Electrical connector

Abstract

The application discloses an electric connector, which comprises a shell, a plurality of terminal groups held in the shell, each of the terminal groups comprising a signal terminal, a first shielding sheet shielding the signal terminal on at least one surface, and a second shielding sheet shielding the signal terminal on at least another surface, and the first shielding sheet and the second shielding sheet of each of the terminal groups are electrically connected, wherein the first shielding sheet of one of the terminal groups is electrically connected with the second shielding sheet of an adjacent terminal group.

Description

TECHNICAL FIELD

[0001] The present application relates to an electrical connector, in particular to an electrical connector with a grounding shield. BACKGROUND

[0002] Please refer to the China invention patent CN104718666B announced on August 21, 2013, which discloses an electrical connector, which comprises a housing, a plurality of terminal groups held in the housing, each of the terminal groups comprising a signal terminal, a shield of the signal terminal, but the shield is not electrically connected together, and the signal transmission is prone to crosstalk problems. SUMMARY

[0003] The main purpose of the present application is to provide an electrical connector, which is simple in process and good in shielding effect.

[0004] To achieve the above purpose, the present application adopts the following technical scheme: an electrical connector, which comprises a housing, a plurality of terminal groups held in the housing, each of the terminal groups comprising a signal terminal, a first shield of the signal terminal and a second shield of the signal terminal, the first shield shielding the signal terminal on at least one surface, the second shield shielding the signal terminal on at least another surface, the first shield and the second shield of each of the terminal groups being electrically connected, and the first shield of one of the terminal groups being electrically connected with the second shield of an adjacent terminal group.

[0005] Compared with the prior art, the present application has the advantages that: the electrical connector of the present application is electrically connected between the first shield and the second shield, and the first shield and the second shield of the adjacent terminal group are electrically connected, forming a large grounding loop, thereby effectively reducing the crosstalk problem in the loop. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 is a perspective view of the electrical connector of the present application.

[0007] Figure 2 is Figure 1 is another perspective view of the electrical connector shown in the figure.

[0008] Figure 3 is Figure 1 is a partial exploded view of the electrical connector shown in the figure.

[0009] Figure 4 is Figure 3 is another partial exploded view of the electrical connector shown in the figure.

[0010] Figure 5 is Figure 3A perspective view of the terminal module of the electrical connector shown.

[0011] Figure 6 is Figure 5 Another perspective view of the terminal module of the electrical connector shown, in another direction.

[0012] Figure 7 is Figure 5 A partially exploded view of the terminal module shown.

[0013] Figure 8 is Figure 7 A further exploded view of the terminal module shown.

[0014] Figure 9 is Figure 8 Another exploded view of the terminal module shown, in another direction.

[0015] Figure 10 Figure 1 A sectional view of the electrical connector shown, in the A-A direction.

[0016] Figure 11 Figure 1 A sectional view of the electrical connector shown, in the B-B direction.

[0017] Figure 12 Figure 1 A sectional view of the electrical connector shown, in the C-C direction.

[0018] [Explanation of main component symbols]

[0019] Electrical connector 100 Insulating housing 1

[0020] Terminal module 2 Signal terminal 21

[0021] First shielding sheet 30 Second shielding sheet 50

[0022] Bottom wall 11 Side wall 12

[0023] Accommodation space 13 Groove 120

[0024] Through slot 110 Pair of differential signal terminals 22

[0025] Contact portion 25 Mounting portion 26

[0026] Main body portion 27 Contact leg 261

[0027] Main wall 31 Side wall 32

[0028] Main wall 51 Side wall 52

[0029] Extension arm 521 Fixing member 60

[0030] Mounting groove 615 Holding portion 61

[0031] Extension 63 Mounting block 611

[0032] Bump 613 First side 201

[0033] Second side 202 terminal group 20

[0034] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. [Specific implementation method]

[0035] Please refer to Figures 1 to 12 As shown, the electrical connector 100 of the present invention is used to be mounted on a circuit board (not shown) and can be mated with a mating connector (not shown). The electrical connector 100 includes an insulating housing 1 and a plurality of terminal modules 2 arranged in a column and retained on the insulating housing 1. Each of the terminal modules 2 includes a plurality of terminal groups 20 arranged in a row. Each of the terminal groups 20 includes a signal terminal 21, a first shielding sheet 30 for shielding the signal terminal 21, and a second shielding sheet 50 that cooperates with the first shielding sheet 30 to shield the signal terminal 21. For ease of understanding, in this embodiment, the side of the electrical connector 100 mounted on the circuit board is defined as the mounting side or lower side 3, and the side opposite to the mounting side is defined as the mating side or upper side 4.

[0036] The insulating housing 1 includes a bottom wall 11 and a pair of parallel, spaced-apart side walls 12 extending upward from the bottom wall 11. The bottom wall 11 and the pair of side walls 12 form a receiving space 13. Grooves 120 are provided on each side wall 12 of the insulating housing 1 to guide the terminal module 2 in engagement with the insulating housing 1. The bottom wall 11 is provided with a plurality of through slots 110 extending therethrough.

[0037] Each terminal assembly 20 includes two signal terminals 21, arranged in a differential signal terminal pair 22 for transmitting a pair of differential signals. The signal terminals 21 include a contact portion 25 that extends into the receiving space 13 to mate with the mating connector, a mounting portion 26 for mounting on a circuit board, and a main body 27 connecting the contact portion 25 and the mounting portion 26. The mounting portion 26 is provided with a fisheye contact pin 261, which extends beyond the bottom wall 11 of the first insulating housing 1 to electrically connect to the circuit board.

[0038] The first shielding sheet 30 comprises a main wall 31 and a pair of side walls 32 extending from both ends of the main wall 31 along the same side, respectively. The main wall 31 and the pair of side walls 32 together enclose a U-shaped shielding space. The first shielding sheet 30 comprises mounting legs 321 for mounting on a circuit board. The mounting legs 321 comprise two, respectively extending from two corresponding side walls 32. The second shielding sheet 50 comprises a main wall 51 and a pair of side walls 52 extending from both ends of the main wall 51 along the same side. The main wall 51 and the pair of side walls 52 together enclose a U-shaped shielding space. The first shielding sheet 30 of the same terminal group 20 is matched with one side of the U-shaped opening of the second shielding sheet 50 along one side of the U-shaped opening, so as to form a complete circumferential shielding of one pair of differential signal terminals 22. The inner sides of the two side walls 32 of the first shielding sheet 30 are in contact with and electrically connected to the outer sides of the two side walls 52 of the second shielding sheet 50. The second shielding sheet 50 of each terminal group 20 is provided with an extension arm 521 on the side wall 52. The extension arm 521 extends from the lower side of the side wall 52 and is in contact with and electrically connected to the outer side of the adjacent side wall 52 of the first shielding sheet 30 of the adjacent terminal group 20. The extension arm 521 can be integrally punched and then bent from the second shielding sheet 50. Of course, the extension arm 521 can also be separately welded on the second shielding sheet 50 rather than being integrally punched.

[0039] The terminal module 2 further comprises a fixing member 60, all the differential signal terminal pairs 22 in the same terminal module 2 are arranged in sequence in the lateral direction, each first shielding sheet 30 is also arranged in sequence in the lateral direction and shields the corresponding differential signal terminal pair 22, and all the differential signal terminal pairs 22 and all the first shielding sheets 30 are integrally formed on the fixing member 60. The terminal module 2 comprises a first side 201 and a second side 202 in the column direction. Each fixing member 60 comprises a holding portion 61 mounted on the insulating housing 1 and a plurality of extension portions 63 extending into the accommodation space 13 from the upper side of the holding portion 61, the two sides of the holding portion in the lateral direction are respectively provided with outwardly extending mounting blocks 611, the mounting blocks 611 are mounted in the through slot 110 on the bottom wall of the insulating housing 1 along the groove 120, and each mounting block 611 is provided with an outwardly protruding positioning protrusion 613, which is used to limit the installation of the fixing member 60 on the insulating housing 1. Each extension portion 63 holds the differential signal terminal pair 22. The main body portion of each signal terminal 21 is completely formed and covered in the holding portion 61 of the fixing member 60, one wide edge and two narrow edges of the contact portion 25 are formed and covered in the extension portion 63 of the fixing member 60, and the other wide edge is exposed from the first side 201. Part of the main wall 31 of each first shielding sheet 30 is completely formed and covered in the fixing member 60, and part of the main wall 31 extends out of the fixing member 60 from the upper side of the fixing member 60. The fixing member 60 on both sides of each differential signal terminal pair 22 is provided with a mounting groove 615, the outer sides of the two side walls 32 of the first shielding sheet 30 are formed in the fixing member 60, and the inner sides are exposed from the corresponding mounting groove 615. The two side walls 52 of the second shielding sheet 50 are respectively accommodated in the corresponding mounting groove 615, and the outer sides of the two side walls 52 of the second shielding sheet 50 are in contact with the inner sides of the corresponding side walls 52 of the first shielding sheet 30 and are electrically connected. In this embodiment, each terminal module 2 comprises four differential signal terminal pairs 22 and shielding four differential signal terminal pairs 22 four first shielding sheets 30 and four second shielding sheets 50, the fixing member 60 fixes the four differential signal terminal pairs 22 and the corresponding four first shielding sheets 30 into one whole, and is assembled on the insulating housing 1, and the second shielding sheet 50 is assembled and fixed in the fixing member 60 from the lower side to the upper side.

[0040] The first shielding sheet 30 and the second shielding sheet 50 of each terminal group 20 of each terminal module 2 in the electric connector 100 completely surround a pair of the signal terminals 21 in the circumferential direction, and the second shielding sheet 50 is provided with an extension arm 521 connected with the first shielding sheet 30 of the adjacent terminal group 20, sequentially connecting other first shielding sheets 30 and second shielding sheets 50 in the circuit to form a larger circuit, thereby solving the crosstalk problem in the circuit, and when assembling the electric connector 100, all the signal terminals 21 and the first shielding sheets 30 in the same row are fixed into one whole body through a molding process, then assembled and fixed in the bottom wall 11 of the insulating shell 1, and then the second shielding sheet 50 is assembled. The number of molds and components is small, the assembly is simple, and the cost is low.

[0041] The above description is only one embodiment of the present application, not all or only one embodiment, any equivalent changes made by those skilled in the art through reading the present application are covered by the claims of the present application.

Claims

1. An electrical connector comprising a housing, a plurality of terminal sets held in the housing, each of the terminal sets comprising a signal terminal, a first shield of a shielded signal terminal, and a second shield of the shielded signal terminal, the first shield shielding the signal terminal on at least one side, the second shield shielding the signal terminal on at least one other side, characterized in that: The first shielding sheet and the second shielding sheet of each terminal group are electrically connected, wherein the first shielding sheet of one terminal group is electrically connected with the second shielding sheet of the adjacent terminal group, the first shielding sheet and the second shielding sheet are designed in a split type, the first shielding sheet comprises three walls, and the three walls form a U-shaped shielding space.

2. The electrical connector of claim 1, wherein: The first shielding sheet and the second shielding sheet both comprise a main wall and a pair of side walls extending from both sides of the main wall.

3. The electrical connector of claim 2, wherein: The inner sides of the two side walls of the first shielding sheet of each terminal group are electrically connected with the outer sides of the two side walls of the second shielding sheet.

4. The electrical connector of claim 3, wherein: The second shielding sheet comprises at least one extension arm, and the extension arm is electrically connected with the first shielding sheet of the adjacent terminal group.

5. The electrical connector of claim 4, wherein: The extension arm is integrally punched with the second shielding sheet and then is bent to form.

6. The electrical connector of claim 5, wherein: The extension arm is arranged on the side wall of the second shielding sheet, and the extension arm is in contact with the outer side of the side wall of the adjacent side of the first shielding sheet of the adjacent terminal group.

7. The electrical connector of claim 2, wherein: The fixing member is further provided, and the plurality of terminal groups are arranged in a row, and all the signal terminals and all the first shielding sheets in the same row are integrally formed on the fixing member.

8. The electrical connector of claim 7, wherein: Each terminal group comprises two signal terminals to form a pair of differential signal terminals for transmitting a pair of differential signals, and the fixing member on both sides of each differential signal terminal pair is provided with a mounting groove, and the two side walls of the second shielding sheet are respectively accommodated in the corresponding mounting groove.

9. The electrical connector of claim 8, wherein: At least one extension arm is arranged on each second shielding sheet, the extension arm is in contact with the side wall adjacent to the first shielding sheet of the adjacent terminal group, and the first shielding sheet and the second shielding sheet of the adjacent terminal group in the same row are sequentially connected.

Images