High-frequency transmission double-layer electric connector

Abstract

The embodiment relates to a high-frequency transmission double-layer electric connector, which comprises a plastic main body, one side of the front part of the plastic main body is provided with an upper layer interface position and a lower layer interface position which are distributed in an upper layer and a lower layer, and the upper layer interface position and the lower layer interface position are respectively provided with an upper layer electric connector and a lower layer electric connector. The upper-layer electric connector comprises an upper-layer terminal group, the upper-layer terminal group comprises a first terminal group and a second terminal group which are distributed in a lower layer and an upper layer, the first terminal group is provided with A1 to A10 PIN terminals, A1, A2, A4 and A5 are upper-row high-speed signal terminals, A3 and A6 are upper-row grounding terminals, and A7 to A10 are upper-row conventional signal terminals; the second terminal group is provided with B1 to B9 PIN terminals in total, B2, B3, B5 and B6 are lower-row high-speed signal terminals, B1 and B4 are lower-row grounding terminals, and B7 to B9 are lower-row conventional signal terminals.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and particularly to a double-layer electrical connector for high-frequency transmission. Background Art

[0002] Connectors are indispensable components in electronic devices and are used to achieve electrical connections between circuits or devices. According to different application scenarios and requirements, connectors can be divided into various types, such as electrical connectors, USB connectors, RJ45 connectors, etc. As described, electrical connectors can be widely used among multiple devices such as televisions, projectors, computers, etc. With the development of connector high-density, multi-layer, and thin-type technologies, when electrical connectors are applied to multi-layer high-density, multi-layer, and thin-type wiring layouts, problems such as signal attenuation and reduced transmission quality occur, reducing the transmission stability and thus affecting normal use. Content of the Utility Model

[0003] To solve the above problems, the utility model provides a double-layer electrical connector for high-frequency transmission.

[0004] To achieve the above object, the technical solution adopted by the utility model is as follows: The utility model relates to a double-layer electrical connector for high-frequency transmission, including a plastic main body. On one side of the front part of the plastic main body, an upper interface position and a lower interface position are provided, which are distributed in two layers, upper and lower. The upper interface position and the lower interface position are respectively provided with an upper electrical connector and a lower electrical connector. The upper electrical connector includes an upper terminal group. The upper terminal group includes a first terminal group and a second terminal group, which are distributed in two layers, upper and lower. The first terminal group has 10 PIN terminals from A1 to A10. Among them, A1, A2, A4, and A5 are upper row high-speed signal terminals, A3 and A6 are upper row ground terminals, and A7 to A10 are upper row conventional signal terminals; the second terminal group has 9 PIN terminals from B1 to B9. Among them, B2, B3, B5, and B6 are lower row high-speed signal terminals, B1 and B4 are lower row ground terminals, and B7 to B9 are lower row conventional signal terminals.

[0005] Preferably, the lower electrical connector includes a third terminal group and a fourth terminal group, which are distributed in two layers, upper and lower. The third terminal group and the fourth terminal group are short PINs, and the first terminal group and the second terminal group are long PINs. Each PIN terminal of the first terminal group and the second terminal group is longer than each PIN terminal of the third terminal group and the fourth terminal group.

[0006] Preferably, each PIN terminal defines a joint portion, an extended welding portion, and a bending portion located between the joint portion and the extended welding portion. Each of the PIN terminals from A1 to A10 includes an upper row joint portion, an upper row bending portion, and an upper row welding portion. The upper row joint portion and the upper row welding portion are bent and connected through the upper row bending portion. Among them, the widths of the upper row joint portions are consistent. The upper row bending portion of the upper row high-speed signal terminals includes an upper row expansion section, an upper row expansion connection section, an upper row widening section, and an upper row direct-lift connection section connected in sequence. The upper row expansion section is connected to the joint portion at an angle. The width of the upper row expansion section is W01, the width of the upper row expansion connection section is W02, the width of the upper row widening section is W03, and the width of the upper row direct-lift connection section is W04. Among them, W03 is greater than W01, W02, and W04.

[0007] Preferably, each PIN terminal defines a joint portion, an extended welding portion, and a bending portion located between the joint portion and the extended welding portion. Each of the PIN terminals from B1 to B9 includes a lower row joint portion, a lower row bending portion, and a lower row welding portion. The lower row joint portion and the lower row welding portion are bent and connected through the lower row bending portion. Among them, the widths of the lower row joint portions are consistent. The lower row bending portion of the lower row high-speed signal terminals includes a lower row expansion section, a lower row expansion connection section, a first lower row widening section, a second lower row widening section, and a lower row direct-lift connection section connected in sequence. The lower row expansion section is connected to the joint portion at an angle. The width of the lower row expansion section is W11, the width of the lower row expansion connection section is W12, the width of the first lower row widening section is W13, the width of the second lower row widening section is W14, and the width of the lower row direct-lift connection section is W15. Among them, W14 is greater than W13 and W15, and W13 is greater than W11 and W12.

[0008] Preferably, the upper-layer electrical connector further includes an upper-layer rubber core structure and an upper-layer housing. The upper-layer rubber core structure includes a split upper row front insulator, an upper row rear insulator, a lower row front insulator, and a lower row rear insulator. The upper row front insulator and the lower row front insulator respectively extend forward to form a tongue plate. The joint portions of the first terminal group and the second terminal group are respectively exposed on the upper end surface and the lower end surface of the tongue plate. The front portions of the bending portions of the first terminal group and the second terminal group are respectively buried in the upper row front insulator and the lower row front insulator. The rear portions of the bending portions of the first terminal group and the second terminal group are buried in the upper row rear insulator and the lower row rear insulator. Moreover, the welding portions of the first terminal group and the second terminal group are arranged in two rows side by side and are respectively distributed on the lower end surfaces of the upper row rear insulator and the lower row rear insulator and are exposed outside the lower end surfaces.

[0009] Preferably, the upper row front insulator and the lower row front insulator are connected by snap fit, and after the upper row front insulator and the lower row front insulator are snap - spliced, they are installed inside the upper layer housing. The upper row rear insulator and the lower row rear insulator are connected by snap fit.

[0010] Preferably, the lower - layer electrical connector further includes a lower - layer rubber core structure and a lower - layer housing. The third terminal group and the fourth terminal group are installed in the lower - layer housing through the lower - layer rubber core structure. The lower - layer rubber core structure extends forward to form a tongue plate. The joint parts of the third terminal group and the fourth terminal group are respectively exposed on the upper end face and the lower end face of the tongue plate. The bent parts of the third terminal group and the fourth terminal group are buried in the lower - layer rubber core structure. The welding parts of the third terminal group and the fourth terminal group are arranged in two rows side by side and are respectively distributed on the lower end face of the lower - layer rubber core structure and are exposed outside the lower end face.

[0011] Preferably, the lower - layer electrical connector further includes a rear plug. The rear plug is provided with a jack. The welding parts of the third terminal group and the fourth terminal group are inserted into the jack, and the rear plug is closely attached to the bottom surface of the lower - layer rubber core structure.

[0012] Preferably, the rear end of the lower - layer housing is provided with an EMI elastic piece formed by extending backward and bending downward from the lower - layer housing. When the upper - layer electrical connector and the lower - layer electrical connector are respectively installed at the upper - layer interface position and the lower - layer interface position of the plastic main body, the EMI elastic piece separates the terminals of the upper - layer electrical connector and the lower - layer electrical connector.

[0013] The beneficial effects of the present utility model are as follows: The present utility model relates to a double - layer electrical connector for high - frequency transmission. In the present utility model, the upper - layer electrical connector 2 and the lower - layer electrical connector 3 can conduct electricity 2.1 and have a transmission speed of 40G, and can be widely applied among multiple devices such as televisions, projectors, and computers. In the present utility model, by improving the structures of the first terminal group and the second terminal group in the upper - layer electrical connector, a widened section is provided on the high - speed signal terminals. Through the widened section, the signal stability and reliability of the high - speed signal terminals are enhanced. At the same time, the signal accuracy and precision are also improved, avoiding the problem that the impedance value increases due to the excessive length of the terminal structure, resulting in a gradual weakening of the signal strength, ensuring the transmission quality, and giving users a better use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0015] Figure 2 is a schematic diagram of the split structure of the present utility model.

[0016] Figure 3 is a schematic diagram of the plastic main body structure of the present utility model.

[0017] Figure 4It is a schematic diagram of the split structure of the upper-layer electrical connector of the present utility model.

[0018] Figure 5 It is a schematic diagram of the split structure of the first terminal group, the third terminal group and the corresponding insulator of the present utility model.

[0019] Figure 6 It is a schematic diagram of the structure of the front insulator in the upper row of the present utility model.

[0020] Figure 7 It is a schematic diagram of the structure of the first terminal group of the present utility model.

[0021] Figure 8 It is a schematic diagram of the structure of the first terminal group of the present utility model from another angle.

[0022] Figure 9 It is a schematic diagram of the structure of the second terminal group of the present utility model.

[0023] Figure 10 It is a schematic diagram of the structure of the second terminal group of the present utility model from another angle.

[0024] Figure 11 It is a schematic diagram of the structure of the first terminal group and the first terminal group of the present utility model.

[0025] Figure 12 It is a schematic diagram of the split structure of the lower-layer electrical connector of the utility model.

[0026] Figure 13 It is a schematic diagram of the structure of the third terminal group and the fourth terminal group of the utility model.

[0027] Figure 14 It is a schematic diagram of the structure of the third terminal group of the utility model.

[0028] Figure 15 It is a schematic diagram of the structure of the fourth terminal group of the utility model.

[0029] Reference numerals

[0030] 1. Plastic body; 11. Upper interface position; 12. Lower interface position; 2. Upper electrical connector; 21. First terminal group; 211. Upper row connection head; 2111. Upper row contact head; 212. Upper row bending part; 2121. Upper row expansion section; 2122. Upper row expansion connection section; 2123. Upper row widening section; 2124. Upper row straight-up position connection section; 213. Upper row welding part; 214. Upper row high-speed signal terminals; 215. Upper row ground terminals; 216. Upper row conventional signal terminals; 22. Second terminal group; 221. Lower row connection head; 2211. Lower row contact head; 222. Lower row bending part; 2221. Lower row expansion section; 2222. Lower row expansion connection section; 2223. First lower row widening section; 2224. Second lower row widening section; 2225. Lower row straight-up position connection section; 223. Lower row welding part; 224. Lower row high-speed signal terminals; 225. Lower row ground terminals; 226. Lower row conventional signal terminals; 23. Upper row front insulator; 231. First buckle groove; 232. Tongue plate; 24. Upper row rear insulator; 241. Second buckle part; 25. Lower row front insulator; 251. First buckle part; 26. Lower row rear insulator; 261. Second buckle groove; 27. Upper shell;

[0031] 3. Lower electrical connector; 31. Third terminal group; 311. Third terminal; 32. Fourth terminal group; 321. Fourth terminal; 33. Lower plastic core structure; 34. Lower shell; 341. EMI spring piece; 35. Rear plug; 351. Jack; 4. Front shielding case; 5. Rear shielding case. Detailed implementation manner

[0032] Please refer to Figure 1-14 As shown in the figure, the present utility model relates to a double-layer electrical connector for high-frequency transmission, including a plastic body 1, an upper electrical connector 2, a lower electrical connector 3, a front shielding case 4, and a rear shielding case 5. The plastic body 1 is provided with an upper interface position 11 and a lower interface position 12. The upper interface position 11 is arranged above the lower interface position 12. The upper electrical connector 2 is installed at the upper interface position 11, the lower electrical connector 3 is installed on the lower interface position 12, the front shielding case 4 and the rear shielding case 5 are respectively sleeved on the plastic body 1. The front shielding case 4 is sleeved on the front end face of the plastic body 1, and the rear shielding case 5 is sleeved on the rear end face of the plastic body 1.

[0033] In the present utility model, the upper-layer electrical connector 2 and the lower-layer electrical connector 3 can conduct electricity 2.1 and have a transmission speed of 40G. The electrical interface is widely used among various devices such as televisions, projectors, audio systems, and computers. It not only supports existing audio and video standards but also has backward compatibility and forward expandability, and can adapt to the development needs of future technologies. In order to ensure the transmission speed and transmission stability of the upper and lower electrical connectors. In this embodiment, the upper-layer electrical connector 2 includes a first terminal group 21 and a second terminal group 22. The first terminal group 21 is disposed above the second terminal group 22. Among them, the first terminal group 21 includes a plurality of upper-layer upper-row terminals, and each of the upper-layer upper-row terminals is arranged parallel to each other. The second terminal group 22 includes a plurality of second terminal combinations, and each of the upper-layer lower-row terminals is arranged parallel to each other. The terminals of the first terminal group 21 and the terminals of the second terminal group 22 are arranged in a staggered manner.

[0034] The following is the structural description of the first terminal group 21 in the present utility model. The first terminal group 21 includes first terminals arranged side by side. Each first terminal includes an upper-row connection head 211, an upper-row bending portion 212, and an upper-row welding portion 213. The upper-row connection head 211 and the upper-row welding portion 213 are bent and connected through the upper-row bending portion 212. An upper-row contact head 2111 protruding toward the second terminal group 22 is provided at the end of the upper-row connection head 211. Among them, the width of the upper-row connection head 211 remains consistent.

[0035] In this embodiment, the first terminals are arranged in the order from left to right as A1 to A10, a total of 10 PIN terminals. Among them, A1, A2, A4, and A5 are upper-row high-speed signal terminals 214. A7 to A10 are upper-row conventional signal terminals 216. A3 and A6 are upper-row ground terminals 215. The width of the upper-row ground terminals 215 is wider than that of the upper-row high-speed signal terminals 214 and the upper-row conventional signal terminals 216, so as to increase the contact area of the upper-row ground terminals 215.

[0036] Furthermore, in the first terminal group 21, an upper-row expansion section 2121 is provided at one end of the upper-row bending portion 212 connected to the upper-row connection head 211. The upper-row expansion sections 2121 are all arranged in a fan shape. The upper-row connection head 211 and the upper-row expansion section 2121 are located in the same plane and the connection angle between the two is an obtuse angle α1.

[0037] Further, in this embodiment, the upper row bending portions 212 of the A1, A2, A4, and A5 (upper row high-speed signal terminals 214) further include an upper row expansion connection section 2122, an upper row widening section 2123, and an upper row direct elevation connection section 2124. Among them, the upper row expansion section 2121, the upper row expansion connection section 2122, the upper row widening section 2123, and the upper row direct elevation connection section 2124 are connected in sequence.

[0038] In this embodiment, the width of the upper row expansion section 2121 is W01, the width of the upper row expansion connection section 2122 is W02, the width of the upper row widening section 2123 is W03, and the width of the upper row direct elevation connection section 2124 is W04. Among them, W03 is greater than W01, W02, and W04.

[0039] The following is a structural description of the second terminal group 22 in the present utility model. The second terminal group 22 includes second terminals arranged side by side. Each second terminal includes a lower row connection head 221, a lower row bending portion 222, and a lower row welding portion 223. The lower row connection head 221 and the lower row welding portion 223 are bent and connected through the lower row bending portion 222. A lower row contact head 2211 protruding towards the first terminal group 21 is provided at the end of the lower row connection head 221. The upper row contact head 2111 and the lower row contact head 2211 are arranged in a front-back staggered manner. Among them, the widths of the lower row connection heads 221 are kept consistent.

[0040] In this embodiment, the second terminals are arranged in the order from left to right as B1 to B9, a total of 9 PIN terminals. Among them, B2, B3, B5, and B6 are lower row high-speed signal terminals 224. B8 and B9 are lower row conventional signal terminals 226. B1, B4, and B7 are lower row ground terminals 225. The widths of the lower row ground terminals 225 are wider than those of the lower row high-speed signal terminals 224 and the lower row conventional signal terminals 226, thereby increasing the contact area.

[0041] Further, in the second terminal group 22, a lower row expansion section 2221 is provided at one end of the lower row bending portion 222 connected to the lower row connection head 221. The lower row expansion sections 2221 are all arranged in a fan shape. The lower row connection head 221 and the lower row expansion section 2221 are located in the same plane, and the connection angle between the two is an obtuse angle α2.

[0042] Further, in this embodiment, the lower row bending portions 222 of the B2, B3, B5, and B6 (lower row high-speed signal terminals 224) further include a lower row expansion connection section 2222, a first lower row widening section 2223, a second lower row widening section 2224, and a lower row straight-up connection section 2225. Among them, the lower row expansion section 2221, the lower row expansion connection section 2222, the first lower row widening section 2223, the second lower row widening section 2224, and the lower row straight-up connection section 2225 are connected in sequence.

[0043] In this embodiment, the width of the lower row expansion section 2221 is W11, the width of the lower row expansion connection section 2222 is W12, the width of the first lower row widening section 2223 is W13, the second lower row widening section 2224 is W14, and the width of the lower row straight-up connection section 2225 is W15. Among them, W14 is greater than W13 and W15, and W13 is greater than W11 and W12.

[0044] In the present utility model, the first terminal group 21 is further provided with an upper row front insulator 23 and an upper row rear insulator 24. The upper row front insulator 23 is connected to the tongue plate 232. The upper row connection head 211 and the upper row expansion section 2121 and the upper row expansion connection section 2122 of the upper row bending portion 212 are buried in the upper row front insulator 23, and the upper row straight-up connection section 2124 is buried in the upper row rear insulator 24; the second terminal group 22 is provided with a lower row front insulator 25 and a lower row rear insulator 26. The lower row expansion section 2221 and the lower row expansion connection section 2222 of the lower row bending portion 222 are buried in the lower row front insulator 25, and the lower row straight-up connection section 2225 is buried in the lower row rear insulator 26.

[0045] Further, the upper row front insulator 23 is provided with a first buckle groove 231, and the lower row front insulator 25 is provided with a first buckle member 251 that matches the first buckle groove 231. The first buckle member 251 and the first buckle groove 231 are cooperatively connected to install the upper row front insulator 23 on the lower row front insulator 25.

[0046] The upper row rear insulator 24 is provided with a second buckle member 241, and the lower row rear insulator 26 is provided with a second buckle groove 261. The second buckle member 241 and the second buckle groove 261 are cooperatively connected to splice and fix the first terminal group 21 and the second terminal group 22.

[0047] Furthermore, the upper layer electrical connector 2 is further provided with an upper layer housing 27. After the upper row front insulator 23 and the lower row front insulator 25 are spliced and fixed, they are installed inside the upper layer housing 27.

[0048] In the present utility model, the structure of the lower-layer electrical connector 3 is basically the same as that of the upper-layer electrical connector 2. The lower-layer electrical connector 3 includes a third terminal group 31, a fourth terminal group 32, a lower-layer rubber core structure 33, and a lower-layer outer shell 34. The third terminal group 31 is disposed above the fourth terminal group 32. The third terminal group 31 and the fourth terminal group 32 are partially buried in the lower-layer rubber core structure 33. The third terminal group 31 and the fourth terminal group 32 are installed in the lower-layer outer shell 34 through the lower-layer rubber core structure 33.

[0049] In this embodiment, the third terminal group 31 includes a plurality of third terminals 311, and each of the third terminals 311 is arranged parallel to each other. The fourth terminal group 32 includes a plurality of fourth terminals 321, and each of the fourth terminals 321 is arranged parallel to each other. Among them, the fourth terminals 321 of the third terminal group 31 and the fourth terminals 321 of the fourth terminal group 32 are arranged in a staggered manner.

[0050] The terminal structures of the third terminal group 31, the fourth terminal group 32, the first terminal group 21, and the second terminal group 22 are substantially the same. However, since the upper-layer electrical connector 2 is installed at the upper-layer interface position 11 and the lower-layer electrical connector 3 is installed at the lower-layer interface position 12, the terminal structures required for the first terminal group 21 and the second terminal group 22 are longer than those of the third terminal group 31 and the fourth terminal group 32. Due to the shorter terminal structures of the third terminal group 31 and the fourth terminal group 32, there is no widened section provided in the fourth terminals 321, and the widths of each of the fourth terminals 321 are not significantly thick or thin, thereby ensuring the stability of the lower-layer electrical connector 3.

[0051] In this embodiment, an EMI elastic sheet 341 is provided at the rear end of the lower-layer outer shell 34. The EMI elastic sheet 341 is integrally formed with the lower-layer outer shell 34. When the upper-layer electrical connector 2 and the lower-layer electrical connector 3 are respectively installed at the upper-layer interface position 11 and the lower-layer interface position 12 of the plastic main body 1, the EMI elastic sheet 341 separates the terminals of the upper-layer electrical connector 2 and the lower-layer electrical connector 3, thereby avoiding the signal crosstalk interference problem caused by the terminals of the upper-layer electrical connector 2 and the lower-layer electrical connector 3 being too close to each other.

[0052] In this embodiment, a rear plug 35 is further provided at the welding parts of the third terminal group 31 and the fourth terminal group 32. The rear plug 35 is provided with insertion holes 351 that match the welding parts of the third terminal group 31 and the fourth terminal group 32. The welding parts of the third terminal group 31 and the fourth terminal group 32 are exposed outside the rear plug 35 through the insertion holes 351.

[0053] The utility model relates to a double-layer electrical connector for high-frequency transmission. In the utility model, the upper-layer electrical connector 2 and the lower-layer electrical connector 3 can conduct electricity 2.1, have a transmission speed of 40G, and can be widely applied among multiple devices such as televisions, projectors, computers, etc. In the utility model, by improving the structures of the first terminal group 21 and the second terminal group 22 in the upper-layer electrical connector 2, a widened section is arranged on the high-speed signal terminal. Through the widened section, the signal stability and reliability of the high-speed signal terminal are enhanced, the 40G transmission speed is achieved, the precision and accuracy of the signal are improved at the same time, and the problem that the signal strength is gradually weakened due to the increase of the impedance value caused by the overlong terminal structure is avoided, ensuring the transmission quality and giving users a better use experience.

[0054] The above embodiments are only used to describe the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary engineering and technical personnel in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A double-layer electrical connector for high-frequency transmission, comprising a plastic body. One side of the front part of the plastic body is provided with an upper-layer interface position and a lower-layer interface position which are distributed in two layers, upper and lower. The upper-layer interface position and the lower-layer interface position are respectively provided with an upper-layer electrical connector and a lower-layer electrical connector, and it is characterized in that: The upper electrical connector includes an upper terminal group, and the upper terminal group includes a first terminal group and a second terminal group which are distributed in two layers, upper and lower. The first terminal group has 10 PIN terminals from A1 to A10. Among them, A1, A2, A4, and A5 are upper-row high-speed signal terminals, A3 and A6 are upper-row ground terminals, and A7 to A10 are upper-row conventional signal terminals; the second terminal group has 9 PIN terminals from B1 to B9. Among them, B2, B3, B5, and B6 are lower-row high-speed signal terminals, B1 and B4 are lower-row ground terminals, and B7 to B9 are lower-row conventional signal terminals.

2. The double-layer electrical connector for high-frequency transmission according to claim 1, wherein: The lower electrical connector includes a third terminal group and a fourth terminal group which are distributed in two layers, upper and lower. The third terminal group and the fourth terminal group are short PINs, and the first terminal group and the second terminal group are long PINs. Each PIN terminal of the first terminal group and the second terminal group is longer than each PIN terminal of the third terminal group and the fourth terminal group.

3. The double-layer electrical connector for high-frequency transmission according to claim 1, characterized in that: Each PIN terminal defines a joint portion, an extended welding portion, and a bent portion located between the joint portion and the extended welding portion. Each PIN terminal of A1 to A10 includes an upper-row joint portion, an upper-row bent portion, and an upper-row welding portion. The upper-row joint portion and the upper-row welding portion are bent and connected through the upper-row bent portion. Among them, the width of the upper-row joint portion remains the same. The upper-row bent portion of the upper-row high-speed signal terminal includes an upper-row expansion section, an upper-row expansion connection section, an upper-row widening section, and an upper-row straight-up position connection section that are connected in sequence. The upper-row expansion section is connected to the joint portion at an angle. The width of the upper-row expansion section is W01, the width of the upper-row expansion connection section is W02, the width of the upper-row widening section is W03, and the width of the upper-row straight-up position connection section is W04. Among them, W03 is greater than W01, W02, and W04.

4. A double-layer electrical connector for high-frequency transmission according to claim 1, characterized in that: Each PIN terminal defines a joint portion, an extended welding portion, and a bent portion located between the joint portion and the extended welding portion. Each PIN terminal of B1 to B9 includes a lower-row joint portion, a lower-row bent portion, and a lower-row welding portion. The lower-row joint portion and the lower-row welding portion are bent and connected through the lower-row bent portion. Among them, the width of the lower-row joint portion remains the same. The lower-row bent portion of the lower-row high-speed signal terminal includes a lower-row expansion section, a lower-row expansion connection section, a first lower-row widening section, a second lower-row widening section, and a lower-row straight-up position connection section that are connected in sequence. The lower-row expansion section is connected to the joint portion at an angle. The width of the lower-row expansion section is W11, the width of the lower-row expansion connection section is W12, the width of the first lower-row widening section is W13, the width of the second lower-row widening section is W14, and the width of the lower-row straight-up position connection section is W15. Among them, W14 is greater than W13 and W15, and W13 is greater than W11 and W12.

5. A double-layer electrical connector for high-frequency transmission according to claim 1, characterized in that: The upper electrical connector further includes an upper rubber core structure and an upper housing. The upper rubber core structure includes a split upper row front insulator, an upper row rear insulator, a lower row front insulator, and a lower row rear insulator. The upper row front insulator and the lower row front insulator respectively extend forward to form a tongue plate. The joint parts of the first terminal group and the second terminal group are respectively exposed on the upper end surface and the lower end surface of the tongue plate. The front parts of the bent portions of the first terminal group and the second terminal group are respectively embedded in the upper row front insulator and the lower row front insulator, and the rear parts of the bent portions of the first terminal group and the second terminal group are embedded in the upper row rear insulator and the lower row rear insulator. Moreover, the welding parts of the first terminal group and the second terminal group are arranged in two rows side by side and are respectively distributed on the lower end surface of the upper row rear insulator and the lower row rear insulator and are exposed outside the lower end surface.

6. The double-layer electrical connector for high-frequency transmission according to claim 5, characterized in that: The upper row front insulator and the lower row front insulator are connected by snap-fit, and after being snap-fitted and spliced, they are installed inside the upper housing. The upper row rear insulator and the lower row rear insulator are connected by snap-fit.

7. A double-layer electrical connector for high-frequency transmission according to claim 2, characterized in that: The lower electrical connector further includes a lower rubber core structure and a lower housing. The third terminal group and the fourth terminal group are installed in the lower housing through the lower rubber core structure. The lower rubber core structure extends forward to form a tongue plate. The joint parts of the third terminal group and the fourth terminal group are respectively exposed on the upper end surface and the lower end surface of the tongue plate. The bent portions of the third terminal group and the fourth terminal group are embedded in the lower rubber core structure. The welding parts of the third terminal group and the fourth terminal group are arranged in two rows side by side and are respectively distributed on the lower end surface of the lower rubber core structure and are exposed outside the lower end surface.

8. The double-layer electrical connector for high-frequency transmission according to claim 7, characterized in that: The lower electrical connector further includes a rear plug. The rear plug is provided with a jack. The welding parts of the third terminal group and the fourth terminal group are inserted into the jack, and the rear plug is closely attached to the bottom surface of the lower rubber core structure.

9. A double-layer electrical connector for high-frequency transmission according to claim 7, characterized in that: The rear end of the lower housing is provided with an EMI elastic sheet formed by extending backward and then bending downward from the lower housing.

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