High temperature resistant radio frequency coaxial connector

Abstract

The application belongs to the technical field of connectors, and particularly discloses a high-temperature-resistant radio frequency coaxial connector. The high-temperature-resistant radio frequency coaxial connector comprises an inner conductor, an outer conductor and an insulating support. The inner conductor comprises a first inner conductor and a second inner conductor, and the first inner conductor is connected with the second inner conductor. The outer conductor is multiple, multiple outer conductors are sleeved on the inner conductor and are sequentially arranged along the length direction of the inner conductor, the tail part of the outer conductor located at the tail end of the high-temperature-resistant radio frequency coaxial connector is provided with a mounting part, and the mounting part is used for mounting a to-be-tested element. The insulating support is sleeved on the inner conductor and supports an element arranged between the inner conductor and the outer conductor. The application can realize the requirement of long transmission distance of electric signals in a high-temperature environment, and can test small elements individually.

Description

Technical Field

[0001] This invention belongs to the field of connector technology, specifically relating to a high-temperature resistant radio frequency coaxial connector. Background Technology

[0002] Radio frequency (RF) coaxial connectors are generally considered components that are attached to cables or installed on instruments. As electrical connections or disconnections of transmission lines, they belong to the category of mechatronic products. In communication and radar systems, RF coaxial connectors are widely used for connecting module ports and equipment. They serve as bridges for the transmission of electrical signals between various chassis, cabinets, and modules. They come in various forms and have diverse applications; the reliability of the connection directly affects the safe and reliable operation of the entire system.

[0003] Depending on the environmental requirements, RF coaxial connectors can be categorized into high-temperature RF coaxial connectors, non-magnetic RF coaxial connectors, and sealed RF coaxial connectors. High-temperature RF coaxial connectors are used in some special high-temperature applications. For these applications, where the solder pins are exposed to 350°C and pass through a metal insulation layer, a high-temperature RF coaxial connector capable of long-distance transmission is required, and this connector must be compatible with the component under test (DUT). In existing technologies, the high-temperature RF coaxial connector is placed directly on the entire circuit board for testing. However, there is no suitable placement for smaller DUTs, preventing their independent testing. This application provides a high-temperature RF coaxial connector that is ten times longer than conventional high-temperature RF coaxial connectors, enabling longer signal transmission distances in high-temperature environments and allowing for the testing of even small components. Summary of the Invention

[0004] The purpose of this invention is to provide a high-temperature resistant radio frequency coaxial connector that can meet the requirement of long-distance transmission of electrical signals in high-temperature environments, and the high-temperature resistant radio frequency coaxial connector can individually test tiny components.

[0005] To achieve the above objectives, according to one aspect of this application, a high-temperature resistant radio frequency coaxial connector is provided, comprising:

[0006] An inner conductor, the inner conductor comprising a first inner conductor and a second inner conductor, wherein the first inner conductor is connected to the second inner conductor;

[0007] The outer conductor, which is multiple, is sleeved on the inner conductor and arranged sequentially along the length of the inner conductor. The tail of the outer conductor located at the tail end of the high-temperature RF coaxial connector is provided with a mounting part, which is used to mount the component under test.

[0008] An insulating support is sleeved on the inner conductor and supported between the inner conductor and the outer conductor.

[0009] Furthermore, the insulating support is disposed between two adjacent outer conductors to isolate the two outer conductors from the inner conductor.

[0010] Furthermore, at least one of the two adjacent outer conductors has a limiting groove on the inner wall of its end, and the limiting groove surrounds and forms an installation space adapted to the insulating bracket.

[0011] Furthermore, the end of the first inner conductor away from the second inner conductor is provided with two connecting slots, which are used to connect with a pin connector.

[0012] Furthermore, the first inner conductor and / or the second inner conductor are made of tin bronze or beryllium bronze.

[0013] Furthermore, the insulating support is a glass-ceramic support.

[0014] Furthermore, the second inner conductor includes a main body segment, and a first cylindrical segment and a second cylindrical segment are provided at one end of the main body segment near the first inner conductor. The outer diameter of the second cylindrical segment is smaller than the outer diameter of the second inner body segment. The first cylindrical segment is closer to the first inner conductor than the second cylindrical segment, and the outer diameter of the first cylindrical segment is smaller than the outer diameter of the second cylindrical segment. An insulating bracket is sleeved on the second cylindrical segment. The first inner conductor is threadedly connected to the first cylindrical segment and the insulating bracket on the second cylindrical segment is limited between the first inner conductor and the main body segment.

[0015] Furthermore, a nut is provided on the outer conductor that is connected to the tail end of the high-temperature resistant radio frequency coaxial connector, and the nut is used to connect to the housing of the predetermined structure.

[0016] Furthermore, the two outer conductors located at the tail end of the high-temperature resistant radio frequency coaxial connector are connected by a tight-fitting connection.

[0017] Furthermore, the mounting part is a mounting groove.

[0018] Applying the technical solution of this invention, in actual operation, the first inner conductor and the second inner conductor are connected, and during testing, the first inner conductor and the second inner conductor can be made conductive. Next, multiple outer conductors are sleeved on the inner conductor and arranged sequentially along the length of the inner conductor. This application also includes an insulating support, which is sleeved on the inner conductor and supported between the inner conductor and the outer conductor. This insulating support isolates the inner conductor and the outer conductor. The inner conductor in this application includes two segments, and the outer conductor includes multiple segments. Compared to existing high-temperature RF coaxial connectors, the high-temperature RF coaxial connector in this application can be made longer, thus meeting the requirement for longer signal transmission distances in high-temperature environments.

[0019] In addition, a mounting part is provided on the tail of the outer conductor at the end of the high-temperature RF coaxial connector. This mounting part allows for the placement and individual testing of tiny components under test.

[0020] In other words, this application isolates the inner and outer conductors by sleeved multiple outer conductors on the inner conductor and supporting an insulating bracket between them. This allows for longer signal transmission distances even in high-temperature environments. Furthermore, the high-temperature resistant RF coaxial connector of this application, by providing a mounting portion on the tail of the outer conductor at the connector's tail end, enables the individual placement and testing of minute components, resulting in a simple structure and convenient use. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0022] Figure 1 This is a cross-sectional view of the high-temperature resistant radio frequency coaxial connector disclosed in this embodiment;

[0023] Figure 2 yes Figure 1 Enlarged view of area A in the middle;

[0024] Figure 3 This is a cross-sectional view of the tail end of the high-temperature resistant radio frequency coaxial connector disclosed in this embodiment;

[0025] Figure 4 yes Figure 3 Top view.

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

[0027] 10. Inner conductor; 11. First inner conductor; 12. Second inner conductor; 120. Main body section; 121. First cylindrical section; 122. Second cylindrical section; 123. Welding needle; 20. Outer conductor; 21. Limiting groove; 22. Mounting part; 23. Nut; 30. Insulating bracket. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and are not to a precise scale, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0029] It should be noted that, in order to clearly illustrate the content of this invention, several embodiments are provided to further explain different implementations of the invention. These embodiments are enumerated rather than exhaustive. Furthermore, for the sake of brevity, content mentioned in the preceding embodiments is often omitted in the following embodiments. Therefore, content not mentioned in the later embodiments can be referred to in the preceding embodiments.

[0030] See Figures 1 to 4 As shown in the embodiment of this application, a high-temperature resistant radio frequency coaxial connector is provided. The high-temperature resistant radio frequency coaxial connector includes an inner conductor 10, an outer conductor 20, and an insulating support 30. The inner conductor 10 includes a first inner conductor 11 and a second inner conductor 12, which are connected. Multiple outer conductors 20 are sleeved on the inner conductor 10 and arranged sequentially along the length of the inner conductor 10. A mounting portion 22 is provided at the tail end of each outer conductor 20 located at the tail end of the high-temperature resistant radio frequency coaxial connector. This mounting portion 22 is used to mount the component under test. The insulating support 30 is sleeved on the inner conductor 10 and supported between the inner conductor 10 and the outer conductors 20.

[0031] In actual operation, the first inner conductor 11 and the second inner conductor 12 are connected, allowing for conductivity during testing. Next, multiple outer conductors 20 are sleeved on the inner conductor 10 and arranged sequentially along its length. This application also includes an insulating support 30, which is sleeved on the inner conductor 10 and supported between the inner conductor 10 and the outer conductors 20. This insulating support 30 isolates the inner conductor 10 and the outer conductors 20. In this embodiment, the inner conductor 10 comprises two inner conductor segments, and the outer conductor 20 comprises multiple outer conductor segments. Compared to existing high-temperature RF coaxial connectors, the high-temperature RF coaxial connector in this embodiment can be made longer, thus meeting the requirement for longer signal transmission distances in high-temperature environments.

[0032] In addition, a mounting part 22 is provided on the tail of the outer conductor 20 located at the tail end of the high-temperature RF coaxial connector. With the setting of the mounting part 22, tiny components under test can be placed and tested individually.

[0033] In other words, this application isolates the inner conductor 10 and outer conductor 20 by sleeved multiple outer conductors 20 on the inner conductor 10 and supporting an insulating bracket 30 between the inner conductor 10 and the outer conductors 20. This allows for longer signal transmission distances in high-temperature environments. Simultaneously, the high-temperature resistant RF coaxial connector of this application, by providing a mounting part 22 on the tail of the outer conductor 20 at the end of the connector, enables the individual placement and testing of small components, resulting in a simple structure and convenient use.

[0034] Specifically, the first inner conductor 11 and the second inner conductor 12 can be connected by threads, flanges, or bolts. Any structure that can connect the first inner conductor 11 and the second inner conductor 12 is within the scope of protection of this application.

[0035] Furthermore, the first inner conductor 11 and / or the second inner conductor 12 are made of tin bronze or beryllium bronze. Tin bronze and beryllium bronze are bronzes with tin and beryllium as the main alloying elements, respectively, and are mainly used to make elastic elements and wear-resistant parts. In this embodiment, tin bronze and beryllium bronze are mainly used to make elastic elements. Tin bronze and beryllium bronze have high hardness, high elastic limit, and good corrosion resistance. When the first inner conductor 11, or the second inner conductor 12, or both the first inner conductor 11 and the second inner conductor 12 are made of tin bronze or beryllium bronze, the problem of weakened elasticity of the elastic element under ultra-high temperature environments, leading to poor contact, can be solved. In actual operation, poor contact will not affect the test results.

[0036] Furthermore, two connecting slots (not shown in the figure) are provided at the end of the first inner conductor 11 away from the second inner conductor 12. In actual operation, the two connecting slots are used to connect with the pin connector. Setting two connecting slots can also improve the problem of poor contact of the elastic element mentioned above.

[0037] Optionally, the width of the connecting groove is 0.15mm to 0.25mm, for example, 0.15mm, 0.2mm, or 0.25mm. If the width of the connecting groove is less than 0.15mm, it is too small and inconvenient to process; if the width is greater than 0.25mm, the elasticity of the connecting groove will decrease. Therefore, processing the width of the connecting groove to 0.15mm to 0.25mm avoids both the inconvenience of processing due to its small width and the decrease in elasticity due to its large width.

[0038] like Figure 3 and Figure 4 As shown, in order to install and accommodate the component under test, a mounting part 22 is provided in this embodiment. The mounting part 22 is a mounting groove, which can be a rectangular groove or a square groove. Any structure that can install and accommodate the component under test is within the protection scope of this application.

[0039] Specifically, the outer conductors 20 can be three, four, five, six, seven, or eight or more, and the specific configuration is selected according to actual usage requirements. For example... Figure 1 As shown in the figure, this embodiment illustrates the case where there are six outer conductors 20. The outer conductors 20 located in the middle section have the same structure. This modular design allows for interchangeability and improved maintainability.

[0040] Furthermore, an insulating support 30 is provided between two adjacent outer conductors 20, which isolates the two adjacent outer conductors 20 from the inner conductor 10. In addition, by using the adjacent arrangement method, at least one insulating support 30 can be saved, which greatly reduces the cost.

[0041] Furthermore, a limiting groove 21 is provided on the inner wall of at least one end of two adjacent outer conductors 20; the limiting groove 21 encloses and forms an installation space adapted to the insulating support 30. The limiting groove 21 can be provided on the inner wall of one of the two adjacent outer conductors 20, or it can be provided on the inner walls of both adjacent outer conductors 20 simultaneously. In this way, the insulating support 30 can be limited and the adjacent outer conductors 20 can be supported.

[0042] Optionally, during actual processing, the inner diameter of the limiting groove 21 is 4.5 mm and the thickness is 2 mm. Any size that allows the insulating bracket 30 to be placed in the limiting groove 21 and provides support for the external conductor is acceptable; this application does not impose specific limitations.

[0043] Furthermore, the insulating support 30 is a glass-ceramic support. Glass-ceramic, also known as microcrystalline glass, is a composite material combining crystalline phases and glass, produced through high-temperature melting, molding, and heat treatment. It possesses superior properties such as high strength, high-temperature resistance, and chemical corrosion resistance. Using a glass-ceramic support for the insulating support 30 allows it to meet high-temperature requirements above 350℃, satisfying insulation requirements. This extends the service life of the insulating support 30, thereby extending the service life of the high-temperature RF coaxial connector.

[0044] Specifically, the second inner conductor 12 includes a main body segment 120. The main body segment 120 has a first cylindrical segment 121 and a second cylindrical segment 122 at one end near the first inner conductor 11. The outer diameter of the second cylindrical segment 122 is smaller than the outer diameter of the second inner body. The first cylindrical segment 121 is closer to the first inner conductor 11 than the second cylindrical segment 122. The outer diameter of the first cylindrical segment 121 is smaller than the outer diameter of the second cylindrical segment 122. An insulating bracket 30 is sleeved on the second cylindrical segment 122. The first inner conductor 11 is threadedly connected to the first cylindrical segment 121 and the insulating bracket 30 on the second cylindrical segment 122 is limited between the first inner conductor 11 and the main body segment 120.

[0045] In actual processing, a first cylindrical section 121 and a second cylindrical section 122 are provided in the main body section 120, such as... Figure 2 As shown, the outer diameter of the second cylindrical segment 122 is smaller than the outer diameter of the second inner conductor 12, and the outer diameter of the first cylindrical segment 121 is smaller than the outer diameter of the second inner conductor 12. This arrangement makes the connection between the second inner conductor 12 and the first inner conductor 11 more stable and reliable. If the outer diameters of the first cylindrical segment 121 and the second cylindrical segment 122 were set to be the same, the outer diameter of the first inner conductor 11 would be matched with the outer diameter of the main body segment 120 during the machining of the first inner conductor 11 (i.e., machining a threaded hole in the first inner conductor 11). This would result in a thinner inner wall of the first inner conductor 11, leading to poor connection stability between the first inner conductor 11 and the second inner conductor 12, and shortening the service life of the high-temperature RF coaxial connector.

[0046] Furthermore, an insulating bracket 30 is fitted onto the second cylindrical segment 122. The first inner conductor 11 is connected to the first cylindrical segment 121 by a thread, and the insulating bracket 30 on the second cylindrical segment 122 is limited between the first inner conductor 11 and the main body segment 120. In this way, the first inner conductor 11, the second inner conductor 12, and the outer conductor 20 can be isolated, resulting in a simple structure.

[0047] Specifically, a nut 23 is provided on the outer conductor 20, which is connected to the tail end of the high-temperature RF coaxial connector. This nut 23 is used to pass through the housing of the predetermined structure. This arrangement ensures that the effective distance of the nut 23 passing through the housing of the predetermined structure is moderate. If the nut 23 is located on the outer conductor 20 further forward (i.e., closer to the first inner conductor 11), the effective distance of the nut 23 passing through the housing of the predetermined structure will be shorter.

[0048] Optionally, the tail end of the high-temperature RF coaxial connector refers to the tail end in the direction of electrical signal transmission during actual operation. Figure 1In practice, electrical signals are transmitted from left to right. Therefore, the tail end of the high-temperature RF coaxial connector is the end where the electrical signal is transmitted to the right. The housing with the predetermined structure can be a shell for placing the printed circuit board or a metal box shell.

[0049] Furthermore, the outer conductor 20 at the tail end of the high-temperature RF coaxial connector is connected to the outer conductor 20 connected to the tail end outer conductor 20 via a compression fit. This configuration prevents damage to the high-temperature RF coaxial connector due to loosening when the nut 23 passes through the housing containing the printed circuit board, the housing of the metal box, or connects to other external parts. For example, with a threaded connection, loosening could lead to an unreliable connection and damage to the outer conductor 20 connected to the tail end outer conductor 20. This is why the nut 23 cannot be placed on the outer conductor 20 at the tail end of the high-temperature RF coaxial connector. In other words, the compression fit improves the reliability of the connection between the two outer conductors 20 and increases the service life of the high-temperature RF coaxial connector. The structure is simple and easy to use.

[0050] Alternatively, the other outer conductors 20 can be connected by threads or bolts. Any structure that can connect the outer conductors 20 is within the scope of protection of this application.

[0051] For example, if one end of the outer conductor 20 with the same structure as in this application is threaded with a diameter of 7 mm, then the other end will have a threaded hole with the same diameter of 7 mm. When assembling the same outer conductor 20, it can be tightened by screwing on the thread; this can minimize the stress on the insulating bracket 30, and the structure is simple and easy to use.

[0052] Furthermore, in this embodiment, the first inner conductor 11 is a socket component, and the outer conductor 20 connected to the first inner conductor 11 is at least one of SMA, N-type, and BNC-type sockets. During actual assembly, the thread of the first cylindrical section 121 passes through the insulating bracket 30 sleeved on the second cylindrical section 122 and is tightened to the thread of the first inner conductor 11. Afterwards, the outer conductor 20, having undergone the aforementioned tight fitting, is then tightened to the threads of the other outer conductors 20. This process is simple, time-saving, and labor-saving.

[0053] Specifically, see again Figure 3 and Figure 4 A solder pin 123 is provided at the tail end of the second inner conductor 12 (i.e., the end away from the first inner conductor 11 and close to the tail end of the high-temperature RF coaxial connector), which is used to connect to the pin of the component under test.

[0054] Based on the above description, we can conclude that:

[0055] The high-temperature resistant radio frequency coaxial connector of this application consists of a first inner conductor 11, a second inner conductor 12, an outer conductor 20, and an insulating support 30. Both the first inner conductor 11 and the second inner conductor 12 can be made of tin bronze or beryllium bronze, which solves the problem of weakened elasticity of the elastic element under ultra-high temperature environments, leading to poor contact. The first inner conductor 11 and the first cylindrical segment 121 are connected by threads to conduct electricity between the first inner conductor 11 and the second inner conductor 12. The insulating support 30 on the second cylindrical segment 122 is connected and limited between the first inner conductor 11 and the main body segment 120, thus isolating the first inner conductor 11, the second inner conductor 12, and the outer conductor 20.

[0056] Secondly, this application uses multiple outer conductors 20, and a limiting groove 21 is provided on the inner wall of at least one end of two adjacent outer conductors 20. The limiting groove 21 forms an installation space adapted to the insulating support 30, allowing the insulating support 30 to be placed within the limiting groove 21, thus limiting the insulating support 30 and supporting the adjacent outer conductors 20. Multiple outer conductors 20, on which the insulating support 30 is placed, are sleeved onto the inner conductor 10 and arranged sequentially along the length of the inner conductor 10. Compared to existing high-temperature RF coaxial connectors, the high-temperature RF coaxial connector in this embodiment can be made longer, enabling longer signal transmission distances in high-temperature environments.

[0057] In addition, a mounting slot is provided on the tail of the outer conductor 20 located at the tail end of the high-temperature RF coaxial connector. Through this mounting slot, tiny components can be placed and tested individually. The structure is simple and easy to use.

[0058] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0059] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0060] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-temperature resistant radio frequency coaxial connector, characterized in that, include: The inner conductor (10) includes a first inner conductor (11) and a second inner conductor (12), wherein the first inner conductor (11) is connected to the second inner conductor (12); The outer conductor (20) is multiple, and the multiple outer conductors (20) are sleeved on the inner conductor (10) and arranged sequentially along the length direction of the inner conductor (10). The tail of the outer conductor (20) located at the tail end of the high temperature RF coaxial connector is provided with a mounting part (22), which is used to mount the component under test. The outer conductors (20) located in the middle part have the same structure to realize modular product interchangeability. An insulating bracket (30) is sleeved on the inner conductor (10) and supported between the inner conductor (10) and the outer conductor (20).

2. The high-temperature resistant radio frequency coaxial connector according to claim 1, characterized in that, The insulating support (30) is disposed between two adjacent outer conductors (20) to isolate the two outer conductors (20) from the inner conductor (10).

3. The high-temperature resistant radio frequency coaxial connector according to claim 2, characterized in that, In at least one of the two adjacent outer conductors (20), a limiting groove (21) is provided on the inner wall of its end, and the limiting groove (21) surrounds and forms an installation space that is compatible with the insulating bracket (30).

4. The high-temperature resistant radio frequency coaxial connector according to claim 1, characterized in that, The first inner conductor (11) has two connecting slots at one end away from the second inner conductor (12), and the two connecting slots are used to connect with a pin connector.

5. The high-temperature resistant radio frequency coaxial connector according to claim 1, characterized in that, The first inner conductor (11) and / or the second inner conductor (12) are made of tin bronze or beryllium bronze.

6. The high-temperature resistant radio frequency coaxial connector according to claim 1, characterized in that, The insulating support (30) is a glass-ceramic support.

7. The high-temperature resistant radio frequency coaxial connector according to claim 1, characterized in that, The second inner conductor (12) includes a main body segment (120). The main body segment (120) has a first cylindrical segment (121) and a second cylindrical segment (122) at one end near the first inner conductor (11). The outer diameter of the second cylindrical segment (122) is smaller than the outer diameter of the second inner conductor (12). The first cylindrical segment (121) is closer to the first inner conductor (11) than the second cylindrical segment (122). The outer diameter of the first cylindrical segment (121) is smaller than the outer diameter of the second cylindrical segment (122). An insulating bracket (30) is sleeved on the second cylindrical segment (122). The first inner conductor (11) is threadedly connected to the first cylindrical segment (121) and the insulating bracket (30) on the second cylindrical segment (122) is positioned between the first inner conductor (11) and the main body segment (120).

8. The high-temperature resistant radio frequency coaxial connector according to claim 1, characterized in that, A nut (23) is provided on the outer conductor (20) connected to the tail end of the high-temperature resistant radio frequency coaxial connector. The nut (23) is used to connect with the housing of a predetermined structure. The housing of the predetermined structure is a shell for placing printed circuit boards or a shell for a metal box.

9. The high-temperature resistant radio frequency coaxial connector according to claim 8, characterized in that, The two outer conductors (20) located at the tail end of the high-temperature resistant radio frequency coaxial connector are connected by a tight fit.

10. The high-temperature resistant radio frequency coaxial connector according to any one of claims 1 to 9, characterized in that, The mounting part (22) is a mounting groove.

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