CN211579022U

CN211579022U - Electric connector and electric connector assembly

Info

Publication number: CN211579022U
Application number: CN201922489830.6U
Authority: CN
Inventors: 刘朦; 萧世伟; 萧裕三; 张衍智; 陈玉科; 江志耀
Original assignee: Fu Ding Precision Industry Zhengzhou Co Ltd; Hongteng Precision Technology Co Ltd
Current assignee: Fu Ding Precision Industry Zhengzhou Co Ltd; Hongteng Precision Technology Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-25
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses an electric connector and subassembly thereof, the electric connector can cooperate with butt joint connector, the electric connector includes insulating casing, the terminal of fixing in insulating casing and the shielding piece of fixing in insulating casing, the terminal is arranged in pairs and is used for transmitting a pair of difference signal, the shielding piece includes two at least walls and shields in two directions at least the terminal is right, every extend a plurality of contact shell fragments on the wall, the contact shell fragment includes the orientation the terminal is to protruding interior contact shell fragment of stretching and to keeping away from the terminal is to the protruding outer contact shell fragment of stretching of direction. The utility model discloses an electric connector the contact shell fragment is including the orientation the terminal is to protruding interior contact shell fragment of stretching and to keeping away from the terminal is to the protruding outer contact shell fragment of stretching of direction to ground connection effect and then electric connector and electric connector assembly signal transmission have been optimized.

Description

Electric connector and electric connector assembly

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electric connector and electric connector module especially relate to a high-speed for backplate electric connector and electric connector assembly that communication field used.

[ background of the invention ]

U.S. patent No. 6,988,902, issued on 24.1.2006, discloses a combination of a plug electrical connector and a receptacle electrical connector, wherein the plug electrical connector and the socket electrical connector both comprise a plurality of rows of terminals, the terminals of each row comprise differential signal pairs and grounding terminals arranged between adjacent differential signal pairs, each differential signal pair of each row is staggered with the corresponding differential signal pair of the adjacent row, no metal shielding piece is arranged between the adjacent rows, although crosstalk can be reduced to some extent by the staggered arrangement of the differential pairs, transmission of lower differential signals of 6Gbps and below can be achieved, however, with the increase of the transmission speed of differential signals, the transmission speed of many pairs of differential signals has reached 25Gbps, and even higher, it has reached 56Gbps, so that it is difficult to satisfy the transmission of high-speed signals with such a simple misalignment arrangement.

Accordingly, there is a need for an improved electrical connector and electrical connector assembly that can transmit differential signaling at 56Gbps or higher.

[ Utility model ] content

The utility model discloses the technical problem that will solve is: the electric connector is used for optimizing the grounding connection effect and further improving signal transmission.

In order to solve the above problem, the utility model provides an electric connector, it can cooperate with the butt joint connector, electric connector includes insulating casing, the terminal of fixing in insulating casing and the shielding piece of fixing in insulating casing, the terminal is arranged in pairs and is used for transmitting a pair of difference signal, the shielding piece includes two at least walls and shields in two directions at least the terminal is right, every extend a plurality of contact shell fragments on the wall, the contact shell fragment includes the orientation the terminal is to protruding interior contact shell fragment of stretching and to keeping away from the terminal is to the protruding outer contact shell fragment of stretching of direction.

The specific implementation structure is as follows:

the shielding piece comprises a main wall and a pair of side walls extending from two sides of the main wall to the same direction, and the main wall and the pair of side walls shield the terminal pair from three directions.

Each side wall comprises a contact elastic sheet, and the main wall comprises a pair of contact elastic sheets arranged at intervals.

The contact spring pieces on the side walls are inner contact spring pieces

The contact elastic sheets on the main wall are all external contact elastic sheets.

The two terminals forming the terminal pair are coupled by narrow sides, the main wall of the shielding plate is opposite to the wide sides of the terminal pair, and the pair of side walls of the shielding plate is respectively opposite to the corresponding narrow sides of the terminal pair.

The shielding sheet is directly installed and fixed on the insulating shell.

The utility model discloses the technical problem that will solve is: an electrical connector module for optimizing the grounding connection effect and further improving the signal transmission is provided.

In order to solve the above problem, the utility model provides an electric connector assembly, its include the electric connector and with electric connector complex butting connector, the electric connector includes insulating casing, a plurality of terminal pairs of arranging the in line and being listed as of fixing and fixing in insulating casing arrange into corresponding line and a plurality of shielding pieces of being listed as, each terminal pair is used for transmitting a pair of difference signal, each shielding piece includes two at least walls and shields corresponding one at two directions at least the terminal pair, every extend a plurality of contact shell fragments on the wall, the contact shell fragment includes the orientation the terminal is to protruding interior contact shell fragment of stretching and to keeping away from the terminal is to the protruding outer contact shell fragment of stretching of direction.

The specific implementation structure is as follows:

the butting connector comprises a plurality of butting terminal modules which are arranged along the row direction, each butting terminal module comprises a shielding piece, the inner contact spring piece of the shielding piece in one row of the electric connector is in contact connection with the shielding piece in the corresponding butting terminal module, and the outer contact spring piece in the row is in contact connection with the shielding piece in the butting terminal module adjacent to the corresponding butting terminal module.

The terminal module comprises a first terminal module and a second terminal module matched with the first terminal module, the inner contact elastic sheet is in contact connection with the shielding piece in the first terminal module, and the outer contact elastic sheet is in contact connection with the shielding piece of the second terminal module in the adjacent terminal module.

Compared with the prior art, the utility model discloses an electric connector the contact shell fragment is including the orientation the terminal is to protruding interior contact shell fragment of stretching and to keeping away from the terminal is to the protruding outer contact shell fragment of stretching of direction to optimize ground connection effect and then promoted electric connector and electric connector subassembly signal transmission.

[ description of the drawings ]

Fig. 1 is a perspective view of an electrical connector according to the present invention separated from a circuit board on which the electrical connector is mounted.

Fig. 2 is a perspective view of the electrical connector shown in fig. 1 mounted on a circuit board unmated from the mating connector mounted on the mating circuit board.

Fig. 3 is a partially exploded view of the electrical connector shown in fig. 1.

Fig. 4 is a partially exploded view from another perspective of the electrical connector shown in fig. 3.

Fig. 5 is a partially exploded view of the docking connector and the docking circuit board shown in fig. 2.

Fig. 6 is a partially exploded view from another perspective of the docking connector and the docking circuit board shown in fig. 5.

Fig. 7 is an exploded view of a pair of adjacent terminal modules of the docking connector shown in fig. 5.

Fig. 8 is an exploded view from another perspective of a pair of adjacent terminal modules of the docking connector shown in fig. 7.

3 fig. 3 9 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 in 3 the 3 direction 3 a 3- 3 a 3 of 3 the 3 electrical 3 connector 3 of 3 fig. 32 3 mounted 3 on 3 a 3 circuit 3 board 3 for 3 mating 3 with 3 a 3 mating 3 connector 3 mounted 3 on 3 a 3 mating 3 circuit 3 board 3. 3

3 fig. 310 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 in 3 the 3 direction 3 a 3- 3 a 3 of 3 the 3 electrical 3 connector 3 of 3 fig. 32 3 mounted 3 on 3 a 3 circuit 3 board 3 for 3 mating 3 with 3 a 3 mating 3 connector 3 mounted 3 on 3 a 3 mating 3 circuit 3 board 3. 3

[ description of main element symbols ]

Electrical connector assembly 100 first electrical connector 1

Second electrical connector 2 first circuit board 3

Second circuit board 4 insulating housing 10

Bottom wall 11 side wall 12

Mounting hole 111 of accommodating space 13

Support wall 113 channel 115

Guide strip 121 terminal 20

Retaining portion 21 barb 211

Wide barb 215 terminal pair 22

Mounting portion 23 mounting leg 231

Contact 251 of cantilever 25

Slotted 253 shield blades 30

Main wall 31 main body portion 310

The side wall 33 contacts the spring 331

The first mounting part 332 contacts the protrusion 333

Contact dome 335 contact protrusion 337

Housing 40 retainer 494

Terminal module 50 first terminal module 51

Second terminal module 52 insulation body 60

Upper edge 62 of lower edge 61

Leading edge 63 and trailing edge 64

The catching rib 641 first side surface 66

Mounting groove 662 slot 665

Second side 67 signal terminals 70

Terminal pair 710 air gap 721

Butt end 73 mounting end 74

Middle 75 ground terminal 80

Ground mating end 83 first ground contact 831

Ground mounting end 84 transition 85

Connector 851 second ground contact 852

Ground plate 90 clamping piece 95

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

[ detailed description ] embodiments

As shown in fig. 1-10, the electrical connector assembly 100 of the present invention includes an electrical connector or first electrical connector 1 and a mating connector or second electrical connector 2 for mating with the first electrical connector 1. The first electric connector 1 is arranged on a circuit board or a first circuit board 3, the second electric connector 2 is arranged on a butt joint circuit board or a second circuit board 4, and the transmission speed of each channel of the first electric connector 1 and the second electric connector 2 can reach 112Gbps or even higher after the first electric connector 1 and the second electric connector are matched.

As shown in fig. 1-4, 9 and 10, the first electrical connector 1 includes an insulative housing 10, a number of terminals 20 held in the insulative housing 10, and a shielding plate 30 held in the insulative housing 10 for shielding the terminals. The terminals 20 are arranged in pairs for a number of differential pairs, each differential pair transmitting a pair of differential signals. The signal terminals 20 arranged in differential pairs are arranged in rows and columns in the insulative body 10. The shield plates 30 are arranged in corresponding rows and columns in the insulating housing 10.

The insulating housing 10 includes a bottom wall 11, a pair of side walls 12 extending from the same side of the bottom wall 11 and spaced from each other, and an accommodating space 13 defined by the bottom wall 11 and the two side walls 12. The bottom wall 11 includes a plurality of mounting holes 111 arranged in rows and columns through the bottom wall 11 for mounting the terminals 20 and the shielding plates 30. The bottom wall 11 is provided with a plurality of supporting walls 113 protruding toward the accommodating space 13 for supporting the terminal 20, and each supporting wall 113 includes two channels 115. The side wall 12 is provided with a guide bar 121 for guiding the second electrical connector 2 to be accurately inserted into the receiving space 13.

Each of the terminals 20 includes a holding portion 21 for holding on the bottom wall 11, a mounting portion 23 extending from the holding portion 21 downward out of the bottom wall 11 for mounting on the first circuit board 3, a cantilever 25 extending from the holding portion 21 upward into the receiving space 13, and a contact portion 251 located at a front portion of the cantilever 25. The cantilever 25 is provided with a slot 253, and the slot 253 extends to the contact portion 251. The periphery of the slot 253 is completely enclosed within the terminal 20. The cantilever arm 25 is received within the channel 115. By providing the slot 253 extending to the contact portion 251 on the terminal 20, the contact area of the terminal 20 is reduced, and the capacitance effect is reduced, so that the impedance matching of the whole transmission circuit is improved, and the shielding effect of the electrical connector 1 is improved. The mounting portion 23 includes a mounting leg 231 having a fish eye configuration. The terminal 20 is buckled again after the dull and stereotyped material punching press of metal and is formed, every the terminal 20 includes the broadside of the dull and stereotyped place face of metal and the narrow limit that forms from dull and stereotyped material unloading, be equipped with the barb 211 that protrudes to corresponding outside on the both sides narrow limit of holding portion 21, the broadside is equipped with from the convex wide barb 215 of broadside, wide barb 215 is torn and goes out from the broadside. Each of the terminals 20 is fitted in the fitting hole 111 of the bottom wall 11 and fixed to the bottom wall 11 by means of the barb 211 and the wide barb 215. Two adjacent ones of the terminals 20 form a terminal pair 22 for transmitting a pair of differential signals. The two terminals 20 forming the pair of terminals 22 are all narrow-sided coupled from the mounting portion 23 to the contact portion 251. The distance from the center of the contact portion 251 of one terminal 20 to the center of the contact portion 251 of the other terminal 20 in the terminal pair 22 is formed to be a first dimension S, and the distance from the center of the mounting portion 23 to the center of the mounting portion 23 of the other terminal 20 is formed to be a second dimension L, the first dimension S being smaller than the second dimension L to reduce signal crosstalk between the terminal pair 22 and the adjacent terminal pair 22.

The shielding plate 30 is formed by stamping a sheet metal material and then bending the sheet metal material. The shielding plate 30 includes a main wall 31 and a pair of side walls 33 extending from two sides of the main wall in the same direction, and the main wall 31 and the two side walls 33 surround one of the terminal pairs 22 in three directions to shield the terminal pair 22 from the other terminal pairs 22. The main wall 31 is parallel to the broad sides of the pair of terminals 22 that it shields, and a pair of the side walls 33 are opposite the respective narrow sides of the pair of terminals 22. The main wall 31 and the side wall 33 extend to form a plurality of contact spring pieces 331. In the present embodiment, the side of the shield plate 30 facing the terminal pair surrounded thereby is defined as the inside, and the side opposite to the inside is defined as the outside. Each of the side walls 33 includes one of the contact springs 331 and a first mounting portion 332 extending downward from each of the side walls 33 for mounting on the first circuit board 3. Each of the contact springs 331 in this position includes a contact protrusion 333, the contact springs 331 extend inward, and the contact protrusions 333 protrude inward, that is, the contact springs 331 in this position are inner contact springs protruding toward the terminal pairs 22. The shield plate 30 includes a body portion 310. The shield plate 30 is directly fixed to the bottom wall 11 by a body portion 310. The body portion 310 includes a pair of contact springs 335. Each of the contact domes 335 in this position includes a contact protrusion 337, the contact dome 335 extends outward, and the contact protrusion 337 protrudes outward, that is, the contact dome 335 in this position is an outer contact dome protruding away from the terminal pair 22. The terminal pairs 22 and the corresponding shield plates 30 may also be integrally formed and then fixed together to the insulative housing 10.

As shown in fig. 5 to 10, the second electrical connector 2 includes a housing 40, a plurality of terminal modules 50 mounted in the housing 40 and arranged in lateral, i.e., column, alignment, and a holder 49 for holding the terminal modules 50. Each of the terminal modules 50 includes an insulative housing 60, a plurality of signal terminals 70 held in the insulative housing 60, a plurality of ground terminals 80 held in the insulative housing 60, and a ground plate 90 on one side of the terminal module 50.

The insulative housing 60 is a sheet, and includes a lower edge 61 facing the mounting direction, an upper edge 62 opposite to the lower edge 61, a front edge 63 facing the mating electrical connector, and a rear edge 64 opposite to the front edge 63. The rear edge 64 is provided with a retaining rib 641. The holding member 49 includes holding holes 494 for receiving the corresponding holding ribs 641, so that each terminal module 50 is fixed integrally through the holding member 49 and the housing 40 in lateral alignment. The insulating body 60 has a first side surface 66 and a second side surface 67 opposite to each other in the thickness direction thereof, and a plurality of mounting grooves 662 are formed in the first side surface 66. The outer surface of the insulating body 60 is coated with a wave-absorbing material.

The signal terminals 70 are integrally formed in the housing 60, the signal terminals 70 are provided in signal terminal pairs 710, each signal terminal pair 710 is used for transmitting a pair of differential signals, each signal terminal 70 includes a mating end 73 extending out of the housing 60 in a mating direction, a mounting end 74 extending out of the housing 60 in a mounting direction and mountable on the second circuit board 4, and an intermediate portion 75 between the mounting end 74 and the mating end 73. The mating end 73 is perpendicular to the mounting end 74. Each of the signal terminals 70 includes a broadside and a narrow side, the broadsides of the signal terminal pairs 710 are disposed in the same plane, and the signal terminal pairs 710 are coupled from the mounting end 74 to the mating end 73 by the narrow sides. The insulating body 60 is provided with an air gap 721 exposing the signal terminal 70 in the air, the air gap 721 can be disposed on only one side of the insulating body 60 or on both sides of the insulating body 60, so as to expose the signal terminal 70 at the position of the air gap 721 to the air, and adjust the capacitance effect by the difference of the power saving constants of different materials, so as to improve the characteristic impedance thereof to meet 80-100 ohm, or implant a material with a dielectric constant different from that of the insulating body 60 at the position of the opening, or implant an electrical component to adjust the capacitance effect.

The ground terminal 80 includes a ground mating end 83 for mating with the first electrical connector 1, a ground mounting end 84 mounted on the second circuit board, and a transition 85 between the ground mounting end 84 and the ground mating end 83. The ground mating end 83 includes a pair of first ground contact portions 831 spaced apart in the up-down direction. Each of the ground terminals 80 is mounted in a corresponding one of the mounting grooves 662 of the insulative body 60. Ground terminals 80 are provided on both sides of each of the differential signal terminal pairs 710 in the vertical direction. The ground mating end 83 and the transition portion 85 are connected by a connector 851 for connecting the ground terminals 80 on both sides of the signal terminal pair 710. The ground terminal 80 includes a second ground contact portion 852 extending forward from the connector 851. The connecting member 851 and the two ground terminals 80 connected thereto are integrally stamped. Each of the ground terminals 80 includes a wide side and a narrow side. The broadsides of each of the ground terminals 80 are disposed in planes that are mutually perpendicular to the plane in which the broadsides of the differential signal terminal pairs 710 lie. The intermediate portion 75 of the signal terminal 70 is bent inward in the direction of the width of the ground terminal 80, so as to achieve the same length of the signal terminal pair 710 in physical structure, and further achieve the same length of electrical structure, thereby reducing the deviation of signal transmission to less than 0.20 picosecond (ps). In this embodiment, each terminal module 50 includes two signal terminal pairs 710, and each signal terminal pair 710 includes a pair of ground terminals 80 connected to each other by a connector 851. The interconnection of the ground terminals 80 to each other by the connector 851 reduces crosstalk between adjacent signal terminal pairs 710. The ground terminal 80 is in contact with the wave-absorbing material on the insulating body 60, so that the signal terminal pair 710 and the adjacent signal terminal pair 710 are shielded, and meanwhile, invalid electromagnetic waves in the signal transmission process are absorbed, and crosstalk and noise in the signal transmission process are improved.

When the first electrical connector 1 and the second electrical connector 2 are mated, the terminal pairs 22 are mated with the corresponding signal terminals 70 to form a signal path. The inner contact spring 331 of the shield 30 in one row of the electrical connector 1 is in contact connection with the shield in the corresponding terminal module 50, and the outer contact spring 335 in the row is in contact connection with the shield in the terminal module 50 adjacent to the corresponding terminal module. That is, the inner contact dome 331 is in contact with the first ground contact portion 831 of the ground terminal 80 in the corresponding terminal module 50, and the outer contact dome 335 is in contact with the second ground contact portion 852 of the adjacent terminal module 50.

The ground plate 90 is mounted on the first side 66 of the insulating body 60, the ground plate 90 and the connectors 851 are disposed on the same side of the insulating body 60, and the connectors 851 are located in front of the ground plate 90 in the mating direction. The insulating body 60 is provided with a clamping groove 665, and the grounding plate 90 is provided with a clamping piece 95 matched with the clamping groove 665. The grounding plate 90 is mechanically and electrically connected to the grounding terminal 80 by assembling or welding, and the distance between the grounding terminal 80 and the grounding plate 90 in the transverse direction is less than 0.2 mm, so as to reduce signal leakage, influence signal transmission between adjacent signal terminal pairs 710, and prevent EMI.

The plurality of terminal modules 50 include a first terminal module 51 and a second terminal module 52 cooperating with the first terminal module 51, and the first terminal module 51 and the second terminal module 52 are combined together through a positioning hole and a positioning post. Specifically, the inner contact spring 331 is in contact connection with the shield of the first terminal module 51, and the outer contact spring 335 is in contact connection with the shield of the second terminal module 52 of the adjacent terminal module 50. The signal terminal pairs 710 in the first terminal module 51 and the second terminal module 52 are arranged in a staggered manner at the mounting end 74 and the mating end 73 in the transverse direction, so as to improve the interference resistance of signal transmission.

The above mentioned embodiments are only embodiments of the present invention, not all or only embodiments, and any equivalent changes taken by the technical solutions of the present invention by those skilled in the art through reading the present invention are all covered by the claims of the present invention.

Claims

1. An electrical connector mateable with a mating connector, said electrical connector comprising an insulative housing, terminals held in the insulative housing, and shield blades held in the insulative housing, said terminals being arranged in pairs for transmitting a pair of differential signals, said shield blades comprising at least two walls and shielding said pairs of terminals in at least two directions, each of said walls having a plurality of contact springs extending therefrom, said electrical connector comprising: the contact elastic sheet comprises an inner contact elastic sheet protruding towards the terminal pair and an outer contact elastic sheet protruding towards the direction far away from the terminal pair.

2. The electrical connector of claim 1, wherein: the shielding piece comprises a main wall and a pair of side walls extending from two sides of the main wall to the same direction, and the main wall and the pair of side walls shield the terminal pair from three directions.

3. The electrical connector of claim 2, wherein: each side wall comprises a contact elastic sheet, and the main wall comprises a pair of contact elastic sheets arranged at intervals.

4. The electrical connector of claim 3, wherein: the contact springs on the side walls are inner contact springs.

5. The electrical connector of claim 3, wherein: the contact elastic sheets on the main wall are all external contact elastic sheets.

6. The electrical connector of claim 3, wherein: the two terminals forming the terminal pair are coupled by narrow sides, the main wall of the shielding plate is opposite to the wide sides of the terminal pair, and the pair of side walls of the shielding plate is respectively opposite to the corresponding narrow sides of the terminal pair.

7. The electrical connector of claim 6, wherein: the shielding sheet is directly installed and fixed on the insulating shell.

8. An electrical connector assembly comprising an electrical connector and a mating connector for mating with the electrical connector, the electrical connector comprising an insulative housing, a plurality of terminal pairs arranged in rows and columns and retained in the insulative housing, and a plurality of shielding plates retained in the insulative housing and arranged in corresponding rows and columns, each of the terminal pairs for transmitting a pair of differential signals, each of the shielding plates comprising at least two walls and shielding a corresponding one of the terminal pairs in at least two directions, each of the walls having a plurality of contact springs extending therefrom, the electrical connector comprising: the contact elastic sheet comprises an inner contact elastic sheet protruding towards the terminal pair and an outer contact elastic sheet protruding towards the direction far away from the terminal pair.

9. The electrical connector assembly of claim 8, wherein: the butting connector comprises a plurality of terminal modules which are arranged along the row direction, each terminal module comprises a shielding piece, the inner contact elastic piece of the shielding piece in one row of the electric connector is in contact connection with the shielding piece in the corresponding terminal module, and the outer contact elastic piece in the row is in contact connection with the shielding piece in the terminal module adjacent to the corresponding terminal module.

10. The electrical connector assembly of claim 9, wherein: the terminal module comprises a first terminal module and a second terminal module matched with the first terminal module, the inner contact elastic sheet is in contact connection with the shielding piece in the first terminal module, and the outer contact elastic sheet is in contact connection with the shielding piece of the second terminal module in the adjacent terminal module.