Homodromous radio frequency coaxial connector

Abstract

The utility model discloses a same-direction radio frequency coaxial connector, which comprises a first outer conductor and a second outer conductor, and is characterized in that the first outer conductor comprises a first working end and a first connecting end, the first working end is internally provided with a first matching member, and the first matching member comprises a first medium body and a linear first inner conductor located in the first medium body; the second outer conductor comprises a second connecting end and a second working end in the same direction as the first working end, a third dielectric body used for wrapping the radio frequency cable is arranged in the second working end, the second connecting end is connected with the first connecting end to form a first mounting cavity, a second matching assembly is connected in the first mounting cavity, and a second matching assembly is connected in the second mounting cavity. The second matching member comprises a second medium body and a linear second inner conductor located in the second medium body; one end of the second inner conductor is connected with the first inner conductor, and the other end is connected with a core wire of the radio frequency cable. According to the invention, the problem of difficult transmission of small-space radio-frequency signals is solved.

Description

Technical Field

[0001] The present application relates to the technical field of radio frequency connectors, and in particular to a co-directional radio frequency coaxial connector. Background Art

[0002] The head-to-tail unidirectional RF coaxial double-bend quick-plug connector is a unique solution for the interconnection and transmission of RF signals inside equipment modules with extremely small areas or high structural integration and complex structures.

[0003] RF coaxial connectors are a common way of transmitting RF signals and are inevitable in modern human society. In radars, missiles, satellites, and aircraft, which are precise, highly integrated, and have small and compact structural areas, the two conventional structures of straight and curved universal RF connectors have a significant impact on the module space structure in this use environment due to their structural limitations. Conventional RF cable assemblies are composed of straight or curved RF connectors and cables. Due to their inherent characteristics, RF cables cannot be bent with a small radius. If RF cables are bent with a small radius, the cable assembly signal will have a significant impact, resulting in distortion or signal interruption, which will not be transmitted in time, and then cause equipment failures that affect operation, and serious safety hazards and life-threatening situations. When cable assemblies have problems due to the above-mentioned restrictions, the result processing usually requires a lot of manpower, material resources, and financial resources, and even worse, it will cause incalculable losses; signal interruption accidents caused by structural problems are usually serious and cannot be effectively avoided, because their repair projects are huge, the potential dangers are high, and the accidents are serious, which causes inconvenience to the national defense cause and people's daily life.

[0004] In various environments with high precision, high spatial integration, and small and compact structural areas, there is currently no RF coaxial double-bend quick-plug connector that is used in the same direction at the head and tail. Therefore, there are higher restrictions on the structure of the product and it is impossible to simplify the product structure in some areas, resulting in unnecessary waste of space and a large amount of manpower, material and financial resources lost in order to make up for the defects. In order to improve the space utilization and module integration efficiency of precision, high spatial integration, and small and compact structural equipment, and to ensure the reliability and safety of product signal transmission, a RF coaxial connector with the same direction at the head and tail is needed. Summary of the invention

[0005] The purpose of the present application is to provide a co-directional radio frequency coaxial connector to solve the problem in the prior art of difficulty in interconnecting and transmitting radio frequency signals within extremely small areas or equipment modules with highly integrated and complex structures.

[0006] In order to achieve the above objectives, this application is implemented by adopting the following technical solutions:

[0007] The present application discloses a co-directional radio frequency coaxial connector, comprising:

[0008] A first outer conductor comprises a first working end and a first connecting end, wherein a first matching piece is disposed in the first working end, and the first matching piece comprises a first dielectric body and a linear first inner conductor disposed in the first dielectric body;

[0009] A second outer conductor includes a second connecting end and a second working end in the same direction as the first working end, wherein a third dielectric body for wrapping the radio frequency cable is disposed in the second working end, the second connecting end is connected to the first connecting end and forms a first mounting cavity, a second matching component is installed in the first mounting cavity, and the second matching component includes a second dielectric body and a linear second inner conductor located in the second dielectric body;

[0010] One end of the second inner conductor is connected to the first inner conductor, and the other end is used to connect to the core wire of the radio frequency cable.

[0011] Furthermore, the first connecting end and the second connecting end are both provided with mounting grooves, and the second connecting end is press-fitted into the mounting groove of the first connecting end;

[0012] The second dielectric body is press-fitted into the mounting groove of the second connecting end, and the two ends are limited by the end surfaces of the two mounting grooves;

[0013] The second inner conductor is mounted in the second dielectric body.

[0014] Furthermore, the first connecting end and the second connecting end are interference fit.

[0015] Further, the first dielectric body is pressed into the first working end, and the first inner conductor is pressed into the first dielectric body.

[0016] Further, the third dielectric body is press-fitted into the second working end.

[0017] Furthermore, one end of the second inner conductor is welded to the first inner conductor, and the other end is welded to the core wire of the radio frequency cable.

[0018] Furthermore, a second installation cavity communicating with the first installation cavity is provided in the first working end;

[0019] The first outer conductor is provided with an opening at the intersection of the first mounting cavity and the second mounting cavity, the opening is connected with a third fitting, and the third fitting comprises a first cover plate connected with the opening and a first cover plate dielectric body located in the first cover plate.

[0020] Further, the first cover plate is press-fitted on the opening.

[0021] Furthermore, a third installation cavity communicating with the first installation cavity is provided in the second working end;

[0022] The second outer conductor is provided with an opening at the intersection of the first mounting cavity and the third mounting cavity, the opening is connected with a fourth fitting, and the fourth fitting comprises a second cover plate connected with the opening and a second cover plate dielectric body located in the second cover plate.

[0023] Further, the second cover plate is press-fitted on the opening.

[0024] The beneficial effects of this application are:

[0025] In the RF coaxial connector of the present application, the first outer conductor and the second outer conductor are connected through the first connection end and the second connection end to form a first installation cavity, which facilitates the installation of the second mating part. This design facilitates assembly. In the present application, one end of the second inner conductor is connected to the first inner conductor, and the other end is used to connect to the core wire of the RF cable. The direct connection of the inner conductor reduces the number of connection points and reduces the risk of signal attenuation and distortion. It is suitable for RF communications that require high-quality signal transmission.

[0026] The present application designs a first working end and a second working end in the same direction. When in use, the first working end is directly plugged into the device, and the second working end is connected to the RF cable, which conveniently realizes the interconnection of RF signals in a small area or inside a device module with a high degree of integration and a complex structure, thereby solving the problem of difficulty in transmitting RF signals in a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a cross-sectional view of the overall structure of this application;

[0028] Figure 2 This is a schematic diagram of the overall structure of this application;

[0029] Figure 3 This is a schematic diagram of the connector used in this application;

[0030] Figure 4 A schematic diagram of a second mating component of the present application;

[0031] Figure 5 This is a schematic diagram of the structure of the first component of this application;

[0032] Figure 6 This is a schematic diagram of the structure of the first matching component of the present application;

[0033] Figure 7 This is a schematic diagram of the structure of the second component of this application;

[0034] Figure 8 This is a schematic diagram of the structure of the third component of this application;

[0035] Fig. 9 This is a schematic diagram of the structure of the third matching component of this application;

[0036] Fig.10 This is a schematic structural diagram of the fourth matching component of the present application.

[0037] Among them: 1-first outer conductor, 2-first dielectric body, 3-first inner conductor, 4-first cover dielectric body, 5-first cover, 6-second dielectric body, 7-second inner conductor, 8-second outer conductor, 9-second cover, 10-second cover dielectric body, 11-third dielectric body, 12-second matching part, 13-first assembly, 14-first matching part, 15-second assembly, 16-third assembly, 17-third matching part, 18 fourth matching part. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by this application easy to understand, this application is further explained below in conjunction with specific implementation methods.

[0039] It should be noted that in the description of the present application, the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "up", "down", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application rather than requiring that the present application must be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. The terms "front", "rear", "left", "right", "up", and "down" used in the description of the present application refer to the directions in the accompanying drawings, and the terms "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0040] The purpose of this application is to provide a connector to achieve the purpose of space utilization and module integration efficiency of precision devices, high spatial integration, and compact equipment with a small structural area.

[0041] The present application discloses a co-directional radio frequency coaxial connector, comprising a first outer conductor 1 and a second outer conductor 8, wherein the first outer conductor 1 comprises a first working end and a first connecting end, wherein a first fitting part 14 is arranged in the first working end, wherein the first fitting part 14 comprises a first dielectric body 2 and a first linear inner conductor 3 located in the first dielectric body 2; wherein the second outer conductor 8 comprises a second connecting end and a second working end in the same direction as the first working end, wherein a third dielectric body 11 for wrapping a radio frequency cable is arranged in the second working end, wherein the second connecting end is connected to the first connecting end and forms a first mounting cavity, wherein a second fitting part 12 is arranged in the first mounting cavity, wherein the second fitting part 12 comprises a second dielectric body 6 and a second linear inner conductor 7 located in the second dielectric body 6; wherein one end of the second inner conductor 7 is connected to the first inner conductor 3, and the other end is used for connecting to the core wire of the radio frequency cable.

[0042] When the present application is in use, an RF cable is connected to the second working end. When the RF signal is transmitted to the connector through the RF cable, the first thing that comes into contact is the third dielectric body 11 in the second working end. This part is designed to receive and temporarily wrap the RF cable, so as to ensure that the impedance matching and stable and reliable transmission of the RF signal are maintained after the RF signal is conducted from the RF cable into the connector. The core wire of the RF cable is connected to one end of the second inner conductor 7, so that the RF signal transmitted from the cable forms a signal conduction path with the inside of the connector. The other end of the second inner conductor 7 is connected to the first inner conductor 3, realizing the transition of the signal from the second mating part 12 to the first mating part 14. The first inner conductor 3 is located in the first dielectric body 2, and the RF signal passes through the first inner conductor 3 along a straight path and finally reaches the first working end, where the signal can be further transmitted to other RF devices or components to complete the signal transmission task.

[0043] In the RF coaxial connector of the present application, the first outer conductor and the second outer conductor are connected via the first connecting end and the second connecting end to form a first mounting cavity, which facilitates the installation of the second mating component. This design facilitates the assembly of the connector.

[0044] The present application designs a first working end and a second working end in the same direction. When in use, the first working end is directly plugged into the device, and the second working end is connected to the RF cable, which conveniently realizes the interconnection of RF signals in a small area or inside a device module with a high degree of integration and a complex structure, thereby solving the problem of difficulty in transmitting RF signals in a small space.

[0045] The present application is described below through specific embodiments.

[0046] like Figure 1-10 As shown, the connector of the present application includes a first outer conductor 1, which is placed at the head of the connector as a whole, and is used for the connector interface to be docked and used as the connector interface to transmit radio frequency signals. The second outer conductor 8 is placed at the rear of the connector as a whole, and is used for the cable at the rear of the connector to be matched, and used in conjunction with the cable to form a cable assembly.

[0047] like Figure 8 As shown, the third component 16 is composed of the first outer conductor 1 and the second outer conductor 8, and is used as an external conductor to conduct radio frequency signals. Furthermore, the first outer conductor 1 and the second outer conductor 8 are fixed by interference fit and riveting to ensure that the first outer conductor 1 and the second outer conductor 8 are coaxial and not skewed.

[0048] like Figure 1 , Fig. 9 and Fig.10As shown, the first working end is provided with a second mounting cavity connected to the first mounting cavity, and the first outer conductor 1 is provided with an opening at the intersection of the first mounting cavity and the second mounting cavity, and the opening is used to install the third matching part 17. The second working end is provided with a third mounting cavity connected to the first mounting cavity, and the second outer conductor 8 is provided with an opening at the intersection of the first mounting cavity and the third mounting cavity, and the opening is used to install the fourth matching part 18.

[0049] Specifically, the first cover plate 5 and the first cover plate dielectric body 4 are interference-fitted to form a third fitting part 17, and the third fitting part 17 is interference-fitted with the first outer conductor 1; the second cover plate 9 and the second cover plate dielectric body 10 are interference-fitted to form a fourth fitting part 18, and the fourth fitting part 18 is interference-fitted with the second outer conductor 8; it is used to compensate for the performance of the overall component and prevent short circuits in solder joints.

[0050] like Figure 4 As shown, the second dielectric body 6 and the second inner conductor 7 cooperate with each other to form a second fitting part 12, which is used to compensate for the radio frequency signal in the overall component and to fix and support the second inner conductor 7 to keep the component relatively stable.

[0051] like Figure 5 As shown, the right end of the second fitting part 12 is positioned and fixed by the second outer conductor 8 to form a first component 13.

[0052] like Figure 6 As shown, the inner conductor 3 and the dielectric body 2 cooperate to form a first fitting member 14; the first fitting member 14 and the first outer conductor 1 are press-fitted together to form a second assembly 15 and further to form a connector head.

[0053] The first component 13 is press-fitted with the second component 15 and positioned and fixed with respect to the second fitting 12. Furthermore, the second dielectric body 6 in the second fitting 12 is press-fitted into the mounting groove of the second connection end, and both ends of the second dielectric body 6 are limited by the end faces of the two mounting grooves.

[0054] The second dielectric body 6 is locked by the first outer conductor 1 and the second outer conductor 8 through interference fit, ensuring that the second dielectric body 6 is fixed and does not move.

[0055] The third dielectric body 11 is disposed at the tail of the second outer conductor 8 and is used to compensate for the performance of the RF cable and the RF connector during the matching process and to support the core wire.

[0056] In some further embodiments, the first inner conductor is soldered to the second inner conductor, and the size of the soldering spot at the spot welding is required to be within a strict requirement range. Each component must be ensured to have a relatively precise accuracy, and the processing size must be within a strict tolerance range.

[0057] The first inner conductor and the second inner conductor as well as the core wire of the RF cable are fixed by welding and the quality of the welding points must be guaranteed. The tail of the second outer conductor of the RF connector is fixed to the shielding layer of the RF cable by welding. After the first cover plate of the RF connector and the first outer conductor, the second cover plate and the second outer conductor are snap-fitted together, the interface size requirements should be met and the outer surface of the cover plate should not protrude from the outer surface of the outer conductor.

[0058] The left end of the second outer conductor 8 of the RF connector should be straight-grain rolled to ensure the matching dimensions.

[0059] In one embodiment, the first dielectric body 2 is provided with six holes for compensation uniformly with its own center point as the center of the circle, ensuring that the centers of the holes are uniformly located on the same circle. This design can reduce the size of the first dielectric body 2 and ensure the small size requirement of the connector as a whole.

[0060] The method of using the connector in this application is:

[0061] The second dielectric body 6 and the second inner conductor 7 are matched at the center of the diameter change to form a second matching fitting 12, and the second inner conductor 7 is fixed and limited by the second dielectric body 6 in the circumferential and axial directions to ensure that the second inner conductor 7 works stably inside the connector as a whole; the second matching fitting 12 is matched with the second dielectric body 6 and the second outer conductor 8 to limit the right end through the step at the diameter change of the second outer conductor 8; the second dielectric body 6 and the second inner conductor 7 are assembled to form the second matching fitting 12; the second matching fitting 12 is matched and assembled with the second outer conductor 8 to ensure that the first component 13 is formed after the right side of the second matching fitting 12 is limited; the inner diameter of the first dielectric body 2 is expanded by a tool, and the first inner conductor 3 is further pressed into the first dielectric body 2 to form a first matching fitting 14; the first matching fitting 14 is pressed into the matching structure of the first outer conductor 1 by a punch to form a second component 15; the second component 15 is pressed into the first component 13 by an interference fit to further ensure that the press fit is in place and there is no abnormality in the fit; the second component 15 After the first outer conductor 1 is press-fitted, the tail of the first outer conductor 1 is riveted to ensure that the first outer conductor 1 and the second outer conductor 8 are tightly fitted and not loose; after the second component 15 is matched with the first component 13, the inner conductor 3 and the head of the second inner conductor 7 are welded by soldering, and the size of the solder joint is further ensured; the first cover plate 5 is press-fitted with the first cover plate dielectric body 4 to form a third fitting part 17, and the third fitting part 17 and the first outer conductor 1 are press-fitted with interference; the third dielectric body 11 is matched with the core wire of the RF cable to further ensure the core wire state and compensate the performance of the overall component; the right end tail of the second inner conductor 7 is soldered to the core wire of the RF cable to further ensure the size of the solder joint and the welding quality; the second outer conductor 8 is soldered to the shielding layer of the RF cable to further ensure that the cable and the RF connector have a holding force and do not fall out; the second cover plate 9 is press-fitted with the second cover plate dielectric body 10 to form a fourth fitting part 18, and the fourth fitting part 18 is press-fitted with the first component 13. After the RF connector and RF cable are assembled, they can be used together in various complex environments and can transmit the required signals normally.

[0062] This application has the following advantages: (1) It can ensure the reliability, safety and stability of product signal transmission in the limited space of precision, high spatial integration, and small and compact structural areas. (2) It abandons the design ideas of ordinary RF connector structures, optimizes the problems of product performance instability or signal interruption caused by cable bending during signal transmission, and provides the latest ideas for RF circuit transmission process. (3) The overall structure is reasonable, and the double-bend signal transmission method has better safety and adjustability, higher space utilization efficiency and space integration stability, and effectively protects the signal transmission of RF cable components.

[0063] It is known from common technical knowledge that the present application can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present application or within the scope equivalent to the present application are included in the present application.

Claims

1. A co-directional radio frequency coaxial connector, characterized in that: include: A first outer conductor (1) comprising a first working end and a first connecting end, wherein a first matching piece (14) is provided in the first working end, and the first matching piece (14) comprises a first dielectric body (2) and a first linear inner conductor (3) located in the first dielectric body (2); A second outer conductor (8) comprises a second connecting end and a second working end in the same direction as the first working end, wherein a third dielectric body (11) for wrapping the radio frequency cable is disposed in the second working end, the second connecting end is connected to the first connecting end and forms a first mounting cavity, a second matching component (12) is mounted in the first mounting cavity, and the second matching component (12) comprises a second dielectric body (6) and a second linear inner conductor (7) located in the second dielectric body (6); One end of the second inner conductor (7) is connected to the first inner conductor (3), and the other end is used to be connected to the core wire of the radio frequency cable.

2. The codirectional radio frequency coaxial connector according to claim 1, characterized in that: The first connecting end and the second connecting end are both provided with mounting grooves, and the second connecting end is press-fitted into the mounting groove of the first connecting end; The second dielectric body (6) is pressed into the mounting groove of the second connection end, and the two ends are limited by the end surfaces of the two mounting grooves; The second inner conductor (7) is mounted in the second dielectric body (6).

3. The codirectional radio frequency coaxial connector according to claim 1, characterized in that: The first connecting end and the second connecting end are interference fit.

4. The codirectional radio frequency coaxial connector according to claim 1, characterized in that: The first dielectric body (2) is pressed into the first working end, and the first inner conductor (3) is pressed into the first dielectric body (2).

5. The codirectional radio frequency coaxial connector according to claim 1, characterized in that: The third medium body (11) is pressed into the second working end.

6. The codirectional radio frequency coaxial connector according to claim 1, characterized in that: One end of the second inner conductor (7) is welded to the first inner conductor (3), and the other end is welded to the core wire of the radio frequency cable.

7. The codirectional radio frequency coaxial connector according to claim 1, characterized in that: A second installation cavity communicating with the first installation cavity is provided in the first working end; The first outer conductor (1) is provided with an opening at the intersection of the first mounting cavity and the second mounting cavity, the opening being connected to a third fitting member (17), the third fitting member (17) comprising a first cover plate (5) connected to the opening and a first cover plate dielectric body (4) located inside the first cover plate (5).

8. The co-directional radio frequency coaxial connector according to claim 7, characterized in that: The first cover plate (5) is pressed onto the opening.

9. The codirectional radio frequency coaxial connector according to claim 1, characterized in that: A third installation cavity connected to the first installation cavity is provided in the second working end; The second outer conductor (8) is provided with an opening at the intersection of the first mounting cavity and the third mounting cavity, the opening being connected to a fourth fitting member (18), the fourth fitting member (18) comprising a second cover plate (9) connected to the opening and a second cover plate dielectric body (10) located inside the second cover plate (9).

10. The codirectional radio frequency coaxial connector according to claim 9, characterized in that: The second cover plate (9) is pressed onto the opening.

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