Cable connectors and communication systems

Abstract

The present disclosure provides a cable connector, including at least one conductive terminal electrically connected to a docking end, the conductive terminal including: one or more signal terminals, each signal terminal including a signal hook portion, a transition portion, a bending portion and a connecting portion, the signal hook portion is connected to the first end of the transition portion, the second end of the transition portion is connected to the first end of the bending portion, the second end of the bending portion is connected to the first end of the connecting portion; the signal hook portion is electrically connected to the docking end, and the connecting portion is electrically connected to the cable; the vertical distance from the first end of the connecting portion to the plane where the docking end is located is smaller than the vertical distance from the second end to the plane where the docking end is located. The present disclosure also provides a communication system.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic technology, and in particular to a cable connector and a communication system. Background Art

[0002] As communication systems evolve towards 112Gbps and higher rates, traditional printed circuit boards (PCBs) can hardly match the passive link transmission requirements of high-speed interconnection systems. Currently, replacing PCB traces with cable connector components has become one of the mainstream technical means to improve the link loss of communication systems. In communication equipment with high requirements for spatial layout, especially in scenarios where vertical space is limited and dense wiring is required, in order to increase the interconnection density, most horizontal cable connectors are equipped with two or more rows of conductive terminals. The connecting part of the conductive terminal (the part that needs to be connected to the cable) is parallel to the plane where the PCB is located. When the cables are stacked longitudinally, the structures of the front and rear rows of conductive terminals are required to be differentiated, which will undoubtedly increase the design difficulty of the cable connector. Moreover, when the height of the cable connector needs to be reduced, the two rows of conductive terminals usually share a shielding structure, which increases the risk of crosstalk between the front and rear rows of terminals. Therefore, it is necessary to design a new cable connector. Summary of the invention

[0003] The present disclosure provides a cable connector and a communication system.

[0004] In a first aspect, an embodiment of the present disclosure provides a cable connector, comprising at least one conductive terminal electrically connected to a mating end, wherein the conductive terminal comprises:

[0005] One or more signal terminals, each of which comprises a signal hook portion, a transition portion, a bending portion and a connecting portion, wherein the signal hook portion is connected to a first end of the transition portion, a second end of the transition portion is connected to a first end of the bending portion, and a second end of the bending portion is connected to a first end of the connecting portion; the signal hook portion is electrically connected to the docking end, and the connecting portion is electrically connected to a cable;

[0006] The vertical distance from the first end of the connecting portion to the plane where the butt end is located is smaller than the vertical distance from the second end to the plane where the butt end is located.

[0007] In a second aspect, an embodiment of the present disclosure provides a communication system, including a cable connector and a docking end, wherein the cable connector is electrically connected to the docking end, and the cable connector includes the cable connector provided by an embodiment of the present disclosure.

[0008] The cable connector provided by the embodiment of the present disclosure comprises a signal terminal including a signal groove contact portion, a transition portion, a bending portion and a connecting portion which are connected in sequence. The vertical distance from the first end of the connecting portion to the plane where the docking end is located is smaller than the vertical distance from the second end to the plane where the docking end is located, that is, the connecting portion is inclined relative to the plane where the docking end is located. When the cables are stacked in the longitudinal direction, due to the inclined setting of the connecting portion, the cables can be first tilted upward and then adjusted to be parallel to the plane where the docking end is located. Therefore, even if multiple rows of conductive terminals are provided, the structure of each row of signal terminals is the same, that is, there is no need to perform differentiated design on the signal terminals, which greatly reduces the design difficulty of the cable connector and can also shorten the processing cycle of the cable connector. Even under the requirements of ultra-low configuration and high configuration, the front and rear rows of conductive terminals can still adopt an independent shielding structure. The cable connector has excellent performance in terms of insertion loss, return loss and crosstalk, and can support transmission rates of 112Gbps and above. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In the accompanying drawings of the embodiments of the present disclosure:

[0010] Figure 1 A diagram of an application scenario of the cable connector provided in an embodiment of the present disclosure under ultra-low configuration and high requirements;

[0011] Figure 2 A schematic diagram of the structure of a communication system provided by an embodiment of the present disclosure;

[0012] Figure 3 An exploded view of a cable connector provided in an embodiment of the present disclosure;

[0013] Figure 4 A partial enlarged view of a cable connector provided in an embodiment of the present disclosure;

[0014] Figure 5 A schematic diagram of the structure of a signal terminal provided by an embodiment of the present disclosure;

[0015] Figure 6 A side view of a signal terminal provided by an embodiment of the present disclosure;

[0016] Figure 7 A side view of another signal terminal provided by an embodiment of the present disclosure;

[0017] Figure 8 A schematic diagram of the structure of a ground terminal and a metal sheet provided in an embodiment of the present disclosure;

[0018] Fig. 9 A schematic diagram of the structure of a metal sheet provided in an embodiment of the present disclosure;

[0019] Fig.10 It is a schematic diagram of the structure of the lower hanging slot in the embodiment of the present disclosure;

[0020] Fig.11 A schematic diagram of a portion of the structure of a cable connector provided in an embodiment of the present disclosure;

[0021] Fig.12 A schematic diagram of a portion of the structure of a cable connector provided in an embodiment of the present disclosure;

[0022] Fig.13 A schematic diagram of a portion of the structure of a cable connector provided in an embodiment of the present disclosure;

[0023] Fig.14 A schematic diagram of the structure of a shielding shell provided in an embodiment of the present disclosure;

[0024] Fig.15 A side view of a shielding shell provided in an embodiment of the present disclosure;

[0025] Fig.16 A schematic diagram of the structure of another cable connector provided in an embodiment of the present disclosure;

[0026] Fig.17 A partial structural diagram of another cable connector provided in an embodiment of the present disclosure; ( Fig.17 and Fig.16 are views of the same cable connector from different orientations)

[0027] Fig.18 A curve diagram of the insertion loss of the cable connector provided by the embodiment of the present disclosure;

[0028] Fig.19 A curve diagram of the return loss of the cable connector provided by the embodiment of the present disclosure;

[0029] Fig. 20 A structural schematic diagram of a docking terminal provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0031] The present disclosure will be described more fully below with reference to the accompanying drawings, but the embodiments shown may be embodied in different forms, and the present disclosure should not be construed as being limited to the embodiments set forth below. On the contrary, the purpose of providing these embodiments is to make the present disclosure thorough and complete, and will enable those skilled in the art to fully understand the scope of the present disclosure.

[0032] The accompanying drawings of the embodiments of the present disclosure are used to provide a further understanding of the embodiments of the present disclosure, and constitute a part of the specification, and are used together with the detailed embodiments to explain the present disclosure, and do not constitute a limitation of the present disclosure. By describing the detailed embodiments with reference to the accompanying drawings, the above and other features and advantages will become more apparent to those skilled in the art.

[0033] The present disclosure may be described with reference to plan views and / or cross-sectional views by means of ideal schematic views of the present disclosure. Therefore, the exemplary illustrations may be modified according to manufacturing techniques and / or tolerances.

[0034] In the absence of conflict, the various embodiments of the present disclosure and the various features therein may be combined with each other.

[0035] The terms used in the present disclosure are only used to describe specific embodiments and are not intended to limit the present disclosure. The term "and / or" as used in the present disclosure includes any and all combinations of one or more related enumerated items. The singular forms "one" and "the" as used in the present disclosure are also intended to include plural forms, unless the context clearly indicates otherwise. The terms "including", "made of..." as used in the present disclosure specify the presence of the features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof.

[0036] Unless otherwise defined, all terms (including technical and scientific terms) used in this disclosure have the same meaning as commonly understood by those of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this disclosure, and will not be interpreted as having an idealized or overly formal meaning unless expressly defined in this disclosure.

[0037] The present disclosure is not limited to the embodiments shown in the drawings, but includes modifications of the configurations formed based on the manufacturing process. Therefore, the regions illustrated in the drawings have schematic properties, and the shapes of the regions shown in the drawings illustrate the specific shapes of the regions of the elements, but are not intended to be limiting.

[0038] Figure 1 This is a diagram of an application scenario of the cable connector provided by the embodiment of the present disclosure under ultra-low configuration and high demand. Figure 1 As shown, a chip 20 is disposed at the docking end 10, and a heat sink 30 is disposed on the top of the chip 20 for dissipating heat generated by the chip 20. The signal end of the chip 20 is electrically connected to the cable connector 40 through a line (not shown) on the docking end 10, and the cable connector 40 is electrically connected to the cable 50.

[0039] On the first aspect, the embodiments of the present disclosure provide a cable connector, in which each row of conductive terminals of the cable connector can adopt the same structural design, which greatly simplifies the design difficulty and shortens the processing cycle of the cable connector. Even under ultra-low configuration and high requirements, the front and rear rows of conductive terminals can still adopt an independent shielding structure. The cable connector has better performance in insertion loss, return loss and crosstalk, and can support transmission rates of 112Gbps and above.

[0040] Figure 2 A schematic diagram of the structure of a communication system provided in an embodiment of the present disclosure is provided. Figure 3 An exploded view of a cable connector provided in an embodiment of the present disclosure, combined with Figure 2 and Figure 3 The cable connector includes a plurality of conductive terminals 1, which are fixed to a fixing member 2 and electrically connected to a cable 50. The conductive terminals 1 and the fixing member 2 are arranged in a housing 4, and the housing 4 can protect the conductive terminals 1 and the fixing member 2 to prevent the conductive terminals 1 and the fixing member 2 from being damaged by collision.

[0041] In some embodiments, the plurality of conductive terminals 1 are arranged in two rows, and each row may include one or more conductive terminals 1. The embodiment of the present disclosure does not limit the number of rows of conductive terminals 1.

[0042] Figure 4 This is a partial enlarged view of a cable connector provided by an embodiment of the present disclosure. Figure 4 As shown, the cable connector includes at least one group of conductive terminals 1, and the at least one group of conductive terminals 1 are arranged at intervals in the width direction of the cable connector.

[0043] In some embodiments, at least one group of conductive terminals 1 may be arranged in multiple rows in the length direction of the cable connector, with one or more groups of conductive terminals 1 being arranged in each row.

[0044] It should be noted that the present disclosure defines the extension direction of the cable as the length direction of the cable connector. Figure 4 The X direction in the figure; the length direction perpendicular to the cable is defined as the width direction of the cable connector, such as Figure 4 in the Y direction.

[0045] In some embodiments, each group of conductive terminals 1 includes one or more signal terminals 11, and the one or more signal terminals 11 are arranged at intervals in the width direction of the cable connector. The signal terminals 11 can be used to receive differential signals.

[0046] Figure 5 A schematic diagram of the structure of a signal terminal provided in an embodiment of the present disclosure is shown in FIG. Figure 6 A side view of a signal terminal provided by an embodiment of the present disclosure. Figure 5 and Figure 6 Each signal terminal 11 includes a signal hook portion 111, a transition portion 112, a bending portion 113 and a connecting portion 114. The signal hook portion 111 is connected to a first end of the transition portion 112, a second end of the transition portion 112 is connected to a first end of the bending portion 113, and a second end of the bending portion 113 is connected to a first end of the connecting portion 114; the signal hook portion 111 is electrically connected to the docking end 10, and the connecting portion 114 is electrically connected to the cable 50.

[0047] It should be noted that the first end and the second end are two opposite ends of the component. For ease of description, the present disclosure defines the end close to the docking end 10 as the first end, and the end away from the docking end 10 as the second end. By way of example, the first end of the transition portion 112 is the end close to the docking end 10, and the second end of the transition portion 112 is the end away from the docking end 10. The front end mentioned in the present disclosure refers to the end close to the docking end 10, and the rear end refers to the end away from the docking end 10. By way of example, for the signal terminal 11, the signal hook portion 111 can be the front end of the signal terminal 11, and the connecting portion 114 can be the rear end of the signal terminal 11. For a cable connector, the signal hook portion 111 can be the front end of the cable connector.

[0048] The vertical distance from the first end of the connecting portion 114 to the plane where the docking end 10 is located is smaller than the vertical distance from the second end to the plane where the docking end 10 is located, that is, the connecting portion 114 is tilted relative to the plane where the docking end 10 is located. When the cables are stacked in the longitudinal direction, due to the tilted connection portion 114, the cables can be tilted upward first and then adjusted to be parallel to the plane where the docking end is located. Even if multiple rows of conductive terminals are provided, the structure of each row of signal terminals is the same, that is, there is no need to differentiate the signal terminals, which greatly reduces the design difficulty of the cable connector and shortens the processing cycle of the cable connector. Even under ultra-low configuration requirements, the front and rear rows of conductive terminals can still adopt an independent shielding structure. The cable connector has excellent performance in insertion loss, return loss and crosstalk, and can support transmission rates of 112Gbps and above.

[0049] In some embodiments, the angle between the center line of the connector 114 in the X direction and the plane where the docking end 10 is located does not exceed 26°, and an ultra-low-profile high-profile horizontal cable connector can be obtained, which helps to place the cable connector under the chip heat sink. The cable connector can support application requirements of 112Gbps and above in terms of transmission performance, and can meet the requirements of being placed under the heat sink in terms of structure.

[0050] When the angle between the center line of the connecting portion 114 in the X direction and the plane where the butt end 10 is located is 30-90°, the conductive terminal 1 is more upright, and a high-profile and high-cable connector with less crosstalk can be obtained. Figure 7 As shown, the inclination angle of the connecting portion 114 is relative to Figure 6The inclination angle of the middle connection part is larger, making the cable connector more upright and having stronger anti-crosstalk performance.

[0051] In the embodiment of the present disclosure, the height of the cable connector can be adjusted by adjusting the angle between the signal terminal and the plane where the docking terminal 10 is located, and then the spacing between the front and rear rows of conductive terminals can be adjusted as needed. Therefore, the structure of the cable connector provided by the embodiment of the present disclosure is more flexible.

[0052] In some embodiments, the signal terminal 11 also includes a signal shrapnel portion 115, a first end of the signal shrapnel portion 115 is connected to the second end of the signal contact hook portion 111, and a second end of the signal shrapnel portion 115 is connected to the first end of the transition portion 112, and the signal shrapnel portion 115 is used to increase the contact force of the signal contact hook portion 111 against the docking end 10.

[0053] In some embodiments, the widths of the transition portion 112 , the bending portion 113 , and the connecting portion 114 may be equal or different.

[0054] For example, the widths of the transition portion 112 and the bending portion 113 are equal, and the widths of the transition portion 112 and the bending portion 113 are smaller than the width of the connecting portion 114. The wider connecting portion 114 can improve the reliability of the electrical connection with the cable. The transition portion 112 and the bending portion 113 are surrounded by the insulator 7. Narrowing the width can effectively improve the impedance of the signal terminal 11. The width of each part of the signal terminal can be flexibly adjusted according to the mechanical properties and impedance continuity of the signal terminal 11. The disclosed embodiment does not limit the specific width value of each part of the signal terminal 11.

[0055] In some embodiments, the signal terminal 11 further includes a first gradient portion 116 , wherein the width of the first end of the first gradient portion 116 is equal to the width of the signal hook portion 111 , and the width of the second end of the first gradient portion 116 is equal to the width of the signal spring portion 115 .

[0056] The first gradient portion 116 can smoothly transition the signal hook portion 111 and the signal spring portion 115, thereby preventing the impedance mutation of the signal terminal 11 caused by the size change of the signal hook portion 111 and the signal spring portion 115, improving the impedance continuity of the signal terminal, reducing signal reflection, thereby reducing the loss of signal transmission, and further improving the efficiency of signal transmission.

[0057] In some embodiments, in order to adjust the impedance of the conductive terminal 1, the width of the transition portion 112 is small, while the width of the signal shrapnel portion 115 is large, and a second gradient portion 117 may be provided between the transition portion 112 and the signal shrapnel portion 115, the width of the first end of the second gradient portion 117 is the same as the width of the signal shrapnel portion 115, and the width of the second end of the second gradient portion 117 is equal to the width of the transition portion 112. The second gradient portion 117 can smoothly transition the signal shrapnel portion 115 and the transition portion 112, which helps to adjust the impedance of the signal terminal of the cable connector, thereby reducing signal reflection, reducing the loss of signal transmission, and thus improving the efficiency of signal transmission.

[0058] In some embodiments, the width of the bending portion 113 is smaller than the width of the signal shrapnel portion 115, and the width of the connecting portion 114 is wider in order to facilitate electrical connection with the cable 50. A third gradient portion 118 may be further provided between the bending portion 113 and the connecting portion 114. The width of the first end of the third gradient portion 118 is equal to the width of the bending portion 113, and the width of the second end of the third gradient portion 118 is equal to the width of the connecting portion 114. The third gradient portion 118 can smoothly transition between the bending portion 113 and the connecting portion 114, reduce signal reflection, reduce signal transmission loss, and improve signal transmission efficiency.

[0059] Figure 8 A schematic diagram of the structure of the ground terminal and the metal sheet provided in the embodiment of the present disclosure, combined with Figure 4 and Figure 8 As shown, the conducting terminal 1 further includes: at least one grounding terminal 12 and a metal sheet 13, wherein the grounding terminal 12 includes a grounding hook portion 121, a grounding spring portion 122 and a fixing portion 123, the second end of the grounding hook portion 121 is connected to the first end of the grounding spring portion 122, the second end of the grounding spring portion 122 is connected to the first end of the fixing portion 123, and the grounding hook portion 121 is electrically connected to the docking terminal 10. The metal sheet 13 is electrically connected to the second end of the fixing portion 123.

[0060] Fig. 9 A schematic diagram of the structure of a metal sheet provided in an embodiment of the present disclosure. Figure 8 and Fig. 9 As shown, the metal sheet 13 includes a metal sheet body 131 and a stop bar 132, the stop bar 132 protrudes from the first end of the metal sheet body 131; the stop bar 132 is provided with a convex surface, the projection shape of the convex surface on the side of the stop bar is consistent with the projection shape of the bending portion 113 of the signal terminal 11 on the side of the signal terminal, and the fixing portion 123 of the ground terminal 12 is connected to the first end of the stop bar 132. The convex surface on the stop bar 132 is consistent with the shape of the bending portion 113 of the signal terminal 11, providing a uniform side return path for the bending area of ​​the signal terminal.

[0061] The side surface of the blocking bar 132 and the side surface of the signal terminal 11 are both planes perpendicular to the Y direction.

[0062] Combination Figure 4 and Fig. 9 The metal sheet body 131 is provided with a cable receiving groove 133, which is used to receive the shielding layer 502 of the cable 50 and is electrically connected to the shielding layer 502 of the cable. The wire core 501 of the cable is electrically connected to the connecting portion 114 of the signal terminal 11, the shielding layer 502 of the cable is electrically connected to the cable receiving groove 133, and the outer sheath 503 of the cable extends from the rear end of the cable receiving groove 133. Among them, the shielding layer 502 of the cable 50 can be aluminum foil.

[0063] In some embodiments, the shielding layer 502 of the cable 50 is in close contact with the cable receiving groove 133 , so that the shielding layer 502 of the cable 50 is electrically connected to the cable receiving groove 133 .

[0064] In some embodiments, an elastic conductor (not shown) is disposed between the shielding layer 502 of the cable 50 and the cable receiving groove 133, and the shielding layer 502 of the cable 50 and the cable receiving groove 133 are electrically connected through the elastic conductor.

[0065] Fig.10 Schematic diagram of the structure of the lower hanging slot in the embodiment of the present disclosure. Figure 8 and Fig.10 The cable connector further includes a lower hanging groove 5, which is disposed below the connecting portion 114 of the signal terminal 11 and is electrically connected to the metal sheet body 131, but the lower hanging groove 5 is insulated from the signal terminal 11. The lower hanging groove 5 can provide a uniform return path for the connecting portion.

[0066] In some embodiments, the lower hanging groove 5 and the metal sheet 13 can be a separate structure or an integrally formed structure. When the lower hanging groove 5 and the metal sheet 13 are a separate structure, the lower hanging groove 5 and the metal sheet body 131 can be physically connected by riveting, welding or clamping.

[0067] In some embodiments, the lower hanging groove 5 includes a hanging groove body 51 and a hanging groove 52 , and the groove surface of the hanging groove 52 is coplanar with the groove surface of the cable receiving groove 133 .

[0068] In the embodiment of the present disclosure, the vertical distance from the first end of the bending portion 113 to the plane where the docking end 10 is located is smaller than the vertical distance from the second end to the plane where the docking end 10 is located. The bending portion drives the connecting portion 114 to be lifted up, and further drives the lower hanging groove 5 and the metal sheet 13 below the connecting portion 114 to be lifted up. This increases the spacing between the projection areas of the front and rear rows of conductive terminals on the plane where the docking end 10 is located, thereby improving the crosstalk between the front and rear rows of signal terminals, and at the same time weakening the electromagnetic coupling effect of the metal sheet and the PCB.

[0069] In some embodiments, the cable connector includes one conductive terminal or a plurality of conductive terminals.

[0070] When the cable connector includes one conductive terminal, the conductive terminal includes two or more ground terminals and one or more signal terminals that are spaced apart, and the signal terminals are spaced apart between the ground terminals.

[0071] For example, when the cable connector includes one conductive terminal, the conductive terminal 1 includes two signal terminals 11 and two ground terminals 12 that are spaced apart, and the two signal terminals 11 are spaced apart between the two ground terminals 12 .

[0072] When the cable connector includes two or more conducting terminals, the two or more conducting terminals are arranged in at least one row, at least one grounding terminal is arranged between adjacent conducting terminals in each row, and at least one grounding terminal is arranged at the outermost side of each row of conducting terminals.

[0073] For example, when the cable connector includes two or more conductive terminals, the conductive terminal 1 includes a ground terminal 12 and two signal terminals 11 that are spaced apart, the two signal terminals 11 are adjacently spaced apart, and the ground terminal 12 is spaced apart on one side of the two signal terminals 11. Moreover, at least one conductive terminal located at the outermost side includes two ground terminals 12 and two signal terminals 11 that are spaced apart, and the two signal terminals 11 are spaced apart between the two ground terminals 12, so that the outermost side of the cable connector can be ensured to be a ground terminal.

[0074] For example, when the cable connector includes two or more conductive terminals, each conductive terminal 1 includes two ground terminals 12 and two signal terminals 11 that are spaced apart, and the two signal terminals 11 are spaced apart between the two ground terminals 12 .

[0075] In some embodiments, each group of conductive terminals 1 includes two or more signal terminals 11 and at least one ground terminal 12. The signal terminals 11 and the ground terminals 12 are arranged at intervals. Moreover, the ground terminals 12 are arranged on the outside of the conductive terminals 1, and the signal terminals 11 are arranged on the inside of the conductive terminals 1.

[0076] For example, the conductive terminal 1 includes two signal terminals 11 and one ground terminal 12, and the two signal terminals 11 and the ground terminal 12 are arranged alternately in the width direction of the cable connector. Moreover, the two signal terminals 11 are arranged adjacent to each other side by side, and the ground terminal 12 can be arranged on one side of the two signal terminals 11, either on the left or the right side, but cannot be arranged between the two signal terminals 11.

[0077] For example, the conductive terminal 1 includes two signal terminals 11 and two ground terminals 12, and the two signal terminals 11 and the two ground terminals 12 are arranged in an interval in the width direction of the cable connector. Moreover, the two signal terminals 11 are arranged adjacent to each other, and the two ground terminals 12 can be arranged on both sides of the two signal terminals 11, that is, the two signal terminals 11 are located between the two ground terminals 12.

[0078] In some embodiments, each conductive terminal 1 includes at least one signal terminal 11 and at least one ground terminal 12, at least one signal terminal 11 is arranged at intervals, and at least one ground terminal 12 is arranged at intervals outside the plurality of signal terminals 11. Two adjacent signal terminals 11 are arranged at a first preset interval, and the ground terminal 12 and the signal terminal 11 are arranged at a second preset interval, and the first preset interval is less than or equal to the second preset interval.

[0079] Fig.11 A partial structural diagram of a cable connector provided in an embodiment of the present disclosure, such as Fig.11 As shown, the conductive terminal 1 includes two signal terminals 11 and two ground terminals 12 arranged at intervals. The two signal terminals 11 are arranged at intervals, and the two ground terminals 12 are arranged on the sides of the two signal terminals 11, that is, the two signal terminals 11 are arranged between the two ground terminals 12. The two signal terminals 11 are arranged according to a first preset spacing L1, and the ground terminal 12 and the signal terminal 11 are arranged according to a second preset spacing L2. The first preset spacing L1 and the second preset spacing L2 can be set as needed, but the first preset spacing L1 is less than or equal to the second preset spacing L2, that is, the spacing between the signal terminals 11 is less than or equal to the spacing between the signal terminals 11 and the ground terminals 12.

[0080] In some embodiments, when two or more conductive terminals 1 are arranged in two or more rows, two adjacent rows of conductive terminals 1 are staggered in the width direction; and / or two adjacent rows of conductive terminals 1 are arranged at a third preset spacing in the length direction of the cable 50.

[0081] Fig.12 A partial structural schematic diagram of a cable connector provided in an embodiment of the present disclosure, Fig.13 A schematic diagram of a portion of the structure of a cable connector provided in an embodiment of the present disclosure. Fig.12 and Fig.13 Two rows of conducting terminals are provided, each row is provided with one or more conducting terminals, and a plurality of conducting terminals 1 are arranged in an alternate arrangement. In the width direction of the cable connector, the conducting terminals 1 in the two rows are staggered, which is conducive to the stacking of the cables 50; more importantly, the crosstalk between the conducting terminals 1 in different rows can be suppressed.

[0082] In some embodiments, the conductive terminals 1 in two adjacent rows are staggered in the width direction.

[0083] In some embodiments, Fig.12 As shown, two adjacent rows of conductive terminals 1 are arranged at a third preset spacing L3 in the length direction of the cable 50. For example, the third preset spacing L3 is greater than 2.5 mm. In the embodiment of the present disclosure, the larger the spacing between two adjacent rows of conductive terminals 1, the smaller the crosstalk of conductive terminals 1 in different rows.

[0084] In some embodiments, the wire core 501 of the cable 50 is electrically connected to the connecting portion 114 of the signal terminal 11 , and the width of the connecting portion 114 is not less than the diameter of the wire core 501 .

[0085] Generally, the cable and the conductive terminal are grounded together, that is, the shielding layer 502 needs to be electrically connected to the conductive terminal 1. In some embodiments, the shielding layer 502 and the shielding cavity can be electrically connected by close contact, or an elastic conductor can be filled between the shielding layer 502 and the shielding cavity to achieve electrical connection between the two, and the shielding layer of the cable 50 is electrically connected to the shielding shell 6 through the elastic conductor.

[0086] Fig.14 A schematic diagram of the structure of a shielding shell provided in an embodiment of the present disclosure is shown in FIG. Fig.15 A side view of a shielding shell provided by an embodiment of the present disclosure. Fig.14 and Fig.15 The shielding shell 6 includes a shell body 61, and a suspended baffle portion 62, a fixed segment shell top 63, a front support portion 64, a bending area shell top 65, a rear support portion 66, a connecting segment shell top 67 and a cable receiving groove 68 arranged on the shell body 61. The suspended baffle portion 62 covers the signal spring piece portion 115, the fixed segment shell top 63 covers the transition portion 112, the bending area shell top 65 covers the bending portion 113, the shape of the bending area shell top 65 matches the shape of the bending portion 113, the connecting segment shell top 67 covers the connecting portion 114, the top end of the front support portion 64 is connected to the fixed segment shell top 63, the bottom end of the front support portion 64 extends toward the docking end 10 and is electrically connected to the fixed portion 123 of the grounding terminal 12; the top end of the rear support portion 66 is connected to the bending area shell top 65, the bottom end of the rear support portion 66 extends toward the docking end 10 and is electrically connected to the metal sheet 13; the cable receiving groove 68 is used to accommodate the shielding layer of the cable 50.

[0087] Among them, the top 65 of the bending area shell is consistent with the shape of the bending portion 113 of the signal terminal 11, which can provide a uniform lateral return path for the bending portion 113 of the signal terminal 11, and can improve the impedance continuity of the signal terminal 11, reduce signal reflection, thereby reducing signal transmission loss, and further improving signal transmission efficiency.

[0088] In the embodiment of the present disclosure, the number of shielding shells 6 is not less than the number of conducting terminals 1, and each conducting terminal 1 corresponds to a shielding shell 6. When the cable connector includes multiple shielding shells 6, the shell bodies 61 of the multiple shielding shells 6 can be an integrated structure.

[0089] In some embodiments, a threading notch 69 is further provided on the top of the shielding shell 6 for receiving the cable 50. The top of the shielding shell 6 refers to the outside of the shielding cavity, that is, the side of the shielding shell 6 away from the docking end 10. When the cable connector is provided with multiple rows of conductive terminals 1, the cables 50 electrically connected to the conductive terminals 1 in the front row can pass through the threading notch 69 on the rear shielding shell 6, which can make the cables 50 neater and less tangled.

[0090] The cable connector also includes an insulator 7, which covers the transition portion 112 and the bending portion 113 of the signal terminal 11. The insulator 7 can completely cover the transition portion 112 and the bending portion 113 of the signal terminal 11, that is, a closed covering, or partially cover the transition portion 112 and the bending portion 113, that is, a semi-open covering.

[0091] Fig.16 A schematic diagram of the structure of a cable connector provided by an embodiment of the present disclosure is shown in FIG. Fig.17 A partial structural diagram of a cable connector provided in an embodiment of the present disclosure is shown in FIG. Fig.17 and Fig.16 The same cable connector is shown in different directions. Fig.16 and Fig.17 An opening 71 is provided at the bottom of the insulator 7, so that the insulator 7 can semi-openly cover the transition portion 112 and the bending portion 113. Compared with the closed covering, the width of the transition portion 112 and the bending portion 113 can be increased in the semi-open covering.

[0092] The insulator 7 is semi-open and covers the transition portion 112 , the bent portion 113 of the signal terminal 11 and the periphery of the fixing portion 123 of the ground terminal.

[0093] When the insulator 7 is solidified, the conducting terminal 1 and the metal sheet 13 can be fixed together.

[0094] like Figure 3 As shown, the cable connector also includes a fixing member 2, which includes a fixing body 21 and a plurality of fixing grooves 22 arranged on the fixing body 21. The plurality of fixing grooves 22 are provided with at least one row of fixing grooves 22 in the length direction of the fixing member 2, and the fixing grooves 22 in each row are arranged at intervals in the width direction of the fixing member 2.

[0095] The fixing member 2 can be a plastic support rack or a metal rack. When the fixing member 2 is a metal rack, a card slot is provided on the metal rack, and the conducting terminal 1 is separated and fixed on the metal rack by card connection.

[0096] In some embodiments, the cable connector further includes a shell 4 , which is inverted on the surface of the mating end 10 , and the conductive terminal 1 is disposed in the shell 4 .

[0097] Fig.18 The insertion loss curve diagram of the cable connector provided in the embodiment of the present disclosure is as follows: Fig.19 This is a return loss curve diagram of the cable connector provided by the embodiment of the present disclosure, wherein the horizontal axis represents the frequency (GHz) and the vertical axis represents the amplitude (dB). Fig.18 and Fig.19 , it can be seen from the insertion loss curve that the insertion loss is greater than -0.5dB at the 56GHz frequency. It can be seen from the return loss curve that in the (0-28)GHz frequency band, the return loss is less than -19dB, in the (28-56)GHz frequency band, the return loss is less than -18dB, and in the (56-84)GHz frequency band, the return loss is less than -13dB. The cable connector provided in this embodiment can support a transmission rate of 112Gbps and above.

[0098] The cable connector provided by the embodiment of the present disclosure comprises a signal terminal 11 including a signal groove contact portion, a transition portion 112, a bending portion 113 and a connecting portion 114 connected in sequence. The vertical distance from the first end of the connecting portion 114 to the plane where the docking terminal 10 is located is smaller than the vertical distance from the second end to the plane where the docking terminal 10 is located, that is, the connecting portion 114 is inclined relative to the plane where the docking terminal is located. When the cables are stacked in the longitudinal direction, due to the inclined setting of the connecting portion, the cables can be tilted upward first and then adjusted to be parallel to the plane where the docking terminal is located. Therefore, even if multiple rows of conductive terminals are provided, the structure of each row of signal terminals is the same, that is, there is no need to differentiate the signal terminals, which greatly reduces the design difficulty of the cable connector and can also shorten the processing cycle of the cable connector. Even under the requirements of ultra-low configuration and high configuration, the front and rear rows of conductive terminals can still adopt an independent shielding structure. The cable connector has excellent performance in insertion loss, return loss and crosstalk, and can support transmission rates of 112Gbps and above.

[0099] In a second aspect, an embodiment of the present disclosure provides a communication system.

[0100] like Figure 1 As shown, the communication system provided by the embodiment of the present disclosure includes a cable connector 40 and a docking end 10, the cable connector is electrically connected to the docking end 10, and the cable connector includes the cable connector provided by the embodiment of the present disclosure.

[0101] Fig. 20A structural diagram of a docking terminal provided in an embodiment of the present disclosure, combined with Figure 6 and Fig. 20 The docking end 10 includes a circuit board 101 and at least one set of conductive plates 102, wherein at least one set of conductive plates is arranged on the surface of the circuit board and is electrically connected to the circuits on the circuit board, and the signal contact hook portion 111 of the cable connector is electrically connected to the conductive plates.

[0102] In some embodiments, each group of conductive plates includes a plurality of conductive plates, and the plurality of conductive plates are arranged in an intermittent manner, and the interval between the plurality of conductive plates is consistent with the interval between the signal terminals 11 and the ground terminals 12 in the conductive terminal 1 .

[0103] In some embodiments, the conductive contact pieces 102 include a signal piece 1021 and a ground piece 1022, the spacing between adjacent signal pieces 1021 is a first preset spacing, the spacing between the signal piece 1021 and the adjacent ground piece 1022 is a second preset spacing, and the spacing between the front and rear rows of conductive contact pieces 102 is a third preset spacing, and appropriately increasing this spacing is beneficial to reducing the crosstalk between the front and rear rows of conductive contact pieces 102. The specific sizes of the first preset spacing, the second preset spacing, and the third preset spacing are not limited.

[0104] For example, when the conductive terminal 1 includes two signal terminals 11 and two ground terminals 12, each group of conductive plates includes four conductive plates, and the spacing between the four conductive plates corresponds to the spacing between the signal terminals 11 and between the signal terminals 11 and the ground terminals 12. The conductive terminal 1 is electrically connected to the conductive plates, which can realize the electrical connection between the cable connector and the docking terminal 10.

[0105] In the communication system provided by the embodiment of the present disclosure, since the vertical distance from the first end of the connecting portion 114 to the plane where the docking end 10 is located is smaller than the vertical distance from the second end to the plane where the docking end 10 is located, that is, the connecting portion 114 is tilted relative to the plane where the docking end is located, when the cables are stacked in the longitudinal direction, due to the tilted connection portion, the cables can first be tilted upward and then adjusted to be parallel to the plane where the docking end is located. Therefore, even if multiple rows of conductive terminals are provided, the structure of each row of signal terminals is the same, that is, there is no need to perform differentiated design on the signal terminals, which greatly reduces the design difficulty of the cable connector and can also shorten the processing cycle of the cable connector; even under the ultra-low configuration and high requirements, the front and rear rows of conductive terminals can still adopt an independent shielding structure, and the cable connector has better performance in terms of insertion loss, return loss and crosstalk, and can support transmission rates of 112Gbps and above.

[0106] The present disclosure has disclosed example embodiments, and although specific terms are employed, they are used and should be interpreted only in a general illustrative sense and not for limiting purposes. In some instances, it will be apparent to those skilled in the art that, unless otherwise expressly stated, features, characteristics, and / or elements described in conjunction with a particular embodiment may be used alone or in combination with features, characteristics, and / or elements described in conjunction with other embodiments. Therefore, those skilled in the art will appreciate that various changes in form and detail may be made without departing from the scope of the present disclosure as set forth in the appended claims.

Claims

1. A cable connector, comprising at least one conductive terminal electrically connected to a butt end, the conductive terminal comprising: More than one signal terminal, each of the signal terminals comprises a signal hook portion, a transition portion, a bending portion and a connecting portion, the signal hook portion is connected to the first end of the transition portion, the second end of the transition portion is connected to the first end of the bending portion, and the second end of the bending portion is connected to the first end of the connecting portion; the signal hook portion is electrically connected to the docking end, and the connecting portion is electrically connected to the cable; The vertical distance between the first end of the connecting portion and the plane where the butt end is located is smaller than the vertical distance between the second end and the plane where the butt end is located; at least one ground terminal, the ground terminal comprising a fixing portion; A metal sheet, the metal sheet comprising a metal sheet body and a stop bar, the stop bar protruding from a first end of the metal sheet body; the stop bar is provided with a convex surface, the projection shape of the convex surface on the side of the stop bar is consistent with the projection shape of the bending portion of the signal terminal on the side of the signal terminal, and the fixing portion of the ground terminal is connected to the first end of the stop bar; The metal sheet body is provided with a cable receiving groove, and the cable receiving groove is electrically connected to the shielding layer of the cable.

2. The cable connector according to claim 1, wherein: The signal terminal further includes a signal spring portion, a first end of the signal spring portion is connected to the second end of the signal contact hook portion, and a second end of the signal spring portion is connected to the first end of the transition portion.

3. The cable connector according to claim 2, wherein: The signal terminal further includes: a first gradient portion, wherein a width of a first end of the first gradient portion is equal to a width of the signal contact hook portion, and a width of a second end of the first gradient portion is equal to a width of the signal shrapnel portion; and / or, a second gradient portion, wherein the width of a first end of the second gradient portion is the same as the width of the signal shrapnel portion, and the width of a second end of the second gradient portion is equal to the width of the transition portion; And / or, a third gradient portion, wherein the width of a first end of the third gradient portion is equal to the width of the bending portion, and the width of a second end of the third gradient portion is equal to the width of the connecting portion.

4. The cable connector according to claim 2, wherein: The grounding terminal also includes a grounding hook portion and a grounding spring portion, wherein the second end of the grounding hook portion is connected to the first end of the grounding spring portion, the second end of the grounding spring portion is connected to the first end of the fixing portion, and the grounding hook portion is electrically connected to the docking end.

5. The cable connector according to claim 1, wherein: The shielding layer of the cable and the cable receiving groove are provided with elastic conductors.

6. The cable connector according to claim 1, wherein: It also includes a lower hanging groove, which is arranged below the connecting portion of the signal terminal and is electrically connected to the metal sheet.

7. The cable connector according to claim 1, wherein: The conductive terminal comprises two or more ground terminals and one or more signal terminals which are arranged at intervals, and the signal terminals are arranged at intervals between the ground terminals; Alternatively, it comprises more than two conducting terminals, the more than two conducting terminals are arranged in at least one row, at least one grounding terminal is arranged between adjacent conducting terminals in each row, and at least one grounding terminal is arranged at the outermost side of the conducting terminals in each row.

8. The cable connector according to claim 1, wherein: Two or more of the signal terminals in the conductive terminals are arranged at a first preset distance, and the ground terminal and the signal terminal are arranged at a second preset distance, wherein the first preset distance is less than or equal to the second preset distance; And / or, when more than two conductive terminals are arranged in more than two rows, the conductive terminals in two adjacent rows are staggered in the width direction; and / or, the conductive terminals in two adjacent rows are arranged at a third preset spacing in the length direction of the cable.

9. The cable connector according to claim 2, wherein: Also includes: A shielding shell, wherein the shielding shell and the metal sheet form a shielding cavity, and the shielding layer of the cable is arranged in the shielding cavity.

10. The cable connector according to claim 9, wherein: The shielding shell includes a shell body, and a suspended baffle portion, a fixed segment shell top, a front support portion, a bending area shell top, a rear support portion, a connecting segment shell top and a cable receiving groove arranged on the shell body, the suspended baffle portion covers the signal spring piece portion, the fixed segment shell top covers the transition portion, the bending area shell top covers the bending portion, the shape of the bending area shell top matches the shape of the bending portion, the connecting segment shell top covers the connecting portion, the top of the front support portion is connected to the top of the fixed segment shell, the bottom end of the front support portion extends toward the docking end direction and is electrically connected to the fixed portion of the grounding terminal; the top of the rear support portion is connected to the top of the bending area shell, the bottom end of the rear support portion extends toward the docking end direction and is electrically connected to the metal sheet; the cable receiving groove is used to accommodate the shielding layer of the cable.

11. The cable connector according to claim 9, wherein: A wire threading slot is also provided on the top of the shielding shell for accommodating the cables.

12. The cable connector according to claim 1, wherein: The cable connector further includes an insulator, which covers the transition portion and the bending portion of the signal terminal; and / or the insulator covers the transition portion, the bending portion of the signal terminal and the periphery of the fixed portion of the ground terminal.

13. The cable connector according to claim 1, wherein: It also includes a shell, which is inverted on the surface of the butt end, and the conductive terminal is arranged in the shell.

14. A communication system, comprising a cable connector and a docking end, wherein the cable connector is electrically connected to the docking end, and the cable connector comprises the cable connector according to any one of claims 1 to 13.

15. The communication system according to claim 14, wherein: The butt end comprises: Circuit boards; At least one group of conductive plates is disposed on the surface of the circuit board and is electrically connected to the circuits on the circuit board. The signal contact hook portion of the cable connector is electrically connected to the conductive plates.

16. The communication system according to claim 15, wherein: Each group of the conductive contact pieces includes a plurality of the conductive contact pieces, and the plurality of the conductive contact pieces are arranged in an interval, and the interval between the plurality of conductive contact pieces is consistent with the interval between the signal terminals and the ground terminals in the conductive terminals.

Images