Electric connector

Abstract

An electric connector comprises an insulating body and a first conductive terminal, the insulating body comprises a first insulating block for holding the first conductive terminal and an insulating frame for accommodating the first insulating block, and the first conductive terminal is provided with a main body part held on the first insulating block, and an elastic contact arm and a pin part which are respectively formed by extending from two ends of the main body part; the first conductive terminal comprises a first grounding terminal and a first signal terminal pair which are alternately arranged along a first direction, the size of a main body part of the first grounding terminal is larger than that of a main body part of the first signal terminal pair in the thickness direction of the terminal, and a first connecting piece is arranged on one side of the thickness direction of the terminal; the first connecting piece comprises a substrate and a shielding plate, the substrate is electrically connected with the first grounding terminals, the shielding plate is formed by extending from the substrate and covers the first signal terminal pairs, and the large-size first grounding terminals can effectively reduce signal crosstalk of the adjacent first signal terminal pairs. And the shielding plate corresponding to the elastic contact arm of the first signal terminal pair can effectively reduce external signal interference.

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] The high-frequency electrical connector disclosed in China Utility Model Patent No. CN209169425U reduces signal crosstalk of the electrical connector by adding a grounding piece. However, as the transmission rate of the electrical connector becomes higher and higher, when transmitting high-speed signals, external interference signals and their own differential mode signal crosstalk have a huge impact on the signal transmission quality and speed, and simply adding a grounding piece 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, the insulating body comprising a first insulating block fixed on the first conductive terminal and an insulating frame with a docking groove for accommodating the first insulating block, the first conductive terminal comprising a main body portion fixed on the first insulating block, an elastic contact arm extending from one end of the main body portion to extend the first insulating block, and a pin portion extending from the other end of the main body portion to extend the first insulating block, 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, in the terminal thickness direction, the size of the main body portion of the first grounding terminal is larger than the size of the main body portion of the first signal terminal pair, the electrical connector comprising a first connecting member arranged on one side of the first conductive terminal in the terminal thickness direction, the first connecting member comprising a substrate extending along the first direction to electrically connect the plurality of first grounding terminals to each other and a shielding plate extending from the substrate to cover the first signal terminal pair.

[0006] Furthermore, the first insulating block is injection molded on the main body of the first conductive terminal, the elastic contact arm extends upward from the main body to form the first insulating block, the pin portion extends downward from the main body to form the first insulating block, the surface of the first insulating block is concave to form a groove for accommodating the substrate, and the substrate extends to form a plurality of shielding plates that respectively cover a plurality of the first signal terminal pairs.

[0007] Furthermore, stoppers are formed on the upper and lower sides of the groove to limit the substrate in the upper and lower directions, and the stoppers on the upper side of the groove are provided with a plurality of partition grooves for accommodating the shielding plate and limit blocks between the partition grooves in the first direction, and the shielding plate is located between adjacent limit blocks at the upper limit of the first direction and extends upward from the partition groove to the first signal terminal pair.

[0008] Further, the first connecting member is a plate-shaped component provided on at least one side of a row of the first conductive terminals in a terminal thickness direction.

[0009] Furthermore, the main body of the first grounding terminal protrudes out of the first insulating block in the terminal thickness direction to form a convex portion, and the first connecting member has a matching groove matching with the convex portion.

[0010] Furthermore, the main body and the protrusion of the first grounding terminal protrude out of the first insulating block in the terminal thickness direction, and in the terminal thickness direction of a row of the first conductive terminals, the first connecting member is separated from the first signal terminal pair and abuts against the main body of the first grounding terminal.

[0011] Furthermore, the protrusion includes a vertical portion protruding from the main body of the first grounding terminal and an extension portion bent downward from the vertical portion. After the vertical portion is inserted into the matching groove of the first connecting member, the extension portion is bent in the first direction to be pressed on the plate surface of the first connecting member.

[0012] Further, 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 main body of the second grounding terminal is larger than the size of the main body of the second signal terminal pair, the electrical connector includes a second connecting member arranged on one side of the second conductive terminal in the terminal thickness direction, the second connecting member includes a substrate extending along the first direction to electrically connect a plurality of second grounding terminals to each other, and a plurality of shielding plates extending from the substrate and respectively covering a plurality of second signal terminal pairs.

[0013] Further, the first connecting member includes an outer connecting member arranged on the outer side of the first conductive terminal in the terminal thickness direction and an inner connecting member arranged on the inner side of the first conductive terminal in the terminal thickness direction, the outer connecting member has the substrate and the shielding plate, the inner connecting member has the substrate that electrically connects a plurality of first grounding terminals to each other but does not have the shielding plate, and the second connecting member includes an outer connecting member arranged on the outer side of the second conductive terminal in the terminal thickness direction and an inner connecting member arranged on the inner side of the second conductive terminal in the terminal thickness direction, the outer connecting member has the substrate and the shielding plate, and the inner connecting member has the substrate that electrically connects a plurality of second grounding terminals to each other but does not have the shielding plate.

[0014] Furthermore, the main bodies of the first grounding terminals of a row of the first conductive terminals protrude out of the first insulating block on both sides in the terminal thickness direction, and the outer connecting member and the inner connecting member are respectively attached to both sides of the main body of the first grounding terminal to surround the main body of the first signal terminal pair; the main bodies of the second grounding terminals of a row of the second conductive terminals protrude out of the second insulating block on both sides in the terminal thickness direction, and the outer connecting member and the inner connecting member are respectively attached to both sides of the main body of the second grounding terminal to surround the main body of the second signal terminal pair.

[0015] Compared with the prior art, in the electrical connector of the utility model, 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, so that in the first direction, the first grounding terminal can form a shield for the first signal terminal pair in the first direction, and the first connecting member connects a plurality of first grounding terminals in series, so that the first connecting member together with the first grounding terminal forms a multi-sided surrounding shield for the first signal terminal pair, effectively reducing signal crosstalk between adjacent first signal terminal pairs, and the shielding plate provided on the first connecting member corresponding to the elastic contact arm of the first signal terminal pair can effectively reduce the interference of external signals on the electrical connector, and the high-frequency performance of the electrical connector is excellent.

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.

[0023] Figure 8 It is a side view schematic diagram of a first ground terminal, a first signal terminal pair and the first connecting member.

[0024] Fig. 9 yes Figure 1 Section view along line AA.

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

[0026] Fig.11 yes Figure 1 Cross-sectional view along line CC. [Specific implementation method]

[0027] See also Figure 1-10 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 insulating body 1 is recessed to form the docking groove 101, and the row of first conductive terminals 2 and the row of second conductive terminals 3 are respectively located at opposite sides of the docking groove 101. The insulating body 1 includes a first insulating block 11, a second insulating block 12 and an insulating frame 13, one end of the insulating frame 13 is recessed to form the docking groove 101 and the other end is recessed to form an assembly groove 102. The row of first conductive terminals 2 is injection molded on the first insulating block 11, and the row of 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 assembly groove 102.

[0029] The first conductive terminal 2 includes a main body 21 fixed to the first insulating block 11, an elastic contact arm 22 extending upward from one end of the main body 21 out of the first insulating block 11, and a pin 33 extending downward from the other end of the main body 21 out of the first insulating block 11. 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 up-down 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 arranged alternately in the first direction. In the thickness direction of the terminal, the size of the first grounding terminal 201 is larger than that 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 grounding terminal 201, thereby reducing signal crosstalk between adjacent first signal terminal pairs 202. In this embodiment, the terminal plate surface of the first grounding terminal 201 is perpendicular to the terminal plate surface of the first signal terminal pair 202. The first grounding terminal 201 is formed by directly punching out a metal plate, while the first signal terminal pair 202 is formed by further bending after punching out a metal plate. The rigidity of the first grounding 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 that of the elastic contact arm 22 of the first signal terminal pair 202. Thus, when viewed from the first direction, the elastic contact arm 22 of the first signal terminal pair 202 is completely covered by the elastic contact arm 22 of the first grounding terminal 201, further reducing the signal crosstalk between adjacent first signal terminal pairs 202. The plate surface of the main body 21 of the grounding terminal 201 is provided with an opening 210, and the opening 210 ensures that the first insulating block 11 is reliably combined with the first grounding terminal 201.

[0030] The electrical connector 100 includes a first connector 4 disposed on one side of the first conductive terminal 2 in the terminal thickness direction. The first connector is a plate-shaped member. The first connector 4 includes a substrate 41 extending along a first direction to electrically connect a plurality of first grounding terminals 201 to each other, and a shielding plate 42 extending from the substrate 41 to cover the first signal terminal pairs 202. In the present invention, the upper end of the substrate 41 extends upward to form a plurality of shielding plates 42 that respectively cover the plurality of first signal terminal pairs 202. Specifically, a groove 110 is formed on the surface of the first insulating block 11 and blocks 111 are formed on the upper and lower sides of the groove 110. The substrate 41 is received in the groove 110 and is stopped by the blocks 111 in the upper and lower directions. The blocks 111 on the upper side of the groove 110 are provided with a plurality of partition grooves 1111 for accommodating the shielding plate 42 in the first direction and limit blocks 1112 located between the partition grooves 1111. The shielding plate 42 is located between adjacent limit blocks 1112 at the upper limit of the first direction and extends upward from the partition grooves 1111 to the first signal terminal pair 202 to cover the first signal terminal pair 202.

[0031] The main body 21 of the first grounding terminal 201 protrudes out of the first insulating block 11 in the terminal thickness direction to form a convex portion 211, and the first connecting member 4 is provided with a matching groove 43 that matches with the convex portion 211. In this embodiment, the main body 21 of the first grounding terminal 201 also protrudes out of the first insulating block 11 in the terminal thickness direction. In the terminal thickness direction of a row of the first conductive terminals 2, the first connecting member 4 is spaced apart from the first signal terminal pair 202. The first connecting member 4 is attached to the main body 21 of the first grounding terminal 201, and the convex portion 211 passes through the matching groove 43 and is pressed on the board surface of the first connecting member 4. Specifically, the convex portion 211 includes a vertical portion 2111 protruding from the main body 21 of the first grounding terminal 201 and an extension portion 2112 bent downward and extended from the vertical portion 2111. After the vertical portion 2111 is inserted into the matching groove 43 of the first connecting member 4, the extension portion 2112 is bent in the first direction to be pressed on the board surface of the first connecting member 4.

[0032] The second conductive terminal 3 includes a main body 31 fixed to the second insulating block 12, an elastic contact arm 32 extending upward from one end of the main body 31 and out of the second insulating block 12, and a pin 33 extending downward from the other end of the main body 31 and 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, and includes a plurality of second grounding terminals 301 and a plurality of second signal terminal pairs 302 arranged alternately along a first direction. In the terminal thickness direction, the size 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 completely covered by the main body 31 and the elastic contact arm 32 of the second grounding terminal 301, thereby reducing signal interference between adjacent second signal terminal pairs 302.

[0033] The electrical connector 100 includes a second connector 5 disposed on one side of a row of second conductive terminals 3 in the terminal thickness direction. The second connector 5 is a plate-shaped member. The second connector 5 includes a substrate 51 extending along a first direction to electrically connect a plurality of second grounding terminals 301 to each other and a shielding plate 52 extending from the substrate 51 to cover the second signal terminal pairs 302. The upper end of the substrate 51 extends upward to form a plurality of shielding plates 52 that respectively cover the plurality of second signal terminal pairs 302. Specifically, the surface of the second insulating block 12 is concavely formed to form a groove 120 and blocks 121 are formed on the upper and lower sides of the groove 120. The substrate 51 is received in the groove 120 and is stopped by the blocks 121 in the upper and lower directions. The blocks 121 on the upper side of the groove 120 are provided with a plurality of separation grooves 1211 for accommodating the shielding plate 52 in the first direction and stop blocks 1212 located between the separation grooves 1211. The shielding plate 52 is located between adjacent stop blocks 1212 at the upper limit in the first direction and extends upward from the separation grooves 1211 to the second signal terminal pair 302 to cover the second signal terminal pair 302. The mating side of the first insulating block 11 is provided with a T-shaped protrusion 112, and the mating side of the second insulating block 12 is provided with a T-shaped groove 122 that matches the protrusion 112.

[0034] The main body 31 of the second grounding terminal 301 protrudes out of the second insulating block 12 in the terminal thickness direction to form a convex portion 311, and the second connecting member 5 is provided with a matching groove 53 that matches with the convex portion 311. In this embodiment, the main body 31 of the second grounding terminal 301 also protrudes out of the second insulating block 12 in the terminal thickness direction. In the terminal thickness direction of a row of second conductive terminals 3, the second connecting member 5 is spaced apart from the second signal terminal pair 302, and the second connecting member 5 is attached to the main body 31 of the second grounding terminal 301. The convex portion 311 passes through the matching groove 53 and is pressed on the board surface of the second connecting member 5. Similarly, the convex portion 311 includes a vertical portion 3111 protruding from the main body 31 of the second grounding terminal 301 and an extension portion 3112 bent downward and extended from the vertical portion 3111. The vertical portion 3111 is inserted into the matching groove 53, and the extension portion 3112 is bent in the first direction and then pressed on the board surface of the second connecting member 5.

[0035] In the present invention, both sides of the first conductive terminal 2 in the terminal thickness direction are covered with the first connector 4 electrically connected to the first grounding terminal 201. Specifically, the first connector 4 includes an outer connector 401 arranged on the outer side of the first conductive terminal 2 in the terminal thickness direction and an inner connector 402 arranged on the inner side of the first conductive terminal 2 in the terminal thickness direction. The outer connector 401 has the substrate 41 and the shielding plate 42. The substrate 41 electrically connects a plurality of first grounding terminals 201 to each other. The shielding plate 42 shields the outer side of the first signal terminal pair 202. The inner connector 402 has the substrate 41 electrically connecting a plurality of first grounding terminals 201 to each other but does not have the shielding plate 42. Both sides of the second conductive terminal 3 in the terminal thickness direction are covered with the second connecting member 5 electrically connected to the second grounding terminal 301. Specifically, the second connecting member 5 includes an outer connecting member 501 arranged on the outer side of the second conductive terminal 3 in the terminal thickness direction and an inner connecting member 502 arranged on the inner side of the second conductive terminal 3 in the terminal thickness direction. The outer connecting member 501 has the substrate 51 and the shielding plate 52. The substrate 52 electrically connects a plurality of second grounding terminals 301 to each other. The shielding plate 52 shields the outer side of the second signal terminal pair 302. The inner connecting member 502 has the substrate 51 electrically connecting a plurality of second grounding terminals 301 to each other but does not have the shielding plate 502. The main bodies 21 of the first grounding terminals 201 of a row of the first conductive terminals 2 protrude out of the first insulating block 11 on both sides in the terminal thickness direction, and the outer connecting members 401 and the inner connecting members 402 are respectively attached to both sides of the main body 21 of the first grounding terminals 201 to surround the main body 21 of the first signal terminal pair 202. The main bodies 31 of the second grounding terminals 301 of a row of the second conductive terminals 3 protrude out of the second insulating block 12 on both sides in the terminal thickness direction, and the outer connecting members 501 and the inner connecting members 502 are respectively attached to both sides of the main body 31 of the second grounding terminals 301 to surround the main body 31 of the second signal terminal pair 302.First, the outer connector 401 of the first connector 4 and the outer connector 501 of the second connector 5 can effectively reduce the interference of external signals on the electrical connector 100. Secondly, the inner connector 402 of the first connector 4 and the inner connector 502 of the second connector 5 can effectively reduce the signal interference between the first conductive terminal 2 and the second conductive terminal 3. Furthermore, the inner and outer connectors of the first connector 4 combined with the multi-side encirclement of the first signal terminal pair 202 by the first grounding terminal 201 and the inner and outer connectors of the second connector 5 combined with the multi-side encirclement of the second signal terminal pair 302 by the second grounding terminal 301 can effectively reduce the signal crosstalk between adjacent signal terminal pairs of the two rows of conductive terminals, thereby making the high-frequency performance of the electrical connector 100 excellent.

[0036] 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, the insulating body comprising a first insulating block fixed to the first conductive terminal and an insulating frame having a docking groove for accommodating the first insulating block, the first conductive terminal comprising a main body portion fixed to the first insulating block, an elastic contact arm extending from one end of the main body portion out of the first insulating block, and a pin portion extending from the other end of the main body portion out of the first insulating block, the row of 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 being arranged alternately in the first direction, characterized in that: 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. The electrical connector includes a first connecting member arranged on one side of the terminal thickness direction of the first conductive terminal. The first connecting member includes a substrate extending along the first direction to electrically connect a plurality of first ground terminals to each other and a shielding plate extending from the substrate to cover the first signal terminal pair.

2. The electrical connector according to claim 1, wherein: The first insulating block is injection molded on the main body of the first conductive terminal, the elastic contact arm extends upward from the main body to form the first insulating block, the pin portion extends downward from the main body to form the first insulating block, the surface of the first insulating block is concave to form a groove for accommodating the substrate, and the substrate extends to form a plurality of shielding plates respectively covering a plurality of the first signal terminal pairs.

3. The electrical connector according to claim 2, wherein: The upper and lower sides of the groove form stop blocks that limit the substrate in the upper and lower directions. The stop block on the upper side of the groove is provided with a plurality of partition grooves for accommodating the shielding plate and limit blocks located between the partition grooves in the first direction. The shielding plate is located between adjacent limit blocks at the upper limit of the first direction and extends upward from the partition groove to the first signal terminal pair.

4. The electrical connector according to claim 2, wherein: The first connecting member is a plate-shaped component disposed on at least one side of a row of the first conductive terminals in a terminal thickness direction.

5. The electrical connector according to claim 4, wherein: The main body of the first grounding terminal protrudes out of the first insulating block in the terminal thickness direction to form a convex portion, and the first connecting member has a matching groove that matches with the convex portion.

6. The electrical connector according to claim 5, wherein: The main body and the protrusion of the first grounding terminal protrude out of the first insulating block in the terminal thickness direction. In the terminal thickness direction of a row of the first conductive terminals, the first connecting member is separated from the first signal terminal pair and abuts against the main body of the first grounding terminal.

7. The electrical connector according to claim 5, wherein: The protrusion includes a vertical portion protruding from the main body of the first grounding terminal and an extension portion bent downward and extended from the vertical portion. After the vertical portion is inserted into the matching groove of the first connecting member, the extension portion is bent in the first direction to be pressed on the plate surface of the first connecting member.

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, 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 main body of the second grounding terminal is larger than the size of the main body of the second signal terminal pair, the electrical connector includes a second connecting member arranged on one side of the second conductive terminal in the terminal thickness direction, the second connecting member includes a substrate extending along the first direction to electrically connect a plurality of second grounding terminals to each other and a plurality of shielding plates extending from the substrate and respectively covering a plurality of second signal terminal pairs.

9. The electrical connector according to claim 8, wherein: The first connecting member includes an outer connecting member arranged on the outer side of the first conductive terminal in the terminal thickness direction and an inner connecting member arranged on the inner side of the first conductive terminal in the terminal thickness direction, the outer connecting member has the substrate and the shielding plate, the inner connecting member has the substrate that electrically connects a plurality of first grounding terminals to each other but does not have the shielding plate, and the second connecting member includes an outer connecting member arranged on the outer side of the second conductive terminal in the terminal thickness direction and an inner connecting member arranged on the inner side of the second conductive terminal in the terminal thickness direction, the outer connecting member has the substrate and the shielding plate, and the inner connecting member has the substrate that electrically connects a plurality of second grounding terminals to each other but does not have the shielding plate.

10. The electrical connector according to claim 9, wherein: The main bodies of the first grounding terminals of a row of the first conductive terminals protrude out of the first insulating block on both sides in the terminal thickness direction, and the outer connecting member and the inner connecting member are respectively attached to both sides of the main body of the first grounding terminal to surround the main body of the first signal terminal pair. The main bodies of the second grounding terminals of a row of the second conductive terminals protrude out of the second insulating block on both sides in the terminal thickness direction, and the outer connecting member and the inner connecting member are respectively attached to both sides of the main body of the second grounding terminal to surround the main body of the second signal terminal pair.

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