Lightweight, miniaturized and high-temperature-resistant coaxial waveguide converter

Abstract

The utility model discloses a lightweight, miniaturized and high-temperature-resistant coaxial waveguide converter, and belongs to the technical field of microwave passive devices. The light-weight miniaturized high-temperature-resistant coaxial waveguide converter comprises a waveguide cavity, the waveguide cavity is composed of a cavity body and a connecting disc, the light-weight miniaturized high-temperature-resistant coaxial waveguide converter further comprises an inner conductor, the inner conductor is vertically inserted in the cavity body, an insulating medium is horizontally inserted in the waveguide cavity, the inner conductor is arranged on the inner conductor, a shell is arranged at the top of the inner conductor, and the outer shell is arranged on the waveguide cavity. The housing is buckled on the waveguide cavity in a threaded manner, and the waveguide cavity and the housing are connected through threads and are fixed by coating high-temperature-resistant threaded fastening glue, so that the problems that the reliability of tin soldering in a high-temperature environment cannot be guaranteed, materials are slightly deformed due to the welding temperature, the internal key size of a product is influenced, and the index of the product is caused are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave passive devices, in particular to a lightweight, miniaturized, and high-temperature resistant coaxial waveguide converter. Background Art

[0002] Coaxial waveguide converters are essential components in microwave systems, widely used in satellite communications, radar, wireless communications, industrial microwaves, microwave test and measurement systems, and medical microwave systems. Due to the specialized environmental requirements of microwave communications and radar systems, lightweight, miniaturized, high-temperature resistant, and efficient transmission are emerging trends in the development of coaxial waveguide converters. Coaxial waveguide converters should feature a simple structure and easy-to-use interfaces, while also taking into account the limitations of on-site installation.

[0003] Currently, most coaxial waveguide converters in production and life are made of brass, and the welding methods are tin soldering and silver brazing. Under the requirement of miniaturization of products, the reliability of tin soldering cannot be guaranteed in high-temperature environments. The temperature of silver brazing will cause slight deformation of the material, affecting the key internal dimensions of the product, resulting in product indicators not meeting the requirements. Utility Model Content

[0004] The purpose of the utility model is to overcome the problems in the prior art and provide a lightweight, miniaturized, high-temperature resistant coaxial waveguide converter that can achieve lightweight and avoid the problem that the temperature of silver brazing used in miniaturized products will cause slight deformation of the material, affect the key internal dimensions of the product, and cause the product indicators to not meet the requirements.

[0005] The utility model provides a lightweight, miniaturized, and high-temperature resistant coaxial waveguide converter, comprising a waveguide cavity, wherein a first cavity is horizontally opened on the waveguide cavity, and a second cavity is vertically opened, the first cavity is connected to the second cavity, and the utility model further comprises an inner conductor, wherein the inner conductor is vertically inserted in the cavity, an insulating medium is horizontally inserted in the waveguide cavity, the inner conductor is arranged on the inner conductor, a shell is provided on the top of the inner conductor, and the shell is threadedly buckled on the waveguide cavity, and the waveguide cavity is made of lightweight and high-strength aluminum material.

[0006] Preferably, thread fastening glue is applied to the connection between the housing and the waveguide cavity.

[0007] Preferably, grooves are sequentially formed on the shell along the height direction.

[0008] Preferably, the channel is spiral.

[0009] Preferably, the aluminum material is 7075 aluminum alloy.

[0010] Preferably, a mounting hole matching the outer diameter of the inner conductor is provided on the insulating medium, and the inner conductor is installed in the mounting hole.

[0011] Preferably, the insulator is clamped on the inner conductor, and a bushing is provided between the outer shell and the inner conductor. The bushing is tightly fitted with the insulator and press-fitted into the outer shell.

[0012] Preferably, the shell is made of stainless steel with greater hardness.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model connects the waveguide cavity and the shell through threads, abandoning the existing welding method, effectively preventing the high temperature generated by silver brazing from causing slight deformation of the material, affecting the key internal dimensions of the product, and causing product indicators to fail. It solves the problem that the reliability of soldering cannot be guaranteed in high-temperature environments; the waveguide cavity of the utility model uses lightweight and high-strength aluminum to replace the existing brass material, making the coaxial waveguide converter lighter after assembly, thus meeting the use in some special circumstances.

[0015] 2. After the waveguide cavity and the shell are assembled, the utility model applies high-temperature resistant thread fastening glue at the connection between the two to further reinforce the two. The thread fastening glue in the utility model is made of high-temperature resistant material. While reinforcing the assembly of the waveguide cavity and the shell, the thread fastening glue is fluid and can seal the gap between the two. This makes the signal transmission reliability of the assembled coaxial waveguide converter higher when used in a high-temperature environment.

[0016] 3. In the present invention, a groove is provided on the housing without affecting the use of the coaxial waveguide converter, thereby further reducing the overall weight of the coaxial waveguide converter to meet the lightweight requirement.

[0017] 4. The addition of an insulating dielectric in this invention can influence the magnetic field distribution within the coaxial waveguide converter, optimizing the conversion efficiency between the waveguide and the coaxial cable. Furthermore, in high-temperature environments, the converter's internal components and circuits generate significant heat, impacting the converter's stability and reliability. The addition of a dielectric improves heat dissipation, effectively lowering the converter's operating temperature and enhancing long-term reliability.

[0018] 5. The utility model eliminates the silver brazing of the traditional coaxial waveguide converter and adopts a connection structure in which the inner conductor passes through the step-shaped insulating medium, thereby ensuring that the coaxial waveguide converter has stable electrical performance indicators and reliable mechanical performance when high-power high-frequency signals are reliably transmitted in a high-temperature and low-pressure environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall explosion structure of the utility model.

[0020] Figure 2 This is the standard first view of the utility model after installation is completed.

[0021] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle.

[0022] Figure 4 This is the standard second view of the utility model after installation is completed.

[0023] Explanation of the accompanying reference numerals: 1. waveguide cavity; 101. cavity; 102. connecting plate; 2. insulating medium; 3. insulator; 4. inner conductor; 5. bushing; 6. outer shell; 7. groove; 8. mounting hole. DETAILED DESCRIPTION

[0024] The following is combined with Figures 1 to 4 In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the utility model belongs.

[0025] The words “first”, “second” and similar terms used in the specification and claims of the present utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as “include” or “comprise” mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. “Inside”, “outside”, “upper”, “lower”, “far”, “near”, “front”, “back” and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. The drawings in this disclosure are not drawn strictly according to the actual scale. The specific size and quantity of each structure can be determined according to actual needs. The drawings described in this disclosure are only schematic structural diagrams.

[0026] The utility model provides a lightweight, miniaturized, high-temperature resistant coaxial waveguide converter, such as Figure 1 ~Picture~ Figure 4As shown, it includes a waveguide cavity 1, a first cavity is horizontally opened on the waveguide cavity 1, and a second cavity is vertically opened. The first cavity is connected to the second cavity. The waveguide cavity 1 is composed of a cavity 101 and a connecting plate 102, and also includes an inner conductor 4. The inner conductor 4 is vertically inserted in the cavity 101, and an insulating medium 2 is horizontally inserted in the waveguide cavity 1. The inner conductor 4 is arranged on the inner conductor 4. A shell 6 is provided on the top of the inner conductor 4. The shell 6 is threadedly fastened to the waveguide cavity 1. The waveguide cavity 1 is made of lightweight and high-strength aluminum.

[0027] The waveguide cavity 1 is connected to the outer shell 6 by threads, abandoning the existing welding method, and connecting the waveguide cavity 1 body and the outer box, effectively preventing the temperature generated during welding from causing slight deformation of the material, affecting the key internal dimensions of the product, and causing problems with product indicators, thereby solving the problem that the reliability of soldering cannot be guaranteed in a high-temperature environment.

[0028] Preferably, Figure 4 As shown, thread fastening glue is applied to the connection between the mounting hole housing 6 and the waveguide cavity 1.

[0029] After the waveguide cavity 1 and the housing 6 are assembled, a high-temperature resistant thread fastening glue is applied to the connection between the two to further reinforce the two. The thread fastening glue in the utility model is made of a high-temperature resistant material. While reinforcing the assembly of the waveguide cavity 1 and the housing 6, the thread fastening glue is in a fluid state and can seal the gap between the two, making the assembled coaxial waveguide converter more accurate when used.

[0030] Preferably, Figure 1 As shown, a mounting hole 8 matching the outer diameter of the inner conductor 4 is opened on the insulating medium 2, the conductor is installed in the mounting hole 8, the insulator 3 is clamped on the inner conductor 4, and a bushing 5 is provided between the outer shell 6 and the inner conductor 4. The bushing 5 is tightly fitted with the insulator 3 and press-fitted into the outer shell 6.

[0031] The addition of dielectric 2 can influence the magnetic field distribution within the coaxial waveguide converter, optimizing the conversion efficiency between the waveguide and the coaxial cable. Furthermore, in high-temperature environments, the converter's internal components and circuits generate significant heat, impacting the converter's stability and reliability. Adding dielectric 2 improves heat dissipation, effectively lowering the converter's operating temperature and enhancing long-term reliability.

[0032] The insulating medium 2 is set to a stepped shape. When the insulating medium 2 is inserted into the waveguide cavity 1, a certain error will be generated in the conduction. In order to reduce this error, this solution sets the insulating medium 2 to a stepped shape. Without affecting the use of the coaxial waveguide converter, the insulating medium 2 is designed to be stepped through simulation to reduce the error generated when inserting the insulating medium 2.

[0033] The silver brazing of traditional coaxial connectors is eliminated, and the structure of inner conductor 4 and stepped insulating medium 2 is adopted to ensure that the coaxial waveguide converter has stable electrical performance indicators and reliable mechanical performance when high-power high-frequency signals are reliably transmitted in high temperature and low pressure environment.

[0034] Preferably, Figure 1 As shown, the shell 6 is made of stainless steel with relatively high hardness, and grooves 7 are sequentially opened on the shell 6 along the height direction. The grooves 7 are spiral-shaped, and the waveguide cavity 1 is made of lightweight and high-strength aluminum material, and the aluminum material is 7075 aluminum alloy.

[0035] In the present invention, the waveguide cavity 1 uses lightweight and high-strength 7075 aluminum alloy to replace the existing brass material. The 7075 aluminum alloy can withstand high temperatures of 475-635°C and can completely replace brass for use. It also makes the weight of the coaxial waveguide converter lighter after assembly, thereby meeting the use in some special circumstances. Without affecting the use of the coaxial waveguide converter, a groove 7 is opened on the shell 6 to further reduce the overall weight of the coaxial waveguide converter. The groove is set in a spiral shape to achieve the lightweight requirement. At the same time, a compact structural design is adopted to effectively solve the problems of large volume and weight of the coaxial waveguide converter. The shell 6 is made of stainless steel with relatively high hardness, which increases the wear resistance and high temperature resistance of the shell 6 and enhances the service life of the coaxial waveguide converter.

[0036] The method of using the lightweight, miniaturized, high-temperature resistant coaxial waveguide converter of the utility model is as follows:

[0037] The coaxial waveguide converter is assembled by first installing the insulating medium 2 into the waveguide cavity 1, clamping the insulator 3 on the inner conductor 4, pressing the insulator 3 on the bushing 5, and then pressing the bushing 5 on the shell 6. The shell 6 is connected to the waveguide cavity 1 through threads and fixed with thread fasteners. After the assembly is completed, the whole machine is installed for use, and the screws are fixed to the whole machine through the flange holes.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lightweight, miniaturized, high-temperature resistant coaxial waveguide converter, comprising a waveguide cavity (1), wherein a first cavity is horizontally opened on the waveguide cavity (1), and a second cavity is vertically opened on the waveguide cavity (1), wherein the first cavity is connected to the second cavity, and the characteristics are as follows: Also includes: An inner conductor (4) is vertically inserted into the second cavity; An insulating medium (2) is horizontally inserted into the first cavity; an insulator (3) disposed on the inner conductor (4); The outer shell (6) is arranged on the top of the inner conductor (4), and the outer shell (6) is threadedly connected to the waveguide cavity (1). The waveguide cavity (1) is made of lightweight and high-strength aluminum material.

2. A lightweight, miniaturized, high-temperature resistant coaxial waveguide converter according to claim 1, characterized in that: The connection between the housing (6) and the waveguide cavity (1) is coated with thread fastening glue.

3. The lightweight, miniaturized, high-temperature resistant coaxial waveguide converter according to claim 1, characterized in that: Grooves (7) are sequentially formed on the shell (6) along the height direction.

4. The lightweight, miniaturized, high-temperature resistant coaxial waveguide converter according to claim 2, characterized in that: The channel (7) is spiral.

5. The lightweight, miniaturized, high-temperature resistant coaxial waveguide converter according to claim 1, characterized in that: The aluminum material is 7075 aluminum alloy.

6. The lightweight, miniaturized, high-temperature resistant coaxial waveguide converter according to claim 1, characterized in that: The insulating medium (2) is provided with a mounting hole (8) that matches the outer diameter of the inner conductor (4), and the inner conductor (4) is mounted in the mounting hole (8).

7. The lightweight, miniaturized, high-temperature resistant coaxial waveguide converter according to claim 1, characterized in that: The insulator (3) is clamped on the inner conductor (4), and a bushing (5) is provided between the outer shell (6) and the inner conductor (4). The bushing (5) is tightly fitted with the insulator (3) and is press-fitted into the outer shell (6).

8. The lightweight, miniaturized, high-temperature resistant coaxial waveguide converter according to claim 1, characterized in that: The housing (6) is made of stainless steel with relatively high hardness.

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