Radio frequency coaxial device and radio frequency coaxial sleeve

Abstract

The utility model discloses a radio frequency coaxial device and a radio frequency coaxial sleeve, the radio frequency coaxial device comprises a universal end structure, a connection thread bushing and a special end structure, the universal end structure is used for adapting to various different types of special end structures, and the connection thread bushing is used for connecting the universal end structure and the special end structures together. The universal end structure can be adapted to various types of special end structures, such as N-type and SMA-type ports, and adapters of different models, such as N-revolution SMA female, N female-to-SMA male and the like, so that the production cost is reduced, and the production efficiency is improved; the connection threaded sleeve enables the universal end structure and the special end structure to be stably connected, stable and reliable signal transmission is ensured, the universality is enhanced through the design of the center hole and the plug, and various radio frequency coaxial devices can stably transmit signals. Therefore, according to the radio frequency coaxial device, the process complexity and the cost are reduced, the universality and the connection reliability are improved, and the defects of the existing radio frequency coaxial device are effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency coaxial technology, in particular to a radio frequency coaxial device and a radio frequency coaxial kit. Background Art

[0002] RF coaxial devices refer to coaxial transmission lines and related connecting devices used in RF (Radio Frequency, RF) systems, such as coaxial cables, coaxial connectors, coaxial adapters, coaxial loads, coaxial attenuators and coaxial couplers, etc. Their main function is to transmit RF signals. Coaxial cables have excellent shielding performance and low loss characteristics, so they are widely used in RF signal transmission. Coaxial devices use the coaxial structure composed of inner conductors and outer conductors to achieve signal transmission and shielding, thereby ensuring the stability and reliability of signal transmission.

[0003] In modern wireless communication systems, RF coaxial devices are widely used in various communication equipment and systems, such as radio broadcasting, mobile communication base stations, radar systems, satellite communications and navigation systems. The efficient transmission capability and anti-interference performance of coaxial devices ensure the stability and low loss of RF signals in long-distance transmission. In addition, the connection and matching characteristics of coaxial devices have an important impact on the overall performance of the system, which can reduce signal reflection and interference and improve the efficiency and quality of signal transmission. Therefore, RF coaxial devices are not only the basic components of modern communication technology, but also the key factors in realizing high-performance communication systems.

[0004] The invention patent application with application publication number CN117748219A discloses a radio frequency coaxial cable card connector and its production process, such as Figure 1 As shown, the connector includes: a front shell component 10 for connecting the front cable, a middle shell component 20 for clamping the two cable segments, a rear shell component 30 for connecting the rear cable segment and a sealing component 40 for waterproofing; when in use, the middle shell component 20 is first clamped with the rear shell component 30, and then the middle shell component 20 is connected to the front shell component 10.

[0005] The invention patent application aims to complete the cable clamping through the above structure, so that the cable clamping can be completed without welding. When disassembling, the connector can be twisted to separate the rear shell assembly from the front shell assembly and the middle shell assembly, and then the connector can be reused. However, as described in paragraph

[0048] of the invention patent application specification: "S3, insert the pin 13 into the middle of the mold, melt the polytetrafluoroethylene particles and inject them into the mold, and the cooled and formed front insulator 12 and the pin 13 become a whole." That is, it is necessary to injection mold the pin and the front insulator together, which is more complicated and costly to process.

[0006] The invention patent application with application publication number CN112600033A discloses a radio frequency coaxial connector, such as Figure 2 As shown, it comprises: a shell 11, an inner conductor 12, an insulating ring 13 and a shielding ring 14. The inner conductor 12, the insulating ring 13 and the shielding ring 14 are fixedly arranged in the shell 11 in sequence from the inside to the outside.

[0007] The invention patent application aims to achieve the purpose of fixing the connector body on the cable for docking without crimping the wires. However, as stated in paragraph

[0018] of its specification: "A radio frequency coaxial connector of the present invention is docked by two connector bodies, docking rings and outer clamping rings with completely identical structures..." That is, it can only be applied to radio frequency coaxial connectors with completely identical structures at both ends.

[0008] This shows that the prior art still needs to be improved and perfected. Utility Model Content

[0009] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a radio frequency coaxial device and a radio frequency coaxial kit, aiming to solve the problems of complex process, high cost and insufficient versatility of existing radio frequency coaxial connectors.

[0010] The technical solution of this utility model is as follows:

[0011] A radio frequency coaxial device comprises a universal end structure, a connecting thread sleeve and a special end structure, wherein the universal end structure is used to adapt to a plurality of different types of special end structures, and the connecting thread sleeve is used to connect the universal end structure and the special end structure together;

[0012] The universal terminal structure includes: a connection component and a signal transmission component;

[0013] The connection assembly comprises: a front end shell and a rear end shell, the front end shell is used to connect to an external radio frequency device, and the rear end shell is used to connect to a threaded sleeve to connect to the dedicated end structure;

[0014] The signal transmission component comprises: a first center needle, the first center needle is used to transmit the signal to the dedicated end structure, and a center hole is formed at one end of the first center needle facing the dedicated end structure;

[0015] The dedicated end structure includes: a plug for inserting into the central hole for signal transmission.

[0016] The effect of the above scheme is that the design of the universal end structure enables the RF coaxial device to adapt to a variety of different types of special end structures. For the more commonly used ports such as N-type ports and SMA-type ports (whether male or female), it can flexibly configure different types of adapters such as N male to SMA female, N female to SMA male, etc. Similarly, the structure is also applicable to other types of RF coaxial devices, such as loads, couplers and attenuators, which not only reduces production costs but also improves production efficiency. In addition, the application of the connecting thread sleeve makes the connection between the universal end structure and the special end structure more stable, ensuring the stability and reliability of signal transmission. At the same time, the front end shell and the rear end shell in the connecting component are respectively connected to the external RF device and the connecting thread sleeve, which realizes convenient installation and disassembly, and further improves the versatility of the device; the design of the center hole and the plug further enhances the versatility of the RF coaxial device, and no matter what type of RF coaxial device, the model can be stably transmitted through the setting of the center hole and the plug. In general, the utility model RF coaxial device reduces the process complexity and cost while improving the versatility and connection reliability, effectively solving the shortcomings of the existing RF coaxial devices of the same type.

[0017] In a further preferred embodiment, the signal transmission component further includes: a first medium, the first center needle is provided with a holding step, the first medium is sleeved on the outer edge of the first center needle at the center hole and holds the front end surface of the holding step.

[0018] The effect of the above scheme is that the first dielectric sleeve is arranged on the outer edge of the first center needle at the center hole, and supports the front end surface of the clamping step, which not only ensures the fixation of the first center needle at the front end to prevent it from shaking or displacement during signal transmission, but also compensates for the dielectric constant at the center hole. By compensating for the dielectric constant at the center hole, the first dielectric can effectively balance and optimize the electrical characteristics in the signal transmission path, thereby reducing signal reflection and loss, and ensuring signal continuity and stability. Therefore, the above setting ensures high quality and low interference of the signal during the entire transmission process through the dual effects of mechanical fixation and electrical compensation, and improves the performance and durability of RF coaxial devices as a whole.

[0019] In a further preferred embodiment, the signal transmission component further includes: a second medium, the second medium is used to support the rear end surface of the first center needle, and a through hole matching the center hole is opened in the middle of the second medium.

[0020] The effect of the above scheme is that the second medium supports the rear end face of the first center needle, ensuring the stability of the center needle at the rear end and preventing it from being displaced or falling off due to external force during signal transmission; at the same time, the design of the through hole and the center hole being compatible makes the signal transmission path smoother, reduces the reflection and interference of the signal when passing through different media, thereby ensuring the continuity and stability of signal transmission, which not only enhances the physical stability of the center needle, but also optimizes the electrical characteristics, reduces transmission loss, and improves the overall performance and durability of the RF coaxial device. Through the above settings, the utility model ensures high quality, low interference and stability of the signal during transmission.

[0021] In a further preferred embodiment, the universal end structure also includes: a fixing assembly, the fixing assembly includes: a main sleeve and a tail sleeve, the front end shell and the rear end shell are arranged on the outer edge of the main sleeve, the tail sleeve is connected to the inner edge of one end of the main sleeve facing the special end structure, and the tail sleeve is used to support the second medium.

[0022] The effect of the above scheme is that the front shell and the rear shell are set on the outer edge of the main bushing, so that the entire connector has better mechanical strength and structural integrity, preventing loosening or displacement during connection and use; the tail sleeve is connected to the end of the main bushing facing the dedicated end structure, which not only provides additional support, but also supports the second medium to keep it in the correct position, thereby ensuring the stability and continuity of the signal transmission path. In addition, the design of the tail sleeve can effectively buffer the impact of external forces on the second medium, reduce signal transmission interruption or interference caused by vibration or external force, and the entire RF coaxial device has been significantly optimized in both mechanical and electrical aspects, enhancing the durability and reliability of the connector.

[0023] In a further preferred embodiment, the fixing assembly further comprises a top holding sleeve, the cross section of the second medium is convex-shaped, the top holding sleeve is arranged between the tail sleeve and the second medium, and a receiving groove is provided at the front end for fitting the outer ring protruding part of the second medium.

[0024] The effect of the above scheme is that the top holding sleeve is arranged between the tail sleeve and the second medium, and the receiving groove opened at the front end is used to fit the outer ring protrusion of the second medium, ensuring that the second medium can be firmly fixed in the appropriate position to prevent it from being displaced or falling off during the signal transmission process, thereby ensuring the stability and continuity of the signal transmission path. In addition, the addition of the top holding sleeve provides additional support for the second medium, so that it can better maintain stability when subjected to external forces, reducing signal transmission interruption or interference caused by vibration or impact; it not only enhances the physical stability of the center needle, but also optimizes the electrical characteristics, reduces transmission losses, and improves the overall performance and durability of RF coaxial devices.

[0025] In a further preferred embodiment, the fixing assembly also includes a connecting sleeve, which is arranged on the inner edge of the main bushing and sleeved on the outer edge of the first medium. The inner wall is provided with a receiving groove adapted to the first medium, and the rear end is fitted with the top holding sleeve.

[0026] The effect of the above scheme is that: the inner wall of the connection sleeve is provided with a receiving groove adapted to the first medium, so that the first medium can be accurately positioned and firmly fixed to prevent displacement or loosening during use; the rear end of the connection sleeve fits with the top holding sleeve to form a complete fixed structure, thereby ensuring that the entire signal transmission component can remain stable under the action of external force, and will not affect the continuity and stability of signal transmission due to vibration or impact. In addition, by adding multiple support and fixing points, the entire fixed component is made more solid, which improves the durability and reliability of the RF coaxial device.

[0027] In a further preferred embodiment, the RF coaxial device is a RF coaxial adapter, and the dedicated end structure includes: a second center needle, a third medium and a first dedicated shell; one end of the second center needle is inserted into the center hole, and the other end is used to connect to an external RF device; the third medium is arranged between the second center needle and the first dedicated shell, and the first dedicated shell is used to be connected to the rear end shell through a connecting threaded sleeve.

[0028] The effect of the above scheme is that the RF coaxial adapter plays an important role in the RF system and is often used for signal connection and conversion between different types of RF devices. There are many types of adapters, such as N to SMA, N to BNC, SMA to BNC, etc. In traditional technology, each type of adapter usually needs to be equipped with dedicated parts. For example, the N to SMA adapter requires dedicated pins, dedicated shells, etc., which not only increases the complexity and cost of production, but also increases the difficulty of inventory management. The utility model scheme significantly simplifies the diversified needs of parts by designing a universal end structure, a connecting thread sleeve and a dedicated end structure. Specifically, the universal end structure can be adapted to a variety of different types of dedicated end structures, and the two are firmly connected together by connecting the thread sleeve, thereby realizing the rapid assembly of different types of adapters. For example, the N end and the SMA end in the N to SMA adapter are respectively used as dedicated end structures, which are connected to the universal end structure through a threaded connection sleeve, so that a universal end structure can be combined with different dedicated end structures to form multiple types of adapters, which not only reduces the types of dedicated parts that need to be produced and managed, reduces production and inventory costs, but also improves production efficiency and the versatility of devices. At the same time, the second center needle, the third medium and the first dedicated shell in the dedicated end structure are connected to the rear end shell of the universal end structure through a threaded connection sleeve, ensuring the continuity and stability of signal transmission, and further enhancing the connection reliability and mechanical strength of the adapter. Through this flexible configuration, the utility model effectively solves the problems of complex process, high cost and lack of versatility in the prior art, and improves the performance and reliability of the RF coaxial adapter in practical applications.

[0029] In a further preferred embodiment, the RF coaxial device is a calibration load, and the dedicated end structure includes: a third center needle, a capacitor and a dedicated shell group, one end of the third center needle is inserted into the center hole, and the other end is connected to the capacitor, and the dedicated shell group includes a second dedicated shell for connecting to the rear end shell through a connecting threaded sleeve.

[0030] The effect of the above scheme is that the calibration load is the same as the RF coaxial adapter, and the types are various. For example, the dedicated end part can be divided into 50 ohm and 75 ohm loads, etc., and the universal end part can also be divided into N type and SMA type. Therefore, the traditional technology also has problems such as production complexity, cost, and inventory management difficulty. The utility model can also realize the rapid assembly of different calibration load types. For example, the load part in the 50 ohm and 75 ohm calibration loads is used as a dedicated end structure, which is connected to the universal end structure (N type, SMA type or any other) through a threaded connection sleeve, so that a universal end structure can be combined with different dedicated end structures to form a variety of types of calibration loads, which not only reduces the types of special parts that need to be produced and managed, reduces production and inventory costs, but also improves production efficiency and the versatility of the device. At the same time, the third center pin, capacitor and dedicated shell group in the dedicated end structure are connected to the rear end shell of the universal end structure through a threaded connection sleeve, which ensures the continuity and stability of signal transmission and further enhances the connection reliability and mechanical strength of the calibration load. Moreover, it should be noted that the calibration load and the RF coaxial adapter, the special connector and coaxial cable described below (and other RF coaxial devices not described one by one) can share the common end (for example, the N-to-SMA adapter and the N-type calibration load can share the N-type common end structure), so the configuration scheme of the utility model is extremely flexible.

[0031] In a further preferred embodiment, the RF coaxial device is a special connector for a RF circuit board, and the special end structure includes: a fourth center pin, a first spring, a fifth center pin, a third special shell, a telescopic sleeve, a second spring and a telescopic joint, one end of the fourth center pin is used to insert into the center hole, and the other end is provided with a telescopic hole, the first spring is arranged in the telescopic hole, one end of the fifth center pin is accommodated in the telescopic hole, and the other end is used to connect to the RF circuit board; the third special shell is used to be connected to the rear end shell through a connecting threaded sleeve, the second spring is arranged in an annular groove between the outer edge of the third special shell and the inner edge of the telescopic sleeve, one end of the telescopic joint is accommodated in the annular groove, and the other end is used to abut the RF circuit board.

[0032] The effect of the above scheme is that: although it is a special connector for the RF circuit board, the structure of the special connector is also diversified according to the different RF circuit boards, and the problems of the traditional technology will not be repeated. The scheme of the utility model can also reduce the types of special parts that need to be produced and managed, reduce production and inventory costs, and improve production efficiency and the versatility of devices. The fourth center pin, the first spring, the fifth center pin, the third special shell, the telescopic sleeve, the second spring and the telescopic joint in the special end structure are connected to the rear end shell of the universal end structure through a threaded connection sleeve, ensuring the continuity and stability of signal transmission, while also ensuring the scalability of the special connector when connected to the RF circuit board, ensuring the connection stability between the special connector and the RF circuit board, and then ensuring the stability of signal transmission between the two.

[0033] In a further preferred embodiment, the RF coaxial device is a RF coaxial cable, and the dedicated end structure includes: a cable body, a fixed sleeve and a fourth dedicated shell, the wire core of the cable body is inserted into the center hole, the fixed sleeve is fixed to the outer edge of the cable body, and the fourth dedicated shell is threadedly connected to the outer edge of the fixed sleeve for connecting with the rear end shell through a connecting threaded sleeve.

[0034] The effect of the above scheme is that there are many kinds of RF coaxial cables, such as RG series coaxial cables, hard-line coaxial cables, semi-rigid coaxial cables, soft-line coaxial cables, ultra-low loss coaxial cables, double-shielded coaxial cables, and stable amplitude and phase coaxial cables, etc., and the types of connectors are also diverse. Therefore, the traditional technology has the same problems as the above-mentioned adapters, loads, special connectors, etc., which will not be repeated. The scheme of the present utility model can also reduce the types of special parts that need to be produced and managed, reduce production and inventory costs, and improve production efficiency and the versatility of devices. The cable body, fixed sleeve and the fourth special shell in the special end structure are connected to the rear end shell of the universal end structure through a threaded connection sleeve, ensuring the continuity and stability of signal transmission. At the same time, the design of the fixed sleeve and the fourth special shell ensures the stable connection of the cable, enhances the mechanical strength and reliability of the RF coaxial cable connection, and thus ensures the stable transmission of RF signals.

[0035] A radio frequency coaxial kit comprising the radio frequency coaxial device as described above, wherein the dedicated end structure in the radio frequency coaxial device comprises at least two of a switching connector, a calibration component, a cable component, a filter component, an attenuator component, a power divider and a power combiner, and the two dedicated end structures can be adapted to the same universal end structure;

[0036] And / or, the universal end structure in the RF coaxial device includes at least two of a BNC connector, an N-type connector, an SMA connector, an SMB connector, a TNC connector, an MCX connector, an MMCX connector, an F-type connector and a QMA connector, and the two universal end structures can be adapted to the same dedicated end structure.

[0037] When the dedicated end structure is configured in multiple ways, users can flexibly purchase and use it according to actual needs. For example, when users need an N female to SMA female adapter and an N-type calibration kit at the same time (the calibration kit includes short circuit, open circuit, load and straight-through), users can purchase an N female connector as a universal end structure, and an SMA female connector, a short circuit component, an open circuit component, a load component and a straight-through component as a complete set of products for the dedicated end structure. When the adapter is needed, the N female connector and the SMA female connector can be connected through a connecting threaded sleeve. When the N female calibration is complex, the N female connector can be removed and connected to the load component, or the SMA female connector, the short circuit component, the open circuit component, the load component and the straight-through component can each be equipped with an N female connector specifically connected thereto; if on this basis, the user needs an SMA male calibration kit, then only one or more SMA male connectors as universal end structures need to be purchased. It can be seen from the above description that the utility model not only reduces the production cost of RF coaxial devices, but also reduces the user's use cost.

[0038] Compared with the prior art, the radio frequency coaxial device provided by the utility model includes: a universal end structure, a connecting thread sleeve and a special end structure, wherein the universal end structure is used to adapt to a variety of different types of special end structures, and the connecting thread sleeve is used to connect the universal end structure and the special end structure together. Since the universal end structure can adapt to a variety of types of special end structures, such as N-type and SMA-type ports, adapters of different types such as N male to SMA female, N female to SMA male, etc., and other radio frequency coaxial devices such as loads, couplers and attenuators, the production cost is reduced and the production efficiency is improved; the connecting thread sleeve makes the connection between the universal end structure and the special end structure stable, ensuring stable and reliable signal transmission; the front end shell and the rear end shell realize convenient installation and disassembly, and improve the versatility of the device; the design of the center hole and the plug enhances the versatility, so that various types of radio frequency coaxial devices can stably transmit signals. Therefore, the radio frequency coaxial device of the utility model reduces the process complexity and cost, improves the versatility and connection reliability, and effectively solves the shortcomings of existing radio frequency coaxial devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of the radio frequency coaxial cable card connector disclosed in CN117748219A.

[0040] Figure 2 It is a structural schematic diagram of the radio frequency coaxial connector disclosed in CN112600033A.

[0041] Figure 3 It is a structural schematic diagram of a universal end structure used in a preferred embodiment of the radio frequency coaxial device of the utility model.

[0042] Figure 4 It is a structural schematic diagram when the radio frequency coaxial device of the utility model is a radio frequency coaxial adapter.

[0043] Figure 5 It is a structural schematic diagram of the radio frequency coaxial device of the utility model when it is a calibration load.

[0044] Figure 6 The utility model is a structural schematic diagram of a radio frequency coaxial device when it is a radio frequency coaxial connector used for a radio frequency circuit board.

[0045] Figure 7 It is a structural schematic diagram when the radio frequency coaxial device of the utility model is a radio frequency coaxial cable. DETAILED DESCRIPTION

[0046] The utility model provides a radio frequency coaxial device and a radio frequency coaxial kit. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples.

[0047] The utility model provides a radio frequency coaxial device, such as Figures 4 to 7 As shown, it includes a universal end structure 100, a connecting thread sleeve 200 and a special end structure (300-700).

[0048] The design of the universal end structure 100 enables it to adapt to various types of special end structures, and the connecting thread sleeve 200 is used to firmly connect the universal end structure 100 and the special end structure together.

[0049] Specifically, the universal terminal structure 100 includes a connection component 110 and a signal transmission component 120. Figure 3 The connecting assembly 110 is composed of a front end shell 111 and a rear end shell 112. Figure 3 As shown, the front end shell 111 is responsible for connecting the external radio frequency device, while the rear end shell 112 is used to connect the threaded sleeve 200 to further connect the dedicated end structure. In the signal transmission component 120, the first center pin 121 plays a key role. One end of the first center pin 121 is provided with a center hole for inserting the plug of the dedicated end structure to realize signal transmission.

[0050] The dedicated end structure includes a plug for inserting into the center hole (not shown) of the universal end structure 100 for signal transmission. The plug is connected to the first center pin 121 to ensure that the signal can be stably transmitted from the universal end structure 100 to the dedicated end structure. Through this design, the RF coaxial device can adapt to different application requirements, simplify the use of multiple components, and improve the overall versatility and efficiency.

[0051] Preferably, the portion of the universal end structure 100 used to connect the external RF device is a RF connector, such as a BNC (Bayonet Neill-Concelman) connector, an N-type connector, an SMA (SubMiniature version A) connector, an SMB (SubMiniature version B) connector, a TNC (Threaded Neill-Concelman) connector, an MCX (Micro Coaxial) connector, an MMCX (Micro-Miniature Coaxial) connector, an F-type connector and a QMA connector; but usually only the N-type and SMA types, which are the most frequently used, are required.

[0052] In order to illustrate the strong versatility of the radio frequency coaxial device provided by the utility model, examples are given as follows (not all available devices can be listed here, only a part can be listed for illustration, therefore, the following content cannot be used to limit the protection scope of the utility model):

[0053] (1) Adapter:

[0054] N-type male to SMA female adapter: N-type male is a universal end structure, SMA female is a dedicated end structure;

[0055] N-type female to SMA male adapter: N-type female is a universal end structure, SMA male is a dedicated end structure;

[0056] BNC to TNC adapter: BNC connector is a universal end structure, TNC is a special end structure;

[0057] TNC to F-type adapter: TNC connector is a universal end structure, and F-type is a special end structure.

[0058] (2) Load:

[0059] N-type load: The N-type connector is a universal end structure, and the load component is a dedicated end structure;

[0060] SMA type load: SMA connector is a universal end structure, and the load component is a dedicated end structure;

[0061] BNC load: BNC connector is a universal end structure, and the load component is a dedicated end structure;

[0062] (3) Coupler:

[0063] N-type coupler: The N-type connector is a universal end structure, and the coupler assembly is a dedicated end structure;

[0064] SMA type coupler: SMA connector is a universal end structure, and the coupler assembly is a special end structure;

[0065] (4) Attenuator:

[0066] N-type attenuator: The N-type connector is a universal end structure, and the attenuator component is a dedicated end structure;

[0067] SMA type attenuator: The SMA connector is a universal end structure, and the attenuator component is a dedicated end structure.

[0068] (5) Connector:

[0069] N-type connector: The N-type connector is a universal end structure, and the connector assembly is a dedicated end structure;

[0070] SMA type connector: SMA connector is a universal end structure, and the connector assembly is a dedicated end structure;

[0071] BNC connector: The BNC connector is a universal end structure, and the connector assembly is a dedicated end structure;

[0072] TNC connector: The TNC connector is a universal end structure, and the connector assembly is a dedicated end structure.

[0073] (6) Coaxial Switch:

[0074] N-type coaxial switch: The N-type connector is a universal end structure, and the switch assembly is a dedicated end structure.

[0075] SMA coaxial switch: The SMA connector is a universal end structure, and the switch assembly is a dedicated end structure.

[0076] As can be seen from the above examples, through the design of combining the universal end structure with the dedicated end structure, the RF coaxial device of the utility model can adapt to a variety of port types and functional components while achieving flexible configuration and rapid replacement, greatly improving its wide application and convenience.

[0077] In a further preferred embodiment of the present invention, the signal transmission component 120 further includes: a first medium 122, such as Figure 3As shown, the first center needle 121 is provided with a holding step, and the first medium 122 is sleeved on the outer edge of the first center needle 121 at the center hole and holds the front end surface of the holding step.

[0078] In specific implementation, the first medium 122 can be made of polytetrafluoroethylene or ceramic material. The former has excellent insulation performance and high temperature resistance, while the latter has high dielectric constant and low loss factor, which is suitable for high-power and high-frequency radio frequency signal transmission. In addition to the following optimal embodiment, the shape of the first medium can also be designed as a ring structure, the inner diameter matches the outer diameter of the first center needle, and the outer diameter matches the inner diameter of the center hole, ensuring a stable sleeve effect; and the length of the first medium corresponds to the length of the first center needle, ensuring full coverage and providing all-round electrical insulation and mechanical protection; the front end surface of the first medium is provided with a protruding structure, which can better support the clamping step, prevent relative sliding, and ensure the continuity of signal transmission; its surface can also be coated with a conductive layer to enhance the shielding effect and reduce electromagnetic interference; nanoparticles can also be added to the material to further enhance the dielectric constant and mechanical strength, ensuring excellent performance under high frequency and high power conditions. It can be understood that the following optimal embodiment and the alternative embodiment are only for explaining the utility model, and are not used to limit the scope of protection of the utility model.

[0079] Furthermore, the signal transmission component 120 further includes: a second medium 123, such as Figure 3 As shown, the second medium 123 is used to support the rear end surface of the first center needle 121, and a through hole matching the center hole is opened in the middle.

[0080] This solution can be replaced by other embodiments, such as (the present invention can only list some): (1) In some application scenarios, the second medium can be omitted, so that the first center needle directly passes through the center hole of the signal transmission component, reducing the number of components, simplifying the structure, and reducing manufacturing costs. This method is suitable for occasions with low requirements for mechanical fixation and electrical insulation; (2) The second medium can be set in the middle of the first center needle instead of supporting the rear end face. This design can provide better mechanical stability in some applications, while allowing the front and rear ends of the first center needle to be connected to different signal transmission paths respectively; (3) In some special applications, the second medium can be designed to be installed in an adjustable position, that is, the position of the second medium can be adjusted as needed through threads or other fixing methods, so as to adapt to first center needles of different lengths or different signal transmission requirements; (4) The second medium is surrounded around the periphery of the first center needle instead of only supporting the rear end face to provide more comprehensive electrical insulation and mechanical protection, which is suitable for high-frequency and high-power RF signal transmission.

[0081] Preferably, the universal end structure 100 further includes: a fixing assembly 130, such as Figure 3 As shown, the fixing assembly 130 includes: a main bushing 131 and a tail bushing 132 , the front shell 111 and the rear shell 112 are sleeved on the outer edge of the main bushing 131 , the tail bushing 132 is connected to the inner edge of one end of the main bushing 131 facing the dedicated end structure, and the tail bushing 132 is used to support the second medium 123 .

[0082] In addition to the above-mentioned embodiments of the fixing assembly, the present invention may also use other alternative embodiments (used to prove the extensiveness of the protection scope of the present invention, rather than to limit the protection scope of the present application):

[0083] (1) In some applications, the universal end structure can omit the fixing component and directly fix the front shell and the rear shell together by other means, such as welding or gluing. This method simplifies the structural design and manufacturing process and is suitable for occasions with low requirements for mechanical fixation; (2) The fixing component includes a clamping ring and a locking nut. The front shell and the rear shell are sleeved on the clamping ring and then fixed by the locking nut. This design can provide a more secure mechanical connection and is suitable for high vibration or high stress environments; (3) The fixing component includes a sliding bushing and a snap. The front shell and the rear shell are sleeved on the sliding bushing and fixed by the snap. This design allows a certain amount of sliding between the front shell and the rear shell and is suitable for applications that require flexible length adjustment; (4) The fixing component includes a spring and a pressure cover. The front shell and the rear shell sleeve It is arranged on the spring and then fixed by a pressure cover. This design can provide a certain elastic buffer and is suitable for applications that need to absorb mechanical shock or vibration; (5) The fixing component includes an adhesive and a sealing ring. The front end shell and the rear end shell are fixed together by an adhesive, and a sealing ring is used to seal at the connection. This design is suitable for applications that require high sealing; (6) The fixing component includes a bayonet connection and an elastic gasket. The front end shell and the rear end shell are connected together by a bayonet, and an elastic gasket is used to fix and seal at the connection. This design can provide convenient disassembly and assembly and good sealing; (7) The fixing component includes a threaded connection and an anti-loosening gasket. The front end shell and the rear end shell are connected together by threads, and an anti-loosening gasket is used to fix at the threads. This design is suitable for applications that require reliable fixation and anti-loosening.

[0084] Preferably, the fixing assembly 130 further includes a top holding sleeve 133 , the cross section of the second medium 123 is convex-shaped, the top holding sleeve 133 is arranged between the tail sleeve 132 and the second medium 123 , and a receiving groove for fitting the outer ring protruding part of the second medium 123 is opened at the front end.

[0085] In addition to the above-mentioned embodiments of the top holding sleeve, the present invention may also use other alternative embodiments (used to prove the extensiveness of the protection scope of the present invention, rather than to limit the protection scope of the present application):

[0086] (1) In some applications, the top sleeve can be omitted and the tail sleeve can be directly in contact with the second medium. This design simplifies the number of components and is suitable for occasions with low fixation requirements; (2) The top sleeve is replaced by a spring gasket, and the cross-section of the second medium can remain in a convex shape. The spring gasket is arranged between the tail sleeve and the second medium to provide elastic support and ensure close contact; (3) The top sleeve is replaced by a compression ring, which is arranged between the tail sleeve and the second medium. A groove matching the protruding portion of the outer ring of the second medium is opened at the front end, and fixation and sealing are achieved through compression force; (4) The top sleeve is replaced by multiple positioning pins, which are fixed on the inner edge of the tail sleeve and fixed by inserting into the groove of the second medium to ensure its stable position; (5) The top sleeve is replaced by an adjustable gasket, which is arranged between the tail sleeve and the second medium. A groove matching the protruding portion of the outer ring of the second medium is opened at the front end. The top holding sleeve is replaced by a clamping ring, which is arranged between the tail sleeve and the second medium, and is fixed by clamping force. A groove matching the protruding portion of the outer ring of the second medium is provided at the front end. (7) The top holding sleeve is replaced by a double-layer gasket, which is arranged between the tail sleeve and the second medium, and a groove matching the protruding portion of the outer ring of the second medium is provided at the front end. The double-layer structure provides additional cushioning and fixation. (8) The top holding sleeve is replaced by a flexible pad, which is arranged between the tail sleeve and the second medium, and a groove matching the protruding portion of the outer ring of the second medium is provided at the front end. Fixation is achieved through the elasticity of the flexible material. (9) The top holding sleeve is replaced by a magnetic ring, which is arranged between the tail sleeve and the second medium, and is fixed by magnetic adsorption. A groove matching the protruding portion of the outer ring of the second medium is provided at the front end.

[0087] Specifically, the fixing assembly 130 also includes a connection sleeve 134, such as Figure 3 As shown, the connecting sleeve 134 is arranged on the inner edge of the main bushing 131 and sleeved on the outer edge of the first medium 122 . The inner wall is provided with a receiving groove adapted to the first medium 122 , and the rear end is fitted with the top holding sleeve 133 .

[0088] In addition to the above-mentioned embodiments of the adapter sleeve, the present invention may also use other alternative embodiments (used to prove the extensiveness of the protection scope of the present invention, rather than to limit the protection scope of the present application):

[0089] (1) In some applications, the adapter sleeve can be omitted and the main sleeve can be directly in contact with the first medium. This design simplifies the number of components and is suitable for occasions with lower fixation requirements; (2) The adapter sleeve is replaced by a fastening ring, which is set on the inner edge of the main sleeve and sleeved on the outer edge of the first medium. Fixation is achieved by tightening the fastening ring; (3) The adapter sleeve is replaced by an elastic gasket, which is set on the inner edge of the main sleeve and sleeved on the outer edge of the first medium. Fixation is achieved by elastic compression; (4) The adapter sleeve is replaced by a compression gasket, which is set on the inner edge of the main sleeve and sleeved on the outer edge of the first medium. Fixation is achieved by compression force; (5) The adapter sleeve is replaced by an adjustment ring, which is set on the inner edge of the main sleeve and sleeved on the outer edge of the first medium. Fixation is achieved by radial adjustment of the adjustment ring. ; (6) The connecting sleeve is replaced by a locking nut, which is arranged on the inner edge of the main sleeve and sleeved on the outer edge of the first medium, and is fixed by the threaded locking of the locking nut; (7) The connecting sleeve is replaced by a clamping ring, which is arranged on the inner edge of the main sleeve and sleeved on the outer edge of the first medium, and is fixed by the radial clamping of the clamping ring; (8) The connecting sleeve is replaced by a sealing gasket, which is arranged on the inner edge of the main sleeve and sleeved on the outer edge of the first medium, and is fixed and sealed by the compression of the sealing gasket; (9) The connecting sleeve is replaced by a sliding sleeve, which is arranged on the inner edge of the main sleeve and sleeved on the outer edge of the first medium, and is fixed by sliding fit; (10) The connecting sleeve is replaced by a plurality of locating pins, which are arranged on the inner edge of the main sleeve and inserted into the groove of the first medium to achieve fixation.

[0090] According to another aspect of the present invention, Figure 4 As shown, the RF coaxial device is a RF coaxial adapter, and the dedicated end structure 300 includes: a second center needle 310, a third medium 320 and a first dedicated shell 330; one end of the second center needle 310 is inserted into the center hole, and the other end is used to connect to an external RF device; the third medium 320 is arranged between the second center needle 310 and the first dedicated shell 330, and the first dedicated shell 330 is used to connect to the rear end shell 112 through the connecting threaded sleeve 200. The part of the second center needle 310 inserted into the center hole is the plug in the dedicated end structure 300 for inserting into the center hole for signal transmission. Although Figure 4 The structure shown is an N-type male to MCX coaxial adapter, but it can be understood that the illustrated structure is not the only implementation method of the present invention. It is only for explanation and cannot be used to limit the scope of protection of the present invention.

[0091] In specific implementation, it is preferred that the diameter of the circular hole in the middle of the second medium 123 is slightly smaller than the diameter of the center hole, that is, a step is formed at the circular hole in the middle of the second medium 123 to hold the second center needle 310; and the second center needle 310 is used for inserting into the center hole, and one end is in the shape of a petal, that is, it is provided with multiple openings, which can shrink toward the center to pass through the second medium 123 and enter the center hole, and expand after entering the center hole to resist the step, thereby further improving the connection stability and signal transmission stability of the first center needle 121 and the second center needle 310 (other embodiments and non-adapter embodiments can also be provided with this structure, to avoid repetition, it will not be repeated below). The specific size of the connecting threaded sleeve 200 is determined according to the size of the universal end structure 100 and the special end structure.

[0092] According to another aspect of the present invention, Figure 5 As shown, the RF coaxial device is a calibration load, and the dedicated end structure 400 includes: a third center needle 410, a capacitor 420 and a dedicated shell group 430. One end of the third center needle 410 is inserted into the center hole, and the other end is connected to the capacitor 420. The dedicated shell group 430 includes a second dedicated shell for connecting with the rear end shell 112 through a connecting threaded sleeve 200. The part of the third center needle 410 inserted into the center hole is the plug in the dedicated end structure 400 for inserting into the center hole for signal transmission. Since the dedicated shell group 430 is not the main invention of the utility model, and there are many existing mature technologies, the utility model will not elaborate on it.

[0093] In this embodiment, the end of the third center needle 410 facing the center hole can also be set to be petal-shaped to match the step formed by the center hole and the second medium 123 for positioning, which will not be described in detail. Figure 5 The connecting thread sleeve 200 used in the structure shown is connected to the rear end shell 112 of the universal end structure 100 on the inside and to the outer shell of the special shell group 430 on the outside. However, the structure shown in the figure is only one of the preferred embodiments. Other structures of the connecting thread sleeve 200 can also be used as long as they can realize the connection between the universal end structure 100 and the special end structure. Even connection methods such as snap-on connection can also be used as equivalent alternatives of the present invention. However, in comparison, the threaded connection structure has higher stability and stronger versatility. Similarly, Figure 5 Although the structure shown only illustrates the load of the N-type male connector, this does not affect other connectors connecting load components or even short-circuit components, open-circuit components and through components.

[0094] According to another aspect of the present invention, Figure 6As shown, the RF coaxial device is a special connector for RF circuit boards. The special end structure 500 includes: a fourth center pin 510, a first spring 520, a fifth center pin 530, a third special shell 540, a telescopic sleeve 550, a second spring 560 and a telescopic joint 570. One end of the fourth center pin 510 is used to be inserted into the center hole, and the other end is provided with a telescopic hole. The first spring 520 is arranged in the telescopic hole. One end of the fifth center pin 530 is received in the telescopic hole, and the other end is used to connect the RF circuit board. The third special shell 540 is used to be connected to the rear end shell 112 by connecting the threaded sleeve 200. The second spring 560 is arranged in the annular groove between the outer edge of the third special shell 540 and the inner edge of the telescopic sleeve 550. One end of the telescopic joint 570 is received in the annular groove, and the other end is used to abut the RF circuit board. The part of the fourth center pin 510 inserted into the center hole is the plug in the special end structure 500 for inserting into the center hole for signal transmission.

[0095] This embodiment can also be the same as the above two embodiments, the end of the fourth center needle 510 facing the center hole is set to be petal-shaped to match the step formed by the center hole and the second medium 123 for positioning, which will not be repeated. Figure 6 Although the structure shown only illustrates the N-type male connector for connecting to the RF circuit board, this does not affect the use of other types of connectors as the universal terminal structure 100; the dedicated terminal structure is not limited to Figure 6 The structures shown are not the main invention points of the present utility model and will not be listed one by one.

[0096] According to another aspect of the present invention, Figure 7 As shown, the RF coaxial device is a RF coaxial cable, and the dedicated end structure 600 includes: a cable body, a fixed sleeve and a fourth dedicated shell. The wire core of the cable body is inserted into the center hole, the fixed sleeve is fixed to the outer edge of the cable body, and the fourth dedicated shell is threadedly connected to the outer edge of the fixed sleeve, and is used to connect with the rear end shell 112 through the connecting threaded sleeve 200. It should be noted that the RF coaxial cable is different from the other embodiments mentioned above. It has two connectors, that is, the RF coaxial cable is equipped with two universal end structures 100. These two universal end structures 100 can be of the same type, such as both ends are SMA type connectors or both ends are N type connectors, or they can be of different types, such as one end is an SMA type connector and the other end is an N type connector. In addition, the utility model preferably inserts the wire core of the cable body directly into the center hole, but it is also possible to add a plug at the end of the wire core.

[0097] This embodiment can also be the same as the above two embodiments, the end of the fourth center needle 510 facing the center hole is set to be petal-shaped to match the step formed by the center hole and the second medium 123 for positioning, which will not be repeated. Figure 6 Although the structure shown only illustrates the N-type male connector for connecting to the RF circuit board, this does not affect the use of other types of connectors as the universal terminal structure 100; the dedicated terminal structure is not limited to Figure 6 The structures shown are not the main invention points of the present utility model and will not be listed one by one.

[0098] By comparison Figures 4 to 7 It is not difficult to find that Figures 4 to 7 Although the RF coaxial devices shown in the figure are not of the same type, the universal end structure 100 used is the same; this extremely appropriately demonstrates the most important technical effect of the present invention: that is, the same universal end structure 100 can be flexibly matched with different types of dedicated end structures (300, 400, 500, 600 and other structures not shown in the figure) to form different types of RF coaxial devices, which is very different from the prior art and is an extremely practical function that the prior art does not have.

[0099] The utility model also provides a radio frequency coaxial kit including the radio frequency coaxial device as described above, wherein the dedicated end structure in the radio frequency coaxial device includes at least two of a switching connector, a calibration component, a cable component, a filter component, an attenuator component, a power divider and a power combiner, and the two dedicated end structures can be adapted to the same universal end structure;

[0100] And / or, the universal end structure in the RF coaxial device includes at least two of a BNC connector, an N-type connector, an SMA connector, an SMB connector, a TNC connector, an MCX connector, an MMCX connector, an F-type connector and a QMA connector, and the two universal end structures can be adapted to the same dedicated end structure.

[0101] The RF coaxial kit includes all the technical features of the RF coaxial device, and therefore, its protection scope covers all technical solutions of the RF coaxial device. That is, all the claims and specific embodiments of the RF coaxial device can be used in the RF coaxial kit, which will not be described in detail.

[0102] In addition, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and to form different embodiments; for example, any one of the claimed embodiments may be used in any combination.

[0103] It should be noted that the above embodiments illustrate the utility model rather than limit the utility model, and those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation on the claims. The word "comprising" does not exclude the existence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the existence of multiple such elements. The utility model can be implemented by means of hardware including several different elements and by means of appropriately programmed computers. In a unit claim that lists several devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words can be interpreted as names. The steps in the above embodiments should not be understood as limitations on the order of execution unless otherwise specified.

Claims

1. A radio frequency coaxial device, characterized in that: It includes a universal end structure, a connecting thread sleeve and a special end structure, wherein the universal end structure is used to adapt to a variety of different types of special end structures, and the connecting thread sleeve is used to connect the universal end structure and the special end structure together; The universal terminal structure includes: a connection component and a signal transmission component; The connection assembly comprises: a front end shell and a rear end shell, the front end shell is used to connect to an external radio frequency device, and the rear end shell is used to connect to a threaded sleeve to connect to the dedicated end structure; The signal transmission component comprises: a first center needle, the first center needle is used to transmit the signal to the dedicated end structure, and a center hole is formed at one end of the first center needle facing the dedicated end structure; The dedicated end structure includes: a plug for inserting into the central hole for signal transmission.

2. The radio frequency coaxial device according to claim 1, characterized in that: The signal transmission component further includes: a first medium, the first center needle is provided with a holding step, the first medium is sleeved on the outer edge of the first center needle at the center hole and holds the front end surface of the holding step.

3. The radio frequency coaxial device according to claim 2, characterized in that: The signal transmission component further includes: a second medium, which is used to support the rear end surface of the first center needle and has a through hole in the middle thereof adapted to the center hole.

4. The radio frequency coaxial device according to claim 3, characterized in that: The universal end structure also includes: a fixing assembly, which includes: a main bushing and a tail bushing, the front end shell and the rear end shell are sleeved on the outer edge of the main bushing, the tail bushing is connected to the inner edge of one end of the main bushing facing the special end structure, and the tail bushing is used to support the second medium.

5. The radio frequency coaxial device according to claim 4, characterized in that: The fixing assembly also includes a top holding sleeve, the cross section of the second medium is convex-shaped, the top holding sleeve is arranged between the tail sleeve and the second medium, and a receiving groove for fitting the outer ring protruding part of the second medium is opened at the front end.

6. The radio frequency coaxial device according to claim 5, characterized in that: The fixing assembly also includes a connecting sleeve, which is arranged on the inner edge of the main bushing and sleeved on the outer edge of the first medium. The inner wall is provided with a receiving groove adapted to the first medium, and the rear end is in contact with the top holding sleeve.

7. The radio frequency coaxial device according to any one of claims 1 to 6, characterized in that: The RF coaxial device is a RF coaxial adapter, and the dedicated end structure includes: a second center needle, a third medium and a first dedicated shell; one end of the second center needle is inserted into the center hole, and the other end is used to connect to an external RF device; the third medium is arranged between the second center needle and the first dedicated shell, and the first dedicated shell is used to be connected to the rear end shell through a connecting threaded sleeve.

8. The radio frequency coaxial device according to any one of claims 1 to 6, characterized in that: The RF coaxial device is a calibration load, and the dedicated end structure includes: a third center needle, a capacitor and a dedicated shell group. One end of the third center needle is inserted into the center hole, and the other end is connected to the capacitor. The dedicated shell group includes a second dedicated shell for connecting to the rear end shell through a connecting threaded sleeve.

9. The radio frequency coaxial device according to any one of claims 1 to 6, characterized in that: The RF coaxial device is a RF coaxial cable, and the dedicated end structure includes: a cable body, a fixed sleeve and a fourth dedicated shell. The wire core of the cable body is inserted into the center hole, the fixed sleeve is fixed to the outer edge of the cable body, and the fourth dedicated shell is threadedly connected to the outer edge of the fixed sleeve for connecting with the rear end shell through a connecting threaded sleeve.

10. A radio frequency coaxial kit comprising the radio frequency coaxial device according to any one of claims 1 to 6, characterized in that: The dedicated end structure in the radio frequency coaxial device includes at least two of a switching connector, a calibration component, a cable component, a filter component, an attenuator component, a power divider and a power combiner, and the two dedicated end structures can be adapted to the same universal end structure; And / or, the universal end structure in the RF coaxial device includes at least two of a BNC connector, an N-type connector, an SMA connector, an SMB connector, a TNC connector, an MCX connector, an MMCX connector, an F-type connector and a QMA connector, and the two universal end structures can be adapted to the same dedicated end structure.

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