Broadband high-power coupling attenuator

Abstract

The broadband high-power coupling attenuator comprises a shell and a cover plate arranged on the side face of the shell, the cover plate is detachably connected with the shell through a fixing screw, and the fixing screw comprises a threaded column in threaded connection with the shell and a screw end arranged at the end, away from the shell, of the fixing screw. A screwing groove used for being inserted into a wrench to conduct screwing is formed in the side, away from the threaded column, of the screw end. The fixing screw is provided with a reinforcing assembly, the reinforcing assembly comprises a first groove which is formed in the inner side of the periphery of the screw end and corresponds to the screwing groove, and the inner side of the first groove is movably connected with a stress block in the radial direction of the screw end. According to the broadband high-power coupling attenuator, the stability between the fixing screws and the shell can be improved after the fixing screws are screwed through the reinforcing assemblies arranged on the fixing screws, so that the stability between the cover plate and the shell is improved, the loosening possibility is reduced, and the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of coupling attenuators, and in particular to a broadband high-power coupling attenuator. Background Technology

[0002] Wideband high-power coupling attenuators are primarily used for signal attenuation and coupling in wireless systems. In microwave and radio frequency communications, radar, and test and measurement fields, signal processing and transmission often need to operate over a wide frequency range while simultaneously handling high power. Therefore, wideband high-power coupling attenuators have emerged to meet the demands of these complex applications.

[0003] In existing technologies, coupling attenuators generally consist of a housing and a cover plate. The cover plate is usually fixed to the housing with multiple screws. However, if the screws do not have sufficient preload during initial installation, or if the preload decreases during use due to some reason (such as material creep, temperature changes, etc.), the screws are prone to loosening. Vibration and impact can also cause the screws to loosen. Once loosening occurs, it will affect the stability and sealing between the cover plate and the housing, which can easily lead to safety hazards.

[0004] Therefore, it is necessary to propose a broadband high-power coupling attenuator to solve the above problems. Utility Model Content

[0005] The main objective of this invention is to provide a broadband high-power coupling attenuator that can effectively solve the problems in the background technology.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A broadband high-power coupling attenuator includes a housing and a cover plate disposed on the side of the housing. The cover plate is detachably connected to the housing by a fixing screw. The fixing screw includes a threaded post that is threaded to the housing and a screw end disposed at the end of the fixing screw away from the housing. The screw end is provided with a screwing groove for inserting a wrench to tighten on the side away from the threaded post.

[0008] The fixing screw is provided with a reinforcing component, which includes a first groove disposed on the inner side of the screw end and corresponding to the screw groove. A force-bearing block is movably connected to the inner side of the first groove along the radial direction of the screw end. An elastic element is transversely disposed between the side of the force-bearing block away from the screw groove and the inner wall of the first groove. In the initial state, one end of the force-bearing block extends into the inner side of the screw groove. A second groove communicating with the first groove is provided at the end of the threaded post near the screw end. A slider is movably connected to the inner side of the second groove along the axial direction of the threaded post. The force-bearing block has a connecting arm extending into the inner side of the second groove and fixedly connected to the slider at one end near the threaded post. The connecting arm has a guide block protruding from the side wall of the connecting arm at the end away from the force-bearing block. The slider has a guide groove corresponding to the guide block at an incline on its side wall. The guide block and the guide groove are movably guided and matched. The slider is configured to move upward when the connecting arm moves away from the axis of the threaded post. The slider has a stop post at the end away from the screw end. In the initial state of the elastic element, the end of the stop post away from the slider protrudes from the end of the threaded post away from the screw end.

[0009] Preferably, the end of the force-bearing block away from the threaded post is an inclined surface.

[0010] Preferably, the elastic element is a spring.

[0011] Preferably, the guide block is rotatably mounted on the side wall of the connecting arm.

[0012] Preferably, the end of the threaded post away from the screw end is provided with a through hole communicating with the second groove, and the abutment is movably connected to the inside of the through hole.

[0013] Preferably, the inner wall of the second groove is provided with a guide rail corresponding to the slider, and the side of the slider is movably guided to the guide rail.

[0014] Preferably, the housing has a cavity, and the cavity has a load, which is made of silicon carbide.

[0015] Preferably, a coupling attenuation adjustment hole is provided on one side of the housing.

[0016] Preferably, the housing is provided with a positioning pin protruding from the side wall of the housing near the cover plate, and the cover plate is provided with a through hole corresponding to the positioning pin, and the positioning pin is inserted into the through hole on the cover plate.

[0017] Compared with the prior art, this utility model provides a broadband high-power coupling attenuator with the following advantages:

[0018] This broadband high-power coupling attenuator increases the stability between the fixing screw and the housing after the fixing screw is tightened by a reinforcement component on the fixing screw. This, in turn, increases the stability between the cover plate and the housing, reduces the possibility of loosening, and increases safety. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a structural diagram of the present invention in its disassembled state;

[0021] Figure 3 This is a side view of the casing of this utility model.

[0022] Figure 4 This is a cross-sectional structural diagram of the fixing screw of this utility model.

[0023] In the diagram: 1. Housing; 2. Cover plate; 3. Coupling attenuation adjustment hole; 4. Cavity; 5. Positioning pin; 6. Fixing screw; 7. Load; 8. Threaded post; 9. Screw end; 10. Tightening groove; 11. Force-bearing block; 12. Inclined surface; 13. First groove; 14. Elastic element; 15. Second groove; 16. Connecting arm; 17. Through hole; 18. Abutment; 19. Slider; 20. Guide groove; 21. Guide block; 22. Guide rail. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figure 1-4 As shown, a broadband high-power coupling attenuator uses waveguide coupling to achieve the attenuator function and adopts the standard WR187 / BJ40 waveguide port. It mainly includes a housing 1 and a cover plate 2 set on the side of the housing 1. A cavity 4 is set in the housing 1, and a load 7 is set in the cavity 4. The load 7 is made of silicon carbide and covers the full frequency band of WR187 / BJ48 (3.94-5.99GHz). The product has a power handling capacity of more than 200W and has low attenuation fluctuation and low VSWR performance. A coupling attenuation adjustment hole 3 is set on one side of the housing 1, and the attenuation adjustment range is 64-68dB. The cover plate 2 is detachably connected to the housing 1 by a fixing screw 6. The fixing screw 6 includes a threaded post 8 that is threaded to the housing 1 and a screw end 9 set on the end of the fixing screw 6 away from the housing 1. A screw end 9 is set on the side away from the threaded post 8 for inserting a wrench for tightening.

[0026] Furthermore, a reinforcing component is provided on the fixing screw 6. The reinforcing component includes a first groove 13 located on the inner side of the screw end 9 and corresponding to the screw groove 10. A force-bearing block 11 is movably connected to the inner side of the first groove 13 along the radial direction of the screw end 9. An elastic element 14 is transversely arranged between the side of the force-bearing block 11 away from the screw groove 10 and the inner wall of the first groove 13. The elastic element 14 is preferably a spring. In the initial state, one end of the force-bearing block 11 extends into the inner side of the screw groove 10. The end of the force-bearing block 11 away from the threaded post 8 is a slope. A second groove 15 communicating with the first groove 13 is provided at the end of the threaded post 8 near the screw end 9. A slider 19 is movably connected to the inner side of the second groove 15 along the axial direction of the threaded post 8. To increase stability, a guide rail 22 corresponding to the slider 19 is provided on the inner wall of the second groove 15. The side of the slider 19 is movably guided to the guide rail 22. The end of the force-bearing block 11 near the threaded post 8 is provided with a connecting arm 16 extending into the inner side of the second groove 15 and fixedly connected to the slider 19. The side wall of the connecting arm 16 away from the force-bearing block 11 is provided with a guide block 21 protruding from the side wall of the connecting arm 16. In order to reduce friction, the guide block 21 is rotatably disposed on the side wall of the connecting arm 16. The side wall of the slider 19 is inclinedly provided with a guide groove 20 corresponding to the guide block 21, and the guide block 21 and the guide groove 20 are movably guided and matched. It is configured such that when the connecting arm 16 is displaced in a direction away from the axis of the threaded post 8, the slider 19 moves upward. The end of the slider 19 away from the screw end 9 is provided with a stop post 18. The end of the threaded post 8 away from the screw end 9 is provided with a through hole 17 communicating with the second groove 15. The stop post 18 is movably connected to the inner side of the through hole 17, and in the initial state of the elastic member 14, the end of the stop post 18 away from the slider 19 protrudes from the end of the threaded post 8 away from the screw end 9.

[0027] In addition, to facilitate the installation of the fixing screw 6, a positioning pin 5 protruding from the side wall of the housing 1 is provided on the side of the housing 1 near the cover plate 2. The cover plate 2 is provided with a through hole corresponding to the positioning pin 5, and the positioning pin 5 is inserted into the through hole on the cover plate 2.

[0028] It should be noted that this utility model is a broadband high-power coupling attenuator. In use, the cover plate 2 covers one side of the housing 1, so that the positioning pin 5 is inserted into the cover plate 2, and the mounting hole on the cover plate 2 and the housing 1 are matched. Then, the fixing screw 6 is tightened. When tightening, a wrench is inserted into the tightening groove 10 at one end of the fixing screw 6. When the wrench is inserted, the inclined surface on one side of the force block 11 will cause the force block 11 to displace and compress the elastic element 14. At the same time, the force block 11 drives the guide block 21 to move through the connecting arm 16. Under the action of the guide groove 20, the slider 19 of the guide block 21 moves upward, and the abutment 18 is driven upward by the slider 19. After tightening, the wrench is pulled out, the elastic element 14 returns to a certain distance, and the abutment 18 moves outward. Due to the reverse force of the elastic element 14, one end of the abutment 18 will abut against the inner wall of the mounting hole on the cover plate 2, thereby increasing the axial pressure of the threaded column 8, reducing the possibility of loosening, and ensuring the stability between the cover plate 2 and the housing 1.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A broadband high-power coupling attenuator, comprising a housing (1) and a cover plate (2) disposed on the side of the housing (1), characterized in that: The cover plate (2) and the housing (1) are detachably connected by a fixing screw (6). The fixing screw (6) includes a threaded post (8) that is threaded to the housing (1) and a screw end (9) located at the end of the fixing screw (6) away from the housing (1). The screw end (9) is provided with a screwing groove (10) for inserting a wrench to tighten on the side away from the threaded post (8). The fixing screw (6) is provided with a reinforcing component, which includes a first groove (13) located on the inner side of the screw end (9) and corresponding to the screw groove (10). A force-bearing block (11) is movably connected to the inner side of the first groove (13) along the radial direction of the screw end (9). An elastic element (14) is provided transversely between the side of the force-bearing block (11) away from the screw groove (10) and the inner wall of the first groove (13). When the elastic element (14) is in its initial state, one end of the force-bearing block (11) extends to the inner side of the screw groove (10). A second groove (15) communicating with the first groove (13) is provided at the end of the threaded post (8) near the screw end (9). A slider (19) is movably connected to the inner side of the second groove (15) along the axial direction of the threaded post (8). The force-bearing block (11) A connecting arm (16) is provided at one end near the threaded post (8) and extends into the inner side of the second groove (15) and is fixedly connected to the slider (19). A guide block (21) protruding from the side wall of the connecting arm (16) away from the force block (11) is provided on the side wall of the connecting arm (16). A guide groove (20) corresponding to the guide block (21) is provided on the side wall of the slider (19). The guide block (21) and the guide groove (20) are movably guided and matched. The slider (19) is configured to move upward when the connecting arm (16) moves away from the axis of the threaded post (8). A stop post (18) is provided at one end of the slider (19) away from the screw end (9). When the elastic element (14) is in the initial state, the end of the stop post (18) away from the slider (19) protrudes from the end of the threaded post (8) away from the screw end (9).

2. The broadband high-power coupling attenuator according to claim 1, characterized in that: The end of the force-bearing block (11) away from the threaded column (8) is an inclined surface.

3. The broadband high-power coupling attenuator according to claim 1, characterized in that: The elastic element (14) is a spring.

4. A broadband high-power coupling attenuator according to claim 1, characterized in that: The guide block (21) is rotatably mounted on the side wall of the connecting arm (16).

5. A broadband high-power coupling attenuator according to claim 1, characterized in that: The threaded post (8) has a through hole (17) at one end away from the screw end (9) that communicates with the second groove (15), and the abutment (18) is movably connected to the inside of the through hole (17).

6. A broadband high-power coupling attenuator according to claim 1, characterized in that: The inner wall of the second groove (15) is provided with a guide rail (22) corresponding to the slider (19), and the side of the slider (19) is movably guided and connected to the guide rail (22).

7. A broadband high-power coupling attenuator according to claim 1, characterized in that: The housing (1) is provided with a cavity (4), and a load (7) is provided in the cavity (4), and the load (7) is made of silicon carbide.

8. A broadband high-power coupling attenuator according to claim 1, characterized in that: A coupling attenuation adjustment hole (3) is provided on one side of the housing (1).

9. A broadband high-power coupling attenuator according to claim 1, characterized in that: The housing (1) has a positioning pin (5) protruding from the side wall of the housing (1) near the cover plate (2). The cover plate (2) has a through hole corresponding to the positioning pin (5), and the positioning pin (5) is inserted into the through hole on the cover plate (2).

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