Cable connector

Abstract

The application discloses a cable connector, which comprises an insulating seat, a first terminal array, a second terminal array, a metal shell and a cable; the insulating seat is provided with a support platform; the first terminal array and the second terminal array each comprise at least one pair of differential signal terminals and ground terminals; the cable comprises a core wire group, and the core wire group comprises signal conductors and ground conductors; wherein a plurality of accommodating grooves are arranged between the first terminal array and the second terminal array; the signal conductors are electrically connected to the differential signal terminals on one side of the support platform; and the ground conductors are bent into one of the accommodating grooves and are electrically connected to the ground terminals on the other side of the support platform. The ground conductors are directly arranged on the lateral sides of the differential signal terminals, thereby improving the electromagnetic shielding effect between two adjacent pairs of differential signal terminals, improving the electromagnetic shielding effect of the first terminal array and the second terminal array, reducing the electromagnetic interference in the signal transmission process, and ensuring the stability of high-frequency signal transmission.

Description

[Technical Field]

[0001] This invention relates to the field of cable connector technology, and in particular to a cable connector that improves the electromagnetic shielding effect at the solder joint. [Background Technology]

[0002] Connectors are generally divided into wire-end connectors and board-end connectors. They are used to electrically connect two active devices by interlocking. A wire-end connector typically includes an insulating base, terminal blocks passing through the insulating base, and a cable connected to the terminal blocks. The insulating base has a support platform to support the terminal blocks. The terminal blocks and cables are soldered to the support platform, thus electrically connecting the cable to the terminal blocks. When mated with a compatible board-end connector, the terminal blocks in the two connectors make contact and connect to ensure the transmission of current or signals. To avoid excessive cable connector width, terminal blocks are placed on both the top and bottom sides of the support platform, making the arrangement of the terminal blocks more compact. Terminal blocks typically include multiple signal terminals arranged sequentially and a ground terminal located on one side of the signal terminals. The ground terminal reduces electromagnetic interference between signals, ensuring the transmission of high-frequency signals. A cable typically includes multiple core wire groups. Each core wire group usually includes a signal wire soldered to the signal terminals, a ground wire soldered to the ground terminal, a shielding layer wrapped around the signal wire and ground wire, and an insulating layer.

[0003] When existing cables are soldered to terminal blocks, in order to shield the upper and lower terminal blocks, the signal wires and ground wires of the same core group are connected to the signal terminals and ground terminals on both sides of the support platform, respectively. This ensures the shielding height after the ground wire is connected to the ground terminal, achieving electromagnetic shielding for the upper and lower sub-blocks. However, when the ground wire crosses the support platform, it can only be placed behind the support platform, so the two sub-blocks are still subject to significant electromagnetic interference and crosstalk.

[0004] Therefore, it is necessary to design an improved cable connector to overcome the above problems. [Summary of the Invention]

[0005] To address the problems encountered in the background technology, the present invention aims to provide a cable connector. By providing multiple receiving channels through the support platform between the first terminal block and the second terminal block, the grounding conductor of the ground wire is bent into one of the receiving channels and electrically connected to the second soldering part. This allows the ground wire to be embedded in the receiving channel and arranged between the two terminal blocks, thereby solving the problems of large electromagnetic interference and crosstalk between the first and second terminal blocks. At the same time, the ground wire is embedded in the receiving channel and arranged on the side of the signal terminal, which can also improve the electromagnetic shielding effect between adjacent signal terminals.

[0006] To achieve the above objectives, the present invention employs the following technical means:

[0007] A cable connector having intersecting first and second directions, the cable connector comprising:

[0008] An insulating base, the insulating base having an exposed support platform, the support platform having opposing first and second sides in a second direction;

[0009] A first terminal block and a second terminal block are provided, the first terminal block and the second terminal block passing through the insulating base along a first direction, the first terminal block and the second terminal block being respectively arranged on a first side and a second side of the support platform; each of the first terminal block and the second terminal block includes at least one signal terminal and a grounding terminal arranged on one side of the signal terminal; the signal terminal is provided with a first soldering part at one end near the support platform, and the grounding terminal is provided with a second soldering part at one end near the support platform; the first soldering part and the second soldering part of the first terminal block are exposed on the first side of the support platform, and the first soldering part and the second soldering part of the second terminal block are exposed on the second side of the support platform; the second soldering parts of the first terminal block and the second soldering parts of the second terminal block are staggered.

[0010] A metal shell covers the insulating base;

[0011] A cable electrically connects a first terminal block and a second terminal block; the cable includes an outer sheath and at least two core wire groups located within the outer sheath; each core wire group includes a signal wire, a ground wire, a shielding layer wrapped around the signal wire and the ground wire, and an insulating layer wrapped around the shielding layer; one end of the signal wire is exposed outside the shielding layer and the insulating layer to form a signal conductor, and one end of the ground wire is exposed outside the shielding layer and the insulating layer to form a grounding conductor;

[0012] The support platform is provided with a plurality of receiving channels extending through the first terminal block and the second terminal block along a second direction. The ends of the plurality of second welding portions of the first terminal block and the second terminal block are respectively exposed in the plurality of receiving channels. The signal conductors of the same core wire group are electrically connected to the first welding portions located on the first side or the second side of the support platform, and the grounding conductor is bent into one of the receiving channels and electrically connected to the second welding portions located on the second side or the first side of the support platform.

[0013] In one embodiment, the signal conductor extends in a straight line along a first direction, and the grounding conductor includes a bent portion and a fixing portion; the bent portion extends in a strip shape along a second direction and is embedded in the receiving channel; the fixing portion extends from the bent portion toward the corresponding second welding portion along the first direction and is welded and fixed to the second welding portion; the end of the bent portion is electrically coupled to the end of the corresponding second welding portion.

[0014] In one embodiment, the cable connector has a third direction, wherein the first direction, the second direction, and the third direction intersect each other;

[0015] The signal terminals on the first terminal block are differential signal terminals, and the signal terminals on the second terminal block are differential signal terminals. The ground terminal is arranged on one side of a pair of signal terminals.

[0016] Each core wire group includes two signal lines and one ground wire; the grounding conductor of the ground wire in the same core wire group is located at the center between the signal conductors of the two signal lines in the third direction; the two signal conductors and one grounding conductor in the same core wire group are arranged in an isosceles triangle shape; at least two core wire groups are arranged in parallel at intervals along the third direction.

[0017] In the first direction, the length of the first welded part is greater than the length of the second welded part.

[0018] In one embodiment, a plurality of the receiving channels are respectively disposed between the two first solder portions of each pair of signal terminals;

[0019] The first welded part has a notch at its end near the support platform, and the notch is located on the side of the first welded part near the receiving channel.

[0020] In one embodiment, at least two overflow grooves are provided on the support platform; each overflow groove extends along a first direction in the shape of a strip groove, and multiple overflow grooves are arranged opposite to each other on both sides of the first welding part and / or the second welding part; each overflow groove is connected to the corresponding receiving channel.

[0021] In one embodiment, the cable connector has a third direction, wherein the first direction, the second direction, and the third direction intersect each other;

[0022] The receiving channel includes a near-ground section and a far-ground section; the near-ground section is located at one end of the receiving channel close to the second welding part, and the far-ground section is located at one end of the receiving channel away from the second welding part; the near-ground section and the far-ground section are connected.

[0023] In the third direction, the width of the near section is greater than the width of the far section.

[0024] In one embodiment, in a first direction, the depth of the depression in the near-ground section is not equal to the depth of the depression in the far-ground section.

[0025] In one embodiment, the two side walls of the far section are provided with inclined guide surfaces, and the inclined guide surfaces on both sides are inclined with the spacing gradually increasing along the direction close to the cable.

[0026] In one embodiment, the insulating base includes an insulating shell, a first insulating block and a second insulating block assembled on the insulating shell; the first insulating block and the second insulating block are joined along a second direction, and one of the near-ground section and the far-ground section of the same accommodating channel is disposed on the first insulating block and the other is disposed on the second insulating block.

[0027] In one embodiment, the insulating base includes an insulating shell, a first insulating block and a second insulating block assembled to the insulating shell; the first insulating block covers the first terminal block, and the second insulating block covers the second terminal block;

[0028] The signal terminal includes a contact portion, a bent portion, a contracted portion, an embedded portion, an exposed portion, and a first solder portion connected sequentially along a first direction; the bent portion extends out of the outside of the first insulating block or the second insulating block, the exposed portion is exposed in the corresponding opening provided in the first insulating block or the second insulating block, and the contracted portion and the embedded portion are both embedded in the first insulating block or the second insulating block;

[0029] In the third direction, the width of the contraction section is smaller than the width of the embedded section, the width of the embedded section is smaller than the width of the end of the bend away from the contact portion, and the width of the embedded section is smaller than the width of the exposed section.

[0030] In one embodiment, a buckle is provided at one end of the metal shell near the support platform, the insulating seat is inserted into the metal shell along a first direction, and a slot is provided on the insulating seat corresponding to the buckle position. The buckle is bent into the slot to lock and fix the metal shell and the insulating seat.

[0031] The outer surface of the insulating base is provided with a raised rib, which is elongated and extends along a first direction, and the raised rib abuts against the inner surface of the metal shell.

[0032] In one embodiment, the minimum distance between the shielding layer and the end of the first welded portion is 0.1 mm to 0.24 mm.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. By providing multiple receiving channels through the support platform along a second direction between the first and second terminal blocks, and bending the grounding conductor of the ground wire into one of these receiving channels and electrically connecting it to the second welding part located on the support platform, the ground wire can be bent and embedded into the receiving channel when crossing from one side of the support platform to the other. This allows the grounding conductor to be directly arranged on the side of the signal terminals, thereby improving the electromagnetic shielding effect between adjacent signal terminals and also improving the electromagnetic shielding effect between the first and second terminal blocks, reducing electromagnetic interference during signal transmission, reducing crosstalk, and ensuring the stability of high-frequency signal transmission. Furthermore, by embedding the grounding conductor of the ground wire into the receiving channel of the support platform, the space occupied by the grounding conductor between the support platform and the cable shielding layer is reduced, thereby reducing the exposed length of the signal and ground wires between the shielding layer and the support platform, improving the electromagnetic shielding effect of the connector and the cable welding area, further reducing electromagnetic interference during signal transmission, reducing crosstalk, and ensuring the stability of high-frequency signal transmission.

[0035] 2. The bent portion extends along the second direction and is embedded in the receiving channel. The fixing portion extends from the bent portion toward the second welding portion along the first direction and is welded and fixed to the second welding portion. The ends of the bent portion and the second welding portion are electrically coupled, enabling signal transmission between the fixing portion and the second welding portion through direct contact. Even with a small gap between the ends of the bent portion and the second welding portion, signal transmission can still be achieved through electrical coupling, thereby increasing the signal transmission area and improving the high-frequency signal transmission effect. Furthermore, the bent portion extends in the second direction, improving the electromagnetic shielding effect on the first and second terminal blocks in the second direction. By embedding the bent portion into the receiving channel while the fixing portion extends along the first direction, the electromagnetic shielding effect between two adjacent pairs of signal terminals in the first direction is improved, thereby reducing electromagnetic interference during signal transmission, reducing crosstalk, and ensuring the stability of high-frequency signal transmission.

[0036] 3. By making the length of the first welding part greater than that of the second welding part in the first direction, the first welding part and the second welding part are arranged in a staggered manner in the first direction. When welding the core wire group of the cable, the setting position of the second welding part of the grounding terminal can be clearly and easily identified quickly, thereby achieving rapid positioning during the welding and wiring process and improving assembly efficiency.

[0037] 4. By providing a notch at the end of the first weld portion away from the insulating shell, and positioning the notch in a groove shape on the side of the first weld portion near the receiving channel, the first weld portion is prevented from protruding into the receiving channel, thus avoiding damage to the signal terminal and ground wire conduction. This notch on the side of the first weld portion near the receiving channel also ensures a high yield rate in the processing of the structure where the ground wire is bent and embedded into the receiving channel. Furthermore, a groove-shaped notch is provided at the end of the signal terminal, narrowing the end of the first weld portion away from the insulating shell. Since there is a gap between the end of the first weld portion and the shielding layer, the signal conductor is exposed at this gap, creating a high point in characteristic impedance. By narrowing the structure, the characteristic impedance at the end of the first weld portion is increased, resulting in a smoother fluctuation in characteristic impedance at the gap, thereby improving the integrity of signal transmission.

[0038] 5. The overflow tray collects the solder that overflows during soldering, preventing short circuits between signal terminals or between signal terminals and ground terminals caused by solder. The overflow tray contains the overflowing solder, ensuring soldering quality and improving the soldering yield.

[0039] 6. The fixing part is welded to the second welding part. The bending part is bent at a certain angle to the fixing part. Therefore, when welding the fixing part and the second welding part, the bending part will have a certain guiding effect on the overflowing solder. By dividing the receiving channel into a near ground section and a far ground section, the width of the near ground section is greater than the width of the far ground section in the third direction. This increases the amount of solder that can be accommodated at the bending part of the receiving channel corresponding to the ground wire, thereby solving the influence of the bending part on the solder flow and reducing the risk of the overflowing solder from the ground conductor flowing through the receiving channel to the opposite side of the support platform and making contact with the signal conductor, thus ensuring the welding quality. Furthermore, since the width of the near ground section is greater than the width of the far ground section, a blocking surface is formed at the end of the far ground section near the near ground section. The blocking surface can effectively prevent the solder on the side wall of the near ground section from flowing into the far ground section, thereby preventing the first side and the second side from being connected by solder and improving the welding quality.

[0040] 7. By creating a depth difference in the near-ground section and the far-ground section in the first direction, a depth difference with varying heights is formed in the receiving channel in the first direction. When the liquid solder flows to the depth difference, due to the surface tension of the solder, it will accumulate at the depth difference and be difficult to continue flowing. This increases the resistance of the solder at the junction of the near-ground section and the far-ground section, prevents the first side and the second side from being connected by the solder, and improves the soldering quality.

[0041] 8. By setting inclined guide surfaces on both sides of the far section, the inclined guide surfaces on both sides are inclined with the spacing gradually increasing from the direction closer to the insulating shell to the direction farther away from the insulating shell, making it easier for the bent part to be embedded into the receiving groove, thereby improving the assembly efficiency.

[0042] 9. By bending the exposed end of the ground wire outside the shielding layer and embedding it into the receiving channel, the distance between the shielding layer and the support platform is 0.1 mm to 0.24 mm, which greatly improves the electromagnetic shielding effect of the welding area. In the field of high-frequency transmission, controlling the distance between the shielding layer and the support platform to 0.1 mm to 0.24 mm can reduce crosstalk of high-frequency signals in the welding area and ensure the stability of high-frequency signal transmission. [Attached Image Description]

[0043] Figure 1 This is a schematic diagram of the cable connector according to the first embodiment of the present invention;

[0044] Figure 2 for Figure 1 An enlarged view of part A in the middle circle;

[0045] Figure 3 for Figure 1 Cross-sectional view at position AA;

[0046] Figure 4 for Figure 1 Cross-sectional view at position BB;

[0047] Figure 5 for Figure 1 Exploded view of the cable connector;

[0048] Figure 6 for Figure 1 Cross-sectional view of the cable connector;

[0049] Figure 7 for Figure 1 A schematic diagram of the structure hidden behind the metal casing and cables;

[0050] Figure 8 for Figure 7 An enlarged view of section B in the middle circle;

[0051] Figure 9 for Figure 7 A structural diagram from another perspective showing the hidden metal casing and cables;

[0052] Figure 10 for Figure 7 Schematic diagram of the structure of the intermediate signal terminal;

[0053] Figure 11 for Figure 1 Schematic diagram of the structure of the cable;

[0054] Figure 12 A schematic diagram of the test results for the signal terminal SCD21, which does not have a contraction section in the prior art;

[0055] Figure 13This is a schematic diagram of the test results of the signal terminal SCD21 after the contraction section is set in this embodiment.

[0056] Explanation of reference numerals in the accompanying drawings for specific embodiments:

[0057]

[0058] [Specific Implementation Examples]

[0059] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0060] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0064] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0065] It should be noted that, according to Figures 1 to 11 As shown, in this embodiment of the invention, the X-axis, Y-axis, and Z-axis intersect each other in pairs. For ease of explanation, the first direction is defined as the X-axis, the second direction as the Y-axis, and the third direction as the Z-axis. In this embodiment, the X-axis and Y-axis are coplanar and perpendicular to each other, and the Z-axis is perpendicular to the common plane of the X and Y axes. The first, second, and third directions are mutually perpendicular. Further explanation: the term "perpendicular" in this application includes not only absolute perpendicularity but also approximately perpendicularity as commonly understood in engineering, such as "perpendicular" referring to an angle of 89° to 91° formed by two lines, a line and a plane, or a plane and a plane. Equal distances or equal angles include not only absolute equality but also approximately equality as commonly understood in engineering, meaning there may be some error, such as a tolerance range of -1% to 1%.

[0066] Please see Figures 1 to 11The cable connector 100, as described in the first embodiment of the present invention, is used for mating with an adapter board connector to transmit signals between the cable connector 100 and the adapter board connector. The cable connector 100 includes an insulating base 1, a first terminal block 2C and a second terminal block 2D passing through the insulating base 1 in a first direction, a metal shell 3 covering the insulating base 1, and a cable 4 electrically connecting the first terminal block 2C and the second terminal block 2D. The insulating base 1 supports and fixes the first terminal block 2C and the second terminal block 2D. The insulating base 1 has an exposed support platform 14, which has a first side 141 and a second side 142 facing each other in a second direction. The first terminal block 2C and the second terminal block 2D are respectively arranged on the first side 141 and the second side 142 of the support platform 14. A portion of the first terminal block 2C is exposed on the first side 141, and a portion of the second terminal block 2D is exposed on the second side 142. The exposed areas of the first terminal block 2C and the second terminal block 2D are used for electrical connection with the cable 4. The first terminal block 2C and the second terminal block 2D each include at least one signal terminal 21 and a grounding terminal 22 arranged on one side of the signal terminal 21; the signal terminal 21 is provided with a first welding part 214 at one end near the support platform 14, and the grounding terminal 22 is provided with a second welding part 221 at one end near the support platform 14; the first welding part 214 and the second welding part 221 of the first terminal block 2C are exposed on the first side 141 of the support platform 14, and the first welding part 214 and the second welding part 221 of the second terminal block 2D are exposed on the second side 142 of the support platform 14. The second welding portion 221 of the first terminal block 2C and the second welding portion 221 of the second terminal block 2D are misaligned. This misalignment means that, viewed along the second direction, the projections of the second welding portion 221 in the first terminal block 2C and the second welding portion 221 in the second terminal block 2D do not coincide. The projections of the second welding portion 221 in the first terminal block 2C and the second welding portion 221 in the second terminal block 2D are spaced apart in the third direction. The support platform 14 has multiple receiving channels 15 extending through the first terminal block 2C and the second terminal block 2D along the second direction. The ends of the multiple second welding portions 221 of the first terminal block 2C and the second terminal block 2D are respectively exposed in the multiple receiving channels 15.

[0067] The cable 4 includes an outer sheath 41 and at least two core wire groups 42 located within the outer sheath 41. Each core wire group 42 includes a signal wire, a ground wire, a shielding layer 423 wrapped around the signal wire and ground wire, and an insulating layer 424 wrapped around the shielding layer 423. One end of the signal wire is exposed outside the shielding layer 423 and the insulating layer 424 to form a signal conductor 421, and one end of the ground wire is exposed outside the shielding layer 423 and the insulating layer 424 to form a grounding conductor 422. The signal conductor 421 and the grounding conductor 422 of the same core wire group 42 are respectively connected to the first side 141 and the second side 142 of the support platform 14. Specifically, the signal conductor 421 of the same core wire group 42 is electrically connected to a first solder joint 214 located on the first side 141 or the second side 142 of the support platform 14, and the grounding conductor 422 is bent into one of the receiving channels 15 and electrically connected to a second solder joint 221 located on the second side 142 or the first side 141 of the support platform 14. By bending the grounding conductor 422 and embedding it into the receiving channel 15 when it crosses the support platform 14, the grounding conductor 422 is embedded between adjacent signal terminals 21 and between the first terminal block 2C and the second terminal block 2D. The grounding conductor 422 is electrically connected to the grounding terminal 22, which improves the electromagnetic shielding effect between adjacent signal terminals 21 and between the first terminal block 2C and the second terminal block 2D, reduces the electromagnetic interference received by the signal during transmission, thereby reducing crosstalk and ensuring the stability of high-frequency signal transmission.

[0068] Further, please refer to Figures 1 to 6 The insulating base 1 includes an insulating shell 11, a first insulating block 12 and a second insulating block 13 assembled within the insulating shell 11. Further, the insulating shell 11 has a hollow annular structure, and an inner cavity 115 is provided within the insulating shell 11. The inner cavity 115 extends through both sides of the insulating shell 11 along a first direction. One end of the inner cavity 115 is used for inserting the first insulating block 12 and the second insulating block 13, and the other end is used for inserting an external adapter board connector. Thus, the first terminal block 2C and the second terminal block 2D are connected to the adapter board connector within the inner cavity 115, ensuring signal transmission. In this embodiment, the insulating shell 11 is an integrally injection-molded structure.

[0069] Furthermore, the first insulating block 12 and the second insulating block 13 are joined together along the second direction. The joined first insulating block 12 and the second insulating block 13 are inserted into the inner cavity 115 along the first direction. A limiting groove 135 is formed at the joint position of the first insulating block 12 and the second insulating block 13. The limiting groove 135 is groove-shaped and is disposed at one end of the first insulating block 12 and the second insulating block 13 inserted into the inner cavity 115. The insulating shell 11 is provided with a limiting strip 111. The limiting strip 111 is elongated and extends in a third direction. Both ends of the limiting strip 111 are fixedly connected to the inner wall of the inner cavity 115. The limiting strip 111 is inserted into the limiting groove 135. The limiting strip 111 abuts against the first insulating block 12 and / or the second insulating block 13 in the first direction. Since the first insulating block 12 and the second insulating block 13 cooperate with each other, the limiting strip 111 can stop the movement of the first insulating block 12 and the second insulating block 13 by abutting against one of them. It can be understood that the limiting strip 111 can also stop the movement by abutting against the first insulating block 12 and the second insulating block 13 at the same time. Here, the method by which the limiting strip 111 stops the first insulating block 12 and the second insulating block 13 in the first direction is not restricted. It is sufficient to ensure that the limiting strip 111 can stop and position the installation position of the first insulating block 12 and the second insulating block 13 in the first direction. The limiting strip 111 is supported between the first insulating block 12 and the second insulating block 13 in the second direction, so that the limiting strip 111 simultaneously stops and limits the first insulating block 12 and the second insulating block 13 in the first and second directions, ensuring the assembly accuracy of the first insulating block 12 and the second insulating block 13. At the same time, the limiting strip 111 achieves simultaneous limiting in two directions with one component, which makes the structure simpler and reduces the processing cost.

[0070] Further, please refer to Figures 1 to 9The first insulating block 12 wraps around the outside of the first terminal block 2C, and the second insulating block 13 wraps around the outside of the second terminal block 2D. The first insulating block 12 is used to support and fix the first terminal block 2C, and the second insulating block 13 is used to support and fix the second terminal block 2D. The first terminal block 2C and the second terminal block 2D respectively pass through the first insulating block 12 and the second insulating block 13 along the first direction and then protrude into the inner cavity 115. The parts of the first terminal block 2C and the second terminal block 2D that protrude into the inner cavity 115 are used to electrically connect with the adapter board connector to ensure signal transmission between the cable connector 100 and the adapter board connector. In this embodiment, the first insulating block 12 and the second insulating block 13 are partially inserted into the inner cavity 115, and the other part of the first insulating block 12 and the second insulating block 13 is exposed outside the insulating shell 11. The support platform 14 is formed by splicing the exposed parts of the first insulating block 12 and the second insulating block 13 outside the insulating shell 11. The support platform 14 is located on the side of the insulating base 1 away from the metal shell 3. The support platform 14 is elongated and extends along a third direction. The support platform 14 has a first side 141 and a second side 142 opposite to each other in a second direction. The first welding part 214 and the second welding part 221 of the first terminal block 2C are exposed on the first side 141, and the first welding part 214 and the second welding part 221 of the second terminal block 2D are exposed on the second side 142. The first side 141 and the second side 142 are used for welding the exposed first welding part 214 and the second welding part 221 of the core wire group 42.

[0071] Furthermore, the receiving channel 15 is disposed on the side of the support platform 14 away from the insulating shell 11. The receiving channel 15 is recessed into the support platform 14 in a first direction and passes through the first side 141 and the second side 142 on both sides in a second direction. The signal wires of the same core wire group 42 are connected to the signal terminals 21 located on the first side 141 or the second side 142. The ground wires of the same core wire group 42 are connected to the ground terminals 22 located on the second side 142 or the first side 141, so that the signal conductor 421 and the ground conductor 422 are respectively connected to the first side 141 and the second side 142. When the ground conductor 422 of the ground wire extends from one side across the support platform 14 to the other side, the ground conductor 422 can be embedded in the receiving groove 15 in the first direction when it bends across the support platform 14, reducing the distance occupied by the ground conductor 422 between the support platform 14 and the shielding layer 423. This reduces the distance between the shielding layer 423 and the support platform 14, reduces the length of the signal wire exposed outside the shielding layer 423, improves the electromagnetic shielding effect of the soldering area, reduces the electromagnetic interference received by the signal during transmission, and thus reduces crosstalk and ensures the stability of high-frequency signal transmission.

[0072] Furthermore, the receiving channel 15 includes a near-ground section 151 and a far-ground section 152. The near-ground section 151 is located at one end of the receiving channel 15 near the second welding portion 221 of the ground wire, and the far-ground section 152 is located at one end of the receiving channel 15 away from the second welding portion 221 of the ground wire. The near-ground section 151 and the far-ground section 152 are connected, and both the near-ground section 151 and the far-ground section 152 extend in a strip-shaped groove along the second direction, forming the receiving channel 15. In this embodiment, in the third direction, the width of the near-ground section 151 is greater than the width of the far-ground section 152. Since the near-ground section 151 is located near the welding position of the ground conductor 422 and the second welding part 221, and the ground conductor 422 is bent and welded to the second welding part 221, the solder will melt into a liquid state and become fluid during the welding process. The bend of the ground conductor 422 has a guiding effect on the liquid solder. By making the width of the near-ground section 151 greater than the width of the far-ground section 152, the solder capacity at the bend of the ground wire in the receiving channel 15 is increased, which solves the influence of the bend of the ground conductor 422 on the solder flow and reduces the risk of the molten solder overflowing from the ground conductor 422 flowing through the receiving channel 15 to the signal conductor 421 on the other side, thereby improving the welding quality. Furthermore, the width of the near-ground section 151 is greater than the width of the far-ground section 152, resulting in a smaller gap between the two side walls of the far-ground section 152 in the third direction. Consequently, a blocking surface 156 is formed at the end of the far-ground section 152 near the near-ground section 151. This blocking surface 156 is parallel to the common plane of the first direction and the third direction. The blocking surface 156 is used to block the liquid solder flowing from the near-ground section 151 to the far-ground section 152, thereby preventing the first side 141 and the second side 142 on both sides from being connected by the solder, and ensuring the soldering quality.

[0073] Furthermore, on the common surface of the second and third directions, the centerline of the far ground section 152 is collinear with the centerline of the near ground section 151. The two sides of the far ground section 152 are closer to the centerline than the two sides of the near ground section 151, ensuring that the blocking surfaces 156 on both sides of the far ground section 152 are symmetrically and centrally distributed. Therefore, the blocking of molten solder on both sides of the near ground section 151 is more uniform, improving the blocking effect of molten solder and further improving the soldering quality.

[0074] Furthermore, in the first direction, the depth of the recess in the near-ground section 151 is not equal to the depth of the recess in the far-ground section 152, so that the bottom surfaces of the near-ground section 151 and the far-ground section 152 are staggered in the first direction. Because of the difference in the depth of the recess between the near-ground section 151 and the far-ground section 152, a depth difference exists at the junction of the near-ground section 151 and the far-ground section 152. During the flow of the solder along the bottom surface of the receiving channel 15, when the liquid solder flows through the depth difference location, two situations may occur: when the liquid solder flows from the lower surface to the higher surface, it will be directly blocked and unable to continue flowing; while when the liquid solder flows from the higher surface to the lower surface, under the action of the surface tension of the solder, the liquid solder will accumulate at the depth difference location and will be difficult to continue flowing. Both situations would prevent the liquid solder from flowing smoothly along the bottom surface of the receiving channel 15. Therefore, the different depths of the recesses in the near-ground section 151 and the far-ground section 152 increase the resistance of the solder at the junction of the near-ground section 151 and the far-ground section 152, preventing the first side 141 and the second side 142 from being connected by the solder, thus ensuring soldering quality. In this embodiment, the two side walls of the far-ground section 152 are provided with inclined guide surfaces 155. The inclined guide surfaces 155 on both sides are located on the side of the far-ground section 152 closest to the cable 4, and the spacing between the inclined guide surfaces 155 gradually increases along the direction close to the cable 4, forming an inclined arrangement. This allows the bends of the grounding conductor 422 to be more easily embedded into the receiving channel 15 through the inclined guide surfaces 155 during installation, thereby improving installation efficiency.

[0075] Furthermore, one of the near-ground section 151 and the far-ground section 152 of the same accommodating channel 15 is disposed on the first insulating block 12, and the other is disposed on the second insulating block 13. Since the width and depth dimensions of the near-ground section 151 and the far-ground section 152 are different, by setting the near-ground section 151 and the far-ground section 152 of different sizes on the first insulating block 12 and the second insulating block 13 respectively, it is ensured that when processing the accommodating channel 15 with varying width and thickness dimensions, through slots with constant width and thickness dimensions can be processed on the first insulating block 12 and the second insulating block 13 respectively, and then the two through slots are joined together to obtain the accommodating channel 15 with varying dimensions. This reduces the processing difficulty of the accommodating channel 15, improves the processing efficiency of the accommodating channel 15 with varying dimensions, and reduces processing costs.

[0076] Furthermore, the support platform 14 is provided with at least two overflow grooves 16. The overflow grooves 16 are strip-shaped grooves extending along the first direction. The overflow grooves 16 are provided on the first side 141 and the second side 142 on both sides of the support platform 14. Multiple overflow grooves 16 are arranged opposite to each other on both sides of the first welding part 214 and / or the second welding part 221. Each overflow groove 16 is connected to the corresponding receiving channel 15. The overflow grooves 16 are used to receive the solder overflowing from the first welding part 214 and / or the second welding part 221 during the welding process. By receiving the overflowing solder, the overflowing solder is prevented from conducting through adjacent terminals on the same side, affecting the normal use of the cable connector 100, and ensuring the welding quality. Furthermore, by connecting the overflow grooves 16 with the receiving channel 15, the capacity of the overflow grooves 16 to hold solder is increased, further ensuring the welding quality and improving the welding yield.

[0077] Furthermore, the signal terminals 21 on the first terminal block 2C are differential signal terminals, and the signal terminals 21 on the second terminal block 2D are also differential signal terminals. The signal terminals on the first terminal block 2C are arranged in pairs, and the signal terminals 21 on the second terminal block 2D are also arranged in pairs. That is, a pair of signal terminals 21 is arranged between two adjacent ground terminals 22 on each of the first and second terminal blocks 2C. The two signal terminals 21 form a pair to transmit differential signals. Differential signals refer to signals transmitted in the two signal terminals 21 with opposite phases. The signal receiving end takes the difference between the signals with opposite phases to cancel out external interference, thereby ensuring the integrity of high-frequency signal transmission. The ground terminal 22 is arranged on one side of the pair of signal terminals 21, and this ground terminal 22 shields the electromagnetic interference between adjacent pairs of signal terminals 21. In this embodiment, both the first terminal block 2C and the second terminal block 2D include two pairs of signal terminals 21 and multiple other functional terminals. Understandably, the signal terminal 21 can also be a single-ended signal terminal. The signal terminal 21 is arranged individually, meaning that one signal terminal 21 is arranged between two adjacent grounding terminals 22 on each of the first terminal block 2C and the second terminal block 2D. Each signal terminal 21 independently transmits a single-ended signal. In this case, the grounding terminal 22 shields the electromagnetic interference between two adjacent signal terminals 21. When transmitting differential signals, the signal terminals 21 are arranged in pairs; when transmitting single-ended signals, the signal terminals 21 are arranged independently. Both arrangements fall within the scope of this invention. This embodiment describes the transmission of differential signals with a more complex arrangement as an example. The single-ended arrangement will not be elaborated further; it is sufficient to ensure that the grounding conductor 422 is bent and embedded in the corresponding receiving groove 15.

[0078] Furthermore, when transmitting differential signals, since a pair of signal terminals 21 consists of two parallel signal terminals 21, and both signal terminals 21 are provided with a first soldering part 214, a pair of signal terminals 21 includes two first soldering parts 214. The end of the pair of signal terminals 21 away from the first soldering part 214 passes through the first insulating block 12 or the second insulating block 13 and then protrudes into the inner cavity 115 to ensure that when the external adapter board connector is inserted into the inner cavity 115, it contacts and conducts with the pair of signal terminals 21. The first soldering part 214 is elongated and extends along the first direction. One side of the first soldering part 214 in the second direction is exposed on the first side 141 or the second side 142 for soldering and conducting with the cable 4. The second welding part 221 is located at one end of the grounding terminal 22. The end of the grounding terminal 22 away from the second welding part 221 passes through the first insulating block 12 or the second insulating block 13 and protrudes into the inner cavity 115. The grounding terminal 22 and a pair of signal terminals 21 are arranged side by side in the same direction. The part of the grounding terminal 22 protruding into the inner cavity 115 is used to contact and conduct the adapter plug inserted into the inner cavity 115. The grounding terminal 22 is used to shield the electromagnetic interference between two adjacent pairs of signal terminals 21 on the same side, ensuring the stability of the high-frequency signal transmission of a pair of signal terminals 21. The grounding conductor 422 is bent and crosses the support platform 14 to be electrically connected to the grounding terminal 22, shielding the electromagnetic interference between the first terminal block 2C and the second terminal block 2D, further ensuring the stability of signal transmission. The second welding portion 221 extends in a long strip along the first direction. One side of the second welding portion 221 is exposed on the first side 141 or the second side 142 in the second direction for welding and conducting with the cable 4. By welding both the pair of signal terminals 21 and the ground terminal 22 to the cable 4 for conduction, the transmission of signals by the cable connector 100 is guaranteed. Specifically, viewed in the projection along the second direction, the projection of the second welding portion 221 of the first terminal block 2C is located between the two first welding portions 214 of the pair of signal terminals 21 of the second terminal block 2D, and the projection of the second welding portion 221 of the second terminal block 2D is located between the two first welding portions 214 of the pair of signal terminals 21 of the first terminal block 2C. In this embodiment, the grounding terminal 22 is aligned with the receiving channel 15, and the end of the second welding part 221 away from the insulating shell 11 is exposed in the receiving channel 15. This ensures that the grounding conductor 422 can be directly connected to the grounding terminal 22 after passing through the receiving channel 15, without needing to extend a certain distance before connecting to the second welding part 221. This reduces the wire loss of the grounding conductor 422 and lowers the cost.

[0079] Furthermore, in the second direction, the distance between the first solder portion 214 of the first terminal block 2C and the first solder portion 214 of the second terminal block 2D is 1.55 mm to 1.8 mm. The solder spacing between the two rows of terminals in existing high-frequency connectors is typically 0.9 mm to 1.1 mm. In this embodiment, by increasing the distance between the first solder portion 214 of the first terminal block 2C and the first solder portion 214 of the second terminal block 2D to 1.55 mm to 1.8 mm, crosstalk between a pair of signal terminals 21 of the first terminal block 2C and a pair of signal terminals 21 of the second terminal block 2D is reduced, thereby improving the stability of high-frequency signal transmission. Testing revealed that a larger distance between the first welded portion 214 of the first terminal block 2C and the first welded portion 214 of the second terminal block 2D is not necessarily better. This is because a larger distance between the first welded portion 214 of the first terminal block 2C and the first welded portion 214 of the second terminal block 2D requires a larger support platform 14, which in turn requires a larger dielectric layer. A larger dielectric layer thickness can affect the quality and stability of signal transmission, easily leading to signal timing errors and an increased bit error rate, especially in high-frequency signal transmission. Furthermore, since the electric field is more densely distributed in materials with a higher dielectric constant, an increased dielectric layer thickness makes the electric field distribution even denser, resulting in increased crosstalk. Therefore, after extensive testing, it was determined that the preferred distance between the first welded portion 214 of the first terminal block 2C and the first welded portion 214 of the second terminal block 2D is 1.55 mm to 1.8 mm, within which the crosstalk effect is minimized.

[0080] Furthermore, in the first direction, the length of the first welding part 214 is greater than the length of the second welding part 221, so that the first welding part 214 of a pair of signal terminals 21 and the second welding part 221 of the ground terminal 22 are staggered in the first direction. During welding, the staggered arrangement of the first welding part 214 and the second welding part 221 in the first direction can quickly identify and distinguish the first welding part 214 and the second welding part 221, thereby ensuring the rapid identification of the position of the ground terminal 22 and improving wiring efficiency and assembly efficiency.

[0081] Furthermore, the number of receiving channels 15 is multiple, and the number of receiving channels 15 is equal to the total number of grounding terminals 22 arranged on the first terminal block 2C and the second terminal block 2D. The multiple receiving channels 15 are respectively arranged between the two first welding portions 214 of each pair of signal terminals 21. A notch 215 is provided at the end of the first welding part 214 away from the insulating shell 11. The notch 215 is groove-shaped and located on the side of the first welding part 214 near the receiving channel 15. The notch 215 is used to avoid the position of the receiving channel 15, thereby preventing the first welding part 214 from protruding into the receiving channel 15 and contacting the grounding conductor 422 for conduction, thus improving the yield rate of processing. In addition, the ends of the pair of signal terminals 21 are provided with groove-shaped notches 215, so that the end of the first welding part 214 forms a narrowing structure. Since there is a gap between the end of the first welding part 214 and the shielding layer 423, the signal conductor 421 is exposed at the gap position, forming a characteristic impedance spike point. By narrowing the structure, the characteristic impedance at the end position of the first welding part 214 is increased, so that the fluctuation change of characteristic impedance at the gap position is smoother, thereby improving the integrity of signal transmission.

[0082] Furthermore, the metal shell 3 is arranged around the outside of the insulating shell 11. The metal shell 3 is made of a metal plate bent into a ring structure and fitted onto the outside of the insulating shell 11. The metal shell 3 is used to shield the electromagnetic interference received in the inner cavity 115 area to ensure the stability of signal transmission. In this embodiment, a buckle 31 is provided at one end of the metal shell 3 near the support platform 14. The insulating seat 1 is inserted into the metal shell 3 along the first direction. A slot 17 is opened on the insulating seat 1 corresponding to the buckle 31. The buckle 31 is bent into the slot 17 to lock and fix the metal shell 3 and the insulating seat 1. Furthermore, a raised rib 18 is provided on the outer side of the insulating base 1. The raised rib 18 is elongated and extends along the first direction. The raised rib 18 abuts against the inner side of the metal shell 3. The raised rib 18 supports the metal shell 3 between the insulating base 1, so that a certain gap is formed between the metal shell 3 and the insulating base 1. This ensures that when the metal shell 3 is plugged into the compatible board end connector, it can generate a certain elastic deformation, thereby improving the tightness of the fit with the compatible board end connector.

[0083] Further, please refer to Figures 1 to 5 , Figure 11The outer sheath 41 is disposed on the outermost layer of the cable 4, and is used to protect the internal core wire groups 42. In this embodiment, the same core wire group 42 includes two signal lines and one ground line. The two signal lines are electrically connected to the two first solder joints 214 of a pair of signal terminals 21, and the ground line is electrically connected to the second solder joint 221 of the grounding terminal 22. The grounding conductor 422 of the ground wire in the same core wire group 42 is located at the center between the signal conductors 421 of the two signal lines in the third direction. There are multiple core wire groups 42, with at least two core wire groups 42 arranged in parallel at intervals along the third direction. The grounding conductors 422 of each core wire group 42 are alternately arranged on the first side 141 and the second side 142 on both sides. That is, the two signal conductors 421 of the core wire group 42 are located on the first side 141 or the second side 142 on the same side, and the grounding conductor 422 of the same core wire group 42 is located on the second side 141 on the other side. On the first side 141 or 42, the two signal conductors 421 and one ground conductor 422 of the same core wire group 42 are arranged in an isosceles triangle shape. The ground conductors 422 of each core wire group 42 are alternately arranged on the first side 141 and the second side 142, so that the core wire groups 42 arranged in an isosceles triangle shape are alternately flipped. This can save the space occupied by each core wire group 42 in the third direction, thereby reducing the width of the cable connector 100 in the third direction, which is conducive to the miniaturization and high frequency design of the cable connector 100. Understandably, the number of core wire groups 42 is equal to the total number of signal terminal pairs 21 arranged on the first terminal block 2C and the second terminal block 2D. The two first soldering parts 214 of each pair of signal terminals 21 are arranged corresponding to the two signal conductors 421 of each core wire group 42. The second soldering parts 221 of each grounding terminal 22 are arranged corresponding to the grounding conductors 422 of each core wire group 42. That is, the second soldering parts 221 on the first side 141 and the second side 142 on one side are arranged between the two first soldering parts 214 on the first side 141 and the second side 142 on the other side. Furthermore, the number of core wire groups 42 can be two, three, four, five, six, or seven. The number of core wire groups 42 is equal to the total number of signal terminal 21 pairs arranged on the first terminal block 2C and the second terminal block 2D. Customers can select the number of signal terminal 21 pairs and core wire groups 42 according to actual usage requirements, ensuring that at least one pair of signal terminals 21 and one grounding terminal 22 are arranged on both the first terminal block 2C and the second terminal block 2D, so that the signal conductor 421 of the core wire group 42 can be connected to the first soldering part 214 on the first side 141 or the second side 142 on one side, and the grounding conductor 422 of the same core wire group 42 can be connected to the second soldering part 221 on the second side 142 or the first side 141 on the other side by crossing the support platform 14.

[0084] Furthermore, the signal conductor 421 extends linearly along the first direction; the grounding conductor 422 includes a bent portion 4221 and a fixing portion 4222. The bent portion 4221 extends in a strip shape along the second direction and is embedded in the receiving groove 15. The bent portion 4221 is electrically coupled to the end of the second welding portion 221. The electrical coupling is divided into two cases: the first case is that the bent portion 4221 and the end of the second welding portion 221 are in direct contact for electrical signal transmission; the second case is that the distance between the bent portion 4221 and the end of the second welding portion 221 is close but there is a... During the gap, when one of the bending part 4221 and the second welding part 221 transmits a high-frequency signal, an electromagnetic induction signal will be generated in the other component, thereby realizing intermittent electrical coupling between the ends of the bending part 4221 and the second welding part 221 for signal transmission; the fixing part 4222 extends in a strip shape along the first direction, and extends from the bending part 4221 to the corresponding second welding part 221 along the first direction and is welded and fixed to the second welding part 221. The fixing part 4222 and the corresponding second welding part 221 transmit signals in direct contact. Through the electrical coupling between the bent portion 4221 and the end of the second welding portion 221, the fixing portion 4222 and the second welding portion 221 are in direct contact and conduction, thereby improving the path and area for high-frequency signal transmission and thus improving the high-frequency signal transmission effect. Furthermore, by embedding the bent portion 4221 into the receiving channel 15, the space occupied by the grounding conductor 422 in the first direction between the shielding layer 423 and the support platform 14 is reduced, thereby reducing the distance between the shielding layer 423 and the support platform 14. The smaller the distance between the shielding layer 423 and the support platform 14, the more completely the shielding layer 423 wraps the signal line and ground line, reducing electromagnetic interference and crosstalk during signal transmission. In this embodiment, by embedding the bent portion 4221 into the receiving channel 15, the minimum distance between the shielding layer 423 and the end of the first welding portion 214 is D1, where 0.1mm ≤ D1 ≤ 0.24mm, meaning the minimum distance between the shielding layer 423 and the end of the first welding portion 214 is between 0.1 mm and 0.24 mm. Preferably, the minimum distance between the shielding layer 423 and the end of the first welding part 214 is 0.1 mm to 0.149 mm. The smaller the distance between the shielding layer 423 and the end of the first welding part 214, the better the electromagnetic shielding effect. However, it is not necessarily the case that the smaller the distance between the shielding layer 423 and the end of the first welding part 214, the better. If the distance between the shielding layer 423 and the end of the first welding part 214 is too small, the insulating layer 424 will shrink and deform during welding on the support platform 14. The shrinkage and deformation of the insulating layer 424 will affect the post-welding process and affect the yield. Therefore, after testing, the preferred distance range between the shielding layer 423 and the end of the first welding part 214 is 0.1 mm to 0.149 mm.

[0085] Furthermore, the shielding layer 423 is made of aluminum foil and covers the outside of the signal line and ground line to shield them from electromagnetic interference from the outside, thereby ensuring the stability of signal transmission of the cable 4. The insulating layer 424 covers the outside of the shielding layer 423 to protect the shielding layer 423 and prevent the connection between the core wire groups 42, ensuring stable signal transmission. Specifically, when the core wire group 42 is soldered to a pair of signal terminals 21 and ground terminals 22, one end of the insulating layer 424 and the shielding layer 423 is cut off first. The cut end of the insulating layer 424 and the shielding layer 423 are flush to form a cut. The part of the signal line that passes through the cut is exposed on the outside of the shielding layer 423 to form a signal conductor 421. The signal conductor 421 is used to solder and fix it to the first soldering part 214. The part of the ground line that passes through the cut is exposed on the outside of the shielding layer 423 to form a grounding conductor 422. The grounding conductor 422 is used to solder and fix it to the second soldering part 221. In this embodiment, the ends of the insulating layer 424 and the shielding layer 423 are cut by laser cutting, which can improve dimensional accuracy. Understandably, the ends of the insulating layer 424 and the shielding layer 423 can also be cut by stamping. Here, the specific end cutting method of the shielding layer 423 and the insulating layer 424 is not limited. As long as the cut is flush, the ends of the signal line and the ground line can be exposed to form the signal conductor 421 and the ground conductor 422.

[0086] Further, please refer to Figures 7 to 10The signal terminal 21 includes a contact portion 211, a bent portion 212, an extension portion 213, and a first solder portion 214 connected sequentially along a first direction. The contact portion 211 and the bent portion 212 are exposed within the inner cavity 115, and the extension portion 213 is at least partially embedded within the first insulating block 12 or the second insulating block 13. The extension portion 213 includes a contracted section 2135 connecting the bent portion 212, an embedded section 2131 connecting the contracted section 2135 away from the bent portion 212, and an exposed section 2132 connecting the first embedded section 2131 away from the bent portion 212. The contracted section 2135 and the embedded section 2131 are embedded together within the insulating material of the first insulating block 12 or the second insulating block 13. An opening is provided in the first insulating block 12 or the second insulating block 13 at the position corresponding to the exposed section 2132, allowing the exposed section 2132 to be exposed within the corresponding opening in the first insulating block 12 or the second insulating block 13. In this embodiment, the end of the bent portion 212 furthest from the contact portion 211 is inserted into the insulating material. This insertion is due to the injection molding process. Since the end of the bent portion 212 furthest from the contact portion 211 corresponds to the adjacent insulating material surface, during the transmission of the electrical signal from the bent portion 212 to the extension portion 213, the medium changes from air to the insulating material, increasing the dielectric constant and decreasing the characteristic impedance. To balance the characteristic impedance, the portion embedded in the insulating material needs to be narrowed to increase the characteristic impedance. To reduce the fluctuation of the characteristic impedance curve and improve the stability of high-frequency signal transmission, the width of the end of the bend 212 away from the contact 211 is greater than the width of the embedded section 2131. Therefore, a narrowed transition surface is provided at the end of the bend 212 near the embedded section 2131. However, the injection molding process limits the interface of the insulating material to be set on the transition surface with varying width. Therefore, it is necessary to insert one end of the bend 212 connected to the extension 213 into the insulating material, so that the insulating material will completely cover the transition surface with varying width. Furthermore, the width of the bent portion 212 away from the contact portion 211 in the third direction is B3, the width of the contracted section 2135 in the third direction is B4, the width of the embedded section 2131 in the third direction is B5, and the width of the exposed section 2132 in the third direction is B6; then B4 < B5, B5 < B3, B5 < B6; that is, in the third direction, the width of the contracted section 2135 is less than the width of the embedded section 2131, the width of the embedded section 2131 is less than the width of the bent portion 212 away from the contact portion 211, and the width of the embedded section 2131 is less than the width of the exposed section 2132.By embedding the section 2131 within the insulating material with a width smaller than the width of the exposed section 212 and the bent portion 2132 outside the insulating material, a primary narrowing is achieved to balance the characteristic impedance of the bent portion 212 and the exposed section 2132 exposed to air. Furthermore, by providing a contraction section 2135 connected to the bent portion 212, with a width smaller than the embedding section 2131, a secondary narrowing is achieved to locally increase the characteristic impedance at the point where the bent portion 212 is inserted into the insulating material. This addresses the issue of the insulating material encasing the bent portion 2132 during the injection molding process. The end position of section 2 causes a sudden drop in characteristic impedance at the initial position where the bent portion 212 penetrates the insulating material. This sudden drop in characteristic impedance is because the width of the bent portion 212 at the initial position where it is inserted into the insulating material remains relatively large, while the medium changes abruptly from air to insulating material. Under the combined effect of width and dielectric constant, the characteristic impedance drops suddenly. By further narrowing the already narrowed embedded section 2131 to form a secondary narrowing contraction section 2135, the fluctuation of characteristic impedance is balanced, ensuring the stability of high-frequency signal transmission.

[0087] Further, please refer to Figure 12 The figure shows the test results for the signal terminal SCD21, which lacks the contraction section 2135 in the prior art. SCD21 is a differential-to-common-mode test; the smaller the measured value of the differential-to-common-mode signal and the farther it is from the standard line, the better the signal transmission integrity. As can be seen from the figure, the differential-to-common-mode signal in the prior art at 7.46 GHz is -19.46, exceeding the standard line, thus failing to meet the standard requirements and resulting in poor signal integrity. Please refer to [link to relevant documentation]. Figure 13 The SCD21 test results of the signal terminal after setting the contraction section 2135 in this embodiment are from... Figure 13 As can be seen, the differential-to-common mode curves are all below the standard line in the 0 to 25 GHz range, meeting the standard requirements. This shows that by setting a contraction section 2135 between the elastic part 212 and the first embedded section 2131, the characteristic impedance is adjusted through secondary narrowing, which effectively improves the integrity of signal transmission.

[0088] Furthermore, please refer again. Figures 7 to 10The bending portion 212 includes a first lever arm segment 2121 connecting the contact portion 211 and a second lever arm segment 2122 connecting the first lever arm segment 2121. The second lever arm segment 2122 is located at the end of the bending portion 212 away from the contact portion 211. The width of the contact portion 211 in the third direction is B1, the width of the first lever arm segment 2121 in the third direction is B2, the width of the second lever arm segment 2122 in the third direction is B3, and the width of the first welded portion 214 in the third direction is B7. Then B1 < B7 < B3 < B2, B2 > 2B1. Since the first soldering part 214 is connected to the cable 4 and the contact part 211 abuts against the terminal of the adapter board connector, and the cable 4 has a shielding layer 423 with a lower characteristic impedance compared to the mating connector, the width of the first soldering part 214 is greater than the width of the contact part 211. This makes the characteristic impedance difference between the first soldering part 214 and the cable 4 smaller, and the characteristic impedance difference between the contact part 211 and the mating connector smaller, thus balancing the fluctuation of characteristic impedance. Since the thickness of the signal transmission doubles after the contact part 211 abuts against the terminal of the adapter board connector, the width of the first lever arm segment 2121 connected to the contact part 211 needs to be greater than the width of the contact part 211. Considering the deformation of the contact part 211 when it abuts against the terminal of the mating connector, the signal terminal 21 will be supported more gently, which is equivalent to increasing the cross-sectional area and reducing the characteristic impedance. The contact area between the supported signal terminal 21 and the terminal of the mating connector will also increase. Considering the electrical coupling, the width of the first lever arm segment 2121 needs to be more than twice the width of the contact part 211. By making the width of the second lever arm segment 2122 smaller than the width of the first lever arm segment 2121, the characteristic impedance is first increased before penetrating the first insulating block 12 or the second insulating block 13, thereby balancing the situation where the characteristic impedance will decrease when penetrating the first insulating block 12 or the second insulating block 13, making the overall fluctuation of the characteristic impedance more stable.

[0089] In summary, the present invention provides a cable connector 100, which has the following advantages compared with the prior art:

[0090] 1. By providing multiple receiving channels 15 through the support platform 14 between the first terminal block 2C and the second terminal block 2D along the second direction, and bending the grounding conductor 422 of the ground wire into one of the receiving channels 15 and electrically connecting it to the second welding part 221 located on the support platform 14, the ground wire can be bent and embedded in the receiving channel 15 when crossing from one side of the support platform 14 to the other side. This allows the grounding conductor 422 to be directly arranged on the side of the signal terminal 21, thereby improving the electromagnetic shielding effect between adjacent signal terminals 21, and also improving the electromagnetic shielding effect between the first terminal block 2C and the second terminal block 2D, reducing electromagnetic interference during signal transmission, reducing crosstalk, and ensuring the stability of high-frequency signal transmission. Furthermore, by embedding the grounding conductor 422 of the ground wire into the receiving groove 15 of the support platform 14, the space occupied by the grounding conductor 422 between the support platform 14 and the shielding layer 423 of the cable 4 is reduced, thereby reducing the exposed length of the signal line and ground wire between the shielding layer 423 and the support platform 14, improving the electromagnetic shielding effect of the welding area between the connector and the cable 4, further reducing the electromagnetic interference received during signal transmission, reducing crosstalk, and ensuring the stability of high-frequency signal transmission.

[0091] 2. The bent portion 4221 extends along the second direction and is embedded in the receiving channel 15. The fixing portion 4222 extends from the bent portion 4221 toward the second welding portion 221 along the first direction and is welded and fixed to the second welding portion 221. The ends of the bent portion 4221 and the second welding portion 221 are electrically coupled, enabling signal transmission between the fixing portion 4222 and the second welding portion 221 through direct contact. Even if there is a small gap between the ends of the bent portion 4221 and the second welding portion 221, signal transmission can still be achieved through electrical coupling, thereby increasing the signal transmission area and improving the high-frequency signal transmission effect. Furthermore, the bent portion 4221 extends in the second direction, thereby improving the electromagnetic shielding effect on the first terminal block 2C and the second terminal block 2D in the second direction. By embedding the bent portion 4221 into the receiving channel 15 and simultaneously extending the fixing portion 4222 along the first direction, the electromagnetic shielding effect between two adjacent pairs of signal terminals 21 in the first direction is improved, thereby reducing electromagnetic interference during signal transmission, reducing crosstalk, and ensuring the stability of high-frequency signal transmission.

[0092] 3. By making the length of the first welding part 214 greater than the length of the second welding part 221 in the first direction, the first welding part 214 and the second welding part 221 are arranged in a staggered manner in the first direction. When welding the core wire group 42 of the cable 4, the setting position of the second welding part 221 of the grounding terminal 22 can be clearly and easily identified quickly, thereby achieving rapid positioning during the welding wiring process and improving assembly efficiency.

[0093] 4. By providing a notch 215 at the end of the first welding portion 214 away from the insulating shell 11, and by setting the notch 215 in a groove shape on the side of the first welding portion 214 near the receiving channel 15, the first welding portion 214 is prevented from protruding into the receiving channel 15, which could damage the conduction between the signal terminal 21 and the ground wire. By providing a notch 215 on the side of the first welding portion 214 near the receiving channel 15 for clearance, the yield rate of the structure processing for bending and embedding the ground wire into the receiving channel 15 is ensured. Furthermore, a groove-shaped notch 215 is provided at the end of a pair of signal terminals 21, which narrows the end of the first welding portion 214 away from the insulating shell 11. Since there is a gap between the end of the first welding portion 214 and the shielding layer 423, the signal conductor 421 is exposed at the gap position, forming a characteristic impedance spike. By narrowing the structure, the characteristic impedance at the end position of the first welding portion 214 is increased, making the fluctuation of the characteristic impedance at the gap position smoother, thereby improving the integrity of signal transmission.

[0094] 5. The overflow trough 16 collects the solder that overflows during soldering, preventing short circuits caused by solder between signal terminals 21 or between signal terminal 21 and ground terminal 22. The overflow trough 16 contains the overflowing solder, ensuring soldering quality and improving the soldering yield.

[0095] 6. The fixing part 4222 is welded to the second welding part 221. The bending part 4221 and the fixing part 4222 are bent at a certain angle. Therefore, when welding the fixing part 4222 and the second welding part 221, the bending part 4221 will have a certain guiding effect on the overflowing solder. By dividing the receiving channel 15 into two parts, the near ground section 151 and the far ground section 152, the width of the near ground section 151 is greater than the width of the far ground section 152 in the third direction. This increases the amount of solder that the receiving channel 15 can hold at the ground wire bending part 4221, thereby solving the influence of the bending part 4221 on the solder flow and reducing the risk of the overflowing solder from the ground conductor 422 flowing through the receiving channel 15 to the opposite side of the support platform 14 and making contact with the signal conductor 421, thus ensuring the welding quality. Furthermore, since the width of the near-ground section 151 is greater than the width of the far-ground section 152, a blocking surface 156 will be formed at the end of the far-ground section 152 near the near-ground section 151. The blocking surface 156 can effectively prevent the solder on the side wall of the near-ground section 151 from flowing into the far-ground section 152, thereby preventing the first side 141 and the second side 142 from being connected by solder and improving the soldering quality.

[0096] 7. By making the depth of the depression in the near section 151 and the depth of the depression in the far section 152 in the first direction unequal, a depth difference with different heights is formed in the receiving channel 15 in the first direction. When the liquid solder flows to the depth difference, due to the surface tension of the solder, the solder will accumulate at the depth difference and will be difficult to continue flowing. This increases the resistance of the solder at the joint position of the near section 151 and the far section 152, prevents the first side 141 and the second side 142 from being connected by the solder, and improves the soldering quality.

[0097] 8. By providing inclined guide surfaces 155 on both sides of the far section 152, the inclined guide surfaces 155 on both sides are inclined in a manner with gradually increasing spacing from the direction close to the insulating shell 11 to the direction away from the insulating shell 11, making it easier for the bent part 4221 to be embedded in the receiving groove 15, thereby improving assembly efficiency.

[0098] 9. The limiting strip 111 blocks the first insulating block 12 and / or the second insulating block 13 in the first direction, while the limiting strip 111 supports the first insulating block 12 and the second insulating block 13 in the second direction. This makes the installation position of the first insulating block 12 and the second insulating block 13 simultaneously limited in the first and second directions by the limiting strip 111, which makes the structure simpler and saves production costs.

[0099] 10. By bending one end of the ground wire exposed on the outside of the shielding layer 423 and embedding it into the receiving groove 15, the distance between the shielding layer 423 and the support platform 14 is 0.1 mm to 0.24 mm, which greatly improves the electromagnetic shielding effect of the welding area. In the field of high-frequency transmission, controlling the distance between the shielding layer 423 and the support platform 14 to 0.1 mm to 0.24 mm can reduce crosstalk of high-frequency signals in the welding area and ensure the stability of high-frequency signal transmission.

[0100] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0101] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A cable connector having intersecting first and second directions, characterized in that, The cable connector includes: An insulating base, the insulating base having an exposed support platform, the support platform having opposing first and second sides in a second direction; A first terminal block and a second terminal block are provided, the first terminal block and the second terminal block passing through the insulating base along a first direction, the first terminal block and the second terminal block being respectively arranged on a first side and a second side of the support platform; each of the first terminal block and the second terminal block includes at least one signal terminal and a grounding terminal arranged on one side of the signal terminal; the signal terminal is provided with a first soldering part at one end near the support platform, and the grounding terminal is provided with a second soldering part at one end near the support platform; the first soldering part and the second soldering part of the first terminal block are exposed on the first side of the support platform, and the first soldering part and the second soldering part of the second terminal block are exposed on the second side of the support platform; the second soldering parts of the first terminal block and the second soldering parts of the second terminal block are staggered. A metal shell covers the insulating base; A cable electrically connects a first terminal block and a second terminal block; the cable includes an outer sheath and at least two core wire groups located within the outer sheath; each core wire group includes a signal wire, a ground wire, a shielding layer wrapped around the signal wire and the ground wire, and an insulating layer wrapped around the shielding layer; one end of the signal wire is exposed outside the shielding layer and the insulating layer to form a signal conductor, and one end of the ground wire is exposed outside the shielding layer and the insulating layer to form a grounding conductor; The support platform is provided with a plurality of receiving channels extending through the first terminal block and the second terminal block along a second direction. The ends of the plurality of second welding portions of the first terminal block and the second terminal block are respectively exposed in the plurality of receiving channels. The signal conductors of the same core wire group are electrically connected to the first welding portions located on the first side or the second side of the support platform, and the grounding conductor is bent into one of the receiving channels and electrically connected to the second welding portions located on the second side or the first side of the support platform.

2. The cable connector of claim 1, wherein, The signal conductor extends in a straight line along a first direction, and the grounding conductor includes a bent portion and a fixing portion; the bent portion extends in a strip shape along a second direction and is embedded in the receiving channel; the fixing portion extends from the bent portion toward the corresponding second welding portion along the first direction and is welded and fixed to the second welding portion; the ends of the bent portion and the corresponding second welding portion are electrically coupled.

3. The cable connector of claim 1, wherein, The cable connector has a third direction, and the first direction, the second direction, and the third direction intersect each other; The signal terminals on the first terminal block are differential signal terminals, and the signal terminals on the second terminal block are differential signal terminals. The ground terminal is arranged on one side of a pair of signal terminals. Each core wire group includes two signal lines and one ground wire; the grounding conductor of the ground wire in the same core wire group is located at the center between the signal conductors of the two signal lines in the third direction; the two signal conductors and one grounding conductor in the same core wire group are arranged in an isosceles triangle shape; at least two core wire groups are arranged in parallel at intervals along the third direction. In the first direction, the length of the first welded part is greater than the length of the second welded part.

4. The cable connector of claim 3, wherein, The plurality of the receiving channels are respectively disposed between the two first solder joints of each pair of signal terminals; The first welded part has a notch at its end near the support platform, and the notch is located on the side of the first welded part near the receiving channel.

5. The cable connector of claim 1, wherein, At least two overflow grooves are provided on the support platform; each overflow groove extends along the first direction in the shape of a strip groove, and multiple overflow grooves are arranged opposite to each other on both sides of the first welding part and / or the second welding part; each overflow groove is connected to the corresponding receiving channel.

6. The cable connector of claim 1, wherein, The cable connector has a third direction, and the first direction, the second direction, and the third direction intersect each other; The receiving channel includes a near-ground section and a far-ground section; the near-ground section is located at one end of the receiving channel close to the second welding part, and the far-ground section is located at one end of the receiving channel away from the second welding part; the near-ground section and the far-ground section are connected. In the third direction, the width of the near section is greater than the width of the far section.

7. The cable connector of claim 6, wherein, In the first direction, the depth of the depression in the near-ground section is not equal to the depth of the depression in the far-ground section.

8. The cable connector of claim 6, wherein, The two side walls of the far section are provided with inclined guide surfaces, and the spacing between the inclined guide surfaces on both sides gradually increases along the direction close to the cable, and they are inclined.

9. The cable connector of claim 6, wherein, The insulating base includes an insulating shell, a first insulating block and a second insulating block assembled on the insulating shell; the first insulating block and the second insulating block are spliced ​​along a second direction, and one of the near-ground section and the far-ground section of the same accommodating channel is disposed on the first insulating block and the other is disposed on the second insulating block.

10. The cable connector according to claim 1, characterized in that, The insulating base includes an insulating shell, a first insulating block and a second insulating block assembled on the insulating shell; the first insulating block covers the first terminal block, and the second insulating block covers the second terminal block; The signal terminal includes a contact portion, a bent portion, a contracted portion, an embedded portion, an exposed portion, and a first solder portion connected sequentially along a first direction; the bent portion extends out of the outside of the first insulating block or the second insulating block, the exposed portion is exposed in the corresponding opening provided in the first insulating block or the second insulating block, and the contracted portion and the embedded portion are both embedded in the first insulating block or the second insulating block; In the third direction, the width of the contraction section is smaller than the width of the embedded section, the width of the embedded section is smaller than the width of the end of the bend away from the contact portion, and the width of the embedded section is smaller than the width of the exposed section.

11. The cable connector of claim 1, wherein, The metal shell is provided with a buckle at one end near the support platform. The insulating base is inserted into the metal shell along the first direction. The insulating base has a slot at the position corresponding to the buckle. The buckle is bent into the slot to lock the metal shell and the insulating base in place. The outer surface of the insulating base is provided with a raised rib, which is elongated and extends along a first direction, and the raised rib abuts against the inner surface of the metal shell.

12. The cable connector of claim 1, wherein, The minimum distance between the shielding layer and the end of the first welded part is 0.1 mm to 0.24 mm.

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