CN115966934A

CN115966934A - Novel anti-rotation radio frequency coaxial adapter

Info

Publication number: CN115966934A
Application number: CN202211361796.4A
Authority: CN
Inventors: 徐晓龙; 魏迪飞; 刘旭
Original assignee: AVIC Shenyang Xinghua Aero Electrical Appliance Co Ltd
Current assignee: AVIC Shenyang Xinghua Aero Electrical Appliance Co Ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-04-14

Abstract

The novel anti-rotation radio frequency coaxial adapter can quickly realize the conversion between the CP-50-169FB coaxial connector and the TNC coaxial connector, solves the butt joint problem of the connectors between different interfaces, and reduces the insertion loss and other problems between links. The radio frequency coaxial adapter mainly comprises a shell assembly, a front insulator, a rear insulator, an outer shell and a switching contact pin. Wherein: the switching contact pin is limited in the shell assembly through the front insulator and the rear insulator, and the shell assembly and the outer shell are fixed in a non-rotating mode through interference fit between metals, so that the whole switching contact pin is limited in the adapter, the insertion loss and the voltage standing-wave ratio of radio-frequency signals are guaranteed, and complete transmission of the signals is finally achieved.

Description

Novel anti-rotation radio frequency coaxial adapter

Technical Field

The invention belongs to the technical field of self-locking connectors, and particularly relates to a novel anti-rotation radio frequency coaxial adapter.

Background

Along with the more and more strict requirements of airborne products on vibration environment and the more and more high requirements on convenience of product maintenance, the anti-loose radio frequency coaxial switching connector is urgently needed. How the standard TNC product is connected with the CP-50-169FB product becomes a difficult problem. Different connector interfaces of different devices are different in types, but in practical application, interconnection and butt joint are often needed, and a transfer cable is generated as required in order to realize interconnection, but the problems of long distance, large insertion loss, high voltage standing wave ratio and the like of the transfer cable are difficult to solve.

Disclosure of Invention

In view of this, the present invention provides a novel anti-rotation rf coaxial adapter, which solves the technical problem of low efficiency of butt joint installation between connectors.

The utility model provides a novel prevent rotatory radio frequency coaxial adapter, includes outer casing, inner casing and adapter pin, outer casing part nestification the inner casing, wherein:

the inner shell is internally and alternately filled with a first insulating layer and a second insulating layer, and the adapter pins are embedded in the space formed by the first insulating layer and the second insulating layer and are limited.

The invention has the beneficial effects that:

the coaxial connectors with different interfaces are quickly switched, the performance loss of the product is low, the voltage standing wave ratio is low, the installation and locking are convenient and quick, the cost is low, the anti-rotation function of the product is realized, the electrical performance is stable, and the excellent transmission of radio frequency signals is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of the structure of the present invention;

FIG. 2 is a front half-sectional view of the inner and outer housings of the present invention after mating;

FIG. 3 is a front half sectional view of the inner housing of the present invention;

FIG. 4 is a perspective view of the outer housing of the present invention;

FIG. 5 is a perspective view of the inner housing of the present invention;

FIG. 6 shows simulation results of the RF coaxial adapter of the present invention

Wherein:

1. an outer housing; 2. an inner housing; 11. a first housing; 12. a second housing; 13. a first insulating layer; 14. a second insulating layer; 15. a first gap; 16. a second gap; 17. a first retainer ring; 3. a connecting nut; 21. a second retainer ring; 41. a pin housing; 42. a needle tube; 43. inserting a pin; 5. a rubber pad; 6. a clamp spring; 7. and (4) straight knurling.

Detailed Description

The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the embodiments described are only a few embodiments of the present disclosure, and not all embodiments. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. In addition, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to or other than one or more of the aspects set forth herein.

The novel anti-rotation radio frequency coaxial adapter shown in fig. 1 comprises an outer shell 1, an inner shell 2 and an adapter pin, wherein the outer shell 1 is partially nested in the inner shell 2, and wherein: the inner shell 2 is filled with a first insulating layer 13 and a second insulating layer 14 at intervals, and a switching pin is embedded in a space formed by the first insulating layer 13 and the second insulating layer 14 and is limited. The first insulating layer 13 and the second insulating layer 14 are cross-over or plastic or other prior art insulating material.

As an embodiment provided in the present disclosure, as shown in fig. 2, the inner housing 2 includes a first housing 11 and a second housing 12, and as shown in fig. 5, the size of the first housing 11 is larger than that of the second housing 12, wherein: one end of the second housing 12 is partially embedded in the first housing 11, as shown in fig. 3, and is connected at least by means of the snap spring 6, and the other end is in interference fit with the outer housing 1 at a position a in the drawing. The clamp spring 6 is a common connection mode in the prior art, and aims to fix the two parts. The length of the outer shell 1 and the inner shell 2 after combination is larger than that of the adapter pin, the adapter pin comprises a pin 43, and the pin 43 does not extend out of the outer shell 1 or the inner shell 2, so that the adapter pin is convenient to mount after being butted with a connector.

As a specific embodiment provided in the present disclosure, a first gap 15 is provided on an inner wall surface of the second shell 12 near one end of the outer shell 1, and a second gap 16 is provided on an outer wall surface far from one end of the outer shell 1, where the first gap 15 is to increase a force applied to the first insulating layer 13, and the second gap 16 is to further increase a fastening force between the first shell 11 and the second shell 12, where:

the second gap 16 is provided with a connecting nut 3, and a bolt is arranged at a corresponding position on the first shell 11 to fix the first shell 11 and the second shell 12; the first insulating layer 13 extends into the first notch 15 (partially embedded in the first notch 15) from the inner wall surface of one end of the second shell 12, the second insulating layer 14 is arranged at the position of the second shell 12 close to the port of the outer shell 1, and the first insulating layer 13 and the second insulating layer 14 are formed with mounting areas for mounting the adapter pins.

As a specific implementation mode provided by the scheme, the adapter pin is a product in the prior art, and the adapter pin is mainly applied to the conversion between the CP-50-169FB coaxial connector and the TNC coaxial connector, so that the butt joint problem of the connectors between different interfaces is solved. The adapter pin is a double-ended pin 43, and comprises a pin 43, a pin housing 41 at the middle position and a needle tube 42, wherein:

the two ends of the pin housing 41 are resisted between the first insulating layer 13 and the second insulating layer 14, so that the pin housing 41 is fastened, and the pin 43 is prevented from rotating along the axial direction of the adapter pin. As shown in fig. 3, a rubber gasket 5 for sealing is mounted between the second slit 16 and the first housing 11.

As an embodiment provided in the present disclosure, as shown in fig. 4, the outer shell 1 is provided with a gradual change structure (a variable cross-section structure), and the largest portion is fitted with the second shell 12 in an interference manner. The first housing 11 is provided with a straight knurl for preventing rotation in the circumferential direction. The rigidity of the outer shell 1 is improved by the variable cross section 7, wherein the diameter of the variable cross section is gradually reduced towards the right by taking the drawing placing direction as reference, so that good rigidity transition is formed, and the butt joint with the coaxial connector is facilitated.

As a specific embodiment provided by the present disclosure, in order to further improve the fixing performance of the contact pin 43, prevent movement in the axial direction, and prevent rotation in the axial direction, the first retaining ring 17 is embedded in one end of the first insulating layer 13 away from the outer shell 1, and one end of the first retaining ring 17 is connected to the second shell 12, two ends of the left needle tube 42 are resisted between the first retaining ring 17 and the contact pin housing 41, the left contact pin extends out of the first retaining ring 17 and is connected to a corresponding adapter, the left contact pin is limited (axially) by the action of the first retaining ring 17 and the contact pin housing 41, and the fastening force of the first insulating body to the left needle tube 42 is increased when a force is applied, so as to prevent rotation. A second retainer ring 21 is installed in an end opening of the outer shell 1 far away from the inner shell 2, and the needle tube 42 at one end of the adapter pin tightly penetrates through the second retainer ring 21. Preferably, the first retainer ring 1 is made of an insulating material, or both the first retainer ring 17 and the second retainer ring 21 are made of an insulating material.

The first insulating layer 13 is stressed by the acting force of the outer shell 1 and acts on the switching contact pin, so that the switching contact pin is ensured not to rotate relative to the inner shell 2 and the outer shell 1, the insertion loss and the voltage standing-wave ratio of the radio-frequency signal are ensured, and the complete transmission of the signal is finally realized. The technical scheme is finally determined by the design of the structures of the inner shell 2 and the outer shell 1 and the size simulation of the inner air pore cavity, the technical performance of the product is ensured, and a simulation result is shown in figure 6.

The invention has the advantages that: the radio frequency coaxial adapter can realize the quick switching of coaxial connectors with different interfaces (realize the switching between a CP-50-169FB coaxial connector and a TNC coaxial connector and prevent the connectors from rotating so as to improve the insertion loss, the voltage standing wave ratio and other electrical properties), and has the advantages of low loss on product performance, low voltage standing wave ratio, convenient and quick installation and locking, low cost and the like. Through the design and simulation verification of the interference structure, the anti-rotation function of the product is realized, the electrical property is stable, and the excellent transmission of radio frequency signals is ensured. On the basis of meeting the performance requirements, the product is innovatively designed, factors such as appearance, weight, maintenance cost and the like are considered, the process rationality is ensured, and the product cost is reduced.

And complete transmission of signals is better realized. Through the design of the inner shell and the outer shell structure and the size simulation of the inner air hole cavity, the technical scheme is finally determined, the technical performance of the product is ensured, the simulation result is shown in fig. 6, the curve is smooth, the performance is in an ascending trend, and the transmission performance is improved.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present disclosure should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A novel anti-rotation radio frequency coaxial adapter comprising an outer housing, an inner housing and an adapter pin, the outer housing partially nesting the inner housing, wherein:

2. The novel anti-rotation radio frequency coaxial adapter of claim 1, wherein the inner housing comprises a first housing and a second housing, the first housing having a size that is larger than the second housing, wherein:

one end part of the second shell is embedded into the first shell and is connected at least in a clamping spring mode, and the other end of the second shell is in interference fit with the outer shell;

the length of the outer shell and the inner shell after combination is larger than that of the adapter pin.

3. The novel anti-rotation radio frequency coaxial adapter according to claim 2, wherein the inner wall surface of the second housing adjacent to one end of the outer housing is provided with a first notch, and the outer wall surface away from one end of the outer housing is provided with a second notch, wherein:

a connecting nut is arranged on the second gap, a bolt is arranged at a corresponding position on the first shell, and the first shell and the second shell are fixed;

the first insulating layer extends into the first notch from the inner wall surface of one end of the second shell, the second insulating layer is arranged at the position, close to the port of the outer shell, of the second shell, and an installation area provided with a switching contact pin is formed on the first insulating layer and the second insulating layer.

4. The novel anti-rotation RF coaxial adapter of claim 3, wherein the adapter pin is a double ended pin comprising a pin, a pin housing at an intermediate position, and a needle cannula, wherein:

the two ends of the pin shell are resisted between the first insulating layer and the second insulating layer, so that the pin shell is fastened, and the pins are prevented from rotating along the circumferential direction of the adapter pins.

5. The novel anti-rotation radio frequency coaxial adapter according to claim 4, wherein a rubber gasket for sealing is installed between the second gap and the first shell.

6. The novel anti-rotation radio frequency coaxial adapter of claim 4, wherein the outer housing is a tapered structure, and the largest dimension portion is engaged with the second housing in an interference manner.

7. The novel anti-rotation radio frequency coaxial adapter as claimed in claim 4, wherein the first housing is circumferentially provided with an anti-rotation straight knurl.

8. The novel anti-rotation radio frequency coaxial adapter as claimed in claim 4, wherein a first retaining ring is embedded in an end of the first insulating layer away from the outer housing, and an end of the first retaining ring is connected to the second housing, so as to increase a fastening force of the first insulating layer.

9. The novel anti-rotation RF coaxial adapter of claim 8, wherein a second retaining ring is mounted in an end of the outer housing remote from the inner housing, and the needle cannula at the end of the adapter pin passes through the second retaining ring tightly.