Adjustable filter

Abstract

The utility model belongs to the technical field of filters, in particular to an adjustable filter, which comprises a filter body, a plurality of terminals are arranged on two sides of the filter body, a frequency regulator is arranged in the filter body, and a mounting box is fixedly arranged at the bottom of the filter body. The inner walls of the two sides of the mounting box are each provided with two arc-shaped grooves, each arc-shaped groove is provided with a plurality of positioning holes, and two adjusting structures are arranged in the mounting box. By arranging the arc-shaped grooves, the positioning holes, the sliding rods, the transverse plates, the guide plates and the ejector rods, when the extension length of the mounting plate needs to be adjusted, the two ejector rods are squeezed inwards, the ejector rods drive the guide plates, the guide plates are driven by the ejector rods, and therefore the mounting plate can be adjusted. When the arc-shaped end of the ejector rod is immersed into the arc-shaped groove and attached to the inner wall of the arc-shaped groove, the mounting plate is pulled outwards or pressed inwards, the purpose of adjusting the mounting plate can be achieved, the equipment can adjust the extending length of the mounting plate according to the position of the fixing plate, and therefore the mounting difficulty is reduced, and the practicability of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to an adjustable filter. Background Art

[0002] The filter is the most basic microwave electronic device. It is a filtering circuit composed of capacitors, inductors and resistors. The filter forms mainly include planar microstrip and cavity filters. The filter can effectively filter out a specific frequency point in the power line or frequencies other than this frequency point to obtain a power signal of a specific frequency, or eliminate a power signal after a specific frequency.

[0003] However, the position of the existing filter mounting plate is fixed and cannot be adjusted. When installing the filter on two fixed plates, it is necessary to select a filter with an appropriate mounting plate position according to the distance between the two plates, which reduces the practicality of the equipment and increases the difficulty of installation. Therefore, an adjustable filter is proposed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an adjustable filter.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an adjustable filter, including a filter body, a plurality of wiring terminals are provided on both sides of the filter body, a frequency regulator is provided in the filter body, a mounting box is fixedly provided at the bottom of the filter body, two arc-shaped grooves are provided on the inner walls on both sides of the mounting box, a plurality of positioning holes are provided on the arc-shaped grooves, two adjustment structures are provided in the mounting box, two mounting plates are movably provided on the top inner wall and the bottom inner wall of the mounting box, and the mounting plates and the adjustment structures are fixedly connected.

[0006] As a further description of the above technical solution:

[0007] A pad is fixedly provided on one side of the mounting plate away from the filter body, and the pad is made of rubber.

[0008] As a further description of the above technical solution:

[0009] The adjustment structure includes two sliding rods fixedly connected to the installation box, and the same horizontal plate is movably provided on the two sliding rods. One end of the installation plate is fixedly connected to the horizontal plate, and installation holes are provided on both sides of the horizontal plate. A spring is fixedly provided in the installation hole, and a top rod is fixedly provided at one end of the spring.

[0010] As a further description of the above technical solution:

[0011] A guide plate is fixedly provided at one end of the spring, one side of the guide plate is fixedly connected to one end of the push rod, and the guide plate is movably connected to the inner wall of the mounting hole.

[0012] As a further description of the above technical solution:

[0013] Two blocking pieces are fixedly provided on both sides of the transverse plate, and the blocking pieces are located on both sides of the mounting hole.

[0014] As a further description of the above technical solution:

[0015] One end of the push rod away from the guide plate is in an arc shape, and the arc-shaped end of the push rod is matched with the arc groove and the positioning hole.

[0016] As a further description of the above technical solution:

[0017] A circular hole is arranged on the horizontal plate, a sealing ring is arranged on the inner wall of the circular hole, and the inner wall of the sealing ring is movably connected to the sliding rod.

[0018] The utility model has the following beneficial effects:

[0019] 1. Compared with the prior art, the adjustable filter is provided with an arc groove, a positioning hole, a sliding rod, a horizontal plate, a mounting hole, a baffle, a spring, a guide plate and a push rod. When the extension length of the mounting plate needs to be adjusted, the two push rods are squeezed inward, the push rod drives the guide plate, and the guide plate squeezes the spring. When one arc-shaped end of the push rod is immersed in the arc groove and fits with the inner wall of the arc groove, the mounting plate is pulled outward or pressed inward, which can achieve the purpose of adjusting the mounting plate. The device can adjust the extension length of the mounting plate according to the position of the fixed plate, thereby reducing the difficulty of installation and improving the practicability of the device.

[0020] 2. Compared with the prior art, the adjustable filter can control the signal frequency by setting a frequency regulator, and adjust the signal frequency by changing the current of the variable resistor inside the regulator, thus solving the problem that the signal frequency in the filter cannot be adjusted and filtering cannot be performed according to the situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a first-view stereoscopic structure of an adjustable filter proposed by the utility model;

[0022] Figure 2 A schematic diagram of a second viewing angle stereoscopic structure of an adjustable filter proposed by the utility model;

[0023] Figure 3 This is a schematic diagram of the side section structure of a mounting box in an adjustable filter proposed by the utility model;

[0024] Figure 4A three-dimensional schematic diagram of an adjustment structure in an adjustable filter proposed by the utility model;

[0025] Figure 5 The present invention is a schematic diagram of the enlarged structure of part A in an adjustable filter proposed by the present invention.

[0026] Legend:

[0027] 1. Filter body; 2. Terminal; 3. Frequency adjuster; 4. Mounting box; 5. Arc groove; 6. Positioning hole; 7. Adjustment structure; 701. Sliding rod; 702. Horizontal plate; 703. Mounting hole; 704. Baffle; 705. Spring; 706. Guide plate; 707. Push rod; 8. Mounting plate; 9. Pad. DETAILED DESCRIPTION

[0028] 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.

[0029] Reference Figures 1 to 5 The utility model provides an adjustable filter: comprising a filter body 1, a plurality of terminals 2 are arranged on both sides of the filter body 1, a frequency regulator 3 is arranged inside the filter body 1, the frequency regulator 3 can control the signal frequency, and the signal frequency is adjusted by changing the current size of the variable resistor inside the regulator, a mounting box 4 is fixedly arranged at the bottom of the filter body 1, two arc grooves 5 are arranged on the inner walls of both sides of the mounting box 4, and a plurality of positioning holes 6 are arranged on the arc groove 5;

[0030] Reference Figure 4 to Figure 5In order to adjust the mounting plate 8, two adjustment structures 7 are provided in the mounting box 4. The adjustment structure 7 includes two slide bars 701 fixedly connected to the mounting box 4. The two slide bars 701 are movably provided with the same horizontal plate 702. The horizontal plate 702 is provided with a circular hole. The inner wall of the circular hole is provided with a sealing ring. The inner wall of the sealing ring is movably connected to the slide bar 701. One end of the mounting plate 8 is fixedly connected to the horizontal plate 702. Both sides of the horizontal plate 702 are provided with mounting holes 703. A spring 705 is fixedly provided in the mounting hole 703. One end of the spring 705 is fixedly provided with a push rod 707. The end of the push rod 707 away from the guide plate 706 is in an arc shape. The arc-shaped end of the push rod 707 is adapted to the arc groove 5 and the positioning hole 6. A guide plate 706 is fixedly provided at one end of the spring 705, one side of the guide plate 706 is fixedly connected to one end of the push rod 707, the guide plate 706 is movably connected to the inner wall of the mounting hole 703, the setting of the adjustment structure 7 can realize the rapid adjustment of the mounting plate 8, so that the device can adjust the extension length of the mounting plate 8 according to the position of the fixed plate, thereby reducing the installation difficulty and improving the practicality of the device, two mounting plates 8 are movably provided on the top inner wall and the bottom inner wall of the mounting box 4, the mounting plate 8 and the adjustment structure 7 are fixedly connected, and a pad 9 is fixedly provided on the side of the mounting plate 8 away from the filter body 1, the pad 9 is made of rubber, and the setting of the pad 9 can prevent the situation where there is a gap between the mounting plate 8 and the fixed plate;

[0031] Reference Figure 5 In order to limit the guide plate 706, two blocking pieces 704 are fixedly provided on both sides of the cross plate 702. The blocking pieces 704 are located on both sides of the mounting hole 703. The blocking pieces 704 can block the guide plate 706 to prevent the guide plate 706 from being separated from the mounting hole 703.

[0032] Working principle: When installing the filter, if the positions of the two sets of mounting plates 8 do not match the distance between the two fixing plates, the extension length of the mounting plates 8 can be adjusted according to the distance between the two fixing plates, and the two top rods 707 are squeezed inward, and the top rods 707 drive the guide plate 706, and the guide plate 706 squeezes the spring 705. When one arc-shaped end of the top rod 707 is immersed in the arc groove 5 and fits with the inner wall of the arc groove 5, the mounting plate 8 is pulled outward or pressed inward, which can achieve the purpose of adjusting the mounting plate 8. The mounting plate 8 drives the cross plate 702 to move on the slide bar 701. The setting of the two slide bars 701 can improve the filter performance. The stability of the high cross plate 702 when moving, after the adjustment is completed, the squeezing of the top rod 707 is stopped, the spring 705 applies a thrust to the guide plate 706, the guide plate 706 squeezes the top rod 707 outward, and makes one end of it pass through the positioning hole 6 to realize the positioning of the cross plate 702. When the adjustment is completed, the filter body 1 can be installed on the fixed plate. The signal frequency can be controlled by setting the frequency regulator 3. The signal frequency is adjusted by changing the current size of the variable resistor inside the regulator, which solves the problem that the signal frequency in the filter cannot be adjusted and filtering cannot be performed according to the situation.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can 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 should be included in the protection scope of the present invention.

Claims

1. An adjustable filter, comprising a filter body (1), characterized in that: A plurality of connection terminals (2) are provided on both sides of the filter body (1), a frequency regulator (3) is provided inside the filter body (1), a mounting box (4) is fixedly provided at the bottom of the filter body (1), two arc-shaped grooves (5) are provided on the inner walls on both sides of the mounting box (4), a plurality of positioning holes (6) are provided on the arc-shaped grooves (5), two adjustment structures (7) are provided in the mounting box (4), two mounting plates (8) are movably provided on the top inner wall and the bottom inner wall of the mounting box (4), and the mounting plates (8) and the adjustment structures (7) are fixedly connected.

2. An adjustable filter according to claim 1, characterized in that: A pad (9) is fixedly provided on a side of the mounting plate (8) away from the filter body (1), and the pad (9) is made of rubber.

3. The adjustable filter according to claim 1, characterized in that: The adjustment structure (7) comprises two slide bars (701) fixedly connected to the installation box (4); a common horizontal plate (702) is movably provided on the two slide bars (701); one end of the installation plate (8) is fixedly connected to the horizontal plate (702); installation holes (703) are provided on both sides of the horizontal plate (702); a spring (705) is fixedly provided in the installation hole (703); and a top rod (707) is fixedly provided at one end of the spring (705).

4. An adjustable filter according to claim 3, characterized in that: A guide plate (706) is fixedly provided at one end of the spring (705), one side of the guide plate (706) is fixedly connected to one end of the push rod (707), and the guide plate (706) is movably connected to the inner wall of the mounting hole (703).

5. The adjustable filter according to claim 3, characterized in that: Two blocking pieces (704) are fixedly provided on both sides of the transverse plate (702), and the blocking pieces (704) are located on both sides of the mounting hole (703).

6. The adjustable filter according to claim 3, characterized in that: One end of the push rod (707) away from the guide plate (706) is in an arc shape, and the arc-shaped end of the push rod (707) is compatible with the arc groove (5) and the positioning hole (6).

7. The adjustable filter according to claim 3, characterized in that: The horizontal plate (702) is provided with a circular hole, the inner wall of the circular hole is provided with a sealing ring, and the inner wall of the sealing ring is movably connected to the sliding rod (701).

Images