Electric connector

Abstract

An electric connector comprises an insulation body, at least one row of terminals and a grounding piece, the insulation body comprises a lengthwise slot and side walls located on the two sides of the slot, and the row of terminals are arranged on one side wall and comprise a plurality of signal terminal pairs and a plurality of grounding terminals; a row of terminals are fixed on an insulator, each terminal comprises a fixed part fixed on the insulator, an elastic arm extending out of the insulator and a pin part, the tail end of the elastic part is provided with an arc-shaped protruding contact part, and the contact part convexly extends into the slot; the grounding piece is fixed on the insulator and comprises a plurality of grounding parts and a plurality of shielding parts, the grounding parts abut against the corresponding grounding terminals, and the shielding parts are located on the outer sides of the corresponding signal terminal pairs. According to the electric connector provided by the invention, the grounding terminals can be grounded through the grounding part, and the signal terminals can be subjected to signal shielding through the shielding part, so that signal crosstalk is effectively improved, and the high-frequency transmission performance is improved.

Description

[Technical field]

[0001] The invention relates to an electric connector. [Background technology]

[0002] For related prior art, please refer to an electrical connector disclosed in patent No. CN207572652U, which includes an insulating body, two rows of terminals arranged on the insulating body, and a grounding piece located between the two rows of terminals. The grounding piece extends grounding pins to the grounding terminals on both sides respectively, and is electrically connected to the grounding terminals through the grounding pins to reduce signal crosstalk and improve the high-frequency performance of the connector.

[0003] The transmission rates of electrical connectors currently under development are getting higher and higher. The transmission bandwidth of some connectors has even reached 128Gbps. In such a rapidly developing field of high-frequency connectors, the grounding plate in the prior art can no longer meet its high-frequency performance.

[0004] Therefore, it is necessary to provide an improved electrical connector to solve the above problems. [Summary of the invention]

[0005] The main purpose of the present invention is to provide an electrical connector with good high frequency performance.

[0006] In order to solve the above technical problems, the present invention can adopt the following technical solutions: an electrical connector, including an insulating body, at least one row of terminals and a grounding member, the insulating body including a longitudinal slot and side walls located on both sides of the slot, a row of the terminals is arranged on one of the side walls and includes a plurality of signal terminal pairs and a plurality of grounding terminals; a row of the terminals is fixed to an insulator, the terminals include a fixing portion fixed to the insulator, an elastic arm extending out of the insulator and a pin portion, the end of the elastic portion has an arc-shaped protruding contact portion, and the contact portion protrudes into the slot; the grounding member is fixed to the insulator and includes a plurality of grounding portions and a plurality of shielding portions, the grounding portion abuts against the corresponding grounding terminal, and the shielding portion is located on the outside of the corresponding signal terminal pair.

[0007] Preferably, adjacent shielding portions are integrally connected by a bridge portion, the grounding member comprises an additional portion bent outward from the bridge portion, the grounding portion is bent inward from the bridge portion, and the grounding portion and the additional portion are parallel to the bridge portion.

[0008] Preferably, the grounding portion is bent upward from the lower edge of the bridge portion, and the additional portion is bent downward from the upper edge of the bridge portion.

[0009] Preferably, the shielding portion extends upward until it is flush with or exceeds the root of the contact portion.

[0010] Preferably, the side wall of the insulating body is provided with terminal grooves, and the terminals are accommodated one by one in the corresponding terminal grooves; the side wall is further provided with a plurality of first openings and a plurality of second openings extending outward at the corresponding terminal grooves, the signal terminal pair is exposed in the corresponding first openings, and the ground terminal is exposed in the second openings.

[0011] Preferably, the shielding portion extends to be exposed in the first opening.

[0012] Preferably, the shielding portion is provided with a vertical groove penetrating inside and outside, the outer side surface of the insulator is provided with a concave-convex portion matching the vertical groove, and the grounding piece is assembled from the outer side surface of the insulator to the concave-convex portion to fix the grounding piece to the insulator.

[0013] Preferably, the additional portion is flush with the outer side surface of the insulator.

[0014] Preferably, the insulator is provided with a plurality of first notches and a plurality of second notches which penetrate inside and outside, and the fixed portion of the signal terminal pair is partially exposed in the corresponding first notches; the fixed portion of the grounding terminal is partially exposed in the corresponding second notches, and the additional portion, the bridge portion and the grounding portion are accommodated in the second notches.

[0015] Preferably, the electrical connector comprises a metal shell covering the outer side of the insulating body, and the metal shell and the side wall are spaced apart to form a plug-in cavity.

[0016] Compared with the prior art, the electrical connector of the present invention can not only ground its grounding terminal through the grounding portion, but also shield the signal terminal pair through the shielding portion, thereby effectively improving signal crosstalk and improving high-frequency transmission performance.

Brief Description of the Drawings

[0017] Figure 1 It is a three-dimensional diagram of the electrical connector of the present invention.

[0018] Figure 2 for Figure 1 Cross-sectional view of the CEC connector along line AA.

[0019] Figure 3 for Figure 1 Cross-sectional view of the CEC connector along line BB.

[0020] Figure 4 for Figure 1 Exploded view of the CEC connector.

[0021] Figure 5 for Figure 4 A perspective view of the Chinese electric connector further disassembled, with the metal shell removed.

[0022] Figure 6 for Figure 5 A three-dimensional image of the CEC connector from another perspective.

[0023] Figure 7 for Figure 6 A three-dimensional image of one of the terminal modules.

[0024] Figure 8 for Figure 7 A three-dimensional image of a terminal module further disassembled.

[0025] Fig. 9 for Figure 8 A three-dimensional image of the further disassembled middle terminal module.

[0026] Fig.10 for Figure 1 A partial front view of the CEC connector after removing the metal shell.

[0027] Fig.11 It is a partial front view of a row of terminals provided with grounding members.

[0028] Fig.12 for Fig.11 A stereogram from one angle.

[0029] Fig.13 It is a partial perspective view of an insulator provided with terminals.

[0030]

Component Symbol Description

[0031] Electrical connector 100 Grounding member 30

[0032] Insulation body 10 Grounding portion 31

[0033] Slot 11 Shielding portion 32

[0034] Side wall 12 vertical groove 321

[0035] First opening 121 Bridge portion 33

[0036] Second opening 122 Additional portion 34

[0037] Terminal slot 13 Insulator 40

[0038] Terminal 20 Concavoconvex portion 401

[0039] Signal terminal pair 20S bump 402

[0040] Ground terminal 20G First slot 41

[0041] Fixing portion 21 Second notch 42

[0042] Elastic arm 22 Metal housing 50

[0043] Contact portion 221 Side plate 51

[0044] Elastic portion 222 Holding hole 511

[0045] Pin portion 23 Insertion cavity 60

[0046] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. [Specific implementation method]

[0047] See also Figure 1 As shown, it is an electrical connector 100 disclosed by the present invention, or called a board-end connector, which is installed on a circuit board (not shown in the figure) and is used to mate with a plug connector (not shown in the figure). In a specific product, the electrical connector of this embodiment includes a plurality of slots 11, including two signal slots and a mixed signal and power slot. Two terminal modules are arranged in each slot 11, thereby forming an expandable electrical connector, such as reducing the number of slots or increasing the number of slots. One of the slots and terminal modules is selected below for detailed description.

[0048] Ginseng Figure 1 and Figure 8-9 As shown, the electrical connector 100 includes an insulating body 10, at least one row of terminals 20 and a grounding member 30. The insulating body 10 includes a longitudinal slot 11 and side walls 12 located on both sides of the slot 11. A row of terminals 20 is fixed to an insulating body 40 and disposed on a side wall 12. Each row of terminals 20 includes a plurality of signal terminal pairs 20S and a plurality of grounding terminals 20G. Figure 2-3 The terminal 20 includes a fixed portion 21 fixed to the insulator 40, an elastic arm 22 extending from the insulator 40, and a pin portion 23. The end of the elastic arm 22 has an arc-shaped protruding contact portion 221, and the contact portion 221 protrudes into the slot 11. The grounding member 30 is fixed to the insulator 40 and includes a plurality of grounding portions 31 and a plurality of shielding portions 32. The grounding portion 31 abuts against the corresponding grounding terminal 20G, and the shielding portion 32 is located outside the corresponding signal terminal pair 20S. Adjacent shielding portions 32 are integrally connected by a bridge portion 33. The grounding member 30 includes an additional portion 34 bent outward from the bridge portion 33. The grounding portion 31 is bent inward from the bridge portion 33. The grounding portion 31 and the additional portion 34 are parallel to the bridge portion 33. Preferably, in this embodiment, the grounding portion 31 is bent upward from the lower edge of the bridge portion 33, and the additional portion 34 is bent downward from the upper edge of the bridge portion 33. Of course, it can be understood that the grounding portion 31 can also be configured to be bent downward from the upper edge of the bridge portion 33, and the additional portion 34 can be bent upward from the lower edge of the bridge portion 33.

[0049] Continue to see Figure 1-4The electrical connector 100 includes a metal shell 50 disposed on the outside of the insulating body 10. The metal shell 50 includes two side plates 51 respectively opposite to the two side walls 12. The side plates 51 are spaced apart from the opposite side walls 12 to form a plug-in cavity 60 for the docking connector to be plugged in. At least two latching holes 511 are disposed on the side plates 51. The height of the latching holes 511 in the up-down direction is substantially the same as the height of the first and second openings 121 and 122. The first and second openings 121 and 122 are disposed adjacent to the contact portion 221 of the terminal 20, which can increase the impedance of the contact portion 221 and enhance the resilience of the contact portion 221, so that the adaptability of the electrical connector 100 when mating with the docking connector is better. In addition, in the present invention, by disposing a pair of signal terminals 20S in the same opening, the pair of signal terminals are exposed to a common environment, so that the impedance matching of the terminals is better, and the transmission performance of the differential signal terminals can be effectively improved.

[0050] See also Figure 7 and Figure 11-12 As shown, in this embodiment, the insulator 40 is in a strip shape, and the insulator 40 and a row of terminals 20 fixed thereon form a terminal module, and the two oppositely arranged terminal modules are buckled together by a snap-on structure located on the insulator 40. The elastic arm 22 includes an elastic portion 222 connected between the contact portion 221 and the fixed portion 21, and the lateral width d1 of the elastic portion 222 is greater than the lateral width d2 of the contact portion 221. The shielding portion 32 extends upward to exceed the root of the contact portion 221 or is substantially aligned with the root of the contact portion 221, that is, it extends upward to exceed the intersection of the contact portion 221 and the elastic portion 222 or is substantially aligned with the intersection of the contact portion 221 and the elastic portion 222. Further combined Figure 2-3 as well as Fig.10 The side wall 12 of the insulating body 10 is provided with a terminal groove 13, and the terminals 20 are received in the corresponding terminal grooves 13 one by one. The side wall 12 is further provided with a plurality of first openings 121 and a plurality of second openings 122 extending outward at the corresponding terminal grooves 13. The signal terminal pair 20S is exposed in the corresponding first opening 121, and the ground terminal 20G is exposed in the second opening 122. The upper side edges of the first and second openings 121 and 122 are located above the contact portion 221, and the lower side edges of the first and second openings 121 and 122 are located below the contact portion 221, so that the contact portion and the local elastic portion are exposed in the first and second openings 121 and 122.

[0051] See also Figure 12-13The shielding portion 32 is provided with a vertical groove 321 that penetrates inside and outside, and the outer side of the insulator 40 is provided with a concave-convex portion 401 that matches the vertical groove 321. The concave-convex portion is formed by opening a groove on the outer side of the insulator 40. The grounding member 40 is assembled to the concave-convex portion 401 from the outside, so that the protrusion 402 of the concave-convex portion 401 can extend from the slot hole of the vertical groove 321, and the grounding member 30 is fixed to the insulator 40. The insulator 40 is provided with a plurality of first notches 41 and a plurality of second notches 42 that penetrate inside and outside. The fixing portion 21 of the signal terminal pair 20S is partially exposed in the corresponding first notches 41; the fixing portion 21 of the grounding terminal 20G is partially exposed in the corresponding second notches 42. The additional portion 34, the bridge portion 33 and the grounding portion 31 are accommodated in the second notches 42, and the additional portion 34 is flush with the outer side of the insulator 40. It should be particularly noted that, in this embodiment, the terminal module on the other side of the slot 11 is also provided with a grounding member 30 , that is, the terminal modules on both sides of the slot 11 are respectively provided with a grounding member 30 .

[0052] In other embodiments, the grounding member 30 provided with a bridge portion 33, an accessory portion 34 and a grounding portion 31 may also be located between two terminal modules, and connected to the grounding terminal 20G of one side of the terminal module through the grounding portion 31, and the accessory portion 34 is electrically connected to the grounding terminal 20G in the other side of the terminal module, so as to realize electrical connection of the grounding terminals 20G on both sides of the slot 11.

[0053] The above are only preferred embodiments of the present invention, and should not be used to limit the scope of the present invention. That is, all simple equivalent changes and modifications made according to the claims and the contents of the present invention should still fall within the scope of the present invention.

Claims

1. An electrical connector, comprising an insulating body, at least one row of terminals and a grounding member, wherein the insulating body comprises a longitudinal slot and side walls located on both sides of the slot, a row of the terminals is arranged on one of the side walls and comprises a plurality of signal terminal pairs and a plurality of grounding terminals; a row of the terminals is fixed to an insulating body, the terminals comprise a fixing portion fixed to the insulating body, an elastic arm extending out of the insulating body and a pin portion, the end of the elastic portion has an arc-shaped protruding contact portion, the contact portion protrudes into the slot; characterized in that: The grounding member is fixed to the insulator and comprises a plurality of grounding portions and a plurality of shielding portions. The grounding portions are in contact with corresponding grounding terminals, and the shielding portions are located outside the corresponding signal terminal pairs.

2. The electrical connector according to claim 1, wherein: Adjacent shielding parts are integrally connected by a bridge part, the grounding member comprises an additional part bent outward from the bridge part, the grounding part is bent inward from the bridge part, and the grounding part and the additional part are parallel to the bridge part.

3. The electrical connector according to claim 2, wherein: The grounding portion is bent upward from the lower edge of the bridge portion, and the additional portion is bent downward from the upper edge of the bridge portion.

4. The electrical connector according to claim 1, wherein: The shielding portion extends upward until it is flush with or exceeds the root of the contact portion.

5. The electrical connector according to claim 1, wherein: The side wall of the insulating body is provided with terminal grooves, and the terminals are accommodated one by one in the corresponding terminal grooves; the side wall is further provided with multiple first openings and multiple second openings penetrating outward at the corresponding terminal grooves, the signal terminal pair is exposed in the corresponding first opening, and the ground terminal is exposed in the second opening.

6. The electrical connector according to claim 5, wherein: The shielding portion extends to be exposed in the first opening.

7. The electrical connector according to claim 1, wherein: The shielding part is provided with a vertical groove penetrating inside and outside, the outer side surface of the insulator is provided with a concave-convex part matching with the vertical groove, and the grounding piece is assembled from the outer side surface of the insulator to the concave-convex part to fix the grounding piece to the insulator.

8. The electrical connector according to claim 7, wherein: The additional portion is flush with the outer side surface of the insulator.

9. The electrical connector according to claim 1, wherein: The insulator is provided with a plurality of first notches and a plurality of second notches which penetrate inside and outside, and the fixing parts of the signal terminal pair are partially exposed in the corresponding first notches; the fixing parts of the grounding terminals are partially exposed in the corresponding second notches, and the additional parts, the bridge parts and the grounding parts are accommodated in the second notches.

10. The electrical connector according to claim 1, wherein: The electrical connector comprises a metal shell covering the outer side of the insulating body, and the metal shell is spaced apart from the side wall to form a plug-in cavity.

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