Electrical connector

Abstract

The present application relates to the technical field of electronic devices, and particularly relates to an electric connector, which comprises an insulating body, two rows of terminals, a plurality of inner shielding sheets and two outer shielding sheets; the insulating body is provided with two side walls and a butt joint groove between the side walls; the terminal comprises a main body, an elastic arm and a pin, and the elastic arm is provided with a contact part protruding into the butt joint groove; each row of terminals comprises a plurality of signal terminal pairs and two ground terminals on both sides of each signal terminal pair; each inner shielding sheet is integrally connected with the two ground terminals on both sides of the corresponding signal terminal pair and is located at the inner side of one row of terminals; each outer shielding sheet is located at the outer side of one row of terminals and contacts the ground terminal. In the present application, each signal terminal pair is located between the inner shielding sheet and the outer shielding sheet, which can effectively reduce the interference of internal and external noise on the signal terminal pair, and the inner and outer shielding sheets are both electrically connected with the ground terminal, so that multiple common grounds are achieved, the resonance effect is effectively improved, and the high-frequency high-speed signal transmission performance is improved.

Description

Technical Field

[0001] This invention relates to the field of electronic device technology, and more particularly to an electrical connector. Background Technology

[0002] Electrical connectors consist of signal terminals for transmitting electrical signals and grounding terminals for providing a safe ground. Impedance control of the signal terminals is a critical design element for ensuring signal integrity and reducing reflections and losses. Currently, the industry employs various common-grounding schemes to achieve impedance matching and control of the terminals, such as arranging conductive films or mounting conductive plastic components. However, existing solutions tend to complicate the overall structure of the electrical connector, posing challenges to miniaturization and high-density applications.

[0003] Therefore, it is necessary to provide an improved electrical connector to address the aforementioned problems. Summary of the Invention

[0004] The technical solution to be solved by the present invention is to provide an electrical connector that can improve the performance of high-frequency and high-speed signal transmission.

[0005] This invention provides a technical solution: an electrical connector comprising an insulating body, two rows of terminals, multiple inner shielding plates, and two outer shielding plates; the insulating body has two opposing sidewalls and a mating groove between the two sidewalls; each terminal includes a main body, elastic arms extending from the main body, and pins, the elastic arms having contact portions protruding into the mating groove; each row of terminals includes multiple signal terminal pairs and two grounding terminals located on both sides of each signal terminal pair, each signal terminal pair including two adjacent signal terminals; each inner shielding plate is integrally connected to the two grounding terminals on both sides of the corresponding signal terminal pair, spanning the corresponding signal terminal pair and located inside the row of terminals; each outer shielding plate is located outside the row of terminals and contacts the grounding terminals.

[0006] Compared to existing technologies, each signal terminal pair of the present invention is located between the inner shielding plate and the outer shielding plate. The cooperation between the inner shielding plate and the outer shielding plate can effectively reduce the interference of internal and external noise on the signal terminal pair. At the same time, both the inner and outer shielding components are electrically connected to the grounding terminal to achieve multiple common grounds, which can effectively improve the resonance effect and thus provide a good high-frequency and high-speed signal transmission performance. Attached Figure Description

[0008] Figure 1 A perspective view of the electrical connector provided by the present invention.

[0009] Figure 2 for Figure 1 A three-dimensional view of the electrical connector from another angle.

[0010] Figure 3 for Figure 1 Exploded view of an electrical connector.

[0011] Figure 4 for Figure 1 A 3D view of the electrical connector after the insulation body has been removed.

[0012] Figure 5 for Figure 4 A sectional view along the XX direction.

[0013] Figure 6 for Figure 1 Assembly diagram of the terminal module and outer shielding plate of the electrical connector.

[0014] Figure 7 for Figure 6 A 3D view of the terminal module.

[0015] Figure 8 for Figure 7 Exploded view of the terminal module.

[0016] Figure 9 for Figure 4 Exploded view of the outer shield and retaining element in an electrical connector.

[0017] Explanation of key component symbols: 10. Electrical connectors; 1. Insulating body; 11. Side wall; 12. Connecting groove; 13. Terminal receiving groove; 2. Terminal; 20. Terminal module; 21. Main body; 22. Flexible arm; 221. Contact part; 23. Pin; 24. Signal terminal; 241. Main body; 25. Grounding terminal; 251. Hook part; 26. Insulating block; 261. Stopping block; 262. Protruding rib; 3. Inner shielding sheet; 31. Additional shielding; 4. External shielding sheet; 41. Lower shielding section; 42. Long strip section; 43. Upper shielding section; 44. Riveting hole; 5. Holding components; 51. Crossbeam; 52. Protruding rib; 53. Slot; 54. Riveting protrusion. Detailed Implementation

[0018] The technical solutions of the present invention will now be described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Please refer to Figures 1-3The electrical connector 10 in one embodiment of the present invention includes an insulating body 1, two rows of terminals 2, multiple inner shielding plates 3, and two outer shielding plates 4. The insulating body 1 has a longitudinal structure, with its length direction defined as the longitudinal direction. It has two opposing sidewalls 11 and a mating groove 12 located between the two sidewalls 11. Each sidewall 11 has a row of terminal receiving grooves 13, which connect to the mating grooves 12 and extend upward through the top surface of the sidewall.

[0020] Please refer to Figure 2 and Figure 6 Two rows of terminals 2 are arranged opposite each other and are respectively located on the corresponding side walls. Each row of terminals 2 includes multiple signal terminal pairs and two ground terminals 25 located on both sides of each signal terminal pair. Each signal terminal pair includes two adjacent signal terminals 24. Each of the signal terminal pairs is used to transmit high-speed differential signals and constitutes a differential signal terminal pair.

[0021] Please refer to Figure 7 and Figure 8 Each terminal 2 includes a main body 21, elastic arms 22 extending from both ends of the main body 21, and pins 23. That is, both the signal terminal 24 and the ground terminal 25 include an integrally formed main body 21, elastic arms 22, and pins 23. When the terminal 2 is installed inside the electrical connector 10, the elastic arms 22 of the signal terminal 24 extend upwards into the terminal slot, and the elastic arms 22 of the ground terminal 25 extend upwards into the terminal slot. The elastic arms 22 have contact portions 221 that protrude from the terminal receiving slot 13 into the mating slot 12. The contact portions 221 are used for contact connection with devices such as electronic cards. The pins 23 extend downwards to the bottom of the insulating body 1 and bend outwards, for integral soldering and fixing of the electrical connector 10 to external devices, while simultaneously establishing an electrical path with the external devices.

[0022] Please refer to Figure 3 Multiple inner shielding plates are arranged in two rows, each corresponding to one of the terminals in each row. Please refer to... Figure 6 Each inner shielding plate 3 is integrally connected to the two grounding terminals 25 on both sides of the corresponding signal terminal pair, and it spans the corresponding signal terminal pair along the longitudinal direction and is located inside a row of terminals 2. Please refer to... Figure 4 and Figure 6 Two outer shielding plates 4 are located on the outside of the two rows of terminals 2 respectively, and the outer shielding plates 4 contact all grounding terminals 25. Each signal terminal pair is located between the inner shielding plate 3 and the outer shielding plate 4. The cooperation between the inner shielding plate 3 and the outer shielding plate 4 can effectively reduce the interference of internal and external noise on the signal terminal pair. At the same time, both the inner and outer shielding components are electrically connected to the grounding terminals to achieve multiple common grounds, which can effectively improve the resonance effect and thus provide a good high-frequency and high-speed signal transmission performance.

[0023] For optimization, please refer to... Figure 4The outer shielding plate 4 includes a long strip 42 and a plurality of upper shielding portions 43 extending upward from the long strip 42. The plurality of upper shielding portions 43 are spaced apart. The long strip 42 spans the main body 21 of a row of terminals 2. Each upper shielding portion 43 spans the elastic arm 22 of the corresponding signal terminal pair, or each upper shielding plate spans the elastic arm 22 of the corresponding signal terminal pair and the ground terminal 25. The outer shielding plate 4 used in this invention is a metal copper sheet. The integrated design of the long strip 42 and the upper shielding portions 43 provides good shielding for the terminals 2.

[0024] For optimization, please refer to... Figure 4 and Figure 9 The outer shielding plate 4 is provided with multiple lower shielding portions 41, each of which spans two pins 23 of the corresponding signal terminal pair. This allows for more comprehensive shielding against the influence of noise on the signal terminal pair. Optimally, the lower shielding portions 41 simultaneously abut against the pins 23 of the grounding terminals 25 on both sides of the corresponding signal terminal pair, providing more common ground points. Specifically, the multiple lower shielding portions 41 extend downward from the bottom edge of the elongated portion 42 and bend outward. The bent portion of the lower shielding portion 41 can be formed into a bridge-shaped cantilever through processes such as stamping. The bridge-shaped cantilever spans two pins 23 of the corresponding signal terminal pair, and the two ends of the bridge-shaped cantilever abut against the pins 23 of the grounding terminals 25 on both sides of the corresponding signal terminal pair, so that the grounding terminals 25 in each row of terminals 2 share a common ground. The lower shielding portions 41 can provide a common ground path for the grounding terminals 25 on both sides of each signal terminal pair, and the elongated portion 42, which is integrated with the lower shielding portions 41, achieves overall common grounding for the multiple grounding terminals 25.

[0025] For optimization, please refer to... Figure 8 The inner shielding plate 3 is U-shaped, with the opening of the U-shape facing the signal terminal 24. The two sides of the inner shielding plate 3 are integrally connected to the main body 21 of the grounding terminal 25 and span across the main body 21 of the corresponding signal terminal pair. The U-shaped inner shielding plate 3 surrounds the inside and sides of the signal terminal pair, providing a good shielding effect.

[0026] In the optimized design, the inner shielding plate 3 extends downward to form an additional shielding portion 31, which extends to the bottom surface of the insulating body 1. This allows the additional shielding portion 31 to further shield the signal terminal pairs along the thickness direction of the insulating body 1, further blocking crosstalk. If the PCB board where the electrical connector 10 is mounted has pads, the pads can overlap with the additional shielding portion 31 to create a low-impedance, continuous grounding and shielding path.

[0027] In this embodiment, please refer to Figure 7 and Figure 8Each signal terminal pair has its main body 21 fixed to an insulating block 26 at intervals. After the signal terminal 24 is fixed, the elastic arm 22 is located on the upper part of the insulating block 26, and the pin 23 is located on the lower part of the insulating block 26. The main body 21 of the ground terminal 25 extends out a hook portion 251 with the opening of the hook portion 251 facing upward. The hook portions 251 of the two ground terminals 25 are engaged with the two opposite sides of the insulating block 26, so that the signal terminal 24 is installed and fixed inside the inner shielding plate 3 through the insulating block 26, thereby forming a terminal module 20. At this time, the two ground terminals 25 are located between a pair of signal terminals. In each terminal module 20, the ground terminal 25 can provide grounding shielding and a low-impedance return path for the intermediate signal terminal pair.

[0028] For optimization, please refer to... Figure 7 and Figure 8 When the insulating block 26 is snapped onto the hook portion 251 of the grounding terminal 25, part of the hook portion 251 protrudes from the outer surface of the insulating block 26, so that after the outer shielding plate 4 is installed, the hook portion 251 of the grounding terminal 25 abuts against the outer shielding plate 4, and the inner shielding plate 3 overlaps the outer shielding plate 4 through the grounding terminal 25, which can improve the integrity of the common ground shield.

[0029] For optimization, please refer to... Figure 7 and Figure 8 The inner surface of the insulating block 26 has a stop block 261 near its top surface, and the inner shielding plate 3 abuts against the stop block 261 upwards. The two sides of the insulating block 26 have rectangular protruding ribs 262, and the hook portion 251 has an upward-opening L-shaped structure that engages with the protruding ribs 262 of the insulating block 26. The stop block 261 prevents the insulating block 26 from shifting downwards relative to the grounding terminal 25, and the protruding ribs 262 prevent the insulating block 26 from shifting upwards relative to the grounding terminal 25. Together, they prevent the insulating block 26 from detaching from the inner shielding member, thus preventing changes in the height of the grounding terminal 25 and the signal terminal 24, ensuring stable installation of both within the terminal receiving groove 13, and thereby achieving a reliable electrical connection between the grounding terminal 25 and the signal terminal 24.

[0030] In this embodiment, please refer to Figure 5 and Figure 9The insulating body 1 includes a retaining member 5 fixed between two side walls 11. The retaining member 5 includes a crossbeam 51 extending along the longitudinal direction and multiple protruding ribs 52 extending from both sides of the crossbeam 51. A slot 53 is formed between adjacent protruding ribs 52, and the terminal modules 20 are inserted into and fixed in the slots 53 one by one. The retaining member 5 improves the installation stability of the terminal modules 20 within the insulating body 1. Optimally, as shown in Figure 9, at least some of the protruding ribs 52 are provided with riveting protrusions 54, and the outer shielding plate 4 is provided with riveting holes 44 corresponding to the shape of the riveting protrusions 54. The shape may include, but is not limited to, circles or polygons. The outer shielding plate 4 is riveted to the riveting protrusions 54 through the riveting holes 44. The deformation of the riveting fastens the outer shielding plate 4 and the retaining member 5 together, allowing them to maintain a stable connection for a long period.

[0031] In this embodiment, the reference Figure 3 As shown, the two outer shielding plates 4 are first fixed to both sides of the retaining member 5, and multiple terminal modules are assembled into the slot 53 from bottom to top and fixed, as shown. Figure 4 , 5 As shown. Then, they are inserted into the insulating body from bottom to top. It can be seen that in this embodiment, the signal terminal 24 is a forming terminal or a molded terminal, that is, the terminal 2 is formed by bending after stamping a metal plate; the grounding terminal 25 is a blanking terminal or a blanking terminal, that is, the terminal 2 is formed by cutting and separating a metal plate.

[0032] The electrical connector 10 of the present invention has an inner shielding plate 3 and an outer shielding plate 4 respectively provided on the inner and outer sides of the signal terminal 24 of each terminal module 20. The two together can shield and block the signal terminal 24, reduce signal crosstalk, and improve signal integrity. The grounding terminal 25 and the inner shielding plate 3 are integrated. First, the inner shielding plate 3 realizes the local common ground between the two grounding terminals 25. Then, the outer shielding plate 4 on the outside of the signal terminal 24 connects the grounding terminals 25 in the same row to achieve common grounding. The grounding structure of the electrical connector 10 is simple.

[0033] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of the present invention fall within the scope of the present invention.

Claims

1. An electrical connector, comprising an insulating body, two rows of terminals, a plurality of inner shielding plates, and two outer shielding plates; the insulating body having two opposing sidewalls and a mating groove located between the two sidewalls; The terminal includes a main body, elastic arms extending from the main body, and pins, wherein the elastic arms are provided with contact portions protruding into the mating groove; Each row of terminals includes multiple signal terminal pairs and two ground terminals located on both sides of each signal terminal pair, and each signal terminal pair includes two adjacent signal terminals; Its features are, Each inner shielding plate is integrally connected to the two grounding terminals on both sides of the corresponding signal terminal pair, spanning the corresponding signal terminal pair and located inside the row of terminals; each outer shielding plate is located outside the row of terminals and contacts the grounding terminal.

2. The electrical connector according to claim 1, characterized in that, The outer shielding plate has multiple lower shielding portions, each of which spans two pins of the corresponding signal terminal pair.

3. The electrical connector according to claim 1, characterized in that, The outer shielding plate includes a long strip and a plurality of upper shielding portions extending upward from the long strip. The long strip spans the main body of a row of terminals, and each upper shielding plate spans the elastic arm of a corresponding signal terminal pair.

4. The electrical connector according to claim 3, characterized in that, The outer shielding plate has a plurality of lower shielding portions extending downward from the elongated portion. Each lower shielding portion spans two pins of the corresponding signal terminal pair and abuts against the pins of the grounding terminals on both sides of the corresponding signal terminal pair.

5. The electrical connector according to claim 1, characterized in that, The inner shielding plate is U-shaped and is integrally connected to the main body of the grounding terminal, and spans across the main body of the corresponding signal terminal pair.

6. The electrical connector according to claim 5, characterized in that, The inner shielding sheet extends downward to form an additional shielding portion, and the additional shielding portion extends to the bottom surface of the insulating body.

7. The electrical connector according to claim 1, characterized in that, The main body of each signal terminal pair is fixed to an insulating block, and the main body of the grounding terminal extends into a hook portion. The hook portions of the two grounding terminals engage with two opposite sides of the insulating block, thereby forming a terminal module.

8. The electrical connector according to claim 7, characterized in that, The hook portion of the grounding terminal abuts against the outer shielding plate.

9. The electrical connector according to claim 7, characterized in that, The inner surface of the insulating block is provided with a stop block near its top surface, and the inner shielding plate abuts against the stop block upwards; The insulating block has protruding ribs on both sides, and the hook part is an L-shaped structure with the opening facing upward, which is engaged with the protruding ribs of the insulating block.

10. The electrical connector according to claim 7, characterized in that, The insulating body includes a retainer fixed between the two sidewalls. The retainer includes a crossbeam and a plurality of protruding ribs extending from the crossbeam. A slot is formed between adjacent protruding ribs, and the terminal module is inserted into and fixed in the slot.

11. The electrical connector according to claim 10, characterized in that, At least a portion of the ribs are provided with riveting protrusions; the outer shielding plate is provided with riveting holes, and the outer shielding plate is riveted to the riveting protrusions through the riveting holes.

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