A high-vibration-resistant integrated waveguide coaxial converter

Abstract

The utility model discloses a high anti -vibration integrated waveguide coaxial converter, integrated shell, coaxial connector and end cover, the integrated shell includes integrated flange plate, circular waveguide pipe and integrated mounting seat, the integrated flange plate is equipped with the continuous circular conical surface transition structure at the root joint of circular waveguide pipe, the coaxial connector is connected through the internal thread wall of integrated mounting seat of outer thread, the end cover sets up at the right -hand member of circular waveguide pipe, the utility model has the advantages of: through integrated shell structure design, integrated flange plate, circular waveguide pipe, integrated mounting seat integral forming, the interface fracture risk of traditional welding type waveguide converter is thoroughly eliminated, and the stress dispersion effect of the stress characteristic of uniform distribution of circular waveguide pipe section and conical surface transition structure is combined, makes stress concentration coefficient reduce under the vibration environment, and compared with the transmission welding type structure, the anti -vibration life is improved.

Description

Technical Field

[0001] This utility model relates to a high vibration-resistant integrated waveguide coaxial converter. Background Technology

[0002] Right-angle flange-mounted waveguide-to-coaxial converters are among the most widely used types of waveguide-to-coaxial converters. They are compact, easy to install, and effectively achieve high-efficiency energy conversion between waveguides and coaxial transmission lines. In microwave and millimeter-wave systems, waveguides are often used for high-frequency signal transmission due to their low loss and high power capacity, while coaxial cables are widely used for connections between devices due to their flexibility and ease of use. The right-angle flange-mounted design allows waveguide-to-coaxial converters to adapt to complex system layouts while ensuring good impedance matching and signal integrity, thus finding wide application in radar, communications, and electronic warfare fields.

[0003] The housing of the conventional right-angle flange mounted waveguide is generally composed of a separate split flange (10) and a rectangular waveguide (30) that has been pre-cut and processed with other features. The two are connected by welding to form a welded area (20).

[0004] As can be seen from the above introduction, the welding area (20) between the split flange (10) and the rectangular waveguide (30) is a weak link. It is affected by factors such as welding materials, welding process equipment and welding process parameters, which can easily cause fluctuations in welding quality, thereby affecting the strength and reliability of the weld. Especially during high-speed flight or maneuvering, the vibrations that the equipment is subjected to often have the characteristics of wide frequency band and high intensity, which can easily lead to the risk of fracture failure. In view of this, this utility model proposes a high vibration-resistant integrated waveguide coaxial converter to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a highly vibration-resistant integrated waveguide coaxial converter to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high vibration-resistant integrated waveguide coaxial converter, comprising:

[0008] Integrated housing, coaxial connector, and end caps;

[0009] The integrated housing includes an integrated flange, a circular waveguide, and an integrated mounting base, wherein the integrated flange, the circular waveguide, and the integrated mounting base are integrally formed structures;

[0010] The integrated mounting base is disposed on the side wall of the circular waveguide, and the integrated mounting base has an internal threaded wall inside;

[0011] The integral flange and the root of the circular waveguide are provided with a continuous conical surface transition structure.

[0012] The coaxial connector is connected to the internal threaded wall of the integrated mounting base via an external thread.

[0013] The end cap is located at the right end of the circular waveguide.

[0014] As an improvement to the above technical solution, the circular waveguide has a rectangular waveguide cavity that penetrates the shell.

[0015] The integrated mounting base also has a coaxial hole that is orthogonally connected to the rectangular waveguide cavity.

[0016] As an improvement to the above technical solution, the coaxial connector is provided with an inner conductor probe, and the coaxial connector is connected to an integrated mounting base, so that the conductor probe extends into the coaxial hole.

[0017] As an improvement to the above technical solution, the right end of the circular waveguide is provided with a mounting groove, and the end cap is press-fitted into the mounting groove to seal the rectangular waveguide cavity.

[0018] As an improvement to the above technical solution, the mating surface between the end cap and the circular waveguide is provided with an annular sealing groove, and a sealing ring is provided in the annular sealing groove.

[0019] As an improvement to the above technical solution, the radius of curvature R of the generatrix of the conical transition structure satisfies: 0.2D≤R ≤0.5D, where D is the outer diameter of the circular waveguide.

[0020] As an improvement to the above technical solution, the central axis of the integrated mounting base intersects perpendicularly with the axis of the circular waveguide, and the axis of the coaxial hole passes through the center line of the wide side of the rectangular waveguide cavity.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] Through the integrated shell structure design, namely the integral molding of the flange, circular waveguide, and mounting base, the risk of interface fracture of traditional welded waveguide converters is completely eliminated. Combined with the uniform stress characteristics of the circular waveguide cross section and the stress diffusion effect of the conical transition structure, the stress concentration factor is reduced in the vibration environment, and the vibration resistance life is improved compared with the transmission welded structure.

[0023] Meanwhile, apart from the integrated mounting base, the rest adopts a rotating and symmetrical structure, which facilitates the one-time processing of the rotating and symmetrical structure by the processing equipment. Under the premise of eliminating welding process and reducing assembly steps, the product weight is reduced and the material cost is lowered, which is significantly adapted to the high reliability and lightweight requirements of the aerospace field. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the welding of a split flange and a rectangular waveguide in the prior art;

[0025] Figure 2 This is a schematic diagram of the structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the circular waveguide of this utility model;

[0027] Figure 4 This is a schematic diagram showing the positions of the integrated flange and circular waveguide of this utility model;

[0028] Figure 5 This is a cross-sectional view of the circular waveguide of this utility model;

[0029] Figure 6 This is a schematic diagram of the coaxial connector of this utility model;

[0030] Figure 7 This is a schematic diagram of the end cap structure of this utility model.

[0031] In the figure: 10, split flange; 20, welding area; 30, rectangular waveguide; 40, integrated housing; 41, integrated flange; 42, circular waveguide; 421, mounting groove; 43, integrated mounting base; 431, internal threaded wall; 432, coaxial hole; 44, rectangular waveguide cavity; 50, coaxial connector; 51, probe; 60, end cap; 70, conical transition structure. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example:

[0034] like Figure 1-7 As shown, this embodiment proposes a high vibration-resistant integrated waveguide-coaxial converter, comprising:

[0035] Integrated housing 40, coaxial connector 50, and end cap 60;

[0036] The integrated housing 40 includes an integrated flange 41, a circular waveguide 42, and an integrated mounting base 43, wherein the integrated flange 41, the circular waveguide 42, and the integrated mounting base 43 are integrally formed structures.

[0037] The integrated mounting base 43 is disposed on the side wall of the circular waveguide 42, and the integrated mounting base 43 has an internal threaded wall 431 inside;

[0038] The root junction of the integrated flange 41 and the circular waveguide 42 is provided with a continuous conical surface transition structure 70.

[0039] The coaxial connector 50 is connected to the internal threaded wall 431 of the integrated mounting base 43 via an external thread.

[0040] The end cap 60 is located at the right end of the circular waveguide 42.

[0041] In this embodiment, during the overall assembly, the coaxial connector 50 is connected to the internal thread wall 431 of the integrated mounting base 43 via the external thread, so that the coaxial connector 50 extends into the inner cavity of the circular waveguide 42, completing the assembly process of the coaxial connector 50 and the circular waveguide 42. Then, the end cap 60 is installed on the right end of the circular waveguide 42.

[0042] Through the integrated housing 40 structure design, namely the integrated flange 41, circular waveguide 42, and integrated mounting base 43 are integrally formed, the risk of interface fracture of traditional welded waveguide converters is completely eliminated. Combined with the uniform stress characteristics of the cross section of the circular waveguide 42 and the stress diffusion effect of the conical surface transition structure 70, the stress concentration coefficient under vibration environment is reduced, and the vibration resistance life is improved compared with the transmission welded structure.

[0043] Meanwhile, apart from the integrated mounting base 43, the rest adopt a rotating and symmetrical structure, which facilitates the one-time processing of the rotating and symmetrical structure by the processing equipment. Under the premise of eliminating welding process and reducing assembly steps, the product weight is reduced and the material cost is reduced, which is significantly adapted to the high reliability and lightweight requirements of the aerospace field.

[0044] In this case, the rotating body is a circular waveguide 42 and a conical transition structure 70.

[0045] Specifically, the circular waveguide 42 has a rectangular waveguide cavity 44 that penetrates the housing inside;

[0046] The integrated mounting base 43 also has a coaxial hole 432 that is orthogonally connected to the rectangular waveguide cavity 44.

[0047] In this embodiment, the through-type standardized design of the rectangular waveguide cavity 44 and the orthogonal interconnection structure of the coaxial hole 432 work together to maintain the standard waveguide impedance matching while facilitating one-time processing and eliminating the need for subsequent positioning and debugging procedures.

[0048] Specifically, the coaxial connector 50 is provided with an inner conductor probe 51, and the coaxial connector 50 is connected to the integrated mounting base 43, so that the conductor probe 51 extends into the coaxial hole 432.

[0049] Specifically, the right end of the circular waveguide 42 is provided with a mounting groove 421, and the end cap 60 is press-fitted into the mounting groove 421 to enclose the rectangular waveguide cavity 44.

[0050] In this embodiment, the interference fit between the mounting groove 421 and the end cap 60 can ensure the structural integrity of the cavity end.

[0051] Specifically, the mating surface of the end cap 60 and the circular waveguide 42 is provided with an annular sealing groove, and a sealing ring is provided in the annular sealing groove.

[0052] In this embodiment, the sealing performance can be further guaranteed by the cooperation of the annular sealing groove and the sealing ring when the end cap 60 is pressed into the mounting groove 421.

[0053] Specifically, the radius of curvature R of the generatrix of the conical transition structure 70 satisfies: 0.2D ≤ R ≤ 0.5D, where D is the outer diameter of the circular waveguide 42.

[0054] Specifically, the central axis of the integrated mounting base 43 intersects perpendicularly with the axis of the circular waveguide 42, and the axis of the coaxial hole 432 passes through the center line of the wide side of the rectangular waveguide cavity 44.

[0055] In this embodiment, by using the orthogonal design of the axis of the integrated mounting base 43 and the axis of the circular waveguide 42, and by ensuring that the axis of the coaxial hole 432 passes through the center of the wide side of the rectangular waveguide cavity 44, the coaxial connector 50 can be installed in the integrated mounting base 43, allowing the probe 51 to be accurately inserted into the rectangular waveguide cavity 44.

[0056] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high vibration-resistant integrated waveguide coaxial converter, characterized in that: include: Integrated housing (40), coaxial connector (50) and end cap (60); The integrated housing (40) includes an integrated flange (41), a circular waveguide (42), and an integrated mounting base (43), wherein the integrated flange (41), the circular waveguide (42), and the integrated mounting base (43) are integrally formed structures; The integrated mounting base (43) is disposed on the side wall of the circular waveguide (42), and the integrated mounting base (43) has an internal threaded wall (431) inside. The root junction of the integrated flange (41) and the circular waveguide (42) is provided with a continuous conical surface transition structure (70). The coaxial connector (50) is connected to the internal threaded wall (431) of the integral mounting base (43) via an external thread; The end cap (60) is located at the right end of the circular waveguide (42).

2. The high vibration-resistant integrated waveguide coaxial converter according to claim 1, characterized in that: The circular waveguide (42) has a rectangular waveguide cavity (44) that penetrates the shell inside. The integrated mounting base (43) also has a coaxial hole (432) that is orthogonally connected to the rectangular waveguide cavity (44).

3. The high vibration-resistant integrated waveguide coaxial converter according to claim 2, characterized in that: The coaxial connector (50) is provided with an inner conductor probe (51), and the coaxial connector (50) is connected to an integral mounting base (43) so that the conductor probe (51) extends into the coaxial hole (432).

4. The high vibration-resistant integrated waveguide coaxial converter according to claim 1, characterized in that: The right end of the circular waveguide (42) is provided with a mounting groove (421), and the end cap (60) is press-fitted into the mounting groove (421) to seal the rectangular waveguide cavity (44).

5. The high vibration-resistant integrated waveguide coaxial converter according to claim 4, characterized in that: The mating surface between the end cap (60) and the circular waveguide (42) is provided with an annular sealing groove, and a sealing ring is provided in the annular sealing groove.

6. The high vibration-resistant integrated waveguide coaxial converter according to claim 1, characterized in that: The radius of curvature R of the generatrix of the conical transition structure (70) satisfies: 0.2D ≤ R ≤ 0.5D, where D is the outer diameter of the circular waveguide (42).

7. A high vibration-resistant integrated waveguide coaxial converter according to claim 2, characterized in that: The central axis of the integrated mounting base (43) intersects perpendicularly with the axis of the circular waveguide (42), and the axis of the coaxial hole (432) passes through the center line of the wide side of the rectangular waveguide cavity (44).

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