Multi-channel cavity filter with isolation groove cover plate

Abstract

The utility model discloses a multichannel cavity filter with an isolation groove cover plate, which relates to the technical field of filters and comprises a shell and a cover plate, and the top of the shell is connected with the bottom of the cover plate in a clamping manner; downward pressing structures are arranged at the two ends of the shell and the two ends of the cover plate correspondingly, each downward pressing structure comprises clamping blocks connected to the corners of the shell and the cover plate in a clamped mode, rubber is arranged on the inner sides of the clamping blocks, the two clamping blocks are arranged, a pressure applying rod is fixedly connected between the two clamping blocks, and a mounting base is fixedly connected to the side, away from the shell, of the middle of the pressure applying rod; according to the multi-channel cavity filter with the isolation groove cover plate, the pressing structure is arranged, pressure towards the inner sides of the clamping blocks is applied to the two clamping blocks through the pressure applying rod, so that connection between the shell and the cover plate is reinforced, and only two fixing bolts are used for fixing the shell and the cover plate in the process of reinforcing connection between the shell and the cover plate, so that the connection between the shell and the cover plate is reinforced; and the step of reinforcing the connection between the shell and the cover plate is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a multi-channel cavity filter with an isolation slot cover plate. Background Art

[0002] A cavity filter is a passive electronic component mainly used for signal processing in the RF and microwave bands. It uses the resonance phenomenon of electromagnetic waves in a cavity of a specific size to select or suppress signals of a specific frequency.

[0003] For example, a multi-channel cavity filter with an isolation groove on a cover plate with publication number CN202930520U includes a filter box body, an isolation wall for blocking different channels is formed in the filter box body, and a cover plate is provided on the filter box body, wherein isolation grooves are provided on the mating surfaces of the cover plate and the isolation wall, the isolation grooves are pressed on the isolation wall, and the width of the isolation grooves is smaller than the thickness of the isolation wall. The utility model has the advantages of simple structure and improving the isolation between adjacent channels of the multi-channel cavity filter without increasing the volume and weight of the microwave coaxial cavity filter.

[0004] In the above technical solution, a multi-channel cavity filter with an isolation groove on the cover plate is optimized in the installation structure by opening an isolation groove on the mating surface of the cover plate and the isolation wall. During the actual installation process, the cover plate and the shell of the cavity filter are fastened with multiple screws, which is a relatively cumbersome step. Utility Model Content

[0005] The utility model aims to provide a multi-channel cavity filter with an isolation slot cover plate, so as to solve the problem that the cover plate and the housing of the cavity filter in the above-mentioned background technology are fastened by multiple screws, which is a relatively cumbersome step.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-channel cavity filter with an isolation slot cover plate, comprising a housing and a cover plate, wherein the top of the housing is snap-connected to the bottom of the cover plate;

[0007] Both ends of the shell and the cover plate are provided with a downward pressing structure, and the downward pressing structure includes clamping blocks that are snap-connected with the corners of the shell and the cover plate, and rubber is provided on the inner side of the clamping blocks. There are two clamping blocks, and a pressure rod is fixedly connected between the two clamping blocks, and a mounting seat is fixedly connected to the side of the middle of the pressure rod away from the shell.

[0008] Preferably, two pressing-down structures are provided at both ends of the shell and the cover plate, and the two pressing-down structures are symmetrically distributed with each other, a fixing bolt is threadedly connected between the two mounting seats, and the two pressing-down structures are connected to each other by the fixing bolts to form a whole.

[0009] Preferably, a mounting bolt is threadedly connected to the middle of the cover plate, and the mounting bolt passes through the middle of the cover plate and extends to the bottom of the cover plate, and the portion of the mounting bolt extending to the bottom of the cover plate is threadedly connected to the middle of the inner part of the shell.

[0010] Preferably, a partition plate is provided in the middle of the shell, and the partition plate divides the shell into two independent spaces, and the two independent spaces are distributed in the shell in a mirror-image manner.

[0011] Preferably, a plurality of equidistantly distributed isolation plates are fixedly connected to the interior of the shell, and the isolation plates further separate the spaces separated by the separation plates.

[0012] Preferably, a plurality of equally spaced resonant rods are fixedly connected inside the shell, and each resonant rod is located inside an independent space separated by the partition plate and the isolation plate. Connecting seats are fixedly connected at both ends of the shell, and each connecting seat is distributed at both ends of the independent space inside the partition plate.

[0013] Preferably, a mounting groove is provided at the bottom of the cover plate, and the shape of the bottom of the mounting groove is engaged with the outer contour of the upper end of the partition plate and the isolation plate, a reserved hole is provided in the middle of the cover plate, and the inside of the reserved hole is threadedly connected to the mounting bolt, a mounting hole aligned with the reserved hole is provided in the middle of the outer shell, and the inside of the mounting hole is threadedly connected to the mounting bolt, and a plurality of equidistantly distributed heat dissipating fins are fixedly connected to both sides of the outer shell.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The multi-channel cavity filter with an isolation slot cover is provided with a downward pressing structure, and a pressure rod is used to apply pressure toward the inner side of two clamping blocks, so as to strengthen the connection between the outer shell and the cover. In the process of strengthening the connection between the outer shell and the cover, only two fixing bolts are used to fix them, which simplifies the steps of strengthening the connection between the outer shell and the cover.

[0016] Furthermore, after the installation of the pressing structure is completed, each clamping block is distributed at the corners of the housing and the cover plate to protect the corners of the housing and the cover plate, and to prevent the filter being transported or operated from falling and causing damage to the corners;

[0017] Furthermore, the mounting grooves provided at the bottom of the cover plate are engaged with the upper ends of the partition plate and the isolation plate, and the space separated by the partition plate is sealed, and the position between the shell and the cover plate is fixed, and the position of the shell and the cover plate is fixed when the shell and the cover plate are preliminarily connected, and the shell and the cover plate are preliminarily connected by installing bolts in the reserved holes and the mounting holes, which is convenient for subsequent processing of the shell and the cover plate;

[0018] Furthermore, multiple heat dissipation fins on both sides of the shell are arranged to form a heat dissipation structure. During the operation of the filter, the heat generated inside the shell is transferred to the outside of the shell, and then the heat is discharged through the heat dissipation fins, thereby improving the stability of the filter during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the bottom structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the explosion structure of the cover plate of the utility model;

[0022] Figure 4 This is a schematic diagram of the clamping block structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the cover structure of the utility model;

[0024] Figure 6 This is a schematic diagram of the shell structure of the utility model.

[0025] In the figure: 1. outer shell; 2. cover plate; 3. clamping block; 4. pressure rod; 5. mounting seat; 6. fixing bolt; 7. mounting bolt; 8. partition plate; 9. isolation plate; 10. resonance rod; 11. connecting seat; 12. mounting groove; 13. reserved hole; 14. mounting hole; 15. heat sink fin. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1:

[0027] See also Figure 1 - Figure 6 , the utility model provides the following technical solutions:

[0028] A multi-channel cavity filter with an isolation slot cover plate comprises a housing 1 and a cover plate 2, wherein the top of the housing 1 is snap-connected to the bottom of the cover plate 2;

[0029] Both ends of the shell 1 and the cover plate 2 are provided with a downward pressing structure, which includes a clamping block 3 which is snap-connected with the corners of the shell 1 and the cover plate 2, and the inner side of the clamping block 3 is provided with rubber. There are two clamping blocks 3, and a pressure rod 4 is fixedly connected between the two clamping blocks 3, and a mounting seat 5 is fixedly connected to the side of the middle of the pressure rod 4 away from the shell 1.

[0030] Two pressing structures are provided at both ends of the housing 1 and the cover plate 2, and the two pressing structures are symmetrically distributed with each other. A fixing bolt 6 is threadedly connected between the two mounting seats 5, and the two pressing structures are connected to each other by the fixing bolt 6 to form a whole.

[0031] The middle of the cover plate 2 is internally threadedly connected with a mounting bolt 7 , and the mounting bolt 7 passes through the middle of the cover plate 2 and extends to the bottom of the cover plate 2 , and the portion of the mounting bolt 7 extending to the bottom of the cover plate 2 is threadedly connected to the middle of the inner portion of the housing 1 .

[0032] A partition plate 8 is provided in the middle of the shell 1 , and the partition plate 8 divides the inside of the shell 1 into two independent spaces, and the two independent spaces are distributed inside the shell 1 in a mirror-image manner.

[0033] A plurality of equidistantly distributed isolation plates 9 are fixedly connected to the inside of the housing 1 , and the isolation plates 9 further separate the space separated by the separation plates 8 .

[0034] A plurality of equally spaced resonant rods 10 are fixedly connected inside the outer shell 1, and each resonant rod 10 is located inside an independent space separated by the partition plate 8 and the isolation plate 9. Connecting seats 11 are fixedly connected at both ends of the outer shell 1, and each connecting seat 11 is distributed at both ends of the independent space inside the partition plate 8.

[0035] A mounting groove 12 is provided at the bottom of the cover plate 2, and the shape of the bottom of the mounting groove 12 is engaged with the outer contour of the upper end of the partition plate 8 and the isolation plate 9. A reserved hole 13 is provided in the middle of the cover plate 2, and the inside of the reserved hole 13 is threadedly connected to the mounting bolt 7. A mounting hole 14 aligned with the reserved hole 13 is provided in the middle of the outer shell 1, and the inside of the mounting hole 14 is threadedly connected to the mounting bolt 7, and a plurality of equidistantly distributed heat dissipation fins 15 are fixedly connected to both sides of the outer shell 1. Embodiment 2:

[0036] Based on the first embodiment, the specific working principle is as follows:

[0037] The shell 1 and the cover plate 2 are connected to each other so that the cover plate 2 is snap-connected to the top of the shell 1. At this time, multiple clamping blocks 3 are respectively installed at the corners of the shell 1 and the cover plate 2 so that every two clamping blocks 3 and the pressure rods 4 are aligned with each other, and the two mounting seats 5 will be located on the same vertical line. At this time, the fixing bolts 6 are installed inside the two mounting seats 5, and the two pressure rods 4 are connected to each other through the mutual connection between the mounting seats 5. At the same time, the fixing bolts 6 are continued to be rotated so that the fixing bolts 6 drive the two pressure rods 4 to approach each other, so that the pressure rods 4 apply pressure to the two clamping blocks 3 toward the inner side thereof, thereby reinforcing the connection between the shell 1 and the cover plate 2. In the process of reinforcing the connection between the shell 1 and the cover plate 2, only two fixing bolts 6 are used to fix them, which simplifies the steps of reinforcing the connection between the shell 1 and the cover plate 2;

[0038] After the pressing structure is installed, each clamp block 3 is distributed at the corners of the housing 1 and the cover plate 2 to protect the corners of the housing 1 and the cover plate 2, and to prevent the filter being transported or operated from falling and causing damage to the corners;

[0039] The mounting groove 12 provided at the bottom of the cover plate 2 is engaged with the upper ends of the partition plate 8 and the isolation plate 9, and the space separated by the partition plate 8 is sealed, and the position between the shell 1 and the cover plate 2 is fixed, and the position of the shell 1 and the cover plate 2 is fixed when the shell 1 and the cover plate 2 are preliminarily connected, and the shell 1 and the cover plate 2 are preliminarily connected by installing the mounting bolts 7 in the reserved holes 13 and the mounting holes 14, so as to facilitate the subsequent processing of the shell 1 and the cover plate 2;

[0040] A plurality of heat dissipation fins 15 arranged on both sides of the housing 1 are arranged to form a heat dissipation structure. During the operation of the filter, the heat generated inside the housing 1 is transferred to the outside of the housing 1, and then the heat is discharged through the heat dissipation fins 15, thereby improving the stability of the filter during operation.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-channel cavity filter with an isolation slot cover plate, comprising a housing (1) and a cover plate (2), wherein the top of the housing (1) is snap-connected to the bottom of the cover plate (2); Features: Both ends of the shell (1) and the cover plate (2) are provided with a downward pressing structure, the downward pressing structure comprising a clamping block (3) which is snap-connected with the corners of the shell (1) and the cover plate (2), and the inner side of the clamping block (3) is provided with rubber, two clamping blocks (3) are provided, and a pressure rod (4) is fixedly connected between the two clamping blocks (3), and a mounting seat (5) is fixedly connected to the middle side of the pressure rod (4) away from the shell (1).

2. A multi-channel cavity filter with an isolation slot cover plate according to claim 1, characterized in that: Two pressing-down structures are provided at both ends of the housing (1) and the cover plate (2), and the two pressing-down structures are symmetrically distributed with each other. A fixing bolt (6) is threadedly connected between the two mounting seats (5), and the two pressing-down structures are connected to each other via the fixing bolt (6) to form a whole.

3. The multi-channel cavity filter with an isolation slot cover plate according to claim 2, characterized in that: The middle of the cover plate (2) is internally threadedly connected with a mounting bolt (7), and the mounting bolt (7) passes through the middle of the cover plate (2) and extends toward the bottom of the cover plate (2), and the portion of the mounting bolt (7) extending to the bottom of the cover plate (2) is threadedly connected to the middle of the interior of the housing (1).

4. The multi-channel cavity filter with an isolation slot cover plate according to claim 1, characterized in that: A partition plate (8) is provided in the middle of the shell (1), and the partition plate (8) divides the inside of the shell (1) into two independent spaces, and the two independent spaces are distributed in the inside of the shell (1) in a mirror-image manner.

5. The multi-channel cavity filter with an isolation slot cover plate according to claim 4, characterized in that: A plurality of equidistantly distributed isolation plates (9) are fixedly connected to the interior of the housing (1), and the isolation plates (9) further separate the space separated by the separation plates (8).

6. The multi-channel cavity filter with an isolation slot cover plate according to claim 5, characterized in that: A plurality of resonant rods (10) distributed at equal intervals are fixedly connected inside the shell (1), and each resonant rod (10) is located inside an independent space separated by a partition plate (8) and an isolation plate (9). Connecting seats (11) are fixedly connected to both ends of the shell (1), and each connecting seat (11) is distributed at both ends of the independent space inside the partition plate (8).

7. The multi-channel cavity filter with an isolation slot cover plate according to claim 1, characterized in that: The cover plate (2) is provided with a mounting groove (12) at the bottom, and the shape of the bottom of the mounting groove (12) is mutually engaged with the outer contour of the upper end of the partition plate (8) and the isolation plate (9); a reserved hole (13) is provided in the middle of the cover plate (2), and the inside of the reserved hole (13) is threadedly connected to the mounting bolt (7); a mounting hole (14) aligned with the reserved hole (13) is provided in the middle of the housing (1), and the inside of the mounting hole (14) is threadedly connected to the mounting bolt (7); and a plurality of equidistantly distributed heat dissipation fins (15) are fixedly connected to both sides of the housing (1).

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