Electric connector

Abstract

The invention relates to the technical field of electronic devices, in particular to an electric connector which comprises an insulating body and a row of first terminals. The insulating body comprises a front end face, a rear end face and a top surface, and the front end face is provided with a butt joint groove penetrating forwards; each first terminal comprises a holding part fixed on the insulating body, an elastic arm and a pin part, and the tail end of the elastic arm is provided with a contact part protruding into the butt joint groove; the row of first terminals are arranged along a first direction and comprise a plurality of grounding terminals and a plurality of signal terminals, at least one signal terminal is arranged between two adjacent grounding terminals, the contact parts of the grounding terminals are located at the same height, and the contact parts of the signal terminals are located at the same height; the contact part of the grounding terminal and the contact part of the signal terminal are located at different heights, and the contact part of the signal terminal protrudes into the butt joint groove more than the contact part of the grounding terminal. According to the electric connector provided by the invention, the contact stability of the signal terminals can be 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 safe grounding. Because the signal terminals carry the effective information flow, they require higher stability in connection. Even minor changes in connection impedance or discontinuities can cause signal attenuation at the signal terminals, affecting the signal transmission process. Existing connector designs often struggle to ensure sufficient stability of the signal terminal connections when dealing with high-frequency, high-speed signal transmission.

[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 contact stability of signal terminals.

[0005] This invention provides a technical solution, which is: an electrical connector, including an insulating body and a row of first terminals; the insulating body includes a front end face, a rear end face, and a top surface, the front end face having a forward-through mating groove; each first terminal includes a retaining portion fixed to the insulating body, an elastic arm, and a contact portion, the end of the elastic arm having a contact portion protruding into the mating groove; the row of first terminals is arranged along a first direction and includes multiple ground terminals and multiple signal terminals, at least one signal terminal is provided between two adjacent ground terminals, the contact portions of the ground terminals are at the same height, the contact portions of the signal terminals are at the same height; the contact portions of the ground terminals and the contact portions of the signal terminals are at different heights, and the contact portion of the signal terminal protrudes further into the mating groove than the contact portion of the ground terminals.

[0006] Compared to the prior art, the contact portion of the signal terminal of the present invention protrudes further into the mating groove than the contact portion of the grounding terminal, resulting in a higher deformation after compression of the signal terminal, continuously applying a greater force to the inserted electronic card, thereby improving the stability of the electrical connection of the signal terminal. Attached Figure Description

[0007] Figure 1 A perspective view of the first embodiment of the electrical connector provided by the present invention.

[0008] Figure 2 for Figure 1 A three-dimensional view of the electrical connector from another angle.

[0009] Figure 3 for Figure 1 Front view of the electrical connector.

[0010] Figure 4 for Figure 1 A side view of the first and second terminals of an electrical connector.

[0011] Figure 5 for Figure 1 Exploded view of an electrical connector.

[0012] Figure 6 for Figure 5 3D exploded view of the four first terminals.

[0013] Figure 7 for Figure 2 A three-dimensional view of the grounding enclosure.

[0014] Figure 8 A perspective view of a second embodiment of the electrical connector provided by the present invention.

[0015] Figure 9 for Figure 8 Exploded view of an electrical connector.

[0016] Figure 10 for Figure 8 A three-dimensional view of the grounding enclosure.

[0017] Figure 11 A perspective view of a third embodiment of the electrical connector provided by the present invention.

[0018] Figure 12 for Figure 11 Exploded view of an electrical connector.

[0019] Figure 13 for Figure 12 A three-dimensional view of the four first terminals.

[0020] Figure 14 for Figure 11 A three-dimensional view of the grounding enclosure.

[0021] Explanation of key component symbols: 10. Electrical connectors; 1. Insulating body; 11. Front end face; 12. Rear end face; 13. Top surface; 14. Connecting groove; 15. Partition plate; 151. First protrusion; 152. Second protrusion; 16. First receiving groove; 17. Side surface; 18. Second receiving groove; 2. First terminal; 21. Holding part; 211. Protrusion; 22. Elastic arm; 221. Contact part; 23. Connecting foot part; 24. Grounding terminal; 241. Shuttle-shaped part; 242. Connecting part; 243. Limiting groove; 244. First limiting part; 245. First contact part; 25. Signal terminal; 251. U-shaped part; 252. Upper horizontal beam; 253. Lower horizontal beam; 254. Vertical beam; 255. Second contact part; 3. Grounding casing; 31. Top plate; 311. First cantilever; 312. First mounting hole; 313. Fastening part; 314. First opening; 315. First mounting part; 32. Rear plate; 321. Second cantilever; 322. Second limiting part; 323. Limiting hole; 324. Second mounting hole; 325. Second opening; 326. Second mounting part; 4. Second terminal; XX, First Direction. Detailed Implementation

[0022] 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.

[0023] To address the issue of insufficient contact stability of signal terminals in traditional electrical connectors, please refer to... Figures 1-14 The present invention provides an electrical connector 10 that can improve the contact stability of the signal terminal 25.

[0024] Please refer to point 1. Figure 2 , Figure 3 and Figure 5 The electrical connector 10 includes an elongated insulating body 1, a row of first terminals 2 arranged at intervals along a first direction XX fixed within the insulating body 1, and a grounding housing 3 covering at least a portion of the insulating body 1. The grounding housing 3 is configured to provide shielding for the first terminals 2 and to provide a common ground path to improve crosstalk issues of the electrical connector 10.

[0025] Please continue to refer to point 1. Figure 2 , Figure 3 and Figure 5 The insulating body 1 includes a front end face 11 and a rear end face 12 disposed opposite to each other, and a top surface 13 disposed between the front end face 11 and the rear end face 12. The front end face 11 of the insulating body 1 is provided with a forward-through docking groove 14 for inserting an electronic card. A row of first receiving grooves 16 is formed in the part of the insulating body 1 near the rear end face 12. The first receiving grooves 16 are connected to the docking grooves 14. The first terminals 2 are fixed to the first receiving grooves 16, and the two are installed in a one-to-one correspondence.

[0026] Please refer to Figure 5 and Figure 6 The first terminal 2 includes a retaining portion 21, an elastic arm 22, and a contact portion 23. The end of the elastic arm 22 has a contact portion 221 that protrudes downwards into the mating groove 14. The retaining portion 21, the elastic arm 22, and the contact portion 23 are an integral structure. The retaining portion 21 is fixed to the first receiving groove 16; the elastic arm 22 is configured to protrude towards the mating groove 14 to achieve elastic contact between the contact portion 221 and the electronic card; the contact portion 23 is configured to extend to the lower end of the electrical connector 10 and is connected to a circuit board by soldering or other methods. Please refer to... Figure 6 The first terminal 2 in a row includes multiple ground terminals 24 and multiple signal terminals 25. At least one signal terminal 25 is provided between two adjacent ground terminals 24. For example, one signal terminal 25 can be provided between two adjacent ground terminals 24, or two signal terminals 25 can be provided between two adjacent ground terminals 24, which can be selected according to the signal transmission requirements of the electrical connector 10. Optionally, a pair of signal terminals 25 is provided between adjacent ground terminals 24 of the present invention. The pair of signal terminals 25 constitutes a differential terminal pair for transmitting differential signals.

[0027] Please continue to refer to Figures 4-6 The contact portion 221 of the grounding terminal 24 is defined as the first contact portion 245, and the contact portion 221 of the signal terminal 25 is defined as the second contact portion 255. When viewed along the first direction XX, the first contact portions 245 are all located at the same height, and the second contact portions 255 are all located at the same height. However, the first contact portions 245 and the second contact portions 255 are located at different heights. The second contact portion 255 of the signal terminal 25 protrudes further into the mating groove 14 than the first contact portion 245 of the grounding terminal 24, so that the signal terminal 25 has a higher deformation after compression, continuously applying a greater force to the inserted electronic card, thereby improving the stability of the electrical connection of the signal terminal 25.

[0028] Please continue to refer to Figure 4 When viewed along the first direction XX, the projection of the signal terminal 25 falls within the projection of the ground terminal 24, meaning that the cross-section of the ground terminal 24 is wider than that of the signal terminal 25. The ground terminal 24 has a better shielding effect, which can effectively improve the signal crosstalk problem of the electrical connector 10.

[0029] Please refer to Figure 4-6The holding portion 21 of the grounding terminal 24 includes two spindle-shaped portions 241 protruding forward from its leading edge and a connecting portion 242 protruding rearward from its trailing edge. The connecting portion 242 is located between the two spindle-shaped portions 241 in the vertical direction. The holding portion 21 of the signal terminal 25 has a U-shaped portion 251 with an opening facing the rear end face 12, so that the holding portion 21 of the signal terminal 25 includes an upper horizontal beam 252, a lower horizontal beam 253, and a vertical beam 254. The vertical beam 254 connects the front ends of the upper horizontal beam 252 and the lower horizontal beam 253. By adopting the above-described structure for the holding portions 21 of the grounding terminal 24 and the signal terminal 25, the cross-sectional area of ​​the signal terminal 25 can be further reduced, thereby further improving the signal crosstalk problem of the electrical connector.

[0030] In some embodiments, please refer to Figure 7 The grounding housing 3 includes a top plate 31 and a rear plate 32. The top plate 31 covers at least part of the top surface 13 of the insulating body 1, and the rear plate 32 covers at least part of the rear end face 12 of the insulating body 1. The grounding terminal 24 abuts against the top plate 31 and / or the rear plate 32 to form a grounding path.

[0031] Specifically, the top plate 31 and the rear plate 32 can be an integral structure or set separately. The integral structure can provide higher overall structural strength, while the separate setting improves the assembly convenience of the grounding housing 3. The setting form of the top plate 31 and the rear plate 32 can be selected according to actual needs.

[0032] Figures 1-7 In the first embodiment of the present invention, the top plate 31 and the rear plate 32 are separately disposed, and both ends of the top plate 31 are bent downward to form fastening portions 313, which fasten to the side surface 17 of the insulating body 1. (See reference...) Figure 5 and Figure 7As shown, the insulating body 1 includes multiple partition plates 15, each partition plate 15 being located between adjacent signal terminals 25. Each partition plate 15 has an upwardly protruding first protrusion 151 and two rearwardly protruding second protrusions 152. The top plate 31 has a first opening 314 corresponding to the area of ​​each partition plate 15, and a first mounting portion 315 is formed between adjacent first openings 314. The first mounting portion 315 has a first mounting hole 312 corresponding to the area of ​​the first protrusion 151. The rear plate 32 has two second openings 325 corresponding to the area of ​​each partition plate 15, and a second mounting portion 326 is formed between adjacent second openings 325. The second mounting portion 326 has a second mounting hole 324 corresponding to the area of ​​the second protrusion 152. When the top plate 31 is installed, the first protrusion 151 is fixed in the first mounting hole 312, and when the rear plate 32 is installed, the second protrusion 152 is fixed in the second mounting hole 324, so that the grounding shell 3 and the insulating body 1 can be fixed by heat fusion. Meanwhile, within the first opening 314, the first cantilever 311, and the holding portion 21 of the grounding terminal 24 corresponding to the area of ​​the first cantilever 311, have an upwardly extending protrusion 211 (see reference). Figure 6 As shown, the first cantilever 311 abuts against the protrusion 211, and the second cantilever 321 is provided in the second opening 325. The second cantilever 321 abuts against the rear edge of the holding part 21 of the grounding terminal 24 to realize the connection between the grounding terminal 24 and the grounding housing 3 and reduce the signal crosstalk of the electrical connector 10.

[0033] Figures 8-10 In the second embodiment of the present invention, unlike the first embodiment, the top plate 31 and the rear plate 32 are integral structures, and the first mounting part 315 and the second mounting part 326 are integrally provided. The first opening 314 of the top plate 31 is connected to the second opening 325 of the rear plate 32. The first cantilever 311 of the top plate 31 and the second cantilever 321 of the rear plate 32 extend close to each other, that is, the first cantilever 311 extends backward and the second cantilever 321 extends upward.

[0034] Figures 11-14 In the third embodiment provided by the present invention, unlike the first embodiment, the grounding terminal 24 is in non-elastic contact with the grounding housing 3. The retaining part 21 of the grounding terminal 24 is provided with a limiting groove 243 and a first limiting part 244 at its rear edge. The rear plate 32 is provided with a second limiting part 322 and a limiting hole 323 in the area corresponding to the limiting groove 243 and the first limiting part 244. When the grounding housing 3 is installed, the second limiting part 322 is embedded in the limiting groove 243, and the first limiting part 244 is engaged in the limiting hole 323.

[0035] Please refer to Figure 5 , Figure 9 and Figure 12The electrical connector 10 also includes a row of second terminals 4 arranged at XX intervals along the first direction. A row of second receiving slots 18 is provided in the part of the insulating body 1 near the front end face 11. The second receiving slots 18 are connected to the docking slots 14. The second terminals 4 are fixed in the second receiving slots 18, and the two are installed in a one-to-one correspondence, so that the electronic card can be connected to the second terminals 4 after being inserted into the docking slots 14.

[0036] 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 and a row of first terminals; the insulating body includes a front end face, a rear end face, and a top surface, the front end face having a forward-through mating groove; each first terminal includes a retaining portion fixed to the insulating body, an elastic arm, and a contact portion, the end of the elastic arm having a contact portion protruding into the mating groove; the row of first terminals is arranged along a first direction and includes a plurality of ground terminals and a plurality of signal terminals, at least one signal terminal is provided between two adjacent ground terminals, the contact portions of the ground terminals are at the same height, and the contact portions of the signal terminals are at the same height; Its features are, The contact portion of the grounding terminal and the contact portion of the signal terminal are located at different heights, and the contact portion of the signal terminal protrudes further into the mating groove than the contact portion of the grounding terminal.

2. The electrical connector according to claim 1, characterized in that, When viewed along the first direction, the projection of the signal terminal falls within the projection of the grounding terminal.

3. The electrical connector according to claim 1, characterized in that, The holding portion of the grounding terminal includes two spindle-shaped portions protruding forward from its front edge and a connecting portion protruding backward from its rear edge, wherein the connecting portion is located between the two spindle-shaped portions in the vertical direction. The holding portion of the signal terminal is provided with a U-shaped portion with an opening facing the rear end face, so that the holding portion of the signal terminal includes an upper horizontal beam, a lower horizontal beam and a vertical beam, and the vertical beam connects the front ends of the upper and lower horizontal beams.

4. The electrical connector according to claim 1, characterized in that, The electrical connector includes a grounding housing, which includes a top plate and a rear plate. The top plate covers at least a portion of the top surface of the insulating body, and the rear plate covers at least a portion of the rear end face of the insulating body. The grounding terminal abuts against the top plate and / or the rear plate to form a grounding path.

5. The electrical connector according to claim 4, characterized in that, The top plate is provided with a first cantilever, and the holding part of the grounding terminal is provided with an upwardly extending protrusion, and the first cantilever abuts against the protrusion.

6. The electrical connector according to claim 5, characterized in that, The rear plate is provided with a second cantilever, which abuts against the rear edge of the holding portion of the grounding terminal.

7. The electrical connector according to claim 4, characterized in that, The holding part of the grounding terminal is provided with a limiting groove and a first limiting part at its rear edge. The rear plate is provided with a second limiting part and a limiting hole. The second limiting part is embedded in the limiting groove, and the first limiting part is engaged in the limiting hole.

8. The electrical connector according to claim 4, characterized in that, The insulating body includes a plurality of partition plates, each partition plate being located between adjacent signal terminals, and the partition plate having an upwardly protruding first protrusion and a rearwardly protruding second protrusion; The top plate has a first mounting hole, and the rear plate has a second mounting hole; The first protrusion is fixed in the first mounting hole, and the second protrusion is fixed in the second mounting hole.

9. The electrical connector according to claim 4, characterized in that, The top plate and the rear plate are either an integral structure or separately configured.

10. The electrical connector according to claim 1, characterized in that, The retaining portion of the first terminal is disposed adjacent to the rear end face, and the contact portion protrudes from top to bottom into the mating groove; The electrical connector includes a row of second terminals, which are disposed adjacent to the front end face and protrude from bottom to top into the mating groove.

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