CN210111110U

CN210111110U - Electrical connector

Info

Publication number: CN210111110U
Application number: CN201920814229.7U
Authority: CN
Inventors: 林三祐; 苏福; 陈茂山; 吴凯
Original assignee: Qinghong Electronics (suzhou) Co Ltd
Current assignee: Qinghong Electronics (suzhou) Co Ltd; Starconn Electronic Suzhou Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-02-21
Anticipated expiration: 2029-05-31

Abstract

An electrical connector is provided that includes an insulative body; and a plurality of ground terminals and a plurality of signal terminals. A plurality of ground terminals and a plurality of signal terminals are arranged in an array on the insulative body. In the array, a plurality of differential signal terminal pairs are arranged in a first row, and one ground terminal is arranged between adjacent differential signal terminal pairs in the first row. A plurality of differential signal terminal pairs are arranged in a second row adjacent to the first row, one ground terminal is arranged between the adjacent differential signal terminal pairs in the second row, and the ground terminals in the first row and the second row are not arranged in the same column. The electrical connector further comprises a plurality of first connecting sheets formed by metal materials, and the plurality of ground terminals are electrically connected with one ground terminal arranged in an adjacent row through one first connecting sheet respectively. The electrical connector can significantly reduce production cost and process complexity while enhancing the shielding effect on the signal terminals.

Description

Electrical connector

Technical Field

The present invention relates to an electrical connector, and more particularly, to an electrical connector for high frequency electronic signal transmission, which can enhance a shielding effect of a ground terminal while reducing complexity of a manufacturing process.

Background

In electronic or communication systems, circuits and electronic modules are usually arranged on several separate printed circuit boards, which are connected to each other via electrical connectors to transmit high-frequency electronic signals, so as to connect the backplane to the service daughter boards. As customer bandwidth demands continue to grow, more and more circuitry is placed in a given area of each printed circuit board and operates at higher and higher frequencies, and accordingly, electrical connectors between printed circuit boards carry data at higher and higher rates, with signal rates between backplanes and daughterboards reaching 6Gbps, and even 10Gbps or higher. The high speed, high density connection requirements place high demands on the electrical performance of the electrical connector, particularly on the crosstalk index values.

In order to prevent such crosstalk, some efforts have been made in the prior art. An electrical connector having ground and differential signal terminal pairs arranged along a plurality of rows and a plurality of columns with the respective terminals arranged in an array in the connector is provided, such as in patent application publication No. CN 205863449U. In the prior art, conductive adhesive is used to connect adjacent ground terminals, a plurality of rectangular blocks arranged in a straight line are disposed between two adjacent terminal rows, and a shield is formed between two differential signal terminal pairs adjacent to the rectangular blocks by the conductive adhesive. However, the conductive paste commonly used in the art for commonly grounding the ground terminals is expensive and complicated in manufacturing process.

Generally, conductive adhesive is formed by doping small powdered metal particles in an insulating plastic material, and fixing the relative positions of the metal particles by using the insulating plastic. In the conventional conductive paste, the content of metal particles is very small, so the conductive paste can only exhibit a slightly better conductivity than the insulating plastic, and the conductive paste height is not high for the overall height of the adjacent terminals, so the shielding effect is very limited. However, the conductive paste has a function of connecting adjacent ground terminals in series, so the real meaning of the conductive paste to Signal Integrity (SI) is to connect the ground terminals in series, i.e., common ground (common ground).

As described above, since the conductive paste itself has only weak conductivity, the effect of the conductive paste as a means for achieving common grounding of a plurality of ground terminals is not obvious, and it is only said that there is no common grounding measure. However, if it is desired to use a Metal material instead of the conductive paste, the Metal Injection Molding (MIM) process is complicated and has poor mass production effect, and even unexpected flash in the processing procedure causes short-circuit failure of the signal terminals of the terminals or leads to unexpected defects such as softening or melting of other insulating materials in the connector.

In view of the above, the present application proposes an electrical connector to overcome the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

The present disclosure is directed to an electrical connector, which can connect adjacent ground terminals by a plurality of connecting pieces separated from each other independently, so as to achieve a common ground of the ground terminals, thereby enhancing a shielding effect of the ground terminals and reducing complexity of a manufacturing process.

The present application provides an electrical connector, comprising: an insulating body; and a plurality of ground terminals and a plurality of signal terminals. A plurality of the ground terminals and a plurality of the signal terminals are arranged in an array on the insulating body. In the array, the array includes a plurality of staggered rows and columns, wherein one row is defined as a first row, a plurality of differential signal terminal pairs are arranged in the first row, one ground terminal is arranged between adjacent differential signal terminal pairs of the first row, and one ground terminal is arranged between adjacent differential signal terminal pairs of the same row. A plurality of differential signal terminal pairs are arranged in a second row adjacent to the first row, and one ground terminal is arranged between the adjacent differential signal terminal pairs in the second row, and the ground terminals in the first row and the second row are not arranged in the same column, that is, the ground terminals in the first row and the second row have a staggered relationship. The electrical connector further comprises a plurality of first connecting pieces formed by metal plate materials, each first connecting piece is provided with two opposite ends, and a plurality of grounding terminals are electrically connected with one grounding terminal arranged in an adjacent row through one first connecting piece.

Further, the first connecting piece includes: a main body portion; and first and second ground connection arms extending from the main body, wherein the first and second ground connection arms are located at opposite ends of the main body, respectively, for electrical connection to ground terminals of the electrical connector.

Further, the first connecting piece further comprises an engaging lug, and the first connecting piece is fixed to the insulating main body of the electric connector through the engaging lug.

Further, a hook portion is provided at one side of the engagement lug; the engagement lug is received in the insulative body and is interference fit with the insulative body via the hook.

Further, the first connecting piece further includes a process redundancy lug bent from the main body portion, the process redundancy lug extending in a direction opposite to an extending direction of at least one of the first ground connecting arm and the second ground connecting arm.

Further, one side surface of the first ground connecting arm and/or the second ground connecting arm has a convex portion that is in mechanical contact with the ground terminal.

Further, the first connecting piece electrically connects two different ground terminals through the first ground connecting arm and the second ground connecting arm.

Further, the first connecting piece includes: a sheet-like main body portion; and the first grounding connecting arm and the second grounding connecting arm are respectively and electrically connected with two adjacent rows of grounding terminals, the first grounding connecting arm and the second grounding connecting arm are respectively arranged on two opposite sides of the main body part and extend from the main body part in a bent manner, and the extending directions of the first grounding connecting arm and the second grounding connecting arm are the same.

Further, the electric connector also comprises a plurality of second connecting sheets which are in mirror symmetry with the first connecting sheets.

With the arrangement of the electrical connector in the present application, the one-piece conductive paste conventionally used in the art can be replaced with a general-purpose connecting piece made of a cheaper material, thereby reducing the complexity of the production process as a whole while enhancing the shielding effect of the ground terminal.

Drawings

The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a perspective view of a first connecting tab according to an embodiment of the present disclosure;

fig. 2 is a bottom view of a first connecting tab according to an embodiment of the present disclosure;

fig. 3A-3D are side views from various angles of a first connecting tab according to embodiments of the present disclosure;

fig. 4 is a bottom view of a second connecting tab according to an embodiment of the present disclosure;

fig. 5 is a perspective view of an electrical connector according to an embodiment of the present disclosure in a disassembled state;

fig. 6 is a perspective view of an assembled state of an electrical connector according to an embodiment of the present disclosure;

fig. 7 is a bottom view of the electrical connector shown in fig. 6;

fig. 8 is a partially cut-away perspective view of an electrical connector according to an embodiment of the present disclosure, taken along the dashed lines in fig. 7.

Detailed Description

The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings in the embodiments of the present application. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Referring first to fig. 5 to 7, an electrical connector 1 according to an embodiment of the present application generally includes an insulative body 11 and a plurality of ground terminals 13 and a plurality of signal terminals (including first and

second signal terminals

14a and 14 b). The insulating body 11 is mainly made of an insulating material, and the main function of the insulating body 11 is to maintain the respective conductors (i.e., terminals) in position relative to each other. A plurality of ground terminals and signal terminals are connected to the insulating body 11 in an array, i.e., a plurality of ground terminals 13 and signal terminals are arranged in the insulating body 11 in a plurality of rows and a plurality of columns, each row and each column being staggered with respect to each other. In the foregoing array-form arrangement of the plurality of ground terminals 13 and signal terminals, each two signal terminals adjacent in the row direction X of the array constitute a differential signal terminal pair 14, the differential signal terminal pairs 14 and the ground terminals 13 are alternately arranged in the row direction X to form terminal rows, and the first signal terminal 14a in the differential signal terminal pair 14 in one terminal row and one ground terminal 13 in an adjacent terminal row are arranged opposite to each other in the column direction Y perpendicular to the row direction X.

In the terminal array on the insulating main body 11, each row of terminals has a ground terminal 13 between two adjacent differential signal terminal pairs 14, but the arrangement of the terminals in two adjacent rows is not uniform. For example, assuming that one row is designated as a first row, and one row adjacent to the first row is designated as a second row, the ground terminals 13 in the first row and the ground terminals 13 in the second row are located in different columns, it can be understood that the ground terminals in the first row and the second row have a misaligned relationship.

As best shown in fig. 7, the electrical connector 1 further includes a plurality of first connection pieces 100 and a plurality of second connection pieces 100 ', and the ground terminals 13 in one terminal row are connected to the corresponding ground terminals 13 in the adjacent terminal row on the first side by the first connection pieces 100 and to the corresponding ground terminals 13 in the adjacent terminal row on the second side by the second connection pieces 100', so that the plurality of ground terminals 13 in the adjacent two columns are electrically connected to each other in the column direction Y.

In a production line application, the ground terminals 13 and the differential signal terminal pairs 14 are inserted from one side and connected to the insulating main body 11 along the plugging direction Z, while the plurality of first connection pieces 100 and the plurality of second connection pieces 100 'are selectively inserted from the other side along the plugging direction Z and connected to the insulating main body, and when the electrical connector 1 is in an assembled state, the plurality of first connection pieces 100 and the plurality of second connection pieces 100' are connected with the plurality of ground terminals 13 so as to connect, in particular electrically connect, some of the plurality of ground terminals 13.

Those skilled in the art can appreciate from the foregoing that the disclosed techniques can include at least the following two variations: in another application of the manufacturing line, each first connecting piece 100 and each second connecting piece 100' can be inserted into the insulating main body 11 along the same assembling direction of the ground terminal 13 and the differential signal terminal pair 14. Further still, each first connecting piece 100 and each second connecting piece 100 'may be molded to another insulating material, and then each first connecting piece 100 and each second connecting piece 100' are mounted to a desired location by the mutual location of the insulating material and the insulating main body 11.

In the present application, the first connection piece 100 and the second connection piece 100' are formed by cutting and bending a metal sheet material, as opposed to using a wave-absorbing material or an electrically lossy material (loss material) such as conductive adhesive in the prior art. Electrically lossy materials such as prior art conductive pastes are formed by adding a filler comprising conductive particles to a binder and mixing in an insulating material.

Referring to fig. 1 to 3D, the first connecting piece 100 includes a main body portion 1000 in a sheet shape, the main body portion 1000 having first and second side edges 1001 and 1001 'opposite to each other and third and fourth side edges 1002 and 1002' opposite to each other.

The first connection tab 100 further includes a first body extension 1100 and a second body extension 1100 ', the first body extension 1100 and the second body extension 1100 ' being coplanar with the body portion 1000, and a first end of the first body extension 1100 and a first end of the second body extension 1100 ' being connected to a portion of the first side edge 1001 and a portion of the second side edge 1001 ', respectively, and a second end of the first body extension 1100 and a second end of the second body extension 1100 ' extending away from each other.

The first connecting piece 100 further includes first and second

ground connecting arms

1200 and 1200 'for electrically connecting to the ground terminal 13 of the electrical connector 1, the first and second

ground connecting arms

1200 and 1200' extend from the second ends of the first and second body extensions 1100 and 1100 ', respectively, in a direction perpendicular to the plane of the body portion on which the body portion 1000 is located, and the extending directions of the first and second

ground connecting arms

1200 and 1200' are the same.

The first connecting tab 100 may be an integral stamping, that is, the main body portion 1000, the first and second body extensions 1100, 1100 ', and the first and second

ground connecting arms

1200, 1200' (and possibly, an engaging lug 1300 and a process redundancy lug 1400 as will be described below) may be integrally stamped and formed.

The first connecting piece 100 may further include an engaging lug 1300, the engaging lug 1300 being used for connecting the first connecting piece 100 with the insulating main body 11 of the electrical connector 1, the engaging lug 1300 extending from a portion of one of the third side edge 1002 and the fourth side edge 1002 'in a direction perpendicular to the plane of the main body, an extending direction of the engaging lug 300 being the same as an extending direction of the first ground connecting arm 1200 and the second ground connecting arm 1200'. A hook 1301 may be provided at one side of the engagement lug 1300; the engagement lugs 1300 are received in corresponding receiving slots 110 in the insulating body 11 and are in an interference fit (such as a hard interference) with the sidewalls of the receiving slots 110 via the hooks 1301 to facilitate connection of the two, as shown in detail in fig. 8.

The first connection tab 100 may further comprise a process redundancy lug 1400, the process redundancy lug 1400 extending from a portion of the other of the third side edge 1002 and the fourth side edge 1002 'in a direction perpendicular to the plane of the main body portion, the process redundancy lug 1400 extending in a direction opposite to the direction in which the first ground connection arm 1200 and the second ground connection arm 1200' extend. The process redundancy lug 1400 is used to interconnect with the punched material tape, so as to facilitate assembly during the manufacturing process, and after the first connecting piece 100 is inserted into the insulating body 11, the process redundancy lug 1400 is disconnected from the punched material tape.

The body portion 1000 may have a parallelogram shape in which a first side edge 1001 and a second side edge 1001 'are parallel to each other and a third side edge 1002 and a fourth side edge 1002' are parallel to each other, which facilitates diagonal connection of longitudinally adjacent and staggered ground terminals in two terminal columns. However, the shape of the body portion 1000 is not limited thereto.

A side surface of the first and/or second

ground coupling arms

1200, 1200' has at least one protrusion 1201, the protrusion 1201 being used to bring the side surface into mechanical contact with a corresponding ground terminal, for example, an interference fit (such as a hard interference).

Still referring to fig. 1-3D in conjunction with fig. 4, the second connecting piece 100' may be mirror-symmetrical to the first connecting piece 100.

According to a preferred arrangement, and with simultaneous combined reference to fig. 1-3D, 4 and 7, the projections 1201 of the first connection tab 100 are provided on the outer side of the second ground connection arm 1200' for interference fit with the flat side walls of the corresponding ground terminal, while the outer side of the first ground connection arm 1200 is flat for interference fit with the similarly projecting side walls with the corresponding ground terminal. Further, the convex portion 1201 of the second connecting piece 100 ' is provided on the outer side face of the first ground connecting arm 1200 to be interference-fitted with the flat side wall of the corresponding ground terminal, while the outer side face of the second ground connecting arm 1200 ' of the second connecting piece 100 ' is flat to be interference-fitted with the side wall with a similar convex portion with the corresponding ground terminal.

Each of the first connecting piece 100 and the second connecting piece 100 'electrically connects the two ground terminals 13 that are most adjacent in the column direction Y of the array in the adjacent two terminal rows through the respective first ground connecting arm 1200 and the second ground connecting arm 1200'.

According to another embodiment, not shown, the first connecting piece 100 comprises a main body 1000 in the shape of a sheet and a first ground connecting arm 1200 and a second ground connecting arm 1200 ', a ground connecting arm 1200 and a second ground connecting arm 1200' are respectively electrically connected to the ground terminals of two adjacent columns, the first ground connecting arm 1200 and the second ground connecting arm 1200 'are respectively arranged on two opposite sides of the main body and extend in a direction perpendicular to the plane of the main body, and the extending directions of the first ground connecting arm 1200 and the second ground connecting arm 1200' are the same.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electrical connector, the electrical connector (1) comprising:

an insulating body (11); and

a plurality of ground terminals (13) and a plurality of signal terminals, the plurality of ground terminals (13) and the plurality of signal terminals being arranged in an array on the insulating body (11); in the array, the array comprises a plurality of staggered rows and columns, a plurality of differential signal terminal pairs (14) are arranged in a first row, one ground terminal (13) is arranged between the adjacent differential signal terminal pairs (14) in the first row, a plurality of differential signal terminal pairs (14) are arranged in a second row adjacent to the first row, one ground terminal (13) is arranged between the adjacent differential signal terminal pairs (14) in the second row, the ground terminals of the first row and the second row are not arranged in the same column,

it is characterized in that the preparation method is characterized in that,

the electric connector (1) further comprises a plurality of first connecting sheets (100) formed by sheet metal materials, and a plurality of the grounding terminals (13) are electrically connected with one grounding terminal (13) arranged in an adjacent row through one first connecting sheet respectively.

2. The electrical connector of claim 1, wherein the first connecting tab (100) comprises:

a main body (1000); and

a first ground connection arm (1200) and a second ground connection arm (1200 ') extending from the main body portion (1000), wherein the first ground connection arm (1200) and the second ground connection arm (1200') are located at opposite ends of the main body portion (1000), respectively, for electrical connection to a ground terminal (13) of the electrical connector (1).

3. The electrical connector of claim 2,

the first connecting piece (100) further comprises an engaging lug (1300), and the first connecting piece (100) is fixed on the insulating main body (11) of the electric connector (1) through the engaging lug (1300).

4. The electrical connector of claim 3,

a hook (1301) is arranged at one side of the joint lug (1300); the engagement lug (1300) is received in the insulating body (11) and is interference fitted with the insulating body (11) via the hook (1301).

5. The electrical connector of claim 3,

the first connecting piece (100) further comprises a process redundancy lug (1400), wherein the process redundancy lug (1400) is bent from the main body part (1000), and the extending direction of the process redundancy lug (1400) is opposite to the extending direction of at least one of the first grounding connecting arm (1200) and the second grounding connecting arm (1200').

6. The electrical connector of claim 2,

one side surface of the first ground connecting arm (1200) and/or the second ground connecting arm (1200') has a convex portion (1201), and the convex portion (1201) is in mechanical contact with the ground terminal (13).

7. The electrical connector of claim 2,

the first connecting piece (100) electrically connects two different ground terminals (13) through the first ground connecting arm (1200) and the second ground connecting arm (1200').

8. The electrical connector of claim 1,

the first connecting piece (100) comprises:

a sheet-like main body (1000); and

the first grounding connecting arm (1200) and the second grounding connecting arm (1200 ') are respectively and electrically connected with the two adjacent rows of the grounding terminals (13), the first grounding connecting arm (1200) and the second grounding connecting arm (1200 ') are respectively arranged on two opposite sides of the main body part (1000) and extend from the main body part (1000) in a bending mode, and the extending directions of the first grounding connecting arm (1200) and the second grounding connecting arm (1200 ') are the same.

9. The electrical connector of claim 1,

the electrical connector further comprises a plurality of second connection pads (100') which are mirror images of the first connection pads (100).