Radio frequency connector

Abstract

The utility model relates to a radio frequency connector, which comprises a shell, a connecting part and a positioning part. The shell is provided with a mounting chamber, an annular positioning bulge is arranged on the inner wall of the mounting chamber, and a plurality of convex ribs are arranged on the inner edge of the annular positioning bulge; the connecting part is arranged in the mounting chamber and sequentially comprises a cylindrical central conductor, an insulator and a cylindrical outer conductor from inside to outside; the outer conductor is in interference fit with the annular positioning bulge through the convex rib; the outer wall of the outer conductor is provided with a solid clamping protrusion. The fixing part comprises a tubular wire clamp and a lock catch; the tubular wire clamp is sleeved outside the outer conductor, the side wall of the tubular wire clamp is provided with a clamping groove, and the clamping groove is correspondingly clamped with the solid clamping bulge; the lock catch comprises an extending end used for fixing the tubular wire clamp and the shell; the rear end of the tubular wire clamp is provided with an outward flange, and the flange is fixedly clamped between the extension end and the annular positioning projection. The radio frequency connector can reduce radio frequency signal transmission characteristic impedance and improve radio frequency signal transmission quality.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a radio frequency connector. Background Art

[0002] On-board RF connectors are important components for RF signal transmission and are widely used in automotive communication systems. They consist of an outer conductor, a center conductor, and an insulator. The outer conductor, center conductor, and insulator are assembled and fixedly mounted in a plastic housing. The outer conductor and center conductor are typically made of materials such as brass, phosphor bronze, and beryllium copper, with platings such as tin and nickel. The center conductor is used for RF signal transmission, while the outer conductor serves as a reference layer for RF signal transmission. The consistency of the outer and center conductor structures can affect the characteristic impedance of the connector. The greater the characteristic impedance, the worse the signal transmission quality of the RF connector. The insulator is used to isolate the outer conductor from the center conductor, and insulator materials include PE, PBT, PA, PP, and LCP.

[0003] Existing products feature two or more annular convex structures spaced apart on the outer conductor. Annular grooves corresponding to these structures are also provided on the inner wall of the outer shell, allowing the convex structures to be snapped into place and prevented from retraction. However, these annular convex structures are typically manufactured using a stamping process, which places high demands on the precision of the stamping die. This results in the convex bulges being prone to deformation, cracking, and dimensional instability, leading to production anomalies and low production efficiency. Furthermore, existing products are often assembled and fixed using multiple extrusion methods, resulting in poor connection stability. Furthermore, the various convex structures on the outer conductor can cause sudden changes in the product's characteristic impedance, resulting in significant signal reflections, impacting RF signal transmission performance and failing to meet higher signal integrity requirements. Summary of the Invention

[0004] The embodiments of the present invention provide a radio frequency connector to solve the problems of poor installation stability of the radio frequency connector, more signal reflections caused by sudden changes in signal transmission characteristic impedance, and poor signal transmission quality.

[0005] The present disclosure provides a radio frequency connector, comprising: a housing defining a front-to-back connected mounting chamber, wherein the inner wall of the mounting chamber protrudes inwardly to form an annular positioning protrusion, dividing the mounting chamber into a front mounting chamber and a rear mounting chamber; a plurality of ribs are provided on the inner edge of the annular positioning protrusion; a connecting portion is provided in the mounting chamber and extends through the front mounting chamber and the rear mounting chamber, the connecting portion comprising, from the inside to the outside, a cylindrical center conductor, an insulator, and a cylindrical outer conductor; the outer conductor and the annular positioning protrusion form an interference fit via the ribs; a physical locking protrusion is provided on the outer wall of the outer conductor located in the front mounting chamber; a fixing portion comprising a tubular wire clamp and a locking buckle; the tubular wire clamp sleeve is provided on the outside of the outer conductor, and a locking groove is defined on the side wall of the tubular wire clamp, the locking groove correspondingly engaging with the physical locking protrusion; the locking buckle is fixedly mounted on the housing, the locking buckle comprising a protruding end, the protruding end passing through the housing and embedded in the front mounting chamber; the rear end of the tubular wire clamp is provided with an outward flange, the flange fixedly locking between the protruding end and the annular positioning protrusion.

[0006] In one embodiment, the length of the rib in the front-to-back direction is greater than 10 mm.

[0007] In one embodiment, the ribs are evenly distributed along the circumferential direction on the inner edge of the annular positioning protrusion, and the ribs are arc-shaped along the circumferential direction.

[0008] In one embodiment, the outer conductor includes a fixed section, a mating section and a contact section connected in sequence; the outer diameter of the fixed section is larger than the outer diameter of the mating section, and the outer diameter of the mating section is larger than the outer diameter of the contact section; the fixed section is used to achieve an interference fit with the annular positioning protrusion; the physical clamping protrusion is provided on the mating section, and the tubular wire clamp and the mating section are interference fit; the contact section is inserted into the tubular wire clamp for contacting and connecting with the outer conductor of the connected cable.

[0009] In one embodiment, the tubular wire clamp includes a first clamping section and a second clamping section connected in sequence; the flange is provided at the end of the first clamping section, the first clamping section is sleeved outside the mating section and has an interference fit with the mating section; the second clamping section and the contact section clamp the outer conductor of the cable.

[0010] In one embodiment, the contour of the lower end surface of the protruding end is aligned with the contour of the outer wall of the first clamping section.

[0011] In one embodiment, the central conductor is provided with a riveting section corresponding to the mating section, for riveting connection with the inner core conductor of the connected cable.

[0012] In one embodiment, the insulator is provided with a conductor pipe, the rear end of the center conductor is inserted into the conductor pipe and tightly fits with the conductor pipe; the outer wall of the center conductor is provided with a first limiting rod corresponding to the end face of the conductor pipe, and the first limiting rod is in contact with the end face of the conductor pipe.

[0013] In one embodiment, the central conductor corresponding to the fixed section is an elastic plug-in section for inserting and clamping the connected conductor.

[0014] In one embodiment, the housing is provided with a lock mounting chamber corresponding to the mating section, the lock mounting chamber is provided with a socket connected to the front mounting chamber, and the protruding end extends through the socket to the front side of the flange.

[0015] In one embodiment, the shell further includes a second limiting rod, which extends from the wall of the socket into the socket; a limiting groove is provided at the protruding end, and the second limiting rod is embedded in the limiting groove to limit the relative position of the lock buckle and the shell.

[0016] The above RF connector has at least the following beneficial effects:

[0017] An annular positioning protrusion is provided inside the housing. The outer conductor is inserted into the housing and sized to fit the annular positioning protrusion. Multiple ribs are provided on the inner edge of the annular positioning protrusion. The ribs reduce the inner diameter of the annular positioning protrusion, creating an interference fit between the annular positioning protrusion and the outer conductor, thereby increasing the outer conductor's installation stability. The annular positioning protrusion also divides the housing into a front installation chamber and a rear installation chamber, accurately separating the installation positions of the devices connected to each end of the connector and improving installation accuracy. A tubular wire clamp is positioned over the outer conductor and secured to the housing via a locking latch, improving the structural consistency between the outer conductor and the center conductor and reducing the impact of characteristic impedance. A physical locking protrusion and a slotted connection are used, while a flange is provided to abut the end face of the annular positioning protrusion and a removable locking latch is added for locking engagement. This significantly improves installation stability and facilitates assembly and disassembly. It also reduces the structural requirements of the outer conductor due to positioning, thereby improving the structural consistency between the outer conductor and the center conductor and reducing the impact of characteristic impedance on RF signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1Schematic diagram of the cross-sectional structure of a radio frequency connector according to an embodiment;

[0020] Figure 2 This is a schematic structural diagram of a radio frequency connector according to an embodiment;

[0021] Figure 3 for Figure 2 Schematic diagram of the middle A direction;

[0022] Figure 4 This is a schematic structural diagram of a housing according to an embodiment;

[0023] Figure 5 This is a schematic structural diagram of a tubular wire clamp according to an embodiment;

[0024] Figure 6 This is a schematic structural diagram of a lock buckle according to an embodiment;

[0025] Figure 7 is a schematic structural diagram of an outer conductor according to an embodiment;

[0026] Figure 8 is a schematic structural diagram of a central conductor according to an embodiment;

[0027] Figure 9 is a schematic structural diagram of an insulator according to an embodiment;

[0028] Figure 10 is a schematic cross-sectional structural diagram of an insulator according to an embodiment;

[0029] Figure 11 This is a schematic structural diagram of a housing according to an embodiment;

[0030] Figure 12 For the Figure 1 Schematic diagram of the cross-sectional structure in the AA direction;

[0031] Figure 13 A schematic diagram of a radio frequency connector simulation interface according to an embodiment;

[0032] Figure 14 For application Figure 13 Perform simulation on the interface shown to obtain a simulation data;

[0033] Figure 15 For application Figure 13 Perform simulation on the interface shown to obtain another simulation data;

[0034] Figure 16 For application Figure 13 Perform simulation on the interface shown to obtain another simulation data.

[0035] Reference numerals:

[0036] 10. RF connector; 11. Housing; 111. Front mounting chamber; 112. Rear mounting chamber; 113. Annular positioning protrusion; 1131. Raised rib; 114. Locking mounting compartment; 1141. Jack; 115. Second limiting rod; 116. Block; 12. Connecting portion; 121. Center conductor; 1211. Riveted section; 1212. First limiting rod; 1213. Elastic plug section; 122. Insulator; 1221. Conductor conduit; 122 2. Fastening protrusion; 123. Outer conductor; 1231. Physical locking protrusion; 1232. Fixing section; 1233. Fitting section; 1234. Contact section; 13. Fixing portion; 131. Tubular wire clamp; 1311. Clamping groove; 1312. Flanged edge; 1313. First clamping section; 1314. Second clamping section; 132. Locking buckle; 1321. Extended end; 1322. Limiting groove; 1323. Clamping hole; 1324. Top surface; 1325. Side surface. DETAILED DESCRIPTION

[0037] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to facilitate a more thorough and comprehensive understanding of the disclosure of the present invention.

[0038] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there can be an element in the middle. When an element is said to be "connected to" another element, it can be directly connected to the other element or there can be an element in the middle. The terms "vertical", "horizontal", "left",

[0039] "Right" and similar expressions are for illustrative purposes only. Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this utility model belongs. The terms used herein in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0040] refer to Figures 1 to 16As shown, the utility model discloses a radio frequency connector 10, comprising a housing 11, a connecting portion 12 and a fixing portion 13. The housing 11 defines an installation chamber that is connected front to back. The interior contour of the installation chamber is cylindrical and connected front to back. The inner wall of the installation chamber is provided with a fixing structure for fixing and connecting the connected parts. The inner wall of the installation chamber protrudes inward to form an annular positioning protrusion 113. The annular positioning protrusion 113 is provided in the middle position of the front-to-back direction of the installation chamber, dividing the installation chamber into a front installation chamber 111 and a rear installation chamber 112, so that the front installation chamber 111 and the rear installation chamber 112 have sufficient length to fix the connected parts. The inner edge of the annular positioning protrusion 113 is provided with a plurality of ribs 1131. The ribs 1131 are connected to the annular positioning protrusion 113 in the front-to-back direction of the installation chamber with an inclined surface. During the insertion of the outer conductor 123 into the annular positioning protrusion 113, the inclined surface of the rib 1131 plays a transition guide role, which facilitates installation. The connecting portion 12 is located within the installation chamber and extends through the front installation chamber 111 and the rear installation chamber 112. From the inside out, the connecting portion 12 comprises a cylindrical center conductor 121, an insulator 122, and a cylindrical outer conductor 123. The outer conductor 123 is sleeved over the insulator 122, which in turn is sleeved over the center conductor 121. The insulator 122 is secured to the inner wall of the outer conductor 123 by an interference fit. A cylindrical socket is provided within the insulator 122, and the center conductor 121 is inserted into the socket of the insulator 122, tightly fitting with the inner wall of the socket of the insulator 122. The front diameter of the socket of the insulator 122 is larger than the rear diameter, and the center conductor 121 is inserted into the insulator 122 from the front to the rear. The outer conductor 123 forms an interference fit with the annular positioning protrusion 113 via a rib 1131, which clamps the outer conductor 123. The fixing portion 13 includes a tubular clamp 131 and a locking buckle 132. The tubular clamp 131 is sleeved over the outer conductor 123, and a slot 1311 is defined in the side wall of the tubular clamp 131. The outer wall of the outer conductor 123, located within the front mounting chamber 111, is provided with a physical locking protrusion 1231, which snaps into the slot 1311 to achieve a snap-on fixation. The locking buckle 132 is fixedly mounted to the housing 11 and is fixedly connected to the outer wall of the housing 11. The locking buckle 132 includes an extended end 1321, which extends through the housing 11 and is embedded in the front mounting chamber 111. The rear end of the tubular clamp 131 is provided with an outward flange 1312, which is fixedly snapped between the extended end 1321 and the annular positioning protrusion 113. The extended end 1321 and the annular positioning protrusion 113 clamp the flange 1312 to secure the tubular clamp 131. The clamping connection between the tubular clamp 131 and the outer conductor 123 further secures the outer conductor 123. Simultaneously, the rear end of the tubular clamp 131 is sleeved over the outer conductor 123, achieving a tight fit. The outer conductor 123 is locked in place by the dual fixation of the tubular clamp 131 and the annular positioning protrusion 113.

[0041] Exemplarily, the installation of the RF connector 10 includes the following steps:

[0042] Insert the insulator 122 into the outer conductor 123. The fastening protrusion 1222 on the outside of the insulator 122 has a tapered profile. The insulator 122 is inserted into the outer conductor 123 from back to front. The small end of the tapered profile of the fastening protrusion 1222 first enters the outer conductor 123. As the large end of the tapered profile of the fastening protrusion 1222 enters the outer conductor 123, the insulator 122 and the outer conductor 123 gradually achieve a tight fit.

[0043] The core conductor of the coaxial cable is riveted to one end of the center conductor 121. The other end of the center conductor 121 is inserted from front to back into the insulator 122. Simultaneously, the contact section 1234 of the outer conductor 123 is inserted between the outer conductor and the insulation layer of the coaxial cable. The first stopper 1212 of the center conductor 121 is located between the riveted section 1211 and the elastic plug section 1213. When the elastic plug section 1213 is fully inserted into the insulator 122, the first stopper 1212 abuts the front end of the conductor tube 1221. At this point, the riveted section 1211 aligns with the mating section 1233 of the outer conductor 123.

[0044] Insert the outer conductor 123 into the installation chamber until the fixing section 1232 of the outer conductor 123 mates with the annular positioning protrusion 113. The junction between the fitting section 1233 and the fixing section 1232 aligns with the front end of the annular positioning protrusion 113. The outer conductor 123 can be inserted from front to back or from back to front. If the outer conductor 123 is inserted from back to front, the installation sequence needs to be adjusted: first, insert the outer conductor 123 into the housing 11 from back to front, then insert the assembly of the insulator 122 and the center conductor 121 into the outer conductor 123 from front to back.

[0045] Insert the tubular clamp 131 from front to back into the front installation chamber 111 until the flange 1312 abuts against the front end of the annular positioning protrusion 113, and the physical locking protrusion 1231 is locked into the locking groove 1311. Make the first clamping section 1313 of the tubular clamp 131 correspond to the matching section 1233.

[0046] The lock buckle 132 is mounted on the housing 11 so that the protruding end 1321 abuts the front side of the flange 1312. The lock buckle 132 is first fastened to the lock buckle mounting compartment 114 of the housing 11. The protruding end 1321 abuts the flange 1312 of the tubular wire clamp 131. Simultaneously, the second limiting rod 115 engages with the limiting groove 1322, and the locking hole 1323 and the locking block 116 are used to achieve a locking connection, so that the end of the protruding end 1321 engages the outer wall of the tubular wire clamp 131.

[0047] In one embodiment, the rib 1131 has a length in the front-to-back direction of greater than 10 mm. The outer conductor 123 is inserted into the annular positioning protrusion 113, which clamps the outer conductor 123 via the rib 1131. Furthermore, the contact length between the rib 1131 and the outer conductor 123 in the front-to-back installation direction is greater than 10 mm, thereby limiting both front-to-back and circumferential motion of the outer conductor 123 and also limiting its rotation in the front-to-back direction.

[0048] refer to Figures 1 to 3 As shown, the ribs 1131 are evenly distributed along the circumferential direction on the inner edge of the annular positioning protrusion 113, and the ribs 1131 are arc-shaped along the circumferential direction and convex in the middle, so that the outer conductor 123 is in linear contact with each rib 1131 to reduce the resistance of the outer conductor 123 inserted into the annular positioning protrusion 113.

[0049] refer to Figures 1 to 7 As shown, the outer conductor 123 includes a fixed section 1232, a mating section 1233, and a contact section 1234, which are connected in sequence. The outer diameter of the fixed section 1232 is larger than that of the mating section 1233, which in turn is larger than that of the contact section 1234. The fixed section 1232 is designed to achieve an interference fit with the annular positioning protrusion 113. The junction between the fixed section 1232 and the mating section 1233 corresponds to the front end surface of the annular positioning protrusion 113. A physical locking protrusion 1231 is provided protruding from the mating section 1233. The tubular clamp 131 is sleeved over the outer conductor 123. A slit is defined in the sidewall of the tubular clamp 131. When the tubular clamp 131 is sleeved over the outer conductor 123, it is stretched open to form an interference fit with the mating section 1233. The flange 1312 of the tubular clamp 131 abuts the front end surface of the annular positioning protrusion 113. The contact section 1234 is inserted into the tubular clamp 131 and is in contact with the outer conductor of the connected cable.

[0050] refer to Figures 1 to 5 As shown, tubular clamp 131 includes a first clamping section 1313 and a second clamping section 1314 connected in sequence. A flange 1312 and a slot 1311 are both provided at the end of first clamping section 1313. First clamping section 1313 is sleeved over mating section 1233 and forms an interference fit therewith. The physical latching protrusion 1231 of mating section 1233 snaps into slot 1311. Second clamping section 1314 is sleeved over contact section 1234 and, together with contact section 1234, clamps the outer conductor of the cable.

[0051] refer to Figure 1 、 Figure 6 and Figure 12As shown, the lower end surface of the extension end 1321 conforms to the outer wall contour of the first clamping section 1313. Extension end 1321 extends into housing 11 through a latch mounting compartment 114 on one side of housing 11. Extension end 1321 has an arcuate end, and the outer wall of tubular clamp 131 also has an arcuate end. When extension end 1321 is inserted into the mounting chamber, the arcuate end of extension end 1321 mates with the outer wall of tubular clamp 131 to prevent movement of tubular clamp 131.

[0052] like Figure 12 As shown, there are at least two protruding ends 1321 , which are spaced apart. The second limiting rod 115 is inserted into the gap between two adjacent protruding ends 1321 along the front-to-back direction to limit the movement of the lock buckle 132 .

[0053] refer to Figures 1 to 8 As shown, the center conductor 121 is provided with a riveted section 1211 corresponding to the mating section 1233, which is used to rivet the inner core conductor of the connected cable. A first limiting rod 1212 is located between the riveted section 1211 and the elastic plug-in section 1213. The riveted section 1211 is riveted to the inner core conductor of the connected cable. The elastic plug-in section 1213 drives the riveted section 1211, with the inner core conductor of the cable riveted, into the insulator 122. When the riveted section 1211 moves to mate with the mating section 1233, the first limiting rod 1212 abuts against the front end of the conductor conduit 1221 to prevent the riveted section 1211 from further backward movement. The elastic plug-in section 1213 is tightly fitted with the conductor conduit 1221. The elastic plug-in section 1213 is hollow and is used to plug into other connected components to connect the connected cable to the other connected components.

[0054] refer to Figures 1 to 10 As shown, the insulator 122 is provided with a conductor tube 1221, and the rear end of the center conductor 121 is inserted into the conductor tube 1221 and tightly fits with the conductor tube 1221; a first limiting rod 1212 is protruded from the outer wall of the center conductor 121 corresponding to the end face of the conductor tube 1221, and the first limiting rod 1212 is in contact with the end face of the conductor tube 1221.

[0055] In some embodiments, as Figures 1 to 10As shown, the outer wall of the insulator 122 is provided with a fastening protrusion 1222. The front end of the fastening protrusion 1222 is connected to the outer wall of the insulator 122 via an inclined surface. During installation, the insulator 122 is inserted into the outer conductor 123 from the back to the front. The inclined surface first enters the outer conductor 123, and the fastening protrusion 1222 then enters the outer conductor 123. The outer end of the fastening protrusion 1222 contacts the inner wall of the outer conductor 123. The outer diameter of the fastening protrusion 1222 is larger than the inner diameter of the outer conductor 123, so that the fastening protrusion 1222 and the outer conductor 123 form a tight fit, fixing the relative position between the insulator 122 and the outer conductor 123. The insulator 122 is made of a material with a certain degree of elasticity, including rubber or plastic, to reduce the difficulty of inserting the insulator 122 into the outer conductor 123. At the same time, when rubber or plastic is used in conjunction with the outer conductor 123, it can have greater friction than rigid materials, which can better fix the relative position between the insulator 122 and the outer conductor 123.

[0056] refer to Figures 1 to 8 As shown, the center conductor 121 corresponding to the fixed section 1232 also includes an elastic plug-in section 1213 for inserting and clamping the connected conductor. The elastic plug-in section 1213 is hollow in the middle, and the side walls are provided with openings. When the connected conductor is inserted in the middle, the connected conductor stretches the elastic plug-in section 1213, and the connected conductor is clamped under the self-restoring force of the elastic plug-in section 1213. The length of the elastic plug-in section 1213 corresponds to the length of the conductor tube 1221. The rear end of the elastic plug-in section 1213 is provided with a trumpet-shaped limit plate. After the center conductor 121 is inserted into the insulator 122, the first limit guide rod abuts the front end of the conductor tube 1221 to limit the center conductor 121 from moving backward relative to the insulator 122. The trumpet-shaped limit plate at the rear end of the elastic conductor abuts the rear end of the insulator 122, limiting the forward movement of the center conductor 121, thereby fixing the relative position of the center conductor 121 and the insulator 122.

[0057] refer to Figures 1 to 12 As shown, the housing 11 is provided with a lock mounting chamber 114 corresponding to the matching section 1233, and the lock mounting chamber 114 is provided with a socket 1141 communicating with the front mounting chamber 111, and the protruding end 1321 extends through the socket 1141 to the front side of the flange 1312. Figure 4 As shown, the lock mounting chamber 114 includes a groove formed on the front side wall of the housing 11, the groove is connected to the front mounting chamber 111 through the insertion hole 1141, and the side walls of the housing 11 corresponding to both sides of the groove are provided with a card block 116. Figure 6As shown, the lock buckle 132 includes a top surface 1324 and side surfaces 1325 adjacent to and located on either side of the top surface 1324. The side surfaces 1325 are provided with locking holes 1323 corresponding to the locking blocks 116. The lock buckle 132 is buckled into the groove of the housing 11 to close the insertion hole 1141. The locking holes 1323 on the two sides of the lock buckle 132 are fixedly engaged with the corresponding locking blocks 116. The front end of the lock buckle 132 is provided with an extension 1321, which is perpendicular to the top surface 1324 of the lock buckle 132. When the lock buckle 132 is buckled into the groove, the extension 1321 passes through the insertion hole 1141, is inserted into the front installation chamber 111, and is in contact with the outer wall of the tubular wire clamp 131.

[0058] refer to Figures 1 to 12 As shown, the housing 11 further includes a second limiting rod 115, which extends from the wall of the insertion hole 1141 into the insertion hole 1141. Figure 11 As shown, the second limiting rod 115 extends from front to rear and is tilted downward from top to bottom (i.e., tilted radially toward the installation chamber). A limiting slot 1322 is defined at the protruding end 1321 of the second limiting rod 115, corresponding to the second limiting rod 115. The second limiting rod 115 is inserted into the limiting slot 1322 to limit the relative position of the lock catch 132 and the housing 11. The side walls of the limiting slot 1322 abut against the side walls of the second limiting rod 115. The second limiting rod 115 is inserted into the limiting slot 1322 at an angle from top to bottom. After the lock catch 132 is snap-fitted and installed with the housing 11, the upper surface of the second limiting rod 115 abuts against the bottom of the limiting slot 1322 to limit the protruding end 1321 of the lock catch 132 to abut against the outer wall of the tubular wire clamp 131. This ensures that the components of the RF connector 10 remain stable and prevent movement when used in a vibrating environment.

[0059] In the embodiment of the present disclosure, a simulation test was conducted on the radio frequency signal transmission performance of the radio frequency connector 10. The specific testing method is as follows:

[0060] (1) Set the simulation parameters of the simulation software.

[0061] (2) Import the RF connector 10 model into the simulation software.

[0062] (3) Adjust the test signal frequency to 0 to 6 GHz.

[0063] (4) Record the voltage standing wave ratio, insertion loss and return loss respectively.

[0064] The various parameter standards defined in the fifth edition of the USCAR17 automotive RF connector system performance specification are shown in Table 1 below:

[0065] Table 1

[0066]

[0067] According to Table 1, the fifth edition of the USCAR17 standard defines the performance specifications of automotive RF connector systems.

[0068] When the frequency is 3 to 6 GHz, the voltage standing wave ratio is 1.6, the return loss is 12.74 dB, and the insertion loss is 0.45 dB. The voltage standing wave ratio refers to the ratio of the standing wave antinode voltage to the node voltage amplitude, also known as the standing wave coefficient or standing wave ratio. When the standing wave ratio is equal to 1, it means that the impedance of the feeder and the antenna is completely matched. At this time, all the high-frequency energy is radiated by the antenna, and there is no energy reflection loss. When the standing wave ratio is infinite, it means total reflection, and no energy is radiated. Therefore, the ideal value of the voltage standing wave ratio is 1. The closer to 1, the better the signal transmission performance. Return loss, also known as reflection loss, indicates that part of the incident power is reflected back to the signal source. Return loss is the ratio of the reflected wave power to the incident wave power at the transmission line port, expressed as an absolute value in logarithmic form, and the unit is dB. For example, if 1mW (0dBm) of power is injected and 10% is reflected (rebounded), mathematically, the return loss is -10 log [(reflected power) / (incident power)], with an absolute value of 10, resulting in a return loss of 10dB. Return loss is the reflection caused by impedance mismatch in a cable link, reflecting the reflection of the pair of wires themselves. This mismatch primarily occurs at the connector, but it can also occur at locations within the cable where the characteristic impedance varies. Return loss introduces signal fluctuations, causing the returned signal to be mistaken for the received signal in a duplex Gigabit network, resulting in interference. At high frequencies, this parameter reflects the proportion of traveling waves reflected at the "transition point" of the protection device. This parameter directly measures the degree of matching between the protection device and the system's surge impedance. Generally speaking, a higher return loss value indicates less reflected signal energy and better transmission performance. Insertion loss represents the ratio of transmitted power to input power. Under ideal matching conditions, insertion loss is minimized.

[0069] according to Figures 13 to 16 As shown, the RF connector 10 in this embodiment is simulated according to the above method, as shown in FIG.

[0070] As shown in Figure 13, a completely identical model is drawn based on the structure, and the model is imported into the RF signal simulation software. The parameters are set according to the actual application parameters. The frequency is selected from 0 to 6GHz for simulation, and the voltage standing wave ratio, return loss and insertion loss are statistically obtained. Figure 14 It can be seen that with the increase of frequency, the voltage standing wave ratio gradually increases and reaches 1.0283GHz at the frequency of 6GHz. Figure 14It can be concluded that at a frequency of 6 GHz, the simulation results of the RF connector 10 in this embodiment show a voltage standing wave ratio of 1.0283, which is a significant improvement over the 1.6 defined in the fifth edition of the USCAR17 system performance specification for automotive RF connectors 10. Figure 15 It can be seen that at a frequency of 6 GHz, the simulation results of the RF connector 10 in this embodiment show that the return loss reaches -37.0971, and its absolute value of 37.0971 far exceeds the 12.74 defined in the fifth edition of the USCAR17 system performance specification for automotive RF connectors 10, that is, the reflection loss is greatly improved, so the reflected interference signal is greatly reduced, which significantly improves the transmission performance. Figure 16 It can be seen that at a frequency of 6 GHz, the simulation results of the RF connector 10 in this embodiment show an insertion loss of -0.2462, and the absolute value of 0.2462 is much smaller than 0.45 defined in the fifth edition of the USCAR17 system performance specification for automotive RF connectors 10.

[0071] In summary, it can be concluded that the RF connector 10 provided in the above embodiment, through structural improvement, is provided in the housing 11 with an annular positioning protrusion 113 that matches the outer wall of the outer conductor 123, and a rib 1131 is provided on the mating surface of the annular positioning protrusion 113 and the outer conductor 123. The rib 1131 is used to achieve a fastening connection between the housing 11 and the outer conductor 123, and the convex bulge provided on the outer wall of the outer conductor 123 is eliminated to match the housing 11, thereby improving the consistency of the outer wall profile of the outer conductor 123 and the center conductor 121. At the same time, the tubular clamp 131 is used to indirectly fix the outer conductor 123 and the housing 11. The outer wall of the outer conductor 123 is provided with a physical locking protrusion 1231 which is inserted into the locking groove 1311 of the tubular wire clamp 131, and then a locking buckle 132 is added to indirectly connect the tubular wire clamp 131 and the housing 11. By setting an extended end 1321 of the locking buckle 132 at a suitable position, the extended end 1321 of the locking buckle 132 is matched with the end of the annular positioning protrusion 113 of the housing 11 to clamp the tubular wire clamp 131, thereby greatly increasing the position stability of the tubular wire clamp 131. The cooperation between the physical locking protrusion 1231 and the locking groove 1311 greatly increases the connection stability between the outer conductor 123 and the housing 11. Since the lock buckle 132 and the housing 11 are stably connected via the locking hole 1323 and the locking block 116, a second limiting rod 115 is provided on the housing 11, a limiting groove 1322 is provided on the lock buckle 132 corresponding to the second limiting rod 115, and an arc-shaped matching structure is provided on the end surface of the extended end 1321 of the lock buckle 132 to adapt to the tubular clamp 131. The second limiting groove 1322 and the second limiting rod 115 are adapted to further improve the positioning accuracy of the lock buckle 132, and the second limiting rod 115 can abut against the second limiting groove 1322 at a certain position to control the installation position of the extended end 1321 and the tubular clamp 131. In addition, the center conductor 121 includes a front riveted section 1211 and a rear elastic plug section 1213. The riveted section 1211 is riveted to one of the connected cable conductors, and the riveted length corresponds to the adapted length between the outer conductor 123 and the tubular clamp 131. The elastic plug-in section 1213 is used to mate with the other connected part, wherein the elastic plug-in section 1213 corresponds to the fixed section 1232 of the outer conductor 123, and the contact section 1234 of the outer conductor 123 corresponds to the second clamping section 1314 of the tubular clamp 131, and the outer diameters of each mating section 1233 are different, so that the RF connector 10 has a high degree of structural consistency from the inside to the outside at all stages, and the various components are interlocked, interconnected, and controlled with each other, which greatly improves the structural stability of the RF connector 10. Even when used in an environment with vibration, the various components can have good tightness and fit, thereby improving the transmission reliability of RF signals and improving the signal transmission performance of the RF connector 10.

[0072] The technical features of the above embodiments can be combined arbitrarily.

[0073] All possible combinations of the various technical features are described; however, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but not exhaustive.

[0075] This should be understood as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the utility model, and these modifications fall within the scope of protection of the utility model. Therefore, the scope of protection of the utility model patent shall be based on the appended claims.

Claims

1. A radio frequency connector, characterized in that: include: The housing defines a front-to-back connected installation chamber, wherein the inner wall of the installation chamber protrudes inward to form an annular positioning protrusion, dividing the installation chamber into a front installation chamber and a rear installation chamber; the inner edge of the annular positioning protrusion is provided with a plurality of ribs; A connecting portion is provided in the installation chamber and passes through the front installation chamber and the rear installation chamber, wherein the connecting portion comprises, from the inside to the outside, a cylindrical center conductor, an insulator, and a cylindrical outer conductor; the outer conductor and the annular positioning protrusion form an interference fit through the rib; and a solid latch protrusion is provided on the outer wall of the outer conductor located in the front installation chamber; The fixing part includes a tubular wire clamp and a lock buckle; the tubular wire clamp is provided on the outside of the outer conductor, and a card slot is provided on the side wall of the tubular wire clamp, and the card slot is correspondingly engaged with the physical card protrusion; the lock buckle is fixedly installed on the shell, and the lock buckle includes an extended end, and the extended end passes through the shell and is embedded in the front installation chamber; the rear end of the tubular wire clamp is provided with an outward flange, and the flange is fixedly engaged between the extended end and the annular positioning protrusion.

2. The radio frequency connector according to claim 1, wherein: The convex ribs are evenly distributed on the inner edge of the annular positioning protrusion at intervals along the circumferential direction, and the convex ribs are arc-shaped along the circumferential direction.

3. The radio frequency connector according to claim 1, wherein: The outer conductor includes a fixed section, a mating section and a contact section connected in sequence; the outer diameter of the fixed section is larger than the outer diameter of the mating section, and the outer diameter of the mating section is larger than the outer diameter of the contact section; the fixed section is used to achieve an interference fit with the annular positioning protrusion; the physical clamping protrusion is provided on the mating section, and the tubular wire clamp and the mating section are interference fit; the contact section is inserted into the tubular wire clamp and is used to contact and connect with the outer conductor of the connected cable.

4. The radio frequency connector according to claim 3, wherein: The tubular wire clamp includes a first clamping section and a second clamping section connected in sequence; the flange is provided at the end of the first clamping section, the first clamping section is sleeved outside the mating section and has an interference fit with the mating section; the second clamping section and the contact section clamp the outer conductor of the cable.

5. The radio frequency connector according to claim 4, wherein: The contour of the lower end surface of the extended end is in conformity with the contour of the outer wall of the first clamping section.

6. The radio frequency connector according to any one of claims 3 to 5, characterized in that: The central conductor is provided with a riveting section corresponding to the matching section, which is used for riveting connection with the inner core conductor of the connected cable.

7. The radio frequency connector according to any one of claims 3 to 5, characterized in that: The insulator is provided with a conductor pipe, and the rear end of the central conductor is inserted into the conductor pipe and tightly fits with the conductor pipe; a first limiting rod is protruded from the outer wall of the central conductor corresponding to the end face of the conductor pipe, and the first limiting rod abuts against the end face of the conductor pipe.

8. The radio frequency connector according to claim 7, wherein: The central conductor further includes an elastic plug-in section corresponding to the fixed section, which is used for inserting and clamping the connected conductor.

9. The radio frequency connector according to any one of claims 3 to 5, characterized in that: The shell is provided with a lock mounting chamber corresponding to the matching section, and the lock mounting chamber is provided with a socket connected to the front mounting chamber, and the protruding end extends through the socket to the front side of the flange.

10. The radio frequency connector according to claim 9, wherein: The shell also includes a second limiting rod, which extends from the hole wall into the hole; a limiting groove is provided at the protruding end, and the second limiting rod is embedded in the limiting groove to limit the relative position of the lock buckle and the shell.

Images