A novel insulating structure supported millimeter wave connector and assembly method thereof

Abstract

The present invention relates to the technical field of millimeter wave connectors, and in particular to a millimeter wave connector supported by a novel insulating structure and an assembly method thereof; the millimeter wave connector comprises a shell, an outer shell, a connecting conductor, an insulating support, a welding sleeve, and a locking sleeve. The assembly method comprises welding the welding sleeve to the outer conductor of the cable; trimming the outer conductor of the cable to expose the inner conductor; welding the pin to the inner conductor; detecting the actual welding temperature, comparing it with the preset standard welding temperature, and adjusting the initial welding temperature; obtaining the welding plan of the pin and the inner conductor, determining the offset of the pin, and adjusting the welding position; pressing the insulating support into the front end of the connector shell; aligning the pin with the hollow hole of the insulating support and inserting it into the jack, detecting the plugging and unplugging force, and threading and tightening the welding sleeve and the connector shell. The present invention more effectively reduces the equivalent dielectric constant of the insulating support by adopting a novel insulating support structure, thereby improving the electrical performance of the millimeter wave connector.

Description

Technical Field

[0001] The invention relates to the technical field of millimeter wave connectors, and in particular to a millimeter wave connector supported by a novel insulating structure and an assembly method thereof. Background Art

[0002] Millimeter wave connector is a connector specially used to transmit high-frequency signals, connect the signal transmission between different devices, and ensure the stable and fast transmission of signals. Its operating frequency range is usually between 30GHz and 300GHz, and it is widely used in wireless communication systems, satellite communications, radar systems and other fields; millimeter wave connectors are developing towards miniaturization, high density, high-speed transmission, and high frequency to meet the needs of modern communication technology; broadly speaking, it is a section of coaxial line, but the structure is complex and requires the introduction of insulating support. There are inevitable manufacturing errors that affect the accuracy. Its design needs to be verified through theoretical analysis and experiments to ensure electrical performance.

[0003] Chinese Patent Publication No.: CN108461957A discloses a millimeter wave connector structure, including a shell, a metal shell, an insulator and a center conductor; the shell is provided with an annular groove for adjusting the transition impedance; the metal shell is fixed inside the shell; the insulator is a thin sheet structure, and the center of the thin sheet structure insulator is provided with a small hole for fixing the center conductor; the insulator is fixed in the metal shell; it can be seen that the millimeter wave connector has the following problems:

[0004] In the existing technical solutions for millimeter wave connectors (such as K-type connectors and 2.4mm connectors), the insulators of the current millimeter wave connectors are in the form of punched holes and annular grooves, which results in low processing accuracy of parts and a very low qualified rate of parts. This defective rate will have an adverse effect on the electrical performance indicators of the finished connector. Summary of the invention

[0005] To this end, the present invention provides a novel insulating structure-supported millimeter wave connector and an assembly method thereof, so as to overcome the problems in the prior art of low machining accuracy of parts and very low qualified rate of parts, which may have an adverse effect on the electrical performance indicators of the finished connector.

[0006] To achieve the above object, the present invention provides a novel method for assembling a millimeter wave connector supported by an insulating structure, comprising:

[0007] Step S1, welding the welding sleeve to the outer conductor layer of the cable;

[0008] Step S2, trimming the outer conductor layer of the cable to expose the inner conductor of the cable;

[0009] Step S3, using a welding compensation gasket to weld the pin to the inner wire of the cable at a target welding point at an initial welding temperature;

[0010] Step S4, during the welding process, the temperature of the target welding point is detected in real time to obtain a number of actual welding temperatures, a temperature change curve is drawn according to the actual welding temperatures, and for any actual welding temperature on the temperature change curve, the actual welding temperature is compared with a preset standard welding temperature to determine the real-time welding situation;

[0011] If the actual welding temperature is lower than the standard welding temperature, it is judged that the actual welding temperature of the pin welded to the wire in the cable is too low; if the actual welding temperature is higher than the standard welding temperature, it is judged that the actual welding temperature of the pin welded to the wire in the cable is too high;

[0012] Acquire the actual change degree of the temperature change curve; when the actual welding temperature is too low based on the real-time welding situation, perform a first-class risk determination according to the actual change degree; when the actual welding temperature is too high based on the real-time welding situation, perform a second-class risk determination according to the actual change degree; and adjust the initial welding temperature accordingly according to the risk determination result;

[0013] Step S5, when the final welding condition is qualified, a welding plane diagram of the plug pin and the wire in the cable is obtained, an offset between the plug pin and the target welding point is determined according to the welding plane diagram, initial welding parameters are adjusted accordingly according to the offset condition to obtain actual welding parameters, and the welding position is adjusted according to the actual welding parameters;

[0014] Step S6, when the welding position is qualified, using an insulation support crimping tool to press the insulation support into the front end of the connector housing;

[0015] Step S7, aligning the insert pin with the hollow hole of the insulating support and inserting it into the insert pin, and screwing and fastening the welding sleeve and the connector housing when the tightness of the insertion is qualified;

[0016] Wherein, the initial welding parameters include the initial welding angle and the initial welding coordinates;

[0017] The final welding condition is that the actual welding temperature after adjustment is equal to the standard welding temperature, and the pin and the inner wire are firmly welded.

[0018] Furthermore, the process of adjusting the initial welding temperature accordingly according to the risk determination result includes:

[0019] When the actual welding temperature is too low, if the derivative value of the temperature change curve is less than zero, it is judged that the actual welding temperature of the pin continues to decrease, and the actual welding temperature is at the first temperature risk level.

[0020] If the derivative value of the temperature change curve is equal to zero, it is judged that the actual welding temperature of the pin remains unchanged and the actual welding temperature is at the first temperature risk level.

[0021] If the derivative value of the temperature change curve is greater than zero, it is judged that the actual welding temperature of the pin is rising and the actual welding temperature is approaching the standard welding temperature;

[0022] When the actual welding temperature is too high, if the derivative value of the temperature change curve is greater than zero, it is judged that the actual welding temperature of the pin continues to rise, and the actual welding temperature is at the second temperature risk level.

[0023] If the derivative value of the temperature change curve is equal to zero, it is judged that the actual welding temperature of the pin remains unchanged and the actual welding temperature is at the second temperature risk level.

[0024] If the derivative value of the temperature change curve is less than zero, it is judged that the actual welding temperature of the pin is decreasing and the actual welding temperature is approaching the standard welding temperature.

[0025] Furthermore, the process of adjusting the initial welding temperature accordingly according to the risk determination result also includes:

[0026] When the actual welding temperature is within the temperature risk level, different temperature expression parameters are set according to different risk levels, and the initial welding temperature is adjusted according to the temperature risk level.

[0027] Among them, when the actual welding temperature is approaching the standard welding temperature, the temperature expression parameter is equal to zero; when the actual welding temperature is at the first temperature risk level, the temperature expression parameter is equal to the preset value of the first temperature expression parameter; when the actual welding temperature is at the second temperature risk level, the temperature expression parameter is equal to the preset value of the second temperature expression parameter; wherein the preset value of the second temperature expression parameter is greater than the preset value of the first temperature expression parameter.

[0028] Further, the process of determining the offset between the pin and the target welding point according to the welding plane diagram includes:

[0029] Generate a welding plane diagram of the pin and the inner wire after welding, determine the center point of the inner wire as the target welding point, divide the center area according to the inner diameter of the pin with the center point as the center of the circle, divide the offset area according to the preset error value, and divide the divided offset area into different offset area levels, monitor whether the pin is in the center area, and send an offset adjustment signal according to the different offset area levels,

[0030] If the pin is detected to be in the center area, it is determined that the pin is coaxial with the inner conductor and no offset occurs, and there is no need to adjust its position;

[0031] If the pin is detected to be in the primary offset area, it is determined that the pin is slightly offset, and the offset of the pin during the welding process is within the allowable error range, and there is no need to adjust its position;

[0032] If it is detected that the pin is located in the secondary offset area, it is determined that the pin has a large offset and an offset adjustment signal is sent.

[0033] Furthermore, the process of dividing the central area according to the inner diameter of the pin with the central point as the center of the circle, dividing the offset area according to the preset error value, and dividing the divided offset area into different offset area levels includes:

[0034] The center of the inner conductor is defined as the center point, and a circular area with the center point as the center and the inner diameter of the pin as the diameter is divided into a central area; a circular area with the center point as the center and the sum of the inner diameter of the pin and a preset error value as the diameter minus the center area is divided into a primary offset area; the area in the plan view other than the circular area with the center point as the center and the sum of the inner diameter of the pin and the preset error value as the diameter is divided into a secondary offset area.

[0035] Furthermore, the process of threading and fastening the welding sleeve and the connector housing when the tightness of the insertion is qualified includes:

[0036] Use the millimeter wave connector jack plug-in and pull-out force detection tooling to detect the plug-in and pull-out force of the pin entering the jack, and compare the plug-in and pull-out force with the preset plug-in and pull-out force. If the plug-in and pull-out force is less than the preset plug-in and pull-out force, it is judged that the plug-in and pull-out force of the pin entering the jack is too small, and the connection between the pin and the jack is not stable enough, which may cause the contact gap between the male and female inner conductors to expand, affecting the risk of signal transmission.

[0037] The present invention also provides a novel millimeter wave connector supported by an insulating structure, comprising:

[0038] The shell has a thread inside, which is fixed and twisted with the welding sleeve through the thread, and the inner wall of the shell is provided with a slot for positioning the insulating support, and the insulating support is embedded in the shell and positioned through the slot;

[0039] An outer shell sleeve is sleeved on the outer side of the shell to increase the friction force on the outer side of the shell;

[0040] The connecting conductor is welded to the end of the inner conductor of the cable and is used to connect the male and female inner conductors;

[0041] An insulating support, which is embedded in the housing and used to support the inner conductor, maintain the coaxial relationship between the inner and outer conductors, and electrically isolate the inner conductor from the outer conductor;

[0042] A welding sleeve, which is welded to the outer conductor layer of the cable, and a threaded structure is arranged on the outside of the welding sleeve;

[0043] A locking sleeve is connected to the housing and is used to connect the welding sleeve and the millimeter wave connector.

[0044] Furthermore, the insulating support is an annular structure, consisting of a metal ring and four insulating sheets. The outer ring of the insulating support is a metal ring, and the metal ring has four grooves inside. The four insulating sheets are embedded in the grooves to support the inner conductor, and the inner conductor of the cable is connected to the coaxial hollow hole formed by the four insulating sheets.

[0045] The connecting conductor is composed of a pin, a socket and a fixing block. The fixing block is used to fix the pin to the inner conductor of the cable. The pin forms an electrical connection by contacting the socket to ensure signal flow between different devices.

[0046] Compared with the prior art, the beneficial effect of the present invention is that the coaxiality of the millimeter wave connector is its important performance indicator. If the relative position relationship between the pin and the inner conductor is not detected, the performance indicators of the millimeter wave connector will be affected. The welding plan of the pin and the inner conductor is generated by the image generation unit, and the offset level of the pin is detected, which improves the accuracy of the connector assembly method and increases the qualified rate of the connector after assembly.

[0047] Furthermore, specifically, if the welding temperature during the welding process of the pin and the inner conductor is not detected and analyzed, the inner conductor will be damaged when the welding temperature is too high, and the welding stability of the pin and the inner conductor will be affected when the temperature is too low. The risk level of the surface temperature during the workpiece grinding process is judged according to the temperature curve and its changing trend, and the initial welding temperature is adjusted to different degrees by setting different temperature expression parameters according to the risk level, thereby increasing the accuracy of the welding process.

[0048] Furthermore, after the pin is welded to the wire in the cable, if the insertion and extraction force between the pin and the socket is not tested, the pin may fall off or cause the risk of widening the contact gap between the male and female inner conductors if the process is not perfect. By testing the insertion and extraction force between the pin and the socket, the completion of the process flow of the millimeter wave connector during assembly can be judged, which reduces the probability of defective connectors and increases the yield of the millimeter wave connector during assembly.

[0049] Furthermore, compared with the six-hole insulation support in the existing low dielectric constant insulation support, the six-hole insulation support removes less dielectric material and has poor electrical performance. The fan-shaped part of the star-shaped insulation support where the insulation material is removed almost reaches the inner conductor, forming a larger space. Therefore, the star-shaped insulation support can obtain a lower equivalent dielectric constant and better electrical performance.

[0050] The advantages of using threaded millimeter-wave connectors mainly include: threaded connection is suitable for high-performance, low-noise environment applications, such as test equipment and military equipment, which can greatly enhance the reliability of the connection; threaded locking connection can effectively prevent loose connection caused by external force or vibration, ensuring the stability of signal transmission; threaded installation method is suitable for millimeter-wave level connectors in various millimeter-wave frequency bands. Signal transmission requirements; in equipment such as millimeter-wave vector network analyzers, threaded adapters can effectively protect precision coaxial interfaces from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 is a flowchart of the steps of the assembly method of the millimeter wave connector in an embodiment of the present invention;

[0052] Figure 2 It is a structural cross-sectional view of a millimeter wave connector supported by a novel insulating structure in an embodiment of the present invention;

[0053] Figure 3 is an interface model diagram of a millimeter wave connector in an embodiment of the present invention;

[0054] Figure 4 The front view a and the side view b of the insulating support in the embodiment of the present invention;

[0055] Figure 5 is a structural cross-sectional view of a connecting conductor in an embodiment of the present invention;

[0056] In the figure: 1-housing, 2-housing sleeve, 31-pin, 32-jack, 33-connecting block, 4-insulating support, 41-metal ring, 42-insulating sheet, 5-welding sleeve, 6-locking sleeve. DETAILED DESCRIPTION

[0057] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0058] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0059] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0060] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] See also Figure 1-Figure 5 As shown, Figure 1 is a flowchart of the steps of the assembly method of the millimeter wave connector in an embodiment of the present invention; Figure 2 It is a structural cross-sectional view of a millimeter wave connector supported by a novel insulating structure in an embodiment of the present invention; Figure 3 is an interface model diagram of a millimeter wave connector in an embodiment of the present invention; Figure 4 The front view a and the side view b of the insulating support in the embodiment of the present invention; Figure 5 4 is a structural cross-sectional view of a connecting conductor in an embodiment of the present invention.

[0062] The present invention provides a novel method for assembling a millimeter wave connector supported by an insulating structure, comprising:

[0063] Step S1, welding the welding sleeve to the outer conductor layer of the cable;

[0064] Step S2, trimming the outer conductor layer of the cable to expose the inner conductor of the cable;

[0065] Step S3, using a welding compensation gasket to weld the pin to the inner wire of the cable at a target welding point at an initial welding temperature;

[0066] Step S4, during the welding process, the temperature of the target welding point is detected in real time to obtain a number of actual welding temperatures, a temperature change curve is drawn according to the actual welding temperatures, and for any actual welding temperature on the temperature change curve, the actual welding temperature is compared with a preset standard welding temperature to determine the real-time welding situation;

[0067] If the actual welding temperature is lower than the standard welding temperature, it is judged that the actual welding temperature of the pin welded to the wire in the cable is too low; if the actual welding temperature is higher than the standard welding temperature, it is judged that the actual welding temperature of the pin welded to the wire in the cable is too high;

[0068] Acquire the actual change degree of the temperature change curve; when the actual welding temperature is too low based on the real-time welding situation, perform a first-class risk determination according to the actual change degree; when the actual welding temperature is too high based on the real-time welding situation, perform a second-class risk determination according to the actual change degree; and adjust the initial welding temperature accordingly according to the risk determination result;

[0069] Step S5, when the final welding condition is qualified, a welding plane diagram of the plug pin and the wire in the cable is obtained, an offset between the plug pin and the target welding point is determined according to the welding plane diagram, initial welding parameters are adjusted accordingly according to the offset condition to obtain actual welding parameters, and the welding position is adjusted according to the actual welding parameters;

[0070] Step S6, when the welding position is qualified, using an insulation support crimping tool to press the insulation support into the front end of the connector housing;

[0071] Step S7, aligning the insert pin with the hollow hole of the insulating support and inserting it into the insert pin, and screwing and fastening the welding sleeve and the connector housing when the tightness of the insertion is qualified;

[0072] Wherein, the initial welding parameters include the initial welding angle and the initial welding coordinates;

[0073] The final welding condition is that the actual welding temperature after adjustment is equal to the standard welding temperature, and the pin and the inner wire are firmly welded.

[0074] In this embodiment, the initial welding temperature when welding the target welding point is Ca, and the preset standard welding temperature is Ce.

[0075] The actual welding temperature C1 of the pin welded to the wire in the cable is detected by an infrared imaging device. The temperature change curve F(x) of the welding point is drawn according to the actual welding temperature, and the derivative function of the temperature change curve F(x) is obtained as f(x). The temperature change curve F(x) of the welding point and its derivative function f(x) are analyzed, and the actual welding temperature C1 is compared with the standard welding temperature Ce.

[0076] If F(ti)<Ce, it is judged that the actual welding temperature of the pin to the inner wire of the cable is too low, the welding stability of the pin and the inner wire of the cable is low, and there is a risk of falling off during use.

[0077] If f(ti) < 0, it is judged that the actual welding temperature of the pin continues to decrease, and the actual welding temperature is at the first temperature risk level, α = α1;

[0078] If f(ti)=0, it is judged that the actual soldering temperature of the pin remains unchanged, and the actual soldering temperature is at the first temperature risk level, α=α1;

[0079] If f(ti)>0, it is judged that the actual welding temperature of the pin is rising and the actual welding temperature is approaching the standard welding temperature Ce, α=0;

[0080] If F(ti)>Ce, it is judged that the actual welding temperature of the pin to the wire in the cable is too high, and there is a risk of damaging the pin and the wire in the cable.

[0081] If f(ti)>0, it is judged that the actual welding temperature of the pin continues to rise, and the actual welding temperature is at the second temperature risk level, α=α2;

[0082] If f(ti)=0, it is judged that the actual soldering temperature of the pin remains unchanged, and the actual soldering temperature is at the second temperature risk level, α=α2;

[0083] If f(ti)<0, it is judged that the actual welding temperature of the pin is decreasing, and the actual welding temperature is approaching the standard welding temperature Ce, α=0;

[0084] Where F(ti) is the welding temperature value of the temperature change curve at any time point ti, f(ti) is the slope of the temperature change curve at any time point ti, and α is the temperature expression parameter of the temperature change curve;

[0085] For the expression parameter α of the temperature change curve, its value is related to the corresponding actual welding temperature C1. The expression parameters of different temperature change curves are set according to different actual welding temperatures. α1 is the preset value of the temperature expression parameter when the temperature is at the first risk level, and α2 is the preset value of the temperature expression parameter when the temperature is at the second risk level, α2>α1;

[0086] When the actual welding temperature of the pin welded to the wire in the cable is at the temperature risk level, adjust the initial welding temperature Ca. Suppose the adjusted initial welding temperature is Cb. When the actual welding temperature is at the first temperature risk level, Cb=Ce÷C1×Ca×α1. When the actual welding temperature is at the second temperature risk level, T1=C1÷Ce×Ca×α2. By adjusting the initial welding temperature Ca, the risk of temperature fluctuation that may occur during the welding process can be reduced.

[0087] Specifically, if the actual welding temperature during the welding process of the pin and the inner conductor is not detected and analyzed, the inner conductor will be damaged if the actual welding temperature is too high, and the welding stability of the pin and the inner conductor will be affected if the temperature is too low. The risk level of the surface temperature during the workpiece grinding process is judged according to the temperature curve and its changing trend, and the initial welding temperature is adjusted to different degrees by setting different temperature expression parameters according to the risk level, thereby increasing the accuracy of the welding process.

[0088] An image generation unit is used to generate a welding plane image of the pin and the inner wire after welding, and the center point of the inner wire is determined as the target welding point. The image generation unit takes the center point as the center of a circle, divides the center area according to the diameter dg of the pin, divides the offset area according to the preset error value de, and divides the divided offset area into different offset area levels, including a primary offset area and a secondary offset area;

[0089] The image generation unit monitors whether the pin is in the center area and sends an offset adjustment signal according to different levels of the offset area.

[0090] If the pin is detected to be in the center area, it is determined that the pin is coaxial with the inner conductor and no offset occurs, and there is no need to adjust its position;

[0091] If the pin is detected to be in the primary offset area, it is determined that the pin is slightly offset, and the offset of the pin during the welding process is within the allowable error range, and there is no need to adjust its position;

[0092] If it is detected that the pin is located in the secondary offset area, it is determined that the pin has a large offset, and the image generation unit sends an offset adjustment signal.

[0093] The center of the inner conductor is set as the center point, and a circular area with the center point as the center and the inner diameter of the pin as the diameter is divided into a central area; a circular area with the center point as the center and the sum of the inner diameter of the pin and a preset error value as the diameter minus the center area is divided into a primary offset area; and an area in the plan view other than the circular area with the center point as the center and the sum of the inner diameter of the pin and the preset error value as the diameter is divided into a secondary offset area.

[0094] Specifically, the coaxiality of the millimeter wave connector is an important performance indicator. If the relative position relationship between the pin and the inner conductor is not detected, the performance indicators of the millimeter wave connector will be affected. The image generation unit generates a welding plan of the pin and the inner conductor, and detects the offset level of the pin, which improves the accuracy of the connector assembly method and increases the qualified rate of the connector after assembly.

[0095] The interface design of the millimeter wave coaxial connector plug and socket is the key to the connector. It not only affects the interchangeability of the product, but also directly affects the electrical performance of the connector. The outer conductor of the connector must be in close contact at the interface, and the gap between the male and female inner conductors will inevitably appear due to the existence of errors. The inner and outer conductors of the millimeter wave connector are filled with air except for a very thin insulating support. Therefore, the connector interface can be regarded as a section of air coaxial line with insulating support. Its interface model is as follows: Figure 3 As shown; where D is the inner diameter of the outer conductor, d is the outer diameter of the inner conductor, dg is the inner conductor pin diameter, A is the distance between the two insulating supports, and B is the thickness of the insulating support.

[0096] Detect the thickness B of the insulating support and the inner diameter D of the outer conductor, and compare the thickness B of the insulating support with the inner diameter D of the outer conductor and the preset thickness Be.

[0097] If B < Be, it is determined that the thickness of the insulation support is too thin to meet the mechanical support requirements of the structure;

[0098] If B≥D, it is determined that the thickness of the insulation support is too large, the resonant frequency of the millimeter wave connector is too large, and the electromagnetic wave propagation is unstable;

[0099] If Be≤B<D, it is determined that the thickness of the insulating support meets the requirements of the resonant frequency and mechanical support.

[0100] Specifically, in a uniform coaxial line, when the dielectric constant is constant, the resonant frequency of the insulating support decreases as the thickness of the insulating support increases. When the thickness of the insulating support is close to the outer conductor diameter D, the electromagnetic wave propagation in the coaxial line is extremely unstable under the effect of the insulating support resonance. Therefore, the insulating support thickness B must be smaller than the outer conductor diameter D. The smaller the insulating support thickness B, the more stable the signal propagation.

[0101] Due to the need for structural mechanical support, the thickness of the insulation support cannot be too thin, which will reduce the stability and straightness of the inner conductor, not only affecting the high-frequency transmission characteristics, but also directly affecting the insertion and mating of the male and female inner conductors, increasing wear and reducing service life. The thickness of the insulation support must be greater than the preset thickness Be.

[0102] After the insulating support is pressed into the front end of the connector housing, the distance from the insulating support to the reference plane is detected.

[0103] In this embodiment, A represents the distance between two insulating supports, A1 represents the distance between one side of an insulating support and the plane where the diameter of the coaxial line suddenly changes. The distance A between the two insulating supports is compared with the diameter D of the outer conductor.

[0104] If A<2D, it is determined that the distance between the insulating supports is too close, the two insulating supports have a large mutual influence, the insulating support crimping tool presses the insulating support into the front end of the connector shell too deep, or the position error of the millimeter wave connector shell slot is large, and the process flow does not meet the use requirements of the millimeter wave connector.

[0105] Specifically, the study of the resonance characteristics of the insulating supports shows that when the distance between the two insulating supports is A=2D, the mutual influence of the two insulating supports is small. When A≥3D, the mutual influence of the two insulating supports can be ignored. For a single millimeter wave connector, each insulating support must be 1~1.5D away from the reference plane. For example, the insulating support of a 3.5mm connector must be 3.5~5.25mm away from the reference plane.

[0106] The millimeter wave connector jack plugging and unplugging force detection tooling is used to detect the plugging and unplugging force F1 of the pin entering the jack, and the plugging and unplugging force F1 is compared with the preset plugging and unplugging force Fe. If F1 < Fe, it is judged that the plugging and unplugging force of the pin entering the jack is too small, and the connection between the pin and the jack is not stable enough, which can easily cause the contact gap between the male and female inner conductors to expand, affecting the degree of signal transmission.

[0107] Specifically, after the pin is welded to the wire inside the cable, if the insertion and extraction force between the pin and the socket is not tested, the pin may fall off or cause the risk of widening the contact gap between the male and female inner conductors if the process is not perfect. By testing the insertion and extraction force between the pin and the socket, the completion of the process flow of the millimeter wave connector during assembly can be judged, which reduces the probability of defective connectors and increases the yield of millimeter wave connectors during assembly.

[0108] The present invention also provides a novel millimeter wave connector supported by an insulating structure, comprising:

[0109] The shell has threads inside, which are fixed and twisted with the welding sleeve through close fit of the threads, and the inner wall is provided with a slot for stably fixing the insulating support inside the shell;

[0110] An outer shell sleeve is sleeved on the outer side of the shell to increase the friction force on the outer side of the shell and play an anti-slip role when the shell and the welding sleeve are fixed and twisted;

[0111] The connecting conductor is welded to the end of the inner conductor of the cable and is used to connect the male and female inner conductors. The connecting conductor is composed of a pin, a socket and a fixing block. The fixing block is used to fix the pin to the inner conductor of the cable. The pin forms an electrical connection by contacting the socket to ensure signal flow between different devices.

[0112] The insulating support is embedded in the shell to support the inner conductor, maintain the coaxial relationship between the inner and outer conductors, ensure the structural stability of the connector, electrically isolate the inner conductor from the outer conductor, prevent current leakage, and ensure the electrical performance of the connector in a high-frequency working environment;

[0113] A welding sleeve, which is welded to the outer conductor layer of the cable, and a threaded structure is arranged on the outside of the welding sleeve;

[0114] A locking sleeve is connected to the housing and is used to firmly connect the cable to the millimeter wave connector.

[0115] The insulating support is an annular structure, consisting of a metal ring and four insulating sheets. The outer ring of the insulating support is a metal ring, and the metal ring has four grooves inside. The four insulating sheets are embedded in the grooves to support the inner conductor, which can more effectively reduce the equivalent dielectric constant of the insulating support. The inner conductor of the cable is connected to the coaxial hollow hole formed by the four insulating sheets.

[0116] Specifically, the method of hollowing out the medium can effectively reduce its equivalent dielectric constant, increase the resonant frequency, and increase the thickness. Through structural designs such as punching holes and setting annular grooves, the insulation support can adjust the impedance of the connector to meet the needs of high-frequency signal transmission;

[0117] Compared with the six-hole insulation support in the existing low dielectric constant insulation support, the six-hole insulation support removes less dielectric material and has poor electrical performance. The fan-shaped part of the insulation material removed from the star-shaped insulation support almost reaches the inner conductor, forming a larger space. Therefore, the star-shaped insulation support can obtain a lower equivalent dielectric constant and better electrical performance.

[0118] The advantages of using threaded millimeter-wave connectors mainly include: threaded connection is suitable for high-performance, low-noise environment applications, such as test equipment and military equipment, which can greatly enhance the reliability of the connection; threaded locking connection can effectively prevent loose connection caused by external force or vibration, ensuring the stability of signal transmission; threaded installation method is suitable for millimeter-wave level connectors in various millimeter-wave frequency bands. Signal transmission requirements; in equipment such as millimeter-wave vector network analyzers, threaded adapters can effectively protect precision coaxial interfaces from damage.

[0119] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0120] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for assembling a millimeter wave connector supported by a novel insulating structure, characterized in that: include, Step S1, welding the welding sleeve to the outer conductor layer of the cable; Step S2, trimming the outer conductor layer of the cable to expose the inner conductor of the cable; Step S3, using a welding compensation gasket to weld the pin to the inner wire of the cable at a target welding point at an initial welding temperature; Step S4, during the welding process, the temperature of the target welding point is detected in real time to obtain a number of actual welding temperatures, a temperature change curve is drawn according to the actual welding temperatures, and for any actual welding temperature on the temperature change curve, the actual welding temperature is compared with a preset standard welding temperature to determine the real-time welding situation; If the actual welding temperature is lower than the standard welding temperature, it is determined that the actual welding temperature of the pin welded to the wire in the cable is too low; If the actual welding temperature is greater than the standard welding temperature, it is judged that the actual welding temperature of the pin welded to the wire in the cable is too high; Acquiring the actual degree of change of the temperature change curve; and performing a risk determination based on the actual degree of change when the actual welding temperature is too low according to the real-time welding condition; When the actual welding temperature is too high based on the real-time welding condition, a second-class risk determination is performed according to the actual degree of change; Adjusting the initial welding temperature accordingly according to the risk determination result; Step S5, when the final welding condition is qualified, a welding plane diagram of the plug pin and the wire in the cable is obtained, an offset between the plug pin and the target welding point is determined according to the welding plane diagram, initial welding parameters are adjusted accordingly according to the offset condition to obtain actual welding parameters, and the welding position is adjusted according to the actual welding parameters; Step S6, when the welding position is qualified, using an insulation support crimping tool to press the insulation support into the front end of the connector housing; Step S7, aligning the insert pin with the hollow hole of the insulating support and inserting it into the insert pin, and screwing and fastening the welding sleeve and the connector housing when the tightness of the insertion is qualified; Wherein, the initial welding parameters include the initial welding angle and the initial welding coordinates; The final qualified welding condition refers to the condition in which the pin and the inner wire are firmly welded.

2. The assembly method of the novel insulating structure-supported millimeter wave connector according to claim 1, characterized in that: The process of adjusting the initial welding temperature accordingly according to the risk determination result also includes calculating the derivative value of the temperature change curve, When the actual welding temperature is too low, if the derivative value of the temperature change curve is less than zero, it is judged that the actual welding temperature of the pin continues to decrease, and the actual welding temperature is at the first temperature risk level; if the derivative value of the temperature change curve is equal to zero, it is judged that the actual welding temperature of the pin remains unchanged, and the actual welding temperature is at the first temperature risk level; if the derivative value of the temperature change curve is greater than zero, it is judged that the actual welding temperature of the pin is rising, and the actual welding temperature is approaching the standard welding temperature; When the actual welding temperature is too high, if the derivative value of the temperature change curve is greater than zero, it is judged that the actual welding temperature of the pin continues to rise, and the actual welding temperature is at the second temperature risk level; if the derivative value of the temperature change curve is equal to zero, it is judged that the actual welding temperature of the pin remains unchanged, and the actual welding temperature is at the second temperature risk level; if the derivative value of the temperature change curve is less than zero, it is judged that the actual welding temperature of the pin is decreasing, and the actual welding temperature is approaching the standard welding temperature.

3. The assembly method of the novel insulating structure-supported millimeter wave connector according to claim 2, characterized in that: The process of adjusting the initial welding temperature accordingly according to the risk determination result also includes: When the actual welding temperature is within the temperature risk level, different temperature expression parameters are set according to different risk levels, and the initial welding temperature is adjusted according to the temperature risk level. Among them, when the actual welding temperature is approaching the standard welding temperature, the temperature expression parameter is equal to zero; when the actual welding temperature is at the first temperature risk level, the temperature expression parameter is equal to the preset value of the first temperature expression parameter; when the actual welding temperature is at the second temperature risk level, the temperature expression parameter is equal to the preset value of the second temperature expression parameter; wherein the preset value of the second temperature expression parameter is greater than the preset value of the first temperature expression parameter.

4. The assembly method of the novel insulating structure-supported millimeter wave connector according to claim 3 is characterized in that: The process of determining the offset between the pin and the target welding point according to the welding plane diagram includes: Generate a welding plane diagram of the pin and the inner wire after welding, determine the center point of the inner wire as the target welding point, divide the center area according to the inner diameter of the pin with the center point as the center of the circle, divide the offset area according to the preset error value, and divide the divided offset area into different offset area levels, monitor whether the pin is in the center area, and send an offset adjustment signal according to the different offset area levels, If the pin is detected to be in the center area, it is determined that the pin is coaxial with the inner conductor and no offset occurs, and there is no need to adjust its position; If the pin is detected to be in the primary offset area, it is determined that the pin is slightly offset, and the offset of the pin during the welding process is within the allowable error range, and there is no need to adjust its position; If it is detected that the pin is located in the secondary offset area, it is determined that the pin has a large offset and an offset adjustment signal is sent.

5. The assembly method of the novel insulating structure-supported millimeter wave connector according to claim 4, characterized in that: The process of dividing the central area according to the inner diameter of the pin with the central point as the center of the circle, dividing the offset area according to the preset error value, and dividing the divided offset area into different offset area levels includes: The center of the inner conductor is defined as the center point, and a circular area with the center point as the center and the inner diameter of the pin as the diameter is divided into a central area; a circular area with the center point as the center and the sum of the inner diameter of the pin and a preset error value as the diameter minus the center area is divided into a primary offset area; the area in the plan view other than the circular area with the center point as the center and the sum of the inner diameter of the pin and the preset error value as the diameter is divided into a secondary offset area.

6. The assembly method of the novel insulating structure-supported millimeter wave connector according to claim 5, characterized in that: The process of threading and fastening the welding sleeve and the connector housing when the tightness of the insertion is qualified includes: Use the millimeter wave connector jack plug-in and pull-out force detection tooling to detect the plug-in and pull-out force of the pin entering the jack, and compare the plug-in and pull-out force with the preset plug-in and pull-out force. If the plug-in and pull-out force is less than the preset plug-in and pull-out force, it is judged that the plug-in and pull-out force of the pin entering the jack is too small, and the connection between the pin and the jack is not stable enough, which may cause the contact gap between the male and female inner conductors to expand, affecting the risk of signal transmission.

7. A novel millimeter wave connector supported by an insulating structure, an assembly method of the novel millimeter wave connector supported by an insulating structure according to any one of claims 1 to 6, characterized in that: include, The shell has a thread inside, which is fixed and twisted with the welding sleeve through the thread, and the inner wall of the shell is provided with a slot for positioning the insulating support, and the insulating support is embedded in the shell and positioned through the slot; An outer shell sleeve is sleeved on the outer side of the shell to increase the friction force on the outer side of the shell; The connecting conductor is welded to the end of the inner conductor of the cable and is used to connect the male and female inner conductors; An insulating support, which is embedded in the housing and used to support the inner conductor, maintain the coaxial relationship between the inner and outer conductors, and electrically isolate the inner conductor from the outer conductor; A welding sleeve, which is welded to the outer conductor layer of the cable, and a threaded structure is arranged on the outside of the welding sleeve; A locking sleeve is connected to the housing and is used to connect the welding sleeve and the millimeter wave connector.

8. The novel insulating structure-supported millimeter wave connector according to claim 7, characterized in that: The insulating support is an annular structure, consisting of a metal ring and four insulating sheets. The outer ring of the insulating support is a metal ring, and the metal ring has four grooves inside. The four insulating sheets are embedded in the grooves to support the inner conductor. The inner conductor of the cable is connected to the coaxial hollow hole formed by the four insulating sheets. The connecting conductor is composed of a pin, a socket and a fixing block. The fixing block is used to fix the pin to the inner conductor of the cable. The pin forms an electrical connection by contacting the socket to ensure signal flow between different devices.

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