Anti-interference microwave band-pass filter

Abstract

The utility model discloses an anti-interference microwave band-pass filter, which comprises a filter shell and a main supporting plate sleeved at the middle part of the filter shell, the two sides of the main supporting plate are respectively and fixedly provided with a storage cylinder, and the interior of each storage cylinder is connected with a magnetic ring sliding support in a sliding manner. The magnetic ring sliding support is composed of a sliding straight cylinder arranged outside the filter shell in a sleeving mode and a plurality of partition ring plates fixed to the outer wall of the sliding straight cylinder in a sleeving mode. After the magnetic ring sliding support is pulled out, the ferrite magnetic rings on the magnetic ring sliding support are used for absorbing interference signals of corresponding frequency bands, and different types of ferrite magnetic rings can be placed on the magnetic ring sliding support, so that different interference signals can be absorbed at the same time, the anti-interference capability can be improved, and due to the fact that the ferrite magnetic rings are convenient to install, the cost is low. And the cable does not need to be pulled out, so that the continuity of filtering work can be improved, and dustproof and anti-collision protection of the magnetic ring can be realized by pushing the magnetic ring sliding bracket into the storage cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field related to filters, in particular to an anti-interference microwave bandpass filter. Background Art

[0002] An ideal filter should have a completely flat passband, i.e. no gain or attenuation within the passband, and all frequencies outside the passband are completely attenuated. In addition, the conversion outside the passband is completed in a very small frequency range. In fact, there is no ideal bandpass filter. The filter cannot completely attenuate all frequencies outside the desired frequency range.

[0003] At present, the interference suppression ferrite is used to absorb interference signals in a certain frequency band and convert them into heat. According to the frequency band of a certain interference signal, suitable interference suppression ferrite rings and beads are selected and directly put on the cable that needs to be filtered to increase the anti-interference ability of the filter. However, during the use of the filter, when the ferrite rings or beads need to be replaced, it is necessary to stop the filtering work and unplug the cable from the filter to replace the ferrite rings or beads, which is not conducive to the continuity of the filtering work. Utility Model Content

[0004] In order to solve the defects in the prior art, the utility model provides an interference-resistant microwave bandpass filter.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses an anti-interference microwave bandpass filter, comprising a filter housing and a main support plate sleeved on the middle part of the filter housing, storage cylinders are fixed on both sides of the main support plate, a magnetic ring sliding bracket is slidably connected inside the storage cylinder, the magnetic ring sliding bracket is composed of a sliding straight cylinder sleeved on the outside of the filter housing and a plurality of separation ring plates sleeved and fixed on the outer wall of the sliding straight cylinder, a plurality of installation ring grooves for installing ferrite magnetic rings are divided outside the sliding straight cylinder through the separation ring plate, and an inner ring plate slidably connected to the storage cylinder and an outer ring plate for limiting are respectively fixed at both ends of the sliding straight cylinder.

[0007] As an optimal technical solution of the utility model, the ferrite magnetic ring is composed of a ferrite half magnetic ring one and a ferrite half magnetic ring two, the ferrite half magnetic ring one and the ferrite half magnetic ring two are arranged face to face, both ends of the ferrite half magnetic ring one are provided with grooves, both ends of the ferrite half magnetic ring two are provided with ferrite magnetic blocks plugged into the grooves, and the ferrite magnetic blocks are attracted to the ferrite half magnetic ring one.

[0008] As a preferred technical solution of the utility model, an annular permanent magnet is bonded to the middle part of the main support plate, the main support plate is sleeved on the outside of the filter housing through the annular permanent magnet, the inner wall of the annular permanent magnet is bonded to the filter housing by gluing, and a group of connecting grooves are provided on both sides of the annular permanent magnet, and the two groups of connecting grooves are located on the inner wall of the main support plate and are symmetrically distributed.

[0009] As a preferred technical solution of the utility model, two limiting sliding grooves connected to the connecting groove are provided on the inner wall of the storage tube, and a locking bolt is screwed on the outer wall of one end thereof, and the locking bolt is arranged at the end away from the main support plate.

[0010] As a preferred technical solution of the utility model, a sliding block slidably matched with the limiting sliding groove is symmetrically installed on the outer wall of one end of the inner ring plate, and the sliding block is also slidably connected to the connecting groove.

[0011] As a preferred technical solution of the utility model, connecting plates are symmetrically arranged in the mounting ring groove, and the connecting plates are used to connect the separation ring plate, the inner ring plate and the outer ring plate.

[0012] As a preferred technical solution of the utility model, the outer ring plate is located outside the storage tube, and a plurality of anti-slip strips distributed in a ring shape around the center of the circle are arranged on the outer wall of the outer ring plate.

[0013] The beneficial effects of the utility model are:

[0014] 1. This kind of anti-interference microwave bandpass filter pulls out the magnetic ring sliding bracket and uses the ferrite magnetic ring on it to absorb the interference signal of the corresponding frequency band. Different types of ferrite magnetic rings can be placed on the magnetic ring sliding bracket, so different interference signals can be absorbed at the same time, thereby improving the anti-interference ability. Since the ferrite magnetic ring is easy to install and there is no need to unplug the cable, it helps to improve the continuity of the filtering work. Pushing the magnetic ring sliding bracket into the storage tube can realize dust and impact protection of the magnetic ring.

[0015] 2. This kind of anti-interference microwave bandpass filter utilizes the magnetic force of the annular permanent magnet and the ferrite magnetic ring to stabilize the magnetic ring sliding bracket in the storage tube, and then locks it with the locking bolt, which can effectively prevent the magnetic ring sliding bracket from slipping out of the storage tube due to shaking, moving the equipment, etc. In addition, when the magnetic ring sliding bracket slides out, the locking bolt is used to press against the sliding block to fix the magnetic ring sliding bracket, and the sliding straight tube or ferrite magnetic ring can also be used to fix the magnetic ring sliding bracket, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structure of an anti-interference microwave bandpass filter of the utility model;

[0018] Figure 2 This is a schematic diagram of the use of a magnetic ring sliding bracket of an anti-interference microwave bandpass filter of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a magnetic ring sliding bracket of an anti-interference microwave bandpass filter of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of a ferrite magnetic ring of an anti-interference microwave bandpass filter of the utility model;

[0021] Figure 5 The utility model is a schematic diagram of the disassembled structure of a main support plate and a storage tube of an anti-interference microwave bandpass filter.

[0022] In the figure: 1. filter housing; 2. main support plate; 21. annular permanent magnet; 22. connecting groove; 3. storage tube; 31. limiting slide groove; 4. locking bolt; 5. magnetic ring sliding bracket; 51. outer ring plate; 52. inner ring plate; 521. sliding block; 53. sliding straight cylinder; 54. separation ring plate; 55. connecting plate; 56. mounting ring groove; 6. ferrite magnetic ring; 61. ferrite half magnetic ring one; 611. groove; 62. ferrite half magnetic ring two; 621. ferrite magnetic block. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0024] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the utility model is an anti-interference microwave bandpass filter, including a filter housing 1 and a main support plate 2 sleeved on the middle part of the filter housing 1, storage tubes 3 are fixed on both sides of the main support plate 2, and a magnetic ring sliding bracket 5 is slidably connected inside the storage tube 3. The magnetic ring sliding bracket 5 is composed of a sliding straight tube 53 sleeved on the outside of the filter housing 1 and a plurality of separation ring plates 54 sleeved and fixed on the outer wall of the sliding straight tube 53. The outside of the sliding straight tube 53 is divided into a plurality of installation ring grooves 56 for installing ferrite magnetic rings 6 through the separation ring plates 54, and the two ends of the sliding straight tube 53 are respectively fixed with an inner ring plate 52 slidably connected to the storage tube 3 and an outer ring plate 51 for limiting.

[0025] Among them, the ferrite magnetic ring 6 is composed of a ferrite half magnetic ring 1 61 and a ferrite half magnetic ring 2 62, and the ferrite half magnetic ring 1 61 and the ferrite half magnetic ring 2 62 are arranged face to face. Both ends of the ferrite half magnetic ring 1 61 are provided with grooves 611, and both ends of the ferrite half magnetic ring 2 62 are provided with ferrite blocks 621 plugged into the grooves 611. The ferrite blocks 621 and the ferrite half magnetic ring 1 61 are attracted to each other, and the ferrite half magnetic ring 1 61 and the ferrite half magnetic ring 2 62 can be attracted together by their own magnetic force. The connection between the ferrite blocks 621 and the grooves 611 can improve the stability of the connection between the ferrite half magnetic ring 1 61 and the ferrite half magnetic ring 2 62.

[0026] Among them, an annular permanent magnet 21 is bonded to the middle part of the main support plate 2, and the main support plate 2 is sleeved on the outside of the filter housing 1 through the annular permanent magnet 21. The inner wall of the annular permanent magnet 21 is bonded to the filter housing 1 by gluing, and a group of connecting grooves 22 are provided on both sides of the annular permanent magnet 21. The two groups of connecting grooves 22 are both located on the inner wall of the main support plate 2 and are symmetrically distributed. By utilizing the magnetic force of the annular permanent magnet 21 and the ferrite magnetic ring 6, the magnetic ring sliding bracket 5 can be stabilized in the storage tube 3, and then locked with the locking bolt 4, which can effectively prevent the magnetic ring sliding bracket 5 from slipping out of the storage tube 3 due to shaking, moving equipment, etc.

[0027] Among them, two limiting sliding grooves 31 connected to the connecting groove 22 are provided on the inner wall of the storage tube 3, and a locking bolt 4 is screwed on the outer wall of one end thereof. The locking bolt 4 is arranged at the end away from the main support plate 2. When it is necessary to lock the magnetic ring sliding bracket 5, the locking bolt 4 is tightened, and the locking bolt 4 is used to press against the sliding block 521 to fix the magnetic ring sliding bracket 5. The locking bolt 4 is used to press against the sliding straight tube 53 or the ferrite magnetic ring 6 to fix the magnetic ring sliding bracket 5, which is convenient to use.

[0028] A sliding block 521 slidably matched with the limiting sliding groove 31 is symmetrically mounted on the outer wall of one end of the inner ring plate 52. The sliding block 521 is also slidably connected with the connecting groove 22.

[0029] Among them, a connecting plate 55 is symmetrically provided in the mounting ring groove 56, and the connecting plate 55 is used to connect the separating ring plate 54, the inner ring plate 52 and the outer ring plate 51. The ferrite magnetic ring 6 can rotate outside the sliding straight cylinder 53. The connecting plate 55 is in contact with the ferrite magnetic ring 6 to support the ferrite magnetic ring 6, thereby improving the stability of the ferrite magnetic ring 6 when installed in the mounting ring groove 56.

[0030] Among them, the outer ring plate 51 is located outside the storage tube 3, and a plurality of anti-slip strips distributed in a ring shape around the center of the circle are arranged on its outer wall. The setting of the anti-slip strips can increase the friction between the hand and the outer ring plate 51, and can prevent the outer ring plate 51 from slipping out of the hand.

[0031] When working, connect the filter to the cable that needs to be filtered, loosen the locking bolt 4, use the outer ring plate 51 to pull the magnetic ring sliding bracket 5 outward, move the magnetic ring sliding bracket 5 to the appropriate position, tighten the locking bolt 4, lock the magnetic ring sliding bracket 5, if the ferrite magnetic ring 6 is already installed in the magnetic ring sliding bracket 5, it does not need to be installed, if not, install the two ferrite half magnetic rings 1 61 and the ferrite half magnetic ring 2 62 into the outermost installation ring groove 56 in turn, and complete the assembly of the ferrite magnetic ring 6 by plugging the ferrite magnetic block 621 into the groove 611. In the filtering process of the filter, the ferrite magnetic ring 6 is used to absorb the interference of the corresponding frequency band. Signal, and different types of ferrite magnetic rings 6 will result in different absorbed interference signals, so placing different types of ferrite magnetic rings 6 can realize the simultaneous absorption of different interference signals, thereby improving the anti-interference ability, and if the ferrite magnetic ring 6 loses its magnetism or the magnetism is not enough to complete the stable connection between the ferrite half magnetic ring 1 61 and the ferrite half magnetic ring 2 62, the ferrite half magnetic ring 1 61 and the ferrite half magnetic ring 2 62 can be directly removed and replaced with new ones, which is easy to install and does not need to unplug the cable, which helps to improve the continuity of the filtering work. When not in use, the magnetic ring sliding bracket 5 is pushed into the storage tube 3 to realize the dust and impact protection of the magnetic ring.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An anti-interference microwave bandpass filter, comprising a filter housing (1) and a main support plate (2) sleeved in the middle of the filter housing (1), characterized in that: A storage cylinder (3) is fixed on both sides of the main support plate (2), and a magnetic ring sliding bracket (5) is slidably connected inside the storage cylinder (3). The magnetic ring sliding bracket (5) is composed of a sliding straight cylinder (53) sleeved on the outside of the filter housing (1) and a plurality of separation ring plates (54) sleeved and fixed on the outer wall of the sliding straight cylinder (53). The outside of the sliding straight cylinder (53) is divided into a plurality of mounting ring grooves (56) for mounting ferrite magnetic rings (6) through the separation ring plates (54), and the two ends of the sliding straight cylinder (53) are respectively fixed with an inner ring plate (52) slidably connected to the storage cylinder (3) and an outer ring plate (51) for limiting.

2. The anti-interference microwave bandpass filter according to claim 1, characterized in that: The ferrite magnetic ring (6) is composed of a ferrite half magnetic ring (61) and a ferrite half magnetic ring (62). The ferrite half magnetic ring (61) and the ferrite half magnetic ring (62) are arranged face to face. Both ends of the ferrite half magnetic ring (61) are provided with grooves (611). Both ends of the ferrite half magnetic ring (62) are provided with ferrite blocks (621) plugged into the grooves (611). The ferrite blocks (621) are attracted to the ferrite half magnetic ring (61).

3. The anti-interference microwave bandpass filter according to claim 1, characterized in that: An annular permanent magnet (21) is bonded to the middle of the main support plate (2); the main support plate (2) is sleeved on the outside of the filter housing (1) via the annular permanent magnet (21); the inner wall of the annular permanent magnet (21) is bonded to the filter housing (1) by gluing; a group of connection grooves (22) are provided on both sides of the annular permanent magnet (21); the two groups of connection grooves (22) are both located on the inner wall of the main support plate (2) and are symmetrically distributed.

4. The anti-interference microwave bandpass filter according to claim 3, characterized in that: The inner wall of the storage tube (3) is provided with two limiting sliding grooves (31) which are in communication with the connecting groove (22), and the outer wall at one end thereof is screwed with a locking bolt (4), which is arranged at the end away from the main support plate (2).

5. The anti-interference microwave bandpass filter according to claim 4, characterized in that: A sliding block (521) slidably matched with the limiting sliding groove (31) is symmetrically mounted on the outer wall of one end of the inner ring plate (52), and the sliding block (521) is also slidably connected to the connecting groove (22).

6. The anti-interference microwave bandpass filter according to claim 1, characterized in that: A connecting plate (55) is symmetrically arranged in the mounting ring groove (56), and the connecting plate (55) is used to connect the separating ring plate (54), the inner ring plate (52) and the outer ring plate (51).

7. The anti-interference microwave bandpass filter according to claim 1, characterized in that: The outer ring plate (51) is located outside the storage tube (3), and a plurality of anti-slip strips distributed in a ring shape around the center of the circle are arranged on its outer wall.

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