Electric connector

Abstract

An electric connector comprises a shell with a butt joint groove, a first terminal module and a first insulation block which fixes the first terminal module on the shell, and the first terminal module 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 terminal comprises a first main body part which is fixedly held on the first insulating block and a first elastic contact arm which extends out of the first insulating block from one end of the first main body part to the side where the butt joint groove is located, and the first elastic contact arm is provided with a first contact part which protrudes into the butt joint groove in a second direction perpendicular to the first direction; the first signal terminal pair comprises a second main body part which is fixedly held on the first insulating block and a second elastic contact arm which extends out of the first insulating block from one end of the second main body part to the side where the butt joint groove is located, and the second elastic contact arm is provided with a second contact part which protrudes into the butt joint groove in a second direction; the first elastic contact arms of the first grounding terminal and the second elastic contact arms of the first signal terminal pair are alternately arranged in the first direction, the first signal terminal pair comprises a pair of first differential signal terminals, and the second contact parts of the first differential signal terminals are formed by stamping and tearing the second elastic contact arms. The width of the second contact part in the first direction is smaller than the width of the free tail end of the second elastic contact arm. The narrower second contact part of the second elastic contact arm is torn to adjust impedance, and the wider size of the free tail end of the second elastic arm is beneficial to cutting of the material belt.

Description

[Technical field]

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

[0002] Chinese invention patent No. CN110867681B discloses an electrical connector, including two rows of conductive terminals, each of which includes a fixed portion, an elastic contact arm with a contact portion, and a pin, and each row of conductive terminals includes a plurality of grounding terminals and a plurality of signal terminal pairs, and the grounding terminals and the signal terminals are arranged alternately. However, in the electrical connector, the wider contact portion of the signal terminal will result in too low impedance at the contact portion, and if the elastic contact arm is narrowed to increase the impedance by making the contact portion narrow synchronously, this will cause the material strip connected to the free end of the elastic contact arm to be unstable, which is not conducive to the cutting operation of the material strip.

[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 and better manufacturability.

[0005] In order to solve the above technical problems, the utility model can adopt the following technical solutions: an electrical connector, comprising a shell having a docking groove, a first terminal module and a first insulating block for fixing the first terminal module on the shell, the first terminal module comprising a plurality of first grounding terminals and a plurality of first signal terminal pairs arranged along a first direction, the first grounding terminal comprising a first main body portion fixed on the first insulating block and a first elastic contact arm extending from one end of the first main body portion to the side where the docking groove is located out of the first insulating block, the first elastic contact arm having a first contact portion protruding into the docking groove in a second direction perpendicular to the first direction, the first signal terminal pair comprising a second main body portion fixed on the first insulating block and a second elastic contact arm extending from one end of the second main body portion to the side where the docking groove is located out of the first insulating block, the second elastic contact arm having a second contact portion protruding into the docking groove in a second direction, the first elastic contact arm of the first grounding terminal and the second elastic contact arm of the first signal terminal pair are alternately arranged in the first direction, the first signal terminal pair comprises a pair of first differential signal terminals, the second contact portion of the first differential signal terminal is formed by stamping and tearing from the second elastic contact arm, and the width of the second contact portion in the first direction is smaller than the width of the free end of the second elastic contact arm.

[0006] Further, the width of the free end of the second elastic contact arm is greater than the width of the free end of the first elastic contact arm.

[0007] Furthermore, a width of the second contact portion is smaller than a width of the first contact portion.

[0008] Furthermore, the second contact portion is torn from one side of the first direction of the second elastic contact arm along the second direction toward the docking groove, and the second elastic contact arm forms an untorn portion beside the second contact portion in the first direction, and the untorn portions of several first signal terminal pairs are not blocked by the first grounding terminal in the first direction.

[0009] Furthermore, the second contact portion is torn from one side of the first direction of the second elastic contact arm toward the docking groove along the second direction, and the second contact portions of two adjacent first differential signal terminals are torn at adjacent sides of the two adjacent first differential signal terminals.

[0010] Further, the thickness of the second contact portion is smaller than the thickness of the first contact portion.

[0011] Further, the electrical connector includes a second terminal module opposite to the first terminal module in the second direction and a second insulating block that fixes the second terminal module to the housing, the second terminal module includes a plurality of second grounding terminals and a plurality of second signal terminal pairs arranged along the first direction, the second grounding terminal includes a third main body portion fixed to the second insulating block and a third elastic contact arm extending from one end of the third main body portion to the side where the docking groove is located out of the second insulating block, the third elastic contact arm has a third contact portion protruding into the docking groove in the second direction, the second signal terminal pair includes a fourth main body portion fixed to the second insulating block and a third elastic contact arm extending from one end of the third main body portion to the side where the docking groove is located, the third elastic contact arm has a third contact portion protruding into the docking groove in the second direction, the second signal terminal pair includes a fourth main body portion fixed to the second insulating block and a third elastic contact arm extending from one end of the fourth main body portion to the side where the docking groove is located A fourth elastic contact arm of the second insulating block extends toward the side where the docking groove is located, the fourth elastic contact arm has a fourth contact portion protruding into the docking groove in the second direction, the first and second elastic contact arms and the third and fourth elastic contact arms are located on both sides of the docking groove in the second direction, the third elastic contact arm of the second grounding terminal and the fourth elastic contact arm of the second signal terminal pair are alternately arranged in the first direction, the second signal terminal pair includes a pair of second differential signal terminals, the fourth contact portion of the second differential signal terminal is formed by stamping and tearing the fourth elastic contact arm, and the width of the fourth contact portion in the first direction is less than the width of the free end of the fourth elastic contact arm.

[0012] Furthermore, the first grounding terminal extends from the first insulating block at the other end of the first main body to form a fifth elastic contact arm, the first signal terminal extends from the first insulating block at the other end of the second main body to form a sixth elastic contact arm, the second grounding terminal extends from the second insulating block at the other end of the third main body to form a seventh elastic contact arm, and the second signal terminal extends from the second insulating block at the other end of the fourth main body to form an eighth elastic contact arm.

[0013] Further, the first main body portion of the first grounding terminal has a first concave portion bent inwardly in the second direction and arranged closer to the inside than the second main body portion, and the second main bodies of the adjacent first differential signal terminals are bent in the first direction toward the first concave portions of the first grounding terminals adjacent thereto to form first bent portions away from each other, and the third main body portion of the second grounding terminal has a second concave portion bent inwardly in the second direction and arranged closer to the inside than the fourth main body portion, and the fourth main bodies of the adjacent second differential signal terminals are bent in the first direction toward the second concave portions of the second grounding terminals adjacent thereto to form second bent portions away from each other.

[0014] Furthermore, the first concave portions of adjacent first grounding terminals are connected to each other in the first direction through a first connecting plate, the first connecting plate is located on the inner side of the second main body and is separated from the second main body, and the second concave portions of adjacent second grounding terminals are connected to each other in the first direction through a second connecting plate, the second connecting plate is located on the inner side of the fourth main body and is separated from the fourth main body.

[0015] Compared with the prior art, in the electrical connector of the utility model, the second elastic contact arm of the first signal terminal pair has a wider size, so that the material strip connected to the free end of the second elastic contact arm has reliable stability, so that the material strip can be reliably cut, and the second contact portion is torn from the second elastic contact arm to form a narrower size, which can increase the impedance at the second contact portion, so that the electrical connector has better high-frequency performance.

Brief Description of the Drawings

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

[0017] Figure 2 It is a three-dimensional exploded view of the electric connector of the utility model.

[0018] Figure 3 This is a three-dimensional exploded view of the electric connector of the utility model with the shell removed.

[0019] Figure 4 yes Figure 3A three-dimensional view without the first insulating block and the second insulating block.

[0020] Figure 5 yes Figure 4 Front view of .

[0021] Figure 6 It is a three-dimensional exploded view of the first terminal module and the second terminal module of the electrical connector of the utility model.

[0022] Figure 7 It is a top view of the first terminal module of the electrical connector of the utility model. [Specific implementation method]

[0023] See also Figure 1-7 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 includes a first terminal module 1, a first insulating block 2 for holding the first terminal module 1, a second terminal module 3, a second insulating block 4 for holding the second terminal module 3, and a housing 5. The front end of the housing 5 is provided with a docking groove 51 and the rear end forms a mounting groove 52, the docking groove 51 is for plugging a docking connector (not shown) or a circuit board (not shown), and the mounting groove 52 is for the first insulating block 2 and the second insulating block 4 to respectively hold the first terminal module 1 and the second terminal module 3 in the housing 5.

[0024] The first terminal module 1 includes a plurality of first grounding terminals 11 and a plurality of first signal terminal pairs 12 arranged along a first direction, wherein the first grounding terminal 11 includes a first main body 111 fixed to the first insulating block 2 and a first elastic contact arm 112 extending from one end of the first main body 111 to the side where the docking groove 51 is located, and the first elastic contact arm 112 has a first contact portion 1121 protruding into the docking groove 51 in a second direction perpendicular to the first direction, and the first signal terminal pair 12 includes a second main body 121 fixed to the first insulating block 2 and a second elastic contact arm 122 extending from one end of the second main body 121 to the side where the docking groove 51 is located, and the second elastic contact arm 122 has a second contact portion 1221 protruding into the docking groove 51 in a second direction. The first elastic contact arms 112 of the first grounding terminal 11 and the second elastic contact arms 122 of the first signal terminal pair 12 are alternately arranged in the first direction, and the first signal terminal pair 12 includes a pair of first differential signal terminals 120.

[0025] In the present utility model, the second terminal module 3 is opposite to the first terminal module 1 in the second direction, and the second terminal module 3 includes a plurality of second grounding terminals 31 and a plurality of second signal terminal pairs 32 arranged along the first direction, the second grounding terminal 31 includes a third main body portion 311 fixed on the second insulating block 4 and a third elastic contact arm 312 extending from one end of the third main body portion 311 to the side where the docking groove 51 is located, and the third elastic contact arm 312 has a third contact portion 3121 protruding into the docking groove 51 in the second direction, and the second signal terminal pair 32 includes a fourth main body portion 321 fixed on the second insulating block 4 and a fourth elastic contact arm 322 extending from one end of the fourth main body portion 321 to the side where the docking groove 51 is located, and the fourth elastic contact arm 322 has a fourth contact portion 3221 protruding into the docking groove 51 in the second direction. The third elastic contact arms 312 of the second grounding terminal 31 and the fourth elastic contact arms 322 of the second signal terminal pair 32 are arranged alternately in the first direction, and the second signal terminal pair 32 includes a pair of second differential signal terminals 320. The third elastic contact arms 312 of the second grounding terminal 31 and the first elastic contact arms 112 of the first grounding terminal 11 are located on opposite sides of the docking slot 51 in the second direction, and the fourth elastic contact arms 322 of the second signal terminal pair 32 and the second elastic contact arms 122 of the first signal terminal pair 12 are located on opposite sides of the docking slot 51 in the second direction, and the first elastic contact arms 112, the second elastic contact arms 122, the third elastic contact arms 312 and the fourth elastic contact arms 322 elastically abut against a docking connector (not shown) or a circuit board (not shown) inserted into the docking slot 51.

[0026] In the present invention, the first grounding terminal 11 extends from the first insulating block 2 at the other end of the first main body 111 to form a fifth elastic contact arm 113, the first signal terminal pair 12 extends from the first insulating block 2 at the other end of the second main body 121 to form a sixth elastic contact arm 123, the second grounding terminal 31 extends from the second insulating block 4 at the other end of the third main body 311 to form a seventh elastic contact arm 313, and the second signal terminal pair 32 extends from the second insulating block 2 at the other end of the fourth main body 321 to form an eighth elastic contact arm 323. The fifth elastic contact arm 113 of the first grounding terminal 11 and the sixth elastic contact arm 123 of the first signal terminal pair 12 are alternately arranged in the first direction, and the seventh elastic contact arm 313 of the second grounding terminal 31 and the eighth elastic contact arm 323 of the second signal terminal pair 32 are alternately arranged in the first direction. After the first insulating block 2 and the second insulating block 4 are assembled, they are inserted into the mounting slot 52 of the housing 5. The fifth elastic contact arm 113, the sixth elastic contact arm 123, the seventh elastic contact arm 313 and the eighth elastic contact arm 323 extend outside the mounting slot 52. The fifth elastic contact arm 113, the sixth elastic contact arm 123, the seventh elastic contact arm 313 and the eighth elastic contact arm 323 elastically abut against another docking connector (not shown) or a circuit board (not shown). Specifically, the first insulating block 2 has a first mating surface 21, and the second insulating block 4 has a second mating surface 41 that matches the first mating surface 21. The first mating surface 21 is concavely formed to form a concave portion 211, and the second mating surface 41 protrudes to form a T-shaped protrusion 411 that matches the concave portion 211. The mating surface 22 of the first insulating block 2 matches the housing 5, and the mating surface 22 is provided with a protrusion 221. The wall surface of the housing 5 is provided with a clamping hole 53 for the protrusion 221 to be clamped and retained.

[0027] The first main body portion 111 of the first grounding terminal 11 of the first terminal module 1 has a first concave portion 114 bent inwardly in the second direction, and the first concave portion 114 is arranged on the inner side of the second main body portion 121. The second main body portions 121 of the adjacent first differential signal terminals 120 are bent toward the first concave portions 114 of the adjacent first grounding terminals 11 in the first direction to form first bent portions 121a and 121b away from each other. The first concave portions 114 of the adjacent first grounding terminals 11 are connected to each other in the first direction through the first connecting plate 115, and the adjacent first connecting plate 115 is located on the inner side of the second main body portion 121 and is separated from the second main body portion 121. The third main body portion 311 of the second grounding terminal 31 of the second terminal module 3 has a second concave portion 314 bent inwardly in the second direction and arranged on the inner side of the fourth main body portion 321. The fourth main body portions 321 of the adjacent second differential signal terminals 320 are bent in the first direction toward the second concave portions 314 of the second grounding terminals 31 adjacent thereto to form second bent portions 321a and 321b away from each other. The second concave portions 314 of the adjacent second grounding terminals 31 are connected to each other in the first direction through a second connecting plate 315. The second connecting plate 315 is located on the inner side of the fourth main body portion 321 and is separated from the fourth main body portion 321.

[0028] In the present invention, the second contact portion 1221 of the first differential signal terminal 120 of the first terminal module 1 is formed by punching and tearing from the second elastic contact arm 122, and the width of the second contact portion 1221 in the first direction is smaller than the width of the free end of the second elastic contact arm 122. Compared with the first grounding terminal 11, the width of the free end of the second elastic contact arm 122 is larger than the width of the free end of the first elastic contact arm 112, and the width of the second contact portion 1221 is smaller than the width of the first contact portion 1121. In this way, the second elastic contact arm 122 of the first signal terminal pair 12 can be set to a wider size, so that the material strip (not shown) connected to the free end of the second elastic contact arm 122 has reliable stability, so that the material strip (not shown) can be reliably cut, and the second contact portion 1221 is torn from the second elastic contact arm 122 to form a narrower size, which can increase the impedance at the second contact portion 1221, so that the electrical connector 100 has better high-frequency performance. Similarly, the fourth contact portion 3221 of the second differential signal terminal 320 of the second terminal module 3 is formed by stamping and tearing the fourth elastic contact arm 322 and has a width smaller than the width of the free end of the fourth elastic contact arm 322, and compared with the second grounding terminal 31, the width of the free end of the fourth elastic contact arm 322 is larger than the width of the free end of the third elastic contact arm 312, and the width of the fourth contact portion 3221 is smaller than the width of the third contact portion 3121. Specifically, the second contact portion 1221 is torn from one side of the first direction of the second elastic contact arm 122 along the second direction toward the docking groove 51, and the second elastic contact arm 122 forms an untorn portion 1222 beside the second contact portion 1221 in the first direction. The untorn portions 1222 of the first signal terminal pairs 12 are not blocked by the first grounding terminal 11 in the first direction. Preferably, the second contact portions 1221 of two adjacent first differential signal terminals 120 are torn by stamping on adjacent sides of two adjacent first differential signal terminals 120, and the thickness of the second contact portion 1221 after stamping is less than the thickness of the first contact portion 1121. The configuration of the second signal terminal 32 of the second terminal module 3 is the same as that of the first signal terminal 12, and will not be repeated here.The better high-frequency performance of the electrical connector 100 of the utility model is achieved in the following ways: the second elastic contact arm 122 and the fourth elastic contact arm 322 with larger widths can provide stability to the material strip connected thereto and achieve stable material strip cutting; the first contact portion 1221 and the fourth contact portion 3221 are formed on the second elastic contact arm 122 of the first signal terminal pair 12 and the fourth elastic contact arm 322 of the second signal terminal pair 32 by stamping and tearing, so that the first contact portion 1221 and the fourth contact portion 3221 have a smaller width to increase the impedance at the contact portion; in addition, the second main body 121 of the adjacent first differential signal terminal 120 is bent to form first bending portions 121a and 121b that are away from each other, and the fourth main body 321 of the adjacent second differential signal terminal 320 is bent to form second bending portions 321a and 321b that are away from each other.

[0029] 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 a housing having a mating groove, a first terminal module, and a first insulating block for fixing the first terminal module to the housing, the first terminal module comprising a plurality of first grounding terminals and a plurality of first signal terminal pairs arranged along a first direction, the first grounding terminal comprising a first main body portion fixed to the first insulating block and a first elastic contact arm extending from one end of the first main body portion to the side where the mating groove is located out of the first insulating block, the first elastic contact arm having a first contact portion protruding into the mating groove in a second direction perpendicular to the first direction, the first signal terminal pair comprising a second main body portion fixed to the first insulating block and a second elastic contact arm extending from one end of the second main body portion to the side where the mating groove is located out of the first insulating block, the second elastic contact arm having a second contact portion protruding into the mating groove in a second direction, the first elastic contact arm of the first grounding terminal and the second elastic contact arm of the first signal terminal pair are alternately arranged in the first direction, the first signal terminal pair comprising a pair of first differential signal terminals, characterized in that: The second contact portion of the first differential signal terminal is formed by punching and tearing from the second elastic contact arm, and the width of the second contact portion in the first direction is smaller than the width of the free end of the second elastic contact arm.

2. The electrical connector according to claim 1, wherein: The width of the free end of the second elastic contact arm is greater than the width of the free end of the first elastic contact arm.

3. The electrical connector according to claim 1, wherein: The width of the second contact portion is smaller than the width of the first contact portion.

4. The electrical connector according to claim 1, wherein: The second contact portion is torn from one side of the first direction of the second elastic contact arm toward the docking groove along the second direction, and the second elastic contact arm forms an untorn portion beside the second contact portion in the first direction, and the untorn portions of several first signal terminal pairs are not blocked by the first grounding terminal in the first direction.

5. The electrical connector according to claim 1, wherein: The second contact portion is torn from one side of the second elastic contact arm in the first direction toward the docking groove along the second direction, and the second contact portions of two adjacent first differential signal terminals are torn at adjacent sides of the two adjacent first differential signal terminals.

6. The electrical connector according to claim 1, wherein: The thickness of the second contact portion is smaller than the thickness of the first contact portion.

7. The electrical connector according to claim 1, wherein: The electrical connector includes a second terminal module opposite to the first terminal module in the second direction and a second insulating block that fixes the second terminal module to the housing, the second terminal module includes a plurality of second grounding terminals and a plurality of second signal terminal pairs arranged along the first direction, the second grounding terminal includes a third main body portion fixed to the second insulating block and a third elastic contact arm extending from one end of the third main body portion to the side where the docking groove is located out of the second insulating block, the third elastic contact arm has a third contact portion protruding into the docking groove in the second direction, the second signal terminal pair includes a fourth main body portion fixed to the second insulating block and a third elastic contact arm extending from one end of the fourth main body portion to the side where the docking groove is located A fourth elastic contact arm of the second insulating block extends from the side where the docking groove is located, and the fourth elastic contact arm has a fourth contact portion protruding into the docking groove in the second direction. The first and second elastic contact arms and the third and fourth elastic contact arms are located on both sides of the docking groove in the second direction. The third elastic contact arm of the second grounding terminal and the fourth elastic contact arm of the second signal terminal pair are alternately arranged in the first direction. The second signal terminal pair includes a pair of second differential signal terminals. The fourth contact portion of the second differential signal terminal is formed by stamping and tearing from the fourth elastic contact arm, and the width of the fourth contact portion in the first direction is smaller than the width of the free end of the fourth elastic contact arm.

8. The electrical connector according to claim 7, wherein: The first grounding terminal extends from the first insulating block at the other end of the first main body to form a fifth elastic contact arm, the first signal terminal extends from the first insulating block at the other end of the second main body to form a sixth elastic contact arm, the second grounding terminal extends from the second insulating block at the other end of the third main body to form a seventh elastic contact arm, and the second signal terminal extends from the second insulating block at the other end of the fourth main body to form an eighth elastic contact arm.

9. The electrical connector according to claim 7, wherein: The first main body portion of the first grounding terminal has a first concave portion bent inwardly in the second direction and arranged closer to the inside than the second main body portion, and the second main bodies of the adjacent first differential signal terminals are bent in the first direction toward the first concave portions of the adjacent first grounding terminals to form first bent portions away from each other, and the third main body portion of the second grounding terminal has a second concave portion bent inwardly in the second direction and arranged closer to the inside than the fourth main body portion, and the fourth main bodies of the adjacent second differential signal terminals are bent in the first direction toward the second concave portions of the adjacent second grounding terminals to form second bent portions away from each other.

10. The electrical connector according to claim 9, wherein: The first concave portions of adjacent first grounding terminals are connected to each other in the first direction through a first connecting plate, the first connecting plate is located on the inner side of the second main body and is separated from the second main body, and the second concave portions of adjacent second grounding terminals are connected to each other in the first direction through a second connecting plate, the second connecting plate is located on the inner side of the fourth main body and is separated from the fourth main body.

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