CN109546384B - High-speed connector assembly, socket connector and grounding plate - Google Patents
High-speed connector assembly, socket connector and grounding plate Download PDFInfo
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- CN109546384B CN109546384B CN201811539407.6A CN201811539407A CN109546384B CN 109546384 B CN109546384 B CN 109546384B CN 201811539407 A CN201811539407 A CN 201811539407A CN 109546384 B CN109546384 B CN 109546384B
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- 230000013011 mating Effects 0.000 claims description 14
- 210000001503 joint Anatomy 0.000 claims description 8
- 208000029154 Narrow face Diseases 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008054 signal transmission Effects 0.000 abstract description 4
- 239000002184 metal Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
- H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
- H01R12/716—Coupling device provided on the PCB
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
- H01R13/6461—Means for preventing cross-talk
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6581—Shield structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6581—Shield structure
- H01R13/6585—Shielding material individually surrounding or interposed between mutually spaced contacts
- H01R13/6586—Shielding material individually surrounding or interposed between mutually spaced contacts for separating multiple connector modules
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention discloses a high-speed connector assembly, a socket connector and a grounding plate. The grounding plate is provided with a plurality of grounding arms and a plurality of shielding sheets, and is arranged in a serpentine shape, so that the front end butting part of each pair of differential signal socket terminals can be in a U-shaped surrounding state, and the electromagnetic shielding effect is provided. In addition, the grounding plates are provided with a plurality of elastic fingers, and the adjacent grounding plates are connected through the elastic fingers to form a common grounding path, so that signal crosstalk between differential pairs is further reduced. In addition, the grounding plate can be connected with the grounding shell of the plug connector to form a complete grounding path, so that more stable and reliable signal transmission quality is ensured.
Description
Technical Field
The invention relates to the technical field of connectors, in particular to a high-speed connector assembly, a socket connector and a grounding plate, wherein the front end of the grounding plate is provided with a plurality of grounding arms and a plurality of shielding sheets which are arranged in a winding shape, so that the grounding effect of the grounding plate is fully exerted, and the signal crosstalk is reduced.
Background
The back board connector is widely applied to communication technology, is a connector commonly used for large-scale communication equipment, ultra-high performance servers, supercomputers, industrial computers and high-end storage equipment, and mainly has the functions of connecting a single board with a back board, forming a 90-degree vertical structure between the single board and the back board, transmitting high-speed differential signals or single-ended signals and transmitting large current.
With the continuous improvement of communication technology, the requirements on the data transmission rate are also increasing. High-speed backplanes are part of the physical connections between modules in a typical electronic system, and complex systems rely on wires, traces and connectors on the backplane to handle large amounts of high-speed data streams. The high-speed backplane connector plays an important role in communication among a plurality of backplane modules, so that technical research on the backplane connector is required to be increased, and the signal rate requirement of a high-speed communication system is met.
The subject of this study is how to ensure the reliability of the mechanical connection between the high-speed backplane receptacle connector and the header connector and good electrical contact performance.
Disclosure of Invention
One of the objects of the present invention is to provide a high-speed connector assembly capable of ensuring excellent signal transmission between a socket connector and a plug connector.
Another objective of the present invention is to provide a receptacle connector, in which a ground plate is mounted on one side of each terminal module, and adjacent ground plates can be connected together and grounded together to reduce signal crosstalk.
Another object of the present invention is to provide a grounding plate, in which a plurality of shielding plates and a plurality of spring plates are formed at the front end of the grounding plate and arranged in a meandering shape, so as to fully exert the grounding effect and reduce the signal crosstalk.
Other objects and advantages of the present invention will be further appreciated from the technical features disclosed in the present invention.
In order to achieve the above purpose, the invention adopts the following technical scheme: a high speed connector assembly includes a plug connector and a receptacle connector. The plug connector includes a plurality of pairs of differential signal plug terminals, each pair of differential signal plug terminals being surrounded by a ground shell half. The socket connector at least comprises a plurality of terminal modules which are arranged in parallel and fixed together; each terminal module at least comprises an insulating frame, a terminal assembly positioned in the insulating frame and a grounding plate arranged on one side of the insulating frame; wherein the terminal assembly includes a plurality of ground terminals and a plurality of pairs of differential signal receptacle terminals; each pair of differential signal socket terminals includes two differential signal socket terminals; each differential signal receptacle terminal has a base portion, a front-end mating portion extending forwardly from one end of the base portion, and a bottom-end mounting portion extending downwardly from the other end of the base portion. The grounding plate comprises a vertical plate which can be fixed to one side of the insulating frame, a plurality of grounding arms which are formed on the vertical edge of the vertical plate and extend forwards after being bent, and a plurality of sheet-shaped shielding sheets; wherein the grounding arms and the shield plates are arranged in a serpentine shape; and the two front end butting parts of each pair of differential signal socket terminals are surrounded by two grounding arms and one shielding sheet in a U-shaped mode. When the socket connector is in butt joint with the plug connector, the front end butt joint parts of the differential signal terminals can be electrically connected with the corresponding plug terminals, and the grounding arms and the shielding sheets can be connected with the corresponding grounding shells.
In one embodiment, a ground contact portion located at the end of one of the ground arms of each ground plate and protruding toward the shield plate, and an elastic finger protruding away from the shield plate are formed on one of the ground arms; the elastic finger of one grounding plate can touch the corresponding shielding sheet of the other grounding plate.
In one embodiment, the terminal assembly is positioned in a vertical plane with a ground terminal disposed above and below each pair of differential signal receptacle terminals; the front end butt joint part of each differential signal socket terminal is bent from one end of the base part to one side and then separated from the vertical plane and extends forwards; the front end butt joint part of the differential signal socket terminal comprises a long elastic arm extending forwards, a short elastic arm extending forwards, a first signal contact part formed at the tail end of the long elastic arm and a second signal contact part formed at the tail end of the short elastic arm; wherein the first signal contact part and the second signal contact part are arranged along a horizontal straight line; both signal contact parts face the same side and are perpendicular to the vertical plane in a protruding mode; the ground contact portion, the first signal contact portion and the second signal contact portion all protrude in the same direction, and the elastic finger is opposite to the protruding direction of the ground contact portion.
In one embodiment, each pair of differential signal plug terminals of the plug connector comprises two plug terminals, each plug terminal is linear and has a mating end and a tail end, and the cross section of the mating end is rectangular and has two wide faces parallel to each other and two narrow faces parallel to each other; each grounding shell of the plug connector comprises a U-shaped part and a tail part, wherein the U-shaped part is provided with two parallel narrow walls and a wide wall for connecting the two narrow walls; when the socket connector is in butt joint with the plug connector, the first signal contact part and the second signal contact part of each differential signal socket terminal slide towards the tail end along one wide surface of the corresponding plug terminal in sequence and finally are abutted against the wide surface; each shielding sheet of the grounding plate can be abutted against the wide wall of the U-shaped part of the corresponding grounding shell; the grounding contact part of each grounding arm is propped against the end edge of the narrow wall of the U-shaped part of the corresponding grounding shell.
In order to achieve the above purpose, the present invention also adopts the following technical scheme: a socket connector includes an insulating housing and a plurality of terminal modules arranged in parallel and fixed in the insulating housing. Each terminal module at least comprises an insulating frame, a terminal assembly positioned in the insulating frame and a grounding plate arranged on one side of the insulating frame; the terminal assembly is positioned in a vertical plane and comprises a plurality of grounding terminals and a plurality of pairs of differential signal socket terminals; a ground terminal is arranged above and below each pair of differential signal socket terminals; each pair of differential signal socket terminals includes two differential signal socket terminals; each differential signal socket terminal has a base portion located in the vertical plane, a front-end mating portion bent from one end of the base portion to one side out of the vertical plane and extending forward, and a bottom-end mounting portion extending downward from the other end of the base portion and located in the vertical plane. The grounding plate comprises a vertical plate which can be fixed to one side of the insulating frame, a plurality of grounding arms which are formed on the vertical edge of the vertical plate and extend forwards after being bent, and a plurality of sheet-shaped shielding sheets; wherein the grounding arms and the shield plates are arranged in a serpentine shape; in the terminal module, each grounding arm of the grounding plate extends into the front of the corresponding grounding terminal and is in linear arrangement with the front end butting part of the differential signal socket terminal along the vertical direction; each shielding sheet of the grounding plate faces the front end butting part of the corresponding pair of differential signal socket terminals.
In one embodiment, a ground contact portion located at the end of one of the ground arms of each ground plate and protruding toward the shield plate, and an elastic finger protruding away from the shield plate are formed on one of the ground arms; the elastic finger of one grounding plate can touch the corresponding shielding sheet of the other grounding plate.
In one embodiment, the front end butting portion of the differential signal socket terminal includes a long elastic arm extending forward, a short elastic arm extending forward, a first signal contact portion formed at the end of the long elastic arm, and a second signal contact portion formed at the end of the short elastic arm; wherein the first signal contact part and the second signal contact part are arranged along a horizontal straight line; both signal contact parts face the same side and are perpendicular to the vertical plane in a protruding mode; the ground contact portion, the first signal contact portion and the second signal contact portion all protrude in the same direction, and the elastic finger is opposite to the protruding direction of the ground contact portion.
In one embodiment, in the terminal module, the vertical plate of the grounding plate is formed with a plurality of flaps protruding toward the terminal assembly, and each grounding terminal is formed with a plurality of locking holes, and the flaps can be snapped into the locking holes of the corresponding grounding terminal.
In one embodiment, the terminal module further includes a metal plate mounted on the other side of the insulating frame, and can be fixedly connected with the grounding terminal.
In order to achieve the above purpose, the present invention also adopts the following technical scheme: a grounding plate is applied to a socket connector. The grounding plate comprises a vertical plate, a plurality of grounding arms and a plurality of sheet-shaped shielding sheets, wherein the grounding arms are formed on the vertical edge of the vertical plate and extend forwards after being bent; wherein a shielding sheet is arranged between every two adjacent grounding arms, the grounding arms are bent towards one side of the vertical plate and then extend forwards, and the shielding sheets are bent towards the other side of the vertical plate and then extend forwards, so that the grounding arms and the shielding sheets are arranged in a serpentine shape.
Compared with the prior art, the invention provides a high-speed connector assembly, a socket connector and a grounding plate, wherein the grounding plate is provided with a plurality of grounding arms and a plurality of shielding sheets and is arranged in a serpentine shape, so that the front end butting part of each pair of differential signal socket terminals can be in a U-shaped surrounding state, and the electromagnetic shielding effect is provided. In addition, the grounding plates are provided with a plurality of elastic fingers, and the adjacent grounding plates are connected through the elastic fingers to form a common grounding path, so that signal crosstalk between differential pairs is further reduced. In addition, the grounding plate can be connected with the grounding shell of the plug connector to form a complete grounding path, so that more stable and reliable signal transmission quality is ensured.
Drawings
Fig. 1 is a schematic perspective view of a high-speed connector assembly according to the present invention.
Fig. 2 is a schematic view of a high-speed connector assembly according to the present invention.
Fig. 3 is a schematic view of the high-speed connector assembly of the present invention in a disassembled configuration along another direction.
Fig. 4 is a schematic structural view of the terminal module of the present invention.
Fig. 5 is a schematic diagram of a disassembled structure of the terminal module shown in fig. 4.
Fig. 6 is a schematic view showing a structure of the terminal module according to the present invention along another direction.
Fig. 7 is a schematic diagram of a disassembled structure of the terminal module shown in fig. 6.
Fig. 8 is a schematic perspective view of one terminal assembly of the socket connector of the present invention.
Fig. 9 is a schematic diagram of a pair of differential signal receptacle terminals of the terminal assembly of fig. 8 in electrical contact with a pair of receptacle terminals.
Fig. 10 is a schematic perspective view of a grounding plate according to the present invention.
Fig. 11 is a schematic diagram of a simulation of the ground plate of fig. 10 contacting a ground shell of a plug connector.
Fig. 12 is a schematic view of the terminal module shown in fig. 4 after removing the metal plate.
Fig. 13 is a schematic diagram showing a positional relationship and a connection relationship between a ground plate and a terminal assembly in the terminal module shown in fig. 4.
Fig. 14 is a schematic diagram showing the positional relationship between two adjacent ground plates according to the present invention.
Fig. 15 is a top view of two adjacent ground plates shown in fig. 14 to clearly show the connection relationship between the two ground plates.
Fig. 16 is a side view of two adjacent ground plates shown in fig. 14 to clearly show the connection relationship of the two ground plates.
The reference numerals in the above figures are explained as follows:
high speed connector assembly 1 receptacle connector 10
Differential signal plug terminals 21, 21a, 21b of plug connector 20
Tail end 211 of mating end 210
Broad face 212 narrow face 213
Grounding shell 22U portion 220
Tail 221 narrow wall 222
Wide wall 223 insulation cover 30
Insulation frame 41 of terminal module 40
Ground plates 43, 43a, 43b of terminal assembly 42
Vertical edge 4300 of vertical plate 430
Grounding arms 431, 431a shield pieces 432, 432b
Ground contact 433 spring fingers 434, 434a
Fold 435 metal plate 44
End 450 of ground terminal 45
Foot 451 keyhole 452
Differential signal receptacle terminals 46, 46a, 46b
Front end butt joint 461 of base 460
Bottom end mounting portion 462 long resilient arm 463
First signal contact 4630 short spring arm 464
The second signal contact 4640 is vertical to the plane 50.
Detailed Description
The following description of the embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. The directional terms referred to in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., refer only to the directions of the attached drawings. Accordingly, directional terminology is used to describe and understand the invention and is not limiting of the invention.
Referring to fig. 1, 2 and 3, the high-speed connector assembly 1 of the present invention includes a socket connector 10 and a plug connector 20, wherein the socket connector 10 may be a right-angle connector with a plugging direction parallel to a horizontal circuit board (not shown) on which the socket connector 10 is mounted; the plug connector 20 may be a vertical header connector having a mating direction perpendicular to a vertical circuit board (not shown) on which the plug connector 20 is mounted.
As shown in fig. 3, the plug connector 20 has a plurality of pairs of differential signal plug terminals 21, and a plurality of ground shells 22, wherein each pair of differential signal plug terminals 21 is semi-surrounded by one ground shell 22.
As shown in fig. 3, each pair of differential signal plug terminals 21 includes two plug terminals 21a, 21b. As shown in fig. 9, each plug terminal 21a (21 b) is linear and has a mating end 210 and a tail end 211, wherein the cross section of the mating end 210 is rectangular and has two parallel broad faces 212 and two parallel narrow faces 213, and the two broad faces 212 are perpendicular to the two narrow faces 213. It should be noted that the narrow face 213 is actually the side edge of the mating end 210, or called a cut edge.
As shown in fig. 11, each grounding shell 22 includes a U-shaped portion 220 and a tail portion 221, and the U-shaped portion 220 has two parallel narrow walls 222 and a wide wall 223 connecting the two narrow walls 222. As shown in fig. 3, the U-shaped portion 220 of the grounding shell 22 surrounds the mating ends 210 of the corresponding two plug terminals 21a, 21b.
As shown in fig. 1, 2 and 3, the receptacle connector 10 includes an insulating housing 30 and a plurality of terminal modules 40 mounted in the insulating housing 30 and arranged side by side from left to right.
As shown in fig. 4, 5, 6 and 7, each terminal module 40 includes an insulating frame 41, a terminal assembly 42 disposed in the insulating frame 41, a ground plate 43 mounted on one side of the insulating frame 41, and a metal plate 44 mounted on the other side of the insulating frame 41. In fig. 4 and 7, the terminal assembly 42 is detached from the insulating frame 41 for clarity of the structure of the terminal assembly 42. In practice, the terminal assembly 42 and the insulating frame 41 are integrally combined by injection molding. In addition, in the present embodiment, the grounding plate 43 and the metal plate 44 are detachably mounted on both sides of the insulating frame 41, respectively, to provide electromagnetic shielding.
As shown in fig. 8, the terminal assembly 42 is positioned in a vertical plane 50, and the terminal assembly 42 includes a plurality of ground terminals 45 positioned in the vertical plane 50 and a plurality of pairs of differential signal receptacle terminals 46 positioned in the vertical plane 50. One ground terminal 45 is arranged above and below each pair of differential signal receptacle terminals 46. In this embodiment, each pair of differential signal receptacle terminals 46 includes two differential signal receptacle terminals 46a, 46b, and each ground terminal 45 has a width substantially greater than the width of each differential signal receptacle terminal 46a, 46 b.
As shown in fig. 8, each ground terminal 45 is generally L-shaped having an end 450 at its front end perpendicular to the vertical plane 50 and a foot 451 at its bottom end.
The structure of the receptacle terminals of the present invention will be described in detail below with reference to one of the pairs of differential signal receptacle terminals 46.
As shown in fig. 8, each differential signal receptacle terminal 46a (46 b) has an L-shaped base portion 460 located in the vertical plane 50, a front end abutting portion 461 bent from one end of the base portion 460 to one side out of the vertical plane 50 and extending forward, and a bottom end mounting portion 462 extending downward from the other end of the base portion 460 and located in the vertical plane 50.
As shown in fig. 8, the front end abutting portion 461 includes a long elastic arm 463 extending forward, a short elastic arm 464 extending forward, a first signal contact portion 4630 formed at the end of the long elastic arm 463, and a second signal contact portion 4640 formed at the end of the short elastic arm 464. Wherein the first signal contact portion 4630 and the second signal contact portion 4640 are arranged along a horizontal line. Both signal contacts 4630, 4640 project towards the same side and perpendicularly to the vertical plane 50. In the terminal assembly 42, the bottom end mounting portions 462 of all the differential signal receptacle terminals 46a, 46b are horizontally aligned with the leg portions 451 of all the ground terminals 45.
As shown in fig. 9, when the receptacle connector 10 shown in fig. 1 is electrically mated with the header connector 20, the first signal contact portion 4630 and the second signal contact portion 4640 of each differential signal receptacle terminal 46a (46 b) can slide along one of the wide faces 212 of the mating end 210 of the corresponding header terminal 21a (21 b) toward the tail end 211 and finally abut against the wide face 212, so as to achieve the dual-contact purpose. By this mating, the pair of socket terminals and the corresponding pair of plug terminals of the plug connector 20 form a reliable mechanical connection and have excellent electrical contact performance.
The structure of the ground plate 43 of the present invention will be described in detail below by taking one of the ground plates 43 as an example.
As shown in fig. 10, the grounding plate 43 includes a vertical plate 430 that can be fixed to one side of the insulating frame 41, a plurality of grounding arms 431 formed on a vertical side 4300 of the vertical plate 430 and extending forward after being bent, and a sheet-like shielding sheet 432. Between every adjacent two grounding arms 431, there is a shielding sheet 432, and the grounding arms 431 and the shielding sheet 432 are arranged in a serpentine shape (or referred to as W-shape, S-shape). In this embodiment, the grounding arm 431 is located at the front edge of the vertical plate 430 and is bent toward one side of the vertical plate 430 and then extends forward, and the shielding sheet 432 is located at the front edge of the vertical plate 430 and is bent toward the other side of the vertical plate 430 and then extends forward, thereby being arranged in a serpentine shape.
As shown in fig. 10, at least one grounding arm 431 has a grounding contact 433 formed at its distal end and protruding toward the shielding plate 432, and a resilient finger 434 protruding away from the shielding plate 432. In the present embodiment, the ground plate 43 has four ground arms 431, wherein only one ground arm 431a, such as the ground arm located uppermost or lowermost, is not formed with an elastic finger, and the remaining three ground arms 431 are provided with elastic fingers 434.
As shown in fig. 11, when the receptacle connector 10 and the plug connector 20 shown in fig. 1 are electrically mated, each shielding piece 432 of the ground plate 43 can abut against the wide wall 223 of the U-shaped portion 220 of the corresponding ground shell 22. In addition, the grounding contact portion 433 of each grounding arm 431 is pressed against the end edge of the narrow wall 222 of the U-shaped portion 220 of the corresponding grounding shell 22.
In the present embodiment, as shown in fig. 7, the first signal contact portion 4630 and the second signal contact portion 4640 of the differential signal socket terminals 46 in each terminal module 40 protrude toward the ground plate 43 of the terminal module 40. The ground contact 433 of the ground plate 43 protrudes in the same direction as the first and second signal contacts 4630, 4640. The resilient fingers 434 on the ground plate 43 are opposite to the protruding direction of the ground contact 433.
Further, as shown in fig. 10, a plurality of flaps 435 protruding toward the terminal assembly 42 (see fig. 7) are formed on the vertical plate 430. As shown in fig. 9, a plurality of locking holes 452 are formed in each of the ground terminals 45 of the terminal assembly 42.
As shown in fig. 12 and 13, which show the specific mating relationship of the ground plate 43 in the terminal module 40 and the terminal assembly 42. Specifically, in the same terminal module 40, each grounding arm 431 of the grounding plate 43 extends forward of the corresponding grounding terminal 45 and is aligned in a vertical direction with the front-end abutting portion 461 of each differential signal socket terminal 46 of the terminal assembly 42. Meanwhile, each grounding arm 431 makes contact with the end 450 of the corresponding grounding terminal 45 (not shown). As shown in fig. 13, the two front-end butting portions 461 of each pair of differential signal socket terminals 46 are each located between the two grounding arms 431 of the grounding plate 43, and the two front-end butting portions 461 face the same shielding plate 432. Therefore, in the same terminal module 40, the two front end butting portions 461 of each pair of differential signal socket terminals 46 are each surrounded by the two grounding arms 431 and the one shielding piece 432 in a U-shape. In addition, the folded sheets 435 on the grounding plate 43 are all snapped into the locking holes 452 of the corresponding grounding terminals 45, so that the grounding plate 43 and all the grounding terminals 45 in the terminal module 40 are connected together to form a common grounding path. In the present embodiment, a portion of the locking holes 452 is used to fix the grounding plate 43, and another portion of the locking holes 452 is used to fix the metal plate 44, so as to form a grounding path among the grounding plate 43, the metal plate 44 and the grounding terminal 45. In fact, as shown in fig. 11 and 13, a similar locking hole (not shown) is also formed in the ground plate 43, into which the end 450 (see fig. 8) of the corresponding ground terminal 45 is inserted, thereby connecting the ground plate 43 and the ground terminal 45.
As shown in fig. 14, 15, and 16, in two adjacent terminal modules 40, two adjacent ground plates 43 can be connected together to form a common ground path, thereby reducing signal crosstalk. As shown in fig. 15 and 16, each of the resilient fingers 434a of one ground plate 43a can touch or press against a corresponding shield 432b of the other ground plate 43 b. By this connection, all the ground plates 43 of the receptacle connector 10 of the present invention are connected to form a complete ground path.
As described above, in the high-speed connector assembly 1 and the receptacle connector 10 according to the present invention, the plurality of grounding arms 431 and the plurality of shielding pieces 432 are formed at the front ends of the grounding plates 43, and one shielding piece 432 is disposed between two adjacent grounding arms 431, and the grounding arms 431 and the shielding pieces 432 are arranged in a serpentine shape, so that the front-end abutting portions 461 of each pair of differential signal receptacle terminals 46 can be formed in a U-shaped surrounding state, thereby providing electromagnetic shielding. In addition, the grounding plates 43 of the present invention are provided with a plurality of elastic fingers 434, and the adjacent grounding plates 43 are connected one by the elastic fingers 434 to form a common grounding path, thereby further reducing signal crosstalk between differential pairs. In addition, the grounding plate 43 of the present invention can be connected with the grounding shell 22 of the plug connector 20, and can form a complete grounding path, thereby ensuring more stable and reliable signal transmission quality.
Claims (1)
1. A high speed connector assembly comprising a plug connector and a receptacle connector, characterized in that:
the plug connector includes a plurality of pairs of differential signal plug terminals, each pair of differential signal plug terminals being surrounded by one ground shell half; each pair of differential signal plug terminals of the plug connector comprises two plug terminals, each plug terminal is linear and is provided with a matching end and a tail end, the cross section of the matching end is rectangular and is provided with two wide faces and two parallel narrow faces which are parallel to each other; each grounding shell comprises a U-shaped part and a tail part, wherein the U-shaped part is provided with two parallel narrow walls and a wide wall connecting the two narrow walls; and
the socket connector at least comprises a plurality of terminal modules which are arranged in parallel and fixed together; each terminal module at least comprises an insulating frame, a terminal assembly positioned in the insulating frame and a grounding plate arranged on one side of the insulating frame; wherein the terminal assembly includes a plurality of ground terminals and a plurality of pairs of differential signal receptacle terminals; each pair of differential signal socket terminals includes two differential signal socket terminals; each differential signal socket terminal has a base portion, a front-end mating portion extending forwardly from one end of the base portion, and a bottom-end mounting portion extending downwardly from the other end of the base portion;
the grounding plate comprises a vertical plate capable of being fixed to one side of the insulating frame, a plurality of grounding arms formed on the vertical edge of the vertical plate and extending forwards after being bent, and a plurality of sheet-shaped shielding sheets; wherein the grounding arms and the shield plates are arranged in a serpentine shape; the two front end butting parts of each pair of differential signal socket terminals are surrounded by two grounding arms and one shielding sheet in a U-shaped mode;
wherein, a grounding contact part which is positioned at the tail end of one grounding arm of each grounding plate and protrudes towards the shielding sheet and an elastic finger which protrudes towards the direction away from the shielding sheet are formed on one grounding arm of each grounding plate; the elastic finger of one grounding plate can touch the corresponding shielding sheet of the other grounding plate;
the terminal assembly is positioned in a vertical plane, and the front end butting part of the differential signal socket terminal comprises a long elastic arm extending forwards, a short elastic arm extending forwards, a first signal contact part formed at the tail end of the long elastic arm and a second signal contact part formed at the tail end of the short elastic arm; wherein the first signal contact part and the second signal contact part are arranged along a horizontal straight line; both signal contact parts face the same side and are perpendicular to the vertical plane in a protruding mode;
the grounding contact part, the first signal contact part and the second signal contact part are all protruded in the same direction, and the elastic finger is opposite to the protruding direction of the grounding contact part;
when the socket connector is in butt joint with the plug connector, the first signal contact part and the second signal contact part of each differential signal socket terminal slide towards the tail end along one wide surface of the corresponding plug terminal in sequence and finally lean against the wide surface, so that the front butt joint part of the differential signal socket terminal can be electrically connected with the corresponding plug terminal; each shielding sheet of the grounding plate can be abutted against the wide wall of the U-shaped part of the corresponding grounding shell; the grounding contact part of each grounding arm is pressed against the end edge of the narrow wall of the U-shaped part of the corresponding grounding shell, so that the grounding arm and the shielding sheet can be connected with the corresponding grounding shell.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811539407.6A CN109546384B (en) | 2018-12-17 | 2018-12-17 | High-speed connector assembly, socket connector and grounding plate |
| TW108215762U TWM591270U (en) | 2018-12-17 | 2019-11-27 | High-speed connector assembly, socket connector and grounding plate |
| US16/709,950 US10931063B2 (en) | 2018-12-17 | 2019-12-11 | High speed connector assembly, socket connector and grounding plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811539407.6A CN109546384B (en) | 2018-12-17 | 2018-12-17 | High-speed connector assembly, socket connector and grounding plate |
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| Publication Number | Publication Date |
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| CN109546384A CN109546384A (en) | 2019-03-29 |
| CN109546384B true CN109546384B (en) | 2024-02-23 |
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| CN201811539407.6A Active CN109546384B (en) | 2018-12-17 | 2018-12-17 | High-speed connector assembly, socket connector and grounding plate |
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