Electric connector

Abstract

An electric connector comprises an insulating body and a row of first conductive terminals fixedly held on the insulating body, and each first conductive terminal comprises a main body part fixed on the insulating body, an elastic contact arm formed by extending from one end of the main body part and a pin part formed by extending from the other end of the main body part. The row of first conductive terminals comprises a plurality of first grounding terminals and a plurality of first signal terminal pairs which are arranged along a first direction, the first grounding terminals and the first signal terminal pairs are alternately arranged in the first direction, the size of the first grounding terminals is larger than that of the first signal terminal pairs in the thickness direction of the terminals, and the size of the first signal terminal pairs is smaller than that of the first signal terminal pairs in the thickness direction of the terminals. One side of the first conductive terminal in the terminal thickness direction is provided with a first connecting piece which is made of an electrical loss material and is used for electrically connecting the plurality of first grounding terminals, and the large-size first grounding terminals shield the first signal terminal pair in the first direction; the first connecting piece made of an electrical loss material is connected in series with the first grounding terminal so that the first signal terminal pair is surrounded and shielded, and the high-frequency performance of the electric connector is good.

Description

[Technical field]

[0001] The utility model relates to an electric connector, in particular to an electric connector with good high-frequency performance. [Background technology]

[0002] Chinese utility model patent No. CN209169425U discloses a high-frequency electrical connector, including two rows of conductive terminals and an insulating block holding the two rows of conductive terminals, each row of conductive terminals has a ground terminal and a signal terminal pair, and a metal piece improves the high-frequency performance of the electrical connector by connecting the ground terminals in the two rows of conductive terminals in series. However, as the transmission rate of the electrical connector becomes higher and higher, the industry's demand for the high-frequency performance of the electrical connector continues to increase, and using only a grounding piece to connect several grounding terminals to the same ground can no longer meet the demand.

[0003] Therefore, it is necessary to provide an improved electrical connector to solve the above problems. [Contents of the utility model]

[0004] The main purpose of the utility model is to provide an electrical connector, which has good high-frequency performance.

[0005] In order to solve the above technical problems, the utility model can adopt the following technical solutions: an electrical connector, comprising an insulating body and a row of first conductive terminals fixed on the insulating body, the first conductive terminal comprising a main body portion fixed to the insulating body, an elastic contact arm extending from one end of the main body portion and a pin portion extending from the other end of the main body portion, a row of the first conductive terminals comprising a plurality of first grounding terminals and a plurality of first signal terminal pairs arranged along a first direction, the first grounding terminals and the first signal terminal pairs are arranged alternately in the first direction, and in the terminal thickness direction, the size of the first grounding terminal is larger than the size of the first signal terminal pair, the electrical connector comprising a first connecting member made of an electrically lossy material and arranged on one side of the first conductive terminal in the terminal thickness direction, the first connecting member electrically connects the plurality of first grounding terminals to each other.

[0006] Furthermore, the insulating body includes a first insulating block injection molded on the first conductive terminal and an insulating frame having a docking groove for accommodating the first conductive block, the main body of the first conductive terminal is fixed on the first insulating block, and the elastic contact arm of the first conductive terminal extends out of the first insulating block and protrudes into the docking groove.

[0007] Further, viewed from the first direction, in the terminal thickness direction, the size of the elastic contact arm of the first ground terminal is greater than the size of the elastic contact arm of the first signal terminal pair.

[0008] Furthermore, in the direction of terminal thickness, the size of the main body of the first grounding terminal is larger than the size of the main body of the first signal terminal pair. When viewed from the first direction, the main body of the first signal terminal pair is completely covered by the main body of the first grounding terminal. In the direction of terminal thickness, the main body of the first grounding terminal exposes the side of the first insulating block. The first connecting member is affixed to the side of the first insulating block to electrically contact the main body of the first grounding terminal. The main body of the first signal terminal pair is surrounded by the first connecting member and the main bodies of the two first grounding terminals on both sides of the first signal terminal pair.

[0009] Furthermore, in the direction of terminal thickness, the size of the main body of the first grounding terminal is larger than the size of the main body of the first signal terminal pair. When viewed from the first direction, the main body of the first signal terminal pair is completely covered by the main body of the first grounding terminal. In the direction of terminal thickness, the main body of the first grounding terminal has a convex portion protruding from the first insulating block, and the first connecting member is injection molded on the convex portion to electrically connect a plurality of first grounding terminals to each other.

[0010] Furthermore, the protrusion includes a rectangular first protrusion formed by protruding from a main body of the first ground terminal and an inverted triangle second protrusion formed by protruding from the first protrusion.

[0011] Furthermore, the first connector is a rectangular block extending along the first direction and covering the main body of the first ground terminal and the first signal terminal pair on one side in the terminal thickness direction, and the first connector is spaced apart from the main body of the first signal terminal pair in the terminal thickness direction.

[0012] Further, the electrical connector includes a row of second conductive terminals located on opposite sides of the docking groove with the row of first conductive terminals, the second conductive terminals include a main body, an elastic contact arm and a pin portion, the insulating body includes a second insulating block injection molded with the main body of the second conductive terminal, the first insulating block and the second insulating block are assembled and loaded into the insulating frame, a row of second conductive terminals includes second grounding terminals and second signal terminal pairs alternately arranged along a first direction, in the terminal thickness direction, the size of the second grounding terminal is larger than the size of the second signal terminal pair, the electrical connector includes a second connecting piece made of an electrically lossy material and arranged on one side of the second conductive terminal in the terminal thickness direction, the second connecting piece electrically connects a plurality of second grounding terminals to each other.

[0013] Furthermore, a first connector electrically connected to a plurality of first grounding terminals is disposed on the inner side of a row of first conductive terminals in the terminal thickness direction, the first connector extends along the first direction and is separated from a plurality of first signal terminal pairs, and a second connector electrically connected to a plurality of second grounding terminals is disposed on the inner side of a row of second conductive terminals in the terminal thickness direction, the second connector extends along the first direction and is separated from a plurality of second signal terminal pairs.

[0014] Further, in the terminal thickness direction, the first insulating block and the second insulating block have opposite inner side surfaces, the first connecting member is abutted against the inner side surface of the first insulating block, and the second connecting member is abutted against the inner side surface of the second insulating block, and in the terminal thickness direction, the main body of the first signal terminal pair is buried in the inner side surface of the first insulating block, and the main body of the second signal terminal pair is buried in the inner side surface of the second insulating block, the main body of the first grounding terminal is exposed from the inner side surface of the first insulating block to electrically contact with the first connecting member, and the main body of the second grounding terminal is exposed from the inner side surface of the second insulating block to electrically contact with the second connecting member.

[0015] Compared with the prior art, in the electrical connector of the utility model, in the terminal thickness direction, the large-sized first grounding terminal can shield the first signal terminal pair in the first direction, and the first connecting member made of electrically lossy material and connected in series with the first grounding terminal can make the first signal terminal pair surrounded and shielded by the first connecting member and the first grounding terminal on multiple sides, thereby effectively improving the crosstalk resonance of the electrical connector and improving the high-frequency performance of the electrical connector.

Brief Description of the Drawings

[0016] Figure 1 It is a three-dimensional diagram of the electrical connector of the utility model.

[0017] Figure 2 for Figure 1 Another perspective of the stereogram.

[0018] Figure 3 It is a three-dimensional exploded view of the electric connector of the utility model.

[0019] Figure 4 yes Figure 3 Another perspective exploded view.

[0020] Figure 5 It is a three-dimensional exploded view of the utility model electric connector without the insulating frame.

[0021] Figure 6 yes Figure 5 Another perspective exploded view.

[0022] Figure 7 yes Figure 5 Further exploded view of .

[0023] Figure 8 yes Figure 6 Further exploded view of .

[0024] Fig. 9 is a side view schematic diagram of a first signal terminal pair and a first ground terminal.

[0025] Fig.10 yes Figure 1 Section view along line AA.

[0026] Fig.11 yes Figure 1 Section view along line BB. [Specific implementation method]

[0027] See also Figure 1-11 As shown, the electrical connector 100 of the utility model is a high-speed and high-frequency electrical connector for transmitting high-speed signals, which is installed on a circuit board (not shown). The electrical connector 100 is provided with a docking groove 101 for plugging in the card edge of a module or the card edge of a cable assembly. Of course, it can also be in other forms.

[0028] The electrical connector 100 includes an insulating body 1, a row of first conductive terminals 2 and a row of second conductive terminals 3 fixed on the insulating body 1, the front end of the insulating body 1 is recessed to form the docking groove 101, and the row of the first conductive terminals 2 and the row of the second conductive terminals 3 are respectively located on opposite sides of the docking groove 101. Specifically, the insulating body 1 includes a first insulating block 11, a second insulating block 12, and an insulating frame 13, the front end of the insulating frame 13 is recessed to form the docking groove 101 and the rear end is recessed to form the assembly groove 102, the row of the first conductive terminals 2 is injection molded on the first insulating block 11, and the row of the second conductive terminals 3 is injection molded on the second insulating block 12, the first insulating block 11 and the second insulating block 12 are matched and fixed to each other, and then assembled into the insulating frame 13 from the back to the front through the assembly groove 102.

[0029] The first conductive terminal 2 includes a main body 21 that is injection molded to be fixed to the first insulating block 11, an elastic contact arm 22 that extends forward from one end of the main body 21 out of the first insulating block 11 and protrudes into the docking groove 101, and a pin portion 33 that extends out of the first insulating block 11 from the other end of the main body 21. A row of the first conductive terminals 2 includes a plurality of first grounding terminals 201 and a plurality of first signal terminal pairs 202 arranged along a first direction perpendicular to the front-to-back direction, the first signal terminal pairs 202 are located between adjacent first grounding terminals 201, and the first grounding terminals 201 and the first signal terminal pairs 202 are alternately arranged in the first direction. In the thickness direction of the terminal, the size of the first ground terminal 201 is larger than that of the first signal terminal pair 202. Specifically, the size of the main body 21 of the first ground terminal 201 is larger than that of the main body 21 of the first signal terminal pair 202. When viewed from the first direction, the main body 21 of the first signal terminal pair 202 is completely covered by the main body 21 of the first ground terminal 201, thereby reducing signal crosstalk between adjacent first signal terminal pairs 202. In this embodiment, the terminal plate surface of the first ground terminal 201 and the terminal plate surface of the first signal terminal pair 202 are perpendicular to each other. The first ground terminal 201 is directly punched out of a metal plate, while the first signal terminal pair 202 is punched out of a metal plate and then further bent. The rigidity of the first ground terminal 201 is greater than that of the first signal terminal pair 202. In addition, the size of the elastic contact arm 22 of the first grounding terminal 201 in the terminal thickness direction is also greater than the size of the elastic contact arm 22 of the first signal terminal pair 202. When viewed from the first direction, the elastic contact arm 22 of the first signal terminal pair 202 is almost covered by the elastic contact arm 22 of the first grounding terminal 201, thereby further reducing signal crosstalk between adjacent first signal terminal pairs 202.

[0030] The electrical connector 100 further includes a first connector 4 made of an electrically lossy material for electrically connecting the plurality of first grounding terminals 201 to each other. The first connector 4 is a rectangular block extending along a first direction and covering the main bodies 21 of the plurality of first grounding terminals 201 and the plurality of first signal terminal pairs 202 on one side in the terminal thickness direction. In the terminal thickness direction, the main body 21 of the first grounding terminal 201 has a convex portion 211 protruding out of the first insulating block 11. The first connector 4 is injection molded on the convex portions 211 of the plurality of first grounding terminals 201 to electrically connect the first grounding terminals 201 to each other, and the first connector 4 is spaced apart from the main body 21 of the first signal terminal pair 202 in the terminal thickness direction. Specifically, the protrusion 211 includes a rectangular first protrusion 2111 protruding from the main body 21 of the first grounding terminal 201 to the first insulating block 11 and an inverted triangle-shaped second protrusion 2112 further protruding from the first protrusion 2111. Such a structure can prevent the first connector 4 from being separated from the protrusion 211 after injection molding. In the utility model, in the terminal thickness direction, the main body 21 of the first grounding terminal 201 exposes the side of the first insulating block 11. After injection molding, the first connector 4 will be attached to the side of the first insulating block 11 and electrically contact the main body 21 of the first grounding terminal 201. In this way, the main body 21 of the first signal terminal pair 202 is surrounded by the main bodies 21 of the first grounding terminal 201 and the two first grounding terminals 201 on both sides of the first signal terminal pair 202 on multiple sides, thereby effectively reducing signal crosstalk between adjacent first signal terminal pairs 202.

[0031] The second conductive terminal 3 includes a main body 31 that is injection molded to be fixed to the second insulating block 12, an elastic contact arm 32 that extends forward from one end of the main body 31 out of the second insulating block 12 and protrudes into the docking groove 101, and a pin 33 that extends from the other end of the main body 31 out of the second insulating block 12. A row of the second conductive terminals 3 is arranged in the same manner as a row of the first conductive terminals 2, including a plurality of second grounding terminals 301 and a plurality of second signal terminal pairs 302 that are alternately arranged along a first direction. In the terminal thickness direction, the size of the main body 21 of the second grounding terminal 301 is larger than that of the second signal terminal pair 302, and the size of the elastic contact arm 32 of the second grounding terminal 301 in the terminal thickness direction is larger than that of the elastic contact arm 32 of the second signal terminal pair 302. When viewed from the first direction, the main body 31 and the elastic contact arm 32 of the second signal terminal pair 302 are covered by the main body 31 and the elastic contact arm 32 of the second grounding terminal 301, thereby effectively reducing signal interference between adjacent second signal terminal pairs 302.

[0032] A second connector 5 made of an electrically lossy material is covered on one side of a row of second conductive terminals 3 in the terminal thickness direction. The main body 31 of the second grounding terminal 301 protrudes in the terminal thickness direction to form a convex portion 311 protruding from the second insulating block 12. The second connector 5 is injection molded on the convex portions 311 of a plurality of second grounding terminals 301 to electrically connect the second grounding terminals 301 to each other, and the second connector 5 is separated from the main body 31 of the second signal terminal pair 302 in the terminal thickness direction.

[0033] In the utility model, the first connecting member 4 electrically connected to the plurality of first grounding terminals 201 is arranged on the inner side of a row of the first conductive terminals 2 in the terminal thickness direction, the first connecting member 4 extends along the first direction and is separated from the plurality of first signal terminal pairs 202, and the second connecting member 5 electrically connected to the plurality of second grounding terminals 301 is arranged on the inner side of a row of the second conductive terminals 3 in the terminal thickness direction, the second connecting member 5 extends along the first direction and is separated from the plurality of second signal terminal pairs 302. In the terminal thickness direction, the inner side surface 111 of the first insulating block 11 is arranged opposite to the inner side surface 121 of the second insulating block 12, the first connecting member 4 is abutted against the inner side surface 111 of the first insulating block 11, and the second connecting member 5 is abutted against the inner side surface 121 of the second insulating block 12. In the terminal thickness direction, the main body 21 of the first signal terminal pair 202 is buried in the inner side surface 111 of the first insulating block 11, and the main body 31 of the second signal terminal pair 302 is buried in the inner side surface 121 of the second insulating block 12, the main body 31 of the first grounding terminal 201 exposes the inner side surface 111 of the first insulating block 11 to electrically contact with the first connecting member 4, and the main body 31 of the second grounding terminal 301 exposes the inner side surface 121 of the second insulating block 12 to electrically contact with the second connecting member 5. Since the first connector 4 for connecting a plurality of first grounding terminals 201 in series is arranged on the inner side of the terminal thickness direction of a row of the first conductive terminals 2, and the second connector 5 for connecting a plurality of second grounding terminals 301 in series is arranged on the inner side of the terminal thickness direction of a row of the second conductive terminals 3, the first connector 4 and the second connector 5 can shield the signal interference between the first conductive terminals 2 and the second conductive terminals 3. It should be noted that in other embodiments, the first connector 4 and the second connector 5 can also be arranged on the outer side of the terminal thickness direction of a row of the first conductive terminals 2 and the outer side of the terminal thickness direction of a row of the second conductive terminals 3, so that the signal interference of the external connector (not shown) on the electrical connector 100 can be effectively shielded. It should be noted that when the first connector 4 is arranged on the inner side of the terminal thickness direction of a row of the first conductive terminals, the first signal terminal pair 201 can be surrounded and shielded on three sides, and if the first connector 4 is also arranged on the outer side of the terminal thickness direction, the first signal terminal pair 201 can be surrounded and shielded on four sides, so that the anti-interference performance is better.

[0034] 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, any simple equivalent changes and modifications made according to the claims of the present invention and the contents of the present invention specification should still fall within the scope of the present invention patent.

Claims

1. An electrical connector, comprising an insulating body and a row of first conductive terminals fixed to the insulating body, wherein the first conductive terminals include a main body portion fixed to the insulating body, an elastic contact arm extending from one end of the main body portion, and a pin portion extending from the other end of the main body portion, wherein the row of first conductive terminals includes a plurality of first grounding terminals and a plurality of first signal terminal pairs arranged along a first direction, wherein the first grounding terminals and the first signal terminal pairs are arranged alternately in the first direction, and wherein: In the terminal thickness direction, the size of the first grounding terminal is larger than the size of the first signal terminal pair. The electrical connector includes a first connecting member made of an electrically lossy material and arranged on one side of the terminal thickness direction of the first conductive terminal. The first connecting member electrically connects a plurality of first grounding terminals to each other.

2. The electrical connector according to claim 1, wherein: The insulating body includes a first insulating block injection-molded on the first conductive terminal and an insulating frame having a docking groove for accommodating the first conductive block. The main body of the first conductive terminal is fixed on the first insulating block, and the elastic contact arm of the first conductive terminal extends out of the first insulating block and protrudes into the docking groove.

3. The electrical connector according to claim 2, wherein: In the terminal thickness direction, the size of the elastic contact arm of the first ground terminal is larger than the size of the elastic contact arm of the first signal terminal pair.

4. The electrical connector according to claim 2, wherein: In the terminal thickness direction, the size of the main body of the first ground terminal is larger than the size of the main body of the first signal terminal pair. When viewed from the first direction, the main body of the first signal terminal pair is completely covered by the main body of the first ground terminal. In the terminal thickness direction, the main body of the first ground terminal exposes the side of the first insulating block. The first connecting member is attached to the side of the first insulating block to electrically contact the main body of the first ground terminal. The main body of the first signal terminal pair is surrounded by the first connecting member and the main bodies of the two first ground terminals on both sides of the first signal terminal pair.

5. The electrical connector according to claim 2, wherein: In the terminal thickness direction, the size of the main body of the first ground terminal is larger than the size of the main body of the first signal terminal pair. When viewed from the first direction, the main body of the first signal terminal pair is completely covered by the main body of the first ground terminal. In the terminal thickness direction, the main body of the first ground terminal has a convex portion protruding out of the first insulating block, and the first connecting member is injection molded on the convex portion to electrically connect the plurality of first ground terminals to each other.

6. The electrical connector according to claim 5, wherein: The protrusion includes a rectangular first protrusion formed by protruding from a main body of the first ground terminal and an inverted triangle second protrusion formed by protruding from the first protrusion.

7. The electrical connector according to claim 1, wherein: The first connector is a rectangular block extending along the first direction and covering the main body of the first ground terminal and the first signal terminal pair on one side in the terminal thickness direction. The first connector is spaced apart from the main body of the first signal terminal pair in the terminal thickness direction.

8. The electrical connector according to claim 2, wherein: The electrical connector includes a row of second conductive terminals located on opposite sides of the docking groove with a row of first conductive terminals, the second conductive terminals include a main body, an elastic contact arm and a pin portion, the insulating body includes a second insulating block injection molded with the main body of the second conductive terminal, the first insulating block and the second insulating block are assembled and loaded into the insulating frame, a row of second conductive terminals includes second grounding terminals and second signal terminal pairs alternately arranged along a first direction, in the terminal thickness direction, the size of the second grounding terminal is larger than the size of the second signal terminal pair, the electrical connector includes a second connecting piece made of an electrically lossy material and arranged on one side of the second conductive terminal in the terminal thickness direction, the second connecting piece electrically connects a plurality of second grounding terminals to each other.

9. The electrical connector according to claim 8, wherein: A first connecting member electrically connected to a plurality of first grounding terminals is arranged on the inner side of a row of first conductive terminals in the terminal thickness direction, the first connecting member extends along the first direction and is separated from a plurality of first signal terminal pairs, and a second connecting member electrically connected to a plurality of second grounding terminals is arranged on the inner side of a row of second conductive terminals in the terminal thickness direction, the second connecting member extends along the first direction and is separated from a plurality of second signal terminal pairs.

10. The electrical connector according to claim 8, wherein: In the terminal thickness direction, the first insulating block and the second insulating block have opposite inner side surfaces, the first connecting member is abutted against the inner side surface of the first insulating block, and the second connecting member is abutted against the inner side surface of the second insulating block. In the terminal thickness direction, the main body of the first signal terminal pair is buried in the inner side surface of the first insulating block, and the main body of the second signal terminal pair is buried in the inner side surface of the second insulating block. The main body of the first grounding terminal is exposed from the inner side surface of the first insulating block to electrically contact with the first connecting member, and the main body of the second grounding terminal is exposed from the inner side surface of the second insulating block to electrically contact with the second connecting member.

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