Cable connector and manufacturing method thereof

Abstract

A cable connector comprises a built-in circuit board, a first cable and a first metal shielding cover. The built-in circuit board comprises a first signal conducting strip, a second signal conducting strip, a first grounding strip and a second grounding strip. The first cable includes a first core, a second core, and a first ground layer. The first metal shielding cover comprises a first main body part, a first extension part and a second extension part. The first metal shielding cover at least partially covers the first cable. And the first extension part is electrically contacted with the first grounding piece. And the second extension part is electrically contacted with the second grounding piece. The first main body part is provided with a first through hole, and the first grounding layer is exposed in the first through hole. The cable connector further comprises welding flux filled in the first through hole, so that the first main body part and the first grounding layer are connected together, and the shielding effect is improved. The invention further discloses a manufacturing method of the cable connector.

Description

[0001] This invention claims priority to Chinese Patent Application No. 202411171386.2, filed on August 23, 2024, entitled "Cable Connector and Manufacturing Method Thereof", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to a cable connector and its manufacturing method, belonging to the field of connector technology. Background Technology

[0003] Cable connectors in related technologies typically include several conductive terminals and several cables, wherein the conductive terminals typically include several signal terminal groups. The cables and the conductive terminals are usually electrically connected by soldering.

[0004] However, how to better shield the signal terminal group and cables to reduce crosstalk is a technical problem faced by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a cable connector with good shielding effect and its manufacturing method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a cable connector, comprising:

[0007] An embedded circuit board includes a first surface and a plurality of first conductive sheets exposed on the first surface. The plurality of first conductive sheets include a first signal conductive sheet, a second signal conductive sheet adjacent to the first signal conductive sheet, a first ground sheet adjacent to the first signal conductive sheet and located on one side of the first signal conductive sheet, and a second ground sheet adjacent to the second signal conductive sheet and located on one side of the second signal conductive sheet. The first signal conductive sheet and the second signal conductive sheet are arranged side by side along a first direction to form a first signal conductive sheet group. The first ground sheet and the second ground sheet are respectively located on both sides of the first signal conductive sheet group along the first direction.

[0008] A first cable, comprising a first core, a second core, a first insulating layer wrapped around the first core, a second insulating layer wrapped around the second core, and a first grounding layer located outside the first and second insulating layers; the first core is electrically in contact with a first signal conductive piece, and the second core is electrically in contact with a second signal conductive piece; and

[0009] A first metal shielding cover includes a first main body, a first sidewall extending from one side of the first main body, a first extension extending outward from the first sidewall, a second sidewall extending from the other side of the first main body, and a second extension extending outward from the second sidewall; the first metal shielding cover at least partially covers the first cable, the first extension is in electrical contact with the first grounding plate, and the second extension is in electrical contact with the second grounding plate; the first main body is provided with a first through hole, and the first grounding layer is exposed in the first through hole; the cable connector further includes a first fixing member located in the first through hole to connect the first main body and the first grounding layer together.

[0010] As a further improvement of the present invention, the first fixing member located in the first through hole fills the first through hole so as to completely cover the part of the first grounding layer exposed in the first through hole.

[0011] As a further improved technical solution of the present invention, the first cable further includes a third insulating layer located on the outer layer of the first grounding layer. The third insulating layer is provided with a first groove to divide the third insulating layer into a first end portion located at one end of the first groove and a first body portion located at the other end of the first groove. The first core and the second core both extend out of the first end portion. The first grounding layer is at least partially buried in the first end portion and the first body portion, and the first grounding layer is partially exposed in the first groove.

[0012] As a further improved technical solution of the present invention, the first cable further includes a second grounding layer located outside the first insulation layer and the second insulation layer, wherein the first grounding layer and the second grounding layer are both flat and arranged opposite to each other.

[0013] The first groove is an annular groove, the second grounding layer is at least partially buried in the first end and the first body, and the second grounding layer is partially exposed in the first groove.

[0014] As a further improvement of the present invention, the first extension corresponds to the first grounding piece, the first extension is provided with at least one first notch, and the cable connector includes solder filling the first notch to weld and fix the first extension to the first grounding piece.

[0015] As a further improvement of the present invention, the second extension corresponds to the second grounding piece, the second extension is provided with at least one second notch, and the cable connector includes solder filling the second notch to weld and fix the second extension to the second grounding piece.

[0016] As a further improved technical solution of the present invention, both the first grounding piece and the second grounding piece are straight strips and extend along a second direction, the second direction being perpendicular to the first direction. The width of the first grounding piece along the first direction is greater than the width of the first signal conductive piece along the first direction and also greater than the width of the second signal conductive piece along the first direction; the width of the second grounding piece along the first direction is greater than the width of the first signal conductive piece along the first direction and also greater than the width of the second signal conductive piece along the first direction.

[0017] As a further improvement of the present invention, the plurality of first conductive sheets further includes a first connecting portion connecting one end of the first grounding sheet and one end of the second grounding sheet, so that the first grounding sheet, the second grounding sheet and the first connecting portion are U-shaped.

[0018] As a further improved technical solution of the present invention, both the first grounding piece and the second grounding piece are straight strips and extend along the second direction, which is perpendicular to the first direction;

[0019] The length of the first connecting portion along the second direction is greater than the width of the first grounding piece along the first direction, and also greater than the width of the second grounding piece along the first direction.

[0020] As a further improved technical solution of the present invention, the plurality of first conductive sheets include a third signal conductive sheet, a fourth signal conductive sheet adjacent to the third signal conductive sheet, a third grounding sheet adjacent to the third signal conductive sheet and located on one side of the third signal conductive sheet, and a fourth grounding sheet adjacent to the fourth signal conductive sheet and located on one side of the fourth signal conductive sheet. The third signal conductive sheet and the fourth signal conductive sheet are arranged side by side along the first direction to form a second signal conductive sheet group. The third grounding sheet and the fourth grounding sheet are respectively located on both sides of the second signal conductive sheet group along the first direction.

[0021] The cable connector also includes:

[0022] The second cable includes a third core, a fourth core, a fourth insulating layer wrapped around the third core, a fifth insulating layer wrapped around the fourth core, and a third grounding layer located outside the fourth and fifth insulating layers; the third core is in electrical contact with the third signal conductive piece, and the fourth core is in electrical contact with the fourth signal conductive piece; and

[0023] The second metal shield includes a second main body, a third sidewall extending from one side of the second main body, a third extension extending outward from the third sidewall, a fourth sidewall extending from the other side of the second main body, and a fourth extension extending outward from the fourth sidewall; the second metal shield at least partially covers the second cable, the third extension is in electrical contact with the third grounding plate, and the fourth extension is in electrical contact with the fourth grounding plate; the second main body has a second through hole, and the third grounding layer is exposed in the second through hole; the cable connector further includes a second fixing member located in the second through hole to connect the second main body to the third grounding layer.

[0024] As a further improved technical solution of the present invention, the first signal conductive sheet group is located in the first row, the second signal conductive sheet group is located in the second row, and the first row and the second row are parallel to each other;

[0025] The first signal conductive sheet group and the second signal conductive sheet group are staggered along a second direction, which is perpendicular to the first direction.

[0026] As a further improved technical solution of the present invention, the first cable and the second cable are arranged adjacent to each other along the first direction and are located on the same layer.

[0027] As a further improvement of the present invention, the second metal shield is the same as the first metal shield.

[0028] As a further improvement of the present invention, the built-in circuit board includes a tongue plate portion, which is configured to be inserted into a mating connector, and at least one surface of the tongue plate portion is provided with a plurality of mating conductive sheets.

[0029] As a further improvement of the present invention, the built-in circuit board further includes a plurality of first holes located on both sides of the first signal conductive sheet along the first direction and a plurality of second holes located on both sides of the second signal conductive sheet along the first direction. The first holes and the second holes are configured to reduce the dielectric constant of the built-in circuit board in order to improve the high-frequency performance of the first signal conductive sheet and the second signal conductive sheet.

[0030] As a further improvement of the present invention, the first grounding layer is flat and is not arranged around the outer layer of the first insulating layer and the second insulating layer.

[0031] As a further improvement of the present invention, the first cable further includes a shielding layer located outside the first insulation layer and the second insulation layer, wherein the shielding layer includes aluminum foil and the first grounding layer includes flat copper strip.

[0032] The present invention also discloses a method for manufacturing the aforementioned cable connector, the method comprising:

[0033] An embedded circuit board is provided, the embedded circuit board including a first surface and a plurality of first conductive sheets exposed on the first surface, the plurality of first conductive sheets including a first signal conductive sheet, a second signal conductive sheet adjacent to the first signal conductive sheet, a first ground sheet adjacent to the first signal conductive sheet and located on one side of the first signal conductive sheet, and a second ground sheet adjacent to the second signal conductive sheet and located on one side of the second signal conductive sheet, the first signal conductive sheet and the second signal conductive sheet being arranged side by side along a first direction to form a first signal conductive sheet group, the first ground sheet and the second ground sheet being located on both sides of the first signal conductive sheet group along the first direction;

[0034] A first cable is provided, the first cable including a first core, a second core, a first insulating layer wrapped around the first core, a second insulating layer wrapped around the second core, and a first grounding layer located outside the first insulating layer and the second insulating layer;

[0035] The first core is welded and fixed to the first conductive sheet, and the second core is welded and fixed to the second conductive sheet;

[0036] A pre-made solder is provided and the pre-made solder is placed on the first grounding plate and the second grounding plate;

[0037] A first metal shielding cover is provided, the first metal shielding cover including a first main body portion, a first sidewall extending from one side of the first main body portion, a first extension portion extending outward from the first sidewall, a second sidewall extending from the other side of the first main body portion, and a second extension portion extending outward from the second sidewall; the first main body portion is provided with a first through hole;

[0038] The first metal shield covers at least partially over the first cable, exposing the first grounding layer in the first through hole;

[0039] The pre-made solder is melted to weld and fix the first extension to the first grounding plate, and the second extension to the second grounding plate; and

[0040] A first fastener is provided and at least partially inserted into the first through hole, thereby fixing the first main body to the first grounding layer by means of the first fastener.

[0041] Compared to existing technologies, the present invention provides a first metal shielding cover, which includes a first main body, a first sidewall extending from one side of the first main body, a first extension extending outward from the first sidewall, a second sidewall extending from the other side of the first main body, and a second extension extending outward from the second sidewall. The first metal shielding cover at least partially covers the first cable, the first extension is in electrical contact with the first grounding plate, and the second extension is in electrical contact with the second grounding plate. The first main body has a first through hole, and the first grounding layer is exposed in the first through hole. The cable connector further includes a first fixing member located in the first through hole to connect the first main body and the first grounding layer together. With this configuration, the cable connector of the present invention has a better shielding effect. Attached Figure Description

[0042] Figure 1 This is a three-dimensional schematic diagram of the cable connector of the present invention in one embodiment;

[0043] Figure 2 yes Figure 1 The main view;

[0044] Figure 3 yes Figure 1 A bottom view;

[0045] Figure 4 yes Figure 1 A partial exploded 3D view, in which the internal circuit board is separated;

[0046] Figure 5 yes Figure 4 Top view;

[0047] Figure 6 yes Figure 4 A bottom view;

[0048] Figure 7 yes Figure 4 Top view of the built-in circuit board described in the image;

[0049] Figure 8 yes Figure 4 A bottom view of the built-in circuit board described in the image;

[0050] Figure 9 yes Figure 1 Partial exploded 3D diagram;

[0051] Figure 10 yes Figure 9 Another perspective of a partially exploded 3D view;

[0052] Figure 11 yes Figure 9 A magnified view of part B within the middle frame;

[0053] Figure 12 yes Figure 10 A magnified view of part C within the middle frame;

[0054] Figure 13 yes Figure 9 A magnified view of part D within the middle frame;

[0055] Figure 14 yes Figure 10 A magnified view of part E within the middle frame;

[0056] Figure 15 yes Figure 9 Further exploded view;

[0057] Figure 16 yes Figure 15 Another perspective of the exploded 3D view;

[0058] Figure 17 It is along Figure 1 A cross-sectional view of the FF line;

[0059] Figure 18 yes Figure 17 A magnified view of the H section within the middle frame;

[0060] Figure 19 This is a front view of the first cable of the present invention in a second embodiment;

[0061] Figure 20 for Figure 19 A bottom view;

[0062] Figure 21 for Figure 19 Top view;

[0063] Figure 22 for Figure 19 A schematic diagram of the shielding layer in the diagram;

[0064] Figure 23 This is a cross-sectional structural diagram of the shielding layer of the first cable of the present invention in one embodiment;

[0065] Figure 24 This is a cross-sectional structural diagram of the shielding layer of the first cable of the present invention in another embodiment;

[0066] Figure 25 for Figure 22 A cross-sectional structural diagram of region J in one embodiment;

[0067] Figure 26 for Figure 22 A cross-sectional view of region J in another embodiment;

[0068] Figure 27 This is a front view of the first cable of the present invention in the third embodiment;

[0069] Figure 28 yes Figure 27 A schematic cross-sectional view of the first cable in the diagram along its cross-section;

[0070] Figure 29 yes Figure 28 A cross-sectional view of another embodiment. Detailed Implementation

[0071] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. If several embodiments exist, features in these embodiments may be combined with each other without conflict. When the description refers to the drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The descriptions in the following exemplary embodiments do not represent all embodiments consistent with the present invention; rather, they are merely examples of apparatuses, products, and / or methods consistent with some aspects of the present invention as set forth in the claims.

[0072] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of protection of this invention. The singular forms “a,” “the,” or “the” as used in the specification and claims of this invention are also intended to include the plural forms unless the context clearly indicates otherwise.

[0073] It should be understood that the terms "first," "second," and similar words used in the specification and claims of this invention do not indicate any order, quantity, or importance, but are merely used to distinguish features. Similarly, the terms "an" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise stated, the terms "before," "after," "upper," "lower," and similar words appearing in this invention are for ease of explanation only and are not limited to a specific location or spatial orientation. The terms "comprising" or "including" are an open-ended expression, meaning that the element preceding "comprising" or "including" encompasses the element following "comprising" or "including" and its equivalents, but this does not preclude the element preceding "comprising" or "including" from also including other elements. In this invention, the term "several" means two or more.

[0074] Please refer to Figures 1 to 18As shown, the present invention discloses a cable connector 100, which includes a built-in circuit board 1, a plurality of cables electrically connected to the built-in circuit board 1, a plurality of metal shields covering the connection between the built-in circuit board 1 and the cables, and a fixing block 4 fixed to the cables.

[0075] Please combine Figures 1 to 7 As shown in the illustrated embodiment of the present invention, the built-in circuit board 1 includes a first surface 11 (e.g., an upper surface), a second surface 12 (e.g., a lower surface) opposite to the first surface 11, a plurality of first conductive sheets 13 exposed on the first surface 11, and a plurality of second conductive sheets 14 exposed on the second surface 12.

[0076] The plurality of first conductive sheets 13 include a first signal conductive sheet S1, a second signal conductive sheet S2 adjacent to the first signal conductive sheet S1, a first ground sheet G1 adjacent to the first signal conductive sheet S1 and located on one side of the first signal conductive sheet S1, and a second ground sheet G2 adjacent to the second signal conductive sheet S2 and located on one side of the second signal conductive sheet S2. The first signal conductive sheet S1 and the second signal conductive sheet S2 are arranged side by side along a first direction A1-A1 (e.g., a left-right direction) to form a first signal conductive sheet group DP1, and the first ground sheet G1 and the second ground sheet G2 are respectively located on both sides of the first signal conductive sheet group DP1 along the first direction A1-A1. In one embodiment of the present invention, the first signal conductive sheet group DP1 is a first differential pair for transmitting signals.

[0077] In the embodiment illustrated in the present invention, both the first grounding piece G1 and the second grounding piece G2 are straight strips extending along a second direction A2-A2 (e.g., the front-to-back direction), which is perpendicular to the first direction A1-A1. The width of the first grounding piece G1 along the first direction A1-A1 is greater than the width of the first signal conductive piece S1 along the first direction A1-A1, and also greater than the width of the second signal conductive piece S2 along the first direction A1-A1; similarly, the width of the second grounding piece G2 along the first direction A1-A1 is greater than the width of the first signal conductive piece S1 along the first direction A1-A1, and also greater than the width of the second signal conductive piece S2 along the first direction A1-A1. This configuration allows the first grounding piece G1 and the second grounding piece G2 to provide better shielding for the first signal conductive piece group DP1, thereby improving the quality of signal transmission.

[0078] In the embodiment illustrated in the present invention, in order to further improve the quality of signal transmission, the plurality of first conductive sheets 13 further include a first connecting portion 131 connecting one end of the first ground sheet G1 and one end of the second ground sheet G2, so that the first ground sheet G1, the second ground sheet G2 and the first connecting portion 131 form a U-shape, and the first signal conductive sheet group DP1 is located in the space of the U-shape.

[0079] Specifically, in the embodiment illustrated in the present invention, the length of the first connecting portion 131 along the second direction A2-A2 is greater than the width of the first grounding piece G1 along the first direction A1-A1, and also greater than the width of the second grounding piece G2 along the first direction A1-A1. This arrangement maximizes the use of the space within the built-in circuit board 1 to create a larger grounding area, thereby improving shielding.

[0080] The plurality of first conductive sheets 13 further include a third signal conductive sheet S3, a fourth signal conductive sheet S4 adjacent to the third signal conductive sheet S3, a third grounding sheet G3 adjacent to and located on one side of the third signal conductive sheet S3, and a fourth grounding sheet G4 adjacent to and located on one side of the fourth signal conductive sheet S4. The third signal conductive sheet S3 and the fourth signal conductive sheet S4 are arranged side by side along the first direction A1-A1 (e.g., left-right direction) to form a second signal conductive sheet group DP2, and the third grounding sheet G3 and the fourth grounding sheet G4 are respectively located on both sides of the second signal conductive sheet group DP2 along the first direction A1-A1. In one embodiment of the present invention, the second signal conductive sheet group DP2 is a second differential pair for transmitting signals.

[0081] In the embodiment illustrated in the present invention, both the third grounding piece G3 and the fourth grounding piece G4 are straight strips extending along a second direction A2-A2 (e.g., the front-to-back direction), which is perpendicular to the first direction A1-A1. The width of the third grounding piece G3 along the first direction A1-A1 is greater than the width of the third signal conductive piece S3 along the first direction A1-A1, and also greater than the width of the fourth signal conductive piece S4 along the first direction A1-A1; similarly, the width of the fourth grounding piece G4 along the first direction A1-A1 is greater than the width of the third signal conductive piece S3 along the first direction A1-A1, and also greater than the width of the fourth signal conductive piece S4 along the first direction A1-A1. This configuration allows the third grounding piece G3 and the fourth grounding piece G4 to provide better shielding for the first signal conductive piece group DP1, thereby improving the quality of signal transmission.

[0082] In the embodiment illustrated in the present invention, in order to further improve the quality of signal transmission, the plurality of first conductive sheets 13 further include a second connecting portion 132 connecting one end of the third ground sheet G3 and one end of the fourth ground sheet G4, so that the third ground sheet G3, the fourth ground sheet G4 and the second connecting portion 132 form a U-shape, and the first signal conductive sheet group DP1 is located in the space of the U-shape.

[0083] Specifically, in the embodiment illustrated in the present invention, the length of the second connecting portion 132 along the second direction A2-A2 is greater than the width of the third grounding piece G3 along the first direction A1-A1, and also greater than the width of the fourth grounding piece G4 along the first direction A1-A1. This arrangement maximizes the use of the space within the built-in circuit board 1 to create a larger grounding area, thereby improving shielding.

[0084] In the embodiment illustrated in the present invention, the first signal conductive sheet group DP1 is located in the first row L1, and the second signal conductive sheet group DP2 is located in the second row L2, with the first row L1 and the second row L2 being parallel to each other. The first signal conductive sheet group DP1 and the second signal conductive sheet group DP2 are staggered along the second direction A2-A2. This arrangement helps to reduce crosstalk between the first signal conductive sheet group DP1 and the second signal conductive sheet group DP2.

[0085] The arrangement of the plurality of second conductive sheets 14 is the same as that of the plurality of first conductive sheets 13, and will not be described again in this invention.

[0086] Additionally, in the embodiment illustrated in the present invention, the built-in circuit board 1 further includes a tongue portion 15, which is located at one end (e.g., the front end) of the built-in circuit board 1. The tongue portion 15 is configured to be inserted into a mating connector (not shown), and at least one surface of the tongue portion 15 is provided with a plurality of mating conductive sheets 151.

[0087] In addition, please combine Figure 8 As shown, in one embodiment of the present invention, the built-in circuit board 1 further includes a plurality of first holes 161 located on both sides of the first signal conductive sheet S1 along the first direction A1-A1 and a plurality of second holes 162 located on both sides of the second signal conductive sheet S2 along the first direction A1-A1. The first holes 161 and the second holes 162 are configured to reduce the dielectric constant of the built-in circuit board 1 to improve the high-frequency performance of the first signal conductive sheet S1 and the second signal conductive sheet S2.

[0088] Please combine Figure 8As shown, similarly, in one embodiment of the present invention, the built-in circuit board 1 further includes a plurality of third holes 163 located on both sides of the third signal conductive sheet S3 along the first direction A1-A1 and a plurality of fourth holes 164 located on both sides of the fourth signal conductive sheet S4 along the first direction A1-A1. The third holes 163 and the fourth holes 164 are configured to reduce the dielectric constant of the built-in circuit board 1 to improve the high-frequency performance of the third signal conductive sheet S3 and the fourth signal conductive sheet S4.

[0089] Please combine Figures 9 to 18 As shown, the plurality of cables includes a plurality of first cables 21, a plurality of second cables 22, a plurality of third cables 23, and a plurality of fourth cables 24. The first cables 21 are electrically connected to the first signal conductive piece S1, the second signal conductive piece S2, the first ground piece G1, and the second ground piece G2; the second cables 22 are electrically connected to the third signal conductive piece S3, the fourth signal conductive piece S4, the third ground piece G3, and the fourth ground piece G4; and the plurality of third cables 23 and the plurality of fourth cables 24 are electrically connected to the plurality of second conductive pieces 14. For simplicity, only one first cable 21 and one second cable 22 located on the same side of the built-in circuit board 1 will be described below.

[0090] The first cable 21 includes a first core 211, a second core 212, a first insulating layer 213 wrapped around the first core 211, a second insulating layer 214 wrapped around the second core 212, a first grounding layer 215 located outside the first insulating layer 213 and the second insulating layer 214, a second grounding layer 216 located outside the first insulating layer 213 and the second insulating layer 214, and a third insulating layer 217 located outside the first grounding layer 215 and the second grounding layer 216. In the embodiment illustrated in the present invention, both the first grounding layer 215 and the second grounding layer 216 are flat and extend along the second direction A2-A2. The first grounding layer 215 and the second grounding layer 216 are disposed opposite to each other, wherein the first grounding layer 215 is located at the upper part of the first cable 21, and the second grounding layer 216 is located at the lower part of the first cable 21.

[0091] The first core 211 is electrically in contact with the first signal conductive sheet S1, and the second core 212 is electrically in contact with the second signal conductive sheet S2. In one embodiment of the present invention, the first core 211 is welded to the first signal conductive sheet S1, and the second core 212 is welded to the second signal conductive sheet S2.

[0092] Furthermore, in the embodiment illustrated in the present invention, the third insulating layer 217 is provided with a first groove 2170 to divide the third insulating layer 217 into a first end portion 2171 located at one end of the first groove 2170 and a first body portion 2172 located at the other end of the first groove 2170. Both the first core 211 and the second core 212 extend beyond the first end portion 2171. The first ground layer 215 and the second ground layer 216 are at least partially embedded in the first end portion 2171 and the first body portion 2172, and both the first ground layer 215 and the second ground layer 216 are partially exposed in the first groove 2170. The first end portion 2171 is integrally annular to restrain the ends of the first ground layer 215 and the second ground layer 216, preventing the first ground layer 215 and the second ground layer 216 from becoming disordered.

[0093] Similarly, the second cable 22 includes a third core 221, a fourth core 222, a fourth insulating layer 223 wrapped around the third core 221, a fifth insulating layer 224 wrapped around the fourth core 222, a third grounding layer 225 located outside the fourth insulating layer 223 and the fifth insulating layer 224, a fourth grounding layer 226 located outside the fourth insulating layer 223 and the fifth insulating layer 224, and a sixth insulating layer 227 located outside the third grounding layer 225 and the fourth grounding layer 226. In the embodiment illustrated in the present invention, both the third grounding layer 225 and the fourth grounding layer 226 are flat and extend along the second direction A2-A2. The third grounding layer 225 and the fourth grounding layer 226 are disposed opposite to each other, wherein the third grounding layer 225 is located at the upper part of the second cable 22, and the fourth grounding layer 226 is located at the lower part of the second cable 22.

[0094] The third core 221 is electrically in contact with the third signal conductive sheet S3, and the fourth core 222 is electrically in contact with the fourth signal conductive sheet S4. In one embodiment of the present invention, the third core 221 is welded and fixed to the third signal conductive sheet S3, and the fourth core 222 is welded and fixed to the fourth signal conductive sheet S4.

[0095] Furthermore, in the embodiment illustrated in the present invention, the sixth insulating layer 227 is provided with a second groove 2270 to divide the sixth insulating layer 227 into a second end portion 2271 located at one end of the second groove 2270 and a second body portion 2272 located at the other end of the second groove 2270. The third core 221 and the fourth core 222 both extend beyond the second end portion 2271. The third grounding layer 225 and the fourth grounding layer 226 are at least partially embedded in the second end portion 2271 and the second body portion 2272, and both are partially exposed in the second groove 2270. The second end portion 2271 is integrally annular to restrain the ends of the third grounding layer 225 and the fourth grounding layer 226, preventing them from becoming disordered.

[0096] Those skilled in the art will understand that by staggering the first signal conductive sheet group DP1 and the second signal conductive sheet group DP2 along the second direction A2-A2, the first cable 21 and the second cable 22 can be arranged on the same layer, thereby avoiding the increase in height caused by cable stacking.

[0097] The plurality of metal shielding covers include a first metal shielding cover 31, a second metal shielding cover 32, a third metal shielding cover 33, and a fourth metal shielding cover 34. The first metal shielding cover 31 is fastened around the connection between the first cable 21 and the first conductive sheet 13; the second metal shielding cover 32 is fastened around the connection between the second cable 22 and the first conductive sheet 13; the third metal shielding cover 33 is fastened around the connection between the third cable 23 and the second conductive sheet 14; and the fourth metal shielding cover 34 is fastened around the connection between the fourth cable 24 and the second conductive sheet 14.

[0098] In the illustrated embodiment of the present invention, the first metal shield 31 includes a first main body 310, a first sidewall 311 extending from one side of the first main body 310, a first extension 313 extending outward from the first sidewall 311, a second sidewall 312 extending from the other side of the first main body 310, and a second extension 314 extending outward from the second sidewall 312. The first metal shield 31 at least partially covers the first cable 21. The first extension 313 is in electrical contact with the first grounding plate G1, and the second extension 314 is in electrical contact with the second grounding plate G2. The first main body 310 is provided with a first through hole 3101, and the first grounding layer 215 is exposed in the first through hole 3101. The cable connector 100 also includes a first fixing member 41 located in the first through hole 3101 to connect the first main body 310 and the first grounding layer 215 together. Preferably, the first fixing member 41 located in the first through hole 3101 fills the first through hole 3101 to completely cover the portion of the first ground layer 215 exposed in the first through hole 3101, thereby further improving shielding. In some embodiments of the present invention, the first fixing member 41 includes, but is not limited to, solder, connecting elements, etc. When the first fixing member 41 is solder, the molten solder, based on its fluidity, can fill the first through hole 3101 well and weld the first main body 310 to the first ground layer 215. Of course, the connecting element can also be any other element such as a screw used to fix the first main body 310 to the first ground layer 215.

[0099] In the embodiment illustrated in the present invention, the first extension 313 corresponds to the first grounding piece G1. The first extension 313 is provided with at least one first notch 3131. The cable connector 100 includes solder 42 filled in the first notch 3131 to weld and fix the first extension 313 to the first grounding piece G1. Those skilled in the art will understand that the number, shape, and size of the first notch 3131 can be flexibly adjusted according to actual needs, and the present invention will not elaborate on this further.

[0100] Similarly, the second extension 314 corresponds to the second grounding piece G2. The second extension 314 is provided with at least one second notch 3141. The cable connector 100 includes solder 43 filled in the second notch 3141 to weld and fix the second extension 314 to the second grounding piece G2. Those skilled in the art will understand that the number, shape, and size of the second notch 3141 can be flexibly adjusted according to actual needs, and this will not be elaborated further in this invention.

[0101] In the illustrated embodiment of the present invention, the second metal shield 32 includes a second main body 320, a third sidewall 321 extending from one side of the second main body 320, a third extension 323 extending outward from the third sidewall 321, a fourth sidewall 322 extending from the other side of the second main body 320, and a fourth extension 324 extending outward from the fourth sidewall 322. The second metal shield 32 at least partially covers the second cable 22. The third extension 323 is in electrical contact with the third grounding plate G3, and the fourth extension 324 is in electrical contact with the fourth grounding plate G4. The second main body 320 is provided with a second through hole 3201, and the third grounding layer 225 is exposed in the second through hole 3201. The cable connector 100 also includes a second fixing member 44 located in the second through hole 3201 to connect the second main body 320 and the third grounding layer 225 together. Preferably, the second fastener 44 located in the second through-hole 3201 fills the second through-hole 3201 to completely cover the portion of the third ground layer 225 exposed in the second through-hole 3201, thereby further improving shielding. In some embodiments of the present invention, the second fastener 44 includes, but is not limited to, solder, connecting elements, etc. When the second fastener 44 is solder, the molten solder, based on its fluidity, can fill the second through-hole 3201 well and weld the second main body 320 to the third ground layer 225. Of course, the connecting element can also be any other element, such as a screw, used to fix the second main body 320 to the third ground layer 225.

[0102] In the illustrated embodiment of the present invention, the third extension 323 corresponds to the third grounding piece G3. The third extension 323 is provided with at least one third notch 3231. The cable connector 100 includes solder 45 filled in the third notch 3231 to weld and fix the third extension 323 to the third grounding piece G3. Those skilled in the art will understand that the number, shape, and size of the third notch 3231 can be flexibly adjusted according to actual needs, and this will not be elaborated further in this invention.

[0103] Similarly, the fourth extension 324 corresponds to the fourth grounding piece G4, and the fourth extension 324 is provided with at least one fourth notch 3241. The cable connector 100 includes solder 46 filled in the fourth notch 3241 to weld and fix the fourth extension 324 to the fourth grounding piece G4. Those skilled in the art will understand that the number, shape, and size of the fourth notch 3241 can be flexibly adjusted according to actual needs, and this will not be elaborated further in this invention.

[0104] In the embodiment illustrated in the present invention, the second metal shield 32 is the same as the first metal shield 31, so as to share parts and reduce costs.

[0105] Compared to existing technologies, the present invention provides a first metal shielding cover 31, which includes a first main body 310, a first sidewall 311 extending from one side of the first main body 310, a first extension 313 extending outward from the first sidewall 311, a second sidewall 312 extending from the other side of the first main body 310, and a second extension 314 extending outward from the second sidewall 312. The first metal shielding cover 31 at least partially covers the first cable 21. The first extension 313 is in electrical contact with the first grounding plate G1, and the second extension 314 is in electrical contact with the second grounding plate G2. The first main body 310 has a first through hole 3101, and the first grounding layer 215 is exposed in the first through hole 3101. The cable connector 100 includes a first fixing member 41 located in the first through hole 3101 to connect the first main body 310 and the first grounding layer 215 together. With this configuration, the cable connector 100 of the present invention has a better shielding effect.

[0106] The second metal shield 32 can achieve a similar shielding effect to the first metal shield 31, which will not be described in detail here.

[0107] Please combine Figures 19 to 26 As shown, in a second embodiment of the first cable 21 of the cable connector 100 of the present invention, the first cable 21 includes a first core 211, a second core 212, a first insulating layer 213 that is at least partially wrapped around the first core 211 in the circumferential direction, a second insulating layer 214 that is at least partially wrapped around the second core 212 in the circumferential direction, an intermediate layer 218 that is at least partially wrapped around the first insulating layer 213 and the second insulating layer 214 in the circumferential direction, a shielding layer 219 that is at least partially wrapped around the intermediate layer 218 in the circumferential direction, and a third insulating layer 217 that is located on the outer layer of the shielding layer 219 in the circumferential direction.

[0108] In the embodiment illustrated in the present invention, both the first core 211 and the second core 212 are cylindrical. The first core 211 is used to transmit a first signal, and the second core 212 is used to transmit a second signal. In one embodiment of the present invention, the first signal and the second signal form a high-speed differential pair. In another embodiment of the present invention, both the first core 211 and the second core 212 are silver-plated metal conductors (e.g., silver-plated copper wire) to improve the quality of signal transmission.

[0109] In the embodiment illustrated in the present invention, the first insulating layer 213 and the second insulating layer 214 are separately disposed. Both the first insulating layer 213 and the second insulating layer 214 extend along the longitudinal direction LL (i.e., the second direction A2-A2). The first insulating layer 213 and the second insulating layer 214 are adjacent to each other, parallel to each other, and in contact with each other. The first insulating layer 213 and the second insulating layer 214 are arranged side-by-side along a width direction WW (i.e., the first direction A1-A1) perpendicular to the longitudinal direction LL. Both the first insulating layer 213 and the second insulating layer 214 are cylindrical. In one embodiment of the present invention, the first insulating layer 213 is a polyolefin or a fluoropolymer, and the second insulating layer 214 is a polyolefin or a fluoropolymer. The materials of the first insulating layer 213 and the second insulating layer 214 can be the same or different. Of course, those skilled in the art will understand that in other embodiments of the present invention, the first insulating layer 213 and the second insulating layer 214 can also be formed as a single insulating layer, for example, an elliptical insulating layer.

[0110] In one embodiment of the present invention, the intermediate layer 218 is at least partially wrapped around or sleeved on the first insulating layer 213 and the second insulating layer 214. The intermediate layer 218 is a buffer insulating layer wrapped around or sleeved on the outside of the first insulating layer 213 and the second insulating layer 214, and the intermediate layer 218 has the functions of insulation and buffering.

[0111] In one embodiment of the invention, the intermediate layer 218 is made of foamed polyolefin, such as foamed polypropylene. The intermediate layer 218 is spirally wound around the first insulating layer 213 and the second insulating layer 214 along the longitudinal direction LL of the first cable 21. Specifically, the intermediate layer 218 is continuously wound around the first insulating layer 213 and the second insulating layer 214 along the longitudinal direction LL of the first cable 21. Of course, in other embodiments, the intermediate layer 218 can also be directly sleeved onto the first insulating layer 213 and the second insulating layer 214.

[0112] In one embodiment of the present invention, the shielding layer 219 includes at least a first metal layer 2191 located on the outer side and a second metal layer 2192 located on the inner side. The first metal layer 2191 and the second metal layer 2192 are made of the same or different metal materials. The first metal layer 2191 and the second metal layer 2192 are directly or indirectly composited together. Specifically, the first metal layer 2191 is located on the outer layer of the shielding layer 219 away from the first core 211 and the second core 212, and the second metal layer 2192 is located on the inner layer of the shielding layer 219 adjacent to the first core 211 and the second core 212.

[0113] In one embodiment of the present invention, the shielding layer 219 includes a first metal layer 2191 and a second metal layer 2192. This not only increases the thickness of the shielding layer 219 but also improves the shielding effect of the first cable 21, thereby enhancing the reliability of signal transmission. The first metal layer 2191 and the second metal layer 2192 are directly bonded together by high temperature and high pressure. For example, the shielding layer 219 can be an integral high temperature and high pressure composite layer. In another embodiment of the present invention, the shielding layer 219 includes a base film 2190 and a first metal layer 2191 and a second metal layer 2192 respectively bonded to two opposing surfaces of the base film 2190. The first metal layer 2191 and the second metal layer 2192 are bonded together with the two surfaces of the base film 2190 by an adhesive. For example, the shielding layer 219 can be an adhesive composite layer. In one embodiment of the present invention, the shielding layer 219 is a non-all-metal conductive material, such as conductive fabric, conductive plastic, or conductive foam.

[0114] The base film 2190 may be made of polyester material, for example, polyethylene terephthalate. The first metal layer 2191 is located on the outer layer of the shielding layer 219 away from the first core 211 and the second core 212, and the second metal layer 2192 is located on the inner layer of the shielding layer 219 adjacent to the first core 211 and the second core 212.

[0115] In the embodiment illustrated in the present invention, the shielding layer 219 is a double-sided conductive aluminum foil, that is, both the first metal layer 2191 and the second metal layer 2192 are aluminum foil, to solve the problem that the shielding layer 219 is prone to cracking when bent when using a composite strip structure. In another embodiment of the present invention, the shielding layer 219 is a double-sided conductive copper foil.

[0116] In the illustrated embodiment of the present invention, the shielding layer 219 includes two connectors and an overlapping area 25. The overlapping area 25 is formed by the superposition of the two connectors of the shielding layer 219 to improve electrical performance. In one embodiment of the present invention, one of the connectors is a first connector 251 and the other connector is a second connector 252. The second connector 252 is superimposed on the first connector 251, and the aluminum foil of the first connector 251 and the aluminum foil of the second connector 252 are in contact with each other to achieve contact conductivity.

[0117] Specifically, the first connector 251 is adjacent to the first core 211 and the second core 212 relative to the second connector 252, the first metal layer 2191 of the first connector 252 is adjacent to the first core 211 and the second core 212 relative to the second metal layer 2192 of the second connector 252, and the first metal layer 2191 of the first connector 251 and the second metal layer 2192 of the second connector 252 are in contact with each other.

[0118] In one embodiment illustrated in the present invention, the distance between the central axis of the first core 211 and the central axis of the second core 212 is S, the first connector 251 has a first end face 2511, the second connector 252 has a second end face 2521, and the distance between the first end face 2511 and the second end face 2521 along the width direction WW is K, where S > K.

[0119] In one embodiment of the present invention, the shielding layer 219 includes a first arcuate portion 2193, a second arcuate portion 2194 opposite to the first arcuate portion 2193, a first straight portion 2195 connecting one side of the first arcuate portion 2193 and one side of the second arcuate portion 2194, and a connection region opposite to the first straight portion 2195. The connection region includes the overlapping area 25 and the second straight portion 2196. The first connector 251 can be connected to either the first arcuate portion 2193 or the second straight portion 2196. The second arcuate portion 2194 and the second connector 252 are respectively connected to opposite sides of the second straight portion 2196. Figure 22 As shown, the shielding layer 219 has a perimeter, defined as the length extending circumferentially in a plane perpendicular to the longitudinal direction LL. For example, in... Figure 22On the plane, the length extends from the first end face 2511, along the first connector 251, the first arc-shaped portion 2193, the first straight portion 2195, the second arc-shaped portion 2194, the second straight portion 2196, the raised portion 2197, and the second connector 252, to the second end face 2521. In one embodiment of the present invention, the ratio of the distance K of the overlapping area 25 to the perimeter of the shielding layer 219 is the overlap rate, which can be set between 10% and 50%. With this configuration, the first cable 21 can achieve a better balance in terms of crosstalk, insertion loss, and signal symmetry (refer to SCD21 parameters). For example, if the overlap rate is too low, crosstalk problems are likely to occur; if the overlap rate is too high, signal symmetry problems are also likely to occur.

[0120] In the embodiment illustrated in the present invention, the connection area further includes a lifting portion 2197. The second connector 252 and the second straight portion 2196 are respectively connected to opposite sides of the lifting portion 2197. The lifting portion 2197 gradually moves away from the first core 211 and the second core 212 from the second straight portion 2196 toward the second connector 252. In some embodiments, the lifting portion 2197 causes the second connector 252 to protrude away from the first core 211 and the second core 212, making it easier for the first metal layer 2191 on the outer side of the second connector 252 to connect with the grounding portion of the connector, thereby improving the grounding shielding effect.

[0121] In the embodiment illustrated in this invention, by setting the shielding layer 219 as a double-sided conductive aluminum foil, the problem that the shielding layer 219 is prone to cracking when bent when using a composite strip structure is solved.

[0122] In the embodiment illustrated in the present invention, the first cable 21 does not have a ground wire.

[0123] In one embodiment of the present invention, the third insulating layer 217 is the outermost insulating layer of the first cable 21, and the third insulating layer 217 may be made of polyester material. In another embodiment of the present invention, the third insulating layer 217 may be made of polyimide material.

[0124] Please combine Figure 27 as well as Figure 28As shown, in a third embodiment of the first cable 21 of the cable connector 100 of the present invention, the first cable 21 includes a first core 211, a second core 212, a first insulating layer 213 at least partially wrapped around the first core 211 in the circumferential direction, a second insulating layer 214 at least partially wrapped around the second core 212 in the circumferential direction, an intermediate layer 218 at least partially wrapped around the first insulating layer 213 and the second insulating layer 214 in the circumferential direction, a shielding layer 219 at least partially wrapped around the intermediate layer 218 in the circumferential direction, a first grounding layer 215 located outside the shielding layer 219, and a third insulating layer 217 located circumferentially outside the first grounding layer 215. The cable connector 100 in the third embodiment of the present invention is substantially the same as the cable connector 100 in the second embodiment of the present invention. For the same or corresponding technical features, please refer to the description of the cable connector 100 in the second embodiment of the present invention, which will not be repeated here. The main difference between the cable connector 100 in the third embodiment of the present invention and the cable connector 100 in the second embodiment is that the cable connector 100 in the third embodiment further includes the first grounding layer 215. The first grounding layer 215 will be described in detail below.

[0125] In the illustrated embodiment of the present invention, the first grounding layer 215 is flat and extends into a flat strip along the longitudinal direction LL. The first grounding layer 215 is located on the upper part of the first cable 21. In one embodiment of the present invention, the first grounding layer 215 is a copper strip or copper foil, thus the first grounding layer 215 is suitable for soldering, and it can be connected to the grounding structure outside the first cable 21 by soldering, for example, by soldering with tin. In one embodiment of the present invention, the first grounding layer 215 is exposed in the first through hole 3101, and the first fixing member 41 is solder and is located in the first through hole 3101, and the first fixing member 41 is connected to the first body 310 and the first grounding layer 215 by soldering. In one embodiment of the present invention, the first grounding layer 215 is a tin-plated copper strip with a tin-plated surface, so that it can be directly soldered to the grounding structure outside the first cable 21.

[0126] In one embodiment of the present invention, the shielding layer 219 may refer to Figures 19 to 26In a second embodiment of the first cable 21, the shielding layer 219 includes a first metal layer 2191 located on the outer side and a second metal layer 2192 located on the inner side. The metal material of the first metal layer 2191 and the metal material of the second metal layer 2192 may be the same or different. The metal material of the first metal layer 2191 and the metal material of the first grounding layer 215 may be the same or different. The metal material of the second metal layer 2192 and the metal material of the first grounding layer 215 may be the same or different.

[0127] In one embodiment of the present invention, the first metal layer 2191 comprises aluminum or other non-copper metal material, the second metal layer 2192 comprises aluminum or other non-copper metal material, and the first ground layer 215 comprises copper. For example, the first metal layer 2191 and the second metal layer 2192 are both aluminum foil, and the first ground layer 215 is copper strip or copper foil. In another embodiment of the present invention, the first metal layer 2191, the second metal layer 2192, and the first ground layer 215 all comprise copper. For example, the first metal layer 2191 and the second metal layer 2192 are both copper foil, and the first ground layer 215 is copper strip or copper foil.

[0128] In one embodiment of the present invention, the metal material of the first metal layer 2191 and the metal material of the second metal layer 2192 are both different from the metal material of the first ground layer 215. In the embodiment illustrated in the present invention, the metal material of the first metal layer 2191 and the metal material of the second metal layer 2192 are the same, both being aluminum foil, and the metal material of the first ground layer 215 is copper strip.

[0129] In one embodiment of the present invention, the shielding layer 219 may be a single-layer first metal layer 2191, the first metal layer 2191 contacting the intermediate layer 218, and the first grounding layer 215 contacting the first metal layer 2191. The metal material of the first metal layer 2191 and the metal material of the first grounding layer 215 may be the same or different. For example, the first metal layer 2191 may be aluminum foil, and the first grounding layer 215 may be copper foil or copper strip; or for example, the first metal layer 2191 may be copper foil, and the first grounding layer 215 may be copper foil or copper strip.

[0130] In one embodiment of the present invention, the shielding layer 219 may be a composite structure of the base film 2190 and the first metal layer 2191, wherein the base film 2190 contacts the intermediate layer 218, and the first grounding layer 215 contacts the first metal layer 2191. The metal material of the first metal layer 2191 and the metal material of the first grounding layer 215 may be the same or different. For example, the first metal layer 2191 may be an aluminum foil, the first grounding layer 215 may be a copper foil or copper strip, and the base film 2190 may be a non-metallic material; or for example, the first metal layer 2191 may be a copper foil, and the first grounding layer 215 may be a copper foil or copper strip.

[0131] In one embodiment of the present invention, the shielding layer 219 may be a composite structure of the base film 2190 and the second metal layer 2192, wherein the second metal layer 2192 contacts the intermediate layer 218, and the first grounding layer 215 contacts the base film 2190. The metal material of the second metal layer 2192 and the metal material of the first grounding layer 215 may be the same or different. For example, the second metal layer 2192 may be an aluminum foil, the first grounding layer 215 may be a copper foil, and the base film 2190 may be a non-metallic material; or for example, the second metal layer 2192 may be a copper foil, and the first grounding layer 215 may be a copper foil or copper strip.

[0132] In one embodiment of the present invention, the shielding layer 219 may be a single-layer base film 2190, the base film 2190 being a non-metallic conductive material, such as conductive fabric, conductive plastic or conductive foam, the base film 2190 contacting the intermediate layer 218, and the first grounding layer 215 contacting the base film 2190.

[0133] The first grounding layer 215 is in contact with the shielding layer 219. In the embodiment illustrated in the present invention, by setting the shielding layer 219 as a single-layer / single-sided conductive aluminum foil or a double-layer / double-sided conductive aluminum foil, the problem of easy cracking when the shielding layer 219 adopts a composite strip structure is solved. In addition, by setting the first grounding layer 215, the problem of aluminum foil welding is solved. In other words, if the shielding layer 219 is made of aluminum foil, welding will be difficult; and if the shielding layer 219 has copper foil, the copper foil will easily crack when the wire is bent. The single-layer / single-sided conductive aluminum foil or double-layer / double-sided conductive aluminum foil shielding layer 219 and the flat tin-plated copper strip first grounding layer 215 used in the specific embodiment of the present invention cleverly solve the above problems. The first cable 21 of the present invention has a low-loss tight coupling structure, which is suitable for transmitting high-speed signals.

[0134] In the illustrated embodiment of the present invention, the first cable 21 does not have a ground wire. At least a portion of the first grounding layer 215 is configured as a grounding element of the first cable 21. In the illustrated embodiment of the present invention, the first grounding layer 215 is configured as a grounding element of the first cable 21, or at least a portion of the first grounding layer 215 is configured as a grounding element in contact with the outside. In the illustrated embodiment of the present invention, the first grounding layer 215 and the shielding layer 219 are separately disposed. The material selection of the first grounding layer 215 can be implemented according to its own needs, and the material selection of the shielding layer 219 can also be implemented according to its own needs, thereby reducing the difficulty of selecting the respective materials of the first grounding layer 215 and the shielding layer 219 and improving the design flexibility.

[0135] In one embodiment of the present invention, the shielding layer 219 includes an overlapping region 25, which can be referred to the foregoing. Figures 19 to 26 In a second embodiment of the first cable 21 shown, the first grounding layer 215 is disposed on the outer layer of the overlapping region 25 and contacts the overlapping region 25, but the invention is not limited thereto. In other embodiments, the first grounding layer 215 is disposed on the opposite side of the overlapping region 25 and does not contact the overlapping region 25.

[0136] Please combine Figure 29 As shown, in a fourth embodiment of the first cable 21 of the cable connector 100 of the present invention, the first cable 21 includes a first core 211, a second core 212, a first insulating layer 213 at least partially wrapped around the first core 211 in the circumferential direction, a second insulating layer 214 at least partially wrapped around the second core 212 in the circumferential direction, an intermediate layer 218 at least partially wrapped around the first insulating layer 213 and the second insulating layer 214 in the circumferential direction, a shielding layer 219 at least partially wrapped around the intermediate layer 218 in the circumferential direction, a first grounding layer 215 located outside the shielding layer 219, a second grounding layer 216 located outside the shielding layer 219, and a third insulating layer 217 located circumferentially outside the first grounding layer 215 and the second grounding layer 216. The cable connector 100 in the third embodiment of the present invention is substantially the same as the cable connector 100 in the second embodiment of the present invention. For the same or corresponding technical features, please refer to the description of the cable connector 100 in the second embodiment of the present invention; these will not be repeated here. The main difference between the cable connector 100 in the fourth embodiment of the present invention and the cable connector 100 in the third embodiment of the present invention is that the cable connector 100 in the fourth embodiment of the present invention further includes the second grounding layer 216.

[0137] In the illustrated embodiment of the present invention, both the first grounding layer 215 and the second grounding layer 216 are flat and extend along the longitudinal direction LL into a flat strip. The first grounding layer 215 and the second grounding layer 216 are arranged back-to-back, wherein the first grounding layer 215 is located above the first cable 21, and the second grounding layer 216 is located below the first cable 21. In one embodiment of the present invention, both the first grounding layer 215 and the second grounding layer 216 are copper strips or copper foils. The metal material of the first metal layer 2191 is different from the metal material of the first grounding layer 215. The metal material of the second metal layer 2192 is different from the metal material of the second grounding layer 216. In the illustrated embodiment of the present invention, the metal material of the first metal layer 2191 and the metal material of the second metal layer 2192 are the same, both being aluminum foil. The metal material of the first grounding layer 215 and the metal material of the second grounding layer 216 are the same, both being copper strips or copper foils.

[0138] Both the first grounding layer 215 and the second grounding layer 216 are in contact with the shielding layer 219. In the embodiment illustrated in the present invention, by setting the shielding layer 219 as a double-sided conductive aluminum foil, the problem of easy cracking when the shielding layer 219 is bent when using a composite strip structure is solved. In addition, by setting the first grounding layer 215 and the second grounding layer 216, the problem of aluminum foil welding is solved. In other words, if the shielding layer 219 is made of aluminum foil, it will lead to welding difficulties; and if the shielding layer 219 has copper foil, it will lead to easy cracking of the copper foil when the wire is bent. The double-sided conductive aluminum foil shielding layer 219 and the copper strip first grounding layer 215 and second grounding layer 216 used in the specific embodiment of the present invention cleverly solve the above problems. The first cable 21 of the present invention has a low-loss tight coupling structure, which is suitable for transmitting high-speed signals.

[0139] In the illustrated embodiment of the present invention, the first cable 21 does not have a grounding wire. At least a portion of the first grounding layer 215 and / or the second grounding layer 216 is configured as a grounding element of the first cable 21. In the illustrated embodiment of the present invention, both the first grounding layer 215 and the second grounding layer 216 are configured as grounding elements of the first cable 21. In the illustrated embodiment of the present invention, the first grounding layer 215 and the second grounding layer 216 are each separately disposed from the shielding layer 219. The material selection of the first grounding layer 215, the second grounding layer 216, and the shielding layer 219 can be implemented according to their own needs, thereby reducing the difficulty of selecting the respective materials of the first grounding layer 215, the second grounding layer 216, and the shielding layer 219, and improving the design flexibility.

[0140] In one embodiment of the present invention, the shielding layer 219 includes an overlapping region 25, which can be referred to the foregoing. Figures 19 to 26 In a second embodiment of the first cable 21 shown, the first grounding layer 215 is disposed on the outer layer of the overlapping area 25 and contacts the overlapping area 25, and the second grounding layer 216 is disposed on the opposite side of the overlapping area 25.

[0141] This invention discloses a method for manufacturing the first cable 21, comprising:

[0142] A first core 211 is provided, and a first insulating layer 213 is wrapped around the first core 211;

[0143] A second core 212 is provided, and a second insulating layer 214 is wrapped around the second core 212;

[0144] A shielding layer 219 is provided, which is wrapped around the first insulating layer 213 and the second insulating layer 214;

[0145] A first grounding layer 215 is provided, and the first grounding layer 215 is attached to one side of the shielding layer 219;

[0146] A third insulating layer 217 is provided and disposed on the outer layer of the first grounding layer 215.

[0147] In one embodiment of the present invention, the manufacturing method of the first cable 21 further includes providing an intermediate layer 218, wrapping the intermediate layer 218 around the first insulating layer 213 and the second insulating layer 214; and wrapping the shielding layer 219 around the intermediate layer 218.

[0148] In one embodiment of the present invention, the shielding layer 219 is wrapped around the intermediate layer 218 in the circumferential direction.

[0149] In one embodiment of the present invention, when the shielding layer 219 is wrapped around the intermediate layer 218 in the circumferential direction, the second connector 252 is further superimposed on the first connector 251 to form an overlapping area 25.

[0150] In one embodiment of the present invention, the first grounding layer 215 is attached to one side of the shielding layer 219 along the longitudinal direction LL.

[0151] In one embodiment of the present invention, the first grounding layer 215 is an outer layer attached along the longitudinal direction LL to the overlapping area 25 of the shielding layer 219.

[0152] The present invention also discloses a method for manufacturing the first cable 21, comprising:

[0153] A first core 211 is provided, and a first insulating layer 213 is wrapped around the first core 211;

[0154] A second core 212 is provided, and a second insulating layer 214 is wrapped around the second core 212;

[0155] An intermediate layer 218 is provided, which is wrapped around the first insulating layer 213 and the second insulating layer 214;

[0156] A shielding layer 219 is provided, which is wrapped around the intermediate layer 218;

[0157] A first grounding layer 215 and a second grounding layer 216 are provided, and the first grounding layer 215 and the second grounding layer 216 are attached to both sides of the shielding layer 219.

[0158] A third insulating layer 217 is provided and disposed on the outer layer of the first ground layer 215 and the second ground layer 216.

[0159] Those skilled in the art will understand that the relevant steps involved in the manufacturing method of the first cable 21 described above can be flexibly adjusted in sequence as needed.

[0160] In the embodiment illustrated in this invention, the structures of the second cable 22, the third cable 23, and the fourth cable 24 are all the same as the structure of the first cable 21, and will not be described again in this invention.

[0161] The present invention also discloses a method for manufacturing the above-mentioned cable connector 100, which includes:

[0162] An embedded circuit board 1 is provided, the embedded circuit board 1 including a first surface 11 and a plurality of first conductive sheets 13 exposed on the first surface 11. The plurality of first conductive sheets 13 include a first signal conductive sheet S1, a second signal conductive sheet S2 adjacent to the first signal conductive sheet S1, a first ground sheet G1 adjacent to the first signal conductive sheet S1 and located on one side of the first signal conductive sheet S1, and a second ground sheet G2 adjacent to the second signal conductive sheet S2 and located on one side of the second signal conductive sheet S2. The first signal conductive sheet S1 and the second signal conductive sheet S2 are arranged side by side along a first direction A1-A1 to form a first signal conductive sheet group DP1. The first ground sheet G1 and the second ground sheet G2 are respectively located on both sides of the first signal conductive sheet group DP1 along the first direction A1-A1.

[0163] A first cable 21 is provided, the first cable 21 includes a first core 211, a second core 212, a first insulating layer 213 wrapped around the first core 211, a second insulating layer 214 wrapped around the second core 212, and a first ground layer 215 located on the outer layer of the first insulating layer 213 and the second insulating layer 214;

[0164] The first core 211 is welded and fixed to the first signal conductive sheet S1, and the second core 212 is welded and fixed to the second signal conductive sheet S2;

[0165] Pre-made solders 42 and 43 are provided and respectively placed on the first grounding plate G1 and the second grounding plate G2;

[0166] A first metal shielding cover 31 is provided, the first metal shielding cover 31 includes a first main body portion 310, a first sidewall 311 extending from one side of the first main body portion 310, a first extension portion 313 extending outward from the first sidewall 311, a second sidewall 312 extending from the other side of the first main body portion 310, and a second extension portion 314 extending outward from the second sidewall 312; the first main body portion 310 is provided with a first through hole 3101;

[0167] The first metal shield 32 is at least partially covered on the first cable 21, so that the first grounding layer 215 is exposed in the first through hole 3101;

[0168] The pre-made solders 42 and 43 are melted to weld and fix the first extension 313 to the first grounding piece G1, and the second extension 314 is welded and fixed to the second grounding piece G2; and

[0169] A first fastener 41 is provided and at least partially inserted into the first through hole 3101, thereby fixing the first main body 310 to the first grounding layer 215 together.

[0170] Those skilled in the art will understand that, taking the first metal shield 31 as an example, the first notch 3131 and the second notch 3141 of the first metal shield 31 correspond to the pre-made solder 42 and 43, respectively; when the pre-made solder 42 and 43 melt, the solder 42 and 43 can fill the first notch 3131 and the second notch 3141, and the solder climbing process can be observed from the outside, which is helpful for judging the soldering quality.

[0171] The assembly methods of the second metal shield 32, the third metal shield 33 and the fourth metal shield 34 are the same as those of the first metal shield 31, and will not be described again in this invention.

[0172] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of the present invention should be based on those skilled in the art. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A cable connector, characterized in that, include: An embedded circuit board includes a first surface and a plurality of first conductive sheets exposed on the first surface. The plurality of first conductive sheets include a first signal conductive sheet, a second signal conductive sheet adjacent to the first signal conductive sheet, a first ground sheet adjacent to the first signal conductive sheet and located on one side of the first signal conductive sheet, and a second ground sheet adjacent to the second signal conductive sheet and located on one side of the second signal conductive sheet. The first signal conductive sheet and the second signal conductive sheet are arranged side by side along a first direction to form a first signal conductive sheet group. The first ground sheet and the second ground sheet are respectively located on both sides of the first signal conductive sheet group along the first direction. The first cable includes a first core, a second core, a first insulating layer wrapped around the first core, a second insulating layer wrapped around the second core, and a first grounding layer located outside the first insulating layer and the second insulating layer; the first core is in electrical contact with the first signal conductive sheet, and the second core is in electrical contact with the second signal conductive sheet; as well as A first metal shielding cover includes a first main body, a first sidewall extending from one side of the first main body, a first extension extending outward from the first sidewall, a second sidewall extending from the other side of the first main body, and a second extension extending outward from the second sidewall; the first metal shielding cover at least partially covers the first cable, the first extension is in electrical contact with the first grounding plate, and the second extension is in electrical contact with the second grounding plate; the first main body is provided with a first through hole, and the first grounding layer is exposed in the first through hole; the cable connector further includes a first fixing member located in the first through hole to connect the first main body and the first grounding layer together.

2. The cable connector as described in claim 1, characterized in that: The first fastener located in the first through hole fills the first through hole to completely cover the portion of the first grounding layer exposed in the first through hole.

3. The cable connector as described in claim 1, characterized in that: The first cable further includes a third insulating layer located outside the first grounding layer. The third insulating layer is provided with a first groove to divide the third insulating layer into a first end portion located at one end of the first groove and a first body portion located at the other end of the first groove. The first core and the second core both extend out of the first end portion. The first grounding layer is at least partially buried in the first end portion and the first body portion, and the first grounding layer is partially exposed in the first groove.

4. The cable connector as described in claim 3, characterized in that: The first cable also includes a second grounding layer located outside the first insulation layer and the second insulation layer, wherein the first grounding layer and the second grounding layer are both flat and arranged opposite to each other; The first groove is an annular groove, the second grounding layer is at least partially buried in the first end and the first body, and the second grounding layer is partially exposed in the first groove.

5. The cable connector as described in claim 1, characterized in that: The first extension corresponds to the first grounding plate, the first extension has at least one first notch, and the cable connector includes solder filling the first notch to weld the first extension to the first grounding plate.

6. The cable connector as described in claim 1, characterized in that: The second extension corresponds to the second grounding piece, and the second extension has at least one second notch. The cable connector includes solder filling the second notch to weld the second extension to the second grounding piece.

7. The cable connector as described in claim 1, characterized in that: Both the first grounding piece and the second grounding piece are straight strips extending along a second direction, which is perpendicular to the first direction. The width of the first grounding piece along the first direction is greater than the width of the first signal conductive piece along the first direction and also greater than the width of the second signal conductive piece along the first direction. The width of the second grounding piece along the first direction is greater than the width of the first signal conductive piece along the first direction and also greater than the width of the second signal conductive piece along the first direction.

8. The cable connector as described in claim 1, characterized in that: The plurality of first conductive sheets further include a first connecting portion connecting one end of the first grounding sheet and one end of the second grounding sheet, such that the first grounding sheet, the second grounding sheet, and the first connecting portion are U-shaped.

9. The cable connector as described in claim 8, characterized in that: Both the first grounding plate and the second grounding plate are straight strips and extend along a second direction, which is perpendicular to the first direction. The length of the first connecting portion along the second direction is greater than the width of the first grounding piece along the first direction, and also greater than the width of the second grounding piece along the first direction.

10. The cable connector as claimed in claim 1, characterized in that: The plurality of first conductive sheets include a third signal conductive sheet, a fourth signal conductive sheet adjacent to the third signal conductive sheet, a third grounding sheet adjacent to the third signal conductive sheet and located on one side of the third signal conductive sheet, and a fourth grounding sheet adjacent to the fourth signal conductive sheet and located on one side of the fourth signal conductive sheet. The third signal conductive sheet and the fourth signal conductive sheet are arranged side by side along the first direction to form a second signal conductive sheet group. The third grounding sheet and the fourth grounding sheet are respectively located on both sides of the second signal conductive sheet group along the first direction. The cable connector also includes: The second cable includes a third core, a fourth core, a fourth insulating layer wrapped around the third core, a fifth insulating layer wrapped around the fourth core, and a third grounding layer located outside the fourth and fifth insulating layers; the third core is in electrical contact with the third signal conductive piece, and the fourth core is in electrical contact with the fourth signal conductive piece; as well as The second metal shield includes a second main body, a third sidewall extending from one side of the second main body, a third extension extending outward from the third sidewall, a fourth sidewall extending from the other side of the second main body, and a fourth extension extending outward from the fourth sidewall; the second metal shield at least partially covers the second cable, the third extension is in electrical contact with the third grounding plate, and the fourth extension is in electrical contact with the fourth grounding plate; the second main body has a second through hole, and the third grounding layer is exposed in the second through hole; the cable connector further includes a second fixing member located in the second through hole to connect the second main body to the third grounding layer.

11. The cable connector as claimed in claim 10, characterized in that: The first signal conductive sheet group is located in the first row, and the second signal conductive sheet group is located in the second row, with the first row and the second row being parallel to each other; The first signal conductive sheet group and the second signal conductive sheet group are staggered along a second direction, which is perpendicular to the first direction.

12. The cable connector as claimed in claim 11, characterized in that: The first cable and the second cable are arranged adjacent to each other along the first direction and are located on the same layer.

13. The cable connector as described in claim 10, characterized in that: The second metal shield is the same as the first metal shield.

14. The cable connector as claimed in claim 1, characterized in that: The built-in circuit board includes a tongue portion configured to be inserted into a mating connector, and at least one surface of the tongue portion is provided with a plurality of mating conductive sheets.

15. The cable connector as claimed in claim 1, characterized in that: The built-in circuit board further includes a plurality of first holes located on both sides of the first signal conductive sheet along the first direction and a plurality of second holes located on both sides of the second signal conductive sheet along the first direction. The first holes and the second holes are configured to reduce the dielectric constant of the built-in circuit board in order to improve the high-frequency performance of the first signal conductive sheet and the second signal conductive sheet.

16. The cable connector as claimed in claim 1, characterized in that: The first grounding layer is flat and is not arranged around the outer layer of the first insulating layer and the second insulating layer.

17. The cable connector as claimed in claim 1, characterized in that: The first cable further includes a shielding layer located outside the first and second insulation layers, wherein the shielding layer comprises aluminum foil and the first grounding layer comprises flat copper strip.

18. A method for manufacturing a cable connector, characterized in that: The cable connector is the cable connector as described in any one of claims 1 to 17, and the manufacturing method includes: An embedded circuit board is provided, the embedded circuit board including a first surface and a plurality of first conductive sheets exposed on the first surface, the plurality of first conductive sheets including a first signal conductive sheet, a second signal conductive sheet adjacent to the first signal conductive sheet, a first ground sheet adjacent to the first signal conductive sheet and located on one side of the first signal conductive sheet, and a second ground sheet adjacent to the second signal conductive sheet and located on one side of the second signal conductive sheet, the first signal conductive sheet and the second signal conductive sheet being arranged side by side along a first direction to form a first signal conductive sheet group, the first ground sheet and the second ground sheet being located on both sides of the first signal conductive sheet group along the first direction; A first cable is provided, the first cable including a first core, a second core, a first insulating layer wrapped around the first core, a second insulating layer wrapped around the second core, and a first grounding layer located outside the first insulating layer and the second insulating layer; The first core is welded and fixed to the first conductive sheet, and the second core is welded and fixed to the second conductive sheet; A pre-made solder is provided and the pre-made solder is placed on the first grounding plate and the second grounding plate; A first metal shielding cover is provided, the first metal shielding cover including a first main body portion, a first sidewall extending from one side of the first main body portion, a first extension portion extending outward from the first sidewall, a second sidewall extending from the other side of the first main body portion, and a second extension portion extending outward from the second sidewall; the first main body portion is provided with a first through hole; The first metal shield covers at least partially over the first cable, exposing the first grounding layer in the first through hole; The pre-made solder is melted to weld and fix the first extension to the first grounding plate, and the second extension to the second grounding plate; and The first fastener is provided and at least partially inserted into the first through hole, thereby fixing the first main body to the first grounding layer.

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