separators, and those skilled in the art can adjust them according to actual needs.

[0203] like Figure 5C As shown, the low-speed signal section includes low-speed signal terminal 80 (e.g., Figure 3As shown in the diagram, the low-speed signal terminal 80 includes a long signal terminal 81 and a short signal terminal 82, along with a terminal positioning block 90. ​​The low-speed signal terminals are fixed with a thin sheet and face each other with their wide edges facing each other. Alternatively, the low-speed signal terminal 80 may also be provided with a shield. In some embodiments, the long signal terminal 81 has a hook shape that curves downwards, and the short signal terminal 82 has a hook shape that curves upwards (e.g., ...). Figure 5C As shown in the figure, this helps to reduce stubs to achieve better signal integrity (SI) performance.

[0204] In some embodiments, the high-speed signal segment may include multiple long transmission components and multiple short transmission components. Instead of a separate ground terminal between each signal terminal in the high-speed signal terminal pair, each signal terminal pair is fully shielded by a shielding shell. Specifically, the low-speed signal segment 101 and the high-speed signal segment 102 are configured with different terminal densities, thus allowing the electrical connector of this invention to be provided as an electrical connector with different densities. Optionally or additionally, low-speed terminals can be transformed into high-speed terminals by adding conductive plastic (e.g., the loss-generating components described above) to the connector housing. The techniques described herein enable the electrical connector to be assembled with connection terminals of different configurations, which can be signal terminals or ground terminals, thereby supporting different combinations of low-speed and high-speed signals and enabling the use of the electrical connector in a wider range of applications.

[0205] In some exemplary implementations, such as Figure 7B As shown, the long transmission member 210 may include a first long transmission member 211 and a second long transmission member 212. For example... Figure 8C As shown, the short transmission element 310 may include a first short transmission element 311 and a second short transmission element 312. In some embodiments, such an electrical connector may include a connection terminal having a long transmission element and a short transmission element, both of which have mating portions exposed in an insertion space within the insulating housing of the electrical connector. In particular, these mating portions are designed with a unique hook-shaped structure (e.g., Figure 7B and Figure 8C (As shown), this allows for the provision of high-density electrical connectors. These high-density connectors also improve connection stability and transmission quality.

[0206] In the electrical connector of this invention, the transmission elements (including a long transmission element and a short transmission element) are configured to include a first transmission element and a second transmission element. The mating portions (i.e., signal contacts) of the first and second transmission elements can be constructed as differential pairs. These differential pairs can be coupled differential pairs of signal contacts spaced apart along the length direction of the insulating housing. Such coupled differential pairs can be positioned to mate with multiple rows of pads along an adapter card inserted into the electrical connector, thereby providing a large number of high-density interconnects without increasing the length of the electrical connector.

[0207] In some exemplary implementations, such as Figure 6B As shown, the distance P between the center line of the first long transmission member 211 and the center line of the second long transmission member 212 in the length direction can be 0.6 mm; the distance D between the center lines of adjacent long transmission members 20 in the length direction can be 2.10 mm. In some exemplary embodiments, the distance between the center line of the first short transmission member 311 and the center line of the second short transmission member 312 in the length direction can be 0.6 mm (not shown). In some exemplary embodiments, the distance between the center lines of adjacent short transmission members 30 in the length direction can be 2.10 mm (not shown).

[0208] The electrical connector of this invention employs a fine-pitch design between signal pins. The distance between the center line of the first transmission element and the center line of the second transmission element along their length direction can be 0.6 mm. The distance between different differential pairs (the distance between the center lines of adjacent long or short transmission elements along their length direction) can be 2.10 mm. A double-row mating portion (i.e., double-row contacts) of double-row transmission elements is provided on one side of the electrical connector, and each transmission element provides a differential pair. That is, each transmission element group has four mating portions (contacts) within the cross-section of the surface where the mating portion protrudes, such as... Figure 5B The screenshot clearly shows this. Compared with a general edge connector, the overall size of the electrical connector of this utility model can be greatly shortened in length, and the number of the joints (signal pins) of the transmission components can be increased within a limited space, thereby enabling the electrical connector of this utility model to provide a compact, robust, dual-row high-density electrical connector.

[0209] The following is combined with Figures 7A to 12B The long transmission member 20 and the short transmission member 30 included in the transmission member assembly of the electrical connector according to an embodiment of the present invention will be described in detail.

[0210] In some exemplary embodiments, the long shielding shell and the short shielding shell may each include a front shell and a rear shell, with a mating protrusion formed on the front shell and a tail protrusion formed at a position corresponding to the tail after the front and rear shells are combined. Figure 7B As shown, the long shielding shell 220 may include a front shell 221 and a rear shell 222, with a mating portion protrusion 223 formed in the front shell 221, and a tail protrusion 224 formed at a position corresponding to the tail portion 2112 after the front shell 221 and the rear shell 222 are combined. Figure 8B As shown, the short shielding shell 320 may include a front shell 321 and a rear shell 322, with a mating portion protrusion 323 formed in the front shell 321, and a tail protrusion 324 formed at the position corresponding to the tail portion 3112 after the front shell 321 and the rear shell 322 are combined.

[0211] In some exemplary embodiments, the long transmission member 20 and the short transmission member 30 may each include a transmission member positioning block, which is penetrated and positioned by the long transmission member 210 and the short transmission member 310, respectively. Figure 7B As shown, the long transmission member 20 may further include a transmission member positioning block 213, which is penetrated and positioned by the long transmission member 210. Figure 8B As shown, the short transmission member 30 may further include a transmission member positioning block 313, which is penetrated and positioned by the short transmission member 310. In some embodiments, the transmission member (including the long transmission member and the short transmission member) and the transmission member positioning block can be integrally injection molded. In some embodiments, the transmission member positioning block can be configured as two separate positioning members (including a front positioning member and a rear positioning member), which are assembled together to fix and position the transmission member (including the long transmission member and the short transmission member). In this implementation, the snap-fit ​​groove included in the transmission member of the electrical connector of this invention is configured to fit the transmission member positioning block in a form-fitting manner, thereby further ensuring a reliable mechanical connection of the electrical connector.

[0212] In some exemplary embodiments, the long transmission member 20 and the short transmission member 30 may each include an encapsulation member disposed at the tail protrusion and respectively penetrated by the tail. For example... Figure 7B As shown, the long transmission member 20 may include a package 2301 disposed at the tail extension 224 and penetrated by the tail 2112. The package 2301 is configured to position the solder balls 2115 of the tail 2112. Figure 8B As shown, the short transmission member 30 may include an encapsulation member 326, which is disposed at the tail protrusion 324 and is penetrated by the tail portion 3112 (e.g., Figure 8D(As clearly shown). Package 326 is configured to position the solder ball (not shown) of tail 3112.

[0213] In some exemplary embodiments, grounding pins may be formed on the edges of the front and / or rear housings that constitute the tail protrusion. For example... Figure 7B As shown, in the long shielding shell 220, a grounding pin 225 can be formed at the edge of the rear shell 222 constituting the tail protrusion 224. In some embodiments, pairs of grounding pins are provided at both sides of the rear shell 222 constituting the tail protrusion 224, and a single grounding pin is provided at the rear edge of the rear shell 222 constituting the tail protrusion 224. Those skilled in the art will understand that the structure and number of grounding pins formed at the edge of the rear shell 222 constituting the tail protrusion 224 are not limited thereto. Although in Figure 7B No grounding pin is provided at the edge of the tail protrusion 224 of the front housing 221. However, those skilled in the art may provide one or more grounding pins at the edge of the tail protrusion 224 of the front housing 221 according to actual needs.

[0214] like Figure 8B As shown, in the short shielding shell 320, a grounding pin 325 can be formed on the edge of the rear shell 322 constituting the tail protrusion 324. In some embodiments, a pair of grounding pins 325 are provided on both sides of the rear shell 322 constituting the tail protrusion 324, and a single grounding pin 325 is provided on the rear edge of the rear shell 322 constituting the tail protrusion 324 (e.g., Figure 8D (As shown). Furthermore, as... Figure 8B As shown, a single grounding pin is provided at the edge of the tail protrusion 324 of the front housing 321. Those skilled in the art will understand that the structure and number of grounding pins formed at the edge of the tail protrusion 324 of the rear housing 321 are not limited thereto.

[0215] In some exemplary embodiments, the long transmission member 20 and the short transmission member 30 may also include grounding members, which are connected to the portion of the front housing corresponding to the protrusion of the mating part. The grounding member may have a grounding member opening corresponding to the protrusion of the mating part and grounding contact portions located on opposite sides of the grounding member opening.

[0216] like Figure 7BAs shown, the long transmission member 20 may include a grounding member 230, which is connected to the portion of the front housing 221 corresponding to the mating protrusion 223. The grounding member 230 may have a grounding member opening 2201 corresponding to the mating protrusion 223 and grounding contact portions located on opposite sides of the grounding member opening. In some embodiments, the grounding member 230 may be connected to the portion of the front housing 221 corresponding to the mating protrusion 223 by, for example, laser welding (in the laser welding area 2321). Those skilled in the art will understand that any other suitable method may be used to connect the grounding member to the portion of the front housing corresponding to the mating protrusion, and the present invention is not limited thereto.

[0217] like Figure 8B As shown, the short transmission member 30 may include a grounding member 330, which is connected to the portion of the front housing 321 corresponding to the mating protrusion 323. For example... Figure 9B As shown, the grounding member 330 may have a grounding member opening 3301 corresponding to the mating portion protrusion 323 and grounding contact portions 332 located on opposite sides of the grounding member opening 3301. In some embodiments, the grounding member 330 may be connected to the portion of the front housing 321 corresponding to the mating portion protrusion 323 by, for example, laser welding (in the laser welding area 3321). Those skilled in the art will understand that any other suitable method may be used to connect the grounding member to the portion of the front housing corresponding to the mating portion protrusion, and the present invention is not limited thereto.

[0218] In some exemplary implementations, such as Figure 7B and Figure 9B As shown, the grounding contact can be an elastic element capable of elastic deformation in a direction perpendicular to the protruding surface of the mating portion of the front housing. This allows it to maintain ideal insertion and retention forces for the inserted adapter card without applying undesirable excessive force to the adapter card when the user removes it, thus preventing damage to the grounding contact. Therefore, the grounding contact of this grounding member can reliably electrically connect and securely mechanically fix the adapter card inserted into the groove of the insulating housing with a simple design structure.

[0219] In this electrical connector of the present invention, from the contact area (the mating area of ​​the transmission element) to the solder joint (the area where the tail of the transmission element is joined), the signal pins are surrounded by GND pads or completely covered by a shielding shell, thereby constraining the differential pair on all four sides by ground conductors. In other words, in the electrical connector of the present invention, the grounding contact of the grounding member and the shielding shell can be disposed around the signal terminals (the mating area and tail of the transmission element), thereby producing the desired shielding effect on signal transmission and minimizing crosstalk caused by signal differentials used for data transmission at the signal terminals, thereby achieving the desired signal integrity performance.

[0220] In some exemplary embodiments, in addition to Figures 7A to 9B Besides the grounding member shown, the grounding members included in the long transmission member 20 and the short transmission member 30 can also adopt various other different structural designs. In these different implementations, the mating portion of the two transmission members can be constrained by the grounding member on at least both sides, thereby minimizing unwanted signal crosstalk.

[0221] The following is combined with Figures 10A to 12B The structure of the grounding component in different implementations of the short transmission component 30 is described in detail. The grounding component of the long transmission component 20 of this utility model can be selected from, for example... Figures 10A to 12B This is one of three different implementations of the grounding member of the short transmission member 30 shown. In some embodiments, the grounding members of the long transmission member 20 and the short transmission member 30 can adopt the same structural design. In other embodiments, the grounding member of the long transmission member 20 can be selected as... Figures 10A to 12B The structure shown is one of the three grounding components and is different from the grounding component of the short transmission component 30.

[0222] like Figure 10A and Figure 10B In some exemplary embodiments, the grounding member 331 of the short transmission member 30 is connected between adjacent short transmission members 30. The grounding member 331 may have an elongated body 3311, on which a grounding contact portion 3312 is provided.

[0223] In some exemplary implementations, such as Figure 10BAs shown, a protrusion 3313 is provided on the body 3311 in a direction perpendicular to the length direction of the body 3311 of the grounding member 331. The protrusion 3313 can be connected to the front housing 321. In some embodiments, the grounding member 331 can be connected to the portion of the front housing 321 corresponding to the mating protrusion 323 by, for example, laser welding (laser welding area 3314 provided on the protrusion 3313). Those skilled in the art will understand that any other suitable method can be used to connect the grounding member to the portion of the front housing corresponding to the mating protrusion, and the present invention is not limited thereto.

[0224] In alternative implementations, such as Figure 11A and Figure 11B As shown, the short shielding shell 320 is composed of a grounding member 3211 and a rear shell 3221, with a mating part protruding 3210 formed in the grounding member 3211 (e.g., Figure 11C As shown in the enlarged view, a tail protrusion 3241 is formed at the position corresponding to the tail after the grounding member 3211 and the rear housing 3221 are combined (as shown in the enlarged view). Figure 11B (As shown). The long shielding shell 220 of this invention can have a structural design similar to the short shielding shell 320, in which the grounding component can also serve as the front shell. In some embodiments, the grounding component of this design in the long shielding shell 220 can have the same... Figures 11A to 11C The grounding member 3211 shown is similar to and can be connected to the rear housing 222 (e.g. Figure 7B The structure matches the design shown. Therefore, in the electrical connector of this invention, the GND pin is integrated with the front housing of the shielding box (i.e., the integrated grounding component). This implementation of the electrical connector simplifies the manufacturing process and saves costs.

[0225] In some exemplary implementations, such as Figure 11B As shown, the grounding member 3211 is a component combined with multiple rear housings 3221, and mating part protrusions 3210 are formed at positions on the grounding member 3211 corresponding to multiple mating parts (e.g., Figure 11C (As shown). In some exemplary embodiments, such as Figure 11C As shown, a grounding member setting port 3213 is formed in the grounding member 3211 at a position corresponding to the adjacent rear housing 3221, and a grounding contact portion 3214 is provided in the grounding member setting port 3213.

[0226] In some exemplary implementations, such as Figure 11CAs shown, the grounding contact 3214 is an elastic element. This elastic element can elastically deform in the direction perpendicular to the surface of the mating protrusion of the grounding member 3211, thereby maintaining ideal insertion and retention forces for the inserted adapter card without applying undesirable excessive force to the adapter card when the user removes it, which could damage the grounding contact. Therefore, the grounding contact of this grounding member can reliably electrically connect and firmly mechanically fix the adapter card inserted into the groove of the insulating housing with a simple design structure.

[0227] In alternative implementations, such as Figure 12A As shown, the grounding member 3211 is a component combined with multiple rear housings 3221. Mating protrusions 3210 are formed at positions on the grounding member 3211 corresponding to multiple mating portions. This structure is consistent with... Figures 11A to 11C The structures shown are the same. Figure 12A and Figure 12B The difference in the grounding component is that the grounding contact portion 3214 may include a flexible body 3215 and a grounding contact element 3216 embedded in the flexible body 3215. In some exemplary embodiments, such as Figure 12B As shown, the contact surface of the grounding contact 3216 is formed as a corrugated surface. By adopting this structural design in which the grounding contact is embedded in the flexible body and the contact surface is set as a corrugated surface, a more reliable connection with the grounding pad of the adapter card can be provided, so as to maintain ideal insertion force and retention force for the inserted adapter card, without applying undesirable large force to the adapter card when the user removes the adapter card, which would damage the grounding contact.

[0228] The following is for reference. Figure 3 , Figure 7B and Figure 8B The assembly process of the electrical connector is described. The assembly steps of the electrical connector according to this invention may include the steps described below. The long transmission member 210 is installed into the transmission member positioning block 213 (in some embodiments, the long transmission member 210 may be integrally formed with the transmission member positioning block), and the long transmission member 210 installed in the corresponding positioning block is installed into the corresponding rear housing 222. The front housing 221 is installed onto the corresponding rear housing 222, such that the mating portions 2111 and 2121 protrude from the mating portion protrusion 223 of the front housing of the long transmission member 210 (e.g., ...). Figure 7A (As shown) and the tail portion protrudes from the tail extension opening 223. The package 2301 is then attached to the exposed tail portions 2112 and 2122 in the tail extension opening, thereby connecting the tail portions 2112 and 2122 to the corresponding solder balls at the bottom, thus forming the assembled long transmission component 20. Reference Figure 8BThe assembly steps for the short transmission member 30 are similar to those for the long transmission member 20, and will not be described again here. The grounding members 230 and 330 are connected to the portion of the front housing corresponding to the protruding part of the mating section, for example, by laser welding (in the laser welding area). Figure 7A As shown, this forms a transmission component assembly 40 with a grounding component installed. The long transmission component 20 and the short transmission component 30 in the transmission component assembly 40 are inserted into the corresponding long shield housing receiving chamber 71 and short shield housing receiving chamber 72, respectively, and the stop member 11 is installed on both sides of the insulating housing 10. Furthermore, the long signal terminal 81 and the short signal terminal 82 of the low-speed signal section are installed into the terminal positioning block 90 and then into a separate chamber 75 that accommodates the low-speed signal terminal. The electrical connector 100 is then connected to the printed circuit board 300, the adapter card 200 is inserted along the insertion direction into the groove 110 of the insulating housing 10 of the electrical connector 100, and the locking member 60 is placed in the receiving grooves 120 on both sides of the insulating housing 10 along the length direction and inserted into the opening 35 provided on the printed circuit board (e.g., ...). Figure 14A As shown, the electrical connector 100 is reliably connected and secured to the printed circuit board 300. It should be understood that the assembly steps of the electrical connector of this invention are not limited to the order described herein, and embodiments of this invention can be implemented in orders other than those described herein. Furthermore, the assembly steps for the electrical connector are not limited to those described above, but may include other steps not explicitly listed or inherent to the assembly process. All alternatives, modifications, and equivalents that do not depart from the inventive concept of this invention are included within the scope of this invention.

[0229] Some exemplary embodiments of this utility model also provide a transmission component for the electrical connector 100. Specifically, the transmission component can be respectively as follows: Figure 3 The long transmission component 20 and the short transmission component 30 are shown.

[0230] In some embodiments, the transmission component of the electrical connector may include a transmission element and a shielding shell that houses the transmission element. The transmission element may include a first transmission element and a second transmission element. The first transmission element and the second transmission element may each include a mating portion and a tail portion. The shielding shell has a mating portion protrusion and a tail portion protrusion.

[0231] like Figure 7A As shown, the transmission component of the electrical connector 100 may include a transmission element and a shielding shell 220 for housing the transmission element. For example... Figure 7BAs shown, the transmission component may include a first transmission component 211 and a second transmission component 212. The first transmission component 211 and the second transmission component 212 may each include a mating part and a tail part. The shielding shell 220 has a mating part protrusion 223 extending from the mating part and a tail protrusion 224 extending from the tail part.

[0232] like Figure 7A and Figure 8A As shown, the transmission component of the electrical connector 100 may include a transmission element and a shielding shell 320 for housing the transmission element. For example... Figure 8B and Figure 8C As shown, the transmission component may include a first transmission component 311 and a second transmission component 312. The first transmission component 311 and the second transmission component 312 may each include a mating part and a tail part. The shielding shell 320 has a mating part protrusion 323 extending from the mating part and a tail protrusion 324 extending from the tail part.

[0233] In some exemplary embodiments, the distance between the center line of the first transmission member in the longitudinal direction and the center line of the second transmission member in the longitudinal direction can be 0.6 mm.

[0234] like Figure 6A and Figure 6B As shown, in the long transmission member 20, the distance P between the center line of the first transmission member 211 in the length direction and the center line of the second transmission member 212 in the length direction can be 0.6 mm. In the short transmission member 30, the distance between the center line of the first transmission member 311 in the length direction and the center line of the second transmission member 312 in the length direction can be 0.6 mm (not shown).

[0235] In some exemplary embodiments, the transmission member may further include a transmission member positioning block, which is penetrated and positioned by the transmission member.

[0236] like Figure 7B As shown, the transmission member 20 may further include a transmission member positioning block 213, which is penetrated and positioned by the transmission member 20. Figure 8B As shown, the transmission member 30 may also include a transmission member positioning block 313, which is penetrated and positioned by the transmission member 30.

[0237] In some exemplary embodiments, the transmission member may further include an encapsulation provided at the tail protrusion and penetrated by the tail.

[0238] like Figure 7BAs shown, the transmission component 20 may further include a package 2301, which is disposed at the tail protrusion 224 and is penetrated by the tail. In some exemplary embodiments, grounding pins 225 may be formed at the edges of the front housing 221 and the rear housing 222 that constitute the tail protrusion 224, respectively.

[0239] like Figure 8B As shown, the transmission component 30 may further include an encapsulation 326 disposed at the tail protrusion 324, and the encapsulation 323 is penetrated by the tail. In some exemplary embodiments, grounding pins 325 may be formed at the edges of the front housing 321 and the rear housing 322 constituting the tail protrusion 324, respectively.

[0240] Electrical connectors can use differential signaling to transmit signals from a first electronic system to a second electronic system. A pair of conductors is used for signal transmission. One conductor in the pair is driven by a first voltage, and the other conductor is driven by a voltage complementary to the first voltage. The voltage difference between the two conductors represents the signal. Electrical connectors can include multiple pairs of conductors to transmit multiple signals. To control the impedance of these conductors and reduce crosstalk between signals, a ground conductor (i.e., a grounding element) is required for each pair of conductors.

[0241] In some exemplary embodiments, a grounding (GND) member having multiple contacts (grounding contacts) is welded to the upper surface of the shielding shell. In some exemplary embodiments, the transmission member may further include a grounding member connected to a portion of the front housing corresponding to the mating protrusion, and the grounding member may have a grounding member opening corresponding to the mating protrusion and grounding contacts located on opposite sides of the grounding member opening.

[0242] like Figure 7B As shown, the transmission member 20 may further include a grounding member 230. The grounding member 230 is connected to the portion of the front housing 221 corresponding to the mating protrusion. The grounding member 230 may have a grounding member opening 2201 corresponding to the mating protrusion 224 and grounding contact portions 232 located on opposite sides of the grounding member opening. Figure 8B and Figure 9B As shown, the transmission member 30 may further include a grounding member 330. The grounding member 330 is connected to the portion of the front housing 321 corresponding to the mating protrusion. The grounding member 330 may have a grounding member opening 3301 corresponding to the mating protrusion 324 and grounding contact portions 332 located on opposite sides of the grounding member opening.

[0243] In this type of electrical connector, from the contact area (the mating area of ​​the transmission element) to the solder joint (the area where the tail of the transmission element is joined), the signal pins are surrounded by GND pads or completely covered by a shielding shell, thereby constraining the differential pair on all four sides by ground conductors. In other words, in this type of electrical connector, the grounding contact of the grounding member and the shielding shell can be arranged around the signal terminals (the mating area and tail of the transmission element), thereby producing the desired shielding effect on signal transmission and minimizing crosstalk caused by the differential signals used for data transmission at the signal terminals, thus achieving the desired signal integrity performance. In particular, the coupled differential pairs all adopt a hook-shaped design, which helps to reduce stubs to obtain better signal integrity (SI) performance.

[0244] In some exemplary embodiments, the grounding contact portion can be an elastic element capable of elastic deformation in a direction perpendicular to the surface of the mating portion protrusion of the front housing.

[0245] like Figure 7B As shown, the grounding contact 232 can be an elastic element, which can elastically deform in a direction perpendicular to the surface of the mating protrusion 223 of the front housing 221; for example Figure 8B and Figure 9B As shown, the grounding contact 332 can be an elastic element capable of elastic deformation in a direction perpendicular to the surface of the mating protrusion 323 of the front housing 321. This allows it to maintain ideal insertion and retention forces for the inserted adapter card without applying undesirable excessive force to the adapter card when the user removes it, thus preventing damage to the grounding contact. Therefore, the grounding contact of this grounding member can reliably electrically connect and securely mechanically fix the adapter card inserted into the groove of the insulating housing with a simple design structure.

[0246] In some exemplary embodiments, the transmission member may further include a grounding member connected to a portion of the front housing corresponding to the mating protrusion, and the grounding member may have a grounding member opening corresponding to the mating protrusion and grounding contact portions located on opposite sides of the grounding member opening.

[0247] In some exemplary implementations, such as Figure 10A and Figure 10BAs shown, the transmission member 30 may further include a grounding member 331. The grounding member 331 is connected between adjacent transmission members 30, and the grounding member 331 may have an elongated body 3311, on which a grounding contact portion 3312 is provided. In an implementation of a long transmission member, the transmission member 20 may have the same grounding member (not shown) as the grounding member 331 of the transmission member 30. This grounding member is connected between adjacent transmission members 20, and the grounding member may have an elongated body, on which a grounding contact portion is provided.

[0248] In some exemplary embodiments, a protrusion may be provided in a direction perpendicular to the length direction of the body of the grounding member, and the protrusion is connected to the front housing. For example... Figure 10A and Figure 10B As shown, a protrusion 3313 may be provided on the body 3311 in a direction perpendicular to the length direction of the body 3311 of the grounding member 331, and the protrusion 3313 is connected to the front housing. The grounding member of the transmission member 20 may have the same structure (not shown), and will not be described in detail here.

[0249] In some exemplary embodiments, the shielding shell is composed of a grounding member and a rear shell, with a mating portion protruding from the grounding member and a tail protruding from the position corresponding to the tail portion after the grounding member and the rear shell are combined.

[0250] like Figures 11A to 12B As shown, the shielding shell 320 is composed of a grounding member 3211 and a rear shell 3221. A mating portion protrusion 3210 is formed on the grounding member 3211, and a tail protrusion 3241 is formed at a position corresponding to the tail portion after the grounding member 3211 and the rear shell 3221 are combined. In some exemplary embodiments, the grounding member 3211 is a component combined with multiple rear shells 3221, and mating portion protrusions 3210 are formed at positions corresponding to multiple mating portions on the grounding member 3211. In some exemplary embodiments, a grounding member mounting port 3213 can be formed at a position on the grounding member 3211 corresponding to an adjacent rear shell 3221, and a grounding contact portion 3214 can be provided in the grounding member mounting port 3213. In some exemplary embodiments, the grounding contact portion 3214 can be an elastic member, capable of elastic deformation in a direction perpendicular to the plane where the mating portion protrusion 3210 of the grounding member 3211 is located. The long shielding shell 220 of this invention can have a structural design similar to the short shielding shell 320, in which the grounding component can also serve as the front shell. In some embodiments, the grounding component of this design in the long shielding shell 220 can have the same... Figures 11A to 12B The grounding member 3211 shown is similar to and can be connected to the rear housing 222 (e.g. Figure 7BThe structure shown is the matching structure.

[0251] In this structural design, the long and short shielding shells can be composed of grounding components and rear shells, respectively. The grounding component is combined with multiple rear shells, and mating protrusions are formed at positions corresponding to multiple mating parts on the grounding component. In this configuration, the front shell of the shielding shell is formed into a complete front shielding shell (e.g., by laser welding). That is, in this configuration, the grounding component and the front shell of the shielding shell are formed as a single piece, and the grounding component is combined with multiple rear shells to form a complete shielding shell. In this configuration, there is at least one GND pin between each differential signal pair. In one implementation, a grounding mounting port is formed in the grounding component at a position corresponding to an adjacent rear shell, and a grounding contact is provided at the grounding mounting port of the grounding component. That is, the GND pin is integrated with the front shell of the shielding box (i.e., the integrated grounding component). This implementation of the electrical connector simplifies the manufacturing process and saves costs.

[0252] In some exemplary embodiments, a grounding member mounting port may be formed at a position in the grounding member corresponding to the adjacent rear housing, and a grounding contact portion may be provided in the grounding member mounting port.

[0253] In alternative implementations, such as Figure 12A and Figure 12B As shown, the grounding contact 3214 may include a flexible body 3215 and a grounding contact 3216 embedded in the flexible body 3215. In some exemplary embodiments, the contact surface of the grounding contact 3216 may be formed as a corrugated surface. The grounding contact of the grounding member of the long shielding shell 220 of this invention may have the same structural design as the grounding contact of the short shielding shell 320 described above, and will not be repeated here. By adopting this structural design in which the grounding contact is embedded in the flexible body and the contact surface is set as a corrugated surface, a more reliable connection with the grounding pad of the adapter card can be provided, so as to maintain an ideal insertion force and retention force for the inserted adapter card, without applying undesirable large force to the adapter card when the user removes the adapter card, which would damage the grounding contact.

[0254] exist Figures 10A to 12B In the implementation shown, a special structural design is used for the grounding component. Both sides of the differential signal pair (including the first and second transmission components) have dual GND pins, and there are two rows of grounding contacts (a total of four grounding contacts) around the protruding part of the mating portion. In other words, the mating portion of the two transmission components can be constrained by the grounding component on at least both sides. This structural design minimizes unwanted signal crosstalk.

[0255] Further exemplary embodiments of this utility model provide a printed circuit board 300. The following describes... Figure 14A , Figure 15A and Figure 16 A printed circuit board 300 according to some embodiments of the present invention will be described. The surface of the printed circuit board 300 includes at least two columns of signal pads arranged along a first direction X. Each column of signal pads is formed by multiple signal pad groups spaced apart in the first direction X. The signal pad columns are also spaced apart and arranged side-by-side in a second direction Y perpendicular to the first direction X. Around each signal pad group, multiple ground pads are spaced apart in the direction surrounding the signal pad group. Each signal pad group includes two signal pads spaced apart. In this configuration, each signal pad group can be surrounded by multiple ground pads, thereby minimizing unwanted signal crosstalk.

[0256] Optionally, grounding pads may be provided on both sides of each signal pad group in the first direction and on both sides of each signal pad group in the second direction. In the printed circuit board of this invention, the signal pad group may include two signal pads spaced apart. In the printed circuit board of this invention, the printed circuit board includes at least two columns of signal pads. In some embodiments, the printed circuit board of this invention may include two columns of the signal pads (e.g., ...). Figure 16 The printed circuit board 300 shown herein can be adapted to a single row of high-density electrical connectors. In some embodiments, the printed circuit board of this invention may include four columns of signal pads (e.g., Figure 14A and Figure 15A As shown, such a printed circuit board can accommodate dual-row high-density electrical connectors. Therefore, the overall size of the electrical connector can be significantly reduced in length, increasing the number of signal pads within a limited space. This allows electrical connectors using this printed circuit board to be provided as compact, robust, and high-density connectors.

[0257] Those skilled in the art will understand that the present invention Figure 16 The printed circuit board 300 shown is for single-row high-density electrical connectors. Figure 14A or Figure 15A This is obtained by omitting one column of signal pads on each side of the printed circuit board in the second direction Y. The following is combined with... Figure 14A A detailed description is provided for printed circuit boards used in dual-row high-density electrical connectors.

[0258] For clarity and conciseness, Figure 14A and Figure 15AIn the diagram, the length direction of the printed circuit board is marked as the first direction X, and the direction perpendicular to the first direction (i.e., the width direction of the printed circuit board) is marked as the second direction Y.

[0259] like Figure 14A As shown, the surface of the printed circuit board may include at least two columns of signal pads arranged along a first direction X. In some embodiments, the surface of the printed circuit board may include four columns of signal pads. For example, the surface of the printed circuit board on a first side in a second direction Y may include a first column of signal pads 3010 and a second column of signal pads 3020; the surface of the printed circuit board on a second side in the second direction may include a third column of pads 3030 and a fourth column of pads 3040.

[0260] The first signal pad array 3010 can be formed by arranging multiple signal pad groups 3011 spaced apart in the first direction X. The second signal pad array 3020 can be formed by arranging multiple signal pad groups 3021 spaced apart in the first direction X. The first signal pad array 3010 and the second signal pad array 3020 are arranged side-by-side with a gap in a second direction Y perpendicular to the first direction X. Around each of the signal pad groups, multiple ground pads can be arranged at intervals in the direction surrounding the signal pad group. The signal pad group includes two signal pads arranged at intervals.

[0261] In some embodiments, the plurality of ground pads may include a first column of ground pads 3050 located between the first signal pad column 3010 and the second signal pad column 3020, a second column of ground pads 3055 located on the side of the first signal pad column 3010 opposite to the first column of ground pads 3050, and a third column of ground pads 3056 located on the side of the second signal pad column 3020 opposite to the first column of ground pads 3050. Continue to refer to Figure 14A In the first signal pad row 3010, a first signal pad group 3011 consisting of two signal pads is arranged in a row, and a first ground pad is formed on both sides of the first signal pad group 3011 in the first direction X and on both sides of the second direction Y. In the second signal pad row 3020, a second signal pad group 3021 consisting of two signal pads is arranged in a row, and a second ground pad is formed on both sides of the second signal pad group 3021 in the first direction X and on both sides of the second direction Y.

[0262] like Figure 14AAs shown, the first column of ground pads 3050 is composed of multiple third ground pads 3051, each of which is located between adjacent first signal pad groups 3011 and second signal pad groups 3021. That is, the third ground pads 3051 are the common ground pads of the first signal pad groups 3011 and the second signal pad groups 3021 in the second direction.

[0263] Continue to refer to Figure 14A The second column of ground pads 3055 is composed of a plurality of fourth ground pads 30551, each fourth ground pad 30551 being adjacent to the first signal pad group 3011 of the first signal pad column 3010; and the third column of ground pads 3056 is composed of a plurality of fifth ground pads 30561, each fifth ground pad 30561 being adjacent to the second signal pad group 3021 of the second signal pad column 3020.

[0264] refer to Figure 14A The surface of the printed circuit board may have a third row of pads 3030 and a fourth row of pads 3040 on a second side in a second direction. The third row of signal pads 3030 may be formed by multiple signal pad groups 3031 arranged at intervals in the first direction X. The fourth row of signal pads 3040 may be formed by multiple signal pad groups 3041 arranged at intervals in the first direction X. The third and fourth rows of signal pads 3030 and 3040 are arranged side-by-side at intervals in a second direction Y perpendicular to the first direction X. Around each of the signal pad groups, multiple ground pads may be arranged at intervals in the direction surrounding the signal pad group. Each signal pad group includes two signal pads arranged at intervals.

[0265] In some embodiments, the plurality of ground pads may include a fourth row ground pad 3060 located between the third row of pads 3030 and the fourth row of pads 3040, a fifth row of ground pads 3065 located on the opposite side of the third row of pads 3030 to the fourth row of ground pads 3060, and a sixth row of ground pads 3066 located on the opposite side of the fourth row of pads 3040 to the fourth row of ground pads 3060. Continue to refer to... Figure 14A In the third row of pads 3030, a third signal pad group 3031, consisting of two signal pads, is arranged in a row, and a sixth ground pad is formed on both sides of the third signal pad group 3031 in the first direction X and on both sides of the second direction Y. In the fourth row of pads 3040, a fourth signal pad group 3041, consisting of two signal pads, is arranged in a row, and a seventh ground pad is formed on both sides of the fourth signal pad group 3041 in the first direction X and on both sides of the second direction Y.

[0266] like Figure 14AAs shown, the fourth column of ground pads 3060 is composed of multiple eighth ground pads 3061, each of which is positioned between adjacent third signal pad groups 3031 and fourth signal pad groups 3041. In other words, the eighth ground pad 3061 is a shared ground pad for the third signal pad group 3031 and the fourth signal pad group 3041 in the second direction Y.

[0267] Continue to refer to Figure 14A The fifth column of ground pads 3065 is composed of a plurality of ninth ground pads 30651, each of which is adjacent to the third signal pad group 3031 of the third column of pads 3030; and the sixth column of ground pads 3066 is composed of a plurality of tenth ground pads 30661, each of which is adjacent to the fourth signal pad group 3041 of the fourth column of pads 3040.

[0268] Optionally, the signal pads can be formed in a circular shape and / or a quadrilateral shape. Optionally, the ground pads located between the signal pad groups in the first direction X can be formed in an "I" shape, and the ground pads located on both sides of the signal pad column in the first direction X can be formed in a U-shape. Optionally, the ground pads located on both sides of the signal pad group in the second direction Y can be formed in a rectangular shape.

[0269] In some exemplary embodiments, signal pads 3011, 3021 may be formed in a circular shape (e.g. Figure 14A (As shown). In some exemplary embodiments, such as Figure 14A As shown, the first ground pad 3070 located between the first signal pad groups 3011 and the second ground pad 3080 located between the second signal pad groups 3021 can be formed into an "I" shape. The first ground pad 3070 located at the outermost ends of the first signal pad group 3010 and the second ground pad 3080 located at the outermost ends of the second signal pad group 3020 can be formed into a U-shape.

[0270] In some exemplary implementations, such as Figure 14A As shown, the third grounding pad 3051, the fourth grounding pad 30551 and the fifth grounding pad 30561 can be formed into a rectangular shape.

[0271] In some exemplary embodiments, signal pads 3031 and 3041 can be formed in a circular shape, such as... Figure 14A As shown. In some exemplary embodiments, such as Figure 14AAs shown, the sixth ground pad 3085 located between the third signal pad groups 3031 and the seventh ground pad 3095 located between the fourth signal pad groups 3041 can be formed into an "I" shape; and the sixth ground pad 3086 located at the outermost ends of the third row of pads 3030 and the seventh ground pad 3096 located at the outermost ends of the fourth row of pads 3040 can be formed into a U shape.

[0272] In some exemplary embodiments, the eighth ground pad 3061, the ninth ground pad 30651, and the tenth ground pad 30661 may be formed in a rectangular shape.

[0273] The signal pads in the printed circuit board of this invention can be formed as follows: Figure 14A The circular shape shown can also be formed as follows: Figure 15A The quadrilateral shape shown, or a combination thereof. Figure 15A Printed circuit boards and Figure 14A The printed circuit boards have the same structural design, differing only in the shape of the signal pads. For simplicity, in Figure 15A The text omits the part related to "and". Figure 14A The same reference numerals for the same parts in the figures.

[0274] The shape of the signal pads in the printed circuit board can be adapted to the pin-shaped and / or flat quadrilateral shape of the transmitter portion of the electrical connector. Optionally, the circular shape of the signal pads in the printed circuit board can be adapted to the pin-shaped shape of the transmitter portion for soldering with the pads using ball grid array (BGA) technology. Optionally, the quadrilateral shape of the signal pads in the printed circuit board can be adapted to the flat quadrilateral shape of the transmitter portion for soldering with the pads using surface mount technology (SMT). This invention, by configuring the signal pads of the printed circuit board and the transmitter portion of the transmitter to have a compatible structure, allows for packaging using different semiconductor packaging technologies, further improving the freedom of structural design for the electrical connector.

[0275] In some embodiments, the surface of the printed circuit board may further include at least two columns of low-speed signal pads arranged along a first direction X, wherein the low-speed signal pad columns are formed by a plurality of low-speed signal pads spaced apart in the first direction X, and the low-speed signal pad columns are arranged side-by-side spaced apart in a second direction Y. In some embodiments, such as Figure 16 As shown, the surface of the printed circuit board 200 may include two rows of the low-speed signal pads to accommodate a single row of high-density electrical connectors. In some embodiments, such as Figure 14A and Figure 15AAs shown, the surface of the printed circuit board 200 may include four rows of low-speed signal pads to accommodate dual-row high-density electrical connectors. The low-speed signal pads and high-speed signal pads of the printed circuit board are isolated from each other and are configured with two different densities. Therefore, the printed circuit board of this invention can be adapted to mate with electrical connectors configured with different densities, further ensuring that electrical connectors using this printed circuit board can be provided as compact, robust, single-row or dual-row high-density (and different density) electrical connectors.

[0276] In some exemplary implementations, such as Figure 14A As shown, the surface of the printed circuit board may include low-speed signal pads, which may include a first row of low-speed signal pads 31, a second row of low-speed signal pads 32, a third row of low-speed signal pads 33, and a fourth row of low-speed signal pads 34. The first row of low-speed signal pads 31 to the fourth row of low-speed signal pads 34 may be arranged at equal intervals by rectangular pads. The low-speed signal pads and high-speed signal pads of the printed circuit board are isolated from each other and are configured to have two different densities. Therefore, the printed circuit board of this invention can be adapted to mate with electrical connectors configured with different densities, further ensuring that electrical connectors using this printed circuit board can be provided as compact, robust, high-density (and different density) electrical connectors.

[0277] The following is combined with Figure 13 The adapter card 200 of this utility model is described below. The adapter card 200 can be inserted into a recess 110 of the insulating housing 10 of an electrical connector 100. The electrical connector has two rows of signal contacts (i.e., mating portions of the long and short transmission elements) and ground contacts (grounding contacts) along each sidewall of the recess. When the adapter card is inserted into the recess 110, the two rows of signal contacts (i.e., mating portions of the long and short transmission elements) and ground contacts (grounding contacts) provided on each sidewall of the recess directly mate with the conductive pads of the adapter card. In this way, signals and their associated reference voltages can be transmitted between the printed circuit board PCB 300 and the adapter card 200. The adapter card 200 may have conductive pads, referred to as "gold fingers," on one or both sides.

[0278] like Figure 13As shown, the surface of the adapter card 200 may include a first signal pad row 2010 and a second signal pad row 2020. In the first signal pad row 2010, first signal pad groups 2011, each consisting of two signal pads, are arranged in a row, and ground pads 2070 are formed between the first signal pad groups 2011 in the first signal pad row 2010. In the second signal pad row 2020, second signal pad groups 2021, each consisting of two signal pads, are arranged in a row, and ground pads 2070 are formed between the second signal pad groups 2021 in the second signal pad row 2020. Figure 13 As shown, the ground pad 2070 in the first signal pad row 2010 and the ground pad 2070 in the second signal pad row 2020 are common ground pads. Those skilled in the art will understand that the ground pads in the first signal pad row 2010 and the second signal pad row 2020 can also be configured as separates, and this invention is not limited thereto.

[0279] In some exemplary embodiments, signal pads 2021 and 2022 can be formed in a rectangular shape, thereby increasing the contact area to provide a stable signal connection. In some exemplary embodiments, such as... Figure 13 As shown, the ground pad 2070 in the first signal pad row 2010 and the ground pad 2070 in the second signal pad row 2020 can be formed in a rectangular shape. In particular, the length of the rectangular shape of the ground pad is greater than twice the length of the signal pad, and the width of the rectangular shape of the ground pad is greater than the width of the signal pad, thereby providing a larger contact area for the ground contact portion.

[0280] In this configuration, ground pads are provided on one or both sides of the signal pads, thereby minimizing unwanted signal crosstalk. Each side of the adapter card of this invention includes two rows of signal pads and a common row of ground pads, thus significantly reducing the overall length and increasing the number of signal pads within a limited space. This allows the electrical connector connected to the adapter card to be provided as a compact, robust, and high-density connector.

[0281] The surface of the adapter card may include low-speed signal pads, which may include a first row of low-speed signal pads 21 and a second row of low-speed signal pads 22. The first row of low-speed signal pads 21 and the second row of low-speed signal pads 22 may be arranged at equal intervals by rectangular pads. The low-speed signal pads and high-speed signal pads of the adapter card are isolated from each other and are configured to have two different densities.

[0282] Those skilled in the art will understand that in a single-row high-density electrical connector, the connector has a single row of signal contacts (mating portions of the transmission element) and ground contacts (grounding contacts) along each sidewall of the recess. In such an embodiment, as... Figure 16 As shown, the surface of the adapter card 200 may only have a first row of signal pads and a first row of low-speed signal pads (i.e., the first row is omitted). Figure 13 One of the signal pad columns in the middle), its structural design is similar to Figure 13 The first signal pad column and the first low-speed signal pad column shown have the same structural design, which will not be described in detail here.

[0283] Therefore, the adapter card of this invention can be adapted to mate with electrical connectors configured with different densities, further ensuring that the electrical connectors adapted to the adapter card can be provided as compact, robust, high-density (and different-density) electrical connectors.

[0284] Those skilled in the art should understand that, for clarity, not all features of the actual specific embodiments are described and shown in the specification and drawings. In addition, to avoid unnecessary details obscuring the technical solutions of interest to this utility model, only the arrangement structure closely related to the technical content of this utility model is described and shown in the specification and drawings, while other details that are not closely related to the technical content of this utility model and are known to those skilled in the art are omitted.

[0285] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the various embodiments of this utility model have been described in detail above with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of the utility model. However, the technical solutions claimed by this utility model can be implemented even without these technical details and various changes and modifications based on the above embodiments. The division of the various embodiments above is for ease of description and should not constitute any limitation on the specific implementation of this utility model. The various embodiments can be combined with and referenced by each other without contradiction.

[0286] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0287] It should be understood that the terms "inner", "outer", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0288] Although this disclosure has been described with reference to exemplary embodiments, it should be understood that this disclosure is not limited to the specific embodiments described and shown herein. Various changes can be made to the exemplary embodiments by those skilled in the art without departing from the scope defined by the claims of this disclosure.

[0289] The features mentioned and / or shown in the foregoing description of exemplary embodiments of this disclosure may be combined in the same or similar manner with one or more other embodiments, combined with features in other embodiments, or substituted for corresponding features in other embodiments. Such combinations or substitutions should also be considered as including within the scope of protection of this disclosure.

[0290] It should also be understood that, unless expressly instructed otherwise, in any method described herein that includes more than one step or action, the order of the steps or actions of the method is not necessarily limited to the order in which the steps or actions of the method are listed.

Claims

1. An electrical connector, characterized in that, The electrical connector includes: An insulating housing having a groove extending along the length of the insulating housing; Multiple transmission components, including transmission elements and a shielding shell housing the transmission elements; Multiple transmission components are arranged along the length of the insulating housing on the two inner walls of the groove to form an insertion space.

2. The electrical connector according to claim 1, characterized in that, The plurality of transmission components include: Multiple long transmission components, including long transmission elements and long shielding shells housing the long transmission elements; and Multiple short transmission components, including short transmission elements and short shielding shells that house the short transmission elements; The long transmission member and the short transmission member constitute a transmission member group in such a way that the long transmission member covers the short transmission member.

3. The electrical connector according to claim 2, characterized in that, The long transmission member and the short transmission member each include a mating part and a tail part.

4. The electrical connector according to claim 3, characterized in that, The tail section is configured to be soldered to pads using surface mount technology.

5. The electrical connector according to claim 3, characterized in that, The tail section is configured to connect to the pads via ball grid array technology.

6. The electrical connector according to claim 3, characterized in that, The contact surface of the tail is a flat quadrilateral shape, which is used to solder to the pads using surface mount technology.

7. The electrical connector according to claim 3, characterized in that, The long shielding shell and the short shielding shell each have a mating part protrusion and a tail protrusion, respectively.

8. The electrical connector according to any one of claims 2 to 7, characterized in that, The long shielding shell has an L-shaped cross-section along the height direction, and the short shielding shell has a long strip-shaped cross-section along the height direction. The short shielding shell is disposed in the L-shaped recess of the long shielding shell, which together with the short shielding shell forms a transmission component assembly.

9. The electrical connector according to any one of claims 2 to 7, characterized in that, The electrical connector also includes a lossy member disposed at the bottom of the groove, the lossy member being used to connect the short shield shells together.

10. The electrical connector according to any one of claims 2 to 7, characterized in that, The electrical connector includes a low-speed signal section and a high-speed signal section separate from the low-speed signal section, the high-speed signal section including a plurality of long transmission components and a plurality of short transmission components.

11. The electrical connector according to any one of claims 1 to 7, characterized in that, The insulating housing has locking members for fixing the electrical connector and receiving grooves into which the locking members are inserted on both sides along the length direction of the insulating housing.

12. The electrical connector according to any one of claims 2 to 7, characterized in that, The insulating housing also includes a stop member disposed on the outermost side of the insulating housing, which covers and secures the long shielding shell.

13. The electrical connector according to any one of claims 2 to 7, characterized in that, The long transmission component includes a first long transmission component and a second long transmission component, and the short transmission component includes a first short transmission component and a second short transmission component.

14. The electrical connector according to claim 13, characterized in that, The distance between the center line of the first long transmission component and the center line of the second long transmission component along their length is 0.6 mm; the distance between the center line of the first short transmission component and the center line of the second short transmission component along their length is 0.6 mm.

15. The electrical connector according to any one of claims 2 to 7, characterized in that, The spacing between the center lines of adjacent long transmission components along their length is 2.10 mm, and the spacing between the center lines of adjacent short transmission components along their length is 2.10 mm.

16. The electrical connector according to claim 7, characterized in that, The long shielding shell and the short shielding shell each include a front shell and a rear shell, with the mating part protrusion formed in the front shell and the tail protrusion formed at the position corresponding to the tail after the front shell and the rear shell are combined.

17. The electrical connector according to claim 16, characterized in that, The long transmission component and the short transmission component each include a transmission component positioning block, which is penetrated and positioned by the long transmission component and the short transmission component, respectively.

18. The electrical connector according to claim 17, characterized in that, The long transmission component and the short transmission component each include a package, which is disposed at the tail protrusion and is respectively penetrated by the tail.

19. The electrical connector according to claim 18, characterized in that, Grounding pins are formed on the edges of the front housing and / or the rear housing that constitute the tail protrusion.

20. The electrical connector according to claim 16, characterized in that, The long transmission member and the short transmission member each include a grounding member, the grounding member being connected to the portion of the front housing corresponding to the protrusion of the mating part. The grounding member has a grounding member opening corresponding to the protrusion of the mating part and grounding contact parts located on opposite sides of the grounding member opening.

21. The electrical connector according to claim 20, characterized in that, The grounding contact portion is an elastic element that can elastically deform in a direction perpendicular to the surface of the protrusion of the mating portion of the front housing.

22. The electrical connector according to claim 16, characterized in that, The long transmission component and the short transmission component each include a grounding component, the grounding component being connected between adjacent long transmission components and between adjacent short transmission components. The grounding member has an elongated body, and a grounding contact portion is provided on the body of the grounding member.

23. The electrical connector according to claim 22, characterized in that, A protrusion is provided on the body in a direction perpendicular to the length direction of the body of the grounding member, and the protrusion is connected to the front housing.

24. The electrical connector according to claim 7, characterized in that, The long shielding shell and the short shielding shell are respectively composed of a grounding member and a rear shell. The mating part protrusion is formed on the grounding member, and the tail protrusion is formed at the position corresponding to the tail after the grounding member and the rear shell are combined.

25. The electrical connector according to claim 24, characterized in that, The grounding member is a component that is combined with the plurality of rear housings, and the mating part protrusions are formed at the positions of the grounding member corresponding to the plurality of mating parts.

26. The electrical connector according to claim 25, characterized in that, A grounding member mounting port is formed at a position corresponding to the adjacent rear housing in the grounding member, and a grounding contact portion is provided in the grounding member mounting port.

27. The electrical connector according to claim 26, characterized in that, The grounding contact portion is an elastic element that can elastically deform in a direction perpendicular to the surface where the mating portion of the grounding member protrudes.

28. The electrical connector according to claim 26, characterized in that, The grounding contact portion includes a flexible body and a grounding contact element embedded in the flexible body.

29. The electrical connector according to claim 28, characterized in that, The contact surface of the grounding contact is formed as a corrugated surface.

30. A transmission component of an electrical connector, characterized in that, The transmission component of the electrical connector includes a transmission element and a shielding shell that houses the transmission element. The transmission component includes a first transmission component and a second transmission component, wherein the first transmission component and the second transmission component each include a mating portion and a tail portion. The shielding shell has a mating part protrusion and a tail protrusion.

31. The transmission component of the electrical connector according to claim 30, characterized in that, The tail section is configured to be soldered to pads using surface mount technology.

32. The transmission component of the electrical connector according to claim 30, characterized in that, The tail section is configured to connect to the pads via ball grid array technology.

33. The transmission component of the electrical connector according to claim 30, characterized in that, The contact surface of the tail is a flat quadrilateral shape, which is used to solder to the pads using surface mount technology.

34. The transmission component of the electrical connector according to claim 30, characterized in that, The distance between the center line of the first transmission component along its length and the center line of the second transmission component along its length is 0.6 mm.

35. The transmission component of the electrical connector according to claim 30, characterized in that, The shielding shell includes a front shell and a rear shell, with the mating part protrusion formed in the front shell and the tail protrusion formed at the position corresponding to the tail after the front shell and the rear shell are combined.

36. The transmission component of the electrical connector according to claim 35, characterized in that, The transmission component further includes a transmission component positioning block, which is penetrated and positioned by the transmission component.

37. The transmission component of the electrical connector according to claim 36, characterized in that, The transmission component further includes an encapsulation component disposed at the tail protrusion and penetrated by the tail.

38. The transmission component of the electrical connector according to claim 37, characterized in that, Grounding pins are formed on the edges of the front housing and the rear housing that constitute the tail protrusion.

39. The transmission component of the electrical connector according to claim 35, characterized in that, The transmission component further includes a grounding component, which is connected to the portion of the front housing corresponding to the protrusion of the mating part, and The grounding member has a grounding member opening corresponding to the protrusion of the mating part and grounding contact parts located on opposite sides of the grounding member opening.

40. The transmission component of the electrical connector according to claim 39, characterized in that, The grounding contact portion is an elastic element that can elastically deform in a direction perpendicular to the surface of the protrusion of the mating portion of the front housing.

41. The transmission component of the electrical connector according to claim 35, characterized in that, The transmission component further includes a grounding component, which is connected between adjacent transmission components. The grounding member has an elongated body, and a grounding contact portion is provided on the body of the grounding member.

42. The transmission component of the electrical connector according to claim 41, characterized in that, A protrusion is provided on the body in a direction perpendicular to the length direction of the body of the grounding member, and the protrusion is connected to the front housing.

43. The transmission component of the electrical connector according to claim 30, characterized in that, The shielding shell is composed of a grounding member and a rear shell. The mating part protrusion is formed on the grounding member, and the tail protrusion is formed at the position corresponding to the tail after the grounding member and the rear shell are combined.

44. The transmission component of the electrical connector according to claim 43, characterized in that, The grounding member is a component that is combined with the plurality of rear housings, and the mating part protrusions are formed at the positions of the grounding member corresponding to the plurality of mating parts.

45. The transmission component of the electrical connector according to claim 44, characterized in that, A grounding member mounting port is formed at a position corresponding to the adjacent rear housing in the grounding member, and a grounding contact portion is provided in the grounding member mounting port.

46. ​​The transmission component of the electrical connector according to claim 45, characterized in that, The grounding contact portion is an elastic element that can elastically deform in a direction perpendicular to the surface where the mating portion of the grounding member protrudes.

47. The transmission component of the electrical connector according to claim 45, characterized in that, The grounding contact portion includes a flexible body and a grounding contact element embedded in the flexible body.

48. The transmission component of the electrical connector according to claim 47, characterized in that, The contact surface of the grounding contact is formed as a corrugated surface.

49. The transmission component of the electrical connector according to claim 30, characterized in that, The transmission component includes: Multiple long transmission components, including long transmission elements and long shielding shells housing the long transmission elements; and Multiple short transmission components, including short transmission elements and short shielding shells that house the short transmission elements.

50. A printed circuit board, characterized in that, The surface of the printed circuit board includes at least two columns of signal pads arranged along a first direction. Each column of signal pads is formed by multiple signal pad groups arranged at intervals along the first direction. The signal pad columns are also arranged side-by-side at intervals along a second direction perpendicular to the first direction. Around each of the signal pad groups, a plurality of grounding pads are arranged at intervals in the direction surrounding the signal pad group.

51. The printed circuit board according to claim 50, characterized in that, The surface of the printed circuit board includes four columns of signal pads.

52. The printed circuit board according to claim 50 or 51, characterized in that, The signal pad group includes two signal pads arranged at intervals.

53. The printed circuit board according to claim 52, characterized in that, The grounding pads are respectively provided on both sides of the first direction and on both sides of the second direction of each signal pad group.

54. The printed circuit board according to claim 50, characterized in that, The signal pads are formed in a circular and / or quadrilateral shape.

55. The printed circuit board according to claim 50, characterized in that, The grounding pad located between the signal pad groups in the first direction is formed in an "I" shape. The ground pads located on both sides of the signal pad array in the first direction are formed in a U-shape.

56. The printed circuit board according to claim 50, characterized in that, The grounding pads located on both sides of the signal pad group in the second direction are formed in a rectangular shape.

57. The printed circuit board according to claim 50, characterized in that, The surface of the printed circuit board also includes at least two columns of low-speed signal pads arranged along the first direction. The columns of low-speed signal pads are formed by multiple low-speed signal pads arranged at intervals in the first direction, and the columns of low-speed signal pads are arranged side by side at intervals in the second direction.

58. The printed circuit board according to claim 57, characterized in that, The surface of the printed circuit board includes four rows of the low-speed signal pads.

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