Wire-to-board connector

Abstract

The embodiment of the invention discloses a wire-to-board connector. The wire-to-board connector comprises a first terminal module, a second terminal module, a plurality of first cables and a plurality of second cables, the first terminal module comprises a plurality of first signal terminals, a plurality of first grounding terminals and a first grounding piece, the plurality of first grounding terminals are connected with the first grounding piece, the second terminal module comprises a plurality of second signal terminals, a plurality of second grounding terminals and a second grounding piece, the plurality of second grounding terminals are connected with the second grounding piece, and the second signal terminals are connected with the second grounding piece. The first cable comprises a first core body, a first insulating layer and a first shielding layer. The first shielding layer is connected with the first grounding piece and the second grounding piece. According to the invention, the first shielding layer is connected with the first grounding sheet and the second grounding sheet, so that a double-point grounding structure can be formed, the electromagnetic shielding effect is remarkably improved, and crosstalk and noise in signal transmission are effectively suppressed.

Description

TECHNICAL FIELD

[0001] The application relates to a wire-to-board connector and belongs to the technical field of connectors. BACKGROUND

[0002] The wire-to-board connector in the prior art comprises an insulating body, signal terminals, ground terminals and cables. The cables comprise wires connected to the signal terminals. However, as the electronic devices have higher requirements for data transmission, how to improve the anti-interference performance in the data transmission process is a technical problem to be solved by those skilled in the art. SUMMARY

[0003] An embodiment of the application aims to provide a wire-to-board connector with good electromagnetic shielding effect.

[0004] In the embodiments of the application,

[0005] A wire-to-board connector comprises: a first terminal module, the first terminal module comprising a plurality of first signal terminals, a plurality of first ground terminals and a first ground sheet, each two of the first signal terminals forming a first differential pair, each of the first differential pair being provided with one of the first ground terminals on the adjacent sides, and the plurality of first ground terminals being connected to the first ground sheet; a second terminal module, the second terminal module comprising a plurality of second signal terminals, a plurality of second ground terminals and a second ground sheet, each two of the second signal terminals forming a second differential pair, each of the second differential pair being provided with one of the second ground terminals on the adjacent sides, and the plurality of second ground terminals being connected to the second ground sheet; a plurality of first cables, each of the first cables comprising a first core, a first insulating layer wrapped outside the first core and a first shielding layer wrapped outside the first insulating layer, the first core being connected to the first signal terminals, and the first shielding layer being connected to the first ground sheet and the second ground sheet; and a plurality of second cables, each of the second cables comprising a second core, a second insulating layer wrapped outside the second core and a second shielding layer wrapped outside the second insulating layer, the second core being connected to the second signal terminals, and the second shielding layer being connected to the second ground sheet.

[0006] As a further improved technical solution of the embodiments of the application, the first differential pairs and the first ground terminals are arranged alternately along the first direction, the second differential pairs and the second ground terminals are arranged alternately along the first direction, the plurality of first ground terminals are integrally formed with the first ground sheet, the plurality of second ground terminals are integrally formed with the second ground sheet, and the first ground sheet and the second ground sheet are arranged along a second direction perpendicular to the first direction.

[0007] As a further improved technical solution of the embodiment of the present application, the first ground sheet comprises a first surface, the second ground sheet comprises a second surface, the first cable is located on the same side of the first surface and the second surface, and the first surface is flush with the second surface.

[0008] As a further improved technical solution of the embodiment of the present application, the first shielding layer is welded and fixed with the first surface and the second surface at the same time.

[0009] As a further improved technical solution of the embodiment of the present application, the wire-to-board connector comprises a grounding piece, the grounding piece is welded and fixed with the first surface, the grounding piece comprises a third surface, and the first shielding layer is welded and fixed with the third surface and the second surface at the same time.

[0010] As a further improved technical solution of the embodiment of the present application, the first cable comprises a first insulating skin sleeved outside the first shielding layer, two parts of the first insulating skin are stripped to expose the first segment and the second segment of the first shielding layer outside the first insulating skin, the first segment is connected with the first shielding sheet, and the second segment is connected with the second shielding sheet.

[0011] As a further improved technical solution of the embodiment of the present application, the first terminal module comprises a first insulating block, the first signal terminals and the first ground terminals are arranged in the first insulating block, the first surface is exposed outside the first insulating block, the second terminal module comprises a second insulating block, the second signal terminals and the second ground terminals are arranged in the second insulating block, and the second surface is exposed outside the second insulating block.

[0012] As a further improved technical solution of the embodiment of the present application, the wire-to-board connector comprises an insulating body, the insulating body comprises a first accommodating opening, a second accommodating opening, and a partition wall located between the first accommodating opening and the second accommodating opening in the second direction, the first insulating block is at least partially installed in the first accommodating opening, the second insulating block is at least partially installed in the second accommodating opening, and the partition wall is provided with a cable positioning groove for positioning the first cable.

[0013] As a further improved technical solution of the embodiments of this application, the wire-to-board connector further includes an outer metal housing installed outside the insulating body. The first grounding piece is provided with a first grounding portion, the insulating body is provided with a first slot, the first grounding portion is exposed to the insulating body from the first slot, the second grounding piece is provided with a second grounding portion, the insulating body is provided with a second slot, the second grounding portion is exposed to the insulating body from the second slot, and both the first grounding portion and the second grounding portion are in contact with the outer metal housing.

[0014] As a further improved technical solution of the embodiments of this application, the wire-to-board connector includes a shield, the shield includes a shielding part, the first grounding terminal includes a first main body part and a first mating part connected to the first main body part, the first main body part is connected to the first grounding piece, and the shielding part is connected to the first main body part.

[0015] The wire-to-board connector provided in this application includes a first terminal module, a second terminal module, a plurality of first cables, and a plurality of second cables. The first terminal module includes a plurality of first signal terminals, a plurality of first ground terminals, and a first ground plate. The plurality of first ground terminals are connected to the first ground plate. The second terminal module includes a plurality of second signal terminals, a plurality of second ground terminals, and a second ground plate. The plurality of second ground terminals are connected to the second ground plate. The first shielding layer is connected to both the first ground plate and the second ground plate, thereby forming a dual-point grounding structure, which significantly improves the electromagnetic shielding effect and effectively suppresses crosstalk and noise in signal transmission. Attached Figure Description

[0016] Figure 1 This is a perspective view of a wire-to-board connector assembly according to an embodiment of this application; Figure 2 yes Figure 1 An exploded view of the wire-to-board connector assembly shown. Figure 3 yes Figure 1 A three-dimensional schematic diagram of the wire-to-board connector assembly from another angle; Figure 4 yes Figure 3 An exploded view of the wire-to-board connector assembly shown. Figure 5 yes Figure 2 A three-dimensional schematic diagram of the middle section structure; Figure 6 yes Figure 5 A schematic diagram of the decomposition process; Figure 7 yes Figure 6 Enlarged view of region A in the middle; Figure 8 yes Figure 6 A three-dimensional schematic diagram of the middle section structure; Figure 9 is Figure 8 a zoomed-in view of the B region in FIG. 1; Figure 10 is Figure 8 a zoomed-in view of the B region in FIG. 1; Figure 11 is Figure 6 a zoomed-in view of the B region in FIG. 1; Figure 12 is Figure 11 a zoomed-in view of the B region in FIG. 1; Figure 13 is Figure 12 a zoomed-in view of the B region in FIG. 1; Figure 14 is Figure 12 a zoomed-in view of the B region in FIG. 1;

[0017] Those skilled in the art will appreciate that the specification herein provided is for the purpose of illustration only and that the specification herein presented is to scale only for the illustrated embodiments, other embodiments not necessarily being to scale. DETAILED DESCRIPTION

[0018] The exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. If there are several embodiments, the features in these embodiments can be combined with each other when there is no conflict. When the description refers to the accompanying drawings, the same numbers in different drawings represent the same or similar elements unless otherwise specified. The description in the following exemplary embodiments does not represent all embodiments consistent with the present application; rather, they are merely examples of devices, products and / or methods consistent with some aspects of the present application as recited in the claims of the present application.

[0019] The terms used in the present application are merely for the purpose of describing the specific embodiments and are not intended to limit the scope of protection of the present application. The singular forms "a," "an," and "the" used in the specification and claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0020] It should be understood that the use of terms such as "first" or "second", etc. in the description and in the claims of the present application do not denote any order, number or importance, but are only used to distinguish the features. Similarly, the use of terms such as "one" or "a" or the like do not denote a quantity limitation, but denote the presence of at least one. Unless otherwise indicated, the use of terms such as "front", "back", "up", "down", etc. in the present application is only for the convenience of description and is not limited to a certain position or spatial orientation. The use of terms such as "include" or "contain" or the like is an open-ended expression, which means that the elements appearing before "include" or "contain" cover the elements appearing after "include" or "contain" and their equivalents, which does not exclude that the elements appearing before "include" or "contain" can also include other elements. If "several" appears in the present application, it means two and more than two.

[0021] Referring to Figures 1 to 14 The embodiments of the present application disclose a wire-to-board connector assembly, which comprises a circuit board 200, a wire-to-board connector 100 mounted on the circuit board 200, and a fastening assembly 300 for fixing the wire-to-board connector 100 to the circuit board 200.

[0022] In some embodiments, referring to Figure 2 and Figure 4 The circuit board 200 comprises an upper surface 201, a lower surface 202, a plurality of metal conductive pads 203 exposed to the upper surface 201, a plurality of metal ground pads 204 exposed to the upper surface 201, a plurality of mounting holes 205 penetrating through the upper surface 201 and the lower surface 202, and a plurality of positioning holes 206 penetrating through the upper surface 201 and the lower surface 202. The plurality of metal conductive pads 203 comprises a plurality of first metal conductive pads 2031 in a first row and a plurality of second metal conductive pads 2032 in a second row, the plurality of first metal conductive pads 2031 and the plurality of second metal conductive pads 2032 being arranged in two mutually parallel rows. The plurality of metal ground pads 204 comprises a plurality of first metal ground pads 2041 in a first row and a plurality of second metal ground pads 2042 in a second row, the pairs of first metal ground pads 2041 and the pairs of first metal conductive pads 2031 being alternately arranged, and the pairs of second metal ground pads 2042 and the pairs of second metal conductive pads 2032 being alternately arranged.

[0023] In some embodiments, referring to Figure 2 The fastening assembly 300 comprises a bolt 301, a bottom plate 302, and a protruding ring 303 provided on the bottom plate 302, the protruding ring 303 being internally threaded, and the bolt 301 penetrating through the mounting hole 205 and being fixed with the internal thread of the protruding ring 303.

[0024] Referring to Figure 2As shown, the wire-to-board connector 100 includes an insulating body 1, a first terminal module 2, a second terminal module 3, a plurality of first cables 4, a plurality of second cables 5, and an outer metal shell 7. The outer metal shell 7 is mounted on the insulating body 1.

[0025] As shown in Figure 2 , Figure 4 and Figure 6 As shown, the insulating body 1 includes a fourth surface 16, a fifth surface 17, a plurality of mounting holes 18, a plurality of positioning posts 19, a first opening 11 extending through the fifth surface 17 and the fourth surface 16, a second opening 12 extending through the fifth surface 17 and the fourth surface 16, and a partition wall 13 located between the first opening 11 and the second opening 12 in a second direction A2-A2 (e.g., front-rear direction). When the wire-to-board connector 100 is assembled, the mounting holes 18 are aligned with the mounting holes 205 for the fastening assembly 300 to pass through. The positioning posts 19 are used to be inserted into the positioning holes 206 to position the wire-to-board connector 100 on the circuit board 200. In some embodiments, as shown in Figure 4 The first terminal module 2 is mounted in the first opening 11 from the fourth surface 16, and the second terminal module 3 is mounted in the second opening 12 from the fourth surface 16. The partition wall 13 is provided with a plurality of cable positioning grooves 130 for positioning the plurality of first cables 4.

[0026] As shown in Figure 6 The first terminal module 2 includes a first insulating block 24, a plurality of first signal terminals S1, a plurality of first ground terminals G1, and a first ground sheet 23. In some embodiments, the plurality of first signal terminals S1 and the plurality of first ground terminals G1 are insert-molded in the first insulating block 24, and the first insulating block 24 is at least partially mounted in the first opening 11. Of course, those skilled in the art can understand that the plurality of first signal terminals S1 and the plurality of first ground terminals G1 can also be fixed to the first insulating block 24 by other means (e.g., assembled means).

[0027] As shown in Figure 6 Each two first signal terminals S1 form a first differential pair DP1, and the two sides of the first differential pair DP1 are respectively provided with one first ground terminal G1. The plurality of first ground terminals G1 are connected to the first ground sheet 23 to increase the ground area. In some embodiments, the first differential pair DP1 and the first ground terminal G1 are alternately arranged in a first direction A1-A1 (e.g., left-right direction). As shown in Figure 7As shown, the first signal terminal S1 includes a first cable connecting portion 211 and a second mating portion 212. The first cable connecting portion 211 includes a third face 2111 which is at least partially exposed outside the first insulating block 24, and the second mating portion 212 extends out of the first insulating block 24 in a cantilevered manner. The first ground terminal G1 includes a first body portion 221 and a first mating portion 222 connected to the first body portion 221. The first body portion 221 is connected to the first ground sheet 23. The first body portion 221 includes a second face 2211 which is at least partially exposed outside the first insulating block 24, and the first mating portion 222 extends out of the first insulating block 24 in a cantilevered manner. The first mating portion 222 is connected to the first metal ground sheet 2041, and the second mating portion 212 is connected to the first metal conductive sheet 2031.

[0028] In some embodiments, the third face 2111 is flush with the second face 2211. By "flush", it is meant that the third face 2111 and the second face 2211 are at the same height, but slight height adjustment is allowed, for example due to manufacturing process tolerance, as long as the tolerance is within a reasonable range.

[0029] Please refer to Figure 10 As shown, the first mating portion 222 includes two first elastic mating portions 2221 which are bifurcated. The sum of the widths of the two first elastic mating portions 2221 is not less than the width of the second mating portion 212 of the first signal terminal S1, so as to provide better shielding effect.

[0030] Please refer to Figure 6 As shown, the second terminal module 3 includes a second insulating block 34, a plurality of second signal terminals S2, a plurality of second ground terminals G2 and a second ground sheet 33. In some embodiments, the plurality of second signal terminals S2 and the plurality of second ground terminals G2 are embedded in the second insulating block 34, and the second insulating block 34 is at least partially installed in the second opening 12. Of course, those skilled in the art can understand that the plurality of second signal terminals S2 and the plurality of second ground terminals G2 can also be fixed to the second insulating block 34 by other means, for example, assembled means.

[0031] Please refer to Figure 6 As shown, each two second signal terminals S2 form a second differential pair DP2, and one second ground terminal G2 is arranged on each side of the second differential pair DP2, and the plurality of second ground terminals G2 are connected to the second ground sheet 33 to increase the ground area. In some embodiments, the second differential pair DP2 and the second ground terminal G2 are arranged alternately along the first direction A1-A1. Please refer to Figure 7As shown, the second signal terminal S2 includes a second cable connecting portion 311 and a fourth mating portion 312. The second cable connecting portion 311 includes a fifth surface 3111 which is at least partially exposed outside the second insulating block 34, and the fourth mating portion 312 extends out of the second insulating block 34 in a cantilevered manner. The second ground terminal G2 includes a second body portion 321 and a third mating portion 322 connected to the second body portion 321. The second body portion 321 includes a fourth surface 3211 which is at least partially exposed outside the second insulating block 34, and the third mating portion 322 extends out of the second insulating block 34 in a cantilevered manner. The third mating portion 322 is connected to the second metal ground sheet 2042, and the fourth mating portion 312 is connected to the second metal conductive sheet 2032.

[0032] In some embodiments, the fifth surface 3111 is flush with the fourth surface 3211. By "flush", it is meant that the fifth surface 3111 and the fourth surface 3211 are at the same height, but slight height adjustment is allowed, for example due to manufacturing process tolerance, as long as the tolerance is within a reasonable range.

[0033] Please refer to Figure 10 As shown, the third mating portion 322 includes two second elastic mating portions 3221 which are bifurcated. The sum of the widths of the two second elastic mating portions 3221 is not less than the width of the fourth mating portion 312 of the second signal terminal S2, so as to provide better shielding effect.

[0034] In some embodiments, the first signal terminal S1 and the second ground terminal G2 are arranged along a second direction A2-A2 (for example, front-rear direction) which is perpendicular to the first direction A1-A1, the second signal terminal S2 and the first ground terminal G1 are arranged along the second direction A2-A2, and the first ground sheet 23 and the second ground sheet 33 are arranged along the second direction A2-A2.

[0035] In some embodiments, the first ground terminal G1 and the first ground sheet 23 are integrally formed (for example, stamped). Please refer to Figure 8 As shown, the first ground sheet 23 includes a first body 231 and two first ground portions 232 connected to both ends of the first body 231. Correspondingly, the insulating body 1 is provided with a first slot 14, and the first ground portions 232 are exposed to the insulating body 1 from the first slot 14. The first slot 14 is a through hole which penetrates the fourth surface 16 and the fifth surface 17. In some embodiments, the through hole is rectangular in shape; of course, in other embodiments, the through hole can also be other shapes, which will not be described in detail herein. The first ground portions 232 are exposed to the fifth surface 17 of the insulating body 1 from the first slot 14, so as to be in contact with the outer metal shell 7.

[0036] In some embodiments, the second grounding terminals G2 are integrally formed (e.g., stamped) with the second grounding tabs 33. Please refer to Figure 8 and Figure 10 As shown, the second grounding tabs 33 include a second body 331 and two second grounding portions 332 connected to both ends of the second body 331. Correspondingly, the insulating body 1 is provided with second notches 15, and the second grounding portions 332 are exposed to the insulating body 1 from the second notches 15. The second notches 15 are perforations that pass through the fourth surface 16 and the fifth surface 17. In some embodiments, the perforations are rectangular in shape; of course, in other embodiments, the perforations can be other shapes, which will not be described in detail herein. The second grounding portions 332 are exposed to the fifth surface 17 of the insulating body 1 from the second notches 15 to contact the outer metal shell 7.

[0037] In some embodiments, as shown in Figure 10 , the first body 231 includes a first surface 2311, and the second body 331 includes a second surface 3311. The first cables 4 are located on the same side of the first surface 2311 and the second surface 3311, where the first surface 2311 and the second surface 3311 are flush, meaning that the first surface 2311 and the second surface 3311 are at the same height, but a slight height adjustment is allowed, such as a tolerance caused by the manufacturing process, as long as the tolerance is within a reasonable range. The first surface 2311 is exposed to the outside of the first insulating block 24, and the second surface 3311 is exposed to the outside of the second insulating block 34.

[0038] As shown in Figure 7 , each of the first cables 4 is a coaxial cable, which includes a first core 41, a first insulating layer 42 wrapped outside the first core 41, a first shielding layer 43 wrapped outside the first insulating layer 42, and a first insulating skin 44 wrapped outside the first shielding layer 43. The first core 41 is connected to the first cable connecting portion 211 of the first signal terminal S1. In some embodiments, the first shielding layer 43 is connected to both the first body 231 of the first grounding tab 23 and the second body 331 of the second grounding tab 33, thereby forming a double-point grounding structure, which significantly improves the electromagnetic shielding effect and effectively suppresses crosstalk and noise in signal transmission.

[0039] As shown in Figure 7 , each of the second cables 5 is a coaxial cable, which includes a second core 51, a second insulating layer 52 wrapped outside the second core 51, a second shielding layer 53 wrapped outside the second insulating layer 52, and a second insulating skin 54 wrapped outside the second shielding layer 53. The second core 51 is connected to the second cable connecting portion 311 of the second signal terminal S2, and the second shielding layer 53 is connected to the second body 331 of the second grounding tab 33.

[0040] In some implementation methods, please refer to Figure 8 As shown, the wire-to-board connector includes a grounding component 6, which is soldered to the first surface 2311, for example, by soldering. Please refer to... Figure 10 As shown, the grounding component 6 includes a third surface 61, and the first shielding layer 43 is simultaneously welded and fixed to the third surface 61 and the second surface 3311 of the second body 331. The grounding component 6 is used to centrally connect the shielding layers of multiple coaxial cables, providing a unified, low-impedance grounding path, ensuring that the shielding layers of all coaxial cables share a common ground, reducing grounding potential differences, enhancing shielding effectiveness, and preventing signal crosstalk and external interference. In another embodiment, the first shielding layer 43 is simultaneously welded and fixed to the first surface 2311 of the first body 231 and the second surface 3311 of the second body 331.

[0041] Please refer to Figure 10 As shown, the first shielding layer 43 includes a first segment 431 and a second segment 432, both of which are exposed outside the first insulating layer 44. During manufacturing, the first insulating layer 44 is peeled off at two points to expose the first segment 431 and the second segment 432. The first segment 431 is connected to the first body 231 of the first grounding piece 23, and the second segment 432 is connected to the second body 331 of the second grounding piece 33. In some embodiments, along the second direction A2-A2, the width of the first body 231 is not greater than the length of the first segment 431, the width of the second body 331 is not greater than the length of the second segment 432, and the width of the grounding piece 6 is not greater than the length of the first segment 431, thereby ensuring sufficient contact between the grounding piece and the shielding layer.

[0042] Please refer to Figure 5 , Figure 7 and Figure 9 As shown, the wire-to-board connector includes a shield 8, which includes a base 81 and a plurality of shielding portions 82 connected to the base 81. The plurality of shielding portions 82 are correspondingly connected to a plurality of first main body portions 221. In some embodiments, each shielding portion 82 has a bend 83 on both sides, and along a first direction A1-A1, the first core 41 is at least partially located between two adjacent bends 83. By providing the bends 83 to shield adjacent paired first cables 4, external electromagnetic interference or internal signal crosstalk can be effectively blocked, thereby ensuring the stability and signal integrity of cable transmission.

[0043] In some embodiments, the bent portion 83 extends perpendicularly from the shielding portion 82 in a direction away from the first main body portion 221. That is, the bent portion 83 extends along a third direction A3-A3 (e.g., the vertical direction) perpendicular to the first direction A1-A1.

[0044] In some implementation methods, please refer to Figures 1 to 13As shown, the height of the bending part 83 along a third direction A3-A3 perpendicular to the first direction A1-A1 is h1, and the diameter of the first core 41 is d, where h1≥d. Along the third direction A3-A3, the first core 41 does not exceed the top surface 831 of the bending part 83, so as to ensure the shielding completeness, effectively prevent electromagnetic interference, and improve the signal transmission stability.

[0045] Specifically, refer to Figure 14 As shown, the shielding part 82 includes a flat part 821 and an inclined part 822, and the inclined part 822 connects the flat part 821 and the base part 81. The inclined part 822 extends from the flat part 821 to the direction away from the first main part 221, the flat part 821 is connected with the first main part 221, and the bending part 83 is connected with the flat part 821, so as to lift the height of the base part 81, and the base part 81 does not extend out of the first opening 11. In some embodiments, refer to Figure 12 As shown, the height of the inclined part 822 along a third direction A3-A3 perpendicular to the first direction A1-A1 is h2, where h1<h2.

[0046] Refer to Figure 13 and Figure 9 As shown, the first insulating block 24 includes a first surface 241 and a plurality of protrusions 242 protruding from the first surface 241, and a positioning groove 243 for positioning the inclined part 822 is formed between each two adjacent protrusions 242, so as to facilitate the positioning and installation of the shielding part 8.

[0047] In some embodiments, refer to Figure 10 and Figure 2 As shown, the first core 41 includes a connecting part 411 exposed outside the first insulating layer 42, and the connecting part 411 is welded and fixed with the first cable connecting part 211 of the first signal terminal S1. Along the second direction A2-A2, the length of the bending part 83 is greater than the length of the connecting part 411, so as to ensure the shielding completeness and effectively prevent electromagnetic interference.

[0048] In some embodiments, refer to Figure 2As shown, the outer metal shell 7 comprises a first shell 71, a second shell 72 and a cover plate 73, wherein the first shell 71 and the second shell 72 are detachably connected with the cover plate 73. The first shell 71 has a first receiving space 710, and the second shell 72 has a second receiving space 720. The insulating body 1 comprises a first mounting portion 1a and a second mounting portion 1b, and the first mounting portion 1a and the second mounting portion 1b are both provided with mounting holes 18. The first mounting portion 1a is at least partially arranged in the first receiving space 710, and the second mounting portion 1b is at least partially arranged in the second receiving space 720. The cover plate 73 has a third receiving space 730, and the first shell 71, the second shell 72 and the insulating body 1 are all arranged in the third receiving space 730. The cover plate 73 is located on different sides of the insulating body 1 in the thickness direction of the circuit board 200. The cover plate 73, the first shell 71 and the first mounting portion 1a of the insulating body 1 are fixed to the circuit board 200 by a fastening assembly 300. The cover plate 73, the second shell 72 and the second mounting portion 1b of the insulating body 1 are fixed to the circuit board 200 by another fastening assembly 300.

[0049] In some embodiments, as shown in Figure 4 and Figure 2 The first shell 71 and the second shell 72 both comprise a first protruding portion 701 protruding into the first slot 14, and the first protruding portion 701 is connected with the first grounding portion 232. The first shell 71 and the second shell 72 both comprise a second protruding portion 702 protruding into the second slot 15, and the second protruding portion 702 is connected with the second grounding portion 332.

[0050] In some embodiments, as shown in Figure 4 and ​ The first shell 71 and the second shell 72 are both provided with a clamping groove 703, and the cover plate 73 is provided with a clamping portion 732 protruding into the third receiving space 730. When the cover plate 73 is assembled with the first shell 71 and the second shell 72, the clamping portion 731 is clamped into the clamping groove 703, so as to realize positioning assembly of the two.

[0051] The above embodiments are only used to illustrate the present application and not to limit the technical solutions described in the present application. The understanding of the present application should be based on the skilled in the art, although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the skilled in the art can still modify or equivalently replace the present application, and all technical solutions and improvements which do not deviate from the spirit and scope of the present application should be covered in the scope of claims of the present application.

Claims

1. A wire-to-board connector, characterized in that, include: The first terminal module (2) includes a plurality of first signal terminals (S1), a plurality of first ground terminals (G1) and a first ground plate (23). Every two first signal terminals (S1) form a first differential pair (DP1). A first ground terminal (G1) is provided on each of the two adjacent sides of the first differential pair (DP1). The plurality of first ground terminals (G1) are connected to the first ground plate (23). The second terminal module (3) includes several second signal terminals (S2), several second ground terminals (G2) and a second grounding plate (33). Every two second signal terminals (S2) form a second differential pair (DP2). A second ground terminal (G2) is provided on each of the two adjacent sides of the second differential pair (DP2). Several second ground terminals (G2) are connected to the second grounding plate (33). A plurality of first cables (4), each first cable (4) comprising a first core (41), a first insulating layer (42) wrapped around the first core (41), and a first shielding layer (43) wrapped around the first insulating layer (42). The first core (41) is connected to the first signal terminal (S1), and the first shielding layer (43) is connected to both the first grounding plate (23) and the second grounding plate (33). A plurality of second cables (5), each second cable (5) includes a second core (51), a second insulating layer (52) wrapped around the second core (51), and a second shielding layer (53) wrapped around the second insulating layer (52). The second core (51) is connected to the second signal terminal (S2), and the second shielding layer (53) is connected to the second grounding plate (33).

2. The wire-to-board connector as described in claim 1, characterized in that, The first differential pair (DP1) and the first grounding terminal (G1) are arranged alternately along the first direction (A1-A1), the second differential pair (DP2) and the second grounding terminal (G2) are arranged alternately along the first direction (A1-A1), a plurality of the first grounding terminals (G1) and the first grounding piece (23) are integrally formed, a plurality of the second grounding terminals (G2) and the second grounding piece (33) are integrally formed, and the first grounding piece (23) and the second grounding piece (33) are arranged along a second direction (A2-A2) perpendicular to the first direction (A1-A1).

3. The wire-to-board connector as described in claim 2, characterized in that, The first grounding plate (23) includes a first surface (2311), the second grounding plate (33) includes a second surface (3311), the first cable (4) is located on the same side of the first surface (2311) and the second surface (3311), and the first surface (2311) and the second surface (3311) are flush.

4. The wire-to-board connector as described in claim 3, characterized in that, The first shielding layer (43) is simultaneously welded and fixed to the first surface (2311) and the second surface (3311).

5. The wire-to-board connector as described in claim 3, characterized in that, The wire-to-board connector includes a grounding component (6), which is welded to the first surface (2311). The grounding component (6) includes a third surface (61), and the first shielding layer (43) is welded to both the third surface (61) and the second surface (3311).

6. The wire-to-board connector as described in claim 2, characterized in that, The first cable (4) includes a first insulating sheath (44) sleeved outside the first shielding layer (43). After peeling off the first insulating sheath (44) at two points, the first segment (431) and the second segment (432) of the first shielding layer (43) are exposed outside the first insulating sheath (44). The first segment (431) is connected to the first grounding piece (23), and the second segment (432) is connected to the second grounding piece (33).

7. The wire-to-board connector as described in claim 3, characterized in that, The first terminal module (2) includes a first insulating block (24), a plurality of first signal terminals (S1) and a plurality of first ground terminals (G1) are disposed on the first insulating block (24), and the first surface (2311) is exposed outside the first insulating block (24). The second terminal module (3) includes a second insulating block (34), a plurality of second signal terminals (S2) and a plurality of second ground terminals (G2) are disposed on the second insulating block (34), and the second surface (3311) is exposed outside the second insulating block (34).

8. The wire-to-board connector as described in claim 7, characterized in that, The wire-to-board connector includes an insulating body (1), which includes a first opening (11), a second opening (12), and a partition wall (13) located between the first opening (11) and the second opening (12) in the second direction (A2-A2). The first insulating block (24) is at least partially installed in the first opening (11), and the second insulating block (34) is at least partially installed in the second opening (12). The partition wall (13) is provided with a cable positioning groove (130) for positioning the first cable (4).

9. The wire-to-board connector as described in claim 8, characterized in that, The wire-to-board connector also includes an outer metal housing (7) mounted outside the insulating body (1). The first grounding piece (23) is provided with a first grounding portion (232). The insulating body (1) is provided with a first slot (14). The first grounding portion (232) is exposed to the insulating body (1) from the first slot (14). The second grounding piece (33) is provided with a second grounding portion (332). The insulating body (1) is provided with a second slot (15). The second grounding portion (332) is exposed to the insulating body (1) from the second slot (15). Both the first grounding portion (232) and the second grounding portion (332) are in contact with the outer metal housing (7).

10. The wire-to-board connector as claimed in claim 1, characterized in that, The wire-to-board connector includes a shield (8), the shield (8) includes a shield (82), the first ground terminal (G1) includes a first main body (221) and a first mating part (222) connected to the first main body (221), the first main body (221) is connected to the first grounding piece (23), and the shield (82) is connected to the first main body (221).

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