A connector

Abstract

The present application provides a connector, including: a cable end and a device end. The cable end includes the primary coil of the isolation transformer and the cable end pin, and the device end includes the secondary coil of the isolation transformer and the device end pin. The cable end pin and the device end pin are interconnected to couple the primary coil of the isolation transformer with the secondary coil of the isolation transformer. In this way, the maximum isolation between the primary and secondary sides of the isolation transformer is ensured, ensuring that electromagnetic energy will not reach the secondary side through the primary side, nor will it reach the primary side through the secondary side, is isolated from mutual interference between the two, and ensures that the electromagnetic energy in the electromagnetic disturbance test and the electromagnetic immunity test can be transferred according to the route predetermined during product design, without being affected by the mutual interference between the primary coil and the secondary coil, thereby increasing the electromagnetic shielding performance.

Description

Technical Field

[0001] The present application relates to the field of electromagnetic protection connection, and in particular to a connector. Background Art

[0002] As the progress of the information age continues to accelerate, various IT products are constantly updated and developed vigorously. Especially with the advent of the cloud era, the requirements for various electronic products are getting higher and higher. With the continuous improvement of the performance of electronic products, the requirements for electromagnetic compatibility (EMC) of products are also getting higher and higher. In the EMC performance of products, the performance of information sockets (RJ45) is very important. Often, the electromagnetic interference test (EMI) and electromagnetic immunity test (EMS) of RJ45 are prone to problems and it is difficult to find a suitable method to avoid them.

[0003] At present, RJ45 usually adopts fixed protection circuits, and performs surge protection by adding traditional isolation transformers and fixed surge protection devices in the circuit. This method is not adjustable. In case the protection fails or fails to achieve the expected protection effect, the only option is to change the protection strategy, replace or add protection components, which is complicated and costly. Moreover, electromagnetic interference can easily couple from the primary side to the secondary side through unbalanced wiring, parasitic effects of isolation transformers, and space radiation.

[0004] Therefore, a connector that can conveniently and effectively perform electromagnetic protection needs to be developed urgently. Summary of the invention

[0005] In view of the above problems, an embodiment of the present application provides a connector to overcome the above problems or at least partially solve the above problems.

[0006] According to a first aspect of an embodiment of the present application, a connector is disclosed, comprising:

[0007] A cable end, the cable end comprising a primary side coil of an isolation transformer and a cable end pin;

[0008] A device end, the device end including a secondary coil of the isolation transformer and a device end pin;

[0009] The cable end pins and the device end pins are connected to each other so that the primary side coil of the isolation transformer and the secondary side coil of the isolation transformer are coupled to each other.

[0010] Optionally, the middle part of the primary coil is filled with a high magnetic permeability material; and / or

[0011] The primary coil is surrounded by an insulating layer.

[0012] Optionally, the middle part of the secondary coil is filled with a high magnetic permeability material; and / or

[0013] The outer periphery of the secondary side coil is wrapped by an insulating layer.

[0014] Optionally, the cable end further includes: a first protection circuit, wherein the first protection circuit is interconnected with the primary side coil;

[0015] The first protection circuit is used to achieve at least one of the following: common mode suppression, impedance matching, and surge protection.

[0016] Optionally, a first electromagnetic shielding layer is wrapped on the surface of the primary coil at the cable end, the cable end pin and the first protection circuit;

[0017] The first electromagnetic shielding layer is wrapped with a first shielding shell.

[0018] Optionally, the first electromagnetic shielding layer is an electromagnetic damping material layer.

[0019] Optionally, the device end further includes: a second protection circuit, wherein the second protection circuit is interconnected with the secondary side coil;

[0020] The second protection circuit includes at least one or more of the following: a common mode inductor, an electrostatic protection device, and a surge protection device;

[0021] The common mode inductor is used to filter the common mode electromagnetic interference signal;

[0022] The electrostatic protection device is used to achieve electrostatic protection;

[0023] The surge protection device is used to achieve surge protection.

[0024] Optionally, the secondary side coil at the device end, the device end pin and the surface of the second protection circuit are wrapped with a second electromagnetic shielding layer;

[0025] The second electromagnetic shielding layer is wrapped with a second shielding shell.

[0026] Optionally, the second electromagnetic shielding layer is an electromagnetic damping material layer.

[0027] Optionally, the cable end further comprises: a differential signal cable group, the primary side coil is connected to the differential signal cable group;

[0028] The differential signal cable set includes: fixed-length cables and length-adjustable cables.

[0029] Optionally, the length-adjustable cable comprises:

[0030] A fixed-length cable segment and a reserved-length cable segment, wherein the reserved-length cable segment is less than 1 mm in length.

[0031] Optionally, the cable end further comprises: an adjustment knob;

[0032] The adjusting knob is arranged between the length-adjustable cable and the primary-side coil, and is used to adjust the length of the reserved-length cable segment.

[0033] Optionally, a single adjustment amount of the reserved length cable segment by the adjusting knob is 1 mil, and a total adjustment amount of the reserved length cable segment by the adjusting knob is less than 1 millimeter.

[0034] Optionally, the number of the differential signal cable groups is at least four, and the number of the adjustment knobs is at least four;

[0035] An adjusting knob is arranged between the length-adjustable cable of each differential signal cable group and the primary-side coil, for adjusting the length of the reserved-length cable segment.

[0036] Optionally, the number of the cable end pins is N, and the primary side coil is wound around the plurality of cable end pins;

[0037] The number of device-end pins is N, and the secondary-side coil is wound around a plurality of device-end pins, where N is an integer greater than 1.

[0038] The embodiments of the present application include the following advantages:

[0039] The connector provided in the embodiment of the present application includes a cable end, the cable end includes a primary coil of an isolation transformer and a cable end pin; the device end includes a secondary coil of the isolation transformer and a device end pin; the cable end pin and the device end pin are interconnected so that the primary coil of the isolation transformer and the secondary coil of the isolation transformer are coupled to each other, and the middle part of the primary coil and the middle part of the secondary coil are filled with high magnetic permeability materials, and the periphery of the two is wrapped by an insulating layer. Moreover, a first electromagnetic shielding layer is wrapped outside the cable end, a first shielding layer shell is wrapped outside the first electromagnetic shielding layer, a second electromagnetic shielding layer is wrapped outside the device end, and a second shielding layer shell is wrapped outside the second electromagnetic shielding layer, and the electromagnetic shielding layer is an electromagnetic damping material layer. In the embodiment of the present application, it is also proposed to wrap a differential signal cable group at the cable end, and the differential signal cable group includes a fixed length cable and an adjustable length cable, and the adjustable length cable can be used to adjust the cable length.

[0040] In this way, the connector in the present application, by adjusting the isolation transformer from being set at the device end in the related technology to setting its primary side coil and secondary side coil on both sides of the cable end and the device end respectively, ensures the maximum isolation between the primary side and the secondary side of the isolation transformer, ensures that the electromagnetic energy will not reach the secondary side through the primary side, nor will it reach the primary side through the secondary side, isolates the mutual interference between the two, and ensures that the electromagnetic energy in the electromagnetic disturbance test and the electromagnetic immunity test can be transferred according to the route predetermined during product design without being affected by the mutual interference between the primary side coil and the secondary side coil. In addition, by additionally wrapping the cable end and the device end with a layer of electromagnetic damping material, the electromagnetic shielding performance is increased, and the electromagnetic energy is prevented from reaching the secondary side from the primary side or from the secondary side to the primary side through radiation, thereby ensuring the thoroughness of the insulation. Moreover, by setting the length-adjustable cables in the differential signal cable group, the cable lengths in the differential signal cable group can be directly adjusted without changing the routing in the circuit board, thereby avoiding the conversion of common-mode surge energy into differential-mode energy due to the unequal lengths of the differential signal cables on the primary side, thereby affecting the secondary side. By adopting the connector proposed in this application, the electromagnetic compatibility protection performance of the product is greatly improved. For problems that may arise in electromagnetic disturbance testing and electromagnetic immunity testing, the primary and secondary coils of the isolation transformer are optimized to solve the problem of easy mutual interference between the two, ensuring that the electromagnetic energy transfer process meets the design expectations, meets the electromagnetic compatibility requirements, and achieves the purpose of convenient and effective electromagnetic protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0042] Figure 1 is a schematic diagram of a connector provided in an embodiment of the present application;

[0043] Figure 2 It is a schematic diagram of a coil structure provided in an embodiment of the present application;

[0044] Figure 3 It is a coil coupling schematic diagram provided in an embodiment of the present application;

[0045] Figure 4 It is a schematic diagram of connector shielding provided by an embodiment of the present application;

[0046] Figure 5This is a schematic diagram of a length-adjustable cable provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] In the drawings, the size of the constituent elements, the thickness of the layer or the area may be exaggerated for the sake of clarity. Therefore, any implementation of the present disclosure is not necessarily limited to the size shown in the drawings, and the shapes and sizes of the components in the drawings do not reflect the true proportions. In addition, the drawings schematically show ideal examples, and any implementation of the present disclosure is not limited to the shapes or values ​​shown in the drawings.

[0049] In the related art, the protection against electromagnetic interference mostly relies on fixed protection circuits. Fixed surge protection devices are set according to the usual methods in the past, which can play the role of electromagnetic protection. However, they cannot play the best protection role in all cases. Moreover, due to the reliance on fixed devices, the protection circuit itself has poor adjustability. When conducting electromagnetic disturbance tests and electromagnetic immunity tests, if the expected electromagnetic protection level is not achieved, the protection circuit needs to be modified on a large scale. In addition, electromagnetic interference can easily be coupled from the primary coil of the isolation transformer to the secondary coil of the isolation transformer through various reasons such as unbalanced wiring, parasitic effects of the isolation transformer, and space radiation, resulting in reduced electromagnetic protection effect.

[0050] Therefore, a connector is provided in an embodiment of the present application, which can reduce the mutual influence between the primary coil and the secondary coil of the isolation transformer, and can reduce the impact of circuit design on electromagnetic interference testing and electromagnetic immunity testing by adjusting the wiring length of the cable end, and also enhance the overall electromagnetic shielding performance of the system.

[0051] The connector provided in the embodiment of the present application is described in detail below in conjunction with the accompanying drawings.

[0052] Reference Figure 1 As shown, Figure 1 is a schematic diagram of a connector provided in an embodiment of the present application, such as Figure 1 As shown, the connector includes:

[0053] A cable end, the cable end comprising a primary side coil of an isolation transformer and a cable end pin;

[0054] A device end, the device end including a secondary coil of the isolation transformer and a device end pin;

[0055] The cable end pins and the device end pins are connected to each other so that the primary side coil of the isolation transformer and the secondary side coil of the isolation transformer are coupled to each other.

[0056] In an embodiment of the present application, the connector is divided into a cable end and a device end by the two ends of the connector, wherein the cable end is the part from the connector plug to the connected cable side, which should at least include the primary side coil of the isolation transformer and the pins of the cable end, and the device end is the part from the connector socket to the connected device side, which should at least include the secondary side coil of the isolation transformer and the pins of the device end.

[0057] Among them, the cable end pin and the device end pin are connected to each other, serving as the interconnection between the two ends of the connector. At the same time, the primary side coil around the cable end pin and the secondary side coil around the device end pin are coupled to each other after the pins are connected to each other, thereby achieving maximum isolation between the primary side coil and the secondary side coil and reducing interference coupling between the coils.

[0058] Optionally, the connector can be an RJ45 connector, with the connector plug and one side of the cable connected to it serving as the cable end, and the connector socket side to the device to which it is connected serving as the device end. Through the mutual connection between the RJ45 connector plug and the socket, the primary side coil and the secondary side coil of the isolation transformer distributed around the connector plug and the socket pins are mutually coupled, thereby realizing the electromagnetic protection function of the isolation transformer.

[0059] In combination with the above embodiments, in one implementation, the present application further provides a connector, which specifically includes the following contents:

[0060] The middle part of the primary coil is filled with high magnetic permeability material; and / or

[0061] The periphery of the primary side coil is wrapped by an insulating layer;

[0062] The middle part of the secondary coil is filled with high magnetic permeability material; and / or

[0063] The outer periphery of the secondary side coil is wrapped by an insulating layer.

[0064] In the embodiment of the present application, the primary coil and the secondary coil structure of the isolation transformer are as follows: Figure 2 As shown, Figure 2This is a schematic diagram of a coil structure proposed in an embodiment of the present application. The primary side coil and the secondary side coil are coupled with each other in space. While realizing energy transfer, the mutual isolation between the primary side and the secondary side of the isolation transformer is achieved, thereby reducing electromagnetic interference.

[0065] However, since the coil itself is highly bendable and has low toughness, in order to ensure the firmness and reliability of the structure, it is necessary to add filling material to the middle part of the coil to support the entire structure and make it a whole. Therefore, in this application, it is proposed to use high magnetic permeability materials to fill the middle part of the coil where energy transfer is required, that is, the area where overlap occurs in the projection plane during coil coupling, to ensure the reliability of energy transfer. For other parts, an insulating layer is used to wrap them, which not only supports the overall structure, but also achieves insulation from other parts to reduce energy leakage.

[0066] In an optional embodiment, the coupling between the primary coil and the secondary coil of the isolation transformer is as follows: Figure 3 As shown, Figure 3 It is a coil coupling schematic diagram proposed in an embodiment of the present application, wherein the primary side coil and the secondary side coil are coupled to each other in space and are filled with high magnetic permeability material for support, the gap between the primary side coil contains cable end pins, the gap between the secondary side coil contains device end pins, and the part not drawn outside is the insulating layer wrapping the coil. When the pins are connected to each other, the primary side coil and the secondary side coil are coupled to each other.

[0067] In combination with the above embodiments, in one implementation, the present application further provides a connector, which specifically includes the following contents:

[0068] The cable end further includes: a first protection circuit, the first protection circuit being interconnected with the primary side coil;

[0069] The first protection circuit is used to achieve at least one of the following: common mode suppression, impedance matching, and surge protection.

[0070] In the embodiment of the present application, different from the related art, the cable end and the device end are distinguished in the part of the isolation transformer. Therefore, the cable end not only includes the primary side coil of the isolation transformer and the cable end pin, but also includes a first protection circuit for electromagnetic protection of the circuit. The first protection circuit is interconnected with the primary side coil, such as Figure 1As shown in , by connecting resistors of the same resistance value in parallel to the primary coil and then connecting capacitors in series and grounding, the functions of common mode suppression, impedance matching and surge protection of the circuit are realized. Optionally, the first protection circuit can be a bob smith circuit, which provides impedance matching for differential signals and performs common mode suppression and surge protection on the signal at the cable end.

[0071] In combination with the above embodiments, in one implementation, the present application further provides a connector, which specifically includes the following contents:

[0072] A first electromagnetic shielding layer is wrapped on the surface of the primary coil at the cable end, the cable end pin and the first protection circuit;

[0073] The first electromagnetic shielding layer is wrapped with a first shielding shell.

[0074] In an embodiment of the present application, the cable end includes the primary side coil of the isolation transformer, the cable end pin and the first protection circuit. The surface of each device at the cable end needs to be wrapped as a whole to enhance the overall anti-electromagnetic interference performance. The present application proposes that the cable end is first wrapped as a whole using a first electromagnetic shielding layer, and outside the first electromagnetic shielding layer, the whole is packaged again using a first shielding shell.

[0075] Specifically, the first electromagnetic shielding layer is an electromagnetic damping material layer. The first electromagnetic shielding layer proposed in the present application is used to wrap the entire cable end, enhance the electromagnetic shielding performance, and prevent electromagnetic energy from radiating from the primary side of the transformer to the secondary side through the radiation path. Therefore, a high magnetic permeability electromagnetic damping material layer is selected for wrapping. Optionally, the electromagnetic damping material layer can be filled with ferrite material, and the first shielding shell outside the first electromagnetic shielding layer can be made of metal material as a metal shielding layer to ensure the thoroughness of insulation.

[0076] The specific structure is shown in Figure 4. Figure 4 This is a connector shielding schematic diagram proposed in an embodiment of the present application. A ferrite layer is wrapped on the outside of the connector pin to improve the electromagnetic shielding performance. Outside the overall wrapping of the ferrite layer, a metal shielding layer is used as an outer shell for packaging to ensure the thoroughness of insulation.

[0077] In combination with the above embodiments, in one implementation, the present application further provides a connector, which specifically includes the following contents:

[0078] a second protection circuit, wherein the second protection circuit is interconnected with the secondary side coil;

[0079] The second protection circuit includes at least one or more of the following: a common mode inductor, an electrostatic protection device, and a surge protection device;

[0080] The common mode inductor is used to filter the common mode electromagnetic interference signal;

[0081] The electrostatic protection device is used to achieve electrostatic protection;

[0082] The surge protection device is used to achieve surge protection.

[0083] In the embodiment of the present application, in the design of electromagnetic protection, there are not only the isolation transformer mentioned above and the first protection circuit appearing at the cable end, but also a variety of protection components. Therefore, a second protection circuit is also provided at the other end of the isolation transformer, that is, the device end of the connector. One side of the second protection circuit is interconnected with the secondary coil of the isolation transformer to receive the signal transmitted by the cable end, and the other side is connected to the device to transmit the circuit signal that has passed the electromagnetic protection to the device. Among them, the second protection circuit may include a variety of components, at least: common mode inductors, electrostatic protection devices, and surge protection devices, such as Figure 1 The content shown in Figure 1 As a schematic diagram of the connector, only the common mode inductor is drawn as a schematic, and other protection components can be connected at the corresponding front and rear positions of the common mode inductor to achieve the effect of electromagnetic protection. Adding a common mode inductor can protect against common mode electromagnetic interference signals, adding an electrostatic protection device can protect against static electricity, and adding a surge protection device can improve the performance of surge resistance.

[0084] Based on the same inventive concept as the design of the first electromagnetic shielding layer mentioned above, correspondingly, at the device end, the secondary coil of the isolation transformer, the device end pins and the surface of the second protection circuit are also wrapped with a second electromagnetic shielding layer;

[0085] A second shielding shell is wrapped outside the second electromagnetic shielding layer;

[0086] The second electromagnetic shielding layer is an electromagnetic damping material layer.

[0087] In the embodiment of the present application, after the design of the circuit on the device side is completed, it is also necessary to wrap the entire circuit on the device side with a second electromagnetic shielding layer and encapsulate it with a second shielding shell. The second electromagnetic shielding layer also chooses to use an electromagnetic damping material layer to improve the performance of electromagnetic shielding while ensuring the thoroughness of insulation.

[0088] In combination with the above embodiments, in one implementation, the present application further provides a connector, which specifically includes the following contents:

[0089] The cable end further comprises: a differential signal cable group, the primary side coil being connected to the differential signal cable group;

[0090] The differential signal cable set includes: fixed-length cables and length-adjustable cables.

[0091] In the embodiment of the present application, a connector for adjusting the cable end is also proposed. The specific method is to set a differential signal cable group at the cable end, and two cables in the same differential signal cable group are respectively connected to the same primary coil in the isolation transformer to form a differential circuit. At the same time, the two cables are a fixed-length cable and an adjustable-length cable, and the order can be ignored. As the name implies, the length of the fixed-length cable remains unchanged, but the length of the adjustable-length cable can be adjusted.

[0092] In the related art, since the coil of the isolation transformer is directly connected to the differential signal routing, the routing length is fixed and cannot be adjusted. Once the two cables in the differential signal circuit of the isolation transformer are unequal in length and asymmetric, the common-mode surge energy will be converted into differential-mode energy, thereby affecting the secondary coil through the isolation transformer, and then affecting the connected equipment, thus losing the meaning of electromagnetic protection. Alternatively, since the related line routing in the circuit board is unequal in length and asymmetric, the overall electromagnetic interference resistance of the connector is affected, which will require repeated modifications to the original design, consuming the time and energy of designers.

[0093] The connector capable of adjusting the cable length proposed in the embodiment of the present application can solve the problems existing in the related art. That is, by using an adjustable cable with adjustable length, when the above-mentioned unequal length and asymmetry exist, the cable length can be adjusted so that the lengths of the two cables in the same differential circuit remain consistent after adjustment, thereby achieving a balanced, symmetrical, and equal-length effect for the overall signal transmission path, thereby maximizing the function of the isolation transformer and protecting the equipment from surge interference.

[0094] Specifically, the length-adjustable cable includes: a fixed-length cable segment and a reserved-length cable segment, and the reserved-length cable segment has a length less than 1 mm.

[0095] In the embodiment of the present application, the proposed length-adjustable cable, in order to achieve the adjustable length, divides a section of cable into two parts, including: a fixed-length cable section and a reserved-length cable section. The reserved-length cable section is cut into different lengths and connected to the fixed-length cable section to form length-adjustable cables of different lengths, thereby achieving the adjustment of the cable length. For a specific implementation, please refer to Figure 5 , Figure 5This is a schematic diagram of a length-adjustable cable proposed in an embodiment of the present application. The cable in the uppermost part shown in the figure is the fixed-length cable segment. By cutting different lengths of the reserved-length cable segment below it and forming an adjustable-length cable together with the cut-off part, the cable length on the other side is kept consistent, thereby achieving a balanced, symmetrical, and equal-length transmission path. It should be noted that if the reserved length of the reserved-length cable segment is too long, it may affect the electromagnetic interference test and the signal transmission quality during actual use. Since the cable length adjustment is required in the actual design, the corresponding problem is usually that the cable length difference is very small. Therefore, the length of the reserved-length cable segment does not need to be too long, and it can be less than 1 mm. In fact, only a few mils may be needed to meet the adjustment needs.

[0096] Furthermore, the cable end further comprises: an adjustment knob;

[0097] The adjusting knob is arranged between the length-adjustable cable and the primary-side coil, and is used to adjust the length of the reserved-length cable segment.

[0098] In the embodiment of the present application, in addition to the design of adjusting the cable length as described above, a tool for adjusting the length needs to be installed. Therefore, an adjustment knob is also included at the cable end. The adjustment knob is arranged on the length-adjustable cable. The adjustment knob is used to adjust the length of the reserved length cable segment. The length is accurately matched by adjusting the knob, so that the cable lengths on both sides of the differential circuit remain consistent.

[0099] Wherein, a single adjustment amount of the reserved length cable segment by the adjusting knob is 1 mil, and a total adjustment amount of the reserved length cable segment by the adjusting knob is less than 1 millimeter.

[0100] Since the connector proposed in this application can be used to transmit high-speed signals such as network signals, the extremely small length difference between cables may have a greater impact on the balanced routing of differential signals, thereby affecting the results of electromagnetic protection. Therefore, the adjustment of the cable length needs to ensure its precision, and a relatively high-precision adjustment knob needs to be used to adjust the cable length. At least the single adjustment amount of the adjustment knob should not exceed 1 mil to ensure the adjustment accuracy, so that the consistency of the cable length is maximized and the isolation transformer can be better utilized. In addition, since the length of the reserved cable segment is not more than 1 mm, the adjustment amount of the adjustment knob should be less than 1 mm.

[0101] Specifically, the number of the differential signal cable groups is at least four, and the number of the adjustment knobs is at least four;

[0102] An adjusting knob is arranged between the length-adjustable cable of each differential signal cable group and the primary-side coil, for adjusting the length of the reserved-length cable segment.

[0103] In one embodiment of the present application, a connector proposed in the present application is applied to the connection circuit of an information socket, which includes four groups of differential signals, so the number of differential signal cable groups should be at least four, and each differential signal cable group requires a corresponding adjustment knob to adjust the cable length, so the number of the adjustment knobs should also be at least four.

[0104] According to the above-mentioned length-adjustable differential signal cable group, the present application also includes a method for locating surge problems. When the surge test does not meet the conditions, the adjustment knob can be adjusted to observe whether it affects the results of the surge test. If the results show a significant difference, it proves that the surge problem may be caused by unbalanced routing. The circuit board design can be checked to adjust each adjustment knob separately, so that each differential circuit routing reaches a balanced state, thereby enhancing the system's ability to resist surges. This method is different from the relevant technology. It only needs to adjust the adjustment knob to locate the fault and optimize the fault. There is no need to modify the existing circuit board design. It can not only speed up the progress of problem reproduction and verification when problems occur, but also shorten the time period for problem adjustment. There is no need to re-make the board, which greatly saves the designer's energy and project costs.

[0105] In combination with the above embodiments, in one implementation, the present application further provides a connector, which specifically includes the following contents:

[0106] The number of cable end pins is N, and the primary side coil is wound around a plurality of cable end pins;

[0107] The number of device-end pins is N, and the secondary-side coil is wound around a plurality of device-end pins, where N is an integer greater than 1.

[0108] In the embodiment of the present application, since the primary coil and the secondary coil of the isolation transformer are separated in the connector as described above, the primary coil and the secondary coil should be respectively wrapped around the cable end pins and the device end pins. Due to design requirements, the number of coils should be consistent with the number of pins and correspond one to one, that is, when the number of cable end pins is N, the primary coil should be wound with corresponding N turns, and each individual coil should be wound around a corresponding pin. Similarly, when the number of device end pins is N, the secondary coil should be wound with corresponding N turns, and each individual coil should be wound around a corresponding pin.

[0109] The embodiments of the present application are described with reference to the flowchart and / or block diagram of the connector according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0110] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0111] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0112] The above is a detailed introduction to a connector provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A connector, characterized in that: include: A cable end, the cable end comprising a primary side coil of an isolation transformer and a cable end pin; A device end, the device end including a secondary coil of the isolation transformer and a device end pin; The number of the cable end pins is N, the number of winding turns of the primary side coil is N, and each coil of the primary side coil is correspondingly wound around one of the cable end pins; The number of the device-side pins is N, the number of turns of the secondary-side coil is N, each coil of the secondary-side coil is wound around one device-side pin, and N is an integer greater than 1; When the cable-end pin and the device-end pin are connected to each other, the primary-side coil correspondingly wound around the cable-end pin and the secondary-side coil correspondingly wound around the device-end pin are coupled to each other.

2. A connector according to claim 1, characterized in that: The middle part of the primary coil is filled with high magnetic permeability material; and / or The primary coil is surrounded by an insulating layer.

3. A connector according to claim 1, characterized in that: The middle part of the secondary coil is filled with high magnetic permeability material; and / or The outer periphery of the secondary side coil is wrapped by an insulating layer.

4. A connector according to claim 2, characterized in that: The cable end further includes: a first protection circuit, the first protection circuit being interconnected with the primary side coil; The first protection circuit is used to achieve at least one of the following: common mode suppression, impedance matching, and surge protection.

5. A connector according to claim 4, characterized in that: A first electromagnetic shielding layer is wrapped on the surface of the primary coil at the cable end, the cable end pin and the first protection circuit; The first electromagnetic shielding layer is wrapped with a first shielding shell.

6. A connector according to claim 5, characterized in that: The first electromagnetic shielding layer is an electromagnetic damping material layer.

7. A connector according to claim 3, characterized in that: The device end also includes: a second protection circuit, wherein the second protection circuit is interconnected with the secondary side coil; The second protection circuit includes at least one or more of the following: a common mode inductor, an electrostatic protection device, and a surge protection device; The common mode inductor is used to filter the common mode electromagnetic interference signal; The electrostatic protection device is used to achieve electrostatic protection; The surge protection device is used to achieve surge protection.

8. A connector according to claim 7, characterized in that: The secondary side coil at the device end, the device end pins and the surface of the second protection circuit are wrapped with a second electromagnetic shielding layer; The second electromagnetic shielding layer is wrapped with a second shielding shell.

9. A connector according to claim 8, characterized in that: The second electromagnetic shielding layer is an electromagnetic damping material layer.

10. The connector according to claim 1, characterized in that: The cable end further comprises: a differential signal cable group, the primary side coil being connected to the differential signal cable group; The differential signal cable set includes: fixed-length cables and length-adjustable cables.

11. A connector according to claim 10, characterized in that: The length-adjustable cable comprises: A fixed-length cable segment and a reserved-length cable segment, wherein the reserved-length cable segment is less than 1 mm in length.

12. A connector according to claim 11, characterized in that: The cable end also includes: an adjustment knob; The adjusting knob is arranged between the length-adjustable cable and the primary-side coil, and is used to adjust the length of the reserved-length cable segment.

13. A connector according to claim 12, characterized in that: Also includes: The single adjustment amount of the reserved length cable segment by the adjustment knob is 1 mil, and the total adjustment amount of the reserved length cable segment by the adjustment knob is less than 1 millimeter.

14. A connector according to claim 12, characterized in that: The number of the differential signal cable groups is at least four, and the number of the adjustment knobs is at least four; An adjusting knob is arranged between the length-adjustable cable of each differential signal cable group and the primary-side coil, for adjusting the length of the reserved-length cable segment.

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