Waveguide coaxial converter

Abstract

The utility model discloses a waveguide coaxial converter, and particularly relates to the technical field of waveguide coaxial converters, which comprises a converter body, one end of the converter body is provided with a waveguide cavity, and the waveguide cavity is internally provided with a first impedance matching bulge, a second impedance matching bulge and a third impedance matching bulge in sequence from left to right; and a coaxial joint. According to the utility model, the positioning assembly is arranged in the mounting cavity, and the positioning assembly is mainly composed of the threaded column, the cross groove, the movable plate, the spring and the positioning block, so that when the coaxial joint is inserted and mounted on the converter body, the positioning block can move and tightly abut against the outer wall of the coaxial joint; the coaxial connector can be further limited and reinforced after being inserted and installed, so that the connecting plane of the coaxial connector can be tightly attached to the inner wall plane of the installation cavity, the broadband conversion effect is greatly guaranteed, and the actual use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of waveguide coaxial converters, and particularly relates to a waveguide coaxial converter. Background Art

[0002] Waveguide communication is a communication means that uses electromagnetic waves of the TE01 mode in the millimeter wave band to perform long-distance transmission in a circular waveguide (in a relay and regeneration mode). The waveguide coaxial converter is an indispensable passive conversion device in various radar systems, precision guidance systems, electronic countermeasure systems, communication systems, and test equipment.

[0003] In the patent document of "A Ridge Waveguide Coaxial Converter" with the publication number of "CN 113346214 B", the coaxial connector is installed at one end of the ridge waveguide body through a connector flange and bolts, so that the connection plane on the side wall of the ridge waveguide body is attached to the cavity installation plane inside the ridge waveguide body to form a quasi-microstrip transmission structure. And multiple impedance matching waveguide ridges in the cavity can jointly and reliably achieve the broadband conversion from the ridge waveguide to the radio frequency coaxial, which is beneficial to improving the working frequency band. However, in practical applications, since one end of the coaxial connector located outside the ridge waveguide body is fixedly connected to it through a flange and bolts, and the longer extension end is inserted into the installation cavity, it is difficult to effectively ensure that the connection plane of the extension end closely adheres to the cavity installation plane at this time. If the generated gap is large or the connection of the coaxial connector is unstable, it will greatly affect the broadband conversion effect, resulting in poor actual effect. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a waveguide coaxial converter. By arranging a positioning component in the installation cavity, the positioning component is mainly composed of a threaded post, a cross groove, a movable plate, a spring and a positioning block. After the coaxial connector is inserted and installed on the converter body, the positioning block can be moved to tightly abut against the outer wall of the coaxial connector, thereby further limiting and strengthening the inserted and installed coaxial connector, so that the connection plane of the coaxial connector can closely adhere to the inner wall plane of the installation cavity, greatly ensuring the broadband conversion effect and having a good actual use effect, so as to solve the above deficiencies in the technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solution: A waveguide coaxial converter, comprising:

[0006] A converter body, one end of the converter body is provided with a waveguide cavity, and a first impedance matching protrusion, a second impedance matching protrusion and a third impedance matching protrusion are sequentially arranged in the waveguide cavity from left to right;

[0007] Coaxial connector, one end of the coaxial connector is detachably connected to one end of the converter body, and a connection plane is provided on the bottom side of the coaxial connector. An installation cavity communicating with the waveguide cavity is opened at one end of the converter body close to the coaxial connector, and a positioning hole facing the coaxial connector is opened at one end of the converter body. One end of the coaxial connector passes through the positioning hole and extends into the installation cavity, and a positioning component is arranged inside the installation cavity.

[0008] Preferably, a connection flange is fixed at one end of the coaxial connector located outside the converter body. Four fastening bolts are provided at the four ends of the connection flange, and the connection flange is connected to the converter body through the fastening bolts.

[0009] Preferably, the coaxial connector includes a coaxial dielectric layer. A coaxial inner conductor is arranged inside the coaxial dielectric layer, and a coaxial outer conductor is arranged outside the coaxial dielectric layer.

[0010] Preferably, a fixing plate is fixed at one end of the converter body opposite to the coaxial connector. Connection holes are opened at the four ends of the fixing plate.

[0011] Preferably, the positioning component includes a threaded cap fixed above the installation cavity near the top of the converter body. A threaded column is penetrated and connected inside the threaded cap. The bottom end of the threaded column extends into the installation cavity and is movably connected to a movable plate through a bearing. A cross groove is opened at the top end of the threaded column. A spring is connected to the bottom side of the movable plate, and the bottom end of the spring is connected to a positioning block facing the coaxial connector.

[0012] Preferably, a telescopic cylinder is penetrated inside the spring. The top end of the telescopic cylinder is fixedly connected to the movable plate, and the bottom end of the telescopic cylinder is fixedly connected to the positioning block.

[0013] Preferably, sliders are symmetrically fixed at both ends of the movable plate, and sliding grooves matching the sliders are opened on the inner side of the installation cavity.

[0014] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0015] By arranging a positioning component in the installation cavity, the positioning component is mainly composed of a threaded column, a cross groove, a movable plate, a spring and a positioning block. After the coaxial connector is inserted and installed on the converter body, the positioning block can be moved to tightly abut against the outer wall of the coaxial connector, thereby further limiting and strengthening the inserted and installed coaxial connector, so that the connection plane of the coaxial connector can closely fit on the inner wall plane of the installation cavity, greatly ensuring the broadband conversion effect, and the actual use effect is good. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0017] Figure 1 One of the overall structure diagrams of the present utility model;

[0018] Figure 2 One of the overall structure diagrams of the present utility model;

[0019] Figure 3 The internal structure diagram of the converter body of the present utility model;

[0020] Figure 4 The separation structure diagram of the converter body and the coaxial connector of the present utility model;

[0021] Figure 5 The exploded view of the movable plate and the positioning block of the present utility model.

[0022] Explanation of reference numerals:

[0023] 1. Converter body; 2. Fixed plate; 3. Connection hole; 4. Coaxial connector; 41. Coaxial outer conductor; 42. Coaxial dielectric layer; 43. Coaxial inner conductor; 5. First impedance matching protrusion; 6. Second impedance matching protrusion; 7. Third impedance matching protrusion; 8. Installation cavity; 9. Positioning hole; 10. Connection plane; 11. Connection flange; 12. Threaded cap; 13. Movable plate; 14. Telescopic cylinder; 15. Spring; 16. Positioning block; 17. Threaded post; 18. Cross slot; 19. Slide block; 20. Slide groove. Detailed implementation manners

[0024] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the following will further introduce the present utility model in detail in conjunction with the drawings.

[0025] The present utility model provides a waveguide coaxial converter as shown in Figures 1-5 and includes:

[0026] Converter body 1, one end of the converter body 1 is provided with a waveguide cavity, and a first impedance matching protrusion 5, a second impedance matching protrusion 6, and a third impedance matching protrusion 7 are sequentially arranged in the waveguide cavity from left to right;

[0027] The coaxial connector 4 has one end detachably connected to one end of the converter body 1, and a connection plane 10 is provided on the bottom side of the coaxial connector 4. An installation cavity 8 communicating with the waveguide cavity is opened at one end of the converter body 1 close to the coaxial connector 4, and a positioning hole 9 facing the coaxial connector 4 is opened at one end of the converter body 1. One end of the coaxial connector 4 passes through the positioning hole 9 and extends into the installation cavity 8, and a positioning component is provided inside the installation cavity 8.

[0028] A connection flange 11 is fixed to the end of the coaxial connector 4 located outside the converter body 1. Fastening bolts are provided at the four ends of the connection flange 11, and the connection flange 11 is connected to the converter body 1 through the fastening bolts.

[0029] During use, the coaxial connector 4 can be inserted into the positioning hole 9, and its end extends into the installation cavity 8, so that the connection plane 10 can be in close contact with the plane of the inner wall of the installation cavity 8. Then, the connection flange 11 is fixed to the coaxial connector 4 through bolts to achieve preliminary connection.

[0030] The coaxial connector 4 includes a coaxial dielectric layer 42. A coaxial inner conductor 43 is provided inside the coaxial dielectric layer 42, and a coaxial outer conductor 41 is provided outside the coaxial dielectric layer 42.

[0031] A fixing plate 2 is fixed to the end of the converter body 1 opposite to the coaxial connector 4. Connection holes 3 are opened at the four ends of the fixing plate 2.

[0032] The positioning component includes a threaded cap 12 fixed above the installation cavity 8 near the top of the converter body 1. A threaded column 17 is penetrated and connected inside the threaded cap 12. The bottom end of the threaded column 17 extends into the installation cavity 8 and is movably connected to a movable plate 13 through a bearing. A cross slot 18 is opened at the top end of the threaded column 17. A spring 15 is connected to the bottom side of the movable plate 13, and the bottom end of the spring 15 is connected to a positioning block 16 facing the coaxial connector 4.

[0033] A telescopic cylinder 14 is penetrated inside the spring 15. The top end of the telescopic cylinder 14 is fixedly connected to the movable plate 13, and the bottom end of the telescopic cylinder 14 is fixedly connected to the positioning block 16.

[0034] Sliders 19 are symmetrically fixed at both ends of the movable plate 13. Sliding grooves 20 matching the sliders 19 are opened on the inner side of the installation cavity 8. By providing the sliders 19 and the sliding grooves 20, the movable plate 13 can be further supported and limited to ensure the stability of the movable plate 13 during lifting and lowering.

[0035] After the coaxial connector 4 is inserted and installed, the threaded column 17 can be rotated by a cross tool. Under the action of the threaded nut 12, the threaded column 17 can drive the movable plate 13 to move, so that the movable plate 13 drives the positioning block 16 to descend through the spring 15, and then the positioning block 16 is pressed on the outside of the coaxial connector 4. Since the spring 15 is squeezed and contracts to accumulate force, the positioning block 16 can be tightly pressed against the outer wall of the coaxial connector 4 after stopping movement. The spring 15 can be supported and limited by the telescopic tube 14. With the cooperation of this structure, the inserted and installed coaxial connector 4 can be further limited and reinforced, so that the connecting plane 10 of the coaxial connector 4 can be tightly fitted on the inner wall plane of the installation cavity 8, which greatly ensures the broadband conversion effect and has a good actual use effect.

[0036] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A waveguide coaxial converter, characterized in that: include: A converter body (1), wherein a waveguide cavity is provided at one end of the converter body (1), and a first impedance matching protrusion (5), a second impedance matching protrusion (6) and a third impedance matching protrusion (7) are provided in the waveguide cavity in sequence from left to right; A coaxial connector (4), one end of the coaxial connector (4) is detachably connected to one end of a converter body (1), and a connecting plane (10) is provided on the bottom side of the coaxial connector (4); an installation cavity (8) communicating with a waveguide cavity is provided inside the converter body (1) near one end of the coaxial connector (4), and a positioning hole (9) facing the coaxial connector (4) is provided at one end of the converter body (1); one end of the coaxial connector (4) passes through the positioning hole (9) and extends into the installation cavity (8), and a positioning component is provided inside the installation cavity (8).

2. A waveguide-to-coaxial converter according to claim 1, characterized in that: A connecting flange (11) is fixed to one end of the coaxial joint (4) located outside the converter body (1), and fastening bolts are provided at four ends of the connecting flange (11), and the connecting flange (11) is connected to the converter body (1) via the fastening bolts.

3. A waveguide-to-coaxial converter according to claim 1, characterized in that: The coaxial connector (4) comprises a coaxial dielectric layer (42), a coaxial inner conductor (43) is arranged inside the coaxial dielectric layer (42), and a coaxial outer conductor (41) is arranged outside the coaxial dielectric layer (42).

4. The waveguide-to-coaxial converter according to claim 1, characterized in that: A fixing plate (2) is fixed to one end of the converter body (1) relative to the coaxial connector (4), and connection holes (3) are provided at four ends of the fixing plate (2).

5. The waveguide-to-coaxial converter according to claim 1, characterized in that: The positioning assembly comprises a threaded cap (12) fixed on the top of the converter body (1) near the top of the mounting cavity (8), a threaded column (17) extending through the threaded cap (12), the bottom end of the threaded column (17) extending into the mounting cavity (8) and movably connected to a movable plate (13) via a bearing, and a cross groove (18) is provided at the top end of the threaded column (17), the bottom side of the movable plate (13) is connected to a spring (15), and the bottom end of the spring (15) is connected to a positioning block (16) facing the coaxial joint (4).

6. A waveguide-to-coaxial converter according to claim 5, characterized in that: A telescopic tube (14) is inserted into the interior of the spring (15), the top end of the telescopic tube (14) is fixedly connected to the movable plate (13), and the bottom end of the telescopic tube (14) is fixedly connected to the positioning block (16).

7. The waveguide-to-coaxial converter according to claim 5, characterized in that: Slide blocks (19) are symmetrically fixed at both ends of the movable plate (13), and a slide groove (20) matching the slide blocks (19) is provided on the inner side of the installation cavity (8).

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