Quick-plug type radio frequency test connector

Abstract

The utility model provides a quick-plug type radio frequency test connector, which comprises an outer conductor, a central conductor, a perforated insulator and an elastic joint, the inner part of the outer conductor is hollow, the central conductor is coaxially arranged in the outer conductor, the perforated insulator is arranged between the outer conductor and the central conductor, and the elastic joint is arranged at one side of the inner part of the outer conductor. Through the arrangement of the elastic joint structure, the quick-plug radio frequency test connector can realize plug-and-test with radio frequency test equipment, and overcomes the problem of low test efficiency caused by threaded butt joint in the prior art.

Description

Technical Field

[0001] This application relates to the field of radio frequency connector technology, and specifically to a quick-connect radio frequency test connector. Background Technology

[0002] In the current RF connector industry, most circuit connectors adopt an external threaded locking structure, which is characterized by a tighter locking connection. However, in the testing industry, the threaded connection method greatly reduces production efficiency.

[0003] In most cases of large-scale testing, the external threads of the test connector are made with fewer threads. This is to reduce the time required to tighten the threads and ensure the electrical performance of the connector. However, this method still requires at least two to three threads to ensure the stability of the connection.

[0004] To meet the high performance requirements of RF testing environments such as 40GHz high frequency and overcome the low testing efficiency of existing threaded structures, an RF test connector with quick insertion and removal efficiency needs to be developed. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this application provides a quick-connect RF test connector that changes the existing threaded connection structure to meet the requirements of connection stability and rapid testing efficiency.

[0006] Specifically, this application provides a quick-connect RF test connector, which includes an outer conductor, a center conductor, a perforated insulator, and a flexible connector. The outer conductor is hollow inside, the center conductor is coaxially disposed inside the outer conductor, the perforated insulator is disposed between the outer conductor and the center conductor, and the flexible connector is disposed on one side inside the outer conductor.

[0007] In one alternative implementation, the resilient connector includes a snap-fit ​​portion and a plurality of spring tabs extending outward from the snap-fit ​​portion. The outer surface of the snap-fit ​​portion abuts against the inner wall of the outer conductor, and the outer edge of the spring tabs away from the snap-fit ​​portion has a protruding edge.

[0008] In one alternative implementation, the outer conductor includes an outer conductor and an inner conductor connected together. One end of the outer conductor has a mounting cavity, the inner conductor is disposed in the mounting cavity, and the elastic joint abuts against the cavity wall of the mounting cavity.

[0009] In one alternative implementation, the perforated insulator is provided with several through holes, a first chamber is provided at the other end of the outer conductor, and a second chamber is provided through the inner conductor, with the through holes connecting the first chamber and the second chamber.

[0010] In one alternative implementation, the center conductor is provided with a first fixing groove, and a through-hole is formed at the center of the perforated insulator. The central hole is adapted to the first fixing groove so that the perforated insulator is disposed in the first fixing groove of the center conductor; the two ends of the center conductor are provided as a first contact end and a second contact end.

[0011] In one alternative implementation, the inner conductor includes a first ring portion and a second ring portion extending outward from one end of the first ring portion. The outer diameter of the second ring portion is smaller than the outer diameter of the first ring portion. A second chamber penetrates the first ring portion and the second ring portion. One end of the first ring portion is provided with a second fixing groove for fixing a perforated insulator. The mounting cavity includes a first-stage cavity and a second-stage cavity that are connected to each other. The second-stage cavity is connected to the opening end of the outer conductor, and the first-stage cavity is located inside the cavity away from the opening end of the outer conductor. The inner conductor and the elastic joint are disposed in the first-stage cavity.

[0012] According to the technical solution provided by the aforementioned implementation method, the quick-connect RF test connector of this application has at least the following advantages:

[0013] (1) By setting up the elastic connector structure, it is possible to plug and test with radio frequency test equipment, which overcomes the problem of low test efficiency caused by threaded connection in the prior art.

[0014] (2) By connecting the internal chamber through the through hole of the perforated insulator, the dielectric constant of the medium between the inner and outer conductors can be adjusted so that the impedance meets the electrical performance requirements of specific test frequency bands such as 40GHz high frequency; and the size of the insulator can be reduced so that the structure transition of the outer conductor is more gradual, effectively reducing the signal reflection that affects the test accuracy and helping to improve the electrical performance.

[0015] (3) By adapting the structure of the mounting cavity to the inner guide and the elastic joint, the structure can be made simpler, the assembly accuracy can be improved, and the size of the internal cavity can be adjusted to adjust the electrical performance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A cross-sectional view of a quick-connect RF test connector provided in one embodiment of this application;

[0018] Figure 2 An exploded view of a quick-connect RF test connector provided in one embodiment of this application;

[0019] Figure 3A schematic diagram of the structure of an elastic joint provided in one embodiment of this application;

[0020] Figure 4 A schematic diagram of the structure of a quick-connect RF test connector provided in one embodiment of this application;

[0021] Figure 5 Another structural schematic diagram of the quick-connect RF test connector provided in one embodiment of this application;

[0022] Figure 6 A cross-sectional view of an external guide provided in one embodiment of this application;

[0023] Figure 7 A cross-sectional view of an inner guide provided in one embodiment of this application;

[0024] Figure 8 This is a schematic diagram of the structure of a perforated insulator provided in one embodiment of this application;

[0025] Figure 9 This is a schematic diagram of the operation of a quick-connect RF test connector provided in one embodiment of this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Quick-connect RF test connector; 200. Female connector; 1. Outer conductor; 101. First chamber; 102. Second chamber; 2. Center conductor; 3. Perforated insulator; 4. Flexible connector; 11. Outer guide; 111. Mounting cavity; 1111. First stage cavity; 1112. Second stage cavity; 112. Threaded portion; 12. Inner guide; 121. First ring portion; 122. Second ring portion; 123. Second fixing groove; 21. First fixing groove; 22. First contact end; 23. Second contact end; 31. Through hole; 32. Center hole; 41. Snap-fit ​​portion; 42. Spring; 421. Protruding edge; 43. Gap. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In this document, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0030] Furthermore, in this article, directional terms such as "upper" and "lower" are defined relative to the orientation of the structure as shown in the attached drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the structure.

[0031] Please see Figures 1 to 8 This application provides a quick-connect radio frequency test connector 100, which includes an outer conductor 1, a center conductor 2, a perforated insulator 3 and an elastic connector 4. The outer conductor 1 is hollow inside, the center conductor 2 is coaxially disposed inside the outer conductor 1, the perforated insulator 3 is disposed between the outer conductor 1 and the center conductor 2, and the elastic connector 4 is disposed on one side inside the outer conductor 1.

[0032] Combination Figures 1 to 3 As shown, in one embodiment, the elastic connector 4 includes a snap-fit ​​portion 41 and a plurality of spring pieces 42 extending outward from the snap-fit ​​portion 41. The outer surface of the snap-fit ​​portion 41 abuts against the inner wall of the outer conductor 1, and a protruding edge 421 is provided on the outer edge of the spring piece 42 away from the snap-fit ​​portion 41.

[0033] Specifically, the spring pieces 42 are arranged circumferentially around the central axis of the latching portion 41, with gaps 43 between each spring piece 42 to avoid interference between them during movement. The number of spring pieces 42 can be adjusted according to actual needs. In this embodiment, there are four spring pieces 42, which ensures both structural strength and appropriate elasticity. In other embodiments, there can be three or more spring pieces 42. Fewer spring pieces would make the spring pieces 42 too wide, which would be detrimental to elastic deformation, while too many spring pieces would reduce the structural strength of each individual spring piece 42.

[0034] Combination Figure 1 , Figure 2 and Figure 6 As shown, in this embodiment, the outer conductor 1 includes an outer conductor 11 and an inner conductor 12 connected to each other. One end of the outer conductor 11 has a mounting cavity 111, and the inner conductor 12 is disposed within the mounting cavity 111. The elastic connector 4 abuts against the cavity wall of the mounting cavity 111. Specifically, the cavity wall of the mounting cavity 111 is configured as a smooth surface.

[0035] During testing, the spring 42 provides a gripping holding force, while the threadless, smooth outer conductor 1 enables plug-and-play efficiency.

[0036] Combination Figure 1 , Figure 2 and Figure 8 In this application, the perforated insulator 3 is provided with a plurality of through holes 31, the other end of the outer guide 11 is provided with a first chamber 101, the inner guide 12 is provided with a second chamber 102, and the through holes 31 connect the first chamber 101 and the second chamber 102.

[0037] In conventional RF test connector structures, the insulator is typically a solid structure. If a solid insulator is used, a larger outer diameter is often required to adjust the dielectric constant of the medium (air, insulator) between the conductors, ensuring the impedance between the outer conductor 1 and the center conductor 2 meets the existing 50-ohm test standard requirement. However, this increased insulator size necessitates a step-like protrusion at the insulator mounting point on the outer conductor 1, resulting in an uneven transition in the overall structure, leading to signal reflection and ultimately reducing electrical performance.

[0038] This application employs a perforated insulator 3 and provides several through holes 31 to connect the first chamber 101 and the second chamber 102, thereby effectively adjusting the dielectric constant. Specifically, the number and diameter of the through holes 31 can be adjusted according to impedance requirements.

[0039] In this application, the number of through holes 31 is 2-8. Since the volume of the perforated insulator 3 is relatively small, the overall dielectric constant can be adjusted by changing the number of through holes 31 while keeping the diameter of the through holes 31 fixed during processing.

[0040] In this embodiment, there are four through holes 31, which are evenly distributed on a concentric circle.

[0041] In this application, in order to reduce the influence of signal reflection, the deviation between the inner diameter of the first chamber 101 and the inner diameter of the second chamber 102 is less than 10%.

[0042] Specifically, the deviation value is calculated as follows: calculate the absolute value of the difference between the inner diameters of the first chamber 101 and the second chamber 102, and then divide the absolute value of the inner diameter difference by the larger inner diameter value of the first chamber 101 and the second chamber 102 to obtain the deviation value.

[0043] Setting the deviation value to less than 10% can effectively reduce mutual interference between internal signals and improve test accuracy. The smaller the deviation value, the more significantly signal reflection interference will be reduced. In this embodiment, the inner diameter of the first chamber 101 is equal to the inner diameter of the second chamber 102.

[0044] Combination Figure 1 and Figure 2As shown, in this embodiment, the center conductor 2 is provided with a first fixing groove 21, and the perforated insulator 3 has a through center hole 32 formed at the center. The center hole 32 is adapted to the first fixing groove 21 so that the perforated insulator 3 is disposed in the first fixing groove 21 of the center conductor 2.

[0045] Combination Figure 8 As shown, in order to facilitate the installation of the perforated insulator 3 in the first fixing groove 21 of the center conductor 2, the perforated insulator 3 can be formed by splitting and assembling parts. For example, the perforated insulator 3 can be symmetrically divided into two parts along the center and symmetrically fitted into the first fixing groove 21 to achieve installation and fixation.

[0046] Combination Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, for ease of testing the connection, the two ends of the center conductor 2 are respectively provided with a first contact end 22 and a second contact end 23.

[0047] Combined with the diagram Figure 1 , Figure 2 and Figure 7 As shown, in this embodiment, the inner guide 12 includes a first ring portion 121 and a second ring portion 122 extending outward from one end of the first ring portion 121. The outer diameter of the second ring portion 122 is smaller than the outer diameter of the first ring portion 121. The second chamber 102 passes through the first ring portion 121 and the second ring portion 122.

[0048] To better secure the perforated insulator 3, a second fixing groove 123 for securing the perforated insulator 3 is provided at one end of the first ring portion 121.

[0049] Combination Figure 6 As shown, the mounting cavity 111 includes a first-stage cavity 1111 and a second-stage cavity 1112 that are connected to each other. The second-stage cavity 1112 is connected to the open end of the outer conductor 1, and the first-stage cavity 1111 is located inside the outer conductor 1 away from the open end. The inner guide 12 and the elastic connector 4 are disposed in the first-stage cavity 1111.

[0050] Specifically, the outer periphery of the first ring portion 121 is in contact with the inner wall of the first-stage cavity 1111 of the outer guide member 11, and the elastic joint 4 is sleeved on the outer side of the second ring portion 122.

[0051] During assembly, the perforated insulator 3 can be installed on the center conductor 2 first, and then the perforated insulator 3 can be fitted into the second fixing groove 123 of the inner conductor 12. Then the inner conductor 12 is inserted into the first cavity 1111 of the outer conductor 11, and then the elastic joint 4 is embedded into the second ring portion 122 of the inner conductor 12 and subjected to an interference fit in the second cavity 1112 of the outer conductor 11 to make the overall structure securely installed.

[0052] To facilitate a stable connection between the external guide 11 and the connection port of the testing instrument, combined with Figure 1 , Figure 2 and Figure 6 As shown, in this embodiment, the outer surface of the other end of the outer guide 11 away from the elastic joint 4 is provided with a threaded portion 112 for engaging with the connection port.

[0053] Combination Figure 9 As shown, the working principle of the quick-connect RF test connector 100 of this application is as follows: the threaded part 112 of the outer conductor 1 of the quick-connect RF test connector 100 can be connected to the connection port of the test instrument first, and its elastic connector 4 can be connected to the female connector 200 under test. At this time, the spring 42 naturally springs out after the insertion is completed, providing a gripping and supporting force to make the lock state stable and reliable; after the test is completed, the quick-connect RF test connector 100 can be manually pulled out of the female connector 200 under test.

[0054] By changing the traditional threaded structure to a quick-connect type, the need for screwing operations is eliminated, saving a significant amount of production and testing time. Furthermore, the use of perforated insulator 3, with impedance adjustment, meets the electrical performance requirements of the 40GHz high-frequency testing scenario, achieving fast and stable testing while still meeting the industry's high-frequency testing needs.

[0055] The quick-connect RF test connector provided by the embodiments of this application has been described in detail above. Specific embodiments have been used to explain the principles and implementation methods of this application. The above description is only for the purpose of helping to understand the method and core mechanism of this application. At the same time, for those skilled in the art, there will be changes in specific embodiments and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A quick-connect RF test connector, characterized in that: The quick-connect RF test connector includes an outer conductor, a center conductor, a perforated insulator, and a flexible connector. The outer conductor is hollow inside, the center conductor is coaxially disposed inside the outer conductor, the perforated insulator is disposed between the outer conductor and the center conductor, and the flexible connector is disposed on one side inside the outer conductor. The resilient connector includes a snap-fit ​​portion and a plurality of spring tabs extending outward from the snap-fit ​​portion. The outer surface of the snap-fit ​​portion abuts against the inner wall of the outer conductor, and the outer edge of the spring tab away from the snap-fit ​​portion is provided with a protruding edge. The outer conductor includes an outer conductor and an inner conductor connected to each other. One end of the outer conductor is provided with a mounting cavity. The inner conductor is disposed in the mounting cavity. The elastic joint abuts against the cavity wall of the mounting cavity. The perforated insulator is provided with a plurality of through holes, which are evenly distributed on a concentric circumference; a first chamber is provided at the other end of the outer conductor, and a second chamber is provided through the inner conductor, with the through holes connecting the first chamber and the second chamber.

2. The quick-connect RF test connector according to claim 1, characterized in that: The deviation between the inner diameter of the first chamber and the inner diameter of the second chamber is less than 10%.

3. The quick-connect RF test connector according to claim 2, characterized in that: The inner diameter of the first chamber is equal to the inner diameter of the second chamber.

4. The quick-connect RF test connector according to claim 1, characterized in that: The number of through holes is 2-8.

5. The quick-connect RF test connector according to claim 1, characterized in that: The central conductor is provided with a first fixing groove, and the perforated insulator has a through central hole at its center. The central hole is adapted to the first fixing groove so that the perforated insulator is disposed in the first fixing groove of the central conductor. The two ends of the central conductor are provided as a first contact end and a second contact end.

6. The quick-connect RF test connector according to claim 1, characterized in that: The inner guide includes a first ring portion and a second ring portion extending outward from one end of the first ring portion. The outer diameter of the second ring portion is smaller than the outer diameter of the first ring portion. The second chamber penetrates the first ring portion and the second ring portion. A second fixing groove for fixing the perforated insulator is provided at one end of the first ring portion. The mounting cavity includes a first-stage cavity and a second-stage cavity that are connected to each other. The second-stage cavity is connected to the opening end of the outer conductor, and the first-stage cavity is located inside the outer conductor, away from the opening end of the outer conductor. The inner guide and the elastic joint are disposed in the first-stage cavity.

7. The quick-connect RF test connector according to claim 1, characterized in that: The outer surface of the outer guide member, away from the elastic joint, is provided with a threaded portion.

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